| 摘要 |
PROBLEM TO BE SOLVED: To prevent air from intrudes in a system by seating a floating member of a valve provided with an outlet in flow communicating to a suction device on a valve seat so as to closely seal the opening of the valve seat when the medical dye in a chamber substantially runs out. SOLUTION: A valve 30 is arranged between a container 20 and a three-way flow control valve 40, and when a medical dye container 20 becomes empty, an operator is warned of it. The valve 30 includes a housing in which an upper part is surrounded by an inlet and a lower part is surrounded by an outlet. The inlet fluid-communicates to the medical dye container 20 through a conduit 22, and the outlet fluid-communicates to the three-way flow control valve 40 through a conduit 38. In the housing of the valve 30, a substantially conical valve seat is arranged to communicate to the outlet through the opening of the valve seat. A floating member with diameter larger than that of the outlet is positioned in a floating chamber. When the medical dye in the floating chamber runs out, the floating member is seated on the valve seat to block the outlet, and intrusion of air or other fluids are prevented. |
