How Does an Insulin Pump Work? One of the best ways to tightly control  your insulin levels is with an insulin pump. An insulin pump constantly delivers insulin to the diabetic's body, the amount of which can be programmed by the wearer. The amount of insulin delivered can be adjusted to account for exercise and other activities. These articles on how insulin pumps work not only covers the basics, but gives a preview of what current technology is developing to make life even easier...