Labrum retracting burr

Abstract

A rotary abrader allowing for improved visibility during surgery and improved aspiration of waste material. This is accomplished by providing a hood or sheath formed of a clear material and available in various shapes and sizes. The clear hood or sheath is also provided with a flattened, angled portion at a tip of the hood, to assist with retraction of the labral tissue while burring the glenoid rim. Slots are provided on the cannulated tube to provide aspiration of waste material and used to attach the hood to the cannulated tube.

1 . An apparatus for abrading tissue, comprising:
 an inner assembly rotatably positioned within an outer assembly, wherein an inner tube of the inner assembly is removable from an outer tube of the outer assembly;   a hub formed at a proximal end of each of the inner assembly and the outer assembly;   an abrading element located at a distal end of an inner tube of the inner assembly; and   a hood located at a distal end of an outer tube of the outer assembly, wherein the hood is formed of a clear material and is provided with a distal tip that forms an angle with a central axis of the abrading element.   
     
     
         2 . The apparatus of  claim 1 , wherein the angle is of about 30 degrees. 
     
     
         3 . The apparatus of  claim 1 , wherein the distal tip has a first width and the hood has a second width, the first width being greater than the second width. 
     
     
         4 . The apparatus of  claim 1 , wherein the hood comprises polycarbonate. 
     
     
         5 . The apparatus of  claim 1 , wherein the hood may be different sizes to accommodate the abrading element. 
     
     
         6 . The apparatus of  claim 1 , wherein the hood comprises a proximal portion that extends about parallel to the central axis of the abrading element and surrounds at least a portion of the abrading element. 
     
     
         7 . The apparatus of  claim 1 , further comprising at least one aspiration port located near the distal end of the inner tube and extending axially from a lumen of the inner tube to an outer surface of the inner tube. 
     
     
         8 . The apparatus of  claim 7 , wherein debris may be aspirated through the at least one aspiration port into the lumen of the inner tube via suction. 
     
     
         9 . A method of glenoid repair, comprising the steps of:
 providing an abrading instrument in the vicinity of a glenoid labrum attached to a glenoid, the abrading instrument comprising a rotary cutter at a distal end of the abrading instrument and a clear hood attached to the abrading instrument, the clear hood comprising a substantially cylindrical portion surrounding part of the rotary cutter, and a flattened, angled portion located at a most distal end of the clear hood;   retracting the glenoid labrum with the flattened, angled portion of the clear hood; and   simultaneously, altering a shape of the glenoid with the rotary cutter.   
     
     
         10 . The method of  claim 9 , wherein the flattened, angled portion forms an angle of about 30 degrees with a central axis of the rotary cutter. 
     
     
         11 . The method of  claim 9 , wherein the flattened, angled portion is provided with side regions extending laterally from a central axis of the clear hood, to increase the contact area with the glenoid labrum. 
     
     
         12 . The method of  claim 9 , wherein the glenoid repair is a SLAP repair.