Kidney Stone Collection Cup StoneScreen Collapsible Plastic Strainer, 12/PackKidney Stone Collection Cup StoneScreen Collapsible Plastic Strainer used to capture renal calculi and for use with patients attempting to pass stones following extracorporeal shock wave lithotripsy. The urine straining device is a collapsible plastic strainer cup designed for both men and women and includes a nylon screen at the bottom of the cup for stone capture Once the stone is captured, it can be placed in the storage space under the lid and