Continuous acting vascular clamp

Abstract

The invention discloses a continuous acting vascular clamp. The continuous acting vascular clamp comprises an upper clamp body, a flexible body and a lower clamp body. The continuous acting vascular clamp can be freely opened or closed and can be opened to reach an included angle of 90 degrees, thus the vessel is easily aligned, and the vessel is particularly conveniently clamped and closed during minimally invasive surgery; two ends are fixed and parallel during clamping, so that the clamping force can be parallel and balanced; the clamp can be reversely buckled to be self-locked, and therefore, the vessel can be firmly closed; the clamp can be used in match with an automatic continuous acting plastic clamp, the a plurality of vessels can be continuously clamped to be closed; the clamp is prepared from an absorbable material or non-absorbable polymer synthesis material which can be implanted into a human body for a long term; due to be prepared from a biodegradable material which can be implanted into the human body for a long term, the clamp can be completely absorbed by the human body without residue after permanent vascular embolization, and therefore, the tissue adhesion or obstruction possibly caused by non-absorbable vascular clamp can be effectively avoided.

Description

Technical field [0001] The invention relates to a medical device that can be implanted in the human body for a long time, in particular to a continuous hair vessel clip that can be used to close blood vessels in surgery and minimally invasive surgery and be implanted in the body. Background technique [0002] In the current international and domestic markets, in surgery and minimally invasive surgery, the most commonly used type of ligation and closure of blood vessels and other vessels is titanium clamps, which are U-shaped titanium clamps. During the operation, the titanium clamp is conducted through the handle of the titanium clamp to close the jaws of the titanium clamp, and the opened titanium clamp is clamped and closed, thereby closing the blood vessel ligation. This kind of titanium clip is widely used clinically, and can realize continuous clip application. However, this kind of titanium clip has three shortcomings: First, the U-shaped titanium clip made of metal titani...

AI Technical Summary

Problems solved by technology

However, this titanium clip has three disadvantages: first, this U-shaped titanium clip made of metal titanium wire cannot be opened or closed freely, and it cannot be opened to an angle of 90 degrees, which is not easy to align with blood vessels, resulting in clipping closure Inconvenient blood vessels

Because the closing force point of the titanium clip is at the root, the force transmitted through the root to the front end will inevitably cause the front end and the root to close unparallel, and the force will be uneven, so that the blood vessels will not be completely ligated and closed, and bleeding will occur

Even under the action of the elastic recovery force of the clamped tissue, slippage occurs, which not only fails to close the blood vessel, but also easily slips into the body and becomes a foreign body, which easily causes tissue adhesion and obstruction in some important blood vessels and nerves.

Third, this kind of ligation clip is a titanium clip made of metal titanium wire, which is permanently left in the human body. The titanium clip is not only soft, inflexible, insulating, and heat-insulating in the human body, but also cannot be absorbed by the human body. Opaque, affecting postoperative X-ray, CT or MRI scans

This kind of biological clip has four disadvantages: first, this closed U-shaped biological clip is closed and formed in advance, and the blood vessel is tightly closed by the elastic opening of the plastic.

Cannot be opened or closed freely, especially not opened to a 90-degree angle, it is not easy to align the blood vessel, making it inconvenient to clamp and close the blood vessel

Second, this ligation clip is pre-closed and shaped, and when the blood vessel is closed, the blood vessel tissue is squeezed outward, sometimes resulting in weak closure or even slippage

Thirdly, this kind of ligation clip is closed and shaped in advance, and the force at the end also comes from the root, and there is also a non-parallel closing and unbalanced force, so that the blood vessel is not completely ligated and closed, and bleeding occurs

Fourth, and more importantly, due to structural reasons, this kind of absorbable ligation clip is a single and repeated clip application, and multiple consecutive clips cannot be applied.

[0003] Chinese invention patent application number 201110023843.X also discloses a "tissue clip", which has the following disadvantages: one, this "tissue clip" cannot be opened freely, and it is inconvenient to clamp blood vessels

Second, minimally invasive surgery cannot be performed, and the shape is complex, cumbersome, and too large

Third, one of the power sources for the closure and ligation of the tissue clips also comes from the arched roots. There is always an outward force at the roots, which will inevitably cause the closure of the tissue clips to be non-parallel and unbalanced in force, and there will always be gaps in the roots that are not closed. The gap, so that the blood vessel is not completely clamped and bleeding occurs

Fourth, since there is no continuous clamping structure, multiple continuous clamping of blood vessels cannot be performed

[0004] Chinese invention patent application number 200810028037.X also discloses a "blood vessel clip", which has the following disadvantages: First, this ligation clip cannot be opened or closed freely, and it cannot be opened to 90 degrees. horn

Third, the upper arm cannot be accurately locked and reversed with the lower arm, or the reverse buckle and self-locking fail due to insufficient elastic force, resulting in the failure of the vascular clip to close

Fourth, one of the power sources for the closure and ligation of this ligation clip also comes from the root of the arch, which always has a force to open outwards. This kind of ligation clip also has non-parallel ligation shapes and unbalanced force, so that the blood vessels are not Fully clamped closed and oozing blood

Fifth, the more important thing is that this kind of ligation clip does not have a continuous clip application structure, and it cannot realize multiple continuous automatic ligation and closure of blood vessels, which prolongs the operation time, prolongs the operation process, and increases the operation risk.

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