Foot prosthesis with resilient multi-axial ankle
US7347877B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 17, 2004 |
| Grant date | Mar 25, 2008 |
| Priority date | — |
| Expiry date | Jan 19, 2025 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2250/0084
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The present foot prosthesis includes various structural features that provide the foot with advantageous rollover properties. In certain embodiments, the foot guides rollover toward the medial side. For example, an asymmetrical upper element and a correspondingly shaped resilient ankle member support more of the wearer's weight on the lateral side as the foot rolls over. In another embodiment, stiffeners added to the resilient ankle member increase the stiffness on the lateral side relative to the medial side. In certain other embodiments, the foot provides progressively increasing support from mid stance through toe off. For example, a gap between the resilient ankle member and the lower element closes during the later portion of the wearer's gait. The closing gap increases a contact area between the resilient ankle member and the lower element, providing progressively increasing support.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.