The Study for Evaluation of Acute Phase Safety and Efficacy of 'Pivot Bridge' to Short-term Treat FTR

Inclusion Criteria: * Adult males and females aged 20 years or above * Patients with clinical symptoms (Symptomatic) whose degree of tricuspid regurgitation using echocardiography meets the criteria of Severe or higher presented in the TR grade classification table * Short-term treatment using a catheter is required (expected to be effective) by a local site heart team including at least one cardiothoracic (cardiovascular) specialist and at least one thoracic surgeon each, and clinical symptoms of NYHA Class Ⅱ or higher person who falls under * In the screening test, A person who can confirm the possibility of reducing tricuspid valve regurgitation by inserting that 'Pivot Balloon' (Clinical Trial Approval No. 1327), etc.) through the same access path as the 'Pivot Bridge', a clinical trial medical device * An individual who voluntarily agreed to the participation in the clinical trial and signed the written consent * An individual who is able to understand and comply with the instructions and who can participate in the period before the clinical trial Exclusion Criteria: * Uncontrolled hyperthyroidism * A recent formation of soft blood clot or embolic material * Uncorrected coagulopathy * Prohibition of anticoagulant agents * Those who had experience with anticoagulant use prior to participation in this clinical trial and who were treated with major bleeding (minor bleeding such as nosebleeds that can be hemostasis not applicable) due to anticoagulant use at this time or accompanied by severe anemia requiring hospitalization one with experience * Previous insertion of a device such as an Implantable Cardioverter Defibrillator (ICD) or a pacemaker * Those who is judged to have little possibility of reducing tricuspid valve regurgitation by inserting a balloon-type device (e.g. ASD sizing balloon, pivot balloon, etc.) through the same access route as the clinical trial medical device 'Pivot Bridge' * Persons with an anatomical structure that cannot be inserted through the corresponding route