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

2026年8月27日 更新者: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.

調査の概要

状態

まだ募集していません

条件

介入・治療

詳細な説明

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.

研究の種類

介入

入学 (推定)

110

段階

  • フェーズ 4

参加基準

研究者は、適格基準と呼ばれる特定の説明に適合する人を探します。これらの基準のいくつかの例は、人の一般的な健康状態または以前の治療です。

適格基準

就学可能な年齢

  • 大人
  • 高齢者

健康ボランティアの受け入れ

いいえ

説明

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

研究計画

このセクションでは、研究がどのように設計され、研究が何を測定しているかなど、研究計画の詳細を提供します。

研究はどのように設計されていますか?

デザインの詳細

  • 主な目的:処理
  • 割り当て:ランダム化
  • 介入モデル:並列代入
  • マスキング:なし(オープンラベル)

武器と介入

参加者グループ / アーム
介入・治療
アクティブコンパレータ: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.
アクティブコンパレータ: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

この研究は何を測定していますか?

主要な結果の測定

結果測定
メジャーの説明
時間枠
International Prostate Symptom Score (IPSS) Total Score
時間枠: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).
時間枠: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)

二次結果の測定

結果測定
メジャーの説明
時間枠
Mean change in International Prostate Symptom Score (IPSS) Total Score from baseline at 1, 6, and 12 months
時間枠: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
時間枠: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
時間枠: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
時間枠: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)

協力者と研究者

ここでは、この調査に関係する人々や組織を見つけることができます。

スポンサー

研究記録日

これらの日付は、ClinicalTrials.gov への研究記録と要約結果の提出の進捗状況を追跡します。研究記録と報告された結果は、国立医学図書館 (NLM) によって審査され、公開 Web サイトに掲載される前に、特定の品質管理基準を満たしていることが確認されます。

主要日程の研究

研究開始 (推定)

2026年9月1日

一次修了 (推定)

2028年9月1日

研究の完了 (推定)

2029年9月1日

試験登録日

最初に提出

2026年7月19日

QC基準を満たした最初の提出物

2026年8月27日

最初の投稿 (実際)

2026年9月1日

学習記録の更新

投稿された最後の更新 (実際)

2026年9月1日

QC基準を満たした最後の更新が送信されました

2026年8月27日

最終確認日

2026年8月1日

詳しくは

本研究に関する用語

その他の研究ID番号

  • CLIN-0298

個々の参加者データ (IPD) の計画

個々の参加者データ (IPD) を共有する予定はありますか?

未定

医薬品およびデバイス情報、研究文書

米国FDA規制医薬品の研究

はい

米国FDA規制機器製品の研究

はい

米国で製造され、米国から輸出された製品。

いいえ

この情報は、Web サイト clinicaltrials.gov から変更なしで直接取得したものです。研究の詳細を変更、削除、または更新するリクエストがある場合は、register@clinicaltrials.gov。 までご連絡ください。 clinicaltrials.gov に変更が加えられるとすぐに、ウェブサイトでも自動的に更新されます。