Patent ID: 8623039

Claim:
A method of incising a biological tissue using a liquid injecting device comprising: the liquid injecting device comprising: a pulsating flow generation unit for generating a pulsating flow to a liquid flow according to a driving waveform; a fluid injection unit for injecting the fluid from the pulsating flow generation unit; an adjusting unit for selecting a driving waveform; and operating the adjusting unit to apply a first driving waveform to the pulsating flow generation unit when the biological tissue has a first hardness, the first driving waveform including a first duration for driving and a second duration for resting; and operating the adjusting unit to select to apply a second driving waveform to the pulsating flow generation unit, when the biological tissue has a second hardness harder than the first hardness, the second driving waveform being different from the first driving waveform.