METHOD FOR BILE SAMPLING FROM COMMON BILE DUCT Russian patent published in 2015 - IPC A61B1/00 A61M25/01 

FIELD: medicine.

SUBSTANCE: duodenoscopy is performed with the use of an endoscope with its inspection window on the side. The greater duodenal papilla is visualised. It is cannulated with a Teflon catheter with a working end having an aperture in the middle. An end face of the working end of the catheter is inclined at an angle of 45°. Two apertures of 0.2 cm in diameter are arranged oppositely diametrically on its sides. The first aperture is arranged at 0.4 cm from the end face. The second is found at 0.8 cm. A metal lift is actuated to advance the catheter into a lumen of the common bile duct. A sterile syringe is attached to a connector of the catheter; the syringe is pulled out to draw the bile into the catheter. The syringe piston is pulled out to a 8 ml mark and then released. The manipulation is repeated until the bile penetrates into the syringe. After the bile ingress into the syringe is visualised, the piston is pulled out to a 5 ml mark. A 2-second pause is made. The piston is released. In the course of bile aspiration, the catheter is advanced along the common bile duct 1-2 cm above.

EFFECT: method enables fast and effective bile aspiration from the lumen of the common bile duct, preparation of the material free from the intestinal discharge and pancreatic fluid, as well as reduces a risk of the catheter suction to a wall of the common bile duct ensured by the catheter structure and a certain sequence of the syringe piston motions.

4 dwg, 1 ex