METHOD OF ATYPICAL LASER PAPILLOTOMY Russian patent published in 2019 - IPC A61B18/20 

FIELD: medicine.

SUBSTANCE: invention relates to medicine, namely to abdominal surgery. If it is impossible to visualize the mouth of the great papilla of the duodenum, a "cover" of the ampulla of the great papilla of the duodenum is incised throughout the length, from the center, to one inner edge of the ampoule and to the opposite one, by the YAG:Ho laser radiation, transmitted through a laser light guide, through the operating channel of the choledochoscope introduced antegrade into common bones.

EFFECT: method enables providing the adequate bile flow to the duodenum by dissecting the duodenal papilla's ampulla cover, avoiding the bile duct and duodenum walls damage, reducing the risk of haemorrhage, cicatricial stenosis in the greater duodenal papilla, ruling out EPST conduction in the course of which there is a risk of affecting the mouth of the pancreatic duct that causes post-manipulation pancreatitis, damaging the duodenum walls.

1 cl, 2 dwg