System and method for pulsed ultrasonic power delivery employing cavitation effects
First Claim
Patent Images
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.
1 Assignment
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
62 Claims
-
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. - View Dependent Claims (2, 3, 4, 5, 6, 7)
-
-
8. A method of delivering ultrasonic energy during a tissue removal procedure employed in association with a fluid, comprising:
-
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)
-
-
15. A surgical apparatus, comprising:
-
means for applying transient energy to a 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
means for 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 (16, 17, 18, 19, 20, 21, 22, 23, 24)
-
-
25. A method for providing modulated ultrasonic energy to an ocular region during a phacoemulsification procedure, the method comprising:
-
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 (26, 27, 28)
-
-
29. An apparatus comprising:
-
a handpiece having a needle and electrical means for ultrasonically vibrating said needle;
power source means for providing pulsed electrical power to the handpiece electrical means;
input means for enabling an operator to select an amplitude of the electrical pulses;
means for providing fluid from the handpiece needle; and
control means for controlling ultrasonic power supplied to the handpiece during a surgical procedure conducted in a surgical environment having a fluid associated therewith, said control means controlling ultrasonic power supplied by applying power at a level and for a time period sufficient to induce transient cavitation in the fluid and reducing power after said time period to a lower level, thereby decreasing likelihood of injury. - View Dependent Claims (30, 31, 32, 33, 34, 35, 36, 37)
-
-
38. An apparatus comprising:
-
a handpiece having a needle and electrical means for ultrasonically vibrating said needle;
power source means for providing pulsed electrical power to the handpiece electrical means;
input means for enabling an operator to select an amplitude of the electrical pulses;
means for providing fluid from the handpiece needle; and
control means for controlling oscillatory mechanical power supplied to the handpiece, said control means controlling 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 (39, 40, 41, 42, 43)
-
-
44. A method for delivering ultrasound energy in an environment, comprising:
-
initially applying ultrasound energy at a level and for a time period sufficient to induce transient cavitation in the environment; and
reducing applied ultrasound energy after initially applying during a second nonzero lower ultrasound energy period. - View Dependent Claims (45, 46, 47, 48, 49, 50, 51, 52)
-
-
53. A method for delivering ultrasound energy within an environment comprising dissolved gas, the method comprising:
applying a relatively high level of ultrasound energy within the environment sufficient to induce transient cavitation therein, said transient cavitation comprising relatively rapid expansion and forceful collapse of dissolved gas within the environment resulting from force associated with the ultrasound energy for a relatively short duration of time. - View Dependent Claims (54, 55, 56, 57, 58, 59, 60, 61, 62)
Specification