TWI717419B - Drug injection device for skin treatment - Google Patents

Abstract

The present disclosure relates to a drug injection device, including a drug transporter configured to receive air pressure provided from an air compressor and eject drug to outside, and a drug feeder placed on the drug transporter to transport drug to the drug transporter, wherein the drug transporter includes a housing which forms an external shape, a piston placed within the housing and configured to be moveable in frontward/rearward direction that is an ejection direction of drug by air pressure, and a cylinder integrally joined to a rear of the piston and placed in contact with an inner surface of the housing, and the piston includes a first member around which an elastic having a predetermined elastic force is wrapped and a second member having a fitting groove into which a portion of the first member is inserted, to detachably join the second member to the first member.

Description

Medicine injection device for skin treatment

The present disclosure relates to a medicine injection device for supplying essential medicines to the body, and more specifically, to a medicine injection device that delivers high-speed injection of medicine composed of small particles into the human body by providing air pressure from an air compressor , In order to effectively inject the medicine into the skin tissue.

In order to prevent or treat skin elasticity, skin wrinkles, scars, or hair loss, in recent years, a drug injection device that instantly injects drugs into the skin through air pressure has been developed in large numbers. Therefore, as a skin regeneration method for improving skin wrinkles or scars, plastic surgery, a technique for high-frequency energy transmission to the skin, and a drug injection method are well known.

However, surgical plastic surgery procedures have disadvantages because they inevitably cause small scars after surgery and require high surgical costs. Also, the technology for high-frequency energy transfer to the skin layer is a technology that uses electrodes or needles to transfer high energy to the skin layer, and may be accompanied by burns on the skin surface. In addition, as the most commonly used method in recent years, a syringe or motor is used to inject drugs into the body. In the case of skin damage, it is difficult to inject drugs into the dermis due to the sinking of the skin, especially when the skin is damaged. When the wrinkle is located at the surgical site, and because the drug is usually injected into the body through a syringe needle, the patient has a problem of severe pain.

In the method of injecting medicine into the body, in order to solve the above-mentioned problems, the document of Korean Patent No. 10-1484753 discloses a needleless nozzle type medicine injection device that does not have a syringe needle as an injection nozzle. The drug injection device according to this document is a device that when the piston enters the circle by providing air pressure When the barrel moves forward and backward, it can provide medicine into the skin tissue. This device must store the medicine in a certain space to maintain the airtightness of the medicine, and to meet this demand, a rubber ring is used on the outer surface of the piston as a sealing member for restricting the movement of the medicine.

However, because the above-mentioned drug injection device is equipped with a complicated internal structure, its disadvantages are that durability and reproducibility are drastically reduced, and it is difficult to find the cause of error in actual surgery. In addition, the rubber ring wrapped around the outer surface of the piston is susceptible to long-term use and wear, resulting in pressure relief of the device. In addition, when the piston reciprocates in the front-rear direction, the frictional force between the piston receiving part (the matching structure of the piston) and the piston is worn or scratched at many locations, resulting in the overall performance of the device decline.

[Related Literature]

[Patent Literature]

(Patent Document) Korean Patent No. 10-1484753 (patent published on January 20, 2015).

The present disclosure has been developed to solve the technical limitations and problems in the above-mentioned related fields. In particular, the present disclosure provides a medicine injection device that can reduce the gap between the piston and the piston receiving part (which is the piston matching structure during the reciprocating movement of the piston). Piston wear caused by contact occurs, and by changing the structure of the rubber ring wound on the outer surface of the piston, a smooth reciprocating movement of the piston is achieved without pressure relief of the device.

In order to achieve the above object, the present disclosure provides a medicine injection device, which includes a medicine transporter, which is configured to receive the air pressure provided by the air compressor and eject the medicine outward, and a medicine feeder, which is arranged in the medicine transporter To transport the medication to the medication transporter, wherein the medication transporter It includes a casing to form an external shape; a piston placed in the casing and arranged to be movable in the front-rear direction, the front-rear direction being the direction in which the medicine is ejected by air pressure; and a cylinder integrally joined to a rear part of the piston And maintains contact with an inner surface of the housing, and the piston includes a first member surrounded by an elastic part having a predetermined elastic force; and a second member having a fitting groove, a part of the first member It is inserted into the fitting groove to detachably connect the second member to the first member.

According to the disclosure proposed in this article, instead of the rubber ring covering the piston, an integral O-ring is used, in which there is an inner elastic member in which a spring is installed, and an outer elastic member covering the outer surface of the inner elastic member. The outer elastic member can reduce wear or crowding caused by contact with a piston receiving part which is a matching structure of the piston during the reciprocating movement of the piston.

In addition, since the piston is arranged to be divided into two members that can be screwed to each other, and a front member of the two members is formed by slanting the front surface, the integral O-ring can be smoothly and appropriately joined to the outer surface of the piston, It is good for manufacturing.

In addition, a stepped component with a predetermined curvature is formed in the matching structure of the piston, so as to realize smooth reciprocating movement of the piston in the matching structure.

5: Connect the hose

6: Solenoid valve

8: The first branch hose

9: The second branch hose

10: main body

11: cart

11a: Air compressor

12: switch

13: Pressure regulator

20: Monitor

30: drug feeder

40: Drug Delivery Device

100: Drug injection device

110: Shell

120: Medication pressurizing parts

121: Axis

130: drug storage parts

140: hose

150: medicine receiving part

151: Connector

152: Syringe

155: The first drug receiving area

156: Combination Zone

156a: Piercing

157: The second drug receiving area

160: cover member

161: Nozzle device

165: Deformable member

166: guide member

200: bracket

210: cylinder

215: Piston receiving part

217: step parts

220: Piston

221: first component

222: Tilt Parts

223: front stage difference

224: Back stage difference

225: connecting rod

226: first elastic part

227: second elastic part

228: second member

229: Fitting Groove

250: stop

2261: Outer elastic member

2262: inner elastic member

2263: Spring member

FIG. 1 is a block diagram of an embodiment according to the present disclosure, which briefly illustrates the delivery process of air pressure to the drug injection device.

Figure 2 is a perspective view showing the connection between the main body and the drug injection device.

Fig. 3 is a perspective view showing the overall shape of the medicine injection device when viewed from the rear.

Figure 4 is a perspective view showing the drug injection device of Figure 2 with the housing removed.

FIG. 5 is a cross-sectional view showing the internal structure of part A in FIG. 4.

Fig. 6 is an exploded perspective view of the piston of the drug injection device.

Fig. 7 is an assembled perspective view of the piston of Fig. 6;

Fig. 8 is a cross-sectional view showing the internal structure of the elastic part designed to wrap part of the piston.

Fig. 9 is a cross-sectional view showing the configuration of the medicine when the piston moves backward.

Fig. 10 is a cross-sectional view showing that the medicine is ejected when the piston moves forward.

In the following, preferred embodiments of the present disclosure are described with reference to the accompanying drawings. Although the present disclosure has been described with reference to the embodiments shown in the drawings, this description is provided as an example, and the technical spirit and key elements and actions of the present disclosure are not limited thereto.

FIG. 1 is a block diagram of an embodiment according to the present disclosure, which briefly illustrates the delivery process of air pressure to the drug injection device. In addition, FIG. 2 is a perspective view showing the connection relationship between the main body and the drug injection device.

1 and 2, the medicine injection device 100 according to the present disclosure is connected to a main body 10 in which the pressure regulator 13 is installed. The main body 10 is connected to a cart 11, in which an air compressor 11a as a source of air pressure is accommodated. That is, the main body 10 is configured to be used as an intermediary to transport the air pressure provided by the air compressor 11 a to the medicine injection device 100. The pressure regulator 13 is embedded in the main body 10 and can adjust the air pressure provided to the main body 10 within an optimal value range.

The main body 10 has an external monitor 20 that allows the user to confirm the air pressure. That is, the user can confirm the current pressure intensity provided by the air compressor 11a through the monitor 20, and confirm the pressure intensity required to supply the medicine injection device 100, and then decide whether to operate the pressure regulator 13 or not. According to this, the air pressure conveyed from the main body 10 to the medicine injection device 100 can be appropriately adjusted.

In addition, the main body 10 is connected to the medicine injection device 100 via the connection hose 5. A switch 12 that can be manipulated by a user is installed on one side of the connecting hose 5. The switch 12 may be, for example, a pedal operation device, which can be turned on or off by a user's foot. For example, when a user dislikes When the switch 12 is turned on on the pedal, the air pressure is transported from the main body 10 to the medicine injection device 100 to allow the medicine injection device 100 to operate.

In this example, two bifurcated moving paths of air pressure, a first branch hose 8 and a second branch hose 9 are installed at the end of the connecting hose 5. The first branch hose 8 is connected to one side of the medicine injection device 100 to provide the force to move a cylinder (refer to reference number 210 in FIG. 4) described later, and the second branch hose 9 is connected to the other side of the medicine injection device 100. The side provides the force of the cylinder 210 to move forward. The detailed description will be provided through the following disclosure related to the operation of the drug injection device 100.

In addition, the solenoid valve 6 is installed in the transfer area between the connecting hose 5 and the branch hoses 8, 9 to determine the direction of air pressure movement, or whether to move the air pressure. Specifically, the solenoid valve 6 is configured to control the movement path or the movement direction of the air pressure moving from the connection hose 5 to the first branch hose 8 or the second branch hose 9. The user can personally manipulate the operation of the electric valve 6 through the monitor 20 of the main body 10, although not shown, it can automatically determine whether to operate the solenoid valve 6 according to the telecommunication signal provided by the controller.

Hereinafter, the detailed structure of the medicine injection device 100 is described in more detail.

FIG. 3 is a perspective view showing the overall shape of the medicine injection device when viewed from the rear, and FIG. 4 is a perspective view showing the medicine injection device in FIG. 2 with the casing removed. In addition, FIG. 5 is a cross-sectional view showing the internal structure of part A in FIG. 4.

With reference to these figures, the external shape of the drug injection device 100 is formed by the housing 110 connected to the first branch hose 8 and the second branch hose 9 respectively, which serve as a pneumatic movement path. The medicine feeder 30 is installed on the housing 110 to store medicines, and the medicine transporter 40 is installed in the housing 110 to eject the medicines supplied by the medicine feeder 30 outward (see FIG. 3).

The medicine feeder 30 includes a medicine storage part 130 in which medicine is stored, and the medicine storage part 130 is connected to the medicine receiving part 150 via a predetermined hose 140. The medicine receiving part 150 is located on the front side of the housing 110 to provide storage in the medicine storage Temporary storage space for the medicine in the component 130. and also That is, the medicine stored in the medicine storage part 130 can be moved to the medicine receiving part 150 via the hose 140.

In the case of accommodating high-viscosity medicines in the medicine storage part 130, a medicine pressurizing part 120 may be additionally installed at the rear of the medicine storage part 130 to pressurize the medicine in the medicine storage part 130 so that the medicine is removed from the medicine storage part 130. Move to the medicine receiving part 150 smoothly. The medicine pressing part 120 is configured to be able to move along the shaft 121 to apply pressure to the rear of the medicine storage part 130 so as to move the medicine in the medicine storage part 130 forward.

The connecting piece 151 may form one side of the medicine receiving part 150 to facilitate the engagement with the hose 140. Although not shown, a confirmation valve may be installed in the connecting member 151, and the confirmation valve may restrict or allow movement of the medicine from the medicine storage part 130 to the medicine receiving part 150.

The medicine transporter 40 is installed under the medicine feeder 30, to be precise, in the space inside the housing 110. The drug transporter 40 includes a cylinder 210, which can move in the front/rear direction through the air pressure provided to the housing 110 by the first branch hose 8 and the second branch hose 9, and the piston 220 is integrated with the cylinder 210 It is engaged and can move in the front/rear direction with the movement of the cylinder 210.

In this description, the front direction means the direction from the cylinder 210 to the piston 220, that is, the direction in which the medicine is ejected, and the rear direction means the direction from the piston 220 to the cylinder 210, that is, the direction in which the medicine is ejected. In the opposite direction.

A predetermined space can be provided in the cylinder 210 to fix the piston 220 when the piston 220 is inserted. In addition, a piston holder 200 extending in the front/rear direction may be installed between the piston 220 and the cylinder 210 to fixedly engage the piston 220 to a predetermined space in the cylinder 210. The piston bracket 200 is arranged to be detachably engaged with the piston 220, and a part of the piston bracket 200 is actually placed in the predetermined space of the cylinder 210.

The piston 220 and the piston holder 200 are formed to have a relatively smaller diameter than the cylinder 210, and the cylinder 210 is in contact with the inner surface of the housing 110 to achieve airtightness. Accordingly, the space in the housing 110 can be divided into a front area and a rear area by the cylinder 210.

The front area is connected to the first branch hose 8 and the rear area is connected to the second branch hose 9. Accordingly, when the air pressure is supplied to the front area through the first branch hose 8, the cylinder 210 moves backward and the piston 220 integrally engaged with the cylinder 210 also moves backward, and when the air pressure passes through the second branch hose 9 Provided to the rear area, the cylinder 210 moves forward and the piston 220 also moves forward.

The piston 220, which is a matching structure, is seated in the piston receiving part 215, and the piston receiving part 215 provides a space for the piston 220 to move in the front/rear direction. The piston receiving part 215 is arranged to be integrally engaged with the rear part of the medicine receiving part 150, and the stopper 250 is installed on one side of the piston receiving part 215 to restrict the forward movement of the piston 220. That is, a protruding member having a relatively larger diameter than the piston 220 is formed near the junction of the piston 220 and the piston holder 200, and when the protruding member is caught in the stop 250, the forward movement of the piston 220 can be restricted.

The medicine stored in the medicine feeder 30 is disposed above the medicine receiving part 150, and is moved to the first medicine receiving area 155 inclined at a predetermined angle via the hose 140 and the connecting piece 151. In addition, the first medicine receiving area 155 communicates with the second medicine receiving area 157 disposed in front of the piston 220 to form a temporary storage space for medicine.

The covering member 160 for accommodating the nozzle device 161 (injecting the medicine directly outward) is engaged with the front part of the medicine receiving part 150. The nozzle device 161 may be a needleless nozzle without a separate syringe needle, or a multi-needle nozzle with multiple needles. The user only needs to separate the nozzle device 161 and replace the nozzle as needed, which greatly improves the convenience of use and hygiene.

The bonding area 156 is formed between the covering member 160 and the nozzle device 161 and communicates with the first medicine receiving area 155 and the second medicine receiving area 157. That is, the first medicine receiving area 155, the second medicine receiving area 157, and the combining area 156 are spaces that communicate with each other, and represent a space for receiving the medicine provided by the medicine feeder 30.

The guiding member 166 with a plurality of holes on the outer surface is installed between the first and second drug receiving areas 155 and 157 and the binding area 156. That is, the medicines stored in the first medicine receiving area 155 and the second medicine receiving area 157 can move to the bonding area 156 via the plurality of holes of the guide member 166.

The deformable member 165 is installed between the nozzle device 161 and the guide member 166, and its shape can be changed instead of whether the medicine is compressed. The deformable member 165 is arranged to change its shape according to the supplied pressure, so when the piston 220 moves forward, the deformable member 165 is spaced from the nozzle device 161, and when the piston 220 moves backward, the deformable member 165 approaches and The nozzle device 161 contacts.

The perforation 156 a is formed on a part of the end of the nozzle device 161, wherein the nozzle device 161 contacts the deformable member 165 to provide a moving space for the medicine contained in the bonding area 156. That is, when the piston 220 moves forward, the perforation 156a is opened to eject the medicine, and when the piston 220 moves backward, the perforation 156a is closed by the deformable member 165 to restrict the movement of the medicine.

As mentioned above, the first medicine receiving area 155, the second medicine receiving area 157, and the binding area 156 need to be airtight, except that the medicine is compressed due to the forward movement of the piston 220. This airtight function can be achieved by an elastic part joined to the outer surface of the piston 220. Hereinafter, the detailed structure of the piston 220 will be described in detail.

Fig. 6 is an exploded perspective view of the piston of the drug injection device, and Fig. 7 is an assembled perspective view of the piston. In addition, FIG. 8 is a cross-sectional view showing the internal structure of the elastic part designed to cover a part of the piston.

6 to 8, the piston 220 can be divided into a first member 221 including a front side and a second member 228 including a rear side. In addition, the first member 221 is inserted into the fitting groove 229 formed in the second member 228 along the front/rear direction, so that the first member 221 and the second member 228 are joined. For example, the first member 221 and the second member 228 may be spirally joined to each other.

For the first member 221 placed in the insertion groove 229, the first member 221 includes a connecting rod 225, and the connecting rod 225 has a relatively smaller diameter than the second member 228. In addition, there is a difference of 224 And a front step 223 is installed on the outer surface of the connecting rod 225, the rear step 224 is in contact with the front surface of the second member 228, and the front step 223 has the same diameter as the step 224, and is located at an interval from the rear step 224. Relatively forward position. In addition, an inclined part 222 is installed on the front surface of the first member 221, and the inclined part 222 has an inclined outer surface so that the diameter gradually increases from front to back.

In addition, the first elastic part 226 is inserted between the inclined part 222 and the front step 223, and the second elastic part 227 is inserted between the rear step 224 and the front surface of the second member 228. Accordingly, the first elastic portion 226 can smoothly move along the inclined outer surface of the inclined portion 222 to the front surface of the front step 223, and then be inserted into the front outer surface of the connecting rod 225. In addition, when the second elastic part 227 is inserted into the connecting rod 225, the second elastic part 227 is inserted along the connecting rod 225 having a relatively small diameter, so that the second elastic part 227 is different from the rear surface of the rear step 224. Contact to show the easy insertion and installation of the elastic part.

The first elastic portion 226 and the second elastic portion 227 are made of a material having a predetermined elastic force and directly contact the piston receiving part 215.

The piston receiving part 215 may be divided into a front part having a relatively small diameter and a rear part having a relatively large diameter. Specifically, a level difference member 217 having a predetermined level difference is formed between the front part and the rear part of the piston receiving part 215. According to the fact that when the piston 220 moves backward, the elastic parts 226 and 227 move to the rear part via the step member 217, and when the piston 220 moves forward, the elastic parts 226 and 227 pass through the step member 217 and contact the inner surface of the front part. . In this case, the elastic parts 226 and 227 are compressed, and through this compression, the airtight function in the device can be ensured.

The step member 217 may be formed into a curved shape according to a predetermined curvature. Accordingly, when the piston 220 moves forward, the elastic parts 226 and 227 can easily move to the front part of the piston receiving part 215 along the curved part of the stepped member 217, so that the wear or scratches caused by the reciprocating movement of the piston 220 are obvious. cut back.

Traditionally, the elastic parts 226 and 227 are made into the shape of a rubber ring. However, during the reciprocating movement of the piston 220, a part of the matching structure (the piston receiving part 215) causes the elastic part of the rubber ring shape to be stuck or ruptured, and severe wear occurs, resulting in a sharp drop in the airtightness of the medicine storage space.

Accordingly, as shown in FIG. 8, the elastic portions 226 and 227 according to the present disclosure can solve the above-mentioned problems. By installing a spring member 2263 in an inner elastic member 2262, the inner elastic member 2262 surrounds the outer surface of the connecting rod 225 to The connecting rod 225 is contacted to provide additional elasticity, and the outer surface of the inner elastic member 2262 is covered with an outer elastic member 2261 to wrap the inner elastic member 2262 and the spring member 2263. However, it should be mentioned that if the inner elastic member 2262 is made of a material with a predetermined elastic force, its type or material is not limited. In addition, the outer elastic member 2261 may be Teflon (Teflon) material. However, it should be mentioned that if the outer elastic member 2261 is made of a material with a predetermined elastic force, its type or material is not limited.

The spring member 2263 may include a V-shaped spring, a coil spring, or a coil spring. However, the type of the spring member 2263 is not limited to this. In addition, when the spring member 2263 is covered by the inner elastic member 2262, foreign matter can be prevented from intruding into the elastic parts 226 and 227. In addition, wrapping the outer elastic member 2261 on the outer surface of the inner elastic member 2262 can increase the abrasion resistance and maintain the airtightness of the medicine storage space.

In the following, the process of ejecting the medicine from the medicine injection device 100 will be described in detail.

Figure 9 is a cross-sectional view showing that the medicine is stored in the device when the piston moves backward, and Figure 10 is a cross-sectional view showing that the medicine is ejected when the piston moves forward.

First, the diagram in FIG. 9 illustrates the injection preparation state before the medicine is injected to the outside, and shows that the pedal switch 12 has not been pressed by the user. Specifically, the pressure regulator 13 of the main body 10 adjusts the air pressure from the air compressor 11 a to an optimized pressure, and then the air pressure moves along the connecting hose 5. In addition, because the connecting hose 5 and the first branch hose 8 are in communication with each other, when the air pressure is transported to the front part of the piston 220 through the solenoid valve 6 installed at the end of the connecting hose 5, the joined piston 220 and the bracket 200 and the circle The barrel 210 moves backward, as shown in FIG. 9.

Following this, the medicine storage part 130 of the medicine feeder 30 receives part of the air pressure and moves along with the first branch hose 8, and accordingly, the medicine stored in the medicine storage part 130 moves to the medicine receiving part 150 via the hose 140 . In another example, the medicine storage component 130 may be connected to an independent air pressure supply, which may be electrically connected to the switch 12 and receive air pressure from the air pressure supply.

According to the above process, the medicine is temporarily stored in the first medicine receiving area 155, the second medicine receiving area 157, and the bonding area 156 that communicate with each other, and the deformable member 165 maintains close contact with the nozzle device 161, and therefore, the perforation 156a is Closed to prevent the medicine from moving to the outside.

In this state, in order to generate a signal for ejecting the medicine to the outside, the user presses the switch 12 to change the path of the air pressure. Specifically, when the switch 12 is turned on, the solenoid valve 6 changes the air pressure movement path from the first branch hose 8 to the second branch hose 9. Accordingly, when air pressure is transported to the rear of the cylinder 210, the cylinder 210, the bracket 200 and the piston 220 that are connected together move forward, as shown in FIG. 10.

When the piston 220 moves forward, the elastic parts 226 and 227 wound on the outer surface of the piston 220 are in a state of being compressed to the outer surface of the piston 220 while passing through the stepped member 217. In addition, because the step member 217 bends with a predetermined curvature, the movement of the elastic parts 226 and 227 can be performed more smoothly, and it can solve the wear or scratches caused by the crowding or jamming in the matching structure or the piston receiving part 215. Mark problem.

When the piston 220 moves forward, the compressive force is supplied to the medicines stored in the first medicine receiving area 155, the second medicine receiving area 157, and the joint area 156 that communicate with each other, and accordingly, the deformable member 165 changes its shape A space separated from the nozzle device 161 by a predetermined distance is formed in the width direction. In other words, the perforation 156a is opened, and the medicine that has passed through the perforation 156a can be ejected to the outside via the nozzle device 161.

Therefore, the medicine injection device 100 according to the present disclosure can deliver the medicine composed of small particles injected at a high speed into the human body through the air pressure provided from the outside, so as to effectively inject the medicine into the skin tissue.

5‧‧‧Connecting hose

6‧‧‧Solenoid valve

8‧‧‧First branch hose

9‧‧‧Second branch hose

10‧‧‧Main body

11‧‧‧Trolley

11a‧‧‧Air compressor

12‧‧‧Switch

13‧‧‧Pressure Regulator

100‧‧‧Drug injection device

Claims (11)

A medicine injection device includes a medicine transporter configured to receive the air pressure provided by an air compressor and eject the medicine outward, and a medicine feeder arranged on the medicine transporter to transport the medicine to the medicine transporter The drug delivery device includes: a housing to form an external shape; a piston placed in the housing and movable in a front-to-back direction, the front-to-back direction being the direction in which the drug is ejected by air pressure; and a cylinder, one body Ground is joined to a rear portion of the piston and maintained in contact with an inner surface of the housing; wherein, the piston includes: a first member, including a connecting rod, a step with a relatively larger diameter than the connecting rod, And an inclined part placed at a front part of the step and having a predetermined inclination angle, the first member is surrounded by an elastic part having a predetermined elastic force, and the elastic part includes an outer surface surrounding the connecting rod to contact The inner elastic member of the connecting rod, and at least one spring member inserted into the inner elastic member to supply additional elastic force; and a second member having a fitting groove, and a part of the connecting rod of the first member is placed Into the fitting groove to detachably connect the second member to the first member; wherein the front direction refers to the direction from the cylinder to the piston, and the rear direction refers to the direction from the piston to the circle The direction of the tube. The medicine injection device according to claim 1, wherein the step includes: a front step, which is placed behind one of the inclined members; and A rear stage difference is placed at a relatively rear position compared to the front stage difference, and is separated from the front stage difference by a predetermined distance. The medicine injection device according to claim 2, wherein the elastic part comprises: a first elastic part placed between the inclined member and the front step; and a second elastic part, a rear surface of the rear step contact. The medicine injection device according to claim 3, wherein the inclined member has an outer surface, and as an increasing diameter is inclined from front to back, the first elastic part is placed between the inclined member and the front step. The medicine injection device according to claim 1, wherein the elastic part further includes an outer elastic member covering an outer surface of the inner elastic member to wrap the inner elastic member and the spring member. The medicine injection device according to claim 1, further comprising: a medicine receiving part located at a front part of the medicine feeder and the medicine transporter to provide a temporary storage space for medicine, wherein the medicine receiving part includes: a The first medicine receiving area is inclined at a predetermined angle as a temporary storage space for the medicine supplied through the medicine feeder; and a second medicine receiving area is used for the medicine to move to the medicine through the first medicine receiving area A temporary storage space at the front of the carrier. The medicine injection device according to claim 6, wherein a covering member is installed on a front portion of the medicine receiving part to cover a nozzle device that projects the medicine outward, and a bonding area is formed on the covering member and Between the nozzle devices, the joining area is a forward movement space where the medicine is transported from the first medicine receiving area and the second medicine receiving area. The medicine injection device according to claim 7, wherein a guide member and a deformable member are further installed in the covering member, and the guide member has a plurality of holes on an outer surface to allow the medicine to pass from the first A medicine receiving area or the second medicine receiving area is moved to the bonding area, the deformable member is located at a front of the guide member, wherein when the piston moves in the front/rear direction, the deformable member changes its shape, And a part of the deformable member is inserted into a rear end of the nozzle device, and a perforation is formed at the rear end of the nozzle device, and the perforation is an external movement path for the medicine to be stored in the bonding area. The medicine injection device according to claim 8, wherein when the piston moves forward, the deformable member is spaced apart from the rear end of the nozzle device, and the perforation is opened, and when the piston moves backward, the deformable member The deforming member contacts the rear end of the nozzle device, and the perforation is closed. The medicine injection device according to claim 8, wherein a piston receiving part is formed on a rear part of the medicine receiving part, the piston receiving part is a space in which the piston is received, and a differential part is formed on the piston One side of the receiving part is used to guide the elastic part to move along the piston receiving part to be in a state, and the elastic part is compressed when the piston moves forward. The medicine injection device according to claim 10, wherein the stepped member has a diameter that decreases from back to front, and is curved with a predetermined curvature.

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