The present invention provides a kind of disposable saliva aspirator, and using single plane, the design of double leaf shape plate, floating on interior blade face, protrusion is a series of to surround the arcuate ribs put fold among it.Tab and notch are arranged around center and engage the plate.Distal tip is combined by the raised pads dovetail wedge-shaped arrangement of the distal tip in each plate.Proximally and distally via keeping operational contact by the suction force by device.The rib forms peripheral passage.Prolong capable slot guiding imbibition along the linear axes of described two plates and residue is entered by the channel in suction tube.It is along inside cheek, removing intraoral visual impediments in the arrangement of oral area.Delivery pipe is connected to around oral cavity joint on outer cheek.Once described device is correctly placed in the mouth of patient, it can remove from and dental assistant is needed to carry out suction operation in various surgical procedures.
