Interspinous implants
AssigneeZimmer Biomet Spine, Inc.
InventorsJustin Taber, Ryan Fredricey
Life of this patent
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Abstract
The present invention provides a spinous process implant and associated methods. In one aspect of the invention, the implant includes a spacer that is connectable to two extensions. One of the two extensions is connectable to the spacer at a first end and coupled to the spacer by a rotational connection. The other of the two extensions is movably connectable to the second end of the spacer and translatable over the outer surface of the spacer from the second end.
Claims20
An implant for placement between spinous processes of a spine comprising:
- a spacer of a first material comprising a first end with a first end terminal edge, a second end with a second end terminal edge, and an elongated slot extending from the first end to the second end terminal edge,
- a first extension of a second material having a superior lobe, an inferior lobe, a main body, and an aperture in the main body sized to receive the spacer, the first extension and the first end of the spacer cooperatively engaging to form a first mechanical lock to connect the first extension and the spacer;
- and
- a second extension of a third material having a superior lobe, an inferior lobe, and a span connecting the superior and inferior lobes, the second extension having a post extending into the elongated slot of the spacer to form a second mechanical lock to connect the second extension to the spacer,
- wherein at least the first material and the second material are different.
An implant for placement between spinous processes of a spine comprising:
- a tubular spacer formed by a sidewall comprising a first end and a second end distal from the first end, the sidewall comprising an anterior aspect, a superior aspect, a posterior aspect, and an inferior aspect, the first end and the second end of the tubular spacer forming opposed openings perpendicular to a longitudinal axis extending through the tubular spacer, the tubular spacer comprising at least one opening in the sidewall in communication with an interior of the tubular spacer to facilitate tissue in-growth;
- a first extension comprising an aperture disposed therein to rotatably receive and lock to the first end of the tubular spacer, the first extension including at least one tab extending radially inward to cooperatively engage at least one detent along the first end of the tubular spacer;
- and
- a second extension movably received on the second end of the tubular spacer at a terminal edge thereof, the second extension translatable over the sidewall and lockable to the spacer.
An implant for placement between spinous processes of a spine comprising:
- a spacer comprising a first end with a first end terminal edge, and at least one protrusion extending radially outward along a sidewall of the first end, a second end with a second end terminal edge, and an elongated slot extending from adjacent the first end to the second end terminal edge;
- a first extension comprising a superior lobe, an inferior lobe, a main body, and an aperture disposed in the main body for receiving the spacer, the first extension comprising a lock groove disposed on an inner sidewall of the aperture of the main body, that cooperatively engages the at least one protrusion upon rotation of the first extension relative to the spacer in a plane transverse to a longitudinal axis of the spacer to form a taper lock to connect the first extension and the spacer;
- and
- a second extension comprising a superior lobe, an inferior lobe, and a span connecting the superior and inferior lobes, the second extension comprising a post extending into the elongated slot to form a mechanical lock to connect the second extension to the spacer.
Dependencies are inferred from the claim text.