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Device profile of the Resolute Onyx Zotarolimus eluting coronary stent system for the treatment of coronary artery disease: overview of its safety and efficacy

ABSTRACT Introduction: The increasing complexity of patients undergoing percutaneous coronary intervention (PCI) regarding both coronary anatomy and comorbidities requires dedicated devices. The Resolute Onyx (R-Onyx, Medtronic, CA, USA) stent is a novel durable polymer zotarolimus-eluting stent (ZES) promising better deliverability, increased radiopacity and lower thrombogenicity. Areas covered: In this review, we discuss device features, preclinical evidence, and clinical studies including patients treated with R-Onyx. The BIONYX and Onyx ONE studies were two major landmark trials demonstrating non-inferiority of R-Onyx as compared to other latest generation devices. We also elaborate on alternative innovations in drug-eluting stent (DES) technology and how R-Onyx fits into this field. Expert opinion: R-Onyx is designed to address the challenges of contemporary PCI, but evidence on its clinical performance is largely derived from studies on older generation devices from the ZES family. Nonetheless, all clinical studies on R-Onyx consistently show excellent outcomes, with particularly low rates of stent thrombosis, making it a promising candidate for short dual antiplatelet regimens. In addition, R-Onyx is available with a wide range of stent diameters allowing accurate sizing for both very small and very large coronary vessels.