US 12,114,914 B2
Methods and systems for advanced harmonic energy
David C. Yates, Morrow, OH (US); Amy M. Krumm, Cincinnati, OH (US); and Mark A. Davison, Maineville, OH (US)
Assigned to Cilag GmbH International, Zug (CH)
Filed by Cilag GmbH International, Zug (CH)
Filed on May 23, 2022, as Appl. No. 17/750,816.
Application 17/750,816 is a continuation of application No. 16/531,591, filed on Aug. 5, 2019, granted, now 11,344,362.
Application 16/531,591 is a continuation of application No. 15/229,562, filed on Aug. 5, 2016, granted, now 10,376,305, issued on Aug. 13, 2019.
Prior Publication US 2022/0346863 A1, Nov. 3, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. A61B 18/12 (2006.01); A61B 17/32 (2006.01); A61B 18/14 (2006.01); A61B 18/00 (2006.01)
CPC A61B 18/1445 (2013.01) [A61B 17/320092 (2013.01); A61B 18/1206 (2013.01); A61B 18/1482 (2013.01); A61B 2017/320094 (2017.08); A61B 2017/320095 (2017.08); A61B 2018/00208 (2013.01); A61B 2018/0063 (2013.01); A61B 2018/00642 (2013.01); A61B 2018/00678 (2013.01); A61B 2018/00702 (2013.01); A61B 2018/00875 (2013.01); A61B 2018/00994 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A surgical system, comprising:
an end effector comprising an energy delivery component and an impedance sensor; and
a control circuit operably coupled to the energy delivery component, wherein the control circuit is configured to:
determine a transition impedance of a tissue;
determine an initial impedance of the tissue via the impedance sensor;
determine a minimum impedance of the tissue via the impedance sensor;
cause the energy delivery component to deliver energy to the tissue at a first power level;
determine a first pulse duration of the first power level at the minimum impedance of the tissue;
cause the energy delivery component to decrease the energy at a steady rate from the first power level to a second power level, based on a decrease of an impedance of the tissue from the initial impedance to the minimum impedance, and based on an increase from the minimum impedance of the tissue to a proportion of the transition impedance; and
cause the energy delivery component to deliver energy to the tissue at the second power level at a second pulse duration that is less than the first pulse duration.