Valve clamping device

Abstract

The invention relates to the field of medical instruments, in particular to a valve clamping device. The valve clamping device comprises a control rod, a first supporting piece, a clamping piece, at least one pair of folding pieces and at least one pair of closing pieces. The folding pieces are arranged on the two sides of the control rod respectively and correspond to the closing pieces. One end of the folding piece is rotationally connected with the control rod, the other end of the folding piece is movably connected with the first supporting piece, and the first supporting piece slides on the control rod; the closing piece is connected with the folding piece; and the clamping piece is arranged between the folding piece and the control rod. The opening and closing degree, namely the opening and closing degree of the valve, of the clamping device is adjusted by automatically adjusting the opening and closing angle through blood pressure driving; therefore, the effects of reducing blood regurgitation during cardiac contraction and reducing the resistance of blood passing through the valve during cardiac diastole are achieved.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to a valve clamping device. Background technique [0002] Heart valves (aortic valve, pulmonary valve, mitral valve, tricuspid valve,) are an important part of the cardiovascular system. The heart valve plays a role similar to a one-way valve in the cardiovascular system. The blood passing through the heart valve can only pass along the flow direction of the valve, and cannot reverse the reverse flow, so that the blood in the vascular system can The blood flows in a fixed direction. [0003] Mitral regurgitation is a common valve disorder. Some of the existing techniques used to treat patients with mitral regurgitation include surgical replacement of the prosthetic valve or the natural mitral valve leaflets being stitched edge-to-edge (Alfierystitch), or the mitral valve Leaflet edge clipping, etc. [0004] At present, surgical intervention for mitral regurgitation mainly includes...

AI Technical Summary

Problems solved by technology

[0005] Surgical treatment of mitral regurgitation has the disadvantages of many complications, long recovery period, and high surgical risk

[0006] When the end portion of the mitral valve leaflet is clamped to the side of the leaflet with the catheter delivery clamp, the end portion of the mitral valve leaflet will partially overlap, and then the mitral valve will open and close under the tension of suture or clamping. Motion is somewhat restricted, resulting in greater stretching and stress on the mitral valve leaflets with a higher risk of leaflet tearing

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