A - Human Necessities – 61 – B
Patent
A - Human Necessities
61
B
A61B 6/00 (2006.01) A61B 19/00 (2006.01)
Patent
CA 2250961
Apparatus for X-ray guided surgery, including a reference element (20), which is placed in contact with the body (32) of a subject. The element includes a plurality of fiducial marks (22a, 22b, 22c) and a first coordinate sensing device (24), in predetermined, fixed positions in the element (20). A surgical tool (36), having a distal end for insertion into the body (32), includes a second coordinate sensing device (40) fixed thereto. A fluoroscope (54) forms an X-ray image of the body, including the fiducial marks. A computer analyzes the image to determine the position of the reference element in the image, so as to find coordinates of the first coordinate sensing device relative to the image, and registers the positions of the tool with the X-ray image by referring coordinates of the second coordinate sensing device to the known coordinates of the first position sensor.
L'invention concerne un appareil de chirurgie à guidage radioscopique comprenant un élément de référence (20), placé en contact avec le corps (32) d'un sujet. Ledit élément comprend, en des positions prédéterminées et fixes, une pluralité de repères (22a, 22b, 22c) ainsi qu'un premier localisateur (24). Un second localisateur (40) est fixé sur un instrument chirurgical (36), dont une extrémité distale est prévue pour pénétrer dans le corps (32). Un fluoroscope (54) donne un image radioscopique du corps incluant les repères. Un ordinateur analyse l'image afin de déterminer la position de l'élément de référence dans l'image, de manière à trouver les coordonnées du premier localisateur par rapport à l'image, et il enregistre la position de l'instrument d'après l'image radioscopique en inférant les coordonnées du second localisateur à partir des coordonnées connues du premier localisateur.
Ben-Haim Shlomo
Govari Assaf
Weinfeld Ze'ev
Biosense Inc.
Norton Rose Or S.e.n.c.r.l.,s.r.l./llp
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