Method and apparatus for generating controlled torques on...

A - Human Necessities – 61 – B

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A61B 5/05 (2006.01) A61B 1/005 (2006.01) A61B 5/055 (2006.01) A61B 5/06 (2006.01) H02K 57/00 (2006.01)

Patent

CA 2331947

A method and apparatus for generating a controlled torque of a desired direction and magnitude in an object (30) within a body, particularly in order to steer the object (30) through the body, such as catheter through a body vessel in a living body, by producing an external magnetic field of known magnitude and direction within the body, applying to the object (30) a coil assembly (20) including preferably three coils of known orientation with respect to each other, preferably orthogonal to each other, and controlling the electrical current through the coils (20) to cause the coil assembly (20) to generate a resultant magnetic dipole interacting with the external field to produce a torque of the desired direction and magnitude.

Procédé et dispositif servant à générer un couple commandé dans un sens et avec une intensité souhaités dans un objet à l'intérieur du corps, de façon, en particulier, à piloter cet objet à travers le corps, tel qu'un cathéter à travers un vaisseau sanguin dans un corps vivant, ce qui consiste à créer un champ magnétique extérieur d'intensité et de sens connus à l'intérieur du corps, à appliquer à l'objet un ensemble bobine composé, de préférence, de trois bobines d'orientation connue, de préférence, orthogonale, les unes par rapport aux autres et à réguler le courant électrique à travers les bobines, de manière à provoquer la génération par cet ensemble bobine d'un dipôle magnétique exerçant une interaction avec le champ magnétique extérieur afin de produire un couple présentant le sens et l'intensité souhaités.

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