US 11,717,853 B2
System and method for driving an ultrasonic handpiece with a linear amplifier
Adam D. Downey, Kalamazoo, MI (US); Neal R. Butler, Acton, MA (US); and Scott A. Rhodes, North Andover, MA (US)
Assigned to Stryker Corporation, Kalamazoo, MI (US)
Filed by Stryker Corporation, Kalamazoo, MI (US)
Filed on Aug. 30, 2021, as Appl. No. 17/460,509.
Application 17/460,509 is a continuation of application No. 16/589,815, filed on Oct. 1, 2019, granted, now 11,241,716.
Application 16/589,815 is a continuation of application No. 15/805,849, filed on Nov. 7, 2017, granted, now 10,449,570, issued on Oct. 22, 2019.
Application 15/805,849 is a continuation of application No. PCT/US2016/031651, filed on May 10, 2016.
Claims priority of provisional application 62/159,672, filed on May 11, 2015.
Prior Publication US 2022/0055069 A1, Feb. 24, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. B06B 1/02 (2006.01); A61F 9/007 (2006.01); A61B 17/32 (2006.01); H03F 1/02 (2006.01); A61B 17/00 (2006.01); A61B 90/98 (2016.01); A61B 17/14 (2006.01); A61B 18/14 (2006.01); A61B 18/00 (2006.01); A61B 18/18 (2006.01); H02M 3/158 (2006.01); H03F 3/45 (2006.01)
CPC B06B 1/0253 (2013.01) [A61B 17/320068 (2013.01); A61F 9/00745 (2013.01); B06B 1/0246 (2013.01); H03F 1/0216 (2013.01); A61B 17/142 (2016.11); A61B 18/14 (2013.01); A61B 90/98 (2016.02); A61B 2017/0003 (2013.01); A61B 2017/00017 (2013.01); A61B 2017/00199 (2013.01); A61B 2017/00477 (2013.01); A61B 2017/00973 (2013.01); A61B 2017/32007 (2017.08); A61B 2017/320069 (2017.08); A61B 2018/00029 (2013.01); A61B 2018/00577 (2013.01); A61B 2018/1807 (2013.01); A61B 2217/005 (2013.01); A61B 2217/007 (2013.01); B06B 2201/55 (2013.01); B06B 2201/76 (2013.01); H02M 3/158 (2013.01); H03F 3/45475 (2013.01); H03F 2200/541 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A control console for supplying an AC drive signal to a driver of an ultrasonic handpiece to vibrate a tip of the ultrasonic handpiece, the control console comprising:
a transformer including a primary winding having first and second opposed ends and a center tap to which a DC voltage is applied, and including a secondary winding across which the AC drive signal is developed for vibrating the tip of the ultrasonic handpiece; and
first and second transistors functioning as first and second active resistors coupled to the first and second opposed ends of the primary winding respectively for developing an AC voltage across the primary winding,
wherein the control console is configured to vary a level of the DC voltage applied to the center tap of the primary winding based on the AC voltage developed across the primary winding.