85
Participants
Start Date
November 30, 2015
Primary Completion Date
February 29, 2016
Study Completion Date
February 29, 2016
endoscopic retrograde biliary drainage
A 8.5 F plastic stent with proximal flap (XinChang medical instrument co., LTD,Shanghai, China) will be inserted into common bile duct with standard procedure.
endoscopic nasobiliary drainage
A nose bile duct(XinChang medical instrument co., LTD,Shanghai, China) will be inserted into common bile duct with standard procedure.
Hangzhou First People's Hospital, Hangzhou
First People's Hospital of Hangzhou
OTHER