Navigation Links
New Sensors Stick to Organs to Monitor Health
Date:3/24/2010

Pliable electronic devices already tracking heart function in pigs, scientists say

WEDNESDAY, March 24 (HealthDay News) -- A new generation of flexible, miniaturized devices that stick onto organs promises better diagnosis and control of medical conditions ranging from heart problems to epilepsy, researchers report.

For example, "in the heart, we could do cardiac mapping and get rid of areas of arrhythmia much faster than is now done," explained study author Dr. Brian Litt, an associate professor of neurology and bioengineering at the University of Pennsylvania. "In the brain, we could treat movement orders and epilepsy with finer control than ever before."

The technology might also be useful in monitoring a variety of other organs, the team said.

The new technology uses electrodes flexible enough to stick and hold to wet human tissue -- "like putting a thin film of cellophane on the heart," Litt said, and small enough so that there can be 300 contacts per square centimeter of tissue.

Electronic medical devices such as pacemakers that are currently in use keep all their electronic circuits inside a container that is typically distant from the area being controlled or monitored.

In contrast, the systems now being tested in animals have wires running to hundreds or thousands of tiny electrodes that are magnitudes smaller than those seen in devices today.

One possible goal is a new kind of pacemaker that will allow for better control of abnormal heart rhythms. "We think we can find [arrhythmias] quicker, with a thin, larger flexible patch over the heart," Litt said. "We could measure rhythm all over the heart at one time."

The devices are being developed in a collaboration between physicians and engineers at the University of Pennsylvania, the University of Illinois and Northwestern University. They reported their findings in the March 24 issue of Science Translational Medicine.

"By integrating silicon transistors, we can combine signals and use fewer wires to connect these electrodes to external instruments," said Jonathan Viventi, a graduate student at the University of Pennsylvania, who is due to gain his doctorate next month and who leads a group developing the systems. Their report describes a device capable of measuring electrical activity in the hearts of pigs, animals often used in such research.

The device has more than 2,000 closely spaced electrodes that are flexible enough to fit around the curving surface of the heart, with electronics engineered to operate in the salty environment of body fluids.

"These are flexible electrodes for medical applications, where it is necessary to work with body tissues of irregular shape," Viventi said. "There are other devices with flexible displays. One prototype device can have a reader with a fold-up screen. We are trying to approach the microscopic dimensions that the body works in."

The devices are approaching the level where they might be commercially produced, Litt said. "We have done proof-of-principle testing in pig hearts and also are testing in the brains of other large animals," he said. "We may be able to create a new generation of devices that can map the brain so that we can see where disordered networks of brain cells are. We have other papers in process."

More information

There's more on the heart's electrical function at the U.S. National Heart, Lung, and Blood Institute.



SOURCES: Brian Litt, M.D., associate professor, neurology and bioengineering; Jonathan Viventi, graduate student, both from the University of Pennsylvania, Philadelphia; March 24, 2010, Science Translational Medicine


'/>"/>
Copyright©2010 ScoutNews,LLC.
All rights reserved

Related medicine news :

1. Nanosensors Spot Early Signs of Cancer
2. ANT+ and Texas Instruments connect proven ultra low power sensors to smartphones
3. Carnegie Mellon will test ability of embedded sensors to detect onset of dementia, infirmity
4. Alternative chemicals ease safety concerns about nonstick, repellent coatings
5. Sticks and stones break bones, but this UH study may prevent it
6. Mail-Order May Help People Stick to Med Regimens
7. Med Students Often Fail to Report Needlestick Injuries
8. An inexpensive dipstick test for pesticides in foods
9. Top Reasons Those Get Fit Resolutions Dont Stick
10. Twinlab Launches New Omega-3 Powder in Single-Serving Stick Packs for Busy Parents and Their Kids
11. Risks of Kids Surgeries May Not Stick With Parents
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/25/2016)... ... ... The temporary closing of Bruton Memorial Library on June 21 due to a possible lice ... overlooked aspect of head lice: the parasite’s ability to live away from a human host, ... a necessary one in the event that lice have simply gotten out of control. , ...
(Date:6/25/2016)... ... June 25, 2016 , ... First Choice Emergency Room , the largest ... as the Medical Director of its new Mesquite-Samuell Farm facility. , “We are ... Mesquite location,” said Dr. James M. Muzzarelli, Executive Medical Director of First Choice Emergency ...
(Date:6/25/2016)... ... June 25, 2016 , ... Dr. Calvin Johnson ... Recently, he has implemented orthobiologic procedures as a method for treating his patients. ... the first doctors to perform the treatment. Orthobiologics are substances that orthopaedic surgeons ...
(Date:6/25/2016)... ... , ... Conventional wisdom preaches the benefits of moderation, whether it’s a matter ... bar too high can result in disappointment, perhaps even self-loathing. However, those who set ... , Research from PsychTests.com reveals that behind the tendency to set low ...
(Date:6/24/2016)... (PRWEB) , ... June 24, 2016 , ... Those who ... with these feelings, many turn to unhealthy avenues, such as drug or alcohol abuse, ... Marne, Michigan, has released tools for healthy coping following a traumatic event. , Trauma ...
Breaking Medicine News(10 mins):
(Date:6/24/2016)... -- Research and Markets has announced ... Applications, Technologies, Forecasts" report to their offering. ... Smart Skin, Structural Health Monitoring, Composite Smart Structures, ... involves electronic and/or electrical components and circuits that ... such as vehicle bodies or conformally placed upon ...
(Date:6/24/2016)... India , June 24, 2016 ... Needles Market by Type (Standard Pen Needles, Safety Pen ... Therapy (Insulin, GLP-1, Growth Hormone), Mode of Purchase (Retail, ... by MarketsandMarkets, This report studies the market for the ... expected to reach USD 2.81 Billion by 2021 from ...
(Date:6/23/2016)... 2016 Research and Markets has announced ... Forecast to 2022" report to their offering. ... the patients with kidney failure, it replaces the function of ... patient,s blood and thus the treatment helps to keep the ... balance. Increasing number of ESRD patients & ...
Breaking Medicine Technology: