Medical Portal

Scientists from the Californian universities of Santa Barbara and Berkeley and employees of the Californian firm StrataGent Life Sciences have developed a new system for hypodermic injections, instead of a usual syringe. This device works without needles, does not leave appreciable damages on skin and does not cause painful feelings.
Alternative systems of medicines injection have been invented more than 50 years ago. However, they also were not effective because of arising feeling of a pain. The reason is that the preparation at such injection penetrated deeply into a skin, irritating nociceptors.
The new syringe is also created for injections with the help of microjets, however this disadvantage is eliminated: developers suggest to make the speed of a jet very high - more than 100 meters per second.
To minimize mechanical influence on receptors it was decided to reduce diameter of a jet and volume of the liquid. Due to this the stream of substance, punching the skin, gets only to superficial layers (on the depth approximately 200 micrometers).
The experiments carried out on laboratory rats and on human tissue samples have shown appreciable efficiency of the invention at insulin injections. But for the time being nothing is informed about the prospects of application of the new device in the medical practice.