US 11,918,245 B2
Ultrasonic surgical handpiece with torsional transducer
Steven J Apperson, Ballwin, MO (US); Johanna L Bryan, Chesterfield, MO (US); and David G Wuchinich, Bronx, NY (US)
Assigned to Kogent Surgical, LLC, Chesterfield, MO (US)
Filed by Kogent Surgical, LLC, Chesterfield, MO (US)
Filed on Oct. 3, 2019, as Appl. No. 16/592,288.
Claims priority of provisional application 62/741,615, filed on Oct. 5, 2018.
Prior Publication US 2020/0107848 A1, Apr. 9, 2020
Int. Cl. A61B 17/32 (2006.01)
CPC A61B 17/32 (2013.01) [A61B 2017/32009 (2017.08); A61B 2017/320098 (2017.08); A61B 2217/007 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A surgical handpiece, comprising:
a motor having a torsional transducer assembly along a central axis of the surgical handpiece, the motor being configured for operative connection to a power source;
a surgical attachment having a proximal end detachably connected to the motor and a distal end defining a working plane for engagement with biological tissue; and
wherein the motor is configured to create a standing wave along the central axis in response to the application of an electrical current and voltage from the power source, the standing wave creates torsional motion about the central axis at the working plane, the standing wave defining an alternating pattern of nodes and anti-nodes along the central axis, wherein a position of one of the anti-nodes along the center axis corresponds with the position of the working plane.