System and method for modulated surgical procedure irrigation and aspiration

摘要

A method and apparatus for performing modulated fluid delivery and aspiration during a surgical procedure such as phacoemulsification is provided. The method and apparatus include delivering fluid and/or aspirating fluid in a modulated or pulsed manner during a surgical procedure, including applying fluid and/or aspirating fluid in connection with ultrasonic energy at a level and for a time period sufficient to induce transient cavitation. Fluid may be applied and/or aspirated at a timing sequence and duty cycle similar to or different from application of ultrasonic energy delivery.

主权项

1. An apparatus comprising:
a handpiece having a needle and electrical components configured to ultrasonically vibrate said needle; a power source configured to provide pulsed electrical power to the handpiece electrical components; a computing device configured to enable an operator to select an amplitude of the electrical pulses; and an irrigation control unit configured to provide fluid during a surgical procedure conducted in a surgical environment by deforming tubing providing fluid during a surgical procedure, said irrigation control unit configured to provide fluid in a controlled nonrandom manner during at least one modulated fluid burst period, said modulated fluid burst period comprising a fluid pulse within the surgical environment, followed by a de minimis fluid pulse; wherein the apparatus is configured to induce transient cavitation the surgical environment by controlling the handpiece to produce ultrasonic energy pulses at the amplitude for a duration of less than 20 milliseconds while the irrigation control unit is configured to simultaneously provide at least one pressure pulse having a duration of less than 100 milliseconds.