KR20170137471A - Drug and cosmetic delivery device by using ultrasonic waves - Google Patents

Abstract

The present invention relates to a device for injecting drugs using ultrasound. More specifically, the present invention relates to a device for injecting drugs using ultrasound, which is capable of non-invasively injecting drugs applied to affected areas using ultrasound energy, adjusts injection depth for drugs by altering electric potential and power supply cycles, and additionally includes a drug insertion part and a drug case mounted to the drug insertion part, thereby allowing a user to selectively use types of injected drugs depending on condition of the affected area on a patient.

Description

[0001] DRUG AND COSMETIC DELIVERY DEVICE BY USING ULTRASONIC WAVES [0002]

The present invention relates to a device for injecting drugs using ultrasonic waves, and more particularly, to a device for injecting drug using ultrasound energy, which not only medicines applied to the affected area are administered non-invasively, The present invention relates to a device for injecting medicines and cosmetics using ultrasound, which is provided with a separate drug input part and a drug case mounted on the drug input part so that a practitioner can select and use the type of drug to be injected will be.

In general, the drug is applied to the living body in a variety of routes after being processed into a formulation that is convenient to apply and pharmacological effects can be expressed optimally. In addition, the administered drug is released into the formulation and then absorbed and distributed to the organs along the bloodstream, and then lost by metabolism and urinary excretion. In addition, the pharmacological effect of the drug is exerted by the drug reaching the in vivo action site, and the drug to the other site mainly causes the side effect. Since the drug efficacy of the general drug is proportional to the concentration of the drug in the blood, It is necessary to adjust the shape of the blood concentration curve with the technique. Of course, drugs with severe side effects when converted to anticancer drugs, genetic materials or normal tissues would need to maximize drug delivery to the target site using specific techniques rather than by controlling blood levels.

However, conventionally, there are a method of administering a drug through the oral cavity, a method of administering it through the oral cavity, a drug which is difficult to administer orally, or an injection to be administered to a site where local application is required. However, In addition, when the drug is absorbed, the drug is absorbed into other parts of the body, which are the most important side effects of the drug, distributed along the bloodstream to the organs. In the case of injections, There was a problem that the administration of the drug was reluctant.

Therefore, it is necessary to control the in vivo behavior of the drug by various techniques so as to stably and effectively express the drug treatment and to selectively act on the possible action site of the drug. In addition, the non-invasive method for injecting the drug into the body, Drug Delivery System), TDS (Transdermal Delivery System), and medical industry. At this time, supersonic wave has a frequency of 1 MHz or more, which is a sound vibrating at a speed that can not be heard by humans.

Conventional devices using ultrasound energy include a skin beauty device, which is used for massaging skin using a piezoelectric element and a skin cosmetic gel, and is mainly used for ultrasonic vibration using a 1MHz / 3MHz piezoelectric element and an ultrasonic horn It is a system that stimulates one cell at a resonance point of 1 million per second through minute vibration. It helps the beauty of the skin by the circulation of blood and the heat action of the deep part of the body. The skin cosmetic gel was applied to the surface of the skin by using the liquid atomization phenomenon which occurs upon resonance of the ultrasonic horn.

However, a skin beauty device using conventional ultrasonic energy, which is mainly used for a cosmetic effect using a piezoelectric element of 1 MHz / 3 MHz mainly permeates a vibration effect on the surface of a skin, and has a massage effect, a heat effect, a cleaning effect, Was used to enhance the absorption of cosmetics, but did not deliver drugs directly to areas of arthritis or various pain. That is, in the case of a conventional ultrasonic cosmetic device, it has a problem that it can not be used for the purpose of delivering a drug to the body, only acting on the skin layer.

Therefore, it is necessary to develop an ultrasonic drug and a cosmetic injection device which can selectively apply drugs according to the affected part of a patient and can easily penetrate the coated drug by separating the drug into fine particles due to the vibration of the ultrasonic waves. to be.

Drug injection system using ultrasound energy. 10-2009-0084867 Drug injector. Ultrasound Apparatus for Promoting Transdermal Drug Delivery.

Disclosure of the Invention The present invention has been conceived to solve the problems described above, and it is an object of the present invention to provide an ultrasound diagnostic apparatus, which can improve the permeability of a drug absorbed through skin by dividing a drug into ultrafine particles, It is an object of the present invention to provide a drug and cosmetic injection device.

Further, according to the present invention, a separate drug injection unit and a drug case are provided to allow a practitioner to select and inject a drug according to the state of treatment of the affected part of the patient or the type of the affected part, thereby maximizing the therapeutic effect Lt; RTI ID = 0.0 > and / or < / RTI >

A drug and cosmetic injection device using ultrasound according to the present invention includes: a drug case 100 in which a drug is contained; And an injection port 220 communicating with the accommodation space S1 and having an inlet rod 210 through which the fluid flows and a jetting port 220 through which the fluid introduced into the inlet rod 210 is discharged. A housing (200); A drug injection path 310 which is detachably attached to one side of the housing 200 for injecting a drug into the inflow rod 210 and transfers the drug to the inflow rod 210, A drug infusion section 300 in which a case accommodating section S2 to which the drug case 100 is mounted is formed to supply a drug to the drug infusion section 300; A drug absorber 400 inserted into the accommodation space S1 to absorb a drug introduced into the inflow rod 210; An ultrasonic vibrator 510 having an ultrasonic oscillator 510 for transmitting ultrasonic vibration to the drug absorber 400 so that the drug absorbed by the drug absorber 400 is divided into fine particles and is injected through the injection port 220, ). ≪ / RTI >

In the present invention, the drug absorber 400 is provided at one side of the drug absorber 420 to absorb a certain amount of the drug, and absorbs the vibration generated from the ultrasonic transducer 510 And a vibration transmitting portion 410 for transmitting vibration to the drug contained in the drug absorber 420.

In addition, the housing 200 includes a first housing 230 having the injection port 220 therein; A second housing 240 coupled to the first housing 230 so as to be detachably attached thereto and having the inflow rod 210 protruded from one side thereof; One end of the drug absorber 400 is inserted and fixed and the other end is coupled to the ultrasonic housing 500 to transmit ultrasound vibration to the drug absorber 400. [ And a third housing (250).

The third housing 250 may further include a vibration transmission pad 600 for guiding the ultrasonic vibration, which is diffused outside the third housing 250, to a predetermined area.

A guide protrusion 320 protrudes from one side of the drug infusion section 300 adjacent to the drug infusion passage 310 and the fixing protrusion 330 is formed on the other side of the drug infusion passage 300, A guide groove 241 is formed in a side surface of the supporter 240 to prevent the drug introducing passage 310 and the inflow rod 210 from being displaced from each other, A fixing protrusion coupling portion 510 into which the fixing protrusion 330 is inserted to guide the mounting position of the drug injection portion 300 before the guide protrusion 320 is inserted into the guide groove 241 Respectively.

In addition, the present invention is characterized in that a push rod 700 for elastically supporting one side of the drug case 100 is provided in the case accommodating part S2, and a push rod 700, which is opposed to the push rod 700 and is discharged from the drug case 100 And a case guide plate 800 for supporting the other side of the drug case 100 to prevent the drug from leaking from the inflow part of the drug infusion path 310.

In addition, a push rod 700 for elastically supporting one side of the drug case 100 is provided in the case receiving part S2 and a case 700 for supporting the other side of the drug case 100, And a guide plate 800. The case guide plate 800 penetrates the drug case 100 to move the drug contained in the drug case 100 to the drug injection path 310, The case guide plate 800 is formed in the case receiving portion so as to prevent the drug from leaking from the drug case 100 into which the through pin 810 is inserted. And a first elastic member 820 for elastically supporting the other side of the first elastic member 820.

The present invention has the additional advantage of allowing the operator to select the desired drug according to the condition and condition of the patient, as well as the advantage of smooth absorption of the drug sprayed onto the skin using the vibration of the ultrasonic waves.

The present invention also provides a drug absorber capable of absorbing a certain amount of a drug to improve the rate at which the drug is reacted when the drug is divided into a mist shape and includes at least one housing for facilitating detachment of the drug absorber, Or more.

In addition, the present invention has a push rod and a case guide plate to prevent the drug from leaking out from the drug case, and the drug injection part can be easily detached and attached.

FIG. 1 is a perspective view showing an overall state of a drug and cosmetic injection device using ultrasonic waves according to the present invention,
FIG. 2 is an exploded perspective view showing an embodiment of the housing of the present invention and a main structure of a drug injection device using ultrasonic waves,
3 is a cross-sectional view showing the internal structure of the present invention and the internal structure of the drug infusion section,
4 is a sectional view showing another embodiment of the housing and the first housing of the present invention,
5 is a cross-sectional view showing an embodiment of the drug infusion section of the present invention and another embodiment, and Fig.
6 is a cross-sectional view showing another embodiment of the medicine injecting unit of the present invention.

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

The terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component. And / or < / RTI > includes any combination of a plurality of related listed items or any of a plurality of related listed items.

When such components are implemented in practical applications, two or more components may be combined into one component, or one component may be divided into two or more components as necessary. The same reference numerals are given to the same or similar components throughout the drawings, and detailed descriptions of components having the same reference numerals can be omitted and replaced with descriptions of the above-described components.

2 is an exploded perspective view showing a main structure of a drug infusion apparatus using ultrasonic waves according to an embodiment of the present invention, FIG. 3 is a cross-sectional view of the drug infusion apparatus according to the present invention FIG. 4 is a cross-sectional view showing another embodiment of the housing and the first housing of the present invention, FIG. 5 is a sectional view showing an embodiment of the drug infusion section of the present invention and another embodiment And Fig. 6 is a cross-sectional view showing another embodiment of the medicine injecting section of the present invention.

Referring to FIGS. 1 to 6, an injection device according to the present invention may include a drug case 100, a housing 200, a drug injection unit 300, and an ultrasonic housing 500.

The drug case 100 may receive / store the skin transfer material therein. The skin-transmitting substance means a substance to be delivered to the epidermis which is the outermost layer of the skin such as drugs, cosmetics and the like, or a substance to be transdermally transmitted through the skin shallowly.

The drug case 100 may have a hollow cylindrical shape with one side opened. A cap capable of discharging a skin transfer material (hereinafter referred to as " drug ") may be provided on one opened side of the drug case 100.

The housing 200 may have a cylindrical receiving space S1 having a predetermined diameter. The accommodation space S1 may be formed such that one side thereof is opened. The housing 200 may extend in the left-right direction so that the receiving space S1 may extend in the same manner. The housing 200 may have an inlet rod 210 which communicates with the accommodation space S1 on the outside and has an inlet hole 211 through which fluid can flow.

The housing 200 may have a jet opening 220 through which fluid introduced into the inflow rod 210 is discharged. The jetting port 220 is preferably disposed adjacent to the open space of the receiving space S1. This allows the fluid transferred to the accommodation space S1 to be injected / discharged to the outside through the injection port 220. [

The jetting port 220 may be opened to have the same diameter as the diameter of the receiving space S1, but is not limited thereto. For example, referring to FIG. 5, the injection port 220 may be formed in the form of a nozzle. The nozzle-shaped ejection opening 220 can be ejected at a high pressure when the drug is ejected.

The drug injector 300 can supply the drug into the receiving space S1. The drug injection unit 300 may be detachably attached to one side of the housing 200 to inject the drug into the inflow rod 210.

The drug infusion section 300 may include a case containing section S2 and a drug infusion path 310 therein. The case receiving portion S2 can mount the medicine case 100. [ The drug infusion passage 310 communicates with the case accommodating portion S2 and can transfer the drug in the drug case 100 to the inflow rod 210. [ The drug injection path 310 may be formed to have a predetermined diameter inside the drug injection unit 300. When the drug case 100 is attached to the case receiving part S2, the drug may flow out from the drug case 100 and be discharged to the injection port 220 through the drug injection path 310 and the inflow rod 210. [

The drug absorber 400 may be arranged to be inserted into the receiving space S1 of the housing 200. [ The drug absorber 400 can absorb a certain amount of the drug introduced into the inflow rod 210. [

The drug absorber 400 may include a drug absorption unit 420 and a vibration transmission unit 410. The drug absorption part 420 may be made of any material capable of absorbing moisture such as sponge, urethane, glass wool, isoprene, and the like. The drug absorber 420 preferably has a diameter equal to or smaller than the diameter of the receiving space S1 and is disposed such that one end thereof is adjacent to the injection port 220. [ After the drug absorption unit 420 is disposed in the accommodation space S1, the volume of the drug absorption unit 420 may expand when the drug is absorbed. The drug absorption unit 420 may apply a certain pressure to the inner wall of the accommodation space S1 .

The vibration transmitting portion 410 may be disposed on the other side of the drug absorption portion 420. The vibration transmission portion 410 may be integrally formed with the drug absorption portion 420 or may be formed to be detachable from the drug absorption portion 420. Preferably, the vibration transmitting portion 410 is made of a material harder than the drug absorbing portion 420. The ultrasonic vibrator 510 and the vibration transmitting portion 410 may smoothly transmit the ultrasonic vibration to the drug absorbing portion 420 and the ultrasonic vibration may cause the drug absorbing portion 420 to move forward, Thereby preventing the phenomenon of blocking the outlet.

The ultrasonic housing 500 includes the ultrasonic vibrator 510 and may be disposed in the other side of the housing 200 symmetrical with the jetting port 220.

The ultrasonic transducer 510 can be operated by an external power. The ultrasonic vibrator 510 of the ultrasonic housing 500 may emit a vibration of 20 to 2000 kHz.

The vibration of the emitted ultrasonic wave is transmitted to the drug absorber 400 and the drug can be discharged to the outside through the injection port 220. The ultrasonic transducer 510 generally corresponds to a device for converting electric energy into ultrasonic waves, and various types of ultrasonic transducers 510 may be used depending on the user's selection. In the present embodiment, it is preferable that the ultrasonic transducer is a piezoelectric transducer that generates strong ultrasonic waves in a specific axis.

The drug in the drug case 100 can be absorbed into the drug absorption portion 420 of the accommodation space S1 through the drug injection path 310 and the inflow rod 210. [ Ultrasonic waves generated in the ultrasonic vibrator 510 may be transmitted to the drug absorption unit 420 through the vibration transmission unit 410. When the ultrasonic vibration is transmitted to the drug, the particles of the drug are split, the particles of the drug collide with each other, and the vibration is transmitted between the particles, and the particles of the drug on the surface of the drug absorber 400 are ejected in a mist state . At this time, since the pressure inside the accommodation space S1 becomes higher due to the ultrasonic vibration, the high-pressure mist state drug can be ejected to the injection port 220. [

The drug absorber 400 can hold a certain amount of the drug so that the drug is placed in a static state in the accommodation space S1. Since a certain amount of drug retains the ability to transfer vibration between the drug molecules, and the drug molecules can easily transmit vibration, it is possible to rapidly produce drugs in a mist state. Accordingly, the high-pressure drug can be injected through the injection port 220 into the skin as the drug in the mist state quickly generated rapidly increases the internal pressure of the accommodation space S1.

The housing 2000 may include a first housing 230, a second housing 240, and a third housing 250. The first to third housings 230, 240, and 250 may have a structure capable of mutually fastening, The first, second, and third housings 230, 240, and 250 may be disposed in the housing 200. In this case, the first and second housings 230, Two of them may be integrally formed.

The first housing 230 may include the jetting port 220 on one side thereof. The second housing 240 is coupled to the first housing 230 so as to be freely detachable from the first housing 230, and the inflow rod 210 may protrude from one side of the second housing 240.

The third housing 250 may be detachably coupled to the second housing 240 at one side thereof. The vibration transmitting portion 410 may be fixedly inserted into one side of the third housing 250. The ultrasonic housing 500 may be disposed on the other side of the third housing 250. When the ultrasonic vibrator 510 operates, the ultrasonic vibration can be transmitted to the vibration transmission portion 410 through the third housing 250.

When the first to third housings 230, 240 and 250 are coupled, a space corresponding to a part of the accommodation space S1 is formed inside the first to third housings 230, 240 and 250 so that the accommodation space S1 can be formed therein Respectively.

Vibrations of the ultrasonic vibrator 510 are transmitted to the first to third housings 230, 240 and 250 and simultaneously transmitted to the jetting port 220. At this time, vibration can also be transmitted to the skin contacting the jetting port 220. [ The skin vibration can cause the drug discharged to the injection port 220 to be better absorbed to the skin.

The third housing 250 may include a vibration transmission pad 600 therein. The vibration transmission pad 600 is kept in contact with the ultrasonic transducer 510 at one side thereof and receives the vibration generated at the ultrasonic transducer 510. That is, the vibration generated through the ultrasonic transducer 510 may be diffused to the periphery of the ultrasonic transducer 510. In order to prevent the vibration, the vibration transmission pad 600 contacts the ultrasonic transducer 510, Guides the wavelength.

A guide protrusion 320 protrudes from one side of the drug infusion section 300, that is, a position adjacent to the drug infusion passage 310, and the other side of the drug infusion section 300, A fixing protrusion 330 may be protruded.

A guide groove 241 in which the guide protrusion 320 is inserted may be formed on the side surface of the second housing 240 so as to be embedded in the inner side of the second housing 240. This can prevent the drug infusion passage 310 and the inflow passage 210 from being displaced when the drug infusion section 300 is coupled to the housing 200 or the second housing 240. That is, when the guide protrusion 320 is inserted into the guide groove 241 at the same time, the drug injection path 310 and the inflow path 210 coincide with each other and the drug supplied from the drug case 100 leaks to the outside .

Further, a fixing protrusion coupling portion 510 for inserting the fixing protrusion 330 may be additionally formed on the outer side of the ultrasonic housing 500. This guides the mounting position of the drug infusion section 300 before the guide protrusion 320 is inserted into the guide groove 241. Therefore, a simple detachment / attachment method is provided to the user, and the effect that the operator can grasp and use more stably occurs.

The injection device according to the present invention may further include a push rod 700 disposed inside the case receiving portion S2 and elastically supporting one side of the drug case 100. [ The push rod 700 can support one side of the drug case 100 by receiving elasticity of the second elastic member 710 supported on the inner side of the case receiving part S2.

A seating protrusion 701 for supporting one end of the drug case 100 may protrude from the edge of the push rod 700, preferably the lower edge of the push rod 700.

The injection device according to the present invention may further include a case guide plate 800 disposed at a position corresponding to the inflow part 311 of the drug infusion path 310 facing the push rod 700. The case guide plate 800 supports the other side of the drug case 100 and a fine hole for moving the drug discharged from the drug case 100 to the drug injection path 310 is formed inside the case guide plate 800 . The edge of the case guide plate 800 can simultaneously support the drug case 100 and prevent the drug discharged from the drug case 100 from leaking to the outside.

Another embodiment of the case guide plate 800 of the present invention will be described with reference to FIG.

A through pin 810 may be provided at the center of the case guide plate 800 to pass the drug contained in the drug case 100 through the other side of the drug case 100 to the drug injection path 310. The through-hole pin 810 communicates with the drug injection path 310, and the drug can be transferred to the drug injection path 310 through the through-hole pin 810.

A first elastic member 820 for elastically supporting the case guide plate 800 may be provided at the inflow portion 311 of the drug infusion path 310. [ The first elastic member 820 is located in the support groove 311-1 formed at the edge of the inflow portion 311. [ A guide pin 311-2 for preventing the case guide plate 800 from being separated by the elastic force of the second elastic member 820 is protruded from the front of the support groove 311-1. This allows the case guide plate 800 to be moved in the forward and backward directions. That is, when one side of the drug case 100 is first placed on the push rod 700 and then the drug case 100 is inserted into the case guide plate 800, the push rod 700 presses the drug case 100 to a certain pressure . At this time, since the case guide plate 800 also pressurizes the drug case 100 by the first elastic member 820, the drug discharged from the drug case 100 moves out of the drug injection path 310 into the accommodation space S2 Leakage can be prevented.

On the other hand, a guide rod 311-3 for guiding the forward and backward movement of the case guide plate 800 is formed at the inner edge of the inlet 311. This prevents displacement of the through-hole when the through-hole 810 passes through the other side of the drug case 100, and guides the case guide plate 800 to move along a predetermined horizontal line .

6, an air injection path 340 communicating with the drug injection path 310 may be formed in the drug injection part 300 to inject air into the drug injection path 310 . One side of the air injection path 340 is adjacent to the drug injection path 310, and the air injection tube 910 is connected to the other side. At this time, the air injection pipe 910 may further include a control valve 920 for controlling the inflow / outflow of air supplied from the air injection pipe 910.

The air injection path 340 can easily remove the residual drug remaining in the drug injection path 310 and the housing 200. In addition, the air injection path 340 can increase the pressure of the drug discharged through the drug injection path 310 and improve the spraying force discharged to the outside of the housing 200.

Although not shown in the drawings, the housing 200 may be made of a conductor, according to another embodiment of the present invention. Further, a separate device for generating a low frequency or a high frequency is provided on one side of the ultrasonic housing 500. That is, when a low frequency or a high frequency is transmitted to the housing 200, when a drug injected into the injection port 220 is applied to the skin, low frequency or high frequency stimulates the skin to induce smooth absorption of the drug.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It will be understood by those skilled in the art that various changes and modifications may be made by those skilled in the art without departing from the spirit and scope of the present invention.

100: drug case 200: housing
210: inlet rod 220:
230: first housing 240: second housing
250: third housing 300: drug injection unit
310: Drug injection 400: Drug absorption body
410: drug absorbing part 420: vibration transmitting part
500: Ultrasonic housing 510: Ultrasonic vibrator
600: vibration transmitting pad 700: push rod
800: case guide plate 810: through pin
820: first elastic member

Claims (9)

A medicament case (100) in which at least one skin transfer material of medicines and cosmetics is accommodated;
And a jetting port 220 communicating with the receiving space S1 and having an inlet rod 210 through which the fluid flows and a jetting port 220 through which the fluid introduced into the inlet rod 210 is discharged A housing (200);
(300) having a drug injection path (310) for transferring the skin transfer material of the drug case to the inflow rod (210) and a case receiving part (S2) for mounting the drug case );
A drug absorber 400 which is inserted into the accommodation space S1 and absorbs a skin transferring material introduced into the inflow rod 210; And
And an ultrasonic vibrator (510) for transmitting ultrasonic vibration to the drug absorber (400) so that the skin transfer material absorbed by the drug absorber (400) is ejected through the injection port (220). And a device for injecting drugs and cosmetics using ultrasonic waves. The method according to claim 1,
The drug absorber (400)
A drug absorber 420 for absorbing a predetermined amount of the skin transfer material; And
A vibration transmitting part 410 provided at one side of the drug absorbing part 420 and absorbing the vibration generated from the ultrasonic vibrator 510 to transmit vibration to the skin transmitting material included in the drug absorbing part 420 Including an injection device. The method according to claim 1,
The housing (200)
A first housing (230) having the injection port (220);
A second housing 240 coupled to the first housing 230 so as to be detachably attached thereto and having the inflow rod 210 protruded from one side thereof; And
One end of the drug absorber 400 is inserted and fixed and the other end of the drug absorber 400 is coupled to the ultrasonic housing 500 to transmit ultrasonic vibration to the drug absorber 400. [ The second housing (250). The method of claim 3,
Wherein the third housing (250) is provided with a vibration transmission pad (600) for guiding the ultrasonic vibration diffused to the outside of the third housing (250) to a predetermined area. The method of claim 3,
A guide protrusion 320 is protruded from one side of the drug injection part 300 adjacent to the drug injection path 310 and a fixing protrusion 330 is formed on the other side,
A guide groove 241 into which the guide protrusion 320 is inserted is formed on the side surface of the second housing 240 so as to prevent the drug injection path 310 and the inlet rod 210 from being displaced from each other,
The fixing projection 330 is inserted into the outer side of the ultrasonic housing 500 to guide the mounting position of the drug injection unit 300 before the guide projection 320 is inserted into the guide groove 241. [ And a projection engaging portion (510) is provided. The method according to claim 1,
A push rod 700 for elastically supporting one side of the drug case 100 in the case receiving part S2; And
A case guide plate (not shown) for supporting the other side of the drug case 100 to prevent the drug discharged from the drug case 100 from leaking from the inflow part of the drug infusion path 310 while facing the push rod 700 800). ≪ / RTI > The method according to claim 1,
A push rod 700 for elastically supporting one side of the drug case 100 in the case receiving part S2; And
Further comprising a case guide plate (800) facing the push rod (700) and supporting the other side of the drug case (100)
The case guide plate 800 is provided with a through-hole penetrating the drug case 100 and communicating with the drug injection path 310 to move the drug contained in the drug case 100 to the drug injection path 310, (810) is formed,
A first elastic member 820 for elastically supporting the other side of the case guide plate 800 to prevent the drug from leaking from the drug case 100 in which the through pin 810 is inserted Including an injection device. The method according to claim 1,
Characterized in that the injection port (220) is in the form of a nozzle. The method according to claim 1,
Wherein the drug injection unit (300) further includes an air injection path (340) for injecting air into the drug injection path (310).

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