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Thread-meshed tissue holder

A tissue clip and thread technology, applied in the field of medical devices, can solve the problems of lack of anti-migration tissue clips, limited effect, etc., and achieve the effects of suitable molecular weight and viscosity, anti-migration, and improved friction.

Pending Publication Date: 2018-05-04
广东弘和医疗器械制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the effect of the practical application of the above two anti-falling hemostatic clips is limited
[0005] In summary, the existing technology still lacks a tissue clip that can meet the anti-deviation of absorbable materials and can meet the clinical needs

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A threaded snap-in tissue clip, such as figure 1 As shown, it is molded from absorbable polymer material, including a first clamp arm 1 and a second clamp arm 2 connected by an elastic hinge 3, and the first clamp arm 1 and the second clamp arm 2 are both The arc structure and the radians match each other, the free end of the first clamping arm 1 is set as a hook 6, and the free end of the second clamping arm 2 is set as a hook groove 7 matched with the hook 6, so The outer surface of the free end of the first clamping arm 1 is provided with a first protrusion 4, and the two ends of the groove 7 are symmetrically arranged with two cylindrical second protrusions 8 about the axis of the second clamping arm 2, so that The elastic hinge 3 is provided with a hinge gap 5, and the inner walls of the first clamp arm 1 and the second clamp arm 2 are provided with threaded engagement members that can cooperate with each other, and the thread seal can be realized when the clamp ar...

Embodiment 2

[0030] This embodiment only describes the differences from Embodiment 1.

[0031] The member is provided with two rows of threaded protrusions 9 on both sides of the center line of the first clamp arm 1 along the inner wall surface of the first clamp arm 1 , and interlocking thread grooves 10 are provided on the inner wall surface of the second clamp arm 2 . Compared with one row of threads, two rows of threads have greater shearing force and greater friction, which can effectively prevent the offset of the tissue clip. The thread height of the thread protrusion 9 is 1 / 10-1 / 5 of the thickness of the first clamp arm 1; the nominal diameter of the thread is 1 / 6-1 / 3 of the width of the first clamp arm 1.

Embodiment 3

[0033] This embodiment only describes the differences from Embodiment 1.

[0034] The thread height of the thread protrusion 9 is 1 / 3 of the thickness of the first clamp arm 1; the nominal diameter of the thread is 3 / 4 of the width of the first clamp arm 1, and the thread height H and pitch P of the thread protrusion Relationship, if the thread angle is α, then H=Psinα, preferably, if the thread angle α is 60°C, then H=0.866P.

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Abstract

The invention discloses a thread-meshed tissue holder which is made of an absorbable high polymer material. The thread-meshed tissue holder comprises a first clamping arm and a second clamping arm which are connected through an elastic hinge. The first clamping arm and the second clamping arm are each of an arc-shaped structure, and the radian of the first clamping arm and the radian of the secondclamping arm are matched. The inner wall face of the first clamping arm and the inner wall face of the second clamping arm are provided with thread-meshed components. When the clamping arms are clamped, thread sealing can be realized. Through the thread meshing of the first clamping arm and the second clamping arm compared with meshing of concave-convex structures of a tissue holder in the priorart, the tissue holder is large in shearing force, friction force is greatly improved, the deviation of the tissue holder can be effectively prevented, polylactic acid with a certain shrinking percentage is selected as an absorbable material, the friction coefficient of the tissue holder is increased, and slipping resistance is increased.

Description

technical field [0001] The invention relates to a medical device, in particular to a threaded engagement tissue clip. Background technique [0002] Tissue clips, also known as vascular clips, ligation clips, and hemostatic clips, are used to clamp blood vessels and pipeline tissues in surgical operations (mainly minimally invasive laparoscopic operations). For example, it is used to clamp the cystic duct and cystic artery during cholecystectomy for patients with cholecystitis, calculous cholecystitis, and gallbladder polyps, and play the role of hemostasis and ligation and closure. The common method of early vessel or tissue ligation is needle-thread anastomosis, but needle-thread anastomosis has inevitable defects such as large vascular intima damage, complicated anastomosis operation, and long time-consuming. Therefore, since the advent of vascular clips, needle-thread anastomosis has gradually been replaced trend. The original vascular clips were mainly made of metal, s...

Claims

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Application Information

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IPC IPC(8): A61B17/122
CPCA61B17/1227A61B2017/12004
Inventor 杨习锋耿涛曾晨光曾伟澎彭芸金振华
Owner 广东弘和医疗器械制造有限公司
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