US 12,004,971 B2
Multi path biomimetic and variable stiffness ankle system and related methods
Elliott J. Rouse, Ann Arbor, MI (US); Maxwell Shepherd, Evanston, IL (US); Hashim Quraishi, Ann Arbor, MI (US); and Leo Mcmanus, Ann Arbor, MI (US)
Assigned to The Regents of the University of Michigan, Ann Arbor, MI (US); REHABILITATION INSTITUTE OF CHICAGO, Chicago, IL (US); and Northwestern University, Evanston, IL (US)
Appl. No. 17/057,406
Filed by The Regents of the University of Michigan, Ann Arbor, MI (US); REHABILITATION INSTITUTE OF CHICAGO, Chicago, IL (US); and Northwestern University, Evanston, IL (US)
PCT Filed May 22, 2019, PCT No. PCT/US2019/033555
§ 371(c)(1), (2) Date Nov. 20, 2020,
PCT Pub. No. WO2019/226789, PCT Pub. Date Nov. 28, 2019.
Claims priority of provisional application 62/674,882, filed on May 22, 2018.
Prior Publication US 2021/0307938 A1, Oct. 7, 2021
Int. Cl. A61F 2/66 (2006.01); A61F 2/70 (2006.01); A61F 2/50 (2006.01); A61F 2/68 (2006.01)
CPC A61F 2/6607 (2013.01) [A61F 2/70 (2013.01); A61F 2002/507 (2013.01); A61F 2002/6657 (2013.01); A61F 2002/6863 (2013.01); A61F 2002/701 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A cam system for an assistive device, comprising:
a cam comprising at least two distinct cam profiles; and
a cam follower, wherein said cam follower is stationary, and
wherein said cam and said cam follower are configured to switch between said distinct cam profiles when the assistive device is in use.