Biomimulated artificial blood vessel-based blood vessel suture training materials

Abstract

The present invention relates to an artificial blood vessel suturing practice kit for education and practice that enables the movement and control of fluids similar to human blood vessels. Specifically, the kit comprises: a storage container for storing artificial blood or water; a fluid conduit through which the artificial blood or water supplied from the storage container flows; a first fitting valve provided on the fluid conduit to control the flow of artificial blood or water; an artificial blood vessel with one end connected to the first fitting valve to receive artificial blood or water; and a second fitting valve connected to the other end of the artificial blood vessel to control the flow of artificial blood or water. This configuration can assist in the future improvement of medical personnel's skills and allows for repetitive practice simply by replacing the artificial blood vessel, thereby enhancing proficiency.

Description

Technology Field

[0001] The present invention relates to an artificial blood vessel suturing practice kit, and more specifically, to an artificial blood vessel suturing practice kit for education and practice that enables the movement and control of fluids similar to human blood vessels, which helps to become proficient in actual blood vessel surgery by training to suture blood vessels and artificial blood vessels used to replace blood vessels in situations similar to reality. Background Technology

[0002] Vascular surgery is an essential part of surgical procedures across all surgical disciplines, and because it is a critical factor in the surgical outcome, sufficient training is required.

[0003] Furthermore, since cardiovascular disease accounts for one of the largest proportions of disease-related mortality worldwide, it is essential to train medical professionals skilled in vascular surgery.

[0004] However, because blood vessels are a very important yet highly sensitive area, there are limited opportunities to hone skills by directly operating on patients' blood vessels during training; therefore, a model is needed to receive appropriate surgical training.

[0005] The vascular surgery models currently in use feature pipe-shaped artificial blood vessels with a texture similar to real blood vessels, designed to allow for suturing practice using needles, forceps, and thread; however, due to their poor quality and lack of a realistic feel, they are not very helpful for practicing vascular surgery. Prior art literature

[0006] Registered Patent 10-1871097

[0007] https: / / m.11st.co.kr / products / ma / 3592692766?inpu=&trTypeCd=22&trCtgrNo=895019 The problem to be solved

[0008] The present invention was devised to solve the problems of the aforementioned prior art, and aims to provide an artificial blood vessel suturing practice kit for education and practice that enables the movement and control of fluids similar to human blood vessels, allowing suturing surgery to be performed on an artificial blood vessel manufactured by simulating the diameter, thickness, elasticity, etc., of actual blood vessels under conditions similar to an actual surgical environment. means of solving the problem

[0009] An artificial blood vessel suturing practice kit for education and practice, capable of moving and controlling a fluid similar to human blood vessels according to the present invention for solving the above-mentioned problem, comprises: a storage container for storing artificial blood or water; a fluid conduit through which the artificial blood or water supplied from the storage container flows; a first fitting valve provided on the fluid conduit to control the flow of artificial blood or water; an artificial blood vessel, one end of which is connected to the first fitting valve to receive artificial blood or water, and which is sutured using a needle and suture thread when a torn area occurs; and a second fitting valve connected to the other end of the artificial blood vessel to control the flow of artificial blood or water.

[0010] Here, the second fitting valve is installed to be able to move back and forth in the longitudinal direction of the artificial blood vessel.

[0011] That is, a slider that moves back and forth along the longitudinal direction of the artificial blood vessel is provided at the lower end of the second fitting valve, and a fixing block that supports the slider is provided at the lower side of the slider; wherein the slider has a protrusion formed on its side; and the fixing block has a plurality of insertion holes formed along the longitudinal direction of the artificial blood vessel into which the protrusion is inserted.

[0012] As another example, a slider that moves back and forth along the longitudinal direction of the artificial blood vessel is provided on the lower side of the second fitting valve, and a fixing block that supports the slider is provided on the lower side of the slider; wherein the slider has a recessed groove formed on its side, and a spring and an insertion ball are installed within the recessed groove to provide elastic force in the direction in which the insertion ball is pushed outward; and the fixing block has an insertion hole formed on its side along the longitudinal direction of the artificial blood vessel into which a portion of the insertion ball protruding outward from the recessed groove of the slider is inserted.

[0013] Meanwhile, the first fitting valve and the fixing block are installed on the upper surface of a table having a certain height.

[0014] In addition, the present invention comprises a tank that accommodates the table internally and receives artificial blood or water leaking from the fluid conduit and artificial blood vessel.

[0015] In addition, a mounting bracket for mounting a smartphone for video recording is installed on the table or tank mentioned above.

[0016] In addition, a pressurizer is connected to the storage tank, and artificial blood or water is discharged out of the storage tank by the pressure provided by the pressurizer and supplied to the fluid conduit.

[0017] Here, the pressurizer is composed of a dropper that applies pressure inside the storage container through a connecting tube.

[0018] In addition, a pressure gauge is installed on the fluid pipeline to measure the pressure of the artificial blood or water flowing through the fluid pipeline.

[0019] Meanwhile, the present invention further comprises a mounting bracket for mounting the storage container and the pressure gauge.

[0020] Here, the mounting bracket comprises: a storage container mounting portion for housing the storage container; a pressure gauge mounting portion provided on the front of the storage container mounting portion for mounting the pressure gauge; and a support leg extending horizontally from the bottom of the storage container mounting portion.

[0021] In addition, a rigid connecting member is connected between the first fitting valve and the artificial blood vessel and between the second fitting valve and the artificial blood vessel.

[0022] Here, the above-mentioned connecting member is composed of a fitting connection part connected to the first fitting valve and the second fitting valve side, and a blood vessel connection part formed integrally with the fitting connection part and connected to the artificial blood vessel side, wherein the blood vessel connection part is formed such that its diameter decreases toward the artificial blood vessel, and a plurality of ring-shaped wedges are formed protruding from the outer surface. Effects of the invention

[0023] The artificial blood vessel suturing practice kit of the present invention, configured as described above and capable of moving and controlling a fluid similar to human blood vessels, can help improve the skills of medical professionals in the future by practicing with an artificial blood vessel under conditions similar to actual surgery, and has the advantage of increasing proficiency by enabling repetitive practice simply by replacing the artificial blood vessel.

[0024] In addition, there is the advantage of preventing medical accidents by practicing sufficiently before performing vascular-related procedures and surgeries on actual patients. Brief explanation of the drawing

[0025] FIGS. 1 to 4 show an artificial blood vessel suturing practice kit for education and practice that enables the movement and control of a fluid similar to human blood vessels according to the present invention. FIG. 5 is a figure showing an embodiment between a slider and a fixing block applied to an artificial blood vessel suturing practice kit for education and practice that enables the movement and control of fluid similar to human blood vessels according to the present invention. FIG. 6 is a figure showing another embodiment between a slider and a fixing block applied to an artificial blood vessel suturing practice kit for education and practice that enables the movement and control of fluid similar to human blood vessels according to the present invention. FIG. 7 is a figure showing the extension of an artificial blood vessel of an artificial blood vessel suturing practice kit for education and practice, capable of moving and controlling a fluid similar to a human blood vessel according to the present invention. FIG. 8 is a figure showing the appearance of a stand applied to an artificial blood vessel suturing practice kit for education and practice, capable of moving and controlling a fluid similar to human blood vessels according to the present invention. Specific details for implementing the invention

[0026] Hereinafter, an embodiment of an artificial blood vessel suturing practice kit for education and practice, capable of moving and controlling a fluid similar to human blood vessels according to the present invention, will be described in detail with reference to the attached drawings.

[0027] FIGS. 1 to 4 illustrate an artificial blood vessel suturing practice kit for education and practice that enables the movement and control of fluid similar to human blood vessels according to the present invention.

[0028] And, FIG. 5 is a figure showing one embodiment between a slider and a fixing block applied to an artificial blood vessel suturing practice kit for education and practice that enables the movement and control of a fluid similar to a human blood vessel according to the present invention, and FIG. 6 is a figure showing another embodiment between a slider and a fixing block applied to an artificial blood vessel suturing practice kit for education and practice that enables the movement and control of a fluid similar to a human blood vessel according to the present invention.

[0029] In addition, FIG. 7 is a figure showing the artificial blood vessel being extended in an artificial blood vessel suturing practice kit for education and practice that is capable of moving and controlling a fluid similar to a human blood vessel according to the present invention, and FIG. 8 is a figure showing the stand applied to an artificial blood vessel suturing practice kit for education and practice that is capable of moving and controlling a fluid similar to a human blood vessel according to the present invention.

[0030] The artificial blood vessel suturing practice kit for education and practice, capable of moving and controlling a fluid similar to a human blood vessel according to the present invention, is configured to allow practitioners to practice suturing an artificial blood vessel by assuming a situation where the artificial blood vessel is torn and blood is leaking, as well as various other situations. It comprises a storage container (10) for storing artificial blood or water, a fluid conduit (20) for receiving artificial blood or water from the storage container (10), a first fitting valve (30) provided on the fluid conduit (20), an artificial blood vessel (40) with one end connected to the first fitting valve (30), a second fitting valve (50) connected to the other end of the artificial blood vessel (40), a table (60) on which the first fitting valve (30) is installed, a water tank (70) that houses the table (60) inside, and a stand (80) for mounting the storage container (10).

[0031] The above storage container (10) stores artificial blood or water inside and is connected to a pressurizer (13) through a connecting tube (11) and to a fluid conduit (20) through an injection tube (12).

[0032] The above pressurizer (13) provides pressure inside the storage tank (10) to discharge artificial blood or water inside the storage tank (10) out of the storage tank (10). To elaborate, when the pressure inside the storage tank (10) increases due to the pressure provided by the pressurizer (13), the artificial blood or water stored in the storage tank (10) is discharged out of the storage tank (10) through the injection tube (12) and then supplied into the fluid conduit (20) to flow.

[0033] Here, the pressurizer (13) may be composed of a dropper that applies pressure inside the storage container (10) through a connecting tube (11), or it may be composed of a small pump. If the pressurizer is a dropper, the practitioner can discharge artificial blood or water by repeatedly pressing with their hand, and if the pressurizer is a small pump, it can automatically apply pressure to the storage container (10) to discharge artificial blood or water automatically.

[0034] The above fluid conduit (20) is constructed by combining a plurality of tubes and a plurality of fittings, and artificial blood or water provided from the storage container (10) flows through it.

[0035] This fluid conduit (20) may be composed of a main conduit (21) connected to an injection tube (12) and a branch conduit (22) branched from the end of the main conduit (21). In the teaching material of the present invention, if one artificial blood vessel (40) is adopted, the main conduit (21) alone is sufficient without the branch conduit (22), but if two or more artificial blood vessels (40) are adopted, the branch conduit (22) must be provided for each artificial blood vessel (40).

[0036] Assuming that practitioners gather around the teaching aid of the present invention to practice suturing artificial blood vessels, it is preferable to adopt two artificial blood vessels (40) and have one person from each side practice suturing one artificial blood vessel (40). Therefore, in the following description, it will be explained as having two branch pipes (22) as shown in the drawing.

[0037] Meanwhile, a pressure gauge (23) is installed on the fluid conduit (20) to measure the pressure of artificial blood or water flowing through the fluid conduit (20). More specifically, the pressure gauge (23) is installed on the main conduit (21) to measure the pressure of the fluid flowing through the main conduit (21). Thus, it is possible to check for leakage in the artificial blood vessel (40) by increasing or decreasing the pressure using the pressurizer (13).

[0038] The first fitting valve (30) controls the flow of artificial blood or water within the fluid conduit (20), and one first fitting valve (30) is installed in each branch conduit (22).

[0039] To elaborate, the first fitting valve (30) can block the branch pipe (22) to prevent artificial blood or water from flowing within the branch pipe (22), or it can open only the direction toward the artificial blood vessel (40) and block the other direction so that artificial blood or water flows only toward the artificial blood vessel (40).

[0040] The artificial blood vessel (40) is made to resemble a real blood vessel and receives artificial blood or water flowing through the fluid conduit (20) through the first fitting valve (30). This artificial blood vessel (40) is manufactured by electrospinning a polyurethane polymer and has flexibility and elasticity by layering nanofibers on its surface to create many micropores.

[0041] During suturing practice, a specific part of the artificial blood vessel (40) is cut or torn, and when a torn area occurs, the practitioner sutures the cut or torn area using a needle and suture. When suturing the cut or torn area with suture, the artificial blood or water stored in the storage container (10) flows inside the artificial blood vessel (40) and leaks out of the artificial blood vessel (40) through the parts that are not properly sutured. Through this leakage of artificial blood or water, the practitioner can clearly see visually which parts are not properly sutured, and through this, gain experience to improve the completeness of the suturing.

[0042] The second fitting valve (50) is connected to the other end of the artificial blood vessel (40) and controls the flow of artificial blood or water inside the artificial blood vessel (40). That is, depending on the operation of the second fitting valve (50), artificial blood or water may be discharged to the outside, or the state in which artificial blood or water is contained within the artificial blood vessel (40) may be maintained.

[0043] This second fitting valve (50) is installed to be able to move back and forth in the longitudinal direction of the artificial blood vessel (40), so that the length of the artificial blood vessel (40) can be extended or contracted.

[0044] To explain in more detail (see FIG. 5 and FIG. 7), a slider (51) is provided at the bottom of the second fitting valve (50), and a fixing block (52) is provided at the lower side of the slider (51) to support the slider (51) and hold the slider (51) so that it moves back and forth.

[0045] The above slider (51) is integrated with the second fitting valve (50), so that when the slider (51) moves back and forth, the second fitting valve (50) also moves back and forth together. A projection (51a) is formed on the side of this slider (51).

[0046] The above-mentioned fixed block (52) has a plurality of insertion holes (52a) formed on its side into which a projection (51a) is inserted, and these insertion holes (52a) are formed at regular intervals along the longitudinal direction of the artificial blood vessel (40).

[0047] Therefore, when the slider (51) moves a certain distance on the fixed block (52) and then stops, the projection (51a) is inserted into the insertion hole (52a) at that point, and the stopping position can be maintained.

[0048] Meanwhile, the sliding structure of the slider (51) for the fixed block (52) may also be configured as follows (see FIG. 6).

[0049] A slider (51) integrated at the bottom of the second fitting valve (50) is provided, and a fixing block (52) is provided on the lower side of the slider (51) to support the slider (51) and to hold the slider (51) so that it moves back and forth stably along the longitudinal direction of the artificial blood vessel (40).

[0050] A recessed groove (51b) is formed on the side of the slider (51), and a spring (51c) and an insert ball (51d) are inserted into the recessed groove (51b). Therefore, since the insert ball (51d) is provided with elastic force in a direction that pushes it outward by the spring (51c), a part of the spherical insert ball (51d) protrudes out of the recessed groove (51b).

[0051] The above-mentioned fixed block (52) has an insertion hole (52a) formed on its side into which a part of an insertion ball (51d) protruding out of the recessed groove (51b) is inserted, and this insertion hole (52a) is formed along the longitudinal direction of the artificial blood vessel (40).

[0052] Therefore, when the slider (51) is pushed, the insertion ball (51d) is pressed against the side of the fixed block (52) and enters the recessed groove (51b), and when it reaches the insertion hole (52a), a part of it protrudes outward due to the elastic force of the spring (51c) and is inserted into the insertion hole (52a), repeating the process.

[0053] Here, we briefly examine the connection structure of the first fitting valve (30) and the second fitting valve (50) at each end of the artificial blood vessel (40) (see FIG. 4).

[0054] Since the artificial blood vessel (40) is made of a soft material that is thin, very flexible, and easily bendable, both ends cannot be directly connected to the first fitting valve (30) and the second fitting valve (50). Therefore, a binding member (41) made of a hard material having a certain strength and hardness is connected between the first fitting valve (30) and the artificial blood vessel (40) and between the second fitting valve (50) and the artificial blood vessel (40).

[0055] The above-mentioned connecting member (41) is composed of a fitting connection part (41a) connected to the first fitting valve (30) and the second fitting valve (50), and a blood vessel connection part (41b) formed integrally with the fitting connection part (41a) and connected to the artificial blood vessel (40).

[0056] The above-mentioned blood vessel connection part (41b) may be formed to have the same diameter throughout, or may be formed so that the diameter becomes smaller as it approaches the artificial blood vessel (40). On the outer surface of this blood vessel connection part (41b), a plurality of ring-shaped wedges (41c) of the same height are formed protruding.

[0057] In terms of connecting various artificial blood vessels (40), it is desirable to manufacture the blood vessel connection part (41b) in a shape where the diameter becomes smaller as it gets closer to the artificial blood vessel (40).

[0058] That is, the artificial blood vessel (40) is manufactured to have various diameters, and if the blood vessel connection part (41b) is formed in a conical shape such that the diameter becomes smaller as it goes toward the artificial blood vessel (40), then even if the diameter of the artificial blood vessel (40) is different, artificial blood vessels (40) of various diameters can be easily connected to the blood vessel connection part (41b).

[0059] And, since a ring-shaped wedge (41c) is formed on the outer surface of the blood vessel connection part (41b), when the blood vessel connection part (41b) inserted inside the artificial blood vessel (40) is inserted, the artificial blood vessel (40) is restrained by the ring-shaped wedge (41c) and is not easily separated from the blood vessel connection part (41b).

[0060] The table (60) is in the form of a horizontal plate having a certain height, and a fixing block (52) supporting the first fitting valve (30) and the second fitting valve (50) is installed on the upper surface, and an artificial blood vessel (40) is arranged on the upper part of the table (60) at a certain distance apart.

[0061] The above-mentioned tank (70) is in the form of a box with an open top surface, and a table (60) is housed inside it, and it contains artificial blood or water leaking from the fluid conduit (20) and artificial blood vessel (40). That is, by collecting all the water used during the artificial blood vessel suturing practice in the tank (70), it helps to facilitate the cleanup after the practice.

[0062] Meanwhile, a mounting stand (90) for mounting a smartphone (P) for video recording is installed on either the table (60) or the tank (70). That is, the smartphone (P) is used to film the practice of suturing the artificial blood vessel (40) so that it can be usefully used when evaluating the practice later.

[0063] This mounting bracket (90) can easily adjust the position of the smartphone (P) by making the height of the support bar (91) sufficiently high so that the smartphone (P) can be positioned on the table (60), and by making the support bar (91) flexible to eliminate blind spots in shooting.

[0064] The above-mentioned stand (80) supports a storage container (10) and a pressure gauge (23), and is composed of a storage container support part (81) for housing the storage container (10), a pressure gauge support part (82) on which the pressure gauge (23) is seated, and a support leg (83) provided at the bottom of the storage container support part (81).

[0065] The above storage container holder (81) is placed next to the water tank (70) during suturing practice and safely maintains the position of the storage container (10) that supplies artificial blood or water required for practice.

[0066] The pressure gauge mounting portion (82) is provided protruding from the front of the storage tank mounting portion (81), and the pressure gauge (23) installed on the main pipe (21) is seated thereon.

[0067] The above support leg (83) is formed to extend horizontally from the bottom of the storage container holder (81) to prevent the holder (80) from shaking during suturing practice. Explanation of the symbols

[0068] 10: Storage container 11: Connecting tube 12: Infusion tube 13: Pressurizer 20: Fluid pipeline 21: Main pipeline 22: Branch pipe 23: Pressure gauge 30: First fitting valve 40: Artificial blood vessel 41: Fastener 41a: Fitting connection 41b: Vascular connector 41c: Ring wedge 50: Second fitting valve 51: Slider 51a: Protrusion 51b: Indentation 51c: Spring 51d: Insert ball 52: Fixing block 52a: Insertion hole 60: Table 70: Aquarium 80: Stand 81: Storage container holder 82: Pressure gauge mounting section 83: Support legs 90: Mounting bracket 91: Support bar P: Smartphone

Claims

Claim 1 An artificial blood vessel suturing practice kit for education and practice capable of moving and controlling fluid similar to human blood vessels, characterized by comprising: a storage container (10) in which artificial blood or water is stored; a fluid conduit (20) through which artificial blood or water provided from the storage container (10) flows; a first fitting valve (30) provided on the fluid conduit (20) to control the flow of artificial blood or water; an artificial blood vessel (40) having one end connected to the first fitting valve (30) to receive artificial blood or water, and which is sutured using a needle and suture when a torn area occurs; and a second fitting valve (50) connected to the other end of the artificial blood vessel (40) to control the flow of artificial blood or water. Claim 2 An artificial blood vessel suturing practice kit for education and practice capable of moving and controlling fluid similar to human blood vessels, characterized in that, in claim 1, the second fitting valve (50) is installed to be able to move back and forth in the longitudinal direction of the artificial blood vessel (40). Claim 3 An artificial blood vessel suturing practice kit for education and practice capable of moving and controlling fluid similar to human blood vessels, wherein, in claim 2, a slider (51) that moves back and forth along the longitudinal direction of the artificial blood vessel (40) is provided on the lower side of the second fitting valve (50), and a fixing block (52) that supports the slider (51) is provided on the lower side of the slider (51), wherein the slider (51) has a protrusion (51a) formed on its side, and the fixing block (52) has a plurality of insertion holes (52a) into which the protrusion (51a) is inserted formed on its side along the longitudinal direction of the artificial blood vessel (40). Claim 4 In claim 2, a slider (51) that moves back and forth along the longitudinal direction of the artificial blood vessel (40) is provided at the lower end of the second fitting valve (50), and a fixing block (52) that supports the slider (51) is provided at the lower side of the slider (51), wherein the slider (51) has a recessed groove (51b) formed on its side, and a spring (51c) and an insertion ball (51d) are installed within the recessed groove (51b) to provide elastic force in the direction in which the insertion ball (51d) is pushed outward, and the fixing block (52) has an insertion hole (52a) formed on its side along the longitudinal direction of the artificial blood vessel (40) into which a part of the insertion ball (51d) protruding outward from the recessed groove (51b) of the slider (51) is inserted, characterized in that the fixing block (52) has an insertion hole (52a) formed on its side along the longitudinal direction of the artificial blood vessel (40) to allow for the movement and control of fluid similar to that of a human blood vessel. Claim 5 An artificial blood vessel suturing practice kit for education and practice capable of moving and controlling fluid similar to human blood vessels, characterized in that, in claim 3 or claim 4, the first fitting valve (30) and the fixing block (52) are installed on the upper surface of a table (60) having a certain height. Claim 6 An artificial blood vessel suturing practice kit for education and practice capable of moving and controlling fluid similar to human blood vessels, characterized in that, in claim 5, it further comprises a tank (70) that accommodates the table (60) inside and receives artificial blood or water leaking from the fluid conduit (20) and artificial blood vessel (40). Claim 7 An artificial blood vessel suturing practice kit for education and practice capable of moving and controlling fluid similar to human blood vessels, characterized in that, in claim 6, a mounting stand (90) for mounting a smartphone (P) for video recording is installed on the table (60) or tank (70). Claim 8 An artificial blood vessel suturing practice kit for education and practice capable of moving and controlling fluid similar to human blood vessels, characterized in that, in claim 1, a pressurizer (13) is connected to the storage container (10), and artificial blood or water is discharged out of the storage container (10) by pressure provided by the pressurizer (13) and supplied to the fluid conduit (20). Claim 9 An artificial blood vessel suturing practice kit for education and practice capable of moving and controlling fluid similar to human blood vessels, wherein, in claim 8, the pressurizer (13) is a dropper that applies pressure inside the storage container (10) through a connecting tube (11). Claim 10 An artificial blood vessel suturing practice kit for education and practice capable of moving and controlling a fluid similar to a human blood vessel, characterized in that, in claim 1, a pressure gauge (23) for measuring the pressure of artificial blood or water flowing through the fluid pipe (20) is installed on the fluid pipe (20). Claim 11 An artificial blood vessel suturing practice kit for education and practice capable of moving and controlling fluid similar to human blood vessels, characterized in that it further comprises a stand (80) for mounting the storage container (10) and the pressure gauge (23) according to claim 10. Claim 12 An artificial blood vessel suturing practice kit for education and practice capable of moving and controlling fluid similar to human blood vessels, characterized in that, in claim 11, the stand (80) comprises: a storage container holder (81) for housing the storage container (10); a pressure gauge holder (82) provided on the front of the storage container holder (81) for mounting the pressure gauge (23); and a support leg (83) extending horizontally from the bottom of the storage container holder (81). Claim 13 An artificial blood vessel suturing practice kit for education and practice capable of moving and controlling fluid similar to human blood vessels, characterized in that, in claim 1, a rigid binding member (41) is connected between the first fitting valve (30) and the artificial blood vessel (40) and between the second fitting valve (50) and the artificial blood vessel (40). Claim 14 In claim 13, the binding member (41) is composed of a fitting connection part (41a) connected to the first fitting valve (30) and the second fitting valve (50), and a blood vessel connection part (41b) formed integrally with the fitting connection part (41a) and connected to the artificial blood vessel (40), wherein the blood vessel connection part (41b) is formed such that its diameter decreases toward the artificial blood vessel (40), and a plurality of ring-shaped wedges (41c) are formed protruding from the outer surface, thereby providing an artificial blood vessel suturing practice kit capable of moving and controlling fluid similar to human blood vessels.

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