Single-window guided valve constriction system

Abstract

The invention provides a single-window guided valve constriction system. The system comprises a catheter positioning device, a conveying device, an anchoring device and a tightening line, wherein theanchoring device comprises a plurality of anchoring parts; the catheter positioning device comprises a positioning tube, a window communicated with an inner cavity of the positioning tube is formed inthe side wall of the far end of the positioning tube, and the positioning tube moves to enable the window to face different positions of a targeting part; the conveying device conveys the plurality of anchoring parts to the different positions of the targeting part through the windows along the positioning tube; the anchoring device is used for sequentially fixing the anchoring parts penetratingthrough the window at the different positions of the targeting part; and the tightening line is used for serially connecting and tightening the plurality of anchoring parts fixed at the different positions of the targeting part, so that the perimeter of the targeting part is reduced. According to the single-window-guided valve contracting ring system, the positioning pipe moves to enable the window to face the different positions of the targeting part, then the anchoring parts are fixed to the different positions of the targeting part, then the targeting part is tightened through the tightening line, and therefore the effect of shortening the perimeter of the targeting part is achieved.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to a single-window-guided valve shrinkage ring system. Background technique [0002] Such as figure 1 As shown, the human heart is composed of the left ventricle (RV) and the right atrium (RA), and the left ventricle includes the left ventricle (LV) and the left atrium (LA). The mitral valve is a "one-way valve" between the left atrium and left ventricle, consisting of the annulus (MVA), anterior leaflet (AML), posterior leaflet (PML), chordae (CT) and papillary muscle (PM). The annulus is between the left atrium and the left ventricle. The anterior leaflet and the posterior leaflet are connected to the annulus. There are multiple chordae (CT) on the two leaflets, and the other end of the chordae is connected to the papillary muscle. During the beating process of the heart, the anterior and posterior leaflets of the normal mitral valve are in open and closed cyclical motions, thereb...

AI Technical Summary

Problems solved by technology

However, in the prior art, in patients with functional mitral valve regurgitation and heart failure accompanied by dilated left ventricle, the treatment effect is unsatisfactory because only the annulus is contracted and the volume of the left ventricle cannot be effectively reduced.

Images