Abstract: A catheter inserter for inserting a balloon catheter into an insertion opening of an endoscope provided with a valve. The balloon catheter includes a balloon attached on a distal end side of a shaft and configured to be expanded by an expansion fluid supplied from a proximal end side of the shaft, and an elastic band wound around an outer periphery of an intermediate portion of the balloon and configured to limit expansion of the balloon at the intermediate portion. The catheter inserter includes, on a distal end side thereof, a restrained member support structure configured to support a portion of an outer periphery of the elastic band. A proximal end support portion supporting a proximal end portion of the elastic band from a proximal end side is provided at a proximal end portion of the restrained member support structure.

Abstract: An electrical catheter device includes a catheter including a first electrode, a second electrode, a first conductor connected to the first electrode and extending toward a proximal end of a defibrillation catheter, a second conductor connected to the second electrode and extending toward the proximal end, and a connector that integrally accommodates a proximal end portion of the first conductor and a proximal end portion of the second conductor; and a voltage applying device that is connected to the connector and applies different voltages to the proximal end portion of the first conductor and the proximal end portion of the second conductor. In the connector, a creepage distance longer than a spatial distance is provided between the proximal end portion of the first conductor and the proximal end portion of the second conductor. [Selected Drawing] FIG.