Ablation Efficacy of Contact Side Firing Fiber in Predefined Settings for Treating BPH

November 17, 2025 updated by: Boston Scientific Corporation

Twenty (20) subjects presenting with a hyperplasia enlarged prostate and candidates for surgery will undergo a single treatment for ablation of the prostate using the study device. Follow up visits are scheduled for the day of release from the hospital and at 1 and 3 months post procedure.

The primary objective of this study is to explore Vaporization efficacy and safety when treating BPH (Benign prostatic hyperplasia) with the contact side firing fiber with recommended settings.

Study Overview

Study Type

Interventional

Enrollment (Actual)

20

Phase

  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

    • New York
      • New York, New York, United States, 11215
        • New York Methodist Hospital

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • Subject will be older than 18 years of age
  • Subject was diagnosed with enlarged prostate of ≥ 30 gr volume
  • Subject is a candidate for surgery treatment
  • Subject is willing and has signed the Informed Consent Form
  • AUA score ≥ 12
  • Qmax <15 mL/s

Exclusion Criteria:

  • Need to perform concomitant procedure, other than prostate vaporization
  • PVR > 300 mL
  • Current Urine retention and Pdet <40 cm H20
  • Documented or suspected prostate cancer and / or bladder cancer
  • Neurogenic bladder disorder / neurogenic voiding dysfunction
  • Urethral strictures
  • Previous prostatic, bladder neck, or urethral surgery
  • Known history of spinal cord injury
  • Urogenital trauma
  • Bladder neck stricture
  • Evidence of urinary tract infection
  • History of chronic prostatitis

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: N/A
  • Interventional Model: Single Group Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: Ablation of the prostate
ablation of the prostate will be performed using the study device: Lumenis Pulse P120H Holmium Laser

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Ablation Time
Time Frame: Intraprocedural (procedure time is typically 1 to 3 hours)
Calculate the lasing time (in minutes) to ablate the prostate as an indication for treatment efficiency.
Intraprocedural (procedure time is typically 1 to 3 hours)
Ablation Rate
Time Frame: Baseline and 3-month follow-up visit

Ablation rate is the change in prostate volume measured by trans-rectal ultrasound divided by the procedure time.

Ablation rate= (baseline prostate volume - 3-Month prostate volume in mL) / Procedure time in minutes

Baseline and 3-month follow-up visit
Efficiency of the Laser to Ablate the Prostate
Time Frame: Baseline and 3-month follow-up visit

Ablation efficiency is the change in prostate volume, as measured by trans-urethral ultrasound, between baseline and the 3-month follow-up visit divided by energy.

Efficiency = (Baseline prostate volume in mL - prostate volume at the 3-month follow-up visit) / energy in J

Baseline and 3-month follow-up visit
Safety: Intraoperative Complications
Time Frame: Intraoperative (procedure time is typically 1 to 3 hours)
Number and type of intraoperative complications
Intraoperative (procedure time is typically 1 to 3 hours)
Safety: Perioperative Complications
Time Frame: Post-procedure through 3 months
Number of Re-Catheterizations and number of Readmissions were evaluated within this Outcome Measure. Erectile Dysfunction is reported separately. Other complications with reporting of Level of Severity (mild, moderate, or severe) are listed as part of this Outcome Measure. These other complications were Bleeding, Dysuria, Hematuria, Urgency, Urinary Incontinence, Urinary Retention, Frequency, and Nocturia
Post-procedure through 3 months

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Erectile Dysfunction
Time Frame: Baseline and 3-month follow-up visit
Sum score of International Index of Erectile Function (IIEF-5) questionnaire which measures erectile function, orgasmic function, sexual desire, and satisfaction. Each question is ranked 1-5 with a total sum score of 5 (severe erectile dysfunction) to 25 (normal function).
Baseline and 3-month follow-up visit
Visibility During Procedure
Time Frame: Intraprocedural (procedure time is typically 1 to 3 hours)
Rating on a scale of 1 (Poor) to 5 (Excellent) of the visibility during the procedure
Intraprocedural (procedure time is typically 1 to 3 hours)
Number of Fibers Used During Procedure
Time Frame: Intraprocedural (procedure time is typically 1 to 3 hours)
Number of fibers used during the BPH procedure
Intraprocedural (procedure time is typically 1 to 3 hours)
Catheterization Time
Time Frame: Postoperatively through study completion up to 3 months
Number of days catheter was in place post-ablation of the prostate
Postoperatively through study completion up to 3 months
Hospital Stay Duration
Time Frame: Procedure through discharge from hospital (typically 1 day, but measured through end of study up to 3 months)
Number of days in hospital
Procedure through discharge from hospital (typically 1 day, but measured through end of study up to 3 months)
International Prostate Symptom Score Quality of Life
Time Frame: Baseline, 1-month and 3-month follow-up visits
The International Prostate Symptom Score (IPSS) is an eight-question written screening tool used to screen for, rapidly diagnose, track the symptoms of, and suggest management of the lower urinary tract symptoms of benign prostatic hyperplasia (BPH). The Quality of Life question has a scale of 0-6, with 0=delighted and 6=terrible.
Baseline, 1-month and 3-month follow-up visits
Qmax Uroflow
Time Frame: Baseline, 1-month and 3-month follow-up visits
The maximum urine flow rate (Qmax) is a measure of the quantity of urine excreted in a specified period of time, expressed in cubic centimeters/second (cc/sec).
Baseline, 1-month and 3-month follow-up visits
PVR (Post-void Residual)
Time Frame: Baseline, 1-month and 3-month follow-up visits
Volume of urine remaining in the bladder after voiding, measured via ultrasound
Baseline, 1-month and 3-month follow-up visits
PSA (Prostate-specific Antigen)
Time Frame: Baseline and 3-month follow-up visit
Prostate-specific antigen, or PSA, is a protein produced by cells of the prostate gland. Prostate cancer can cause elevated PSA levels.
Baseline and 3-month follow-up visit
Americal Urological Association (AUA) Symptom Index
Time Frame: Baseline, 1-month and 3-month follow-up visits
The American Urological Association (AUA) Symptom Index assesses the severity of lower urinary tract symptoms in men, particularly related to benign prostatic hyperplasia. The AUA Symptom Score ranges from 0 to 35, with higher scores indicating more severe urinary symptoms related to benign prostatic hyperplasia (BPH).
Baseline, 1-month and 3-month follow-up visits

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

February 1, 2016

Primary Completion (Actual)

November 1, 2017

Study Completion (Actual)

November 1, 2017

Study Registration Dates

First Submitted

January 31, 2016

First Submitted That Met QC Criteria

February 11, 2016

First Posted (Estimated)

February 17, 2016

Study Record Updates

Last Update Posted (Estimated)

November 25, 2025

Last Update Submitted That Met QC Criteria

November 17, 2025

Last Verified

November 1, 2025

More Information

Terms related to this study

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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