The purpose of this study is to evaluate the feasibility of the Cook Ureteral Stent to reduce post-stent placement pain and urinary symptoms in patients following ureteroscopy for urolithiasis.

Inclusion Criteria:

• Patient is undergoing ureteroscopy for urolithiasis in which temporary ureteral stenting is indicated

Exclusion Criteria:

• Patient is unwilling or unable to sign and date the informed consent
• Patient is unwilling to comply with the follow-up study schedule
• Patient is pregnant, breast-feeding, or planning to become pregnant during the course of the study
• Patient is currently taking anti-cholinergic or other anti-spasm medications
• Patient is currently taking sildenafil, tadalafil, or vardenafil
• Patient has a known sensitivity to alpha-blocker medications
• Patient is currently undergoing chemotherapy or radiation therapy
• Patient has an active urinary tract infection
• Patient is in chronic renal failure, on hemodialysis, or on chronic peritoneal dialysis
• Patient requires bilateral shock wave lithotripsy, bilateral stents, or has bilateral symptomatic kidney stones
• Patient has had a ureteral stent within the past three months in either ureter
• Patient is unable to accurately detect or report bladder function or pain
• Patient has chronic pain