Patent ID: 7563060

Claim:
A drill bit comprising: a generally cylindrical body having an interior chamber extending axially along at least a portion of the body, the interior chamber being in fluid communication with a first opening at a distal end of the body and with at least one second opening proximate to a proximal end of the body, the at least one second opening extending through a side wall of the body from an outer surface thereof to the interior chamber, a plurality of grooves arranged on the outer surface of the body, at least one of the plurality of grooves being in fluid communication with the at least one second opening, the proximal end of the body configured to receive a cutting insert, the cutting insert having at least one cutting surface, and the body having a corresponding second opening for each at least one cutting surface, and a relief on the body for each cutting surface, each relief starting at the proximal end of the body and extending distally along the body, and each relief being in fluid communication with the corresponding second opening for each at least one cutting surface.