This relates to the level sensing device designed for medical aspirator, the aspirator equipped with a level sensing device bojobyeong When the fluid flows into the interior of the body by a predetermined amount or more to stop the operation of the vacuum pump to remove the fluid inside the aspirator bojobyeong. To this end, the suction pipe designed the body fluid generated from the affected part of the patient (10) is coupled to the container 20, the suction hose 120 is again withdrawn from the vessel 20 is connected to a suction apparatus bojobyeong 100, aspirator bojobyeong withdrawn from the discharge hose 100, 130 has a vacuum pump ( is connected to the 30) in the suction apparatus for sucking the medical fluid by the negative pressure, bojobyeong aspirator 100 is plug 111 and on the upper side of the cover for airtight body 110 in the form of an open top , the plug is connected respectively to the end of the suction hose 120 and the exhaust hose 130 to the inside of the barrel body 110, the lower end of the stopper 111, the check valve 140 is installed as well as stoppers 111 the upper side of the body through the 110 positive electrode 210 of the metal bars to the inside of the negative electrode 220 is inserted, positive electrode 210 and negative electrode 220 is the upper side of the stopper 111 With this, each exposed terminal cap (212,222) is isolated from operators is connected to a controller 230 electrically, if the controller 230 includes a positive electrode 210 and negative electrode 220 are electrically short circuit occurs, the vacuum pump 240, is configured to stop the operation.본 고안은 의료용 흡인기의 수위 감지장치에 관한 것으로, 흡인기 보조병에 수위 감지장치를 장착하여 몸체의 내부로 체액이 일정량 이상 유입되면 진공펌프의 동작을 중지시켜 흡인기 보조병 내부의 체액을 제거할 수 있도록 한다.이를 위해 본 고안은 환자의 환부로부터 발생된 체액을 흡인관(10)이 용기(20)에 연결되고, 용기(20)로부터 또다시 인출되는 흡인호스(120)가 흡인기 보조병(100)에 연결되며, 흡인기 보조병(100)으로부터 인출된 배출호스(130)가 진공펌프(30)에 연결되어 음압에 의해 체액을 흡인하는 의료용 흡인기에 있어서,흡인기 보조병(100)은 상부가 개방된 형태의 몸체(110)의 상측에 기밀을 위한 마개(111)가 씌워지고, 마개에는 흡인호스