The insulin injection pen can be divided into an insulin injection pen and a refillable insulin injection pen. The insulin special injection pen is a disposable injection device prefilled with 3 ml (containing 300 u) of insulin. There is no need to replace the refill and discard it after use. The refillable insulin injection pen consists of an injection pen and an insulin refill. Once the insulin in the refill is used up, a new refill needs to be replaced, and the injection pen can be reused. However, the current use of the same brand of insulin injection pen can only be matched with the same brand of insulin, and there are some differences in its use.
The insulin injection pen is marked with a measuring scale, and the needle for the injection pen used is very small, so that the pain during the injection and the mental burden of the patient can be reduced. In addition, the insulin injection pen is easy to use and easy to carry, and is very suitable for the insulin treatment program for multiple times a day. However, because different insulins cannot be mixed, when different types of insulin are used, they are not freely proportioned. Unless premixed insulin is used, two injections are required separately, which has certain limitations.
