Method of making an intervertebral reamer
First Claim
1. A method of making a surgical tool for use in spinal stabilization in a mammal spine where said spine has contiguous vertebra, each including a body portion, said body portions being of generally predetermined dimension and spaced apart by a layer of tissue of generally predetermined dimension, said method comprising:
- providing a tool body having an operator engaging end and a distal end;
sizing said distal end to have external dimensions selected for said distal end to be inserted within an animal body and located against said layer;
providing cutting means on said distal end for cutting at least a portion of said layer and at least a portion of said body portions to form a chamber within said contiguous vertebra and layer, and with said chamber sized greater than said external dimension; and
providing control means for controlling a depth of cut of said cutting means between at least a first position with said cutting means retained within said external dimensions and at least a second position with said cutting means extended to form said chamber.
8 Assignments
0 Petitions
Accused Products
Abstract
A surgical tool is disclosed for use in spinal stabilization for fusing contiguous vertebra in an animal spine. The tool includes a distal end having external dimensions sized for the distal end to be inserted within the animal body and located against a tissue layer between contiguous vertebra. Cutting blades are carried on the distal end for cutting at least a portion of the layer and at least a portion of vertebra bodies to form a chamber within the contiguous vertebra. The cutting blades are selected for the chamber to be sized greater than the external dimensions of the distal end. A control element is provided for controlling a depth of cut of the cutting blade between at least first and second positions with the cutting blade retained within the external dimensions when in the first position and with the cutting blade extended to form the chamber when in the second position.
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Citations
12 Claims
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1. A method of making a surgical tool for use in spinal stabilization in a mammal spine where said spine has contiguous vertebra, each including a body portion, said body portions being of generally predetermined dimension and spaced apart by a layer of tissue of generally predetermined dimension, said method comprising:
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providing a tool body having an operator engaging end and a distal end; sizing said distal end to have external dimensions selected for said distal end to be inserted within an animal body and located against said layer; providing cutting means on said distal end for cutting at least a portion of said layer and at least a portion of said body portions to form a chamber within said contiguous vertebra and layer, and with said chamber sized greater than said external dimension; and providing control means for controlling a depth of cut of said cutting means between at least a first position with said cutting means retained within said external dimensions and at least a second position with said cutting means extended to form said chamber. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 11)
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9. A method for making a surgical tool for use in spinal stabilization in a mammal spine having contiguous vertebra with each including a body portion, said tool comprising:
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providing a tool body having a distal end; providing said distal end with a cutting blade moveable between first and second potions, sizing said blade for said blade in said first position to be contained within external dimensions of said distal end, said blade in said second position to be disposed to cut a chamber sized greater than said external dimensions upon rotation of said body means; connecting a grip to said body means with said grip rotatable relative thereto about an axis of rotation; providing an eccentric pin mounted generally parallel to and spaced from said axis of rotation and disposed for eccentric movement about said axis of rotation upon rotation of said handle, said eccentric pin received within said blade for said eccentric pin to urge said blade to move between said first and second position upon rotation of said grip. - View Dependent Claims (10, 12)
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Specification