Multifaceted tracker device for computer-assisted surgery

Details Multifaceted tracker device for computer-assisted surgery Multifaceted tracker device for computer-assisted surgery

A - Human Necessities

61

B

A61B 19/00 (2006.01)

Patent

CA 2622607

A tracker device (10,10',10") of the type associated with a surgical instrument and being trackable in space by a CAS system (100) such that a position of the surgical instrument is calculable. A support (12) is adapted to be connected to the surgical instrument. Optical elements are mounted to the support (12) in a first pattern (44A) so as to be detectable by the CAS system along a first range of visibility. Other optical elements are mounted to the support in a second pattern (44B,44C) so as to be detectable by the CAS system along a second range of visibility, with the first range of visibility and the second range of visibility having at most a common portion, whereby a position of the surgical instrument is tracked within the first and the second range of visibility as a function of the detection of any one of the patterns (44A,44B,44C) of the optical elements.

L'invention concerne un dispositif de poursuite (10,10',10") associé à un instrument chirurgical et pouvant être poursuivi dans l'espace par un système CAS (100) de sorte qu'une position de l'instrument chirurgical puisse être calculée. Un support (12) est conçue de manière à être relié à l'instrument chirurgical. Des éléments optiques sont montés sur le support (12) sur un premier motif (44A) de sorte à pouvoir être détecté par le système CAS le long d'un premier niveau de visibilité. D'autres éléments optiques sont montés sur le support sur un second motif (44B, 44C) de manière à pouvoir être détecté par le système CAS le long d'un second niveau de visibilité, le premier et le second niveau de visibilité possédant au plus une partie commune, à partir de laquelle une position de l'instrument chirurgical est poursuivie dans le premier et le second niveaux de visibilité comme fonction de détection de n'importe quel motif (44A, 44B, 44C) des éléments optiques.

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