How Does The Hypodermic Needle Operate

When the hypodermic needle is injected, the injection site should be selected first, and then iodophor should be used for disinfection and wipe. Tighten the skin at the injection site with one hand, hold the syringe in one hand, fix the needle plug with the index finger, insert the needle into the skin at an Angle of 30-40 degrees between the needle and the skin, release the hand holding the skin, and pump the piston. If there is no blood return, slowly inject the drug into the body. Press the injection site.