Stanford Creates Wireless, Self-Propelling Medical Implant
February 23, 2012 1:03 PM
Wirelessly powered, self-propelled medical device
(Source: Carlos Suarez, StrongBox3d)
Implant could eventually be used in applications like diagnostics, minimally invasive surgeries and drug delivery
A Stanford University researcher has developed new wireless medical devices that can be
or injected into the human body.
Ada Poon, study leader and assistant professor from Stanford University, has created a wireless medical device capable of traveling through the bloodstream without cables or a battery.
implantable medical devices
used today are limited due to power problems. More specifically, the batteries needed to power such devices are bulky. While other researchers have managed to make these batteries in devices smaller, they've had to compromise power as well. This is problematic because the batteries would often have to be replaced, and there are also risks associated with battery corrosion or broken wires.
That's exactly why Poon created devices that do not require batteries or cables. The implantable/injectable devices consist of a radio transmitter, which is kept outside of the body and communicates with an antenna of coiled wire on the device. The antenna and transmitter are magnetically coupled, so a change in current flow in the transmitter induces a voltage in the coiled wire. This powers the device wirelessly, allowing it to make its way through the bloodstream.
Poon was able to do what many others couldn't because instead of looking at human fat, muscle and bone as good conductors of electricity, she found that it's a better insulator instead. Using new equations, she discovered that human tissue is actually a poor conductor of electricity, and that high-frequency radio waves move easily through the fat, muscle and bone.
"When we extended things to
using a simple model of tissue, we realized that the optimal frequency for wireless powering is actually around one gigahertz -- about 100 times higher than previously thought," said Poon.
Poon has created two devices: one that switches current back and forth in a wire loop to make a "swishing" motion, and another that drives electrical current through the liquid to create a "directional force."
Poon said it would be a while before these devices can be used in hospitals, but could eventually be used in applications like diagnostics, minimally invasive surgeries and drug delivery.
"What would I do? I'd shut it down and give the money back to the shareholders." -- Michael Dell, after being asked what to do with Apple Computer in 1997
Woman Receives World's First Complete 3D Printed Lower Jaw Implant
February 6, 2012, 12:41 PM
Adjustable Brain Implant Could Identify Seizure Origins, Shut it Down
November 14, 2011, 3:21 PM
Studies: Radio Waves Hurt Tree Growth, Kill Bees
July 9, 2010, 7:15 AM
Cyber Hackers Threaten Security of Lifesaving Medical Devices
October 19, 2016, 8:09 AM
Innovative Neurotechnology in Sound Therapy Reduces High Blood Pressure and Migraines
October 16, 2016, 5:00 AM
Researchers Move Closer to Breakthrough Gene Therapy to Cure Sickle Cell
October 14, 2016, 5:00 AM
Keytruda: A breakthrough treatment to increase survival rates for lung cancer patients
October 12, 2016, 5:00 AM
CDC Warning about Record High Increases in 2016 for Polio-like Illness causing Paralysis
October 9, 2016, 5:00 AM
Hypertension in children impacts cognitive performance
October 5, 2016, 5:00 AM
Most Popular Articles
Problems with Windows 10 – Update Now
October 15, 2016, 7:30 AM
End of the Road for the Audi R8 e-tron
October 15, 2016, 5:00 AM
Is Razer Blade Stealth Laptop For You?
October 16, 2016, 5:00 AM
Bluetooth Saves Lives
October 16, 2016, 7:05 AM
IBM – Cloud Object Storage Cheaper than Amazon S3
October 14, 2016, 5:00 AM
Latest Blog Posts
Nasa Flies Drones at Nevada Airport
Oct 21, 2016, 8:21 AM
T-Mobile Data Problems
Oct 20, 2016, 10:17 AM
Annoying Apple Watch Problems and How to Fix Them
Oct 20, 2016, 5:00 AM
Your Mail May Soon Be Delivered By Robot
Oct 19, 2016, 9:34 AM
2018 Jeep Wrangler Prototype Sells At Junkyard
Oct 18, 2016, 5:00 AM
Samsung Shines with Gold Edition Tablet
Oct 17, 2016, 9:24 AM
Tesla Hints Mysterious Product Debut for October 17th
Oct 16, 2016, 10:14 AM
Samsung Galaxy Note 7 Phones on US flights
Oct 15, 2016, 5:00 AM
Comcast Fined $2.3 Million For Unconfirmed Services Charged To Customers
Oct 14, 2016, 5:00 AM
“American singer / songwriter “Bob Dylan is awarded 2016 Nobel Prize in Literature.
Oct 13, 2016, 10:33 AM
Battery Defect in Medical Device
Oct 12, 2016, 5:00 AM
IBM Bolsters Social Services Sector With Technology Grants
Oct 11, 2016, 5:00 AM
Scientists Sound Alarm on Climate but US Still Toys With Skepticism
Oct 10, 2016, 5:00 AM
IMEX America Trade Show
Oct 9, 2016, 10:00 AM
Phone Wars – Google VS Samsung Free Gifts on Purchase
Oct 6, 2016, 5:00 AM
Member of Parliament’s opposition car exploded in Tbilist capital of Georgia
Oct 5, 2016, 2:52 PM
US Government Cuts Cord On Internet Oversight
Oct 3, 2016, 10:34 AM
Are farm children less likely to have allergies and asthma in adulthood?
Sep 30, 2016, 5:00 AM
More Blog Posts
Copyright 2016 DailyTech LLC. -
Terms, Conditions & Privacy Information