Biodegradable bracket and preparation method thereof

Abstract

The invention discloses a biodegradable bracket; the bracket comprises a reticular bracket body formed by weaving degradable silky material, and further comprises a micro-spring ring formed by winding metal wires; the degradable silky material penetrates in the inner hole of the micro-spring ring and forms a whole with the micro-spring ring. A preparation method of the biodegradable bracket comprises the following steps: (1), winding metal wires into a micro-spring ring through a spring winding machine; (2), putting degradable silky material longer than the micro-spring ring through the inner hole of the micro-spring ring to form a whole; (3), winding the degradable silky material to weave the biodegradable bracket; and (4), detecting the bracket and manufacturing a finished product. The biodegradable bracket has the advantage that the visibility under development of X rays as well as the flexibility and security of the bracket are improved greatly.

Description

technical field [0001] The invention belongs to the technical field of medical devices, and in particular relates to a biodegradable bracket and a preparation method thereof. Background technique [0002] Cardiovascular and cerebrovascular diseases are still the number one killer in our country, and at least 3.3 million Chinese die of coronary heart disease or cerebral apoplexy every year. Compared with drugs and surgery, vascular stent interventional therapy has become the preferred treatment because of its high efficacy and low risk. The most ideal vascular stent is to provide mechanical support to the blood vessel within a period of time when it is implanted in the patient's body, and to prevent restenosis of the blood vessel by means of the eluted drug. Afterwards, the stent slowly degrades and is fully absorbed by human tissues, and the vascular structure and diastolic function are completely restored to their natural state. Polylactic acid (PLLA) surgical sutures hav...

AI Technical Summary

Problems solved by technology

However, a problem encountered in the clinical use of this stent is that in some patients, the materials at both ends of the stent degrade quickly, so the platinum particles at both ends may dissociate into the blood vessel due to the degradation of the grooves. Blood flow into the cerebral blood vessels will cause a stroke, which will bring greater harm to the patient (even fatal)

Another disadvantage of the stent is that the structure of the stent is relatively rigid and is not suitable for use in more curved blood vessels

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