JP6832076B2 - Syringe aid - Google Patents

Description

The present invention relates to a syringe aid that is attached to a syringe and used when performing self-injection.

Traditionally, self-injection has been performed in which a patient administers an injection to himself / herself using a syringe. The syringe used for self-injection is attached to the syringe body so as to cover the syringe body having a tubular barrel filled with an injection and an injection needle provided at one end in the axial direction of the barrel, and the injection needle. It has a cap that is used.

When self-injecting using the syringe, the patient removes the cap from the syringe body to expose the needle and punctures the human body with the needle at an appropriate puncture depth. However, it is difficult to adjust the puncture depth of the injection needle, and it may be difficult to remove the cap from the syringe body depending on the patient's condition.

Therefore, syringe aids are provided to enable patients to easily and appropriately self-inject.

Such a syringe assisting tool includes a main body in which a syringe is arranged, a cover portion that can be opened and closed with respect to the main body, and a removal mechanism portion for removing a cap from the syringe main body (see, for example, Patent Document 1). ).

The main body is configured so that the injection needle of the arranged syringe main body protrudes to the outside corresponding to an appropriate puncture depth.

The cover portion is rotatably connected to the main body, and is configured to switch between a closed state in which the main body is covered and an open state in which the main body is opened as the cover is rotated.

The removal mechanism portion is configured to remove the cap from the syringe body in conjunction with the switching from the open state to the closed state of the cover portion.

When self-injecting with the syringe aid, the patient places the syringe in the body and then rotates the cover to switch to the closed state. Along with this, the syringe is fixed between the main body and the cover portion, and the cap is removed from the syringe main body by the removing member. Then, the patient performs self-injection by puncturing himself with an injection needle protruding from the main body.

Japanese Unexamined Patent Publication No. 2014-36879

By the way, since the syringe assisting tool is configured to rotate the cover portion to switch between the open state and the closed state, the patient operates the cover portion with the other hand while holding the main body with one hand. And rotate it.

Therefore, in the syringe assisting tool, since the patient uses both hands each time the cover portion is opened and closed, the operator has to perform a series of operations from fixing the syringe to the main body to taking out the syringe after injection. However, it was complicated because it was necessary to change the main body.

Further, in the syringe assisting tool, since the cover portion is closed and the cap is removed from the syringe main body, the injection needle is continuously exposed from the time when the syringe is set between the main body and the cover portion, resulting in lack of safety. Was there.

Therefore, in view of such circumstances, it is an object of the present invention to provide a syringe assisting tool capable of performing self-injection easily and safely.

The syringe assisting tool of the present invention is attached to a syringe body having a cylindrical barrel filled with an injection and an injection needle provided at one end in the axial direction of the barrel, and the syringe body so as to cover the syringe needle. It is a syringe auxiliary tool used by being attached to a syringe provided with a cap to be used, and is a housing in which the syringe body can be pulled out in a pulling direction orthogonal to the axial direction of the barrel, and a housing inserted into the housing. An removal member for removing the cap from the syringe body, a removal control unit capable of restricting the removal of the syringe body from the housing, and a retractable attachment to the housing and the removal outside. It is provided with a material and an operation unit configured to operate the extraction control unit, and the operation unit switches from a raised state caused to the housing to a pushed down state pushed down to the housing. Along with this, the removing member removes the cap from the syringe body, the extraction restricting unit restricts the extraction of the syringe body from the housing, and the operating unit switches from the pushed state to the raised state. Along with this, the extraction restricting unit is configured to release the restriction on the extraction of the syringe body from the housing.

The syringe assisting tool having the above configuration includes a extraction control unit that can regulate the extraction of the syringe body from the housing by pushing and pulling the operation unit that can be retractably attached to the housing, and the housing. Since the removal member for removing the cap from the syringe body of the syringe inserted in the syringe is configured to operate, the patient can hold the syringe with one hand while holding the syringe in the housing. It is possible to perform a series of operations from insertion to removal of the syringe body after injection.

Therefore, the syringe assisting device can reduce the trouble of changing the housing when the patient performs self-injection.

Further, in the syringe assisting tool, as the operation unit switches from the raised state to the pushed state, the removing member removes the cap from the syringe body, and the extraction restricting unit restricts the extraction of the syringe body from the housing. The patient can remove the syringe body from the cap at his / her desired timing after inserting the syringe into the housing.

Therefore, the syringe assisting tool can be handled with the cap attached to the syringe body until immediately before self-injection is performed (immediately before the injection needle is punctured by the human body).

Further, in the syringe assisting tool of the present invention, the housing is configured to project the injection needle outward from one end in the axial direction, and the operating portion is rotatably attached to the housing. At the same time, it has a lever portion configured to extend from the mounting position to the housing, and the tip portion of the lever portion is arranged on the other end side of the housing in the axial direction from the mounting position. It may be done.

According to this configuration, the tip of the lever portion is arranged on the other end side of the housing, which is opposite to the one end side on which the injection needle is projected, so that the patient can put his little finger along one end side of the housing. The tip of the lever can be placed near the thumb or index finger while the housing is gripped. Therefore, with the syringe assisting tool, when the patient performs self-injection, the operation unit can be easily pushed down and pulled up.

In the syringe assisting tool of the present invention, the operating portion is gradually separated from the housing as the lever portion moves from the mounting position to the tip end side in the raised state with respect to the outer surface of the housing. It may be configured to have an inclined posture.

According to this configuration, the opening angle of the lever portion with respect to the housing is suppressed in the state where the operation unit is switched to the raised state, so that the operation unit can be easily pushed down while the patient holds the housing. be able to.

Further, in the syringe assisting tool of the present invention, the operating portion is configured such that the tip end portion of the lever portion is arranged at a position protruding from the other end of the housing in the axial direction in the pushed down state. You may be.

According to such a configuration, when the operating portion is in the pushed-down state, the tip end portion of the lever portion is arranged at a position protruding from the other end of the housing in the axial direction, so that the operating portion is switched from the pushed-down state to the raised state. At this time, the tip of the lever can be easily operated.

As described above, according to the syringe assisting tool of the present invention, it is possible to exert an excellent effect that self-injection can be performed easily and safely.

FIG. 1 is a perspective view of a syringe assisting tool according to an embodiment of the present invention. FIG. 2 is a plan view of the syringe assisting tool according to the same embodiment. FIG. 3 is an exploded view of the syringe assisting tool according to the same embodiment, which is an exploded view when the operation unit is in the raised state. FIG. 4 is an exploded view of the syringe assisting tool according to the same embodiment, which is an exploded view when the operation unit is in the pushed-down state. FIG. 5 is a cross-sectional view of the syringe assisting tool according to the same embodiment, which is a cross-sectional view in which only the housing is cut along the VV line of FIG. FIG. 6 is a cross-sectional view of the syringe assisting tool according to the same embodiment, which is a cross-sectional view taken along the line VI-VI of FIG. FIG. 7 is a plan view of the base portion of the syringe assisting tool according to the same embodiment. FIG. 8 is a plan view of the cover portion of the syringe assisting tool according to the same embodiment. FIG. 9 is a bottom view of the cover portion of the syringe assisting tool according to the embodiment. FIG. 10 is an explanatory view of the syringe assisting tool according to the same embodiment, and is an explanatory view of a state in which the syringe is inserted into the housing. FIG. 11 is an explanatory view of the syringe assisting tool according to the same embodiment, and is an explanatory view of a state in which the operation unit is switched to the pushed state. FIG. 12 is an explanatory view of the syringe assisting tool according to the same embodiment, and is an explanatory view of a state in which the operation unit is switched to the raised state. FIG. 13 is a plan view of a syringe to which the syringe assisting tool according to the same embodiment is attached.

Hereinafter, the syringe assisting tool according to the embodiment of the present invention will be described with reference to the accompanying drawings. The syringe assisting tool according to the present embodiment is used by being attached to a syringe when a patient performs self-injection.

Prior to the explanation of the syringe aid, the syringe will be explained. As shown in FIG. 13, the syringe includes a syringe body 80 used for administering an injection to the human body.

The syringe body 80 is inserted from a tubular barrel 81 filled with an injection, an injection needle 82 provided at one end of the barrel 81 in the axial direction (hereinafter referred to as the axial direction), and the other end of the barrel 81. It is provided with a plunger 83 configured to be movable in the axial direction.

The barrel 81 has a tubular barrel main body 810, a nozzle portion 811 connected to one end of the barrel main body 810 in the center line direction and into which the injection needle 82 is inserted, and a center line of the barrel main body 810. It has an annular portion 812 that is continuously provided at one end in the direction and surrounds the nozzle portion 811 and a flange portion 813 that projects outward from the entire outer circumference of the other end of the barrel body portion 810.

The outer diameter of the annular portion 812 is smaller than the outer diameter of the barrel main body portion 810.

The plunger 83 is attached to a rod-shaped rod 830, a gasket 831 fixed to one end of the rod 830 in the longitudinal direction and in close contact with the entire inner peripheral surface of the barrel body 810, and the other end of the rod 830 in the longitudinal direction. It has a head 832 provided.

Further, the syringe 8 includes a cap 84 that is attached to the syringe body 80 so as to cover the injection needle 82. The cap 84 is configured to be fitted onto the annular portion 812 and attached to the syringe body 80. Further, the syringe 8 is configured so that a gap is formed between the syringe body 80 and the cap 84 attached to the syringe body 80.

As shown in FIGS. 1 and 2, the syringe assisting tool has a housing 2 capable of inserting and removing the syringe body 80 in a direction orthogonal to the axial direction (outside the diameter of the barrel 81) and a housing 2 with respect to the housing 2. An operation unit 3 that can be vertically attached, a removal member 4 for removing the cap 84 from the syringe body 80, a sampling control unit 5 that can regulate the removal of the syringe body 80 from the housing 2, and a housing. The operating mechanism 6 (see FIGS. 3 and 4) for operating the removal member 4 and the extraction restricting unit 5 in conjunction with the pushing and pulling operations of the operating unit 3 with respect to 2 and the pulling operation of the operating unit 3 can be locked. It is provided with a lock mechanism 7 (see FIG. 4) configured in.

In the present embodiment, the direction in which the syringe body 80 is inserted / removed from the housing 2 in the outer diameter direction of the barrel 81 is the insertion / removal direction, and the direction orthogonal to the axial direction and the insertion / removal direction is the width direction. The following explanation will be given.

As shown in FIGS. 1 and 2, the housing 2 has a housing main body 20 in which an arrangement space is formed which is open in the axial direction and a direction orthogonal to the axial direction, and a syringe main body inserted into the arrangement space. A receiving portion 21 for receiving the 80, a positioning portion 22 for restricting the movement of the syringe main body 80 inserted into the arrangement space in the axial direction, and a cover formed on the housing main body 20 and to which the operating portion 3 is attached. It has a mounting portion 23 (see FIG. 5).

Further, the housing 2 has a guide structure 24 for guiding the removal member 4 in the axial direction in the housing main body 20 (see FIG. 7), and the removal member 4 is attached to one side in the axial direction. It has an urging structure 25 for urging (see FIG. 6).

The arrangement space is formed so as to be open at both ends (front end and rear end) in the axial direction of the housing main body 20 and one end (upper end) in the pull-out direction. Therefore, when the syringe body 80 is inserted into the arrangement space of the housing body 20 from above, the cap 84 (injection needle 82) protrudes from the front end and the plunger 83 protrudes from the rear end. It is configured.

The housing body 20 according to the present embodiment is formed at a peripheral wall portion 200 formed so as to be rounded in the circumferential direction centered on the axial direction, and at one end (front end) of the peripheral wall portion 200 in the axial direction. It has a front wall portion 201 to be formed, and a rear wall portion 202 formed at the other end (rear end) of the peripheral wall portion 200 in the axial direction.

The peripheral wall portion 200 has a base portion 203 having a shape curved so as to bulge downward, and a cover portion 204 mounted on the base portion 203.

As shown in FIG. 7, the base portion 203 is directed toward the base side long wall portion 203a arranged so as to extend from the rear wall portion 202 toward the front wall portion 201 side and the base side long wall portion 203a toward the front wall portion 201 side. It has a base-side short wall portion 203b that extends.

The base-side long wall portion 203a includes a bottom portion 203d having an inner plane 203c extending in the axial direction and the width direction in the housing main body portion 20, and a pair of side wall portions 203e extending from both sides of the bottom portion 203d in the width direction. And have.

The pair of side wall portions 203e extend upward from the bottom portion 203d and are curved so as to bulge toward the outside of the housing main body 20 (curved so as to bulge in a direction away from each other in the width direction). doing).

The side wall portion 203e according to the present embodiment extends from the rear wall portion 202 toward the front wall portion 201 side and has a larger outer shape, and the base side expansion portion 203f and the front wall portion 201 side from the base side expansion portion 203f. It has a base-side squeezing portion of 203 g that extends to and has a smaller outer shape.

The distance between the pair of base-side expansion portions 203f gradually increases from the base end portion (end portion continuous with the rear wall portion 202) to the tip end portion (end portion continuous with the base-side narrowing portion 203g). It is formed like this. Along with this, the pair of base-side expansion portions 203f are inclined so that their outer surfaces gradually expand to the outside of the housing main body portion 20 from the base end side to the tip end side.

A notch (hereinafter, base-side notch) 203h is formed on the base end side of one of the base-side expansion portions 203f according to the present embodiment. The base-side notch 203h has a base-side first end edge 203i extending from the base end of one base-side expansion portion 203f along the axial direction and a base-side second end edge 203i orthogonal to the base-side first end edge 203i. It is defined by 203j.

The base-side narrowing portion 203g extends from the tip of the base-side expansion portion 203f to the front wall portion 201 side. The pair of base-side narrowing portions 203g are formed so as to incline toward the inside of the housing main body portion 20 from the proximal end side to the distal end side. Along with this, in the pair of base-side narrowing portions 203g, their outer surfaces are inclined toward the inside of the housing main body portion 20 from the proximal end side to the distal end side.

As shown in FIGS. 8 and 9, the cover portion 204 includes a pair of covering wall portions 204a arranged at intervals in the width direction and a pair of hanging wall portions 204b hanging from the covering wall portion 204a. And have.

The covering wall portion 204a includes a cover-side long wall portion 204c extending from the rear wall portion 202 to the front wall portion 201 side and a cover-side short wall portion 204d extending from the cover-side long wall portion 204c toward the front wall portion 201. Have.

Each cover-side long wall portion 204c is curved so as to approach each other upward from a position corresponding to the tip of the base-side long wall portion 203a.

The cover-side long wall portion 204c according to the present embodiment includes a cover-side expansion portion 204e that extends from the rear wall portion 202 toward the front wall portion 201 and has a larger outer shape, and a cover-side expansion portion 204e to the front wall portion. It has a cover-side narrowing portion 204f that extends to the 201 side and has a smaller outer shape.

The distance between the pair of cover-side expansion portions 204e gradually increases from the base end portion (end portion continuous with the rear wall portion 202) to the tip end portion (end portion continuous with the cover-side narrowing portion 203f). It is formed like this. Along with this, the outer surfaces of the pair of cover-side expansion portions 204e are inclined so as to gradually expand to the outside of the housing main body portion 20.

A notch (hereinafter referred to as a cover-side notch) 204 g is formed on the base end side of one cover-side expansion portion 204e according to the present embodiment. The cover-side notch 204g includes a cover-side first end edge 204h extending along the axial direction from the base end of one cover-side expansion portion 204e and a cover-side second end edge orthogonal to the cover-side first end edge 204h. It is defined by 204i.

Further, each cover-side expansion portion 204e is formed with a notch (hereinafter referred to as a notch for insertion) 204j at the upper end of the base end portion of the cover-side expansion portion 204e. As a result, a gap through which the flange portion 813 can be inserted is formed between the base end portion of the cover-side expansion portion 204e and the rear wall portion 202.

The cover-side first end edge 204h is arranged so as to face the base-side first end edge 203i in the pull-out direction, and the cover-side second end edge 204i is arranged so as to face the base-side first end edge 203i in the pull-out direction. It is arranged so as to be continuous with the edge 203j. Therefore, in the peripheral wall portion 200 according to the present embodiment, one recess (hereinafter referred to as a mounting recess) is defined by the base side notch 203h and the cover side notch 204g.

Further, a curved surface 204k that is partially curved downward is formed on the upper end side of each cover-side expansion portion 204e according to the present embodiment.

The cover-side narrowing portion 204f extends from the tip of the cover-side expansion portion 204e to the front wall portion 201 side. The pair of cover-side narrowing portions 204f are formed so as to incline toward the inside of the housing main body portion 20 from the proximal end side to the distal end side. Along with this, in the pair of cover-side narrowing portions 204f, their outer surfaces are inclined toward the inside of the housing main body portion 20 from the proximal end side to the distal end side.

The hanging wall portion 204b is formed so as to hang from the upper end of the covering wall portion 204a. The hanging wall portion 204b is formed so as to extend so as to extend over a part of the cover side long wall portion 204c and the cover side short wall portion 204d. Further, in the present embodiment, the entrance / exit recess 204l is formed in one of the hanging wall portions 204b (see FIG. 9).

The front wall portion 201 is integrally formed with the cover portion 204, and is a portion that is abutted against the human body when an injection is performed. As shown in FIG. 1, the front wall portion 201 includes a front wall main body portion 201a that is aligned with the peripheral wall portion 200 in the axial direction, and a pair of extensions that extend outward from the front wall main body portion 201a to the peripheral wall portion 200. It has a protrusion 201b.

The front wall main body 201a is formed with a concave portion that curves downward in a convex shape. Further, the recess of the front wall main body portion 201a is formed at a position corresponding to the space between the covering wall portions 204a in the axial direction.

The pair of extending portions 201b are arranged so as to be arranged at intervals in the width direction. Further, in the front wall portion 201 according to the present embodiment, the distance between the pair of extending portions 201b and the width of the recess of the front wall main body portion 201a (width in the width direction) correspond to each other. ing.

Further, the front wall portion 201 is formed with a front wall side recess 201c extending upward along the pull-out direction from a position corresponding to the space between the covering wall portions 204a in the axial direction. The side recess 201c communicates with the space between the covering wall portions 204a in the axial direction.

The rear wall portion 202 is integrally formed with the cover portion 204. As shown in FIG. 6, the rear wall portion 202 is a rear wall side recess 202a that opens upward in the insertion direction, and is after communicating with the space between the covering wall portions 204a in the axial direction. A wall-side recess 202a is formed.

Further, the rear wall portion 202 has an inner wall surface 202b located inside the housing main body portion 20.

Here, the housing main body portion 20 according to the present embodiment further has a fixing structure 205 for fixing the cover portion 204 on the base portion 203. The fixed structure 205 has a locked portion 205a formed on the base and a locking portion 205b for fixing the cover portion 204 on the base portion 203 by locking the locked portion 205a.

The locked portion 205a includes a front claw portion 205c extending from the tip of the base side short wall portion 203b in the axial direction and a rear claw portion 205d extending from the base end of the base side long wall portion 203a in the axial direction. And have. At the tip of the short wall portion 203b on the base side, two front claw portions 205c are formed at intervals in the width direction (see FIG. 7).

The locking portion 205b is composed of a front locking hole 205e formed so as to penetrate the front wall portion 201 and a rear locking hole 205f formed so as to penetrate the rear wall portion 202. The front wall portion 201 is formed with two front locking holes 205e at intervals in the width direction (see FIG. 8).

Therefore, in the housing body 20, the cover portion 204 is placed on the base portion 203 by inserting the front claw portion 205c into the front locking hole 205e and inserting the rear claw portion 205d into the rear locking hole 205f. It is configured to be fixed.

As shown in FIGS. 8 and 9, the receiving portions 21 are arranged at intervals in the width direction, and are located at the upper end of the covering wall portion 204a (in the present embodiment, the upper end of the cover-side long wall portion 204c). It has a pair of bridging portions 210 that are continuously provided, and a mounting portion 211 that is continuous with each of the bridging portions 210.

The cross-linked portion 210 hangs down from the upper end of the covering wall portion 204a. Further, the distance between the cross-linked portions 210 in the width direction corresponds to the distance between the upper ends of the covering wall portions 204a in the width direction.

The mounting portion 211 is curved downward from the end portion connected to the cross-linked portion 210 toward the central portion in the width direction.

The receiving portion 21 according to the present embodiment is provided on the rear end side of the cover portion 204 in the arrangement region, and is arranged so as to form a gap between the receiving portion 21 and the rear wall portion 202 in the axial direction. There is. Further, the gap between the receiving portion 21 in the axial direction (one end 212 of the receiving portion 21 in the axial direction) and the rear wall portion 202 is wide enough to allow the flange portion 813 to be inserted. Therefore, the flange portion 813 can be inserted between each of the crosslinked portions 210 and the rear wall portion 202, and between the mounting portion 211 and the rear wall portion 202.

As described above, in the housing 2, when the receiving portion 21 receives the syringe main body 80, the flange portion 813 of the syringe main body 80 is placed between one end 212 of the receiving portion 21 and the inner wall surface 202b of the rear wall. By being configured to be inserted, the movement of the syringe body 80 in the axial direction can be regulated. Therefore, the positioning portion 22 according to the present embodiment is composed of an inner wall surface of the rear wall portion 202 and one end 212 of the receiving portion 21.

As shown in FIG. 5, the mounted portion 23 according to the present embodiment includes a mounting shaft portion (hereinafter referred to as a base side mounting shaft portion) 230 formed on the base portion 203 and a mounting shaft formed on the cover portion 204. It is composed of a part (hereinafter, referred to as a cover side mounting shaft part) 231.

The base-side mounting shaft portion 230 and the cover-side mounting shaft portion 231 are arranged at positions corresponding to each other in the pull-out direction. Further, the base side mounting shaft portion 230 and the cover side mounting shaft portion 231 are formed so that their axial directions correspond to the pull-out directions.

The guide structure 24 is configured to guide the removal member 4 arranged on the inner plane 203c of the bottom portion 203d in the axial direction. As shown in FIGS. 5 and 7, the guide structure 24 according to the present embodiment has a guide groove 240 formed on the inner plane 203c of the bottom 203d so as to extend straight in the axial direction, and the removal member 4. It is composed of a separation prevention portion 241 for preventing the bottom portion 203d from being separated from the inner plane 203c.

Separation prevention portions 241 are formed one on each side of the guide groove 240 in the width direction. As shown in FIG. 5, each separation prevention portion 241 has an upright piece 241a that stands up from the inner plane 203c of the bottom portion 203d, and a projecting piece 241b that protrudes from the upright piece 241a toward the adjacent upright piece 241a. The upright piece 241a and the protruding piece 241b are formed so as to extend along the axial direction.

As shown in FIG. 6, the urging structure 25 is configured to urge the removing member 4 from the front end side to the rear end side of the housing body 20. More specifically, the urging structure 25 is formed on the urging member 250 arranged in the housing body 20 so as to expand and contract in the axial direction, and the urging member 250 formed on the base portion 203. It has a fixed-side mounting portion 251 to which one end in the stretching direction is mounted, and a movable-side mounting portion 252 formed on the removing member 4 and to which the other end of the urging member 250 is mounted in the stretching direction.

The urging member 250 is a compression coil spring, and urges the movable side mounting portion 252 and the fixed side mounting portion 251 in a direction in which they are separated from each other in the axial direction.

The fixed-side mounting portion 251 includes a fixed-side pressure receiving portion 251a that stands up in the base portion 203 and a fixed-side mounting shaft 251b that extends from the fixed-side pressure receiving portion 251a toward the movable-side mounting portion 252 in the axial direction. Has.

The movable side mounting portion 252 is a movable side pressure receiving portion 252a facing the fixed side pressure receiving portion 251a in the axial direction, and a movable side extending from the movable side pressure receiving portion 252a toward the fixed side mounting shaft 251b in the axial direction. It has a mounting shaft 252b. Therefore, the fixed side pressure receiving portion 251a and the movable side pressure receiving portion 252a are always urged by the urging member 250 in a direction in which they are separated from each other in the axial direction.

As shown in FIGS. 3 and 4, the operation unit 3 includes a lever unit 30 that is attached to the housing 2 and extends from the attachment position to the housing 2 toward the other end side of the housing 2. It has an actuating connecting portion 31 that operates the removal member 4 and the extraction restricting portion 5 in conjunction with the movement of the portion 30.

The lever portion 30 is connected to a rotary connecting portion 300 having a base end rotatably attached to the housing 2 and a tip arranged on the other end side of the housing 2 and the tip of the rotary connecting portion 300. It has a push-pull portion 301.

As shown in FIG. 4, the rotary connecting portion 300 includes an outer wall forming portion 300a configured to close the mounting recess in a state where the operating portion 3 is switched from the raised state to the pushed state, and the outer wall in the pulling-out direction. It has a pair of ribs 300b extending from both ends of the forming portion 300a toward the inside of the housing 2.

The rotary connecting portion 300 is formed so that the outer surface is curved so as to correspond to the outer surface of the peripheral wall portion 200. Therefore, when the operation unit 3 is switched from the raised state to the pushed state, the outer surface of the rotary connecting portion 300 is arranged at a position corresponding to or substantially corresponding to the outer surface of the peripheral wall portion 200, and the operation unit 3 is pulled up from the pushed state. When it is switched to the state, it is arranged so as to be inclined with respect to the outer surface of the housing 2.

The push-pull portion 301 is continuously provided at the tip of the rotary connecting portion 300. The push-pull portion 301 has a protruding portion 301a that stands up from the outer surface of the rotary connecting portion 300, and an extending portion 301b that extends to the tip of the protruding portion 301a.

The push-pull portion 301 is configured such that when the operation portion 3 is switched to the pushed-down state, the extension portion 301b projects to the rear side of the rear wall portion 202 in the axial direction.

As shown in FIG. 5, each rib 300b is formed with an insertion hole 300c that penetrates in the insertion / removal direction. The base side mounting shaft portion 230 is inserted through the insertion hole 300c of one of the ribs 300b. The cover-side mounting shaft portion 231 is inserted through the insertion hole 300c of the other rib 300b. Therefore, the operation unit 3 attached to the attachment unit 23 can rotate in the circumferential direction centered on the virtual axis extending along the insertion / removal direction.

As shown in FIG. 4, the operating connecting portion 31 has a flat plate-shaped connecting plate portion 310 formed on the lever portion 30. The connecting plate portion 310 is formed with a connecting insertion hole 310a that penetrates in the pull-out direction. The connecting insertion hole 310a is formed by an elongated hole formed in the connecting plate portion 310, and a connecting shaft portion 421 described later is inserted through the connecting insertion hole 310a.

The removal member 4 can reciprocate in the axial direction in the housing 2, and is capped from the syringe body 80 as it moves in the axial direction (movement from the rear wall portion 202 side to the front wall side). It is configured to remove 84.

The removal member 4 includes an extruded portion 40 for pushing the cap 84 in the axial direction, and a guided portion 41 connected to the extruded portion 40 and guided by the guide structure 24 in the axial direction in the housing 2. (See FIG. 5), and has a connecting portion 42 for interlocking the movement of the operating portion 3 with the movement of the extrusion portion 40.

The extrusion portion 40 has an arrangement portion 400 in which one end side of the barrel main body portion 810 is arranged, and an extrusion claw portion 401 arranged between the barrel main body portion 810 arranged in the arrangement portion 400 and the cap 84.

The arrangement portion 400 is a pair of a mounting surface portion 400a on which the barrel main body portion 810 is placed in the pull-out direction and a pair that stands up from the mounting surface in the pull-out direction and is arranged at intervals in the width direction. Has an upright portion 400b of.

The above-mentioned mounting surface portion 400a is formed so as to be curved according to the outer shape of the barrel main body portion 810. The distance between the standing portions 400b in the width direction is set to be slightly larger than the outer diameter of the barrel main body portion 810.

One extruded claw portion 401 is formed on each upright portion 400b. The extruded claws 401 are arranged so as to be adjacent to each other in the width direction. Further, each extruded claw portion 401 projects from the standing portion 400b in a direction approaching each other. The distance between the extruded claw portions 401 is set to be smaller than the outer diameter of the cap 84 and larger than the outer diameter of the annular portion 812.

As shown in FIG. 5, the guided portion 41 has a guided piece 410 projecting in the pull-out direction and a pair of retaining pieces 411 extending from both sides of the guided portion 41 in the width direction.

The guided piece 410 has a shape extending along the axial direction, and is arranged in the guide groove 240.

The retaining piece 411 has a shape extending along the axial direction, and is arranged between the bottom portion 203d and the protruding piece 241b.

As shown in FIG. 4, the connecting portion 42 has a connecting piece portion 420 connected to the extrusion portion 40 and a connecting shaft portion 421 protruding from the connecting piece portion 420. The connecting shaft portion 421 is arranged at a position outside the region corresponding to the extruded portion 40 in the axial direction.

The extraction restricting unit 5 is configured to switch between a state in which it advances from the inside of the housing 2 to the covering wall portion 204a through the retractable recess and a state in which it retracts from between the covering wall portions 204a into the housing 2. Since the extraction restricting unit 5 is erected on the connecting plate unit 310, it retracts into the housing 2 and the state of advancing between the covering wall portions 204a as the operation unit 3 switches to the pushed down state or the raised state. It switches to the state where it was evacuated.

Further, as shown in FIGS. 5 and 6, the extraction restricting portion 5 is formed with a retaining recess 50 having a shape corresponding to the outer shape of the barrel body portion 810, and when it advances between the covering wall portions 204a, the barrel body portion It is configured to abut the portion extending from the lower portion to the side portion and the upper portion of the 810.

The extraction restricting unit 5 according to the present embodiment has a pair of retaining portions 51 arranged at intervals in the pulling direction, and a connecting portion 52 continuous with each of the pair of retaining portions 51.

One of the retaining portions 51 is connected to the connecting piece portion 420 in series. Therefore, when the extraction restricting portion 5 advances between the covering wall portions 204a, one retaining portion 51 is arranged below the barrel body portion 810, and the other retaining portion 51 is arranged above the barrel body portion 810 to connect. The portion 52 is configured to be arranged on the side of the barrel main body portion 810.

The operating mechanism 6 is configured to link the pushing-down operation or the pulling-up operation of the operation unit 3 with the movement of the removal member 4 in the axial direction. As shown in FIGS. 3 and 4, the operating mechanism 6 according to the present embodiment is composed of an operating connecting portion 31 of the operating portion 3 and a connecting portion 42 of the removing member 4.

The lock mechanism 7 has a pull-up lock structure capable of locking the pull-up operation of the operation unit 3 that has been switched to the pushed-down state.

As shown in FIG. 4, the pull-up lock structure includes a hooked portion 70 formed in the housing 2 and a hooked portion 71 formed on the lever portion 30 so as to be hookable on the hooked portion 70. Has.

The hooked portion 70 is formed in the housing main body portion 20. Further, the hooked portion 70 is formed in a shaft shape, and is configured so that the axial direction corresponds to the pull-out direction. The hooked portion 70 according to the present embodiment is formed so as to extend from the base portion 203 in the pull-out direction.

The hook portion 71 is formed on one of the ribs 300b. More specifically, the hooking portion 71 is formed of a recess formed in one of the ribs 300b and into which the hooked portion 70 can be fitted.

Therefore, the pull-up lock structure is configured to lock the pull-up operation of the operation unit 3 when the hooked portion 70 is fitted into the recess constituting the hook portion 71.

In the present embodiment, as described above, the urging structure 25 urges the removing member 4 toward one side in the axial direction. Therefore, the urging structure 25 indirectly urges the operation unit 3 to switch to the raised state. Therefore, the urging structure 25 also functions as a push-down lock structure that locks the push-down operation.

The syringe assisting tool 1 according to the present embodiment has the above configuration. Subsequently, a method of using the syringe assisting tool 1 will be described.

When performing self-injection using the syringe assisting tool 1, the patient inserts the syringe 8 (the syringe body 80 with the cap 84 attached) into the housing 2 of the syringe assisting tool 1.

More specifically, the syringe body 80 is inserted into the arrangement space of the housing body 20 from above.

Along with this, the flange portion 813 passes between the rear wall portion 202 and the insertion notch 204j and is inserted between the inner wall surface of the rear wall portion 202 and one end 212 of the receiving portion 21, and the syringe body 80 The movement in the axial direction is restricted. More specifically, in the syringe body 80, the flange portion 813 is caught by one end 212 of the receiving portion 21 when trying to move to the front wall side, and the flange portion 813 moves to the rear wall when trying to move to the rear wall side. Since it is caught on the inner wall surface of the above, the movement in the axial direction is restricted.

Further, the rod 830 of the plunger 83 is inserted into the rear wall side recess 202a, the barrel body 810 is inserted between the covering wall portions 204a, and the cap 84 is inserted into the front wall side recess 201c. Then, the extruded claw portion 401 is inserted into the gap between the syringe main body 80 (barrel main body portion 810) and the cap 84. In this way, the syringe 8 is set in the syringe aid 1.

Subsequently, as shown in FIG. 10, the patient grasps the housing 2 by attaching an index finger to the rear end side of the peripheral wall portion 200 and a little finger to the front end side of the peripheral wall portion 200.

Then, as shown in FIG. 11, when the operation unit 3 is switched from the raised state to the pushed state at the timing when the patient wants to perform self-injection, the cap 84 is removed from the syringe body 80 and the injection needle 82 is exposed. Extraction of the syringe body 80 from the housing 2 is restricted.

This will be described more specifically. When the patient pushes the extension portion 301b of the push-pull portion 301 toward the housing 2 with his thumb, the lever portion 30 rotates about the attachment position to the housing 2. In the present embodiment, the lever portion 30 rotates in the circumferential direction centered on the axial direction of the base side mounting shaft portion 230 and the cover side mounting shaft portion 231.

Along with this, the actuating connecting portion 31 also rotates around the mounting position of the lever portion 30 to the housing 2, and the extraction restricting portion 5 and the removing member 4 operate in conjunction with the rotation of the operating connecting portion 31. ..

At this time, the extraction restricting portion 5 advances from the inside of the housing 2 between the covering wall portions 204a, so that one of the retaining portions 51 is arranged above the barrel main body portion 810. As a result, the extraction of the syringe body 80 from the housing 2 is restricted.

Further, as the removal member 4 moves from the rear wall side to the front wall side in the axial direction, the extruded claw portion 401 moves toward the front wall side while pushing the cap 84. As described above, since the syringe body 80 is restricted from moving in the axial direction, the cap 84 is pulled out from the syringe body 80. In this way, the syringe 8 set in the syringe aid 1 is ready for self-injection.

Then, when the operating portion 3 is switched from the raised state to the pushed state, the hooked portion 70 is inserted into the recess constituting the hooked portion 71. The fixed side pressure receiving portion 251a and the movable side pressure receiving portion 252a are always urged by the urging member 250 in a direction in which they are separated from each other in the axial direction, but stay in the hooked portion 71 on the hooked portion 70. The raising operation of the operation unit 3 is locked. Therefore, the switching from the pushed state to the raised state of the operation unit 3 is locked.

Then, the patient grasps the housing 2 by holding the upper part of the cover portion 204 with his thumb, punctures the injection needle 82 at the injection site, and brings the front wall portion 201 into contact with the human body. In this state, when the head 832 of the plunger 83 is pushed in, the injection in the barrel 81 is administered to the human body.

After the self-injection is completed, as shown in FIG. 12, when the operation unit 3 is switched from the pushed state to the raised state, the extraction restricting unit 5 retracts from between the covering wall portions 204a into the housing 2 and the syringe main body. The 80 is ready to be removed from the housing 2.

In the present embodiment, when the thumb is hooked on the extension portion 301b of the push-pull portion 301 and the pulling operation is performed in the direction away from the housing, the actuating connecting portion 31 rotates together with the lever portion 30 and is interlocked with the rotation of the operating connecting portion 31. Then, the extraction control unit 5 and the removal member 4 operate. Then, the actuating connecting portion 31 retracts the extraction restricting portion 5 from between the covering wall portions 204a into the housing 2, and the removal member 4 returns to the original position.

The patient punctures the human body with an injection needle 82 protruding from the front end of the housing 2 in the axial direction, and further pushes the plunger 83 with the thumb to perform self-injection.

After self-injection, the push-pull portion 301 is pulled up with the thumb of the hand holding the housing 2 to remove the hook portion 71 from the hooked portion 70, so that the operation portion 3 is switched from the pushed-down state to the raised state. At the same time, the extraction restricting portion 5 retracts into the housing 2 from between the covering wall portions 204a through the retractable recess. As a result, the syringe body 80 can be removed from the housing 2.

As described above, the syringe assisting tool 1 according to the present embodiment is the syringe main body 80 from the housing 2 as the operation unit 3 is pushed down or pulled up so as to be vertically attached to the housing 2. Since the extraction control unit 5 capable of restricting extraction and the removal member 4 for removing the cap 84 from the syringe body 80 of the syringe 8 inserted into the housing 2 are configured to operate, the patient can receive the patient. While holding the housing 2 with one hand, it is possible to perform a series of operations from inserting the syringe 8 into the housing 2 to taking out the syringe body 8 after injection.

Therefore, the syringe assisting tool 1 can reduce the trouble of changing the housing 2 when the patient performs self-injection.

Further, in the syringe assisting tool 1, as the operation unit 3 switches from the raised state to the pushed state, the removing member 4 removes the cap 84 from the syringe body 80, and the extraction restricting unit 5 removes the syringe body from the housing 2. Since it is configured to restrict the extraction of the 80, the patient can remove the cap 84 from the syringe body 80 at his / her desired timing after inserting the syringe 8 into the housing 2.

Therefore, the syringe assisting tool 1 can be handled with the cap 84 attached to the syringe body 80 until immediately before self-injection is performed (immediately before the injection needle 82 is punctured by the human body).

Further, in the syringe assisting tool 1 according to the present embodiment, since the urging structure 25 indirectly urges the operating unit 3 to switch to the raised state, the operating unit 3 is in the raised state at a timing not intended by the patient. It is prevented from switching to the pushed down state.

Further, in the syringe assisting tool 1 according to the present embodiment, the locking mechanism 7 prevents the operating unit 3 from switching from the pushed state to the raised state at a timing not intended by the patient. Therefore, the syringe assisting tool 1 according to the present embodiment prevents the syringe body 80 from falling off from the housing 2 and the cap 84 from being removed from the syringe body 80 at a timing not intended by the patient.

As described above, the syringe assisting tool 1 can easily and safely perform self-injection.

Further, in the present embodiment, the tip of the lever portion 30 is arranged on the other end side of the housing 2 opposite to the one end side on which the injection needle 82 is projected, so that the patient is on the front end side of the housing 2. The tip of the lever portion 30 can be arranged near the thumb or index finger while the housing 2 is gripped along with the little finger. Therefore, in the syringe assisting tool 1, when the patient performs self-injection, the operation unit 3 can be easily pushed down or raised.

Further, in the present embodiment, when the operation unit 3 is switched from the raised state to the pushed state, the tip portion (that is, the pushed / pulled portion 301) of the lever portion 30 protrudes from the other end of the housing 2 in the axial direction. Since it is arranged at the position, the push-pull portion 301 can be easily operated when the operation portion 3 is switched from the pushed-down state to the raised state.

Then, the lever portion 30 (outer surface of the rotary connecting portion 300) is in an inclined posture with respect to the outer surface of the housing 2 in a state where the operation portion 3 is switched to the raised state (specifically, the lever portion 30). Is configured to be inclined with respect to the outer surface of the housing 2 so as to gradually separate from the housing 2 as it moves from the mounting position to the tip end side), so that the lever portion 30 with respect to the housing 2 is formed. The opening angle of the lever is suppressed, which enables the patient to easily push down the operation unit 3 while holding the housing 2.

The syringe assisting tool 1 according to the present embodiment is not limited to the above-mentioned one embodiment, and it goes without saying that various modifications are made without departing from the gist of the present invention.

In the above embodiment, the housing 2 is formed so that the outer diameter is different at each position in the axial direction, but the housing 2 is not limited to this configuration. For example, the housing 2 may be formed so that the outer diameter is the same at each position in the axial direction.

Further, in the above embodiment, in the housing main body portion 20, the front wall portion 201 and the rear wall portion 202 are integrally formed with the cover portion 204 to form a single member (hereinafter referred to as a cover body). The cover body was attached to the base, but the configuration is not limited to this. For example, in the housing body portion 20, the front wall portion 201 may be integrally formed with the base portion 203, or the rear wall portion 202 may be integrally formed with the base portion 203.

Further, in the above embodiment, the urging member 250 indirectly urges the operation unit 3, but the present invention is not limited to this configuration, and for example, the operation unit 3 may be directly urged.

Further, in the urging structure 25 according to the above embodiment, the urging member 250 urges the removing member 4 from the front wall side toward the rear wall side, but the present invention is not limited to this configuration. For example, in the urging structure 25, the urging member 250 may be arranged between the rear wall and the removing member 4 and may be configured to pull the removing member 4 toward the rear wall side.

In this case, the urging member 250 may be composed of a tension coil spring, and the movable side mounting portion 252 may be configured to face the fixed side mounting portion 251 formed on the rear wall side of the removing member 4. .. As described above, in the urging structure 25, the urging member 250 may be configured to urge the removing member 4 so as to be pulled toward the rear wall side.

Further, in the above-described embodiment, the push-pull portion 301 of the operation portion 3 has a bent shape, but may have a shape that extends straight, for example. In this case, the push-pull portion 301 may be formed so as to extend in the same direction as the direction in which the rotary connecting portion 300 extends or in a direction orthogonal to the direction in which the rotary connecting portion 300 extends.

Further, although not particularly mentioned in the above embodiment, in a state where the operation unit 3 is switched to the raised state, the inclination angle of the rotary connecting unit 300 with respect to the outer surface of the housing 2 is set to be smaller. The rotary connecting portion 300 can be easily pushed down.

Further, in the fixed structure 205 of the above embodiment, the locked portion 205a is formed on the base portion 203 and the locking portion 205b is formed on the cover portion 204. For example, the locked portion 205a is formed on the cover portion 204. The locking portion 205b may be formed on the base portion 203. That is, in the fixed structure 205, the locked portion 205a may be formed on one of the base portion 203 or the cover portion 204, and the locking portion 205b may be formed on the other of the base portion 203 or the cover portion 204.

Further, in the above embodiment, the front wall portion 201 includes a pair of extending portions 201b arranged at intervals in the width direction, but the present invention is not limited to this configuration. For example, the front wall portion 201 may include one extension portion 201b, and the front wall portion 201 may include three or more extension portions 201b.

1 ... Syringe auxiliary tool, 2 ... Housing, 3 ... Operation part, 4 ... Removal member, 5 ... Extraction control part, 6 ... Acting mechanism, 7 ... Lock mechanism, 8 ... Syringe, 20 ... Housing body part, 21 ... Receiving part, 22 ... Positioning part, 23 ... Attached part, 24 ... Guide structure, 25 ... Biasing structure, 30 ... Lever part, 31 ... Acting connecting part, 40 ... Extruded part, 41 ... Guided part, 42 ... connecting part, 50 ... retaining recess, 51 ... retaining part, 52 ... connecting part, 70 ... hooked part, 71 ... hooking part, 80 ... syringe body, 81 ... barrel, 82 ... injection needle, 83 ... plunger, 84 ... Cap, 200 ... Circumferential wall, 201 ... Front wall, 201a ... Front wall body, 201b ... Extension, 201c ... Front wall recess, 202 ... Rear wall, 202a ... Rear wall recess, 202b ... Inside Wall surface, 203 ... Base part, 203a ... Base side long wall part, 203b ... Base side short wall part, 203c ... Inner plane, 203d ... Bottom part, 203e ... Side wall part, 203f ... Base side expansion part, 203g ... Base side throttle part, 203h ... Base side notch, 203i ... Base side first end edge, 203j ... Base side second end edge, 204 ... Cover part, 204a ... Covered wall part, 204b ... Hanging wall part, 204c ... Cover side long wall part, 204d ... Cover side short wall part, 204e ... Cover side expansion part, 204f ... Cover side throttle part, 204g ... Cover side notch, 204h ... Cover side first end edge, 204i ... Cover side second end edge, 204j ... Insertion notch , 204k ... Curved surface, 204l ... Detachment recess, 205 ... Fixed structure, 205a ... Locked part, 205b ... Locking part, 205c ... Front claw part, 205d ... Rear claw part, 205e ... Front locking hole , 205f ... Rear locking hole, 210 ... Bridge part, 211 ... Mounting part, 212 ... One end of receiving part, 230 ... Base side mounting shaft part, 231 ... Cover side mounting shaft part, 240 ... Guide groove, 241 ... Separation prevention part, 241a ... Standing piece, 241b ... Projecting piece, 250 ... Biasing member, 251 ... Fixed side mounting part, 251a ... Fixed side pressure receiving part, 251b ... Fixed side bearing shaft, 252 ... Movable side mounting part, 252a ... Movable side pressure receiving part, 252b ... Movable side mounting shaft, 300 ... Rotating connecting part, 300a ... Outer wall forming part, 300b ... Rib, 300c ... Insertion hole, 301 ... Pushing part, 301a ... Protruding part, 301b ... Extension Part, 310 ... Connecting plate part, 310a ... Connecting insertion hole, 400 ... Arrangement part, 400a ... Mounting surface part, 400b ... Standing part, 401 ... Extruded claw part, 410 ... Guided piece 411 ... Retracting piece, 420 ... Connecting piece part, 421 ... Connecting shaft part, 810 ... Barrel body part, 811 ... Nozzle part, 812 ... Ring part, 813 ... Flange, 830 ... Rod, 831 ... Gasket, 832 ... Head

Claims (2)

A syringe having a cylindrical barrel filled with an injection and an injection needle provided at one end in the axial direction of the barrel, and a cap attached to the syringe body so as to cover the injection needle. It is a syringe aid that is attached and used.
A housing in which the syringe body can be pulled out in a pulling direction orthogonal to the axial direction of the barrel, and a housing held by the user.
A removing member for removing the cap from the syringe body inserted into the housing, and
An extraction control unit that can regulate the extraction of the syringe body from the housing,
It is provided with an operation unit that is foldably attached to the housing and is configured to operate the removal member and the extraction control unit.
As the operating unit switches from the raised state caused to the housing to the pushed state pushed down to the housing, the removing member removes the cap from the syringe body and restricts the removal. The unit regulates the extraction of the syringe body from the housing,
As the operating unit switches from the pushed state to the raised state, the extraction restricting unit is configured to release the restriction on the extraction of the syringe body from the housing .
The removing member has an extruded claw portion that is arranged between the syringe body and the cap with the syringe body inserted into the housing.
The pushing pawl portion with the operating portion is switched to the押倒state from the cause state, syringe aid that will be configured to advance relative to the syringe body. A syringe having a cylindrical barrel filled with an injection and an injection needle provided at one end in the axial direction of the barrel, and a cap attached to the syringe body so as to cover the injection needle. It is a syringe aid that is attached and used.
A housing in which the syringe body can be pulled out in a pulling direction orthogonal to the axial direction of the barrel, and a housing held by the user.
A removing member for removing the cap from the syringe body inserted into the housing, and
An extraction control unit that can regulate the extraction of the syringe body from the housing,
It is provided with an operation unit that is foldably attached to the housing and is configured to operate the removal member and the extraction control unit.
As the operating unit switches from the raised state caused to the housing to the pushed state pushed down to the housing, the removing member removes the cap from the syringe body and restricts the removal. The unit regulates the extraction of the syringe body from the housing,
As the operating unit switches from the pushed state to the raised state, the extraction restricting unit is configured to release the restriction on the extraction of the syringe body from the housing.
The extraction restricting unit abuts on the tubular barrel body of the barrel in the syringe body inserted in the housing as the operating unit switches from the raised state to the pushed state. , A syringe assisting tool configured to move away from the barrel body of the barrel as the operating portion switches from the pushed state to the raised state.

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