by J. D. Stone

Created on: August 26, 2010   Last Updated: August 28, 2010

Diabetes infusion sets have become a familiar, but not completely understood, component of the insulin pump delivery system. The infusion set consists of three components, a self inserted infusion cannula or needle, a connector, and infusion tubing. This is used along with the insulin reservoir to provide a containment/dispensing unit for the insulin pump. Often ignored when considering the purchase of an insulin pump the infusion set will determine the difference between a life altering experience and a daily headache. Different types of infusion sets are used for different types of bodies and life styles. This article will answer three questions. What insulin infusion set features should you consider? What types might work well for your body? Why does it matter?

Each infusion set is distinguished by individual combinations of material, length, needle gauge, and insertion method. The first feature to consider should be the material used. Infusion sets use either metal or Teflon materials. Metal infusion sets are designed to be inserted straight in, much like the insulin syringe, and are often the easiest to use. Made of a fine gauge, they are very comfortable to wear and are reliable when used properly. The Teflon infusion sets also use a metal needle but the needle is removed after insertion, leaving behind a flexible cannula. Teflon sets often work better when inserted at an angle and by hand, as opposed to using an inserter. Also comfortable to wear, they are a popular choice for the novice pump user.

Length is another important feature to keep in mind. With Teflon infusion sets the length of the Teflon cannula can determine the reliability of the set. The longer cannula tends to be more reliable, especially with overweight patients. Tube length is dependent on the individual using the set. Recommended metal needle lengths are between 6mm (infants) to 12mm (adults), while recommended Teflon cannula lengths vary between 13mm and 17mm. Common sizes for infusion set tubing are 24 inches, 31 inches, and 42 inches.

Needle gauge determines the size of the hole left in the skin, ease of insertion, and it also contributes to the comfort of the set for the wearer. When exploring options for infusion sets keep in mind that the higher the gauge, the finer the needle, and in most cases the greater the comfort.

Insertion methods, while limited, can contribute greatly to the comfort and ease of use experienced by the patient. Insertion methods are straight-in, angled,

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