Patent ID: 9724219
Date: 2017-08-08
CPC Classifications: A61F,A61M,B23P,Y10T

Claim:
1. A method for crimping, comprising: using a crimping device comprising jaws forming an iris, and crimping a polymeric scaffold to a balloon, the scaffold having an outer diameter and prior to crimping the scaffold has a pre-crimp outer diameter, the crimping including: heating the scaffold to an elevated temperature; performing a first crimping of the scaffold to the balloon while a first pressure is maintained in the balloon, the first crimping including reducing the scaffold outer diameter from the pre-crimp outer diameter to between 45% to 55% of the pre-crimp outer diameter; deflating the balloon while the outer diameter is between 45% to 55% of the pre-crimp outer diameter; and while the balloon is deflated, performing a second crimping including reducing the scaffold outer diameter from the between 45% to 55% of the pre-crimp outer diameter to a final outer diameter, performing a final dwell, and removing the scaffold from the crimping device.