Patent ID: 8506548

Claim:
A connector comprising: a connector main body provided with a tubular portion; and a stopcock that is fitted in the tubular portion so as to be rotatable around an axis of the tubular portion, wherein one end of the tubular portion is sealed with the stopcock that is fitted in the tubular portion, a first flow channel and a second flow channel are formed in the stopcock, a first hole, a second hole, a third hole, and a fourth hole are formed in the connector main body, the first, the second, the third, and the fourth holes are holes that bring an inner space of the tubular portion into communication with an external space of the connector main body, the first, the second, the third, and the fourth holes are open to an inner circumferential surface of the tubular portion and facing the stopcock, and the connector is configured to switch between a first setting that brings the inner space of the tubular portion into communication with the first hole via the first flow channel and a second setting that brings the inner space of the tubular portion into communication with the second hole via the first flow channel and brings the third hole into communication with the fourth hole via the second flow channel by rotating the stopcock.