Surgical Lambert key clamps are used in cardiovascular, vascular, and thoracic procedures to securely but gently clamp blood vessels and organs, preventing bleeding and protecting delicate tissues during operations like aneurysm repair, dissection repair, and valve replacement. Their atraumatic serrated DEBEY-type jaws and curved, slender design provide a firm but non-slip grip, allowing for precise placement in deep surgical areas while minimizing trauma to surrounding tissue.