How often should the needle of the Insulin pen be changed

The needle of the Insulin pen is a necessary device for subcutaneous insulin injection. In principle, a needle should be replaced every time it is injected. However, in clinical practice, some patients consider the economic situation, or feel that this is a waste. A needle is repeatedly used for many times, or even replaced until the needle becomes blunt and bent. This situation is likely to cause some adverse reactions, such as increased pain Needle hole infection or even needle breakage under the skin.
So it is recommended to change the needle for each injection. If the needle is not replaced in a timely manner due to certain reasons, the maximum usage time of a needle should not exceed 3 days. In addition, before each subcutaneous injection, it is necessary to check whether the needle is unobstructed. Usually, after adjusting the insulin dosage to 1-2 units, press the injection button. If there is a small amount of insulin leakage from the needle, it indicates that the needle is unobstructed. If there is still no insulin leakage after exhaust, the needle should be checked in a timely manner. If there is a discount, it should be replaced in a timely manner.