Prosthetic attachment locking assembly having prosthetic attachment lock
US6267787A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 21, 1999 |
| Grant date | Jul 31, 2001 |
| Priority date | — |
| Expiry date | Jul 21, 2019 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2002/7875
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A prosthetic attachment locking assembly includes a distal adaptor fittable in the bottom of a socket for a residual limb stump and has an upper surface configured to accept an end of a stump liner. The internal surface of the socket merges smoothly with the upper surface of the distal adaptor. The distal adaptor has a pin bore through which a lock pin of the stump liner may extend, and a lower surface having a plurality of projections. A lock body of a prosthetic attachment lock has a pinion gear engagable with the lock pin to lock the lock pin, and an upper surface matably engagable with the projections such that the lock body and the distal adaptor may be connected via the projections and the upper surface of the lock body. The pinion gear is mounted to a centering axle. A one-way clutch for the pinion gear incorporates a sleeve non-rotatably mounting the centering axle such that the centering axle does not bind when it is pressed to move longitudinally. The centering axle is thus movable against a biasing force of a spring to disengage the gear from the lock pin.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.