Crossbar spinal prosthesis having a modular design and related implantation methods
OwnerMark Kuiper, David Yager +8inventors
InventorsMark Kuiper, David Yager, Leonard Tokish, David Rosler, Susan Rogers, Christopher Ralph, Mark Charbonneau, Richard Broman, David Stinson, Mark Reiley
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Abstract
Modular spinal prosthesis having one of both of adaptable and configurable components are provided. The modular spinal prosthesis described herein provide an artificial articular configuration to replace damaged, worn or otherwise removed spinal facet elements.
Claims62
A facet joint prosthesis to replace, on a vertebral body, a portion of a natural facet joint, comprising:
- a support component sized to span a portion of the vertebral body and adapted to receive a pair of prosthetic facet elements;
- and
- a pair of prosthetic facet elements positionable relative to the support component to replace a portion of a natural facet joint.
An adaptable spinal facet joint prosthesis, comprising:
- a crossbar having a first end and a second end;
- a pair of cephalad prosthesis elements each having a bone engaging end and an end adapted to couple to the crossbar;
- and
- a pair of caudal prosthesis elements each having a surface adapted to receive a crossbar end and a fixation element.
An adaptable spinal facet joint prosthesis according to claim Al wherein the crossbar first end and second end have a round surface to engage with the caudal prosthesis surface adapted to receive a crossbar end.
A spinal prosthesis, comprising:
- a first cephalad prosthesis element and a second cephalad prosthesis element;
- a first caudal prosthesis and a second caudal prosthesis;
- and
- a crossbar element connected to the first and second cephalad prosthesis elements, the crossbar element having a first end in contact with the first caudal prosthesis and a second end in contact with the second prosthesis wherein at least one of the first cephalad prosthesis element, the second cephalad prosthesis element, the caudal prosthesis, the second caudal prosthesis, and the crossbar element having a configurable portion.
A spinal prosthesis, comprising:
- a pair of cephalad prosthesis members each comprising a distal end for securing to a portion of the spine and a proximal end comprising a bearing element;
- a pair of caudal prosthesis members each comprising a fixation element for securing to a portion of a spine and a bearing element adapting to engage the cephalad prosthesis member bearing element;
- and
- a crossbar connected between the cephalad prosthesis members.
Dependencies are inferred from the claim text.