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Pei Zhong, the Anderson-Rupp Professor of Mechanical Engineering and Materials Science at Duke University, with a modern lithotripsy machine.


This lithotripsy machine shock wave lens was modified by Duke engineers to more efficiently break up kidney stones. Modifications included a groove cut around the perimeter and an alteration in geometry.


Modern lithotripsy machines used to break apart kidney stones have been declining in efficiency for decades. Duke engineers have just modified the shock wave lens to improve treatment. (Credit: Siemens Healthcare)

Read: New Lens Design Drastically Improves Kidney Stone Treatment

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