| 摘要 |
An elastic tube ( 40 ) is connected to the base end portion of a catheter main body (1) having a balloon ( 2 ) at its top end portion. When the elastic tube ( 40 ) is set at a vibrator device (RP), the end portion side of the elastic tube, projecting outside, works as a margin volume part (40A). A roller ( 53 ) of the vibrator device (RP) can have a shut-off state where the elastic tube ( 40 ) is pressed and completely closed, and a communication state where the elastic tube cannot be pressed. When the roller ( 53 ) is rotated in a predetermined direction with the inside of a route from the balloon ( 2 ) up to the elastic tube ( 40 ) filled up with a liquid for heating, the liquid in the elastic tube ( 40 ) is pressed toward the margin volume part ( 40 A) in the shut-off state, while in the communication state, the pressurized heating liquid in the margin volume part ( 40 A) flows backward to the balloon ( 2 ) side. Repeating the pressurizing and the backward flow vibrates the heating liquid in the balloon ( 2 ). When the balloon ( 2 ) is larger, the length (V) of the margin volume part ( 40 A) is made longer, so that an adequate level of vibration in accordance with the size of the balloon ( 2 ) can be applied. |
