Cannulation method, information processing system and medical system
A cannulation method includes inserting an endoscope into a duodenum, bringing a distal end section of the endoscope to a position where a duodenal papilla is within a field of view of the endoscope, promoting secretion of pancreatic juice or bile by administering a drainage stimulant, determining an amount of relaxation of the duodenal papilla, and performing cannulation into a biliary duct through the duodenal papilla where the amount of relaxation is greater than a predetermined amount.
1 . A cannulation method comprising:
inserting an endoscope into a duodenum;
bringing a distal end section of the endoscope to a position where a duodenal papilla is within a field of view of the endoscope;
promoting secretion of one of pancreatic juice or bile by administering a drainage stimulant;
determining an amount of relaxation of the duodenal papilla; and
performing cannulation into a biliary duct through the duodenal papilla where the amount of relaxation is greater than a predetermined amount;
wherein the promoting of the secretion comprises determining a dose of the drainage stimulant based on the determined amount of relaxation of the duodenal papilla; and
the determination of the amount of relaxation of the duodenal papilla is based on:
at least one of a luminance of the pancreatic juice, and a color of the pancreatic juice in an endoscope image acquired by the endoscope; or
at least one of a luminance of the bile, and a color of the bile in the endoscope image acquired by the endoscope.
2 . The cannulation method according to claim 1 , wherein the promoting of the secretion comprises administering the drainage stimulant from the endoscope brought to the position.
3 . The cannulation method according to claim 1 , wherein the promoting of the secretion comprises administering the drainage stimulant from the endoscope to the duodenal papilla subsequent to the bringing of the distal end section of the endoscope to the position.
4 . The cannulation method according to claim 1 , wherein the promoting of the secretion comprises administering the drainage stimulant orally prior to the inserting of the endoscope.
5 . The cannulation method according to claim 1 , wherein the promoting of the secretion comprises administering the drainage stimulant as an agent for promoting secretion of pancreatic juice.
6 . The cannulation method according to claim 1 , wherein the promoting of the secretion comprises administering the drainage stimulant as an agent for promoting secretion of bile.
7 . The cannulation method according to claim 1 , subsequent to the bringing of the distal end section of the endoscope to the position where the duodenal papilla is within the field of view of the endoscope, fixing a position of the endoscope at the position.
8 . The cannulation method according to claim 1 , further comprising, subsequent to the bringing of the distal end section of the endoscope to the position where the duodenal papilla is within the field of view of the endoscope, at least indirectly increasing a hardness of the endoscope.
9 . The cannulation method according to claim 1 , wherein the bringing of the distal end section of the endoscope to the position where the duodenal papilla is within the field of view of the endoscope comprises electrically driving one or more of a forward/backward movement, rolling movement and curving movement of the endoscope in an electrically driving mode.
10 . The cannulation method according to claim 9 , further comprising switching between the electrically driving mode and a manually driving mode.