Guide steel wire for hybrid therapy of muscular ventricular septal defect and positioning and conveying device of guide steel wire

Abstract

The invention relates to a guide steel wire for the hybrid therapy of a muscular ventricular septal defect and a positioning and conveying device of the guide steel wire. The positioning and conveyingdevice comprises a detecting sheathing canal, the guide steel wire and a steel wire ring part catcher. The detecting sheathing canal is hollow and has an obtuse head part. The head end of the guide steel wire is bent into a water-drop-shaped ring part. The steel wire ring part catcher is composed of a handle and a ring hook. The ring hook is located at the position, close to the top end, in the handle. The positioning and conveying device has the advantages that the L-shaped detecting sheathing canal with the obtuse head part conveniently conducts detection on the muscular ventricular septaldefect at the deep part of a ventricular cavity from a ventriculus dexter; the guide steel wire can directly arrive at and penetrate through the muscular ventricular septal defect along a canal cavityof the detecting sheathing canal, and through the design of the water-drop-shaped ring of the head part, it is avoided that the head end of the guide steel wire enters a ventriculus sinister and accidentally injures a ventricular wall or valve tissue; the top end of the steel wire ring part catcher is obtuse, and the accidental injuries caused to valves, chordae tendineae, musculi papillares andventricular walls when the guide steel wire goes deep into the ventriculus sinister are reduced; the ring part of the guide steel wire can be conveniently caught by the ring hook, the guide steel wireis pulled out of a heart to be fixed, and a stable steel wire guide route is established.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a guide wire for mosaic treatment of muscular ventricular septal defect and its positioning and delivery device. Background technique [0002] Ventricular septal defect is one of the most common congenital heart disease clinically. A normal heart consists of four chambers: left atrium, left ventricle, right atrium, and right ventricle. The left atrium and left ventricle are connected by the left atrioventricular valve - the mitral valve, and the right atrium and right ventricle are connected by the right atrioventricular valve - the tricuspid valve. There is an intact interatrial septum between the left and right atrium, and between the left and right ventricle there is an intact interventricular septum separating the two ventricles. Under normal circumstances, the left and right ventricles contain arterial blood and venous blood respectively, and because there is a com...

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Problems solved by technology

[0006] However, there is no report about the guide wire and its positioning and delivery device for the mosaic treatment of muscular ventricular septal defect of the present invention.

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