Interspinous implants with deployable wing

An apparatus adapted for placement in an interspinous space between adjacent spinous processes comprising:

• a first extension comprising a superior lobe and an inferior lobe, the first extension including an aperture, the superior lobe adapted to reside proximate a superior spinous process and the inferior lobe adapted to reside proximate an inferior spinous process;
• at least one arm having a first surface extending from the first extension, the at least one arm comprising a main body portion coupled to the first extension and a tapered portion that extends from the main body portion distal from the first extension, the main body portion having a length sufficient to transverse a space between the superior and inferior spinous process and the tapered portion terminating in a tip, the first surface comprising at least one groove;
• a foldable extension having a superior lobe pivotally connected to an inferior lobe to allow the foldable extension to move from a folded position to an unfolded position, each of the superior and inferior lobe comprising at least one protrusion movably engaged in the at least one groove, and
• a draw having a first end and a second end opposite the first end, the draw being connected to the foldable extension at the first end, the draw extending through the aperture of the first extension,
• wherein the draw is movable through the aperture to cause the at least protrusion of the superior lobe and the inferior lobe to move in the at least one groove such that the superior lobe and the inferior lobe unfold.

A method of treating spine disease comprising:

• providing an implant comprising a spacer having a first end, a second end, and a longitudinal axis extending from the first end to the second end, the spacer having a sidewall extending from the first end to the second end and generally defining a hollow interior, the sidewall having bluff edges at the first end, the implant further comprising a first extension having a superior lobe pivotally connected to an inferior lobe with a draw connected to the first extension and extending into the hollow interior, the first extension having a folded position for insertion of the implant and an unfolded position for deployment of the implant;
• inserting the spacer and the first extension in the folded position between spinous processes of adjacent vertebrae to provide both an extension stop and a flexion stop;
• moving the draw in the hollow interior of the spacer in a direction from the first end towards the second end to unfold the first extension by moving the superior lobe and the inferior lobe across the bluff edges until the first extension is unfolded in the deployment position;
• positioning a second extension at least partially over an outside surface of the sidewall of the spacer and inter-engaging the second extension directly to the spacer;
• translating the second extension axially towards the first extension so as to slide the second extension over a portion of the spacer to cause the first and second extension to engage with the spinous processes to fix the spacer to the spinous processes;
• and
• locking the second extension at a desired location along the spacer relative to the first extension.