Scientists invent a new needle-free syringe to give injections no longer pain. Scientists have developed a new method of injecting drugs without a needle. A high-speed high-pressure injector can be used to inject drugs through the skin into the body. This method may one day end the era of painful injections today. Scientists have unveiled the mystery of this needleless syringe. It is very similar to the injection device in the movie "Star Trek". It can inject various doses of drugs into different depths of the skin according to the pre-established procedure. For patients with "needle phobia", this innovative syringe will not cause pain to patients and may be very popular in the future. Usually, these patients do n’t even get the vaccine because of the fear of the needle. In the highly successful science fiction film series "Star Trek", spacecraft medical officer Leonard McCoy uses a needleless injection device to treat the wounded. Researchers say they have developed a similar device that can create a high-speed spray that penetrates the skin. It is said that scientists have been studying new jet injectors for some time, and this device is its representative improved version. These researchers say that this technique has many benefits, such as drastically reducing accidents that doctors and nurses accidentally pierce themselves when using needle syringes. In addition, some patients try to avoid the discomfort caused by regular injections of insulin and other drugs, and a needle-free injection device can help improve this situation and make these patients happily receive drug injections. Catherine Hogan, a member of the MIT research team, said: "If you are afraid of needles and have to self-inject frequently, then compliance is a problem. We believe that this needleless injection technique can allow patients with needle phobias Was completely freed. "Over the past few decades, scientists have developed various alternatives to hypodermic syringes. For example, nicotine patch, which can slowly penetrate the drug into the skin. But they can only release drug molecules small enough to penetrate the pores of the skin, which limits the use of drugs. But the MIT research team led by Ian Hunter developed a jet injection system that injects various doses of drugs into the skin at different depths in a strictly controlled manner. This design is based on a mechanical device called "Lorentz force actuator". This device is small but powerful, with a metal coil wrapped around it and connected to a piston in the ampoule that holds the drug. When energized, the current in this needleless syringe interacts with the magnetic field of the magnet to generate a powerful boosting force that pushes the piston forward, ejecting the drug through the ampoule nozzle at high pressure and high speed (almost close to the speed of sound in the air), and this The nozzle is as wide as the mosquito's pointed beak. The researchers found in the experiment that different skin types require a variety of corresponding pressures in order to spray a sufficient dose of the drug to the required depth. Hogan said: “It does n’t take too much pressure to give a vaccine to a child, but if it ’s my skin, it ’s different. We can decide the pressure needed for a needleless syringe as needed. This is what this new device does The charm. "" Medical Engineering and Physics "magazine reported the major results of this new research.
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