US 11,957,433 B2
Feedback detection for a treatment device
Jayant Bhawalkar, Auburndale, MA (US); Charles Holland Dresser, Wayland, MA (US); and Rajender Katkam, Boston, MA (US)
Assigned to Avava, Inc., Waltham, MA (US)
Filed by Avava, Inc., Waltham, MA (US)
Filed on Mar. 26, 2021, as Appl. No. 17/214,168.
Application 17/214,168 is a division of application No. 16/851,075, filed on Apr. 16, 2020, granted, now 11,013,413.
Application 16/851,075 is a continuation of application No. 16/447,937, filed on Jun. 20, 2019, granted, now 11,457,816.
Claims priority of provisional application 62/688,913, filed on Jun. 22, 2018.
Claims priority of provisional application 62/688,855, filed on Jun. 22, 2018.
Claims priority of provisional application 62/688,940, filed on Jun. 22, 2018.
Prior Publication US 2021/0212568 A1, Jul. 15, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. A61B 5/00 (2006.01); A61B 17/00 (2006.01); A61B 18/00 (2006.01); A61B 18/20 (2006.01); A61B 90/20 (2016.01); A61N 1/44 (2006.01); A61N 5/06 (2006.01); H05H 1/46 (2006.01)
CPC A61B 5/0068 (2013.01) [A61B 5/0064 (2013.01); A61B 5/4836 (2013.01); A61B 5/742 (2013.01); A61B 18/201 (2013.01); A61B 18/203 (2013.01); A61B 90/20 (2016.02); A61N 1/44 (2013.01); A61N 5/0616 (2013.01); A61B 5/443 (2013.01); A61B 2017/00057 (2013.01); A61B 2017/0019 (2013.01); A61B 2018/00458 (2013.01); A61B 2018/00642 (2013.01); A61B 2018/00904 (2013.01); A61B 2018/202 (2013.01); A61B 2018/20355 (2017.05); A61B 2018/20361 (2017.05); A61N 2005/0644 (2013.01); H05H 1/46 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A method comprising:
converging, using a focus optic, an electromagnetic radiation (EMR) beam to a focal region located along an optical axis;
detecting, using an optical detector, a width of a signal radiation emanating from an interaction of the EMR beam and a surface of a window intersecting the optical axis, wherein the width of the signal radiation represents a transverse width of the EMR beam incident at the surface of the window;
determining, using a controller, a reference position along the optical axis based on a position of the focal region corresponding to a minimum width of the EMR beam incident at a surface of the window,
a portion of the focal region being substantially coincident with the surface of the window within a tolerance no greater than 30 micrometers; and
translating the focal region to a treatment position, wherein the treatment position is at a predetermined distance from the reference position.