Patent ID: 9234516
Filing Date: 2016-01-12
CPC Classification: A61B,F04B

Claim Text:
1. A fluid supply unit for use in combination with a pulse generation unit that generates vapor bubbles to eject pulsating flow and an operation command input unit that generates an operation command delivered to a drive control unit to operate the pulse generation unit and the fluid supply unit, the fluid supply unit comprising: a pump chamber; a pump chamber volume changing section that changes the volume of the pump chamber to supply fluid to the pulse generation unit that is configured to generate vapor bubbles with an optical fiber or heater; the pump chamber volume changing section being configured to increase the volume of the pump chamber towards a second volume level when the operation command from the operation command input unit is not input to the drive control unit, the pump chamber volume changing section being configured to increase the volume of the pump chamber towards the second volume when the volume of the pump chamber has reached a first volume level and the operation command is input, and the pump chamber volume changing section being configured to decrease the volume of the pump chamber toward the first volume level until the volume reaches the first volume level when the operation command is input.