Prosthetic foot with tunable performance

A - Human Necessities – 61 – F

Patent

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Details

A61F 2/80 (2006.01) A61F 2/66 (2006.01) A61F 2/00 (2006.01) A61F 2/50 (2006.01) A61F 2/76 (2006.01)

Patent

CA 2446768

A prosthetic foot (1) incorporates a foot keel (2) and a calf shank (6) connected to the foot keel to form an ankle joint area of the prosthetic foot (1). The foot keel (2) has forefoot (3) and hindfoot (4) portions and a relatively long midfoot portion (5) extending between and upwardly arched from the forefoot (3) and midfoot hindfoot (4) portions. The calf shank (6) includes a downward convexly curved lower end (7) which is attached at a portion thereof to the keel midfoot portion (5) by way of an adjustable fastener (8) arrangement. The foot has biplanar motion capability and, in a preferred form, also has high low dynamic response characteristics. The adjustable fastener (8) arrangement permits adjustment of the alignment of the calf shank (6) and the foot keel (2) with respect to one another in the longitudinal direction of the foot keel (2) for tuning the performance of the prosthetic foot (1).

L'invention concerne une prothèse pour pied (1) comprenant un pied (2) et une tige de mollet (6) reliée au pied pour former une zone d'articulation de la cheville. Le pied (2) comporte des parties avant (3) et arrière (4) et une partie centrale (5) relativement longue s'étendant entre l'avant (3) et l'arrière (4) du pied, ladite partie étant arquée vers le haut. La tige du mollet (6) comprend une extrémité inférieure courbée vers le bas de manière convexe (7) qui est attachée au niveau d'une partie correspondante à la partie centrale du pied (5) au moyen d'un dispositif d'attache (8) réglable. Le pied possède une capacité de déplacement en biplan et, sous une forme préférée, des caractéristiques de réponse dynamique élevée et basse. Le dispositif d'attache réglable (8) permet d'adapter l'alignement de la tige du mollet (6) et du pied (2) par rapport à un autre pied, dans le sens longitudinal du pied (2) de manière à adapter la capacité de la prothèse (1).

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