Back to results
US 12,727,925 B2Granted
MIS multi-level compressor / distractor
AssigneeAstura Mgoical, Inc
InventorsKeith Klausman, Thomas Purcell, Joel Gambrell
Life of this patent
Estimating the term…
Abstract
A multi-level compressor/distractor instrument that provides both linear and lordotic/kyphotic induced compression and distraction.
Claims19
A compressor/distractor instrument providing compression and distraction of vertebrae in two directions comprising:
- a compressor/distractor device having:
- a ratcheting rack having a ratchet coupled to a slide rail;
- a left pivoting arm being fixedly coupled to the slide rail;
- a right pivoting arm being directly coupled to the ratchet;
- a threaded shaft and nut coupled to the left and right pivoting arms, the left and right pivoting arms being configured to travel up or down the threaded shaft as the nut is turned to change an angular direction;
- and
- screw extenders coupled to the left and right pivoting arms;
- wherein the compressor/distractor device moves the vertebrae in two directions, a first direction is linear induced compression and distraction of the vertebrae provided by movement of the ratchet and the right pivoting arm on the slide rail toward or away from the fixed left pivoting arm, and the second direction is lordotic/kyphotic induced compression and distraction of the vertebrae provided by movement of the left and right pivoting arms up or down the threaded shaft.
5 more elements
A compressor/distractor instrument providing compression and distraction of vertebrae in two directions comprising:
- a compressor/distractor device having:
- a ratcheting rack having a ratchet coupled to a slide rail;
- a left pivoting arm being fixedly coupled to the slide rail;
- a right pivoting arm being directly coupled to the ratchet;
- a threaded shaft and nut coupled to the left and right pivoting arms, the left and right pivoting arms being configured to travel up or down the threaded shaft as the nut is turned to change an angular direction;
- screw extenders coupled to the left and right pivoting arms;
- and
- compressor/distractor support tubes coupled to the compressor/distractor device having a tubular body with a central lumen sized to fit within pedicle screw extenders and provide bending support to the pedicle screw extenders;
- wherein the compressor/distractor device and the compressor/distractor support tubes move the vertebrae in two directions, a first direction is linear induced compression and distraction of the vertebrae provided by movement of the ratchet and the right pivoting arm on the slide rail toward or away from the fixed left pivoting arm, and the second direction is lordotic/kyphotic induced compression and distraction of the vertebrae provided by movement of the left and right pivoting arms up or down the threaded shaft.
6 more elements
A compressor/distractor instrument providing compression and distraction of vertebrae in two directions comprising:
- a compressor/distractor device configured to move the vertebrae in two directions:
- a first direction is linear induced compression and distraction of the vertebrae provided by movement of a ratchet and a right pivoting arm on a slide rail toward or away from a fixed left pivoting arm:
- and
- a second direction is lordotic/kyphotic induced compression and distraction of the vertebrae provided by angular movement of screw extenders coupled to the left and right pivoting arms, the left pivoting arm being fixedly coupled to the slide rail and the right pivoting arm being directly coupled to the ratchet, the left and right pivoting arms being coupled to a threaded shaft and nut, the left and right pivoting arms being configured to travel up or down the threaded shaft by rotating the nut to change an angular direction of the screw extenders.
1 more element
Dependencies are inferred from the claim text.