Adjustable surgical templates
First Claim
1. A surgical template adjustable in conformity to specific geometric parameters of an intraoperatively reachable bone surface of a patient'"'"'s bone, comprising positioning means including a number of bone-engaging elements adapted to be preoperatively adjusted and maintained in a predetermined configuration to match corresponding predetermined contact points on said bone surface for allowing said surgical template to be readily intraoperatively registered in a predetermined position on the bone surface, and a guide forming part of said surgical template for guiding a surgical tool in a predetermined direction to a specific location on the bone surface when the surgical template is in said predetermined position.
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Abstract
A surgical template (30) adjustable in conformity to specific geometric parameters of an intraoperatively reachable bone surface. The template (30) comprises a number of bone-engaging elements (40, 48 and 50) adapted to be preoperatively adjusted and maintained in a predetermined configuration to match corresponding predetermined contact points on the bone surface for allowing the surgical template (30) to be readily intraoperatively registered in a predetermined position on the bone surface. The template (30) also includes a guide (36) adapted to be preoperatively adjusted according to the geometric parameters of the bone for guiding a surgical tool in a predetermined direction to a specific location on the bone surface when the surgical template is registered thereon.
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Citations
21 Claims
- 1. A surgical template adjustable in conformity to specific geometric parameters of an intraoperatively reachable bone surface of a patient'"'"'s bone, comprising positioning means including a number of bone-engaging elements adapted to be preoperatively adjusted and maintained in a predetermined configuration to match corresponding predetermined contact points on said bone surface for allowing said surgical template to be readily intraoperatively registered in a predetermined position on the bone surface, and a guide forming part of said surgical template for guiding a surgical tool in a predetermined direction to a specific location on the bone surface when the surgical template is in said predetermined position.
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18. A method of orienting a surgical tool relative to a bone surface, wherein the surgical tool must contact a specific location on the bone surface at a predetermined angle, comprising the steps of:
- generating a three dimensional computer model of the bone surface, providing a surgical template having bone-engaging elements and a guide;
given the specific geometrical parameters of the bone surface, adjusting said bone-engaging elements in a predetermined configuration in which said bone-engaging elements match predetermined contact points on said bone surface for allowing said surgical template to be registered in a unique preoperatively determined position on said bone surface;
given said preoperatively determined position, adjusting the orientation of said guide according to the specific geometrical parameters of the bone surface and the task to be performed;
localizing said templates on said bone surface until a perfect match is obtained with said bone-engaging elements abutting against said corresponding predetermined contact points on the bone surface, thereby automatically orienting said guide relative to said bone surface for guiding said surgical tool to contact the specific location on the bone surface at the predetermined angle. - View Dependent Claims (19, 20, 21)
- generating a three dimensional computer model of the bone surface, providing a surgical template having bone-engaging elements and a guide;
Specification