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NCT Number: NCT06725212

Evaluation of the Water Vapor Thermal Therapy System for the Treatment of Benign Prostatic Hyperplasia

To evaluate the efficacy and safety of the Water Vapor Thermal Therapy system for the treatment of Benign Prostatic Hyperplasia under the premise of ensuring the safety of the subjects and ensuring the scientific nature of the clinical trial. The primary safety endpoint will be device-related (serious) adverse events. The primary effectiveness endpoint will be changes (treatment group vs control group) from baseline in International Prostate Symptom Score (IPSS) 3 months after medical device intervention.

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Key information

Conditions

Benign Prostatic Hyperplasia Genital Diseases Genital Diseases, Male Male Urogenital Diseases Prostatic Diseases Prostatic Hyperplasia Urogenital Diseases

Age range

45 year–80 year

Sex eligibility

Male

Study type

Interventional

Phase

Not applicable

Primary location

The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China

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Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Men aged 45-80 years (inclusive) with symptoms secondary to BPH and requiring invasive intervention.
  • International Prostate Symptom Score (IPSS) ≥13 points.
  • Maximum urinary flow rate (Qmax): ≤15 ml/s, with a minimum urine volume of ≥125 ml.
  • Post-urination residual urine volume (PVR): ≤250 ml.
  • Prostate volume measured by MRI: 30~80 cm³ (including 30 cm³ and 80 cm³).
  • Voluntarily participate in the clinical trial and sign the informed consent form.

Exclusion criteria

  • Malignant lesions of the urinary system, such as prostate cancer or bladder cancer, or other systemic advanced malignant tumors (e.g., gastric cancer, liver cancer, lung cancer).
  • Patients with difficulty inserting instruments due to urethral stenosis or bladder neck contracture.
  • Severe coagulation disorder.
  • Urinary incontinence caused by reduced sphincter function or severe urge urinary incontinence.
  • Patients with a history of severe cardiovascular disease, including but not limited to:
  • Second/third-degree heart block.
  • Severe ischemic heart disease.
  • Congestive heart failure with New York Heart Association (NYHA) heart function grade ≥ II (mild physical activity limitation; comfortable at rest, but normal activities can cause fatigue, palpitations, or dyspnea).
  • Prostate biopsy within 2 months before enrollment.
  • Unstable angina, myocardial infarction, transient ischemic attack, or cerebrovascular accident in the past 6 months.
  • Patients with previous invasive prostate treatment, such as:
  • Radiofrequency (RF) ablation.
  • Balloon dilation.
  • Microwave therapy.
  • Laser treatment.
  • Electroreception.
  • Prostate urethral stent.
  • Suspension procedures.
  • History of previous rectal surgery (except hemorrhoidectomy) or history of rectal disease that affects the treatment method or efficacy evaluation in this study.
  • Acute urinary and reproductive system infections that are not effectively controlled.
  • Neurogenic bladder or neurological diseases that affect bladder function, sphincter function, or detrusor function, as assessed by the researcher.
  • Bladder stones.
  • Subjects who cannot undergo MRI examination.
  • Subjects who are:
  • Currently participating in clinical trials.
  • Have participated in other drug clinical trials within 3 months.
  • Have participated in other medical device clinical trials within 30 days.
  • Other situations that the researcher believes are unsuitable for participation in the study.

Treatment and study plan

Water Vapor Thermal Ablation

Device

The water vapor thermal ablation system injects thermal energy in the form of water vapor into the hyperplastic prostate tissue in controlled doses. The injected water vapor quickly disperses through the gaps between tissue cells. When water vapor comes into contact with tissue, it cools and condenses immediately. The stored heat energy is released, denaturing the cell membrane, causing cell death and eventually being absorbed or shed by the body and excreted through urination, thus improving the lower urinary tract symptoms (LUTS) caused by benign prostatic hyperplasia (BPH).

Other names: Water Vapor Ablation

cystoscopy

Device

Cystoscopy is a procedure that allows the doctor to examine the lining of patient's bladder and the tube that carries urine out of the body (urethra). A hollow tube (cystoscope) equipped with a lens is inserted into your urethra and slowly advanced into the bladder.

Primary outcomes

  1. IPSS (International Prostate Symptom Score)

    Time frame: • Baseline, pre-intervention • 3 months after the initial intervention

    The IPSS (International Prostate Symptom Score) is an eight-question written screening tool used to screen for, rapidly diagnose, track the symptoms of, and suggest management of the symptoms of benign prostatic hyperplasia (BPH).

    It's minimum value is 0, and maximum value is 35. Lower scores mean a better outcome.

Secondary outcomes

  1. The percentage of Water Vapor Ablation treated subjects who reach ≥50% IPSS improvement compared to baseline

    Time frame: • Baseline, pre-intervention • 1 month after the initial intervention • 3 months after the initial intervention • 6 months after the initial intervention

    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 symptoms of benign prostatic hyperplasia (BPH).

  2. Qmax (Peak Urinary Flow Rate)

    Time frame: • Baseline, pre-intervention • 1 month after the initial intervention • 3 months after the initial intervention • 6 months after the initial intervention

    In the context of Benign Prostatic Hyperplasia (BPH), "Qmax" refers to the maximum urinary flow rate, which is the fastest rate at which urine can be expelled during a urination test, essentially measuring the peak flow of urine and used as a key indicator to assess the severity of urinary obstruction caused by an enlarged prostate.

  3. PVR (Post-void Residual)

    Time frame: • Baseline, pre-intervention • 1 month after the initial intervention • 3 months after the initial intervention • 6 months after the initial intervention

    n the context of BPH (Benign Prostatic Hyperplasia), "PVR" stands for "Post-Void Residual," which refers to the amount of urine left in the bladder after a person urinates, essentially measuring how well the bladder is emptying.

  4. Prostate Volume via MRI (Magnetic Resonance Imaging) measurement

    Time frame: • Baseline, pre-intervention • 1 month after the initial intervention • 3 months after the initial intervention • 6 months after the initial intervention

    MRI, with its advantage of multiplanar imaging and superior soft tissue contrast resolution, can be used in BPH patients to measure the entire prostatic volume.

  5. QoL (Quality of Life)

    Time frame: • Baseline, pre-intervention • 1 month after the initial intervention • 3 months after the initial intervention • 6 months after the initial intervention

    A Quality of Life (QoL) questionnaire for patients with benign prostatic hyperplasia (BPH) can include questions about symptoms and possible adverse effects of treatment.

    It's minimum value is 0, and maximum value is 6. Lower scores mean a better outcome.

  6. BPHII (Benign Prostatic Hyperplasia Impact Index)

    Time frame: • Baseline, pre-intervention • 1 month after the initial intervention • 3 months after the initial intervention • 6 months after the initial intervention

    A "BPHII score" refers to a score on the "Benign Prostatic Hyperplasia Impact Index" questionnaire, which is used to assess the impact of BPH (benign prostatic hyperplasia) symptoms on a man's quality of life; essentially measuring how much his BPH symptoms interfere with his daily activities and overall well-being.

    It's minimum value is 0, and maximum value is 13. Lower scores mean a better outcome.

  7. IIEF-5 (International Index of Erectile Function-5)

    Time frame: • Baseline, pre-intervention • 3 months after the initial intervention • 6 months after the initial intervention

    The International Index of Erectile Function-5 (IIEF-5) is a shortened, five-item questionnaire used to assess the severity of erectile dysfunction (ED) in men, essentially a simplified version of the longer International Index of Erectile Function (IIEF) which covers a wider range of sexual function domains.

    It's minimum value is 1, and maximum value is 25. Higher scores mean a better outcome.

  8. MSHQ-EjD (Male Sexual Health Questionnaire for Ejaculatory Function)

    Time frame: • Baseline, pre-intervention • 3 months after the initial intervention • 6 months after the initial intervention

    The Male Sexual Health Questionnaire for Ejaculatory Function (MSHQ-EjD) is a shortened version of the Male Sexual Health Questionnaire (MSHQ) specifically designed to assess ejaculatory dysfunction (EjD) in men, focusing on key aspects like the ability to ejaculate, the strength of ejaculation, and the amount of semen produced, allowing clinicians to evaluate potential issues related to ejaculation difficulties.

    It's minimum value is 1, and maximum value is 15. Higher scores mean a better outcome.

Other outcomes

  1. Safety evaluations

    Time frame: • 6 months after the initial intervention

    • (Serious) adverse event rate (%) and number of events;
    • (Serious) device-related adverse event rate (%) and number of events;
    • (Serious) device defect rate (%) and number of events.

Study contacts

Contact information is provided by the study sponsor or research team.

Jim Zhang, MD

CONTACT

[email protected]

[email protected]

Sponsors and collaborators

Lead sponsor

Medtecx Co Ltd.

Industry

Registry information

Official study title

A Prospective, Multicenter, Randomized Controlled Clinical Trial to Evaluate the Efficacy and Safety of a Water Vapor Thermal Ablation System for the Treatment of Benign Prostatic Hyperplasia

Important dates

Study start
2024
Primary completion
2025
Study completion
2026
First posted
Dec 10, 2024
Registry last updated
Dec 17, 2024

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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