METHOD FOR PREPARING A MOUNT FOR DELIVERING A DETAILED AND BIOREABORABLE POLYMERIC STENT, ASSEMBLY FOR PROVIDING A DETAILED AND BIOREABORABLE VENT AND METHOD FOR PREPARING A DEGRADABLE POLYMERIC STENT AND BIOREABSORVIBLE

摘要

Polymer-based stent assembly Methods are provided for preparing a polymer-based stent assembly comprising an inflatable balloon catheter and a relaxation-related negative recoil resistant polymer-based stent. The methods comprise heating a polymer cylindrical device that is of a final predetermined shape and diameter to a temperature sufficiently above the polymer glass transition temperature (tg) and for a time sufficient to erase any previous processing memory of the polymer cylindrical device. and then abruptly cooling the polymeric cylindrical device to provide a trained polymeric cylindrical device having a final predetermined diameter and shape memory, mounting the trained cylindrical device in an inflatable balloon catheter, reducing the diameter of the heat-trained cylindrical device to a temperature at or slightly above the polymer tg while uniformly applying pressure to the outer wall surface of the cylindrical device, and then cooling the cylindrical device below the polymer tg to provide a stent assembly comprising a cat inflatable balloon ether and a trained, expandable polymeric stent disposable and stably disposed thereon. Also provided are assemblies comprising an inflatable balloon and a polymer-based stent that is substantially relaxation-related indentation releasably mounted to the balloon.