System and methods for controlling distribution of acoustic energy around a focal point using a focused ultrasound system

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United States of America Patent

PATENT NO 6506171
SERIAL NO

09626176

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Abstract

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A focused ultrasound system includes a plurality of transducer elements disposed about and having an angular position with a central axis. Drive signals drive respective transducer elements that include phase shift values based upon the angular position of each respective transducer element. The phase shift values are based upon an oscillation function that oscillates about the central axis between minimal and maximal phase shift values such that a first on-axis focal zone and a second off-axis focal zone are created. An amplitude and frequency of the oscillation function are controlled to adjust relative acoustic energy levels of the first and second focal zones, and to adjust a radius of the second focal zone, respectively. In addition, the drive signals include an additional predetermined phase shift based upon a radial position of each respective transducer element to adjust a focal distance of the focal zones.

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Patent Owner(s)

Patent OwnerAddress
INSIGHTEC LTDPO BOX 2059 TIRAT CARMEL 3912001

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Brenner, Naama Haifa, IL 5 915
Vitek, Shuki Haifa, IL 57 5774

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