Locking nail for locking suture and interventional remote suture locking device

Abstract

The invention provides a locking nail for locking a suture. The locking nail comprises a locking part; the locking nail is provided with a threading cavity for threading the suture; the threading cavity penetrates through the locking part; the threading cavity comprises a first inner cavity section located at the locking part; and the surface roughness range of the inner circumferential surface ofthe first inner cavity section is 0.1 micrometer to 2.5 micrometers. By controlling the surface roughness of the inner circumferential surface of the locking part, the locking force of the suture locked in the first inner cavity section of the locking nail can be proper; the locking force requirement is met; furthermore, damage and breakage caused by excessive extrusion of the suture also can beavoided; and furthermore, the friction between the suture and the inner circumferential surface of the second inner cavity section is not easy to abrade the suture, so that the suture can be preventedfrom being damaged. The invention further provides an interventional remote suture locking device using the locking nail.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a locking nail for locking sutures and an interventional remote suture locking device using the locking nail. Background technique [0002] The mitral valve is a one-way valve located between the left atrium (abbreviation: LA) and the left ventricle (abbreviation: LV) of the heart. A normal and healthy mitral valve can control blood flow from the left atrium to the left ventricle while preventing blood flow from the left The ventricles flow to the left atrium. The mitral valve consists of a pair of leaflets, called the anterior leaflet and the posterior leaflet. When the left ventricle is in a diastolic state, the anterior leaflet and the posterior leaflet are in an open state, and blood flows from the left atrium to the left ventricle; when the left ventricle is in a systolic state, When the edges of the anterior and posterior leaflets meet, the mitral valve closes comp...

AI Technical Summary

Problems solved by technology

However, after the locking nail fixes the suture, because the heart is always performing a strong contraction movement, the suture and the locking nail are also pulled accordingly. If the locking force between the locking nail and the suture is insufficient or locked Excessive force may cause suture breakage, loosening or locking nail slipping, which not only affects the operation effect, but even endangers the life of the patient in severe cases

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