Patent ID: 8147490
Filing Date: 2012-04-03
Classification: A61B

Abstract:
1. A fixation device to establish a stable connection of at least two bone portions of a broken bone, including: a base body to tightly receive a bone nail; a rod clamping holder having a clamping receptacle and a through-opening; a fixation rod receivable in the receptacle of the rod clamping holder; a bearing element configured to mount the rod clamping holder on the base body so that the rod clamping holder is spherically displaceable in the bearing element; and a tensioning rod connection including a tensioning rod on which the base body, the rod clamping holder and the bearing element are arrangeable in a row for tensioning relative to each other, wherein the tensioning rod connection has a first connection state when the tensioning rod connection is released so that the rod clamping holder together with the fixation rod are adjustable relative to the base body in all spatial directions, and a second connection state when there is sufficient closing tension in the tensioning rod connection to form a stable non-positive locking connection between the fixation rod and the base body to fix an adjusted relative position of the fixation rod and base body, and wherein in the first connection state the rod clamping holder and the bearing element are in positive engagement and the tensioning rod passes through the through-opening of the rod clamping holder with sufficient play in the through-opening to permit spherical displacement in all directions of the rod clamping holder.