Use of The Spanner Temporary Prostatic Stent as an Alternative to a Urinary Catheter to Achieve Bladder Drainage in Men

Inclusion Criteria: * Age \> 45 years; * In urinary retention and catheterized (indwelling or intermittent) for less than 180 days; * Documented diagnostic history (within 180 days of study) of detrusor contractility (\>= 15 cmH2O) confirmed via pressure-flow test; * Negative Urinalysis on Visit 1; * Not a candidate for pharmacologic, minimally invasive or surgical treatment of the prostate; * Charlson Weighted Index of Comorbidity Score \>= 1; * Willing and able to sign the Informed Consent Form; * Willing and able to complete the follow-up protocol requirements; * Experiencing catheter-induced discomfort. Exclusion Criteria: * Current use of a urinary catheter daily for greater than 180 consecutive days immediately preceding entering into the study; * Positive Urinalysis on Visit 1; * Current or recent (within the last 6 months) urinary tract disease including urethral stricture, bladder stones, and other significant urological conditions or surgery; * Surgery altering the normal uro-genital anatomy or abnormal urethral anatomy that affect the function of the lower urinary tract; * History of conditions associated with neurogenic bladder, including spinal cord injury, multiple sclerosis, or Parkinson's disease; * Use of anticholinergic medication; * Gross hematuria when catheter is removed on Visit 1; * Known or suspected prostate cancer; * Prior pelvic irradiation therapy; * Prostatic urethral length \< 4 cm or \> 9 cm (combined length from the top proximal side of the bladder neck to the bottom distal side of the external sphincter); * Intravesical enlargement of the median lobe of the prostate.