Patent ID: 7955334

Claim:
An external fixation system comprising a ring or a ring segment extending around a central axis, the ring or ring segment thereof comprising a first surface extending perpendicular to a central axis, a second surface which is parallel to the first surface, and a plurality of spaced apart through openings running parallel to the central axis and extending through the ring or ring segment from the first to the second surface and a third surface which is parallel to the first and second surfaces with a plurality of through openings running parallel to said central axis extending from the first surface to the third surface and wherein the first, second and third surfaces are axially spaced apart with respect to the central axis from each other, wherein the ring or ring segment comprises a fourth surface which extends parallel to the first, second and third surfaces wherein a plurality of through openings extend from the second surface to the fourth surface and wherein the fourth surface is spaced with respect to the central axis from the first, second and third surfaces, wherein the third surface is formed by a plurality of first circumferentially spaced embossments on the first surface, wherein the fourth surface is formed by a plurality of second circumferentially spaced embossments on the second surface, and wherein the first and second embossments are arranged such that they alternate around adjacent through openings around the ring or ring segment.