US 11,937,864 B2
Ablation systems with parameter-based modulation and related devices and methods
Joshua Defosset, Los Gatos, CA (US); Nate Shirley, Pleasant Grove, UT (US); Eric Wong, Sunnyvale, CA (US); Craig Purdy, Sunnyvale, CA (US); Oleg Yurchak, Milpitas, CA (US); Jimmy Chi-Yun Chan, San Mateo, CA (US); and Robert D. Poser, Scotts Valley, CA (US)
Assigned to DFine, Inc., South Jordan, UT (US)
Filed by DFine, Inc., South Jordan, UT (US)
Filed on Nov. 7, 2019, as Appl. No. 16/677,124.
Claims priority of provisional application 62/757,596, filed on Nov. 8, 2018.
Claims priority of provisional application 62/757,578, filed on Nov. 8, 2018.
Prior Publication US 2020/0146743 A1, May 14, 2020
Int. Cl. A61B 18/12 (2006.01); A61B 17/00 (2006.01); A61B 18/00 (2006.01); A61B 18/14 (2006.01); G06F 3/0482 (2013.01); G06F 3/0488 (2022.01); A61B 90/00 (2016.01)
CPC A61B 18/14 (2013.01) [A61B 18/1206 (2013.01); G06F 3/0482 (2013.01); G06F 3/0488 (2013.01); A61B 2017/00115 (2013.01); A61B 2017/00212 (2013.01); A61B 2017/00393 (2013.01); A61B 2018/00339 (2013.01); A61B 2018/00577 (2013.01); A61B 2018/0072 (2013.01); A61B 2018/00821 (2013.01); A61B 2018/00875 (2013.01); A61B 2018/00916 (2013.01); A61B 2090/376 (2016.02)] 18 Claims
OG exemplary drawing
 
1. A system for tumor ablation, the system comprising:
a probe comprising:
a first conductor;
a second conductor disposed distal to the first conductor;
an insulator bushing disposed between the first conductor and the second conductor; and
a first thermocouple to measure a temperature at a location on the second conductor;
a second thermocouple on the second conductor;
a third thermocouple on the second conductor; and
a fourth thermocouple on the second conductor;
a generator to produce a current to be conducted between the first conductor and the second conductor to create an ablation region with a first potential ablation perimeter, and wherein the second thermocouple, the third thermocouple, and the fourth thermocouple respectively define a second point along a second potential ablation perimeter, a third point along a third potential ablation perimeter, and a fourth point along a fourth potential ablation perimeter, wherein each of the potential ablation perimeters is different;
a display; and
a processor to:
monitor the temperature at the first thermocouple;
monitor an impedance of the tissue between the first conductor and the second conductor;
control an output of the generator to decrease the current when the impedance increases and to stop the current when a thermal dose reaches a target threshold;
control the output of the generator based on a type of a procedure being performed; and
configure the display to provide a graphical user interface illustrating the first potential ablation perimeter, the second potential ablation perimeter, the third potential ablation perimeter, and the fourth potential ablation perimeter.