US 11,865,044 B2
Ophthalmic docking system with 3-dimensional automatic positioning using differential RF coupling
Harvey I. Liu, Fremont, CA (US); John P. Beale, San Jose, CA (US); and Jose L. Garcia, Fremont, CA (US)
Assigned to AMO Development, LLC, Irvine, CA (US)
Filed by AMO Development, LLC, Santa Ana, CA (US)
Filed on Jul. 6, 2022, as Appl. No. 17/810,981.
Application 17/810,981 is a continuation of application No. 16/803,914, filed on Feb. 27, 2020, granted, now 11,382,793.
Application 16/803,914 is a continuation of application No. 15/782,759, filed on Oct. 12, 2017, granted, now 10,575,988, issued on Mar. 3, 2020.
Prior Publication US 2022/0339027 A1, Oct. 27, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. A61F 9/009 (2006.01); A61F 9/008 (2006.01); A61B 90/98 (2016.01); A61B 3/10 (2006.01); A61B 17/00 (2006.01); A61B 34/20 (2016.01)
CPC A61F 9/008 (2013.01) [A61B 90/98 (2016.02); A61F 9/009 (2013.01); A61B 2017/00477 (2013.01); A61B 2034/2051 (2016.02); A61F 2009/00846 (2013.01); A61F 2009/00855 (2013.01)] 14 Claims
OG exemplary drawing
 
1. An ophthalmic surgical laser system comprising:
a laser delivery head, including optics which define an optical axis for delivering a laser beam to an eye of a patient;
a patient interface device having an RF (radio frequency) antenna configured to generate an RF signal;
three or more RF antennas affixed on the laser delivery head and located at defined locations in a plane perpendicular to the optical axis, each capable of measuring the RF signal generated by the RF antenna of the patient interface device, and
a control device electrically coupled to the three or more RF antennas and the laser delivery head, and configured to:
control each of the three or more RF antennas to measure the RF signal generated by the RF antenna of the patient interface device, and
based on comparisons of the measured RF signals from the three or more RF antennas, determine whether or not the patient interface device is located within a predetermined distance from the optical axis, and
based on comparisons of the measured RF signals from the three or more RF antennas, move the laser delivery head toward the patient interface device.