Patent ID: 7485121
Filing Date: 2009-02-03
Classification: A61B

Abstract:
1. A distractor comprising a halo assembly configured to attach to a patients head; a vertical central rod having a longitudinal axis; a central adjustment assembly comprising a rear portion and a front portion, wherein the rear portion is attached to the halo assembly and the front portion is attached to the vertical central rod; at least one horizontal cross piece assembly attached to the vertical central rod, the at least one horizontal crosspiece assembly including at least one distraction element and at least one bone engaging portion; and wherein the front portion of the central adjustment assembly is angularly adjusted with respect to the rear portion in at least two degrees of freedom, the first degree of freedom being that the front portion is angularly adjusted by rotation in a medial-lateral direction with respect to the rear portion, and the second degree of freedom being that the front portion is angularly adjusted by rotation in a superior-inferior direction with respect to the rear portion.