What are the advantages and disadvantages of a blunt needle

1. Advantages
Injection level control is relatively simple during operation. It has no edge and no edge. It has strong elasticity. It can walk through the loose tissue of subcutaneous and periosteum with very accurate layers. It is not easy to penetrate into muscles. Compared with the sharp needle longer, up to more than 5cm, even more than 10cm, used for forehead and other large areas of the fan, cross filling, less pinholes, easier to lay evenly.
2. Disadvantages
There's no way to administer a skin injection. Blunt needle forced breakthrough to form the surrounding tissue tear, the pain is strong, and may pull off the surrounding blood vessels, may also cause tearing nerve end fibers. If the poor quality blunt needle is rough around the needle hole, it may scratch the blood vessel during the puncture. The inner diameter is much thicker than the sharp needle, and the injection is more smooth. Under the same operating pressure, the injection amount per unit time is several times that of the sharp needle. If the operation is improper, it is easy to inject too much in a certain local area.
To sum up, the difference between blunt needle and sharp needle for hyaluronic acid injection is mainly due to the difference in the size of local wound and recovery time. Sharp needle is mainly a kind of syringe with relatively fine hardness, which is also relatively small in skin damage to patients and relatively fast in recovery. The advantage of a blunt needle is that there is no need to change the needle, it is easier to operate, and it costs less. In the hyaluronic acid injection must go to the regular hospital for injection, after injection try not to let the wound touch water to avoid infection, but also gently massage local absorption.