Spinous process device

Abstract

A spinal device in which a plate is placed on both sides of the lamina spinous process. The plates include horizontal and diagonal slots through which anchoring screws may be placed and secured. The screws may pass through the base of the spinous process and lamina structure. The plates may have cut-out portions on the ventral side to accommodate the lamina when reduction is performed. The diagonal slots preferably have an apex proximate to the dorsal side and open at the ventral side. The two plates can be mirror images of each other, and, when secured together by the screws, forms a stable construct that can sandwich the spinous process.

1 . A spinal device comprising a first plate having a dorsal side, a ventral side, a middle portion, a concave surface in a middle portion on the ventral side of the first plate, and a first hooked slot open to the ventral side. 
     
     
         2 . The spinal device of  claim 1 , wherein the first plate further includes at least one closed slot formed therein, wherein the closed slot is closed to both the dorsal and ventral side. 
     
     
         3 . The spinal device of  claim 1 , wherein the first hooked slot is located in a middle portion of the first plate. 
     
     
         4 . The spinal device of  claim 1 , wherein a second concave surface is located in a distal portion on the ventral side of the first plate. 
     
     
         5 . The spinal device of  claim 1 , wherein the first plate further includes at least one closed slot formed therein, wherein the closed slot is closed to both the dorsal and ventral side; and a second hooked slot located in a distal portion of the first plate, wherein the second hooked slot is open to the ventral side. 
     
     
         6 . The spinal device of  claim 5 , wherein the at least one closed slot is formed in a distal portion of the first plate. 
     
     
         7 . A spinal device comprising a first plate having a dorsal side, a ventral side, and a first hooked slot comprising at least two horizontal slots branching off from a diagonal slot. 
     
     
         8 . The spinal device of  claim 7 , wherein the first hooked slot is closed to both the dorsal and ventral side, and the first plate further includes at least one closed slot formed therein, wherein the closed slot is closed to both the dorsal and ventral side. 
     
     
         9 . The spinal device of  claim 7 , wherein the first plate further includes a second hooked slot comprising at least one horizontal slots branching off from a diagonal slot. 
     
     
         10 . The spinal device of  claim 9 , wherein the second hooked slot is located in a distal portion of the first plate. 
     
     
         11 . The spinal device of  claim 7 , wherein the first plate further includes at least one closed slot formed therein, wherein the closed slot is closed to both the dorsal and ventral side;
 and a second hooked slot located in a distal portion of the first plate, wherein the second hooked slot is open to the ventral side.   
     
     
         12 . The spinal device of  claim 11 , wherein the at least one closed slot is formed in a distal portion of the first plate.