CARDIAC VALVE WITH SHIELDS FOR TISSUE RETRACTION

摘要

A tissue retraction system for a bioprosthetic cardiac valve base configured for attachment to a separate leaflet set includes a plurality of retraction shields releasably attached to the valve base. The retraction shields are configured to restrain tissue within a surgical site. The retraction shields may be flexible and transparent. Shield extenders can be attached to the retraction shields and used to further secure the retraction shields to a device for providing tissue retraction during a surgical procedure.