Training model

Abstract

To simplify maintenance work after training.SOLUTION: A training model 1 comprises: a pseudo-tubular tissue part 10 that is composed of a tubular body having a lumen 11, and simulates a tubular tissue in a living body such as a blood vessel; and a pseudo-lesion part 70 that is arranged in the lumen 11 of the pseudo-tubular tissue part 10, and simulates a stenosed lesion part or an obstructed lesion part that is generated in the tubular tissue. The pseudo-lesion part 70 is configured to be able to restore to a shape before passage when passage training is performed on the pseudo-lesion part 70 using a medical elongated body 100 in order to ensure a flow path in the pseudo-tubular tissue part 10.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a training model for a medical elongated object to be inserted into a biological lumen. [Background technology]

[0002] Conventionally, interventions have been performed in which a medical elongated object such as a catheter or a guidewire is inserted into a living lumen (blood vessel, etc.) through the skin and travels through the lumen to a target location to perform a prescribed treatment. Since interventions are performed by passing through complexly curved blood vessels, doctors are required to have the technique to deliver a catheter or the like to a target location. Therefore, doctors use training models equipped with blood vessel models that mimic blood vessels in order to improve their skills in procedures using medical elongated objects.

[0003] Patent Document 1 discloses an example of a training model. The training biological model of Patent Document 1 is composed of a tubular body having a lumen, and includes a pseudo-tubular tissue simulating a tubular tissue, and a pseudo-lesion member disposed in the lumen of the pseudo-tubular tissue, having a shape that narrows or blocks the lumen, and simulating a lesion that has occurred in the tubular tissue. The pseudo-tubular tissue and the pseudo-lesion member are each composed of a material that can be plastically deformed, and when expansion training is performed on the pseudo-lesion member to ensure a flow path in the pseudo-tubular tissue, the expansion causes plastic deformation to an extent that the pseudo-lesion member does not return to its pre-expansion shape. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2011-27794 A Summary of the Invention [Problem to be solved by the invention]

[0005] In the invention of Patent Document 1, the medical elongated body is manipulated during training to pass a pseudo-lesion member through it, and the pseudo-lesion member after passing through is made of a plastically deformable material so that it does not return to its shape before expansion. Therefore, a through hole may be formed in the pseudo-lesion member after training that corresponds to the outer diameter of the medical elongated body through which it has passed. Therefore, the above-mentioned training biological model requires maintenance work such as replacing the used pseudo-lesion member with a new one or repairing the formed hole before the next training, which is troublesome.

[0006] At least one embodiment of the present invention has been made in consideration of the above circumstances, and specifically, an object of the present invention is to provide a training model that can simplify maintenance work. [Means for solving the problem]

[0007] The above object of the present invention can be achieved by any one of the following (1) to (5).

[0008] (1) A training model comprising: a pseudo-tubular tissue portion composed of a tubular body having an inner lumen and simulating tubular tissue in a living body; and a pseudo-lesion portion disposed in the inner lumen of the pseudo-tubular tissue portion and simulating a stenosed or obstructed lesion portion that occurs in the tubular tissue, wherein the pseudo-lesion portion is configured to be able to restore to its shape prior to passage when passage training is performed on the pseudo-lesion portion using a medical elongated body to ensure a flow path in the pseudo-tubular tissue portion.

[0009] (2) The training model described in (1) above, wherein the pseudo-lesion area is composed of a first pseudo-lesion area formed of a porous material capable of restoring to the shape it had before the medical elongated body passed through, and a second pseudo-lesion area formed of a material containing at least one of plastically deformable silicone clay, rubber clay, resin clay, and oil clay.

[0010] (3) The training model described in (1) or (2) above, wherein the maximum inner diameter of the pseudo-tubular tissue portion is 6 mm or more and 20 mm or less.

[0011] (4) The training model described in (2) above, wherein the porous material has a plurality of holes, and the pore diameter of the holes before the medical elongated body passes through is 0.1 mm or more and 2.0 mm or less.

[0012] (5) The training model according to any one of (1) to (4) above, wherein the simulated tubular tissue portion is a simulation of a vein of a lower limb. Effect of the Invention

[0013] According to the training model of the present invention, the pseudo-lesion area that has been deformed by the formation of a through hole or the like after training in the medical elongate body can be restored to its shape before training, making it unnecessary to replace the pseudo-lesion area, and simplifying the maintenance work required before and after training. [Brief description of the drawings]

[0014] [Figure 1] FIG. 2 is a diagram showing a configuration of a training model according to the present embodiment. [Diagram 2] FIG. 2 is a side view of the training model according to the embodiment. [Diagram 3] FIG. 13 is a schematic cross-sectional view showing a state in which a pseudo-lesion portion is placed in a pseudo-tubular tissue portion. [Figure 4] This is an enlarged photograph of the first pseudo-lesion area. [Figure 5A] FIG. 13 shows a modified example of a pseudo-lesion area. [Figure 5B] FIG. 13 shows a modified example of a pseudo-lesion area. [Figure 5C] FIG. 13 shows a modified example of a pseudo-lesion area. [Figure 6] 13 is a diagram showing a state in which a pseudo-tubular tissue portion is deformed by a deformation member. FIG. [Figure 7A] FIG. 1 illustrates an example of the use of a training model. [Figure 7B] FIG. 1 illustrates an example of the use of a training model. [Figure 7C] FIG. 1 illustrates an example of the use of a training model. [Figure 7D]FIG. 1 illustrates an example of the use of a training model. [Figure 7E] FIG. 1 illustrates an example of the use of a training model.

[0015] Hereinafter, the embodiments for carrying out the present invention will be described in detail with reference to the drawings. The embodiments shown here are merely illustrative in order to embody the technical idea of ​​the present invention, and do not limit the present invention. Furthermore, all other embodiments, examples, and operational techniques that can be conceived by those skilled in the art without departing from the gist of the present invention are included in the scope and gist of the present invention, and are included in the scope of the inventions described in the claims and their equivalents.

[0016] Furthermore, for the convenience of illustration and ease of understanding, the drawings attached to this specification may be represented diagrammatically with appropriate conversions from the actual objects in terms of scale, aspect ratio, shape, etc., but these are merely examples and are not intended to limit the interpretation of the present invention.

[0017] In the following description, when ordinal numbers such as "first" and "second" are used, unless otherwise specified, they are used for convenience and do not dictate any order.

[0018] The configuration of the training model 1 according to this embodiment will be described.

[0019] The training model 1 includes a simulated tubular tissue portion 10, a container 20, a fixing plate 30, a fixing tool 40, a light projecting portion 50, a marker portion 60, a simulated lesion portion 70, and a deformable member 80. The training model 1 is used when training a procedure using a medical elongated body 100 on a tubular tissue (such as a blood vessel) in a living body that is simulated by the simulated tubular tissue portion 10.

[0020] The medical elongated body 100 used in the training model 1 is an instrument that is inserted into a biological lumen such as a blood vessel to perform treatment or a prescribed procedure, and examples of such instruments include various catheters and guidewires. Training using the training model 1 can include training in passing guidewires and various catheters through organized thrombi formed in the veins of the lower limbs.

[0021] <Pseudo-tubular tissue part> As shown in Fig. 1, the pseudo tubular tissue portion 10 simulates tubular tissue in a living body. The pseudo tubular tissue portion 10 can be configured as a blood vessel model that simulates a specific blood vessel shape. The portion of the pseudo tubular tissue portion 10 that corresponds to the blood vessel has an inner cavity 11 formed therein through which liquids such as water in the container 20 and the medical elongated body 100 can pass. The pseudo tubular tissue portion 10 is formed of a tubular tube made of a flexible material such as a cross-linked silicone resin.

[0022] The blood vessels simulated by the simulated tubular tissue portion 10 are lower limb veins, simulating the common iliac vein V1, the femoral vein V2, and the popliteal vein V3. However, since the simulated tubular tissue portion 10 only needs to simulate at least the lower limb veins, it may also simulate blood vessels other than the above-mentioned veins or tubular tissues in a living body other than blood vessels.

[0023] The pseudo tubular tissue portion 10 has a maximum inner diameter of 6 mm to 20 mm in order to simulate the veins of the right lower limb, a portion simulating the common iliac vein V1 has a maximum inner diameter of 10 mm to 20 mm, a portion simulating the femoral vein V2 has a maximum inner diameter of 8 mm to 12 mm, and a portion simulating the popliteal vein V3 has a maximum inner diameter of 6 mm to 10 mm. The entire length of each blood vessel V1 to V3 of the pseudo tubular tissue portion 10 can be about 100 mm to 200 mm, so the entire length is about 300 to 600 mm. The inner diameter size and the entire length of the pseudo tubular tissue portion 10 can be appropriately changed according to the properties of the blood vessels to be simulated (individual differences such as age, sex, and medical condition). For example, the left and right sides may be reversed to simulate the veins of the left lower limb.

[0024] The inner surface of the lumen 11 is coated with a low-friction material. The low-friction material may be any material capable of reducing the friction coefficient so as to provide a slipperiness similar to that of an actual blood vessel. The low-friction material may be a hydrophilic material, a hydrophobic material, or the like. Examples of the hydrophilic material include acrylamide-based polymeric substances (e.g., polyacrylamide, block copolymers of polyglycidyl methacrylate-dimethylacrylamide (PGMA-DMAA)), cellulose-based polymeric substances, polyethylene oxide-based polymeric substances, maleic anhydride-based polymeric substances (e.g., maleic anhydride copolymers such as methyl vinyl ether-maleic anhydride copolymers), water-soluble nylon, polyvinyl alcohol, polyvinylpyrrolidone, and the like. Examples of the hydrophobic material include reactive curing silicone, polytetrafluoroethylene (PTFE), and fluorinated ethylene propylene (FEP), and the like. The low-friction material may also be a material that has a friction reducing effect other than hydrophilic or hydrophobic materials.

[0025] Since the simulated tubular tissue portion 10 has a low-friction material coated on the inner cavity 11, preparations such as adjusting the lubricity of the inner cavity 11 with a surfactant or the like are not required, allowing for easy training. Furthermore, if the simulated tubular tissue portion 10 is formed by specifying the type of blood vessel to be simulated, the model size can be made compact, making it easy to transport, install, and prepare.

[0026] In this embodiment, the inner cavity 11 of the pseudo-tubular tissue portion 10 is configured to be coated with a low-friction material, but the material forming the pseudo-tubular tissue portion 10 may contain a low-friction material so that the inner surface of the inner cavity 11 exhibits a friction reduction effect.

[0027] In this embodiment, the simulated tubular tissue portion 10 is formed from a single tubular member. However, the simulated tubular tissue portion 10 can be configured by combining irregular tubes shaped to match the inner diameter of the blood vessel to be simulated. For example, when simulating three types of blood vessels, the combination of irregular tubes may be such that three types of irregular tubes simulating each blood vessel are combined, or one of the irregular tubes may be used as an irregular tube and the other blood vessels may be used as an integrated tube.

[0028] <Container> The container 20 is a device for storing liquid such as water and immersing and placing the simulated tubular tissue portion 10 therein. The container 20 may be a water tank made of a light-transmitting material (such as acrylic resin). A fixing plate 30 is disposed on the upper or lower surface of the bottom 21 of the container 20. The bottom 21 of the container 20 may also function as the fixing plate 30.

[0029] <Fixed plate> The fixing plate 30 is an instrument to which the pseudo-tubular tissue portion 10 is fixed by the fixing device 40. The fixing plate 30 can be made of a flat transparent sheet having translucency that allows the light of the light projecting portion 50 to pass therethrough.

[0030] When the fixing plate 30 is disposed on the upper surface of the bottom 21 of the container 20, the fixing device 40 is directly fixed to the fixing plate 30. When the fixing plate 30 is disposed on the lower surface of the bottom 21 of the container 20, the fixing device 40 is fixed to the bottom 21 of the container 20. In other words, the bottom 21 of the container 20 fulfills the function of the fixing plate 30.

[0031] <Fixing fixture> The fixing device 40 is an instrument that is placed in the pseudo-tubular tissue section 10 to maintain the blood vessel shape and installation state of the pseudo-tubular tissue section 10. The fixing device 40 is placed mainly in a portion of the pseudo-tubular tissue section 10 that has a curved shape. However, the fixing device 40 can also be placed in a pseudo-tubular tissue section 10 that does not have a curved shape in order to maintain the blood vessel shape and the like when the pseudo-tubular tissue section 10 is fixed to the fixed surface (the surface of the fixing plate 30 or the bottom section 21).

[0032] The fixture 40 has a configuration that allows it to be easily detached from a fixed surface such as the fixed plate 30 or the bottom 21. From the viewpoint of ease of attachment and detachment, a suction cup made of flexible rubber or plastic can be suitably used as the fixture 40. Note that the fixture 40 is not limited to a suction cup, and is not particularly limited as long as it has a configuration that allows it to be attached and detached to any position on the surface of the fixed plate 30 or the bottom 21.

[0033] The position of the fixture 40 relative to the simulated tubular tissue portion 10 can be appropriately set based on the type of blood vessels simulated by the simulated tubular tissue portion 10, the level of difficulty of the training, etc. When determining the position of the fixture 40, by concentrating the fixture 40 on a portion that requires particularly fine adjustment of the amount of curvature, the simulated tubular tissue portion 10 can be easily deformed into a desired curved shape and can be adjusted to an appropriate amount of curvature.

[0034] <Light projecting section> The light projecting unit 50 is composed of a lighting fixture or the like for projecting (projecting) light from the underside of the fixed plate 30. Since the container 20 and the fixed plate 30 are translucent, the light projected from the light projecting unit 50 passes through the fixed plate 30 and the bottom 21 and is projected onto the entire inside of the container 20, as shown in FIG.

[0035] In the training model 1, training is performed with the pseudo-tubular tissue portion 10 immersed in a container 20 that stores liquid, but external light (from indoor lighting, etc.), particularly illumination light from the ceiling, is reflected on the surface of the liquid, making it difficult to observe the movement of the medical elongated body 100 in the pseudo-tubular tissue portion 10 in the liquid. However, as shown in Fig. 2, the light projecting unit 50 is disposed on the bottom side of the container 20 and irradiates light from the bottom 21 side of the container 20 toward the opening on the top side, thereby making it easier to observe the pseudo-tubular tissue portion 10 and the medical elongated body 100 by suppressing deterioration of visibility due to external light.

[0036] <Marker section> The marker portion 60 is used when adjusting the amount of curvature of the pseudo-tubular tissue portion 10. The marker portion 60 can be formed on the fixing plate 30. Since the bottom 21 of the container 20 is translucent, even if the fixing plate 30 is disposed on the lower surface side of the bottom 21, the marker portion 60 formed on the fixing plate 30 can be viewed from above.

[0037] As described above, the bottom 21 of the container 20 can also be used as the fixing plate 30, and in such a usage form, the marker portion 60 may be formed on the inner or outer surface of the bottom 21 of the container 20.

[0038] As shown in FIG. 1, the marker portion 60 has a marker group 62 combining a plurality of markers 61 in order to adjust the amount of curvature of the pseudo-tubular tissue portion 10 according to the difficulty of the procedure and the skill of a trainee such as a doctor.

[0039] 1, markers 61 constituting marker group 62 have a shape that matches the outer shape of fixture 40. In this embodiment, fixture 40 is a circular suction cup, and therefore marker 61 has an annular shape that matches the outer shape of the suction cup.

[0040] The marker group 62 is configured to be able to adjust the amount of curvature of the pseudo tubular tissue portion 10 according to the difficulty of the procedure and the skill of the trainee by arbitrarily combining a plurality of markers 61. As shown in Fig. 1, the marker group 62 can be combined by partially overlapping a plurality of markers 61 so that the difficulty of the training can be adjusted.

[0041] The overlapping positions of the markers 61 in the marker group 62 can be set arbitrarily, and can be appropriately set according to the type of blood vessels simulated by the simulated tubular tissue portion 10, the number of levels of difficulty, etc. The number of markers 61 forming the marker group 62 can be set arbitrarily according to the type of blood vessels simulated by the simulated tubular tissue portion 10, the number of levels of difficulty, etc. The difficulty level of the marker group 62 can be made identifiable by, for example, changing the color (including adjustment of hue, saturation, and brightness), line type (solid line, dotted line, etc.), line width, etc. of the marker 61.

[0042] 1, the marker section 60 is divided into three difficulty levels (1 to 3), with a first marker 61a represented by a solid line arranged at a position corresponding to a low level of difficulty "1," a second marker 61b represented by a dotted line arranged at a position corresponding to a medium level of difficulty "2," and a third marker 61c represented by a dashed dotted line arranged at a position corresponding to a high level of difficulty "3." The difficulty level can be set so that the lower the level, the less the amount of bending of the pseudo-tubular tissue section 10 becomes gentler, and the higher the level, the more the amount of bending of the pseudo-tubular tissue section 10 becomes steeper.

[0043] <Pseudo-lesion area> The pseudo-lesion portion 70 simulates a stenosis such as an organized thrombus formed in a vein of a lower limb. The pseudo-lesion portion 70 can be placed at any position within the pseudo-tubular tissue portion 10 depending on the type of training or the case to be simulated.

[0044] The pseudo-lesion area 70 is formed of a restorable material. The "restoration" of the pseudo-lesion area 70 means that the shape returns from the post-training state in which a through hole is formed by the passage of the medical elongated body 100, etc., to the pre-training state, i.e., a state in which there is no through hole or a state in which the through hole is barely visible. Therefore, the pseudo-lesion area 70 can be restored by utilizing the shape restoring property of the material or by applying an external stimulus such as pinching it with the trainee's fingers.

[0045] As shown in Fig. 3, pseudo-lesion 70 includes a first pseudo-lesion 71 made of a porous material and a second pseudo-lesion 72 made of a plastically deformable material. First pseudo-lesion 71 and second pseudo-lesion 72 differ in hardness, cross-sectional shape, and density in order to represent the properties of organized thrombus formed in the veins of the lower limbs (mild stenosis lesion, severe occlusion lesion, etc.). In this embodiment, first pseudo-lesion 71 is disposed adjacent to second pseudo-lesion 72 on the peripheral side (upstream in the vein) as shown in Fig. 3.

[0046] First pseudo-lesion area 71 simulates a mild stenosis lesion. First pseudo-lesion area 71 is made of a shape-restoring porous material such as urethane resin. Because first pseudo-lesion area 71 is made of a porous material, first pseudo-lesion area 71 can quickly restore its shape after medical elongated body 100 is removed due to the shape-restoring property of the material itself.

[0047] The porous material constituting first pseudo-lesion area 71 has numerous holes 71a, as shown in Fig. 4. The dotted line area shown in Fig. 4 indicates the opening of one of the holes 71a. Since the porous material has shape restoring properties while simulating a mild stenosis lesion, the hole diameter of hole 71a is set to 0.1 mm or more and 2.0 mm.

[0048] First pseudo-lesion 71 is in a form in which no through-hole is formed, but a through-hole large enough to allow a small-diameter device such as a guide wire to pass through may be formed. First pseudo-lesion 71 has shape restoring properties, and therefore can restore to its shape after training even if a through-hole is formed.

[0049] Second pseudo-lesion area 72 simulates a severe occlusion lesion. Second pseudo-lesion area 72 is made of a plastically deformable material containing at least one of silicone clay, rubber clay, resin clay, and oil clay. The material for second pseudo-lesion area 72 may be, for example, one disclosed in JP 2011-27794 A.

[0050] Since second pseudo-lesion area 72 is made of a plastically deformable material, the material itself does not have the ability to restore its shape. However, when the trainee pinches second pseudo-lesion area 72 with his or her fingers and an external stimulus is applied, second pseudo-lesion area 72 can restore its shape after training.

[0051] The outer diameter of the simulated lesion portion 70 can be appropriately set according to the inner diameter of the simulated tubular tissue portion 10 that simulates a blood vessel in which an organized thrombus can form.

[0052] In addition to the arrangement shown in Fig. 3, pseudo-lesion 70 may be in the form of modified examples shown in Fig. 5A to Fig. 5C. Fig. 5A shows a form in which the positions of first pseudo-lesion 71 and second pseudo-lesion 72 are interchanged, Fig. 5B shows a form in which pseudo-lesion 70 consists only of first pseudo-lesion 71, and Fig. 5C shows a form in which pseudo-lesion 70 consists only of first pseudo-lesion 71 and has through-hole 73. Each of the forms shown in Fig. 5A to Fig. 5C can be appropriately adopted according to the properties of the organized thrombus to be simulated.

[0053] The training model 1 can include a deformation member 80 that causes a three-dimensional deformation of the simulated tubular tissue portion 10 .

[0054] <Deformable parts> The deformation member 80 three-dimensionally deforms the pseudo-tubular tissue portion 10. The deformation member 80 can be formed of a rod-shaped member having a circular cross section, or the like. The deformation member 80 is disposed between the pseudo-tubular tissue portion 10 and the bottom surface of the container 20, as shown in FIG. 6. This allows the pseudo-tubular tissue portion 10 to deform into a curved state so as to be convex upward with respect to the container 20 (the direction from the bottom surface of the container 20 toward the opening side), as shown in FIG. 6.

[0055] The pseudo-tubular tissue portion 10 can be deformed three-dimensionally using the deformation member 80, but the pseudo-tubular tissue portion 10 can also be deformed three-dimensionally, for example, by bringing adjacent fixing devices 40 closer together in the direction in which the blood vessel runs.

[0056] 7A to 7E, a method of using the training model 1 will be described below. The following description concerns training for passing the medical elongated body 100 through an organized thrombus formed in a vein of a lower limb.

[0057] As shown in FIG. 7A, a trainee such as a doctor inserts a guidewire as an elongated medical body 100 from the peripheral side (popliteal vein V3 side) of the simulated tubular tissue portion 10 to the vicinity of the simulated lesion portion 70.

[0058] Next, the trainee passes the simulated lesion 70 as shown in Fig. 7B. Next, the trainee aims to insert the catheter into the simulated tubular tissue portion 10 along the guidewire and pass the simulated lesion 70 as shown in Fig. 7C, but it is difficult to penetrate the simulated lesion 70 with only the guidewire, and this takes a long time.

[0059] Then, as shown in Figure 7C, the trainee penetrates first pseudo-lesion 71 and second pseudo-lesion 72 with the guidewire support catheter and parent catheter assembly with the guidewire inserted therethrough. Thereafter, as shown in Figure 7D, the guidewire, guidewire support catheter and parent catheter assembly are removed from simulated tubular tissue 10. At this time, a through hole is formed in second pseudo-lesion 72 due to the passage of the catheter.

[0060] When the passing training is completed, first pseudo-lesion area 71 of pseudo-lesion area 70 is restored to the shape it had before training, as shown in Fig. 7E. As shown in Fig. 7E, first pseudo-lesion area 71 is restored to its original shape due to its own shape restoring ability, but second pseudo-lesion area 72 remains in a plastically deformed state. Second pseudo-lesion area 72 is restored to its original shape by a trainee or the like pinching second pseudo-lesion area 72 together with pseudo tubular tissue area 10 with his / her fingers and applying an external stimulus thereto, as shown in Fig. 7E.

[0061] As described above, the training model 1 of this embodiment is composed of a tubular body having an inner lumen 11 and includes a pseudo-tubular tissue portion 10 that simulates tubular tissue in a living body, such as a blood vessel, and a pseudo-lesion portion 70 that is disposed in the inner lumen 11 of the pseudo-tubular tissue portion 10 and simulates a stenosed or obstructed lesion that occurs in the tubular tissue, and the pseudo-lesion portion 70 is configured to be able to restore to its shape before passage when passage training is performed on the pseudo-lesion portion 70 using the medical elongated body 100 to ensure a flow path in the pseudo-tubular tissue portion 10.

[0062] With this configuration, when training is performed on passing the elongated medical body 100 through an organized thrombus in a blood vessel, a through hole is formed in the pseudo-lesion area 70 after the passage of the elongated medical body 100, but the pseudo-lesion area 70 is configured to be restorable so that it will return to its shape before training. Therefore, trainees and the like do not need to replace the pseudo-lesion area 70 for the next training session, and the maintenance work required before and after training can be simplified. The inside and outside diameters of the entire length may be tapered, or tubes of different inside and outside diameters may be connected in multiple stages. Alternatively, the iliac vein portion may be V-shaped. [Explanation of symbols]

[0063] 1 training model, 10 Pseudo-tubular tissue part, 11 lumen, 20 containers, 21 bottom, 30 Fixed plate, 40 Fixtures; 50 Light projecting unit, 60 marker section, 61 Markers (61a low difficulty marker, 61b medium difficulty marker, 61c high difficulty marker), 62 markers, 70 suspected lesions, 71 first pseudo-lesion area (71a hole area), 72 Second suspected lesion, 73 through holes, 80 Deformable member, 100 Medical long body, V1 common iliac vein; V2 femoral vein, V3 Popliteal vein.

Claims

1. A pseudo-tubular tissue portion that is composed of a tubular body having a lumen and that simulates a tubular tissue in a living body; a pseudo-lesion portion disposed in the lumen of the pseudo-tubular tissue portion and simulating a stenosis or occlusion lesion occurring in the tubular tissue; The pseudo-lesion area is a training model configured to be able to restore to its shape before passing when passing training is performed on the pseudo-lesion area using a medical elongated body to ensure a flow path in the pseudo-tubular tissue area.

2. The pseudo-lesion area is a first pseudo-lesion portion formed of a porous material capable of restoring the shape of the first pseudo-lesion portion to the shape before the first pseudo-lesion portion passes through the medical elongated object; The training model according to claim 1 , further comprising: a second pseudo-lesion portion formed of a material containing at least one of plastically deformable silicone clay, rubber clay, resin clay, and oil clay.

3. The training model according to claim 1 , wherein the maximum inner diameter of the pseudo tubular tissue portion is 6 mm or more and 20 mm or less.

4. the porous material has a plurality of pores; The training model according to claim 2 , wherein a diameter of the hole portion before the medical elongated object passes through is 0.1 mm or more and 2.0 mm or less.

5. The training model according to claim 1 , wherein the simulated tubular tissue portion is a simulation of a vein of a lower limb.

Images