Comfortable sputum suction device for department of pediatrics

The comfortable sputum suction device comprises a needle cylinder, a cover disc is arranged at the top of the needle cylinder, a through hole is formed in the position, close to the center, of an inner cavity of the cover disc, a piston rod is movably connected to an inner cavity of the through hole, the upper end and the lower end of the piston rod penetrate through the inner cavity of the through hole, and a grab handle is fixedly connected to the top end of the piston rod. A piston plate is fixedly connected to the bottom end of the piston rod, the side wall of the piston plate is movably connected with the inner wall of the needle cylinder, L-shaped connecting rods are fixedly connected to the positions, close to the center, of the left side and the right side of the cover disc, fixing cylinders are fixedly connected to the long ends of the L-shaped structures of the two L-shaped connecting rods, and a fixing hole is formed in the position, close to the center, of the bottom end of the needle cylinder. Th