Prosthesis (i.e. – artificial body members) – parts thereof – or ai – Leg – Adjustable shank or thigh
Patent
1994-01-14
1995-06-20
Willse, David H.
Prosthesis (i.e., artificial body members), parts thereof, or ai
Leg
Adjustable shank or thigh
623 52, 623 55, 623 47, A61F 262, A61F 266
Patent
active
054257816
ABSTRACT:
An exoskeletal (or endoskeletal) ankle connector for use in fixedly securing a prosthetic foot to a prosthetic leg. The foot has an elongated cantilever spring type keel. The keel defines an elongated forefoot part, an ankle part and a heel part merging the ankle part with the forefoot part. The keel ankle part is provided with a cavity. The leg has a bottom end with an integral bolt with the bolt having a free projecting threaded stem. The ankle connector consists of a casing sized to conformingly engage into and snugly fit within the keel cavity; the casing is releasably anchored by bolts to the keel inside the keel cavity; an annular gear screw assembly within the casing is engaged threadingly by the leg bolt stem to progressively draw toward one another the casing and the leg bottom end along the bolt stem upon inducing rotation of the foot relative to the leg; and an endless screw meshes tangentially with the gear of the screw assembly to anchor the foot at a selected angular orientation relative to the leg upon the foot remaining rotationless relative to the leg. Operative access to the endless screw is enabled without there being required the piercing of an access bore neither through the heel part nor through the forefoot part.
REFERENCES:
patent: 3400408 (1968-09-01), Garcia
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patent: 5116385 (1992-05-01), Allard et al.
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patent: 5158570 (1992-10-01), Schey et al.
patent: 5226918 (1993-07-01), Silagy et al.
Allard Paul
Dansereau Jean
Lussier Mathieu
Trudeau Francois
Lesperance Pierre
Martineau Francois
Universite de Montreal
Willse David H.
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