Interspinous process implant and fusion cage spacer

摘要

A spinal implant includes an elongated body dimensioned and configured to function as a spacer, for placement in a target interspinous process space, between two adjacent spinous processes, a distal anchor associated with a distal end of the body, and a proximal anchor mounted for longitudinal movement along the body between a first position spaced apart from the head and a second position approximated with the head, adapted to compress the two adjacent spinous processes, in conjunction with the distal anchor.

主权项

1. A spinal implant comprising:
a) an elongated body dimensioned and configured to function as a spacer, for placement in a target interspinous process space, between two adjacent spinous processes and having a longitudinal axis extending therethrough, wherein an outer surface of the body is threaded; b) a distal anchor associated with a distal end portion of the body including two radially-deployable blades adapted for engaging adjacent spinous processes, wherein the two radially-deployable blades are mounted to rotate about a common pivot axis extending transverse to the longitudinal axis of the body between a stowed position aligned with the longitudinal axis of the body and a deployed position projecting radially outward from the body at an angle with respect to said longitudinal axis, wherein each of the radially-deployable blades is provided with proximally directed spikes; and c) a proximal anchor mounted for longitudinal movement along the body between a first position spaced apart from the distal end portion of the body and a second position approximated with the distal end portion of the body, adapted to compress the two adjacent spinous processes, in conjunction with the distal anchor, wherein the proximal anchor includes an axially slideable plate and a nut threaded to the threaded outer surface of the body for axial movement of the proximal anchor by rotational movement of the nut, wherein the axially slideable plate is between the nut and the distal anchor axially, and wherein the threaded outer surface of the body includes at least one flat portion engaged with a corresponding flat portion of the axially slideable plate for inhibiting relative rotation of the axially slideable plate and the body.