Surgical instrument for shaping a bone
First Claim
1. A surgical instrument for shaping a bone or cavity which comprises a curved rod whose curvature corresponds in one plane to that of a desired surface to be shaped for said bone or cavity, a plurality of cutting heads, each of which having a plurality of cutting surfaces, said cutting heads being individually and sequentially mounted on said rod lengthwise thereof so as to be rotatable thereon and to provide said cutting surfaces lengthwise of the rod, said cutting heads being drivably interconnected so that rotation of one of said heads causes a head adjacent to said one of said heads to rotate.
1 Assignment
0 Petitions
Accused Products
Abstract
An instrument for shaping a bone cavity has a frame (2) including a stud (5) for locating the instrument in a bone canal. A curved rod (1) is supported on the frame and a plurality of cutting teeth (18) are threaded on the rod so as to be rotatable thereon. The cutting teeth are drivably interconnected so that rotation of one tooth causes an adjacent tooth to rotate.
-
Citations
10 Claims
- 1. A surgical instrument for shaping a bone or cavity which comprises a curved rod whose curvature corresponds in one plane to that of a desired surface to be shaped for said bone or cavity, a plurality of cutting heads, each of which having a plurality of cutting surfaces, said cutting heads being individually and sequentially mounted on said rod lengthwise thereof so as to be rotatable thereon and to provide said cutting surfaces lengthwise of the rod, said cutting heads being drivably interconnected so that rotation of one of said heads causes a head adjacent to said one of said heads to rotate.
- 8. An instrument for shaping a bone cavity which comprises a support rod, a curved guide rod whose curvature corresponds in one plane to that of a desired surface to be shaped for said bone mounted at one end on the support rod and extending generally at an acute angle thereto and a plurality of individual cutting heads mounted sequentially for rotation on said guide rod, each of said heads having lateral cutting surfaces and said heads being drivably interconnected so that rotation of one of said head causes a head adjacent said one of said heads to rotate and to ream an interior of the bone cavity.
Specification