US 11,672,883 B2
Shape memory articles and methods for controlling properties
Richard Francis, Santa Rosa, CA (US); Brett Vegoe, Santa Rosa, CA (US); Curtis Goreham-Voss, Santa Rosa, CA (US); Dhiraj Catoor, Santa Rosa, CA (US); and Scott Robertson, San Francisco, CA (US)
Assigned to MEDTRONIC, INC., Minneapolis, MN (US)
Filed by Medtronic Inc., Minneapolis, MN (US)
Filed on Apr. 27, 2018, as Appl. No. 15/965,284.
Claims priority of provisional application 62/529,121, filed on Jul. 6, 2017.
Claims priority of provisional application 62/491,423, filed on Apr. 28, 2017.
Prior Publication US 2018/0311406 A1, Nov. 1, 2018
Int. Cl. A61L 27/04 (2006.01); C22F 1/10 (2006.01); C22C 1/02 (2006.01); A61L 27/06 (2006.01); C22C 19/03 (2006.01); C22C 14/00 (2006.01); C22F 1/00 (2006.01); A61L 27/50 (2006.01); A61F 2/24 (2006.01); A61F 2/86 (2013.01); A61F 2/91 (2013.01)
CPC A61L 27/047 (2013.01) [A61L 27/06 (2013.01); A61L 27/50 (2013.01); C22C 1/02 (2013.01); C22C 14/00 (2013.01); C22C 19/03 (2013.01); C22F 1/006 (2013.01); C22F 1/10 (2013.01); A61F 2/2418 (2013.01); A61F 2/86 (2013.01); A61F 2/91 (2013.01); A61F 2210/0014 (2013.01); A61F 2210/0019 (2013.01); A61F 2240/001 (2013.01); A61L 2400/16 (2013.01); A61L 2430/20 (2013.01); C21D 2201/01 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A method for enhancing displacement-controlled fatigue performance, increasing ductility or decreasing modulus of a structural element of an implantable medical device, wherein the structural element comprises a shape memory alloy material, the method comprising:
a first step consisting essentially of: heating the structural element at a temperature between 580° C. and 620° C. for a time between 30 seconds and 500 minutes to produce a heat-treated structural element; and
a second step comprising: shape setting the heat-treated structural element after the structural element is heated.