sandblasting machine clogging waterways solution

Pen sandblasting machine clogging waterways has been a vexing problem. A lot of doctors do not know how to go through the waterway, because his eyes are not straight water, so use end ligation is not feasible.
Solution, take a disposable Dental Autoclave probe, cut with pliers paragraph inserted in front of the pores which sandblast head with a disposable syringe suction head Shui aligned sandblast a treatment table with recoil or trachea ( Pressure should be large) for recoil to solve the problem.