Method of controlling a surgical system based on a rate of change of an operating parameter
AssigneeAlcon Inc.
InventorsMikhail Boukhny, James Y. Chon, Ahmad Salehi, Ann Yadlowsky
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Abstract
A surgical system that is able to sense the onset of an occlusion or other surgical event as well as when an occlusion breaks. To help avoid overheating of the tip, the system of the present invention predicts the temperature of the eye using irrigation flow rate and reduces the power to the handpiece automatically if an overheating situation is predicted. Alternatively or in addition, the system of the present invention monitors the power drawn by the handpiece, which is indicative of the cutting load on the tip, and automatically adjusts the power or stroke of the tip to compensate for increased loads on the tip.
Claims39
A method of controlling a surgical system, the surgical system having an ultrasound handpiece, the ultrasound handpiece having a cutting tip, the method comprising the steps of:
- determining a rate of change of a first operating parameter of the surgical system;
- determining a stage of occlusion based on the rate of change;
- and
- automatically adjusting an amount of power delivered to the cutting tip of the ultrasound handpiece based on the determined stage of occlusion by enabling torsional movement of the cutting tip.
Dependencies are inferred from the claim text.