DRAIN PIPE Russian patent published in 1995 - IPC

FIELD: medicine; draining of biliary tracts on completion of choledochotomy. SUBSTANCE: device comprises a T-shaped pipe 1 with microchannels 2 passing on its two sides in the depth of the pipe wall. Said channels pass from the vertical 3 to the horizontal 4 part of drainage and are open at the ends 5. EFFECT: reduced risk of clogging of the drain lumen with fibrin, pus, lower pressure in the system of tracts, rapid and efficient treatment of cholangitis.