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MIT engineers use ultrasound for improved topical drug administration (video)
Ultrasound is likely most often associated with sonograms, but some MIT engineers are poised to change that. By using two separate beams of inaudible sound waves (one at low-frequency, the other high) the team were able to increase the permeability of skin, in a bid to improve the efficiency of transdermal drug delivery. The technique works thanks to the waves exciting bubbles in a fluid (such as water), forcing them to swell and move chaotically. Once the bubbles reach a certain size they implode, sucking the surrounding fluid into the void. This process creates micro-jets of liquid, which cause miniscule tears in the skin, allowing it to (painlessly) absorb chemicals more effectively. In practice, a pre-treated area of skin is then covered with a patch containing the correct dose of drugs -- but don't worry, the skin is said to grow back just a few hours later. Up until now, research into ultrasonic administration of drugs has concentrated on low-frequency waves, because the higher end of the spectrum doesn't have enough energy to pop the bubbles. Higher frequencies do, however, help create more of them and also limits their lateral movement. By using both high- and low-frequencies, the MIT engineers found this produced better over all results, by not only increasing the skin's uptake of the medicine, but also increasing the number of drugs that can be delivered this way. With pretty much anything that is usually delivered in capsule form being on the cards, this could make the administration of many popular drugs much more convenient and / or effective. Also excellent news for those who really don't like needles.
Nokia applies for skin-friendly haptic material patent, hints at notification system
If US patent application 20120062371 is to be correctly understood, Nokia has at least thought about a topical haptic notification system. The first claim covers "An apparatus comprising: a material attachable to skin, the material capable of detecting a magnetic field and transferring a perceivable stimulus to the skin, wherein the perceivable stimulus relates to the magnetic field." It then goes on to clarify its relation to telecommunications messages and communications indications. Based on ferromagnetic powder, the material would respond to magnetic fields and vibrate in response. Our guess is that this could be used as a notifier that could be "painted" onto the skin, and although there is mention of the word tattoo, we're hoping that's just part of the required legalese. But alas, until it's granted, it's just a subject of our curious imaginations. Those curious, can read more at the source.[Thanks to everyone who sent this in]
