US 11,446,151 B2 · Annular cutting tools for resecting a bone graft and related methods

Abstract

An annular cutting tool and related methods are provided for herein that exhibit improved durability, cutting performance, and/or reduced heat generation for bone graft resections. The annular cutting tool can include an annular body having cutting teeth with a flat, flared distal tip for greater durability. An extended gullet can be disposed between groups of adjacent cutting teeth to improve removal of bone debris away from the cutting teeth more and thus prevent binding during use. The annular cutting body can have a recessed surface portion to reduce the area of direct contact to bone and thus reduce heat generated. The recessed surface portion can also provide an area in which bone debris can accumulate away from the cutting teeth to prevent or reduce binding of the tool during use. The annular cutting body can also include a drill bit for drilling a hole in a resected bone graft.

Claims25

Dependent claims

An annular cutting tool, comprising:

an annular cutting body having a proximal end, a distal end, and a central portion disposed between the proximal end and the distal end, with a central longitudinal axis of the annular cutting body extending from the proximal end to the distal end;
a plurality of cutting teeth disposed at the distal end of the annular cutting body, the plurality of cutting teeth extending radially outward beyond the central portion of the annular cutting body with respect to the central longitudinal axis such that the central portion comprises a recessed surface area;
a drill bit that extends distally from the proximal end of the annular cutting body, along the central longitudinal axis;
a drive shaft that extends proximally from the proximal end of the annular cutting body and is coaxial with the central longitudinal axis of the annular cutting body;
and
one or more blades transversely disposed at the proximal end of the annular cutting body and extending radially outward from the central longitudinal axis in a spiral pattern.

3 more elements

Dependencies are inferred from the claim text.

Annular cutting tools for resecting a bone graft and related methods

Life of this patent

Annular cutting tools for resecting a bone graft and related methods

Life of this patent

Abstract

Claims25