Instruments for osteolysis repair

Abstract

A plug for plugging a hole of a bone or implant body during injection of an osteoregenerative material comprising, generally, a plug body, the plug body configured to plug a hole of the body to prevent osteoregenerative material from leaking through the hole, and a tail, the tail attached to the plug body for use in removing the plug body from the hole. In one embodiment, the plug body has an insertion cavity on a trailing end thereof for use in inserting the plug into a hole of the body. The plug body preferably has a frustoconical configuration. The plug body is preferably made of a resilient material, such as silicon.

1 - 18 . (canceled) 
     
     
         19 . A plug for plugging a hole of a bone or implant body during injection of an osteoregenerative material, comprising:
 a plug body formed from a resilient material, said plug body having a frustoconical configuration narrowing from a trailing end to a leading end for use in plugging a selected hole of the implant body to thereby prevent osteoregenerative material from leaking through the hole, and a shoulder extending along a rim of said trailing end of said plug body,   a tail formed from a cord, a distal portion of said cord embedded in said plug body for use in removing the plug body from the hole, said cord extending from said trailing end of said plug body, and   said plug body having an insertion cavity on said trailing end for use in inserting said plug into a selected hole of the body.   
     
     
         20 . The plug of  claim 19 , wherein said cord is embedded in said plug body substantially along an axis of said plug body and said insertion cavity is formed substantially along said rim of said plug body. 
     
     
         20 . (canceled) 
     
     
         21 - 26 . (canceled) 
     
     
         27 . A method of debriding osteolytic material from an osteolytic lesion in the vicinity of an acetabular shell implant, the shell having fixation holes therethrough, comprising,
 inserting a curette through at least one hole of the acetabular shell in order to gain access to the osteolytic lesion located behind the shell,   manipulating the curette through the hole to thereby scrape osteolytic material from the lesion,   inserting a brush, said brush configured to entrap osteolytic material in bristles of the brush, through at least one of the holes of the acetabular shell,   manipulating the brush to entrap and remove residual particles of osteolytic material from the osteolytic lesion,   inserting a cannula through at least one of the holes of the acetabular shell, and   suctioning loose osteolytic material through said cannula.   
     
     
         28 . The method of  claim 27 , further comprising bending said curette in order to reach areas of the osteolytic lesion. 
     
     
         29 . The method of  claim 27 , further comprising plugging at least one of the fixation holes of the shell and injecting an osteoregenerative material behind the shell, said plugs preventing said osteoregenerative material from seeping through the fixation holes. 
     
     
         30 . The method of  claim 29 , wherein all of the holes are plugged, and further comprising inserting a cannula through one of said plugs and injecting said osteoregenerative material through said plug. 
     
     
         31 . The method of  claim 28 , wherein curette is bent by inserting the curette into a multi-radius bender. 
     
     
         32 . The method of  claim 31 , wherein the multi-radius bender comprises a plurality of bending radiuses on an upper surface of a bending portion. 
     
     
         33 . The method of  claim 32 , wherein the multi-radius bender comprises an instrument tip bend aperture. 
     
     
         34 . A multi-radius bender comprising:
 a base portion;   a lengthwise body portion coupled to the base portion, the lengthwise body portion defining a bending portion at a first end, the bending portion comprising a plurality of bending surfaces each defining a bending radius; and   a shaft holder coupled to the plurality of bending surfaces configured to receive a curette shaft.   
     
     
         35 . The multi-radius bender of  claim 34 , wherein a first set of the bending radii comprise a shared bend. 
     
     
         36 . The multi-radius bender of  claim 35 , wherein a second set of the bending radii comprise an unshared bend. 
     
     
         37 . The multi-radius bender of  claim 34 , further comprising a first instrument tip bend aperture configured to bend a curette tip at a first predetermined angle. 
     
     
         38 . The multi-radius bender of  claim 37 , wherein the first instrument tip bend aperture is formed through the base portion. 
     
     
         39 . The multi-radius bender of  claim 37 , further comprising a second instrument tip bend aperture configured to bend the curette tip at a second predetermined angle. 
     
     
         40 . A method of repairing an osteolytic lesion associated with an implant, comprising:
 bending a shaft of a curette to a predetermined angle using a multi-radius bender;   inserting the curette through at least one hole of the implant; and   manipulating the curette through the hole to thereby scrape osteolytic material from the lesion.   
     
     
         41 . The method of  claim 40 , further comprising:
 inserting a brush through at least one hole of the implant, wherein the brush is configured to entrap osteolytic material in the bristles of the brush through at least one of the holes of the implant; and   manipulating the brush to entrap and remove residual particles of osteolytic material from the osteolytic lesion.   
     
     
         42 . The method of  claim 41 , further comprising:
 inserting a cannula through the at least one hole of the implant; and   suctioning loose osteolytic material through the cannula.   
     
     
         43 . The method of  claim 42 , further comprising plugging at least one of the holes of the implant and injecting an osteoregenerative material behind the implant using a plug, wherein the plug prevents the osteoregenerative material from seeping through the at least one plugged hole. 
     
     
         44 . The method of  claim 43 , wherein all holes of the implant are plugged, and further comprising inserting a cannula through one of the plugs to inject the osteoregenerative material through said plug. 
     
     
         45 . The method of  claim 40 , wherein the shaft of the curette is bent by inserting the shaft into a shaft holder formed on the multi-radius bender and is bent along one of a plurality of bending surfaces of the multi-radius bender corresponding to the predetermined angle. 
     
     
         46 . The method of  claim 40 , wherein the shaft of the curette is bent by inserting a tip of the curette into an instrument tip bend aperture and bending the shaft to the predetermined angle. 
     
     
         47 . A kit for treating an osteolysis and other degenerative bone conditions comprising:
 a ring curette comprising a structure for removing osteolytic material from a surface of a lesion;   a multi-radius bender configured to bend a shaft of the ring curette to a plurality of predetermined angles; and   a frustoconical plug having a trailing end that tapers to an insertion end including a solid shoulder outwardly extending from the trailing end and a tail attached to and extending from the trailing end.   
     
     
         48 . The kit of  claim 47 , wherein the multi-radius bender comprises:
 a base portion;   a lengthwise body portion coupled to the base portion, the lengthwise body portion defining a bending portion at a first end, the bending portion comprising a plurality of bending surfaces each defining a bending radius; and   a shaft holder coupled to the plurality of bending surfaces configured to receive a curette shaft.   
     
     
         49 . The kit of  claim 47 , wherein a first set of the bending radii of the multi-radius bender comprise a shared bend. 
     
     
         50 . The kit of  claim 49 , wherein a second set of the bending radii of the multi-radius bender comprise an unshared bend. 
     
     
         51 . The kit of  claim 47 , wherein the multi-radius bender further comprises a first instrument tip bend aperture configured to bend a curette tip at a first predetermined angle. 
     
     
         52 . The kit of  claim 51 , wherein the first instrument tip bend aperture is formed through the base portion. 
     
     
         53 . The kit of  claim 51 , further comprising a second instrument tip bend aperture configured to bend the curette tip at a second predetermined angle. 
     
     
         54 . The plug of  claim 19 , wherein said cord is embedded in said plug body substantially along said rim of said plug body and said insertion cavity is formed substantially along an axis of said plug body.