Conveying system of blood flow reconstruction stent

Abstract

The invention discloses a conveying system of a blood flow reconstruction stent. The conveying system comprises a pushing catheter, a pushing guide wire and a conveying net pipe; the pushing catheter has the freedom degree of zigzag bending and a hollow catheter cavity; the pushing guide wire is connected to the catheter cavity of the pushing catheter in a penetrating mode; the conveying net pipe is arranged on the periphery close to the far end of the pushing guide wire and has a first posture in a radial protruding shape and / or a second posture in an axial extending shape, and the outer surface of the conveying net pipe is used for protruding to abut against the stent to be opened; the far end of the conveying net pipe is connected with the far end of the pushing guide wire; the near end of the conveying net pipe is connected with the far end of the pushing catheter; the conveying net pipe can be made of nickel-titanium wires or developing wires such as platinum-tungsten wires and platinum-iridium wires; and developing points are arranged at the positions, close to the far end and the near end, of the conveying net pipe. The purpose of the conveying system is to intervene the form of the stent in time when it is found that the adherence is poor after a dense net stent is conveyed in place.

Description

technical field

[0001] The invention relates to the field of medical instruments for surgical intervention, in particular to a delivery system for a blood flow reconstruction stent. Background technique

[0002] Among the measures that need to treat hemangioma, one of the methods is to deliver the dense mesh stent to the vascular lesion site, conduct blood flow, and block the opening of the hemangioma so that the tissue growing inside the hemangioma gradually seals itself stand up.

[0003] During the delivery or release of the dense mesh stent, due to various reasons, such as careless operation or insufficient radial support when the dense mesh stent is stretched, the dense mesh stent may not adhere sufficiently to the wall In this case, not only cannot the occlusion of the port of the hemangioma be formed, but also occupy the position of the blood vessel that needs to be unblocked, promote the formation of thrombus, and there is a greater risk.

[0004] The following are...

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