Ventricular assist system and blood pump controller

A ventricular assist system comprising:

• a blood pump having:
• a fixed side slide member having an annular first slide surface;
• a rotary side slide member having an annular second slide surface;
• a blood pump chamber positioned on an outer peripheral side of the fixed side slide member and the rotary side slide member, an impeller housed in the blood pump chamber and being integrally rotatable with the rotary side slide member;
• a motor capable of imparting rotary energy to the impeller;
• and a cool sealing liquid flow chamber which is positioned on an inner peripheral side of the fixed side slide member and the rotary side slide member and through which a cool sealing liquid supplied from an outside flows, the blood pump being used in a state where the first slide surface and the second slide surface are brought into contact with each other, and the cool sealing liquid is supplied to a gap formed between the first slide surface and the second slide surface from the cool sealing liquid flow chamber;
• a blood pump controller for driving the blood pump and for supplying the cool sealing liquid to the blood pump;
• an electric cable for transmitting a drive signal from the blood pump controller to the blood pump;
• an up tube through which the cool sealing liquid is made to flow from the blood pump controller to the blood pump;
• and
• a down tube through which the cool sealing liquid is made to flow from the blood pump to the blood pump controller, wherein
• the blood pump controller includes:
• a blood pump drive circuit electrically connected to the electric cable and provided for driving the motor of the blood pump;
• a battery electrically connected to the blood pump drive circuit for supplying a power source to the blood pump drive circuit;
• a first cool sealing liquid reservoir for storing the cool sealing liquid;
• a cool sealing liquid pump for sucking the cool sealing liquid supplied from the first cool sealing liquid reservoir and discharging the sucked cool sealing liquid;
• a first pipe joint formed of a first pipe joint upstream side and a first pipe joint downstream side which are detachably connected to each other and being capable of relaying the cool sealing liquid supplied from the cool sealing liquid pump;
• a second pipe joint formed of a second pipe joint upstream side and a second pipe joint downstream side which are detachably connected to each other where the second pipe joint downstream side is connected to the up tube so as to enable the second pipe joint to relay the cool sealing liquid supplied from the first pipe joint to the up tube;
• a third pipe joint formed of a third pipe joint upstream side and a third pipe joint downstream side which are detachably connected to each other where the third pipe joint upstream side is connected to the down tube so as to enable the third pipe joint to relay the cool sealing liquid supplied from the down tube to an inside of the blood pump controller;
• and
• a fourth pipe joint formed of a fourth pipe joint upstream side and a fourth pipe joint downstream side which are detachably connected to each other and being capable of relaying the cool sealing liquid supplied from the third pipe joint downstream side to the first cool sealing liquid reservoir, and
• the blood pump controller includes:
• a first sub controller (home station) having the first cool sealing liquid reservoir, the cool sealing liquid pump, the first pipe joint upstream side, and the fourth pipe joint downstream side;
• and
• a second sub controller (a portable side controller) having the blood pump drive circuit, the battery, the first pipe joint downstream side, the second pipe joint upstream side, the third pipe joint downstream side, and the fourth pipe joint upstream side, and
• the first sub controller and the second sub controller are separable from each other and are joinable to each other by detachably connecting the first pipe joint and the fourth pipe joint.