US 11,864,784 B2
Pin drive rotary surgical cutting tools and powered handpieces
Paul Cihak, Euless, TX (US); and Zachary Heiliger, Golden, CO (US)
Assigned to Medtronic PS Medical, Inc., Fort Worth, TX (US)
Filed by Medtronic PS Medical, Inc., Fort Worth, TX (US)
Filed on Dec. 23, 2020, as Appl. No. 17/132,223.
Application 17/132,223 is a continuation of application No. 16/106,597, filed on Aug. 21, 2018, granted, now 10,905,453.
Application 16/106,597 is a continuation of application No. 15/018,990, filed on Feb. 9, 2016, granted, now 10,080,579, issued on Sep. 25, 2018.
Claims priority of provisional application 62/138,331, filed on Mar. 25, 2015.
Prior Publication US 2021/0106350 A1, Apr. 15, 2021
Int. Cl. B23B 31/00 (2006.01); B23B 31/107 (2006.01); A61B 17/32 (2006.01); A61B 17/16 (2006.01); A61B 17/00 (2006.01)
CPC A61B 17/32002 (2013.01) [A61B 17/1615 (2013.01); B23B 31/005 (2013.01); B23B 31/008 (2013.01); B23B 31/1071 (2013.01); A61B 2017/00398 (2013.01); A61B 2017/00477 (2013.01); B23B 2231/0244 (2013.01); B23B 2231/0264 (2013.01); B23B 2231/22 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A drive chuck for receiving and supporting any one of a plurality of tools, each tool including a shaft forming a tang providing a coupling portion, the drive chuck comprising:
a hub-like body defining an interior passage for receipt of a tool tang, the hub-like body carrying one or more balls configured to operably engage a circumferential groove defined within the shaft of the tool and configured to axially lock the tool within the drive chuck upon rotation of the one or more balls within the circumferential groove;
a guide face defining a maximum diameter of the interior passage;
a first drive body formed as a radially inward projection from the guide face;
wherein the first drive body defines a first drive surface and a second drive surface, a major plane of the first drive surface being substantially perpendicular to a major plane of the second drive surface, and wherein, upon insertion of a tool into the drive chuck, a deflection surface defined on the shaft of the tool contacts the first drive body such that an insertion force causes the tool to rotate about a central axis of the tool and aligns a first driven surface of the tool with the first drive surface and the second driven surface of the tool with the second drive surface, once the driven surfaces are aligned, the balls of the hub-like body engage within the circumferential grooves to axially lock the tool within the drive chuck upon rotation of the hub-like body.