Patent ID: 7918876

Claim:
An adjustable spinal implant comprising: an extending shaft having a proximal end and a distal end and having grooves on an external surface of said extending shaft; a first fitting attached to said distal end of said extending shaft for engaging a first structure; a substantially cylindrical housing having a proximal end and a distal end and an inner surface and an outer surface, wherein said proximal end of said housing receives therewithin said proximal end of said extending shaft; a substantially cylindrical rotor having an outer surface and an inner surface and having grooves on said inner surface engageable with said grooves on said extending shaft, wherein said rotor is axially fixed with respect to said housing; a locking collar disposed about said outer surface of said housing at said proximal end of said housing, wherein said locking collar comprises an outer surface and an inner surface and at least one protrusion directed radially inwardly for engagement with said outer surface of said substantially cylindrical rotor; and a second fitting attached to said distal end of said housing for engaging a second structure.