Preclinical Testing of a Combination Stone Basket and Ureteral Balloon to Extract Ureteral Stones.

Massoudi R, Metzner TJ, Bonneau B, Ngo TC, Shinghal R, Leppert JT. Preclinical Testing of a Combination Stone Basket and Ureteral Balloon to Extract Ureteral Stones. Journal of endourology. 2018 Feb 1; 32(2):96-99.

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Abstract:

We have developed the Peralta Stone Extraction System to increase the safety of ureteral stone extraction. The device combines a nitinol stone basket and low-pressure balloon into a single device. After visualization, the stone is captured in the tipless nitinol basket and enveloped by a low-pressure balloon. We tested the performance of device prototypes in a porcine model using stone mimics with diameters ranging from 4.2 to 6.2?mm. Stones extracted with the device required less force when compared with stones in a standard ureteral stone basket. The force reduction was most pronounced for stones greater than 4.2?mm in diameter, and when traversing a ureteral stenosis model. In conclusion, a combination stone basket and balloon device may provide a new and safer way to extract ureteral stones.