Needle-free injection technology was born in Europe and the United States a hundred years ago, and domestic self-developed needle-free insulin syringes have also been marketed. Domestic needle-free technology is developing towards small size and good injection effect. Needleless syringes are divided into power devices, including spring mechanical power, CO2 gas power and electric power; according to ampoule capacity, there are three specifications of 0.3ml, 0.5ml and 1.0ml; there are miniature pen type and hand-held gun type in appearance size , The hand-held gun type is mainly pneumatic, used for immunization injection of group groups, and then subdivided into two types: human use and veterinary use. The miniature pen type is mainly powered by springs and is widely used in insulin, interferon, vaccines and other small quantities Injection of liquid medicines. Also suitable for personal home use.

Working principle
The principle of the insulin needle-free syringe is to generate a strong power through the release of the spring in the syringe to quickly push the liquid medicine in the ampoule at the front end of the syringe. It penetrates the epidermal cells, penetrates into the subcutaneous tissue, and completes the injection. It has the advantage of eliminating the fear of needles and pain in the injector.



Injection needle