Prosthetic foot having a low profile cantilever spring keel

Details Prosthetic foot having a low profile cantilever spring keel Prosthetic foot having a low profile cantilever spring keel

1988-10-25

1991-11-19

Isabella, David J.

Prosthesis (i.e., artificial body members), parts thereof, or ai

Leg

Foot

623 53, A61F 266

Patent

active

050663054

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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Quantum Brochure by J. E. Hanger & Co. Ltd.

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