Abstract: The present invention relates to an air valve, including a valve body, an air valve adjusting pipe, an adjusting bolt, an airtight ring and a screw cap. With the geometric shapes of the air valve adjusting pipe and the adjusting bolt, the airtight ring installed onto the adjusting bolt is in contact with the internal wall of the air valve adjusting pipe to achieve a totally airtight effect and adjusting the level of airtightness.

Abstract: The present invention discloses an air valve adjusting switch assembly including a valve body, an air valve adjusting pipe, an adjusting bolt, an airtight ring and a screw cap. With the geometric shapes of the air valve adjusting pipe and the adjusting bolt, the airtight ring installed onto the adjusting bolt is in contact with the internal wall of the air valve adjusting pipe to achieve a totally airtight effect and adjusting the level of airtightness.

Abstract: A single control button type automatic infusion pump comprised of a circuit board, a motor pump, a three-way connector, a buzzer and a power adapter is disclosed. The circuit board has a controller to control the operation of the motor pump and the buzzer and a sensor to detect the pressure or status of the infusion bag/nutrition bag and the three-way connector. The three-way connector is a connection interface for enabling the motor pump to increase or reduce the pressure of the external infusion bag or nutrition bag. By means of a single button design, the single control button type automatic infusion pump automatically controls the pressure of the infusion bag/nutrition bag and detects its operation.

Abstract: A medical fluid aspirator, which includes a barrel attached with a suction tip, a tapered isolation sleeve detachably fastened to an inside connection tube inside the barrel and sealed with a gasket ring, an inner filter tube suspending in the isolation sleeve and tightly fastened to the rear side of the isolation sleeve for removing waste solid matters from waste fluid passing from the suction tip through the inner filter tube during the surgery, and an adapter that connect a suction tube to the rear side of the inner filter tube.