Safety and Effectiveness of Left Atrial Appendage Occlusion

Inclusion Criteria: 1. Documented history (paroxysmal, persistent or permanent) of AF \[one episode within the last 12 months of enrollment\] 2. Elective Maze procedure 3. Suitable anatomy 4. Able and willing to sign informed consent 5. Age over 18 years Exclusion Criteria: 1. Patient from Intensive Care Unit with either: 1. intra-venous catecholamines 2. ventilator 3. cardiac index \<1.8 l/min. 2. Reoperative Cardiac Surgery 3. Systemic or Inflammatory disease 4. Dialysis 5. Recent myocardial infarction (\< 21 days) 6. History of pericarditis 7. Patient taking part in any other device or drug study 8. Patient with known sensitivity or allergy to any of the device components 9. Pregnancy