| 摘要 |
PROBLEM TO BE SOLVED: To realize a fluid injection method capable of independently adjusting ablation force and an ablation speed.SOLUTION: A fluid injection method related to a fluid injection device 1 comprising: a pulsating flow generation section 20 for causing the volume of a pressure chamber 80 to be changed by a piezoelectric element 30 and a diaphragm 40, and injecting fluid from a fluid injection opening portion 96 in a pulsed manner; and a pump 10 for supplying the fluid to the pulsating flow generation section 20. In the fluid injection method, a fluid supply flow rate supplied from the pump 10 and a frequency of a volumetric change of the pressure chamber 80 (equivalent to a drive frequency of the piezoelectric element 30) are changed in a proportional relationship. A volumetric change amount (excluded volume) of the pressure chamber 80 changes ablation force, and a product of the excluded volume and the drive frequency changes an ablation speed. Accordingly the ablation force and the ablation speed can be independently adjusted. |
