Vertebral body end plate cutter
First Claim
1. A tool for precisely violating end plates of adjacent vertebral bodies for intervertebral fusion techniques, said tool comprisinga first element for engaging one of said vertebral bodies, a second element for engaging the other of said vertebral bodies, at least one of said elements having at least one cutting structure thereon, and means for forcing said elements apart with sufficient force to drive said cutting structure into the end plate engaged thereby, so as to form a recess corresponding in shape to said cutting structure, wherein the forcing means is a screw jack.
0 Assignments
0 Petitions
Accused Products
Abstract
Precision recesses are cut in the end plates of vertebral bodies by inserting into the disc space a cutter having a pair of shell elements provided with cutting edges shaped to match bone growth apertures in a selected prosthesis. The remainder of the end plates are left undisrupted, to maximize bearing strength while promoting bone growth at the apertures.
-
Citations
11 Claims
-
1. A tool for precisely violating end plates of adjacent vertebral bodies for intervertebral fusion techniques, said tool comprising
a first element for engaging one of said vertebral bodies, a second element for engaging the other of said vertebral bodies, at least one of said elements having at least one cutting structure thereon, and means for forcing said elements apart with sufficient force to drive said cutting structure into the end plate engaged thereby, so as to form a recess corresponding in shape to said cutting structure, wherein the forcing means is a screw jack.
-
3. A tool for precisely violating end plates of adjacent vertebral bodies for intervertebral fusion techniques, said tool comprising
a first element for engaging one of said vertebral bodies, a second element for engaging the other of said vertebral bodies, at least one of said elements having at least one cutting structure thereon, and means for forcing said elements apart with sufficient force to drive said cutting structure into the end plate engaged thereby, so as to form a recess corresponding in shape to said cutting structure, wherein each of said elements is a shell having a protruding circumscribed cutting edge.
Specification