Verfahren zur Herstellung intraluminaler Stents aus bioresorbierbarem Polymermaterial

摘要

Production of intravascular stents from a bio-resorbable polymer involves: (a) preparation of a viscous solution of poly-beta-hydroxybutyric acid as polymer, in a solvent, (b) successive application of the solution, in layers and in several steps, to a positive mould, with separation of the polymer by evaporation of the solvent and (partial) solution of the previous layer, to form an unfinished stent of uniform polymer structure, (c) removal of the unfinished stent from the mould, and (d) processing to the finished stent.