JP5411729B2 - Drug administration device - Google Patents

Description

  The present invention relates to a drug administration device using a prefilled syringe.

Conventionally, drugs that are chemically unstable, such as blood coagulation factor preparations, hormone preparations, interferon preparations, etc., that lose their effectiveness suddenly when left in solution, have been used as plugs such as pierceable rubber stoppers. Prepared as a powder, granule or lyophilized preparation in a container such as a vial provided, and mixed with a solution such as water for injection, physiological saline, or glucose injection solution at the time of use to prepare a liquid drug To be done.
In order to perform such dissolution at the time of use, conventionally, a syringe with a needle or a device having a hollow puncture needle at both ends, such as a double-ended needle, has been used. That is, when a syringe with a needle is used, first, a certain amount of solution is collected in the syringe, and the needle is inserted into the mouth rubber plug of the vial to inject the solution into the vial. The vial is shaken to dissolve the drug, and the needle is inserted again into the rubber stopper, and a certain amount of the drug solution is collected in a syringe and directly administered, or this is an infusion bag containing glucose injection solution or saline Indirect administration using an infusion set or the like. Also, when using a double-ended needle, the puncture needles at both ends of the double-ended needle are inserted into the rubber stopper of the vial containing the medicine and the rubber stopper of the dissolution liquid container or syringe, respectively, and the both are communicated to allow the solution to flow. Transfer to the vial to dissolve the drug, remove the solution container and double-ended needle from the vial, and then collect a fixed amount of drug solution from the vial to the syringe using the same needle as above or through the double-ended needle However, it is administered directly, or the collected drug solution is transferred to an infusion bag containing glucose injection solution or saline, and indirectly administered using an infusion set or the like. However, the mixing operation (administration preparation work) using such a syringe is complicated and time-consuming.
In addition, the administration preparation work may be performed not only by medical personnel but also by the patient himself who needs self-injection. In particular, patient preparations are often performed in environments where contamination is a concern and in unstable locations. Moreover, there is a risk of forgetting the dissolution work of the powder preparation, causing administration of only the solution in the prefilled syringe, liquid leakage, disconnection of the connection portion, and the like.

  As shown in FIGS. 1 to 8 of Japanese Patent Laid-Open No. 2005-278924 (Patent Document 1), the mixing device 1 is detachably provided on the first container 100 and is provided with a double-ended needle 23. A first connecting member 2, and a second connecting member 3 that is detachably provided on the second container 101 and can be connected to the first connecting member 2. The second connection member 3 is provided with erroneous connection preventing means including a concave portion 31 and a convex portion 21 that can be selectively fitted to each other. And when it is going to join the 1st connection member 2 accidentally to the 2nd container 101 to which the 2nd connection member 3 was previously attached, the convex part 21 of the 1st connection member 2 is the 2nd connection. It is caught in the recess 31 of the member 3 and cannot be inserted any further.

As shown in FIG. 1 of Patent Document 2, the co-infusion adapter 1 of Japanese Patent No. 3475414 (Patent Document 2) has a hollow puncture needle 12 and a tubular tube on the opposite side of the disk-shaped hub 11 on the same axis. A tip mounting portion 13 is provided, and a cylindrical vial mounting portion 14 extending concentrically with the outer edge of the hub 11 beyond the tip of the puncture needle 12 and beyond the tip of the tip mounting portion 13, respectively. A cylindrical syringe mounting portion 15 extending concentrically with this is provided. Further, the puncture needle 12 opens to the chemical passage 122 that communicates with the tip mounting portion 13 and opens to the blade edge 121, and the vent 16 with the sterilization filter 17 provided in the vial mounting portion 14 adjacent to the hub 11. In addition, a gas passage 123 that opens to the cutting edge 121 of the puncture needle 12 is provided.
Then, a syringe filled with a dissolving solution is attached to the tip mounting portion 13, and the lysing needle 12 is inserted into the rubber stopper of the vial so that the syringe and the vial communicate with each other. Can be shaken and mixed easily.

As shown in FIGS. 1, 3, and 7 of Patent Document 3, the dissolution filling syringe for mixing two components disclosed in Japanese Patent No. 3303289 (Patent Document 3) has a communication order between the double-ended needle 3 and the adapter 2. The communication order control means is provided in the vicinity of the vial mounting portion 21 on the inner wall of the adapter 2 and a plurality of flexible engagement branches 34 provided in the axial direction of the peripheral edge of the hub 33. A plurality of vertical grooves 25 that slidably support the engaging branches 34, and an engagement release portion 26 formed at a predetermined position of the vertical grooves 25, and moves the syringe outer cylinder 1 toward the vial mounting portion 21. When the two-headed needle 3 moves along the inner wall of the adapter 2 together with the syringe outer cylinder 1, the engaging branch 34 reaches the disengaging part 26 only after the rubber stopper of the vial is pierced by the upper puncture needle 31. The vertical groove 25 of the adapter 2 and the double-ended needle 3 Engagement of Kakarigoeda 34 is configured to be released, little elution from the rubber plug, it is an there is no risk of leakage.
As shown in FIGS. 1 and 2 of Patent Document 4, the adapter member 1 and the transfer tool kit K disclosed in Japanese Patent Laid-Open No. 2007-260162 (Patent Document 4) are provided with an adapter member 1 including a double-ended needle member 2. Then, when connecting the vial 4 containing the drug and the syringe 3 containing the solution, the double-ended needle member 2 is mounted at a temporary stop position where the seal member 6 of the vial 4 is not pierced, and the cap member 5 The second needle member 22 pierces the cap member 5 in conjunction with the operation of pushing the syringe 3 attached with the first, the syringe and the double-ended needle member are connected first, and then the first needle member 21 pierces the seal member 6; The vial 4 and the double-ended needle member 2 are connected, and the double-ended needle member 2 is fixed in the adapter member 1 to connect the syringe 3 and the vial 4. Then, when the double-ended needle member 2 is pushed in to the end, the syringe 3 and the vial 4 are pierced and connected in the correct piercing order, and the communication state is established. Further, both the double-ended needle member 2 and the cap member 5 are fixed to the adapter member 1, and even if the syringe 3 is pulled out from this state, only the syringe 3 is pulled out.

JP 2005-278924 A Japanese Patent No. 3475414 Japanese Patent No. 3303289 JP 2007-260162 A

In the mixing device described in Patent Document 1, it is necessary to use a syringe with a needle or the like prepared separately in order to suck the mixed chemical after the mixing operation. Accordingly, the number of instruments to be prepared other than the mixing instrument increases, so that the procedure for dissolution at the time of use tends to be complicated. Further, since it is necessary to use a syringe with a needle at the time of mixing operation, there is a risk of puncture not only at the time of administration but also at the time of mixing operation.
In addition, the mixed injection adapter described in Patent Document 2 has no problem as in Patent Document 1, but there is no difference in the appearance of the mixed injection adapter before and after the mixing operation of the medicine, so it is stored in the syringe. There was a risk of misadministration of the dissolved solution before mixing with the drug. Similarly, even in the two-component mixing solution-filled syringe described in Patent Document 3, if the adapter member is removed before mixing the solution previously filled in the syringe with the drug, the solution is used as the drug. There was a risk of misadministration before mixing. Also in the adapter member described in Patent Document 4, a plunger to be attached to the syringe 3 is prepared, and the plunger is attached to the syringe. Thus, only the solution in the syringe 3 can be administered.

  An object of the present invention is to solve the above-described problems of the prior art, and to provide a drug administration device that can be easily mixed and can prevent misadministration with a single solution. It is in.

What achieves the above object is as follows.
(1) an outer cylinder having a nozzle portion provided at a distal end portion, a sealing member that seals the nozzle portion and is detachable or puncturable, and is slidably accommodated in the outer cylinder; and , A gasket having a plunger mounting portion, a medical liquid filled in the outer cylinder, and a medical liquid-storing outer cylinder not having a plunger mounted thereon; a container body having an opening; A drug administration device comprising a seal part for sealing an opening, a drug container composed of a drug housed in the container body, and an adapter connectable to the opening of the drug container,
The adapter has a cylindrical adapter main body having a drug container connecting portion at a base end, is movable in the base end direction from the distal end side in the adapter main body, and the nozzle portion of the outer cylinder is placed in the nozzle portion. A nozzle mounting part that can be mounted in a communicating state or an outer cylinder side puncture part that can pierce the sealing member of the outer cylinder, and a drug container side puncture part that can pierce the seal part of the drug container; An outer cylinder connecting member having a hollow needle-shaped portion, and a plunger that is attached to the adapter and that can be attached to the plunger attaching portion of the gasket after being detached.
The adapter main body and the plunger include an engagement mechanism that prevents the plunger from being detached from the adapter main body, the engagement mechanism protrudes into the adapter main body, and the outer cylinder connecting member can come into contact with the adapter main body and the plunger. The engagement is released by pressing by the outer cylinder connecting member, and includes a disengagement protrusion that allows the plunger to be detached from the adapter.
The disengagement projecting portion is connected to the outer cylinder when the hollow needle-like portion penetrates the seal portion of the drug container and the inside of the outer cylinder and the inside of the drug container are in communication with each other. A drug administration device arranged at a position in contact with a member.

Moreover, what achieves the said objective is as follows.
(2) an outer cylinder having a nozzle portion provided at a distal end portion, a sealing member that seals the nozzle portion and is detachable or puncturable, and is slidably accommodated in the outer cylinder; and , A gasket having a plunger mounting portion, a medical liquid filled in the outer cylinder, and a medical liquid-storing outer cylinder not having a plunger mounted thereon; a container body having an opening; A drug administration device comprising a seal part for sealing an opening, a drug container composed of a drug housed in the container body, and an adapter connectable to the opening of the drug container,
The adapter has a cylindrical adapter main body having a drug container connecting portion at a base end, is movable in the base end direction from the distal end side in the adapter main body, and the nozzle portion of the outer cylinder is placed in the nozzle portion. A nozzle mounting part that can be mounted in a communicating state or an outer cylinder side puncture part that can pierce the sealing member of the outer cylinder, and a drug container side puncture part that can pierce the seal part of the drug container; An outer cylinder connecting member having a hollow needle-shaped portion, and a plunger that is attached to the adapter and that can be attached to the plunger attaching portion of the gasket after being detached.
Further, the adapter has an engaged portion that can be engaged with an engaging portion provided on the plunger, and the engaging portion of the plunger and the engaged portion of the adapter are the outer cylinder connecting member. The drug container side puncture portion maintains the engaged state at the unpunctured position to the seal portion of the drug container, and the drug container side puncture portion of the outer cylinder connecting member completes the puncture to the seal portion of the drug container A drug administration device comprising an engagement mechanism that is disengaged by moving to a position.

(3) The adapter main body is connected to the outer cylinder in which the hollow needle-like portion of the outer cylinder connecting member penetrates the seal portion of the drug container, and the inside of the outer cylinder and the inside of the drug container are in communication with each other. The drug administration device according to (1) or (2), further including a locking portion that suppresses movement of the member toward the distal end side of the adapter main body.
(4) The outer cylinder connecting member includes an engagement release portion, and the engagement mechanism is released when the engagement release portion abuts on an engagement release auxiliary portion provided on the plunger. The drug administration device according to the above (2) or (3).
(5) The adapter has a guide portion for guiding the outer tube connecting member from a non-piercing position to the seal portion of the medicine container to a piercing completion position. The drug administration device according to any one of the above.
(6) The adapter main body includes a guide rib or a guide groove extending a predetermined length in parallel to a central axis provided on an inner surface of the adapter main body, and an outer surface of the outer cylinder connecting member is provided with the adapter main body. 5. The drug administration device according to any one of (1) to (4), wherein a guide groove or a guide rib corresponding to the guide rib or the guide groove is provided.
(7) The outer cylinder connecting member is provided in the hollow needle-shaped part and cannot communicate with the inside of the outer cylinder connected to the outer cylinder connecting member, and the medicine container of the hollow needle-shaped part By having the seal portion pierced, the medicine container has an air flow passage for enabling communication between the inside of the medicine container and the outside air, and the air flow passage is provided with a bacteria-impermeable air-permeable filter ( The drug administration device according to any one of 1) to (6).
(8) The drug administration device according to any one of (1) to (7), wherein the adapter is attached to the drug container.

The drug administration device of the present invention includes a sealing member that seals the outer cylinder and the nozzle portion of the outer cylinder, a gasket that is slidably accommodated in the outer cylinder, and that has a plunger mounting portion, and is filled in the outer cylinder. It is a drug administration device having a medical liquid-contained outer cylinder made of a medical liquid, a drug container, and an adapter connectable to the opening of the drug container. The adapter is a cylindrical adapter main body having a drug container connecting portion, and a nozzle mounting portion that can be moved in the adapter main body and can be mounted on the nozzle portion of the outer cylinder or the outer cylinder side that can be pierced through the sealing portion. An outer cylinder connecting member having a puncture portion and a hollow needle-like portion having a puncture portion on the drug container side that can pierce the seal portion of the drug container, and attached to the adapter and attached to the plunger attachment portion of the gasket after being detached Possible plungers.
The adapter main body and the plunger include an engagement mechanism that prevents the plunger from being detached from the adapter main body. The engagement mechanism protrudes into the adapter main body, and the outer cylinder connecting member can be brought into contact with the outer cylinder connecting member. The engagement is released by pressing, and a disengagement protrusion that allows the plunger to be detached from the adapter is provided. Further, the disengagement protruding portion is a position where the hollow needle-shaped portion penetrates the seal portion of the drug container and contacts the outer cylinder connecting member when or after the inside of the outer cylinder and the drug container are in communication with each other. Are arranged.

  In the drug administration device of the present invention, the medical liquid storage outer cylinder is not equipped with a plunger, and since there is no plunger that can be attached, the medical liquid filled in the outer cylinder is administered. To prevent it. Further, in the medicine administration device of the present invention, when the medicine container storing the medicine to be administered is not attached to the adapter, after the medicine container is attached to the adapter, the medical liquid is already contained in the outer tube connecting member of the adapter. The outer cylinder is connected, and the outer cylinder (the outer cylinder connecting member to which the outer cylinder is connected) is moved (pushed) in the direction of the drug container, whereby the drug container side needle-like portion of the outer cylinder connection member becomes the seal portion of the drug container The inside of the outer cylinder and the inside of the medicine container are in communication with each other. For this reason, the connection work of an outer cylinder and a chemical | medical agent container can be performed easily. Further, the outer cylinder connecting member comes into contact with the engagement releasing projection and is further pressed, so that the plunger can be detached from the adapter main body. Then, the gasket in the outer cylinder can be operated by removing the plunger from the adapter and attaching it to the gasket of the outer cylinder. The medical liquid in the outer cylinder can be injected into the drug container by pressing the plunger or sucking the drug container under reduced pressure. Then, by pulling the plunger attached to the outer cylinder, it is possible to recover the medical liquid (medical solution) in which the drug is dissolved in the syringe.

Further, in the drug administration device of the present invention, a sealing member that seals the outer cylinder and the nozzle portion of the outer cylinder, a gasket that is slidably accommodated in the outer cylinder, and that has a plunger mounting portion; Is a medicine administration device having a medical liquid-contained outer cylinder made of medical liquid filled in a medicine container, a medicine container, and an adapter connectable to the opening of the medicine container. The adapter is a cylindrical adapter main body having a drug container connecting portion, and a nozzle mounting portion that can be moved in the adapter main body and can be mounted on the nozzle portion of the outer cylinder or the outer cylinder side that can be pierced through the sealing portion. An outer cylinder connecting member having a puncture portion and a hollow needle-like portion having a puncture portion on the drug container side that can pierce the seal portion of the drug container, and attached to the adapter and attached to the plunger attachment portion of the gasket after being detached Possible plungers.
The adapter has an engaged portion that can be engaged with an engaging portion provided on the plunger, and the engaging portion of the plunger and the engaged portion of the adapter are punctured on the drug container side of the outer cylinder connecting member. The engagement state is maintained at the position where the portion of the medicine container is not pierced to the seal portion of the medicine container, and the medicine container side puncture portion of the outer cylinder connecting member is engaged by moving to the position where the medicine container seal portion is pierced. An engagement mechanism for releasing the state is provided.

  Also in the drug administration device of the present invention, the medical liquid storage outer cylinder is not equipped with a plunger, and there is no plunger that can be attached, so that the medical liquid filled in the outer cylinder can be administered. Prevent it from being done. Further, in the drug administration device of the present invention, when the drug container storing the drug to be administered is not attached, after attaching the drug container to the adapter, the medical liquid storage outer cylinder is connected to the adapter, By moving (pushing) the cylinder (the outer cylinder connecting member to which the outer cylinder is connected) toward the drug container, the drug container side puncture portion of the hollow needle-like portion of the outer cylinder connection member pierces the seal portion of the drug container, The outer cylinder and the medicine container are in communication. For this reason, the connection work of an outer cylinder and a chemical | medical agent container can be performed easily. Further, by entering this state, the plunger is disengaged from the adapter and can be detached. Then, by attaching the adapter to the gasket of the outer cylinder, the gasket in the outer cylinder can be operated.

FIG. 1 is an external view of an embodiment of a drug administration device of the present invention. FIG. 2 is an enlarged partial sectional view of the drug container in a state where the adapter of the drug administration device shown in FIG. 1 is mounted. FIG. 3 is an enlarged plan view of the drug container in a state where the adapter of the drug administration device shown in FIG. 1 is mounted. 4 is a front view of an adapter used in the drug administration device shown in FIG. FIG. 5 is a cross-sectional view of the adapter shown in FIG. FIG. 6 is an explanatory diagram for explaining an example of an engagement mechanism between the adapter main body and the plunger of the drug administration device of the present invention. FIG. 7 is an explanatory diagram for explaining the operation of the engagement mechanism between the adapter main body and the plunger shown in FIG. 6. FIG. 8 is a cross-sectional view of the medical liquid-contained outer cylinder of the drug administration device shown in FIG. FIG. 9 is an explanatory diagram for explaining another example of the engagement mechanism between the adapter main body and the plunger of the drug administration device of the present invention. FIG. 10 is an explanatory diagram for explaining another example of the engagement mechanism between the adapter main body and the plunger of the drug administration device of the present invention. FIG. 11 is a cross-sectional view of another example of an adapter used in the drug administration device of the present invention. FIG. 12 is a cross-sectional view of another example of an adapter used in the drug administration device of the present invention. FIG. 13 is an explanatory view for explaining another embodiment of the drug administration device of the present invention. FIG. 14 is an explanatory diagram for explaining the operation of the drug administration device shown in FIG. 13. FIG. 15 is an explanatory diagram for explaining the operation of the drug administration device of the present invention. FIG. 16 is an explanatory diagram for explaining the operation of the drug administration device of the present invention. FIG. 17 is an explanatory diagram for explaining the operation of the drug administration device of the present invention. FIG. 18 is an explanatory diagram for explaining the operation of the drug administration device of the present invention. FIG. 19 is an explanatory diagram for explaining the operation of the drug administration device of the present invention.

The drug administration device of the present invention will be described with reference to the embodiments shown in the drawings.
The drug administration device of the present invention seals the outer cylinder 30 having the nozzle portion 32 provided at the tip portion and the nozzle portion 32, and is detachable or puncturable into the sealing member 7 (7 a) and the outer cylinder 30. A medical liquid containing outer cylinder 3 that is slidably housed and includes a gasket 8 having a plunger mounting portion 81 and a medical liquid 38 filled in the outer cylinder 30 and is not mounted with a plunger; A medicine container 4 comprising a container body 41 having an opening, a seal part 42 for sealing the opening, and a medicine 43 accommodated in the container body 41; and an adapter 2 connectable to the opening of the medicine container 4; Is provided. The plunger 5 is detachably attached to the adapter, and the plunger 5 after detachment can be attached to the plunger attachment portion 81 of the gasket 8.
The adapter 2 has a cylindrical adapter main body 21 having a drug container connecting portion 26 at the base end, and is movable in the adapter main body 21 in the base end direction from the distal end side, and the nozzle of the medical liquid-contained outer cylinder 3 A nozzle mounting portion 63 that can be mounted in a state where the portion 32 communicates with the inside of the nozzle portion or an outer cylinder side puncture portion 102 b that can pierce the sealing member 7 a of the outer tube 30, and an outer portion that is mounted on the nozzle mounting portion 63. An outer tube connecting member 6 having a hollow needle-like portion 61 having a drug container side puncture portion 61a that communicates with the inside of the tube 30 on the distal end side and that can pierce the seal portion 42 of the drug container 4 on the proximal end side; The attached plunger 5 is provided.
The adapter 2 has an engaged portion that can be engaged with an engaging portion provided in the plunger 5, and the engaging portion of the plunger 5 and the engaged portion of the adapter 2 are the outer cylinder connecting member 6. The engagement state is maintained at the unpunctured position of the drug container side puncture part 61 a to the seal part 42 of the drug container 4, and the drug container side puncture part 61 a of the outer cylinder connecting member 6 is connected to the seal part 42 of the drug container 4. An engagement mechanism that releases the engagement state by moving to the puncture completion position is provided.
In particular, in the drug administration device of this embodiment, the outer cylinder connecting member 6 includes an engagement release portion, and the engagement mechanism is such that the engagement release portion abuts on an engagement release auxiliary portion provided on the plunger. Thus, the engagement is released.
Specifically, the adapter main body 21 and the plunger 5 include an engagement mechanism that prevents the plunger 5 from being detached from the adapter main body 21. The engagement mechanism protrudes into the adapter main body 21, and can be brought into contact with the outer cylinder connection member 6, and the engagement is released by the pressing by the outer cylinder connection member 6, so that the plunger 5 can be detached from the adapter 2. A disengagement projection 54 is provided. The disengagement projecting portion 54 is configured so that the hollow needle-like portion 61 penetrates the seal portion 42 of the drug container 4 and the outer cylinder 30 and the drug container 4 are in communication with each other or after that. 6 is disposed at a position in contact with 6.

Further, as shown in FIG. 1, the drug administration device 1 of the present invention includes a drug administration device that does not include the above-described drug container, a container main body 41 having an opening, and a seal portion that seals the opening of the container main body 41. 42 and the medicine container 4 having the medicine 43 accommodated in the container body 41, and the medicine administration tool is mounted on the medicine container 4 by the medicine container mounting portion 26. .
As shown in FIGS. 1 and 2, the drug administration device 1 of the present invention includes a drug administration device and a drug container 4 to which the drug administration device is connected. The drug administration device of the present invention includes a medical liquid-contained outer cylinder 3 and an adapter 2 having a mounting portion for the drug container 4. As shown in FIGS. 1 to 7, the adapter 2 includes a cylindrical adapter main body 21, an outer cylinder connecting member 6 that can move in the adapter main body 21, and a plunger 5 that is detachably attached to the adapter 2. Have

FIG. 1 is an external view of a state in which the drug administration device of the present invention is provided.
First, the medical liquid-contained outer cylinder 3 will be described with reference to FIGS. 1 and 8.
The outer cylinder 3 in which the medical liquid is stored includes the outer cylinder 30, a sealing member 7 (specifically, a removable cap) that seals the nozzle portion 32 (tip portion) of the outer cylinder 30, and the outer cylinder 30. And the medical liquid 38 stored (filled) in the outer cylinder 30 sealed by the sealing member 7 and the gasket 8.
As shown in FIGS. 8 and 19, the outer cylinder 30 includes a main body portion, a nozzle portion 32, and a collar 33.
The nozzle portion 32 is provided at the distal end of the main body portion of the outer cylinder 30 and includes a distal end opening for discharging a chemical solution or the like in the outer cylinder, and is formed so as to be reduced in diameter toward the distal end. ing. The collar 33 is formed in a cylindrical shape concentrically with the nozzle portion 32 so as to surround the nozzle portion 32. The collar 33 has an open end, and the inner diameter and the outer diameter of the collar 33 are substantially the same from the proximal end to the distal end. Further, the tip end portion of the nozzle portion 32 protrudes from the tip opening of the collar 33, and the nozzle portion 32 and the tip end portion of the collar 33 accommodate the nozzle portion 32 and the collar 33 in the sealing member (seal cap) 7. It is chamfered to make it easier.
On the inner surface of the collar, a thread groove (outer cylinder side screwing part) is formed for screwing with a screw thread (cap side screwing part) formed in a nozzle housing part of the seal cap 7 described later. . Thereby, the outer cylinder 30 and the seal cap 7 are screwed between the collar inner peripheral surface and the nozzle housing portion outer peripheral surface. The nozzle portion 32 can be attached with an injection needle (hub of the injection needle).

As shown in FIGS. 1, 8, and 19, the outer cylinder 30 has a flange 34. The flange 34 is an elliptical donut-shaped disk portion formed so as to protrude in the vertical direction from the entire rear end circumference of the outer cylinder 30. As shown in FIGS. 1 and 8, the flange 34 includes two gripping portions that are wide and face each other, and a plurality of ribs are formed on the tip surface side of the gripping portion.
The outer cylinder 30 is a cylindrical body made of a transparent or translucent material and, if necessary, a material having low oxygen permeability and water vapor permeability.
Examples of the material for forming the outer cylinder 30 include polypropylene, polyethylene, polystyrene, polyamide, polycarbonate, polyvinyl chloride, poly- (4-methylpentene-1), acrylic resin, acrylonitrile-butadiene-styrene copolymer, polyethylene terephthalate. Various resins such as polyester and cyclic polyolefin can be used, and among them, resins such as polypropylene and cyclic polyolefin are preferable because they are easy to mold and have heat resistance.
Further, the nozzle portion 32 of the outer cylinder 30 is sealed by the sealing member 7. In this embodiment, a removable cap is used as the sealing member. In addition, as a sealing member, the peelable film-like thing which seals the front end surface of the nozzle part 32 may be sufficient.

As shown in FIG. 8, the gasket 8 includes a main body portion extending with substantially the same outer diameter, and a plurality of annular ribs provided on the main body portion (in this embodiment, two, two or more liquid-tight If the slidability is satisfied, the number may be appropriately set.) These ribs are in liquid-tight contact with the inner surface of the outer cylinder 30. Further, the tip surface of the gasket 8 has a shape corresponding to the shape of the inner surface of the distal end of the outer cylinder 30 so that a gap is not formed as much as possible when contacting the inner surface of the distal end of the outer cylinder 30.
As a material for forming the gasket 8, elastic rubber (for example, butyl rubber, latex rubber, silicone rubber, styrene-butadiene rubber, etc.), synthetic resin (for example, styrene elastomer such as SBS elastomer, SEBS elastomer, SEPS elastomer, etc., ethylene It is preferable to use an olefin-based elastomer such as an α-olefin copolymer elastomer.
The gasket 8 is provided with a recess extending inward from the rear end thereof, and this recess serves as a plunger mounting portion 81. Specifically, the plunger mounting portion 81 has a female screw shape and can be screwed with a male screw portion formed on the outer surface of the protruding portion 52 formed at the distal end portion of the plunger 5. The plunger 5 is mounted on the gasket 8 by screwing them together.

The medical liquid 38 filled in the medical liquid containing outer cylinder 3 contains a drug solution such as distilled water for injection and physiological saline, and further contains a drug (for example, vitamins and minerals). In addition, it may be a chemical solution capable of dissolving the powder formulation in the drug container.
As shown in FIG. 8, the seal cap 7 that is a sealing member includes a main body portion 71 having a closed end, a nozzle storage portion 72, and a color storage portion 73.
The nozzle storage portion 72 is provided in the center portion of the seal cap 7 and has a cylindrical shape with a closed end. The inner diameter of the nozzle storage portion 72 is made slightly larger than the nozzle portion 32 and is slightly tapered from the distal end to the proximal end toward the proximal end, and accommodates the entire nozzle portion from the proximal end opening. ing.
A sealing member 74 for sealing the tip opening of the nozzle portion 32 of the outer cylinder 30 in a liquid-tight manner is accommodated in the inner closing surface of the nozzle accommodating portion 72. The seal member 74 is preferably an elastic member so that the tip opening of the nozzle portion 32 of the outer cylinder 30 can be sealed in a liquid-tight manner. As a material for forming the sealing member, it is preferable to use, for example, natural rubber, isoprene rubber, butadiene rubber, fluororubber, silicone rubber or other synthetic rubber, or thermoplastic elastomer such as olefin elastomer or styrene elastomer.
Further, on the outer surface of the nozzle housing portion 72, a thread (cap-side screwing portion) for screwing with a screw groove (outer tube-side screwing portion) formed on the inner surface of the collar 33 of the outer tube 30 is formed. Has been. Thereby, the outer cylinder 30 and the seal cap 7 are screwed between the outer surface of the nozzle housing portion and the inner surface of the collar.

The color storage portion 73 is a cylindrical body that is formed so as to surround the nozzle storage portion 72 and has a closed end, and stores the collar 33 between the inner surface of the color storage portion and the outer surface of the nozzle storage portion. Further, the color storage portion 73 formed in a cylindrical shape is concentric with the nozzle storage portion 72, and the inner diameter of the color storage portion 73 is substantially the same from the front end to the base end.
In addition, as shown in FIG. 1, the outer surface of the seal cap 7 (the outer peripheral surface of the color storage portion 73) is chopped in the vertical direction so that fingers do not slip when the seal cap is rotated. ing.
Examples of the material for forming the seal cap include polypropylene, polyethylene, polystyrene, polyamide, polycarbonate, polyvinyl chloride, poly- (4-methylpentene-1), acrylic resin, acrylonitrile-butadiene-styrene copolymer, polyethylene terephthalate, and the like. Among these, various resins such as polyester and cyclic polyolefin are preferable. Among them, resins such as polypropylene and cyclic polyolefin are preferable because they are easy to mold and have heat resistance.

Next, the adapter 2 will be described with reference to FIGS. 1 to 6.
The adapter 2 includes a cylindrical adapter main body 21, an outer cylinder connecting member 6 accommodated in the adapter main body 21 so as to be movable (specifically, slidable), and a plunger 5 detachably mounted. .
The cylindrical adapter main body 21 is a cylindrical body having a distal end portion and a proximal end portion opened, and the whole has a substantially identical inner diameter. A drug container mounting portion 26 is formed at the proximal end portion of the cylindrical adapter body 21. Moreover, the base end 29 of the cylindrical adapter main body 21 is expanded in a taper shape to facilitate the insertion of the distal end portion (near the seal portion) of the drug container 4.
The medicine container mounting portion 26 accommodates the distal end side portion including the opening of the medicine container sealed by the seal portion 42. Further, the inner diameter of the adapter main body 21 excluding the base end portion where the diameter is increased is smaller than the outer diameter of the main body portion of the drug container 4, and hinders the intrusion of the main body portion of the drug container 4. . For this reason, the medicine container 4 can enter the adapter main body 21 until the main body abuts, and cannot enter further. Further, the adapter main body 21 includes an engaging part for suppressing the detachment of the medicine container attached to the medicine container attaching part 26. Specifically, the inner surface of the drug container mounting portion 26 of the adapter main body 21 is provided with a claw portion 28 that protrudes inward and engages with the lower part of the opening of the drug container (the lower part of the neck part of the drug container). The claw portion 28 constitutes an engaging portion. In this embodiment, a slit 27 for imparting easy deformability to the medicine container mounting portion 26 is provided. In this embodiment, the slit 27 extends from the proximal end of the adapter body to the distal end side beyond the claw portion 28. In this embodiment, the claw portions 28 are provided so as to face each other, and two sets of slits 27 are provided so as to face each other. Specifically, four slits 27 are provided as shown in FIGS.

Moreover, the adapter main body 21 is provided with the opening part 25 provided in the side wall, as shown in FIG.4 and FIG.5. And this opening part 25 forms the adapter main body side engaging part in the engaging mechanism of the adapter main body 21 and the plunger 5 mentioned later. In this embodiment, the opening 25 is a small opening and the shape of the opening surface is substantially rectangular. And this opening part 25 is spaced apart from the front-end | tip and base end of the adapter main body 21, and is provided in the position used as the center side. In this embodiment, the opening 25 is provided at a position slightly closer to the base end than the center.
The outer cylinder connection member 6 is a member that is housed in the adapter main body 21 and is movable (slidable) in the adapter main body in the proximal direction from the distal end side. The outer cylinder connecting member 6 includes a disk-shaped main body 60, and a nozzle mounting portion 63 that can mount the nozzle portion 32 of the medical liquid-containing outer cylinder 3 is provided on the distal end side of the main body 60. On the proximal end side of the portion 60, a hollow needle-like portion 61 is provided. The nozzle mounting portion 63 is provided with a seal member 64 for connecting the nozzle portion 32 of the outer cylinder 30 in a liquid-tight state. And as the sealing member 64, the ring-shaped thin plate member formed with the elastic material is used. As the material for forming the seal member, the material for forming the seal member 74 described for the seal cap can be preferably used.

  In this embodiment, the nozzle mounting portion 63 corresponds to the shape of the distal end portion of the outer cylinder 30 described above. Specifically, the nozzle mounting portion 63 is a cylindrical portion, is made slightly larger than the nozzle portion 32, and has a diameter that is slightly tapered from the distal end to the proximal end toward the proximal end. It is meant to be stored. Further, on the outer surface of the nozzle mounting portion 63, a screw thread (nozzle mounting portion side screwing portion) for screwing with a screw groove (outer tube side screwing portion) formed on the inner surface of the collar 33 of the outer cylinder 30. Is formed. Thereby, the outer cylinder 30 and the nozzle mounting part 63 are screwed between the outer surface of the nozzle mounting part 63 and the inner surface of the collar 33 of the outer cylinder 30. Further, in this embodiment, the outer cylinder connection member 6 includes a color storage portion 62 that stores the collar 33 of the outer cylinder 30. The color storage portion 62 is a cylindrical portion that is formed so as to surround the nozzle mounting portion 63 and whose base end is closed, and stores the collar 33 between the inner surface of the color storage portion 63 and the outer surface of the nozzle storage portion 62. The cylindrical color storage portion 63 is concentric with the nozzle mounting portion 62, and the inner diameter of the color storage portion 63 is substantially the same from the distal end to the proximal end.

The hollow needle-like portion 61 has a distal end (one end) fixed to the main body portion 60 of the outer cylinder connecting member 6 and a puncture portion (drug container side puncture) through which the seal portion 42 of the drug container 4 can be inserted. Part 61a, a medicine container puncturing part) 61a, and extends in a predetermined length proximal direction and substantially parallel to the central axis of the adapter main body 21. The inside of the hollow needle-like portion 6 communicates with the inside of the nozzle mounting portion 63 of the outer cylinder connecting member 6. For this reason, the outer cylinder 30 mounted on the nozzle mounting portion 63 of the outer cylinder connecting member 6 communicates with the inside of the hollow needle-shaped portion 61 in a fluid-tight manner.
Further, the outer cylinder connecting member 6 is disposed at a position where the puncture portion 61 a of the hollow needle-like portion 61 does not come into contact with the drug container 4 attached to the adapter main body 21. Specifically, as shown in FIG. 2, the inside of the adapter 2 is arranged such that the puncture portion 61a of the hollow needle-like portion 61 of the outer cylinder connecting member 6 is separated from the seal portion 42 of the medicine container 4 to be attached by a predetermined length. It is stored in.
In this embodiment, the adapter 2 has a guide portion for guiding the outer cylinder connecting member 6 from the non-piercing position to the seal portion 42 of the medicine container 4 to the piercing completion position. Specifically, as shown in FIG. 3, the adapter main body 21 includes guide ribs 23 provided on the inner surface of the adapter main body 21 and extending a predetermined length in parallel to the central axis of the adapter main body. In this embodiment, a plurality of guide ribs (specifically, two) are provided, and are provided at opposing positions. A guide groove 65 for receiving the guide rib 23 of the adapter main body 21 is provided on the outer side surface of the outer cylinder connecting member 6 (specifically, the side surface of the main body portion 60). Thereby, the movement (sliding) of the outer cylinder connecting member 6 in the adapter main body 21 becomes good, and the rotation of the outer cylinder connecting member 6 in the adapter main body 21 is prevented, and the nozzle mounting portion 63 is moved to the nozzle mounting portion 63. The outer cylinder 30 can be easily attached. The object for providing the guide rib and the guide groove portion may be the reverse of the above, or the guide tube rib may be provided in the outer cylinder connecting member and the guide groove portion for storing the guide rib may be provided in the adapter body. Good.

As shown in FIGS. 2 and 3, the adapter main body 21 includes a retaining rib 24 for the outer tube connecting member 6. The retaining rib 24 is provided at a position on the proximal end side of the predetermined length from the distal end opening of the adapter main body 21. A plurality of ribs 24 are preferably provided. The outer cylinder connecting member 6 is arranged in the adapter main body 21 so as to be closer to the proximal end side than the retaining rib 24.
The adapter main body 21 includes a hollow needle-like portion 61 (specifically, a puncture portion 61a) of the outer cylinder connecting member 6 that pierces the seal portion 42 of the drug container 4, and the inside of the outer cylinder 30 and the drug container 4 are separated from each other. A locking portion 22 that suppresses the movement of the outer tube connecting member 6 in the communicating state toward the distal end side of the adapter main body 21 is provided. In this embodiment, the locking portion 22 is constituted by a rib provided on the inner surface of the adapter main body 21 on the tip side of the predetermined length from the opening 25 described above. A plurality of ribs 22 are provided, and the outer cylinder connecting member 6 that can move can be ridden and can be engaged after it has been ridden. Specifically, the ribs 22 are inclined ribs that increase in the proximal direction of the adapter main body 21.
The adapter 2 has a plunger 5 that is detachably attached to the adapter 2 and that can be attached to the plunger attachment portion 81 of the gasket 8.
Furthermore, in the drug administration device of the present invention, the adapter main body 21 and the plunger 5 include an engagement mechanism that prevents the plunger 5 from being detached from the adapter main body 21. The engagement mechanism protrudes into the adapter main body 21, and can be brought into contact with the outer cylinder connection member 6, and the engagement is released by the pressing by the outer cylinder connection member 6, so that the plunger 5 can be detached from the adapter 2. A disengagement projection 54 is provided.

The disengagement projecting portion 54 is configured so that the hollow needle-like portion 61 penetrates the seal portion 42 of the drug container 4 and the outer cylinder 30 and the drug container 4 are in communication with each other or after that. 6 is disposed at a position in contact with 6. In particular, in this embodiment, as shown in FIG. 16, after the hollow needle-like portion 61 has pierced the seal portion 42 of the drug container 4, the hollow needle-like portion 61 is further pushed in, and the outer cylinder connecting member 6 is The outer cylinder connecting member 6 is disposed so as to come into contact with the disengagement projecting portion 54 after overcoming the locking portion (rib) 22 that suppresses the movement to.
As shown in FIG. 2, the plunger 5 detachably mounted on the adapter 2 has a mounting portion 52 that can be mounted on the plunger mounting portion 81 of the gasket 8 at the tip. The mounting portion 52 is formed by a cylindrical projecting portion formed at the distal end portion of the plunger 5 and an external thread formed on the outer surface of the projecting portion and screwable with a female screw formed on the plunger mounting portion 81 of the gasket 8. ing. The plunger 5 includes a main body 51 extending in the axial direction having a cross-shaped cross section, a pressing disk 53 provided at the rear end, a rib provided in the middle of the main body 51, and the adapter 2. And an engaging portion.
In this embodiment, as shown in FIG. 6, the engagement mechanism between the adapter main body 21 and the plunger 5 includes an opening 25 provided on the side wall of the adapter main body 21 and an opening 25 provided on the plunger 5. It is comprised by the engaging part 54 which can approach in.

Specifically, the plunger 5 includes an engaging portion 54 to the adapter 2 that extends in the lateral direction from the pressing portion 53, and the distal end portion of the engaging portion 54 enters the opening 25 of the adapter main body 21. It is possible. The engaging portion 54 is branched into two at a shaft portion 55 provided on the plunger 5 and a branching portion 59 from the shaft portion 55, can enter the opening portion 25, and can be bent in the proximity direction (elastically deformable). ) Two extending portions 56, 58, with one extending portion 56 positioned on the distal end side of the rib 57, the rib 57 engaging with the inner edge on the distal end side of the adapter body 21 of the opening 25, A contact portion with the outer tube connecting member, and constitutes a disengagement projection. Further, the distal end portion 56 a of the extending portion 56 is an inclined portion that is inclined in the proximal direction of the adapter main body 21. Further, a flat portion is formed between the inclined portion and the rib 57. Further, the extending part 56 is thin and can be elastically deformed in the direction of the extending part 58.
In the drug administration device of this embodiment, as shown in FIG. 7, the outer tube connecting member 6 that moves in the proximal direction in the adapter main body 21 and gets over the locking portion (rib) 22 is engaged. By abutting and pressing the extension part 56 constituting the mating release protrusion, the extension part 56 is deformed in the direction of the extension part 58, and the opening 25 of the adapter body 2 and the rib 57 of the plunger 5 Is disengaged. Thus, the plunger 5 is detached from the adapter 2 by being pulled out in the direction of the arrow.

Further, the engagement mechanism between the adapter body and the plunger may be as shown in FIG. In this embodiment, the engaging mechanism between the adapter main body 21 and the plunger 5a is provided in the opening 25 provided on the side wall of the adapter main body 2, the engaging member 76 attached to the opening 25, and the plunger 5a. And an extension 75 that can enter the opening 25.
Specifically, the engaging member 76 is curved from the vicinity of the outer end portion of the fixing portion 81 by fixing the fixing portions 80 and 81 to the proximal end inner surface portion of the adapter main body of the opening 25 of the adapter main body 21, and the adapter main body. 21 includes a disengagement projection 78 that extends a predetermined length and can be bent in the direction of the fixing portion 80, and an engagement rib 77 provided on the disengagement projection 78. The engaging protruding portion 78 is formed by connecting the engaging protruding portion 78 and the fixing portion 81 by an elastically deformable curved portion 79. And the rib 77 is formed in the upper surface of the protrusion part 78 for engagement, and the rib 77 becomes the inclination rib which inclines below toward the outer side of the opening part 25. As shown in FIG.
Further, the extending portion 75 of the plunger 5 a includes an engaging portion 75 a that engages with an engaging rib 77 provided on the disengaging projection 78. The engaging portion 75 a has an inclined surface corresponding to the shape of the engaging rib 77. The extending portion 75 of the plunger 5 a is biased toward the inner surface of the adapter body 21 at the distal end side of the opening portion 25 by the restoring force of the bending portion 79 of the engaging member 76. The plunger 5a is prevented from being detached from the adapter body 21 by the engagement between the engagement rib 77 of the engagement release projection 78 and the engagement portion 75a of the extension portion 75 of the plunger 5a. The engaging portion 75a of the extending portion 75 of the plunger 5a is a concave portion having an inclined inner surface that can accommodate the tip end portion of the engaging rib 77.
Also in the drug administration device of this embodiment, the outer cylinder connecting member that has moved in the proximal direction within the adapter body and overcame the above-described locking portion (rib) abuts on the disengagement projecting portion 78 and presses it. By doing so, the disengagement projection 78 is deformed in the direction of the fixed portion 80, and the engagement rib 77 of the disengagement projection 78 and the engagement portion 75a of the extension portion 75 of the plunger 5a are engaged. Is released. Accordingly, the plunger 5a is pulled out and detached from the adapter 2.

Further, the engagement mechanism between the adapter body and the plunger may be as shown in FIG. In this embodiment, the engaging mechanism between the adapter main body 21 and the plunger 5b is provided in the opening 25 provided on the side wall of the adapter main body 21, the engaging member 83 attached to the opening 25, and the plunger 5b. And an extension 84 that can enter the opening 25.
The engaging member 83 is provided via a first member 87 fixed to the inner surface of the proximal end side of the adapter main body 21 of the opening 25, a first member 87, and elastic members 89, 90, and a disengagement protrusion. 2nd member 86 which comprises a part, and the protrusion 88 for engagement formed in the upper surface of the 2nd member 86 is provided.
The extension portion 84 of the plunger 5 b includes an engagement protrusion storage portion 85 that stores the engagement protrusion provided on the second member 86. The extending portion 84 of the plunger 5 b is urged by the engaging member 83 to the inner surface portion on the distal end side of the adapter body of the opening 25, and the engaging protrusion 88 of the disengaging protrusion (second member) 86 and the plunger The plunger 5b is prevented from being detached from the adapter main body 21 by the engagement of the extending portion 84 of the 5b with the engaging protrusion accommodating portion 85.
In the engaging member 83, the first member 87 and the second member 86 are formed in a flat plate shape, and fixing portions 91 and 92 to the opening 25 of the adapter main body 21 are formed on the lower surface of the first member 87. Is provided, and is urged in a direction in which both are separated from each other and connects the two. The disengagement protrusion (second member) 86 includes a protrusion 88 that protrudes from the upper surface. Further, the extension portion 84 of the plunger 5b includes an engagement projection storage portion 85 that stores the projection 88 of the second member 86, and the storage portion 85 is a through hole. Note that the engaging protrusion accommodating portion 85 may be a concave portion.
Also in the drug administration device of this embodiment, the outer cylinder connecting member that has moved in the proximal direction in the adapter body and overcame the above-described locking portion (rib) is the disengagement projection (second member) 86. By engaging and pressing, the disengagement projection (second member) 86 is deformed in the direction of the first member 87, and the engagement projection 88 and plunger of the disengagement projection (second member) The engagement of the 5b extending portion 84 with the storage portion 85 is released. As a result, the plunger 5b is pulled out and detached from the adapter 2.

The drug container 4 used in the drug administration device of the present invention includes a container main body 41 having an opening, a seal part 42 for sealing the opening of the container main body 41, a drug 43 stored in the container main body 41, It consists of a fixing member 45 that fixes the seal portion 42.
The container main body 41 may be anything as long as it has an opening and can store the medicine 43 therein. For example, a rigid or semi-rigid synthetic resin container, a glass container, or the like is used. Moreover, it is preferable that the inside of a chemical | medical agent container is pressure-reduced. As the seal portion 42 for sealing the opening, any seal portion may be used as long as it can be punctured (pierced) by the puncture portion 61a of the hollow needle-like portion 61. Examples of the seal portion 42 include elastic rubber (eg, butyl rubber, latex rubber, silicone rubber, styrene-butadiene rubber), synthetic resin (eg, styrene elastomer such as SBS elastomer, SEBS elastomer, and SEPS elastomer, ethylene It is preferable to use an olefin-based elastomer such as an α-olefin copolymer elastomer.
As the medicine, any medicine such as a powder medicine, a freeze-dried medicine, a solid medicine, a liquid medicine, etc. can be used as long as it dissolves in a medical liquid 38 (specifically, a solution) filled in the outer cylinder 30. It may be anything. Examples of drugs include vitamins (general vitamins), various amino acids, antithrombotics such as heparin, insulin, antibiotics, antitumor agents, analgesics, cardiotonic agents, intravenous anesthetics, antiparkinson agents, and ulcer treatments Agents, corticosteroids, arrhythmic agents, hormone preparations, interferon preparations, human immunoglobulin preparations, blood coagulation factor preparations, vaccine preparations, and other protein preparations.

The drug administration device of the present invention may be a drug administration device 10 as shown in FIG. The difference from the drug administration device described above is that the drug-stored outer cylinder 3a includes a sealing member 7a that seals the nozzle portion 32 and has a puncturable portion 74a, and the outer cylinder connection member 6a has its An outer cylinder side puncture portion having a sealing member mounting portion 101 to which such a sealing member 7a can be mounted, and the hollow needle-like portion 102 being able to pierce the sealing member 7a mounted on the sealing member mounting portion 101 It is only the point which has 102b, and others are the same as the Example mentioned above, and shall refer the description mentioned above.
The drug administration device of the embodiment shown in FIG. 13 includes an outer cylinder 30 having a nozzle portion 32 provided at a distal end portion, a sealing member 7a that seals the nozzle portion 32 and has a punctureable portion 74a, The gasket 8 is slidably accommodated in the cylinder 30 and has the plunger mounting portion 81 and the medical liquid 38 filled in the outer cylinder 30, and the medical liquid in which the plunger is not mounted has been stored. A medicine container 4 comprising an outer cylinder 3a, a container body 41 having an opening, a seal part 42 for sealing the opening, a medicine 43 accommodated in the container body 41, and an opening of the medicine container 4 It has a connectable adapter 2a and a plunger 5 that is detachably attached to the adapter 2a and that can be attached to the plunger attachment portion 81 of the gasket 8.

The adapter 2a has a cylindrical adapter main body 21 having a drug container connecting portion 26 at the base end, and is movable in the base end direction from the distal end side within the adapter main body 21 and seals the medical liquid-containing outer cylinder 3a. A sealing member mounting portion 101 capable of mounting the stop member 7a, an outer cylinder side puncture portion 102b capable of piercing the sealing member 7a mounted on the sealing member mounting portion 101, and a seal portion 42 of the drug container 4 And an outer cylinder connecting member 6a having a hollow needle-like portion 102 having a pierceable medicine container side puncture portion 102a.
Also in the drug administration device 10 of this embodiment, the adapter main body 21 and the plunger 5 include an engagement mechanism that prevents the plunger 5 from being detached from the adapter main body 21. The engaging mechanism protrudes into the adapter main body 21 and can be brought into contact with the outer cylinder connecting member 6a. The engagement is released by pressing by the outer cylinder connecting member 6a, and the plunger 5 can be detached from the adapter 2a. A disengagement protrusion is provided. In the drug administration device 10 of this embodiment, the disengagement projecting portion is such that the hollow needle-like portion 102 pierced through the sealing member 7a of the outer tube 3a pierces the seal portion 42 of the drug container 4, and the outer tube. When the inside of 3a and the inside of chemical | medical agent container 4 will be in a communication state, or after that, it is provided in the position contact | abutted with the outer cylinder connection member 6a. As an engagement mechanism between the adapter main body 21 and the plunger 5, those of all the embodiments described above can be used.
The sealing member 7 a attached to the outer cylinder 3 a in this embodiment is a seal cap that can be attached to and detached from the nozzle portion of the outer cylinder 30. The seal cap 7a includes a nozzle portion storage portion and a cap side screwing portion. The seal cap 7a includes a seal cap body 71 and a seal member that constitutes the puncturable portion 74a. The seal cap main body 71 is a cylindrical member that opens at one end side and the other end side, and includes an opening 74b that expands in a tapered shape at the tip end side. And the sealing member 74a is accommodated so that this opening part 74b may be sealed, and the opening of a seal cap is obstruct | occluded. The seal member 74a can be pierced by the outer cylinder side puncture portion 102b of the empty needle-like portion 102, and is formed of an elastic material. The cap-side threaded portion is a portion formed on the other end side of the nozzle portion storage portion with a slightly larger inner diameter, and a thread groove that can be screwed with the thread of the outer tube-side threaded portion on the inner surface. I have.

Examples of the material for forming the seal member 74a include natural rubber, isoprene rubber, butadiene rubber, fluorine rubber, silicone rubber and other synthetic rubbers, SBS elastomers, SEBS elastomers and other styrene elastomers, ethylene-α olefin copolymers, and the like. It is preferable to use a thermoplastic elastomer such as a polyolefin-based elastomer.
Examples of the material for forming the seal cap include polypropylene, polyethylene, polystyrene, polyamide, polycarbonate, polyvinyl chloride, poly- (4-methylpentene-1), acrylic resin, acrylonitrile-butadiene-styrene copolymer, polyethylene terephthalate, and the like. Among these, various resins such as polyester and cyclic polyolefin are preferable. Among them, resins such as polypropylene and cyclic polyolefin are preferable because they are easy to mold and have heat resistance.
The outer cylinder connecting member 6a includes a sealing member mounting portion 101 that can be mounted on the sealing member 7a of the medical liquid-containing outer cylinder 3a provided on the distal end surface side of the main body 60a. The sealing member mounting portion 101 is a short cylindrical portion, and the inner surface shape corresponds to the outer surface shape of the sealing member 7a.
The hollow needle-like portion 102 includes an outer cylinder side puncture portion 102b that can pierce the sealing member 7a attached to the sealing member attachment portion 101 and a drug container side puncture portion that can pierce the seal portion 42 of the drug container 4. 102a. Then, the outer cylinder side puncture portion 102b is fixed to the main body portion 60a of the outer cylinder connection member 6a so that the sealing member mounting portion 101 protrudes into the sealing member mounting portion 101 and the drug container side puncture portion 102a is on the base end side of the predetermined length. ing. Further, as shown in FIG. 14, the outer cylinder side puncture portion 102b of the hollow needle-like portion 102 is attached to the sealing member mounting portion 101 by attaching the outer cylinder 3a mounted on the sealing member 7a, thereby The seal member 74a is pierced.

In all the above-described embodiments, the hollow needle-like portion 61 (specifically, the puncture portion 61a) of the outer cylinder connecting member 6 penetrates the seal portion 42 of the drug container 4, and the inside of the outer cylinder 3 and the drug container 4 The locking portion 22 that suppresses the movement of the outer cylinder connecting member 6 that is in communication with the inside toward the distal end side of the adapter main body 21 may be as shown in FIG. 11.
The locking portion of this embodiment is formed by a flexible claw 48 having a free end extending into the adapter main body 21 on the proximal end side of the adapter main body 21. Further, a portion of the flexible claw 48 other than the fixing portion with the adapter main body 21 is a notch 49. Then, the outer cylinder connecting member 6 that has moved in the proximal direction in the adapter main body 21 passes through the flexible claw 48 by pushing and spreading the flexible claw 48, and after passing, the flexible claw is restored. By moving into the adapter body 21, the movement of the outer tube connecting member 6 toward the distal end side of the adapter body 21 is suppressed.

In all the embodiments described above, the outer cylinder connecting member may be as shown in FIG.
In this embodiment, the outer cylinder connecting member 6b is provided in the hollow needle-like portion 61 and cannot communicate with the inside of the outer cylinder 3 connected to the outer cylinder connecting member 6b, and the drug container 4 of the hollow needle-like portion 61 is provided. By piercing the seal portion 42, there is an air flow passage for enabling communication between the inside of the drug container 4 and the outside air, and a bacteria-impermeable air-permeable filter is provided in the air flow passage. It has become a thing.
In the structure shown in FIG. 12, the hollow needle-like portion 61 includes an outer tube 65, and an air circulation passage is formed between the hollow needle-like portion 61 and the outer tube 65. In addition, at the base end 68 of the outer pipe 65, the air circulation passage is closed and does not communicate with the inside of the connected outer cylinder. The outer cylinder connecting member main body is provided with a passage 67 that forms a part of the air flow passage, and one end of the passage 67 is provided with an air flow in the outer tube by an opening formed in the side wall of the outer tube 65. It communicates with the road. Further, at the other end of the passage 67, a bacteria-impermeable air-permeable filter 66 is provided. Therefore, the outer cylinder connecting member 6b of this embodiment passes through the outer surface of the hollow needle-like portion 61 and the passage 67 of the outer cylinder connecting member main body from the tip of the outer tube 65 to the germ-impermeable air-permeable filter 66. It has a flow passage. By providing such an air flow passage, the re-suction operation of the medicine-dissolved medical liquid into the outer cylinder 3 becomes easy.

Next, the operation of the drug administration device of the present invention will be described with reference to FIGS. 1 and 15 to 19.
As shown in FIG. 1, the drug administration device 1 is provided as a set with the adapter 2 mounted on the drug container 4 and the drug-stored outer cylinder 3 mounted on the nozzle portion with the sealing member 7. The
Then, as shown in FIG. 15, after removing the sealing member 7 of the medicine-accommodated outer cylinder 3, the nozzle part of the outer cylinder 3 is inserted into the nozzle mounting part 62 of the outer cylinder connection member 6 of the adapter 2 and rotated. It is made to attach by doing. And as shown in FIG. 16, the outer cylinder 3 is pushed and the outer cylinder connecting member 6 with which the outer cylinder was mounted is moved in the adapter main body 21 in the base end direction. Then, the outer cylinder connecting member 6 that has passed over the locking portion (rib) comes into contact with and presses the disengagement protrusion 54. The disengagement protrusion 54 pressed by the outer tube connecting member 6 is deformed from the state shown in FIG. 6 to the state shown in FIG. 7, and the engagement rib of the disengagement protrusion 54 of the plunger 5 and the adapter body The engagement with the opening 25 provided on the side wall 21 is released. Thus, by pulling out the plunger 5, it can be detached from the adapter 2 as shown in FIG.
In this state, the puncture portion 61a of the hollow needle-like portion 61 of the outer tube connecting member 6 penetrates the seal portion 42 of the drug container 4, and the tip thereof reaches the drug container. In this embodiment, since the inside of the drug container 4 is depressurized, the medical liquid 38 in the outer cylinder 3 is sucked into the drug container 4 and the gasket 8 also moves. When the inside of the medicine container 4 is not depressurized, the detached plunger is connected to the outer cylinder 3 and pressed to thereby bring the medical liquid 38 (dissolved solution) in the outer cylinder 3 into the medicine container. Let it flow. FIG. 17 shows the state.
Then, after appropriately performing the mixing operation, the drug-dissolved liquid 46 in the drug container is drawn by pulling the plunger 5 connected to the outer cylinder 3 with the drug container 4 facing upward as shown in FIG. Then, it is collected in the outer cylinder 3. Then, as shown in FIG. 19, the preparation for administration is completed by detaching the outer cylinder 3 from the outer cylinder connecting member 6.

DESCRIPTION OF SYMBOLS 1 Drug administration tool 2 Adapter 3 Outer cylinder which stored medical liquid 4 Drug container 5 Plunger 6 Outer cylinder connection member 7 Sealing member 8 Gasket

Claims (8)

An outer cylinder having a nozzle portion provided at a distal end portion, a sealing member that seals the nozzle portion and is detachable or puncturable, and is slidably accommodated in the outer cylinder, and is fitted with a plunger. Comprising a gasket having a portion, a medical liquid filled in the outer tube, and a medical liquid-containing outer tube not fitted with a plunger, a container body having an opening, and the opening. A medicine administration device comprising a seal part to be sealed, a medicine container made of medicine stored in the container body, and an adapter connectable to the opening of the medicine container,
The adapter has a cylindrical adapter main body having a drug container connecting portion at a base end, is movable in the base end direction from the distal end side in the adapter main body, and the nozzle portion of the outer cylinder is placed in the nozzle portion. A nozzle mounting part that can be mounted in a communicating state or an outer cylinder side puncture part that can pierce the sealing member of the outer cylinder, and a drug container side puncture part that can pierce the seal part of the drug container; An outer cylinder connecting member having a hollow needle-shaped portion, and a plunger that is attached to the adapter and that can be attached to the plunger attaching portion of the gasket after being detached.
The adapter main body and the plunger include an engagement mechanism that prevents the plunger from being detached from the adapter main body, the engagement mechanism protrudes into the adapter main body, and the outer cylinder connecting member can come into contact with the adapter main body and the plunger. The engagement is released by pressing by the outer cylinder connecting member, and includes a disengagement protrusion that allows the plunger to be detached from the adapter.
The disengagement projecting portion is connected to the outer cylinder when the hollow needle-like portion penetrates the seal portion of the drug container and the inside of the outer cylinder and the inside of the drug container are in communication with each other. A drug administration device, wherein the drug administration device is disposed at a position in contact with a member. An outer cylinder having a nozzle portion provided at a distal end portion, a sealing member that seals the nozzle portion and is detachable or puncturable, and is slidably accommodated in the outer cylinder, and is fitted with a plunger. Comprising a gasket having a portion, a medical liquid filled in the outer tube, and a medical liquid-containing outer tube not fitted with a plunger, a container body having an opening, and the opening. A medicine administration device comprising a seal part to be sealed, a medicine container made of medicine stored in the container body, and an adapter connectable to the opening of the medicine container,
The adapter has a cylindrical adapter main body having a drug container connecting portion at a base end, is movable in the base end direction from the distal end side in the adapter main body, and the nozzle portion of the outer cylinder is placed in the nozzle portion. A nozzle mounting part that can be mounted in a communicating state or an outer cylinder side puncture part that can pierce the sealing member of the outer cylinder, and a drug container side puncture part that can pierce the seal part of the drug container; An outer cylinder connecting member having a hollow needle-shaped portion, and a plunger that is attached to the adapter and that can be attached to the plunger attaching portion of the gasket after being detached.
Further, the adapter has an engaged portion that can be engaged with an engaging portion provided on the plunger, and the engaging portion of the plunger and the engaged portion of the adapter are the outer cylinder connecting member. The drug container side puncture portion maintains the engaged state at the unpunctured position to the seal portion of the drug container, and the drug container side puncture portion of the outer cylinder connecting member completes the puncture to the seal portion of the drug container A drug administration device comprising an engagement mechanism that is disengaged by moving to a position. The adapter body includes the hollow needle-like portion of the outer cylinder connecting member that pierces the seal portion of the drug container, and the outer cylinder connecting member that is in communication with the outer cylinder and the drug container. The drug administration device according to claim 1, further comprising a locking portion that suppresses movement of the adapter body toward the distal end side. The outer cylinder connection member includes an engagement release portion, and the engagement mechanism is disengaged when the engagement release portion abuts on an engagement release auxiliary portion provided on the plunger. The drug administration device according to claim 2 or 3. 5. The adapter according to claim 2, wherein the adapter has a guide portion for guiding the outer tube connecting member from a non-piercing position to a seal portion of the medicine container to a piercing completion position. 6. Drug administration device. The adapter body includes guide ribs or guide grooves extending in a predetermined length parallel to a central axis provided on an inner surface of the adapter body, and the outer surface of the outer cylinder connecting member is provided for the guide of the adapter body. The drug administration device according to any one of claims 1 to 4, wherein a guide groove or a guide rib corresponding to the rib or the guide groove is provided. The outer cylinder connecting member is provided in the hollow needle-shaped portion and cannot communicate with the inside of the outer cylinder connected to the outer cylinder connecting member, and the seal portion of the drug container of the hollow needle-shaped portion 7. An air flow passage for enabling communication between the inside of the medicine container and outside air by piercing, and a bacteria-impermeable air-permeable filter is provided in the air flow passage. The drug administration device according to any one of the above. The drug administration device according to any one of claims 1 to 7, wherein the adapter is attached to the drug container.

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