Monitoring the effectiveness and safety of the Occlutech mVSD device for heart defects

A Multicenter, International, Follow-up Study to Monitor the Efficacy and Safety of the Occlutech® Muscular Ventricular Septal Defect (mVSD) Occluder in Patients With Muscular Ventricular Septal Defects

Observational Occlutech International AB · NCT05329350

This study is testing whether the Occlutech mVSD device can safely and effectively close heart defects in patients who are not good candidates for surgery.

Quick facts

Study typeObservational
Enrollment50 (estimated)
Ages3 Months to 80 Years
SexAll
SponsorOcclutech International AB Industry-sponsored
Locations5 sites (Dublin and 4 other locations)
Trial IDNCT05329350 on ClinicalTrials.gov

What this trial studies

This observational study aims to evaluate the efficacy and safety of the Occlutech® mVSD device, which is used for the transcatheter closure of muscular ventricular septal defects in patients at high risk for surgical intervention. The study will involve a multicenter, international follow-up registry that will monitor patients over a period of one year after the device implantation. Efficacy will be assessed through various clinical evaluations, including vital signs, laboratory tests, ECGs, and echocardiography at multiple time points post-procedure. The registry will enroll up to 100 patients or remain open for two years, whichever comes first.

Who should consider this trial

Good fit: Ideal candidates for this study are patients with muscular ventricular septal defects who are at high risk for surgical intervention.

Not a fit: Patients with contraindications such as an aortic rim of less than 2 mm or those weighing less than 5.0 kg may not benefit from this study.

Why it matters

Potential benefit: If successful, this study could provide a less invasive treatment option for patients with muscular ventricular septal defects, potentially improving recovery times and outcomes.

How similar studies have performed: Other studies have shown success with similar transcatheter closure approaches, indicating a promising avenue for treatment.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria

* A participant will be eligible for study participation if he/she meets the indication and area of application as laid down in the IFU. The Occlutech mVSD is indicated for percutaneous occlusion of hemodynamically or clinically significant muscular ventricular septal defects.
* Any age
* Male or female.
* Patients understand the nature of the study and provide their informed consent to participation.
* Patients willing and able to attend the follow-up visits and procedures foreseen by study CIP.

Contraindication

* Hemodynamically relevant VSD shunt
* Congestive heart insufficiency
* Recurrent respiratory infections
* Failure to thrive.
* Significant left ventricle (LV) enlargement
* Significant left atrium (LA) enlargement
* Other clinical indication

Exclusion Criteria

The device is contraindicated for participants known to have any of the following:

⦁Active bacterial infections

* Active infection at the time of implantation
* Allergy to antiplatelet or anticoagulant therapy
* Allergy to nickel and/or titanium and/or nickel/titanium-based materials
* Any type of serious infection 1 month before the procedure
* The aortic rim of less than 2 mm
* Demonstrated intracardiac thrombi on echocardiography
* Malignancy where life expectancy is less than 3 years
* mVSD diameter \> 20 mm
* Perimembranous VSD

Post-MI VSD

* Recent myocardial infarction or a surgical bypass operation in the last 30 days
* Sepsis (local or generalized)
* Septal thickness \> 7 mm in the area of the Occluder placement

Where this trial is running

Dublin and 4 other locations

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Muscular Ventricular Septal DefectmVSD OccludermVSDOcclutechOcclutech mVSD OccluderMuscular ventricular septal defect closureTranscatheter closurePercutaneous occlusion
Last reviewed 2026-06-13 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.