Back to results
US 11,109,894 B2Granted
Apparatus, system, and method for spinal vertebrae stabilization
AssigneeDr. Bryan Barnes PC
InventorBryan Barnes
Life of this patent
Estimating the term…
Abstract
Provided are improved pedicle screws or lateral mass screws, systems and methods for stabilizing spinal vertebrae, such as a pedicle or lateral vertebral mass, during minimally invasive spinal surgery. For example, provided is a pedicle screw or lateral mass screw having a screw shaft comprising an elongated threaded body having a vertical axis, a polyaxial screw head comprising two opposite walls that define a concave channel, and two semi-rigid, non-wire, elongated projections extending from two opposite walls of the polyaxial screw head at a positive angle in relation to a horizontal plane.
Claims6
A method comprising:
- providing a pedicle screw or lateral mass screw comprising:
- a screw shaft comprising an elongated threaded body having a vertical axis;
- a polyaxial screw head comprising two opposite walls that define a concave channel, wherein each of the two opposite sidewalls include a respective top surface that defines a horizontal plane, wherein the horizontal plane is perpendicular to the vertical axis;
- and
- two semi-rigid elongated projections extending from the two opposite walls at a positive angle in relation to the horizontal plane, wherein at least a portion of each of the two semi-rigid elongated projections is above the horizontal plane, and wherein the two semi-rigid elongated projections are configured to have a height that is at or above a level of a skin incision after implantation of the pedicle screw or lateral mass screw in a pedicle or lateral mass;
- providing a hand-held fixation tool comprising:
- a first scissor arm having a first manual gripping end and a first distal receiving shaft comprising a first bore, wherein a first of the two semi-rigid elongated projections of the polyaxial screw is sized to fit within the first distal receiving shaft;
- and
- a second scissor arm having a second manual gripping end and a second distal receiving shaft comprising a second bore, wherein a second of the two semi-rigid elongated projections of the polyaxial screw is sized to fit within the second distal receiving shaft, wherein the first and second scissor arms are pivotably coupled about a pivot axis;
- implanting the pedicle screw or lateral mass screw in a spine by screwing the pedicle screw or lateral mass screw into a pedicle or lateral vertebral mass;
- and
- securing a spinal fixation element to the polyaxial screw head by at least:
- inserting the first semi-rigid elongated projection into the first bore of first distal receiving shaft of the first scissor arm;
- inserting the second semi-rigid elongated projection into the second bore of the second distal receiving shaft of the second scissor arm;
- and
- pushing the spinal fixation element into the polyaxial screw head using the hand-held fixation tool.
13 more elements
Dependencies are inferred from the claim text.