Defibrillation system and defibrillation catheter

A defibrillation system comprising:

• a defibrillation catheter having a handle member on a proximal side and at least one intracardiac electrode on a distal side,
• a power supply part for applying a pulse voltage to the defibrillation catheter,
• a handle member,
• a first connector member, and
• a second connector member;
• the power supply part connected to the second connector member to be connected to the first connector member,
• the handle member connected to the first connector member connected to the intracardiac electrode,
• the first connector member comprising:
• a first insulating member,
• a plurality of first electrodes protruding from the first insulating member, and
• a first tubular member accommodating the first insulating member and the plurality of first electrodes;
• the second connector member comprising:
• a second insulating member having a plurality of longitudinal holes,
• a plurality of second electrodes disposed on an inner wall of the plurality of longitudinal holes, and
• a second tubular member accommodating the second insulating member;
• the first connector member and the second connector member being configured to be connectable to each other so that the plurality of first electrodes are insertable into the plurality of longitudinal holes of the second connector member, and the plurality of first electrodes are connectable to the plurality of second electrodes disposed in the plurality of longitudinal holes;
• and
• the first tubular member, the first insulating member, and the first electrodes configured, so that the first connector member comprises:
• a first space capable of containing at least a part of the second tubular member outside the first insulating member and inside the first tubular member when the first and second tubular members are connected,
• a second space not containing the first insulating member but containing the first electrodes,
• a third space containing neither the first insulating member nor the first electrodes;
• and
• the first space, the second space, and the third space being in this order from the side close to the handle member, wherein
• the second insulating member and the second tubular member are configured so that an entire circumferential edge of an end surface of the second insulating member, at which the plurality of longitudinal holes are formed, is directly contacted with and surrounded by an inner wall of the second tubular member.