The invention relates to a negative-pressure suction-type
dental pad. The
dental pad comprises a baffle and a groove. The
lower half part of the
dental pad is designed to be arc according to the shapeof a tracheal
catheter in an
oral cavity. A one-way vent hole is formed in the groove, a large gap is formed between the groove and the tracheal
catheter, air is discharged through force pressing, the gap is obviously reduced, the interior of the groove is in negative pressure, and accordingly the tracheal
catheter is sucked on the dental pad. Then, an
injector is used for pumping air, and the negative pressure is increased for reinforcement and fixing. According to the unique negative-pressure suction-type design, the higher the negative pressure is, the firmer fixing is, and through negative pressure, the
diameter of a ventilated cavity of tracheal catheter can become large. For a common fixing method, by adopting
positive pressure, the catheter is possibly extruded to be flat, and thecavity becomes small. According to the unique negative-pressure suction-type design, the dental pad is directly sucked to the tracheal catheter, the volume of occupying the
oral cavity is small, the pain of a patient can be reduced,
nursing for the
oral cavity is conducted conveniently and can be conducted just through one person, and the labor is saved. The negative-pressure suction-type dental pad has the advantages of being simple and reasonable in structure, low in cost, firm in fixing and powerful in function.