Insulin Pump An insulin pump is an insulin-delivering device that's used by some people with diabetes. A small battery-operated device that can be worn on a belt or put in a pocket, it's connected to a narrow plastic tube that's inserted just under the skin and taped in place. People who use the pump program it to deliver insulin continuously throughout the day and to release extra doses of insulin to handle rises in blood sugar (after eating, for example). Back to Articles Related Articles Note: All information is for educational purposes only. For specific medical advice, diagnoses, and treatment, consult your doctor. © 1995-2021 KidsHealth®. All rights reserved. Images provided by The Nemours Foundation, iStock, Getty Images, Veer, Shutterstock, and Clipart.com.