Lower limb prosthesis comprising a hydraulic damping and a vacuum generating mechanism
US11246723B2 · kind B2 · utility
2Cited by
1References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 8, 2019 |
| Grant date | Feb 15, 2022 |
| Priority date | — |
| Expiry date | Feb 1, 2040 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2002/807
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A lower limb prosthesis comprises a foot component and an ankle unit pivotally mounted to the foot component. The ankle unit comprises an ankle joint mechanism comprising a hydraulic piston and cylinder assembly for providing hydraulic damping whenever the ankle joint flexes, and a vacuum mechanism comprising a pneumatic piston and cylinder assembly for generating a vacuum. The hydraulic and pneumatic piston and cylinder assemblies are arranged such that the vacuum mechanism generates a vacuum during plantar-flexion of the ankle unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.