目前临床使用的吸引器是由贮液瓶、密封瓶塞、吸液管、负压源连接管、贮瓶固定架构成的。其存在的缺点是：贮液瓶与瓶塞的连接不大牢固，操作使用中往往会发生松动而影响吸液效果；若瓶塞塞得过紧又常常给开启带来困难；贮液瓶每次用后都必须倒去吸引液并进行消毒，费时又费力 At present, the aspirator used clinically is composed of a reservoir bottle, a sealed bottle stopper, a suction pipe, a negative pressure source connection pipe, and a bottle holder. The disadvantages are: the connection between the liquid storage bottle and the bottle stopper is not strong, and the looseness of the liquid storage bottle and the stopper are often affected during operation and use; if the bottle stopper is too tight, it often brings difficulties in opening; the liquid storage bottle is After the second use, the suction solution must be poured and sterilized. It takes time and effort.