Endoscopic ultrasonic surgical aspirator for use in fluid filled cavities
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United States of America Patent
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Jan 18, 2011
Issued Date -
N/A
app pub date -
Jan 12, 2006
filing date -
Jan 12, 2006
priority date (Note) -
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Abstract
An ultrasonic horn assembly is configured so that irrigating fluid can be supplied only to a vibrating tip portion of the ultrasonic horn and so that suction aspiration can occur through a portion of the ultrasonic horn not in contact with the irrigating fluid. Controllers supplying irrigation fluid during a surgical procedure and controlling suction aspiration via monitoring of fluid level in the patient cavity are operatively coupled one to another to coordinate control of the fluid level in the patient cavity. Circuitry controlling power, frequency and amplitude of the tip of the ultrasonic horn occurring as a result of operation of a source of ultrasonic signal generating power controls either or both the supply of irrigation fluid and the suction aspiration so as to minimize damping of vibration of the tip of the ultrasonic horn. An optical viewing element is provided to view the tip of the ultrasonic horn.
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