EFS of the DUO System for Tricuspid Regurgitation

Inclusion Criteria: 1. Presence of severe or greater tricuspid regurgitation as determined by the Echo Core Lab. 2. Patient is symptomatic despite medical therapy. 3. The local Site Heart Team determines the Patient is appropriate for transcatheter valve intervention. 4. The Patient's anatomy is suitable in the judgment of the Patient Selection Committee. 5. Age ≥18 years 6. The Patient has been informed of the nature of the study and agrees to its provisions and has provided written Informed Consent. Exclusion Criteria: 1. Patient is currently participating in another clinical investigation that could affect the outcome of this trial. 2. Any previous tricuspid valve intervention that would interfere with the placement of the investigational device. 3. Moderate or greater tricuspid valve stenosis. 4. Severe aortic, mitral and/or pulmonic valve stenosis and/or regurgitation 5. Pacemaker or implantable cardioverter-defibrillator (ICD) leads that would prevent appropriate placement of the investigational device. 6. Need for concomitant surgical or interventional procedure, known at the time of screening (e.g., CABG, Atrial Septal Defect (ASD) repair). 7. Ejection Fraction (EF) \<25% 8. Echocardiographic evidence of unstable intracardiac mass, thrombus or vegetation 9. Patient has Systolic Pulmonary Pressure (sPAP) \>60 mm Hg 10. Severe hemodynamic instability: cardiogenic shock or the need for inotropic support or Intra-Aortic Balloon Pump (IABP) or other percutaneous ventricular assist devices 11. Severe respiratory instability with continuous use of home oxygen 12. Severe right ventricular dysfunction 13. Untreated clinically significant coronary or carotid artery disease requiring revascularization surgical or interventional PCI. 14. Stroke or transient ischemic event within 90 days prior to the index procedure 15. Acute myocardial infarction within 30 days before the index procedure 16. Renal insufficiency (eGFR \<25 ml/min) or currently on chronic dialysis 17. Active endocarditis within 6 months of the index procedure 18. Pulmonary embolism or deep vein thrombosis within the last 6 months 19. Any surgical, interventional, or transcatheter procedure within 30 days prior to the index procedure 20. Hypertrophic cardiomyopathy, restrictive cardiomyopathy or constrictive pericarditis 21. Life expectancy \<1 year 22. Active infections requiring current antibiotic therapy 23. Known severe liver disease 24. Is on the waiting list for a transplant or has had a prior heart or lung transplant 25. Known active peptic ulcer or active GI bleed 26. Unable to take anticoagulant therapy 27. Any known major coagulation abnormalities, thrombocytopenia, platelets \< 50,000/ml or severe anemia Hb \<8 g/dl 28. Known patient is actively abusing drugs 29. Any known sensitivities or allergies to contrast (that cannot be adequately premedicated) and/or the device materials, including nickel and titanium 30. Patients who are pregnant or intend to become pregnant 31. Any condition making it unlikely the Patient will be able to complete all protocol procedures (including compliance with optimal medical therapy and immobility that would prevent completion of 6MWT), follow-up visits, or impact the scientific soundness of the clinical investigation result