GlucoseFuelCell
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MIT engineers develop glucose-based fuel cell to be used in neural implants
We've seen fuel cells used in a variety of gadgets -- from cars to portable chargers -- and while medical devices aren't exactly at the top of the list, they're yet another application for these mini power sources. MIT engineers are turning to sugar to make fuel cells for powering brain implants. The scientists developed cells that use platinum to strip electrons from glucose molecules found in a patient's cerebrospinal fluid to create a small electric current. The fuel cells are fabricated on a silicon chip so they can interface with other circuits in a brain implant. The prototype can generate up to hundreds of micro watts, which is enough to power neural implants used to help paralyzed patients move their limbs. Mind you, this technology is years away from making it to market. The next step will be proving that the devices work in animals, which reminds us of one Ricky the rat, who survived a biofuel cell implant back in 2010.
First biofuel cell successfully implanted into living creature, living creature to be implanted into The Matrix
While miscreants are harvesting organs from unsuspecting tourists, researchers are busy harvesting energy from the human body. One promising tech that could power future generations of implanted medical devices is the Glucose BioFuel Cell (GBFC). In fact, a team of researchers have created the first known GBFC to function inside a living body -- 11 days inside "Ricky" the lab rat's peritoneum, to be exact. The small device produced 2 microwatts of power over several hours, achieving a peak energy density of 24.4 microwatts per milliliter. The study concludes that a larger GBFC could be used to power a standard pacemaker (requiring ten microwatts of sustained power) yet still be smaller than the batteries in use today. Co-author Serge Cosnier of the Université Joseph Fourier says that an improved GBFC could even power biosensors like the ones proposed for insulin pumps. Until that day arrives, click through for the before- and, um, organic after-implant pics. The fact that the rat's body had coated the GBFC device with tissue and newly grown blood vessels is proof that the body had accepted it for glucose and oxygen processing. P.S. That's the Engadget Lolrat, not Ricky, pictured above. Ricky was apparently unharmed... this time.
