The advantages and disadvantages of sharp needles

advantage:

1. It can be flexibly switched and fine-tuned on multiple planes and multiple injection points;

2. The sharp needle is thinner, if used properly, the level is accurate, and the tissue damage caused by it is smaller;

3. All kinds of injection materials are originally equipped with sharp needles, and there is no need to replace the needles, which is easy to operate.

disadvantage:

1. Too sharp, there may be a risk of puncturing blood vessels;

2. The length is usually short, and sometimes it is difficult to inject evenly when injecting a large area;

3. There are many needle insertion points, and each needle insertion point has the risk of damaging small blood vessels, which may cause surface bruises;

4. The new hand-held needle is unstable, and it is more likely to damage the surrounding blood vessels or sensitive organs such as eyes.