Hand prosthesis

A - Human Necessities – 61 – F

Patent

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Details

A61F 2/54 (2006.01) A61F 2/56 (2006.01) A61F 2/58 (2006.01) A61F 2/68 (2006.01) A61F 2/00 (2006.01) A61F 2/70 (2006.01) A61F 2/72 (2006.01)

Patent

CA 2184985

A prosthesis (1) for providing at least one me- chanically operable finger member (3), having at least one finger member (3) extending generally tangentially with respect to a fixed worm gear wheel (4) on a sup- port body of the prosthesis (1) and mounted for rotation about the worm gear wheel spindle (18). The finger member (3) has a drive motor (8) with a worm (5) ex- tending longitudinally of the finger member (3) and in engagement with the gear teeth (11) of the worm gear wheel (4). In use of the prosthesis (1), the finger mem- ber (3) moves around the worm gear wheel (4) towards or away from another finger member (3) and/or a natu- ral finger for closing and opening of a hand grip when the motor (8) is operated.

Prothèse (1) servant à constituer au moins un élément doigt (3) fonctionnant mécaniquement et possédant au moins un élément doigt (3) s'étendant généralement tangentiellement par rapport à une roue fixe à vis sans fin (4) sur un élément de support de la prothèse (1) et monté rotatif autour de l'axe (18) de ladite roue. L'élément doigt (3) possède un moteur d'actionnement (8) comportant une vis sans fin (5) s'étendant dans le sens de la longueur dudit élément (3) et s'engrenant dans les dents (11) de la roue à vis sans fin (4). Lorsqu'on utilise la prothèse (1), l'élément doigt (3) se déplace autour de la roue à vis sans fin (4), de façon à se rapprocher ou à s'éloigner d'un autre élément doigt (3) et/ou d'un doigt naturel, afin d'effectuer l'ouverture ou la fermeture de la main, quand le moteur (8) est en fonctionnement.

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