Mallinckrodt Initiates a Recall of Its Respiratory Valves Categorized as Class I by FDA Mallinckrodt Manufacturing has initiated an urgent recall of its One-Way Valve 22F x 22M devices after discovering that the valves were malfunctioning. The United States Food and Drug Administration (FDA) has categorized this recall as Class I, … [Read more...] about Mallinckrodt One-Way Valve Wrongful Death Lawsuit Lawyers