N degrees-of-freedom (dof) laparoscope maneuverable system

A - Human Necessities – 61 – B

Patent

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A61B 1/01 (2006.01) A61B 1/313 (2006.01) A61B 19/00 (2006.01)

Patent

CA 2734122

A laparoscope including a cylindrical device of multiple degrees of freedom which can be inserted through a small surgical incision. This is accomplished by means of a series of coaxial members nested within the aforementioned cylinder, each can rotate independently and actuate a desired motion at the distal end. The laparoscope has multiple consecutive arm sections, each includes several coaxial input shafts adapted to be rotated around an input axis of rotation by mutiple sources of torque. In addition, several constant velocity couplers connect the arm sections and are equipped with coaxial input transmission means, coaxial second transmission means and coaxial output transmission means to transfer the input torque to coaxial output shafts and facilitate the independent rotation and motion of the device distal end within the patient's body.

La présente invention concerne un laparoscope comprenant un dispositif cylindrique à degrés de liberté multiples pouvant être inséré par une petite incision chirurgicale. À cet effet, une série d'éléments coaxiaux sont logés à l'intérieur du cylindre susmentionné, chacun pouvant être mis en rotation indépendamment et déclencher un mouvement souhaité à l'extrémité distale. Ce laparoscope comprend de multiples sections de bras consécutives, chacune comportant plusieurs arbres d'entrée coaxiaux conçus pour être mis en rotation autour d'un axe de rotation d'entrée par de multiples sources de couple. Par ailleurs, plusieurs coupleurs à vitesse constante connectent les sections de bras et sont équipés de moyens de transmission coaxiaux d'entrée, de deuxièmes moyens de transmission coaxiaux et de moyens de transmission coaxiaux de sortie pour transférer le couple d'entrée aux arbres de sortie coaxiaux et faciliter la rotation indépendante et le mouvement de l'extrémité distale du dispositif à l'intérieur du corps du patient.

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