Robotized installation for the positioning and movement of a...

A - Human Necessities – 61 – B

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Details

A61B 19/00 (2006.01) A61N 2/00 (2006.01) A61N 5/01 (2006.01) A61B 6/00 (2006.01)

Patent

CA 2655433

Robotized installation for the guided and controlled positioning and movement of a therapeutic, diagnostic or surgical component or instrument in the area of or around a patient's head, said installation comprising a robotic device which forms a serial kinematic chain and which, at its free and controlled end, carries the aforementioned component or instrument. Installation (1) characterized in that said robotic device (5) is composed of three (7, 7', 7') kinematic subassemblies mutually connected in series, comprising, on the one hand, a first subassembly (7) in the form of a mechanism with rotary articulations corresponding to a spherical kinematic arrangement of the serial type with three degrees of freedom, the articulation elements all being situated outside the volume for receiving the patient, and their axes of rotation being coincident at a focal point corresponding substantially to the hypothetical centre of the head of the patient in the position of the intervention, and, on the other hand, a second subassembly (7') in the form of a mechanism for linear translation along an axis passing through the focal point, and, finally, a third subassembly (7') in the form of a second mechanism with rotary articulations, integrally connected to the movable part of the second subassembly (7') and also corresponding to a spherical kinematic arrangement of the serial type with three degrees of freedom.

Installation robotisée pour le positionnement et le déplacement guidés et contrôlés d'un organe ou instrument de traitement, de diagnostic ou opératoire au niveau ou autour de la tête d'un patient, ladite installation comprenant un dispositif robotique formant une chaîne cinématique série et portant à son extrémité libre et contrôlée en position l'organe ou l'instrument précité. Installation (1) caractérisée en ce que ledit dispositif robotique (5) est constitué de trois (7, 7', 7"), sous-ensembles cinématiques mutuellement associés en série, comprenant, d'une part, un premier sous- ensemble (7) sous la forme d'un mécanisme à articulations rotatoires correspondant à un arrangement cinématique sphérique de type série à trois degrés de liberté, les éléments d'articulation étant tous situés en dehors du volume susceptible de recevoir le patient et leurs axes de rotation étant concourants en un point focal correspondant sensiblement au centre hypothétique de la tête du patient en position d'intervention, d'autre part, un deuxième sous-ensemble (7') sous la forme d'un mécanisme à translation linéaire selon un axe passant par le point focal, et enfin, un troisième sous ensemble (7") sous la forme d'un second mécanisme à articulations rotatoires, solidaire de la partie mobile du second sous-ensemble (7') et correspondant également à un arrangement cinématique sphérique de type série à trois degrés de liberté.

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