Patent ID: 8702766
Filing Date: 2014-04-22
Classification: A61B

Abstract:
1. A receiving member for a bone fixation assembly, the receiving member having opposite first and second sides spaced apart by a thickness, the receiving member comprising a primary socket and a secondary socket on the receiving member first side, the primary socket being adapted to receive a fixation mechanism, the secondary socket being adapted to receive a locking device, the locking device being adapted to engage the fixation mechanism and prevent the fixation member from becoming disengaged from the receiving member primary socket, the primary socket having a bore extending from the primary socket to the receiving member second side thereby allowing a fixation mechanism to be directed into the primary socket and through the bore to a bone anchor site, the secondary socket having first and second bores with the secondary socket first bore being larger in diameter than the secondary socket second bore and forming a shoulder therebetween, the secondary socket first bore intersecting a portion of the primary socket and forming an arcuate cut-out, the secondary socket second bore extending from the secondary socket shoulder into the receiving member thereby enabling a locking device to be directed into the secondary socket and through the secondary socket second bore, the secondary socket having a chord member extending into the secondary socket first bore, the chord member forming a radial undercut between the chord member and the secondary socket shoulder, and the secondary socket having a detent extending from the radial undercut into the chord member.