US 12,453,595 B2
Systems and methods for delivering modulated radiofrequency power to treat tissue
William Lucas Churchill, Bolton, MA (US); and Danielle Gline Allen, Derry, NH (US)
Assigned to Hologic, Inc., Marlborough, MA (US)
Filed by HOLOGIC, INC., Marlborough, MA (US)
Filed on Jan. 18, 2024, as Appl. No. 18/416,522.
Application 18/416,522 is a continuation of application No. 18/093,480, filed on Jan. 5, 2023, granted, now 11,918,276.
Application 18/093,480 is a continuation of application No. 16/998,836, filed on Aug. 20, 2020, granted, now 11,559,348, issued on Jan. 24, 2023.
Application 16/998,836 is a continuation of application No. 16/001,366, filed on Jun. 6, 2018, granted, now 10,779,877, issued on Sep. 22, 2020.
Application 16/001,366 is a continuation of application No. 14/574,070, filed on Dec. 17, 2014, granted, now 10,004,553, issued on Jun. 26, 2018.
Claims priority of provisional application 61/920,152, filed on Dec. 23, 2013.
Prior Publication US 2024/0156510 A1, May 16, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. A61B 18/12 (2006.01); A61B 18/14 (2006.01); A61B 18/00 (2006.01)
CPC A61B 18/1233 (2013.01) [A61B 2018/00267 (2013.01); A61B 2018/00559 (2013.01); A61B 2018/00577 (2013.01); A61B 2018/00642 (2013.01); A61B 2018/00702 (2013.01); A61B 2018/0072 (2013.01); A61B 2018/00875 (2013.01); A61B 2018/126 (2013.01); A61B 2018/1475 (2013.01)] 19 Claims
OG exemplary drawing
 
17. A system for delivering RF power to tissue, comprising:
a radiofrequency (RF) generator; and
a controller operatively coupled with the RF generator, wherein the controller is configured to
(a) cause the generator to deliver RF power to tissue electrically coupled to the generator,
(b) determine a target tissue impedance as a function of time by scaling a preexisting tissue impedance curve based upon a measured initial impedance of the tissue, and
(c) modulate the delivery of RF power so that a measured impedance of the tissue tracks the target tissue impedance as a function of time.