Surgical navigation imaging system

A - Human Necessities – 61 – B

Patent

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A61B 19/00 (2006.01)

Patent

CA 2523727

A system and method for navigation within a surgical field are presented. In exemplary embodiments according to the present invention a micro-camera can be provided in a hand-held navigation probe tracked by a tracking system. This enables navigation within an operative scene by viewing real-time images from the viewpoint of the micro-camera within the navigation probe, which are overlaid with computer generated 3D graphics depicting structures of interest generated from pre-operative scans. Various transparency settings of the camera image and the superimposed 3D graphics can enhance the depth perception, and distances between a tip of the probe and any of the superimposed 3D structures along a virtual ray extending from the probe tip can be dynamically displayed in the combined image. In exemplary embodiments of the invention a virtual interface can be displayed adjacent to the combined image on a system display, thus facilitating interaction with various navigation related functions.

L'invention concerne un système de navigation dans un champ chirurgical, par exemple sous des variantes avec microcaméra dans une sonde de navigation manuelle poursuivie par un système de poursuite. On assure ainsi la navigation dans un champ opératoire au moyen d'images en temps réel depuis le point de vision de la microcaméra dans la sonde de navigation, superposées avec des graphiques informatiques 3D révélant les structures d'intérêt issues d'explorations préopératoires. Différents réglages de transparence de l'image de caméra et des graphiques 3D superposés permettent d'augmenter la perception de profondeur, et par ailleurs on peut afficher de façon dynamique dans l'image combinée les distances entre une extrémité de la sonde et toute structure 3D superposée le long d'un rayon virtuel qui s'étend depuis ladite extrémité. Sous différentes variantes, il est possible d'afficher une interface virtuelle en position adjacente à l'image combinée sur un afficheur du système, ce qui facilite l'interaction avec diverses fonction de navigation connexes.

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