JP2015144637A - puncture aid and puncture instrument set - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a puncture aid and a puncture instrument set that can facilitate a subcutaneous injection by oneself to the skin of an elbow joint extending side part of an elbow.SOLUTION: A puncture aid has: at least three holding parts openably combined with at least another one; a biasing part for biasing the at least three holding parts to at least another one in the direction of closing to each other; a pair of opening knob parts capable of operating the at least three holding parts to at least another one in the direction of opening to each other; and a syringe insertion part formed in a tubular shape opening toward a center position of the at least three holding parts, and allowing a syringe to be inserted thereto. Also, a puncture instrument set has the puncture aid and the syringe inserted into the syringe insertion part.

Description

  The present invention relates to a puncture assisting device and a puncture device set that can be used when a drug is injected subcutaneously.

  Conventionally, when a drug (medicine solution) is injected subcutaneously, a puncture device is used that is provided with a needle that is punctured into the skin and in which the drug is injected into the skin or subcutaneously (for example, Patent Documents). 1).

  When a drug is injected subcutaneously using such a puncture device, it is easy to administer the drug because the injection site is wide and easy to see, and the skin is picked when puncturing the needle of the puncture device. For reasons such as ease, the upper arm, abdomen, thigh, buttocks and the like have been mainly selected.

  However, many of these sites cannot stretch the skin so much, and it is usually said that the upper limit of the amount of drug that can be administered is 1 ml. In addition, even if the amount of drug to be administered is limited, invasion caused by the administered drug compressing the free nerve endings of the subcutaneous nerves, and intense pain will occur due to the characteristics of the drug (pH and surfactant) . Subcutaneous injection is basically performed without anesthesia, and since many drugs require many continuous injections, it has been required to reduce pain during injection.

  In view of this, a method has been proposed in which, instead of the above-described site, subcutaneous injection is performed on the skin of the elbow joint extension side of the elbow. The skin of the elbow joint extension side of the elbow is easier to stretch than other parts of the skin, and because there are no major anatomical nerves or blood vessels, it is less painful than other parts. Large amounts of drugs can be injected subcutaneously.

JP 2008-295590 A

  In recent years, the number of drugs administered by subcutaneous injection such as biologics has increased, and a tendency to administer a large amount of drug at once in order to extend the duration of the effect of the drug has been recognized. In addition, in the treatment of rheumatoid arthritis and multiple sclerosis, depending on the drug, subcutaneous injection by itself (self-administration) is also accepted. Therefore, if the self-subcutaneous injection can be performed on the skin of the elbow joint extension side of one's own elbow, it will lead to improvement in convenience such as reduction in the number of hospital visits and hospitalizations.

  However, because the skin on the elbow joint extension side of the elbow is a part that cannot be touched with the same side of the hand, it is necessary to perform the work with one hand. It was difficult to do a subcutaneous injection with.

  The present invention has been made in view of such problems, and an object of the present invention is to provide a puncture assisting device or a puncture assisting device that facilitates self-subcutaneous injection into the skin of the elbow joint extension side of the elbow. It is to provide a set of instruments and puncture instruments.

  The puncture assisting device according to the present invention includes at least three holding portions that are assembled to be openable / closable with respect to at least one other, and urge the at least three holding portions in a direction to close each other with respect to at least the other one. And a pair of opening knobs operable to open at least three of the sandwiching parts with respect to at least one other, and opening toward the center position of at least three of the sandwiching parts. And a syringe insertion portion into which the syringe is inserted.

  The puncture assisting device according to the present invention preferably includes a pair of holding pieces that are rotatably combined with each other, and the pair of holding portions are provided at the tips of the holding pieces.

  In the puncture assisting device according to the present invention, in the above-described configuration, it is preferable that a pair of the holding portions provided in each of the holding pieces is connected to each other by an arcuate arch portion.

  In the puncture assisting device of the present invention, in the above configuration, it is preferable that the pair of sandwiching portions arranged obliquely is formed in a point-symmetric shape with respect to the center positions of at least three of the sandwiching portions.

  In the puncture assisting device of the present invention, in the above configuration, it is preferable that the syringe insertion portion is provided between the clamping portion and the opening knob.

  The present invention relates to the puncture assisting device and the puncture device set. The puncture device set includes the puncture assisting device and a syringe inserted into the syringe insertion portion.

  Examples of drug administration methods (medical solution injection methods) that can be performed using the puncture assist device and puncture device set of the present invention include the following.

  A skin picking step of picking the skin of the elbow joint extension side of the elbow at the skin collecting part of the puncture assisting device, and a syringe setting the syringe in the syringe insertion part of the puncture assisting device picking the skin of the elbow joint extension side of the elbow A setting step, a puncturing step of puncturing the elbow joint extension side skin of the elbow picked by the skin collecting portion, and an elbow elbow extension side portion of the elbow from the needle by pushing the pusher of the syringe A drug injecting step of injecting the drug into the skin and a needle extracting step of extracting the needle of the syringe from the skin of the elbow joint extended side of the elbow picked by the skin collecting portion Drug administration method.

  A syringe setting step of setting a syringe in the insertion portion of the puncture assisting device, and an elbow of the elbow picked up by the skin collecting portion of the puncture assisting device by picking the skin of the elbow joint extension side by the skin collecting portion of the puncture assisting device A puncturing step of puncturing the skin of the joint extension side portion with the needle of the syringe; a drug injection step of injecting a drug into the skin of the elbow joint extension side portion of the elbow by pushing the pusher of the syringe; And a needle extracting step of extracting the needle of the syringe from the skin of the elbow joint extension side portion of the elbow picked up by the skin part.

  On the premise of the above configuration, a drug administration method comprising a release step of releasing the force of the skin collecting part that is picking the skin of the elbow after the needle removing step.

  On the premise of the above-described configuration, a method for removing a needle is performed by releasing the force of the skin collecting part that is picking the skin of the elbow.

  Based on the above-described configuration, the skin collecting part is composed of at least three holding parts that are freely opened and closed with respect to at least one other. In the puncturing step, the needle of the syringe is attached to at least three holding parts. A method for administering a drug, comprising puncturing the skin from a direction along a central axis.

  On the premise of the above-described configuration, there is provided a drug administration method comprising a puncture depth defining step for defining the puncture depth of the needle of the syringe into the skin.

  Based on the above configuration, a method for administering a medicine, comprising a step of gathering together the skin of the elbow joint extension side of the elbow before the skin picking step.

  According to the present invention, the skin of the elbow joint extension side portion of the elbow can be stably picked with the puncture assisting device, and the drug can be administered subcutaneously by puncturing the skin picked with the puncture assisting device with the needle of the syringe. Therefore, it is possible to easily and safely perform subcutaneous injection by itself.

FIG. 2 is a perspective view of a puncture assisting device and a syringe constituting the puncture device set according to the first embodiment of the present invention. (A) is a longitudinal cross-sectional view of the puncture assistance apparatus shown in FIG. 1, (b) is sectional drawing which follows the AA line in the same figure (a). It is a perspective view of the pusher of the syringe shown in FIG. It is a figure which shows the procedure which picks the skin of the elbow joint extension side part of an elbow with the puncture assistance apparatus shown in FIG. 1, (a) shows the state before picking up skin, (b) shows after picking up the skin . It is a figure which shows the procedure which punctures the needle of a syringe to the skin picked up with the puncture assistance apparatus, (a) shows the state which set the syringe to the puncture guide part, (b) punctured the skin of the syringe needle Indicates the state. It is a figure which shows the state which pushed the pusher of the syringe and inject | poured the chemical | medical solution into skin. It is sectional drawing which shows a mode that a rod part is inserted in a rod insertion part, and a pair of clamping part is pushed open, (a) shows the state before inserting a rod part in a rod insertion part, (b) is a rod The state after inserting a rod part in an insertion part is shown. It is a perspective view which shows the modification of the rod part shown in FIG. It is a perspective view of the puncture assisting device which is the 2nd Embodiment of this invention, and the puncture assisting device and syringe which comprise a puncture device set. It is a figure which shows the procedure of picking the skin of the elbow joint extension side part of an elbow with the puncture assistance apparatus shown in FIG. 9, (a) shows the state before picking skin, and (b) shows after skin is picked. . (A) is sectional drawing which shows in detail the state of the skin of the elbow joint extension side part of the elbow picked by the clamping part, (b) is sectional drawing which follows the BB line in the figure (a). . It is a figure which shows the procedure which punctures the needle of a syringe to the skin picked up by the puncture assistance apparatus, (a) shows the state which set the syringe to the syringe insertion part, (b) punctured the skin of the syringe needle Indicates the state. It is a figure which shows a mode that a pusher of a syringe is pushed and a chemical | medical solution is inject | poured into skin. It is a figure for demonstrating the other procedure of the chemical | medical agent administration method using the puncture assistance apparatus shown in FIG. 9, (a) shows the state before plucking the skin, (b) shows after plucking the skin. . It is a perspective view which shows the modification of the puncture assistance instrument shown in FIG. It is a figure for demonstrating arrangement | positioning of the syringe insertion part in the puncture assistance instrument shown in FIG.

  Hereinafter, the first embodiment of the present invention will be described with reference to FIGS.

  A puncture device set 1 according to the first embodiment of the present invention shown in FIG. 1 is used to apply a drug such as a biologic agent to the elbow joint extension side of the elbow in various treatments such as rheumatoid arthritis and multiple sclerosis. It is used when injected subcutaneously into the skin. The puncture device set 1 includes a puncture assisting device 2 and a syringe 3. In the syringe 3, a pusher side rod portion 4 corresponding to the puncture assisting device 2 is provided on the pusher 5.

  As shown in FIGS. 1 and 2, the puncture assisting device 2 includes a first clamping piece 11 and a second clamping piece 12. The first sandwiching piece 11 and the second sandwiching piece 12 are each configured as a rectangular plate, and are combined in the thickness direction in an arrangement in which the outer shapes thereof are substantially matched. An intermediate portion in the longitudinal direction of the inner side surface of the second clamping piece 12 (the surface facing the first clamping piece 11 side) extends straight in the width direction and is also the inner side surface of the first clamping piece 11. A convex piece 12a that projects toward (the surface facing the second clamping piece 12) is integrally provided, and the inner surface of the first clamping piece 11 abuts on the upper surface of the convex piece 12a. ing. The upper surface of the convex piece portion 12a is curved in an arc shape when viewed from the side of the sandwiching pieces 11, 12, and the first sandwiching piece 11 is a second sandwiching piece with the upper surface of the convex piece portion 12a as a fulcrum. 12 can be rotated relative to 12.

  The first clamping piece 11 and the second clamping piece 12 can be made of, for example, a synthetic resin such as acrylic resin or ABS resin, but other materials such as a metal formed of a stainless steel plate, an aluminum alloy, or the like. It can also be formed by.

  Further, the first holding piece 11 and the second holding piece 12 are not limited to the configuration in which the first holding piece 12 and the second holding piece 12 are supported by the above-described convex piece portion 12a and combined with each other so as to be able to rotate relative to each other. It can also be set as the structure combined so that relative rotation is possible mutually using a moving mechanism.

  The portion on the tip side (the upper side in FIG. 1 and FIG. 2) of the first holding piece 11 that is in contact with the convex piece 12a is a plate-like first holding portion 13, and the second A portion of the sandwiching piece 12 on the front end side with respect to the convex piece portion 12 a serves as a plate-like second sandwiching portion 14 that faces the first sandwiching portion 13. The pair of sandwiching portions 13 and 14 can be opened and closed so that the first sandwiching piece 11 and the second sandwiching piece 12 relatively rotate, so that the distance between them approaches and separates. And the 1st clamping part 13 and the 2nd clamping part 14 which open and close can pinch the said skin by closing in the state which pinched | interposed the skin of the elbow joint extension part of an elbow between them. In addition, by opening the first sandwiching portion 13 and the second sandwiching portion 14, it is possible to open the skin that has been picked by these. In addition, the structure of the anti-slip | slip with respect to the picked skin can be provided in the inner surface of each clamping part 13 and 14, respectively, for example, the four groove | channels 13a and 14a extended in the width direction as shown in figure. Such a first clamping part 13 and a second clamping part 14 constitute a skin collecting part G.

  The puncture assisting device 2 is provided with a leaf spring 15 as an urging portion. The first clamping part 13 and the second clamping part 14 are urged by the leaf spring 15 in a closing direction, that is, in a direction approaching each other, and are brought into contact with each other in a natural state. In addition, the 1st clamping part 13 and the 2nd clamping part 14 can also be comprised so that a predetermined space | interval may be left | separated in a natural state.

  More specifically, as shown in FIG. 2, the leaf spring 15 is formed in a U shape in which a first plate-like piece 15a and a second plate-like piece 15b are connected by a curved piece 15c. The outer surfaces of the first clamping piece 11 and the second clamping piece 12 are respectively provided with recesses 11a and 12b extending along the longitudinal direction, and the first plate-like piece 15a of the leaf spring 15 is the first clamping piece. The second plate-like piece 15b of the leaf spring 15 is arranged in the recess 12b provided in the second holding piece 12 and is secondly arranged. Are supported by the sandwiching portion 14. Through holes 11b and 12c that penetrate the sandwiching pieces 11 and 12 in the thickness direction are provided on the base end sides of the recesses 11a and 12b, respectively, and the curved piece 15c of the leaf spring 15 passes through these through holes 11b and 12c. The 1 plate-like piece 15a and the 2nd plate-like piece 15b are connected. Further, a cylindrical locking portion 15d is integrally provided at the tip of the first plate-like piece 15a and the second plate-like piece 15b, and these locking portions 15d are provided on the bottom surfaces of the recesses 11a and 12b, respectively. By engaging with the locking grooves 11c and 12d formed, the leaf spring 15 is prevented from being detached from the first holding piece 11 and the second holding piece 12, and the first holding piece 11 and the second holding piece 11 The combination state with the sandwiching piece 12 is maintained.

  As the leaf spring 15, for example, a metal leaf spring formed of a steel plate such as spring steel or stainless steel can be used, but for example, a resin leaf spring can also be used. Further, the urging unit is not limited to the plate spring 15 having the above-described configuration, and the first clamping unit 13 and the second clamping unit 14 such as a string spring, a torsion spring, and an elastic material such as rubber. As long as they can be urged toward each other in a closing direction, other configurations can be adopted.

  The portion on the base end side (the side opposite to the side on which the first sandwiching portion 13 is provided) with respect to the portion of the first sandwiching piece 11 that abuts on the convex piece portion 12 a becomes the first opening knob 16. In addition, a portion closer to the base end side (the side opposite to the side where the second clamping portion 14 is provided) than the convex piece portion 12 a of the second clamping piece 12 is a second opening knob 17. In a state where the first clamping part 13 and the second clamping part 14 are closed, the first opening knob 16 and the second opening knob 17 are opposed to each other with a space therebetween, for example, The first holding piece 11 and the second holding piece 12 are relatively rotated by picking the opening knobs 16 and 17 so as to be held between two fingers and operating them in a direction to bring them closer to each other. Thus, the pair of sandwiching portions 13 and 14 can be opened. When the operation of the opening knobs 16 and 17 is released, the pair of clamping parts 13 and 14 are returned to the closed state by the spring force of the leaf spring 15. That is, by operating these opening knobs 16 and 17, the pair of holding parts 13 and 14 can be opened and closed. In addition, on the outer surface of each of the opening knobs 16 and 17, for example, as shown in the figure, a non-slip configuration such as three ribs 16a and 17a extending in the width direction can be provided.

  With such a configuration of the clip-like puncture assisting device 2, the opening knobs 16 and 17 are pinched so as to be sandwiched between two fingers to open the pair of clamping parts 13 and 14, and in this state, the pair of clamping parts 13 , 14 is pressed against the skin of the elbow joint extension side of the elbow from the vertical direction, and then the operation of the release knobs 16, 17 is released to hold and hold the skin between the pair of clamping parts 13, 14. can do.

  A holding piece 18 extending in the longitudinal direction is integrally provided at the base end of the second holding piece 12. The holding piece 18 is formed in a plate shape thinner than the second holding piece 12 and is slightly inclined toward the outer surface side with respect to the second holding piece 12. By pulling the holding piece 18 in a state where the skin is pinched between the pair of sandwiching portions 13 and 14, tension can be applied to the skin picked by the sandwiching portions 13 and 14. The holding piece 18 may be provided with a non-slip configuration such as a circular hole 18a or a rib as shown in the figure.

  A first puncture guide portion (syringe insertion portion) 21 is provided on the side portion of the first clamping portion 13, and a second puncture guide portion (syringe insertion portion) 22 is provided on the side portion of the second clamping portion 14. Is provided. These puncture guide portions 21 and 22 are formed in a ring shape having circular guide holes 21a and 22a, respectively, and the syringe 3 can be inserted into the guide holes 21a and 22a. The first puncture guide portion 21 has a posture in which the guide hole 21 a is directed between the first sandwiching portion 13 and the second sandwiching portion 14 so as to be integrated with the side portion of the first sandwiching portion 13. The second puncture guide portion 22 is provided such that its guide hole 22a is oriented between the first sandwiching portion 13 and the second sandwiching portion 14, and the side portion of the second sandwiching portion 14 is provided. Are integrally provided. The axial centers of the guide holes 21a and 22a of these two puncture guide portions 21 and 22 coincide when the pair of sandwiching portions 13 and 14 are closed so as to contact each other.

  A rod insertion part 23 is provided between the first clamping part 13 and the second clamping part 14. In the present embodiment, the rod insertion portion 23 is a region sandwiched between the convex piece portion 12 a and the puncture guide portions 21 and 22 between the first clamping portion 13 and the second clamping portion 14. The leaf spring 15 is provided between the first plate-like piece 15a and the second plate-like piece 15b and opens toward the sides of the first holding portion 13 and the second holding portion 14. . As shown in FIG. 2B, the inclined surface 24 is chamfered between the inner side surface and the side surface of the first holding piece 11 and between the inner side surface and the side surface of the second holding piece 12. Yes. Thereby, the rod insertion part 23 has a cross-sectional area at the inlet (opening end) larger than the cross-sectional area of the pusher side rod part 4 provided on the pusher 5 of the syringe 3, from the inlet side toward the inner side. The cross-sectional area gradually decreases, and the central portion has a shape that is a constant cross-sectional area smaller than the cross-sectional area of the pusher side rod portion 4. Further, the inner surface of the first clamping part 13 and the second side in the central part where the cross-sectional area of the rod insertion part 23 is constant in a state where the first clamping part 13 and the second clamping part 14 are closed. The distance between the holding part 14 and the inner side surface is smaller than the width dimension of the pusher side rod part 4 inserted into the rod insertion part 23. Therefore, when the pusher side rod portion 4 is inserted into the rod insertion portion 23, the distance between the pair of sandwiching portions 13 and 14 is gradually expanded by the pusher side rod portion 4 with the insertion.

  As shown in FIG. 1, the syringe 3 includes an outer cylindrical body 31 and a needle 32 in addition to the pusher side rod portion 4 and the pusher 5 as the rod portions described above.

  The outer cylinder 31 is formed in a cylindrical shape having one end opened and the other end closed by a needle support portion 31a, and the inside is a storage chamber for storing a medicine. The pusher 5 is formed in a cylindrical shape having an outer diameter corresponding to the inner diameter of the outer cylindrical body 31, and is inserted into the inner end of the outer cylindrical body 31 so as to be relatively movable in the axial direction with respect to the outer cylindrical body 31. It is installed. The outer cylinder 31 and the pusher 5 can be made of resin or glass, for example. Further, the pusher 5 may be configured such that a seal member that is formed of an elastic body such as rubber and seals between the inner peripheral surface of the outer cylindrical body 31 is attached to the tip thereof.

  A cylindrical hub 31b having a smaller diameter than that of the needle support portion 31a is integrally provided on the shaft center of the needle support portion 31a, and the needle 32 is fixed to the hub 31b. The needle 32 is a hollow needle, and the needle tip 32a is cut obliquely and formed at an acute angle. Further, the needle 32 is fixed to the hub 31b at the base end portion, and the inner cavity portion communicates with the inside of the outer cylindrical body 31 via the hub 31b. In addition, as the needle | hook 32, what was formed, for example with metal materials, such as stainless steel, an aluminum alloy, and a titanium alloy, can be used.

  The outer diameter of the needle support portion 31a of the syringe 3, that is, the outer diameter of the outer cylindrical body 31, is made larger than the inner diameter of the guide holes 21a, 22a of the puncture guide portions 21, 22, and the outer diameter of the hub 31b of the syringe 3 is punctured. It is made smaller than the internal diameter of the guide holes 21a and 22a of the guide parts 21 and 22. Therefore, the needle 32 and the hub 31b of the syringe 3 can be inserted into the guide holes 21a and 22a of the puncture guide portions 21 and 22 from the side of the puncture assisting device 2. Further, the needle support portion 31a abuts against the puncture guide portions 21 and 22, thereby restricting the insertion depth of the needle 32 and the hub 31b into the puncture guide portions 21 and 22, that is, the pair of sandwiching portions 13 and 14. Can do.

  A pair of finger-hanging flanges 31c extending toward the outside in the radial direction are integrally provided at the opening end of the outer cylindrical body 31 in a symmetrical arrangement. On the other hand, a disc-shaped pushing flange 5a is integrally provided at the base end of the pusher 5. Accordingly, the index finger and the middle finger are hung on the pair of finger-hanging flanges 31c of the outer cylindrical body 31, and the thumb is pushed on the pushing flange 5a of the pusher 5, and the pusher 5 is directed toward the inside of the outer cylindrical body 31 with the thumb. By pushing, it is possible to easily perform an operation of dispensing the medicine accommodated in the outer cylindrical body 31 from the needle tip 32a of the needle 32 to the outside.

  As shown in FIG. 3, the pusher side rod portion 4 is provided on the pusher 5. More specifically, the pusher side rod portion 4 is longer than the pusher 5 and is formed in a rod shape having a rectangular cross section, and is integrally connected to the lower surface of the pushing flange 5a of the pusher 5 at the base end thereof. Yes. Further, the pusher side rod portion 4 is arranged on the radially outer side of the pusher 5 with a space from the pusher 5 and arranged in parallel with the pusher 5 so as to extend along the axial direction of the pusher 5. Has been. The tip of the pusher side rod portion 4 can be formed into an acute angle shape by chamfering.

  When the pusher side rod portion 4 is provided integrally with the pusher 5 as in this embodiment, it is preferable to form these by injection molding of a resin material. The pusher side rod portion 4 is not limited to the structure provided integrally with the pusher 5, and may be configured to be fixed to the pusher 5 by using, for example, a fastening member, an adhesive, or the like. it can.

  Further, the rod portion is not limited to the pusher side rod portion 4 provided integrally with the pusher 5 of the syringe 3 as described above, and may be configured separately from the pusher 5. In this case, the rod portion can be operated independently from the operation of the pusher 5.

  A tunnel-like rod support portion 33 extending along the axial direction from the portion of the needle support portion 31a is integrally provided at a position shifted by 90 degrees with respect to the pair of finger flanges 31c on the outer peripheral surface of the outer cylindrical body 31. Yes. The pusher side rod portion 4 is inserted into the rod support portion 33, and the rod support portion 33 is slidably contacted with the outer surface of the pusher side rod portion 4 on its inner surface so that the pusher side rod portion 4 can slide freely. To support.

  With such a configuration, when the pusher 5 is pushed toward the inside of the outer cylindrical body 31, that is, toward the needle 32 in order to dispense the medicine from the needle tip 32a of the needle 32, the pusher side rod portion 4 is pushed together with the pushing. Gradually protrudes in parallel with the needle 32 from the distal end side of the outer cylindrical body 31.

  Next, based on FIG. 4 to FIG. 7, a drug administration method in which a drug is subcutaneously injected into the skin S of the elbow joint extension side of the elbow using the puncture device set 1 according to the first embodiment of the present invention ( The procedure of the chemical solution injection method will be described.

  First, a skin picking step is performed in which the skin S of the elbow joint extension side part of the elbow is picked by the pair of holding parts 13 and 14, that is, the skin collecting part G of the puncture assisting device 2. In the skin picking step, as shown in FIG. 4A, the pair of opening knobs 16 and 17 are picked so as to be sandwiched between, for example, two fingers, and the pair of holding parts 13 and 14 are opened. The inner surface of the second opening knob 17 is cut away so as to gradually become thinner toward the holding piece 18, and the first opening is opened when the pair of holding portions 13 and 14 are opened. The opening of the pair of holding portions 13 and 14 can be increased by making the inner knob 16 reach the notch portion of the knob portion 16.

  Next, in this state, the pair of holding portions 13 and 14 are pressed against the skin S of the elbow joint extension side portion of the elbow from the vertical direction to release the operation force applied to the opening knobs 16 and 17. As shown in (b), the skin S is picked and held between these sandwiching portions 13 and 14. At this time, the picked skin S is made to reach the site where the puncture guide portions 21 and 22 between the pair of sandwiching portions 13 and 14 are provided. Since the spring force is applied to the pair of sandwiching portions 13 and 14 from the leaf spring 15 in the direction of closing them, the skin S picked by the sandwiching portions 13 and 14 is pressed between the sandwiching portions 13 and 14. It is in a state.

  In the skin picking step, the pair of sandwiching portions 13 and 14 is placed in a posture perpendicular to the longitudinal direction of the arm to be subcutaneously injected, that is, the pair of sandwiching portions 13 and 14 is the arm. It is preferable to pick the skin S as a posture aligned along the longitudinal direction. By picking the skin S with the puncture assisting device 2 in such a posture, at least one of the puncture guide portions 21 and 22 faces the side of the extended arm, and the puncture guide portion 21 of the syringe 3 to be described later. , 22 and skin S can be easily punctured.

  In order to pinch more skin S between the pair of sandwiching portions 13 and 14, the gathering step of gathering the skin S of the elbow joint extension side part of the elbow so as to have a shape that is easier to pick before the skin picking step. Can also be done. In the gathering step, for example, the skin S is picked between the pair of holding portions 13 and 14 by the same operation as the skin picking step, the picked skin S is once separated, and the holding portions 13 and 14 are opened again. Furthermore, it can be performed by a method of picking a wide range of skin S. In this case, for example, an adhesive material or a concavo-convex shape may be provided at the tip of each of the pair of sandwiching portions 13 and 14 so that the skin S can be collected more easily.

  The gathering step is not limited to the above method, and can be performed by a method of gathering the skin S by hand without using the puncture assisting device 2 or a method of gathering the skin S using another device.

  After the skin S is picked by the pair of sandwiching portions 13 and 14, the skin S picked by the sandwiching portions 13 and 14 can be tensioned by pulling the holding piece 18 as necessary.

  When the skin S is picked by the puncture assisting device 2, the syringe 3 is set in either one of the puncture guide portions 21 and 22 as a syringe setting step. In the present embodiment, as shown in FIG. 5A, in the syringe setting step, the needle 32 of the syringe 3 is inserted into the guide hole 22a of the puncture guide portion 22 from the side of the puncture assisting device 2. The syringe 3 is set on the puncture guide portion 22. At this time, the syringe 3 is set to a posture in which the tip of the pusher side rod portion 4 faces the open end of the rod insertion portion 23. Thus, since the syringe 3 is set in the puncture guide portions 21 and 22, the syringe 3 can be easily and accurately set in the puncture assisting device 2.

  Next, as shown in FIG. 5 (b), as a puncturing step, the syringe 3 set in the puncture guide portion 22 is pinched between the pair of sandwiching portions 13 and 14, that is, by the sandwiching portions 13 and 14. The needle 32 of the syringe 3 is punctured into the skin S. Accordingly, the needle 32 is sandwiched between the pair of sandwiching portions 13 and 14 in parallel with the sandwiching portions 13 and 14 and from the side of the sandwiching portions 13 and 14, that is, the skin S picked by the sandwiching portions 13 and 14. The skin S is punctured from the side of the.

  At this time, since the inner diameter of the guide hole 22a of the puncture guide portion 22 is smaller than the outer diameter of the needle support portion 31a of the syringe 3, the insertion amount of the syringe 3 into the puncture guide portion 22 is determined by the needle support portion 31a. The contact with the puncture guide unit 22 is restricted to a predetermined range. Thereby, the puncture depth to the skin S of the needle 32 is prescribed | regulated (puncture depth regulation process). Therefore, it is possible to prevent the syringe 3 from being unexpectedly inserted deeply into the puncture guide portion 22 and the needle 32 from being excessively deeply punctured or penetrated through the skin S.

  When the needle 32 of the syringe 3 is punctured into the skin S, as shown in FIG. 6, the pusher 5 of the syringe 3 is pushed toward the needle 32 as shown in FIG. A drug is injected into S.

  When the pusher 5 is pushed toward the needle 32 in the medicine injection process, the pusher side rod portion 4 protrudes from the rod support portion 33 together with the pusher 5 and is inserted into the rod insertion portion 23. As shown in FIG. 7A, the height dimension of the pusher side rod portion 4 in the vertical direction in the drawing is larger than the vertical distance between the inner side surfaces of the pair of sandwiching portions 13 and 14 when the skin S is picked. Is also getting bigger. When the pusher side rod portion 4 is inserted into the rod insertion portion 23, the pusher side rod portion 4 comes into contact with the inclined surfaces 24 of the holding portions 13 and 14, and the pusher side rod portion 4 is inserted. Accordingly, the distance between the pair of sandwiching portions 13 and 14 is gradually expanded by the pusher side rod portion 4. Then, as shown in FIG. 7 (b), when the pusher side rod portion 4 reaches the middle portion of the rod insertion portion 23 and is sandwiched between the inner side surfaces of the sandwiching portions 13 and 14, The distance between the pair of sandwiching portions 13 and 14 holding the S, that is, the opening of the sandwiching portions 13 and 14 is constant.

  With such a configuration, the sandwiching portions 13 and 14 for grasping the skin S while injecting the drug from the needle 32 of the syringe 3 into the skin S stably picked between the pair of sandwiching portions 13 and 14 of the puncture assisting device 2. Can be gradually opened, so that the compression of the skin S caused by being pinched by the sandwiching portions 13 and 14 is gradually released with the injection of the drug, and the drug presses the free end of the subcutaneous nerve. Invasion caused by this can be reduced, and a large amount of drug can be administered subcutaneously.

  As shown in FIG. 8, the pusher side rod portion 4 may have a configuration in which a tapered tip portion 4 a is provided on the tip side. The tapered tip portion 4a has a shape in which the cross-sectional area gradually decreases toward the tip side. In this case, by inserting the pusher side rod portion 4 into the rod insertion portion 23 at the tapered distal end portion 4a without providing the inclined surfaces 24 in the pair of sandwiching portions 13 and 14, the pair of sandwiching portions 13 and 14 is inserted. Can be gradually widened. In addition, the pusher side rod part 4 provided with the taper-shaped front-end | tip part 4a can also be applied with respect to the structure which provided the inclined surface 24 in a pair of clamping parts 13 and 14. FIG. By adjusting the taper angle of the tapered distal end portion 4a, the distance between the pair of sandwiching portions 13 and 14 can be gradually widened at an appropriate timing or degree with respect to the amount of drug injected.

  When the pusher 5 is pushed to a predetermined position and the injection of the medicine into the skin S is completed, a needle removal step of pulling out the syringe 3 from the puncture guide portion 22 and removing the needle 32 of the syringe 3 from the skin S is performed. Do.

  Then, after the needle removal step, a release step of releasing the force of the pair of holding portions 13 and 14 holding the skin S by pinching the pair of opening knob portions 16 and 17 so as to be sandwiched between two fingers. Do. In this embodiment, when the medicine is injected from the needle 32 of the syringe 3 into the skin S stably picked between the pair of holding parts 13, 14 of the puncture assisting device 2, the pusher side rod part 4 Thus, since the clamping force of the clamping parts 13 and 14 that grip the skin S is gradually weakened, the releasing step of releasing the force of the pair of clamping parts 13 and 14 that grip the skin S can be omitted. Thereby, the skin S into which the medicine has been injected by the syringe 3 is released from the state of being picked by the holding portions 13 and 14 of the puncture assisting device 2, and the administration of the medicine is completed.

  As described above, according to the first embodiment of the present invention, the skin S of the elbow joint extension side portion of the elbow is stably picked by the puncture assisting device 2 and is picked by the puncture assisting device 2. Alternatively, the drug can be administered into the skin S by puncturing the needle 32 of the syringe 3 from the side. Therefore, the puncture assisting device 2 is operated with one hand to pick the skin S of the elbow joint extension side of the other arm, and then the syringe 3 is held with one hand from which the puncture assisting device 2 is released, and the puncture is performed. By puncturing the skin S picked by the puncture assisting device 2 from the side of the puncture assisting device 2 using the guide portions 21 and 22 as a guide, the elbow joint extension side portion of the elbow Can be easily and safely injected into the skin S.

  Moreover, since it is possible to perform subcutaneous injection into the skin S of the elbow joint extension side of the elbow by itself, it is possible to administer a large amount of drug without causing pain compared to subcutaneous injection into other sites. it can. Moreover, since the main nerve does not exist in the skin S of the elbow joint extension side of the elbow, the needle 32 of the syringe 3 can be safely punctured into the skin S without damaging the nerve.

  Next, a second embodiment of the present invention will be described by way of example with reference to FIGS.

  The puncture device set 101 or the puncture assisting device 102 according to the second embodiment of the present invention shown in FIG. 9 is used in various treatments such as rheumatoid arthritis and multiple sclerosis. It is used when injecting subcutaneously into the skin of the elbow joint extension side. This puncture device set 101 includes a puncture assist device 102 and a syringe 103. For the single puncture assisting device 102, a commercially available general syringe can be used as a syringe for subcutaneous injection.

  The puncture assisting device 102 includes a first clamping piece 111 and a second clamping piece 112.

  The first clamping piece 111 and the second clamping piece 112 can be made of, for example, a synthetic resin such as acrylic resin or ABS resin, but other materials such as a metal formed of a stainless steel plate, an aluminum alloy, or the like. It can also be formed by.

  A pair of leg portions 111 a is provided on the distal end side (the upper side in FIG. 9) of the first clamping piece 111. Each of these leg portions 111a has a shape curved outward so as to widen the interval with the second sandwiching piece 112, and is arranged side by side with a space therebetween. Similarly, a pair of leg portions 112a is provided on the distal end side (the upper side in FIG. 9) of the second holding piece 112. Each of these leg portions 112a has a shape curved outward so as to widen the interval with the first sandwiching piece 111, and is arranged side by side with a space therebetween.

  The 1st clamping piece 111 and the 2nd clamping piece 112 become a substantially symmetrical shape, and are mutually combined by the arrangement | positioning which made the external shape substantially correspond.

  A pair of hinge pieces 111b protrudes inward and is integrally provided at an intermediate portion in the longitudinal direction of the inner side surface of the first holding piece 111 (the surface facing the second holding piece 112). A pair of hinge pieces 112b project inward and are integrally provided at an intermediate portion in the longitudinal direction of the inner side surface of the piece 112 (the surface facing the first sandwiching piece 111). The pair of hinge pieces 111b of the first holding piece 111 are disposed so as to overlap each other inside the pair of hinge pieces 112b of the corresponding second holding piece 112, and are relatively relative to the hinge piece 112b by a pin portion (not shown). Is pivotally connected to the motor. That is, the first holding piece 111 can rotate relative to the second holding piece 112 around the pin portions of the hinge pieces 111b and 112b.

  The first sandwiching piece 111 and the second sandwiching piece 112 are not limited to be configured to be relatively rotatable with each other by the hinge pieces 111b and 112b, but can be relatively rotated with each other using another rotating mechanism. It can also be set as the structure combined.

  A first sandwiching portion 113 is provided at the tip of each of the pair of leg portions 111a of the first sandwiching piece 111, and a second portion of each of the pair of leg portions 112a of the second sandwiching piece 112 is provided at the tip. Is provided. One of the first holding portions 113 is arranged to face the second holding portion 114 so that the flat holding surface 113a faces the flat holding surface 114a of the one second holding portion 114. ing. Similarly, one first clamping part 113 faces the second clamping part 114 so that the flat clamping surface 113a faces the flat clamping surface 114a of the other second clamping part 114. Are arranged.

  The pair of first sandwiching portions 113 and the pair of second sandwiching portions 114 are not limited to the above-described arrangement, and for example, the first sandwiching portion 113 and the second sandwiching portion 114 that are disposed diagonally opposite each other. However, it is also possible to adopt a configuration in which the shapes are symmetrical with respect to the center position of the four sandwiching portions 113 and 114. In this case, the sandwiching surface 113a of the first sandwiching portion 113 and the sandwiching surface 114a of the second sandwiching portion 114 that are disposed obliquely opposite to each other face each other in parallel and are disposed obliquely to each other. The clamping surfaces 113a and 114a of the two clamping parts 113 and 114 face each other in parallel. By adopting such a configuration, the skin S can be stabilized more stably so that each of the four clamping surfaces 113a and 114a of each clamping part 113 and 114 faces the center position of the four clamping parts 113 and 114. Can be picked.

  Further, it is sufficient that at least three sandwiching portions 113 and 114 are provided, and it is possible to provide four or more sandwiching portions. Regardless of the number of the sandwiching portions, it is preferable that all the sandwiching portions are arranged side by side in an annular shape centering on these center positions.

  The pair of sandwiching portions 113 and the pair of sandwiching portions 114 can be opened and closed so that the first sandwiching piece 111 and the second sandwiching piece 112 rotate relative to each other so as to approach and separate from each other. . And the 1st clamping part 113 and the 2nd clamping part 114 which open and close can pinch the said skin S by closing in the state which pinched | interposed the skin S of the elbow joint extension side part of an elbow between them. Further, by opening the first clamping part 113 and the second clamping part 114, the skin picked by these can be released. Thus, the 1st clamping part 113 and the 2nd clamping part 114 which were combined together so that opening and closing were possible comprised the skin collection part G which collects and picks up the skin S. FIG.

  A pair of clamping parts 113 provided in the first clamping piece 111 are connected to each other by an arc-shaped first arch part 113b provided integrally therebetween. Similarly, the pair of sandwiching portions 114 provided in the second sandwiching piece 112 are connected to each other by an arc-shaped second arch portion 114b provided integrally therewith. These arch portions 113b and 114b are curved in directions in which the distance between them is increased.

  The puncture assisting device 102 is provided with a pair of C-shaped springs 115 as biasing portions. The first sandwiching piece 111 is provided with a pair of slit-like through holes 111c for spring insertion, and similarly, the second sandwiching piece 112 is provided with a pair of slit-like through holes 112c for spring insertion. ing. Each of the pair of C-shaped springs 115 has a shape in which, for example, a spring steel or stainless steel wire is curved into a C shape, and is inserted into the corresponding through holes 111c and 112c, respectively, and one end thereof is the first. The other end is supported on the outer surface of the second sandwiching piece 112. As a result, the first clamping part 113 and the second clamping part 114 are urged by the pair of C-shaped springs 115 in the closing direction, that is, in the direction of approaching each other.

  The C-shaped spring 115 is not limited to the above-described spring steel or stainless steel, and may be a resin spring or the like. Further, the urging portion is not limited to the C-shaped spring 115 having the above-described configuration, and the first clamping portion 113 and the second clamping portion such as those using elastic materials such as a string spring, a torsion spring, and rubber are used. Any other configuration can be used as long as it can bias 114 in the direction of closing each other.

  A portion of the first holding piece 111 closer to the base end side than the hinge piece 112b (the side opposite to the side where the first holding portion 113 is provided) serves as a first opening knob 116, and A portion of the holding piece 112 closer to the base end side than the hinge piece 112b (the side opposite to the side where the second holding portion 114 is provided) is a second opening knob 117. In a state where the first holding part 113 and the second holding part 114 are closed, the first opening knob 116 and the second opening knob 117 are opposed to each other with a space therebetween, for example, The first clamping piece 111 and the second clamping piece 112 are relatively rotated by operating the knobs for opening 116, 117 so as to be sandwiched between two fingers and operating them in a direction to bring them closer to each other. Thus, the pair of sandwiching portions 113 and 114 can be opened. When the operation of the opening knobs 116 and 117 is released, the pair of holding portions 113 and 114 are returned to the closed state by the spring force of the C-shaped spring 115. That is, the pair of holding portions 113 and 114 can be opened and closed by operating these opening knobs 116 and 117.

  The opening knobs 116 and 117 may be configured such that finger hooks 116a and 117a are integrally provided side by side. In the case shown in the figure, the finger hooks 116a and 117a are formed in a slightly warped plate shape so as to protrude inward. By providing such finger-hanging portions 116a and 117a integrally with the opening knobs 116 and 117, it is easy to hook the opening knobs 116 and 117, and the operability thereof can be improved.

  With the configuration of the clip-shaped puncture assisting device 102 as described above, the pair of holding portions 113 and 114 are opened by holding the opening knobs 116 and 117 so that the fingers are sandwiched between the fingers. By pressing against the skin S of the elbow joint extension side of the elbow from the vertical direction and then releasing the operation of the opening knobs 116, 117, the skin S is picked and held between the pair of clamping parts 113, 114. be able to.

  A syringe insertion part 121 is provided between the first clamping parts 113 and 114 and the opening knobs 116 and 117. In the illustrated case, the syringe insertion portion 121 is disposed inside the hinge pieces 111 b and 112 b and is fixed to either the inner side surface of the first holding piece 111 or the inner side surface of the second holding piece 112.

  The syringe insertion portion 121 is formed in a cylindrical shape having an insertion hole 121a at its axis, and the syringe 103 can be inserted into the insertion hole 121a. Moreover, the syringe insertion part 121 can hold | maintain the syringe 103 inserted in the insertion hole 121a. The syringe insertion portion 121 has a posture in which the insertion hole 121a opens toward the center position of the four sandwiching portions 113 and 114, that is, a posture in which the axis of the insertion hole 121a passes through the center position of the four sandwiching portions 113 and 114. Is provided. Therefore, the syringe 103 inserted into the insertion hole 121a of the syringe insertion portion 121 has a posture in which the needle 132 is directed to the center position of the four holding portions 113 and 114, that is, the central axis of these four holding portions 113 and 114. It is assumed that the posture is along the direction.

  The center position of the four sandwiching portions 113 and 114 is the skin collecting portion G. In particular, the reference position of these four sandwiching portions 113 and 114 (for example, the center of gravity of the sandwiching surfaces 113a and 114a) is a straight line. It is best to insert the needle 132 at the position of the center of gravity of the quadrilateral formed by tying.

  Syringe insertion portion 121 may have a tip portion of insertion hole 121a that is inclined so that insertion hole 121a faces the center when opening knob 116 is opened. Moreover, the syringe insertion part 121 can also be set as the structure provided integrally with the 1st clamping piece 111 or the 2nd clamping piece 112. FIG. Further, when the syringe insertion portion 121 has both the hinge pieces 111b and 112b and the syringe insertion portion 121 penetrating through the hinge pins, the opening knobs 116 and 117 are both in the opened state and the closed state. It can also be configured to always face the center position. In this case, in order to prevent the syringe insertion part 121 from rotating around the hinge pin part when the syringe is inserted or when a liquid medicine is injected, the syringe is provided with at least two clamping pieces and an elastic piece among the four clamping parts 113 and 114. It can also be set as the structure which hold | maintains the insertion part 121 in the attitude | position which faces a center position.

  As shown in FIG. 9, the syringe 103 includes a pusher 105, an outer cylinder 131, and a needle 132.

  The outer diameter of the portion of the outer cylinder 131 of the syringe 103 near the needle 132 is slightly smaller than the inner diameter of the insertion hole 121a of the syringe insertion portion 121. Therefore, the syringe 103 can be inserted into the insertion hole 121a of the syringe insertion portion 121. A stopper or the like is provided on the outer cylinder 131 of the syringe 103 to regulate the insertion depth of the syringe insertion portion 121 of the syringe 103 into the insertion hole 121a, that is, the puncture depth of the needle 132 of the syringe 103 into the skin S. It can also be set as the structure to do.

  An annular finger hook flange 131c that extends outward in the radial direction is integrally provided at the open end of the outer cylinder 131. On the other hand, a disc-shaped pushing flange 105 a is integrally provided at the base end of the pusher 105. As a result, the index finger and the middle finger are put on the finger hook flange 131c of the outer cylinder 131, the thumb is put on the pushing flange 105a of the pusher 105, and the pusher 105 is pushed toward the inside of the outer cylinder 131 by the thumb. Thus, it is possible to easily perform an operation of dispensing the medicine stored in the outer cylindrical body 131 from the needle tip 132a of the needle 132 to the outside.

  Next, based on FIG. 10 to FIG. 14, a drug administration method in which a drug is injected subcutaneously into the skin S of the elbow joint extension side of the elbow using the puncture device set 101 according to the second embodiment of the present invention ( The procedure of the chemical solution injection method will be described.

  First, a skin picking step is performed in which the skin S of the elbow joint extension side portion of the elbow is picked by the pair of holding portions 113 and 114 of the puncture assisting device 102, that is, the skin collecting portion G. In the skin picking step, as shown in FIG. 10A, the pair of opening knobs 116 and 117 and the finger hooks 116a and 117a are picked so as to be pinched with, for example, fingers, and the pair of holding parts 113 and 114 are opened. .

  Next, in this state, the pair of holding parts 113 and 114 are pressed against the skin S of the elbow joint extension side part of the elbow from the vertical direction, and the operating force applied to the opening knobs 116 and 117 and the finger hooks 116a and 117a is applied. As shown in FIG. 10 (b), the skin S is picked and held between the sandwiching portions 113 and 114. Since the spring force is applied to the pair of sandwiching portions 113 and 114 from the C-shaped spring 115 in a direction to close them, the skin S picked by the sandwiching portions 113 and 114 is compressed between the sandwiching portions 113 and 114. It is in the state.

  At this time, as shown in FIG. 11, the skin S is picked from four directions by the four sandwiching portions 113 and 114, and thus the skin S of the picked portion is substantially cylindrical. In addition, since the pair of first holding parts 113 are connected by the first arch part 113b and the pair of second holding parts 114 are connected by the second arch part 114b, four holding parts Part of the skin S picked by the parts 113 and 114 is sandwiched between the arch parts 113b and 114b, so that the skin S can be picked more reliably in a columnar shape. Thus, the skin S picked by the puncture assisting device 102 in the skin picking process protrudes from the elbow surface in a vertical column shape.

  In order to pinch more skin S between the pair of sandwiching portions 113 and 114, before the skin picking step, the skin S of the elbow joint extension side portion of the elbow is gathered together so that it can be easily picked up. Can also be done. In the gathering step, for example, the skin S is picked between the pair of holding portions 113 and 114 by the same operation as the skin picking step, the picked skin S is released once, and the holding portions 113 and 114 are opened again. Furthermore, it can be performed by a method of picking a wide range of skin S. In this case, for example, an adhesive material or a concavo-convex shape may be provided at the distal ends of the pair of sandwiching portions 113 and the pair of sandwiching portions 114 so that the skin S can be more easily collected.

  Note that the gathering step is not limited to the above method, and can be performed by a method of gathering the skin S by hand without using the puncture assisting device 102 or a method of gathering the skin S using another device.

  When the skin S is picked by the puncture assisting device 102, the syringe 103 is then inserted into the insertion hole 121a of the syringe insertion portion 121 as a syringe setting step. As shown in FIG. 12 (a), in the syringe setting step, the syringe 103 is placed on the skin S on the elbow joint extension side of the elbow from the side where the opening knobs 116, 117 of the puncture assisting device 102 are provided. By being inserted vertically into the insertion hole 121 a of the syringe insertion portion 121, the syringe insertion portion 121 is set.

  Next, as shown in FIG. 12 (b), as a puncturing process, the syringe 103 set in the syringe insertion portion 121 is directed between the four sandwiching portions 113 and 114 along the syringe insertion portion 121. That is, the needle 132 is pushed toward the skin S picked by the sandwiching portions 113 and 114, and the needle 132 is punctured into the skin S from a direction perpendicular to the columnar skin S at the center position of the four sandwiching portions 113 and 114. As described above, the needle 132 of the syringe 103 is punctured into the skin S along the central axis passing through the central positions of the four holding portions 113 and 114. When the needle 132 is punctured perpendicularly to the skin S, the nerve through which the needle 132 passes can be reduced, and pain due to puncture can be reduced.

  Spaces are provided between the leg portions 111a and 112a of the sandwiching pieces 111 and 112, respectively, and the leg portions 111a and 112a are curved so as to widen the interval between them. When the needle 132 is punctured into the skin S, the state can be seen well from between the leg portions 111a and 112a. Thereby, the puncturing operation of the needle 132 using the puncture assisting device 102 can be facilitated.

  When the outer cylinder 131 of the syringe 103 is provided with a stopper or the like and the insertion depth of the syringe insertion portion 121 of the syringe 103 into the insertion hole 121a is restricted, the needle 132 of the syringe 103 is inserted into the skin S. The puncture depth can be defined (puncture depth defining step). Therefore, the needle 132 of the syringe 103 can be prevented from being punctured too deeply into the skin S.

  When the needle 132 of the syringe 103 is punctured into the skin S, as shown in FIG. 13, the pusher 105 of the syringe 103 is pushed toward the needle 132 as shown in FIG. A drug is injected into S. At this time, the skin S is picked into a cylindrical shape by the puncture assisting device 102, and since a space for injecting the drug is easily formed under the skin, pain due to pressure invasion during the injection of the drug can be reduced. .

  When the pusher 105 is pushed to a predetermined position and the injection of the medicine into the skin S is completed, a needle removal step of pulling out the syringe 103 from the syringe insertion portion 121 and removing the needle 132 of the syringe 103 from the skin S is performed. Do.

  Then, after the needle removal step, the pair of opening knobs 116 and 117 and the finger hooks 116a and 117a are pinched with fingers to release the force of the four clamping parts 113 and 114 that are holding the skin S. A release process is performed. Thereby, the skin S into which the medicine has been injected by the syringe 103 is released from the state of being picked by the holding portions 113 and 114 of the puncture assisting device 102. The release process may be performed before the needle removal process. In this case, when the puncture assisting device 102 is moved away from the elbow joint extension side of the elbow, the needle 132 is naturally removed. Is called.

  As described above, according to the second embodiment of the present invention, the skin S on the elbow joint extension side portion of the elbow is stably picked by the puncture assisting device 102, and the skin S is picked by the puncture assisting device 102. In addition, the needle 132 of the syringe 103 can be punctured from the vertical direction to administer the drug into the skin S. Accordingly, the puncture assisting device 102 is operated with one hand to pick the skin S of the elbow joint extension side of the other arm, and then the syringe 103 held by one hand with the puncture assisting device 102 separated is the syringe. By inserting the needle 132 of the syringe 103 from the vertical direction into the skin S picked by the puncture assisting device 102 by inserting it into the insertion hole 121a of the insertion part 121 from the vertical direction, the skin S of the elbow joint extension side part of the elbow is self-developed. Subcutaneous injection can be easily and safely performed.

  Moreover, since it is possible to perform subcutaneous injection into the skin S of the elbow joint extension side of the elbow by itself, it is possible to administer a large amount of drug without causing pain compared to subcutaneous injection into other sites. it can. Further, since the main nerve does not exist in the skin S of the elbow joint extension side of the elbow, the needle 132 of the syringe 103 can be safely punctured into the skin S without damaging the nerve.

  As shown in FIG. 14, in the medicine administration method using the puncture assisting device 102 of the present embodiment, as shown in FIG. 14 (a), first, a syringe setting step for setting the syringe 103 on the puncture assisting device 102 is performed. After that, as shown in FIG. 14 (b), the needle S of the syringe 103 is punctured into the picked skin S by picking the skin S of the elbow joint extension side of the elbow with the four holding parts 113, 114. It can also be set as the structure which performs a puncture process. In this case, since the syringe 103 is set in advance at a predetermined position of the syringe insertion portion 121, the skin S sandwiched between the four sandwiching portions 113, 114 gradually rises in a columnar shape and the four sandwiching portions 113 , 114 is automatically punctured into the skin S in the process of being picked. Therefore, the needle 132 of the syringe 103 can be easily attached to the skin S by a simple operation by simply setting the syringe 103 in the syringe insertion portion 121 of the puncture assisting device 102 and pinching the skin S with the four clamping portions 113 and 114 from the vertical direction. Can be punctured.

  Also in this case, after the needle 132 of the syringe 103 is punctured into the skin S, the drug injection step, the release step, and the needle removal step are performed. In the needle removal step, the skin S is picked by the release step 4 The force of the two clamping portions 113 and 114 is released, and the skin S is automatically held away from the needle 132 when the skin S is not held in a cylindrical shape.

  15 is a perspective view showing a modification of the puncture assisting device shown in FIG. 9, and FIG. 16 is a view for explaining the arrangement of the syringe insertion portion in the puncture assisting device shown in FIG.

  As shown in FIGS. 15 and 16, the syringe insertion portion 121 is not limited to the configuration disposed inside the hinge pieces 111 b and 112 b, and may be configured to be disposed outside the hinge pieces 111 b and 112 b. Even in this case, the syringe insertion portion 121 has a posture in which the insertion hole 121a opens toward the center position of the four sandwiching portions 113 and 114, that is, the axis of the insertion hole 121a is located between the four sandwiching portions 113 and 114. It is provided in a posture that passes through the center position. In the case shown in the figure, the syringe insertion portion 121 is in a posture in which the axial direction of the insertion hole 121a is deviated by 25 degrees with respect to the central axis L passing through the central positions of the four sandwiching portions 113 and 114. In this case, it is preferable that the skin S of the elbow joint extension side portion of the elbow is picked as a posture in which the first holding portion 113 and the second holding portion 114 are aligned along the longitudinal direction of the arm. Thereby, the insertion direction of the syringe 103 with respect to the puncture auxiliary | assistance apparatus 102 can be inclined toward the inner side of a body, and the insertion operation to the syringe insertion part 121 of the syringe 103 can be made easy.

  It goes without saying that the present invention is not limited to the second embodiment and can be variously modified without departing from the gist thereof.

  For example, in the present embodiment, the case where the puncture device set 1 or 101 is used when the skin S other than the elbow skin is picked and injected subcutaneously is shown. Can be used.

DESCRIPTION OF SYMBOLS 1 Puncture instrument set 2 Puncture assist instrument 3 Syringe 4 Pusher side rod part 4a Tapered tip part 5 Pusher 5a Pushing flange 11 1st clamping piece 11a Recessed part 11b Through-hole 11c Locking groove 12 2nd clamping piece 12a Convex piece 12b Concave 12c Through hole 12d Locking groove 13 First clamping part 13a Groove 14 Second clamping part 14a Groove 15 Plate spring (biasing part)
15a First plate-like piece 15b Second plate-like piece 15c Curved piece 15d Locking portion 16 First opening knob 16a Rib 17 Second opening knob 17a Rib 18 Holding piece 18a Hole 21 First puncture guide Part 21a guide hole 22 second puncture guide part 22a guide hole 23 rod insertion part 24 inclined surface 31 outer cylindrical body 31a needle support part 31b hub 31c finger hook flange 32 needle 32a needle tip 33 rod support part 101 puncture device set 102 puncture assist Instrument 103 Syringe 105 Pusher 105a Pushing flange 111 First clamping piece 111a Leg part 111b Hinge piece 111c Through hole 112 Second clamping piece 112a Leg part 112b Hinge piece 112c Through hole 113 First clamping part 113a Holding surface 113b 1st arch part 114 2nd clamping part 114a Clamping surface 114b Second arch portion 115 C-shaped spring 116 First opening knob 116a Finger hook portion 117 Second opening knob portion 117a Finger hook portion 121 Syringe insertion portion 121a Insert hole 131 Outer cylinder 131c Finger hook flange 132 Needle 132a Needle tip S skin G skin collecting part

Claims (6)

At least three sandwiching parts that can be freely opened and closed with respect to at least one other;
An urging portion that urges at least three of the sandwiching portions with respect to at least the other one in a closing direction;
A pair of opening knobs operable to open at least three of the sandwiching parts with respect to at least the other one,
A puncture assisting device, comprising: a syringe insertion portion that is formed in a cylindrical shape that opens toward a central position of at least three of the clamping portions and into which a syringe is inserted.   2. The puncture assisting device according to claim 1, comprising a pair of sandwiching pieces that are rotatably combined with each other, and a pair of the sandwiching portions provided at the tip of each of the sandwiching pieces.   The puncture assisting device according to claim 2, wherein a pair of the clamping portions provided in each of the clamping pieces are connected to each other by an arcuate arch portion.   The puncture assisting device according to claim 2 or 3, wherein the pair of sandwiching portions disposed diagonally opposite to each other is formed in a point-symmetric shape with respect to a center position of at least three of the sandwiching portions. Instruments.   The puncture assisting device according to any one of claims 1 to 4, wherein the syringe insertion portion is provided between the clamping portion and the opening knob. A puncture assisting device according to any one of claims 1 to 5,
A puncture device set comprising: a syringe inserted into the syringe insertion portion.

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