Method and apparatus for minimally invasive posterolateral spinal fusion
First Claim
1. A medical device assembly for delivering bone graft, comprising:
- a delivery shaft, said delivery shaft having a tool insertion end and a graft delivery end, said delivery shaft aligned with a central axis further comprising a curvature, said central axis defining a shaft pathway extending between said tool insertion end and said graft delivery end, said delivery shaft further comprising a handle,said delivery shaft further comprising a retention lock; and
a first curved element having a first end, a second end, and an exterior surface, said first curved element having a curvature aligned with said curved central axis, said first curved element being axially slidable through said shaft pathway, said first curved element further comprising a handle, wherein said delivery shaft retention lock is adapted to retain said first curved element from sliding.
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Accused Products
Abstract
Certain embodiments of the invention relate to a surgical procedure resulting in the fusion of transverse processes. The disclosure herein presents novel approaches for accessing transverse processes of the spine, novel methods for the delivery of fusion material for the fusion of said transverse processes, and novel tools to facilitate the procedure. Certain embodiments of the invention include a graft delivery assembly, which has a delivery shaft, delivery sheath, and at least one curved rod. Bony material is position with a graft delivery assembly, in which retraction of the delivery shaft or sheath places the bone fusion material to the fusion site. The graft delivery assembly further includes features to decorticate and prepare the bone surface for fusion.
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Citations
20 Claims
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1. A medical device assembly for delivering bone graft, comprising:
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a delivery shaft, said delivery shaft having a tool insertion end and a graft delivery end, said delivery shaft aligned with a central axis further comprising a curvature, said central axis defining a shaft pathway extending between said tool insertion end and said graft delivery end, said delivery shaft further comprising a handle, said delivery shaft further comprising a retention lock; and a first curved element having a first end, a second end, and an exterior surface, said first curved element having a curvature aligned with said curved central axis, said first curved element being axially slidable through said shaft pathway, said first curved element further comprising a handle, wherein said delivery shaft retention lock is adapted to retain said first curved element from sliding. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A medical device assembly for delivering bone graft, comprising:
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a delivery shaft, said delivery shaft having a tool insertion end and a graft delivery end, said delivery shaft aligned with a central axis further comprising a curvature, said central axis defining a shaft pathway extending between said tool insertion end and said graft delivery end, said delivery shaft further comprising a handle; a first curved element having a first end, a second end, and an exterior surface, said first curved element having a curvature aligned with said curved central axis, said first curved element being axially slidable through said shaft pathway, said first curved element further comprising a pathway extending between said first end and said second end, and defining a hollow form with an interior surface;
said first curved element further comprising a handle; anda second curved element having a first end, a second end, and an exterior surface, said second curved element being axially slidable through said first curved element pathway. - View Dependent Claims (13, 14, 15, 16, 17)
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18. A method of placing bony material between adjacent transverse processes, comprising:
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making an incision in the skin on the posterior side of a patient offset from the medial plane and in proximity to a transverse process; creating a pathway to a first transverse process through said incision with an assembly; extending said pathway to at least a second transverse process adjacent to said first transverse process with said assembly; and dispensing bony material through said pathway depositing bony material between said first transverse process and said second transverse process. - View Dependent Claims (19, 20)
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Specification