Adjustable and removable valve clamping device

Abstract

The invention relates to the field of medical instruments, in particular to an adjustable and removable valve clamping device.The valve clamping device comprises a fixing part and a spacing part, the fixing part comprises a supporting piece, an anchoring piece and a connecting piece, and the spacing part comprises a balloon body and a reducing valve which are connected; the supporting piece, the anchoring piece and the balloon body are all connected with the connecting piece. The valve clamping device disclosed by the invention can be adaptive to various anatomical structures with non-linear sizes, so that the range of indications is expanded; after the anatomical size around the mitral valve is changed after an operation, a re-intervention interface is provided, and the clamping distance and tension are adjusted, so that regurgitation caused by left ventricular reconstruction after the operation is relieved, and the treatment effect is further prolonged; the parts provide reliable clamping structures at the beginning of implantation, reflux is reduced, part of the structures can be degraded after a period of time after the operation, and space is provided for replacement and other treatment means possibly needed by long-term prognosis.

Description

technical field [0001] The invention relates to the field of medical instruments, in particular to an adjustable and removable valve clamping device. Background technique [0002] The heart contains four chambers, the right atrium (RA), right ventricle (RV), left atrium (LA) and left ventricle (LV). The pumping action of the left and right sides of the heart generally occurs simultaneously throughout the cardiac cycle. The valve that separates the atria from the ventricles is called the atrioventricular valve. The atrioventricular valve acts as a one-way valve to ensure the normal flow of blood in the heart chambers. The atrioventricular valve between the left atrium and left ventricle is the mitral valve, and the atrioventricular valve between the right atrium and right ventricle is the tricuspid valve. The pulmonary valve directs blood flow to the pulmonary artery, and from there to the lungs; blood returns to the left atrium through the pulmonary vein. The aortic valve...

AI Technical Summary

Problems solved by technology

[0008] 1. Due to the complex and diverse causes of mitral valve regurgitation, and the differences in the size of the anatomical structures near the mitral valve caused by differences in age, gender, race, and weight of patients, the existing mitral valve clamp products The size of the model is limited, so it is impossible to achieve the most matching product configuration for each patient, which will affect the surgical effect

[0009] 2. Studies have shown that after the onset of functional mitral valve regurgitation, many patients will experience symptoms of left ventricle enlargement. After mitral valve clamping, due to the relief of the regurgitation, the size of the originally dilated left ventricle will change , that is, the length of the long axis and short axis of the left ventricle, the diameter of the valve ring, and the stress and strain at the clipping of the valve leaflets will all change. This phenomenon may lead to the reappearance of regurgitation, and severe cases require surgical intervention again

In the prior art, a double-hole structure is formed after the clamp is implanted, and re-intervention with minimally invasive methods (such as transcatheter artificial valve replacement and other operations) cannot be realized

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