Anchoring device for annuloplasty rings and anchoring method thereof

Abstract

The invention discloses an anchoring device for annuloplasty rings and an anchoring method thereof. The anchoring device includes, in successive connection, an anchoring member, a penetrating member and a locking member; the anchoring member is provided with a sliding stretching part and pricking needles, and the pricking needles can be slidely pricked into heart tissue through the sliding of thestretching part; an annuloplasty ring sleeves the penetrating member; and the locking member is used for positioning the annuloplasty ring. The anchoring device is stable and reliable in structure, and convenient and fast in operation; and through the anchoring device, the annuloplasty ring can be firmly and reliably fixed on the heart tissue, so that good effect on repairing cardiac valves can beachieved, and trauma to the heart tissue can be reduced.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to an anchoring device for an annuloplasty ring and an anchoring method thereof. Background technique [0002] As we all know, the human heart has four valves, the mitral valve for connecting the left ventricle and the left atrium, the tricuspid valve for connecting the right ventricle and the right atrium, the aortic valve for connecting the left ventricle and the aorta, and the The pulmonary valve, which connects the right ventricle to the pulmonary artery, acts as a one-way valve to ensure blood flow from one direction to the other, and attaches directly or indirectly to the annulus of the dense fibrous rings of atrial and ventricular muscle fibers . [0003] Dilation of the mitral annulus can result from a variety of etiologies, such as myocardial failure, and the valve may be defective at birth or acquired due to disease. Dilation of the mitral annulus leads directly ...

AI Technical Summary

Problems solved by technology

Dilation of the mitral annulus leads directly to valve laxity, that is, the line of commissure between the anterior and posterior leaflets is not tight

The solution of using the helical structure for anchoring is relatively laborious when screwing into the tissue, especially when the anchor is installed on the tissue through minimally invasive surgery or transcatheter surgery, the operability is poor, and the use of the helical structure causes greater trauma to the tissue. And with the movement of the valve ring, the helical structure has the possibility of reversible rotation and even detachment from the tissue, which will eventually affect the repair effect

The anchoring scheme using the fork-shaped body structure has a relatively large resistance when the fork-shaped body enters the tissue, and the large radially outward expansion area of ​​the fork-shaped body is likely to cause a large amount of tissue deformation (research shows that the amount of deformation can cause the annulus to re-establish). expansion), large trauma area

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