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US 9,844,441 B2Granted
Expandable spinal implant system and method
AssigneeWarsaw Orthopedic, Inc.
InventorsJulien Prevost, Robert Loke
Life of this patent
Estimating the term…
Abstract
A spinal implant includes a first member having a wall that defines an axial cavity. A second member extends between a first end and a second end and defines a longitudinal axis. The second member is configured for disposal with the axial cavity and translation relative to the first member. A third member has an outer surface engageable with tissue and an inner surface disposed to dynamically engage the first end in response to the engagement of the outer surface with the tissue. Systems and methods are disclosed.
Claims20
A spinal implant comprising:
- a first member including a wall that defines an axial cavity;
- a second member extending between a first end and a second end and defining a longitudinal axis, the second member being configured for disposal with the axial cavity and translation relative to the first member, the first end including a cavity;
- and
- a third member including an outer surface being engageable with tissue and an inner surface disposed to dynamically engage the first end in response to the engagement of the outer surface with the tissue, the third member comprising a post extending from the inner surface, the post being movably disposed in the cavity to facilitate the dynamic engagement.
1 more element
A spinal implant comprising:
- an outer body including a wall that defines an axial cavity;
- an inner body extending between a first end and a second end and defining a longitudinal axis, the inner body being configured for disposal with the axial cavity and translation relative to the outer body, the first end includes an outer surface that defines lateral openings;
- and
- a cap including an outer surface being engageable with tissue and an inner surface including lateral posts being rotatable relative to the cap, the posts being disposed for translation within the openings to facilitate dynamic engagement of the outer surface with the tissue.
1 more element
A spinal implant comprising:
- a first member including a wall that defines an axial cavity and a lateral opening;
- a second member extending between a first end and a second end and defining a longitudinal axis, the second member being configured for disposal with the axial cavity and translation relative to the first member, the first end including a first cavity and a second cavity opposite the first cavity, the second member comprising a tubular wall that includes a slot, the slot having a gear rack that includes a plurality of teeth that are disposed therealong;
- a third member including an outer surface being engageable with tissue and an inner surface disposed to dynamically engage the first end in response to the engagement of the outer surface with the tissue, the third member comprising a post extending from the inner surface, the post being movably disposed in the cavity to facilitate the dynamic engagement;
- a moveable post that extends through the inner and outer surfaces and into the second cavity to facilitate the dynamic engagement;
- an instrument that extends through the lateral opening to engage the teeth, the instrument being rotatable relative to the first and second members to translate the second member relative to the first member in a manner that expands the spinal implant;
- and
- a band, the first member including an inner surface that defines a circumferential groove configured for disposal of the band, the second member comprising an outer surface that includes a helical gear having teeth engageable with the band to limit movement of the third member relative to the second member.
4 more elements
Dependencies are inferred from the claim text.