Patent ID: 7585315
Filing Date: 2009-09-08
Classification: A61B

Abstract:
1. A device for connecting a longitudinal member to a bone or bone fragment, the device comprising: an integral bone fixation means having a longitudinal axis, a coaxially disposed lower part for fixation to the bone, and a coaxially disposed upper part having an upper end and a lower end; wherein the upper part includes a channel having an opening at the upper end of the upper part for accommodating the longitudinal member, and a channel axis extending transverse to the longitudinal axis; the upper part further including, between the lower end of the upper part and the channel, a slit which extends parallel to the longitudinal axis and which passes radially through the upper part forming two elastically deformable sidewalls; and a locking ring having a central borehole having a diameter d, the locking ring being moveable from a first position, wherein the two sidewalls are elastically displaceable with respect to the longitudinal axis, to a second position, wherein the two sidewalls are pressed against the channel axis so that the longitudinal member placed within the channel is locked within the channel, the upper part, between the lower end of the upper part and the channel further comprises a first groove, which is concentric with the longitudinal axis and has a diameter D wherein the upper part further comprises a second groove located between the first groove and the channel, the second groove being concentric with the longitudinal axis and having a diameter D wherein the upper part, between the first groove and the second groove, further comprises a shoulder, concentric with the longitudinal axis, and having an external diameter D