The DeBakey-Mixter atraumatic dissecting and ligature forceps are used by surgeons for precise manipulation of blood vessels and delicate tissues during cardiovascular and general surgery, allowing for atraumatic grasping, mobilization, and clamping with minimal damage to the endothelium. Key features include angled, atraumatic jaws to protect the vessel lining, a design for reaching deep vascular structures, and an ergonomic handle for enhanced control, making them essential for cardiovascular, thoracic, and vascular procedures.