Patent ID: 8092475
Filing Date: 2012-01-10
Classification: A61B

Abstract:
1. An ultrasonic horn configured for use with a surgical ultrasonic handpiece having a resonator that generates ultrasonic waves, the ultrasonic horn comprising: a tapered elongated member having a proximal end, a distal end, an intermediate point located between the proximal and distal ends, and a central longitudinal axis, the elongated member tapering from a larger diameter at the proximal end to a smaller diameter at the distal end; a tip lead configured on the distal end of the elongated member, the tip lead being adapted for cutting hard tissue and having a chisel and awl shaped distal end having a chisel angle that is bisected by the central longitudinal axis of the elongated member, and further having blunt edges, a first planar surface on which the chisel angle is formed, an opposing second surface; and an internal channel longitudinally disposed within the elongated member, the internal channel having a substantially constant diameter central hole surrounded by the tapered elongated member along the entire length of the internal channel with the internal channel having a closed end located at approximately the intermediate point of the elongated member and extending to the proximal end of the elongated member at which position the channel has an open end, whereby the tapered elongated member has a hollow portion for the length of the internal channel and provides the wall for the hollow portion, wherein due to the channel having a constant diameter but the elongated member having a tapered outer shape, the thickness of the wall of the elongated member surrounding the internal channel varies from a larger thickness at the proximal end of the elongated member to a thinner wall thickness at the channel closed end; wherein the tapered elongated member further comprises a solid portion extending from the closed end of the internal channel to the distal end of the elongated member, the solid portion comprising a solid mass.