Efficacy of the COronary SInus Reducer in Patients with Refractory Angina II (COSIRA-II)
To demonstrate the safety and effectiveness of the Reducer system for treatment of patients with refractory angina pectoris treated with maximally tolerated guideline-directed medical therapy who demonstrate objective evidence of reversible myocardial ischemia in the distribution of the left coronary artery and who are deemed unsuitable for revascularization.
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Primary Investigator: Timothy Henry