Surgical instrumentation and method for treatment of the spine
First Claim
1. Instrumentation for treatment of the spine, comprising:
- an elongate member extending along a longitudinal axis and including a deformable distal end portion having an initial configuration for placement adjacent a spinal structure and a deformed configuration defining at least one transverse projection for transverse displacement of at least a portion of the spinal structure.
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Accused Products
Abstract
Instrumentation for treatment of the spine, including an elongate member having a deformable distal end portion at least partially formed of a flexible and preferably elastic material. The distal end portion has an initial configuration for placement adjacent a vertebral body and a deformed configuration defining at least one outwardly extending projection for displacement of at least a portion of the vertebral body. The elongate member preferably comprises a rod member, a sleeve member and an actuator mechanism for imparting relative linear displacement between the rod and sleeve members to effect outward deformation of the distal end portion of the sleeve member. In one embodiment, the instrumentation is used to compact cancellous bone to form a cavity within a vertebral body. In another embodiment, the instrumentation is used to reduce a compression fracture. In yet another embodiment, the instrumentation is used to distract a disc space between adjacent vertebral bodies.
269 Citations
53 Claims
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1. Instrumentation for treatment of the spine, comprising:
an elongate member extending along a longitudinal axis and including a deformable distal end portion having an initial configuration for placement adjacent a spinal structure and a deformed configuration defining at least one transverse projection for transverse displacement of at least a portion of the spinal structure. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. Instrumentation for treatment of the spine, comprising:
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a first member;
a second member having a distal end portion engaged with said first member, said distal end portion having an initial configuration for placement adjacent a spinal structure and an expanded configuration for displacement of at least a portion of the spinal structure; and
wherein relative displacement between said first and second members causes said distal end portion to reform from said initial configuration toward said expanded configuration. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43)
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30. The instrumentation of 28, wherein said distal end portion of said second member comprises a pair of said flexible strips of material disposed generally opposite one another, said flexible strips of material buckling outwardly in response to said relative displacement between said first and second members to form a pair of said outward deformations disposed generally opposite one another.
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44. Instrumentation for treatment of the spine, comprising:
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a member including a deformable distal end portion having an initial configuration for positioning adjacent a spinal structure and a deformed configuration for displacing the spinal structure; and
means for mechanically deforming said distal end portion from said initial configuration toward said deformed configuration to displace at least a portion of the spinal structure in at least one predetermined direction.
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45. A method for treatment of the spine, comprising:
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providing an instrument including a distal end portion, the distal end portion having an insertion configuration and a deformed configuration;
positioning the distal end portion adjacent a spinal structure while in the insertion configuration; and
deforming the distal end portion toward the deformed configuration to displace at least a portion of the spinal structure. - View Dependent Claims (46, 47, 48, 49, 50, 51, 52, 53)
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Specification