Abstract: The blood circulation circuit 1 includes: a blood removal line 2 that removes venous blood; a blood storage tank 4 that is connected to the blood removal line 2 and stores the blood that has flowed through the blood removal line 2; a negative pressure adjusting device 6 that adjusts a negative pressure inside the blood storage tank 4; a blood pump 5 that pumps the blood in the blood storage tank 4; an artificial lung 7 that performs gas exchange of the blood pumped from the blood pump 5; and a blood collecting line 3 that is connected to the blood storage tank 4 and sucks blood from a surgical site by the negative pressure in the blood storage tank 4.

Abstract: A gas circuit breaker includes a breaking unit tank incorporating a fixed electrode and a movable electrode, a spring operation device including a breaking spring and a closing spring and configured to move the movable electrode, and a mechanism unit configured to couple the movable electrode side and the spring operation device side and transmit power received from the spring operation device to the movable electrode. The spring operation device is supported by a frame. The frame is fixed to a rear plate provided in a mechanism unit frame of the mechanism unit. A breaking spring case and a closing spring case of the spring operation device are fixed to pedestals via a plate member 38 and a support section 7.

Abstract: A gas circuit breaker includes a breaking unit tank incorporating a fixed electrode and a movable electrode, a spring operation device including a breaking spring and a closing spring and configured to move the movable electrode, and a mechanism unit configured to couple the movable electrode side and the spring operation device side and transmit power received from the spring operation device to the movable electrode. The spring operation device is supported by a frame. The frame is fixed to a rear plate provided in a mechanism unit frame of the mechanism unit. A breaking spring case and a closing spring case of the spring operation device are fixed to pedestals via a plate member 38 and a support section 7.