Patient-specific surgical guidance tool and method of use

A - Human Necessities – 61 – B

Patent

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Details

A61B 17/56 (2006.01) A61B 17/15 (2006.01) A61B 17/17 (2006.01)

Patent

CA 2687116

Presented is a preoperatively designed guidance tool for intraoperative use during bone or joint surgery wherein the guidance tool is specific to the anatomy of the patient being treated. The guidance tool comprises a body portion, a mating surface provided on the body portion for positioning the guidance tool on a corresponding registration surface of a patient's anatomy. The guidance tool further comprises at least one guide mechanism provided on the body portion for guiding a medical instrument at one or more preoperatively defined trajectories relative to a patient's anatomy. In the event of misalignment, the at least one guide mechanism is adjustable to alter the one or more preoperatively defined trajectories if necessary during intraoperative use. Also presented is a preoperative process for designing the guidance tool.

L'invention concerne un outil de guidage préopératoire conçu pour remplir des fonctions intra-opératoires lors d'une intervention chirurgicale osseuse ou articulaire, l'outil de guidage étant adapté à l'anatomie du patient traité. L'outil de guidage comprend une partie de corps, une surface de contact ménagée sur la partie de corps pour placer l'outil de guidage sur une surface d'enregistrement correspondante de l'anatomie d'un patient. L'outil de guidage comprend en outre au moins un mécanisme de guidage ménagé sur la partie de corps pour guider un instrument médical sur une ou plusieurs trajectoires définies avant l'opération, relativement à l'anatomie d'un patient. Dans le cas d'un défaut d'alignement, le mécanisme de guidage est ajustable de façon à modifier ladite ou lesdites trajectoires définies avant l'opération si nécessaire pendant l'utilisation intra-opératoire. L'invention concerne également un procédé préopératoire de conception de l'outil de guidage.

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