The current will carry the medicine into the body
Last reviewed: 16.10.2021
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American scientists from the Massachusetts Institute of Technology (MIT) have developed a syringe that injects drugs into the human body without using a needle. The results of the work of Professor Ian Hunter and his colleagues are published in the journal Medical Engineering & Physics.
The action of the device is based on the Lorentz force, with which the electromagnetic field acts on a pointlike charged particle. In the middle of the syringe is a powerful magnet of small size, surrounded by a wire coil. The piston is attached to the coil, part of which is contained in the ampoule with the medicine.
Under the influence of the current, the coil forces the piston to move and pushes the drug out of the ampoule at a speed close to the speed of sound - 314 meters per second. A jet of liquid thick in a mosquito trunk permeates the skin and delivers the drugs to the tissue at the desired depth. To facilitate the adsorption of the drug, the flow rate after penetration under the skin is reduced.
Change the speed and pressure of the liquid, as well as the penetration depth of the drug can be made with the help of current. The authors of the development note that a wide range of adjustable parameters allows injections to be made even through the tympanic membrane.
Now scientists are planning to create a new version of the device, through which it is possible to introduce powder preparations.