Spinal Rod Reducer and Cap Insertion Apparatus
First Claim
Patent Images
1. An apparatus for shifting a spinal rod into a coupling assembly and securing the rod to the coupling assembly with a cap member, comprising:
- a) a reducer assembly having a central axis, the reducer assembly having;
a clamp portion for clamping the coupling assembly to the reducer assembly; and
a reducing member for shifting the spinal rod into the coupling assembly;
b) a cap inserter having a shiftable drive member to drive the cap member into the coupling assembly to lock the rod with respect to the coupling assembly;
c) a throughbore of the reducer assembly into which the cap inserter drive member extends; and
d) a releasable coupling between the reducer assembly and the cap inserter to allow the reducer assembly to first reduce the spinal rod prior to coupling of the cap inserter to the reducer assembly, and thereafter allowing the position of a portion of the cap inserter to be fixed into position with respect to the throughbore of the reducer assembly via the releasable coupling to drive the cap member into the coupling assembly for locking of the rod therein.
7 Assignments
0 Petitions
Accused Products
Abstract
A medical instrument apparatus and method is provided for positioning and securing a spinal rod to a coupling device anchored to a vertebra. A reducer assembly shifts the spinal rod into place within the coupling device and a cap inserter assembly shifts a cap member into locking engagement with the coupling device to secure the spinal rod therein.
-
Citations
13 Claims
-
1. An apparatus for shifting a spinal rod into a coupling assembly and securing the rod to the coupling assembly with a cap member, comprising:
-
a) a reducer assembly having a central axis, the reducer assembly having; a clamp portion for clamping the coupling assembly to the reducer assembly; and a reducing member for shifting the spinal rod into the coupling assembly; b) a cap inserter having a shiftable drive member to drive the cap member into the coupling assembly to lock the rod with respect to the coupling assembly; c) a throughbore of the reducer assembly into which the cap inserter drive member extends; and d) a releasable coupling between the reducer assembly and the cap inserter to allow the reducer assembly to first reduce the spinal rod prior to coupling of the cap inserter to the reducer assembly, and thereafter allowing the position of a portion of the cap inserter to be fixed into position with respect to the throughbore of the reducer assembly via the releasable coupling to drive the cap member into the coupling assembly for locking of the rod therein. - View Dependent Claims (2, 3, 4, 5, 6, 7)
-
-
8. A method for securing a spinal rod to a vertebra, the method comprising:
-
securing a fixation device to the vertebra; securing a coupling device to the fixation device; disposing the spinal rod within a rod reducing assembly and clamping the rod reducing assembly to the coupling device so that the spinal rod is positioned between the coupling device and a reducing member of the rod reducing assembly; shifting the rod reducing member into contact with the spinal rod so that the rod reducing member contacts the spinal rod at a plurality of spaced points; applying force to the rod reducing member to shift the spinal rod into the coupling device; driving a cap member into locking engagement with the coupling device at a point intermediate the plurality of spaced contact points between the rod reducing member and spinal rod. - View Dependent Claims (9, 10, 11, 12, 13)
-
Specification