Abstract: A respiratory droplet suction device includes an air inlet end and an exhaust end. A plurality of filtering devices are arranged between the air inlet end and the exhaust end. The filtering device is provided with a bacteria filtering screen for adsorbing bacteria and an ultraviolet sterilization lamp for inactivating the bacteria. The filtering device includes a first side wall and a second side wall. The first side wall is connected to the air inlet end, and the second side wall is connected to the exhaust end. The air entering from the first side wall is filtered by the bacteria filtering screen and discharged through the second side wall. The ultraviolet sterilization lamp is arranged corresponding to the bacteria filtering screen. A respiratory droplet filtering apparatus includes the respiratory droplet suction device, and a respiratory droplet electric suction system includes the respiratory droplet filtering apparatus are further provided.

Abstract: A respiratory droplet suction device includes an air inlet end and an exhaust end. A plurality of filtering devices are arranged between the air inlet end and the exhaust end. The filtering device is provided with a bacteria filtering screen for adsorbing bacteria and an ultraviolet sterilization lamp for inactivating the bacteria. The filtering device includes a first side wall and a second side wall. The first side wall is connected to the air inlet end, and the second side wall is connected to the exhaust end. The air entering from the first side wall is filtered by the bacteria filtering screen and discharged through the second side wall. The ultraviolet sterilization lamp is arranged corresponding to the bacteria filtering screen. A respiratory droplet filtering apparatus includes the respiratory droplet suction device, and a respiratory droplet electric suction system includes the respiratory droplet filtering apparatus are further provided.

Abstract: Embodiments of the present invention provide a dental treatment machine for children. The dental treatment machine may include a base, a cushion and a backrest, where the vertical distance between the base and the cushion, the angle between respective planes of the cushion and the backrest, as well as the horizontal distance between the cushion and the backrest are selectively adjustable according to a child's figure. Preferably, the vertical distance adjustment between the cushion and the base is about 350-730 mm, the angle adjustment between the backrest and the cushion is about 0°˜68°, and the distance adjustment between the backrest and the cushion is about 0˜50 mm.

Abstract: Embodiments of the present invention provide a dental treatment machine for children. The dental treatment machine may include a base, a cushion and a backrest, where the vertical distance between the base and the cushion, the angle between respective planes of the cushion and the backrest, as well as the horizontal distance between the cushion and the backrest are selectively adjustable according to a child's figure. Preferably, the vertical distance adjustment between the cushion and the base is about 350-730 mm, the angle adjustment between the backrest and the cushion is about 0°˜68°, and the distance adjustment between the backrest and the cushion is about 0˜50 mm.