These are pen-like insulin delivery devices. They look very similar to an insulin pen, but do not have a needle. They deliver a small jet of insulin under high pressure at the push of a button. Once it is loaded to the desired dose, it has to be placed at the site against the skin. The trigger should then be pressed. This changes the insulin into a vapour form that penetrates the skin. Within a second the insulin gets into the subcutaneous tissue under great force.
Thus, unlike a pen, there is no puncture of the skin involved, and this insulin is delivered in the subcutaneous region. Certain cleaning instructions have to be strictly followed to maintain sterility. The jet injector should be cleaned with a damp cloth from the outside. This device should also be stored at the desired temperature.
- It is less painful since a needle is not used
- It has better acceptance among patients than the pen.
- It can be carried anywhere.
- Disposing the pens or needles is effortless as there are no needles.
- It is fairly expensive
- It cannot be used by slim people or by the visually impaired individuals
- It may cause bruising in some individuals
- It is not recommended for those taking anti-coagulants, or for those on dialysis or individuals with hemophilia
- Some feel that it causes more pain than regular needles
- Sterilizing and preparing for the dose is time consuming