Prosthesis (i.e. – artificial body members) – parts thereof – or ai – Leg – Ankle
Patent
1998-05-26
1999-06-22
Yu, Mickey
Prosthesis (i.e., artificial body members), parts thereof, or ai
Leg
Ankle
623 53, A61F 266
Patent
active
059139013
ABSTRACT:
The present invention is an ankle joint prosthesis which is used for connecting an artificial leg to an artificial foot wherein, said ankle joint prosthesis includes an upper ankle part which rigidly connects to the artificial leg and, a lower ankle part for rigidly connecting said ankle joint prosthesis to an artificial foot. The ankle joint prosthesis also includes a hollow shaft concentric with an ankle axis which is pivotally mounted in a shaft bore for rotating said upper and lower ankle parts relative to each other about the ankle axis. The ankle joint prosthesis also includes a locking mechanism having a semi-circular spine upper section with a radius centred about the ankle axis which is adapted to co-operate with and releasably mesh with splines on a semi-circular splined lower arc section. The ankle joint prosthesis also includes a plunger operably connected to said upper arc section, wherein depressing the plunger allows the wearer of the ankle joint prosthesis to self adjust the foot orientation using only finger pressure while said prosthesis is attached to said leg and foot and the plunger is operable by the wearer without disassembly of the prosthesis or the use of any additional aids or adjustment tools other than simple finger pressure.
REFERENCES:
patent: 2749557 (1956-06-01), Riddle
patent: 4413360 (1983-11-01), Lamb et al.
patent: 5116383 (1992-05-01), Shorter et al.
patent: 5156630 (1992-10-01), Rappoport et al.
patent: 5800564 (1998-09-01), Gelineau
Snow Bruce E.
Yu Mickey
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