KR20180098063A - A Method for Controlling a Non-inversive Injection of Medical Solution and a Non-Inversive Type of an Apparatus for Injecting Medical Solution - Google Patents

Abstract

The present invention relates to a non-invasive control method for injection of a drug solution and a non-invasive injection device for a drug solution, and more specifically, to a non-invasive control method for injection of a drug solution, which controls the injection of a drug solution based on changes in weight of the drug solution; and to a non-invasive injection device for a drug solution. The non-invasive control method for injection of a drug solution and the non-invasive injection device for a drug solution comprise: a drug solution storage unit (11) which stores a drug solution to be injected; a drug solution supply unit (12) which supplies the drug solution transferred from the drug solution storage unit (11) to a drug solution transfer unit (13); a weight detection unit (14) which detects changes in weight of the drug solution storage unit (11) or the drug solution supply unit (12); and an injection control unit (15) which determines as to whether to supply the drug solution on the basis of changes in weight detected by the weight detection unit (14), wherein the weight detection is performed periodically, and a supply amount and a supply rate of the drug solution are calculated thereby.

Description

[0001] The present invention relates to a non-invasive drug solution injection control method and a non-invasive drug solution injection device,

The present invention relates to a non-invasive liquid injection control method and non-invasive liquid injector, and more particularly to a non-invasive liquid injection control method and a non-invasive liquid injection control method for controlling liquid injection based on a change in weight of a liquid to be injected ≪ / RTI >

Syringes, syringes or similar injection devices may be used for the infusion of a drug or a chemical into the human body. It is advantageous that the chemical liquid injected into the human body is supplied in a predetermined amount and supplied in a short time. For example, a method of measuring the flow rate of the chemical liquid may be applied to measure the amount of the chemical liquid or chemical liquid injected into the human body. In order to measure the flow rate of the chemical liquid, a device for measuring the flow rate or the flow rate must be installed in the transport path of the chemical liquid, thereby causing contamination of the chemical liquid. In contrast, when the chemical solution is injected in a non-invasive manner, the injection path is not exposed to the outside, but it has a disadvantage that it is difficult to precisely control the chemical solution injection. Therefore, there is a need to develop a chemical liquid injection method or apparatus that can be precisely controlled while the amount of injection is measured in a non-invasive manner.

Patent Registration No. 10-1698353 discloses a detachable chemical liquid container capable of injecting a chemical liquid by selectively applying a chemical liquid container whose opening and closing is controlled and a chemical liquid injector having the same. In addition, Japanese Patent Laid-Open No. 10-2016-0097417 discloses a chemical liquid injector which is capable of safely injecting an accurate amount of liquid medicine, which can be easily carried and handled, and can control the chemical liquid injection rate with a slide switch.

Although the prior art discloses a sliding type dosing regulating means, this control scheme has a problem that it is difficult to accurately measure the amount injected. Therefore, there is a demand for development of a method or an apparatus that can accurately and precisely measure the amount of chemical liquid to be injected.

The present invention has been made to solve the problems of the prior art and has the following purpose.

Prior Art 1: Patent Registration No. 10-1698353 (Korea Institute of Industrial Technology, January 23, 2017) Removable drug container and drug injector with the same Prior Art 2: Patent Publication No. 10-2016-0097417 (published by Emucure Co., Ltd., Aug. 18, 2016) Portable automatic drug injector with slide switch

It is an object of the present invention to provide a non-invasive chemical liquid injection control method and an apparatus for injecting a non-invasive chemical liquid, which control the amount of chemical liquid to be injected by weight.

According to a preferred embodiment of the present invention, a non-invasive drug solution injection control method and a non-invasive drug solution injector are provided with a drug solution storage unit in which a drug solution to be injected is stored; A chemical liquid supply unit for supplying the chemical liquid transferred from the chemical liquid storage unit to the chemical liquid transfer unit; A weight detection unit for detecting a change in weight of the chemical solution storage unit or the chemical solution supply unit; And an injection control unit for determining whether or not the chemical liquid is supplied according to the weight change detected by the weight detection unit, wherein the weight detection is periodically performed, thereby calculating the supply amount and the supply rate of the chemical liquid.

According to another preferred embodiment of the present invention, the apparatus further includes a drive unit and an eccentric cam disposed in the conveyance path to control the feed rate of the chemical liquid.

According to another preferred embodiment of the present invention, in the method of injecting a chemical liquid,

The amount of the chemical liquid to be injected is determined; The initial weight of the chemical liquid is determined; Setting a supply interruption position of the chemical liquid in the supply path; The feed speed of the chemical liquid is controlled while the chemical liquid is supplied; The weight of the supplied chemical liquid is periodically measured; And controlling the chemical liquid supply according to a change in the weight of the chemical liquid measured periodically.

The method of injecting a chemical solution according to the present invention prevents contamination of a chemical solution by a measuring instrument by controlling the amount of a chemical solution to be injected by weight. Also, the handling of the chemical injector is simplified by preventing the measuring instrument from being separately sterilized or cleaned. Further, the chemical liquid injector according to the present invention facilitates the control of the injection rate and the opening / closing of the chemical liquid by controlling the injection speed and opening / closing of the chemical liquid by the motor driving method.

1 is a block diagram showing an embodiment of the structure of a chemical liquid injecting apparatus according to the present invention.
2 shows an embodiment of a chemical liquid injecting apparatus according to the present invention.
3 shows an embodiment of the operation structure of the chemical liquid injecting apparatus according to the present invention.
FIG. 4 shows an embodiment of a process of controlling the injection of the chemical solution by the chemical solution injection method according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the embodiments shown in the accompanying drawings, but the present invention is not limited thereto. In the following description, components having the same reference numerals in different drawings have similar functions, so that they will not be described repeatedly unless necessary for an understanding of the invention, and the known components will be briefly described or omitted. However, It should not be understood as being excluded from the embodiment of Fig.

1 is a block diagram showing an embodiment of the structure of a chemical liquid injecting apparatus according to the present invention.

1, the chemical liquid injector includes a chemical liquid storage unit 11 in which a chemical liquid to be injected is stored; A chemical liquid supply unit (12) for supplying the chemical liquid transferred from the chemical liquid storage unit (11) to the chemical liquid transfer unit (13); A weight detection unit (14) for detecting a change in weight of the chemical solution storage unit (11) or the chemical solution supply unit (12); And an injection control unit (15) for determining whether or not the chemical liquid is supplied in accordance with the weight change detected by the weight detection unit (14), and the weight detection is performed periodically, thereby calculating the supply amount and the supply speed of the chemical liquid.

In the present specification, the non-invasive means that the measurement unit or the transfer unit, which detects the transfer speed of the chemical liquid, the injection amount or the similar injection state of the chemical liquid, is disposed so as not to be in contact with the chemical liquid. The detection unit or the transfer control unit for measurement may be made separately from the apparatus for transferring the chemical liquid and installed outside the transfer path. Whereby the contamination of the chemical liquid by the detection unit or the transfer control unit can be prevented, and the detection unit or the transfer control unit can be independently cleaned or sterilized.

The chemical liquid storage unit 11 has a function of storing a chemical liquid or a chemical liquid to be injected and can be a container for storing any chemical liquid known in the art having a container, a cartridge, a pouch or the like. From the chemical solution storage container 11, the chemical solution can be transferred to the chemical solution supply unit 12 and transferred to the chemical solution supply unit 12 by, for example, a supply pump, pressure, or gravity. Depending on the structure of the chemical liquid supply device, the chemical liquid storage unit 11 and the chemical liquid supply unit 12 may be integrally formed, or one unit may have both functions. The chemical liquid can be transferred to the chemical liquid supply unit 12 to be injected into the human body. For example, the chemical liquid transfer unit 13 may be, but not limited to, a needle, a ringer needle, an injection pad, a catheter, or the like. The chemical liquid may be transferred to a predetermined position through a path determined by a supply tube, a transfer conduit or similar liquid transfer means.

The weight detection unit 14 can measure the change of the weight of the chemical solution or the weight of the chemical solution stored in the chemical solution storage unit 11 or the chemical solution supply unit 12 and thereby determine the amount of the chemical solution to be injected or the injection rate of the chemical solution Can be measured. And the injection control unit 15 can be operated based on the measured weight change. The injection control unit 15 may be, for example, an opening / closing means, and the transfer of the chemical liquid by the injection control unit 15 may be stopped or started. Or injection of the chemical into the human body can be stopped or started by the injection control unit 15. The weight detection unit 14 may be, for example, a load cell or similar device, and may include a computing unit such as a microprocessor. The measurement period of the weight can be determined by the calculation unit, and the injection rate or the injection amount can be calculated based on the measured weight change. Then, the operation of the conveyance control unit 16 can be controlled based on the calculated weight change. For example, the transfer control unit 16 may include a transfer pump, and the pressure of the transfer pump may be controlled by the transfer control unit 16. [

The injection control unit 15 may include opening and closing means having various structures, and the feed control unit 16 may include means for adjusting various feed rates.

2 shows an embodiment of a chemical liquid injecting apparatus according to the present invention.

2, the chemical solution stored in the chemical solution storage unit 11 can be transferred to the quantitative supply unit 21 by the supply means 111 such as a pump. The fixed amount supply unit 21 can form a part of the chemical liquid storage unit 11 and can have a function of storing a certain amount of chemical liquid. The fixed amount supply unit 21 may include a fixed amount supply pump 211 such as a diaphragm. It can be conveyed from the chemical liquid storage unit 11 to the constant amount supply unit 21 through the constant amount supply liquid ST of the chemical liquid by the supply means 111. [ The fixed amount supply tube ST can be made to connect the upper side of the fixed amount supply unit 21 from the lower side of the chemical solution storage unit 11. [ Thus, when the chemical liquid is forcibly supplied by the supply means 111, the chemical liquid can be transferred to the chemical liquid storage unit 11 to the constant amount supply unit 21. The chemical liquid can be transferred to the chemical liquid transfer unit 13 through the transfer tube 22 by the constant amount supply pump 211 disposed inside the fixed amount supply unit 21. [ The metering feed pump 211 may be a pressure proportional feeding means for generating a constant pressure, for example, the diaphragm may be moved from below to upward depending on the pressure change. The diaphragm may have a structure for keeping the outlet for discharging the chemical liquid in the open state when the diaphragm is moved from the lower side to the upper side and the inlet through which the chemical liquid flows is closed.

The weight detection unit 14 may be disposed in the chemical solution storage unit 11 and the sub weight detection unit 14a may be disposed in the fixed amount supply unit 21. [ The weight detected by the sub weight detecting unit 14a can be transmitted to the weight detecting unit 14 and the sub weight detecting unit 14a periodically measures the weight of the constant amount feeding unit 21 to detect the weight detecting unit 14). The weight detection unit 14 can supply the chemical solution from the chemical solution storage unit 11 to the fixed amount supply unit 21 based on the detection information transmitted from the sub weight detection unit 14a.

The chemical liquid to the chemical liquid transfer unit 13 by the fixed amount supply unit 21 can be transferred by the transfer control unit. The transfer control unit may include drive units (M1, M2) and 1, 2 eccentric cams (251, 252) arranged in the transfer path to control the supply speed of the chemical liquid.

The first and second eccentric cams 251 and 252 may be disposed so as to be rotatable on the first and second rotational shafts 25a and 25b and the first and second rotational shafts may include first and second drive units M1 and M2, And the first and second drive units M1 and M2 may be the same as the cylinder unit, but may be preferably a motor. The eccentric cams 251 and 252 rotatably coupled to the first and second rotary shafts 25a and 25b connected to the drive shafts of the respective drive units M1 and M2 can be made to have different diameters have. As a result, the pressure applied to the transfer tube 22 is changed while rotating. The first and second eccentric cams 251 and 252 may be disposed on the respective rotation shafts 25a and 25b so that a plurality of first eccentric cams 251 and a plurality of second eccentric cams 252 are staggered . By the arrangement structure of the 1 and 2 eccentric cams 251 and 252, the chemical liquid can be moved along the conveying tube 22 at a controlled speed. Specifically, the first and second drive units M1 and M2 can be rotated at the same speed, and the speed of movement of the chemical liquid can be adjusted in accordance with the change in the rotational speed. Thus, the transport speed of the chemical liquid moved along the transport tube 22 can be adjusted by adjusting the transport speed of the first and second drive units M1 and M2. The transfer tube 22 can be made of a material having elasticity, and the transfer speed of the chemical liquid can be adjusted in various ways. For example, by controlling the pressure of the diaphragm, the transport speed of the chemical liquid can be adjusted. The delivery speed of the chemical liquid can be controlled by various non-invasive means, and the present invention is not limited to the embodiments shown.

The injection to the human body by the chemical liquid transfer unit 13 can be controlled in accordance with the weight change detected by the weight detection unit 14 or the sub-weight detection unit 14a. The injection control means opening and closing the transfer tube.

2, the insertion protrusion 271 and the receiving groove 272 can be disposed in the internal path at a predetermined position of the transfer tube 22, and a pressing member (not shown) can be disposed on the outer circumferential surface of the transfer tube 22 PM may be disposed. The pressing member PM may have a function of applying pressure to one portion of the transfer tube 22 by a drive unit M3 such as a motor. The fixing jig FJ of the portion of the transfer tube 22 in which the injection control unit is disposed can be made to prevent the movement of the other portion by the pressing of one portion. 3 drive unit M3, the pressing member PM can be moved up and down, so that the transfer tube 22 can be opened or closed. The insertion protrusion 271 or the receiving groove 272 can be formed in a proper shape according to the structure of the transfer tube 22. [ As described above, the open / close operation of the motor is controlled by the third drive unit M3 such that the opening / closing operation can be precisely controlled, and at the same time, the open / close timing can be automatically adjusted. In addition, the injection control is performed in a non-invasive manner.

The injection control can be performed in various ways and the present invention is not limited to the embodiments shown.

3 shows an embodiment of the operation structure of the chemical liquid injecting apparatus according to the present invention.

3, the entire operation of the chemical liquid injection device can be controlled by the control module 31, and the control module 31 can be combined with the weight detection unit 14 as described above. The amount of drug solution to be administered by the injection amount setting unit 321 and the injection speed setting unit 322 and the administration time can be determined. The control module 31 can supply the chemical solution by operating the supply operation unit 33 based on the information determined by the injection amount setting unit 321 and the injection speed setting unit 322. [ And the supply speed of the chemical liquid can be adjusted by the operation of the transfer control unit 16. [ The amount of the chemical liquid scheduled to be injected by the weight detection unit 14 can be detected during the supply of the chemical liquid. Detection of weight can be made periodically, whereby a change in weight can be detected. The detected weight or weight change may be transmitted to the supply calculation unit 35. [ The supply calculation unit 35 can calculate the amount of supply and the amount of time required for supplying the remaining amount in accordance with the change in weight. Information about the supply amount, the time taken for the predetermined supply and the current supply speed may be transmitted to the control module 31. [ The control module 31 can adjust the operation of the transfer control unit 16 based on the information transmitted from the supply calculation unit 35. [ Further, the control module 31 can control the operation of the injection control unit 15. [ The time at which the movable tube is closed by the injection control unit 15 can be determined and information can be transmitted to the opening and closing operation unit 37. [ The opening and closing operation unit 37 can control the operation of the supply operation unit 33 according to the information transmitted from the injection control unit 15 so that the moving tube is opened or closed at a predetermined time. As described above, the feed speed of the chemical liquid can be adjusted by the drive unit such as a motor in the feed control unit 16, and the open / close operation unit 37 can be provided with the opening and closing means operated by the motor.

The chemical liquid injecting apparatus according to the present invention may have various operating means, and the present invention is not limited to the illustrated embodiments.

FIG. 4 shows an embodiment of a process of controlling the injection of the chemical solution by the chemical solution injection method according to the present invention.

Referring to FIG. 4, the non-invasive chemical liquid injection control method includes a step P41 of determining the amount of chemical liquid to be injected; A step (P42) in which the initial weight of the chemical liquid is determined; A step (P43) of setting a supply stop position of the chemical liquid in the supply path; A step (P44, P45) in which the transport speed of the chemical liquid is controlled while the chemical liquid is supplied; A step (P46) in which the weight of the supplied chemical liquid is periodically measured; And controlling the chemical liquid injection in accordance with a change in the weight of the chemical liquid measured periodically.

As described above, the injection amount or the injection speed of the chemical solution according to the present invention can be measured non-invasively, and the opening / closing of the chemical solution transfer path can be performed non-invasively. Further, adjustment of the injection speed of the chemical liquid or opening / closing of the conveyance path can be performed precisely and quickly by the driving means such as a motor. However, various methods such as a peristaltic pump, a rotary interlocking method, and a diaphragm method may be used as the injection speed in the application of the method according to the present invention.

If the amount of the chemical solution to be injected is determined (P41), the initial weight can be measured and stored by the weight detection unit (P42). Then, the supply cutoff position can be determined (P43). The determination of the supply interruption position affects the chemical liquid that may remain in the transfer path, so that it can be disposed adjacent to, for example, the chemical liquid storage unit. When the initial weight is measured (P42), the supply of the chemical liquid can be started by the pump unit described above or the unit described in Fig. 2 (P44). (P45), and the transfer control means to control the supply speed of the chemical liquid. The transfer control of the chemical liquid can be predetermined and can be adjusted according to the detection of the weight change. For this transfer control, the weight can be detected periodically (P46). Then, it can be judged whether it corresponds to the range of the target speed or has reached the injection amount (P47). If the target speed is not reached or the injection volume has not been reached (NO), the transfer control process may be maintained (P45). On the other hand, if the injection amount has been reached (YES), injection control can be performed (P48). The injection control can be performed according to the opening / closing method of the moving path described above.

The chemical liquid injection control method according to the present invention can be performed according to various processes, and the present invention is not limited to the embodiments shown.

The method of injecting a chemical solution according to the present invention prevents contamination of a chemical solution by a measuring instrument by controlling the amount of a chemical solution to be injected by weight. Also, the handling of the chemical injector is simplified by preventing the measuring instrument from being separately sterilized or cleaned. Further, the chemical liquid injector according to the present invention facilitates the control of the injection rate and the opening / closing of the chemical liquid by controlling the injection speed and opening / closing of the chemical liquid by the motor driving method.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention . The invention is not limited by these variations and modifications, but is limited only by the claims appended hereto.

11: chemical liquid storage unit 12: chemical liquid supply unit
13: Chemical liquid delivery unit 14: Weight detection unit
14a: sub-weight detection unit 15: injection control unit
16: Feed control unit 21: Quantitative feed unit
22: transfer tube 25a, 25b: 1, 2 rotating shaft
31: control module 33: supply operation unit
35: supply calculation unit 37: open / close operation unit
111: Feeding means 211: Quantitative feed pump
251, 252: 1, 2 eccentric cam 271:
272: receiving groove 321: injection amount setting unit
322: Injection speed setting unit FJ: Fixing jig
M1, M2, M3: 1, 2, 3 drive unit PM:
ST: Quantity supply tube

Claims (3)

A chemical liquid storage unit (11) for storing a chemical liquid to be injected;
A chemical liquid supply unit (12) for supplying the chemical liquid transferred from the chemical liquid storage unit (11) to the chemical liquid transfer unit (13);
A weight detection unit (14) for detecting a change in weight of the chemical solution storage unit (11) or the chemical solution supply unit (12); And
And an injection control unit (15) for determining whether the chemical liquid is supplied according to the weight change detected by the weight detection unit (14)
Wherein the weight detection is periodically performed so that the supply amount and the supply speed of the chemical liquid are calculated. The chemical liquid injecting apparatus according to claim 1, further comprising drive units (M1, M2) and eccentric cams (251, 252) disposed in the conveyance path to control the chemical liquid feed rate. In the method of injecting a chemical liquid,
The amount of the chemical liquid to be injected is determined;
The initial weight of the chemical liquid is determined;
Setting a supply interruption position of the chemical liquid in the supply path;
The feed speed of the chemical liquid is controlled while the chemical liquid is supplied;
The weight of the supplied chemical liquid is periodically measured; And
Wherein the chemical liquid supply is controlled in accordance with a change in the weight of the chemical liquid measured periodically.

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