Study Results
The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.
Basic Information
Get a concise snapshot of the trial, including recruitment status, study phase, enrollment targets, and key timeline milestones.
UNKNOWN
NA
30 participants
INTERVENTIONAL
2016-04-30
2020-01-31
Brief Summary
Review the sponsor-provided synopsis that highlights what the study is about and why it is being conducted.
Related Clinical Trials
Explore similar clinical trials based on study characteristics and research focus.
The Zenflow Spring System Safety, Performance and Effectiveness Study
NCT03595735
The Zenflow Spring System Safety and Performance Study (ZEST CAN)
NCT04309695
The Zenflow Spring System EU Safety and Performance Study
NCT03577236
Safety and Effectiveness Study of the Zenflow Spring System
NCT04987138
Use of Autologous Adipose-Derived Stem/Stromal Cells (AD-cSVF) in Symptomatic Benign Prostate Hypertrophy
NCT02961114
Detailed Description
Dive into the extended narrative that explains the scientific background, objectives, and procedures in greater depth.
Conditions
See the medical conditions and disease areas that this research is targeting or investigating.
Study Design
Understand how the trial is structured, including allocation methods, masking strategies, primary purpose, and other design elements.
NA
SINGLE_GROUP
TREATMENT
NONE
Study Groups
Review each arm or cohort in the study, along with the interventions and objectives associated with them.
Treatment Group
Receives intervention with the Zenflow Spring System.
Zenflow Spring System
The Zenflow Spring is a nitinol urethral implant for the treatment of Lower Urinary Tract Symptoms (LUTS) that arise due to bladder outlet obstruction (BOO), secondary to the presence of Benign Prostatic Hypertrophy (BPH). The device is intended to be a permanent implant however it may be removed if necessary.
Interventions
Learn about the drugs, procedures, or behavioral strategies being tested and how they are applied within this trial.
Zenflow Spring System
The Zenflow Spring is a nitinol urethral implant for the treatment of Lower Urinary Tract Symptoms (LUTS) that arise due to bladder outlet obstruction (BOO), secondary to the presence of Benign Prostatic Hypertrophy (BPH). The device is intended to be a permanent implant however it may be removed if necessary.
Eligibility Criteria
Check the participation requirements, including inclusion and exclusion rules, age limits, and whether healthy volunteers are accepted.
Inclusion Criteria
2. Baseline IPSS score \> 13, and a baseline Quality of Life (Qol) question score \> 3
3. Prostate volume 25 - 80 cc by Trans Rectal Ultrasound (TRUS), measured within past 90 days
4. Anterior prostatic urethral length 2.5 - 4.0 cm by cystoscopy, as measured from bladder neck to verumontanum. TRUS will be accepted as a primary screening measure.
5. Failed or intolerant to medication regimen for the treatment of LUTS.
Exclusion Criteria
Participants will be excluded from participating in this trial if they meet any of the following criteria:
1. Obstructive median prostatic lobe or high bladder neck
2. Urethral stricture, meatal stenosis, or bladder neck obstruction - either current, or recurrent requiring 2 or more dilatations
3. Elevated Prostate Specific Antigen (PSA) (age 50-70 PSA ≥4; age 70+ PSA ≥6.5) unless negative biopsy within last 3 months, or a positive biopsy
4. Post-void residual volume (PVR) \> 250 ml, if not in acute retention 4a. No maximum post void residual volume required if patient in acute or chronic urinary retention. (New Zealand Only, up to 5 patients)
5. Peak urinary flow rate \> 12 ml/second, with ≥ 125 ml voided volume at baseline. 5a. No maximum urinary flow or minimum voided volume required if participant in acute or chronic urinary retention. (New Zealand Only, up to 5 patients)
6. History of chronic urinary retention. (New Zealand Only, up to 5 patients)
7. History of neurogenic bladder
8. Compromised renal function (e.g., serum creatinine \> 1.8 mg/dl)
9. Concomitant Urinary Tract Infection (UTI)
10. Concomitant bladder stones
11. Confirmed or suspected prostate/bladder cancer
12. Previous pelvic irradiation or radical pelvic surgery
13. Previous prostate surgery, stent implantations, laser prostatectomy, hyperthermia or another invasive treatment to the prostate
14. Chronic prostatitis, or recurring prostatitis within the past 12 months
15. Serious concurrent medical conditions such as uncontrolled diabetes
16. Known allergy to nickel
17. Life expectancy less than 12 months
18. Use of concomitant medications (e.g., anticholinergics, antispasmodics or antidepressants) affecting bladder function
19. Anti-coagulant, anti-platelet, or thrombolytic medication other than Acetylsalicylic Acid (ASA) or Clopidogrel. ASA and Clopidogrel must be ceased 7 days prior to the procedure.
20. 5--reductase inhibitors within 6 months of pre-treatment evaluation unless evidence of same drug dose for at least 6 months with a stable voiding pattern (the drug dose should not be altered or discontinued for entrance into or throughout the study).
21. -blockers within 2 weeks of pre-treatment evaluation unless evidence of same drug dose for at least 6 months with a stable voiding pattern (the drug dose should not be altered or discontinued for entrance into or throughout the study).
22. Future fertility concerns
23. Any severe illness that might prevent study completion or would confound study results
50 Years
80 Years
MALE
No
Sponsors
Meet the organizations funding or collaborating on the study and learn about their roles.
Zenflow, Inc.
INDUSTRY
Responsible Party
Identify the individual or organization who holds primary responsibility for the study information submitted to regulators.
Principal Investigators
Learn about the lead researchers overseeing the trial and their institutional affiliations.
Peter Gilling, MD
Role: PRINCIPAL_INVESTIGATOR
Tauranga Urology Research Ltd.
Locations
Explore where the study is taking place and check the recruitment status at each participating site.
MBAL "Tokuda Bolnitsa Sofia" AD
Sofia, , Bulgaria
RoundHay Medical Center
Nelson South, Nelson Region, New Zealand
Tauranga Urology Research Ltd
Tauranga, , New Zealand
Countries
Review the countries where the study has at least one active or historical site.
References
Explore related publications, articles, or registry entries linked to this study.
Charles J, Valenti L, Britt H. BPH - management in general practice. Aust Fam Physician. 2011 Oct;40(10):757.
Woo HH, Gillman MP, Gardiner R, Marshall V, Lynch WJ. A practical approach to the management of lower urinary tract symptoms among men. Med J Aust. 2011 Jul 4;195(1):34-9. doi: 10.5694/j.1326-5377.2011.tb03185.x.
Milani S, Djavan B. Lower urinary tract symptoms suggestive of benign prostatic hyperplasia: latest update on alpha-adrenoceptor antagonists. BJU Int. 2005 Jun;95 Suppl 4:29-36. doi: 10.1111/j.1464-410X.2005.05485.x.
Schelin S, Geertsen U, Walter S, Spangberg A, Duelund-Jacobsen J, Kroyer K, Hjertberg H, Vatne V, Richthoff J, Nordling J. Feedback microwave thermotherapy versus TURP/prostate enucleation surgery in patients with benign prostatic hyperplasia and persistent urinary retention: a prospective, randomized, controlled, multicenter study. Urology. 2006 Oct;68(4):795-9. doi: 10.1016/j.urology.2006.05.020.
Bruskewitz RC, Larsen EH, Madsen PO, Dorflinger T. 3-year followup of urinary symptoms after transurethral resection of the prostate. J Urol. 1986 Sep;136(3):613-5. doi: 10.1016/s0022-5347(17)44991-3.
Thomas JA, Tubaro A, Barber N, d'Ancona F, Muir G, Witzsch U, Grimm MO, Benejam J, Stolzenburg JU, Riddick A, Pahernik S, Roelink H, Ameye F, Saussine C, Bruyere F, Loidl W, Larner T, Gogoi NK, Hindley R, Muschter R, Thorpe A, Shrotri N, Graham S, Hamann M, Miller K, Schostak M, Capitan C, Knispel H, Bachmann A. A Multicenter Randomized Noninferiority Trial Comparing GreenLight-XPS Laser Vaporization of the Prostate and Transurethral Resection of the Prostate for the Treatment of Benign Prostatic Obstruction: Two-yr Outcomes of the GOLIATH Study. Eur Urol. 2016 Jan;69(1):94-102. doi: 10.1016/j.eururo.2015.07.054. Epub 2015 Aug 15.
Reich O, Gratzke C, Bachmann A, Seitz M, Schlenker B, Hermanek P, Lack N, Stief CG; Urology Section of the Bavarian Working Group for Quality Assurance. Morbidity, mortality and early outcome of transurethral resection of the prostate: a prospective multicenter evaluation of 10,654 patients. J Urol. 2008 Jul;180(1):246-9. doi: 10.1016/j.juro.2008.03.058. Epub 2008 May 21.
Mandeville J, Gnessin E, Lingeman JE. New advances in benign prostatic hyperplasia: laser therapy. Curr Urol Rep. 2011 Feb;12(1):56-61. doi: 10.1007/s11934-010-0153-1.
Ahyai SA, Lehrich K, Kuntz RM. Holmium laser enucleation versus transurethral resection of the prostate: 3-year follow-up results of a randomized clinical trial. Eur Urol. 2007 Nov;52(5):1456-63. doi: 10.1016/j.eururo.2007.04.053. Epub 2007 Apr 25.
Bachmann A, Tubaro A, Barber N, d'Ancona F, Muir G, Witzsch U, Grimm MO, Benejam J, Stolzenburg JU, Riddick A, Pahernik S, Roelink H, Ameye F, Saussine C, Bruyere F, Loidl W, Larner T, Gogoi NK, Hindley R, Muschter R, Thorpe A, Shrotri N, Graham S, Hamann M, Miller K, Schostak M, Capitan C, Knispel H, Thomas JA. 180-W XPS GreenLight laser vaporisation versus transurethral resection of the prostate for the treatment of benign prostatic obstruction: 6-month safety and efficacy results of a European Multicentre Randomised Trial--the GOLIATH study. Eur Urol. 2014 May;65(5):931-42. doi: 10.1016/j.eururo.2013.10.040. Epub 2013 Nov 11.
Gao YA, Huang Y, Zhang R, Yang YD, Zhang Q, Hou M, Wang Y. Benign prostatic hyperplasia: prostatic arterial embolization versus transurethral resection of the prostate--a prospective, randomized, and controlled clinical trial. Radiology. 2014 Mar;270(3):920-8. doi: 10.1148/radiol.13122803. Epub 2013 Nov 13.
Bouza C, Lopez T, Magro A, Navalpotro L, Amate JM. Systematic review and meta-analysis of Transurethral Needle Ablation in symptomatic Benign Prostatic Hyperplasia. BMC Urol. 2006 Jun 21;6:14. doi: 10.1186/1471-2490-6-14.
Roehrborn CG, Rukstalis DB, Barkin J, Gange SN, Shore ND, Giddens JL, Bolton DM, Cowan BE, Cantwell AL, McVary KT, Te AE, Gholami SS, Moseley WG, Chin PT, Dowling WT, Freedman SJ, Incze PF, Coffield KS, Borges FD, Rashid P. Three year results of the prostatic urethral L.I.F.T. study. Can J Urol. 2015 Jun;22(3):7772-82.
Peyton CC, Badlani GH. The management of prostatic obstruction with urethral stents. Can J Urol. 2015 Oct;22 Suppl 1:75-81.
Oesterling JE. A permanent, epithelializing stent for the treatment of benign prostatic hyperplasia. Preliminary results. J Androl. 1991 Nov-Dec;12(6):423-8.
Perry MJ, Roodhouse AJ, Gidlow AB, Spicer TG, Ellis BW. Thermo-expandable intraprostatic stents in bladder outlet obstruction: an 8-year study. BJU Int. 2002 Aug;90(3):216-23. doi: 10.1046/j.1464-410x.2002.02888.x.
Shore ND, Dineen MK, Saslawsky MJ, Lumerman JH, Corica AP. A temporary intraurethral prostatic stent relieves prostatic obstruction following transurethral microwave thermotherapy. J Urol. 2007 Mar;177(3):1040-6. doi: 10.1016/j.juro.2006.10.059.
Yildiz G, Bahouth Z, Halachmi S, Meyer G, Nativ O, Moskovitz B. Allium TPS--A New Prostatic Stent for the Treatment of Patients with Benign Prostatic Obstruction: The First Report. J Endourol. 2016 Mar;30(3):319-22. doi: 10.1089/end.2015.0593. Epub 2015 Nov 17.
Song HY, Kim CS, Jeong IG, Yoo D, Kim JH, Nam DH, Bae JI, Park JH. Placement of retrievable self-expandable metallic stents with barbs into patients with obstructive prostate cancer. Eur Radiol. 2013 Mar;23(3):780-5. doi: 10.1007/s00330-012-2650-8. Epub 2012 Sep 16.
Armitage JN, Cathcart PJ, Rashidian A, De Nigris E, Emberton M, van der Meulen JH. Epithelializing stent for benign prostatic hyperplasia: a systematic review of the literature. J Urol. 2007 May;177(5):1619-24. doi: 10.1016/j.juro.2007.01.005.
Other Identifiers
Review additional registry numbers or institutional identifiers associated with this trial.
CLIN-0002
Identifier Type: -
Identifier Source: org_study_id
More Related Trials
Additional clinical trials that may be relevant based on similarity analysis.