New lens de­sign im­proves kid­ney stone treat­ment

Daily Trust - - HEALTH -

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. Prof. Pei Zhong, “And now, thanks to the will­ing­ness of Siemens (a leading lithotripter man­u­fac­turer) to col­lab­o­rate, we’ve de­vel­oped a so­lu­tion that is sim­ple, cost­ef­fec­tive and re­li­able that can be quickly im­ple­mented on their ma­chines.” The so­lu­tion was to cut a groove near the perime­ter of the back­side of the lens and change its ge­om­e­try.

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