Pulsed ultrasonic device and method
AssigneeSound Surgical Technologies LLC
InventorWilliam W. Cimino
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Abstract
This invention relates generally to ultrasonic surgical apparatus. More particularly, this invention relates to an improved method and apparatus for generating profiled pulses of ultrasonic frequency vibratory energy at a distal surface of an ultrasonic applicator of an ultrasonic surgical instrument for application to tissues of a patient with specific relationships between a magnitude of the pulse of ultrasonic frequency vibratory energy and a duration of the pulse of ultrasonic frequency vibratory energy so that the ultrasonic applicator can be driven to vibratory amplitudes previously not achievable and a more expedient surgical effect obtained. PATENT
Claims6
A method for surgically affecting tissue in an animal by applying ultrasonic frequency vibratory energy comprising:
- applying a first profile of a pulse of ultrasonic frequency vibratory energy said first profile having a maximum amplitude during a first time portion;
- applying a second profile of a pulse of ultrasonic frequency vibratory energy said second profile having a minimum amplitude during a second time portion wherein;
- the first time portion is between one millisecond and fifty milliseconds in duration;
- the second time portion is at least three times greater than the first time portion;
- and
- the maximum amplitude is in the range between two to twenty times the minimum amplitude;
- and repeating the application of said first and second profiles of a pulse of ultrasonic frequency vibratory energy.
Dependencies are inferred from the claim text.