Patent ID: 11872163
Assignee: AMO DEVELOPMENT, LLC
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 5:
6. A method for docking an ophthalmic surgical laser system to a patient's eye,
the laser system comprising a laser delivery head which defines an optical axis for delivering a laser beam into the patient's eye, three or more magnetic field sensors affixed on the laser delivery head and located at defined locations in a plane perpendicular to the optical axis, and a control device coupled to the three or more magnetic field sensors and the laser delivery head,
the method comprising:
(a) installing a patient interface device on the patient's eye, the patient interface device including a magnet configured to generate a magnetic field;
(b) the control device controlling each of the three or more magnetic field sensors to measure a magnitude of the magnetic field generated by the magnet of the patient interface device;
(c) based on comparisons of the measured magnetic field magnitudes from the three or more sensors, the control device determining whether or not the patient interface device is located within a predetermined distance from the optical axis; and
(d) based on comparisons of the measured magnetic field magnitudes from the three or more sensors, the control device moving the laser delivery head toward the patient interface device.