Method and system for tracking tools in computer-assisted...

A - Human Necessities – 61 – B

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A61B 19/00 (2006.01) A61B 5/06 (2006.01) A61B 6/00 (2006.01) A61B 17/56 (2006.01)

Patent

CA 2638067

A system (10) for tracking a bone-altering tool (14) in computer-assisted surgery, comprising a first trackable reference (20) secured to a first bone (12), with a first frame of reference being associated with the first trackable reference (20). A bone-altering tool (14) is securable to the first bone (12) in a secured configuration. Sensors (26) track the trackable reference (20) for position and orientation. A position/orientation calculator (34) is connected to the sensor device (26) to calculate a position and orientation of the first frame of reference. An alteration parameter calculator (38) is associated with the position/orientation calculator (34) to determine a position and orientation of the bone-altering tool (14) in the secured configuration as a function of the position and orientation of the first frame of reference and of the secured configuration. A method (100) for tracking tools using the tracking of a bone is provided.

La présente invention concerne un système (10) pour le repérage d'outil de modification osseuse (14) dans la chirurgie assistée par ordinateur, comportant une première référence repérable (20) solidaire d'un premier os (12), une première trame de référence étant associée à la première référence repérable (20). Un outil de modification osseuse (14) est apte à être solidarisé au premier os (12) dans une configuration solidaire. Des capteurs (26) repèrent la référence repérable (20) concernant la position et l'orientation. Un calculateur de position/d'orientation (34) est relié au dispositif capteur (26) pour calculer la position et l'orientation de la première trame de référence. Un calculateur de paramètres de modification (38) est associé au calculateur de position/d'orientation (34) pour déterminer la position et l'orientation de l'outil de modification osseuse (14) dans la configuration solidaire en fonction de la position et de l'orientation de la première trame de référence et de la configuration solidaire. L'invention concerne également un procédé (100) de repérage d'outils au moyen du système de repérage d'un os.

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