Removal of a common duct stone with a "filet" T-tube

In a patient who had had cholecystectomy, a common duct stone was removed with a filet T-tube, the open limbs of the tube closing around the stone so that it could be pulled out along the track of the T-tube stem. The maneuver was successfully repeated in a dog. The use of the filet tube is recommended when a T-tube is to be placed in the common duct.