American scientists have invented a syringe without a needle

U.S. scientists have developed a syringe, injection drug use without a needle.

The results of Professor Ian Hunter and his colleagues at the Massachusetts Institute of Technology published in the Journal of Medical Engineering & Physics. effect devices based on the force with which the electromagnetic field acts on a point charged particle - the Lorentz force. Inside the syringe is a powerful magnet of small size, surrounded by a wire coil. In turn, the piston is attached to the coil, part of which is located inside the vials of medicine. Under the influence of the current coil drives the piston, "throws" of the drug vials at a rate of 314 meters per second - nearly the speed of sound. The jet of fluid from the mosquito's proboscis width "penetrates" the skin and delivers the drug into the tissue to the desired depth. In order to facilitate the adsorption of the drug, the flow velocity after penetration into the skin is reduced. Change the speed and pressure of the fluid, as well as the depth of penetration of drugs is possible by means of the current. The authors develop point out that a wide range of adjustable parameters makes it possible to inject even through the eardrum. "For the injection a child does not require the same high-pressure fluid, as an adult. When you use our device can be varied pressure, and this is its main advantage, "- quoted in the report the words of one of the sponsors of the development of Katherine Hogan. Now, scientists plan to create a new version of the syringe, with which, as injections may be injected powder preparations. researchers believe that new development will be useful not only for patients who for various reasons, are afraid of injections, but also employees of medical institutions. According to the Centers for Disease Control and Prevention USA, 385 000 hospital staff once a year suffer from accidental puncture needles.

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