Prosthetic foot having a low profile cantilever spring keel
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United States of America Patent
Stats
-
Nov 19, 1991
Grant Date -
N/A
app pub date -
Oct 25, 1988
filing date -
Oct 25, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A prosthetic foot (10) includes a viscoelastic cantilever spring keel (12) encased in foamed polymer cover (14) shaped to resemble a human foot. The keel (12) includes an attachment flange (16) for connecting the keel to an upper prosthesis at a location generally corresponding to the location of the ankle joint of a human foot. The keel (12) also includes a forefoot portion in the form of a singular beam (22) cantilevered forwardly and diagonally downwardly from the mounting flange (16). The beam (22) is composed of a primary section (50) extending forwardly from the attachment flange (16) and a forward portion (48) having a significantly lower spring rate and, thus, substantially more compliant than the adjacent portions of the beam primary section (50).
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Cited Art Landscape
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