A Single-center, Single-arm Study to Evaluate the Safety and Efficacy of Ultra-minimally Invasive Prostate Dilation in Treating Patients With Significant Obstructive Symptoms Caused by Benign Prostatic Hyperplasia (UMPD-BPH)
This single-center, single-arm, prospective clinical study aims to preliminarily evaluate the safety and effectiveness of ultra-minimally invasive prostatic dilation using a prostate dilation catheter under real-time transrectal ultrasound (TRUS) guidance in male patients with significant bladder outlet obstruction secondary to benign prostatic hyperplasia (BPH).
A total of 5 eligible male subjects aged 40 to 80 years with symptomatic BPH, International Prostate Symptom Score (IPSS) ≥13, maximum urinary flow rate (Qmax) of 5-10 mL/s, prostate volume <30 mL measured by TRUS, and evident bladder outlet obstruction will be enrolled. All subjects will undergo prostatic balloon dilation with the study device under real-time TRUS guidance. Follow-up assessments will be conducted at 1, 3, and 6 months after treatment.
The primary effectiveness endpoint is the change in IPSS from baseline at 1, 3, and 6 months. The primary safety endpoints include bladder neck contracture, retrograde ejaculation, device-related severe urinary retention persisting for more than 14 days after healing, new-onset stress urinary incontinence, device-related bleeding requiring transfusion, and device-related urethral or prostatic capsular rupture requiring surgical intervention.
Secondary endpoints include responder rates based on different thresholds of IPSS improvement (≥30%, ≥40%, and ≥50%), changes in Qmax, and changes in visual analogue scale (VAS) scores. Exploratory endpoints include changes in postvoid residual urine volume (PVR) and sexual function assessed by the International Index of Erectile Function (IIEF-5) and the Male Sexual Health Questionnaire-Ejaculatory Dysfunction (MSHQ-EjD).
This exploratory study is intended to provide preliminary clinical evidence supporting the safety and potential clinical benefit of TRUS-guided ultra-minimally invasive prostatic dilation for BPH-related obstruction and to inform future larger-scale clinical studies.
Studieoversigt
Status
Status
Betingelser
Betingelser
Intervention / Behandling
Intervention / Behandling
Detaljeret beskrivelse
This is a single-center, single-arm, prospective exploratory clinical study designed to preliminarily evaluate the safety and effectiveness of ultra-minimally invasive prostatic dilation using a dedicated prostate dilation catheter under real-time transrectal ultrasound (TRUS) guidance in patients with benign prostatic hyperplasia (BPH) associated with significant bladder outlet obstruction.
A total of 5 eligible male participants will be enrolled. Eligible subjects are 40 to 80 years of age, have moderate to severe lower urinary tract symptoms, an International Prostate Symptom Score (IPSS) of at least 13, a maximum urinary flow rate (Qmax) between 5 and 10 mL/s, and a prostate volume less than 30 mL as measured by TRUS. All participants must have clinically confirmed BPH with significant bladder outlet obstruction and preserved sexual function. Key exclusion criteria include suspected or confirmed malignancy, severe urinary tract infection, bleeding tendency, neurogenic bladder, and other conditions considered unsuitable for the procedure.
After providing written informed consent, each participant will undergo ultra-minimally invasive prostatic dilation with the study device under real-time TRUS guidance. The procedure is intended to be performed in a minimally invasive setting without the need for general anesthesia. Follow-up evaluations will be conducted at 1, 3, and 6 months after treatment.
Efficacy assessments will focus on changes from baseline in IPSS at 1, 3, and 6 months after the procedure. Safety assessments will include the occurrence of adverse events such as bladder neck contracture, retrograde ejaculation, device-related prolonged urinary retention lasting more than 14 days after healing, stress urinary incontinence, bleeding requiring transfusion, and urethral or prostatic capsular rupture requiring surgical intervention. Secondary outcomes include responder rates based on different thresholds of IPSS improvement, changes in Qmax and visual analogue scale (VAS) scores, and exploratory changes in postvoid residual urine volume (PVR) and sexual function parameters, including the International Index of Erectile Function-5 (IIEF-5) and the Male Sexual Health Questionnaire-Ejaculatory Dysfunction (MSHQ-EjD).
This study is intended to generate preliminary clinical evidence regarding the safety and potential therapeutic benefit of TRUS-guided ultra-minimally invasive prostatic dilation for the treatment of BPH-related bladder outlet obstruction, and to support the design of future larger-scale clinical investigations.
Undersøgelsestype
Undersøgelsestype
Tilmelding (Anslået)
Tilmelding
Fase
Fase
- Ikke anvendelig
Kontakter og lokationer
Studiekontakt
Studiekontakt
- Navn: Qing Yuan, MD
- Telefonnummer: 19917508192
- E-mail: rentangl@163.com
Studiesteder
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Beijing, Kina, 100000
- Rekruttering
- Qing Yuan
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Kontakt:
- Qing Yuan
- Telefonnummer: 19917508192
- E-mail: rentangl@163.com
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Kontakt:
- Rentang Li
- Telefonnummer: 19917508192
- E-mail: rentangl@163.com
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Ledende efterforsker:
- Qing Yuan
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Deltagelseskriterier
Berettigelseskriterier
Berettigelseskriterier
Aldre berettiget til at studere
- Voksen
- Ældre voksen
Tager imod sunde frivillige
Beskrivelse
Inclusion Criteria:
- Male subjects aged 40 to 80 years with symptomatic benign prostatic hyperplasia (BPH) and obvious bladder outlet obstruction.
- Subjects with normal sexual life and a sexual partner, and with intact sexual function.
- International Prostate Symptom Score (IPSS) ≥ 13.
- Maximum urinary flow rate (Qmax) between 5 and 10 mL/s, with a minimum voided volume ≥ 150 mL.
- Prostate volume measured by transrectal ultrasound (TRUS) < 30 mL. Prostate volume is calculated as length × width × height × 0.52.
- Subjects who, in the investigator's opinion, are able to complete the study protocol.
Exclusion Criteria:
- Subjects who are unable or unwilling to sign the informed consent form (ICF) and/or comply with all follow-up requirements.
- Subjects who are unwilling to abstain from sexual activity or use protective sexual behavior within 90 days after treatment.
- Prostate-specific antigen (PSA) ≥ 10 ng/mL, unless prostate cancer has been excluded by biopsy.
- Confirmed or suspected prostate or bladder malignancy.
- Use of antiplatelet drugs, such as clopidogrel or aspirin, within 10 days before surgery, or planned use within 5 days after surgery.
- Use of medications within 3 months before surgery that, in the investigator's opinion, may affect sexual function.
- Presence of neurogenic bladder or detrusor underactivity affecting bladder/sphincter function.
- Patients with BPH complicated by acute urinary tract infection, acute prostatitis, or bacterial prostatitis.
Studieplan
Hvordan er undersøgelsen tilrettelagt?
Design detaljer
- Primært formål: Behandling
- Tildeling: N/A
- Interventionel model: Enkelt gruppeopgave
- Maskning: Ingen (Åben etiket)
Antal våben
Våben og indgreb
Deltagergruppe / ArmDeltagergruppe / Arm |
Intervention / BehandlingIntervention / Behandling |
|---|---|
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Eksperimentel: TRUS-Guided Prostatic Dilation Group
Participants in this arm will receive ultra-minimally invasive prostatic dilation using a dedicated prostate dilation catheter under real-time transrectal ultrasound guidance for the treatment of benign prostatic hyperplasia-associated bladder outlet obstruction.
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The intervention consists of ultra-minimally invasive dilation of the prostatic urethra using a dedicated prostate dilation catheter under real-time transrectal ultrasound guidance.
The treatment is designed to relieve bladder outlet obstruction caused by benign prostatic hyperplasia while preserving urinary and sexual function.
Andre navne:
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Hvad måler undersøgelsen?
Primære resultatmål
Primære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
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Change in International Prostate Symptom Score from baseline to 3 months after treatment
Tidsramme: Baseline and 3 months after treatment
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The International Prostate Symptom Score, or IPSS, will be used to evaluate lower urinary tract symptoms associated with benign prostatic hyperplasia.
The score ranges from 0 to 35, with higher scores indicating more severe symptoms.
The change in IPSS from baseline to 3 months after treatment will be assessed.
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Baseline and 3 months after treatment
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Sekundære resultatmål
Sekundære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
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Change in maximum urinary flow rate from baseline to 3 months after treatment
Tidsramme: Baseline and 3 months after treatment
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Maximum urinary flow rate, or Qmax, will be measured by uroflowmetry.
The change in Qmax from baseline to 3 months after treatment will be assessed.
A higher Qmax indicates improved urinary flow.
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Baseline and 3 months after treatment
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Incidence of treatment-related adverse events
Tidsramme: From treatment to 3 months after treatment
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The incidence, severity, and relationship to the study procedure or device of adverse events will be recorded throughout the study.
Adverse events may include hematuria, urinary tract infection, urinary retention, pain, dysuria, urethral injury, or other procedure-related complications.
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From treatment to 3 months after treatment
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Andre resultatmål
Andre resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
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Change in quality of life score from baseline to 3 months after treatment
Tidsramme: Baseline and 3 months after treatment
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The quality of life score related to urinary symptoms will be assessed using the quality of life question of the International Prostate Symptom Score.
The score ranges from 0 to 6, with higher scores indicating worse quality of life.
The change from baseline to 3 months after treatment will be evaluated.
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Baseline and 3 months after treatment
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Samarbejdspartnere og efterforskere
Sponsor
Sponsor
Efterforskere
Efterforskere
- Ledende efterforsker: Qing Yuan, Chinese PLA General Hospital
Datoer for undersøgelser
Studer store datoer
Studiestart (Faktiske)
Studiestart
Primær færdiggørelse (Anslået)
Primær færdiggørelse
Studieafslutning (Anslået)
Studieafslutning
Datoer for studieregistrering
Først indsendt
Først indsendt
Først indsendt, der opfyldte QC-kriterier
Først indsendt, der opfyldte QC-kriterier
Først opslået (Faktiske)
Først opslået
Opdateringer af undersøgelsesjournaler
Sidste opdatering sendt (Faktiske)
Sidste opdatering sendt
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidst verificeret
Sidst verificeret
Mere information
Begreber relateret til denne undersøgelse
Nøgleord
Yderligere relevante MeSH-vilkår
Andre undersøgelses-id-numre
Andre undersøgelses-id-numre
- S2025-982-01
Plan for individuelle deltagerdata (IPD)
Planlægger du at dele individuelle deltagerdata (IPD)?
IPD-planbeskrivelse
Lægemiddel- og udstyrsoplysninger, undersøgelsesdokumenter
Studerer et amerikansk FDA-reguleret lægemiddelprodukt
Studerer et amerikansk FDA-reguleret enhedsprodukt
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