Patent ID: 8758379
Filing Date: 2014-06-24
Classification: A61B

Abstract:
1. A surgical cutting instrument for addressing tissue including at least one of soft tissue and bone, the instrument comprising: a first hollow elongated member having a proximal section and a distal section having serrated edges which define a cutting tip; a second tubular member having a proximal region and a distal region forming a cutting window, the cutting window having serrated edges, the first elongated member being co-axially disposed within the second tubular member such that the cutting tip is exposed at the cutting window; and means for moving the first and second members relative to each other around their common axis such that the cutting tip may repeatedly address the tissue; in which the cutting window comprises a proximal, trapezoidal first open portion having a first width, and a distal, generally semicircular second open portion having a second width, the first and second open portions being separated from each other by a pair of oppositely facing teeth, each of the first and second widths of the open portions being greater than a distance by which each of the pair of oppositely facing teeth are separated from each other.