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EP0565149A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Perpendicular rod connector for spinal fixation device

Assignee: Bristol Myers Squibb Co
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Filing: 1993-03-05
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Granted: —
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Expires: 2013-03-05
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Abstract

Abstract The spinal rod system and perpendicular rod connector (10) of the invention provides for a first rod (18) to be connected by two pedicle screws (12) transverse to the spine across a vertebra. The perpendicular connector (24) is then connected to the first rod (18) anywhere along the rod. The longitudinal spinal rod (30) is then connected to the perpendicular rod connector (24) using common connectors (22). The perpendicular connector (24) is slidable along the first rod (18). By using the perpendicular rod connector (24), the amount of bending and the tolerances required is reduced as the connector may be slid along the transverse rod (18) to accommodate the longitudinal rod (30). Known pedicle screws may be used with a slight bend placed in the transverse rod to accommodate the spinal column. Alternatively, the pedicle screws may be bent slightly such that a straight transverse rod may be used. By using the perpendicular rod connector and transverse rod arrangement, the amount of bending required on the longitudinal rod may be reduced to thereby shorten the entire procedure.

Inventors

  • 👤 Antony J. Lozier

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-01 23:17
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/56; A61B17/58; A61B17/68; A61B17/70; A61B17/7001; A61B17/7043

Claims Analysis

Total Claims: 10
Claim 1
Independent Claim 89 words
A system for functionally connecting a spinal rod to a vertebra, said system comprising a first fixation means connected to said vertebra, said first fixation means includes a bar carried transverse to a longitudinal dimension of a patients's spinal column, said system further including a secondary fixation means carried by said bar, said secondary fixation means being shiftable on said bar relative to said first fixation means, and means for connecting said spinal rod to said secondary fixation means such that said spinal rod is transverse to said rod.
Claim 2
Dependent Claim 30 words
The system of Claim 1 wherein said first fixation means includes at least two screws for seating within each pedicle portion of said vertebra, said bar extending between said screws.
Claim 3
Dependent Claim 54 words
The system of Claim 1 wherein said secondary fixation means comprises a connector having a body with an opening for accommodating said spinal fixation rod, a pair of hooks extend outwardly from a wall of said body, said hooks clampingly engage said rod such that said spinal fixation rod is transverse to said rod.
Claim 4
Dependent Claim 44 words
The system of Claim 3 wherein said connector includes a ledge adjacent each hook, said hooks extending from said wall such that said hooks face in opposite directions and are spaced from one another along said wall, said hooks yield to accept said rod.
Claim 5
Dependent Claim 103 words
A rod connector for connecting a spinal fixation rod to a support rod in a generally perpendicular orientation, said connector including a body having an opening therethrough for accommodating said spinal fixation rod, said rod connector further including hook means extending outwardly from a rear wall of said body for clamping engagement with said support rod between said hook means and said body, said hook means being yieldable to pass said support rod between said body and a distal tip of said hook means, wherein said hook means defines a cavity for accommodating said support rod, said cavity being transverse to said opening.
Claim 6
Dependent Claim 45 words
The rod connector of Claim 5 wherein said hook means includes a pair of arcuate hooks facing in opposite directions and spaced along the rear wall of said body, each of said hooks including a distal tip spaced from said rear wall and a apex.
Claim 7
Dependent Claim 32 words
The rod connector of Claim 6 wherein the distance between the distal tips of said hooks and said rear wall is less than the distance between the apexes and the rear wall.
Claim 8
Dependent Claim 20 words
The rod connector of Claim 5 wherein said body includes recesses therein for accommodating mating projections from a clamp member.
Claim 9
Dependent Claim 42 words
A bone screw for use with spinal fixation devices, said screw including a threaded shaft and an integral head, said head defining a seat for accommodating a spinal rod, the improvement wherein said head and screw are angled relative to one anther.
Claim 10
Dependent Claim 25 words
The bone screw of Claim 9 wherein said head and shaft are angled relative to one another in the range between 10 and 25 degrees.

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