WO2020195362A1

WO2020195362A1 - Medicine administering device

Info

Publication number: WO2020195362A1
Application number: PCT/JP2020/006453
Authority: WO
Inventors: 小川淳一; 小林正彦
Original assignee: テルモ株式会社
Priority date: 2019-03-26
Filing date: 2020-02-19
Publication date: 2020-10-01
Also published as: JPWO2020195362A1; JP7307790B2

Abstract

A medicine administering device (10) includes: a case body (12) which has an accommodation space (12a) therein; a syringe (18) which has a body part (19) that is accommodated in the accommodation space (12a), and which has a medicine discharge part (20) that protrudes from the case body (12); a cylindrical adaptor (22) which is mounted on an outer side of the medicine discharge part (20); a connection member (24) which has a mating recess that accommodates the medicine discharge part (20), and which is connected to the medicine discharge part (20); a support member (13) which integrally extends from the case body (12) and covers the lower part of the medicine discharge part (20), the adaptor (22), and the connection member (24); and a lid member (14) which covers the upper part of the support member (13) and has a pinching structure that pinches and presses the adaptor (22) and the connection member (24).

Description

Drug administration device

The present invention relates to a drug administration device that administers a drug to a patient.

Conventionally, a drug administration device that is worn on a patient's body to administer a liquid drug has been known. For example, Japanese Patent Application Laid-Open No. 2018-0892924 discloses a drug administration device in which a syringe and an actuator for operating a plunger thereof are housed inside the housing. In this drug administration device, the drug is delivered to the needle tube punctured subcutaneously of the patient via a tube attached to the drug discharge part (tip) of the syringe.

By the way, in a drug administration device, in order to increase the pressure resistance of the drug discharge part of a syringe, an adapter is provided on the outer peripheral portion of the drug discharge part at the tip of the syringe, and a tube with a connector is connected to the adapter by screwing. Can be considered.

However, when fixing with a screw mechanism, the screw may gradually loosen during use. Therefore, it is necessary for the patient to regularly manage the tightening condition between the connector and the adapter, which is complicated.

In addition, the load input from the outside via the connector and the adapter can be easily concentrated on the drug discharge part that has been reduced in diameter from the syringe. Therefore, for example, there is a problem that the drug discharging portion is easily broken when a shocking load such as dropping is applied.

Therefore, a drug administration device that eliminates the need for complicated tightening management of the screw mechanism and can prevent damage to the drug discharge portion is desired.

One aspect of the following disclosure is to include a case main body having a storage space inside, a tubular main body portion, and a drug discharge portion whose diameter is reduced and protrudes toward the tip end side of the main body portion, and the main body portion is said to be the same. A syringe that is housed in the storage space of the case body and the drug discharge part protrudes from the case body, an adapter that is formed in a tubular shape and is attached to the outside of the drug discharge part, and the drug discharge part are housed. A connecting member having a fitting recess to be fitted and connected to the drug discharging portion, and a support member integrally extending from the case body and covering the lower part of the drug discharging portion, the adapter, and the connecting member. A lid member having a holding structure that covers the upper part of the drug discharging portion, the adapter, and the connecting member by being mounted above the supporting member, and sandwiches and presses the adapter and the connecting member. Is in the drug administration device.

According to the drug administration device from the above viewpoint, it is not necessary to manage the tightening of the screw mechanism, and it is possible to prevent the drug discharge part (tip part) from being damaged.

It is a perspective view which shows the drug administration apparatus which concerns on embodiment in the state at the time of use. It is an exploded perspective view which removed the lid member of the drug administration apparatus of FIG. 3A is an enlarged cross-sectional view of the syringe and the adapter of FIG. 2, and FIG. 3B is an enlarged cross-sectional view of the connecting member of FIG. It is a perspective view of the state in which the cap is attached to the adapter in the drug administration apparatus of embodiment. It is a perspective view which shows with the cap of the drug administration apparatus of FIG. 4 removed. It is sectional drawing of the drug administration apparatus of FIG. It is a perspective view which shows the internal structure by cutting out a part of the side wall of the drug administration apparatus of FIG. It is sectional drawing which shows the example which connects the connecting member which does not have a screw mechanism to the drug administration apparatus of FIG.

Hereinafter, preferred embodiments of the present invention will be mentioned and described in detail with reference to the accompanying drawings. The dimensional ratios in the drawings may be exaggerated and differ from the actual ratios for convenience of explanation. Further, in the following description, the direction in which the drug discharging portion 20 protrudes from the syringe 18 is referred to as "tip side", and the opposite side is referred to as "base end side".

As shown in FIG. 1, the drug administration device 10 according to the embodiment includes a flat box-shaped housing 11, and a syringe 18 (see FIG. 2) containing a drug (liquid) is incorporated therein. ing. In the drug administration device 10, a tube 16 communicating with the syringe 18 extends from the housing 11 in the used state. A needle tube (not shown) punctured into the patient's skin is connected to the tip of the tube 16 so that the drug can be administered to the patient via the tube 16. Such a drug administration device 10 is used for attaching the housing 11 to the patient's body or the like and continuously or intermittently administering the drug to the patient.

The details of the drug administration device 10 will be described below.

The housing 11 of the drug administration device 10 is arranged so as to cover the case main body 12 provided on the proximal end side, the support member 13 extending from the case main body 12 to the distal end side, and the upper part of the support member 13. It includes a lid member 14. A storage space 12a is provided inside the case body 12, and the syringe 18 (see FIG. 2) and an actuator (not shown) for operating the plunger of the syringe 18 are housed in the storage space 12a.

As shown in FIG. 2, the lid member 14 is attached to the support member 13 via the connecting portion 14h and the hinge portion 13d. The lid member 14 is configured to be rotatable around the hinge portion 13d, and can be closed so as to cover the upper part of the support member 13 as shown in FIG. The inside of the portion covered by the support member 13 and the lid member 14 is a connecting member accommodating chamber 13f. A first notch 13e is provided on the tip side of the support member 13, a second notch 14g is provided on the tip side of the lid member 14, and the tube 16 is provided through the first notch 13e and the second notch 14g. Is configured to extend to the outside of the housing 11.

Further, the support member 13 is provided with the first lock piece 13i, and the lid member 14 is provided with the second lock piece 14i. By engaging the first lock piece 13i and the second lock piece 14i, the lid member 14 is fixed in a closed state covering the support member 13. Further, when the first lock piece 13i and the second lock piece 14i are disengaged, the lid member 14 can rotate about the hinge portion 13d, and as shown in FIG. 2, the lid member 14 can be opened. It is configured as follows.

As shown in FIG. 2, the case body 12 is formed in a box shape so as to cover the periphery of the storage space 12a. A partition wall 12c is provided on the tip end side of the case body 12, and the storage space 12a and the connecting member storage chamber 13f are partitioned by the partition wall 12c. The partition wall 12c is provided with a circular opening 12b for passing the tip end side of the main body 19 of the syringe 18 through the connecting member accommodating chamber 13f. The tip end side of the main body 19 of the syringe 18 projects into the connecting member accommodating chamber 13f through the opening 12b. A drug discharge section 20 for discharging the drug and an adapter 22 are provided on the tip end side of the syringe 18. A tube 16 is connected to the drug discharging section 20 and the adapter 22 via a connecting member 24 (connector).

Here, the syringe 18 and the connecting member 24 will be described with reference to FIGS. 3A and 3B. As shown in FIG. 3A, the syringe 18 includes a main body 19 formed in a substantially cylindrical shape on the proximal end side. A drug storage chamber 18a for storing a drug is formed inside the main body 19. On the tip end side of the main body portion 19, a drug discharge portion 20 having a diameter smaller than that of the main body portion 19 and projecting toward the tip end side is provided.

The drug discharging portion 20 includes a tubular portion 20a extending from the base end 20d toward the tip end side with a constant diameter, and a tapered portion 20b extending from the tip end side of the tubular portion 20a. The tapered portion 20b is formed in a tapered shape in which the diameter gradually decreases toward the tip. At the boundary between the tubular portion 20a and the tapered portion 20b, a retaining projection 20e protruding outward in the radial direction is formed. A flow path 20c is formed in the central portion of the drug discharging portion 20 so as to penetrate in the axial direction. The flow path 20c communicates with the drug accommodating chamber 18a on the proximal end side and is open at the distal end 20f of the tapered portion 20b.

An adapter 22 is attached to the tubular portion 20a of the drug discharging portion 20. The adapter 22 is configured to include a cylindrical body 26 formed in a cylindrical shape and a base end portion 32 whose diameter is reduced inward in the radial direction on the base end side of the tubular body 26. An insertion hole 32a having an inner diameter substantially the same as the outer diameter of the tubular portion 20a is formed on the inner peripheral side of the base end portion 32. A tubular portion 20a is inserted into the insertion hole 32a. The adapter 22 is configured to be movable in the axial direction between the base end 20d and the retaining projection 20e through the insertion hole 32a.

When the adapter 22 is moved to the vicinity of the base end 20d, the tapered portion 20b protrudes long, and the chemical solution tube or the like can be directly attached to the tapered portion 20b without going through the adapter 22. The inner diameter of the insertion hole 32a of the adapter 22 is formed to be smaller than the outer diameter of the retaining protrusion 20e, and the movement of the adapter 22 toward the tip end is blocked by the retaining protrusion 20e.

A connecting member accommodating portion 28 is formed inside the tubular body 26. The connecting member accommodating portion 28 is formed so as to be separated from the outside of the drug discharging portion 20, and is configured to be able to accommodate the adapter mounting portion 36 (see FIG. 3B) of the connecting member 24. The connecting member accommodating portion 28 is formed so that the first screw thread 30 forming a part of the screw mechanism 35 projects inward. Further, a plurality of lock protrusions 34 for preventing loosening of the screw mechanism 35 are provided at the tip of the tubular body 26 at intervals in the circumferential direction.

As shown in FIG. 3B, the connecting member 24 has an adapter mounting portion 36 to be inserted into the adapter 22, a tube mounting portion 40 formed on the tip end side of the adapter mounting portion 36 and to which the tube 16 is mounted, and an adapter mounting portion. A flange portion 38 provided near the boundary between the 36 and the tube mounting portion 40 is provided. The adapter mounting portion 36 is formed in a substantially cylindrical shape. The outer diameter of the adapter mounting portion 36 is formed to be an outer diameter that can be inserted into the connecting member accommodating portion 28 of the adapter 22. A second thread 36e that can be engaged with the first thread 30 is formed on the outer peripheral surface 36b of the adapter mounting portion 36. The second thread 36e constitutes another part of the screw mechanism 35. Further, a fitting recess 36a for accommodating and fitting the tapered portion 20b is formed in the central portion of the adapter mounting portion 36. The fitting recess 36a is formed in a tapered shape in which the inner diameter gradually decreases toward the tip side, corresponding to the tapered shape of the tapered portion 20b.

A partition wall 36c is provided on the tip end side of the fitting recess 36a with which the tip end portion 20f of the tapered portion 20b abuts. A communication hole 36d is formed in the central portion of the partition wall 36c. The communication hole 36d communicates with the fitting recess 36a and the accommodating recess 40a of the tube mounting portion 40.

The tube mounting portion 40 is a cylindrical member formed to have substantially the same outer diameter as the outer diameter of the adapter mounting portion 36, and is integrally formed with the adapter mounting portion 36 and extends to the tip side. An accommodating recess 40a for accommodating the tube 16 is formed inside the tube mounting portion 40. The end portion 16a of the tube 16 is inserted into the accommodating recess 40a up to the vicinity of the partition wall 36c. A reinforcing member 44 that reinforces the tube 16 and exhibits a sealing property is attached to the outer peripheral portion of the tube 16 in the vicinity of the end portion 16a. Further, a sealing member 42 made of an elastic material or the like is attached to the outer peripheral portion of the reinforcing member 44. The tube 16 is inserted and fixed in the accommodating recess 40a via the sealing member 42 and the reinforcing member 44. The flow path 16b of the tube 16 communicates with the fitting recess 36a through the communication hole 36d.

The flange portion 38 is a portion formed by expanding the diameter in the outer peripheral direction from the vicinity of the boundary between the adapter mounting portion 36 and the tube mounting portion 40. The flange portion 38 is formed in a disk shape, and the outer diameter is formed to be larger than the outer diameter of the adapter mounting portion 36 and the tube mounting portion 40.

The connecting member 24 can be made of, for example, a synthetic resin such as polyethylene, polypropylene, polycarbonate, polystyrene, or acrylic.

Further, the syringe 18 and the adapter 22 can be made of a cyclic polyolefin copolymer (COC) or a cyclic olefin polymer (COP) having excellent transparency and heat resistance. However, the cyclic polyolefin copolymer or the cyclic olefin polymer is easily cracked when a shocking load is applied, and when the connecting member 24 is dropped, the load is concentrated near the proximal end 20d of the drug discharging portion 20. And it becomes easy to break. Therefore, in the drug administration device 10 of the present embodiment, in order to prevent the load from being concentrated on the drug discharge unit 20, a support member 13 and a lid member 14 are provided on the tip end side of the case body 12 to support the connection member 24. It is configured. Hereinafter, the support member 13 and the lid member 14 will be described. The adapter 22 can be made of a material different from that of the syringe 18, for example, a synthetic resin such as polyethylene, polypropylene, polycarbonate, polystyrene, or acrylic.

As shown in FIG. 2, the support member 13 includes a flat bottom portion 13a extending flush with the bottom portion 12d of the case body 12, and a first side wall 13b formed so as to rise upward from the peripheral edge portion of the bottom portion 13a. I have. The bottom portion 13a is formed in a rectangular shape in a plan view. A first lock piece 13i is provided on the first side of the first side wall 13b. A hinge portion 13d is provided on the second side of the first side wall 13b.

From the bottom 13a, the support plate 13c and the rib 13h are formed so as to project upward. The support plate 13c is formed so as to project from the bottom portion 13a of the portion of the connecting member 24 corresponding to the flange portion 38. The upper end portion of the support plate 13c is formed of a curved surface cut out in an arc shape so as to make surface contact with the outer peripheral portion of the flange portion 38. The support plate 13c is configured to support the flange portion 38 from below so that the impact load input to the connecting member 24 is released to the bottom portion 13a side.

The rib 13h is formed so as to extend in a direction parallel to the axial direction of the syringe 18 in order to increase the rigidity of the support member 13.

The lid member 14 includes a top plate 14a having a substantially rectangular shape in a plan view, and a second side wall 14f extending downward from the peripheral edge of the top plate 14a. The outer surface of the top plate 14a is configured to be flush with the upper surface of the case body 12 when the lid member 14 is closed. A second lock piece 14i is formed at the first lateral end of the second side wall 14f. Further, a connecting portion 14h connected to the hinge portion 13d is provided at the second lateral end of the second side wall 14f. The connecting portion 14h is provided with a shaft hole that communicates with the hinge portion 13d. By inserting a shaft (not shown) into the shaft hole, the connecting portion 14h is rotatably connected to the hinge portion 13d.

Further, on the tip end side of the second side wall 14f, a second notch 14g for passing the tube 16 is formed in a U shape. The second side wall 14f is formed to have a larger protrusion length in the height direction than the first side wall 13b. When the lid member 14 is closed, the lower end portion of the second side wall 14f and the upper end portion of the first side wall 13b come into contact with each other to partition the connecting member accommodating chamber 13f.

Inside the top plate 14a, there are a first pressing plate 14b and a second pressing plate 14c for pressing the connecting member 24 and the adapter 22, and a first side plate 14d and a first side plate 14d for preventing lateral displacement of the connecting member 24. The two side plates 14e are formed so as to project downward. The first pressing plate 14b is formed so as to extend in a direction (width direction) substantially perpendicular to the axial direction of the syringe 18, and is formed at a position capable of contacting the tip end side of the flange portion 38 of the connecting member 24. ing.

A semicircular notch 14b2 for passing the tube mounting portion 40 of the connecting member 24 is formed in the central portion of the first pressing plate 14b. Further, a contact surface 14b1 that comes into contact with the flange portion 38 is formed on the base end side of the first pressing plate 14b. The contact surface 14b1 is configured as an inclined surface that projects toward the second pressing plate 14c side (base end side) as it approaches the top plate 14a. That is, when the first pressing plate 14b is pushed into the flange portion 38, a force for urging the flange portion 38 toward the proximal end side is generated. Instead of using the contact surface 14b1 as an inclined surface, an inclined surface may be provided on the flange portion 38 or the second pressing plate 14c. Further, when sufficient assembly accuracy can be obtained, an urging force for pressing the connecting member 24 can be generated without providing an inclined surface on the contact surface 14b1.

The second pressing plate 14c is formed at a position where it can come into contact with the base end portion 32 of the adapter 22. The second pressing plate 14c is formed in a direction parallel to the first pressing plate 14b. The second pressing plate 14c is arranged at a predetermined distance from the first pressing plate 14b. This distance is formed to be equal to or slightly narrower than the distance from the tip end side surface of the flange portion 38 to the base end portion 32 of the adapter 22 when the adapter 22 is tightened to the connecting member 24. .. That is, when the first pressing plate 14b and the second pressing plate 14c are pushed into the connecting member 24 and the adapter 22, the connecting member 24 and the adapter 22 are sandwiched by the first pressing plate 14b and the second pressing plate 14c and pressed in the axial direction. It is configured to be in the state of. The first pressing plate 14b and the second pressing plate 14c form a sandwiching structure 17 that sandwiches the adapter 22 and the connecting member 24.

The first side plate 14d is provided at a position where it comes into contact with the flange portion 38 of the connecting member 24 from the second side. Further, the second side plate 14e is provided at a position where it comes into contact with the flange portion 38 of the connecting member 24 from the first side. The first side plate 14d and the second side plate 14e are configured to prevent the connecting member 24 from moving laterally by sandwiching the connecting member 24 from the side.

The first pressing plate 14b, the second pressing plate 14c, the first side plate 14d, and the second side plate 14e are integrally formed, and are configured to increase the rigidity of the lid member 14 by reinforcing each other. Has been done.

The drug administration device 10 of the present embodiment is configured as described above, and its action and usage will be described below with reference to FIGS. 4 to 7.

As shown in FIG. 4, the drug administration device 10 is provided as a product with the cap 48 attached to the adapter 22 of the syringe 18. The inside of the syringe 18 is filled with a predetermined amount of a drug. The cap 48 is joined to the adapter 22 by a screw mechanism (see FIG. 5), and seals the flow path 20c of the drug discharge portion 20 of the syringe 18. The cap 48 is fixed by a lock protrusion 34 (see FIG. 3A) at the tip of the adapter 22 so as not to loosen due to vibration during transportation or the like.

When using, first take out the drug administration device 10 from the package and open the lid member 14 as shown to expose the cap 48. Then, one or both of the cap 48 and the adapter 22 are rotated to remove the cap 48 as shown in FIG. As a result, the tapered portion 20b of the drug discharging portion 20 of the syringe 18 is exposed.

Next, as shown in FIG. 2, the connecting member 24 is inserted into the adapter 22, and both or one of the connecting member 24 and the adapter 22 is rotated and connected via the screw mechanism 35 (see FIGS. 3A and 3B). The member 24 is attached to the adapter 22. After that, as shown in FIG. 1, the lid member 14 is closed, the first lock piece 13i and the second lock piece 14i are engaged with each other, and the lid member 14 is locked.

As shown in FIG. 7, by closing the lid member 14, the first pressing plate 14b and the second pressing plate 14c are pushed into the connecting member 24 and the adapter 22. As a result, the flange portion 38 of the connecting member 24 is pressed toward the syringe 18 by the first pressing plate 14b, and the connecting member 24 is held in a state of being pressed against the adapter 22 supported by the second pressing plate 14c. In this case, as shown in FIG. 3A, the insertion hole 32a of the adapter 22 abuts the retaining protrusion 20e from the base end side to support the drug discharging section 20, so that the tapered portion 20b of the drug discharging section 20 is connected to the connecting member. It comes into close contact with the fitting recess 36a of 24.

As a result, as shown in FIG. 6, the connecting member 24 is in close contact with the drug discharge portion 20 of the syringe 18, and the flow path 16b of the tube 16 communicates with the drug storage chamber 18a of the syringe 18. Further, since the connecting member 24 and the adapter 22 are kept pressed, the screw mechanism 35 for joining the connecting member 24 and the adapter 22 is loosened even when a load due to vibration or the like is applied during use. Can be blocked. Therefore, the screw mechanism 35 can be continuously used for a long time without requiring complicated operations such as management.

Further, the flange portion 38 of the connecting member 24 is supported from below by the support plate 13c, and the top plate 14a of the lid member 14 prevents the upward displacement. Further, a first side plate 14d and a second side plate 14e are provided on the side of the flange portion 38. As a result, even when a shocking load is applied to the connecting member 24 by dropping the drug administration device 10, the load is distributed to the support member 13 and the lid member 14 via the flange portion 38. Can be done. As a result, it is possible to prevent the load from being concentrated on the drug discharging section 20, and it is possible to prevent the drug discharging section 20 from being damaged.

In the above description, an example of joining the connecting member 24 to the adapter 22 by the screw mechanism 35 has been shown, but the present embodiment is not limited to this. As shown in FIG. 8, the drug administration device 10 may attach a connecting member 24A having no screw mechanism 35 to the adapter 22.

Such a connecting member 24A includes an adapter mounting portion 36A in which a screw thread (screw mechanism) is not formed. When the adapter mounting portion 36A is inserted into the adapter 22 and the lid member 14 is closed, the connecting member 24A and the adapter 22 are sandwiched between the first pressing plate 14b and the second pressing plate 14c. Due to the urging force generated between the first pressing plate 14b and the second pressing plate 14c, the connecting member 24A can be brought into close contact with the drug discharging portion 20 of the syringe 18 even when there is no screw mechanism. As described above, the drug administration device 10 can be used by connecting a plurality of types of connecting

members

24 and 24A without changing the structure.

The drug administration device 10 of the present embodiment has the following effects.

The drug administration device 10 includes a case main body 12 having a storage space 12a inside, a tubular main body portion 19, and a drug discharge portion 20 whose diameter is reduced and protrudes toward the tip end side of the main body portion 19. The unit 19 is housed in the storage space 12a of the case body 12, and the drug discharge unit 20 is a syringe 18 protruding from the case body 12, and an adapter 22 formed in a tubular shape and attached to the outside of the drug discharge unit 20. A connecting member 24 having a fitting recess 36a for accommodating the drug discharging section 20 and being connected to the drug discharging section 20, and a connecting member 24 extending integrally from the case body 12, the drug discharging section 20, the adapter 22 and the connecting member 24 By mounting the support member 13 that covers the lower part of the support member 13 and the support member 13 above the support member 13, the support member 13 covers the upper part of the drug discharge portion 20, the adapter 22, and the connection member 24, and the adapter 22 and the connection member 24 are sandwiched and pressed. A lid member 14 having a sandwiching structure 17 is provided.

By sandwiching and pressing the adapter 22 and the connecting member 24 with the sandwiching structure 17 in this way, the drug administration device 10 can be used for a long time without performing complicated operations such as managing the tightness of the screw mechanism. Can be done.

In the above-mentioned drug administration device 10, the sandwiching structure 17 of the lid member 14 extends from above the connecting member 24 and abuts on the tip end side of the connecting member 24 to press the connecting member 24 toward the syringe 18. A pressing plate 14b may be provided, and a second pressing plate 14c that extends from above the adapter 22 and abuts on the proximal end side of the adapter 22 to support the adapter 22 from the proximal end side. With such a configuration, by closing the lid member 14, the connecting member 24 and the adapter 22 can be sandwiched and pressed between the first pressing plate 14b and the second pressing plate 14c, and the drug can be administered with a simple operation. The device 10 can be used.

In the above-mentioned drug administration device 10, the contact surface 14b1 that comes into contact with the connecting member 24 of the first pressing plate 14b may be formed of an inclined surface. According to this configuration, the urging force that presses the connecting member 24 toward the syringe 18 can be reliably applied.

In the drug administration device 10 described above, the support member 13 may include a support plate 13c that extends toward the connection member 24 and supports the connection member 24. As a result, even when a shocking load is applied to the connecting member 24, the load can be distributed to the support plate 13c, and the load can be prevented from being concentrated on the drug discharging portion 20 of the syringe 18.

In the drug administration device 10 described above, the adapter 22 and the connecting member 24 may be joined by the screw mechanism 35 and may be sandwiched by the first pressing plate 14b and the second pressing plate 14c. With such a configuration, it is possible to prevent the screw mechanism 35 from loosening.

In the drug administration device 10 described above, the connecting member 24 has an adapter mounting portion 36A in which a screw mechanism is not formed, and a flange portion 38 formed by expanding the diameter of the adapter mounting portion 36A to the outside. The first pressing plate 14b may be configured to come into close contact with the connecting member 24 and the drug discharging portion 20 by abutting and pressing the flange portion 38.

In the drug administration device 10 described above, the lid member 14 may be rotatably attached to the support member 13 around the hinge portion 13d provided on the support member 13. As a result, the device configuration is simplified, and the drug administration device 10 can be used with a simple operation.

In the drug administration device 10, the lid member 14 is a pair of side support plates (first side plate 14d, second side plate) that abut on both sides of the connecting member 24 and prevent the connecting member 24 from moving laterally. 14e) may be provided. As a result, even when an impact load is applied to the connecting member 24, it is possible to prevent the load from being concentrated on the drug discharging unit 20.

In the drug administration device 10 described above, a cycloolefin polymer resin can be used for the syringe 18. According to the drug administration device 10 of the present embodiment, even if the syringe 18 uses a cycloolefin polymer resin, the drug discharge unit 20 can be prevented from being damaged.

In the above, the drug administration device has been described with reference to suitable embodiments, but the drug administration device is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention. Needless to say.

Claims

The case body with a storage space inside and
A tubular main body and a drug discharge section that is reduced in diameter and protrudes toward the tip end side of the main body are provided, the main body is housed in the storage space of the case body, and the drug discharge section is the case body. With a syringe protruding from
An adapter that is formed in a tubular shape and is attached to the outside of the drug discharge section,
A connecting member having a fitting recess for accommodating the drug discharging portion and connected to the drug discharging portion,
A support member that integrally extends from the case body and covers the lower part of the drug discharging portion, the adapter, and the connecting member.
A lid member having a holding structure that covers the upper part of the drug discharging portion, the adapter, and the connecting member by being mounted above the supporting member, and also sandwiches and presses the adapter and the connecting member. To prepare
Drug administration device.
The drug administration device according to claim 1, wherein the holding structure of the lid member extends from above the connecting member and abuts on the tip end side of the connecting member to press the connecting member toward the syringe. A drug administration device comprising a first pressing plate extending from above the adapter and a second pressing plate extending from above the adapter to support the adapter from the proximal end side by abutting against the proximal end side of the adapter.
The drug administration device according to claim 2, wherein the surface of the first pressing plate that comes into contact with the connection member is an inclined surface.
The drug administration device according to any one of claims 1 to 3, wherein the support member includes a support plate that extends toward the connection member and supports the connection member.
The drug administration device according to claim 2 or 3, wherein the adapter and the connection member are joined by a screw mechanism and sandwiched between the first pressing plate and the second pressing plate.
The drug administration device according to claim 2 or 3, wherein the connecting member includes an adapter mounting portion on which a screw mechanism is not formed, a flange portion formed by expanding the diameter to the outside of the adapter mounting portion, and the like. A drug administration device that brings the connecting member into close contact with the drug discharging portion by pressing the first pressing plate in contact with the flange portion.
The drug administration device according to any one of claims 1 to 6, wherein the lid member is rotatably attached to the support member about a hinge portion provided on the support member. Drug administration device.
The drug administration device according to any one of claims 1 to 7, wherein the lid member abuts on both sides of the connecting member to prevent the connecting member from moving laterally. A drug administration device equipped with a support plate.
The drug administration device according to any one of claims 1 to 8, wherein the syringe is made of a cycloolefin polymer resin.