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Diagnostic Performance of a Flexible Penile Monitoring System for ED

8 augusti 2026 uppdaterad av: Bin Xu

Diagnostic Performance Evaluation and Clinical Translation Research of a New Intelligent Flexible Penile Monitoring System for Erectile Dysfunction

This study aims to evaluate the diagnostic performance of a novel intelligent flexible penile monitoring system for erectile dysfunction (ED). The current gold standard, RigiScan Plus, often causes discomfort and disrupts sleep due to its mechanical rings, leading to potential "first-night effect" biases. This research utilizes a prospective crossover design to compare the accuracy of the new flexible system with RigiScan in measuring peak rigidity and tumescence. A total of 60 participants (30 ED patients and 30 healthy volunteers) will be enrolled. The study expects to confirm that the flexible system provides highly accurate diagnostic data while significantly improving patient comfort and maintaining natural sleep structures.

Studieöversikt

Status

Har inte rekryterat ännu

Betingelser

Intervention / Behandling

Detaljerad beskrivning

Nocturnal Penile Tumescence (NPT) monitoring is essential for differentiating psychogenic from organic ED. However, traditional mechanical devices pose physical loads that may trigger arousals during REM sleep. This study introduces a flexible sensing technology with an ultra-thin (<0.8mm) layer to achieve "unfelt" monitoring.

The primary objective is to assess the consistency of physical parameters (peak rigidity % and tumescence) between the flexible system and RigiScan Plus. Participants will be randomized 1:1 into two sequences for a two-night crossover monitoring process with a 3-7 day washout period. Secondary objectives include evaluating clinical diagnosis agreement (Kappa), sleep quality metrics (Arousal frequency), and patient comfort scores (VAS). Additionally, the study will explore the correlation between "deformation heatmaps" and hemodynamic indicators from Penile Color Doppler Ultrasound (CDDU) to improve fine-grained ED subtyping.

Studietyp

Observationell

Inskrivning (Beräknad)

60

Kontakter och platser

Det här avsnittet innehåller kontaktuppgifter för dem som genomför studien och information om var denna studie genomförs.

Studiekontakt

Studieorter

  • Kina
    • Jiangsu
      • Nanjing, Jiangsu, Kina, 210009
        • Zhongda Hospital Southeast University
        • Kontakt:

Deltagandekriterier

Forskare letar efter personer som passar en viss beskrivning, så kallade behörighetskriterier. Några exempel på dessa kriterier är en persons allmänna hälsotillstånd eller tidigare behandlingar.

Urvalskriterier

Åldrar som är berättigade till studier

  • Vuxen
  • Äldre vuxen

Tar emot friska volontärer

Ja

Testmetod

Icke-sannolikhetsprov

Studera befolkning

The study population consists of adult males (18-70 years old) visiting the Urology Outpatient Clinic of Zhongda Hospital with complaints of erectile dysfunction, as well as healthy male volunteers recruited from the community.

Beskrivning

Inclusion Criteria:

  1. Males aged 18-70 years with good communication and compliance.
  2. Able to follow clinical Standard Operating Procedures (SOPs) and complete two-stage nocturnal monitoring and clinic-induced tests.
  3. Fully informed about the study and signed the informed consent form.
  4. For ED Group: Clinically diagnosed with erectile dysfunction with an IIEF-5 score < 21.
  5. For Healthy Group: Normal erectile function, no history of related physiological diseases or sexual psychological disorders, with an IIEF-5 score ≥ 21.

Exclusion Criteria:

  1. Systemic diseases: Severe cardiovascular disease (e.g., recent myocardial infarction, unstable angina), uncontrolled severe diabetes, or severe obstructive sleep apnea syndrome.
  2. Local anatomical factors: Severe penile malformation, spinal cord injury, or organic structural damage caused by pelvic fracture; or major surgery within the last six months.
  3. Skin and allergy factors: Active infection or eczema in the penile area, or known allergy to flexible materials (medical-grade silicone/adhesives).
  4. Mental and psychological factors: Untreated or unstable severe depression, anxiety, or other mental disorders.
  5. Medication interference: Current use of PDE5 inhibitors, androgens, anti-androgens, or drugs that significantly interfere with REM sleep structure.
  6. Other factors: Currently participating in other interventional clinical trials, or judged by researchers to have poor compliance.

Studieplan

Det här avsnittet ger detaljer om studieplanen, inklusive hur studien är utformad och vad studien mäter.

Hur är studien utformad?

Designdetaljer

Kohorter och interventioner

Grupp / Kohort
Intervention / Behandling
ED Patient Group
Males aged 18-70 years diagnosed with erectile dysfunction (ED) for more than 6 months, with an IIEF-5 score of less than 21.
Enhet: Intelligent Flexible Penile Monitoring System
A novel, ultra-thin (<0.8mm) flexible sensing system used for prospective monitoring of penile rigidity and tumescence during sleep.
Enhet: RigiScan Plus
RigiScan Plus
Healthy Volunteer Group
Healthy male volunteers aged 18-70 years with normal erectile function and an IIEF-5 score of 21 or greater.
Enhet: Intelligent Flexible Penile Monitoring System
A novel, ultra-thin (<0.8mm) flexible sensing system used for prospective monitoring of penile rigidity and tumescence during sleep.
Enhet: RigiScan Plus
RigiScan Plus

Vad mäter studien?

Primära resultatmått

Resultatmått
Åtgärdsbeskrivning
Tidsram
Measurement Accuracy of Peak Rigidity
Tidsram: Day 1 and Day 8
Mean bias and 95% limits of agreement for peak rigidity (%) between the novel flexible system and RigiScan Plus.
Day 1 and Day 8
Measurement Accuracy of Maximum Girth Expansion
Tidsram: Day 1 and Day 8
Mean bias and 95% limits of agreement for maximum girth expansion (cm) between the novel flexible system and RigiScan Plus.
Day 1 and Day 8

Sekundära resultatmått

Resultatmått
Åtgärdsbeskrivning
Tidsram
Clinical Diagnosis Agreement Rate
Tidsram: Day 1 and Day 8
The degree of agreement in diagnostic conclusions (normal, psychogenic, or organic ED) between the two systems, evaluated using Cohen's Kappa coefficient.
Day 1 and Day 8
Sleep Efficiency
Tidsram: Day 1 and Day 8
Sleep efficiency, defined as the percentage of total sleep time spent asleep out of the total time spent in bed (%), collected by a medical-grade sleep recorder.
Day 1 and Day 8
REM Sleep Percentage
Tidsram: Day 1 and Day 8
Percentage of total sleep time spent in the Rapid Eye Movement (REM) sleep stage (%), measured by a medical-grade sleep recorder.
Day 1 and Day 8
Unintended Arousal Frequency
Tidsram: Day 1 and Day 8
Frequency of unintended arousals (number of events per hour) during sleep, measured by a medical-grade sleep recorder.
Day 1 and Day 8
Subjective Sleep Perception Score (PSQI)
Tidsram: Day 2 and Day 8
Participant subjective sleep perception evaluated using the Pittsburgh Sleep Quality Index (PSQI). The score ranges from 0 to 21, where higher scores indicate worse sleep quality.
Day 2 and Day 8
Subjective Wearing Comfort Score
Tidsram: Day 2 and Day 8
Participant subjective wearing comfort evaluated using the Visual Analogue Scale (VAS). The scale ranges from 0 (extreme discomfort) to 10 (maximum comfort), where higher scores indicate better comfort
Day 2 and Day 8
Participant Scheme Preference
Tidsram: Day 8
Number of participants who express a final preference for the flexible monitoring system versus RigiScan Plus.
Day 8
Response Latency During AVSS
Tidsram: Day 1
The response latency, defined as the time delay in seconds from the onset of Audiovisual Sexual Stimulation (AVSS) to a penile rigidity increase of more than 10%.
Day 1
Congestion Initiation Slope During AVSS
Tidsram: Day 1
Congestion initiation slope (rigidity change rate, % per second) reflected by deformation heatmaps during the Audiovisual Sexual Stimulation (AVSS) test.
Day 1
Correlation with Vascular Subtyping Characteristics
Tidsram: Within 1 week after monitoring.
Correlation analysis between morphology feature vectors from deformation heatmaps and hemodynamic parameters measured by Penile Color Doppler Ultrasound (CDDU).
Within 1 week after monitoring.

Samarbetspartners och utredare

Det är här du hittar personer och organisationer som är involverade i denna studie.

Sponsor

Bin Xu

Utredare

  • Studiestol: Bin Xu, Zhongda hospital

Studieavstämningsdatum

Dessa datum spårar framstegen för inlämningar av studieposter och sammanfattande resultat till ClinicalTrials.gov. Studieposter och rapporterade resultat granskas av National Library of Medicine (NLM) för att säkerställa att de uppfyller specifika kvalitetskontrollstandarder innan de publiceras på den offentliga webbplatsen.

Studera stora datum

Studiestart (Beräknad)

1 augusti 2026

Primärt slutförande (Beräknad)

1 augusti 2027

Avslutad studie (Beräknad)

1 februari 2028

Studieregistreringsdatum

Först inskickad

28 juli 2026

Först inskickad som uppfyllde QC-kriterierna

8 augusti 2026

Första postat (Faktisk)

13 augusti 2026

Uppdateringar av studier

Senaste uppdatering publicerad (Faktisk)

13 augusti 2026

Senaste inskickade uppdateringen som uppfyllde QC-kriterierna

8 augusti 2026

Senast verifierad

1 juli 2026

Mer information

Termer relaterade till denna studie

Nyckelord

Ytterligare relevanta MeSH-villkor

Andra studie-ID-nummer

  • 2026ZDSYLL244-P01

Plan för individuella deltagardata (IPD)

Planerar du att dela individuella deltagardata (IPD)?

NEJ

Läkemedels- och apparatinformation, studiedokument

Studerar en amerikansk FDA-reglerad läkemedelsprodukt

Nej

Studerar en amerikansk FDA-reglerad produktprodukt

Nej

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