US 12,096,970 B2
Medical systems that implement a common-mode choke to reduce voltage transients
Alan W. Petersen, Cupertino, CA (US)
Assigned to Intuitive Surgical Operations, Inc., Sunnyvale, CA (US)
Appl. No. 17/282,460
Filed by Intuitive Surgical Operations, Inc., Sunnyvale, CA (US)
PCT Filed Oct. 28, 2019, PCT No. PCT/US2019/058374
§ 371(c)(1), (2) Date Apr. 2, 2021,
PCT Pub. No. WO2020/092256, PCT Pub. Date May 7, 2020.
Claims priority of provisional application 62/752,464, filed on Oct. 30, 2018.
Prior Publication US 2021/0353352 A1, Nov. 18, 2021
Int. Cl. A61B 18/12 (2006.01); A61B 34/00 (2016.01); A61B 90/00 (2016.01); H01F 17/06 (2006.01); A61B 18/00 (2006.01); A61B 18/14 (2006.01); H01F 17/00 (2006.01)
CPC A61B 18/1233 (2013.01) [A61B 34/70 (2016.02); A61B 90/06 (2016.02); H01F 17/062 (2013.01); A61B 2018/00178 (2013.01); A61B 2018/00767 (2013.01); A61B 2018/144 (2013.01); A61B 2090/064 (2016.02); H01F 2017/0093 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A surgical instrument, comprising:
a shaft configured to be inserted into a surgical area inside a patient;
a tool at a distal end of the shaft;
a sensor on at least one of the shaft and the tool and configured to output a signal; and
a backend housing coupled to the shaft and configured to removably attach to a component separate from the surgical instrument, the backend housing comprising a first electrical circuit and a common-mode choke, the component comprising a carriage attached to a main frame of a manipulator arm of a surgical system and configured to slidably move along the main frame;
wherein the first electrical circuit is configured to receive the signal from the sensor and transmit data representative of the signal to a second electrical circuit included in the component;
wherein the common-mode choke comprises a plurality of wires wound around a core;
wherein, when the backend housing is removably attached to the component, the common-mode choke is coupled between the first electrical circuit and an optical isolator circuit included in the component; and
wherein the optical isolator circuit is configured to optically transmit signals between the first and second electrical circuits.