Patent ID: 8721641

Claim:
An external orthopaedic fixator for elbow joints comprising: a proximal anchoring member intended to be integrally associated to a proximal bone of a patient's upper limb; a distal anchoring member intended to be integrally associated to a distal bone of a patient's upper limb; a joint distraction member for distraction control to allow the distal anchoring member to be translated with respect to the proximal anchoring member; an articulator that hinges said proximal anchoring member to said distal anchoring member along a hinging axis, intended to be positioned in correspondence with an elbow joint connecting said proximal and distal bones, said articulator comprising a radiotransparent centering window intended to frame the elbow joint when positioning the external orthopaedic fixator, said hinging axis passing through said centering window, said articulator also comprising a proximal joining portion which is associated to the proximal anchoring member and a distal joining portion which is associated to the distal anchoring member, wherein said distal joining portion comprises a coupling element hinged to the proximal joining portion and a distal connector integral with the distal joining portion and slidably movable with respect to the coupling element, said joint distraction member being arranged to promote the translation of the distal connector with respect to the coupling element of the articulator, and wherein said distal connector comprises a sliding arm that is slidably inserted into a sliding seat of the coupling element, said joint distraction member having the form of a distraction control screw comprising a head that is rotatably associated to the sliding seat and a shank engaged in the sliding arm; wherein said centering window comprises a central tube oriented along the hinging axis, for the potential insertion of a reference wire; wherein said proximal anchoring member comprises at least one proximal rod connected to the articulator and fixable to the proximal bone by means of proximal endosseous pins supported by at least one proximal clamp, said at least one proximal clamp comprising a first coupling element, arranged to lock the proximal endosseous pins, and a second coupling element arranged to lock the proximal rod, said first and second coupling elements being articulated with each other by means of an articulation pin comprising a head associated to the first coupling element and a shank associated to the second coupling element; wherein said second coupling element is selectively rotatable around the axis of said articulation pin; and wherein said head of the articulation pin has a through-hole through which an eccentric passes that is transverse to the first coupling element, said articulation pin being selectively rotatable with respect to said eccentric.