title: Allium™ TPS--A New Prostatic Stent for the Treatment of Patients with Benign Prostatic Obstruction: The First Report.
abstract: BACKGROUND
  Several prostatic stents were developed in the last three decades, none of which were able to provide a real alternative in patients unfit or unwilling to undergo classical prostatic surgeries. In this study, we report the results of the use of a newly developed prostatic stent--the Allium™ Triangular Prostatic Stent (TPS).
  
  
  METHODS
  The Allium TPS is a highly flexible, nitinol-built polymer-covered stent, which prevents tissue ingrowth and reduces encrustations. Between 2008 and 2014, at two centers (Israel and Turkey), the stent was inserted under local or regional anesthesia in 51 patients with benign prostatic obstruction (BPO) who are unwilling or unfit for surgery. Patients were followed for 12 months from surgery. The primary outcome was symptom improvement as measured by the international prostate symptom score (IPSS) and improvement in peak urinary flow.
  
  
  RESULTS
  Stent insertion was successful in all patients. The mean IPSS decreased from 26.4 to 7.7 on the last follow-up. The mean peak flow increased from 5.5 mL/second before stent insertion to 16.0 mL/second 1 year thereafter. The main adverse effect was transient pain in nine patients. No stent migration or obstruction was seen. Patients reported satisfaction and improvement in quality of life.
  
  
  CONCLUSIONS
  Our short-term results show that Allium TPS is safe and effective for the treatment of patients with BPO.
authors.affiliation: 1 Department of Urology, Dr. Suat Seren Chest Diseases and Surgery Teaching and Research Hospital , Izmir, Turkey .
authors.forename: Guner
authors.initials: G
authors.lastname: Yildiz
authors.affiliation: 2 Department of Urology, Faculty of Medicine, Bnai-Zion Medical Center, Technion Institute of Technology , Haifa, Israel .
authors.forename: Zaher
authors.initials: Z
authors.lastname: Bahouth
authors.affiliation: 2 Department of Urology, Faculty of Medicine, Bnai-Zion Medical Center, Technion Institute of Technology , Haifa, Israel .
authors.forename: Sarel
authors.initials: S
authors.lastname: Halachmi
authors.affiliation: 2 Department of Urology, Faculty of Medicine, Bnai-Zion Medical Center, Technion Institute of Technology , Haifa, Israel .
authors.forename: Gil
authors.initials: G
authors.lastname: Meyer
authors.affiliation: 2 Department of Urology, Faculty of Medicine, Bnai-Zion Medical Center, Technion Institute of Technology , Haifa, Israel .
authors.forename: Ofer
authors.initials: O
authors.lastname: Nativ
authors.affiliation: 2 Department of Urology, Faculty of Medicine, Bnai-Zion Medical Center, Technion Institute of Technology , Haifa, Israel .
authors.forename: Boaz
authors.initials: B
authors.lastname: Moskovitz
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D000497:Alloys; D020684:Cystoscopes; D004724:Endoscopy / Q000379:methods*; D004867:Equipment Design; D006801:Humans; D007557:Israel; D008297:Male; D008875:Middle Aged; D011470:Prostatic Hyperplasia / Q000150:complications / Q000601:surgery*; D011788:Quality of Life; D015607:Stents; D014421:Turkey; D014524:Urethral Obstruction / Q000209:etiology / Q000601:surgery*
chemical_list: D000497:Alloys; C013616:nitinol