US 12,336,719 B2
Powered surgical handpiece system
Thomas Burke, Claremorris (IE)
Assigned to Stryker European Operations Holdings LLC, Portage, MI (US)
Filed by Stryker European Operations Holdings LLC, Kalamazoo, MI (US)
Filed on Nov. 20, 2023, as Appl. No. 18/513,757.
Application 16/988,837 is a division of application No. 15/423,736, filed on Feb. 3, 2017, granted, now 10,736,642, issued on Aug. 11, 2020.
Application 18/513,757 is a continuation of application No. 16/988,837, filed on Aug. 10, 2020, granted, now 11,819,221.
Application 15/423,736 is a continuation of application No. PCT/US2015/042221, filed on Jul. 27, 2015.
Claims priority of provisional application 62/033,870, filed on Aug. 6, 2014.
Prior Publication US 2024/0081838 A1, Mar. 14, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. A61B 17/16 (2006.01); A61B 17/00 (2006.01)
CPC A61B 17/162 (2013.01) [A61B 17/1615 (2013.01); A61B 17/1622 (2013.01); A61B 17/1628 (2013.01); A61B 17/1631 (2013.01); A61B 2017/00477 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A powered surgical handpiece system including a motor having a drive spindle, the powered surgical handpiece system comprising:
a cutting accessory including an elongated shaft extending along an axis, the elongated shaft having a distal section comprising a tissue working member and a proximal section, the proximal section comprising a plurality of retention features and a flat that extends distally forward of the retention features;
a drive shaft configured to be coupled to the drive spindle of the motor to be rotated by the drive spindle, the drive shaft having a bore for receiving the proximal section of the cutting accessory;
a collet attached to the drive shaft, the collet including a base, a leg that extends from the base, and a foot attached to the leg, wherein the collet is held to the drive shaft to rotate with the drive shaft and the foot is shaped to seat against the shaft of the cutting accessory;
a lock assembly configured to selectively move the foot of the collet relative to the drive shaft from a run state in which the foot is held against the shaft of the cutting accessory so that the cutting accessory rotates with the drive shaft and a load state in which the foot is able to flex outwardly so the shaft of the cutting accessory can be inserted into or removed from the bore of the drive shaft; and
an alignment collar separate from the drive shaft and the collet with the alignment collar having a non-circular opening such that when the flat of the shaft of the cutting accessory presses against a planar surface of the alignment collar, retention features on the shaft of the cutting accessory are aligned for engagement with the foot of the collet.