Knee brace hinges having dual axes of rotation

A - Human Necessities – 61 – F

Patent

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Details

A61F 5/01 (2006.01)

Patent

CA 2550025

Disclosed is a knee brace that incorporates hinges that allow the brace to pivot simultaneously about a flexion-extension axis and a longitudinal rotation axis as the brace flexes and/or extends. The hinges include a medial hinge and a lateral hinge. The medial hinge defines a medial pivot axis and the lateral hinge defines a lateral pivot axis. The medial pivot axis does not coincide with the lateral pivot axis, and neither axis coincides with the flexion-extension axis. Calf portions of each hinge are pivotable with respect to their respective uprights about an axis that is substantially parallel to the longitudinal rotation axis. The pivotability of the calf portions with respect to the calf frame eliminates stresses that would otherwise develop in the hinges as the brace flexes and/or extends.

L'invention concerne une attelle de genou comportant des charnières qui permettent à l'attelle de tourner simultanément autour d'un axe de flexion-extension et d'un axe de rotation longitudinal lorsque l'attelle fléchit et/ou se déploie. Ces charnières sont constituées d'une charnière médiane et d'une charnière latérale. La charnière médiane définit un axe de rotation médian et la charnière latérale définit un axe de rotation latéral. L'axe de rotation médian ne coïncide pas avec l'axe de rotation latéral, et aucun de ces axes ne coïncide avec l'axe de flexion-extension. Des parties mollet de chaque charnière sont pivotantes par rapport à leur verticale respective autour d'un axe qui est sensiblement parallèle à l'axe de rotation longitudinal. L'aptitude à pivoter des parties mollet par rapport au cadre mollet supprime les contraintes qui sinon se développeraient dans les charnières lorsque l'attelle fléchit et/ou se déploie.

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