Clamping device

Abstract

To provide a clamping device that can be easily grasped with forceps or the like, can be reliably pulled, and has a non-slip surface that does not interfere with the procedure. [Solution] The device comprises two rigid rod-shaped bodies 4 and 5, each having a flexible strip 1 or strip 2 at one end, and the two rod-shaped bodies 4 and 5 are connected by a connecting part 6. The strip 1 is provided with a strip-shaped anti-slip portion 7, through holes 3a and 3b. A small slit is provided in the through hole 3a, and when the strip 2 is inserted through it, the slit opens, connecting the through hole 3a and the through hole 3b. The strip-shaped anti-slip portion 7 extends from the middle of one side of the strip 1 in a way that it branches out diagonally downward. The anti-slip portion 7 is approximately 4 mm wide and approximately 1 mm thick. The anti-slip portion 7 is made of urethane resin and is integrally molded with the strip 1.

Description

Technical Field

[0001] The present invention mainly relates to a clamping instrument for completely clamping tubular tissues in surgical operations such as intestinal and genital surgeries.

Background Art

[0002] There is a need for a medical clamping instrument that can easily, safely, and reliably clamp the intestinal tract during surgeries such as intraoperative intestinal lavage in the field of digestive surgery. Therefore, an intestinal tract clamping instrument is known that is composed of two rigid rod-shaped bodies having a flexible belt at one end, a connecting portion to which the rod-shaped bodies are connected, and a through-hole provided in one of the belts (see Patent Document 1). By using this intestinal tract clamping instrument, in the operation of clamping the intestinal tract, no force is required when moving the instrument to the clamping location, and force is only required when inserting and pulling the belt through the through-hole. Therefore, when handling the instrument, it does not impose an excessive burden on the surgeon. In addition, by clamping the intestinal tract with the rod-shaped body, the width of the intestinal tract can be expanded and clamped on the side surface of the rod-shaped body, so the number of constricted portions can be reduced, and it also has the effect that it is possible to confirm whether the intestinal tract is sufficiently clamped. As described above, the intestinal tract clamping instrument of Patent Document 1 is manufactured and sold as a medical product (product name: Gut Clamper) for the purpose of intestinal tract grasping and closing in laparoscopic anterior resection of the rectum and the like. The Gut Clamper can clamp in a direction orthogonal to the rectal axis and can also clamp a thick intestinal tract. In a situation where sufficient space cannot be secured, such as in laparoscopic surgery, the operation of clamping the intestinal tract for intestinal resection techniques to completely close the intestinal lumen can be performed simply, reliably, and safely, and thus it is utilized in the medical field.

[0003] However, in the intestinal tract clamping instrument of Patent Document 1, there are problems such as being slippery and difficult to control the gripping position when gripping the belt with forceps or the like during the fastening or releasing operation. Also, even if an anti-slip mechanism is provided on the belt, the mechanism may hinder the procedure and instead reduce the convenience.

Prior Art Documents

[0004] [Patent Document 1] Patent No. 4090058 [Overview of the Initiative] [Problems that the invention aims to solve]

[0005] In light of these circumstances, the objective is to provide a clamping device that can be easily grasped with forceps or the like, can be reliably pulled, and has an anti-slip mechanism that does not interfere with the procedure. [Means for solving the problem]

[0006] To solve the above problems, the clamping device of the present invention is a device for clamping tubular tissue with two rigid rod-shaped bodies, the rod-shaped bodies being of different lengths, each having a flexible band at one end and connected at the other end, and when the rod-shaped bodies are aligned parallel to each other with the connected part as a fulcrum, the position of the through hole provided in the first band joined to the shorter rod-shaped body coincides with the tip of the longer rod-shaped body, the second band joined to the longer rod-shaped body is inserted through the through hole, and an anti-slip portion is provided to support the tensile force applied to the first band when the tip of the longer rod-shaped body is fitted into the through hole. With this configuration, the first band can be effectively prevented from slipping off medical instruments such as forceps when clamping tubular tissues such as the intestines and fallopian tubes, thereby improving the convenience of the procedure.

[0007] In the clamping device of the present invention, the anti-slip portion is a strip-shaped member provided on one side of the first band, and its tip may extend toward the rod-shaped body. By providing the anti-slip portion on only one side, the burden on surrounding organs can be reduced. Furthermore, manufacturing costs can be reduced.

[0008] In the clamping device of the present invention, the anti-slip portion is a pair of strip-shaped members provided on both sides of the first band, and the tips may extend toward the rod-shaped body. By providing the anti-slip portion on both sides, the first band can be clamped more stably using a medical instrument such as forceps.

[0009] In the clamping device of the present invention, the anti-slip portion may be a spherical, hemispherical, prismatic, or polyhedral member provided inside or outside the first band. By using a spherical member, the burden on surrounding organs can be reduced. Providing it inside the first band means, in other words, that the spherical member is covered by the first band. On the other hand, providing it outside the first band means that it is, for example, bonded or welded to the outside of the first band. When the anti-slip portion is a spherical member, it is preferable to provide it inside the first band, and when the anti-slip portion is a hemispherical member, it is preferable to provide it inside the first band. Prisms include triangular prisms, cubes, rectangular prisms, and other rectangular prisms. When placed inside the first strip, it is preferable that the longitudinal direction of the prism be perpendicular to the first strip. Polyhedra refer to tetrahedrons, hexahedrons, octahedrons, and the like.

[0010] In the clamping device of the present invention, the anti-slip portion, which is made of a strip-shaped member, may be provided at multiple different positions along the longitudinal direction of the first strip. This allows for the provision of multiple areas where the anti-slip mechanism functions, thereby improving the degree of freedom in the procedure. Furthermore, in the gut clamper clamping device of the present invention, the anti-slip member, which is made of a spherical, hemispherical, prismatic, or polyhedral-shaped member, may be provided at multiple different positions along the longitudinal direction of the first strip.

[0011] In the clamping device of the present invention, the surface of the rod-shaped body is covered with a coating made of a flexible resin, and it is preferable that the first band, the second band, the portion to which the rod-shaped body is connected, the coating, and the anti-slip portion are integrally molded using a soft and flexible resin. This allows the clamping device to have a seamless structure, which reduces the burden on organs. In the clamping device of the present invention, it is preferable that the length of the first band is shorter than the length of the second band. By making the first band shorter, a structure can be made that is less likely to interfere with organs, etc. Since an anti-slip portion is provided, even if the first band is made shorter, the structure is such that the first band can be firmly gripped. [Effects of the Invention]

[0012] The clamping device of the present invention has the effect of improving convenience because it can be easily grasped with forceps or the like, can be reliably pulled, and does not interfere with the procedure. [Brief explanation of the drawing]

[0013] [Figure 1] Front view of the clamping device in Example 1 [Figure 2] Right side view of the clamping device in Example 1 [Figure 3] Diagram illustrating the clamping device of Example 1 [Figure 4] Image illustrating the use of the clamping device in Example 1 (with the band inserted through the through-hole). [Figure 5] Image illustrating the use of the clamping device in Example 1 (the band is fully passed through the through-hole and clamped). [Figure 6] Image illustrating the use of the clamping device in Example 1 (the tip of a long rod-shaped body is inserted into the through-hole and locked in place). [Figure 7] Image illustrating the use of the clamping device in Example 1 (one of the bands is pulled, causing the tip of the long rod-shaped body to detach from the through-hole and release the clamping state). [Figure 8] Front view and right side view of the clamping device of Example 2 [Figure 9] Front view and right side view of the clamping device of Example 3 [Figure 10] Diagram illustrating the clamping device of Example 4 [Figure 11] Diagram illustrating the clamping device of Example 5 [Figure 12] Diagram illustrating the clamping device of Example 6 [Figure 13] Diagram illustrating the clamping device of Example 7

Mode for Carrying Out the Invention

[0014] Hereinafter, an example of an embodiment of the present invention will be described in detail with reference to the drawings. The scope of the present invention is not limited to the following examples and illustrated examples, and many changes and modifications are possible.

Example

[0015] Hereinafter, an example of an embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 or FIG. 2 is an external view of the clamping device of Example 1, FIG. 1 is a front view, and FIG. 2 is a right side view. Further, FIG. 3 is an external view of the clamping device of Example 1. While FIGS. 1 or 2 show the state where the whole is extended, FIG. 3 shows the state bent at the connecting portion and the like. As shown in FIG. 1, the clamping device 10 of Example 1 includes two rigid rod-like bodies (4, 5), and flexible belts (1, 2) are provided at one end of each rod-like body, respectively. The two rod-like bodies (4, 5) are connected by a connecting portion 6, and the belt 1 is provided with a belt-like anti-slip portion 7 and through holes (3a, 3b). As shown in FIG. 3, a small cut is provided in the through hole 3a, and by inserting the belt 2, the cut opens, and the through hole 3a and the through hole 3b are connected. The overall length L1 of the clamping device 10 is 270 to 300 mm.

[0016] For the two rigid rod-like bodies (4, 5), cylindrical rods made of stainless steel are used. Regarding the length of the rod-like bodies, the length L2 of the short rod-like body 4 is about 50 mm, and the length L3 of the long rod-like body 5 is about 55 mm. The diameter of both rod-like bodies is about 2 mm. Also, the difference in length of about 5 mm between the rod-like body 4 and the rod-like body 5 is provided to smoothly fit the tip portion 5a of the long rod-like body 5 into the through hole, as will be described later. Note that the length and diameter of these rod-like bodies can be adjusted according to the part of the tubular tissue to be clamped.

[0017] Of the bands (1,2), band 1 is the first band joined to a short rod-shaped body 4, and band 2 is the second band joined to a long rod-shaped body 5. Bands (1,2) are made of soft, flexible, and elastic urethane resin. Band 1 has through holes (3a,3b) and its length L4 is 22-37 mm. Band 2, on the other hand, is inserted through the through holes, and its length is longer than band 1 to facilitate insertion by the surgeon (not shown), with a length L5 of approximately 150 mm. In addition, the tip 2a of band 2 is tapered to facilitate insertion through the through holes (3a,3b). Both bands (1,2) are approximately 4 mm wide and approximately 1 mm thick. The band 2 is provided with locking parts (21a, 21b), and when the band 2 is inserted through the through holes (3a, 3b), it can be locked in place at either position of the locking parts (21a, 21b). The lengths of the bands (1, 2) can be adjusted as appropriate according to the surgeon's requirements, but specifically, they can be adjusted to a length that facilitates handling of the bands, taking into account the pinching procedure during laparoscopic surgery.

[0018] As shown in Figure 2, the band-shaped anti-slip portion 7 extends from the middle of one side of the band 1, branching out downwards to the left. The anti-slip portion 7 is approximately 4 mm wide and approximately 1 mm thick. The anti-slip portion 7 is made of urethane resin and, as will be described later, is integrally molded with the band 1. Therefore, it is possible to easily hook forceps or the like into the gap 16 provided between the band 1 and the anti-slip portion 7. Furthermore, as shown in Figure 2, the anti-slip portion 7 does not protrude vertically from the band 1, but rather branches out downwards to the left, so it has an anti-slip mechanism while being less likely to interfere with the procedure. In addition, the presence of the anti-slip portion 7 prevents the band 1 from slipping off the forceps or the like used to grasp it, which has the advantage of allowing the band 1 to be designed to be shorter.

[0019] Next, the method of joining the band and the rod-shaped body, and the method of connecting the two rod-shaped bodies, will be explained below. The rod-shaped bodies (4, 5) are each covered with a coating (40, 50) made of urethane resin. That is, in this embodiment, the band (1, 2), the anti-slip part 7, the coating (40, 50), and the connecting part 6 are integrally molded using a soft, flexible, and elastic urethane resin by a heat-sealing method. Therefore, as shown in Figure 3, the flexible connecting part 6 can be bent, and tubular tissue such as the intestinal tract can be gripped by the rod-shaped bodies (4, 5). Instead of urethane resin, soft resins such as natural rubber, synthetic rubber, or low-density polyethylene may be used. In addition to the heat-sealing method, injection molding, heat compression molding, or adhesive integral molding methods may also be used. The band is colored by mixing coloring pigments into the resin.

[0020] Figures 4 to 7 illustrate the usage of the clamping device of the present invention. The following is a step-by-step explanation. First, Figure 4 shows the band 2 inserted through the through holes (3a, 3b). The surgeon, Using a medical instrument such as forceps, grasp the band (1,2) and insert band 2 through the through-hole (3a,3b). For the sake of explanation, only the gripping portion (9a,9b) of the forceps 9 that grasps band 1 is shown in this illustration. By inserting the other band 2 through the through holes (3a, 3b) provided in one band 1 from the tip 2a side, the tubular tissue 15 can be gripped by the two rod-shaped bodies (4, 5) with the connecting part 6 as a fulcrum. In Figure 4, band 2 is inserted through the through holes (3a, 3b) so that band 1, band 2, rod-shaped body 4, and rod-shaped body 5 surround the tubular tissue 15. When inserting band 2 through the through holes (3a, 3b), a frictional force is generated between band 2 and the through holes (3a, 3b). If there is no anti-slip part 7 on band 1, even if band 1 is gripped by forceps 9, band 1 is shorter than band 2, so there is a problem that band 1 is likely to slip off the gripping parts (9a, 9b) of forceps 9. In contrast, since the strip 1 of Example 1 is provided with an anti-slip portion 7, as shown in Figure 4, one of the clamping portions (9a, 9b), the clamping portion 9a, catches on the gap 16 and functions as an anti-slip portion.

[0021] Next, Figure 5 shows the state in which the band 1 is grasped and the tip of the band 2 is pulled, thereby passing the band 2 all the way through the through holes (3a, 3b), and the tubular tissue 15 is sandwiched between the rod-shaped bodies 4 and 5. Here again, the presence of the anti-slip portion 7 allows the band 1 to be stably grasped by the gripping portions (9a, 9b) of the forceps 9, while the band 2 is pulled and the tubular tissue 15 is sandwiched.

[0022] Furthermore, Figure 6 illustrates the state in which the tip of the long rod-shaped body is inserted into the through-hole and locked. A difference in length is provided between the two rod-shaped bodies (4, 5), and through-holes (3a, 3b) are provided in the band 1 joined to the shorter rod-shaped body 4. The through-holes (3a, 3b) are positioned at the tip of the longer rod-shaped body 5 when the two rod-shaped bodies are aligned with the connecting part 6 as a fulcrum. As shown in Figure 6, by inserting the band 2 entirely through the through-holes (3a, 3b) from the tip side, the tip 5a of the long rod-shaped body 5 can be inserted into the through-holes (3a, 3b) and locked. Even in this case, the presence of the anti-slip part 7 allows the band 1 to be stably gripped by the clamping parts (9a, 9b) of the forceps 9, and the band 1 can be pulled to insert the tip of the long rod-shaped body 5 into the through-holes (3a, 3b) and locked. As shown in Figure 1, the joint 2b between the band 2 and the rod-shaped body 5 is wide and has a shape that facilitates locking.

[0023] Next, a method for releasing the clamped state will be described. To release the clamped state, such as by shifting the clamped portion of the tubular tissue 15, the connecting portion 6 of the rod-shaped body is grasped and the band 1 is pulled, causing the tip 5a of the rod-shaped body 5 to slip out of the through-hole (3a, 3b), and the locking state can be released. Figure 7 illustrates the state in which the clamped state has been released by grasping the connecting portion 6 of the rod-shaped body with forceps, etc., and pulling the band 1 using the gripping portions (9a, 9b) of the forceps 9, thereby pulling out the tip 5a of the long rod-shaped body from the through-hole (3a, 3b). Even in this case, because the anti-slip portion 7 is provided, the band 1 can be stably gripped with the gripping portions (9a, 9b) of the forceps 9, and the band 1 can be pulled upward, making it easy to pull out the tip 5a of the long rod-shaped body from the through-hole (3a, 3b).

[0024] Furthermore, because the band 1 is flexible and elastic, the shape of the through holes (3a, 3b) provided in the band 1 also deforms into an elliptical shape in the direction of tension, making it easier for the tip 5a of the rod-shaped body to slip out of the through holes (3a, 3b). Unless the band 1 is pulled, the tip 5a of the rod-shaped body will not fall out of the through holes (3a, 3b), and the structure maintains a state in which it securely holds the tubular tissue 15. [Examples]

[0025] Figure 8 is an external view of the clamping device of Example 2, where (1) is a front view and (2) is a right side view. As shown in Figure 8(1) or (2), unlike the clamping device 10 of Example 1, the clamping device 11 of Example 2 has a pair of anti-slip members (7a, 7b) on both sides of the first strip body, which is the strip body 1. The anti-slip member 7a has the same structure as the anti-slip member 7 in the clamping device 10. Similarly, the anti-slip member 7b has the same structure as the anti-slip member 7, except that it is provided on the back side of the strip body 1.

[0026] In other words, the strip-shaped anti-slip portions (7a, 7b) extend from the middle of the strip 1 shown in Figure 8(2) in a manner that branches out to the lower left or lower right. Each of the anti-slip portions (7a, 7b) is approximately 4 mm wide and approximately 1 mm thick. The anti-slip portions (7a, 7b) are made of urethane resin and are integrally molded with the strip 1. Therefore, the clamping device 11 of Example 2 has a structure that allows for more stable hooking of forceps and the like, as a gap 16a is formed not only between the strip 1 and the anti-slip portion 7a, but also between the strip 1 and the anti-slip portion 7b. The rest of the structure is the same as that of the clamping device 10 in Example 1. [Examples]

[0027] Figure 9 shows a front view and a right side view of the clamping device of Example 3, where (1) is the front view and (2) is the right side view. As shown in Figure 9(1) or (2), the clamping device 12 of Example 3 differs from the clamping device 10 of Example 1 in that a spherical anti-slip portion 8 is provided inside the first band, which is the band 1. In other words, the anti-slip portion 8 is covered by the band 1. The anti-slip portion 8 is preferably made of a hard material such as metal or resin, but it may also be made of a soft material such as resin. For example, if urethane resin is used as the soft material, the band 1 and the anti-slip portion 8 may be integrally molded. The rest of the structure is the same as that of the clamping device 10 of Example 1. The presence of the anti-slip portion 8 creates protrusions on both sides of the band 1, which function as an anti-slip feature when the surgeon grasps the band 1 between the anti-slip portion 8 and the through-hole 3b with forceps or the like. Furthermore, compared to a band-shaped member, the member itself is less likely to interfere with organs or medical instruments, and its structure does not hinder the procedure. [Examples]

[0028] Figure 10 is an explanatory diagram of the clamping device of Example 4, where (1) is an enlarged image of part A in Figure 8, and (2) is an enlarged image of the band of Example 4. As shown in Figure 10(1) or (2), the clamping device 13 of Example 4, like the clamping device 11 of Example 2, has a pair of anti-slip parts (7c, 7d), which are band-shaped members, on both sides of the band 1, which is the first band. However, in the clamping device 11 of Example 2, the band-shaped anti-slip parts (7a, 7b) are provided at approximately the same height, whereas in the clamping device 13 of Example 4, the band-shaped anti-slip parts (7c, 7d) are provided at different heights. That is, the anti-slip part 7c is provided at a higher position than the anti-slip part 7a, and the anti-slip part 7d is provided at a lower position than the anti-slip part 7b.

[0029] This allows for gaps (16c, 16d) to be provided at different heights. As shown in Figure 10(2), the surgeon can either use gap 16c to stably grip the band 1 with the gripping parts (9a, 9b) of the forceps 9, or use gap 16d to stably grip the band 1 with the gripping parts (9a, 9b) of the forceps 9. By providing multiple anti-slip parts at different positions in this way, the degree of freedom in the procedure is improved. The rest of the structure is the same as that of the clamping device 10 in Example 1. [Examples]

[0030] Figure 11 is an explanatory diagram of the clamping device of Example 5, where (1) is an enlarged image of part B in Figure 9, and (2) is an enlarged image of the band of Example 5. As shown in Figure 11(1) or (2), the clamping device 14 of Example 5, like the clamping device 12 of Example 3, has a spherical anti-slip portion inside the band 1, which is the first band. However, while the clamping device 12 of Example 3 has one anti-slip portion 8 on the band 1, the clamping device 14 of Example 4 has two anti-slip portions (8a, 8b) provided at different positions on the band 1. That is, the anti-slip portion 8a is provided at a higher position than the anti-slip portion 8, and the anti-slip portion 8b is provided at a lower position than the anti-slip portion 8.

[0031] As a result, as shown in Figure 11(2), the surgeon can either use the protrusions formed by the anti-slip portion 8a to stably grip the band 1 with the gripping portions (9a, 9b) of the forceps 9, or use the protrusions formed by the anti-slip portion 8b to stably grip the band 1 with the gripping portions (9a, 9b) of the forceps 9. In this way, by providing multiple anti-slip portions at different positions, the degree of freedom in the procedure is improved. The rest of the structure is the same as that of the clamping device 12 in Example 3. [Examples]

[0032] Figure 12 is an explanatory diagram of the clamping device of Example 6, where (1) shows the case where the anti-slip parts are provided at the same height, and (2) shows the case where the anti-slip parts are provided at different heights. In the clamping device 12 of Example 3, one spherical member, the anti-slip part 8, is provided inside the first band, the band 1, whereas, as shown in Figure 12(1), the clamping device 15 of Example 6 has hemispherical anti-slip parts (8c, 8d) provided on both sides of the first band, the band 1. This allows the surgeon to stably clamp the band 1 with the clamping parts (9a, 9b) of the forceps 9 by utilizing the protrusions formed by the anti-slip parts (8c, 8d). Furthermore, by attaching them to the surface of the band 1 rather than inside, manufacturing is made easier and costs can be reduced. In addition, because the anti-slip parts (8c, 8d) are hemispherical, there are no corners on the surface, making it less likely to injure organs, etc., when performing the procedure. The anti-slip parts (8c, 8d) are preferably made of a hard material such as metal or resin, but may also be made of a soft material such as resin. The anti-slip parts (8c, 8d) may be attached to the strip 1 using a known adhesive or by heat welding. For example, if urethane resin is used as the soft material, the strip 1 and the anti-slip parts (8c, 8d) may be integrally molded.

[0033] Furthermore, as shown in Figure 12(2), unlike the clamping device 15, the clamping device 16 of Example 6 has hemispherical anti-slip portions (8e, 8f) at different positions on both sides of the first strip body 1. That is, the anti-slip portion 8e is located higher, and the anti-slip portion 8f is located lower. This allows the surgeon to stably grasp the band 1 with the gripping parts (9a, 9b) of the forceps 9 by utilizing the protrusions formed by the anti-slip portion 8e, or to stably grasp the band 1 with the gripping parts (9a, 9b) of the forceps 9 by utilizing the protrusions formed by the anti-slip portion 8f. In this way, providing multiple anti-slip portions at different positions improves the flexibility of the procedure. Alternatively, anti-slip sections (8g, 8h) shown by dashed lines may be provided. For example, if anti-slip sections (8e~8h) are provided, protrusions are formed on both sides of the band 1, making it easier to grip with the gripping sections (9a, 9b) of the forceps 9. In contrast, if only the anti-slip sections (8e, 8f) shown by solid lines are provided, the structure is made up of fewer components, resulting in a more compact shape, improved convenience, and lower manufacturing costs. Multiple hemispherical anti-slip sections may be provided on only one side, for example, by providing only anti-slip sections (8e, 8h) or only anti-slip sections (8g, 8f). The material and mounting method of the anti-slip sections (8e~8h) are the same as those of the anti-slip sections (8c, 8d). Furthermore, the other structural aspects are the same as those of the clamping device 10 in Example 1. [Examples]

[0034] Figure 13 is an explanatory diagram of the clamping device of Example 7, where (1) is an enlarged image of the band from the front and (2) is an enlarged image of the band from the right side. In the clamping device 12 of Example 3, a single spherical anti-slip member 8 is provided inside the band 1, which is the first band, whereas in the clamping device 17 of Example 7, as shown in Figures 13(1) and (2), a cubic prism-shaped anti-slip member 80 is provided inside the band 1, which is the first band. This allows the surgeon to stably clamp the band 1 with the clamping parts (9a, 9b) of the forceps 9 by utilizing the protrusions formed by the anti-slip member 80. Since the anti-slip member 80 is covered by the band 1, the corners of the anti-slip member 80 do not directly come into contact with organs, etc., and the structure is designed not to damage organs, etc. during the procedure. The other structures are the same as those of the clamping device 12 of Example 3. [Industrial applicability]

[0035] The clamping device of the present invention is useful as a clamp for tubular tissues such as the intestines and fallopian tubes. [Explanation of Symbols]

[0036] 1. Band (the side with the through hole) 2. Band (the part that goes through the through hole) 2a Tip 2b joint 3a,3b through hole 4. Rod-shaped body (the shorter one) 5. Rod-shaped object (the longer one) 5a The tip of the rod-shaped body (the longer one) 6 Connecting part 7,7a,7b Anti-slip section (strip-shaped member) 8,8a~8h Anti-slip section (spherical member or hemispherical member) 9 forceps 9a,9b Clamping part 10-17 Clamping devices 15 Tubular tissue 16,16a~16d gap 21a, 21b Locking part 40,50 Covering 80 Anti-slip section (square column member) A,B part L1~L5 Length

Claims

1. An instrument that uses two rigid rod-shaped bodies to grip tubular tissue, The aforementioned rod-shaped bodies are provided with differences in length, each having a flexible band at one end and connected at the other end. When the rod-shaped bodies are aligned parallel to each other with the connected portion as a fulcrum, the position of the through hole provided in the first band joined to the shorter rod-shaped body coincides with the tip of the longer rod-shaped body. A clamping device characterized in that a second band, joined to a long rod-shaped body, is inserted through the through hole, and an anti-slip portion is provided to support the tensile force applied to the first band when the tip of the long rod-shaped body is fitted into the through hole.

2. The clamping device according to claim 1, characterized in that the anti-slip portion is a strip-shaped member provided on one side of the first strip body, and its tip extends toward the rod-shaped body side.

3. The clamping device according to claim 1, characterized in that the anti-slip portion is a pair of strip-shaped members provided on both sides of the first strip body, the tips of which extend toward the rod-shaped body side.

4. The clamping device according to claim 1, characterized in that the anti-slip portion is a spherical, hemispherical, prismatic, or polyhedral member provided inside or outside the first band.

5. The clamping device according to claim 2, characterized in that the anti-slip portion is provided in multiple locations at different positions in the longitudinal direction of the first band.

6. The clamping device according to claim 4, characterized in that the anti-slip portion is provided in multiple locations at different positions in the longitudinal direction of the first band.

7. The surface of the rod-shaped body is covered with a coating made of a flexible resin. The clamping device according to any one of claims 1 to 6, characterized in that the first band, the second band, the portion to which the rod-shaped body is connected, the covering body, and the anti-slip portion are integrally molded using a soft and flexible resin.

8. The clamping device according to feature 7, wherein the length of the first band is shorter than the length of the second band.

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