WO2013054988A1

WO2013054988A1 - Apparatus for injecting drug

Info

Publication number: WO2013054988A1
Application number: PCT/KR2012/001509
Authority: WO
Inventors: 박광범; 문현일
Original assignee: 주식회사 메가젠임플란트
Priority date: 2011-10-14
Filing date: 2012-02-28
Publication date: 2013-04-18
Also published as: WO2013055001A1; KR20130040281A; KR101293502B1; CN203935468U

Abstract

An apparatus for injecting a drug, according to one embodiment of the present invention, comprises: a main body to which an ample case storing the drug is coupled; a pressurizing portion, which is inserted into the ample case, for discharging the drug to the exterior of the ample case by moving in a line inside the main body; a power connection portion, to one end of which the main body is connected, and to the other end of which a power source for providing the power for driving the pressurizing portion is connected; a power transfer mechanism, which is accommodated inside the main body and is connected to the power connection portion, for transferring the power which is provided fromm the power source to the pressurizing portion; and a power switching mechanism for selectively connecting the power transfer portion to the pressurizing portion.

Description

Drug injection device

The present invention relates to a drug injection device for injecting a drug containing an anesthetic solution.

As the income index of the aging society and the public has recently increased, interest in health has increased considerably. Among them, the interest in dental treatment is quite high, and as the society becomes aging, the demand for dental treatment such as implant and prosthetic treatment is increasing. However, according to patients' satisfaction with dental treatment, Korean Dental Association, 2007 (3), many patients have fear of dental treatment, among them, fear of pain.

Most dental treatments require anesthesia, and after anesthesia, the tooth can be treated almost painlessly. For example, in the case of dental implants, local anesthesia is performed at the site to be treated. Such anesthesia is used to inject anesthesia into the surgical site using a syringe.

In general, when anesthesia solution is injected, the anesthesia injection rate is increased, and excessive pressure is generated in the affected part, and the patient feels pain. Therefore, when injecting anesthesia solution, it should be injected at an appropriate infusion rate, and if injected at a slow speed, the patient does not feel great pain. However, if the anesthesia fluid is injected at a slow rate and the procedure time is delayed, the operator must bear excessive time loss, and the patient must endure the longer procedure time.

On the other hand, as the dental industry develops and competition among dentists is increasing, a lot of dentists nowadays have the motto of painless dental treatment for patients with fear of dentistry, patients with fear of pain, and children. It is.

It was developed to meet the needs of these dentists, painless anesthesia, the prior art related to painless anesthesia is disclosed in Korean Patent Registration No. 10-0784931 (2007.12.05).

The painless anesthetic device according to an embodiment of the prior art is a gun type painless anesthetic with a built-in battery, an anesthetic body coupled with an ampoule for receiving anesthetic liquid, and the body is detachably coupled with a built-in battery. It is divided into a handpiece type painless anesthetic of the main body and a footswitch type painless anesthetic in which anesthetic fluid is injected by the foot switch.

In one embodiment of the prior art, the painless anesthesia of the gun type weighs a lot due to the built-in battery and other parts, and the center of gravity is not stable, and the anesthesia is injected at an appropriate speed due to the shaking of the anesthesia itself. There is a disadvantage that cannot be achieved.

And since the handpiece type painless anesthesia has a built-in battery in the anesthesia body separated from the gripping portion, the weight effect is significantly less than the painless anesthesia of the aforementioned gun type. However, additional costs are required in that a separate main body is provided for accommodating the battery, and the operation may be inconvenient due to interference of the main body even during anesthesia.

The foot switch type analgesic anesthesia is easy to inject the anesthesia solution because the foot switch is pressed with the foot for the injection of the anesthesia solution, but the foot switch and the like are heavy and may cause interference with peripheral devices.

In particular, the painless anesthesia according to one embodiment of the prior art adopts the principle of injecting anesthesia by the driving force of the drive shaft connected to the motor, which is inconvenient in the process of replacing the ampoule containing the anesthetic solution after the anesthesia is injected. There is a point. That is, in the process of replacing the ampoule, the reverse rotational force of the motor cannot be blocked from being transmitted to the drive shaft, and thus, there is a disadvantage in that the replacement of the ampoule has to wait until the reverse rotational force of the motor is consumed.

The technical problem to be achieved by the present invention is to provide a drug injection device that improves the disadvantage that the ampoules can not be replaced in a short time because the reverse rotational force of the motor, which is the biggest problem of conventional painless anesthesia, cannot be prevented from being transmitted to the drive shaft. It is.

Drug injection device according to an embodiment of the present invention for achieving the above object, the main body is coupled to the ampoule case is stored drug; A pressurizing part inserted into the ampoule case by linear movement in the main body to allow the drug to be discharged to the outside of the ampoule case; A power connection portion connected at one end thereof to a main power source connected to the other end thereof to provide a power source for driving the pressing unit; A power transmission mechanism accommodated in the main body and connected to the power connection unit to transmit power provided from the power source to the pressing unit; And a power switching mechanism for allowing the power transmission portion to be selectively connected to the pressing portion.

Drug injection device according to an embodiment of the present invention in another aspect, the body is made of at least one frame, the front end is formed with an insertion hole coupled to the rear end of the ampoule case; A pressing unit which presses a rear end of the ampoule case by linearly moving in the front-rear direction inside the main body; A power connection unit having one end connected to the main body and the other end connected to a power source providing power for driving the pressing unit; A power transmission unit accommodated in the main body and configured to transfer power provided from the power source to the pressing unit; And means formed in the stopper and the main body, respectively, for limiting the length of the pressing section.

According to the drug injection device according to an embodiment of the present invention, there is an effect that the disadvantage of the conventional painless anesthesia to replace the ampoule after waiting until the reverse rotational torque of the motor is consumed is improved. That is, the rotational force transmission of the motor is immediately interrupted by the operation of rotating the ampoule to separate the ampoule.

In addition, according to the drug injection device of the present invention, there is an advantage that the ampoule can be replaced in a short time.

1 is an external perspective view of a drug injection device according to an embodiment of the present invention.

2 is an exploded perspective view of a drug injection device according to an embodiment of the present invention.

Figure 3 is a partial perspective view showing the front end structure of the body constituting the drug injection device according to an embodiment of the present invention.

Figure 4 is an exploded perspective view showing the configuration of the power connection portion constituting the drug injection device according to an embodiment of the present invention.

5 is a perspective view illustrating a state in which a power source is connected to the power connection unit.

FIG. 6 is an enlarged perspective view showing a portion A configuration of FIG. 2; FIG.

7 is an enlarged perspective view illustrating an internal structure of a portion B of FIG. 2;

8 is a view showing a state before the ampoule case is coupled to the main body.

9 is a view showing a state in which the ampoule case is inserted into the main body, but in a release position where power is not transmitted.

10 and 11 are views showing a state in which the ampoule case is in a connection position capable of transmitting power by rotating in the state fitted to the main body.

12 is a perspective view showing a state of use of the drug injection device according to an embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings will be described an embodiment of the present invention.

Referring to FIG. 1, the drug injection device 10 according to an embodiment of the present invention includes a main body 100 in which an ampoule case 600 into which a drug is injected is detachably coupled to a front end portion, and the main body 100. It is provided to be movable in the front and rear direction from the inside, the pressurizing portion 200 for providing a pressing force for discharging the drug such as anesthesia to the outside of the main body 100, the power source for the movement of the pressing portion 200 is connected And a power transmission unit 400 for transmitting the power provided through the power connection unit 300 to the pressing unit 200.

In detail, the power transmission unit 400 performs a function of transmitting power provided from the power source to the pressing unit 200 and blocking a power transmitted to the pressing unit 200. In addition, one or more coupling protrusions 601 may protrude from the outer circumferential surface of the rear end of the ampoule case 600. As an example, it may be proposed that the pair of coupling protrusions 601 protrude on the surfaces facing each other.

In addition, the power connection unit 300 is a portion to which the external power source P is connected, so that the power provided from the power source P is provided to the pressing unit 200.

In addition, the main body 100 is made by combining the first frame 110 and the second frame 120, the first and

second frames

110, 120 are detachably coupled in a variety of ways, including screw coupling. Can be. In addition, components are embedded in an internal space formed by the combination of the first and

second frames

110 and 120. Therefore, after separating the first and

second frames

110 and 120, the component parts accommodated in the main body 100 may be conveniently replaced and repaired.

Referring to FIG. 2, the main body 100 constituting the drug injection device 10 according to the embodiment of the present invention includes a space 101 in which the power transmission unit 400 is accommodated, and the pressing unit 200. The movement passage 102 for the front-back direction movement of) is formed. In detail, the front end of the moving passage 102 is opened and the rear end is closed, so that the pressing unit 200 may be drawn out of the main body 100 through the front end of the moving passage 102.

In more detail, the stopper 210 protrudes from the rear end outer circumferential surface of the pressing unit 200, and the rack gear 220 is formed on the bottom surface thereof. In addition, a stopper guide groove 104 for guiding the movement of the stopper 210 is formed in the movement passage 102. The stopper guide groove 104 extends a predetermined length in the front and rear direction on the inner circumferential surface of the movement passage 102 to guide the movement of the stopper 210 and to set the withdrawal limit of the pressing part 200. Do this.

In addition, an insertion hole 106 for inserting the ampoule case 600 is formed at a front end of the main body 100, and an installation for inserting the coupling protrusion 601 at an edge of the insertion hole 106. Groove 103 is formed. The installation groove 103 is in communication with the locking groove 451a of the rotating body 450 to be described later. Rotating the ampoule case 600 while the coupling protrusion 601 is inserted into the installation groove 103 and the locking groove 451a causes the rotation member 450 to rotate. When the rotating body 450 rotates, the locking groove 451a is deviated by a predetermined angle in the circumferential direction from the installation groove 103, so that the ampoule case 600 is coupled to the main body 100 without being separated. Is maintained. This will be described in more detail below.

In addition, a switching link receiving groove 105 is formed in the main body 100, and a switching link 460 (described later) is accommodated in the switching link receiving groove 105.

In the main body 100, a power transmission unit 400 is installed in the space 101 so that power provided through the power connection unit 300 is transmitted to the pressing unit 200.

The power transmission unit 400 includes a driving gear 410 and a clutch 430 gear coupled to the driving gear 410. The rotating shaft of the drive gear 410 is connected to the rotating shaft 310 (see Fig. 4) constituting the power connecting portion 300. In addition, the clutch 430 is connected to the pinion 431 gear coupled to the driving gear 410, a rotation shaft 432 passing through the center of the pinion 431, and the rotation shaft 432 and the pinion. And a rotation shaft support part 433 formed in a shape surrounding the 431.

In detail, the rotation shaft support portion 433 may be formed in a "c" shape, and both ends thereof may be connected to the rotation shaft 432. In addition, an accommodation groove 433a is formed at a front surface of the rotation shaft support part 433 to which one end of a switching link (to be described later) is connected. The pinion 431 is selectively geared to the rack gear 220 of the pressing unit 200.

On the other hand, the power switching unit 440 for selectively transmitting power to the pressing unit 200, the rotating body 450 is rotatably mounted to the inner front end of the main body 100, and one end of the clutch ( It includes a switching link 460 is connected to the rotary shaft support portion 433 of the 430 and the other end is connected to the rotary body 450. In addition, a see-saw axis 461 is formed at a substantially center portion of the switching link 460, and the seesaw shaft 461 extends in a direction crossing the longitudinal direction of the switching link 460. .

In addition, a link holder 452 is formed at a lower end of the outer circumferential surface of the rotating body 450, and the other end of the switching link 460 is fitted to the link holder 452. Accordingly, as the rotary body 450 rotates, the other end of the switching link 460 rotates together, and the switching link 460 rotates about the seesaw shaft 461. As the other end of the switching link 460 rotates, the clutch 430 connected to one end of the switching link 460 also rotates by a predetermined angle about the seesaw shaft 461.

Here, a position where the pinion 431 constituting the clutch 430 is gear-coupled to the rack gear 220 of the pressing unit 200 is defined as a connection position, and the pinion 431 is the rack gear 220. The position separated from) may be defined as a release position. In addition, the clutch 430 rotates by the distance between the connection position and the release position by the rotation of the switching link 460. The movement of the clutch 430 according to the operation of the switching link 460 will be described in more detail below.

The pinion 431 of the clutch 430 may be engaged with the driving gear 410 even when the pinion 431 is at any one of a connection position and a release position. Can be coupled to. In the present embodiment, it is suggested that three driving gears 410 are provided, but it is not limited thereto.

3 is a partial perspective view showing the structure of the front end portion of the main body constituting the drug injection device according to the embodiment of the present invention.

Referring to FIG. 3, the amplifier case 600 is inserted into the insertion hole 106 formed at the front end portion of the main body 100, and the coupling protrusion 601 passes through the installation groove 103. It is inserted into the locking groove 451a of the whole 450.

When the ampoule case 600 is rotated in this state, the rotor 450 rotates in one body with the ampoule case 600, and the locking groove 451a and the installation groove 103 are rotated by a predetermined angle. It is placed in a position that is out of alignment. In this state, the ampoule case 600 is not separated from the main body 100.

Figure 4 is an exploded perspective view showing the configuration of the power connection portion constituting the drug injection device according to an embodiment of the present invention, Figure 5 is a perspective view showing a state in which the power source is connected to the power connection portion.

4 and 5, the power connection unit 300 according to the embodiment of the present invention is connected to one side of the main body 100.

In detail, the power connection unit 300, the rotary shaft 310 is connected to the center of the drive gear 410, the connecting body 320 surrounding the rotary shaft 310 to support, and one end of the connecting body 320 It is fitted to the outer circumferential surface of the) and the other end includes a connector 330 connected to the power source (P). One end of the connector 330 is inserted into the outer circumferential surface of the connecting body 320 and then coupled to the connecting body 320 with one body by a fastening member. The other end of the connector 330 is connected to the power source P including a motor. The rotation shaft 310 is connected to the power source P. When power is applied to the power source P, the rotation shaft 310 rotates, and the driving gear 410 is rotated by the rotation shaft 310. ) Will rotate. Here, the power source P may be coupled to the connector 330 in a manner of being fitted, and the power source P may be separated by pulling the connector 330. In addition, the connector 330 may be designed in the same manner as the international standard of the contra-angle hand piece.

Meanwhile, the power source P may be a low speed angle motor of a unit chair (not shown) which is widely used in dentistry. In addition, the power transmission shaft P1 of the power source P and the rotation shaft 310 may be connected by the coupling C.

FIG. 6 is an enlarged perspective view illustrating a portion A configuration of FIG. 2.

Referring to FIG. 6, part A of FIG. 2 shows the power transmission unit 400, and the driving gear 410 is coupled to the rotation shaft 310 of the power connection unit 300, and the driving gear 410 is shown. The pinion 431 of the clutch 430 is gear coupled. The rotation shaft support part 433 is connected to the rotation shaft of the pinion 431. In detail, the rotation shaft support portion 433 is bent in a "c" shape to surround the pinion 431, and the rotation shaft support portion 432 penetrates both ends of the rotation shaft support portion 433. Connected with In addition, one end of the switching link 460 is connected to the front surface of the rotation shaft support 433.

7 is an enlarged perspective view illustrating an internal structure of a portion B of FIG. 2.

Referring to FIG. 7, as described above, the power switching unit 440 includes the rotating body 450 and the switching link 460 connected to the rotating body 450.

In detail, a structure including the power switching unit 440 and the clutch 430 may be defined as a power switching mechanism, and the pinion 431 and the pinion 431 of the drive gear 410 and the clutch 430 may be defined. ) May be defined as a power transmission mechanism of the rack gear 220 of the pressing unit 200 to be selectively engaged. That is, the clutch 430 may be not only one component of the power transmission mechanism, but also one component of the power switching mechanism.

8 is a view showing a state before the ampoule case is coupled to the main body, Figure 9 is a view showing a state in which the ampoule case is inserted into the main body in a release position where power is not transmitted, Figures 10 and 11 are ampoule cases Is a view showing a state in which the connection is possible to transmit power by rotating in the fitted state.

8 to 11, the switching link 460 and the pressing part 200 are in parallel with each other before the ampoule case 600 is coupled to the main body 100.

When the ampoule case 600 is inserted into the rotating body 450, the coupling protrusion 601 is inserted into the locking groove 451a. In this state, as shown in FIG. 10, when the ampoule case 600 is rotated in the arrow direction (counterclockwise direction), the link holder 452 also rotates in the counterclockwise direction. At the same time, the switching link 460 connected to the link holder 452 is rotated about the seesaw shaft 461.

In detail, when the other end of the switching link 460, ie, the front end, moves rearward in the drawing, one end of the switching link 460, that is, the rear end where the clutch 430 is coupled, moves forward in the drawing. In addition, the pinion 431 is engaged with the rack gear 220 while the clutch 430 moves. In this state, when power is applied to the power source P, the driving gear 410 rotates, and the rotational force of the driving gear 410 is transmitted to the pressing unit 200. As a result, the pressing unit 200 is drawn out from the front end of the main body 100 to push the rear end of the ampoule case 600 to discharge the drug stored in the ampoule case 600 to the outside.

When drug injection is completed, the ampoule case 600 is rotated in the opposite direction, and the pinion 431 is separated from the rack gear 220 by the rotation of the ampoule case 600. As a result, the forward movement of the pressing unit 200 is stopped.

On the other hand, in the present embodiment, it may further include a bush 500 surrounding the outer circumferential surface of the pressing unit 200. In detail, the pressing unit 200 may be supported so as not to shake when the pressing unit 200 moves in the front-back direction by the structure penetrating the bush 500.

Referring to FIG. 12, a hose may be connected to a front end of the ampoule case 600, and a syringe-shaped module having a needle may be mounted at an end of the hose. The operator can then inject the anesthesia into the affected area by holding the module and inserting the needle near the affected area.

In detail, the ampoule case 600 is inserted into the main body 100 and rotated so that power can be transmitted to the pressing unit 200, and then inserted into the affected part of the patient using the module. In this state, when power is applied to generate power from the power source P, the anesthetic liquid stored in the ampoule case 600 is injected into the affected part.

Claims

A main body to which the ampoule case storing the drug is coupled;

A pressurizing part inserted into the ampoule case by linear movement in the main body to allow the drug to be discharged to the outside of the ampoule case;

A power connection portion connected at one end thereof to a main power source connected to the other end thereof to provide a power source for driving the pressing unit;

A power transmission mechanism accommodated in the main body and connected to the power connection unit to transmit power provided from the power source to the pressing unit; And

And a power switching mechanism for selectively coupling said power transmission mechanism to said pressing portion.
The method of claim 1,

The power connection portion drug injection device comprising a rotating shaft connected to the power source.
The method of claim 2,

The power connection portion,

A connecting body surrounding and supporting the rotating shaft;

A coupling member connecting the rotation shaft and the power transmission shaft of the power source;

And any one or all of the connectors in which the coupling member is received and to which the power source is selectively connected.
The method of claim 2,

The power transmission mechanism,

Rack gears formed on the outer peripheral surface of the pressing portion,

One or more drive gears coupled to the rotational shaft,

And a clutch having a pinion for selectively coupling the drive gear and the rack gear.
The method of claim 4, wherein

The power switching mechanism is

A switching link, one end of which is connected to the clutch;

A drug injection device rotatably mounted to the inner front end of the main body, the rotating body is connected to the other end of the switching link.
The method of claim 5,

The front end of the pressing portion passes through the rotating body,

The rotating body rotates in one body with the ampoule case, the drug injection device.
The method of claim 6,

On one side of the inner circumferential surface of the rotating body, the drug injection device, characterized in that the engaging groove which is fitted into the engaging projection projecting to the outer peripheral surface of the rear end of the ampoule case is formed.
The method of claim 5,

At some point of the switching link is formed a seesaw axis,

And the switching link rotates about the seesaw axis as the rotating body rotates.
The method of claim 8,

The pinion is selectively connected to the rack gear by the rotation of the switching link.
The method of claim 8,

Drug injection device, characterized in that one end and the other end of the switching link is moved in the opposite direction about the seesaw axis.
A main body formed of at least one frame and having an insertion hole coupled to a rear end of the ampoule case at a front end thereof;

A pressing unit which presses a rear end of the ampoule case by linearly moving in the front-rear direction inside the main body;

A power connection unit having one end connected to the main body and the other end connected to a power source providing power for driving the pressing unit;

A power transmission unit accommodated in the main body and configured to transfer power provided from the power source to the pressing unit; And

And a means formed in the pressing portion and the main body, respectively, for limiting the length of drawout of the pressing portion.
The method of claim 11,

Means for limiting the withdrawal length of the pressing portion,

A stopper protruding from the outer circumferential surface of the pressing unit;

And a guide groove formed in the main body to accommodate the stopper and extend a predetermined length in the longitudinal direction of the pressing portion.
The method of claim 11,

The main body,

The first frame,

Drug injection device comprising a second frame coupled to the first frame.
The method of claim 11,

Drug injection device, characterized in that the rack gear is formed on the outer peripheral surface of the pressing portion.
The method of claim 14,

The power transmission unit,

A drive gear connected to the rotation shaft of the power connection unit;

And a clutch moving between a connection position in which the drive gear and the rack gear are operably connected, and a release position in which the drive gear and the rack gear are disconnected.
The method of claim 15,

The clutch is,

A pinion which is always connected to the drive gear and connected to the rack gear only at a connection position;

Drug injection device comprising a rotation shaft connection portion connected to the rotation axis of the pinion.
The method of claim 16,

And a power switching means for allowing the pinion to be connected to or disconnected from the rack gear,

The power switching means,

A rotating body mounted to the front end of the main body and rotating in a state where the ampoule case is fitted;

And a switching link having one end connected to the rotary shaft connection part and the other end connected to the rotary body.
The method of claim 17,

The center of rotation of the switching link is provided with a rotating shaft,

The switching link, the drug injection device, characterized in that for rotating around the axis of rotation as the rotating body rotates.
The method of claim 11,

The drug injection device is provided in a form surrounding the outer peripheral surface of the pressing portion, further comprising a bush for guiding the front and rear movement of the pressing portion.
The method of claim 11,

The power source is

Drug injection device comprising a low-speed angle motor provided in the dental unit chair.