RESUMO
Objective To develop a kind of special einbrand for clinical sputum suction. Methods The einbrand was composed of two parts: a body penetrating the mouth and an external wing, which was made of self-lubrication paraformaldehyde. The body was small in size and easy to be put in the patient's mouth, and could effectively press the tongue.The bite surface was divided into two sections of plane and elliptic surface,the plane section facilitated the biting of the patient while the elliptic surface assisted to discharge the einbrand. The external wing executed positioning while the einbrand was put into the mouth,which could be held by one single hand for manipulation.Results Clinical trials proved that the einbrand was embedded into the mouth easily with the mouth opened 10 mm,that the einbrand was bitten by the patient in case the bite force was existent,that the einbrand was discharged when it was drawn out 35 mm or so,and that the einbrand could withstand the pressure higher than 12 kg/cm2(1 200 kPa)with no deformation.Conclusion The einbrand designed can be satisfactorily used for clinical sputum suction.