Artificial valve prosthesis with valve leaflet clamping device

Abstract

The invention relates to artificial valve prosthesis with a valve leaflet clamping device. The manual valve prosthesis comprises a bracket and an artificial valve, wherein the bracket comprises an auxiliary support clamping section and a valve sewing section; the artificial valve is fixedly connected to the valve sewing section; the auxiliary support clamping section is composed of a support bracket, a valve leaflet clamping device and an upper connection fixing section; the leaflet clamping device, the support bracket and the upper connection fixing section are integrally cut; a lower connection fixing section matched with the upper connection fixing section is arranged on the valve sewing section; the bracket is embedded and connected with the lower connection fixing section into a whole through the upper connection fixing section; one part of the valve leaflet clamping device is overlapped with the valve sewing section; the overlapped part is tightly attached to the outer surface of the valve sewing section in a natural state; a bump which protrudes outwards along the radial direction is arranged on a skeleton structure of the valve sewing section in the overlapped region; and a bending section which bends towards the axis direction of the bracket along the radial direction of the bracket is arranged on the valve leaflet clamping device or the support bracket or the upper connection fixing section.

Description

Technical field: [0001] The invention belongs to the field of medical devices, and in particular relates to an artificial valve prosthesis with a leaflet clamping device. Background technique: [0002] Aortic stenosis is mainly caused by sequelae of rheumatic fever, congenital aortic valve structural abnormalities, or senile aortic valve calcification. Patients are asymptomatic during the compensation period, but most patients with severe aortic stenosis have symptoms of fatigue, dyspnea (exertional or paroxysmal), angina pectoris, dizziness or syncope, and even sudden death. [0003] Aortic valve regurgitation means that the aortic valve opens when the ventricle contracts, the blood flow in the left ventricle enters the aorta and shoots to the whole body, and closes when the ventricle relaxes, preventing the blood in the aorta from returning to the left ventricle. In valvular insufficiency, the aortic valve does not close tightly during diastole, causing backflow of blood ...

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