Patent ID: 9662231
Date: 2017-05-30
CPC Classifications: A61F,B29C,B29L,Y10T

Claim:
1. A method, comprising: biaxially expanding a polymer tube according to a radial expansion (RE) and axial expansion (AE) wherein the ratio RE/AE is between 400/200 and 200/200, and forming the scaffold from the biaxially-expanded tube, including forming a network of rings interconnected by links, wherein the scaffold has a pre-crimp diameter, wherein the scaffold is configured for being plastically deformed when crimped to a balloon and plastically deformed when expanded by the balloon, and wherein the scaffold attains at least 80% of the pre-crimp diameter after being crushed to 70% of the pre-crimp diameter, and wherein the scaffold exhibits a monotonically decreasing radial recoil after one hour from being plastically deformed to an expanded state by the balloon.