Reduction system for spondylolisthesis
AssigneeSpinal Simplicity, LLC
InventorsTodd Moseley, Jeffrey David Lee, Melissa Frock
Life of this patent
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Abstract
A system and method for reducing spondylolisthesis. The system includes a bracket comprising a first opening and a second opening, a first and second rod, and a first and second knob. The system may be placed onto a patient's back, the rods may be inserted through the first opening and the second opening and further into a first vertebral part and a second vertebral part. Tightening of a first knob and a second knob on the first and second rod allow for repositioning of the vertebra. Once repositioned, an interspinous implant may be inserted into the interspinous process space, connecting the vertebrae.
Claims20
A spondylolisthesis reduction system comprising:
- a first bracket having a bottom surface configured to contact a back of a patient, the first bracket comprising at least one opening;
- a unitary first rod being received through the at least one opening, said unitary first rod having a sharpened distal end configured to be inserted into a first vertebral part of a first vertebra and a threaded portion extending proximally from the sharpened distal end;
- a unitary second rod being received through the at least one opening, said unitary second rod having a proximal end, a sharpened distal tip configured to be inserted into a second vertebral part of the first vertebra, and a threaded portion extending proximally from the sharpened distal end;
- and
- a first knob having a first lumen therethrough, said first knob receiving the unitary first rod through the first lumen,
- wherein when said first knob is tightened onto the threaded portion, said first knob abuts the first bracket, pulls the unitary first rod proximally, and is configured to reposition the first vertebra.
A method for spondylolisthesis reduction in a patient comprising:
- providing posterior access to a spine of the patient;
- placing a first bracket onto the patient to contact a bottom surface of the first bracket with a back of the patient, the first bracket comprising at least one opening;
- providing a unitary first rod having a proximal end, a sharpened distal end, and a threaded portion extending proximally from the sharpened distal end, and a first knob having a first lumen therethrough having internal threads;
- providing a unitary second rod having a proximal end, a sharpened distal end, and a threaded portion extending proximally from the sharpened distal end;
- inserting the unitary first rod through the at least one opening and inserting the sharpened distal end into a first vertebral part of a first vertebra;
- inserting the unitary second rod through the at least one opening and inserting the sharpened distal end into a second vertebral part of the first vertebra;
- tightening the first knob onto the threaded portion of the unitary first rod to advance the first knob from the proximal end towards the sharpened distal end;
- and
- as the first knob abuts the first bracket, leveraging the first bracket against the patient to pull the unitary first rod proximally to reposition the first vertebra.
A system for spondylolisthesis reduction comprising:
- at least one bracket configured to be placed onto a patient substantially over at least a first vertebral part of a first vertebra, the at least one bracket having a bottom surface configured to contact a back of the patient;
- a unitary first rod having a proximal end, a pointed distal tip, and a threaded portion extending proximally from the pointed distal tip, said unitary first rod being inserted through the at least one bracket into the first vertebral part;
- a unitary second rod having a proximal end, a pointed distal tip, and a threaded portion extending proximally from the pointed distal tip, said unitary second rod being inserted through the at least one bracket into a second vertebral part of the first vertebra;
- a first knob having an internally threaded lumen receiving the unitary first rod therethrough;
- and
- a second knob having an internally threaded lumen receiving the unitary second rod therethrough,
- wherein pulling at least one of the unitary first rod or the unitary second rod is configured to reposition the first vertebra.
Dependencies are inferred from the claim text.