Bagaimana jarum vertikal untuk injeksi hipodermik bekerja?

Vertical needle insertion method: during injection, the left thumb and index finger lift the abdominal wall skin to form a fold, and the fixed needle is inserted vertically about 0.8-1.2 cm (the injection depth is determined according to the patient's fatness and thinness).

Compared with the traditional oblique needling method, the vertical needle insertion has less damage to the local subcutaneous tissue, is not easy to cause bleeding, the patient's pain is significantly reduced, the needle insertion speed is fast, the needle travels in the skin is short, and the damaged tissue is less, and it is not easy to damage the nerve endings or the nerves. Less peripheral damage.

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