US 12,290,410 B2
Manual knife bailout monitoring using inductive coupling
Mark D. Overmyer, Cincinnati, OH (US)
Assigned to CILAG GMBH INTERNATIONAL, Zug (CH)
Filed by CILAG GMBH INTERNATIONAL, Zug (CH)
Filed on Dec. 14, 2023, as Appl. No. 18/540,574.
Application 18/540,574 is a continuation of application No. 17/540,478, filed on Dec. 2, 2021, granted, now 11,864,954.
Application 17/540,478 is a continuation of application No. 16/547,270, filed on Aug. 21, 2019, granted, now 11,202,686, issued on Dec. 21, 2021.
Prior Publication US 2024/0108432 A1, Apr. 4, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. A61B 17/072 (2006.01); A61B 34/00 (2016.01); A61B 34/30 (2016.01); A61B 34/37 (2016.01); A61B 90/00 (2016.01); A61B 17/00 (2006.01); A61B 17/068 (2006.01); A61B 17/29 (2006.01)
CPC A61B 90/06 (2016.02) [A61B 17/072 (2013.01); A61B 17/07207 (2013.01); A61B 34/30 (2016.02); A61B 34/37 (2016.02); A61B 34/76 (2016.02); A61B 2017/00017 (2013.01); A61B 2017/00123 (2013.01); A61B 2017/00199 (2013.01); A61B 2017/00398 (2013.01); A61B 2017/00477 (2013.01); A61B 17/068 (2013.01); A61B 2017/07214 (2013.01); A61B 2017/07285 (2013.01); A61B 2017/2927 (2013.01); A61B 2090/0811 (2016.02); A61B 2562/0223 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A robotic surgical tool, comprising:
a tool driver including a first inductive coil;
a drive housing releasably mounted to the tool driver and including a second inductive coil;
and
a firing rod extending from the drive housing, the firing rod including a magnetically responsive material and being movable within the drive housing between a retracted position and an extended position,
wherein one of the first and second inductive coils generates a magnetic field, and the other of the first and second inductive coils measures an intensity of the magnetic field and a field distortion caused by movement of the firing rod, and
wherein a change in the field distortion provides an indication of movement of the firing rod between the retracted and extended positions.