Pressure control in phacoemulsification system
AssigneeAlcon Research, Ltd.
InventorsMikhail Boukhny, Raphael Gordon, Michael D. Morgan, Gary P. Sorensen
Life of this patent
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Abstract
A surgical system comprises a pressurized irrigation fluid source; an irrigation line fluidly coupled to the pressurized irrigation fluid source; a hand piece fluidly coupled to the irrigation line; an irrigation pressure sensor located at or along the pressurized irrigation fluid source or irrigation line; and a controller for controlling the pressurized irrigation fluid source. The controller controls the pressurized irrigation fluid source based on a reading from the irrigation pressure sensor and an estimated flow value modified by a compensation factor.
Claims15
A method of controlling a surgical system having a fluid flow path, the method comprising:
- receiving a pressure reading from an aspiration pressure sensor located along the fluid flow path;
- calculating an estimated fluid flow through the surgical system;
- modifying the estimated fluid flow with a compensation factor;
- and
- controlling a pressurized irrigation fluid source based on the pressure reading and the estimated fluid flow as modified by the compensation factor, the compensation factor based on compression of an irrigation sleeve that restricts flow of irrigation fluid.
Dependencies are inferred from the claim text.