Tissue vascular clamp capable of being decomposed by body fluid

Abstract

The invention provides a tissue vascular clamp capable of being decomposed by body fluid. The tissue vascular clamp is made from magnesium-based metal, consists of a primary arm, a self-locking arm, a secondary arm, wherein one end of the primary arm is connected with one end of the secondary arm to form a V-shaped or U-shaped structure; one end of the primary arm is connected with the self-locking arm with an included angle w larger than 80 degrees and smaller than 110 degrees; self-locking devices which are matched with one another are arranged at the other ends of the self-locking arm and the secondary arm. The tissue vascular clamp capable of being decomposed by body fluid provided by the invention is strong in clamping capacity, not prone to drop, can be completely degraded in the body to release trace elements and locally antibacterial, is small in tissue reaction, and does not cause tissue adhesion or obstruction.

Description

technical field [0001] The invention relates to a medical metal clip, in particular to a body fluid-degradable tissue blood vessel clip used in surgery. Background technique [0002] In the prior art, metal titanium clips, usually U-shaped titanium clips, are still the most used in the ligation and closure of surgical blood vessels, other blood vessels, and tissues. In clinical use, use special surgical forceps to insert the titanium clip into the jaws of the surgical forceps, and then release it, that is, clamp the jaws of the surgical forceps, and then withdraw from the surgical forceps. The U-shaped titanium clip will tighten the tissue to be closed. Clamp together. This titanium clip has been widely used clinically because of its simple use and definite curative effect. However, in some cases, after the U-shaped titanium center is deformed, under the action of the elastic recovery force of the clamped tissue, slippage occurs, which not only fails to close the clamped t...

AI Technical Summary

Problems solved by technology

Absorbable vascular closure clips from Johnson & Johnson tend to soften rapidly when exposed to water (including blood, body cavity fluid, etc.), and the clamping force is not strong

The absorbable blood vessel closure clip produced by Tyco Company of the United States will squeeze the tissue outward when the clip is completely closed, resulting in an unstable closure. It is often powerless for hardened ducts such as hardened cystic ducts, and sometimes even breaks.

CN1954781A discloses an absorbable tissue clip composed of polymer materials, but like other polymer materials, it is also troubled by the phenomena of water softening, weak clamping ability, and easy falling off.

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