JP2017189515A - Injector assist tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an injector assist tool having improved operability and configured to safely perform self-injection.SOLUTION: The injector assist tool attached to an injector including a cylindrical barrel to be filled with parenteral injection, an injector body having an injection needle provided at one end in an axial direction of the barrel, and a cap mounted on the injector body to cover the injection needle, comprises; a housing capable of extracting/inserting the injector body in an extraction/insertion direction orthogonal to the axial direction of the barrel; a removal member for removing the cap from the injector body inserted into the housing; a removal regulation part for regulating the removal of the injector body from the housing; and an operation part that can be raised/tilted with respect to the housing. The removal member and the removal regulation part are operated along with raising operation/tilting operation of the operation part with respect to the housing.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a syringe auxiliary tool used by being attached to a syringe when performing self-injection.

  Conventionally, a self-injection is performed in which a patient administers an injection to himself / herself using a syringe. A syringe used for self-injection is attached to the syringe body having a cylindrical barrel filled with an injection and a syringe body provided at one end in the axial direction of the barrel, and covering the syringe needle And a cap to be provided.

  When performing self-injection using the syringe, the patient removes the cap from the syringe body to expose the injection needle, and punctures the human body with 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, a syringe auxiliary tool is provided to enable a patient to perform self-injection easily and appropriately.

  Such a syringe auxiliary tool includes a main body in which the syringe is arranged, a cover part that is openable and closable with respect to the main body, and a removal mechanism part for removing the cap from the syringe main body (see, for example, Patent Document 1). ).

  The main body is configured to project the injection needle of the disposed syringe main body to the outside in accordance with an appropriate puncture depth.

  The cover part is rotatably connected to the main body, and is configured to switch between a closed state that covers the top of the main body and an open state that opens the top of the main body with rotation.

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

  When self-injection is performed using the syringe auxiliary tool, the patient switches the closed portion by rotating the cover portion after placing the syringe on the main body. 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 the injection needle protruding from the main body.

JP 2014-36879 A

  By the way, since the syringe auxiliary tool is configured to switch between an open state and a closed state by rotating the cover part, the patient operates the cover part with the other hand while holding the main body with one hand. And rotate it.

  Therefore, in the syringe auxiliary tool, the patient uses both hands each time the cover is opened and closed. Therefore, the operator is required to perform a series of operations from fixing the syringe to the main body to taking out the syringe after injection. Even the main body had to be changed.

  Further, in the syringe auxiliary tool, since the cover is closed and the cap is removed from the syringe body, the injection needle continues to be exposed from the time when the syringe is set between the body and the cover portion, and lacks safety. It was.

  Then, this invention makes it a subject to provide the syringe auxiliary tool which can be operated easily and can perform self-injection safely in view of such a situation.

  The syringe auxiliary tool of the present invention is mounted on the syringe body having a cylindrical barrel filled with an injection and a syringe body provided at one end in the axial direction of the barrel, and covering the syringe needle A syringe auxiliary tool used by being attached to a syringe having a cap to be inserted, wherein the syringe body can be inserted / removed in the insertion / removal direction perpendicular to the axial direction of the barrel, and inserted into the housing A removal member for removing the cap from the syringe body, a removal restricting portion capable of restricting the removal of the syringe body from the housing, and a removably attached to the housing An operation part configured to operate the material and the extraction restricting part, and the operation part is switched from a raised state caused to the housing to a pushed state pushed against the housing. Along with the change, the removal member removes the cap from the syringe body and the removal restricting portion restricts the removal of the syringe body from the housing, and the operation portion changes from the depressed state to the pulled state. The switching restriction part is configured to release the restriction on the extraction of the syringe main body from the housing as the switching is performed.

  The syringe auxiliary tool having the above-described configuration includes a removal restricting portion capable of restricting extraction of the syringe body from the housing in accordance with a push-down operation and a pulling operation of the operation portion that is attached to the housing in a tiltable manner, and the housing Since the removal member for removing the cap from the syringe body of the syringe inserted into the body is operated, the patient can hold the syringe with one hand while holding the syringe in the housing. A series of operations from insertion to removal of the syringe body after injection can be performed.

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

  In addition, as the operation unit switches from the pulled-up state to the pushed-down state, the syringe auxiliary tool removes the cap from the syringe main body and the extraction restricting unit restricts removal of the syringe main body from the housing. Therefore, 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 auxiliary 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 into the human body).

  In the syringe auxiliary tool according to the present invention, the casing is configured to protrude the injection needle from one end in the axial direction, and the operation unit is rotatably attached to the casing. And a lever portion configured to extend from an attachment position to the housing, and a distal end portion of the lever portion is disposed on the other end side of the housing in the axial direction from the attachment position. You may be made to do.

  According to such a configuration, the distal end portion of the lever portion is arranged on the other end side opposite to the one end side on which the injection needle protrudes from the housing, so that the patient places the little finger along the little finger on the one end side of the housing. In a state where the housing is gripped, the tip of the lever portion can be disposed near the thumb or index finger. Therefore, in the said syringe auxiliary tool, when a patient performs self-injection, the pushing-down operation and pulling-up operation of an operation part can be performed easily.

  In the syringe auxiliary tool according to the present invention, the operation unit may be configured to be gradually separated from the housing as the lever unit moves from the mounting position to the tip side in the pulled-up state with respect to the outer surface of the housing. And may be configured to be inclined.

  According to this configuration, since the opening angle of the lever portion with respect to the housing can be suppressed in a state where the operation portion is switched to the pulled-up state, the operation portion can be easily pushed down while the patient holds the housing. be able to.

  Furthermore, in the syringe auxiliary tool according to the present invention, the operation portion is configured such that, in the depressed state, the distal end portion of the lever portion is disposed at a position protruding from the other end of the housing in the axial direction. It may be.

  According to such a configuration, when the operation unit is in the pushed down state, the distal end portion of the lever portion is arranged at a position protruding from the other end of the housing in the axial direction, so the operation unit is switched from the pushed down state to the pulled up state. In this case, the tip of the lever portion can be easily operated.

  As described above, according to the syringe auxiliary tool of the present invention, an excellent effect that it is easy to use and can safely perform self-injection can be obtained.

FIG. 1 is a perspective view of a syringe auxiliary tool according to an embodiment of the present invention. FIG. 2 is a plan view of the syringe assisting tool according to the embodiment. FIG. 3 is an exploded view of the syringe auxiliary tool according to the embodiment, and is an exploded view when the operation unit is in a raised state. FIG. 4 is an exploded view of the syringe assisting tool according to the embodiment, and is an exploded view when the operation unit is in a depressed state. FIG. 5 is a cross-sectional view of the syringe auxiliary tool according to the embodiment, and is a cross-sectional view of only the housing taken along the line V-V in FIG. 2. FIG. 6 is a cross-sectional view of the syringe auxiliary tool according to the embodiment, and is a cross-sectional view taken along the line VI-VI in FIG. 2. FIG. 7 is a plan view of a base portion of the syringe assisting tool according to the embodiment. FIG. 8 is a plan view of the cover part of the syringe assisting tool according to the 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 auxiliary tool according to the embodiment, and is an explanatory view showing a state in which the syringe is inserted into the housing. FIG. 11 is an explanatory diagram of the syringe assisting tool according to the embodiment, and is an explanatory diagram of a state where the operation unit is switched to a depressed state. FIG. 12 is an explanatory diagram of the syringe auxiliary tool according to the embodiment, and is an explanatory diagram of a state in which the operation unit is switched to the pulled-up state. FIG. 13 is a plan view of a syringe to which a syringe auxiliary tool according to the embodiment is attached.

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

  Prior to the description of the syringe auxiliary tool, the syringe will be described. As shown in FIG. 13, the syringe includes a syringe body 80 that is used to administer an injection to the human body.

  The syringe body 80 is inserted from the other end of the barrel 81, a cylindrical 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 And a plunger 83 configured to be movable in the axial direction.

  The barrel 81 includes a cylindrical 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. An annular portion 812 that is connected to one end in the direction and surrounds the nozzle portion 811, and a flange portion 813 that protrudes radially outward from the entire outer periphery 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 includes a rod-shaped rod 830, a gasket 831 that is fixed to one end in the longitudinal direction of the rod 830 and closely contacts the entire inner peripheral surface of the barrel main body 810, and the other end in the longitudinal direction of the rod 830. And a head 832 provided.

  The syringe 8 further 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 on the syringe main body 80 by being externally fitted to the annular portion 812. The syringe 8 is configured such 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 auxiliary tool has a housing 2 in which the syringe main body 80 can be inserted and removed in a direction orthogonal to the axial direction (outward direction of the barrel 81), and the housing 2. The operation unit 3 that can be tilted up and down, the removal member 4 for removing the cap 84 from the syringe main body 80, the extraction regulating unit 5 that can regulate the removal of the syringe main body 80 from the housing 2, and the housing The operation mechanism 6 (see FIGS. 3 and 4) for operating the removal member 4 and the extraction restricting portion 5 in conjunction with the push-down operation and the pulling operation of the operation portion 3 with respect to 2 and the pulling operation of the operation portion 3 can be locked. And a lock mechanism 7 (see FIG. 4).

  In the present embodiment, the direction in which the syringe main body 80 is inserted into and removed from the housing 2 in the radially outward direction of the barrel 81 is the insertion / extraction direction, and the direction orthogonal to each of the axial direction and the insertion / extraction direction is the width direction. The following explanation will be given.

  As shown in FIGS. 1 and 2, the housing 2 includes a housing body portion 20 in which an arrangement space that opens in the axial direction and a direction orthogonal to the axial direction is formed, and a syringe main body that is inserted into the arrangement space. Receiving portion 21 for receiving 80, positioning portion 22 for restricting the movement of the syringe main body 80 inserted in the arrangement space in the axial direction, and a body formed on the housing main body portion 20 and to which the operation portion 3 is attached. And an attachment portion 23 (see FIG. 5).

  The housing 2 is attached with a guide structure 24 for guiding the removing member 4 in the axial direction in the housing main body 20 (see FIG. 7), and the removing member 4 is directed toward one side in the axial direction. And an urging structure 25 for urging (see FIG. 6).

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

  The casing body 20 according to the present embodiment is formed at a peripheral wall portion 200 formed to be rounded in a circumferential direction centering on the axial direction, and at one end (front end) of the peripheral wall portion 200 in the axial direction. 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 includes a base portion 203 having a curved shape so as to bulge downward, and a cover portion 204 attached on the base portion 203.

  As shown in FIG. 7, the base portion 203 includes a base-side long wall portion 203a that extends from the rear wall portion 202 toward the front wall portion 201, and a direction from the base-side long wall portion 203a toward the front wall portion 201 side. And a base-side short wall portion 203b extending.

  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 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 extends upward from the bottom portion 203d and curves so as to bulge toward the outside of the housing body 20 (curved so as to bulge in a direction away from each other in the width direction). doing).

  The side wall 203e according to the present embodiment includes a base-side extension 203f that extends from the rear wall 202 toward the front wall 201 and has a larger outer shape, and a front-side wall 201 side from the base-side extension 203f. And a base-side restricting portion 203g having a reduced outer shape.

  The distance between the pair of base-side extended portions 203f gradually increases from the base end portion (the end portion continuing to the rear wall portion 202) side to the tip end portion (the end portion continuing to the base-side narrowing portion 203g) side. It is formed as follows. Accordingly, in the pair of base side extension portions 203f, the outer surfaces are inclined so as to gradually spread to the outside of the housing main body portion 20 from the proximal end side to the distal end side.

  A cutout (hereinafter referred to as a base-side cutout) 203h is formed on the base end side of one base-side extended portion 203f according to the present embodiment. The base-side notch 203h includes a base-side first end edge 203i extending along the axial direction from the base end of one base-side extension portion 203f, and a base-side second end edge orthogonal to the base-side first end edge 203i. 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 restricting portions 203g are formed so as to incline toward the inside of the housing main body portion 20 from the proximal end side toward the distal end side. Accordingly, in the pair of base side restricting portions 203g, the outer surfaces are inclined so as to go to 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 204 a that are spaced apart from each other in the width direction, and a pair of hanging wall portions 204 b that hang down from the covering wall portion 204 a. And have.

  The covering wall portion 204a includes a cover side long wall portion 204c extending from the rear wall portion 202 toward the front wall portion 201, 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 part 204c is curved so as to approach each other as it goes upward from a position corresponding to the tip of the base side long wall part 203a.

  Note that the cover-side long wall portion 204c according to the present embodiment includes a cover-side extension portion 204e that extends from the rear wall portion 202 toward the front wall portion 201 side and has an increased outer shape, and a front-side wall portion from the cover-side extension portion 204e The cover side restricting portion 204f extends to the 201 side and has a reduced outer shape.

  The pair of cover side extended portions 204e gradually increase in distance from the base end portion (end portion continuing to the rear wall portion 202) side to the distal end portion (end portion continuing to the cover side narrowing portion 203f) side. It is formed as follows. Accordingly, the outer surfaces of the pair of cover side extension portions 204e are inclined so as to gradually spread to the outside of the housing main body portion 20.

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

  Each cover-side extension 204e is formed with a notch (hereinafter referred to as an insertion notch) 204j at the upper end of the base end of the cover-side extension 204e. Thereby, 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 to face the base side first end edge 203i in the insertion / removal direction, and the cover side second end edge 204i is the base side second end in the insertion / removal direction. It arrange | positions so that the edge 203j may be followed. Therefore, in the peripheral wall 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.

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

  The cover side restricting portion 204f extends from the tip of the cover side extending portion 204e to the front wall portion 201 side. The pair of cover side restricting 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. Accordingly, the outer surfaces of the pair of cover side narrowing portions 204f are inclined toward the inner side 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 to extend across a part of the cover side long wall portion 204c and the cover side short wall portion 204d. Furthermore, in this embodiment, the recessed part 204l for exit / retreat is formed in one drooping wall part 204b (refer FIG. 9).

  The front wall portion 201 is formed integrally with the cover portion 204, and is a portion that abuts against the human body when injection is performed. As shown in FIG. 1, the front wall portion 201 includes a front wall main body portion 201 a aligned with the peripheral wall portion 200 in the axial direction, and a pair of extensions extending outward from the peripheral wall portion 200 from the front wall main body portion 201 a. And a protruding portion 201b.

  The front wall main body 201a is formed with a concave portion that curves downwardly. Moreover, the recessed part of the front wall main-body part 201a is formed in the position corresponding to the space between the coating | coated wall parts 204a in the said axial direction.

  The pair of extending portions 201b are arranged so as to be arranged at intervals in the width direction. Moreover, in the front wall part 201 which concerns on this embodiment, it is comprised so that the space | interval between a pair of extension part 201b and the width | variety (width in the said width direction) of the recessed part of the front wall main-body part 201a may respond | correspond. ing.

  Further, the front wall portion 201 is formed with a front wall-side recess 201c extending upward in the axial 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 formed integrally with the cover portion 204. As shown in FIG. 6, the rear wall 202 is a rear wall-side recess 202 a that opens upward in the insertion / removal direction, and communicates with a space between the covering walls 204 a in the axial direction. A wall-side recess 202a is formed.

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

  Here, the housing body 20 according to the present embodiment further includes a fixing structure 205 for fixing the cover unit 204 on the base unit 203. The fixing structure 205 includes a locked portion 205a formed on the base, and a locking portion 205b that fixes the cover portion 204 on the base portion 203 by being locked to the locked portion 205a.

  The locked portion 205a includes a front claw portion 205c extending from the distal end 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. Two front claw portions 205c are formed at the tip of the base-side short wall portion 203b with a gap in the width direction (see FIG. 7).

  The locking portion 205b includes 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 spaced from each other in the width direction (see FIG. 8).

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

  As shown in FIGS. 8 and 9, the receiving portion 21 is arranged at an interval in the width direction, and at the upper end of the covering wall portion 204 a (in this embodiment, the upper end of the cover-side long wall portion 204 c). It has a pair of bridge | crosslinking part 210 provided in series, and the mounting part 211 continuous to each of this bridge | crosslinking part 210. FIG.

  The bridging portion 210 is suspended from the upper end of the covering wall portion 204a. The interval between the bridging portions 210 in the width direction corresponds to the interval 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 provided continuously with the bridging 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 such that a gap is formed between the receiving portion 21 and the rear wall portion 202 in the axial direction. Yes. Further, a 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 bridge portion 210 and the rear wall portion 202 and between the placement portion 211 and the rear wall portion 202.

  Thus, when the receiving part 21 receives the syringe main body 80, the housing 2 has the flange part 813 of the syringe main body 80 between the one end 212 of the receiving part 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 restricted. Therefore, the positioning part 22 according to the present embodiment is constituted by the inner wall surface of the rear wall part 202 and the one end 212 of the receiving part 21.

  As shown in FIG. 5, the attached portion 23 according to the present embodiment includes an attachment shaft portion (hereinafter referred to as a base-side attachment shaft portion) 230 formed on the base portion 203 and an attachment shaft formed on the cover portion 204. Part (hereinafter referred to as a cover-side attachment 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 insertion / removal direction. Further, the base-side mounting shaft portion 230 and the cover-side mounting shaft portion 231 are formed so that the axial directions thereof correspond to the above-described insertion / removal directions.

  The guide structure 24 is configured to guide the removal member 4 disposed 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 includes a guide groove 240 formed on the inner flat surface 203 c of the bottom portion 203 d so as to extend straight in the axial direction, and the removal member 4. A separation preventing portion 241 for preventing separation of the bottom portion 203d from the inner plane 203c is configured.

  One separation preventing portion 241 is formed on each side of the guide groove 240 in the width direction. As shown in FIG. 5, each separation preventing portion 241 has an upright piece 241a that rises from the inner plane 203c of the bottom portion 203d, and a protruding piece 241b that protrudes from the upright piece 241a toward the adjacent upright piece 241a. The standing 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 removal 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 base body 203 and the urging member 250 disposed in the housing body 20 so as to expand and contract in the axial direction. It has a fixed-side attachment portion 251 to which one end in the extension / contraction direction is attached, and a movable-side attachment portion 252 that is formed on the removal member 4 and to which the other end in the extension / contraction direction of the biasing member 250 is attached.

  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 away from each other in the axial direction.

  The fixed-side mounting portion 251 includes a fixed-side pressure receiving portion 251a standing in the base portion 203, and a fixed-side mounting shaft 251b extending from the fixed-side pressure receiving portion 251a toward the movable-side mounting portion 252 in the axial direction. Have

  The movable side mounting portion 252 includes 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. And an attachment shaft 252b. Therefore, the fixed-side pressure receiving portion 251a and the movable-side pressure receiving portion 252a are constantly urged by the urging member 250 in a direction away from each other in the axial direction.

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

  The lever part 30 is connected to a rotary connecting part 300 having a base end rotatably attached to the housing 2 and a tip disposed on the other end of the housing 2, and is connected to the tip of the rotating connecting part 300. And a push / pull portion 301.

  As shown in FIG. 4, the rotary connecting portion 300 includes an outer wall forming portion 300 a configured to close the mounting concave portion in a state where the operation portion 3 is switched from the pulled-up state to the pushed-down state, and the outer wall in the plugging direction. A pair of ribs 300b extending from both ends of the forming portion 300a toward the inside of the housing 2;

  The rotation connecting part 300 is formed such that the outer surface is curved corresponding to the outer surface of the peripheral wall part 200. Therefore, when the operation unit 3 is switched from the pulled-up state to the pushed-down state, the outer surface of the rotary connecting unit 300 is disposed at a position corresponding to or substantially corresponding to the outer surface of the peripheral wall 200, and the operation unit 3 is lifted from the pushed-down state. When switched to the state, it is arranged to be inclined with respect to the outer surface of the housing 2.

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

  The push-pull unit 301 is configured such that when the operation unit 3 is switched to the pushed-down state, the extended portion 301b protrudes rearward from the rear wall 202 in the axial direction.

  As shown in FIG. 5, each rib 300b is formed with an insertion hole 300c penetrating in the insertion / removal direction. The base side attachment shaft portion 230 is inserted into the insertion hole 300c of the one rib 300b. The cover side mounting shaft portion 231 is inserted through the insertion hole 300c of the other rib 300b. Therefore, the operation part 3 attached to the to-be-attached part 23 can rotate in the circumferential direction centering on the virtual axis line extended along the said insertion / extraction direction.

  As shown in FIG. 4, the operation connecting portion 31 includes a flat connecting plate portion 310 formed in the lever portion 30. The connecting plate portion 310 is formed with a connecting insertion hole 310a penetrating in the insertion / removal direction. The connection insertion hole 310a is constituted by a long hole formed in the connection plate portion 310, and a connection shaft portion 421 described later is inserted therethrough.

  The detachable member 4 can reciprocate in the axial direction within the housing 2, and is moved from the syringe body 80 to the cap along with the movement in the axial direction (movement from the rear wall 202 side to the front wall side). 84 is configured to be removed.

  The detaching member 4 includes an extruding portion 40 for pushing the cap 84 in the axial direction, and a guided portion 41 that is connected to the extruding portion 40 and guided to the guide structure 24 in the axial direction within the housing 2. (Refer to FIG. 5), and a connecting portion 42 for interlocking the movement of the operation portion 3 with the movement of the pushing portion 40.

  The extruding unit 40 includes an arrangement part 400 in which one end side of the barrel main body part 810 is arranged, and an extruding claw part 401 arranged between the barrel main body part 810 arranged in the arrangement part 400 and the cap 84.

  The placement portion 400 is a pair of placement surface portions 400a on which the barrel main body portion 810 is placed in the insertion / extraction direction, and a pair of arrangement portions that stand from the placement surface in the insertion / extraction direction and are spaced from each other in the width direction. The upright portion 400b.

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

  One push-out claw 401 is formed on each standing part 400b. Each extrusion nail | claw part 401 is arrange | positioned so that it may adjoin by the said width direction. Moreover, each extrusion nail | claw part 401 protrudes in the direction which mutually approaches from the standing part 400b. The interval between the push-out 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 includes a guided piece 410 that protrudes in the removal direction and a pair of retaining pieces 411 that extend 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 disposed in the guide groove 240.

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

  As shown in FIG. 4, the connecting portion 42 includes a connecting piece portion 420 that is connected to the pushing portion 40, and a connecting shaft portion 421 that protrudes from the connecting piece portion 420. The connecting shaft portion 421 is disposed at a position outside the region corresponding to the pushing portion 40 in the axial direction.

  The sampling restricting portion 5 is configured to switch between a state where it has advanced from the inside of the housing 2 to the covering wall portion 204a through a recess and a recess, and a state where it has been retracted into the housing 2 from between the covering wall portions 204a. Since the extraction restricting portion 5 is erected on the connecting plate portion 310, the extraction restricting portion 5 is retracted into the housing 2 and the state where the operation portion 3 is advanced between the covering wall portions 204 a when the operation portion 3 is switched to the depressed state or the raised state. Switch to the completed state.

  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 main body portion 810. It is comprised so that it may contact | abut the part ranging from the lower part of 810 to a side part and an upper part.

  The extraction restricting portion 5 according to the present embodiment includes a pair of retaining portions 51 arranged at intervals in the withdrawing / inserting direction, and a connecting portion 52 continuous to each of the pair of retaining portions 51.

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

  The actuating mechanism 6 is configured to link the push-down operation or pull-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 operation mechanism 6 according to the present embodiment is configured by an operation connection portion 31 of the operation unit 3 and a connection portion 42 of the removal member 4.

  The lock mechanism 7 has a pulling lock structure that can lock the pulling operation of the operation unit 3 that has been switched to the depressed state.

  As shown in FIG. 4, the pulling lock structure includes a hooked portion 70 formed in the housing 2, and a hooking portion 71 configured to be hooked on the hooked portion 70 and formed on the lever portion 30. Have

  The hooked portion 70 is formed in the housing body 20. Further, the hooked portion 70 is formed in a shaft shape, and is configured such that the axial direction corresponds to the above-described insertion / removal direction. The hooked portion 70 according to the present embodiment is formed so as to extend from the base portion 203 in the insertion / removal direction.

  The hook portion 71 is formed on one rib 300b. If it demonstrates more concretely, the hook part 71 will be comprised by the recessed part which can be inserted in the to-be-hooked part 70 and is formed in one rib 300b.

  Therefore, the pulling lock structure is configured to lock the pulling operation of the operation unit 3 when the hooked portion 70 is fitted in the recess that forms the hooking portion 71.

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

  The syringe auxiliary tool 1 according to the present embodiment has the above configuration. Then, the usage method of the syringe auxiliary tool 1 is demonstrated.

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

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

  Accordingly, 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 the one end 212 of the receiving portion 21, and the syringe main body 80. Is restricted from moving in the axial direction. More specifically, when the syringe main body 80 tries to move to the front wall side, the flange portion 813 is caught by one end 212 of the receiving portion 21, and when it tries to move to the rear wall side, the flange portion 813 is moved to the rear wall. Since it is hooked on the inner wall surface, 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 main body 810 is inserted between the covering wall portions 204a, and the cap 84 is inserted into the front wall side recess 201c. The pushing claw 401 is inserted into the gap between the syringe body 80 (barrel body 810) and the cap 84. In this way, the syringe 8 is set in the syringe auxiliary tool 1.

  Subsequently, as shown in FIG. 10, the patient grasps the housing 2 with the index finger attached to the rear end side of the peripheral wall 200 and the little finger attached to the front end of the peripheral wall 200.

  Then, as shown in FIG. 11, when the operation unit 3 is switched from the pulled-up state to the pushed-down state in accordance with the timing at which 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 extended portion 301 b of the push-pull portion 301 toward the housing 2 with the thumb, the lever portion 30 rotates around the attachment position to the housing 2. In this embodiment, the lever part 30 rotates in the circumferential direction centering on the axial direction of the base side attachment shaft part 230 and the cover side attachment shaft part 231.

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

  At this time, the extraction restricting portion 5 advances from the inside of the housing 2 to the space between the covering wall portions 204a, so that one of the retaining portions 51 is disposed above the barrel main body portion 810. Thereby, extraction of the syringe main body 80 from the housing | casing 2 is controlled.

  Further, the removal member 4 moves from the rear wall side to the front wall side in the axial direction, so that the push-out 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 removed from the syringe body 80. In this way, the syringe 8 set in the syringe auxiliary tool 1 is ready for self-injection.

  When the operation unit 3 is switched from the pulled-up state to the pushed-down state, the hooked portion 70 is inserted into the recess that forms the hooking portion 71. The fixed pressure receiving portion 251a and the movable pressure receiving portion 252a are always urged by the urging member 250 in a direction away from each other in the axial direction, but remain in the hooked portion 71 on the hooked portion 70. As a result, the pulling operation of the operation unit 3 is locked. Therefore, the switching of the operation unit 3 from the depressed state to the pulled-up state is locked.

  Then, the patient grasps the housing 2 so as to hold the upper portion of the cover portion 204 with the thumb, punctures the injection needle 82 at the injection site, and brings the front wall portion 201 into contact with the human body. When the head 832 of the plunger 83 is pushed in this state, 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-down state to the pulled-up state, the extraction regulating unit 5 is retracted into the housing 2 from between the covering wall portions 204a, and the syringe body 80 is ready to be removed from the housing 2.

  In the present embodiment, when the thumb is hooked on the extended portion 301 b of the push-pull portion 301 and pulled away from the housing, the operation connecting portion 31 rotates together with the lever portion 30, and interlocks with the rotation of the operation connecting portion 31. Thus, the extraction restricting portion 5 and the removal member 4 are operated. Then, the operation 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 performs self-injection by puncturing the human body with the injection needle 82 protruding from the front end of the housing 2 in the axial direction and further pushing the plunger 83 with the thumb.

  When the push-pull portion 301 is pulled up with the thumb of the hand holding the housing 2 after self-injection and the hook portion 71 is removed from the hooked portion 70, the operation portion 3 is switched from the depressed state to the pulled-up state. At the same time, the extraction restricting portion 5 is retracted into the housing 2 from between the covering wall portions 204a through the recesses. As a result, the syringe body 80 can be removed from the housing 2.

  As described above, the syringe auxiliary tool 1 according to the present embodiment is provided with the syringe body 80 from the housing 2 in accordance with the push-down operation or the pull-up operation of the operation unit 3 attached to the housing 2 so as to be able to be tilted. Since the extraction restricting portion 5 that can restrict extraction and the removal member 4 for removing the cap 84 from the syringe main body 80 of the syringe 8 inserted into the housing 2 are configured to operate, the patient can While holding the housing 2 with one hand, a series of operations from insertion of the syringe 8 into the housing 2 to removal of the syringe body 8 after injection can be performed.

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

  In addition, the syringe auxiliary tool 1 is configured such that the removal member 4 removes the cap 84 from the syringe main body 80 and the extraction restricting portion 5 from the casing 2 as the operation unit 3 switches from the pulled-up state to the pushed-down state. Since it is configured to restrict the withdrawal of 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 auxiliary 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 into the human body).

  Furthermore, in the syringe auxiliary tool 1 according to the present embodiment, since the biasing structure 25 indirectly biases the operation unit 3 to switch to the pulling state, the operation unit 3 is in the pulling state at a timing not intended by the patient. Is prevented from being switched to a depressed state.

  Moreover, in the syringe auxiliary tool 1 according to the present embodiment, the lock mechanism 7 prevents the operation unit 3 from being switched from the depressed state to the pulled-up state at a timing not intended by the patient. Therefore, the syringe auxiliary tool 1 according to the present embodiment prevents the syringe main body 80 from dropping from the housing 2 and the cap 84 from being removed from the syringe main body 80 at a timing not intended by the patient.

  Thus, the syringe auxiliary tool 1 is easy to operate and can safely perform self-injection.

  Furthermore, in the present embodiment, the distal end portion of the lever portion 30 is disposed on the other end side opposite to the one end side on which the injection needle 82 projects from the housing 2, so that the patient is on the front end side of the housing 2. In a state where the housing 2 is gripped along the little finger, the tip of the lever portion 30 can be disposed near the thumb or index finger. Therefore, in the syringe auxiliary tool 1, when the patient performs the self-injection, the push-down operation or the pull-up operation of the operation unit 3 can be easily performed.

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

  And the lever part 30 (outer surface of the rotation connection part 300) becomes the attitude | position inclined with respect to the outer surface of the housing | casing 2 in the state in which the operation part 3 was switched to the raising state (specifically, the lever part 30). Is inclined with respect to the outer surface of the housing 2 so as to be gradually separated from the housing 2 as the position becomes the tip side from the mounting position. Thus, the operation unit 3 can be easily pushed down with the patient grasping the housing 2.

  In addition, the syringe auxiliary tool 1 according to the present embodiment is not limited to the above-described one embodiment, and it is needless to say that various changes are made without departing from the gist of the present invention.

  In the said embodiment, although the housing | casing 2 was formed so that an outer diameter might differ in each position in the said axial direction, it is not limited to this structure. For example, the housing 2 may be formed so that the outer diameter is the same at each position in the axial direction.

  In the above-described embodiment, in the case body 20, the front wall 201 and the rear wall 202 are integrally formed with respect to the cover 204 to form a single member (hereinafter referred to as a cover body). Although the cover body is attached to the base portion, it is not limited to this configuration. For example, in the case body 20, the front wall 201 may be formed integrally with the base 203, and the rear wall 202 may be formed integrally with the base 203.

  In the above embodiment, the urging member 250 indirectly urges the operation unit 3, but is not limited to this configuration, and may urge the operation unit 3 directly, for example.

  In the urging structure 25 according to the above-described embodiment, the urging member 250 urges the detaching member 4 so as to push the removal member 4 from the front wall side toward the rear wall side, but the configuration is not limited thereto. For example, in the urging structure 25, the urging member 250 may be arranged between the rear wall and the removal member 4, and may be configured to pull the removal member 4 toward the rear wall.

  In this case, the urging member 250 may be configured by 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 with respect to the removal member 4. . As described above, the urging structure 25 may be configured such that the urging member 250 urges the detaching member 4 to be pulled toward the rear wall.

  Moreover, in the said embodiment, although the operation part 3 became the shape where the pushing / pull part 301 was bent, it is good also as a shape extended straightly, for example. In this case, the push / pull portion 301 may be formed 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.

  Although not particularly mentioned in the above embodiment, the inclination angle with respect to the outer surface of the rotary connecting portion 300 with respect to the outer surface of the housing 2 is set to be smaller when the operation unit 3 is switched to the pulled-up state. It is possible to facilitate the push-down operation of the rotary connecting portion 300.

  In the fixing structure 205 in 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. In other words, the fixing structure 205 may be such that the locked portion 205 a is formed on one of the base portion 203 or the cover portion 204 and the locking portion 205 b is formed on the other of the base portion 203 or the cover portion 204.

  Moreover, in the said embodiment, although the front wall part 201 was provided with a pair of extension part 201b arrange | positioned at intervals in the said width direction, it is not limited to this structure. For example, the front wall portion 201 may include one extending portion 201b, and the front wall portion 201 may include three or more extending portions 201b.

  DESCRIPTION OF SYMBOLS 1 ... Syringe auxiliary tool, 2 ... Housing | casing, 3 ... Operation part, 4 ... Removal member, 5 ... Extraction control part, 6 ... Actuation mechanism, 7 ... Locking mechanism, 8 ... Syringe, 20 ... Housing | casing main-body part, 21 DESCRIPTION OF SYMBOLS ... Reception part, 22 ... Positioning part, 23 ... Mounted part, 24 ... Guide structure, 25 ... Energizing structure, 30 ... Lever part, 31 ... Actuation connection part, 40 ... Extrusion part, 41 ... Guided part, 42 ... Connecting part, 50 ... Stopping recess, 51 ... Stopping part, 52 ... Connection part, 70 ... Hooked part, 71 ... Hooking part, 80 ... Syringe body, 81 ... Barrel, 82 ... Injection needle, 83 ... Plunger, 84 DESCRIPTION OF SYMBOLS ... Cap, 200 ... Peripheral wall part, 201 ... Front wall part, 201a ... Front wall main body part, 201b ... Extension part, 201c ... Front wall side recessed part, 202 ... Rear wall part, 202a ... Rear wall side recessed part, 202b ... Inside Wall surface, 203 ... base part, 203a ... base side long wall part, 203b ... base side short wall part, 03c ... inner plane, 203d ... bottom, 203e ... side wall part, 203f ... base side expansion part, 203g ... base side narrowing part, 203h ... base side notch, 203i ... base side first edge, 203j ... base side second end Edge 204, cover portion 204a, covering wall portion 204b, hanging wall portion 204c, cover side long wall portion 204d, cover side short wall portion 204e, cover side extension portion, 204f ... cover side narrowing portion 204g ... Cover-side notch, 204h: first end edge on cover side, 204i ... second end edge on cover side, 204j ... notch for insertion, 204k ... curved surface, 204l ... recessed part for exit / retreat, 205 ... fixing structure, 205a ... engaged Stop part, 205b ... locking part, 205c ... front claw part, 205d ... rear claw part, 205e ... front side locking hole, 205f ... rear side locking hole, 210 ... bridging part, 211 ... mounting part, 212 ... Receiving 230: Base side mounting shaft portion, 231: Cover side mounting shaft portion, 240 ... Guide groove, 241 ... Separation preventing portion, 241a ... Standing piece, 241b ... Projection piece, 250 ... Biasing member, 251 ... Fixed Side mounting portion, 251a ... fixed side pressure receiving portion, 251b ... fixed side receiving shaft, 252 ... movable side mounting portion, 252a ... movable side pressure receiving portion, 252b ... movable side mounting shaft, 300 ... rotation connecting portion, 300a ... outer wall forming portion , 300b ... ribs, 300c ... insertion holes, 301 ... push / pull parts, 301a ... projecting parts, 301b ... extension parts, 310 ... connecting plate parts, 310a ... insertion holes for connections, 400 ... placement parts, 400a ... mounting Surface portion, 400b ... Standing portion, 401 ... Extrusion claw portion, 410 ... Guided piece, 411 ... Stopping piece, 420 ... Connection piece portion, 421 ... Connection shaft portion, 810 ... Barrel body portion, 811 ... Nozzle portion, 812 ... Annular Part 813 ... Flange part, 830 ... Rod, 831 ... Gasket, 832 ... Head

Claims (4)

  A syringe having a cylindrical barrel filled with an injection and a syringe body having 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 syringe needle A syringe auxiliary tool that is attached and used, wherein a housing in which the syringe main body can be inserted / removed in an insertion / removal direction orthogonal to the axial direction of the barrel, and the cap is removed from the syringe main body inserted into the housing For removing the syringe main body from the housing, and a detachable member attached to the housing in a tiltable manner and operating the detaching member and the withdrawal regulating portion. An operation unit configured to cause the operation unit to switch from a pulled-up state caused to the housing to a pushed-down state pushed against the housing. As the member removes the cap from the syringe body and the removal restricting portion restricts the removal of the syringe body from the housing, the removal restriction as the operation portion switches from the depressed state to the pulled-up state. A syringe auxiliary tool configured to release a restriction on extraction of the syringe body from the housing.   The casing is configured to project the injection needle from one end in the axial direction, and the operation unit is rotatably attached to the casing, and from an attachment position to the casing. The syringe assist according to claim 1, further comprising a lever portion configured to extend, wherein a distal end portion of the lever portion is disposed on the other end side of the housing in the axial direction with respect to the attachment position. Ingredients.   The operation unit is in the tilted state with respect to the outer surface of the housing so that the lever portion gradually moves away from the housing as the lever portion moves from the mounting position to the distal end side in the pulled-up state. The syringe assisting tool according to claim 2 configured.   The syringe operation tool according to claim 2 or 3, wherein, in the pushed state, the operation portion is disposed at a position where a tip end portion of the lever portion protrudes from the other end of the housing in the axial direction.

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