Polyaxial Bone Screw with Lateral Connector
AssigneeAlphatec Spine, Inc.
InventorsThomas Purcell, Darren Reimers
Life of this patent
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Abstract
A polyaxial screw body includes a side wall defining a lumen having a first end and a second end. An opening disposed at the first end of the lumen, includes an interior surface disposed in the side wall thereabout. The interior surface is adapted to accommodate a head portion of a pedicle screw. A transverse channel extends from a first aperture through the side wall to a second aperture and is adapted to accommodate a portion of a fixation rod therebetween. A lateral connector extending integrally from the side wall.
Claims20
A body member of a spinal screw for receiving a fixation rod, comprising:
- a side wall forming a lumen in a proximal end that is configured to receive the spinal fixation rod and a setscrew and a distal end that is configured to couple with the spinal screw;
- a transverse channel extending from a first aperture in the side wall to a second aperture in the side wall that is configured to permit passage of the fixation rod therethrough;
- and
- a lateral connector including a tubular shape integral with the side wall and extending away from the side wall at an angle relative to the transverse channel.
A sacral to lumbar fixation system comprising:
- a pedicle screw with a first head portion at a proximal end and a first threaded portion at a distal end for attachment to a lumbar vertebra;
- a first body member defined by
- a first side wall forming a first lumen in a proximal end that is configured to receive a fixation rod and a first setscrew and a distal end that is configured to couple with the first head portion of the pedicle screw,
- a first transverse channel in a proximal end extending from a first aperture in the first side wall to a second aperture in the first side wall that is configured to permit passage of the fixation rod therethrough, and
- a lateral connector including a tubular shape integral with the first side wall and extending away from the first side wall at an angle relative to the first transverse channel;
- a sacral screw with a second head portion at a proximal end and a second threaded portion at a distal end for attachment to a sacrum;
- and
- a second body member defined by a second side wall forming a second lumen in a proximal end that is configured to receive the lateral connector and a second setscrew, a distal end that receives the second head portion, and a second transverse channel in the proximal end that extends from a first aperture in the second side wall to a second aperture in the second side wall configured to permit passage of the lateral connector therethrough.
Dependencies are inferred from the claim text.