Patent ID: 9545279
Date: 2017-01-17
CPC Classifications: A61B

Claim:
1. An anchor device for anchoring an elongated rod to the spine, comprising: a fastener having a connecting portion and a head, said head of said fastener defining a socket having a socket opening; a yoke having a channel for receiving the elongated rod therein, said yoke being coupled to said head of said fastener in a manner to allow articulating movement of said yoke relative thereto; an element disposed within said socket for coupling said yoke to said head of said fastener in a manner to allow articulating movement of said yoke relative to said socket; a fixation structure between said yoke and said element operable to fix said yoke and said element together, said fixation structure including a threaded bore defined in one of said yoke and said element, a threaded stem adapted for threaded engagement with said bore extending from the other of said yoke and said element; and a spring element supported between said yoke and the head of said fastener externally of said socket in direct contact with said yoke and configured to releasably retain said yoke in a discrete position relative to said fastener.