A porta-clog

Abstract

The utility model discloses a kind of hepatic portal obstruction belts, belong to liver operation instrument technical field.The hepatic portal obstruction belt includes obstruction band and lock catch lever, obstruction band is annular belt, and it is made of elastic material, first hole body is equipped on the stem of lock catch lever, obstruction band passes through the first hole body on lock catch lever, and obstruction band is extruded by the inner wall of first hole body.According to the above design, after the end of obstruction band is wound around a circle of hepatic portal, make lock catch lever pass through, then move lock catch lever, hepatic portal can be blocked immediately.Compared with vascular forceps, rubber tube and other instruments, the obstruction belt is blocked by obstruction band and lock catch lever to hepatic portal, on the one hand, it will not cause damage to hepatic portal and surrounding tissue, on the other hand, it is almost not loose after forming obstruction, and the blocking effect is better, and simultaneously, tightness is easy to control, and convenient to operate.

Description

Technical Field

[0001] This utility model relates to the field of liver surgical instruments, and in particular to a hepatic hilum blocking band. Background Technology

[0002] In liver surgery, traditional methods of hepatic hilum occlusion often involve directly clamping the blood vessels and bile ducts at the hepatic hilum with vascular clamps. While this method achieves hepatic hilum occlusion, it presents several problems: uneven pressure on the blood vessels and bile ducts during clamping can easily cause local tissue damage (especially with prolonged occlusion, which may lead to endothelial damage and postoperative complications such as thrombosis); during the procedure, the vascular clamps may accidentally loosen, affecting the occlusion effect, requiring constant vigilance from the assistant and increasing the workload and difficulty of the surgical team. Some surgeries use rubber tubing to ligate the hepatic hilum. However, the elasticity of the rubber tubing is difficult to control precisely, and the tightness of the ligation is hard to determine. During ligation, surrounding tissues and organs are easily injured, and adjusting the occlusion state during surgery is inconvenient, potentially further aggravating damage to surrounding tissues. Utility Model Content

[0003] The purpose of this invention is to provide a hepatic hilum blocking band that addresses the current state of technology. On the one hand, it will not damage the hepatic hilum and surrounding tissues; on the other hand, once the band is formed, it will hardly loosen, resulting in a better blocking effect. At the same time, the tightness is easy to control and the operation is convenient.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A hepatic hilum occlusion band includes an occlusion band and a locking rod; The blocking band is a ring-shaped band and is made of elastic material; The locking rod has a first hole through which the rod body passes, and the blocking strap passes through the first hole on the locking rod, and the blocking strap is squeezed by the inner wall of the first hole.

[0005] Furthermore, it also includes a locking pin, which is made of a flexible material; The locking rod has a second hole that extends through the first hole, and the locking pin is inserted into the second hole and is pressed by the inner wall of the second hole.

[0006] Furthermore, the front end of the locking pin is provided with a first flange.

[0007] Furthermore, the first hole is a rectangular hole structure, and the second hole penetrates into the first hole through one of its inner walls.

[0008] Furthermore, the end of the locking pin is provided with a second flange.

[0009] Furthermore, the second hole is a circular hole structure, and the locking pin is a cylindrical structure.

[0010] Furthermore, the locking pin is made of silicone material.

[0011] Furthermore, the locking rod has a cylindrical structure, and both ends of it are hemispherical structures.

[0012] Furthermore, the blocking band is made of polytetrafluoroethylene material.

[0013] Furthermore, the locking rod is made of stainless steel.

[0014] The beneficial effects of this utility model are as follows: This invention provides a hepatic hilum blocking band. One end of the blocking band is wrapped around the hepatic hilum, and a locking rod is passed through it. Moving the locking rod then blocks the hepatic hilum. Compared to instruments such as vascular clamps and rubber tubing, this blocking band, through the cooperation of the blocking band and locking rod, blocks the hepatic hilum. On the one hand, it does not cause damage to the hepatic hilum and surrounding tissues; on the other hand, once the blockage is formed, it is almost impossible to loosen, resulting in a better blocking effect. Furthermore, the tightness is easy to control, making the operation convenient. Attached Figure Description

[0015] Figure 1 This is a perspective view of a hepatic hilum blocking band according to the present invention; Figure 2 This is a perspective view of a locking rod in a hepatic hilum blocking band according to the present invention; Figure 3 This is a perspective view of a locking pin in a hepatic hilum blocking band according to this utility model.

[0016] Labeling instructions: 1. Blocking strap, 2. Locking rod, 201. First hole, 202. Second hole, 3. Locking pin, 301. First flange, 302. Second flange. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings.

[0018] Example 1: Please see Figures 1-2 As shown, a hepatic hilum occlusion band includes an occlusion band 1 and a locking rod 2.

[0019] The blocking band 1 is a ring band and it is made of elastic material.

[0020] The locking rod 2 has a first hole 201 through which its rod body passes. The blocking strap 1 passes through the first hole 201 on the locking rod 2, and the blocking strap 1 is squeezed by the inner wall of the first hole 201. That is to say, the blocking strap 1 is deformed, and there is a large friction between it and the inner wall of the first hole 201. Without human intervention, it is difficult to move relative to the locking rod 2.

[0021] Specifically, the locking rod 2 has a cylindrical structure, and both ends of it are hemispherical structures.

[0022] In this embodiment, for example, the blocking strap 1 is made of polytetrafluoroethylene (PTFE), which has good biocompatibility, low coefficient of friction, softness and toughness; the locking rod 2 is made of stainless steel, which can be repeatedly disinfected.

[0023] According to the above design, after wrapping one end of the blocking band 1 around the porta hepatis, the locking rod 2 is passed through it. Then, the locking rod 2 is moved to block the porta hepatis. This blocking band will not cause damage to the porta hepatis and surrounding tissues. On the other hand, once the block is formed, it is almost impossible to loosen, resulting in a better blocking effect. At the same time, the tightness is easy to control, making the operation convenient.

[0024] Example 2: Please see Figures 1-3 As shown, based on Embodiment 1, the blocking strip also includes a locking pin 3, which is made of an elastic material; The locking rod 2 has a second hole 202 that extends through the first hole 201. The locking pin 3 is inserted into the second hole 202 and is pressed by the inner wall of the second hole 202.

[0025] Specifically, the second hole 202 is a circular hole structure, and the locking pin 3 is a cylindrical structure.

[0026] In this embodiment, for example, the locking pin 3 is made of silicone material, which has the advantages of high temperature resistance, low temperature resistance, good biocompatibility, strong chemical stability, and environmental protection and non-toxicity.

[0027] According to the above design, the locking pin 3 is inserted into the second hole 202, so that its front end extends into the first hole 201 and squeezes the blocking strap 1. At this time, without human intervention, the blocking strap 1 is more difficult to move relative to the locking rod 2, which further consolidates the blocking effect.

[0028] It should be noted that after the locking pin 3 is pulled out of the second hole 202, both the locking rod 2 and the locking pin 3 can be completely disinfected.

[0029] In the above-mentioned technical solution, preferably, the front end of the locking pin 3 is provided with a first flange 301. When the front end of the locking pin 3 extends into the first hole 201, the first flange 301 will form a limit with the inner wall of the first hole 201. Without human intervention, the locking pin 3 is difficult to move relative to the second hole 202, further consolidating the blocking effect.

[0030] To enhance the limiting effect between the first flange 301 and the inner wall of the first hole 202, the first hole 201 is a rectangular hole structure, and the second hole 202 penetrates into the first hole 201 through one of its inner walls.

[0031] In the above-mentioned technical solution, the end of the locking pin 3 is provided with a second flange 302, which facilitates the removal of the locking pin 3 from the second hole 202.

[0032] In this embodiment, for example, the cross-sections of the first flange 301 and the second flange 302 are both semi-circular structures.

[0033] The usage process of this utility model is as follows: Preparation: Before liver surgery, the occlusion band is sterilized to ensure its sterility. Before sterilization, the occlusion band 1, locking rod 2, and locking pin 3 are separated. After sterilization, the three are reassembled. It should be noted that adding locking pin 3 does not affect the sterilization process of the occlusion band.

[0034] Hepatic portal vein occlusion: During the surgery, when it is necessary to perform hepatic hilum occlusion, the surgeon first gently wraps one end of the occlusion band 1 (defined as the free end) around the blood vessels, bile ducts and other structures at the hepatic hilum, ensuring that the occlusion band 1 is completely covered and properly positioned. Then, the locking rod 2 passes through the part of the occlusion band 1 (between the free end and the locking rod 2), and then the locking pin 3 is pulled out a distance. After that, the locking rod 2 is moved and the locking pin 3 is reset, thus occluding the hepatic hilum.

[0035] After the surgery, first pull out the locking pin 3 a certain distance, then move the locking rod 2 to loosen the blood vessels, bile ducts and other structures at the porta hepatis. Then, make the locking rod 2 pass through the blocking band 1 in the opposite direction (compared to during the surgery, the locking rod 2 passes through the blocking band 1 in the opposite direction), and the blocking band can be removed.

[0036] Of course, the above are only preferred embodiments of this utility model and are not intended to limit the scope of application of this utility model. Therefore, any equivalent changes made to the principle of this utility model should be included within the protection scope of this utility model.

Claims

1. A hepatic hilum blocking band, characterized in that: Including the blocking straps and locking levers; The blocking band is a ring-shaped band and is made of elastic material; The locking rod has a first hole through which the rod body passes, and the blocking strap passes through the first hole on the locking rod, and the blocking strap is squeezed by the inner wall of the first hole.

2. The hepatic hilum blocking band according to claim 1, characterized in that: It also includes a locking pin, which is made of a flexible material; The locking rod has a second hole that extends through the first hole, and the locking pin is inserted into the second hole and is pressed by the inner wall of the second hole.

3. The hepatic hilum blocking band according to claim 2, characterized in that: The locking pin has a first flange at its front end.

4. The hepatic hilum blocking band according to claim 3, characterized in that: The first hole is a rectangular hole structure, and the second hole penetrates into the first hole through one of its inner walls.

5. The hepatic hilum blocking band according to claim 2, characterized in that: The locking pin has a second flange at its end.

6. A hepatic hilum blocking band according to any one of claims 2 to 5, characterized in that: The second hole is a circular hole structure, and the locking pin is a cylindrical structure.

7. A hepatic hilum blocking band according to any one of claims 2 to 5, characterized in that: The locking pin is made of silicone material.

8. The hepatic hilum blocking band according to claim 1, characterized in that: The locking rod has a cylindrical structure, and both ends of it are hemispherical structures.

9. A hepatic hilum blocking band according to claim 1 or 8, characterized in that: The blocking band is made of polytetrafluoroethylene.

10. A hepatic hilum blocking band according to claim 1 or 8, characterized in that: The locking rod is made of stainless steel.

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