5 is provided in a portion of a hollow core 6 39 of sonotrode 8 which is illustrated as a pipe rinsing agent supply line 5 is guided through connector 25 to a discharge region 10 thereof and then through suction line 6 rinsing agent supply line 5 exits suction line 6 through a branch part 12 and ends at a connecting port 16 connecting port 16 may be connected to a conventional rinsing agent supply not shown the rinsing agent supply line 5 discharge terminates interior to the tip 7 of sonotrode 8 to provide an unobstructed passage for gas flow at an exit opening 115 liquids and tissue residue can be suctioned away from the operating site via suction line means including suction line 6 specifically hollow core 6 39 of sonotrode 8 and suction line 6 are arranged in fluid communication through discharge region 10 of connector 25 suction line 6 terminates at connection 17 to allow connection to a conventional external suction line not shown the surgeon can turn the rinsing or suction devices on or off by means of a conventional switch not shown which is preferably operated with the foot a gas supply line 19 may be secured to an adapter 24 of hand held instrument 1 to provide a supply.