Vascellum clamp

Abstract

The invention relates to a vascular clamp which is a V-shaped or U-shaped structure formed by an upper arm and a lower arm. The head of the lower arm is provided with a guide face which can generate the horizontal displacement under the vertical pressure. The head of the upper arm and the head of the lower arm are provided with self-locking structures which are matched with each other and can restrict the vertical relax movement. When a pair of appliers is closed, the upper arm and the lower arm of the vascular clamp begin to close, the head of the upper arm slides along the guide face of the head of the lower arm under the vertical pressure to generate the horizontal displacement. Under the combined effect of the restoring force resulting from the horizontal displacement of the upper arm and the lower arm and the restoring force resulting from the horizontal displacement of the pliers arms of the appliers, the self-locking structures which are matched with each other and can restrict the vertical relax movement on the head of the upper arm and the head of the lower arm slide and lock, therefore realizing the closing of the upper arm and the lower arm. The vascular clamp not only has strong clipping force, but also avoids cropping function for the organization in the closing process.

Description

technical field [0001] The invention relates to a long-term implanted medical device in the human body, in particular to a blood vessel clamp which closes blood vessels during surgery and is implanted in the body. 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 and other blood vessels. 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 deformation of the U-shaped titanium clip, under the action of the elastic recovery force of the clamped tissue, slip...

AI Technical Summary

Problems solved by technology

Johnson & Johnson's absorbable vascular closure clip (PDS Clip) is easy to soften quickly when it meets water (including blood, body cavity fluid, etc.), and the clamping force is not strong

The absorbable vascular closure clip (Lapro-Clip) produced by Tyco Company of the United States will squeeze the tissue outward when the clip is completely closed, sometimes resulting in weak closure or even slippage

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