Humeral rotating burr guide
A cutting guide for removal of bone during arthroplasty. The cutting guide includes a housing having a three-dimensional guide path and an arm coupled to the housing and extending through the guide path. The arm includes a burr. As the arm is slid along the path, the burr simultaneously cuts in two planes on the bone.
1. A cutting guide for removal of bone during arthroplasty, the cutting guide comprising: a housing having a three-dimensional guide path; an arm that is coupled to the housing and extends through the guide path; an adjustable cylinder couples the arm to the housing within the guide path, wherein the adjustable cylinder includes a locking mechanism for releasably locking the adjustable cylinder to the arm; the arm including a burr, wherein the arm further includes a restraint portion for coupling the burr to the arm, the restraint portion includes a vertically adjustable piece for adjusting depth of the burr relative to the arm; wherein as the arm is slid along the path, the burr simultaneously cuts in two planes on the bone.
2. The cutting guide of claim 1 , wherein the three-dimensional guide path is a slanted parabolic slot.
3. The cutting guide of claim 1 , wherein the arm is movably coupled to the housing.
4. The cutting guide of claim 1 , wherein the locking mechanism includes a plurality of notches on one of the arm and the adjustable cylinder and a movable ridge for engaging one of the plurality of notches on the other of the arm and the adjustable cylinder.
5. The cutting guide of claim 1 , wherein the locking mechanism is activated by depressing a button.
6. The cutting guide of claim 1 , wherein the arm is adjustable such that the radius to be cut can be changed.
7. The cutting guide of claim 1 , wherein the two planes cut include a form and a linear dimension.
8. The cutting guide of claim 1 , wherein the form cut is a parabola and the linear dimension is a depth.
9. A cutting guide for cutting a form of a head of a bone during arthroplasty, the cutting guide comprising: a housing having a three-dimensional guide path, the housing adapted to be placed on the head of the bone; an arm rotatably coupled to the housing and extends through the guide path; an adjustable cylinder movably couples the arm to the housing within the guide path, wherein the adjustable cylinder includes a locking mechanism for releasably locking the adjustable cylinder to the arm; a burr coupled to the arm, the burr adapted to cut the form of the bone as the arm rotates; wherein as the arm is slid along the path, the burr simultaneously cuts in two planes on the bone.
10. The cutting guide of claim 9 , wherein the form is a radius.