Prosthetic knee with a rectification hydraulic system
US11213407B2 · kind B2 · utility
0Cited by
3References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 2, 2018 |
| Grant date | Jan 4, 2022 |
| Priority date | — |
| Expiry date | Jul 14, 2038 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2002/7665
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Described here are prosthetic systems, devices, and methods of use therefor. Generally, a prosthesis may be configured to set a resistance to rotation of a prosthetic joint based on a phase of gait. The prosthesis may include a first cylinder, a first piston slidable within the first cylinder, a fluid sump, and a fluid circuit. The fluid circuit may include a plurality of interconnected fluid channels having a unidirectional variable-resistance valve and a set of check valves that are configured to provide unidirectional flow through the valve during piston compression and extension.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.