System and method for pulsed ultrasonic power delivery employing cavitational effects
5 Assignments
0 Petitions
Accused Products
Abstract
A method and apparatus for delivering energy during a surgical procedure such as phacoemulsification is provided. The method and apparatus include delivering energy during a surgical procedure, including applying energy at a level and for a time period sufficient to induce transient cavitation, and reducing applied energy after applying energy during a second nonzero lower energy period.
-
Citations
85 Claims
-
1. (canceled)
-
2-62. -62. (canceled)
-
63. A surgical method, comprising:
-
applying transient energy to an opthalmic surgical area comprising a fluid, said transient energy applying means applying energy at an amplitude and for a time period sufficient to induce transient cavitation within the fluid; and
reducing said transient energy to a lower amplitude energy level subsequent to said time period, thereby reducing risk of energy related injury. - View Dependent Claims (64, 65, 66, 67, 68, 69, 70, 71, 72)
-
-
73. An apparatus comprising:
-
a handpiece having a needle, the handpiece configured to ultrasonically vibrate said needle;
a power source configured to provide pulsed electrical power to the handpiece;
an input device configured to enable an operator to select an amplitude of the ultrasonic vibration; and
a controller configured to control ultrasonic power supplied from the power source to the handpiece during a surgical procedure conducted in a surgical environment having a fluid associated therewith, said controller configured to control ultrasonic power supplied by applying power at a level and for a time period sufficient to induce transient cavitation in the fluid and reduce power after said time period to a lower level, thereby decreasing likelihood of injury. - View Dependent Claims (74, 75, 76, 77, 78, 79, 80)
-
-
81. An apparatus comprising:
-
a handpiece having a needle, the handpiece configured to ultrasonically vibrate said needle;
a power source configured to provide pulsed electrical power to the handpiece;
an input device configured to enable an operator to select an ultrasonic amplitude of ultrasonic vibration; and
a controller configured to control oscillatory mechanical power supplied from the power source to the handpiece, said controller configured to control oscillatory mechanical power supplied by applying power at a level and for a time period calculated to induce transient cavitation within a surgical environment wherein the apparatus is employed. - View Dependent Claims (82, 83, 84, 85)
-
Specification