Spinous process fusion devices and methods thereof

Abstract

Devices and methods for positioning and immobilizing at least two adjacent vertebrae using adjacent spinous processes. The method includes positioning a spinous process fusion device in an interspinous space between adjacent spinous processes including a rod and a first wing, and attaching a second wing to the rod, for example, using a ratcheting mechanism.

What is claimed is: 
     
         1 . An implantable device comprising:
 a central barrel;   rod coupled to the central barrel;   a first wing coupled to the rod; and   a second wing coupled to the rod,   wherein the central barrel is configured to distract adjacent spinous processes, and wherein the rod is rotated to move from a first position to a second position.   
     
     
         2 . The device of  claim 1 , further comprising a locking mechanism that is a cam ratcheting lock and wherein the second wing is secured to the rod via rotation of the rod. 
     
     
         3 . The device of  claim 2 , wherein ratchet receivers of the rod are positioned on opposing sides and are adapted to couple with ratcheting members associated with the second wing. 
     
     
         4 . The device of  claim 3 , wherein the ratchet receivers are arranged along a longitudinal axis of the rod. 
     
     
         5 . The device of  claim 4 , wherein the rod is rotated 90 degrees to move from the first position to the second position. 
     
     
         6 . The device of  claim 1 , wherein a first portion of the rod comprises a head configured to receive an insertion instrument and an actuation instrument. 
     
     
         7 . The device of  claim 1 , wherein the first wing has a cutout for stacking more than one of the implantable devices. 
     
     
         8 . The device of  claim 1 , wherein the first wing angulates about a longitudinal axis of the first wing. 
     
     
         9 . The device of  claim 1 , wherein the first wing is rotatably connected to the rod. 
     
     
         10 . The device of  claim 1 , wherein the barrel extends on either side of the rod, the first side comprising at least one insertion instrument connecting portion and the second side having at least one insertion instrument connecting portion. 
     
     
         11 . The device of  claim 11 , further comprising an insertion instrument configured to couple to the first side and the second side of the central barrel. 
     
     
         12 . The device of  claim 1 , further comprising a compressor instrument configured to couple to the rod and the second wing. 
     
     
         13 . An implantable implant comprising:
 a rod;   a wing comprising an opening, wherein the rod is disposed through the opening; and   a central barrel having a first side and a second side, the central barrel having an opening for receiving a portion of the rod, wherein the central barrel is configured and dimensioned to distract adjacent spinous processes, wherein the rod is rotated from a first position to a second position.   
     
     
         14 . The device of  claim 13 , wherein the central barrel includes a first side and a second side, wherein the first side includes at least one insertion instrument connecting portion and the second side having at least one insertion instrument connecting portion. 
     
     
         15 . The device of  claim 13 , wherein the rod is rotated 90 degrees to move from the first position to the second position. 
     
     
         16 . The device of  claim 14 , wherein the implantable device further comprises a second wing coupled to the rod, 
     
     
         17 . The device of  claim 16 , wherein the second wing comprises teeth on a surface of the second wing facing the wing. 
     
     
         18 . The device of  claim 14 , wherein the rod is tapered to a frustoconical tip. 
     
     
         19 . The device of  claim 14 , further comprising an insertion instrument configured to couple to the first side and the second side of the central barrel. 
     
     
         20 . The device of  claim 14 , further comprising a compressor instrument configured to couple to the rod and the second wing, wherein the central barrel is configured to be positioned in an interspinous space.