Depth controllable and measurable medical driver devices and...

A - Human Necessities – 61 – B

Patent

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A61B 17/16 (2006.01)

Patent

CA 2729102

The devices and methods described involve driving a working tool in an axial direction such that linear movement is controlled and measurable and injury to structures surrounding a bone to be drilled can be avoided. The devices comprise an axial drive shaft (40) extending through a region of a housing (20, 210), a first drive element (30, 230) coupled to a region of the axial drive shaft, a rotational drive shaft (80) extending through a region of the housing, a second drive element (60, 260) coupled to a region of the rotational drive shaft, a coupler (90, 290) connected to a working tool (110, 310) and to the rotational drive shaft, and optionally a drill guide (370) assembly surrounding the working tool. The axial drive shaft is coupled either to the second drive element or to the drill guide assembly, so that when the first drive element is actuated axial travel of the working tool away frotn the housing or of the drill guide assembly towards the housing is obtained. A transducer (39) measures this movement.

Les dispositifs et les procédés décrits dans la présente invention impliquent lactionnement dun outil de travail dans une direction axiale, de telle sorte que le mouvement linéaire est contrôlé et mesuré, et quil est possible déviter les lésions des structures entourant un os devant être perforé. Ces dispositifs comprennent les éléments suivants : un arbre de commande axial (40) sétendant à travers une région dun boîtier (20, 210) ; un premier élément de commande (30, 230) couplé à une région de larbre de commande axial ; un arbre de commande rotationnel (80) sétendant à travers une région du boîtier ; un second élément de commande (60, 260) couplé à une région de larbre de commande rotationnel ; un coupleur (90, 290) raccordé à un outil de travail (110, 310) et à larbre de commande rotationnel ; et éventuellement un ensemble guide foret (370) entourant loutil de travail. Larbre de commande axial est couplé soit au second élément de commande, soit à lensemble guide foret, de telle sorte que lorsque le premier élément de commande est activé on obtient le déplacement axial de loutil de travail dans la direction opposée au boîtier ou le déplacement de lensemble guide foret en direction du boîtier. Un capteur (39) mesure ce mouvement.

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