Surgical system and method
AssigneeWarsaw Orthopedic, Inc.
InventorsThomas A Carls, Newton H. Metcalf, Jr., Richard L. Brown, Jason M. May
Life of this patent
Estimating the term…
Abstract
A spinal construct includes a first member having a first thread form and an implant cavity configured for disposal of the spinal implant. A second member is engageable with a spinal implant and includes a second thread form configured for engagement with the first thread form. A gauge is coupled to the second member. The gauge is configured to measure a force between the second member and the spinal implant when the second member is engaged with the first member. The second thread form is timed with the first thread form to position the gauge in a selected orientation relative to the spinal implant. Systems and methods are disclosed.
Claims20
A spinal construct comprising:
- a first member comprising:
- a first thread form, and
- an implant cavity configured for disposal of a spinal implant;
- a second member engageable with the spinal implant, the second member extending along a longitudinal axis between a proximal portion and a distal portion, the distal portion comprising a second thread form configured for engagement with the first thread form, the second member comprising a socket, the socket extending parallel to the longitudinal axis;
- and
- a gauge positioned in the socket, the gauge being configured to measure a force between the second member and the spinal implant when the second member is engaged with the first member,
- wherein the second thread form is timed with the first thread form to position the gauge in a selected orientation relative to the spinal implant in use of the construct.
A surgical method comprising:
- coupling a first member to tissue;
- positioning a spinal implant in an implant cavity of the first member;
- and
- engaging a first thread form of the first member with a second thread form of a second member such that the second member applies a force to the spinal implant, the second member extending along a longitudinal axis between a proximal portion and a distal portion, the distal portion comprising the second thread form, the second member comprising a socket, the socket extending parallel to the longitudinal axis,
- wherein the second member comprises a gauge positioned in the socket, and
- wherein the second thread form is timed with the first thread form to position the gauge in a selected orientation relative to the spinal implant.
A spinal construct comprising:
- a bone screw comprising:
- a pair of arms,
- wherein the arms define a U-shaped implant cavity configured for disposal of a spinal rod, and
- wherein inner surfaces of the arms define a first thread form;
- and
- a setscrew engageable with the spinal rod, the setscrew extending along a central longitudinal axis between a proximal portion and a distal portion, the setscrew comprising:
- an inner surface;
- and
- an outer surface,
- wherein the outer surface of the setscrew defines a plurality of flat surfaces extending along the proximal portion, the flat surfaces being positioned radially about the central longitudinal axis,
- wherein the inner surface of the setscrew defines a socket extending through the proximal portion and into the distal portion, the socket being coaxial with the central longitudinal axis, and
- wherein the outer surface defines a second thread form extending along the distal portion, the second thread from being configured for engagement with the first thread form;
- and
- a gauge positioned within the socket, the gauge being configured to measure a force between the setscrew and the spinal rod when the setscrew is engaged with the bone screw,
- wherein the second thread form is timed with the first thread form to position the gauge in a selected orientation relative to the spinal rod in use of the construct.
Dependencies are inferred from the claim text.