The Atrium Retraction System Set (Ref. FC420R) is a modular self-retaining retraction system that provides adjustable, hands-free exposure of the operative field using a supporting frame together with interchangeable blades. This item is supplied as a set consisting of 13 listed components. It is applicable to general surgical exposure, procedures requiring extended hands-free retraction. Each unit is identified by catalog reference FC420R and is available on a request-a-quote basis for hospitals, surgical centers, distributors, and procurement teams. As a self-retaining instrument, it is intended to maintain stable exposure of the operative field without continuous manual assistance, supporting consistent access throughout retraction systems procedures.