CLinical Evaluation of Aspiration for Removal ANd ClearancE of Stones

Inclusion Criteria: * Candidate for ureteroscopy with laser lithotripsy; * Be willing and able to return for and respond to all study-related follow up procedures; and, * Have been informed of the nature of the study and have agreed to the IRB approved informed consent form (ICF). Exclusion Criteria: * Significant morbidities; * Unable to meet the treatment and follow up protocol requirements; and, * Ureteral or kidney abnormalities.