Biodegradable ureteral stent and method for manufacturing the same

Abstract

The present invention provides a degradable ureteral stent and a manufacturing method thereof, the degradable ureteral stent is a hollow tubular structure (1), has a fixing structure (2) at both ends or one end to prevent slipping, and has several outlet side holes (3) penetrating the tubular wall, and the material used is a composite material formed by at least glycolide-ε-caprolactone copolymer, ethylene oxide polymer, and medical contrast agent. The weight percentage content of glycolide in the glycolide-ε-caprolactone copolymer is 51%-58%, so that the copolymer has suitable mechanical strength and flexibility, and gradually becomes softer with the longer decomposition time. At the same time, by adding a certain percentage of ethylene oxide polymer, its tensile modulus is lower after decomposition, and it becomes more flexible and smooth, so that the decomposition fragments are less likely to clog and are easily discharged outside the body, which is more suitable for the manufacture of degradable ureteral.

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