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The LEADLESS Pacemaker IDE Study (Leadless II)

This study has suspended participant recruitment.
(Reports of Battery Anomalies)
Information provided by (Responsible Party):
St. Jude Medical Identifier:
First received: January 6, 2014
Last updated: November 10, 2016
Last verified: November 2016

Prospective, non-randomized, single-arm, international multicenter, clinical safety and effectiveness of a leadless pacemaker system in patients who are indicated for a VVIR pacemaker.

Following completion of enrollments in the IDE, patients will continue to be enrolled in the continued access phase of the study under the same protocol.

Condition Intervention
Bradycardia Device: Leadless Pacemaker

Study Type: Interventional
Study Design: Intervention Model: Single Group Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Official Title: Safety and Effectiveness Trial for the Nanostim Leadless Pacemaker

Further study details as provided by St. Jude Medical:

Primary Outcome Measures:
  • Complication-Free Rate [ Time Frame: 6 months ]
  • Pacing thresholds and R-wave amplitudes within the therapeutic range [ Time Frame: 6 months ]

Secondary Outcome Measures:
  • appropriate and proportional rate response during graded exercise testing [ Time Frame: 3-6 months ]

Estimated Enrollment: 1567
Study Start Date: February 2014
Estimated Study Completion Date: December 2017
Estimated Primary Completion Date: September 2017 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: Leadless Pacemaker
VVIR pacing
Device: Leadless Pacemaker
Patients will undergo an attempted leadless pacemaker implant

Detailed Description:
The purpose of this study is to evaluate the safety and effectiveness of the leadless pacemaker system in treating patients with a slow heart rate or irregular heartbeats. The Nanostim leadless pacemaker provides bradycardia pacing as a pulse generator with built-in battery and electrodes, for permanent implantation in the right ventricle. As a leadless pacemaker, it does not need a connector, pacing lead, or pulse generator pocket, but it has the same operating principles as a conventional pacemaker.

Ages Eligible for Study:   18 Years and older   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  1. Subject must have one of the clinical indications before device implant in adherence with Medicare, ACC/AHA/HRS/ESC single chamber pacing guidelines including:

    • Chronic and/or permanent atrial fibrillation with 2 or 3° AV or bifascicular bundle branch block (BBB block), including slow ventricular rates (with or without medication) associated with atrial fibrillation; or
    • Normal sinus rhythm with 2 or 3° AV or BBB block and a low level of physical activity or short expected lifespan (but at least one year); or
    • Sinus bradycardia with infrequent pauses or unexplained syncope with EP findings; and
  2. Subject ≥18 years of age; and
  3. Subject has life expectancy of at least one year; and
  4. Subject is not enrolled in another clinical investigation; and
  5. Subject is willing to comply with clinical investigation procedures and agrees to return for all required follow-up visits, tests, and exams; and
  6. Subject has been informed of the nature of the study, agrees to its provisions and has provided written informed consent, approved by the IRB; and
  7. Subject is not pregnant and does not plan to get pregnant during the course of the study.

Exclusion Criteria:

  1. Subject has pacemaker syndrome, has retrograde VA conduction or suffers a drop in arterial blood pressure with the onset of ventricular pacing; or
  2. Subject is allergic or hypersensitive to <1 mg of dexamethasone sodium phosphate; or
  3. Subject has a mechanical tricuspid valve prosthesis; or
  4. Subject has a pre-existing endocardial pacing or defibrillation leads; or
  5. Subject has current implantation of either conventional or subcutaneous implantable cardioverter defibrillator (ICD) or cardiac resynchronization therapy (CRT); or
  6. Subject has an implanted vena cava filter; or
  7. Subject has evidence of thrombosis in one of the veins used for access during the procedure; or
  8. Subject has an implanted leadless cardiac pacemaker; or
  9. Subject had recent cardiovascular or peripheral vascular surgery within 30 days of enrollment
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT02030418

  Show 59 Study Locations
Sponsors and Collaborators
St. Jude Medical
Principal Investigator: Vivik Reddy, MD Mount Sinai Hospital, New York
  More Information

Publications automatically indexed to this study by Identifier (NCT Number):
Responsible Party: St. Jude Medical Identifier: NCT02030418     History of Changes
Other Study ID Numbers: DC-02374
Study First Received: January 6, 2014
Last Updated: November 10, 2016

Additional relevant MeSH terms:
Arrhythmias, Cardiac
Heart Diseases
Cardiovascular Diseases
Pathologic Processes processed this record on August 18, 2017