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Automatically pulsing different aspiration levels to an ocular probe

  • US 10,219,940 B2
  • Filed: 11/06/2009
  • Issued: 03/05/2019
  • Est. Priority Date: 11/07/2008
  • Status: Active Grant
First Claim
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1. A method for applying aspiration to a probe, the method comprising:

  • applying a low flow-rate aspiration from a first pump to an aspiration port of the probe;

    detecting that the aspiration port of the probe is insufficiently occluded;

    applying a high flow-rate aspiration from a second pump to the aspiration port of the probe to increase occlusion at the aspiration port of the probe, if the aspiration port of the probe is detected to be insufficiently occluded;

    reducing the high flow-rate aspiration to match an irrigation flow-rate on a condition that the high flow-rate aspiration exceeds the irrigation flow-rate;

    not applying ultrasonic energy to the probe, if the aspiration port of the probe is detected to be insufficiently occluded;

    detecting that the aspiration port of the probe is sufficiently occluded;

    discontinuing the high flow-rate aspiration and reapplying the low flow-rate aspiration to the aspiration port of the probe, if the aspiration port of the probe is detected to be sufficiently occluded; and

    applying ultrasonic energy to the probe, if the aspiration port of the probe is detected to be sufficiently occluded.

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