Rod persuader
AssigneeAesculap Implant Systems, LLC
InventorsAndrew Dauster, Matthew Kovach, Paul Weaver
Life of this patent
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Abstract
A rod persuader assembly includes a tubular body, an inner shaft and an outer shaft. The inner shaft is axially displaceable relative to the tubular body, and has a gripping end and a handle end. The outer shaft is axially displaceable relative to the tubular body, and has a rod reducing end. In one embodiment, the handle end is rotatable relative to the gripping end. In another embodiment, the gripping end includes a cylindrical socket. In yet another embodiment, the rod persuader assembly is operable in two separate and independent stages to secure the instrument to an implant, and advance a rod into the implant.
Claims23
A rod persuader assembly comprising:
- a tubular body having a proximal end and a distal end opposite the proximal end;
- an inner shaft disposed within the tubular body and axially displaceable relative to the tubular body, the inner shaft having a gripping mechanism disposed at a distal end of the inner shaft, a handle mechanism disposed at a proximal end of the inner shaft that is opposite the distal end of the inner shaft, and a longitudinal axis extending from the distal end of the inner shaft to the proximal end of the inner shaft,
- wherein the tubular body includes at least one boss extending away from an outer surface of the tubular body;
- and
- an outer shaft axially displaceable relative to the tubular body, the outer shaft having a proximal end, a distal end opposite the proximal end of the outer shaft, and a closed slot defined therein and located intermediate the proximal and distal ends of the outer shaft,
- wherein the tubular body and the inner shaft are disposed within the outer shaft, the at least one boss of the tubular body extending through the closed slot of the outer shaft, the proximal end of the tubular body and the proximal end of the inner shaft extend beyond the proximal end of the outer shaft, and the distal end of the tubular body and the distal end of the inner shaft extend beyond the distal end of the outer shaft,
- wherein the gripping mechanism comprises a collet having a plurality of branches radially displaceable relative to the longitudinal axis of the inner shaft between an open position and a closed position through rotation of the handle mechanism relative to the tubular body about the longitudinal axis of the inner shaft, and
- wherein the proximal end of the inner shaft is separate and distinct from the distal end of the inner shaft and is rotatably coupled to the distal end of the inner shaft, the proximal end of the inner shaft being rotatable independently of the distal end of the inner shaft.
Dependencies are inferred from the claim text.