The
saliva drainage device comprises a
left cheek cotton piece, a
right cheek cotton piece, a first gravity sensor, a second gravity sensor, a first drainage tube, a second drainage tube, a first
electromagnetic valve, a second
electromagnetic valve, a suction pump, a collecting tube, a
liquid storage bag and a controller. The
left cheek cotton piece and the
right cheek cotton piece are attached to the positions of the
cheek mucosa respectively, the gravity sensor obtains the
side lying direction, the corresponding electromagnetic valves are started according to instructions of the controller, and single-side
saliva drainage and suction are achieved. The
liquid storage bag is convenient to fix through
viscose, the gravity sensor is provided with a waterproof sealing film and a miniature
lithium battery, and a
lithium battery in an outer interlayer of the suction pump supplies power to a controller and the like. Compared with the prior art, the drainage side can be automatically switched according to the
body position of a patient, the problems that a traditional drainage mode lacks adaptability, drainage is inaccurate and the like are effectively solved, the intelligence degree and efficiency of
saliva drainage are improved, and a better solution is provided for saliva drainage requirements in
medical care.