Patent ID: 9271760
Filing Date: 2016-03-01
CPC Classification: A61B

Claim Text:
1. A locking device for securing a rod-shaped element in a receiving part of a bone anchor, the locking device comprising: a first locking member comprising a first end, a second end, a central axis passing through the first end and the second end, an outer surface with an external thread, a coaxial bore passing through the first locking member, and an internal thread provided along at least a portion of the bore; and a monolithic second locking member comprising a first end, a second end, and an outer surface with an external thread configured to cooperate with the internal thread of the first locking member, wherein when the second locking member is positioned in the first locking member, the second locking member is movable along the central axis by rotating the second locking member relative to the first locking member, and wherein the first locking member or the second locking member comprises a first stop, such that movement of the second locking member is limited in a first direction along the central axis by the first stop, and wherein the first locking member or the second locking member comprises a second stop, such that movement of the second locking member is limited in a second direction along the central axis opposite to the first direction by the second stop.