Infusion Pump

Overview

A volumetric infusion pump delivers fluids, medications, blood products, or nutrition to a patient at a precisely controlled rate and total volume. It drives a disposable administration set rather than touching the fluid directly, and it watches that delivery with independent sensors so that over-infusion, occlusions, and air bubbles are detected and stopped. A drug library enforces dose limits to reduce programming errors.

Fluid is moved by the Peristaltic Mechanism, a linear peristaltic pump whose stepper-driven fingers press sequentially on a segment of the IV tubing, milking a fixed volume downstream with each cycle. The disposable IV Administration Set is the only fluid-contacting part, loaded into the door so the mechanism acts on it from outside, which keeps the fluid path sterile and single-use.

How it works

Delivery is supervised by the Sensor Suite: upstream and downstream pressure sensors detect occlusions and a closed clamp, an ultrasonic air-in-line detector catches bubbles before they reach the patient, and a door sensor confirms the set is properly loaded. The Main Control Board runs the rate calculation, drives the motor, and applies the drug-library limits, while an Safety Monitor Board independently watches motor motion and the sensor signals and can halt the pump if the primary controller misbehaves, a deliberate two-channel safety architecture.

The clinician programs rate, volume, and drug on the User Interface, a touchscreen and keypad with an audible-visual alarm. Power comes from the Power Supply supply, a medical-grade unit with a backup battery that keeps the infusion running during transport or a mains interruption. The pump mounts to a pole through the Enclosure clamp, and a barcode scanner and nurse-call output integrate it into bedside workflow.