Electromagnetic energy storage type needleless injector

Abstract

The invention discloses an electromagnetic energy storage type needleless injector, which comprises an electric control device and an impact injection device, wherein the impact injection device comprises a cylinder barrel with an inner cavity, a front end cover fixedly arranged at the front end of the cylinder barrel, an impact armature movably arranged in the cylinder barrel along the front and back direction of the cylinder barrel, and an electromagnetic coil arranged in the cylinder barrel and used for driving the impact armature to move front and back when being electrified. The impact armature is subjected to energy storage of electricity, after the energy storage is carried out to a certain degree, the impact armature is instantly triggered, the initial acceleration is large, the idle stroke is greatly shortened, and the size of the needleless injector is reduced, and meanwhile, direct current is adopted in the needleless injector, so that safety voltage can be used, and the use is more convenient and safer. The needleless injector is simple in structure, small in size, light in weight and low in manufacturing cost, and can be widely popularized and applied.

Description

[0001] technical field [0002] The invention relates to an electromagnetic energy storage type needle-free injector. Background technique [0003] Needle-free injection technology is to inject liquid medicine directly into the body tissues in the form of ultra-fine, high-speed, and straight-line high-pressure jets without the use of needles, which solves a series of problems caused by traditional injections caused by needles piercing the body. , such as: pain, bleeding, infection, tissue damage, psychological stress of patients, etc.; at the same time, the distribution of drugs injected without needles in the tissue is more diffuse, which is conducive to the absorption of drugs, and the skin is not easy to harden after long-term injection. Therefore, needle-free injection technology has broad application prospects, especially for children's vaccination and diabetic patients. [0004] In the prior art, most of the needle-free injectors adopt an electromagnetic-driven struct...

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Problems solved by technology

[0005]Among the above two driving methods, the former driving method requires a long idle stroke due to the small initial acceleration, while the latter driving method requires The time is relatively short, even on the level of milliseconds, so to achieve the work required for the injection process, the power of the drive device will inevitably be large, and the volume of the injector will also tend to be large, such as the needle-free injection drive based on giant magnetostrictive materials. The device requires about 20kg of giant magnetostrictive material alone, and the giant magnetostrictive material is expensive, so the cost of the needle-free syringe is high, and the product cannot be popularized and used

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