Multiple frequency phacoemulsification needle driver

A system for performing an ocular surgical procedure, comprising:

• a multiple frequency signal source;
• a configurable tuned output filter connected to the multiple frequency signal source;
• and
• a multiple frequency ultrasonic handpiece;
• wherein the multiple frequency signal source operating at a first frequency is configured to drive the configurable filter and the multiple frequency ultrasonic handpiece at the first frequency, the signal source operating at a second frequency is configured to drive the configurable filter and the multiple frequency ultrasonic handpiece at the second frequency, and the configurable filter is configured to address third harmonic and/or higher frequency issues for the multiple frequency ultrasonic handpiece.

A system for operating a phacoemulsification handpiece at multiple operating frequencies, comprising:

• a first sine wave signal source configured to deliver a first sinusoidal signal at a first frequency;
• a second sine wave signal source configured to deliver a second sinusoidal signal at a second frequency differing from the first frequency;
• and
• a multi-tap transformer configured to receive the first sinusoidal signal at a first input tap and the second sinusoidal signal at a second input tap;
• wherein an output tap of the multi-tap transformer connects to the phacoemulsification handpiece and drives the phacoemulsification handpiece at a desired frequency comprising one of the first frequency and the second frequency.