Passive artificial knee
US10405997B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 4, 2016 |
| Grant date | Sep 10, 2019 |
| Priority date | — |
| Expiry date | May 4, 2036 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2005/0162
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A passive artificial knee includes a knee hinge assembly defining a knee axis, a locking hinge assembly defining a locking axis, and a post linking the knee hinge assembly and the locking hinge assembly. A ground reaction force applied to the artificial knee posterior to the locking axis causes an interfering relation by compression of the locking hinge assembly and the knee hinge assembly during heel strike at early-stance gait phase of an individual wearing the artificial knee, thereby locking rotation of the post about the knee axis. Shifting of ground reaction force anterior to the locking axis during a mid-stance to late-stance gait phase of the individual causes rotation of the post about the locking axis, thereby unlocking rotation of the post about the knee axis and enabling flexion and subsequent swing phase extension of the passive artificial knee joint. The artificial knee is a passive joint that can be fabricated and maintained at low expense.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.