Aortic stenosis may be treated with Transcatheter Aortic Valve Replacement (TAVR), a time-saving and less-invasive alternative to open-heart surgery. Despite the cost-savings and benefit to the patient, optimizing the mechanical delivery of the valve is challenging; the surgeon approaches the aortic valve with a 6-7F catheter delivery system and struggles to accurately deploy the artificial heart valve; the catheter shaft buckles or elongates as the operator expands the balloon or self-expanding system through the nose cone. Further, the catheter fails to provide sufficient bi-directional rotation to accurately position the heart valve.
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