Pentax medical became aware of a report on 09dec2019 stating, "while using the scope, suction automatically becomes active without pressing suction button.This symptom occurs intermittently.", involving pentax medical suction/balloon suction control valve, model of-b206/lot number unknown.Pentax medical asia pacific obtained the following information: "automatic suction" symptom is working without push suction valve (of-b206) and mostly right after using suction valve.It seems that after using suction valve the valve doesn't return to normal position.'silicone oil' was applied to the suction valve (of-b206).There is no serious injury or death of a patient or user reported.
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