Memokath® 044TW Stent for Treatment of Urethral Stricture

Inclusion Criteria:

1. Males > 21 years of age

2. Recurrent stricture of the bulbar urethra:

3. < 50 mm in length on urethrography; and which

4. has a segment unable to accommodate a 16Fr flexible cystoscope

5. Healthy tissue on both sides of stent

6. Urinary flow in the abnormal range of the Siroky nomogram.

7. Written informed consent obtained prior to participation in the study

8. Patients must be available for all follow-up visits.

Exclusion Criteria:

1. Strictures:

2. outside the bulbous urethra

3. associated with, or suspected to be, urethral carcinoma

4. secondary to pelvic distraction injuries

5. Inability to enlarge the bulbar urethral stricture to > 26 Fr.

6. Presence of any other urologic implant

7. Presence of urethral diverticuli

8. History of hypospadias repair

9. Presence or prior history of balanitis xerotica obliterans.

10. Uncontrolled bleeding disorder

11. Active urinary tract infection

12. Any urological condition that would be likely to require additional urethralinstrumentation during the period of the investigation, including, but not limited to,benign prostatic hypertrophy requiring treatment; use of alpha blockers; activeprostate cancer; an unevaluated elevated prostate-specific antigen (PSA); bladdermalignancy; or any recurrent urinary stone formation.

13. Serum creatinine > 2.0 mg/dl or evidence of progressive renal disease

14. Concurrent participation in another clinical investigation

15. Current illness that might confound the results of this investigation

16. Inability to participate in all of the necessary study activities

17. Inability or unwillingness to return for all required follow-up visits

18. Inability or unwillingness to sign the patient informed consent document