Implant for correction of spinal deformity

Abstract

A device for correction of a spinal deformity includes an implant having a first end portion and an opposite second end portion, the first end portion being attachable to an extraspinal bone, the second end portion being attachable to a vertebra, the implant being configured for being adjusted without penetrating skin and thereby for adjusting a tension of the implant so as to impose a corrective displacement on the vertebra.

1 . A device for correction of a spinal deformity, comprising:
 an implant having a first end portion and an opposite second end portion, said first end portion being attachable to an extraspinal bone, said second end portion being attachable to a vertebra, said implant being configured for being adjusted without penetrating skin and thereby for adjusting a tension of said implant so as to impose a corrective displacement on said vertebra.   
     
     
         2 . The device of  claim 1 , wherein said implant includes a cable and an adjustment device coupled with said cable, said adjustment device including said first end portion of said implant, said cable including a third end portion and a fourth end portion, said fourth end portion being said second end portion of said implant, said adjustment device being configured for adjusting said tension of said implant so as to impose said corrective displacement on said vertebra, said adjustment device including a screw and a body, said screw having a threaded portion and being engaged with said third end portion of said cable, said body having an interior surface complementarily threaded for receiving said screw such that when said screw rotatably advances into said body said tension of said cable is adjusted. 
     
     
         3 . The device of  claim 2 , wherein said implant includes a structure configured for attaching said body to a pelvic bone. 
     
     
         4 . A device for correction of a spinal deformity, comprising:
 a. a tension adjusting member having a first end, a second end, and a body defined therebetween; and   b. a tension member having a first end portion, a second end portion, and a body portion defined therebetween, said tension member being movably engaged with said body of said tension adjusting member such that said first end portion of said tension member is linearly movable relative to said first end of said tension adjusting member for adjusting a tension of said tension member.   
     
     
         5 . The device of  claim 4 , wherein said second end portion of said tension member is configured for being secured to a vertebra and said first end of said tension adjusting member is configured for being secured to an extraspinal bone so that when said first end portion of said tension member moves one of away from and toward said first end of said tension adjusting member said tension of said tension member is adjusted so that said device is configured for imposing a corrective displacement on said vertebra. 
     
     
         6 . A method for correcting a spinal deformity, said method comprising the steps of:
 providing an implant including a first end portion and a second end portion opposite said first end portion;   attaching said first end portion to an extraspinal bone;   attaching said second end portion to a vertebra; and   adjusting said implant without penetrating skin and thereby adjusting a tension of said implant.