Patent ID: 7169123
Filing Date: 2007-01-30
Classification: A61B,A61F,B06B

Abstract:
1. A phacoemulsification apparatus comprising: a phacoemulsification handpiece having a needle, the needle configured to be ultrasonically vibrated; a power source configured to provide pulsed electrical power to the handpiece; an input enabling a surgeon to select an ultrasonic pulse amplitude and a pulse duty cycle supplied to the handpiece; and a computer programmed to respond to the selected pulse amplitude and the selected pulse duty cycle, the computer further programmed to control the power source such that the pulsed electrical power has an off duty cycle to ensure heat dissipation before a subsequent pulse is activated, wherein said computer controls the power source to provide pulsed electrical power with a pulse repetition rate of between about 25 and about 2000 pulses per second.