Stanford Creates Wireless, Self-Propelling Medical Implant
February 23, 2012 1:03 PM
comment(s) - last by
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.
This article is over a month old, voting and posting comments is disabled
RE: Anyone can explain this?
2/24/2012 3:32:42 AM
You can buy wireless chargers at Best Buy both for cell phones and even the Wii mote has a wireless charger accessory available, this is call inductive charging.
Oklahoma has a stretch of road that has wires buried that were designed to inductively charge an EV Battery while it drove, to give longer distance, but this was back in the '90s. they still talk about inductive charging powered by Solar cell raised above the roadbed, both charging batteries and providing shade that reduces energy needed to cool (A/C) cars in the summer.
"We can't expect users to use common sense. That would eliminate the need for all sorts of legislation, committees, oversight and lawyers." -- Christopher Jennings
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
Creationists are Mad About Google Doodle Depicting Evolution
November 24, 2015, 8:48 PM
DHS and TSA: Whoops, We Missed That 73 Airport Employees May be Terrorists
November 19, 2015, 2:16 PM
Star Wars Spinoff Film "Rogue One", Theme Park Attractions Announced
August 17, 2015, 12:20 PM
SpaceX Falcon 9's Seventh Supply Mission to ISS Ends w/ Fiery Stage 1 Explosion
June 28, 2015, 1:10 PM
Cool Science Video: Glowing Millipede Prowls the Nevada Desert
May 18, 2015, 12:00 PM
Newly Discovered Costa Rican Glass Frog is Kermit's Doppelgänger
April 22, 2015, 11:26 AM
Latest Blog Posts
Sceptre Airs 27", 120 Hz. 1080p Monitor/HDTV w/ 5 ms Response Time for $220
Dec 3, 2014, 10:32 PM
Costco Gives Employees Thanksgiving Off; Wal-Mart Leads "Black Thursday" Charge
Oct 29, 2014, 9:57 PM
"Bear Selfies" Fad Could Turn Deadly, Warn Nevada Wildlife Officials
Oct 28, 2014, 12:00 PM
The Surface Mini That Was Never Released Gets "Hands On" Treatment
Sep 26, 2014, 8:22 AM
ISIS Imposes Ban on Teaching Evolution in Iraq
Sep 17, 2014, 5:22 PM
More Blog Posts
Copyright 2016 DailyTech LLC. -
Terms, Conditions & Privacy Information