US 11,806,898 B2
Methods for increasing a retention force between a polymeric scaffold and a delivery balloon
Lily Ayo Roberts, San Francisco, CA (US); Sean A. McNiven, San Francisco, CA (US); Kathleen Yan, Cupertino, CA (US); Boyd V. Knott, Menifee, CA (US); Jeremy B. Beer, Mountain View, CA (US); and Mark C. Johnson, Murrieta, CA (US)
Assigned to Abbott Cardiovascular Systems Inc., Santa Clara, CA (US)
Filed by Abbott Cardiovascular Systems Inc., Santa Clara, CA (US)
Filed on Jun. 7, 2022, as Appl. No. 17/834,872.
Application 17/834,872 is a continuation of application No. 16/102,384, filed on Aug. 13, 2018, granted, now 11,376,762.
Application 16/102,384 is a continuation of application No. 14/535,246, filed on Nov. 6, 2014, granted, now 10,059,034, issued on Aug. 28, 2018.
Application 14/535,246 is a continuation of application No. 13/089,225, filed on Apr. 18, 2011, granted, now 8,961,848, issued on Feb. 24, 2015.
Prior Publication US 2022/0297351 A1, Sep. 22, 2022
Int. Cl. A61F 2/958 (2013.01); B29B 11/04 (2006.01); B29C 65/66 (2006.01); B29C 65/00 (2006.01); B29C 67/00 (2017.01); B29C 65/78 (2006.01); A61F 2/915 (2013.01); A61F 2/95 (2013.01); A61L 31/00 (2006.01); B29L 31/00 (2006.01); B29L 28/00 (2006.01); B29C 55/24 (2006.01); B29K 101/00 (2006.01)
CPC B29B 11/04 (2013.01) [A61F 2/915 (2013.01); A61F 2/958 (2013.01); A61F 2/9524 (2020.05); A61L 31/00 (2013.01); B29C 65/66 (2013.01); B29C 65/7817 (2013.01); B29C 66/532 (2013.01); B29C 66/63 (2013.01); B29C 66/71 (2013.01); B29C 66/73117 (2013.01); B29C 66/73791 (2013.01); B29C 66/91411 (2013.01); B29C 66/91945 (2013.01); B29C 66/9292 (2013.01); B29C 66/92445 (2013.01); B29C 66/92921 (2013.01); B29C 67/0014 (2013.01); A61F 2/9522 (2020.05); A61F 2002/9583 (2013.01); A61F 2250/0067 (2013.01); B29C 55/24 (2013.01); B29C 66/91421 (2013.01); B29C 66/949 (2013.01); B29C 2793/0009 (2013.01); B29K 2101/00 (2013.01); B29L 2028/00 (2013.01); B29L 2031/7534 (2013.01); B29L 2031/7543 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A method for crimping a polymer scaffold to a balloon, comprising:
using a crimping mechanism, crimping the scaffold to the balloon, including maintaining a pressure in the balloon as the scaffold diameter is being reduced in size, the crimping comprising
(a) reducing a scaffold diameter from a first diameter to a second diameter;
(b) reducing the scaffold diameter from the second diameter to a final diameter; and
(c) interrupting the reduction of the scaffold diameter during step (a) and step (b) by performing a dwell break at step (a) and step (b) during which the scaffold diameter is held constant for a dwell period of time, wherein the dwell period at step (a) and the dwell period at step (b) is the same, and wherein the reduction of the scaffold diameter from the first diameter to the final diameter is by no more than 40% reduction in diameter before each of the dwell breaks,
wherein the balloon has a first pressure during a stress relaxation period and a second pressure lower than the first pressure during step (b).