Gut clamper

Abstract

To provide a gut clamper capable of further firmly clamping a tubular tissue such as a fallopian tube thicker than an intestinal tract.SOLUTION: A gut clamper comprises two rigid rod-like bodies each including a flexible belt body at one end thereof, the rod-like bodies with different lengths are connected at the other end thereof, and when the rod-like bodies are aligned in parallel, with the connected part used as a fulcrum, a position of a through-hole provided in a first belt body joined with the short rod-like body matches a tip of the long rod-like body, and when the second belt body joined with the long rod-like body is entirely inserted into the through hole. the tip of the long rod-like body is fitted into the through-hole and locked, so as to clamp tubular tissue between the two rod-like bodies. The gut clamper comprises a pair of spiral members with different winding directions on the respective-side peripheral surfaces of the rod-like bodies.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a clamping device for completely compressing tubular tissue, primarily in surgical procedures for the intestine and reproductive organs. [Background technology]

[0002] There is a demand for a medical clamping device that can easily, safely and reliably clamp the intestines during surgery for intraoperative intestinal cleansing and the like in the field of gastrointestinal surgery. In view of this, an intestinal clamping device is known that is composed of two rigid rod-shaped bodies with a flexible band at one end, a connecting portion to which the rod-shaped bodies are connected, and a through-hole provided in one of the bands (see Patent Document 1). By using this intestinal clamping device, in the task of clamping the intestines, no force is required when the instrument is brought to the clamping location, and force is only required when inserting the band through the through-hole and pulling it, so that the surgeon is not overly burdened when handling the instrument. In addition, by clamping the intestines with the rod-shaped bodies, the width of the intestines can be expanded by the sides of the rod-shaped bodies, so that the number of constrictions can be reduced, and there is also the effect that it is possible to check whether the intestines are clamped sufficiently. Thus, the intestinal clamping device of Patent Document 1 is manufactured and sold as a medical product (product name: gut clamper) for the purpose of grasping and closing the intestine in laparoscopic stereotactic anterior rectal resection, etc. Gut clampers can clamp in a direction perpendicular to the rectal axis and can clamp thick intestines, and are used in medical settings as they can easily, reliably, and safely perform tasks such as clamping the intestine and completely closing the intestinal lumen for intestinal resection procedures in situations where sufficient space cannot be secured, such as laparoscopic surgery.

[0003] However, when considering the application of gut clamps to clamping fallopian tubes in obstetrics and gynecology, for example, in addition to clamping intestines, improvements are needed to ensure more reliable clamping, since tubular tissues such as fallopian tubes are thicker than intestines. When clamping fallopian tubes under laparoscopy, current gut clamps are not suited to the thickness of the fallopian tubes, making clamping difficult and making them prone to slipping off. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent No. 4090058 Summary of the Invention [Problem to be solved by the invention]

[0005] In view of the above circumstances, an object of the present invention is to provide a gut clamper that can more firmly clamp tubular tissue such as the fallopian tube, which is thicker than the intestine. [Means for solving the problem]

[0006] In order to solve the above problems, the gut clamper of the present invention comprises two rigid rods with a flexible band at one end, each of which is a different length and is connected at the other end, so that when the rods are aligned side by side, with the connected part as a fulcrum, the position of the through hole in the first band connected to the shorter rod coincides with the tip of the longer rod, and the second band connected to the longer rod is inserted in its entirety through the through hole, thereby fitting and locking the tip of the longer rod into the through hole, and the gut clamper which clamps the tubular tissue between the two rods is characterized in that a pair of spiral members are provided on the lateral surfaces of each of the rods.

[0007] According to this configuration, tubular tissue such as the fallopian tube, which is thicker than the intestine, can be clamped more reliably, without slippage, and the clamp position can be fixed. In the gut clamper of the present invention, the pair of helical members may have different winding directions. By providing a pair of helical members with different winding directions on each side surface of the rod-shaped body of the gut clamper, slippage of the tubular members to be fastened can be prevented. Furthermore, by providing a pair of helical members with the same winding direction, manufacturing costs can be reduced.

[0008] In the gut clamper of the present invention, the longitudinal length of the helical member is preferably at least half and less than one-half the longitudinal length of the rod-shaped body. The helical member is specifically a spring member of a metallic helical spring. The surface of the rod-shaped body is covered with a covering made of a flexible resin, and the helical member is provided so as to further cover the covering. Furthermore, the two strips, the portion where the rod-shaped body is connected, and the covering are integrally molded using a soft and flexible resin. The helical member of the gut clamper of the present invention may be provided with protective covers for covering each end thereof, thereby protecting the ends of the helical member and improving safety. Effect of the Invention

[0009] The gut clamper of the present invention has the effect of being able to more firmly clamp tubular tissue such as the fallopian tube, which is thicker than the intestine. [Brief description of the drawings]

[0010] [Figure 1] Appearance of the gut clamper (1) [Diagram 2] Appearance of the gut clamper (2) [Diagram 3] Image of how to use the gut clamp (with the string inserted through the through hole) [Figure 4] Image of how the gut clamp is used (with the strings passed through the holes and clamped in place) [Diagram 5] Image of how the gut clamp is used (with the tip of the long rod inserted and locked into the through hole) [Figure 6] Image of how the gut clamper is used (pulling one of the bands, causing the tip of the long rod to fall out of the through hole and release the clamped state) [Figure 7] Illustration of right-handed and left-handed spring members [Figure 8] Image of right-handed and left-handed spring members engaging [Figure 9] Illustration of protective cover DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] Hereinafter, an example of an embodiment of the present invention will be described in detail with reference to the drawings. Note that the scope of the present invention is not limited to the following examples and illustrated examples, and many modifications and variations are possible. EXAMPLES

[0012] Hereinafter, an example of an embodiment of the present invention will be described in detail with reference to the drawings. Figures 1 and 2 are external views of the gut clamper of the present invention, with Figure 1 showing it in an extended state and Figure 2 showing it in a folded state at the connecting portion etc. As shown in Figure 1, the gut clamper 10 of the present invention comprises two rigid rod-like bodies (4, 5), each of which has a flexible strap (1, 2) attached to one end thereof, the two rod-like bodies (4, 5) connected to each other at a connecting portion 6, and the strap 1 having through holes (3a, 3b). The total length L1 of the gut clamper 10 is 250-330 mm.

[0013] 2, the two rod-shaped bodies (4, 5) are covered with covering bodies (9a, 9b) made of flexible resin, respectively. Furthermore, spring members are wound around the outer sides of the covering bodies (9a, 9b) of the rod-shaped bodies (4, 5). Specifically, a left-handed spring member 7 is wound around the rod-shaped body 4, and a right-handed spring member 8 is wound around the rod-shaped body 5. The left-handed spring member 7 and the right-handed spring member 8 are made of metal, but may be made of resin.

[0014] Here, the two hard rod-shaped bodies (4, 5) are cylindrical rods made of stainless steel. With regard to the length of the rod-shaped bodies, the length L2 of the short rod-shaped body 4 is about 60 mm, and the length L3 of the long rod-shaped body 5 is about 65 mm. The diameter of each rod-shaped body is about 2 mm. The difference in length between the rod-shaped bodies 4 and 5 is about 5 mm, as described below, so that the tip portion 5a of the long rod-shaped body 5 can be smoothly inserted into the through-hole. The length and diameter of these rod-shaped bodies can be adjusted depending on the part of the tubular tissue to be clamped.

[0015] The bands (1, 2) are made of a soft, flexible, and elastic urethane resin. The band 1 has through holes (3a, 3b) and a length L4 of 60 to 100 mm. The band 2 is inserted into the through holes and is longer than the band 1, with a length L5 of 65 to 105 mm, to facilitate the insertion operation of the surgeon. The tip 2a of the band 2 is thinned to facilitate insertion into the through holes. Both bands (1, 2) are about 4 mm wide and about 1 mm thick. The band 2 is provided with locking portions (21a to 21c), and when the band 2 is inserted into the through holes (3a, 3b), it can be locked at any of the locking portions (21a to 21c). The length of each of the bands (1, 2) can be adjusted as desired by the surgeon, but the length of the band can be adjusted to a length that makes it easy to handle, taking into account the clamping work required in laparoscopic surgery.

[0016] Next, the method of joining the strip and the rod-shaped body and the method of connecting two rod-shaped bodies will be described below. In this embodiment, the strip, the covering body, and the connecting part are integrally molded by a heat fusion method using soft, flexible and elastic urethane resin. Natural rubber, synthetic rubber, or soft resin such as low-density polyethylene may be used instead of the urethane resin. In addition to the heat fusion method, injection molding, heat compression molding, or integral molding by adhesion may also be used. The strip is colored by mixing a coloring pigment into the resin.

[0017] 3 to 6 show how the gut clamper of the present invention is used. The following explains the usage in order. First, Fig. 3 shows the state in which the band 2 is inserted into the through holes (3a, 3b). Although not shown, a small slit is provided in the through hole 3a, and when the band 2 is inserted, the slit opens, and the through holes 3a and 3b communicate with each other. In this way, by inserting the other band 2 from the tip 2a side through the through-hole (3a, 3b) provided in one band 1 and passing it through the through-hole (3a, 3b), the two rod-shaped bodies can sandwich the tubular tissue with the connecting part 6 as a fulcrum. In Fig. 3, band 1, band 2, rod-shaped bodies 4 and rod-shaped bodies 5 form a ring, and the tubular tissue to be sandwiched is present inside this ring. In other words, band 2 is inserted through the through-hole (3a, 3b) so that the tubular tissue is surrounded by band 1, band 2, rod-shaped bodies 4 and rod-shaped bodies 5.

[0018] Next, Figure 4 shows the state in which the tip of band 1 is grasped and the tip of band 2 is pulled, thereby passing band 2 completely through the through holes (3a, 3b) and sandwiching the tubular tissue (not shown) between rod-shaped bodies 4 and 5.

[0019] FIG. 5 illustrates a state in which the tip of the long rod-shaped body is fitted into the through hole and locked. The length of the two rod-shaped bodies is different, and the through holes (3a, 3b) are provided in the band 1 joined to the short rod-shaped body 4, and the through holes are located at the tip of the long rod-shaped body 5 when the two rod-shaped bodies are aligned with the connecting part 6 as a fulcrum. Therefore, as shown in FIG. 5, the band 2 is inserted all the way through the through holes (3a, 3b) from the tip side, so that the tip 5a of the long rod-shaped body 5 can be fitted into the through hole and locked. As shown in FIG. 1, the joint 2b between the band 2 and the rod-shaped body 5 is provided with a wide width, and is shaped to be easily locked. As shown in FIG. 5, the left-handed spring member 7 wound around the rod-shaped body 4 and the right-handed spring member 8 wound around the rod-shaped body 5 have different winding directions, so that unevenness is formed alternately on the rod-shaped body 4 and the rod-shaped body 5. Such a structure will be described with reference to FIGS. 7 and 8.

[0020] Fig. 7 shows an explanatory diagram of a right-handed spring member and a left-handed spring member. Fig. 8 shows an image diagram of engagement between the right-handed spring member and the left-handed spring member. As shown in Fig. 7, a left-handed spring member 7 is wound around the rod-shaped body 4, and a right-handed spring member 8 is wound around the rod-shaped body 5. Note that the covering bodies (9a, 9b) are not shown here.

[0021] Since the left-handed spring member 7 is wound around the rod-shaped body 4, the left-handed spring member 7 is wound from the upper left to the lower right on the front side of the rod-shaped body 4 shown in Fig. 7. In contrast, since the right-handed spring member 8 is wound around the rod-shaped body 5, the right-handed spring member 8 is wound from the upper right to the lower left on the front side of the rod-shaped body 5 shown in Fig. 7, but on the other hand, the right-handed spring member 8 is wound from the upper left to the lower right on the rear side of the rod-shaped body 5. 8, for example, when the rod-shaped body 4 and the rod-shaped body 5 are brought into contact with each other, the front side portions (7a-7f) of the left-handed spring member 7 and the rear side portions (8a-8e) of the right-handed spring member 8 do not come into contact with each other, but the rod-shaped body 4 and the right-handed spring member 8, or the rod-shaped body 5 and the left-handed spring member 7 come into contact with each other. As a result, concaves and convexes are formed alternately on the rod-shaped body 4 and the rod-shaped body 5, improving the anti-slip effect.

[0022] Next, a method for releasing the pinched state will be described. When releasing the clamped state, for example by shifting the clamped portion of the tubular tissue, the connecting portion 6 of the rod-shaped body is grasped and the band 1 is pulled, so that the tip portion 5a of the rod-shaped body 5 falls out of the through-holes (3a, 3b) and the locked state can be released. Figure 6 illustrates the state in which the connecting portion 6 of the rod-shaped body is grasped and the band 1 is pulled, causing the tip portion 5a of the long rod-shaped body to fall out of the through-holes (3a, 3b) and release the clamped state.

[0023] Because the band 1 is flexible and elastic, the shape of the through-hole 3 provided in the band 1 also changes to an elliptical shape in the pulling direction, making it easier for the tip 5a of the rod-shaped body to fall out of the through-hole (3a, 3b). As long as the band 1 is not pulled, the tip 5a of the rod-shaped body will not fall out of the through-hole (3a, 3b), and will continue to securely hold the intestinal tract.

[0024] (Other Examples) FIG. 9 shows an explanatory diagram of a protective cover. As shown in FIG. 9, the left-handed spring member 7 is wound around the outside of the covering body 9a that covers the rod-shaped body 4, and a protective cover 11 may be provided to cover the periphery of the end of the left-handed spring member 7. By providing the protective cover 11, the end of the spring is protected and safety is improved. The protective cover 11 is made of a thin resin tape, and even if it is wrapped around the left-handed spring member 7, it can maintain the uneven shape and has a structure that does not lose the functionality of the left-handed spring member 7. A similar protective cover 11 may be provided not only at one end of the left-handed spring member 7 but also at both ends. In addition, although the left-handed spring member 7 is illustrated here, a similar protective cover 11 may also be provided for the right-handed spring member 8. [Industrial Applicability]

[0025] The gut clamper of the present invention is useful as a clamp for the fallopian tubes in obstetrics and gynecology. [Explanation of symbols]

[0026] 1 Belt (the one with the through hole) 2. Belt (inserted into the through hole) 2a Tip 2b joint 3a,3b through hole 4 Rod-shaped body (shorter one) 5 Rod-shaped body (longer one) 5a Tip of rod-shaped body (longer part) 6 Connecting part 7 Left-handed spring member 8 Right-handed spring member 9a,9b Covering 10 Gut Clamper 11 Protective cover 21a~21c Locking part L1~L5 length

Claims

1. A gut clamper comprising two rigid rod-like bodies each having a flexible band at one end, the rods being of different lengths and connected at the other end, the rods being aligned in parallel with each other about the connected part as a fulcrum, the position of a through hole in a first band connected to the short rod being aligned with the tip of the long rod, the position of a through hole in a first band connected to the short rod being aligned with the tip of the long rod, the position of a second band connected to the long rod being inserted through the through hole, the tip of the long rod being fitted into and locked in place by inserting the second band connected to the long rod into the through hole, and clamping a tubular tissue between the two rods, A gut clamper characterized in that a pair of spiral members are provided on each side surface of the rod-shaped body.

2. 2. The gut clamper according to claim 1, wherein the pair of spiral members have spiral shapes with different winding directions.

3. 2. The gut clamper according to claim 1, wherein the longitudinal length of the helical member is greater than or equal to 1 / 2 and less than 1 / 1 of the longitudinal length of the rod-shaped body.

4. 4. The gut clamper according to claim 1, wherein the spiral member is a metal spring member.

5. The surface of the rod-shaped body is covered with a coating made of a flexible resin, 2. The gut clamper of claim 1, wherein the helical member is provided to further cover the covering.

6. 6. The gut clamper according to claim 5, wherein the two strips, the portion where the rod-shaped body is connected, and the covering body are integrally molded using a soft, flexible resin.

7. 7. A gut clamper as claimed in any one of claims 1 to 3, 5 and 6, characterized in that the spiral member is provided with protective covers covering each end thereof.

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