Blood treatment filter device, priming method, and blood treatment method

A priming method for a blood treatment filter device having:

• a body container which has a first port and a second port which are continuous to an internal space and which is disposed with the first port located above the second port in a gravity direction;
• a blood treatment filter in a dry state placed in the internal space of the body container;
• a first blood circuit which is connected to the first port and through which liquid flows;
• a second blood circuit which is connected to the second port and through which liquid flows;
• a first bypass circuit which is connected to the first blood circuit and the second blood circuit and through which liquid flows;
• and
• a second bypass circuit which is connected to a side closer to the first port relative to a connection position of the first bypass circuit in the first blood circuit and is connected to a side further from the second port relative to a connection position of the first bypass circuit in the second blood circuit and through which liquid flows,
• the priming method comprising:
• individually closing the circuit between a connection position of the first bypass circuit and a connection position of the second bypass circuit in each of the first blood circuit and the second blood circuit to cause a priming liquid to flow into the internal space of the body container from the first blood circuit through the first bypass circuit, the second blood circuit,
• and the second port, and then to cause the priming liquid to flow out of the internal space of the body container to the second blood circuit through the first port, the first blood circuit, and the second bypass circuit.

A blood treatment filter device comprising:

• a body container which has a first port and a second port which are continuous to an internal space and which is disposed with the first port located above the second port in a gravity direction;
• a blood treatment filter in a dry state placed in the internal space of the body container;
• a first blood circuit which is connected to the first port and through which liquid flows;
• a second blood circuit which is connected to the second port and through which liquid flows;
• a first bypass circuit which is connected to the first blood circuit and the second blood circuit and through which liquid flows;
• a second bypass circuit which is connected to a side closer to the first port relative to a connection position of the first bypass circuit in the first blood circuit and is connected to a side further from the second port relative to a connection position of the first bypass circuit in the second blood circuit and through which liquid flows;
• a valve which opens/closes the circuit between a connection position of the first bypass circuit and a connection position of the second bypass circuit in the first blood circuit;
• a valve which opens/closes the circuit between a connection position of the first bypass circuit and a connection position of the second bypass circuit in the second blood circuit;
• a valve which opens/closes the first bypass circuit;
• and
• a valve which opens/closes the second bypass circuit.