Patent ID: 8876825

Claim:
A bone cutter, comprising: a) a first sidewall comprising a first inner surface providing a first lumen extending along a longitudinal axis from a first sidewall proximal portion to a first sidewall distal portion having a first sidewall distal end residing along a first imaginary plane; b) a second sidewall comprising a second inner surface spaced from a second outer surface by a second sidewall thickness to thereby provide a second lumen extending along the longitudinal axis from a second sidewall proximal portion to a second sidewall distal Portion having a second sidewall distal end residing along a second imaginary plane, c) wherein the first and second sidewalls are fixedly joined to each other in a co-axial relationship with the outer surface of the second sidewall being radially inside the inner surface of the first sidewall with the second imaginary plane being more proximal along the longitudinal axis than the first imaginary plane to thereby provide an offset; d) a cutter disc comprising a disc wall extending from an annular outer disc edge to an inner disc edge surrounding a disc opening, the cutter disc having a disc thickness extending from a proximal disc face to a distal disc face, wherein the proximal cutter disc face is supported on the second sidewall distal end with the annular outer disc edge in contact with the inner surface of the first sidewall distal portion; and e) a plurality of cutting teeth on the cutter disc, each cutting tooth having a tooth opening extending through the disc wall and a tooth cutting surface extending away from the distal disc face towards the first imaginary plane, wherein each tooth opening provides open communication at least into the first lumen between the first and second sidewalls.