Covered tube shaping device and shaping method and preparation method of covered stent

Abstract

The invention provides a film-covered tube shaping device, a film-covered tube shaping method and a preparation method of a film-covered stent. The film-covered tube shaping device comprises a main tube section, at least two bifurcated tube sections and at least two branch tube sections, the main pipe section is detachably connected with the near ends of the at least two branch pipe sections; the far end of each branch pipe section is detachably connected with the near end of one branch pipe section. By means of the arrangement, the film covering pipe shaping device comprises the main pipe section, the bifurcated pipe section and the branch pipe section, the three parts can be placed into the main body section, the bifurcated section and the branch section of the bifurcated film covering pipe correspondingly, and all the parts can be matched with all the parts of the bifurcated film covering pipe correspondingly; therefore, the risk that the forked film-covered pipe is torn in the shaping process is reduced, the percent of pass of the shaped forked film-covered pipe is improved, the difficulty of the shaping procedure is reduced, and the production loss and the production cost are reduced.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to a film-covered tube shaping device and shaping method, and a preparation method of a covered stent. Background technique [0002] In recent years, stent grafts have become the mainstream product of artificial blood vessels, mainly used to treat diseases such as aortic dissection and aneurysm. The covered stent mainly includes a metal stent and a covering, the covering is mainly used to block blood, and the metal stent is mainly used to support the covering to maintain its shape. The material of the film is mainly PTFE and polyester. The covering on the traditional covered stent is generally a covered tube formed by suturing a flat covering, which has the following defects: a large amount of water seeps at the suture, which reduces the strength of the covered tube; the suturing is mainly done by hand, The production efficiency is low, and even the stitching failure causes the prod...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a device and method for setting the shape of the covered tube, and a method for preparing the covered stent, so as to solve the problem that the setting process of the bifurcated coated tube is difficult and the bifurcated coated tube is easy to tear. , the problem of low pass rate

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