US 12,280,397 B2
System and methods for controlling patient leakage current in a surgical system
Adam Darwin Downey, Kalamazoo, MI (US); Patrick Cobler, Nashua, NH (US); and Scott Rhodes, North Andover, MA (US)
Assigned to Stryker Corporation, Portage, MI (US)
Filed by Stryker Corporation, Kalamazoo, MI (US)
Filed on May 21, 2024, as Appl. No. 18/670,207.
Application 18/670,207 is a continuation of application No. 16/770,473, granted, now 12,017,251, previously published as PCT/US2018/063775, filed on Dec. 4, 2018.
Claims priority of provisional application 62/595,235, filed on Dec. 6, 2017.
Prior Publication US 2024/0299979 A1, Sep. 12, 2024
Int. Cl. B06B 1/02 (2006.01); A61B 17/32 (2006.01); A61B 17/00 (2006.01)
CPC B06B 1/0253 (2013.01) [A61B 17/320068 (2013.01); B06B 1/0246 (2013.01); A61B 2017/00119 (2013.01); A61B 2017/00199 (2013.01); B06B 2201/40 (2013.01); B06B 2201/55 (2013.01); B06B 2201/76 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A control console for supplying a drive signal to a surgical tool, the control console comprising:
a transformer comprising a primary winding and a secondary winding, the primary winding being configured to receive an input signal from a power source and to induce the drive signal in the secondary winding to supply the drive signal to the surgical tool;
a first current source comprising a leakage control winding coupled to a path of the drive signal, wherein the primary winding is configured to induce a first cancellation current in the leakage control winding to inject into the path of the drive signal to cancel at least a portion of leakage current of the drive signal;
a sensor coupled to the path of the drive signal, wherein the sensor is configured to output a sensed signal to provide feedback related to the leakage current; and
a fault detection stage coupled to the sensor and being configured to receive the sensed signal and to generate a fault detection signal responsive to detection of a fault condition related to the leakage current.