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Active, Not Recruiting

NCT Number: NCT02536118

Micra Transcatheter Pacing System Post-Approval Registry

Medtronic is sponsoring the Micra Registry to further confirm safety and effectiveness of the Micra Transcatheter Pacing System (Micra system) when used as intended, in "real-world" clinical practice, following commercial release.

The Micra Registry is conducted within Medtronic's Product Surveillance Registry.

Active, Not Recruiting

This study is active but is not currently recruiting participants.

Key information

Sex eligibility

All sexes

Study type

Observational

Primary location

Brussels, Belgium

Loading trial locations.

About this study

The Micra Registry is a global, prospective, observational, multi-site registry. Patients enrolled in the Micra Registry will be prospectively followed for a minimum of 9 years post-implant or until registry closure, patient death, patient exit from the registry (i.e., withdrawal of consent), or unless patient is participating in an acute performance sub-study of the Micra Registry*.

Enrolled patients will have scheduled follow-up visits at least annually or as prompted by reportable adverse events; however, all Micra system follow-up patient visits are to be reported. Therefore, if more frequent scheduled visits occur per a provider's standard care practice, those visits are reported. The total estimated registry duration is 11 years.

*Patients contributing to an acute performance sub-study of the Micra Registry do not contribute to the FDA-regulated Post-Approval Study which includes a long-term (minimum 9-year) patient follow-up period.

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Patient or legally authorized representative provides written authorization and/or consent per institution and geographical requirements
  • Patient is intended to receive or be treated with a Micra Transcatheter Pacing System and must be enrolled prior to the TPS implant procedure

Exclusion criteria

  • Patient who is, or is expected to be inaccessible for follow-up
  • Patient with exclusion criteria required by local law
  • Patient is currently enrolled in or plans to enroll in any concurrent drug and/or device study that may confound results

Treatment and study plan

Micra Transcatheter Pacing System

Device

The Micra system is a miniaturized single chamber pacemaker system that is delivered via catheter through the femoral vein and is implanted directly inside the right ventricle of the heart. The Micra implantable device is a self-contained, hermetically enclosed, miniaturized single chamber pacemaker. The device is fixated via four electrically inactive nitinol tines, located on the distal end of the device.

Other names: Micra, Micra TPS

Primary outcomes

  1. Acute complication rate

    Time frame: 30-days

    To estimate acute complication rate related to the Micra system and/or implant procedure.

  2. Long-term complication free survival

    Time frame: 9 years

    To estimate the chronic complication free survival rate of the Micra system.

Secondary outcomes

  1. Pacing impedance (ohms) and pacing threshold (volts)

    Time frame: Up to 9 years

    Summary statistics of electrical performance 5-years post-implant measurements will be reported.

  2. Complications stratified by implant type

    Time frame: Up to 9 years

    A listing of Micra system and/or implant procedure related complications stratified by implant types including de novo implants, previous cardiac device, or co-existing hardware. The listing will include complications will be listed including device implant date, complication category, complication date, device-relatedness and seriousness.

  3. Estimate Micra System revision rate

    Time frame: Up to 9 years

    Summary statistics post-implant Micra System revisions, including system explant, replacement (with and without system explant), reposition will be reported.

  4. Estimate System Longevity

    Time frame: Up to 9 years

    Summary statistics regarding battery length will be reported.

  5. Confirm the rate response operation of the Micra system

    Time frame: Approximately 2 years

    Analysis of treadmill testing data from patients implanted with Micra for at least 3 months. Rate response data collected in the registry will be combined with data from the FDA Investigational Device Exemption study (NCT 02004873).

Other outcomes

  1. Micra System complications, pacing impedance (ohms) and pacing threshold (volts), following exposure to MR environment

    Time frame: Up to 9 years

    Micra System performance will be described following use in an MR environment. A listing of MRI related events, pacing impedance (ohms) and pacing threshold (volts) over time following MR exposure may be reported.

Sponsors and collaborators

Lead sponsor

Medtronic

Industry

Registry information

Important dates

Study start
2015
Primary completion
2027
Study completion
2027
First posted
Aug 31, 2015
Registry last updated
Feb 4, 2026

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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