Technology for injecting laser drugs is not painful

A group of scientists from Seoul National University (South Korea) said they have developed a new injection method that uses lasers to turn drugs into tiny rays through the skin without causing pain. for patients.

According to Jack Yoh, professor of mechanical and aerospace engineering, the system is a combination of solid lasers that use Yttrium Aluminum Garnet (YAG) crystal with wavelength of 2,940 nanometers with small transducers available. contains liquid medicine inside, accompanied by a water tank that acts as a conductor. Each laser pulse is only 250 milliseconds long, creating a vapor in the conductor. The pressure of the bubble will tighten the diaphragm between the solution of the drug and the water, causing the drug to be emitted in the form of a small ray of 150 micrometers, equivalent to the diameter of a hair.

Professor Yoh said, because the pressure of the thrust is higher than the tension of the skin, the drug can penetrate directly under the skin without causing pain like using a conventional needle. Experts conducted tests on mice and pigs, and found that the drug could penetrate deep into the skin a few millimeters without damaging the tissues. In addition, "laser injections can better control the dose and penetration of the subcutaneous drug better," Professor Yoh said. He is currently working with a company to produce cheap clinical products.

Reference: Daily Mail