Instrument for placing mitral valve artificial tendinous cord

Abstract

The invention provides an instrument for placing a mitral valve artificial tendinous cord, which comprises a tendinous cord sewing machine; the tendinous cord sewing machine comprises a handle, an upper clamp, a lower clamp, a suture needle, a push rod, a suture needle fixing device, a suture needle grasping device, a lower clamp supporting rod and an upper clamp supporting rod; the upper clamp isconnected with one end of the upper clamp support rod, and the lower clamp is connected with one end of the lower clamp support rod. The handle is arranged on the other end of the upper clamp supportrod and the lower clamp support rod. One end of the push rod is connected to the suture needle fixing device, which is installed in the upper clamp. There are two suture needles. One end of the suture needle is connected to the suture needle fixing device, and the other end of the suture needle is corresponding to the groove of one end of the suture needle grasping device. The other end of the suture needle grasping device is connected to a grab handle. The instrument for placing a mitral valve artificial tendinous cord prevents the mitral valve lobe prolapse of chordae tendineae rupture fromentering the left atrium, achieves the purpose of treating the mitral valve regurgitation of chordae tendineae rupture by minimally invasive technology, and improves the reliability of minimally invasive surgery and the stability of artificial chordae tendineae after surgery.

Description

technical field [0001] The invention belongs to the field of medical devices, and in particular relates to a push-pin type double-wire isopore tear-resistant mitral valve artificial chord placement device. Background technique [0002] Human heart and valve structures such as figure 1 As shown, the mitral valve 2 is located between the left atrium 1 and the left ventricle 3, and controls the unidirectional flow of blood from the left atrium 1 into the left ventricle 3. The structure of mitral valve 2 is as follows figure 2 As shown, mitral valve 2 is a complex structure consisting of annulus 2.1, anterior leaflet 2.2, posterior leaflet 2.3, chordae 2.4, papillary muscle 2.5 and myocardium on the left ventricular wall. The anterior leaflet 2.2 and the posterior leaflet 2.3 are attached to the annulus 2.1. The annulus 2.1 is an internal tissue structure connecting the anterior leaflet 2.2, the posterior leaflet 2.3 and the wall of the left ventricle. One end of the chorda...

AI Technical Summary

Problems solved by technology

However, this invention requires double needles to pass through the valve leaflet at the same time, and at the same time hook two artificial chordae from one side of the valve leaflet to the other side of the valve leaflet, which makes the operation more difficult.

In addition, when hooking the artificial chordae to pass through the valve leaflet, double threads need to pass through the leaflet perforation, which increases the diameter of the perforation on the leaflet.

These issues reduce the reliability of this minimally invasive procedure and the stability of the artificial chord after surgery

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