Posterior prosthetic spinal disc replacement and methods thereof
First Claim
1. An apparatus for inserting intervertebral artificial disc assemblies from a posterior approach to the spine, comprising:
- a trial comprising a trial head, wherein said trial head is configured and dimensioned to receive a first blade portion, a first chisel comprising a first blade portion, wherein the first blade portion is configured to slide over at least a portion of said trial, a positioning member comprised of an attaching portion and a guiding portion, said positioning member configured to attach to said trial;
a second chisel comprising a second blade portion, wherein said second chisel is configured to interact with said guiding member such that the second blade portion of said second chisel is spaced apart at predetermined distances and angles to said first blade portion of said first chisel.
1 Assignment
0 Petitions
Accused Products
Abstract
The present invention relates generally to a prosthetic spinal disc for replacing a damaged disc between two vertebrae of a spine. The present invention also relates to a method for implanting a prosthetic spinal disc via posterior or posterior lateral implantation. Other surgical approaches for implanting the prosthetic disc may also be used. The present invention also involves a method for implanting the prosthetic spinal disc while either avoiding or minimizing contact with the spinal cord and nerve rootlets, or reducing the time and extent that they need to be repositioned during implantation.
291 Citations
39 Claims
-
1. An apparatus for inserting intervertebral artificial disc assemblies from a posterior approach to the spine, comprising:
-
a trial comprising a trial head, wherein said trial head is configured and dimensioned to receive a first blade portion, a first chisel comprising a first blade portion, wherein the first blade portion is configured to slide over at least a portion of said trial, a positioning member comprised of an attaching portion and a guiding portion, said positioning member configured to attach to said trial;
a second chisel comprising a second blade portion, wherein said second chisel is configured to interact with said guiding member such that the second blade portion of said second chisel is spaced apart at predetermined distances and angles to said first blade portion of said first chisel. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
-
-
18. A method of inserting intervertebral prosthetic disc assemblies from a posterior approach comprising;
-
inserting a trial into an intervertebral space;
creating at least one first pathway in at least one vertebral body with a chisel, wherein the location of said pathway is determined by the position of the trial;
creating at least one second pathway in said vertebral body with a chisel, wherein the location of said second pathway is determined by the position of the trial;
inserting a first assembly of a prosthetic disc into an intervertebral space using one of said first or second pathways, wherein said first or second pathway determines the position of the first assembly; and
inserting a second assembly of a prosthetic disc into the intervertebral space using the other of said first or second pathways, wherein the other of said first or second pathway determines the position of the second assembly. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
-
-
30. An apparatus for inserting intervertebral artificial disc assemblies from a posterior approach to the spine, comprising:
-
a trial comprising a trial head, wherein said trial head is configured and dimensioned to receive a first blade portion, a first chisel comprising a first blade portion, wherein the first blade portion is configured to slide over at least a portion of said trial, a second chisel comprising a second blade portion, wherein said second chisel is configured to interact with either said trial or said first chisel such that the blade portion of said second chisel is spaced apart at predetermined distances and angles to said first blade portion of said first chisel. - View Dependent Claims (31, 32, 33, 34)
-
-
35. An apparatus for inserting intervertebral prosthetic disc assemblies from a posterior approach, comprising:
-
a kit including at least a first and second assembly;
wherein the second assembly is capable of being inserted into the intervertebral space at a position that is determined by the position of said first assembly. - View Dependent Claims (36, 37, 38, 39)
-
Specification