Artificial chordae tendineae regulation device and artificial chordae tendineae regulation system

Abstract

The invention discloses an artificial chordae tendineae regulation and control device and an artificial chordae tendineae regulation and control system. The artificial chordae tendineae regulation and control device comprises a regulation and control main body piece and a hook-shaped piece, the regulation and control main body piece is an elastic self-expansion piece, the interior of the regulation and control main body piece is hollow, the far end of the regulation and control main body piece is open, and the radial size of the far end is larger than that of the near end; the hook-shaped piece comprises at least one hook-shaped structure and is used for hooking the artificial chordae tendineae; when the hook-shaped piece hooks the artificial chordae tendineae, the hook-shaped structure of the hook-shaped piece extends out of the far end of the regulation and control main body piece; after the hook-shaped piece hooks the artificial chordae tendineae, the hook-shaped piece is contained in the regulation and control main body piece and fixedly connected with the regulation and control main body piece, the hook-shaped piece pulls part of the artificial chordae tendineae to enter the regulation and control main body piece, and the far end of the regulation and control main body piece abuts against the parts, located on the two sides of the hook-shaped piece, of the artificial chordae tendineae. According to the artificial chordae tendineae regulation and control device and the artificial chordae tendineae regulation and control system, the effective length of the artificial chordae tendineae can be self-adaptively regulated in real time.

Description

technical field [0001] The present application belongs to the technical field of medical devices, and in particular, relates to an artificial chord regulation device and an artificial chord regulation system. Background technique [0002] The mitral valve is the left atrium ( figure 1 , figure 2 indicated by LA in the middle) and the left ventricle ( figure 1 , figure 2 The one-way "valve" between the LV and the left atrium allows blood to flow from the left atrium to the left ventricle. Mitral regurgitation is one of the most common heart valve diseases today, mainly due to rheumatic heart disease, mitral valve myxoid degeneration, cardiac ischemic disease, cardiomyopathy, etc. leaves, chordae tendineae ( figure 1 , figure 2 (marked by CT in the middle) and papillary muscle lesions, the leaflets of the mitral valve cannot be completely closed. When the left ventricle contracts, the impulse of blood flow will cause the leaflets to protrude into the left atrium, caus...

AI Technical Summary

Problems solved by technology

Mitral regurgitation is one of the most common heart valve diseases today, mainly due to rheumatic heart disease, mitral valve myxoid degeneration, cardiac ischemic disease, cardiomyopathy, etc. leaves, tendons ( figure 1 , figure 2 (marked by CT in the center) and papillary muscle lesions, resulting in the mitral valve leaflets can not be completely closed, when the left ventricle contracts, the impulse of the blood flow will make the leaflets protrude into the left atrium, resulting in blood regurgitation

[0004] like figure 1 As shown, one side of the medical suture as the artificial chordae x is anchored on the valve leaflet, and the other side is anchored on the papillary muscle, ventricular wall or apex; at the initial stage of artificial chordae x implantation, when the left ventricle contracts , the medical sutures are tensioned to replace the native chordae and pull the mitral valve leaflets back to their normal closed state; however, if figure 2 As shown, after the artificial chord x is implanted for a period of time, the volume of the left ventricle will gradually shrink to the normal level with the passage of time. As a result, the pulling effect on the valve leaflets is correspondingly weakened, and then mitral valve regurgitation occurs again

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