Variable direction of view instrument with on-board actuators

Details Variable direction of view instrument with on-board actuators Variable direction of view instrument with on-board actuators

G - Physics

02

B

G02B 23/24 (2006.01) A61B 1/012 (2006.01) G02B 23/02 (2006.01)

Patent

CA 2536291

A viewing instrument with a variable direction of view is disclosed generally comprising an outer instrument shaft, such as endoscope shaft, with a viewing element at its distal end, and an inner drive shaft within the outer shaft for moving the viewing element in order to change the direction of the view vector. First and second on-board actuators, such as motors, are arranged in the proximal portion of the instrument for rotating the outer and inner shaft, respectively, in order to rotate the viewing element through two degrees of freedom. In certain embodiments, the axes of the shafts are coincident, and the viewing element rotates about a rotational axis substantially perpendicular to shaft axes. In some embodiments, the axes of the motors are substantially parallel.

L'invention décrit un instrument optique dont l'orientation visuelle est variable, qui comprend généralement une tige extérieure creuse, comme celle d'un endoscope, portant un élément de vision à son extrémité distale, et une tige intérieure logée dans la tige extérieure, qui permet de déplacer l'élément de vision pour changer l'orientation du vecteur visuel. Deux actionneurs intégrés, tels que des moteurs, sont disposés à la partie proximale de l'instrument pour faire respectivement tourner les tiges extérieure et intérieure, de façon à orienter l'élément de vision avec deux degrés de liberté. Dans une première forme de réalisation, les axes des deux tiges coïncident et l'élément de vision tourne autour d'un axe sensiblement perpendiculaire à celui des tiges concentriques. Dans d'autres formes de réalisation, les axes des moteurs sont sensiblement parallèles.

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