| 主权项 |
1. A polyaxial screw assembly, comprising:
a screw member having a partially spherical head; at least one rod member having a circumference; and a body member for interconnecting the screw member to the at least one rod member, the body member having:
a longitudinal rod axis; andat least one rod retainer for retaining the rod member therein about an entirety of the circumference, the at least one rod retainer:
being at least partially contained within the body member;being fixed with respect to movement along the longitudinal rod axis; andhaving:
a first condition in which the at least one rod retainer is in an unlocked state allowing rotation and sliding of the rod member thereof relative to the body member while retaining a portion of the rod member therein and the body member is rotatable about the partially spherical head to allow movement of the body member along with the at least one rod retainer at an angle to the screw member; anda second condition in which the at least one rod retainer is in a locked state locking the at least one rod retainer and the rod member from rotation relative to the body member while allowing the rod member to slide therewithin and the body member being locked on the partially spherical head to prevent movement of the body member with respect to the screw member. |
