Insulin needleless syringes (also known as insulin needleless injection systems) are devices that are injected by pressure. Its principle is to generate strong power through the release of the spring in the syringe, quickly push the medicinal solution in the ampoule at the front of the syringe, and the medicinal solution passes through the epidermal cells in the form of a "liquid needle" through the microhole with a diameter of 0.17mm at the front of the ampoule , Penetrate into the subcutaneous tissue and complete the injection. It has the advantage of eliminating the fear of the needle and the pain.


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