JP6210553B2 - Syringe practice tool - Google Patents

Description

  The present invention relates to an injection technique practice tool, and more particularly to an injection technique practice tool suitable for blood collection and intravenous injection (including infusion) technique education and practice.

  As a wearable exercise tool that is worn on a human body or an arm of a human body model to practice blood sampling or intravenous injection techniques, the one shown in Patent Document 1 is known. That is, it consists of a soft thin skin member simulating the human skin and a soft thick member simulating the subcutaneous tissue or muscle tissue placed under this thin skin member, and blood vessels are formed in this thick member. This is a structure in which a simulated thin tubular member is embedded. When distributing simulated blood to the thin tubular member, the thin tubular member is looped, and each end of the thin tubular member is connected to a simulated blood storage container arranged outside the wearable exercise device to supply simulated blood. Circulate. In addition, it is also disclosed that a protective member that prevents the injection needle from penetrating is provided below the thick member in preparation for mounting on a human body.

  In Patent Document 2, a simulated blood vessel made of an elastic tube is stretched in a frame body, and a simulated muscle layer having fluidity or semi-fluidity is filled around the simulated blood vessel as necessary. An exercise tool that can reproduce the movement of blood vessels at the time of insertion is disclosed. In addition, it is also described that the frame can be attached to an arm, a leg, or the like by forming the frame from silicone rubber.

Utility Model Registration No. 2541332 Japanese Utility Model Publication No. 6-4768

  In Patent Document 1, a thin tubular member that simulates a blood vessel is embedded in a thick member that simulates muscle tissue. Therefore, the phenomenon that the blood vessel escapes when the injection needle is inserted hardly occurs, and there is a deviation from the actual feeling at the time of insertion. In Patent Document 2, the elastic tube is stretched to facilitate the movement at the time of insertion, and further, by providing a simulated muscle layer having fluidity or semi-fluidity around the simulated blood vessel, the movement is suppressed. Trying to make it closer to reality. However, Patent Document 2 does not disclose any specific explanation as to how an elastic tube as a simulated blood vessel is arranged in the frame body to easily cause a movement at the time of insertion. Indeed, Patent Document 2 discloses that an elastic tube is embedded and supported in a simulated muscle layer. However, in this method, since the elastic tube is surrounded by the simulated muscle layer, the elastic tube itself is difficult to move as in Patent Document 1. 3 and 4 of Patent Document 2 show that the elastic tube is disposed in the frame body without using the simulated muscle layer, but how to use the elastic tube without using the simulated muscle layer? There is no specific disclosure on how to support the frame within the frame and how the elastic tube moves upon insertion.

  In addition, the practice tools of Patent Documents 1 and 2 have a structure in which a simulated blood vessel (a thin tubular member or an elastic tube) is integrated in advance with a thick member or a frame. Therefore, the same practice tool must be used regardless of the practice content and the level of the practitioner, and it is difficult to practice according to the level of the practitioner. If practice is performed in accordance with the level of the practitioner, etc., it is necessary to prepare a plurality of types of exercise tools having different simulated blood vessel thicknesses, number of arrangements, arrangement angles, etc., and the cost is high.

  The present invention has been made in view of the above, and can generate a sense equivalent to the sense of movement of a blood vessel at the time of insertion of an injection needle more reliably than the prior art. It is an object of the present invention to provide an injection technique training tool that is closer to the sense of being inserted into the human body. In addition, an object of the present invention is to provide an injection technique training tool that can easily and inexpensively practice according to the level of the practitioner.

  In order to solve the above problems, an injection technique practice tool according to the present invention includes a base layer provided with a penetration prevention part for an injection needle, which is attached to a human body, and an intermediate layer made of an elastic material and stacked on the penetration prevention part. And a simulated blood vessel made of an elastic tube partially supported by the intermediate layer, and a cover layer covering the simulated blood vessel.

  The simulated blood vessel is preferably supported by engaging one end and the other end thereof. It is preferable that an arrangement angle of the simulated blood vessel can be adjusted on the intermediate layer. A plurality of engaging portions for engaging one end and the other end of the simulated blood vessel are provided in the intermediate layer, and one end and the other end of the simulated blood vessel are respectively selected from the plurality of engaging portions. It is preferable that the arrangement angle of the simulated blood vessel can be adjusted by engaging with each other. It is preferable that a plurality of the simulated blood vessels are provided, each of which can be selected from the plurality of engaging portions and arranged together.

  Moreover, it is preferable that the pressing force of the simulated blood vessel by the cover layer can be adjusted. The base layer preferably has a winding portion adjacent to the punch-out prevention portion, and is fixed by winding the winding portion around a human body. It is preferable that at least one of a fabric using an aramid fiber or a metal thin plate is used for the punch-out preventing portion. It is preferable that the base layer, the intermediate layer, the simulated blood vessel, and the cover layer are formed of separate members and are of an assembly type that can be integrated or disassembled with each other.

  In the present invention, a simulated blood vessel made of an elastic tube is supported by being partially engaged on the intermediate layer, and preferably supported by engaging one end and the other end thereof, and is formed of a member separate from the intermediate layer. Covered by a cover layer. That is, since the simulated blood vessel is only partially engaged and is sandwiched between the intermediate layer and the cover layer, the moving motion is caused by the force when the injection needle is inserted. Cheap. Therefore, it is possible to obtain a feeling very close to that actually inserted into a blood vessel of a human body, and it is suitable for practicing an injection technique. In addition, since the base layer has a penetration prevention part that prevents the injection needle from penetrating, it can be inserted safely even when worn on the arm, leg, etc. of the human body, and practice of injection techniques with a sense of reality can be performed. .

  In addition, by adopting a configuration in which the placement angle of the simulated blood vessel can be adjusted, it is possible to make the state closer to the placement (orientation) of the blood vessel of the actual human body. It becomes possible.

  In addition, since the base layer, intermediate layer, simulated blood vessel, and cover layer are formed from separate members and are assembly types that can be integrated or disassembled with each other, replacement of simulated blood vessels, change in the number of placement, change in placement angle, etc. It is possible to practice according to the content of the practice and the level of the practitioner. In addition, since it is not necessary to replace the injection technique practice tool itself, it is possible to realize practice suitable for the level of the practitioner at a low cost.

FIG. 1 is a perspective view showing an overall configuration of an injection technique practice tool according to one embodiment of the present invention. 2A and 2B are diagrams showing the base layer, where FIG. 2A is a plan view and FIG. 2B is a cross-sectional view taken along line AA of FIG. 3A and 3B are views showing the intermediate layer, in which FIG. 3A is a bottom view, FIG. 3B is a plan view, and FIG. 3C is a cross-sectional view along line BB in FIG. 4A to 4C are plan views showing examples of simulated blood vessels having different thicknesses. FIGS. 5A to 5D are diagrams showing examples of arrangement of simulated blood vessels. 6A and 6B are views showing the cover layer, where FIG. 6A is a bottom view, FIG. 6B is a plan view, FIG. 6C is a cross-sectional view taken along the line C-C in FIG. The figure which showed the process made to fit to a part, (e) is the figure which showed the state which the fitting member fitted to the engaging part. FIGS. 7A to 7D are views for explaining how to use the injection technique training tool of the embodiment. FIG. 8 is a perspective view of an injection technique training tool according to another embodiment of the present invention. FIG. 9 is a view showing a base layer according to another embodiment, wherein (a) is a plan view and (b) is a side view. FIG. 10 is a view showing a cover layer according to another embodiment, wherein (a) is a bottom view, (b) is a plan view, and (c) is a view showing a state in which the cover layer is mounted. .

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. As shown in FIG. 1, the injection technique training tool 1 of this embodiment includes a base layer 10, an intermediate layer 20, a simulated blood vessel 30, and a cover layer 40.

  As shown in FIG. 2, the base layer 10 is a substantially rectangular shape having a size that can be wound around and fixed to an arm or a leg of a human body, and is made of a flexible fabric including a knitted fabric, a woven fabric, and a non-woven fabric. It is formed. For example, when winding around the arm, the width is about 300 mm and the length is about 180 mm, and the range of 100 mm in the center in the width direction is used as the penetration preventing portion 11, and both sides of the winding portion 12 are wound around and fixed to the arm. 13 The winding portions 12 and 13 are sized so that at least a portion thereof overlaps when wound around the arm, and the opposing surfaces in the overlapping range are joined and fixed. In the present embodiment, a female or male hook-and-loop fastener 12 a is attached to the surface of one winding part 12, and a male or female hook-and-loop fastener 13 a that engages with the hook-and-loop fastener 12 a is attached to the back surface of the other winding part 13. The hook and loop fasteners 12a and 13a are superposed and joined together.

  In this embodiment, the base layer 10 is formed by overlapping two fabrics 10a and 10b and stitching the peripheral portion thereof, and the punch-out prevention unit 11 is formed of aluminum or the like between the two fabrics 10a and 10b. The metal thin plates (including sheets, films, etc.) 11a are sandwiched, and the fabrics 10a and 10b are sewn along the length direction on both sides thereof, so that the metal thin plates 11a are not shifted left and right. ing. The penetration prevention part 11 can also be comprised using the cloth etc. which knitted the aramid fiber other than using the metal thin plate 11a. In this case, similarly to the metal thin plate 11a, the fabric may be held between the fabrics 10a and 10b, or the punch-out preventing portion 11 is configured only by a fabric formed by knitting aramid fibers, and usually on both sides thereof. It is good also as a structure which joined the winding parts 12 and 13 which consist of this fabric by direct sewing.

  The mid layer 20 is made of an elastic material. Specifically, since a simulated blood vessel 30 to be described later is supported on the intermediate layer 20, when the injection needle is inserted into the simulated blood vessel 30, a motion that causes the simulated blood vessel 30 to shake can be generated. In addition, when the injection needle accidentally penetrates the simulated blood vessel 30, the same feeling as when the injection needle penetrates the actual blood vessel, that is, a degree corresponding to human muscles. A material having elasticity is used as a material. Synthetic rubbers such as ethylene / propylene copolymer, urethane rubber and silicone rubber, natural rubber, or soft synthetic resins such as polyurethane foam can be used. A polyurethane foam having a thickness of about 5 to 15 mm is preferred.

  As shown in FIG. 1, the intermediate layer 20 is laminated on the punch-out preventing portion 11 of the base layer 10. In the present embodiment, as shown in FIGS. 2 and 3, one end edge in the length direction of the front surface of the punch-through prevention unit 11 and the back surface of the intermediate layer 20 is used. Surface fasteners 11b and 20a are provided in the vicinity of the other end edge so as to be joined. The hook-and-loop fasteners 11b and 20a may be either a male side or a female side.

  Engaging portions 21 a to 21 c and 22 a to 22 c for engaging the simulated blood vessel 30 are provided on one end edge and the other end edge on the surface side of the intermediate layer 20. The engaging portions 21a to 21c and 22a to 22c may have any shape and structure as long as the one end 30a and the other end 30b of the simulated blood vessel 30 can be engaged. In the present embodiment, the intermediate layer 20 is configured by pins protruding from the back surface side to the front surface side. In addition, as for the pin which comprises these engaging parts 21a-21c and 22a-22c, the head side is located in the back surface of the intermediate | middle layer 20, and when fixing the hook_and_loop | surface fastener 20a to a back surface, this head | fastener 20a uses this head. It is fixed to the intermediate layer 20 by covering the part (see FIG. 3C).

  As shown in FIG. 4, the simulated blood vessel 30 is engaged at one end 30 a and the other end 30 b with a ring member or a hook member that can be engaged with the engaging portions 21 a to 21 c and 22 a to 22 c made of pins. Joint portions 31 and 32 are provided. One engaged portion 31 is engaged with one of engaging portions 21 a to 21 c provided near one end edge of the intermediate layer 20, and the other engaged portion 32 is adjacent to the other end edge of the intermediate layer 20. It engages and is arranged in any of the provided engaging parts 22a-22c (refer FIG. 5, FIG. 7).

  Here, in the present embodiment, three engagement portions 21 a to 21 c and 22 a to 22 c are provided in the width direction of the intermediate layer 20. Therefore, for example, as shown in FIG. 5 (a), one engaged portion 31 of the simulated blood vessel 30 is engaged with an engaging portion 21b located at the center of one end edge side of the intermediate layer 20, and the other covered portion is engaged. When the engaging portion 32 is engaged with the engaging portion 22b located in the center on the other end edge side corresponding to the engaging portion 21b located in the center on the one end side, the simulated blood vessel 30 is moved in the length direction of the intermediate layer 20. It will be placed in an almost straight posture. That is, when each of the engaged portions 31 and 32 of the simulated blood vessel 30 is engaged by selecting one of the engaging portions 21a to 21c and the other end edges 22a to 22c facing each other, the base layer 10 is moved. When wrapped around the arm, the simulated blood vessel 30 is arranged in a substantially straight posture along the arm. When engaged between the engagement portions 21b and 22b located at the center, the arms are arranged in a straight posture at approximately the center position in the width direction of the arm, and between the engagement portions 21a and 22a located on the respective side portions or between the engagement portions 21b and 22b. When engaged between the joint portions 21c and 22c, they are arranged in a substantially straight posture in the longitudinal direction of the arm on the left side or the right side in the width direction of the arm.

  In the present embodiment, since a plurality of engaging portions 21 a to 21 c and 22 a to 22 c are provided in the width direction of the intermediate layer 20, for example, one engaged portion 31 of the simulated blood vessel 30 is connected to one end edge side of the intermediate layer 20. 5 is engaged with the engaging portion 21c located on the right side of the drawing, and the other engaged portion 32 is engaged with the engaging portion 22a located on the left side of the drawing on the other end edge side of the intermediate layer 20, FIG. As shown in (b), when wrapped around the arm, the simulated blood vessel 30 is set at an arrangement angle inclined rightward from the arm side toward the wrist side. One engaged portion 31 of the simulated blood vessel 30 is engaged with an engaging portion 21a located on the left side of the figure on one end edge side of the intermediate layer 20, and the other engaged portion 32 is connected to the other end edge side of the intermediate layer 20. In FIG. 5, when the engagement portion 22b located at the center of the figure is engaged, the simulated blood vessel 30 has an arrangement angle inclined leftward from the arm side to the wrist side as shown in FIG. The inclination angle based on the state of 5 (a) is set at a shallower angle than in the case of FIG. 5 (b). By arbitrarily selecting the engaging portions 21a to 21c and 22a to 22c for engaging the engaged portions 31 and 32 of the simulated blood vessel 30, the arrangement angle of the simulated blood vessel 30 can be set at various angles. The actual blood vessels of the arm may be close to a straight line, or may be slightly slanted, so that by adjusting the arrangement angle of the simulated blood vessels 30, the blood vessels can be made closer to the human body. In addition, since a plurality of engaging portions 21a to 21c and 22a to 22c are provided in the width direction of the intermediate layer 20, it is possible to arrange a plurality of, for example, three simulated blood vessels 30 together (FIG. 7). (See (c)) It is also possible to arrange one straightly and the other obliquely (see FIG. 5D). As a result, the image can be brought closer to the actual blood vessel arrangement of the arm.

  In addition, in this embodiment, although the engaging parts 21a-21c and 22a-22c are provided 3 each, of course, this is an example, 2 may be sufficient, and it is 4 or more, Also good. Moreover, it is also possible to adopt a configuration in which one layer is provided at an appropriate position in the width direction of the intermediate layer 20.

  The simulated blood vessel 30 is formed using an elastic tube. By using the elastic tube, resistance and blurring at the time of insertion of the injection needle occur, and a feeling close to reality can be obtained. As materials, synthetic rubbers such as ethylene / propylene copolymer, urethane rubber and silicone rubber, natural rubber, or soft synthetic resins such as polyurethane foam can be used. In order to obtain a close sensation, it is preferably formed from urethane rubber. The thickness of the peripheral wall of the simulated blood vessel 30 is preferably in the range of 0.2 to 2 mm, more preferably in the range of 0.5 to 1.5 mm. The diameter of the simulated blood vessel 30 is not particularly limited as long as it is close to the thickness of a blood vessel that is actually subject to blood collection, intravenous injection, or the like. For example, the simulated blood vessel 30 has a diameter in the range of 1 to 30 mm, preferably 2 to 10 mm. The thing of the range of is used. Further, as shown in FIGS. 4A to 4C, a plurality of simulated blood vessels 30 having different thicknesses may be prepared, and those having an appropriate thickness may be selected and used. 4A illustrates a 3 mm diameter type, FIG. 4B illustrates a 5 mm diameter type, and FIG. 4C illustrates a 7 mm diameter simulated blood vessel 30. FIG. The simulated blood vessels 30 having different thicknesses are preferably provided with marks such as coloring the vicinity of the end portions 30a and 30b with different colors for the convenience of attachment. Further, when a plurality of engaging portions 21a to 21c and 22a to 22c are provided in the width direction of the intermediate layer 20 as in this embodiment, a plurality of simulated blood vessels 30 having different thicknesses are arranged. May be.

  The simulated blood vessel 30 may be used without enclosing the simulated blood, but it is preferable to enclose the simulated blood. Since the simulated blood vessel 30 is made of an elastic tube as described above, a sense of resistance and a sense of movement at the time of insertion can be obtained, and when practicing that point, a type that does not enclose simulated blood is also possible. . However, in the case of making it closer to the sensation at the time of intravenous injection or for practicing blood sampling, a sample in which simulated blood is enclosed is used. The simulated blood is preferably water-soluble and has a color and viscosity similar to that of living blood. Since the simulated blood vessel 30 is made of an elastic tube as described above, even if an injection needle is inserted, the needle hole is almost blocked by the elasticity of the material, and the simulated blood is difficult to leak. Therefore, the injection of the simulated blood can be easily performed by inserting the injection needle into the simulated blood vessel 30, and it is not always necessary to provide the dedicated simulated blood filling hole in the simulated blood vessel 30, and it can be used repeatedly. There are advantages.

  The simulated blood vessel 30 is covered with a substantially rectangular cover layer 40 as shown in FIG. The injection needle is placed on the simulated blood vessel 30 and penetrates the cover layer 40 and is inserted into the simulated blood vessel 30. Therefore, it is preferable that the cover layer 30 has a characteristic close to that of the tissue until reaching the blood vessel when it is inserted into the human body, mainly skin tissue. Therefore, the cover layer 40 is preferably made of synthetic rubbers such as ethylene / propylene copolymer, urethane rubber, and silicone rubber, natural rubber, or soft synthetic resins such as polyurethane foam. It is more preferable to use a silicone rubber having a thickness of about 0.5 to 2 mm as a thing close to the feeling at the time of insertion.

  The cover layer 40 is bonded to the intermediate layer 20 after covering the simulated blood vessel 30. The joining means is optional, but in this embodiment, as shown in FIGS. 6A to 6C, the lower end opening surface penetrates through the cover layer 40 at the one end edge and the other end edge in the longitudinal direction and goes downward. The fitting members 41a to 41c and 42a to 42c, which are hollow pins whose head portions are supported on the upper surface of the cover layer 40, are provided and joined together. That is, the fitting members 41a to 41c and 42a to 42c are fitted to the engaging portions 21a to 21c and 22a to 22c made of pins protruding from the intermediate layer 20, and both are joined (FIG. 6D). ), (E)).

  The cover layer 40 is disposed on the simulated blood vessel 30 as described above, but the degree of fitting (fitting depth) between the fitting members 41a to 41c and 42a to 42c and the engaging portions 21a to 21c and 22a to 22c. By adjusting the distance (S), the force with which the cover layer 40 presses the simulated blood vessel 30 can be adjusted. By adjusting the pressing force, it is possible to adjust the ease of movement of the simulated blood vessel 30 when the injection needle is inserted.

  The injection technique training tool 1 of this embodiment is used as follows. This will be described with reference to FIG. First, as shown in FIG. 7 (a), the back surface of the penetration preventing part 11 of the base layer 10 is pressed against the arm, the winding parts 12 and 13 are turned in the circumferential direction of the arm, and the hook-and-loop fasteners 12a and 13a are connected to each other. Superimpose and join. Next, as shown in FIG.7 (b), the intermediate | middle layer 20 is joined to the penetration prevention part 11 of the base layer 10 via the hook_and_loop | surface fasteners 11b and 20a. Thereby, it will be in the state where the engaging parts 21a-21c and 22a-22c which consist of a pin protruded to the surface side. Next, at least one simulated blood vessel 30 is disposed. For example, as illustrated in FIG. 7C, the engaged portions 31 and 32 provided on the one end 30 a side and the other end 30 b side of the simulated blood vessel 30 are respectively connected to the engaging portions 21 a to 21 c and 22 a to 22 c. And three are arranged. Next, as shown in FIG. 7D, the cover layer 40 is positioned on the simulated blood vessel 30, and the fitting members 41a to 41c and 42a to 42c are fitted to the engaging portions 21a to 21c and 22a to 22c. Match. Since the injection technique practice tool 1 according to the present embodiment is assembling as described above, when arranging the simulated blood vessel 30, an arrangement angle suitable for practice, the number of arrangements, the thickness of the simulated blood vessel 30 to be arranged, and the like are selected. Can be practiced according to the level of each individual practitioner.

  When practicing, an injection needle is inserted into the simulated blood vessel 30 through the cover layer 40 serving as a skin tissue. In this embodiment, since the cover layer 40 is made of silicone rubber having a predetermined thickness, a sensation close to that when an injection needle is inserted into the human skin is obtained, and the simulated blood vessel 30 is made of an elastic tube. It is possible to reproduce a sense of resistance close to reality, a movement of blood vessels, and the like. Moreover, since the pressing force of the cover layer 40 can be adjusted as described above, it can be easily adjusted to the one close to the actual movement according to the arrangement angle, the number of arrangements, the thickness, etc. of the simulated blood vessel 30. Can do.

  If the simulated blood vessel 30 is pierced during practice, or if the simulated blood vessel 30 is not inserted after penetrating the cover layer 40, the injection needle will pierce the intermediate layer 20. Since the intermediate layer 20 is also made of an elastic material, a sensation close to that of a muscular puncture can be obtained, and a sensation of actually piercing a blood vessel or piercing outside a blood vessel can be obtained. Furthermore, when the intermediate layer 20 is accidentally pierced, in the present embodiment, since the piercing prevention portion 11 is located in the lower layer, the injection needle stops there and is wrapped around the arm of the person who is wrapping the injection technique practice tool 1. There is no damage. Therefore, according to the present embodiment, it is possible to practice the injection technique with the injection technique training tool 1 on a person with peace of mind, enabling realistic practice, improving the skill of the practitioner, We can expect a high contribution towards

  In this embodiment, by inserting an injection needle into the simulated blood vessel 30, it is suitable for practicing intravenous injection and blood collection. However, the portion other than the portion where the simulated blood vessel 30 is disposed is a cover corresponding to skin tissue. Since it has a laminated structure with the layer 40 and the intermediate layer 20 corresponding to muscle tissue, it is also possible to use it to practice procedures such as subcutaneous injection, intradermal injection, and intramuscular injection.

  In the above description, the base layer 10 is wrapped around the person's arm, and then the intermediate layer 20 is laminated. Further, the simulated blood vessel 30 is disposed and covered with the cover layer 40. Before the operation, the intermediate layer 20, the simulated blood vessel 30 and the cover layer 40 are assembled on the punch-out preventing portion 11 of the base layer 10, that is, set in the state shown in FIG. You may make it wind around. In any case, in the injection technique training tool 1 of the present embodiment, the base layer 10, the intermediate layer 20, the simulated blood vessel 30 and the cover layer 40 are all made of different members, and are joined and engaged with each other. Or the assembly type that can be disassembled by releasing the connection or engagement. For example, with the base layer 10 attached to the arm, the cover layer 40 is removed, and only the simulated blood vessel 30 is suitable for practice content, level, etc. It is possible to change to an arrangement angle, an arrangement number, a thickness, and the like. Therefore, it is possible to quickly respond to various variations of practice according to the skill level of the practitioner, the purpose of the practice, and the like.

  The injection technique training tool 1 of the present invention is not limited to the above embodiment, and for example, a base layer 100 as shown in FIGS. 8 to 9 can be used. This base layer 100 is processed in advance from a stretchable fabric into a cylindrical shape. A predetermined range in the circumferential direction is a punch-out prevention unit 110 formed by attaching a metal thin plate 110a, and another range in the circumferential direction is a winding unit 120 wound around an arm or the like. For example, a hook-and-loop fastener 110b as a joining means is attached to one end side and the other end side in the longitudinal direction of the punch-out preventing portion 110, and an intermediate layer (not shown) is provided via the hook-and-loop fastener 110b in the same manner as described above. And a simulated blood vessel (not shown) is set.

When this cylindrical base layer 100 is used, it can be mounted simply by inserting an arm from the open end, and because it uses a stretchable fabric, it has high adhesion to the arm and the like. There is no movement during insertion. Note that the base layer 10 shown in FIGS. 1 and 2 can also improve the adhesion to the arm or the like during winding by using a stretchable fabric.

Further, the cover layer 40 shown in FIG. 6 has only a size enough to cover the intermediate layer 20, but as shown in FIG. 10, the cover layer 400 having a width wider than the area of the intermediate layer is formed. It can also be used. The cover layer 400 covers the simulated blood vessel arranged on the intermediate layer, and is arranged with each end in the width direction joined to the base layer 10. For example, the surface fastener 410 is attached to the back side of each end in the width direction of the cover layer 400, and the surface fastener 120a that engages with the surface fastener 410 is attached to the winding portion 120 of the base layer 10. To be joined. Reference numerals 411a to 411c and 412a to 412c are fitting members that engage with engaging portions protruding from the intermediate layer.

The cover layer 40 shown in FIG. 6 was configured by fitting the fitting members 41a to 41c and 42a to 42c into the engaging portions 21a to 21c and 22a to 22c. In the aspect shown, it is integrated not only by fitting the fitting members 411a to 411c and 412a to 412c into the engaging portions, but also by joining the hook-and-loop fastener 410 to the base layer 100. Therefore, the movement of the cover layer 40 during the insertion of the injection needle is suppressed, and the injection needle can be easily inserted. Moreover, since it joins via the hook_and_loop | surface fasteners 410 and 120a, it is possible to join, pulling the cover layer 40 in the width direction, and it can also adjust the pressing force of the simulated blood vessel. In the embodiment shown in FIGS. 1 to 6, it is also possible to use a wide cover layer 40 as shown in FIG. 10 and to join the base layer 10.

Moreover, in the aspect shown in FIG. 6, although hollow pins are used as the fitting members 41a to 41c and 42a to 42c, the fitting members 41a to 41c and 42a to 42c and the engaging portions 21a to 21c and 22a to 22c are used. Can be fitted with a hollow pin while supporting the simulated blood vessel 30, either of which can be fitted with a hollow pin, both of which are fitted with a hollow cylindrical member interposed between them using a normal pin It is also possible to do.

1 injection technique training tool 10,100 base layer 11, 110 penetration prevention part 11a, 110a metal thin plate 12, 13, 120 winding part 20 intermediate layer 21a-21c, 22a-22c engaging part 30 simulated blood vessel 31, 32 Joint part 40,400 Cover layer 41a-41c, 42a-42c Fitting member

Claims (5)

A base layer equipped with a needle needle penetration prevention part, which is attached to the human body;
An intermediate layer made of an elastic material and laminated on the punch-out prevention unit,
On the intermediate layer, a simulated blood vessel composed of an elastic tube partially engaged and supported,
Have a cover layer covering the simulated blood vessel,
A plurality of engaging portions for engaging one end and the other end of the simulated blood vessel are provided in the intermediate layer,
An injection technique practice tool , wherein an arrangement angle of the simulated blood vessel can be adjusted by selecting and engaging one end and the other end of the simulated blood vessel from among the plurality of engaging portions . The simulated blood vessel comprises a plurality of, respectively, the injection technique training device according to claim 1, which is positionable in a plurality together selected from the plurality of engaging portions. The injection technique practice tool according to claim 1 or 2, wherein the pressing force of the simulated blood vessel by the cover layer is adjustable. The injection technique practice tool according to any one of claims 1 to 3 , wherein at least one of a fabric using an aramid fiber or a metal thin plate is used for the punch-out preventing portion. The injection technique practice tool according to any one of claims 1 to 4 , wherein the base layer, the intermediate layer, the simulated blood vessel, and the cover layer are formed of separate members, and are an assembly type that can be integrated or disassembled with each other.

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