Enhanced adsorbable lumina bracket and preparation method thereof

Abstract

The invention discloses an enhanced adsorbable lumina bracket and a preparation method thereof. The enhanced adsorbable lumina bracket is made from a medical nanofiber enhanced composite, and the nanofiber enhanced composite consists of a base material and nanometer short fibers, wherein the nanometer short fibers can maintain a crystal form and is uniformly dispersed to the base material. The lumina bracket is prepared from a nanofiber enhanced material. The material adopts polycaprolactone, poly(trimethylene carbonate) and polydioxanone as flexible base materials, and adopts polylactide or polyglycolide acid short fibers as support materials, so that the support strength is improved, the bracket elasticity is improved, contraction and transportation are easy to realize, and clinical implantation is convenient. The made bracket has enough support properties and reserves flexibility. After being used, the bracket is good in jointing degree with tissue, and is high in strength. Repair and regeneration of self lumina tissue of human bodies are facilitated, and the degradation speed is moderate. Clinical operation of the bracket is facilitated, and the prospective treatment effect isachieved.

Description

technical field [0001] The invention relates to the technical field of luminal stents, in particular to an enhanced absorbable luminal stent and a preparation method thereof. Background technique [0002] The stenosis or obstruction of the human lumen due to trauma, disease, surgery, etc. usually affects the function of tissues and organs, and in severe cases will threaten the life and health of patients. Implanting luminal stents into narrow or obstructed parts is an ideal treatment for such diseases It is beneficial to lumen reconstruction and reduces the incidence of complications. Commonly used luminal stents include esophageal stents, intestinal stents, urethral stents, biliary stents, and nasal cavity stents; existing luminal stent products are mostly made of metal, such as 316L Stainless steel, nickel-titanium alloy, cobalt-chromium alloy, etc. are made of metal weaving or carving. This type of stent has high mechanical strength, good toughness, and is easy to compres...

AI Technical Summary

Problems solved by technology

For example, materials with high mechanical strength, such as polylactic acid and polyglycolide, have insufficient flexibility and cannot be fully compressed after being made into a stent, which is not conducive to surgical operation and stent implantation. Tight attachment is not conducive to the repair and regeneration of the human body's own luminal tissue; and materials with good flexibility, such as polydioxanone, polytrimethylene carbonate, etc., have insufficient support strength after being made into a stent, especially when they degrade During the process, the strength of the stent drops too fast, causing the stent to fall off or break prematurely, endangering the health of the patient.

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