THREE-WAY STOPCOCK, AND LIQUID TRANSFUSION TUBING SET OR BLOOD TRANSFUSION BLOOD TRANSFUSION TUBING SET USING THE THREE-WAY STOPCOCK

摘要

A three-way stopcock that can be opened/closed in the same manner as conventional operation methods and can reduce stagnated portions of fluid in a fluid flow passage. Out of branch openings, a first branch opening and a second branch opening are arranged on a straight line, and a third branch opening is directed perpendicularly to the line connecting the first and second branch openings. Provided at a flow passage switch portion are a firs t flow-passage opening and a second flow-passage opening that are arranged on a straight line and a third flow-passage opening that is directed perpendicularly to the line connecting the first and second branch openings. Two fluid routes, which are a fluid route connecting the first flow-passage openings and a fluid route connecting the third and second flow-passage openings, are provided so that the two fluid routes can communicate with in the vicinity of the third flow-passage opening.