Health Tech

I have not yet had the good fortune of getting poison ivy, and now perhaps I never will. A new spray that lights up in the presence of the oil that causes the rash might let me bail on that particular party should I ever be invited.

Rebecca Braslau, a professor of chemistry at the University of California at Santa Cruz, has concocted a nontoxic spray that goes fluorescent in the presence of urushiol, the oily sap on poison ivy leaves that can make life extremely unpleasant for you and your skin.

Braslau and colleagues describe their innovation in a recent issue of The Journal of Organic Chemistry. Their paper, titled "Urushiol Detection Using a Profluorescent Nitroxide," might just as well be called "Spray This Stuff on to Maybe Avoid Scratching Yourself Silly." … Read more

Those breast exams women are supposed to regularly give themselves in the shower are no joke. With one in eight women facing breast cancer diagnosis at some point, early detection -- most often in the form of simple self exams -- can be a literal lifesaver.

So First Warning Systems, a company founded in Reno, Nev., in 2008, is designing and testing a smart bra that is essentially a continuous exam, and that thus far appears to be more accurate that the somewhat controversial mammography.

The Breast Tissue Screening Bra incorporates a sensor that measures tiny temperature changes that occur as blood vessels grow and feed tumors, which the company says grow for an average of 12 years (to 4 centimeters in diameter) before being surgically removed.

That sensor, meanwhile, communicates with pattern recognition software to help spot possible tumors long before a hand or mammogram likely would.… Read more

Feeling a touch of terror as the dentist moves the drill closer to your face? Perhaps some tunes emanating from the tool will assuage your anxiety.

That's the idea behind Dr. Dhanni Gustiana's musical drill. The dentist from Java, Indonesia, modified a regular dental drill to play MP3s instead of its usual ominous high-pitched buzzing. The drill even takes requests, though I'd highly recommend staying away from Slayer or Cannibal Corpse. … Read more

Of all the kids who go to emergency rooms in the U.S., about 6 percent are there because of stomach pains, according to researchers analyzing a large national database.

And while that 6 percent rate has held steady over the past decade, with anywhere from 2 percent to 8 percent being diagnosed with appendicitis (the number fluctuated without any clear pattern), the percentage of kids getting CT scans has jumped from 0.9 percent to 15.4 percent between 1998 and 2008, the researchers wrote in the current issue of the journal Pediatrics.… Read more

Researchers are developing a special process meant to replace the custom "paper" found in home pregnancy and other tests with plain old office paper -- a way of creating ultracheap methods of medical testing that could quickly diagnose pregnancy, malaria, diabetes, and more.

Ultimately, the idea is to replace the current standard, which relies on a membrane called nitrocellulose that sticks to molecules of interest, with cheap and ubiquitous paper that can stick to a whole fleet of chemicals, including DNA, antibodies, and sugars. And a University of Washington researcher wants to make the already cheap tests even … Read more

Old McDonald had a farm. E-I-E-I-O. And on his farm he had a cow with a wireless intravaginal temperature sensor. E-I-E-I-O.

Swiss farmers are helping to test a new system that sends them alerts when their dairy cows are in heat. Stresses and supplements have led to cows showing fewer visual signs of being in heat. That's where technology is stepping in.

The system from Swiss company Anemon consists of a wireless sensor (installed where the sun don't shine) and a transmitter box that attaches to the cow's collar. An accelerometer in the transmitter collects activity data.

When the cow reaches an optimal temperature (also know as "feeling frisky"), the transmitter text messages the farmer to arrange for a bull rendezvous or artificial insemination. … Read more

The same researchers who last year developed "electronic tattoos" that bend and stretch on skin are now unveiling similar ultra-thin electronics, only these dissolve when their job is done.

Made of silicon, magnesium, and magnesium oxide and surrounded by a protective layer of silk, these "transient" electronics aren't built to last but rather to melt away and, in the process, reduce the need to pass or surgically remove tiny medical implants, researchers from Tufts and the University of Illinois write in the current issue of Science.

The researchers -- who have begun using their devices … Read more

Today, patients with chronic lung conditions such as cystic fibrosis or asthma can't easily monitor how their airways are doing. Instead, they have to go to the doctor's office and blow into a special device called a spirometer as hard and fast as they can.

So for the past two-plus years, grad students at the University of Washington in Seattle have been working to develop an app that can measure lung function just as accurately but without the need for additional hardware. (Existing apps either require hardware or are for entertainment purposes only.)

In other words, they've been trying to turn a smartphone into a spirometer.… Read more

I have a very basic grasp of sign language, including the alphabet and few simple words like "thank you," "snake," and "chicken."

The last time I spoke with someone who was speech impaired, we resorted to a scrap piece of cardboard and a pencil to get our messages across. A new invention may help break down those barriers.

The EnableTalk smart glove recognizes sign language gestures and sends them for text and voice translation to a smartphone or other device. … Read more