RADIATION AND RADIOCHEMICALLY STERILIZED FIBER-REINFORCED, COMPOSITE URINOGENITAL STENTS

摘要

A radiation sterilized, multi-component, absorbable/disintegratable urinogenital stent, such as an endoureteral stent comprising a load-bearing, radiopaque central coil, said coil comprising an absorbable polyester/inorganic radiopaque hybrid composition, said coil being shrouded with a knitted mesh comprising an absorbable multifilament yarn, to provide a knitted core, said knitted core being impregnated with a polymer matrix comprising an absorbable, segmented, polyaxial copolyester and a polyethylene glycol additive, and said stent being sterilized treated with high-energy radiation at a dose between 25 and 40 kGy.