an infusion pump is a medical device used to accurately deliver liquid drugs into a patient's body. It consists of multiple parts, including a control panel, an infusion bag holder, a flow sensor, a pump body, and more. The working principle of the infusion pump is to pump the liquid medicine out of the infusion bag and deliver it to the patient through the tubing through the electric motor.

Infusion pumps have a variety of structures, but generally contain the following main components:

1. Control panel: The control panel on an infusion pump usually consists of an LCD screen and operation buttons. Through the control panel, the medical staff can set the infusion speed, set the infusion time, and monitor the parameters during the infusion process.

<span style="font-family: MicrosoftYahei, " microsoft="" font-size:=""">2. Infusion bag holder: The infusion bag holder is a bracket used to hold the infusion bag, which is usually designed as a height-adjustable structure to accommodate infusion bags of different heights. A drip rate counter will also be provided on the infusion bag rack to measure the number of infusion drops.

3. Flow sensor: The flow sensor is usually located between the pump body and the infusion tubing and is used to detect the flow rate of the liquid. It can monitor the drip rate of the infusion in real time by detecting the pressure of the liquid flowing through the sensor or the optical principle, and transmit the data to the control panel.

4. Pump body: The pump body is the core component of the infusion pump, including the mechanical structure and moving parts of liquid pumping. The pump body is usually composed of knobs or motor-driven mechanical structures that rotate in both forward and reverse directions, which can realize the function of forward and reverse delivery of chemical liquid.

infusion pump works as follows:

1. Set parameters: The medical staff can set the infusion speed, infusion time and other parameters through the control panel, and adjust them according to the patient's condition and doctor's instructions.

2. Load fluid: Hang the infusion bag on the infusion bag rack of the infusion pump, and connect the infusion tubing to the outlet of the infusion pump and the patient's intravenous access.

3. Start the pump body: Start the pump body by operating the buttons on the control panel. The pump body starts to work, and the infusion liquid is pumped to the inlet port of the pump body by rotating or motor power, and pushed to the outlet port.

4. Flow detection: The flow sensor of the infusion pump detects the drip rate or flow rate of the infusion in real time, and automatically adjusts the working speed of the pump according to the set parameters to keep the set infusion speed constant.

5. Alarm and monitoring: The infusion pump is equipped with a variety of alarm and monitoring functions, such as the infusion time has arrived, the infusion speed exceeds the set range, etc. When an abnormal situation occurs, the control panel will sound or display an alarm message to remind medical staff to deal with it in time.

Through the above process, the infusion pump can accurately deliver the drug solution to the patient, and realize automatic and accurate infusion management. It can reduce the error of human operation, improve the safety and reliability of the infusion process, and provide patients with better treatment results.