Patent ID: 11883305
Assignee: MASSACHUSETTS INSTITUTE OF TECHNOLOGY
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 0:
1. An ankle-foot prosthesis comprising:
a foot structure comprising an anterior portion and a foot keel leaf spring extending posteriorly from the anterior portion;
an ankle-bearing block mounted to and above the foot keel leaf spring;
a shank shell mounted to and above the ankle-bearing block at an ankle joint;
a prosthetic shank interface mounted to the shank shell;
an upper leaf spring extending posteriorly from the anterior portion of the foot structure above the keel leaf spring past the ankle-bearing block;
a processor controlled active element extending along an active element axis between the shank shell and a posterior portion of the upper leaf spring and coupled to the shank shell at a shank shell rotational bearing and to the upper leaf spring at an upper leaf spring rotational bearing.