A - Human Necessities – 61 – F
Patent
A - Human Necessities
61
F
3/131
A61F 2/60 (2006.01) A61F 2/00 (2006.01) A61F 2/50 (2006.01) A61F 2/66 (2006.01)
Patent
CA 1299819
ABSTRACT A lower leg prosthesis comprises an elongated pylon formed from resin-impregnated, high-strength filament. The pylon has an upper extremity, an intermediate shin portion and a lower forward foot portion formed integrally with one another. The foot portion extends downwardly and forwardly of the shin portion so as to have substantially low energy absorption compliance in response to vertical loads thereupon. A heel portion is secured to the forward foot portion and is fabricated from the resin-impregnated, high-strength filament. The shin portion of the pylon has a cross-section with a high moment of inertia about an axis generally aligned with the fore and aft direction and a relatively low area moment of inertia about a horizontal axis perpendicular to the fore and aft direction, whereby the shin portion and the forward foot portion may flex in a vertical fore and aft plane and not in a vertical transverse plane. The upper extremity of the pylon is rigid to restrict the length of the shin portion and provide for modular fitment of the pylon by being cut and adjusted to an amputee without affecting the compliant response of the shin and foot portions of the pylon.
561181
Phillips Van L.
Fetherstonhaugh & Co.
Phillips Van L.
LandOfFree
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