JP2016019701A - Medicine delivery device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To achieve simplification and downsizing of a structure.SOLUTION: A medicine delivery device comprises: a cylindrical body 2 having a body in which a medicine 10 is encapsulated, and a cylinder tip 5 in which a delivery hole 5a for delivering the medicine is formed; a lid body 3 having an air inflow hole 6a and coupled to the cylindrical body; and a sealing film 15 for closing the air inflow hole by being adhered to the lid body during non-delivery of the medicine from the delivery hole. An internal space 9, which communicates with the delivery hole and the air inflow hole and in which an expansion agent 11 and the medicine are encapsulated in a separated state, is formed by the cylindrical body and the lid body. The expansion agent is encapsulated in the internal space and made of a material containing iron as a main component. Air flows through the air inflow hole, iron oxide is generated by oxygen in the flowing air, and this causes the expansion agent to expand. Pressure is applied to the medicine due to the expansion of the expansion agent and cases the medicine to be delivered from the delivery hole. The sealing film is adhered to the lid body, thereby stopping the delivery of the medicine from the delivery hole.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a technical field of a medicine delivery device that delivers medicine enclosed in an internal space from a delivery hole formed in a cylinder tip.

Patent 4276691 U.S. Pat. No. 3,964,482 International Publication No. 2000/74764 Patent Publication 2013-90808 Special table 2003/504170

  There is a method of puncturing a muscle or blood vessel using injection to administer a drug to a patient, but in order to deliver the drug into the body for a long time, an infusion stand that supports the drug or a drug is sent from the reservoir Long tubes must be used, often inconvenient for patient activity.

  On the other hand, there is a method in which a drug is liquefied, applied to the skin, permeated and administered to a patient. In this method, it is possible to administer the drug without causing pain to the patient, but the drug may be removed from the skin due to sweating or mechanical factors, resulting in insufficient administration of the drug to the patient. There is a risk. Further, in the method of applying a drug to the skin and allowing it to penetrate, when a drug having a large molecular weight is administered, there is a possibility that the absorption from the skin becomes insufficient and the skin may be damaged.

  Therefore, there is a method in which a drug is mixed with low molecular collagen and a needle-like structure having a plurality of needles is applied to the skin with an adhesive tape (for example, see Patent Document 1). Such a method is known as “stick injection”, in which a collagen needle containing a drug is dissolved by body temperature, the drug is absorbed by the skin (epidermis), and the drug can be administered without pain.

  Further, there is a method in which a needle is punctured into the skin and a liquid medicine is supplied from a reservoir using electrophoresis, a pump, a motor, or the like and injected (for example, see Patent Documents 2 to 5). Because this method requires a large reservoir to deliver the drug, it is possible to administer more drug to the patient than “stick injection”.

  However, in the methods described in Patent Documents 2 to 5, it is possible to administer many drugs without causing pain to the patient. However, a reservoir is necessary and an electric circuit, a pump, etc. Is required, and a large-scale apparatus having a complicated structure is used, and inconvenience occurs particularly when used in daily life.

  Then, the chemical | medical agent delivery apparatus of this invention aims at overcoming the above-mentioned problem and aiming at the simplification and size reduction of a structure.

  1stly, the chemical | medical agent delivery apparatus which concerns on this invention is formed in the shape which at least one part is made into a cylinder shape and has two openings on the opposite side, and the delivery hole which sends out the said chemical | medical agent and the main body in which a chemical | medical agent is enclosed. A cylindrical housing having a formed tube tip, a lid having an air inflow hole and coupled to one end of the cylindrical housing in a state of closing the one opening, and the medicine delivery hole And a sealing film that is attached to the lid when not fed from and closes the air inflow hole, and is in communication with the delivery hole and the air inflow hole by the cylindrical housing and the lid, and an expansion agent And an internal space enclosed in a state where the medicine is separated, the expansion agent is enclosed in the internal space and is made of a material mainly composed of iron, and air is introduced from the air inflow hole, Acid by at least oxygen in the flowed-in air Iron is generated and the expansion agent is expanded, pressure is applied to the drug by the expansion of the expansion agent, the drug is delivered from the delivery hole, and the sealing film is attached to the lid body and The delivery of the medicine from the delivery hole is stopped.

  Thereby, the medicine enclosed in the internal space is sent out from the delivery hole by the expansion agent being expanded.

  Secondly, in the medicine delivery device according to the present invention described above, the medicine is enclosed in the internal space in a state of being covered by the barrier film, and each part of the barrier film is formed by the medicine and the cylindrical housing, respectively. It is desirable to be located between and between the drug and the swelling agent.

  Thereby, a chemical | medical agent is isolate | separated from a swelling agent, and bioincompatible components, such as a metal ion to a swelling agent and a chemical | medical agent from a cylindrical housing | casing, do not penetrate | invade.

  3rdly, in the chemical | medical agent delivery apparatus which concerns on above-described this invention, the backflow prevention film which prevents the inflow to the said expansion | swelling agent of the said chemical | medical agent is arrange | positioned between the said expansion | swelling agent and the said chemical | medical agent at least in the said internal space. Is desirable.

  Thereby, the water | moisture content of a chemical | medical agent stops flowing into a swelling agent.

  Fourthly, in the above-described drug delivery device according to the present invention, it is desirable that a needle to be punctured into the skin or a tube in which a needle is coupled to the tip is attached to the tube tip.

  Thereby, the medicine delivered from the delivery hole is injected into the skin from the needle.

  According to the present invention, since the medicine enclosed in the internal space is delivered from the delivery hole by expanding the inflating agent, the structure of the reservoir, the electric circuit, the pump, or the like becomes unnecessary, and the structure is simplified and reduced in size. Can be achieved.

2 to 8 show an embodiment of the medicine delivery device of the present invention, and this figure is a sectional view showing the entire structure of the medicine delivery device. FIG. 3 and FIG. 4 show the procedure for assembling the medicine delivery device, and this figure is a cross-sectional view showing a state in which the medicine covered with the barrier film is inserted into the cylindrical housing. It is sectional drawing which shows the state by which the backflow prevention film and the expansion | swelling agent covered with the air interruption | blocking film were inserted in the inside of the cylindrical housing in order. It is sectional drawing which shows the state by which the cover body was couple | bonded with the cylindrical housing | casing. FIG. 6 and FIG. 7 show operations and operations when using the medicine delivery device, and this figure is a cross-sectional view showing a state in which the cylindrical housing is fixed to the skin by the adhesive tape and the needle is punctured into the skin. FIG. It is sectional drawing which shows the state by which the sealing film was peeled from the cover body, the punching jig | tool was inserted in the air inflow hole, and the through-hole was formed in the air interruption | blocking film. It is sectional drawing which shows the state by which air flows into the inside of an air interruption | blocking film, an expansion | swelling agent is expanded, a chemical | medical agent is sent out from a delivery hole, and the chemical | medical agent is inject | poured into the body from the needle | hook. It is sectional drawing which shows an example of a use condition when a needle | hook is attached to the cylinder tip.

  EMBODIMENT OF THE INVENTION Below, the form for implementing the chemical | medical agent delivery apparatus of this invention is demonstrated with reference to an accompanying drawing.

  In addition, the medicine delivery device has a delivery hole formed in the tube tip. In the following description, the direction in which the delivery hole extends is defined as the vertical direction, and the tip direction of the tube tip is defined as the lower direction. However, the vertical direction shown below is for convenience of explanation, and the implementation of the present invention is not limited to these directions.

<Overall structure of drug delivery device>
First, the overall structure of the medicine delivery device 1 will be described (see FIG. 1).

  The medicine delivery device 1 includes a cylindrical housing 2 formed in a cylindrical shape penetrating vertically and a lid 3 coupled to an upper end portion of the cylindrical housing 2.

  The cylindrical housing 2 is formed by integrally forming a main body 4 and a cylinder tip 5 with a highly rigid transparent or translucent material, for example.

  The main body 4 includes a cylindrical portion 4a formed in a cylindrical shape or a rectangular tube shape, and an inner flange-shaped connecting portion 4b projecting inward from a lower end portion of the cylindrical portion 4a. The tube tip 5 protrudes downward from the inner peripheral portion of the connecting portion 4b and is formed in a cylindrical shape or a rectangular tube shape. The space inside the tube tip 5 is formed as a delivery hole 5a.

  In addition, although the example in which each part of the cylindrical housing | casing 2 was integrally formed was shown above, as for the cylindrical housing | casing 2, at least one of the cylindrical part 4a, the connection part 4b, or the cylinder tip 5 is other parts. On the other hand, it may be formed as a separate body, and each part formed as a separate body may be combined. Further, the entire cylindrical housing 2 does not need to be formed of a transparent or translucent material, and at least a portion of the cylindrical portion 4a in which a medicine to be described later is enclosed is formed of a transparent or translucent material. Just do it. When the cylindrical housing 2 is transparent or semi-transparent, it is possible to determine the degree of consumption of the medicine sealed in the cylindrical housing 2 with the naked eye.

  For example, when the outer diameter (outer shape) is about 10 mm, the cylindrical housing 2 has a thickness of 0.5 mm to 2.0 mm, for example, a length of 50 mm to 100 mm.

  The lid 3 is formed of a metal material or a resin material, and includes a closing portion 6 that closes the upper opening 2a of the cylindrical housing 2 and a cover portion 7 that covers the upper end portion of the cylindrical housing 2 from the outer peripheral side. The closing part 6 is formed in a plate shape facing in the vertical direction, and the cover part 7 projects downward from the outer peripheral part of the closing part 6.

  The closing part 6 is formed with an air inflow hole 6a penetrating vertically. A plurality of air inflow holes 6a may be formed. FIG. 1 shows an example in which a plurality of air inflow holes 6a, 6a,.

  The cover 3 is coupled to the cylindrical housing 2 by, for example, a screw, adhesion, thermocompression bonding, or the like, with the cover 3 covering the upper surface of the cylindrical portion 4a. When the lid 3 is coupled to the cylindrical housing 2, the upper opening 2 a of the cylindrical housing 2 is closed by the closing portion 6.

  When the medicine delivery device 1 is of a type that can be used repeatedly, it is necessary to repeatedly enclose a medicine and an expanding agent, which will be described later, inside the medicine delivery device 1. It is desirable that the cylindrical housing 2 be coupled by a removable screw or the like without being bonded by bonding or thermocompression bonding.

  A cap 8 is attached to the tip of the tube tip 5. The cap 8 can be attached to and detached from the tube tip 5 and is formed of a metal material or a resin material. By attaching the cap 8 to the tube tip 5, the lower opening 2 b of the cylindrical housing 2, that is, the opening at the tip of the tube tip 5 is closed by the cap 8. Accordingly, the cap 8 prevents foreign matters such as moisture and dust from entering the inside of the cylindrical housing 2 from the delivery hole 5a.

  As described above, the lid 3 is coupled to the cylindrical housing 2 to form the internal space 9 in the cylindrical portion 4a. The internal space 9 communicates with the delivery hole 5 a of the tube tip 5 and the air inflow hole 6 a of the lid 3.

  In the internal space 9, a medicine 10 and an expanding agent 11 are sealed, for example, in a state of being separated in the vertical direction.

  The medicine 10 is located below the swelling agent 11. The drug 10 is a water-soluble drug.

  Examples of the drug 10 include insulin, antipyretic analgesic / antiinflammatory agent, steroidal anti-inflammatory agent, vasodilator, arrhythmia agent, antihypertensive agent, local anesthetic agent, hormone agent, antihistamine agent, general anesthetic agent, sleep analgesic agent, Examples include antidepressants, psychiatric nerve agents, skeletal muscle relaxants, autonomic nerve agents, anti-parkinsonian agents, diuretics, vasoconstrictors, respiratory accelerators, and the like.

  The drug 10 is generally a liquid. However, in a state in which the medicine 10 is sealed in the internal space 9, as will be described later, a state in which the tube 5 is attached to the tube tip 5 and a tube having a needle coupled to the distal end portion is fixed to the skin. Then, when the needle is punctured into the skin, it may be gelled with low molecular collagen or gelatin so that it melts at body temperature. The drug 10 is covered with the barrier film 12 and is in contact with all the peripheral members via the barrier film 12. Therefore, each part of the barrier film 12 is positioned between the drug 10 and the cylindrical housing 2 and between the drug 10 and the swelling agent 11.

  Before starting the delivery of the medicine 10, a puncture jig (not shown) is inserted from the delivery hole 5 a of the tube tip 5 to form an insertion hole to be described later in the barrier film 12, and a needle or a tip portion is formed on the tube tip 5. After the tube having the needle attached thereto is attached, the expansion agent 11 is expanded and the drug delivery device 1 is used.

  The barrier film 12 is formed of, for example, an ethylene-vinyl acetate copolymer, polyethylene, polyethylene, an ethylene-vinyl acetate copolymer, a cyclic olefin copolymer, polypropylene, or the like.

  As described above, since each part of the barrier film 12 is in contact with all the peripheral members, the drug 10 covered with the barrier film 12 is reliably separated from the swelling agent 11, and the swelling agent 11 and the cylindrical housing 2 are separated. Invasion of bioincompatible components such as metal ions from the medicine 10 into the body can be prevented, and invasion of bioincompatible components into the body can be prevented.

  The expansion agent 11 is made of a material mainly composed of metal powder, for example, iron powder, and is expanded by generating iron oxide by oxygen and moisture in the air. Specifically, the swelling agent 11 is formed of a metal powder such as iron powder as a main component and a reaction aid such as metal halide such as sodium chloride or metal sulfate, and a water retention agent such as water and a polymer absorbent. ing.

  The inflating agent 11 is enclosed in the internal space 9 in a state of being accommodated in the air blocking film 13 and blocked from air, for example. The air blocking film 13 is made of, for example, an ethylene-vinyl alcohol copolymer resin or a nylon (synthetic polymer polyamide) -based synthetic resin.

  Each part of the air blocking film 13 is in close contact with the inner surface of a backflow prevention film described later and the lower surface of the lid 3. However, the backflow prevention film may not be used. In this case, each part of the air blocking film 13 is in close contact with the inner peripheral surface of the cylindrical housing 2, the lower surface of the lid 3, and the upper surface of the barrier film 12. The

  When the through-hole which will be described later is formed in the air blocking film 13, the expansion agent 11 is converted into iron oxide by the air flowing in through the air inflow hole 6 a of the lid 3, generating heat and volume. Expands about twice. When the expansion agent 11 expands, pressure is applied to the drug 10 by the expansion, and the drug 10 is delivered from the delivery hole 5a. Since the volume of the swelling agent 11 is about doubled, for example, the swelling agent 11 having a thickness of 10 mm can deliver the medicine 10 having a thickness of 10 mm from the delivery hole 5a.

  As described above, since the expansion agent 11 is covered with the air blocking film 13 so that the expansion agent 11 is blocked from the air, the expansion agent 11 is not expanded by mistake before the drug 10 is delivered. 10 erroneous transmissions can be prevented. In addition, the swelling agent 11 can be stored in a small volume before being expanded, and the size of the internal space 9 can be reduced accordingly, and the medicine delivery device 1 can be downsized. Can do.

  For example, when the cylindrical part 4a, the lid 3 and the sealing film described later can sufficiently block the air from the expansion agent 11, the expansion agent 11 is not necessarily enclosed in the air barrier film 13. For example, it may be enclosed in the internal space 9 in a state of being accommodated in an accommodation bag formed of a nonwoven fabric or the like through which air can pass.

  A portion excluding a part of the backflow prevention film 14 is disposed in the internal space 9. The backflow prevention film 14 is formed of, for example, an ethylene-vinyl acetate copolymer, polyethylene, polyethylene, an ethylene-vinyl acetate copolymer, a cyclic olefin copolymer, polypropylene, or the like.

  The backflow prevention film 14 is disposed so as to cover the expansion agent 11 from the outer surface side except the upper side while being covered with the air blocking film 13, and a pressed portion 14 a in which a part on the upper end side projects outward. It is provided as. The backflow prevention film 14 has a pressed portion 14 a placed on the upper surface of the cylindrical portion 4 a in the cylindrical housing 2, and the pressed portion 14 a is pressed from above by the closing portion 6 of the lid body 3, thereby It is attached to the body 2.

  By using the backflow prevention film 14 in this way, even if the medicine 10 flows into the expansion agent 11 side through the wall surface of the cylindrical portion 4a, the backflow prevention film 14 expands the moisture contained in the medicine 10. Inflow to the agent 11 can be prevented, and a good function of the expansion agent 11 can be ensured.

  A sealing film 15 is attached to the upper surface of the lid 3. As the sealing film 15, an adhesive tape or the like that can be repeatedly applied to and peeled from the lid 3 is used. The air inflow hole 6 a of the lid 3 is sealed by the sealing film 15.

  The sealing film 15 is peeled off from the lid 3 when the medicine delivery device 1 is used (during administration of the medicine), and the lid 3 is peeled off to release the sealed state of the air inflow hole 6a.

  By sticking the sealing film 15 to the lid 3 in this way, the air inflow hole 6a is sealed when the medicine delivery device 1 is not used, and the air inflow hole 6a is mistakenly inserted when the medicine delivery device 1 is not used. A foreign substance does not enter and a through-hole is not formed in the air blocking film 13, and misuse of the medicine delivery device 1 can be prevented.

  In addition, since the sealing film 15 is affixed to the lid 3, foreign matter enters the air inflow hole 6 a and is not clogged, and the inflow of air into the air inflow hole 6 a is not hindered. It is possible to reliably deliver the medicine 10 to the outside during use.

<Assembly procedure of drug delivery device>
Next, a procedure for assembling the medicine delivery device 1 will be described (see FIGS. 1 to 4).

  In addition, when the cylindrical housing | casing 2 is not formed integrally but is comprised by a different body by several members, each member formed by the separate body is couple | bonded and the cylindrical housing | casing 2 is formed.

  First, the chemical | medical agent 10 covered with the barrier film 12 is inserted in the inside of the cylindrical housing | casing 2, and the cap 8 is attached to the cylinder tip 5 (refer FIG. 2). Next, the backflow preventing film 14 and the expansion agent 11 covered with the air blocking film 13 are sequentially inserted into the internal space 9 of the cylindrical housing 2 from above (see FIG. 3). The barrier film 12 is brought into contact with the upper surface of the connecting portion 3 b, and the air blocking film 13 is brought into contact with the inner surface of the backflow prevention film 14.

  Subsequently, the lid 3 is coupled to the upper end of the cylindrical housing 2 (see FIG. 4). An internal space 9 is formed by coupling the cylindrical housing 2 to the lid 3, and the medicine 10 and the swelling agent 11 are enclosed in the internal space 9.

  Next, the sealing film 15 is attached to the upper surface of the lid 3 to close the air inflow hole 6a, and the assembly of the medicine delivery device 1 is completed (see FIG. 1).

<Work and operation when using the medicine delivery device>
Below, the operation | work and operation | movement at the time of use of the chemical | medical agent delivery apparatus 1 are demonstrated (refer FIG. 5 thru | or FIG. 7).

  First, the cap 8 is removed from the tube tip 5 with the tube tip 5 of the cylindrical housing 2 facing up, and a puncture jig (not shown) is inserted into the delivery hole 5a of the tube tip 5 to form an insertion hole 12a in the barrier film 12. After the puncture jig is pulled out from the tube tip 5, the needle 50 or the tube 60 to which the needle 50 is coupled to the distal end portion is attached to the tube tip 5 (see FIG. 5). The tube 60 is preferably formed of a material having high flexibility such as a rubber material.

  Next, the needle 50 is punctured into the skin 100 where the medicine 10 is to be injected, and the cylindrical housing 2 is fixed to the arm or the skin 100 with the adhesive tape 70, the belt 70, or the like.

  Next, the sealing film 15 is peeled off from the lid 3, a needle-shaped punching jig 80 is inserted into the air inflow hole 6 a, and the tip of the punching jig 80 is pressed against the air blocking film 13 (see FIG. 6). A through hole 13 a is formed in the air blocking film 13 by pressing the tip of the punching jig 80 against the air blocking film 13.

  When the through hole 13a is formed in the air blocking film 13, air flows into the air blocking film 13 from the through hole 13a through the air inflow hole 6a, and iron oxide is generated by oxygen and moisture in the air. The expansion agent 11 is expanded (see FIG. 7). When the swelling agent 11 is expanded, pressure is applied to the medicine 10. At this time, the medicine 10 is delivered from the needle 50 punctured into the skin 100 into the body.

  In addition, when the expansion agent 11 is sealed in the internal space 9 by the lid 3 and the sealing film 15 and an accommodation bag formed of a nonwoven fabric or the like is used instead of the air blocking film 13, a hole is formed. Without removing the sealing film 15 without performing the operation of forming the through hole 13a in the air blocking film 13 by the jig 80, iron oxide is generated by oxygen and moisture in the air, and the expansion agent 11 is expanded. The

  Therefore, when a storage bag is used instead of the air blocking film 13, the operation at the time of injecting the medicine 10 becomes simple, and the usability of the medicine delivery device 1 can be improved.

  In the medicine delivery device 1, as described above, since the medicine 10 is sealed under the swelling agent 11, the medicine 10 is pressed from above when the swelling agent 11 is inflated, and the medicine 10 is in the internal space 9. , The upper opening in the delivery hole 5a is not easily blocked by the air blocking film 13 that accommodates the expansion agent 11. Therefore, the medicine 10 is fed from the inner space 9 into the delivery hole 5a by a constant amount at a constant speed, and a stable use state of the medicine delivery device 1 can be ensured.

  If it is desired to stop the delivery of the medicine 10 during the use of the medicine delivery device 1, the sealing film 15 is affixed to the lid 3 again to close the air inflow hole 6 a, and the inside of the air blocking film 13. What is necessary is just to stop expansion | swelling of the expansion agent 11 so that the inflow of air may not be performed.

  In the above, in each drawing, the example in which the needle 50 is attached to the cylinder tip 5 via the tube 60 is shown, but the needle 50 may be attached to the cylinder tip 5 of the cylindrical housing 2 without the tube 60 interposed. In this case, for example, the drug delivery device 1 can be used by puncturing the skin 50 with the needle 50 in a state where the cylindrical housing 2 is suspended on a hanging tool (not shown). .

  Further, when the needle 50 is directly attached to the tube tip 5 of the cylindrical housing 2 without using the tube 60, for example, by using the needle 50 bent in advance, the cylindrical housing 2 is attached to the adhesive tape 70 or the belt. It can be fixed to the arm or the skin 100 by 70 or the like (see FIG. 8).

  By using the bent needle 50 in this way, the cylindrical housing 2 can be fixed to the arm or the skin 100 with the adhesive tape 70, the belt 70, etc., so that the tube 60 is unnecessary and is easy to use. The drug delivery device 1 can be used in a simple configuration while ensuring improvement.

  As described above, in the medicine delivery device 1, the expansion agent 11 is made of a material mainly composed of iron, iron oxide is generated by oxygen and moisture in the air, and the medicine 10 is delivered to the outside. Therefore, the medicine 10 can be reliably delivered to the outside with a simple configuration.

  In addition, the swelling agent 11 can be stored in a small volume before being expanded, and the size of the internal space 9 can be reduced accordingly, and the medicine delivery device 1 can be downsized. Can do.

  Further, the tube 50 is attached with a needle 50 that is punctured into the skin 100 or a tube 60 with the needle 50 coupled to the distal end portion, so that the injection of the drug 10 from the needle 50 into the body is simple. This can be easily performed by means, and the usability of the medicine delivery device 1 can be improved.

DESCRIPTION OF SYMBOLS 1 ... Drug delivery apparatus 2 ... Cylindrical housing 2a ... Opening 2b ... Opening 3 ... Cover body 4 ... Main body 5 ... Tube tip 5a ... Delivery hole 6a ... Air inflow hole 9 ... Internal space 10 ... Drug 11 ... Expansion agent 12 ... Barrier Film 14 ... Backflow prevention film 15 ... Sealing film 50 ... Needle 60 ... Tube 100 ... Skin

Claims (4)

A cylindrical housing having at least a part of a cylindrical shape and having two openings on the opposite side and a main body in which a medicine is sealed and a cylindrical tip formed with a delivery hole for delivering the medicine;
A lid having an air inflow hole and coupled to one end of the cylindrical housing in a state of closing the one opening;
A sealing film that is attached to the lid when the medicine is not delivered from the delivery hole and closes the air inflow hole;
The cylindrical housing and the lid form an internal space that is in communication with the delivery hole and the air inflow hole and is sealed in a state where the expansion agent and the medicine are separated,
The expansion agent is made of a material mainly composed of iron enclosed in the internal space,
Air is introduced from the air inflow hole, iron oxide is generated by at least oxygen in the inflowed air, the expansion agent is expanded, and the expansion of the expansion agent applies pressure to the drug so that the drug is Sent out from the delivery hole,
A medicine delivery device in which the sealing film is attached to the lid and delivery of the medicine from the delivery hole is stopped. The drug is enclosed in the internal space in a state covered with a barrier film,
The medicine delivery device according to claim 1, wherein each part of the barrier film is positioned between the medicine and the cylindrical housing and between the medicine and the swelling agent. The medicine delivery device according to claim 1 or 2, wherein a backflow prevention film for preventing inflow of medicine into the swelling agent is disposed between at least the swelling agent and the medicine in the internal space. The drug delivery device according to claim 1, 2 or 3, wherein a needle to be punctured into the skin or a tube having a needle coupled to the tip is attached to the tube tip.

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