1982-02-12
1984-04-17
Apley, Richard J.
A61F 1104
Patent
active
044425546
ABSTRACT:
The present invention provides a biomechanical ankle prosthesis device comprising a main base plate member adapted for connection to an artificial foot; a connector hinge member having an extended portion pivotally connected to one end of the main base plate member so as to pivot relative thereto about the longitudinal axis of the main base plate member, the connector hinge member being further defined as comprising a hinged portion having a longitudinal axis transverse to that of the main base plate member; a leg attachment member having a top portion adapted for connection to a user and its bottom portion being provided with a hinge portion operably connected to the connector hinge member to allow the leg attachment member and the main base plate member to move relative to each other in essentially the same plane about the longitudinal axis of the hinge assembly defined between the connector hinge member and the leg attachment member; and a spring interposed between the leg attachment member and the main base plate member.
REFERENCES:
patent: 2368917 (1945-02-01), Dumelin
patent: 2556525 (1951-06-01), Drennon
patent: 3874004 (1975-04-01), May
Apley Richard J.
Isabella David J.
Keaty Thomas S.
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