US 12,274,453 B2
Method of drilling holes in bones and harvesting bone fragments for bone grafting
Jacob Pourati, Brookline, MA (US); and Daniel M Schaner, Billings, MT (US)
Filed by Jacob Pourati, Brookline, MA (US)
Filed on Nov. 15, 2022, as Appl. No. 17/987,196.
Prior Publication US 2024/0156471 A1, May 16, 2024
Int. Cl. A61B 17/16 (2006.01)
CPC A61B 17/1635 (2013.01) [A61B 17/1615 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A method of drilling a hole in a bone including the steps of:
a) providing a drill bit configured to drill a hole in a bone, said hole having a desired cross-section;
b) rotating said drill bit at a rotation speed less than 75 revolutions per minute (rpm) while advancing said drill bit to drill said hole;
c) said rotating step being carried out without use of cooling liquid;
d) harvesting bone fragments created from said rotating and advancing step;
e) wherein said drill bit includes a distal pointed tip, a first region proximal of said tip with helical cutting edges defining a first angulation of 13°-17° with respect to an axis of elongation of said drill bit, and a second region proximal of said first region with helical cutting edges defining a second angulation of 31° to 35° with respect to said axis of elongation; and
f) further including the step of periodically dipping said drill bit into a body of liquid to facilitate removal of bone fragments therefrom.