Locally reinforced tubular fabric covering film used for in-situ window opening and preparation method thereof

Abstract

The invention provides a locally reinforced tubular fabric covering film used for in situ window opening and a preparation method thereof. The locally reinforced tubular fabric covering film used for in situ window opening is characterized by comprising a tubular fabric covering film body, the tubular fabric covering film body is composed of a full-open window region and a fundamental region, and the full-open window region is composed of a non-reinforcement structural domain and a locally reinforced structural domain surrounding the non-reinforcement structural domain; the maximum tearing strength of the fabric texture of the locally reinforced structural domain is larger than that of the fabric texture of the non-reinforcement structural domain. By selecting different kinds of fabric texture, the operability of an in-situ window opening operation is reinforced, the same time, tearing of a window-opening hole is effectively prevented, and the durability is improved. After weaving is completed, the fabric covering film is subjected to washing, drying, heat setting and other subsequent processes, and finally the locally reinforced tubular fabric covering film used for in situ window opening is prepared.

Description

technical field [0001] The invention relates to a partially reinforced tubular fabric covering for in-situ fenestration and its preparation method, especially for the integrated textile micro-molding technology and total molding, which are based on endovascular repair and in-situ fenestration The invention relates to weaving a membrane stent for in-situ fenestration to locally reinforce a tubular fabric membrane, which belongs to the technical field of biomedical textile preparation. Background technique [0002] The covered stent has become the key medical device for endovascular repair of aortic aneurysms, and new products emerge in an endless stream. Universal or custom fenestrated stent grafts developed for complex aneurysms. However, the study found that there are two outstanding problems in the application of fenestrated stent-grafts: one is that the general-purpose fenestrated stent-graft has poor adaptability to patients with different anatomical shapes of tumors, s...

AI Technical Summary

Problems solved by technology

However, the study found that there are two outstanding problems in the application of fenestrated stent-grafts: one is that the general-purpose fenestrated stent-graft has poor adaptability to patients with different anatomical shapes of tumors, so it cannot be widely used; The nearly 3-4 week customization cycle of window covered stents greatly limits the timeliness of the operation, and cannot be applied to emergency surgical treatment of sudden aortic trauma or tumor rupture

Although this patent solves the unfavorable factors caused by the secondary manual processing, in the non-situ fenestration area, due to the addition of metal wires, the rigidity of the vascular stent is increased, which is not conducive to its delivery during the operation and in vivo contact with the stent. Matching of curved aorta morphology

Therefore, there are substantial differences between the above-mentioned patent in terms of fabric structure, molding process, and raw material selection, and the structure design and preparation technology of this patent's in-situ fenestration with a membrane stent that partially reinforces the tubular fabric membrane.

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