Covidien (Mansfield, Massachusetts) is recalling all production lots for its Duet TRS Universal Straight and Articulating single use loading units (SULUs), with respect to the use of the products in the thoracic cavity. The company is calling it a voluntary recall, however Covidien says it has received reports of 13 serious injuries and three patient deaths following the application of Duet TRS in the thoracic cavity.