Vacuum loss detection during laser eye surgery
Number of patents in Portfolio can not be more than 2000
United States of America
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Mar 18, 2025
Grant Date -
Dec 21, 2023
app pub date -
Aug 30, 2023
filing date -
Aug 30, 2023
priority date (Note) -
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Abstract
Apparatus to treat an eye with an ophthalmic laser system comprises a patient interface having an annular retention structure to couple to an anterior surface of the eye. The retention structure is coupled to a suction line to couple the retention structure to the eye with suction. Liquid is added above the eye to act as a transmissive medium. A coupling sensor is coupled to the suction line to determine coupling of the retention structure to the eye. A separate pressure monitoring circuit having a much smaller volume than the suction line is connected to the annular retention structure to measure suction pressure therein. A system processor coupled to the monitoring pressure sensor includes instructions to interrupt firing of a laser when the pressure measured with a monitoring pressure sensor rises above a threshold amount.
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