Method and apparatus for positioning a surgical instrument

A - Human Necessities – 61 – B

Patent

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Details

A61B 17/00 (2006.01) A61B 8/12 (2006.01) A61B 5/055 (2006.01) A61B 6/12 (2006.01) A61B 19/00 (2006.01)

Patent

CA 2491003

Presented are methods and apparatus for delivering a surgical instrument to a treatment site within the body of a subject, enabling accurate placement of surgical tools in areas not directly visible to a surgeon during a surgical procedure, while reducing or eliminating need for real-time imaging modalities to guide placement of those surgical tools. A treatment tool is guided to a treatment site by placing a guiding element at a reference site within a body of a subject, the reference site having a known spatial relationship to the treatment site, and utilizing a positioning tool to guide a treatment tool to a locus so positioned with respect to that guiding element that the spatial relationship between that guiding element and that locus is substantially similar to the spatial relationship known to exist between the reference site and the treatment site, thereby positioning the treatment tool substantially at the treatment site. Methods and apparatus for treatment of Benign Prostate Hyperplasia are also presented.

L'invention concerne des méthodes et un dispositif permettant d'amener un instrument chirurgical sur un site d'intervention dans le corps d'un patient, de positionner des outils chirurgicaux avec précision dans des zones qui ne sont pas directement visibles pendant une intervention chirurgicale, tout en réduisant ou en éliminant l'utilisation de moyens d'imagerie en temps réel pour le guidage et le placement desdits outils. Pour guider un outil jusqu'à un site d'intervention, on place un élément de guidage sur un site de référence dans le corps du patient, site dont la relation spatiale avec le site d'intervention est connue, et l'on utilise un outil de positionnement pour guider l'outil chirurgical jusqu'à un point disposé de telle manière par rapport à l'élément de guidage que la relation spatiale entre cet élément de guidage et ledit point est sensiblement la même qu'entre le site de référence et le site d'intervention, d'où possibilité de positionner l'outil chirurgical sensiblement sur le site de l'intervention. Sont également présentés des méthodes et un dispositif pour traitement de l'hyperplasie bénigne de la prostate.

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