Proper exposure at the porta hepatis has always been considered an important safety factor in surgery of the biliary tract. The ability to visualize easily the vital structures in that region in most instances means the difference between a relatively easy procedure and a difficult one. The use of a Deaver retractor on both sides of the gall bladder extending down to the porta has usually sufficed to give adequate visualization. However, the difficulty of keeping both retractors in a constant position and the need for two assisting hands to hold these retractors are conditions that might be improved.
The retractor shown in Figure 1 obviates these objections by providing retracting blades that cannot move independently and by requiring only one assisting hand to retract on both sides of the gall bladder. In essence, the retractor utilizes two thin spring-metal blades attached above by a single shank and separated for