Clamp, DeBakey Bulldog Clamp, Sklar, 4-1/4 in.,, Blunt, Straight, 1X2 Rows of Nontraumatic Fine Teeth, Stainless Steel, EA. Sklar's DeBakey Atraumatic Bulldog Clamp is a small cross-action thumb clamp used for halting blood flow in a vessel. They are most commonly used in cardiovascular or cardiothoracic procedures. They are available curved or straight, in multiple lengths. This product is straight with 1x2 rows of fine, atraumatic teeth and a length of 4-1/4 inches. Lifetime warranty against all manufacturer defects.