Extravascular ICD Pivotal Study


About this study

The purpose of this study is to demonstrate safety and effectiveness of the Extravascular Implantable Cardioverter Defibrillator (EV ICD) System.

Participation eligibility

Participant eligibility includes age, gender, type and stage of disease, and previous treatments or health concerns. Guidelines differ from study to study, and identify who can or cannot participate. There is no guarantee that every individual who qualifies and wants to participate in a trial will be enrolled. Contact the study team to discuss study eligibility and potential participation.

Inclusion Criteria:

  • Patient has a Class I or IIa indication for implantation of an ICD according to the ACC/AHA/HRS Guidelines, or ESC guidelines. 
  • Patient is at least 18 years of age and meets age requirements per local law. 
  • Patient is geographically stable and willing and able to complete the study procedures and visits for the duration of the follow-up.

Exclusion Criteria: 

  • Patient is unwilling or unable to personally provide Informed Consent. 
  • Patient has indications for bradycardia pacing or Cardiac Resynchronization Therapy (CRT) (Class I, IIa, or IIb indication). 
  • Patient with an existing pacemaker, ICD, or CRT device implant or leads. 
  • Patients with these medical interventions are excluded from participation in the study: 
    • Prior sternotomy;
    • Any prior medical condition or procedure that leads to adhesions in the anterior mediastinal space (i.e., prior mediastinal instrumentation, mediastinitis);
    • Prior abdominal surgery in the epigastric region;
    • Planned sternotomy;
    • Prior chest radiotherapy Or any other prior/planned medical intervention not listed that precludes their participation in the opinion of the Investigator.
  • Patient has previous pericarditis that:
    • Was chronic and recurrent; or
    • Resulted in pericardial effusion; or
    • Resulted in pericardial thickening or calcification. 
  • Patients with these medical conditions or anatomies are excluded from participation in the study: 
    • Hiatal hernia that distorts mediastinal anatomy;
    • Marked sternal abnormality (e.g., pectus excavatum);
    • Decompensated heart failure;
    • COPD with oxygen dependence;
    • Gross hepatosplenomegaly.
  • Or any other known medical condition or anatomy type not listed that precludes their participation in the opinion of the Investigator.
  • Patients with a medical condition that precludes them from undergoing defibrillation testing: 
    • Severe aortic stenosis;
    • Intracardiac LA or LV thrombus;
    • Severe proximal three-vessel or left main coronary artery disease without revascularization;
    • Hemodynamic instability;
    • Unstable angina;
    • Recent stroke or transient ischemic attack (within the last 6 months);
    • Known inadequate external defibrillation; 
    • LVEF < 20%;
    • LVEDD > 70 mm.
  • Or any other known medical condition not listed that precludes their participation in the opinion of the Investigator. 
  • Patient with any evidence of active infection or undergoing treatment for an infection. 
  • Patient is contraindicated from temporary suspension of oral/systemic anticoagulation.
  • Patient with current implantation of neurostimulator or any other chronically implanted device that delivers current in the body. 
  • Patient meets ACC/AHA/HRS or ESC clinical guideline Class III criteria for an ICD (e.g., life expectancy of less than 12 months). 
  • Patient is enrolled or planning to enroll in a concurrent clinical study that may confound the results of this study, without documented pre-approval from a Medtronic study manager. 
  • Patient with any exclusion criteria as required by local law (e.g., age or other).
  • Pregnant women or breastfeeding women, or women of child bearing potential and who are not on a reliable form of birth regulation method or abstinence.

Participating Mayo Clinic locations

Study statuses change often. Please contact the study team for the most up-to-date information regarding possible participation.

Mayo Clinic Location Status Contact

Rochester, Minn.

Mayo Clinic principal investigator

Yongmei Cha, M.D.

Closed for enrollment

Contact information:

Amanda Galuska



More information


Publications are currently not available

Mayo Clinic Footer