Clinical trial Recruiting at 3 sites Interventional Ages 18 and up

heepSync: synchronized electrical stimulation of breathing muscles for adults on mechanical ventilation

Official title: Clinical Safety and Feasibility Study for Non-CE Marked Medical Device: Evaluation of heepSync, a Novel Algorithm for Transcutaneous Electrical Stimulation of Respiratory Muscles in Mechanically Ventilated Patients.

Run by Tesai Care SL · NCT07363902 · Data updated 2026-11-12

This trial tests whether the heecap heepSync algorithm can safely sync electrical stimulation to breathing muscles in adults on mechanical ventilation.

Quick facts

Study typeInterventional
Ages18 Years and up
SexAll
Enrollment20 (estimated)
SponsorTesai Care SL
Industry-sponsored
Locations3 sites (Barcelona, Barcelona and 2 other locations)
StatusRecruiting
StartedDecember 1, 2024
Main results expectedOctober 2026
Study endsNovember 2026
Registry record updatedSeptember 21, 2026
Trial IDNCT07363902 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Adults in the ICU with acute hypoxemic respiratory failure who have been on controlled or pressure-support mechanical ventilation for ≥24 hours, are clinically stable (SpO2 > 90% on FiO2 ≤ 0.50, PEEP ≤ 10 cm H2O, temperature 35.5–38.5°C), and are not receiving vasoactive drugs or neuromuscular blockers and have no exclusionary conditions such as pacemaker or neuromuscular disease.

Probably not a fit

Patients with pacemakers or a history of arrhythmia, neuromuscular disease, ongoing neuromuscular blockade, hemodynamic instability, high oxygen/PEEP requirements, or physical barriers to electrode placement are unlikely to be eligible or to benefit from this device.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

Heecap's heepSync algorithm delivers transcutaneous electrical stimulation to inspiratory and expiratory respiratory muscles and attempts to synchronize that stimulation with the patient's own breathing while they remain on mechanical ventilation. The trial enrolls clinically stable adult ICU patients with acute hypoxemic respiratory failure who have been on controlled or pressure-support ventilation for at least 24 hours. Investigators will apply the device at the bedside and monitor synchronization performance, physiologic responses, and safety outcomes including arrhythmia, hemodynamic changes, and tolerance. The primary focus is on preliminary safety and the algorithm's ability to detect and time stimulation to patient breaths.

Why it matters

Potential benefit: If successful, this approach could help preserve respiratory muscle strength and shorten the time patients need mechanical ventilation.

How similar studies have gone: Transcutaneous synchronized stimulation of both inspiratory and expiratory muscles in ventilated patients is largely novel; while some invasive diaphragm or phrenic stimulation approaches have limited supporting data, evidence for this noninvasive algorithmic method is preliminary.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

Patient population 1

* Adult patients with acute hypoxemic respiratory failure who have been under controlled mechanical ventilation for at least 24 hours prior to enrollment.
* Clinically stable: oxygen saturation \> 90% with a fractional inspired oxygen ≤ 0.50, eternal PEEP ≤ 10 cm H2O, temperature ranging from 35.5 to 38.5 ºC, no intravenous administration of vasoactive agents.

Patient population 2

* Adult patients with acute hypoxemic respiratory failure who have been under pressure support mechanical ventilation for at least 24 hours prior to enrollment.
* Clinically stable: oxygen saturation \> 90% with a fractional inspired oxygen ≤ 0.50, eternal PEEP ≤ 10 cm H2O, temperature ranging from 35.5 to 38.5 ºC, no intravenous administration of vasoactive agents.

Exclusion Criteria:

* Patients treated with neuromuscular blocking agents
* Patients with neuromuscular disease
* Patients with a pacemaker or past history of arrhythmia
* Patients with physical obstacles that prevent thoracic or abdominal electrostimulation (e.g., abdominal trauma, recent abdominal surgery, polytrauma, broken or irritated skin)
* BMI \> 40 kg/m2
* Hemodynamically unstable (noradrenaline \>0.1 microgram/kg/min)
* Pregnancy
* Patients under the age of 18
* The formalized ethical decision to withhold or withdraw life support
* Patient under guardianship
* Patients deprived of liberties
* Patients already enrolled in the present study, in a previous episode of acute respiratory failure.
* The patient who does not consent.

Where it's running

  • Hospital Universitari de Vall d'Hebrón
    Barcelona, Barcelona, Spain
    Recruiting
  • Hospital Universitari de Bellvitge
    L'Hospitalet de Llobregat, Barcelona, Spain
    Recruiting
  • Hospital Universitari Parc Tauli
    Sabadell, Barcelona, Spain
    Recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.