System and method for pulsed ultrasonic power delivery employing cavitational effects
First Claim
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1. A method for delivering energy during a surgical procedure performed within a surgical environment comprising a fluid, comprising:
- applying energy at a first energy level sufficient to induce transient cavitation within the fluid; and
providing energy at a predetermined period after attaining transient cavitation within the fluid, said providing energy comprising applying energy at a second energy level lower than the first energy level.
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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.
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Citations
28 Claims
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1. A method for delivering energy during a surgical procedure performed within a surgical environment comprising a fluid, comprising:
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applying energy at a first energy level sufficient to induce transient cavitation within the fluid; and providing energy at a predetermined period after attaining transient cavitation within the fluid, said providing energy comprising applying energy at a second energy level lower than the first energy level. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method of delivering ultrasonic energy during a tissue removal procedure employed in association with a fluid, comprising:
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applying energy at a high energy amplitude level capable of inducing transient cavitation within the fluid; and providing energy at a low energy amplitude level, thereby having the effect of minimizing adverse tissue damage resulting from ultrasonic energy transmission. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A method for providing modulated ultrasonic energy to an ocular region during a phacoemulsification procedure, the method comprising:
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applying energy to the ocular region at a high energy level calculated to induce transient cavitation within fluid in the ocular region, said energy applying occurring for a first predetermined time; reducing application of energy to the ocular region after said first predetermined time; waiting for a second predetermined period of time; and repeating said applying and reducing to the ocular region. - View Dependent Claims (16, 17, 18)
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19. A surgical method, comprising:
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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 (20, 21, 22, 23, 24, 25, 26, 27, 28)
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Specification