JP2015069073A - Injection training device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an injection practice device at low cost with a touch feeling and a puncture feeling similar to those of a human body.SOLUTION: An injection training device P1 has a bag-like member 1 having a surface sheet and a back surface sheet 1b and using at least the surface sheet as a simulated skin layer 1a, a simulated muscle layer 2 arranged inside the bag-like member 1 and having flexibility, elasticity, and shape retention, and a simulated subcutaneous layer 3 arranged at least between the simulated skin layer 1a and the simulated muscle layer 2 inside the bag-like member 1 and having higher flexibility than the simulated muscle layer 2. At least one of the simulated muscle layer 2 and the simulated subcutaneous layer 3 contains gel.

Description

  The present invention relates to an injection practitioner used when learning an injection operation technique essential in, for example, medicine or nursing.

  There are various types of injection, such as subcutaneous injection, intramuscular injection, and intravenous injection, depending on the purpose of treatment and the type / characteristics of the injection. In order to acquire techniques involving bioinvasion such as injection, it is indispensable to have an injection practitioner that can simulate clinical situations.

  For example, Patent Literatures 1 and 2 disclose an injection training device that can simulate subcutaneous injection and intramuscular injection. In this injection training device, a sponge member such as polyurethane corresponding to a simulated muscle layer and a pseudo subcutaneous layer and a rubber member such as silicon rubber are accommodated in a bag-like body corresponding to the simulated skin layer.

Japanese Patent No. 4618509 Utility model registration No. 3180352

  However, in the conventional injection training device, the sponge member and the rubber member constituting the simulated muscle layer and the simulated subcutaneous layer have a feeling of touch when touched or a feeling of puncture when the needle is inserted. There is a problem that it is difficult to practice injection operation with a sense of reality because it is far from the sense of the human body. Further, the conventional injection training device generally has a problem that it is expensive because of its complicated structure.

  The present invention has been made in view of the above-described problems, and an object thereof is to provide an injection training device that has a sense close to the human body and can perform injection practice with a sense of reality, and can be provided at a low cost. .

  In order to achieve the above object, the present invention has the following structure.

[1] A bag-like member having a top sheet and a back sheet, and having at least the top sheet as a simulated skin layer;
A simulated muscle layer disposed inside the bag-like member and having flexibility, elasticity and shape retention;
A simulated subcutaneous layer disposed at least between the simulated skin layer and the simulated muscle layer in the bag-like member and having higher flexibility than the simulated muscle layer;
An injection practice device, wherein at least one of the simulated muscle layer and the simulated subcutaneous layer contains a gel.

  [2] The injection training device according to item 1, wherein at least one of the simulated muscle layer and the simulated subcutaneous layer includes a water-absorbing gel.

  [3] The simulated muscle layer is composed of acrylamide / acrylic acid copolymer (AA / AM), natural rubber (NR), styrene / butadiene rubber (SBR), isoprene rubber (IR), butadiene rubber (BR), chloroprene rubber. (CR), acrylonitrile-butadiene rubber (NBR), butyl rubber (isobutylene-isoprene rubber (IIR)), ethylene-propylene-diene rubber (EPDM), urethane rubber (U), silicon rubber (Si, Q), fluorine rubber (FKM) ), Styrene-based thermoplastic elastomer (TPS), olefin-based thermoplastic elastomer (TPO), ester-based thermoplastic elastomer, urethane-based thermoplastic elastomer (TPU), amide-based thermoplastic elastomer (TPAE), PVC-based thermoplastic elastomer ( TPVC), fluorinated heat 3. The injection training device according to 1 or 2 above, which mainly comprises one or more materials selected from a plastic elastomer, sponge (urethane foam / melamine foam), and konjac.

  [4] The injection practitioner according to any one of items 1 to 3, wherein the simulated muscle layer has a hardness measured by a durometer (A type) rubber hardness tester of A5.0 degrees to A29.0 degrees. .

  [5] The injection training device according to any one of items 1 to 4, wherein the simulated subcutaneous layer has a faster water absorption rate than the simulated muscle layer.

  [6] The injection training device according to any one of the preceding items 1 to 5, wherein the simulated subcutaneous layer has a durometer (A type) hardness measured by a rubber hardness meter adjusted to A7.0 or less.

  [7] The injection training device according to any one of items 1 to 6, wherein the simulated subcutaneous layer has a viscosity of 4 to 2000 Pa · s (pascal second) measured by a B-type viscometer.

[8] The simulated subcutaneous layer is a semi-liquid state including a gel aqueous solution in which a water-soluble gel is dissolved and a granular gel,
The gel aqueous solution has viscosity and elasticity,
8. The injection training device according to any one of items 1 to 7, wherein the granular gel includes the water-absorbing gel.

  [9] The water-soluble gel includes carboxymethylcellulose (CMC), methylhydroxypropylcellulose, ethylhydroxyethylcellulose, hydroxyethylcellulose, ethylcellulose, methylcellulose and salts thereof, polyvinyl alcohol (PVA), polyvinylpyrrolidone, carboxyvinyl polymer, polyacrylamide. Mainly composed of one or more materials selected from polyacrylate, gum arabic, guar gum, locust bean gum, tamarind seed gum, xanthan gum, carrageenan, gellan gum, starch, gelatin, agar, pectin 9. The injection practice device according to item 8 above.

  [10] The water-absorbent gel of the granular gel includes polyacrylate, polysulfonate, maleic anhydride, acrylamide / acrylic acid copolymer, ethylene / acrylate copolymer, and ethylene / sulfonate copolymer. 10. The injection training device according to item 8 or 9 above, which mainly comprises one or more materials selected from a polymer and an ethylene / maleic anhydride copolymer.

[11] A bag-like member having a top sheet and a back sheet, and having at least the top sheet as a simulated skin layer;
An accommodation member disposed inside the bag-like member and having flexibility,
The injection training device, wherein the housing member includes a water-absorbing gel.

  [12] The injection training device according to [11], wherein the housing member includes a semi-solid gel.

  [13] The injection training device according to [11], wherein the housing member includes a semi-liquid gel.

  [14] The simulated skin layer is selected from ethylene-methacrylic acid copolymer (EMMA), nylon polyethylene, polyvinyl chloride (PVC), ethylene vinyl acetate copolymer (EVA), polyurethane, polypropylene, and polyethylene. 14. The injection training device according to any one of the preceding items 1 to 13, wherein the injection training device is mainly composed of one or more materials.

  [15] The injection practice device according to any one of items 1 to 14, wherein a skin-colored cosmetic layer is provided on the simulated skin layer.

  [16] The injection practice device according to any one of items 1 to 15, wherein the back sheet is provided with a protective layer for preventing penetration of the injection needle.

  [17] The injection practice device according to any one of items 1 to 16, wherein the back sheet is made of a transparent or translucent material.

  [18] The injection training device according to item 17 above, wherein the housing member or the simulated muscle layer and the simulated subcutaneous layer are made of a transparent or translucent material.

[19] The injection practice device according to any one of 1 to 18 above, and a holder for holding the injection practice device,
The holder includes a holder main body that holds at least a surface side of the injection training device, and attachment means for detachably attaching the holder main body to a part of a human body. With injection practice device.

  According to the injection training device of the invention [1], since the gel is contained in the bag-like member, a sense of touch when touched or a sense of puncture when the needle is inserted is a sense for the human body. It is possible to practice injection operation with a sense of reality. Furthermore, since the bag-like member has a simple structure in which the material for the simulated muscle layer and the material for the simulated subcutaneous layer are simply enclosed, the manufacturing cost can be reduced and the bag can be provided at a low cost.

  According to the injection training device of the invention [2], since the water-absorbing gel is contained in the bag-shaped member having the simulated skin layer on the surface, a large amount of the injection training liquid can be stored by the water-absorbing gel. . For this reason, even with a large number of injection exercises, problems such as overflowing of the injection practice liquid can be prevented, so the work of removing the injection practice liquid and the replacement work of the injection practice device itself can be reduced, and the injection practice can be performed efficiently. It can be done and maintenance can be done easily.

  According to the injection practice device of the invention [3] to [10], the sense of touch, the feeling of puncture, and the sense of injection when injecting the injection practice liquid can be brought closer to the sense of the human body.

According to the injection training device of the invention [11] to [13], since the water-absorbing gel is contained in the bag-like member, the injection having a sense close to the human body and having a sense of presence is similar to the above. It can be practiced and provided at low cost. In addition, since a large amount of injection practice liquid can be stored, the injection practice liquid can be prevented from overflowing, injection practice can be performed efficiently, and maintenance can be easily performed, as described above. According to the above, it is possible to make the sense of touch, the feeling of puncture, and the sense of injection when injecting the injection practice liquid closer to the sense of the human body.

  According to the injection practice device of the invention [15], the simulated skin layer can be visually brought close to the human skin, and an injection practice with a more realistic feeling can be performed.

  According to the injection training device of the invention [16], it is possible to reliably prevent a problem that the injection needle is carelessly pushed through to the back side.

  According to the injection practice device of the invention [17] and [18], the state of penetration of the injected injection practice liquid can be visually observed.

  According to the injection practice device with a holder of the invention [19], the injection practice device can be securely attached to a predetermined position of the patient, and injection practice with a more realistic feeling can be performed.

FIG. 1 is a partially cutaway plan view showing an injection practice device according to a first embodiment of the present invention. FIG. 2 is a cross-sectional view showing the injection training device of the first embodiment. FIG. 3 is an exploded perspective view for explaining the injection training device with a holder according to the first embodiment of the present invention. FIG. 4 is a perspective view showing a state where the injection training device of the first embodiment is mounted on a human body. FIG. 5 is a partially cutaway plan view showing an injection training device according to a second embodiment of the present invention. FIG. 6 is a cross-sectional view showing the injection training device of the second embodiment. FIG. 7 is a partially cutaway plan view showing an injection training device according to a third embodiment of the present invention. FIG. 8 is a cross-sectional view showing the injection training device of the third embodiment.

<First Embodiment>
FIG. 1 is a partially cutaway plan view showing an injection practice device P1 according to a first embodiment of the present invention, and FIG. 2 is a sectional view.

  As shown in both figures, the injection training device P1 according to the first embodiment includes a bag-like member 1, a simulated muscle layer 2 arranged inside the bag-like member 1, and a simulated muscle inside the simulated skin layer 1. A simulated subcutaneous layer 3 disposed over the entire outer periphery of the layer 2 is provided as a basic component.

  The bag-like member 1 has a rectangular bag-like shape in a plan view provided with a rectangular topsheet 1a and a backsheet 1b constituting a simulated skin layer, and corresponds to the skin of a human body. Part. In this embodiment, the top sheet 1a and the back sheet 1b of the bag-like member 1 are made of an ethylene-methacrylic acid copolymer (EMMA). And in the state which both sheets 1a and 1b were piled up, the outer peripheral edge part (periphery 4 sides) is welded and integrated and formed by heat seal or a high frequency welder.

  In the present embodiment, the top sheet 1a and the back sheet 1b are transparent or translucent, and the inside can be visually observed from the outside through these sheets 1a and 1b. Yes.

  Here, in this embodiment, both the top sheet 1a and the back sheet 1b constitute a simulated skin layer, but in the present invention, at least the top sheet 1a may constitute a simulated skin layer. In the following description, the top sheet 1a is referred to as a simulated skin layer 1a as necessary.

  In the present embodiment, EMMA is used as the material for the bag-like member 1. However, in the present invention, the material for the simulated skin layer 1 a is not particularly limited. Any material can be used as long as it has an impermeability so that it can be retained. Moreover, in this embodiment, it is preferable to use the material which can be welded by heating means, such as a heat seal and a high frequency welder, as a material of the bag-shaped member 1. In the present invention, the method for bonding the top sheet 1a and the back sheet 1b is not limited to welding by heating. Therefore, it is not always necessary to select a material that can be welded by heating as the bag-like member 1.

  For example, in the present invention, the material of the bag-like member 1 is selected from the above-mentioned EMMA, nylon polyethylene, polyvinyl chloride (PVC), ethylene vinyl acetate copolymer (EVA), polyurethane, polypropylene, and polyethylene. A seed or two or more materials can be used as the main constituent. Among them, EMMA is excellent in the above-described impermeability and weldability, and can approximate the touch feeling when touched or the puncture feeling when inserting an injection needle to the touch feeling or puncture feeling of the human body. Therefore, it is preferable to use EMMA as in this embodiment.

  The simulated muscle layer 2 enclosed in the bag-like member 1 has a flat block shape that is rectangular in plan view, and is a portion corresponding to the muscle of the human body, and as a core material of the injection training device P1. Also works. In this embodiment, a semi-solid polymer gel composed of an acrylamide / acrylic acid copolymer (AA / AM) is used as the material of the simulated muscle layer 2.

  This polymer gel has water absorption, shape retention, flexibility, elasticity, and resilience. Touch feeling when touched, puncture feeling when inserting an injection needle, injection practice after insertion The sensation such as the absorbability (injection feeling) of the injection solution when injecting the solution (injection solution) approximates the sense of the human muscle. Further, after the syringe is removed from the injection training device, liquid leakage from the needle hole trace of the simulated muscle layer 2 can also be prevented, so liquid leakage can also be prevented from the needle hole trace of the simulated skin layer 1a. Is similar to the phenomenon when actually injected into the human body.

  In the present embodiment, AA / AM is used as the material of the simulated muscle layer 2, but in the present invention, if at least one of the simulated muscle layer 2 and the simulated subcutaneous layer 3 contains a gel, good. Therefore, in the present invention, as will be described in detail later, gel is not necessarily used as the material of the simulated muscle layer 2.

  For example, in the present invention, the material of the simulated muscle layer 2 includes AA / AM, natural rubber (NR), styrene-butadiene rubber (SBR), isoprene rubber (IR), butadiene rubber (BR), chloroprene rubber (CR ), Acrylonitrile / butadiene rubber (NBR), butyl rubber (isobutylene / isoprene rubber (IIR)), ethylene / propylene / diene rubber (EPDM), urethane rubber (U), silicon rubber (Si, Q), fluorine rubber (FKM), styrene -Based thermoplastic elastomer (TPS), olefin-based thermoplastic elastomer (TPO), ester-based thermoplastic elastomer, urethane-based thermoplastic elastomer (TPU), amide-based thermoplastic elastomer (TPAE), PVC-based thermoplastic elastomer (TPVC), Fluorine-based thermoplastic One or more materials selected from lastmers, sponges (urethane foam / melamine foam), and konjac can be used as the main component. In particular, as described above, AA / AM is excellent in water absorption, shape retention, flexibility, elasticity, and the like, as well as in touch, puncture, and injection. It is preferable to use AA / AM.

  In the present embodiment, the semi-solid polymer gel constituting the simulated muscle layer 2 is adjusted to a hardness of A5.0 degrees to A29.0 degrees by a durometer (A type) rubber hardness meter. Is preferred. That is, it is preferable that the hardness of the simulated muscle layer 2 is adjusted within the above-mentioned specific range, because feelings such as a tactile sensation, a puncture feeling, and an injection feeling can be brought closer to the sensation of the human muscles.

  The simulated subcutaneous layer 3 is disposed with a substantially uniform thickness over the entire outer periphery of the simulated muscle layer 2 inside the bag-like member 1, and is a portion corresponding to the subcutaneous tissue of the human body. In the present embodiment, a semi-liquid polymer gel is used as the simulated subcutaneous layer 3. This polymer gel includes a gel aqueous solution in which the water-soluble gel 3a is dissolved, and a granular gel 3b mixed in the gel aqueous solution substantially evenly. In the present embodiment, carboxymethyl cellulose (CMC) is used as the water-soluble gel 3a, and water-absorbing sodium polyacrylate is mixed as the granular gel 3b in the aqueous solution (CMC aqueous solution).

  Here, the CMC aqueous solution is given viscosity and elasticity, and can prevent the injection solution from flowing backward from the needle hole after removing the injection needle without interfering with the injection of the injection solution. The air can be effectively prevented from entering. The granular gel 3b is a water-absorbing gel as described above, and plays a central role in absorbing an injection solution. As the granular gel 3b, a material having a high water absorption rate is used so that the injection solution can be absorbed smoothly.

  In this embodiment, the granular gel 3b has a higher water absorption rate than the water-soluble gel 3a, and the water-soluble gel 3a has a higher water absorption rate than the polymer gel (AA / AM) constituting the simulated muscle layer 2. It's getting faster.

  In the present invention, it is sufficient that at least one of the material constituting the simulated muscle layer 2 and the material constituting the simulated subcutaneous layer 3 contains a gel. Therefore, in this invention, the simulated muscle layer 2 does not necessarily need to contain a gel. Similarly, the simulated subcutaneous layer 3 does not necessarily need to contain a gel.

  In the present invention, it is preferable that at least one of the material constituting the simulated muscle layer 2 and the material constituting the simulated subcutaneous layer 3 contains a water-absorbing gel.

  Here, in the present embodiment, the water-absorbing gel is a gel having a water absorption amount (g) of 1 or more with respect to its own weight (g), that is, a gel of “water absorption amount (g) / gel self-weight (g) ≧ 1”. say. In particular, in the present invention, it is preferable to use a superabsorbent gel whose water absorption is 10 times the gel weight (water absorption (g) / gel weight (g) ≧ 10), more preferably the water absorption is the gel weight. It is preferable to use a highly water-absorbing gel 100 times (water absorption (g) / self weight of gel (g) ≧ 100).

  For example, in the present invention, the water-soluble gel 3a includes CMC, methyl hydroxypropyl cellulose, ethyl hydroxyethyl cellulose, hydroxyethyl cellulose, ethyl cellulose, methyl cellulose and salts thereof, polyvinyl alcohol (PVA), polyvinyl pyrrolidone, carboxyvinyl polymer, poly Mainly composed of one or more materials selected from acrylamide, polyacrylate, gum arabic, guar gum, locust bean gum, tamarind seed gum, xanthan gum, carrageenan, gellan gum, starch, gelatin, agar, pectin Can be used as Among them, CMC is preferably used as the water-soluble gel 3a because the sense of puncture when inserting an injection needle and the sense of injection when injecting an injection solution are very close to those of the human body. it can.

  In the present invention, the granular gel 3b is selected from the group consisting of polyacrylates such as sodium polyacrylate, polysulfonates, anhydrous maleates, and acrylamide / acrylic acid copolymers, or Two or more kinds of materials can be used as the main component. Among them, polyacrylate is very excellent in water absorption and can be suitably used as the granular gel 3b.

  In the present invention, the semi-liquid polymer gel constituting the simulated subcutaneous layer 3 is adjusted to a hardness of A7.0 or less with a durometer (A type) rubber hardness meter, and further with a viscosity measured with a B-type viscometer. It is preferable to adjust to 4 to 2000 Pa · s (Pascal second). That is, when the hardness and viscosity of the simulated subcutaneous layer 3 are adjusted within the above specific range, it is possible to bring the sense of touch, puncture, injection, etc. closer to the sense of the human subcutaneous tissue.

  In the present embodiment, the simulated subcutaneous layer 3 is disposed to have a substantially uniform thickness over the entire outer periphery of the simulated muscle layer 2, but is not limited thereto, and in the present invention, the thickness of the entire injection training device is reduced. Therefore, the simulated subcutaneous layer 2 may be arranged with a substantially uniform thickness only between the simulated skin layer 1 and the simulated muscle layer 2.

  The injection practice device P1 of this embodiment includes a bag-shaped member 1, a simulated muscle layer 2, and a simulated subcutaneous layer 3 as basic configurations, and is manufactured, for example, according to the following procedure.

  First, the two sheets 1a and 1b constituting the bag-like member 1 are overlapped, and three of the four sides are welded and joined together as described above, and then the remaining one side opening is formed. Then, a polymer gel as the simulated muscle layer 2 and an aqueous gel solution or granular gel 3b as the simulated subcutaneous layer 3 are introduced. Then, the opening practice part P1 of the basic structure in this embodiment can be manufactured by heat-welding the opening part of the remaining 1 side and joining and integrating.

  Needless to say, in the present invention, the manufacturing procedure of the injection training device P1 is not limited, and any procedure may be used.

  Moreover, in the injection training device P1 of the present embodiment, a water-repellent cotton material or urethane rubber is pasted on the outer surface (upper surface) of the simulated skin layer 1a constituted by the surface sheet. A decorative layer 4 made of a material attached is attached. This makeup layer 4 is colored in skin color, and when a practice of injection operation is actually practiced, the human skin is imagined to give a sense of reality.

  In the present invention, the configuration of the decorative layer 4 is not particularly limited, and the decorative layer may be formed by applying a coloring agent to the simulated skin layer 1a, or the colored simulated skin layer 1a. You may make it comprise by.

  In the present embodiment, a protective layer 5 is provided on the outer surface (lower surface) of the back sheet 1 b of the bag-like member 1. This protective layer 5 prevents the injection needle inserted from the simulated skin layer 1a on the front side of the bag-like member 1 from passing through the injection practice device P1 and coming out to the back side during practice of the injection operation. It is a member for preventing. Therefore, any member may be used as long as it is a member that can prevent penetration of the injection needle. For example, a thin plate, film, sheet or the like having a certain hardness can be used. Further, the material of the protective layer 5 is not particularly limited, and general resin, rubber material, cloth, wood, paper, metal and the like can be used. Furthermore, in this invention, you may make it comprise the back surface sheet 1b itself with the material which can prevent penetration of an injection needle.

  In the injection training device P1 of the present embodiment, the simulated skin layer (front sheet) 1a and the back sheet 1b are made of the same material, so the back sheet 1b is used as a simulated skin layer by inverting the front and back. By doing so, it is possible to use both sides.

  The injection practice device P1 of the present embodiment configured as described above can be used as it is for practice of injection operation as it is, but is used by being attached to a dedicated holder 6 as described below. Is preferred.

  FIG. 3 is a perspective view for explaining the relationship between the injection training device P1 and the holder 6 according to the first embodiment of the present invention. As shown in the figure, the holder 6 of the present embodiment includes a holder main body 61 that holds the surface of the injection training device P1 in an exposed state, and the holder main body 61 for attaching the holder main body 61 to a human arm, leg, or the like. A fixing band 65 is provided.

  The holder main body 61 is configured by a box-shaped soft member having an upper surface opening 62 on the upper surface side (front surface side). Further, the holder main body 61 is formed so that the inner shape thereof corresponds to the outer peripheral shape of the injection training device P1 so that the injection training device P1 can be accommodated in the holder main body 61 in an appropriate state via the upper surface opening 62. It has become. In this accommodated state, the injection training device P1 is held by the holder main body 61, so that the injection training device P1 is not dropped or displaced from the holder main body 61. Furthermore, in this accommodated state, the region (intermediate region) excluding the outer peripheral edge on the surface of the injection training device P1, that is, the main region of the decorative layer 4 is exposed upward through the upper surface opening 62 of the holder body 61. It is like that.

  The fixed band 65 has a central portion disposed on the bottom surface inside the holder main body 61 and both side portions extending through both side walls of the holder main body 61 and drawn out to the outside. Further, hook and loop fasteners 66 detachably attached to both ends of the fixed band 65 are attached. In the present embodiment, the fixed band 65 constitutes the attaching means.

  When the injection practice device P1 (injection practice device with holder) held in the holder 5 is used for the practice of the injection, the injection practice device with the holder is attached to the arm or leg of the patient's role such as a practitioner. To do. For example, as shown in FIG. 4, when wearing the arm of the patient role M, the fixed band 65 is wound around the arm of the patient role M with the injection training device P1 placed at a predetermined position of the arm, The surface fasteners 66 are bonded and fixed together. The fixing band 65 has elasticity, and by attaching it to the arm in a slightly pulled state, the injection training device P1 is held in close contact with the arm, and the displacement of the injection training device P1 is effectively prevented. Can be prevented.

  In this way, the practitioner practices the injection operation on the injection training device P1 attached to the arm of the patient role M, assuming subcutaneous injection or intramuscular injection. That is, the practitioner inserts the needle of the actual syringe 7 containing the practice liquid for injection (injection liquid) into the simulated skin layer 1a from the surface side of the injection practice device P1, and the needle point is the simulated muscle layer 2 or simulated skin. Arranged in the lower layer 3.

  Here, in this embodiment, since the simulated muscle layer 2 and the simulated subcutaneous layer 3 are different in softness (hardness), the touch when the needle tip punctures the simulated subcutaneous layer 3 and the simulated muscle layer 2 are The feeling when puncturing is different. Therefore, based on the difference in feeling, the practitioner repeatedly performs the practice so that the position of the needle point can be grasped inside the simulated subcutaneous layer 3 or the simulated muscle layer 2, so that the practitioner At the time of injection or intramuscular injection, it is possible to accurately acquire a sense of the length of insertion of the needle tip, such as how much the needle tip is inserted.

  By the way, at the time of actual subcutaneous injection or intramuscular injection, an operation for confirming whether the needle tip is inserted into the blood vessel is performed after the needle tip is inserted and before the injection solution is injected. This confirmation operation is an operation for confirming that blood is not collected in the syringe 72 by pulling the plunger 71 of the syringe 7. Therefore, also in practice of the injection operation with respect to this injection practice device P1, the operation of pulling the plunger 71 is performed after inserting the needle tip.

  Here, in the present embodiment, the phenomenon and feel when pulling the plunger 71 can be obtained as if they were actually injected into a human body.

  In other words, in an injection practice device that uses a sponge member as a simulated muscle layer or simulated subcutaneous layer, after inserting the needle of the syringe, in order to confirm that the needle tip is not located in the blood vessel, Air is sucked when the plunger is pulled. For this reason, there is no sense of resistance when pulling the plunger, and the phenomenon and feel are greatly different from the case of actually injecting into the human body, which may make it difficult to learn appropriate injection operation techniques. .

  Therefore, in the present embodiment, a semi-solid AA / AM having an appropriate hardness is used as the simulated muscle layer 2, and a CMC aqueous solution and sodium polyacrylate having an appropriate hardness and viscosity are used as the simulated subcutaneous layer 3. Therefore, when the plunger 71 is pulled after inserting the needle of the syringe 7, there is a moderate resistance, and a phenomenon or feel similar to that actually injected into the human body can be obtained, It is possible to reliably acquire appropriate injection operation techniques.

  After confirming that the needle tip is not located in the blood vessel, the plunger 71 is pushed in to inject the injection solution in the syringe 72 into the injection training device P1. At this time, in the present embodiment, a water-absorbing polymer gel is used as the simulated muscle layer 2 and the simulated subcutaneous layer 3, and sodium polyacrylate having a high water absorption rate is used as the simulated subcutaneous layer 3 in particular. For this reason, the injection solution in the syringe 7 is smoothly injected into the simulated subcutaneous layer 3 while giving an appropriate resistance feeling in the injection practice device P1, and is similar to the phenomenon or feel that is actually injected into the human body. And an appropriate injection operation technique can be acquired more reliably.

  After injecting the injection solution, the injection needle is withdrawn from the inside of the injection training device P1, thereby completing the practice of the injection operation assuming a series of intramuscular injections or subcutaneous injections.

  The practitioner increases the proficiency level and learns appropriate injection operation techniques by repeating such injection operation practice many times.

  According to the injection training device P1 of this embodiment, since the water-absorbing polymer gel is used as the simulated muscle layer 2 and the simulated subcutaneous layer 3, the injection solution can be sufficiently absorbed and held. For this reason, it is possible to prevent a problem that the injection solution overflows even by practicing the injection operation several tens of times or more, so that the number of operations for removing the injection solution can be reduced. Accordingly, the practice of the injection operation can be repeated repeatedly without interruption in the middle, the practice of the injection operation can be performed efficiently, and the removal work of the injection solution or the replacement work of the injection practice device P1 Maintenance can be easily performed as much as possible.

  In addition, the injection training device P1 of the present embodiment has a simple structure in which the polymer gel constituting the simulated muscle layer 2 and the simulated subcutaneous layer 3 is simply enclosed in the bag-like member 1, so that the size of the training device itself is small. In addition to being able to reduce the weight, the manufacturing cost can be kept low, and it can be provided at a low cost.

  Moreover, in the injection practice device P1 of this embodiment, since the back sheet 1b is transparent or translucent, the state of penetration of the injection solution into the injection practice device P1 can be visually observed through the back sheet 1b. Helps the practitioner himself or the supervisor check the proficiency level. Furthermore, it is possible to clearly grasp the state of accumulation of the injection solution when the number of exercises is repeated, which is useful for determining the replacement timing of the injection practice device P1.

  In particular, in the present invention, when the simulated muscle layer 2 and the simulated subcutaneous layer 3 are also made of transparent or translucent materials and are colored as an injection for practice, they are injected into the exercise device P1. The penetration of the injected solution can be observed more clearly.

  In addition, in the injection training device P1 of the present embodiment, the thickness and hardness of the polymer gel constituting the simulated muscle layer 2 and the amount and softness of the polymer gel constituting the simulated subcutaneous layer 3 are appropriately changed. Various injection practitioners P1 can be provided according to need such as lean type, obese type, muscular type, female type, male type, elderly type, infant type and the like.

  Moreover, in the injection training device P1 of the above embodiment, the case where the simulated subcutaneous layer 3 is arranged on the entire circumference of the simulated muscle layer 2 has been described as an example. However, the present invention is not limited thereto, and in the present invention, the simulated skin is The lower layer 3 should just be arrange | positioned between the at least upper surface of the simulation muscle layer 2, ie, the at least simulation muscle layer 2 in the bag-shaped member 1, and a surface sheet (simulation skin layer 1a).

  Furthermore, it is also possible to arrange a tube made of resin or rubber as a simulated blood vessel on the surface or inside of the simulated muscle layer 2 and practice it for blood vessel injection.

  Next, the injection training device P1 of the present invention described in the first embodiment is a model of Example 1, and two types of injection training devices having similar functions that are already sold are used as models of Comparative Examples 1 and 2, The result of the physical property comparison test will be described.

  The model of Example 1 is the same as the structure shown in the first embodiment, and is made of EMMA (ethylene-methacrylic acid copolymer) as the top sheet (simulated skin layer) 1a and back sheet 1b of the bag-like member 1. And what was formed in the clear satin was used. Each sheet 1a, 1b has a size of 215 in the vertical direction, 135 mm in the horizontal direction, and a material thickness of 100 μm. A skin-colored cotton material (decorative layer 4) was attached to the surface of the top sheet 1a. As the simulated muscle layer 2, an acrylamide-acrylic acid copolymer added with water was used. The weight ratio of acrylamide-acrylic acid copolymer to water was 8.5: 100. The size of the simulated muscle layer 2 is 180 mm in length, 100 mm in width, and 25 mm in thickness. As the simulated subcutaneous layer 2, a mixture of a CMC aqueous solution and sodium polyacrylate was used. The weight ratio of sodium polyacrylate, CMC, and water was 1.1: 0.5: 100.

As a model of Comparative Example 1, an injection practice model having a product model number of 100310 manufactured by Limbs & Things Limited was used. In this model, a skin-colored urethane sheet having a thickness of 1 mm is used as a surface sheet (simulated skin layer), a sponge material having a thickness of 15 mm is used as a simulated subcutaneous layer, and a cylindrical synthetic rubber having a radius of 40 mm is used as a core material. The shape of this model is a semi-cylindrical shape having a length of 120 mm, a width of 110 mm, and a thickness of 70 mm. As a model of Comparative Example 2, an “injection training plate for blood vessel injection practice manufactured by buoy techno center Co., Ltd. "It was used. In this model, natural rubber is used as a surface sheet (simulated skin layer), a silicon rubber member is used as a simulated subcutaneous layer, and simulated blood vessels are arranged. This model has a length of 85 mm, a width of 50 mm, and a thickness of 9 mm.

  In addition to the above models, a model (simulated model) of Reference Example 1 prepared to obtain a touch close to the human body was prepared. In the model of Reference Example 1, “3M Tegaderm Comfort Film Dressing 1688”, which is a film manufactured by Sumitomo 3M Limited, is pasted on the surface of a beef block.

  For each model of Example 1, Reference Example 1 and Comparative Examples 1 and 2, (1) the piercing force of the injection needle, (2) the pulling resistance when pulling the injection needle once after piercing, (3) The change in pressure during injection of the injection solution was measured. The measurement results are shown in Table 1.

  In addition, among each measurement, regarding the pressure measurement, “EZ.Test-500N” manufactured by SIMADZU was used, and each model and a syringe were placed on a fixing jig of the measuring device. The syringe used was a 10 ml syringe and the injection needle was a 23G needle.

  As is clear from each measurement result, the model of Example 1 related to the present invention shows similar characteristics to Reference Example 1 using beef blocks in each evaluation, and is comprehensive for subcutaneous and intramuscular practice. It turns out that it is suitable for.

Second Embodiment
5 and 6 are views showing an injection training device P2 according to the second embodiment of the present invention. As shown in both figures, this injection training device P2 is different from the injection training device P1 of the first embodiment in that the injection training device P1 of the first embodiment has a bag shape having a simulated skin layer 1a. The simulated subcutaneous layer 3 is disposed on the outer periphery of the simulated muscle layer 2 in the member 1, whereas the injection practice device P2 of the second embodiment is that the simulated subcutaneous layer 3 does not exist.

  That is, in the injection training device P2 of the second embodiment, a semi-solid, water-absorbing material composed of an acrylamide / acrylic acid copolymer (AA / AM) as a simulated muscle layer 2 in the bag-like member 1. A polymer gel is enclosed.

  In the injection training device P2 of the second embodiment, the other configuration is substantially the same as that of the injection training device P1 of the first embodiment. Omitted.

  In the injection training device P2 of the second embodiment, the same operational effects can be obtained as in the first embodiment.

  For example, also in the injection training device P2 of the second embodiment, AA / AM as the simulated muscle layer 2 has water absorption, shape retention, flexibility, elasticity, and resilience. Similar to the embodiment, the injection practice liquid that has been injected is sufficiently and reliably absorbed, and a function of preventing leakage from the needle hole trace after practice remaining in the injection practice device P2 is provided. Furthermore, it is possible to approximate sensations such as a tactile sensation when the injection training device P2 is touched, a puncture sensation when the injection needle is stabbed, and an injection sensation when injecting an injection solution to a human body. Therefore, also in the injection training device P2 of the second embodiment, the injection operation can be practiced and the appropriate injection technique can be surely acquired, unlike the case of injection into the human body.

  Also in the injection training device P2 of the second embodiment, the simulated muscle layer 2 is made of a water-absorbing gel, so that a large amount of injection solution can be stored as in the first embodiment, and injection practice can be performed. It can be performed efficiently and can be easily managed.

  Furthermore, according to the injection training device P2 of the second embodiment, since the semi-solid polymer gel as the simulated muscle layer 3 can be produced by simply enclosing the bag-like member 1, the structure is further increased. Simplification can further reduce costs.

  In the injection training device P2 of the second embodiment, any material can be used as the simulated muscle layer 2 as long as the material has water absorption, shape retention, flexibility, elasticity, and resilience. be able to.

  Further, the injection training device P2 of the second embodiment is applied to the arm and leg, but is not limited thereto, and in the present invention, it is applied to a human body part having a small amount of muscle such as a breast and an earlobe. Can do. In that case, for example, a semi-liquid gel having water absorption can be employed as the simulated muscle layer 2. As such a gel, a water-absorbing gel of sodium polyacrylate can be exemplified.

  In the present embodiment, the semi-solid water absorption as the simulated muscle layer 2 is accommodated in the bag-shaped member 1, but the present invention is not limited to this, and in the present invention, the simulated skin is contained in the bag-shaped member. You may make it accommodate the semi-liquid water-absorbing gel as a lower layer. As this semi-liquid water-absorbing gel, a gel obtained by mixing granular gel such as sodium polyacrylate described in the first embodiment with a CMC aqueous solution made of water-soluble gel such as CMC can be adopted. .

  Here, in this embodiment, the semi-solid water-absorbing gel accommodated in the bag-like member 1 or the semi-liquid water-absorbing gel constitutes the accommodating member.

<Third Embodiment>
7 and 8 are views showing an injection training device P3 according to the third embodiment of the present invention. As shown in both figures, in this injection training device P3, the simulated muscle layer 2 and the simulated subcutaneous layer 3 are provided in the bag-like member 1 as in the first embodiment.

  In the injection training device P3 of the third embodiment, as the simulated muscle layer 2, a semi-solid acrylamide / acrylic acid copolymer (AA / AM) is used as in the first embodiment, and the simulated subcutaneous layer. 3, polyacrylic acid sodium which is a semi-liquid water-absorbing gel is used.

  In the injection training device P3 of the third embodiment, other configurations are substantially the same as those of the injection training device P1 of the first embodiment. Omitted.

  In the injection training device P3 of the third embodiment, the same operational effects can be obtained as in the first embodiment.

  For example, also in the injection training device P3 of the third embodiment, AA / AM and sodium polyacrylate as the simulated muscle layer 2 and the simulated subcutaneous layer 3 have moderate water absorption, flexibility, elasticity, and resilience. Therefore, similarly to the first embodiment, the injection practice liquid that has been injected is sufficiently and reliably absorbed, and a function of preventing liquid leakage from the needle hole trace after practice remaining in the injection practice device P3 is provided. Furthermore, it is possible to approximate feelings such as a tactile sensation when touching the injection practitioner P3, a puncture feeling when a needle is stabbed, and an injection feeling when an injection solution is injected into a human body. Therefore, in the injection training device P3 of the third embodiment, the injection operation can be practiced and the appropriate injection technique can be surely acquired, unlike the case of injection into the human body.

  In the injection training device P3 of the third embodiment, the simulated muscle layer 2 is made of a water-absorbing gel, so that a large amount of injection solution can be stored as in the first embodiment, and injection practice can be performed. It can be performed efficiently and can be easily managed.

  Furthermore, the injection training device P3 of the third embodiment can also be easily manufactured by simply encapsulating the polymer gel as the simulated muscle layer 2 and the simulated subcutaneous layer 3 inside the bag-like member 1. Therefore, the structure becomes simple and the manufacturing cost can be reduced.

 In the injection training device P3 of the third embodiment, at least one of the simulated muscle layer 2 and the simulated subcutaneous layer 3 only needs to be formed of a gel. Therefore, also in the third embodiment, depending on the combination of the material of the simulated muscle layer 2 and the material of the simulated subcutaneous layer 3, it is possible to use all the materials exemplified in the first embodiment as the simulated muscle layer 2. In addition, all materials exemplified in the first embodiment can be used as the simulated subcutaneous layer 3.

  In the present embodiment, it is preferable that at least one of the simulated muscle layer 2 and the simulated subcutaneous layer 3 is constituted by a water-absorbing gel.

  The injection training device of the present invention can be used, for example, when learning the technique of injection operation in medicine and nursing.

1: Bag-shaped member 1a: Simulated skin layer (surface sheet)
1b: Back sheet 2: Simulated muscle layer 3: Simulated subcutaneous layer 3a: Water-soluble gel 3b: Granular gel 4: Cosmetic layer 5: Protective layer 6: Holder 61: Holder body 65: Fixing band (attachment means)
P1-P3: Injection practice device

Claims (19)

A bag-like member having a top sheet and a back sheet, and having at least the top sheet as a simulated skin layer;
A simulated muscle layer disposed inside the bag-like member and having flexibility, elasticity and shape retention;
A simulated subcutaneous layer disposed at least between the simulated skin layer and the simulated muscle layer in the bag-like member and having higher flexibility than the simulated muscle layer;
An injection practice device, wherein at least one of the simulated muscle layer and the simulated subcutaneous layer contains a gel.   The injection training device according to claim 1, wherein at least one of the simulated muscle layer and the simulated subcutaneous layer includes a water-absorbing gel.   The simulated muscle layer is composed of acrylamide / acrylic acid copolymer (AA / AM), natural rubber (NR), styrene / butadiene rubber (SBR), isoprene rubber (IR), butadiene rubber (BR), chloroprene rubber (CR). , Acrylonitrile butadiene rubber (NBR), butyl rubber (isobutylene / isoprene rubber (IIR)), ethylene / propylene / diene rubber (EPDM), urethane rubber (U), silicon rubber (Si, Q), fluorine rubber (FKM), styrene -Based thermoplastic elastomer (TPS), olefin-based thermoplastic elastomer (TPO), ester-based thermoplastic elastomer, urethane-based thermoplastic elastomer (TPU), amide-based thermoplastic elastomer (TPAE), PVC-based thermoplastic elastomer (TPVC), Fluorine-based thermoplastic The injection training device according to claim 1 or 2, wherein one or more materials selected from an elastomer, a sponge (urethane foam / melamine foam), and konjac are mainly used.   The injection training device according to any one of claims 1 to 3, wherein the simulated muscle layer has a hardness measured by a durometer (A type) rubber hardness meter adjusted to A5.0 degrees to A29.0 degrees.   The injection simulator according to any one of claims 1 to 4, wherein the simulated subcutaneous layer has a faster water absorption rate than the simulated muscle layer.   6. The injection training device according to claim 1, wherein the simulated subcutaneous layer is adjusted to have a hardness of A7.0 or less by a durometer (A type) rubber hardness tester.   The injection simulator according to any one of claims 1 to 6, wherein the simulated subcutaneous layer has a viscosity of 4 to 2000 Pa · s adjusted by a B-type viscometer. The simulated subcutaneous layer is a semi-liquid state containing a gel aqueous solution in which a water-soluble gel is dissolved, and a granular gel,
The gel aqueous solution has viscosity and elasticity,
The injection granulator according to any one of claims 1 to 7, wherein the granular gel includes the water-absorbing gel.   The water-soluble gel is carboxymethylcellulose (CMC), methylhydroxypropylcellulose, ethylhydroxyethylcellulose, hydroxyethylcellulose, ethylcellulose, methylcellulose and their salts, polyvinyl alcohol (PVA), polyvinylpyrrolidone, carboxyvinyl polymer, polyacrylamide, polyacrylic. Claims mainly comprising one or more materials selected from acid salts, gum arabic, guar gum, locust bean gum, tamarind seed gum, xanthan gum, carrageenan, gellan gum, starch, gelatin, agar, pectin The injection training device according to 8.   The water-absorbing gel of the granular gel includes polyacrylate, polysulfonate, maleic anhydride, acrylamide / acrylic acid copolymer, ethylene / acrylate copolymer, ethylene / sulfonate copolymer, The injection training device according to claim 8 or 9, wherein one or more materials selected from ethylene / anhydrous maleate copolymers are mainly used. A bag-like member having a top sheet and a back sheet, and having at least the top sheet as a simulated skin layer;
An accommodation member disposed inside the bag-like member and having flexibility,
The injection training device, wherein the housing member includes a water-absorbing gel.   The injection training device according to claim 11, wherein the housing member includes a semi-solid gel.   The injection training device according to claim 11, wherein the housing member includes a semi-liquid gel.   The simulated skin layer is selected from ethylene-methacrylic acid copolymer (EMMA), nylon polyethylene, polyvinyl chloride (PVC), ethylene vinyl acetate copolymer (EVA), polyurethane, polypropylene, and polyethylene. Or the injection training device of any one of Claims 1-13 which has 2 or more types of materials as the main structure.   The injection training device according to any one of claims 1 to 14, wherein a skin-colored cosmetic layer is provided on the simulated skin layer.   The injection practice device according to any one of claims 1 to 15, wherein a protective layer for preventing penetration of the injection needle is provided on the back sheet.   The injection training device according to any one of claims 1 to 16, wherein the back sheet is made of a transparent or translucent material.   The injection training device according to claim 17, wherein the housing member or the simulated muscle layer and the simulated subcutaneous layer are made of a transparent or translucent material. The injection practice device according to any one of claims 1 to 18, and a holder for holding the injection practice device,
The holder includes a holder main body that holds at least a surface side of the injection training device, and attachment means for detachably attaching the holder main body to a part of a human body. With injection practice device.

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