CONTROL DEVICE FOR FUEL INJECTION APPARATUS, AND SURGICAL SCALPEL

摘要

PROBLEM TO BE SOLVED: To provide a fuel injection method capable of independently adjusting a cutting force and a cutting speed.SOLUTION: The fuel injection method relating to a fuel injection apparatus 1 includes a pulsating flow generation part 20 for injecting a fluid in a pulse shape from a fluid injection opening 96 while changing capacity of a pressure chamber 80 through a piezoelectric element 30 and a diaphragm 40 and a pump 10 for supplying the fluid to the pulsating flow generation part 20, and proportionally changes a fluid supply flow rate supplied from the pump 10 and a frequency of a capacity change of the pressure chamber 80 (corresponding to a drive frequency of the piezoelectric element 30). A capacity change amount (exclusion capacity) of the pressure chamber 80 changes a cutting force and a product of the exclusion capacity and the drive frequency changes a cutting speed, such that the cutting force and the cutting speed can be adjusted independently.