Spinal implant system and method
AssigneeWarsaw Orthopedic, Inc.
InventorsLarry T. McBride, Rex W. Armstrong, Domagoj Coric, Robert M. Loke
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Abstract
A spinal implant includes a receiver having a first arm connected to a first extension and a second arm connected to a second extension. The arms are connected to the extensions via a break away surface. The arms include a proximal most end surface and the receiver includes an implant receiving surface. The proximal most end surface and the implant receiving surface defining an implant cavity. The break away surface is disposed within the implant cavity. In some embodiments, systems, spinal constructs and methods are disclosed.
Claims20
A spinal implant comprising:
- a receiver including a first arm connected to a first extension and a second arm connected to a second extension, the arms being connected to the extensions via a break away surface,
- the arms including a proximal shoulder having a proximal most end surface and the receiver further including an implant receiving surface, the proximal most end surface and the implant receiving surface defining an implant cavity,
- the break away surface being disposed within the implant cavity, and
- the proximal shoulder including an inner circumferential wall spaced outwardly from the break away surface and forming a shroud.
A bone fastener comprising:
- a receiver including a first arm connected to a first extension and a second arm connected to a second extension, the arms being connected to the extensions via a break away surface,
- the arms including a proximal shoulder having a proximal most end surface and the receiver further including an implant receiving surface, the proximal most end surface and the implant receiving surface defining an implant cavity, the break away surface being disposed within the implant cavity, and the proximal shoulder including an inner circumferential wall spaced outwardly from the break away surface and forming a shroud;
- and
- a threaded shaft connectable with the receiver and engageable with vertebral tissue.
A spinal implant comprising:
- a receiver including a first arm connected to a first extension and a second arm connected to a second extension, the arms being connected to the extensions via a break away surface,
- the receiver further including a non-threaded outer surface and an inner surface having a selected thread configuration extending along at least a portion of the arms and the extensions,
- the break away surface defining a shear ring including a helical configuration being disposed in helical alignment with the thread configuration.
Dependencies are inferred from the claim text.