Injection needle puncture training model

Abstract

To provide an injection needle puncture training model capable of being used multiple times without using actual animals.SOLUTION: An injection needle puncture training model 1 includes: a first member 10 made of a resin having a configuration simulating the area around the injection needle of a leg of an animal; a second member 20 made of a resin same as or harder than a first member 10 with the hardness same as or harder than the first member 10, which is placed in a part thereof on at least one of the two sides of the first member 10; a simulated blood vessel 30 made of a resin, which is placed over the first member 10 and the second member 20 on one side of the first member 10 and the second member 20; and a simulated skin 40 made of a resin, which covers at least a part of the first member 10, the second member 20, and the simulated blood vessel 30, and which is arranged to cover all members of the first member 10, the second member 20 and the simulated blood vessel 30.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a model for training in the technique of inserting an injection needle or a blood sampling needle into a blood vessel of an animal such as a dog. [Background technology]

[0002] Conventionally, there is an animal vascular model for training in animal experiment procedures, which is used for training in procedures for puncturing an injection needle or a blood collection needle when treating animals such as dogs or collecting blood. This animal vascular model for training in animal experiment procedures is configured such that a simulated blood vessel is enclosed near the surface of a gel-like member that imitates the tissue or epidermis layer of an animal, and the member made of the gel-like member can be attached to an animal. In this way, since the animal vascular model for training in animal experiment procedures is made of a gel-like member, it has flexibility and can have a similar feel to the tissue of an actual animal (for example, see Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 11-167342 Summary of the Invention [Problem to be solved by the invention]

[0004] However, the above-mentioned conventional animal vascular models for training animal experimental techniques are attached to the area of ​​an actual animal from which blood is drawn (forelimbs or hind limbs) when in use (during puncture training), which results in a problem of lack of convenience, such as the need to prepare the animal for puncture training.

[0005] The present invention has been made in consideration of these problems, and has an object to provide a model for injection needle puncture training that does not require an actual animal and can be used multiple times. [Means for solving the problem]

[0006] The present invention has been made to solve at least some of the problems described above, and can be realized as the following application examples. Note that the reference symbols and supplementary explanations in parentheses in this section indicate the corresponding relationship with the embodiments described later in order to aid in understanding the present invention, and do not limit the present invention in any way.

[0007] [Application example 1] The injection needle puncture training model (1) described in Application Example 1 is: a first member (10) made of resin and shaped to resemble the area of ​​the leg of an animal where an injection needle will be inserted; a second member (20) made of a resin having a hardness equal to or greater than that of the first member (10), the second member (20) being disposed on at least a portion of the first member (10); a resin simulated blood vessel (30) disposed across the first member (10) and the second member (20); a resin-made artificial skin (40) that covers at least a portion of the first member (10), the second member (20) and the simulated blood vessel (30) and is arranged so as to cover all of the first member (10), the second member (20) and the simulated blood vessel (30); The gist of the system is that it is equipped with the following:

[0008] In such a needle puncture training model (1), a first member (10) made of resin is shaped to imitate the area of ​​an animal's leg where a needle will be inserted for blood sampling, etc., and a second member (20) made of resin that is equal to or harder than the first member (10) is arranged on at least a part of the first member (10).

[0009] It also includes a resin simulated blood vessel (30) that is arranged across the first member (10) and the second member (20), and further includes a resin simulated skin (40) that covers at least a portion of the first member (10), the second member (20), and the simulated blood vessel (30) and is arranged so as to cover all of the first member (10), the second member (20), and the simulated blood vessel (30).

[0010] Therefore, since the simulated blood vessel (30) is covered with the simulated skin (40), when attempting to puncture the simulated blood vessel (30) with an injection needle, it is necessary to locate the position of the simulated blood vessel (30) by feeling it through the simulated skin (40). At this time, since the simulated skin (40) is made of resin, it has the same elasticity and softness as the skin of an actual animal, and therefore provides a high degree of imitation when locating a blood vessel.

[0011] In addition, since the simulated blood vessel (30) is disposed between the second member (20) made of hard resin and the simulated skin (40), when the injection needle is inserted through the skin, the simulated blood vessel (30) moves in such a way that it moves away from the injection needle to some extent, thereby increasing the degree of simulation at the time of insertion.

[0012] Furthermore, since the first member (10) mimics the shape of an animal's hind leg and has a structure in which the second member (20), simulated blood vessel (30), and simulated skin (40) are layered, it is possible to create the sensation of grasping a hind leg with one's hand when inserting the injection needle, thereby increasing the degree of simulation when inserting the needle.

[0013] [Application example 2] The model (1) for training in injection of a needle according to Application Example 2 is the model (1) for training in injection of a needle according to Application Example 1, The present invention is characterized in that it comprises a liquid injection section (50) for injecting liquid into the simulated blood vessel (30).

[0014] Such a needle puncture training model (1) can inject liquid into the simulated blood vessel (30) by the liquid injecting section (50). Therefore, when the needle is inserted into the simulated blood vessel (30), liquid flows from the simulated blood vessel (30) through the needle into the tip of the syringe (5). In other words, it is possible to simulate the state in which blood flows from a blood vessel into the tip of the needle when the needle is inserted into an actual blood vessel, thereby improving the degree of simulation of puncture training.

[0015] [Application example 3] The model (1) for training in injection of a needle according to Application Example 3 is the model (1) for training in injection of a needle according to Application Example 1, The gist of the present invention is that the device includes a columnar simulated tibial and fibular portion (60) made of a material equivalent to or harder than the second member (20), which is placed between the second member (20) and the simulated skin (40) and in which the simulated blood vessel (30) is placed overlapping the first member (10) and the second member (20).

[0016] In such a needle puncture training model (1), a simulated tibia-fibular portion (60) made of a material equivalent to or harder than the second member (20) is placed between the second member (20) and the simulated skin (30), thereby making it possible to increase the degree of simulation according to the individual differences of the animal being trained to puncture with the needle.

[0017] [Application example 4] The model (1) for training in injection needle insertion described in Application Example 4 is characterized in that in the model (1) for training in injection needle insertion described in Application Example 1, the resin of the simulated blood vessel (30) is a thermoplastic elastomer.

[0018] In such a needle puncture training model (1), the simulated blood vessel (30) is made of a thermoplastic elastomer. When the thermoplastic elastomer is formed into a tube, its elasticity and hardness are similar to those of a real blood vessel. Therefore, when a veterinarian or the like punctures an animal with a needle to draw blood, the sensation of the needle tip penetrating the blood vessel is close to that of a real blood vessel, and the degree of simulation of needle puncture training can be improved.

[0019] [Application example 5] The injection needle training model (1) described in Application Example 5 is characterized in that, in the injection needle puncture training model (1) described in any one of Application Examples 1 to 4, the animal's leg is a dog's leg.

[0020] Such a needle insertion training model (1) is suitable for needle insertion training for blood sampling from dogs, which are often treated as subjects in veterinary clinics. [Brief description of the drawings]

[0021] [Figure 1]FIG. 1 is an external view showing a schematic configuration of a model for training in injection of an injection needle in a first embodiment. [Diagram 2] 1A to 1C are diagrams illustrating a method of using the injection needle puncture training model in the first embodiment. [Diagram 3] 1A to 1C are diagrams illustrating a method of using the injection needle puncture training model in the first embodiment. [Figure 4] FIG. 11 is an external view showing a schematic configuration of a model for training in injection needle insertion according to a second embodiment. [Diagram 5] FIG. 11 is a diagram showing a method of using the injection needle puncture training model in the second embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0022] Hereinafter, an embodiment to which the present invention is applied will be described with reference to the drawings. Note that the embodiment of the present invention is not limited to the following embodiment, and various forms may be adopted as long as they fall within the technical scope of the present invention.

[0023] [First embodiment] (Configuration of the injection needle puncture training model) The configuration of a model 1 for injection needle puncture training will be described with reference to Fig. 1. Fig. 1 is an external view showing a schematic configuration of a model 1 for injection needle puncture training in a first embodiment. In the first embodiment, a dog will be described as the subject of injection needle puncture training.

[0024] As shown in FIG. 1, the injection needle puncture training model 1 includes a first member 10, a second member 20, a simulated blood vessel 30, and simulated skin 40.

[0025] The first member 10 is a resin member shaped to resemble the side of an animal's leg near the portion where an injection needle is inserted. In this first embodiment, in order to form a urethane or polyethylene sponge material into a shape that resembles the side shape of a dog's hind leg, as shown in Fig. 1, the first member 10 is processed into a shape that resembles the dog's knee joint 21 to tarsal joint 22 in the vertical direction, and also resembles the Achilles tendon 11 to heel 12 in the horizontal direction, unlike the second member 20 described later.

[0026] The second member 20 is a member disposed on one side of the first member 10. In this first embodiment, the knee joint 21 to the tarsal joint 22 of the dog's hind leg are simulated, but unlike the above-mentioned first member 10, the portion from the Achilles tendon 11 to the heel 12 is not simulated.

[0027] The second member 20 is a resin member that is equal to or harder than the first member 10, and is specifically formed by adhering a thin plate made of ABS resin or polycarbonate resin to one side of the same sponge material as the first member 10 with adhesive, and adhering the opposite side to the first member 10 with adhesive. In this way, by forming the second member 20 by attaching a thin plate made of ABS or polycarbonate resin to the surface of a lightweight sponge material, it is possible to ensure strength and achieve weight reduction.

[0028] The simulated blood vessel 30 is a simulated blood vessel that is positioned on one side (the second member side) of the dog's hind leg portion formed by the first member 10 and the second member 20, spanning both the first member 10 and the second member 20, and in this embodiment, simulates the lateral saphenous vein (Safena) of a dog.

[0029] The simulated blood vessel 30 is a tube made of a thermoplastic elastomer resin with an outer diameter of 5 mm and an inner diameter of 3 mm, and in the present first embodiment, a tube made of Crystalgel (registered trademark) manufactured by Tanac Corporation is used.

[0030] The simulated skin 40 is a urethane resin plate with a thickness of 0.5 mm, and has a sticky gel material applied to the back side. The simulated skin 40 is placed over the first member 10 and the second member 20, covering the simulated blood vessels 30 so that they are partially invisible.

[0031] The liquid injection part 50 is a part for injecting liquid such as water into the simulated blood vessel 30, and specifically, is a syringe with a nozzle 51, a syringe 52, and a plunger 53 without the needle, and is used by inserting the nozzle 51 into the end of the simulated blood vessel 40. The syringe 52 is filled with liquid such as water, and is used with some pressure applied by the plunger 53.

[0032] (How to use the needle insertion training model) Next, a method of using the injection needle puncture training model will be described with reference to Figures 2 and 3. Figures 2 and 3 are diagrams showing a method of using the injection needle puncture training model. In this first embodiment, a case where an injection needle is inserted into the left hind leg of a dog in a recumbent position will be described.

[0033] During needle insertion training, the needle insertion training model 1 is used as shown in the following (1) to (7).

[0034] (1) As shown in Fig. 2(a), the simulated blood vessel 30 is placed on the surface of the first member 10 and the second member 20 adhered thereto. At this time, the simulated blood vessel 30 is placed from the ankle joint 22 toward the upper right diagonally from the ankle joint 22 to the Achilles tendon 11 so that the liquid injection part 50 is located on the Achilles tendon 11 side.

[0035] (2) Next, as shown in Fig. 2(b), the simulated skin 40 is placed so that the upper and lower parts of the first member 10 and the second member 20 cover the simulated blood vessel 30, leaving approximately one-third of their vertical length. At this time, the epidermis side of the simulated skin 40 faces the front, and the adhesive back side faces the simulated blood vessel 40.

[0036] (3) Next, as shown in FIG. 2(c), the epidermis of the simulated skin 40 is wiped with alcohol-soaked cotton to simulate disinfection. (4) Next, as shown in FIG. 3(a), the trainee uses his / her left hand to pull the simulated skin 40 slightly toward the outside of the simulated blood vessel 30 (in the direction indicated by the arrow in the figure) to apply tension, and then grasps the entire thing with his / her left hand.

[0037] (5) Next, as shown in Fig. 3(b), while maintaining the position of (4) with the left hand, hold the syringe 5 with the right hand and insert the needle into the simulated blood vessel 30 through the simulated skin 40. When the needle is successfully inserted into the simulated blood vessel 30, the liquid (water) filled in the liquid injection section 50 and the simulated blood vessel 30 flows back from the simulated blood vessel 30 into the tip of the syringe 5, confirming that the needle has been inserted successfully.

[0038] (6) After that, the syringe 5 is tilted so that the angle of the injection needle is shallow with respect to the simulated blood vessel 30, and the injection needle is inserted deeply into the simulated blood vessel 30 to practice blood collection. (7) After that, the injection needle is removed from the simulated blood vessel 30, and bleeding is stopped with cotton wool, completing the puncture training.

[0039] (Features of the needle insertion training model) In the above-mentioned model 1 for injection needle puncture training, the simulated blood vessel 30 is covered with the simulated skin 40, so when attempting to puncture the simulated blood vessel 30 with an injection needle, it is necessary to confirm the position of the simulated blood vessel 30 by feeling around on the simulated skin 40. At this time, since the simulated skin 40 is made of resin, it has the same elasticity and softness as the skin of an actual animal, and therefore provides a high degree of simulation when finding a blood vessel.

[0040] In addition, since the simulated blood vessel 30 is placed between the second member 20 made of hard resin and the simulated skin 40, when the injection needle is inserted through the simulated skin 40, the simulated blood vessel 30 moves in such a way that it moves away from the injection needle somewhat, thereby increasing the degree of simulation at the time of puncture.

[0041] Furthermore, the first member 10 mimics the shape of a dog's hind leg, and has a structure in which the second member 20, simulated blood vessel 30, and simulated skin 40 are layered on its side, creating the sensation of holding a dog's hind leg in your hand when inserting the injection needle, thereby increasing the degree of simulta- tion when the needle is inserted.

[0042] In addition, when the simulated blood vessel 30 is punctured with the injection needle, liquid flows from the simulated blood vessel 30 and the liquid injection section 50 through the injection needle into the tip of the syringe 5. In other words, it is possible to simulate the state in which blood flows from the blood vessel into the tip of the injection needle when the injection needle is punctured into an actual blood vessel, thereby increasing the degree of simulation of puncture training.

[0043] Furthermore, the simulated blood vessel 30 is formed of a tube made of a thermoplastic elastomer material whose elasticity and hardness are similar to those of a real blood vessel. Therefore, when inserting the injection needle into the simulated blood vessel 30, the sensation felt when the needle tip penetrates the blood vessel is similar to that felt when inserting the injection needle into a real blood vessel, thereby improving the degree of simulation of the injection needle insertion training.

[0044] In addition, since the simulated blood vessel 30 is made of a thermoplastic elastomer resin, even if the simulated blood vessel 30 is punctured with a hypodermic needle, the hole is closed when the hypodermic needle is removed, and the simulated blood vessel 30 and the simulated skin 40 are separate from the first member 10 and the second member 20, and can be easily replaced even if the simulated blood vessel 30 is punctured with a hypodermic needle. Therefore, the hypodermic needle puncture training model 1 as a whole does not need to be disposed of, making it an economical training model.

[0045] [Second embodiment] Next, the model 2 for injection needle puncture training in the second embodiment will be described with reference to Fig. 4. Fig. 4 is an external view showing a schematic configuration of the model 2 for injection needle puncture training in the second embodiment. Note that the model 2 for injection needle puncture in the second embodiment has a similar configuration to the model 1 for injection needle puncture in the first embodiment, so the same components are denoted by the same reference numerals and their description will be omitted.

[0046] As shown in FIG. 4, the injection needle puncture training model 2 includes a simulated tibia-fibula portion 60 between the second member 20 and the simulated blood vessel 30. The simulated tibia-fibula portion 60 is a columnar member made of a material that is equal to or harder than the second member 20, and specifically, is a columnar member made of plastic, wood, or the like.

[0047] Next, a method of using the injection needle puncture training model 2 in the second embodiment will be described with reference to Fig. 5. Fig. 5 is a diagram showing a method of using the injection needle puncture training model 2 in the second embodiment. Note that in the second embodiment, as in the first embodiment, a case in which an injection needle is inserted into the left hind leg of a dog in a recumbent position will be described.

[0048] Depending on the individual dog, the tibia and fibula of the hind leg may protrude toward the blood collector. In such cases, it becomes more difficult to collect blood than in the case of a normal dog. Therefore, in the second embodiment, such a case is assumed and training for puncturing with the injection needle can be performed.

[0049] During the training in injection of a syringe needle in the second embodiment, the injection needle injection training model 2 is used as shown in the following (a) to (c).

[0050] (a) As shown in FIG. 5(a), a columnar simulated tibiofibular portion 60 is positioned on the surface of the first member 10 and the second member 20 adhered thereto so that its central axis extends from the Achilles tendon 11 to the knee joint 21, and is fixed in place with cellophane tape or the like.

[0051] (a) Next, as shown in FIG. 5(a), the tubular simulated blood vessel 30 is positioned so that its central axis is approximately perpendicular to the central axis of the simulated tibiofibular portion 60, and is fixed in place with cellophane tape or the like. (c) Unlike the puncture training in the first embodiment, the simulated blood vessel 30 is not covered with the simulated skin 40, and the puncture training is performed by puncturing the blood vessel with an injection needle.

[0052] In such a model 2 for injection needle puncture training, a simulated tibiofibular section 60 made of a material equivalent to or harder than the second member 20 is placed between the second member 20 and the skin, thereby increasing the degree of simulation according to the individual differences of the animal being trained to puncture with the injection needle.

[0053] [Other embodiments] (1) In the above embodiment, dogs were used as the target animals for the puncture training, but animals other than dogs, such as pets or livestock, may be targeted, and the dimensions and materials may be changed depending on the size and shape of the legs of those animals.

[0054] (2) In the above embodiment, the left hind leg of a dog in a recumbent position is described as the subject of the puncture training, but similar puncture training is also possible for the right hind leg or the left and right front legs of a dog in an upright position.

[0055] (3) In the above embodiment, the left hind leg of a lying dog was described as the subject of puncture training, and therefore the second member 20 was positioned on only one side of the first member 10. However, by positioning the second member 20 on both sides of the first member 10, it becomes possible to perform puncture training for both the left and right hind legs.

[0056] (4) In the above embodiment, thermoplastic elastomer is used as the material of the simulated blood vessel 30. However, the material and thickness of the tube may be changed depending on the characteristics of the blood vessel of the animal that is the subject of the puncture training.

[0057] (5) In the above embodiment, the simulated blood vessel 30 and the liquid injection section 50 were filled with water, but the degree of simulation may be improved by filling them with a liquid colored with a dye that is the same color as the blood of the animal to be simulated, such as red.

[0058] (6) In the above second embodiment, during puncture training, the simulated blood vessel 30 and the simulated tibiofibular portion 60 were not covered with the simulated skin 30, but puncture training may be performed with the simulated blood vessel 30 and the simulated tibiofibular portion 60 covered with the simulated skin 30.

[0059] (7) In the above embodiment, the second member 20 is made of the same sponge material as the first member 10, and a thin plate made of ABS resin or polycarbonate resin is attached to one side of the sponge material with adhesive. However, the second member 20 may be made of a sponge material having the same hardness.

[0060] (8) In the second embodiment, the simulated tibia-fibula portion 60 is made of plastic or wood that is harder than the second member 20. However, the simulated tibia-fibula portion 60 may be made of sponge material, ABS resin, or polycarbonate that has the same hardness as the second member 20. [Explanation of symbols]

[0061] 1... Model for injection needle puncture training 5... Syringe 10... First part 11... Achilles tendon 12... Heel 20... Second part 21... Knee joint 22... Ankle joint 30... Simulated blood vessel 40... Simulated skin 50... Liquid injection part 51... Nozzle tip 52... Syringe 53... Plunger 60... Simulated tibia and fibula part.

Claims

1. A first member made of resin and having a shape resembling a portion of an animal's leg that is to be punctured with an injection needle; A second member made of a resin having a hardness equal to or greater than that of the first member and disposed on at least a portion of the first member; a resin simulated blood vessel disposed across the first member and the second member; a resin-made artificial skin that covers at least a part of the first member, the second member, and the simulated blood vessel and is arranged to cover all of the first member, the second member, and the simulated blood vessel; A model for needle insertion training equipped with

2. 2. The injection needle puncture training model according to claim 1, A model for training on injection needle puncture, comprising a liquid injection section for injecting liquid into the simulated blood vessel.

3. 2. The injection needle puncture training model according to claim 1, A model for injection needle puncture training comprising a cylindrical simulated tibial-fibular portion made of a material equivalent to or harder than the second member, the simulated blood vessel being placed between the second member and the simulated skin and overlapping the first member and the second member.

4. 2. The injection needle puncture training model according to claim 1, This model is used for training in injection needle puncture, and the resin of the simulated blood vessel is a thermoplastic elastomer.

5. The model for injection needle puncture training according to any one of claims 1 to 4, The animal's leg is a dog's leg.

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