Health tech

With many of us spending more than 40 hours per week at work, you might be having a hard time fitting exercise into your daily routine, but a company called Revo Innovations thinks it has the solution with a contraption called the FitDesk.

The FitDesk is a foldable stationary bike that brings the gym to your office. Instead of traditional handlebars, the bike features a padded deck, where you can place your laptop and continue to work, surf the Web, or play games (in case you're not a treadmill fan), all while pedaling away the calories. Resistance controls also allow you to intensify your workouts as you pore over those Excel spreadsheets. … Read more

Driven by the oft-overlooked needs of the visually impaired, Selene Chew wanted to develop something that would improve their social lives. She came up with the concept of BlindSpot, which looks like a normal white cane, but integrates a mobile phone.

You could say the device--Chew's final-year industrial design thesis project at the National University of Singapore--is a smart cane.

Instead of a screen, users navigate the menu with a tactile navigator and listen to audio cues via a Bluetooth headset. Both the headset and phone can be charged wirelessly.

Like most of today's smartphones, BlindSpot has built-in Wi-Fi, 3G, and GPS connectivity. … Read more

If you'd like a better understanding of what it takes for sperm to be considered fertile, go grab your measuring spoons and look at the quarter teaspoon. Roughly that amount of ejaculate should boast anywhere between 20 million and 150 million sperm. Anything less than 20 million and fertility just might be an issue.

So Loes Segerink, a researcher at the University of Twente in the Netherlands, has developed a "fertility chip" that can accurately count one's sperm concentration as well as measure its mobility (when discussing sperm the synonym "motility" is often used). What's more, the test can be taken at home, with the ejaculate being, ahem, collected in a more private environment.

While simple home tests are already commercially available, the concentration readings are, well, simple, and indicate only whether sperm concentration is above or below that 20 million mark. But one man's sperm concentration of 19 million is certainly more fertile than another man's count of 1 million.

Segerink, who will be defending her doctoral dissertation in November, says the sperm flows past a liquid-filled channel on the chip beneath electrode "bridges." When cells pass beneath these bridges, a brief fluctuation in electrical resistance occurs. By counting these events, the chip is counting sperm.… Read more

Researchers at Stanford are developing new sensors so flexible and pressure-sensitive that they could be used to make touch-sensitive prosthetic limbs, pressure-sensitive badges, and more.

By incorporating a transparent film of carbon nano-springs, the sensor "can register pressure ranging from a firm pinch between your thumb and forefinger to twice the pressure exerted by an elephant standing on one foot," says postdoctoral researcher Darren Lipomi, co-author of a paper published October 23 in the journal Nature Nanotechnology. "None of it causes any permanent deformation."

The team built those nano-springs by airbrushing nanotubes (which are in liquid … Read more

NEW YORK--Motorola is taking on Apple's iPod Nano with the Motoactv, an Android-based media player designed specifically for people who work out.

The company announced the new device at a press conference here Tuesday. Like the iPod Nano, the Motoactv has a touch screen roughly about 1 square inch. It has an FM radio. But it offers much more than music and radio.

It is also loaded with software that enables people to measure their heart rates and how many calories they're burning. People can map their workouts, and when they sync the device at home, the workout … Read more

As scientists unveil artificial organs and prosthetics to improve the function of our hearts, kidneys, hands, and even eyes, it's easy to gloss over these devices' Achilles' heel: power.

Even building devices that run on very low power, such as pacemakers, tend to require additional invasive surgeries just to replace their batteries. Meanwhile, artificial limbs can be huge energy hogs, with the power source needing to be swapped out as frequently as every few weeks. Impractical is an understatement.

Biofuel cells could very well solve this problem. Researchers around the world are investigating how to use a body's own energy to power various devices, and one team out of France last year successfully implanted in a rat a biofuel cell that uses glucose and oxygen to generate electricity.… Read more

In 12 cities across England this past spring, researchers took almost 400 samples from cell phones and hands on the hunt for bacteria.

The researchers--from the London School of Hygiene and Tropical Medicine and Queen Mary, University of London--found that 16 percent of both the phones and hands contained E. coli, a form of bacteria that inhabits our intestines and is typically spread through fecal matter.

At 400, the sample size is by no means large, but if those percentages are accurate, there is simply no getting around the conclusion: traces of our own poop and the resulting bacteria are hanging out on 1 in 6 of our phones and hands.… Read more

In my neighborhood in Portland, Ore., the hipsters all like to ride minimalist fixed-gear bikes (aka fixies). Without a freewheel, a fixie generally requires pedaling forward to move forward and pedaling backward to brake. Brakes with wires are just so last year. Shoot, even handlebars are starting to look a tad frilly.

Good thing, then, that a team out of Saarland University in Germany has devised a wireless braking system that does away with those protruding brake levers and messy wires altogether. What's more, the mathematical calculations the team applied to determine safety--the same used in control systems for aircraft or chemical factories--deem the brake 99.999999999997 percent reliable.… Read more

Eight months and several hurdles after receiving 510(k) clearance, mobile-health company Mobisante says its smartphone ultrasound device is officially on the market.

The U.S. Food and Drug Administration clearance alone took so long that the MobiUS system--intended to be used in fetal, abdominal, cardiac, pelvic, and peripheral vessel imaging--only works with the 2-year-old Windows Mobile 6.5-based Toshiba TG01 smartphone and requires a USB 2.0 port for the probe. In other words, it won't be compatible with iPhones and Android-based phones, which don't support USB 2.0.… Read more