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Prospective Post Market Clinical Trial for the Zenflow Spring System - A Minimally Invasive Treatment for LUTS Associated With BPH.

27 agosto 2026 aggiornato da: Zenflow, Inc.

Prospective Post Market Clinical Trial for the Zenflow Spring System - A Minimally Invasive Treatment for LUTS Associated With BPH

This is a prospective, randomized, open-label, parallel-group post-market clinical trial (PMCT). The overall objective of this PMCT is to compare the effectiveness, durability, and patient-centered outcomes of the Zenflow Spring System versus Tamsulosin in men who are not on active therapy with moderate to severe LUTS/BPH. Patients randomized to the Tamsulosin therapy arm will be allowed to crossover to receive treatment with the Zenflow Spring System after 1) their 3-month follow-up assessments are completed, 2) the patient's symptoms are confirmed to continue to warrant treatment; and 3) the patient continues to meet the study enrollment criteria.

Panoramica dello studio

Stato

Non ancora reclutamento

Condizioni

Intervento / Trattamento

Descrizione dettagliata

The purpose of this post-market clinical trial (PMCT) is to compare the Zenflow Spring System with Tamsulosin in men with moderate to severe BPH symptoms who are not currently receiving treatment.

The study will look at how well each treatment works, how long the results last, how quickly patients return to normal activities, how satisfied they are with their treatment, and any side effects. Patients will be followed at 1, 3, 6, and 12 months. The study will also track any implant removals or additional procedures, as well as any changes to or stopping of Tamsulosin.

Patients who qualify for the study will be randomly assigned, with an equal chance, to receive either the Zenflow Spring System or Tamsulosin.

Patients randomized to the Tamsulosin therapy arm will be allowed to crossover to receive treatment with the Zenflow Spring System after 1) their 3-month follow-up assessments are completed, 2) the patient's symptoms are confirmed to continue to warrant treatment; and 3) the patient continues to meet the study enrollment criteria. No crossover will be permitted beyond 30 days after completion of the 12-month follow-up. Patients who elect crossover and have a successful placement of the Spring Implant will be followed for 1 additional month and then will exit the study.

Tipo di studio

Interventistico

Iscrizione (Stimato)

110

Fase

  • Fase 4

Criteri di partecipazione

I ricercatori cercano persone che corrispondano a una certa descrizione, chiamata criteri di ammissibilità. Alcuni esempi di questi criteri sono le condizioni generali di salute di una persona o trattamenti precedenti.

Criteri di ammissibilità

Età idonea allo studio

  • Adulto
  • Adulto più anziano

Accetta volontari sani

No

Descrizione

Inclusion Criteria:

The Spring® Implant and Delivery System is indicated for the treatment of obstructive lower urinary tract symptoms secondary to benign prostatic hyperplasia (BPH) in men with prostatic urethral lengths between 25mm and 45mm and prostate sizes between 25cc and 80cc.

In addition to the above labeling requirements, patients must also meet all the following criteria to be eligible for enrollment in this study:

  1. Moderate to severe LUTS, defined as an International Prostate Symptom Score (IPSS ≥ 8)
  2. Not actively taking any medication indicated for BPH, defined as current use of:

    1. Alpha-adrenergic antagonists (Alpha Blockers) within 2 weeks of baseline IPSS assessment
    2. 5-alpha reductase inhibitors (5ARI) within 6 months of baseline IPSS assessment
    3. PDE5 daily use (on demand use is permitted)
  3. Ability to provide informed consent and comply with study procedures and follow-up schedule

Exclusion Criteria:

  1. Known, previous adverse reaction to use of alpha-adrenergic antagonists (e.g., Tamsulosin)
  2. Neurologic conditions affecting bladder function, including but not limited to:

    1. Multiple sclerosis
    2. Parkinson's disease
    3. Neurogenic bladder or other conditions causing non-obstructive voiding dysfunction

Piano di studio

Questa sezione fornisce i dettagli del piano di studio, compreso il modo in cui lo studio è progettato e ciò che lo studio sta misurando.

Come è strutturato lo studio?

Dettagli di progettazione

  • Scopo principale: Trattamento
  • Assegnazione: Randomizzato
  • Modello interventistico: Assegnazione parallela
  • Mascheramento: Nessuno (etichetta aperta)

Armi e interventi

Gruppo di partecipanti / Arm
Intervento / Trattamento
Comparatore attivo: Zenflow Arm: Zenflow Spring System Treatment
Zenflow Arm: Patients randomized to the Zenflow Spring System arm will undergo the procedure according to manufacturer specifications and standardized procedural protocols.
The Zenflow Spring Implant is designed to be a permanent implant but can be repositioned or removed by the physician.
Comparatore attivo: Tamsulosin Treatment
Medical Therapy Arm: Patients randomized to the medical therapy arm will receive Tamsulosin 0.4 mg once daily. Subjects will be encouraged to remain on this medical therapy through at least 3 months of treatment, unless significant adverse health reaction occurs.
Tamsulosin is a prescription medicine that relaxes the muscles around the prostate and bladder to help men with an enlarged prostate (BPH) urinate more easily

Cosa sta misurando lo studio?

Misure di risultato primarie

Misura del risultato
Misura Descrizione
Lasso di tempo
International Prostate Symptom Score (IPSS) Total Score
Lasso di tempo: Baseline (Day 1) to 3 months
Mean change in IPSS Total Score from baseline at 3 months. This is a 7-question patient questionnaire used to measure the severity of lower urinary tract symptoms associated with BPH. Each of the 7 symptom questions is scored from 0 to 5, giving a total possible score of 0-35. Lower scores are better.
Baseline (Day 1) to 3 months
Observed rate of device-related or Tamsulosin-related serious adverse events (SAEs).
Lasso di tempo: Baseline through study completion, an average of 1 year (Duration of study)
Observed rate of device-related or Tamsulosin-related serious adverse events (SAEs).
Baseline through study completion, an average of 1 year (Duration of study)

Misure di risultato secondarie

Misura del risultato
Misura Descrizione
Lasso di tempo
Mean change in International Prostate Symptom Score (IPSS) Total Score from baseline at 1, 6, and 12 months
Lasso di tempo: Baseline at 1, 6, and 12 months
Mean change in International Prostate Symptom Score (IPSS) Total Score from baseline at 1, 6, and 12 months. This is a 7-question questionnaire used to measure the severity of lower urinary tract symptoms associated with BPH. Each of the 7 symptom questions is scored from 0 to 5, giving a total possible score of 0-35. Lower scores are better
Baseline at 1, 6, and 12 months
Mean change in International Prostate Symptom Score (IPSS) Quality of Life (QoL) from baseline 1, 3, 6 and 12 months
Lasso di tempo: Baseline 1, 3, 6 and 12 months
Mean change in International Prostate Symptom Score (IPSS) Quality of Life (QoL) from baseline 1, 3, 6 and 12 months. This separate Quality of Life (QoL) question, scored 0-6, is asking how the patient would feel if they had to live with their current urinary condition for the rest of their life. The QoL score is reported separately and is not included in the 0-35 IPSS total
Baseline 1, 3, 6 and 12 months
Adherence to assigned treatment (Spring Implant arm or Medical Therapy Arm) and reasons for any discontinuations
Lasso di tempo: Baseline through study completion, an average of 1 year (Study duration)
In the Spring Implant arm, the patient will be asked if they remain implanted with the Spring Implant and if since last visit, if patient initiated any concomitant BPH medication use (for > 2 weeks). In the Medical Therapy Arm the patient will be asked since last visit, to confirm if they have been consistently taking Tamsulosin at the required dose.
Baseline through study completion, an average of 1 year (Study duration)
The observed rates of device related AEs or Tamsulosin-related adverse events
Lasso di tempo: Baseline through study completion, an average of 1 year (Duration of study)
The observed rates of device related AEs or Tamsulosin-related adverse events
Baseline through study completion, an average of 1 year (Duration of study)

Collaboratori e investigatori

Qui è dove troverai le persone e le organizzazioni coinvolte in questo studio.

Sponsor

Studiare le date dei record

Queste date tengono traccia dell'avanzamento della registrazione dello studio e dell'invio dei risultati di sintesi a ClinicalTrials.gov. I record degli studi e i risultati riportati vengono esaminati dalla National Library of Medicine (NLM) per assicurarsi che soddisfino specifici standard di controllo della qualità prima di essere pubblicati sul sito Web pubblico.

Studia le date principali

Inizio studio (Stimato)

1 settembre 2026

Completamento primario (Stimato)

1 settembre 2028

Completamento dello studio (Stimato)

1 settembre 2029

Date di iscrizione allo studio

Primo inviato

19 luglio 2026

Primo inviato che soddisfa i criteri di controllo qualità

27 agosto 2026

Primo Inserito (Effettivo)

1 settembre 2026

Aggiornamenti dei record di studio

Ultimo aggiornamento pubblicato (Effettivo)

1 settembre 2026

Ultimo aggiornamento inviato che soddisfa i criteri QC

27 agosto 2026

Ultimo verificato

1 agosto 2026

Maggiori informazioni

Termini relativi a questo studio

Altri numeri di identificazione dello studio

  • CLIN-0298

Piano per i dati dei singoli partecipanti (IPD)

Hai intenzione di condividere i dati dei singoli partecipanti (IPD)?

INDECISO

Informazioni su farmaci e dispositivi, documenti di studio

Studia un prodotto farmaceutico regolamentato dalla FDA degli Stati Uniti

Sì

Studia un dispositivo regolamentato dalla FDA degli Stati Uniti

Sì

prodotto fabbricato ed esportato dagli Stati Uniti

No

Queste informazioni sono state recuperate direttamente dal sito web clinicaltrials.gov senza alcuna modifica. In caso di richieste di modifica, rimozione o aggiornamento dei dettagli dello studio, contattare register@clinicaltrials.gov. Non appena verrà implementata una modifica su clinicaltrials.gov, questa verrà aggiornata automaticamente anche sul nostro sito web .