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WO2020195297A1 - Liquid medicine administration device - Google Patents

Liquid medicine administration device Download PDF

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Publication number
WO2020195297A1
WO2020195297A1 PCT/JP2020/005577 JP2020005577W WO2020195297A1 WO 2020195297 A1 WO2020195297 A1 WO 2020195297A1 JP 2020005577 W JP2020005577 W JP 2020005577W WO 2020195297 A1 WO2020195297 A1 WO 2020195297A1
Authority
WO
WIPO (PCT)
Prior art keywords
motor
housing
gear head
administration device
chemical solution
Prior art date
Application number
PCT/JP2020/005577
Other languages
French (fr)
Japanese (ja)
Inventor
近藤　晃
Original Assignee
テルモ株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by テルモ株式会社 filed Critical テルモ株式会社
Publication of WO2020195297A1 publication Critical patent/WO2020195297A1/en

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
    • A61M5/142—Pressure infusion, e.g. using pumps
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
    • A61M5/142—Pressure infusion, e.g. using pumps
    • A61M5/145—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
    • H02K7/116—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears

Definitions

  • the present invention relates to a drug solution administration device.
  • a syringe pump type drug solution administration device that administers a drug solution filled in a drug solution container into a living body by a pressing action of a pusher
  • the pusher can be configured to discharge the chemical solution from the chemical solution container as the pusher is pushed into the chemical solution container by the rotational driving force of the motor, for example.
  • Patent Document 1 includes a motor unit that generates a rotational driving force and a gear head unit that is connected to the motor unit and decelerates and outputs the rotational driving force transmitted from the motor unit as a motor that generates a sufficient torque. Geared motors are disclosed.
  • the other member in addition to one member of the motor portion and the gear head portion, the other member is also fixed to the housing by a fixing member.
  • the motor portion and the gear head portion are fixed in a relatively displaced state due to the processing accuracy of each fixing member for fixing the motor portion and the gear head portion.
  • the motor portion and the gear head portion are relatively misaligned, the axial center of the gear head portion is not aligned with the axial center of the motor portion, and the torque transmitted from the motor portion to the gear head portion is reduced. did.
  • an object of the present invention is to provide a chemical administration device capable of suppressing a reduction in torque transmitted from a motor portion to a gear head portion while suppressing separation between a motor portion and a gear head portion when an impact such as a drop is applied. Is.
  • the chemical solution administration device of the present invention includes a chemical solution container filled with a chemical solution, a pusher for pushing out the chemical solution in the chemical solution container, a motor portion, and a gear head portion connected to the motor portion, and drives the pusher.
  • a geared motor that generates a driving force for the motor, a housing that houses the geared motor, a fixing member that fixes one of the motor portion and the gear head portion to the housing, the motor portion, and the gear head.
  • the other member is hardened in a state of being arranged in the gap between the other member of the portion and the housing, and the other member is located at a position where the axis of the other member follows the axis of the one member. It has a holding member for holding the member of the above.
  • the chemical solution administration device of the present invention it is possible to suppress the reduction of the torque transmitted from the motor portion to the gear head portion while suppressing the separation between the motor portion and the gear head portion when an impact such as dropping is applied.
  • FIG. 5 is a partial cross-sectional view taken along line 11-11 of FIG. It is a figure which provides the explanation of the attachment method to the housing of a geared motor. It is a figure which provides the explanation of the attachment method to the housing of a geared motor. It is a figure which provides the explanation of the attachment method to the housing of a geared motor. It is a figure which provides the explanation of the attachment method to the housing of a geared motor. It is a figure which provides the explanation of the attachment method to the housing of a geared motor.
  • FIG. 1 to 11 are views provided for explaining the drug solution administration system 10, the drug solution administration device 100, and the administration device 200 according to the embodiment.
  • 12A to 12D are views for explaining a method of attaching the geared motor 141 to the housing 120.
  • the arrow X attached to each figure indicates the "longitudinal direction (longitudinal direction of the chemical solution container 110)" of the chemical solution administration device 100, and the arrow Y indicates the “width direction (depth direction)” of the chemical solution administration device 100.
  • Z indicates the "height direction” of the drug solution administration device 100.
  • the drug solution administration system 10 is used to administer the drug solution in vivo. As shown in FIG. 1, the drug solution administration system 10 includes a drug solution administration device 100 and an administration device 200.
  • the drug solution administration device 100 and the administration device 200 are configured as a patch type to be used by being attached to the body surface (skin) H of the user.
  • the body part of the user to which the drug solution administration device 100 and the administration device 200 are attached is not particularly limited, and is, for example, the abdomen or the thigh.
  • the chemical solution (not shown) filled in the chemical solution container 110 included in the chemical solution administration device 100 is pressed by a pusher 130 described later for a relatively long time (for example, several minutes to several minutes). It can be continuously administered in vivo over a period of time).
  • the drug solution administration system 10 may intermittently administer the drug solution into the living body.
  • the chemical solution administration device 100 pushes the chemical solution container 110 filled with the chemical solution, the housing 120 for holding the chemical solution container 110, the pusher 130 for pushing out the chemical solution in the chemical solution container 110, and the pusher 130. It has a drive mechanism 140 for advancing the child 130 toward the tip opening of the chemical solution container 110, and a control unit 150 for controlling the operation of the drive mechanism 140.
  • the housing 120 is housed in a box-shaped housing main body 121 having an accommodating space formed therein and an accommodating space of the housing main body 121, and is fixed to the housing main body 121. It has a possible chassis 122 and a lid member 123 that is attached to the housing main body 121 with the chassis 122 housed in the housing space.
  • a window portion 124 is formed on the upper surface 121a of the housing main body portion 121 so that the inside of the accommodation space can be visually recognized from the outside of the housing 120.
  • the window portion 124 is formed by providing a transparent or translucent portion in a part of the housing main body portion 121.
  • a base end opening 125 for inserting the chassis 122 into the accommodation space of the housing main body 121 is formed on the base end side of the housing main body 121 in the longitudinal direction. As shown in FIGS. 3 and 4, the base end opening 125 of the housing main body 121 is closed by the lid member 123 with the chassis 122 accommodated in the accommodation space.
  • a sheet-shaped attachment portion (not shown) that can be attached to the body surface H of the user is provided on the bottom surface 121b of the housing main body portion 121.
  • a peelable protective sheet is attached to the attachment surface of the attachment portion.
  • the chassis 122 holds a chemical solution container 110, a pusher 130, a drive mechanism 140, a control unit 150, and a power supply unit 160.
  • the chemical solution container 110 is composed of a so-called prefilled chemical solution container. Therefore, the chemical solution is pre-filled in the cavity 111 of the chemical solution container 110.
  • the drug solution include protein preparations, narcotic analgesics, diuretics and the like.
  • a sealing member (not shown) for preventing leakage of the chemical solution is arranged at the tip opening (discharge port) formed at the tip end 112 of the chemical solution container 110.
  • the tip portion 112 of the chemical solution container 110 is arranged so as to project outward from the housing main body portion 121.
  • a mounting portion 115 that is connected to a tube 240 (see FIG. 1), which will be described later, is attached to a tip portion of the chemical solution container 110 that protrudes from the housing main body portion 121.
  • the pusher 130 is inserted into the cavity 111 of the chemical solution container 110.
  • a gasket 131 slidable with the inner wall of the chemical liquid container 110 is arranged.
  • the outer peripheral portion of the gasket 131 is in close contact with the inner peripheral surface of the chemical liquid container 110 in a liquid-tight manner, thereby sealing the base end side of the gasket 131 in a liquid-tight manner.
  • the drive mechanism 140 is connected to a geared motor 141 that receives a drive current from the power supply unit 160 to generate a rotational drive force, a reduction mechanism 142 including gears that transmit the rotational drive force of the geared motor 141, and a reduction mechanism 142. It has a feed screw 143 and the like.
  • the structure of the geared motor 141 and the mounting structure and mounting method of the geared motor 141 to the housing 120 will be described later.
  • the feed screw 143 is screwed near the base end of the pusher 130.
  • the lead screw 143 converts the rotary motion transmitted from the speed reduction mechanism 142 into a linear motion, and advances the pusher 130 in the longitudinal direction (X direction).
  • the pusher 130 pushes the chemical solution from the cavity 111 of the chemical solution container 110 into the tube 240 (see FIG. 1) by advancing toward the tip end side of the chemical solution container 110.
  • the control unit 150 controls the liquid feeding operation of the chemical liquid of the chemical liquid administration device 100.
  • the control unit 150 can be configured by, for example, a known microcomputer (electronic circuit element) equipped with a CPU, RAM, ROM, or the like.
  • the control unit 150 comprehensively executes the operation control of the drive mechanism 140 and the power supply unit 160.
  • the power supply unit 160 can be composed of, for example, a known battery or the like.
  • the geared motor 141 is also called a motor with a speed reducer. As shown in FIGS. 5 and 6, the geared motor 141 includes a motor unit 144 that is rotationally driven, and a gear head unit 145 that is connected to the motor unit 144 and decelerates and outputs a rotational driving force transmitted from the motor unit 144. Have. As described above, in the geared motor 141, the gear head portion 145 decelerates and outputs the rotational driving force transmitted from the motor portion 144, so that the output torque can be increased. Therefore, the geared motor 141, together with the speed reduction mechanism 142, can generate a sufficient torque to push the pusher 130 into the chemical liquid container 110 filled with the chemical liquid.
  • the motor unit 144 includes a stator 144a, a rotor 144b arranged in the stator 144a and rotated by the stator 144a, a motor shaft 144c connected to the rotor 144b and rotating together with the rotor 144b, and the like. It has a motor side case 144d and a case for accommodating the above.
  • the gear head portion 145 accommodates a gear reduction mechanism 145a that decelerates and outputs the rotational driving force input from the motor shaft 144c, and an output shaft 145b that outputs the rotational driving force decelerated by the gear reduction mechanism 145a. It has a gear side case 145c and.
  • the gear reduction mechanism 145a is composed of a combination of a plurality of gears (not shown).
  • the combination of a plurality of gears constituting the gear reduction mechanism 145a is not particularly limited, but a known gear reduction mechanism such as a planetary gear reduction mechanism can be used.
  • the motor shaft 144c is coupled with at least one gear (hereinafter, referred to as an input gear 145d) constituting the gear reduction mechanism 145a, and a rotational driving force is input to the input gear 145d.
  • the motor shaft 144c may be coupled by being inserted into the input gear 145d, for example, as shown in FIG. 7A.
  • the motor shaft 144c may be coupled by forming a pinion P on the motor shaft 144c and engaging the pinion P of the motor shaft 144c with the input gear 145d, for example, as shown in FIG. 8A.
  • the output shaft 145b is coupled with at least one gear (not shown) constituting the gear reduction mechanism 145a. As shown in FIG. 6, the output shaft 145b projects to the outside of the gear side case 145c and transmits the rotational driving force to the reduction mechanism 142.
  • the motor side case 144d and the gear side case 145c are connected to each other.
  • the motor-side case 144d and the gear-side case 145c have a substantially cylindrical shape in the present embodiment.
  • a protrusion 145e is formed on the outer surface of the gear side case 145c so as to project outward in the radial direction.
  • the shapes of the motor side case 144d and the gear side case 145c are not particularly limited.
  • the gear head portion 145 is fixed to the chassis 122 of the housing 120 by the fixing member 170.
  • the "fixing member” is a member (that is, a bracket, etc.) capable of fixing the geared motor to the housing, having a hardness that does not easily deform even if the geared motor is pressed when the geared motor is assembled to the housing. ) Means.
  • the fixing member 170 is connected to both ends of the sandwiching portion 171 and the sandwiching portion 171 arranged so as to sandwich the gear head portion 145 with the chassis 122, and extends toward the chassis 122. It has a pair of fixing portions 172 and 173 for fixing the holding portion 171 to the chassis 122. That is, the fixing member 170 has a substantially inverted U-shaped outer shape. However, the outer shape of the fixing member 170 is not particularly limited as long as the gear head portion 145 can be fixed to the chassis 122.
  • a groove portion 171a in which the protrusion 145e of the gear head portion 145 is arranged is formed on the surface of the sandwiching portion 171 facing the gear head portion 145. Therefore, the fixing member 170 can suppress the rotation of the gear side case 145c.
  • the pair of fixing portions 172 and 173 are fixed to the chassis 122 in a state where the holding portion 171 is pressed against the gear head portion 145. Therefore, the fixing member 170 can effectively suppress the misalignment of the gear head portion 145.
  • the pair of fixing portions 172 and 173 are formed with through holes 172a and 173a into which the pair of protrusions 126a and 126b of the chassis 122, which will be described later, are inserted.
  • the pair of fixing portions 172 and 173 are fixed to the chassis 122 by engaging with the pair of protrusions 126a and 126b.
  • the method of fixing the fixing member 170 to the housing 120 is not particularly limited.
  • the fixing member 170 may be fixed to the housing by being screwed.
  • the fixing member 170 is formed of a springy material.
  • a springy material examples include polycarbonate (PC) and polyoxymethylene (POM). Since the fixing member 170 has a spring property, it is possible to suppress the impact transmitted to the geared motor 141 when the chemical solution administration device 100 is dropped.
  • the material forming the fixing member 170 does not have to have springiness, and a known resin material or metal material can be used.
  • the axis S1 of the motor unit 144 and the axis S2 of the gear head unit 145 are aligned from the viewpoint of transmitting the torque output by the motor unit 144 to the gear head unit 145.
  • the axis S1 of the motor unit 144 means the axis S1 of the motor shaft 144c
  • the axis S2 of the gear head unit 145 means the axis S2 of the input gear 145d that couples with the motor shaft 144c.
  • the "aligned state” is a state in which the axis S1 of the motor unit 144 and the axis S2 of the gear head unit 145 are in an appropriate positional relationship so that sufficient torque (for example, rated torque) can be output.
  • the aligned state means that the axis S1 of the motor shaft 144c and the axis S2 of the input gear 145d are abbreviated. It means a state in which they are located in parallel.
  • the present inventors have made the motor unit 144 by the holding member 180 (curable composition) that shifts from the uncured state (softened state) to the cured state when the geared motor 141 is assembled to the chassis 122. It was found that the above problem can be solved by holding the above-mentioned in the chassis 122.
  • the uncured state means a state in which the geared motor 141 can be easily deformed when pressed.
  • the holding member 180 is arranged in an uncured state in the gap between the motor portion 144 and the chassis 122 when the geared motor 141 is attached to the chassis 122.
  • the holding member 180 maintains a relative positional relationship between the gear head portion 145 and the motor portion 144 in which the axial center S1 of the motor portion 144 is aligned with the axial center S2 of the gear head portion 145.
  • it is deformed according to the position of the motor unit 144. Then, the holding member 180 shifts to the cured state while maintaining the relative positional relationship between the gear head portion 145 and the motor portion 144.
  • the holding member 180 can hold the motor portion 144 at a position (aligned position) where the axial center S1 of the motor portion 144 follows the axial center S2 of the gear head portion 145. Therefore, the chemical solution administration device 100 can suppress the reduction of the torque output by the geared motor 141 while suppressing the separation of the motor unit 144 and the gear head unit 145 due to an impact such as dropping.
  • the holding member 180 is made of an adhesive. Therefore, the holding member 180 is adhered to the chassis 122 and the motor portion 144, and in the uncured state, the holding member 180 corresponds to the position of the motor portion 144 so as to maintain the relative positional relationship between the gear head portion 145 and the motor portion 144. Can be easily deformed.
  • the chassis 122 has a frame portion 126 that surrounds the geared motor 141, and a gear head support portion 127 that is arranged in the frame portion 126 and supports the gear head portion 145. Further, the chassis 122 is arranged in the frame portion 126 and has an accommodating portion 128 for accommodating the holding member 180.
  • the frame portion 126 is provided so as to surround the periphery of the geared motor 141 excluding the output shaft 145b.
  • protrusions 126a and 126b to be inserted into the through holes 172a and 173a are formed on the surface of the frame portion 126 facing the pair of fixing portions 172 and 173 of the fixing member 170.
  • the gear head support portion 127 abuts on the outer peripheral surface of the gear head portion 145.
  • the gear head support portion 127 may be at least partially in contact with the outer peripheral surface of the gear head portion 145, and is not limited to the shape shown in the drawing.
  • the accommodating portion 128 faces the motor portion 144 and is separated from the connecting portion between the motor portion 144 and the gear head portion 145 in a state where the gear head portion 145 is in contact with the gear head supporting portion 127. It has a pair of partition portions 128a and 128b provided in the above. The pair of partition portions 128a and 128b are separated from each other to form an accommodation space 128c in which the holding member 180 is arranged. Therefore, the accommodating portion 128 can prevent the holding member 180 from adhering to the connecting portion between the motor portion 144 and the gear head portion 145 and invading the inside of the geared motor 141.
  • the surface (upper surface) of the partition portions 128a and 128b facing the motor portion 144 forms a gap G1 with the outer peripheral surface of the motor portion 144 in a state where the gear head portion 145 is in contact with the gear head support portion 127.
  • the holding member 180 is arranged so as to fill (fill) the gap G1. Therefore, the holding member 180 can suitably hold the motor portion 144 at a position where the axial center S1 of the motor portion 144 follows the axial center S2 of the gear head portion 145.
  • the holding member may not be arranged so as to fill the entire gap G1.
  • the structure around the geared motor 141 of the housing 120 is not limited to the above.
  • the housing 120 may not have a frame portion 126 or a housing portion 128.
  • the geared motor 141 and the housing 120 are prepared.
  • the holding member 180 in the uncured state is arranged on the accommodation space 128c between the pair of partition portions 128a and 128b of the chassis 122 and the upper surface of each of the partition portions 128a and 128b.
  • the geared motor 141 is arranged in the frame portion 126 of the chassis 122.
  • the fixing member 170 is fixed to the chassis 122.
  • the gear head support portion 127 of the chassis 122 is in contact with the gear head portion 145.
  • the holding member 180 in the uncured state is deformed according to the position of the motor portion 144 so as to maintain the relative positional relationship between the gear head portion 145 and the motor portion 144. Therefore, the motor portion 144 is arranged at a position where the axial center S1 of the motor portion 144 follows the axial center S2 of the gear head portion 145. With the deformation, a part of the holding member 180 in the uncured state may escape from G2 (see FIG. 10) between the frame portion 126 and the motor portion 144.
  • the holding member 180 shifts to a cured state while holding the motor portion 144 at a position where the axial center S1 of the motor portion 144 follows the axial center S2 of the gear head portion 145. Therefore, the holding member 180 can fix the motor portion 144 to the chassis 122 while maintaining a state in which the axial center S1 of the motor portion 144 and the axial center S2 of the gear head portion 145 are aligned.
  • the administration device 200 is configured to be connectable to the drug solution administration device 100.
  • the administration device 200 includes a connector 210, a needle tube 220 to be punctured by a living body, a puncture portion (cannula housing) 230, a tube 240, and a puncture assisting tool 250 to assist the needle tube 220 to puncture the living body. ing.
  • the connector 210 is configured to be connectable to the chemical solution administration device 100 via the mounting portion 215 fixed to the connector 210.
  • the mounting portion 215 can be connected to the chemical liquid administration device 100 by being fitted externally to the mounting portion 115 (see FIG. 4) provided at the tip end 112 of the chemical liquid container 110 protruding to the outside of the housing 120.
  • a connecting needle portion capable of penetrating a sealing member (not shown) arranged at the tip of the chemical solution container 110 is arranged inside the mounting portion 215.
  • the tube 240 communicates with the lumen 111 of the chemical container 110 via a connecting needle.
  • a flow path (not shown) that communicates the lumens of the tube 240 and the needle tube 220 is formed inside the puncture portion 230.
  • the drug solution sent to the puncture portion 230 via the tube 240 is administered into the living body through the flow path and the needle tube 220 formed inside the puncture portion 230.
  • a puncture aid 250 is attached to the puncture portion 230 when the drug solution is sent to the user.
  • the puncture aid 250 holds the introduction needle (inner needle) 251.
  • the introduction needle 251 protrudes from the tip of the needle tube 220 in a state where the puncture aid 250 is attached to the puncture portion 230.
  • the puncture aid 250 is removed from the puncture portion 230 after the needle tube 220 is punctured into the living body.
  • the introduction needle 251 is removed from the lumen of the needle tube 220 when the puncture aid 250 is removed from the puncture portion 230.
  • the puncture assisting tool 250 is removed, and the puncture portion 230 is left on the body surface H of the user in a state where the needle tube 220 is indwelled in the living body.
  • the pusher 130 of the drug solution administration device 100 advances in the drug solution container 110, so that the drug solution filled in the drug solution container 110 passes through the flow path of the tube 240 and the puncture portion 230 and is passed through the cavity of the needle tube 220.
  • the liquid is sent to.
  • the introduction needle 251 can be composed of, for example, a metal needle. Further, the needle tube 220 can be made of, for example, a tubular member (cannula) made of resin.
  • the administration device 200 is configured as a patch type to be used by being attached to the body surface H of the user, similarly to the drug solution administration device 100.
  • a sheet-shaped attachment portion (not shown) that can be attached to the body surface H is provided on the contact surface (bottom surface) 231 of the puncture portion 230 of the administration device 200.
  • a peelable protective sheet is attached to the attachment surface of the attachment portion.
  • the chemical solution administration device 100 includes a chemical solution container 110, a pusher 130, a geared motor 141, a housing 120, a fixing member 170, and a holding member 180.
  • the chemical solution container 110 is filled with the chemical solution.
  • the pusher 130 pushes out the chemical solution in the chemical solution container 110.
  • the geared motor 141 includes a motor unit 144 and a gear head unit 145 connected to the motor unit 144, and generates a driving force for driving the pusher 130.
  • the housing 120 houses the geared motor 141.
  • the fixing member 170 fixes the gear head portion 145 to the housing 120.
  • the holding member 180 is hardened in a state of being arranged in the gap between the motor portion 144 and the housing 120, and the motor is positioned at a position where the axial center S1 of the motor portion 144 follows the axial center S2 of the gear head portion 145. Holds the portion 144.
  • the fixing member 170 and the holding member 180 fix the motor portion 144 and the gear head portion 145 to the housing 120. Therefore, when an impact such as a drop is applied, the motor portion 144 and the gear head portion 145 Separation can be suppressed. Further, in the uncured state, the holding member 180 maintains a relative positional relationship between the gear head portion 145 and the motor portion 144 in which the axial center S1 of the motor portion 144 is aligned with the axial center S2 of the gear head portion 145. As described above, the motor unit 144 is deformed according to the position of the motor unit 144.
  • the holding member 180 shifts to the cured state while maintaining the relative positional relationship between the gear head portion 145 and the motor portion 144.
  • the holding member 180 can hold the motor portion 144 at a position where the axial center S1 of the motor portion 144 follows the axial center S2 of the gear head portion 145. Therefore, the holding member 180 can suppress the reduction of the torque transmitted from the motor portion 144 to the gear head portion 145.
  • the chemical solution administration device 100 can suppress the reduction of the torque transmitted from the motor unit 144 to the gear head unit 145 while suppressing the separation of the motor unit 144 and the gear head unit 145 when an impact such as dropping is applied. ..
  • the holding member 180 is arranged so as to fill the gap G1 between the housing 120 and the motor portion 144. Therefore, the holding member 180 can suitably hold the motor portion 144 at a position where the axial center S1 of the motor portion 144 follows the axial center S2 of the gear head portion 145.
  • the housing 120 includes an accommodating portion 128 accommodating the holding member 180 at a position separated from the connecting portion between the motor portion 144 and the gear head portion 145 and facing the motor portion 144. Therefore, the accommodating portion 128 can prevent the holding member 180 from adhering to the connecting portion between the motor portion 144 and the gear head portion 145 and invading the inside of the geared motor 141.
  • the fixing member 170 is fixed to the housing 120 in a state where the gear head portion 145 is pressed against the housing 120. Therefore, the fixing member 170 can effectively suppress the misalignment of the gear head portion 145.
  • a protrusion 145e is formed on the outer surface of the gear head portion 145, and the fixing member 170 has a groove portion 171a on which the protrusion 145e is arranged on a surface facing the gear head portion 145. Therefore, the fixing member 170 can suppress the rotation of the gear side case 145c.
  • the fixing member 170 is formed of a material having a spring property. Therefore, the fixing member 170 can suppress the impact such as dropping from being transmitted to the gear head portion 145.
  • the holding member 180 is an adhesive material hardened in the gap between the housing 120 and the motor portion 144. Therefore, the holding member 180 can suitably hold the motor portion 144 with respect to the housing by adhering to both the motor portion 144 and the housing 120.
  • the holding member may hold the gear head portion, and the fixing member may fix the motor portion.
  • a protrusion may be formed on the outer surface of the motor portion, and the fixing member may have a groove portion on which the protrusion is arranged on the surface facing the motor portion.
  • the rotation of the gear side case is not suppressed by arranging the protrusion formed on the outer surface of the gear head portion (or motor portion) in the groove portion of the fixing member, for example, the gear head portion (or the motor portion).
  • the rotation of the gear side case (or motor side case) is suppressed by arranging the protrusions formed on the surface of the housing facing the gear head part (or the motor part) in the groove formed on the outer surface of the motor part). You may.
  • the holding member is not particularly limited as long as it is a curable composition capable of shifting from an uncured state to a cured state and holding a motor portion or a gear head portion.
  • the curable composition is not particularly limited, and is, for example, a photocurable composition containing a photopolymerization initiator and a polymerizable compound, a thermosetting composition containing a thermal polymerization initiator and a polymerizable compound, and a thermosetting resin. , UV curable resin, curable composition containing a two-component mixed type curable resin, and the like.
  • the holding member is arranged so as to cover not only the gap between the housing and the motor portion (or the gear head portion) but also the motor portion (or the gear head portion) in the circumferential direction.
  • the motor section (or gear head section) may be held.
  • the shape of the fixing member is not particularly limited, and a known motor bracket can be used.
  • Chemical administration system 100 drug solution administration device, 110 chemical container, 120 housing, 122 chassis, 128 containment, 130 pusher, 141 geared motor, 144 Motor section, 145 gear head part, 145e protrusion, 170 fixing member, 171a groove, 180 holding member, 200 administration device, G1 gap, S1 Motor unit axis, Axial center of S2 gear head.

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  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Hematology (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Power Engineering (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)

Abstract

[Problem] To provide a liquid medicine administration device capable of suppressing the reduction of torque transferring from a motor portion to a gearhead portion while preventing the motor portion and the gearhead portion from being separated from each other when an impact such as a fall is applied. [Solution] The liquid medicine administration device 100 has: a liquid medicine container 110 filled with a liquid medicine; a plunger 130 for pushing out the liquid medicine in the liquid medicine container; a geared motor 141 that includes a motor portion 144 and a gearhead portion 145 connected to the motor portion and generates drive force for driving the plunger; a housing 120 for housing the geared motor; a fixing member 170 for fixing one member of the motor portion and the gearhead portion to the housing; and a holding member 180 hardening in a state of being disposed in the space between the other member of the motor portion and the gearhead portion and the housing and holding the other member at a position in which the axial center of the other member follows the axial center of the one member.

Description

薬液投与装置Chemical administration device
　本発明は、薬液投与装置に関する。 The present invention relates to a drug solution administration device.
　従来から、薬液容器に充填した薬液を押し子の押圧作用により生体内に投与するシリンジポンプ型の薬液投与装置が知られている。押し子は、例えば、モータの回転駆動力による薬液容器内への押し込みに伴って薬液を薬液容器から吐出させるように構成することができる。 Conventionally, a syringe pump type drug solution administration device that administers a drug solution filled in a drug solution container into a living body by a pressing action of a pusher has been known. The pusher can be configured to discharge the chemical solution from the chemical solution container as the pusher is pushed into the chemical solution container by the rotational driving force of the motor, for example.
　モータは、押し子を薬液の充填された薬液容器内に押し進めるために十分なトルクを発生することが求められる。下記特許文献１には、十分なトルクを発生させるモータとして、回転駆動力を発生するモータ部と、モータ部に連結されてモータ部から伝わる回転駆動力を減速して出力するギアヘッド部と、含むギアードモータが開示されている。 The motor is required to generate sufficient torque to push the pusher into the chemical solution container filled with the chemical solution. Patent Document 1 below includes a motor unit that generates a rotational driving force and a gear head unit that is connected to the motor unit and decelerates and outputs the rotational driving force transmitted from the motor unit as a motor that generates a sufficient torque. Geared motors are disclosed.
特開２０１５－１８１８３５号公報Japanese Unexamined Patent Publication No. 2015-181835
　本発明者らの検討によれば、ギアードモータのモータ部およびギアヘッド部のうちの一方の部材のみを固定部材によって薬液投与装置のハウジングに固定した場合、落下等の衝撃によってモータ部とギアヘッド部とが分離する可能性があることが判明した。したがって、モータ部とギアヘッド部が不用意に分離することを抑制するためには、モータ部およびギアヘッド部の両方をハウジングに固定することが望ましいと考えられる。 According to the study by the present inventors, when only one member of the motor part and the gear head part of the geared motor is fixed to the housing of the chemical solution administration device by the fixing member, the motor part and the gear head part are caused by an impact such as dropping. It turns out that there is a possibility of separation. Therefore, in order to prevent the motor portion and the gear head portion from being inadvertently separated, it is considered desirable to fix both the motor portion and the gear head portion to the housing.
　しかしながら、本発明者らの検討によれば、モータ部とギアヘッド部の分離を抑制するために、モータ部とギアヘッド部のうちの一方の部材に加えて他方の部材も固定部材でハウジングに固定した場合、モータ部とギアヘッド部を固定する各々の固定部材の加工精度等に起因して、モータ部とギアヘッド部とが相対的に位置ずれした状態で固定されることが判明した。そして、モータ部とギアヘッド部とが相対的に位置ずれした状態では、モータ部の軸心に対してギアヘッド部の軸心がアライメントされず、モータ部からギアヘッド部に伝わるトルクが低減することが判明した。 However, according to the study by the present inventors, in order to suppress the separation of the motor portion and the gear head portion, in addition to one member of the motor portion and the gear head portion, the other member is also fixed to the housing by a fixing member. In this case, it was found that the motor portion and the gear head portion are fixed in a relatively displaced state due to the processing accuracy of each fixing member for fixing the motor portion and the gear head portion. Then, it was found that when the motor portion and the gear head portion are relatively misaligned, the axial center of the gear head portion is not aligned with the axial center of the motor portion, and the torque transmitted from the motor portion to the gear head portion is reduced. did.
　そこで、本発明の目的は、落下等の衝撃が加わった場合においてモータ部とギアヘッド部との分離を抑制しつつ、モータ部からギアヘッド部に伝わるトルクの低減を抑制できる薬液投与装置を提供することである。 Therefore, an object of the present invention is to provide a chemical administration device capable of suppressing a reduction in torque transmitted from a motor portion to a gear head portion while suppressing separation between a motor portion and a gear head portion when an impact such as a drop is applied. Is.
　本発明の薬液投与装置は、薬液が充填された薬液容器と、前記薬液容器内の前記薬液を押し出す押し子と、モータ部および前記モータ部に連結されるギアヘッド部を含み、前記押し子を駆動するための駆動力を発生するギアードモータと、前記ギアードモータを収容するハウジングと、前記モータ部および前記ギアヘッド部のうちの一方の部材を前記ハウジングに固定する固定部材と、前記モータ部および前記ギアヘッド部のうちの他方の部材と前記ハウジングとの間の隙間に配置された状態で硬化しており、前記一方の部材の軸心に対して前記他方の部材の軸心が倣った位置に前記他方の部材を保持する保持部材と、を有する。 The chemical solution administration device of the present invention includes a chemical solution container filled with a chemical solution, a pusher for pushing out the chemical solution in the chemical solution container, a motor portion, and a gear head portion connected to the motor portion, and drives the pusher. A geared motor that generates a driving force for the motor, a housing that houses the geared motor, a fixing member that fixes one of the motor portion and the gear head portion to the housing, the motor portion, and the gear head. The other member is hardened in a state of being arranged in the gap between the other member of the portion and the housing, and the other member is located at a position where the axis of the other member follows the axis of the one member. It has a holding member for holding the member of the above.
　本発明の薬液投与装置によれば、落下等の衝撃が加わった場合においてモータ部とギアヘッド部との分離を抑制しつつ、モータ部からギアヘッド部に伝わるトルクの低減を抑制できる。 According to the chemical solution administration device of the present invention, it is possible to suppress the reduction of the torque transmitted from the motor portion to the gear head portion while suppressing the separation between the motor portion and the gear head portion when an impact such as dropping is applied.
実施形態に係る薬液投与システムの側面図である。It is a side view of the drug solution administration system which concerns on embodiment. 実施形態に係る薬液投与システムの使用例を模式的に示す図である。It is a figure which shows typically the use example of the drug solution administration system which concerns on embodiment. 実施形態に係る薬液投与システムを構成する薬液投与装置の概観斜視図である。It is an overview perspective view of the drug solution administration apparatus constituting the drug solution administration system which concerns on embodiment. 実施形態に係る薬液投与装置の分解斜視図である。It is an exploded perspective view of the drug solution administration apparatus which concerns on embodiment. 実施形態に係る薬液投与装置のギアードモータおよびその周辺を示す斜視図である。It is a perspective view which shows the geared motor of the chemical solution administration apparatus which concerns on embodiment, and its periphery. 実施形態に係るギアードモータおよびその周辺を示す分解斜視図である。It is an exploded perspective view which shows the geared motor which concerns on embodiment and its periphery. 実施形態に係るギアードモータを構成するモータ部の軸心とギアヘッド部の軸心との位置関係の一例の説明に供する図である。It is a figure which provides the explanation of an example of the positional relationship between the axis of the motor part which constitutes the geared motor which concerns on embodiment, and the axis of a gear head part. 比較例に係るギアードモータを構成するモータ部の軸心とギアヘッド部の軸心との位置関係の説明に供する図である。It is a figure which provides the explanation of the positional relationship between the axis of the motor part which constitutes the geared motor which concerns on a comparative example, and the axis of a gear head part. 実施形態に係るギアードモータを構成するモータ部の軸心とギアヘッド部の軸心との位置関係の一例の説明に供する図である。It is a figure which provides the explanation of an example of the positional relationship between the axis of the motor part which constitutes the geared motor which concerns on embodiment, and the axis of a gear head part. 比較例に係るギアードモータを構成するモータ部の軸心とギアヘッド部の軸心との位置関係の説明に供する図である。It is a figure which provides the explanation of the positional relationship between the axis of the motor part which constitutes the geared motor which concerns on a comparative example, and the axis of a gear head part. 図５の９－９線に沿う断面図である。It is sectional drawing which follows the line 9-9 of FIG. 図５の１０－１０線に沿う断面図である。It is sectional drawing which follows the line 10-10 of FIG. 図５の１１－１１線に沿う部分断面図である。FIG. 5 is a partial cross-sectional view taken along line 11-11 of FIG. ギアードモータのハウジングへの取り付け方法の説明に供する図である。It is a figure which provides the explanation of the attachment method to the housing of a geared motor. ギアードモータのハウジングへの取り付け方法の説明に供する図である。It is a figure which provides the explanation of the attachment method to the housing of a geared motor. ギアードモータのハウジングへの取り付け方法の説明に供する図である。It is a figure which provides the explanation of the attachment method to the housing of a geared motor. ギアードモータのハウジングへの取り付け方法の説明に供する図である。It is a figure which provides the explanation of the attachment method to the housing of a geared motor.
　以下、添付した図面を参照しながら、本発明の実施形態を説明する。なお、以下の記載は特許請求の範囲に記載される技術的範囲や用語の意義を限定するものではない。また、図面の寸法比率は説明の都合上誇張されており、実際の比率とは異なる場合がある。 Hereinafter, embodiments of the present invention will be described with reference to the attached drawings. The following description does not limit the technical scope and meaning of terms described in the claims. In addition, the dimensional ratios in the drawings are exaggerated for convenience of explanation and may differ from the actual ratios.
　図１～図１１は、実施形態に係る薬液投与システム１０、薬液投与装置１００、および投与器具２００の説明に供する図である。図１２Ａ～図１２Ｄは、ギアードモータ１４１のハウジング１２０への取り付け方法の説明に供する図である。各図に付した矢印Ｘは、薬液投与装置１００の「長手方向（薬液容器１１０の長手方向）」を示し、矢印Ｙは、薬液投与装置１００の「幅方向（奥行方向）」を示し、矢印Ｚは、薬液投与装置１００の「高さ方向」を示す。 1 to 11 are views provided for explaining the drug solution administration system 10, the drug solution administration device 100, and the administration device 200 according to the embodiment. 12A to 12D are views for explaining a method of attaching the geared motor 141 to the housing 120. The arrow X attached to each figure indicates the "longitudinal direction (longitudinal direction of the chemical solution container 110)" of the chemical solution administration device 100, and the arrow Y indicates the "width direction (depth direction)" of the chemical solution administration device 100. Z indicates the "height direction" of the drug solution administration device 100.
　（薬液投与システム）
　薬液投与システム１０は、薬液を生体内に投与するために使用される。図１に示すように、薬液投与システム１０は、薬液投与装置１００と、投与器具２００と、を備える。 (Chemical solution administration system)
The drug solution administration system 10 is used to administer the drug solution in vivo. As shown in FIG. 1, the drug solution administration system 10 includes a drug solution administration device 100 and an administration device 200.
　図２に示すように、薬液投与装置１００および投与器具２００は、使用者の体表面（皮膚）Ｈに貼り付けて使用するパッチタイプとして構成している。薬液投与装置１００および投与器具２００を取り付ける使用者の身体の部位は特に限定されないが、例えば、腹部や大腿部である。 As shown in FIG. 2, the drug solution administration device 100 and the administration device 200 are configured as a patch type to be used by being attached to the body surface (skin) H of the user. The body part of the user to which the drug solution administration device 100 and the administration device 200 are attached is not particularly limited, and is, for example, the abdomen or the thigh.
　薬液投与システム１０は、例えば、薬液投与装置１００が備える薬液容器１１０内に充填された薬液（図示省略）を、後述する押し子１３０による押圧作用により、比較的長い時間（例えば、数分～数時間程度）をかけて持続的に生体内に投与することができる。なお、薬液投与システム１０は、薬液を間欠的に生体内に投与してもよい。 In the chemical solution administration system 10, for example, the chemical solution (not shown) filled in the chemical solution container 110 included in the chemical solution administration device 100 is pressed by a pusher 130 described later for a relatively long time (for example, several minutes to several minutes). It can be continuously administered in vivo over a period of time). The drug solution administration system 10 may intermittently administer the drug solution into the living body.
　（薬液投与装置）
　薬液投与装置１００は、図３および図４に示すように、薬液が充填される薬液容器１１０と、薬液容器１１０を保持するハウジング１２０と、薬液容器１１０内の薬液を押し出す押し子１３０と、押し子１３０を薬液容器１１０の先端開口部へ向けて前進させる駆動機構１４０と、駆動機構１４０の動作制御を行う制御部１５０と、を有している。 (Chemical solution administration device)
As shown in FIGS. 3 and 4, the chemical solution administration device 100 pushes the chemical solution container 110 filled with the chemical solution, the housing 120 for holding the chemical solution container 110, the pusher 130 for pushing out the chemical solution in the chemical solution container 110, and the pusher 130. It has a drive mechanism 140 for advancing the child 130 toward the tip opening of the chemical solution container 110, and a control unit 150 for controlling the operation of the drive mechanism 140.
　図３および図４に示すように、ハウジング１２０は、内部に収容空間が形成された箱型のハウジング本体部１２１と、ハウジング本体部１２１の収容空間に収容され、ハウジング本体部１２１に対して固定可能なシャーシ１２２と、収容空間にシャーシ１２２を収容した状態で、ハウジング本体部１２１に取り付けられる蓋部材１２３と、を有している。 As shown in FIGS. 3 and 4, the housing 120 is housed in a box-shaped housing main body 121 having an accommodating space formed therein and an accommodating space of the housing main body 121, and is fixed to the housing main body 121. It has a possible chassis 122 and a lid member 123 that is attached to the housing main body 121 with the chassis 122 housed in the housing space.
　図３および図４に示すように、ハウジング本体部１２１の上面１２１ａには、ハウジング１２０の外部から収容空間内を視認可能にする窓部１２４が形成されている。窓部１２４は、ハウジング本体部１２１の一部に透明または半透明な部分を設けることで形成している。 As shown in FIGS. 3 and 4, a window portion 124 is formed on the upper surface 121a of the housing main body portion 121 so that the inside of the accommodation space can be visually recognized from the outside of the housing 120. The window portion 124 is formed by providing a transparent or translucent portion in a part of the housing main body portion 121.
　図４に示すように、ハウジング本体部１２１の長手方向の基端側には、シャーシ１２２をハウジング本体部１２１の収容空間に挿入するための基端開口部１２５が形成されている。図３および図４に示すように、ハウジング本体部１２１の基端開口部１２５は、収容空間にシャーシ１２２を収容した状態で、蓋部材１２３により閉じられる。 As shown in FIG. 4, a base end opening 125 for inserting the chassis 122 into the accommodation space of the housing main body 121 is formed on the base end side of the housing main body 121 in the longitudinal direction. As shown in FIGS. 3 and 4, the base end opening 125 of the housing main body 121 is closed by the lid member 123 with the chassis 122 accommodated in the accommodation space.
　図４に示すように、ハウジング本体部１２１の底面１２１ｂには、使用者の体表面Ｈに貼着可能なシート状の貼着部（図示省略）を設けている。薬液投与装置１００を使用者に取り付ける前の初期状態において、貼着部の貼着面には、剥離可能な保護シートが取り付けられる。 As shown in FIG. 4, a sheet-shaped attachment portion (not shown) that can be attached to the body surface H of the user is provided on the bottom surface 121b of the housing main body portion 121. In the initial state before attaching the chemical solution administration device 100 to the user, a peelable protective sheet is attached to the attachment surface of the attachment portion.
　シャーシ１２２には、薬液容器１１０と、押し子１３０と、駆動機構１４０と、制御部１５０と、電源部１６０と、が保持されている。 The chassis 122 holds a chemical solution container 110, a pusher 130, a drive mechanism 140, a control unit 150, and a power supply unit 160.
　薬液容器１１０は、いわゆるプレフィルド型の薬液容器で構成している。そのため、薬液は、薬液容器１１０の内腔１１１内に予め充填されている。薬液としては、例えば、タンパク質製剤、麻薬性鎮痛薬、利尿薬等が挙げられる。 The chemical solution container 110 is composed of a so-called prefilled chemical solution container. Therefore, the chemical solution is pre-filled in the cavity 111 of the chemical solution container 110. Examples of the drug solution include protein preparations, narcotic analgesics, diuretics and the like.
　薬液容器１１０の先端部１１２に形成された先端開口部（吐出口）には、薬液が漏洩するのを防止するための封止部材（図示省略）を配置している。図３に示すように、薬液容器１１０の先端部１１２は、ハウジング本体部１２１から外部に突出するように配置される。また、薬液容器１１０においてハウジング本体部１２１から突出した先端部には、後述するチューブ２４０（図１を参照）との接続がなされる装着部１１５を取り付けている。 A sealing member (not shown) for preventing leakage of the chemical solution is arranged at the tip opening (discharge port) formed at the tip end 112 of the chemical solution container 110. As shown in FIG. 3, the tip portion 112 of the chemical solution container 110 is arranged so as to project outward from the housing main body portion 121. Further, a mounting portion 115 that is connected to a tube 240 (see FIG. 1), which will be described later, is attached to a tip portion of the chemical solution container 110 that protrudes from the housing main body portion 121.
　図４に示すように、薬液容器１１０の内腔１１１には、押し子１３０が挿入される。押し子１３０の先端には、薬液容器１１０の内壁と摺動可能なガスケット１３１を配置している。ガスケット１３１は、ガスケット１３１の外周部が薬液容器１１０の内周面と液密に密着することにより、ガスケット１３１の基端側を液密に封止する。 As shown in FIG. 4, the pusher 130 is inserted into the cavity 111 of the chemical solution container 110. At the tip of the pusher 130, a gasket 131 slidable with the inner wall of the chemical liquid container 110 is arranged. In the gasket 131, the outer peripheral portion of the gasket 131 is in close contact with the inner peripheral surface of the chemical liquid container 110 in a liquid-tight manner, thereby sealing the base end side of the gasket 131 in a liquid-tight manner.
　駆動機構１４０は、電源部１６０から駆動電流を受給して回転駆動力を生じさせるギアードモータ１４１と、ギアードモータ１４１の回転駆動力を伝達する歯車等を備える減速機構１４２と、減速機構１４２に接続された送りネジ１４３と、を有している。 The drive mechanism 140 is connected to a geared motor 141 that receives a drive current from the power supply unit 160 to generate a rotational drive force, a reduction mechanism 142 including gears that transmit the rotational drive force of the geared motor 141, and a reduction mechanism 142. It has a feed screw 143 and the like.
　ギアードモータ１４１の構造およびギアードモータ１４１のハウジング１２０への取り付け構造および取り付け方法については、後述する。 The structure of the geared motor 141 and the mounting structure and mounting method of the geared motor 141 to the housing 120 will be described later.
　送りネジ１４３は、押し子１３０の基端付近に螺合している。送りネジ１４３は、減速機構１４２から伝達された回転運動を直線運動に変換して、押し子１３０を長手方向（Ｘ方向）に前進させる。押し子１３０は、薬液容器１１０の先端側へ向けて前進することにより、薬液容器１１０の内腔１１１からチューブ２４０（図１を参照）へ薬液を押し出す。 The feed screw 143 is screwed near the base end of the pusher 130. The lead screw 143 converts the rotary motion transmitted from the speed reduction mechanism 142 into a linear motion, and advances the pusher 130 in the longitudinal direction (X direction). The pusher 130 pushes the chemical solution from the cavity 111 of the chemical solution container 110 into the tube 240 (see FIG. 1) by advancing toward the tip end side of the chemical solution container 110.
　制御部１５０は、薬液投与装置１００の薬液の送液動作を制御する。制御部１５０は、例えば、ＣＰＵ、ＲＡＭ、ＲＯＭ等を実装した公知のマイクロコンピュータ（電子回路素子）により構成することができる。制御部１５０は、駆動機構１４０、電源部１６０の動作制御を統括的に実行する。 The control unit 150 controls the liquid feeding operation of the chemical liquid of the chemical liquid administration device 100. The control unit 150 can be configured by, for example, a known microcomputer (electronic circuit element) equipped with a CPU, RAM, ROM, or the like. The control unit 150 comprehensively executes the operation control of the drive mechanism 140 and the power supply unit 160.
　電源部１６０は、例えば、公知の電池等で構成することができる。 The power supply unit 160 can be composed of, for example, a known battery or the like.
　次に、図５～図１１を参照して、ギアードモータ１４１の構造およびギアードモータ１４１のハウジング１２０への取り付け構造について説明する。 Next, the structure of the geared motor 141 and the mounting structure of the geared motor 141 to the housing 120 will be described with reference to FIGS. 5 to 11.
　ギアードモータ１４１は、減速機付きモータとも呼ばれる。ギアードモータ１４１は、図５および図６に示すように、回転駆動するモータ部１４４と、モータ部１４４に連結されてモータ部１４４から伝わる回転駆動力を減速して出力するギアヘッド部１４５と、を有する。このように、ギアードモータ１４１は、ギアヘッド部１４５がモータ部１４４から伝わる回転駆動力を減速して出力するため、出力トルクを増大させることができる。そのため、ギアードモータ１４１は、減速機構１４２とともに、押し子１３０を薬液が充填された薬液容器１１０内に押し込むために十分なトルクを発生させることができる。 The geared motor 141 is also called a motor with a speed reducer. As shown in FIGS. 5 and 6, the geared motor 141 includes a motor unit 144 that is rotationally driven, and a gear head unit 145 that is connected to the motor unit 144 and decelerates and outputs a rotational driving force transmitted from the motor unit 144. Have. As described above, in the geared motor 141, the gear head portion 145 decelerates and outputs the rotational driving force transmitted from the motor portion 144, so that the output torque can be increased. Therefore, the geared motor 141, together with the speed reduction mechanism 142, can generate a sufficient torque to push the pusher 130 into the chemical liquid container 110 filled with the chemical liquid.
　図６に示すように、モータ部１４４は、ステータ１４４ａと、ステータ１４４ａ内に配置されてステータ１４４ａによって回転されるロータ１４４ｂと、ロータ１４４ｂに連結されてロータ１４４ｂとともに回転するモータシャフト１４４ｃと、これらを収容するモータ側ケース１４４ｄと、を有する。 As shown in FIG. 6, the motor unit 144 includes a stator 144a, a rotor 144b arranged in the stator 144a and rotated by the stator 144a, a motor shaft 144c connected to the rotor 144b and rotating together with the rotor 144b, and the like. It has a motor side case 144d and a case for accommodating the above.
　ギアヘッド部１４５は、モータシャフト１４４ｃから入力された回転駆動力を減速して出力する歯車減速機構１４５ａと、歯車減速機構１４５ａによって減速された回転駆動力を出力する出力シャフト１４５ｂと、これらを収容するギア側ケース１４５ｃと、を有する。 The gear head portion 145 accommodates a gear reduction mechanism 145a that decelerates and outputs the rotational driving force input from the motor shaft 144c, and an output shaft 145b that outputs the rotational driving force decelerated by the gear reduction mechanism 145a. It has a gear side case 145c and.
　歯車減速機構１４５ａは、複数のギアの組み合わせ（図示省略）によって構成している。歯車減速機構１４５ａを構成する複数のギアの組合せは、特に限定されないが、遊星歯車減速機構等の公知の歯車減速機構を用いることができる。モータシャフト１４４ｃは、図７Ａに例示するように、歯車減速機構１４５ａを構成する少なくとも一のギア（以下、入力ギア１４５ｄと称する）とカップリングし、入力ギア１４５ｄに回転駆動力を入力する。モータシャフト１４４ｃは、例えば、図７Ａに示すように、入力ギア１４５ｄに挿入されることによってカップリングしてもよい。また、モータシャフト１４４ｃは、例えば、図８Ａに示すように、モータシャフト１４４ｃにピニオンＰを形成し、モータシャフト１４４ｃのピニオンＰを入力ギア１４５ｄと噛合せることによってカップリングさせてもよい。 The gear reduction mechanism 145a is composed of a combination of a plurality of gears (not shown). The combination of a plurality of gears constituting the gear reduction mechanism 145a is not particularly limited, but a known gear reduction mechanism such as a planetary gear reduction mechanism can be used. As illustrated in FIG. 7A, the motor shaft 144c is coupled with at least one gear (hereinafter, referred to as an input gear 145d) constituting the gear reduction mechanism 145a, and a rotational driving force is input to the input gear 145d. The motor shaft 144c may be coupled by being inserted into the input gear 145d, for example, as shown in FIG. 7A. Further, the motor shaft 144c may be coupled by forming a pinion P on the motor shaft 144c and engaging the pinion P of the motor shaft 144c with the input gear 145d, for example, as shown in FIG. 8A.
　出力シャフト１４５ｂは、歯車減速機構１４５ａを構成する少なくとも一のギア（図示省略）とカップリングしている。図６に示すように、出力シャフト１４５ｂは、ギア側ケース１４５ｃの外部に突出しており、減速機構１４２に回転駆動力を伝達する。 The output shaft 145b is coupled with at least one gear (not shown) constituting the gear reduction mechanism 145a. As shown in FIG. 6, the output shaft 145b projects to the outside of the gear side case 145c and transmits the rotational driving force to the reduction mechanism 142.
　モータ側ケース１４４ｄおよびギア側ケース１４５ｃは、互いに連結している。モータ側ケース１４４ｄおよびギア側ケース１４５ｃは、本実施形態では、略円筒形状を有する。ギア側ケース１４５ｃの外面には、径方向外方に向かって突出する突起１４５ｅが形成されている。ただし、モータ側ケース１４４ｄおよびギア側ケース１４５ｃの形状は特に限定されない。 The motor side case 144d and the gear side case 145c are connected to each other. The motor-side case 144d and the gear-side case 145c have a substantially cylindrical shape in the present embodiment. A protrusion 145e is formed on the outer surface of the gear side case 145c so as to project outward in the radial direction. However, the shapes of the motor side case 144d and the gear side case 145c are not particularly limited.
　図９に示すように、ギアヘッド部１４５は、固定部材１７０によってハウジング１２０のシャーシ１２２に固定されている。なお、本明細書において「固定部材」とは、ギアードモータをハウジングに組み付ける際にギアードモータが押付けられても容易に変形しない程度の硬度を備え、ギアードモータをハウジングに固定できる部材（すなわちブラケット等）を意味する。 As shown in FIG. 9, the gear head portion 145 is fixed to the chassis 122 of the housing 120 by the fixing member 170. In the present specification, the "fixing member" is a member (that is, a bracket, etc.) capable of fixing the geared motor to the housing, having a hardness that does not easily deform even if the geared motor is pressed when the geared motor is assembled to the housing. ) Means.
　固定部材１７０は、本実施形態では、シャーシ１２２との間にギアヘッド部１４５を挟み込むように配置される挟持部１７１と、挟持部１７１の両端部に連なるとともに、シャーシ１２２に向かって延在し、挟持部１７１をシャーシ１２２に固定する一対の固定部１７２、１７３と、を有する。すなわち、固定部材１７０は、略逆Ｕの字状の外形を有している。ただし、固定部材１７０の外形は、ギアヘッド部１４５をシャーシ１２２に固定できる限り特に限定されない。 In the present embodiment, the fixing member 170 is connected to both ends of the sandwiching portion 171 and the sandwiching portion 171 arranged so as to sandwich the gear head portion 145 with the chassis 122, and extends toward the chassis 122. It has a pair of fixing portions 172 and 173 for fixing the holding portion 171 to the chassis 122. That is, the fixing member 170 has a substantially inverted U-shaped outer shape. However, the outer shape of the fixing member 170 is not particularly limited as long as the gear head portion 145 can be fixed to the chassis 122.
　挟持部１７１においてギアヘッド部１４５に対向する面には、ギアヘッド部１４５の突起１４５ｅが配置される溝部１７１ａが形成されている。そのため、固定部材１７０は、ギア側ケース１４５ｃが回転することを抑制できる。 A groove portion 171a in which the protrusion 145e of the gear head portion 145 is arranged is formed on the surface of the sandwiching portion 171 facing the gear head portion 145. Therefore, the fixing member 170 can suppress the rotation of the gear side case 145c.
　一対の固定部１７２、１７３は、挟持部１７１がギアヘッド部１４５に押し付けられた状態で、シャーシ１２２に固定されている。そのため、固定部材１７０は、ギアヘッド部１４５の位置ずれを効果的に抑制できる。一対の固定部１７２、１７３には、本実施形態では、後述するシャーシ１２２の一対の突起１２６ａ、１２６ｂが挿入される貫通孔１７２ａ、１７３ａが形成されている。一対の固定部１７２、１７３は、一対の突起１２６ａ、１２６ｂに係合することによってシャーシ１２２に固定される。ただし、固定部材１７０をハウジング１２０に固定する方法は特に限定されない。例えば、固定部材１７０は、ねじ留めされることによってハウジングに固定されてもよい。 The pair of fixing portions 172 and 173 are fixed to the chassis 122 in a state where the holding portion 171 is pressed against the gear head portion 145. Therefore, the fixing member 170 can effectively suppress the misalignment of the gear head portion 145. In the present embodiment, the pair of fixing portions 172 and 173 are formed with through holes 172a and 173a into which the pair of protrusions 126a and 126b of the chassis 122, which will be described later, are inserted. The pair of fixing portions 172 and 173 are fixed to the chassis 122 by engaging with the pair of protrusions 126a and 126b. However, the method of fixing the fixing member 170 to the housing 120 is not particularly limited. For example, the fixing member 170 may be fixed to the housing by being screwed.
　固定部材１７０は、本実施形態では、バネ性を有する材料によって形成されている。そのような材料としては、例えば、ポリカーボネート（ＰＣ）やポリオキシメチレン（ＰＯＭ）等が挙げられる。固定部材１７０がバネ性を備えることで、薬液投与装置１００が落下した際に、ギアードモータ１４１に伝わる衝撃を抑制することができる。ただし、固定部材１７０を形成する材料は、バネ性を備えていなくてもよく、公知の樹脂材料や金属材料を用いることができる。 In the present embodiment, the fixing member 170 is formed of a springy material. Examples of such a material include polycarbonate (PC) and polyoxymethylene (POM). Since the fixing member 170 has a spring property, it is possible to suppress the impact transmitted to the geared motor 141 when the chemical solution administration device 100 is dropped. However, the material forming the fixing member 170 does not have to have springiness, and a known resin material or metal material can be used.
　本発明者らの検討によれば、ギアヘッド部１４５のみを固定部材１７０によってシャーシ１２２に固定した場合、落下等の衝撃によってモータ部１４４とギアヘッド部１４５とが分離する可能性があることが判明した。したがって、モータ部１４４とギアヘッド部１４５が不用意に分離することを抑制する観点から、モータ部１４４およびギアヘッド部１４５の両方をシャーシ１２２に固定することが望ましい。 According to the studies by the present inventors, it has been found that when only the gear head portion 145 is fixed to the chassis 122 by the fixing member 170, the motor portion 144 and the gear head portion 145 may be separated by an impact such as dropping. .. Therefore, from the viewpoint of suppressing careless separation of the motor portion 144 and the gear head portion 145, it is desirable to fix both the motor portion 144 and the gear head portion 145 to the chassis 122.
　ところで、図７Ａに例示するように、モータ部１４４の出力するトルクをギアヘッド部１４５に伝達する観点から、モータ部１４４の軸心Ｓ１と、ギアヘッド部１４５の軸心Ｓ２と、はアライメントされている必要がある。ここで、モータ部１４４の軸心Ｓ１とは、モータシャフト１４４ｃの軸心Ｓ１を意味し、ギアヘッド部１４５の軸心Ｓ２とは、モータシャフト１４４ｃとカップリングする入力ギア１４５ｄの軸心Ｓ２を意味する。また、「アライメントされた状態」とは、モータ部１４４の軸心Ｓ１とギアヘッド部１４５の軸心Ｓ２とが、十分なトルク（例えば定格トルク）を出力できるように、適切な位置関係にある状態を意味する。したがって、例えば、図７Ａに示すように、モータシャフト１４４ｃが入力ギア１４５ｄの軸受け部に挿入される場合、アライメントされた状態とは、モータシャフト１４４ｃの軸心Ｓ１と入力ギア１４５ｄの軸心Ｓ２とが略同一直線上に位置する状態を意味する。また、図８Ａに示すように、モータシャフト１４４ｃが例えばピニオンＰが形成されたシャフトである場合、アライメントされた状態とは、モータシャフト１４４ｃの軸心Ｓ１と入力ギア１４５ｄの軸心Ｓ２とが略平行に位置する状態を意味する。 By the way, as illustrated in FIG. 7A, the axis S1 of the motor unit 144 and the axis S2 of the gear head unit 145 are aligned from the viewpoint of transmitting the torque output by the motor unit 144 to the gear head unit 145. There is a need. Here, the axis S1 of the motor unit 144 means the axis S1 of the motor shaft 144c, and the axis S2 of the gear head unit 145 means the axis S2 of the input gear 145d that couples with the motor shaft 144c. To do. Further, the "aligned state" is a state in which the axis S1 of the motor unit 144 and the axis S2 of the gear head unit 145 are in an appropriate positional relationship so that sufficient torque (for example, rated torque) can be output. Means. Therefore, for example, as shown in FIG. 7A, when the motor shaft 144c is inserted into the bearing portion of the input gear 145d, the aligned state is the axis S1 of the motor shaft 144c and the axis S2 of the input gear 145d. Means that they are located on substantially the same straight line. Further, as shown in FIG. 8A, when the motor shaft 144c is, for example, a shaft on which a pinion P is formed, the aligned state means that the axis S1 of the motor shaft 144c and the axis S2 of the input gear 145d are abbreviated. It means a state in which they are located in parallel.
　しかしながら、本発明者らの検討によれば、落下時の分離を抑制するために、モータ部１４４も固定部材（ブラケット等）でシャーシ１２２に固定した場合、各固定部材の加工の精度等に起因して、モータ部１４４がギアヘッド部１４５に対して位置ずれし、ギアードモータ１４１が屈曲することが判明した。そして、図７Ｂおよび図８Ｂに例示するように、ギアードモータ１４１が屈曲した状態では、モータ部１４４の軸心Ｓ１に対してギアヘッド部１４５の軸心Ｓ２がアライメントされず、モータ部１４４からギアヘッド部１４５に伝わるトルクが低減することが判明した。 However, according to the study by the present inventors, when the motor unit 144 is also fixed to the chassis 122 with a fixing member (bracket or the like) in order to suppress the separation when dropped, it is caused by the processing accuracy of each fixing member or the like. Then, it was found that the motor portion 144 was displaced with respect to the gear head portion 145, and the geared motor 141 was bent. Then, as illustrated in FIGS. 7B and 8B, when the geared motor 141 is bent, the axis S2 of the gear head portion 145 is not aligned with the axis S1 of the motor portion 144, and the motor portion 144 to the gear head portion It was found that the torque transmitted to 145 was reduced.
　本発明者らは、鋭意検討した結果、ギアードモータ１４１のシャーシ１２２への組み付けの際に未硬化状態（軟化状態）から硬化状態に移行する保持部材１８０（硬化性組成物）によって、モータ部１４４をシャーシ１２２に保持することで上記課題を解決できることを見出した。ここで、未硬化状態とは、ギアードモータ１４１が押付けられた際に容易に変形可能な状態を意味する。 As a result of diligent studies, the present inventors have made the motor unit 144 by the holding member 180 (curable composition) that shifts from the uncured state (softened state) to the cured state when the geared motor 141 is assembled to the chassis 122. It was found that the above problem can be solved by holding the above-mentioned in the chassis 122. Here, the uncured state means a state in which the geared motor 141 can be easily deformed when pressed.
　図１０および図１１に示すように、保持部材１８０は、ギアードモータ１４１のシャーシ１２２への取り付けの際に、モータ部１４４とシャーシ１２２との間の隙間に未硬化状態で配置される。保持部材１８０は、未硬化状態では、ギアヘッド部１４５の軸心Ｓ２に対してモータ部１４４の軸心Ｓ１がアライメントされたギアヘッド部１４５とモータ部１４４との相対的な位置関係が維持されるように、モータ部１４４の位置に応じて変形する。そして、保持部材１８０は、ギアヘッド部１４５とモータ部１４４との相対的な位置関係が維持したまま硬化状態に移行する。その結果、保持部材１８０は、ギアヘッド部１４５の軸心Ｓ２に対してモータ部１４４の軸心Ｓ１が倣った位置（アライメントされた位置）にモータ部１４４を保持できる。そのため、薬液投与装置１００は、落下等の衝撃によるモータ部１４４とギアヘッド部１４５との分離を抑制しつつ、ギアードモータ１４１の出力するトルクが低減することを抑制できる。 As shown in FIGS. 10 and 11, the holding member 180 is arranged in an uncured state in the gap between the motor portion 144 and the chassis 122 when the geared motor 141 is attached to the chassis 122. In the uncured state, the holding member 180 maintains a relative positional relationship between the gear head portion 145 and the motor portion 144 in which the axial center S1 of the motor portion 144 is aligned with the axial center S2 of the gear head portion 145. In addition, it is deformed according to the position of the motor unit 144. Then, the holding member 180 shifts to the cured state while maintaining the relative positional relationship between the gear head portion 145 and the motor portion 144. As a result, the holding member 180 can hold the motor portion 144 at a position (aligned position) where the axial center S1 of the motor portion 144 follows the axial center S2 of the gear head portion 145. Therefore, the chemical solution administration device 100 can suppress the reduction of the torque output by the geared motor 141 while suppressing the separation of the motor unit 144 and the gear head unit 145 due to an impact such as dropping.
　保持部材１８０は、本実施形態では、接着剤によって構成している。そのため、保持部材１８０は、シャーシ１２２およびモータ部１４４に接着しつつ、未硬化状態では、ギアヘッド部１４５とモータ部１４４との相対的な位置関係を維持するように、モータ部１４４の位置に応じて容易に変形できる。 In this embodiment, the holding member 180 is made of an adhesive. Therefore, the holding member 180 is adhered to the chassis 122 and the motor portion 144, and in the uncured state, the holding member 180 corresponds to the position of the motor portion 144 so as to maintain the relative positional relationship between the gear head portion 145 and the motor portion 144. Can be easily deformed.
　次に、ギアードモータ１４１の周辺のシャーシ１２２の構造について説明する。 Next, the structure of the chassis 122 around the geared motor 141 will be described.
　図５および図６に示すように、シャーシ１２２は、ギアードモータ１４１を囲う枠部１２６と、枠部１２６内に配置され、ギアヘッド部１４５を支持するギアヘッド支持部１２７と、を有する。さらに、シャーシ１２２は、枠部１２６内に配置され、保持部材１８０を収容する収容部１２８と、を有する。 As shown in FIGS. 5 and 6, the chassis 122 has a frame portion 126 that surrounds the geared motor 141, and a gear head support portion 127 that is arranged in the frame portion 126 and supports the gear head portion 145. Further, the chassis 122 is arranged in the frame portion 126 and has an accommodating portion 128 for accommodating the holding member 180.
　図５および図６に示すように、枠部１２６は、出力シャフト１４５ｂを除いたギアードモータ１４１の周囲を囲むように設けられている。図９に示すように、枠部１２６において固定部材１７０の一対の固定部１７２、１７３に対向する面には、貫通孔１７２ａ、１７３ａに挿入される突起１２６ａ、１２６ｂが形成されている。 As shown in FIGS. 5 and 6, the frame portion 126 is provided so as to surround the periphery of the geared motor 141 excluding the output shaft 145b. As shown in FIG. 9, protrusions 126a and 126b to be inserted into the through holes 172a and 173a are formed on the surface of the frame portion 126 facing the pair of fixing portions 172 and 173 of the fixing member 170.
　ギアヘッド支持部１２７は、ギアヘッド部１４５の外周面に当接する。なお、ギアヘッド支持部１２７は、少なくとも一部がギアヘッド部１４５の外周面に当接すればよく、図示する形状に限定されない。 The gear head support portion 127 abuts on the outer peripheral surface of the gear head portion 145. The gear head support portion 127 may be at least partially in contact with the outer peripheral surface of the gear head portion 145, and is not limited to the shape shown in the drawing.
　図１１に示すように、収容部１２８は、ギアヘッド部１４５がギアヘッド支持部１２７に当接した状態で、モータ部１４４に対向するとともに、モータ部１４４とギアヘッド部１４５との連結部から離間する位置に設けられた一対の仕切り部１２８ａ、１２８ｂを有する。一対の仕切り部１２８ａ、１２８ｂは、互いに離間しており、間に保持部材１８０が配置される収容空間１２８ｃを形成する。そのため、収容部１２８は、保持部材１８０がモータ部１４４とギアヘッド部１４５との連結部に付着してギアードモータ１４１の内部に侵入することを抑制できる。 As shown in FIG. 11, the accommodating portion 128 faces the motor portion 144 and is separated from the connecting portion between the motor portion 144 and the gear head portion 145 in a state where the gear head portion 145 is in contact with the gear head supporting portion 127. It has a pair of partition portions 128a and 128b provided in the above. The pair of partition portions 128a and 128b are separated from each other to form an accommodation space 128c in which the holding member 180 is arranged. Therefore, the accommodating portion 128 can prevent the holding member 180 from adhering to the connecting portion between the motor portion 144 and the gear head portion 145 and invading the inside of the geared motor 141.
　各仕切り部１２８ａ、１２８ｂにおいてモータ部１４４に対向する面（上面）は、ギアヘッド部１４５がギアヘッド支持部１２７に当接した状態で、モータ部１４４の外周面との間に隙間Ｇ１を形成する。図１０および図１１に示すように、保持部材１８０は、隙間Ｇ１を埋める（充填する）ように配置されている。そのため、保持部材１８０は、ギアヘッド部１４５の軸心Ｓ２に対してモータ部１４４の軸心Ｓ１が倣った位置にモータ部１４４を好適に保持できる。ただし、保持部材は、隙間Ｇ１の全てを埋めるように配置されていなくてもよい。 The surface (upper surface) of the partition portions 128a and 128b facing the motor portion 144 forms a gap G1 with the outer peripheral surface of the motor portion 144 in a state where the gear head portion 145 is in contact with the gear head support portion 127. As shown in FIGS. 10 and 11, the holding member 180 is arranged so as to fill (fill) the gap G1. Therefore, the holding member 180 can suitably hold the motor portion 144 at a position where the axial center S1 of the motor portion 144 follows the axial center S2 of the gear head portion 145. However, the holding member may not be arranged so as to fill the entire gap G1.
　なお、ハウジング１２０のギアードモータ１４１の周辺の構造は上記に限定されない。例えば、ハウジング１２０は、枠部１２６や収容部１２８を有していなくてもよい。 The structure around the geared motor 141 of the housing 120 is not limited to the above. For example, the housing 120 may not have a frame portion 126 or a housing portion 128.
　次に、図１２Ａ～図１２Ｄを参照して、ギアードモータ１４１のハウジング１２０への取り付け方法について説明する。 Next, a method of attaching the geared motor 141 to the housing 120 will be described with reference to FIGS. 12A to 12D.
　まず、ギアードモータ１４１およびハウジング１２０が準備される。 First, the geared motor 141 and the housing 120 are prepared.
　次に、図１２Ａおよび図１２Ｂに示すように、シャーシ１２２の一対の仕切り部１２８ａ、１２８ｂの間の収容空間１２８ｃおよび各仕切り部１２８ａ、１２８ｂの上面に、未硬化状態の保持部材１８０が配置される。 Next, as shown in FIGS. 12A and 12B, the holding member 180 in the uncured state is arranged on the accommodation space 128c between the pair of partition portions 128a and 128b of the chassis 122 and the upper surface of each of the partition portions 128a and 128b. To.
　次に、図１２Ｃに示すように、シャーシ１２２の枠部１２６内にギアードモータ１４１が配置される。 Next, as shown in FIG. 12C, the geared motor 141 is arranged in the frame portion 126 of the chassis 122.
　次に、図１２Ｄに示すように、固定部材１７０をシャーシ１２２に固定する。この際、シャーシ１２２のギアヘッド支持部１２７は、ギアヘッド部１４５に当接している。また、未硬化状態の保持部材１８０は、ギアヘッド部１４５とモータ部１４４との相対的な位置関係を維持するように、モータ部１４４の位置に応じて変形する。そのため、モータ部１４４は、ギアヘッド部１４５の軸心Ｓ２に対してモータ部１４４の軸心Ｓ１が倣った位置に配置される。なお、変形に伴い、未硬化状態の保持部材１８０の一部は、枠部１２６とモータ部１４４との間のＧ２（図１０参照）から逃げてもよい。 Next, as shown in FIG. 12D, the fixing member 170 is fixed to the chassis 122. At this time, the gear head support portion 127 of the chassis 122 is in contact with the gear head portion 145. Further, the holding member 180 in the uncured state is deformed according to the position of the motor portion 144 so as to maintain the relative positional relationship between the gear head portion 145 and the motor portion 144. Therefore, the motor portion 144 is arranged at a position where the axial center S1 of the motor portion 144 follows the axial center S2 of the gear head portion 145. With the deformation, a part of the holding member 180 in the uncured state may escape from G2 (see FIG. 10) between the frame portion 126 and the motor portion 144.
　保持部材１８０は、ギアヘッド部１４５の軸心Ｓ２に対してモータ部１４４の軸心Ｓ１が倣った位置にモータ部１４４を保持した状態で、硬化状態に移行する。そのため、保持部材１８０は、モータ部１４４の軸心Ｓ１とギアヘッド部１４５の軸心Ｓ２とがアライメントされた状態を保持しつつ、モータ部１４４をシャーシ１２２に固定できる。 The holding member 180 shifts to a cured state while holding the motor portion 144 at a position where the axial center S1 of the motor portion 144 follows the axial center S2 of the gear head portion 145. Therefore, the holding member 180 can fix the motor portion 144 to the chassis 122 while maintaining a state in which the axial center S1 of the motor portion 144 and the axial center S2 of the gear head portion 145 are aligned.
　（投与器具）
　図１および図２に示すように、投与器具２００は、薬液投与装置１００に接続可能に構成している。 (Administrator)
As shown in FIGS. 1 and 2, the administration device 200 is configured to be connectable to the drug solution administration device 100.
　投与器具２００は、コネクタ２１０と、生体に穿刺される針管２２０と、穿刺部（カニューレハウジング）２３０と、チューブ２４０と、針管２２０の生体への穿刺を補助する穿刺補助具２５０と、を有している。 The administration device 200 includes a connector 210, a needle tube 220 to be punctured by a living body, a puncture portion (cannula housing) 230, a tube 240, and a puncture assisting tool 250 to assist the needle tube 220 to puncture the living body. ing.
　コネクタ２１０は、当該コネクタ２１０に固定された装着部２１５を介して薬液投与装置１００に接続可能に構成している。装着部２１５は、ハウジング１２０の外部に突出した薬液容器１１０の先端部１１２に設けられた装着部１１５（図４を参照）に対して外嵌されることにより、薬液投与装置１００と接続できる。 The connector 210 is configured to be connectable to the chemical solution administration device 100 via the mounting portion 215 fixed to the connector 210. The mounting portion 215 can be connected to the chemical liquid administration device 100 by being fitted externally to the mounting portion 115 (see FIG. 4) provided at the tip end 112 of the chemical liquid container 110 protruding to the outside of the housing 120.
　装着部２１５の内部には、薬液容器１１０の先端部に配置された封止部材（図示省略）を刺通可能な接続用の針部（図示省略）が配置されている。チューブ２４０は、接続用の針部を介して、薬液容器１１０の内腔１１１と連通される。 Inside the mounting portion 215, a connecting needle portion (not shown) capable of penetrating a sealing member (not shown) arranged at the tip of the chemical solution container 110 is arranged. The tube 240 communicates with the lumen 111 of the chemical container 110 via a connecting needle.
　穿刺部２３０の内部には、チューブ２４０と針管２２０の内腔を連通する流路（図示省略）が形成されている。チューブ２４０を介して穿刺部２３０へ送液された薬液は、穿刺部２３０の内部に形成された流路および針管２２０を通して生体内に投与される。 Inside the puncture portion 230, a flow path (not shown) that communicates the lumens of the tube 240 and the needle tube 220 is formed. The drug solution sent to the puncture portion 230 via the tube 240 is administered into the living body through the flow path and the needle tube 220 formed inside the puncture portion 230.
　使用者への薬液の送液に際して、穿刺部２３０には穿刺補助具２５０が取り付けられる。穿刺補助具２５０は、導入針（内針）２５１を保持している。導入針２５１は、穿刺補助具２５０を穿刺部２３０に取り付けた状態において、針管２２０の先端から突出する。使用者は、針管２２０に導入針２５１を挿通した状態で針管２２０を生体に穿刺することにより、針管２２０に折れ等が生じるのを防止しつつ、針管２２０を生体に刺入することが可能になる。 A puncture aid 250 is attached to the puncture portion 230 when the drug solution is sent to the user. The puncture aid 250 holds the introduction needle (inner needle) 251. The introduction needle 251 protrudes from the tip of the needle tube 220 in a state where the puncture aid 250 is attached to the puncture portion 230. By puncturing the needle tube 220 into the living body with the introduction needle 251 inserted through the needle tube 220, the user can puncture the needle tube 220 into the living body while preventing the needle tube 220 from breaking or the like. Become.
　穿刺補助具２５０は、針管２２０を生体に穿刺した後、穿刺部２３０から取り外される。導入針２５１は、穿刺部２３０から穿刺補助具２５０が取り外されると、針管２２０の内腔から抜去される。 The puncture aid 250 is removed from the puncture portion 230 after the needle tube 220 is punctured into the living body. The introduction needle 251 is removed from the lumen of the needle tube 220 when the puncture aid 250 is removed from the puncture portion 230.
　針管２２０を生体に穿刺した後、穿刺補助具２５０が取り外されて、針管２２０が生体内に留置された状態で、穿刺部２３０は使用者の体表面Ｈに残置される。この状態で薬液投与装置１００の押し子１３０が薬液容器１１０内を前進することにより、薬液容器１１０に充填された薬液は、チューブ２４０および穿刺部２３０の流路を経由して針管２２０の内腔へ送液される。 After puncturing the needle tube 220 into the living body, the puncture assisting tool 250 is removed, and the puncture portion 230 is left on the body surface H of the user in a state where the needle tube 220 is indwelled in the living body. In this state, the pusher 130 of the drug solution administration device 100 advances in the drug solution container 110, so that the drug solution filled in the drug solution container 110 passes through the flow path of the tube 240 and the puncture portion 230 and is passed through the cavity of the needle tube 220. The liquid is sent to.
　導入針２５１は、例えば、金属針で構成することが可能である。また、針管２２０は、例えば、樹脂製の管状部材（カニューレ）で構成することが可能である。 The introduction needle 251 can be composed of, for example, a metal needle. Further, the needle tube 220 can be made of, for example, a tubular member (cannula) made of resin.
　投与器具２００は、薬液投与装置１００と同様に、使用者の体表面Ｈに貼り付けて使用するパッチタイプとして構成している。投与器具２００の穿刺部２３０の接触面（底面）２３１には、体表面Ｈに貼着可能なシート状の貼着部（図示省略）を設けている。投与器具２００を使用者に取り付ける前の初期状態において、貼着部の貼着面には剥離可能な保護シートが取り付けられる。 The administration device 200 is configured as a patch type to be used by being attached to the body surface H of the user, similarly to the drug solution administration device 100. A sheet-shaped attachment portion (not shown) that can be attached to the body surface H is provided on the contact surface (bottom surface) 231 of the puncture portion 230 of the administration device 200. In the initial state before attaching the administration device 200 to the user, a peelable protective sheet is attached to the attachment surface of the attachment portion.
　以上説明したように、本実施形態に係る薬液投与装置１００は、薬液容器１１０と、押し子１３０と、ギアードモータ１４１と、ハウジング１２０と、固定部材１７０と、保持部材１８０と、を有する。薬液容器１１０は、薬液が充填されている。押し子１３０は、薬液容器１１０内の薬液を押し出す。ギアードモータ１４１は、モータ部１４４およびモータ部１４４に連結されるギアヘッド部１４５を含み、押し子１３０を駆動するための駆動力を発生する。ハウジング１２０は、ギアードモータ１４１を収容する。固定部材１７０は、ギアヘッド部１４５をハウジング１２０に固定する。保持部材１８０は、モータ部１４４とハウジング１２０との間の隙間に配置された状態で硬化しており、ギアヘッド部１４５の軸心Ｓ２に対してモータ部１４４の軸心Ｓ１が倣った位置にモータ部１４４を保持する。 As described above, the chemical solution administration device 100 according to the present embodiment includes a chemical solution container 110, a pusher 130, a geared motor 141, a housing 120, a fixing member 170, and a holding member 180. The chemical solution container 110 is filled with the chemical solution. The pusher 130 pushes out the chemical solution in the chemical solution container 110. The geared motor 141 includes a motor unit 144 and a gear head unit 145 connected to the motor unit 144, and generates a driving force for driving the pusher 130. The housing 120 houses the geared motor 141. The fixing member 170 fixes the gear head portion 145 to the housing 120. The holding member 180 is hardened in a state of being arranged in the gap between the motor portion 144 and the housing 120, and the motor is positioned at a position where the axial center S1 of the motor portion 144 follows the axial center S2 of the gear head portion 145. Holds the portion 144.
　上記薬液投与装置１００によれば、固定部材１７０および保持部材１８０がモータ部１４４およびギアヘッド部１４５をハウジング１２０に固定するため、落下等の衝撃等が加わった場合においてモータ部１４４とギアヘッド部１４５との分離を抑制できる。また、保持部材１８０は、未硬化状態において、ギアヘッド部１４５の軸心Ｓ２に対してモータ部１４４の軸心Ｓ１がアライメントされたギアヘッド部１４５とモータ部１４４との相対的な位置関係が維持されるように、モータ部１４４の位置に応じて変形する。そして、保持部材１８０は、ギアヘッド部１４５とモータ部１４４との相対的な位置関係を維持したまま硬化状態に移行する。その結果、保持部材１８０は、ギアヘッド部１４５の軸心Ｓ２に対してモータ部１４４の軸心Ｓ１が倣った位置にモータ部１４４を保持できる。したがって、保持部材１８０は、モータ部１４４からギアヘッド部１４５に伝わるトルクの低減を抑制できる。以上より、上記薬液投与装置１００は、落下等の衝撃等が加わった場合においてモータ部１４４とギアヘッド部１４５との分離を抑制しつつ、モータ部１４４からギアヘッド部１４５に伝わるトルクの低減を抑制できる。 According to the chemical solution administration device 100, the fixing member 170 and the holding member 180 fix the motor portion 144 and the gear head portion 145 to the housing 120. Therefore, when an impact such as a drop is applied, the motor portion 144 and the gear head portion 145 Separation can be suppressed. Further, in the uncured state, the holding member 180 maintains a relative positional relationship between the gear head portion 145 and the motor portion 144 in which the axial center S1 of the motor portion 144 is aligned with the axial center S2 of the gear head portion 145. As described above, the motor unit 144 is deformed according to the position of the motor unit 144. Then, the holding member 180 shifts to the cured state while maintaining the relative positional relationship between the gear head portion 145 and the motor portion 144. As a result, the holding member 180 can hold the motor portion 144 at a position where the axial center S1 of the motor portion 144 follows the axial center S2 of the gear head portion 145. Therefore, the holding member 180 can suppress the reduction of the torque transmitted from the motor portion 144 to the gear head portion 145. From the above, the chemical solution administration device 100 can suppress the reduction of the torque transmitted from the motor unit 144 to the gear head unit 145 while suppressing the separation of the motor unit 144 and the gear head unit 145 when an impact such as dropping is applied. ..
　また、保持部材１８０は、ハウジング１２０とモータ部１４４との間の隙間Ｇ１を埋めるように配置されている。そのため、保持部材１８０は、ギアヘッド部１４５の軸心Ｓ２に対してモータ部１４４の軸心Ｓ１が倣った位置にモータ部１４４を好適に保持できる。 Further, the holding member 180 is arranged so as to fill the gap G1 between the housing 120 and the motor portion 144. Therefore, the holding member 180 can suitably hold the motor portion 144 at a position where the axial center S1 of the motor portion 144 follows the axial center S2 of the gear head portion 145.
　また、ハウジング１２０は、モータ部１４４とギアヘッド部１４５との連結部から離間し、かつ、モータ部１４４に対向する位置に、保持部材１８０を収容する収容部１２８を備える。そのため、収容部１２８は、保持部材１８０がモータ部１４４とギアヘッド部１４５との連結部に付着してギアードモータ１４１の内部に侵入することを抑制できる。 Further, the housing 120 includes an accommodating portion 128 accommodating the holding member 180 at a position separated from the connecting portion between the motor portion 144 and the gear head portion 145 and facing the motor portion 144. Therefore, the accommodating portion 128 can prevent the holding member 180 from adhering to the connecting portion between the motor portion 144 and the gear head portion 145 and invading the inside of the geared motor 141.
　また、固定部材１７０は、ギアヘッド部１４５をハウジング１２０に押し付けた状態で、ハウジング１２０に固定されている。そのため、固定部材１７０は、ギアヘッド部１４５の位置ずれを効果的に抑制できる。 Further, the fixing member 170 is fixed to the housing 120 in a state where the gear head portion 145 is pressed against the housing 120. Therefore, the fixing member 170 can effectively suppress the misalignment of the gear head portion 145.
　また、ギアヘッド部１４５の外面には、突起１４５ｅが形成されており、固定部材１７０は、ギアヘッド部１４５と対向する面に、突起１４５ｅが配置される溝部１７１ａを有する。そのため、固定部材１７０は、ギア側ケース１４５ｃが回転することを抑制できる。 Further, a protrusion 145e is formed on the outer surface of the gear head portion 145, and the fixing member 170 has a groove portion 171a on which the protrusion 145e is arranged on a surface facing the gear head portion 145. Therefore, the fixing member 170 can suppress the rotation of the gear side case 145c.
　また、固定部材１７０は、バネ性を備える材料によって形成されている。そのため、固定部材１７０は、落下等の衝撃がギアヘッド部１４５に伝わることを抑制できる。 Further, the fixing member 170 is formed of a material having a spring property. Therefore, the fixing member 170 can suppress the impact such as dropping from being transmitted to the gear head portion 145.
　また、保持部材１８０は、ハウジング１２０とモータ部１４４との間の隙間において硬化した接着材である。そのため、保持部材１８０は、モータ部１４４およびハウジング１２０の両方に接着することで、モータ部１４４をハウジングに対して好適に保持できる。 Further, the holding member 180 is an adhesive material hardened in the gap between the housing 120 and the motor portion 144. Therefore, the holding member 180 can suitably hold the motor portion 144 with respect to the housing by adhering to both the motor portion 144 and the housing 120.
　以上、実施形態を通じて本発明に係る薬液投与装置を説明したが、本発明は説明した各構成のみに限定されるものでなく、特許請求の範囲の記載に基づいて適宜変更することが可能である。 Although the drug solution administration device according to the present invention has been described above through the embodiments, the present invention is not limited to each of the described configurations, and can be appropriately modified based on the description of the claims. ..
　例えば、保持部材がギアヘッド部を保持し、固定部材がモータ部を固定してもよい。この場合、例えば、モータ部の外面に突起を形成し、固定部材は、モータ部と対向する面に、突起が配置される溝部を有していてもよい。 For example, the holding member may hold the gear head portion, and the fixing member may fix the motor portion. In this case, for example, a protrusion may be formed on the outer surface of the motor portion, and the fixing member may have a groove portion on which the protrusion is arranged on the surface facing the motor portion.
　また、ギアヘッド部（またはモータ部）の外面に形成された突起を固定部材の溝部に配置することでギア側ケース（またはモータ側ケース）の回転を抑制するのではなく、例えば、ギアヘッド部（またはモータ部）の外面に形成された溝部に、ハウジングにおいてギアヘッド部（またはモータ部）に対向する面に形成された突起を配置することで、ギア側ケース（またはモータ側ケース）の回転を抑制してもよい。 Further, the rotation of the gear side case (or motor side case) is not suppressed by arranging the protrusion formed on the outer surface of the gear head portion (or motor portion) in the groove portion of the fixing member, for example, the gear head portion (or the motor portion). The rotation of the gear side case (or motor side case) is suppressed by arranging the protrusions formed on the surface of the housing facing the gear head part (or the motor part) in the groove formed on the outer surface of the motor part). You may.
　また、保持部材は、未硬化状態から硬化状態に移行し、モータ部またはギアヘッド部を保持できる硬化性組成物である限り特に限定されない。硬化性組成物としては、特に限定されないが、例えば、光重合開始剤及び重合性化合物を含む光硬化性組成物、熱重合開始剤及び重合性化合物を含む熱硬化性組成物、熱硬化性樹脂、ＵＶ硬化樹脂、２液混合型の硬化樹脂を含む硬化性組成物等が挙げられる。なお、保持部材自身が接着性を備えない場合、保持部材は、ハウジングとモータ部（またはギアヘッド部）との間の隙間だけでなく、モータ部（またはギアヘッド部）を周方向に覆うように配置され、モータ部（またはギアヘッド部）を保持してもよい。 Further, the holding member is not particularly limited as long as it is a curable composition capable of shifting from an uncured state to a cured state and holding a motor portion or a gear head portion. The curable composition is not particularly limited, and is, for example, a photocurable composition containing a photopolymerization initiator and a polymerizable compound, a thermosetting composition containing a thermal polymerization initiator and a polymerizable compound, and a thermosetting resin. , UV curable resin, curable composition containing a two-component mixed type curable resin, and the like. If the holding member itself does not have adhesiveness, the holding member is arranged so as to cover not only the gap between the housing and the motor portion (or the gear head portion) but also the motor portion (or the gear head portion) in the circumferential direction. The motor section (or gear head section) may be held.
　また、固定部材の形状は、特に限定されず、公知のモータブラケットを使用することができる。 Further, the shape of the fixing member is not particularly limited, and a known motor bracket can be used.
　本出願は、２０１９年３月２６日に出願された日本国特許出願第２０１９－０５８２２２号に基づいており、その開示内容は、参照により全体として引用されている。 This application is based on Japanese Patent Application No. 2019-058222 filed on March 26, 2019, and the disclosure contents are cited as a whole by reference.
１０　　　薬液投与システム、
１００　　薬液投与装置、
１１０　　薬液容器、
１２０　　ハウジング、
１２２　　シャーシ、
１２８　　収容部、
１３０　　押し子、
１４１　　ギアードモータ、
１４４　　モータ部、
１４５　　ギアヘッド部、
１４５ｅ　突起、
１７０　　固定部材、
１７１ａ　溝部、
１８０　　保持部材、
２００　　投与器具、
Ｇ１　　　隙間、
Ｓ１　　　モータ部の軸心、
Ｓ２　　　ギアヘッド部の軸心。 10 Chemical administration system,
100 drug solution administration device,
110 chemical container,
120 housing,
122 chassis,
128 containment,
130 pusher,
141 geared motor,
144 Motor section,
145 gear head part,
145e protrusion,
170 fixing member,
171a groove,
180 holding member,
200 administration device,
G1 gap,
S1 Motor unit axis,
Axial center of S2 gear head.

Claims (7)

  1. 　薬液が充填された薬液容器と、
    　前記薬液容器内の前記薬液を押し出す押し子と、
    　モータ部および前記モータ部に連結されるギアヘッド部を含み、前記押し子を駆動するための駆動力を発生するギアードモータと、
    　前記ギアードモータを収容するハウジングと、
    　前記モータ部および前記ギアヘッド部のうちの一方の部材を前記ハウジングに固定する固定部材と、
    　前記モータ部および前記ギアヘッド部のうちの他方の部材と前記ハウジングとの間の隙間に配置された状態で硬化しており、前記一方の部材の軸心に対して前記他方の部材の軸心が倣った位置に前記他方の部材を保持する保持部材と、を有する薬液投与装置。     A chemical container filled with chemicals and
    A pusher that pushes out the chemical solution in the chemical solution container,
    A geared motor that includes a motor unit and a gear head unit connected to the motor unit and generates a driving force for driving the pusher.
    A housing for accommodating the geared motor and
    A fixing member for fixing one of the motor portion and the gear head portion to the housing, and
    It is hardened in a state of being arranged in the gap between the other member of the motor portion and the gear head portion and the housing, and the axial center of the other member is relative to the axial center of the one member. A drug solution administration device having a holding member that holds the other member at a similar position.
  2. 　前記保持部材は、前記ハウジングと前記他方の部材との間の前記隙間を埋めるように配置されている、請求項１に記載の薬液投与装置。 The drug solution administration device according to claim 1, wherein the holding member is arranged so as to fill the gap between the housing and the other member.
  3. 　前記ハウジングは、前記モータ部と前記ギアヘッド部との連結部から離間し、かつ、前記他方の部材と対向する位置に、前記保持部材を収容する収容部を備える、請求項１または請求項２に記載の薬液投与装置。 The housing according to claim 1 or 2, further comprising a housing portion for accommodating the holding member at a position separated from the connecting portion between the motor portion and the gear head portion and facing the other member. The drug solution administration device described.
  4. 　前記固定部材は、前記一方の部材を前記ハウジングに押し付けた状態で、前記ハウジングに固定されている、請求項１～３のいずれか一項に記載の薬液投与装置。 The drug solution administration device according to any one of claims 1 to 3, wherein the fixing member is fixed to the housing in a state where one of the members is pressed against the housing.
  5. 　前記一方の部材の外面には突起が形成されており、
    　前記固定部材は、前記一方の部材と対向する面に、前記突起が配置される溝部を有する、請求項１～４のいずれか一項に記載の薬液投与装置。     A protrusion is formed on the outer surface of one of the members.
    The drug solution administration device according to any one of claims 1 to 4, wherein the fixing member has a groove on which the protrusion is arranged on a surface facing the one member.
  6. 　前記固定部材は、バネ性を備える材料によって形成されている、請求項１～５のいずれか一項に記載の薬液投与装置。 The drug solution administration device according to any one of claims 1 to 5, wherein the fixing member is made of a material having a spring property.
  7. 　前記保持部材は、前記隙間において硬化した接着材である、請求項１～６のいずれか一項に記載の薬液投与装置。 The chemical solution administration device according to any one of claims 1 to 6, wherein the holding member is an adhesive material cured in the gap.
PCT/JP2020/005577 2019-03-26 2020-02-13 Liquid medicine administration device WO2020195297A1 (en)

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JP2019058222A JP2022077534A (en) 2019-03-26 2019-03-26 Liquid medicine administration device
JP2019-058222 2019-03-26

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63157640A (en) * 1986-12-19 1988-06-30 Jidosha Denki Kogyo Co Ltd Motor positioning and fixing method
JP2003079091A (en) * 2001-08-31 2003-03-14 Namiki Precision Jewel Co Ltd Installation structure of geared motor
JP2015181835A (en) * 2014-03-25 2015-10-22 テルモ株式会社 Medical solution administration device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63157640A (en) * 1986-12-19 1988-06-30 Jidosha Denki Kogyo Co Ltd Motor positioning and fixing method
JP2003079091A (en) * 2001-08-31 2003-03-14 Namiki Precision Jewel Co Ltd Installation structure of geared motor
JP2015181835A (en) * 2014-03-25 2015-10-22 テルモ株式会社 Medical solution administration device

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