Patent ID: 6458134
Filing Date: 2002-10-01
Classification: A61B

Abstract:
A bone connector system comprising:first and second connector members; at least one of said connector members having an external bone screw thread to permit attachment within a bone; one of the connector members having a bore therein having an outer end; the bore having an engagement portion of non-circular peripheral shape adjacent to the outer end; the other of the connector members having a boss dimensioned to be received in the bore; the boss having an outer engagement surface of non-circular peripheral shape disposed for mating engagement with the first engagement portion when the boss is received in the bore; and coupling structure interconnecting the first and second members to inhibit removal of the boss from the bore, wherein the coupling structure includes a first portion on the one member and a second portion on the other member, the first portion includes internal peripheral grooves in the bore inboard of the engagement portion, the second portion including external peripheral flanges on the boss adjacent to the distal end thereof and disposed for engagement in the grooves when the boss is received in the bore, and the grooves are formed by an internal helical thread and the flanges are formed by an external helical thread.