Health tech

Spray lights you up when you've got poison ivy

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

How a smart bra could one day outdo the mammogram

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

Drill, dentist, drill -- with tool that replaces buzzing with ballads

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

Everyday office paper tests for pregnancy, medical conditions

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

Hashtag 'scalpel': Hospital to live-tweet ear surgery

If you're on Twitter, you've probably followed a live-tweeted gadget reveal or political convention or Olympics event or Mars rover landing in your day. You probably have not, however, followed a live-tweeted surgery. That could change tomorrow.

As Dr. Douglas Backous performs a cochlear implant operation at Seattle's Swedish Medical Center, his moves will be tweeted live, with still photos from inside the operating room posted to Instagram (presumably not by Backous himself). … Read more

Researchers unveil ultra-thin electronics that dissolve in body

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

Nuked beers safe to drink following U.S. government tests

When a nuclear apocalypse comes calling, the first thing most of us will yearn for is a drink. And thanks to our government's foresight and willingness to bomb stuff, you can rest assured that the surviving cans of PBR and Bud Light found in your now flattened local 7-Eleven will be safe to chug.

This is actually no joke. Alex Wellerstein, an American Institute of Physics science historian who also runs a blog about nuclear secrets, recently posted some old government documents and photos from "Operation Teapot."

The subtitle to this 1955 report (PDF) on the experiment undertaken at the Nevada Test Site says it all: "The effect of nuclear explosions on commercially packaged beverages."… Read more

See how healthy your lungs are -- just blow into your phone

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

Smart glove gives voice to sign language gestures

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

'Go Fara' aims to revolutionize bike commutes

For many urban dwellers who live close to work, commuting by bike is like eating vegetables. You know you should, but sometimes you just want the burger and fries.

Industrial designer Adam Taylor, who is working toward a master's degree in future design in England, has devised a system that he thinks will help motivate commuters to pedal to the office. The two key features are the system's self-powered smart card and the bike itself, which is a beauty.

On the blog Bicycle Design, Taylor says he envisions the bike, which he calls "Tim," and the system, which he calls "Go Fara," to be bought in bulk by major corporations that institute a "green employee of the week" rewards program. Using the smart card, the employer has access to mileage and time stats to reward the highest achievers.… Read more