Duke engineers have devised a way to improve the efficiency of lithotripsy -- the demolition of kidney stones using focused shock waves. After decades of research, all it took was cutting a groove near the perimeter of the shock wave-focusing lens and changing its curvature. “I’ve spent more than 20 years investigating the physics and engineering aspects of shock wave lithotripsy,” said Pei Zhong, the Anderson-Rupp Professor of Mechanical Engineering and Materials Science at Duke University. “And now, thanks to the willingness of Siemens (a leading lithotripter manufacturer) to collaborate, we’ve developed a solution that is simple, cost-effective and reliable that can be quickly implemented on their machines.”
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