Access Sheath and Stent Trial

Inclusion Criteria

• •Provision of signed and dated informed consent form
• •Stated willingness to comply with all study procedures and availability for the duration of the study
• •Planned ureteroscopy using a Ureteral Access Sheath (UAS) for treatment of unilateral kidney and/or ureteral stones in patients that have an existing ureteral stent (pre-stented)
• •Planned treatment of unilateral renal and/or ureteral stones, in a single procedure.
• •Renal stone defined as only renal location of stone(s)
• •Ureteral stone defined as ureteral only location of stone(s)
• •Ureteral and renal stone(s)
• •No evidence of significant ureteral injury on intra-operative assessment (Post-Ureteroscopy Lesion Scale (PULS) Grade 0 or 1)
• •Ability and willingness to complete and adhere to survey questions and responses throughout study duration.