Patent ID: 7850692

Claim:
A surgical reamer for cutting a bone socket, comprising: a) a hollow dome comprising: i) a dome portion of a hemisphere extending from an apex to a lower edge, the dome portion being rotatable about a longitudinal axis that is perpendicular to a theoretical equatorial plane of the hemisphere and that passes through the apex of the dome portion, wherein the dome portion has an outer surface presenting multiple cutting sites , comprising apertures suitable for passing debris into a cavity defined by an inner surface of the dome where the debris may accumulate; ii) at least two opposed first edge portions of the lower edge residing on the theoretical equatorial plane, wherein a second theoretical plane perpendicular to the equatorial plane intersects the longitudinal axis and two of the at least two first edge portions residing on the theoretical equatorial plane; and iii) at least two continuously curved second edge portions of the lower edge spaced from the theoretical equatorial plane toward the apex, wherein at least one second edge portion resides on opposite sides of the second theoretical plane disposed between and connected to two of the first edge portions; and b) an alignment structure connected to the inner surface of the dome portion for detachably connecting the hollow dome to a drive mechanism.