Implant and assembly for forming implant

Abstract

The invention relates to the field of medical instruments, in particular to an implant and an assembly for forming the implant, the implant comprises an artificial chordae tendineae and a papillary muscle anchoring element, the artificial chordae tendineae comprises an artificial chordae tendineae body and a self-tightening structure formed at one end of the artificial chordae tendineae body and used for anchoring valve leaflet, and the other end of the artificial chordae tendineae body is connected with the papillary muscle anchoring element. According to the implant, the valve leaflet fixing mode of an artificial chordae tendineae prosthesis is optimized, fixation of the artificial chordae tendineae and the valve leaflet can be completed through an interventional operation, thoracotomy is not needed, operation trauma is small, and patient recovery is fast. A self-tightening thread knot does not shift, friction between the thread knot and the valve leaflet is reduced, the anchoring wound surface is small, damage to the original valve leaflet is small, the anchoring effect is good, and the backflow treatment effect is stable; meanwhile, rapid endothelialization of the implant is facilitated, the endothelialization effect is better, and the anatomical morphology of the valve leaflet cannot be changed.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to an implant and components used to form the implant. Background technique [0002] The mitral valve is a complex tissue structure between the left atrium (abbreviated as LA) and the left ventricle (abbreviated as LV). composition. The mitral valve ensures that blood can only flow from the left atrium to the left ventricle, not the other way around. A normal, healthy mitral valve has multiple chordae that connect at one end to the edge of the leaflet and at the other end to the papillary muscle in the wall of the ventricle. When the left ventricle is in diastole, the front and rear leaflets of the mitral valve are opened, the chordae are in a relaxed state, and blood flows from the left atrium to the left ventricle; Due to the pulling effect of the chordae tendineae, the valve leaflets will not flip to the atrium side due to blood pressure. Under the joint action of the leaflets a...

AI Technical Summary

Problems solved by technology

For example, the Cardiomech company designed a metal anchor. This type of anchoring method has a high surgical risk. On the one hand, the wound caused by anchor claw puncture and grasping the valve leaflet is large, which is likely to cause acute perforation of the valve leaflet. On the other hand, metal parts may be implanted cause metal allergy or immune reaction

Other problems may also occur, such as extra load on the valve leaflets, changing the surface morphology of the valve leaflets, affecting hemodynamics, etc. At the same time, metal anchors are not conducive to tissue growth and cannot form endothelialization in a short time

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