Prosthetic hydraulic joint with accumulator and methods for controlling joint
US9820871B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 2, 2012 |
| Grant date | Nov 21, 2017 |
| Priority date | — |
| Expiry date | Jul 2, 2032 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2002/7665
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A prosthetic foot assembly is disclosed. The assembly includes a pivoting ankle joint with a hydraulic system, a prosthetic foot connected to the distal side of the ankle joint, and, at the proximal side, the ankle joint includes a transducer with pyramid adaptor for attaching to a pylon. The ankle joint sensor provides data collection during the stance and optionally, the swing, phases of walking using, for example, strain gages and accelerometers. Also disclosed are methods for real-time feature extraction. Key parameters are captured to which are applied linear, fuzzy logic, neural net, or generic algorithms to determine current state (walking flat, uphill, downhill etc.) in real time and execute changes to the angle between the ankle and foot almost instantaneously based on those parameters.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.