An infusion set is a medical device used to deliver fluids, such as medications or fluids for hydration, directly into the body. It consists of several components, including a hollow plastic tube called a cannula, a connector, and a patch or adhesive to secure the set to the body.

The cannula is a small, flexible tube inserted into the subcutaneous tissue (under the skin) to provide access to the bloodstream. It usually has a small, tapered needle or a blunt plastic tip to aid insertion. The connector is a junction that connects the cannula to the tubing, allowing fluids to flow through the set.

The tubing is a flexible plastic tube that carries fluids from a fluid source, such as an intravenous (IV) bag or a pump, to the cannula. It may have features like flow regulators or clamps to control the rate of fluid delivery. The tubing is often transparent, allowing healthcare providers to monitor the flow of fluids.

To secure the infusion set to the body, a patch or adhesive is used. It is typically made of a hypoallergenic material and is designed to keep the cannula in place and prevent accidental dislodgement.

Overall, an infusion set enables the safe and controlled delivery of fluids into the body, allowing for various medical treatments and therapies, including intravenous medication administration and continuous insulin infusion for diabetes management.