US 12,263,102 B2
Prosthetic foot with variable stiffness ankle
Christophe Guy Lecomte, Reykjavik (IS)
Assigned to Össur Iceland ehf, Reykjavik (IS)
Filed by Össur Iceland ehf, Reykjavik (IS)
Filed on Aug. 27, 2021, as Appl. No. 17/459,918.
Claims priority of provisional application 63/071,604, filed on Aug. 28, 2020.
Prior Publication US 2022/0062009 A1, Mar. 3, 2022
Int. Cl. A61F 2/66 (2006.01); A61F 2/50 (2006.01); A61F 2/70 (2006.01)
CPC A61F 2/6607 (2013.01) [A61F 2/70 (2013.01); A61F 2002/503 (2013.01); A61F 2002/6664 (2013.01); A61F 2002/707 (2013.01)] 21 Claims
OG exemplary drawing
 
1. A prosthetic ankle with variable stiffness and configured to couple to a plurality of foot elements, the prosthetic ankle comprising:
an adapter configured to operably couple to a user's limb;
a base configured to couple to one or more of the plurality of foot elements;
a pylon extending between the adapter and the base, wherein the pylon is an elongate beam, the pylon comprising a longitudinal axis and first and second ends along the longitudinal axis, the first end fixedly coupled to a bottom surface of the adapter and the second end rotatably coupled to the base;
at least one cantilever spring having a first end fixedly coupled to the base and a free second end extending toward the first end of the pylon; and
a slider configurable to be movable relative to the longitudinal axis of the pylon in response to a user input, the slider including at least one contact location for the at least one cantilever spring, the at least one contact location positioned between the first end and the free second end of the at least one cantilever spring,
wherein movement of the slider relative to the longitudinal axis of the pylon is configured to vary a position of the at least one contact location so as to vary a stiffness of the prosthetic ankle.