Noninvasive acoustic manipulation of objects in a living body

Oleg A. Sapozhnikov, Adam D. Maxwell, Michael R. Bailey, Bryan W. Cunitz, Mohamed A. Ghanem, Yak-Nam Wang, Vera A. Khokhlova
2020-07-06

In certain medical applications, transmitting an ultrasound beam through the skin to manipulate a solid object within the human body would be beneficial. Such applications include, for example, controlling an ingestible camera or expelling a kidney stone. In this paper, ultrasound beams of specific shapes were designed by numerical modeling and produced using a phased array. These beams were shown to levitate and electronically steer solid objects (3-mm-diameter glass spheres), along preprogrammed paths, in a water bath, and in the urinary bladders of live pigs. Deviation from the intended path was on average <10%. No injury was found on the bladder wall or intervening tissue.
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2020-07-06
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Oleg A. Sapozhnikov
Adam D. Maxwell
Michael R. Bailey
Bryan W. Cunitz
Mohamed A. Ghanem
Yak-Nam Wang
Vera A. Khokhlova
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