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Femoral ring loader
| Details |
Inventors: Ralph, James D.; Tatar, Stephen;
Assignee: Third Millennium Engineering, LLC (Summit, NJ)
Primary Examiner: Philogene; Pedro
Assistant Examiner:
Attorney, Agent or Firm: Errico; Joseph P., Bortree; Timothy J.
An instrument for inserting an implant between vertebral bodies, including a holder adapted to hold the implant during insertion of the implant between the vertebral bodies, a retractor adapted to retract the holder away from the implant after the insertion, and a guard adapted to prevent the implant from being removed from between the vertebral bodies during the retraction. |
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DETAILED DESCRIPTION In an embodiment, the invention provides an instrument for inserting an implant between vertebral bodies.
The instrument includes a holder adapted to hold the implant during insertion of the implant between the vertebral bodies, a retractor adapted to retract the holder away from the implant after the insertion, and a guard adapted to prevent the implant from being removed from between the vertebral bodies during the retraction.
In an aspect, the retractor can include a coupling adapted to couple the holder to the guard and by which relative movement between the holder and the guard can be effected during the retraction.
Preferably, the retractor includes a threaded coupling that includes a bore and a screw that can thread within the bore, such that rotation of the screw within the bore effects relative movement between the holder and the guard.
In another aspect, the holder can include a plurality of arms.
The guard can include a shaft adjacent the arms, the shaft having an engagement surface.
The retractor can include a threaded bore and a screw that can thread within the bore, the screw having an end that engages the engagement surface of the shaft.
Preferably, rotation of the screw within the bore moves the arms relative to the shaft.
In still another aspect, the guard can include a shaft having a proximal end and a distal end.
The holder can include a plurality of arms, each having a distal end, the arms being adapted to cooperate to hold the implant using the distal ends of the arms such that the implant is adjacent the distal end of the shaft.
The retractor can include a bore and a screw that can thread within the bore and engage the proximal end of the shaft.
Preferably, rotation of the screw within the bore effects the retraction by pulling the arms alongside the shaft; and during the retraction, the distal end of the shaft can engage the implant to prevent the implant from being removed from between the vertebral bodies.
In yet another aspect, the guard can include a shaft having a longitudinal axis, a proximal end having an engagement surface, and a distal end
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