Motion controlling hinge for orthopedic brace

A - Human Necessities – 61 – F

Patent

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Details

A61F 5/01 (2006.01)

Patent

CA 2513681

A motion controlling hinge (20) for an orthopedic brace is provided. The hinge includes an actuator (58) secured to one arm (22, 24), and at least one spring member (80). As the arm with the actuator pivots in a first direction, at a predetermined flexion angle the actuator applies a force to the spring member, causing the spring member to flex. The spring member exerts a force on the actuator tending to bias the actuator away from the spring member, and tending to bias the arm in a second direction opposite the first direction. In a preferred embodiment, the spring member comprises a plurality of flat bar leaf springs. A movable fulcrum (104) enables adjustment of a force exerted by the spring member on the actuator. A variety of differently sized adapters (66) are securable to the actuator. The size of the adapter (66) determines the flexion angle at which the spring member first exerts force on the actuator.

Cette invention concerne une charnière de commande de mouvement pour un appareil orthopédique. Cette charnière comprend un actionneur fixé à un bras ainsi qu'au moins un élément ressort. Lorsque le bras comportant l'actionneur pivote dans un premier sens, l'actionneur exerce une force sur l'élément ressort au niveau d'un angle de flexion prédéterminé, ce qui pousse l'élément ressort à fléchir. L'élément ressort exerce une force sur l'actionneur, ce qui tend à éloigner l'actionneur de l'élément ressort et à pousser le bras dans un second sens, opposé au premier sens. Dans un mode de réalisation préféré, l'élément ressort comprend une pluralité de ressorts à lames plates. Un point d'appui mobile permet de régler la force exercée par l'élément ressort sur l'actionneur. Une variété d'adaptateurs de différentes tailles peut être fixée sur l'actionneur. La taille de l'adaptateur détermine l'angle de flexion auquel l'élément ressort exerce en premier lieu la force sur l'actionneur.

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