VACUUM LOSS DETECTION DURING LASER EYE SURGERY
First Claim
1. A method of detecting loss of vacuum in a patient interface of a laser eye surgery system having control electronics, comprising:
- docking a patient'"'"'s eye to a suction ring of a patient interface which is aligned with an optical axis of the laser eye surgery system;
monitoring a plurality of inputs associated with the docking, comprising;
a video feed of the laser eye surgery through the patient interface;
a physical force sensor that detects movement of the patient'"'"'s eye relative to the patient interface; and
a vacuum sensor connected to a vacuum chamber of the suction ring;
halting or delaying the laser eye surgery if an aggregate of all three inputs is consistent with a threshold likelihood of a significant vacuum leak.
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Accused Products
Abstract
A laser eye surgery system that has a patient interface between the eye and the laser system relying on suction to hold the interface to the eye. The patient interface may be a liquid-filled interface, with liquid used as a transmission medium for the laser. During a laser procedure various inputs are monitored to detect a leak. The inputs may include a video feed of the eye looking for air bubbles in the liquid medium, the force sensors on the patient interface that detect patient movement, and vacuum sensors directly sensing the level of suction between the patient interface and the eye. The method may include combining three monitoring activities with a Bayesian algorithm that computes the probabilities of an imminent vacuum loss event.
33 Citations
20 Claims
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1. A method of detecting loss of vacuum in a patient interface of a laser eye surgery system having control electronics, comprising:
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docking a patient'"'"'s eye to a suction ring of a patient interface which is aligned with an optical axis of the laser eye surgery system; monitoring a plurality of inputs associated with the docking, comprising; a video feed of the laser eye surgery through the patient interface; a physical force sensor that detects movement of the patient'"'"'s eye relative to the patient interface; and a vacuum sensor connected to a vacuum chamber of the suction ring; halting or delaying the laser eye surgery if an aggregate of all three inputs is consistent with a threshold likelihood of a significant vacuum leak. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of detecting loss of vacuum in a patient interface of a laser eye surgery system having control electronics, comprising:
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docking a patient'"'"'s eye to a suction ring of a patient interface which is aligned with an optical axis of the laser eye surgery system; supplying a sterile solution to a space within the patient interface between the patient'"'"'s eye and a posterior surface of a transmissive lens held in the patient interface to form a transmissive chamber through which the laser eye surgery system may operate on the patient'"'"'s eye; monitoring a video feed of the laser eye surgery through the patient interface; monitoring a physical force sensor that detects movement of the patient'"'"'s eye relative to the patient interface; and monitoring a vacuum sensor connected to a vacuum chamber of the suction ring; aggregating data from all of the steps of monitoring with the control electronics and halting or delaying the laser eye surgery if at least two of the inputs is consistent with a threshold likelihood of a significant vacuum leak. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification