Aortic valve limiting device

Abstract

The invention relates to the field of cardiovascular medical treatment, and particularly discloses an aortic valve limiting device. The aortic valve limiting device comprises a stent used for being placed in a left ventricular outflow tract and a fixing piece connected to the stent and used for positioning the stent in the left ventricular outflow tract. The stent is of a communicated structure penetrating in the blood flow direction, and a supporting part used for making contact with the bottom end of an aortic valve and supporting the aortic valve is arranged on the upper end face of the stent. According to the device, the function of the prolapsed aortic valve can be effectively recovered on the premise of reducing wounds. Compared with the existing valve replacement or aortic valve forming operation, the implementation of the invention is beneficial to effectively recovering the function of the prolapsed aortic valve on the premise of reducing wounds, and meanwhile, the operation safety and the operation efficiency are also improved, and the treatment cost is reduced. The method meets the social needs, has very high practicability and is beneficial to promoting the further development of cardiovascular medical technologies.

Description

Technical field[0001]The invention relates to the field of cardiovascular medical treatment, in particular to an aortic valve limiting device.Background technique[0002]Heart valves are the valves between the atria and the ventricles or between the ventricles and the arteries. Valves play a key role in the heart's never-stop blood circulation, preventing blood from returning to the atrium (atrioventricular valve) or ventricle (semilunar valve) that has just left. . The aortic valve is located between the left ventricle and the aorta. It is generally composed of three semilunar valves. The attachment edge of the valve leaflet crosses the ventricle-arterial junction in an arc shape; when the ventricle contracts, the blood flow rushes upwards to push the aortic valve The leaflets are pushed away from the center of the aortic lumen; when the ventricle is in diastole, the leaflets passively descend into the center of the aortic lumen; when the valve shape is normal, the three leaflets are...

AI Technical Summary

Problems solved by technology

[0004] Aortic valve insufficiency and regurgitation caused by aortic valve prolapse lead to increased arterial pressure, coronary insufficiency, increased left ventricular preload, left ventricular dilation and heart failure, which are absolute indications for surgery; At present, valve replacement (replacing biological valve or mechanical valve) is widely used in surgical operations, and patients face the risk of open chest surgery and postoperative anticoagulation, or aortic valvuloplasty for treatment (patent CN111481323A discloses an aortic Angioplasty ring), but the current success rate is still not high, and most patients need to undergo surgery again; the trauma caused by the above-mentioned surgery is more serious for elderly patients, and the risk of surgery is greater

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