Navigation Links
Highlights from major acoustical science and technology conference, Nov. 15-19
Date:11/3/2010

p>

Many implanted medical devices get energy from batteries, which eventually run down. Beaming energy through the skin is a useful alternative, especially for supplying cochlear implants, which require about 70 mW of power. Here the issue is whether to go with energy in the form of radio waves (RF) or ultrasound. For both methods about 10-12 percent of the beamed energy gets lost on the way as it moves through several millimeters of tissue, usually by being scattered rather than being absorbed. In both systems the overall energy efficiency is about 40-50 percent.

Rob Adamson, a researcher at Dalhousie University in Halifax, Canada, prefers the ultrasound approach, since the power source is much smaller: the RF coils are typically 5 cm in diameter, compared to 5 mm for the ultrasound source. Furthermore, the RF setup often requires an extra magnet (to keep the coils aligned), and this precludes the patient having an MRI scan performed without having the implant removed.

Adamson's ultrasound beaming device is not yet in clinical trials, but his lab is affiliated with an ear surgeon.

"We are reporting successful experiments in delivering power across a water bath using ultrasound with 38 percent efficiency," says Adamson.

The ultrasound approach might be useful for supplying energy to other such as artificial hearts.

The talk "A miniature, ultrasonic transcutaneous energy transmission system for powering implantable medical devices (1pBB9)" by Rob Adamson is at 3:50 p.m. on Monday, November 15.

Abstract: http://asa.aip.org/web2/asa/abstracts/search.nov10/asa36.html

8) Repelling Divers with the Sound of Their Breath

At the Stevens Institute of Technology in Hoboken, New Jersey, Alexander Sutin is developing a non-lethal weapon for protecting ports from underwater divers with malicious intentions -- an ac
'/>"/>

Contact: Jason S. Bardi
jbardi@aip.org
301-209-3091
American Institute of Physics
Source:Eurekalert

Page: 1 2 3 4 5 6 7 8 9 10 11 12 13

Related biology news :

1. 2010 AAO-HNSF new research highlights: Tuesday, Sept. 28, 2010
2. 2010 AAO-HNSF new research daily highlights: Sunday, Sept. 26, 2010
3. July 2010 Geology and GSA Today highlights
4. 5-year report highlights status of Washingtons forest resources
5. Selected highlights of the research being presented at the Experimental Biology 2010 meeting
6. Study highlights forest protected areas as a critical strategy for slowing climate change
7. Society of Interventional Radiology highlights medical advances, new discoveries
8. Study highlights sustainable footprint of chemical companies
9. Glacier-melting debate highlights importance of satellites
10. AGU journal highlights -- January 21, 2010
11. Conference highlights impact of unsettled summer weather on UK marine life
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:9/19/2014)... unveiled today by researchers from several Harvard University ... both experienced and aspiring researchers with the intellectual ... robots made from soft, flexible materials. , With ... and other advances in manufacturing technology, soft robotics ... principles drawn from conventional rigid robot design, but ...
(Date:9/19/2014)... SHELTON, Conn. , Sept. 19, 2014 Nxt-ID, Inc. ... a biometric authentication company focused on the growing m-commerce market, updates ... and world champion in the lightweight and light middleweight weight classes, ... Yesterday it was announced that Game of Thrones ... and Married with Children star Katey Sagal ...
(Date:9/18/2014)... Miranda, a small, icy moon of Uranus, is one ... the solar system. Despite its relatively small size, Miranda ... that resulted in the formation of at least three ... coronae. , These coronae are visible in Miranda,s ... km across. Arden corona, the largest, has ridges and ...
Breaking Biology News(10 mins):Soft robotics 'toolkit' features everything a robot-maker needs 2NXT-ID's Vinny Paz Celebrity Ad Wocket Update: Katey Sagal and Ciaran Hinds Attached to His Upcoming Movie 2NXT-ID's Vinny Paz Celebrity Ad Wocket Update: Katey Sagal and Ciaran Hinds Attached to His Upcoming Movie 3Miranda: An icy moon deformed by tidal heating 2Miranda: An icy moon deformed by tidal heating 3Miranda: An icy moon deformed by tidal heating 4Miranda: An icy moon deformed by tidal heating 5Miranda: An icy moon deformed by tidal heating 6Miranda: An icy moon deformed by tidal heating 7
... insight into genetic basis of human diseaseHigh-throughput sequencing of ... which can give clues to the genetic underpinning of ... information from the individual's two chromosomes. Yet many ... individuals' DNA at the level of each chromosome -- ...
... Prehistoric big game hunters and not the last ice age ... sloths and other North American great mammals such as mammoths, ... , Determining whether the first arrival of humans or the ... last Ice Age was responsible for the demise of prehistoric ...
... The National Programme on Substance Abuse Deaths (np-SAD) based at ... London, has found that there has been a decline in ... to 1,372 in 2004, a drop of eight per cent. ... for the year 2004 reported by Coroners and Procurators Fiscal ...
Cached Biology News:California computer scientists double volume of data in NIH biotech repository 2California computer scientists double volume of data in NIH biotech repository 3California computer scientists double volume of data in NIH biotech repository 4Study shows big game hunters, not climate change, killed off sloths 2Study shows big game hunters, not climate change, killed off sloths 3Continued reduction in the number of drug-related deaths in the UK 2Continued reduction in the number of drug-related deaths in the UK 3
(Date:9/19/2014)... September 19, 2014 , The ... Society for Paediatric Endocrinology (ESPE) Meeting  Investment ... medical research in the field of growth  , ... Germany , today announced the first ... 2014. The awards were announced during a Satellite Symposium ...
(Date:9/18/2014)... 18, 2014 HealthTronics, Inc ... interventional radiology products and services, announced that a ... and cryoablation) versus external beam radiotherapy (EBRT) is ... American Urological Association (MAAUA) Annual Meeting in Baltimore, ... Effectiveness of Cryosurgery and External Beam Radiation as ...
(Date:9/18/2014)... A novel robotic system that can operate inside ... tested as part of a biomedical research partnership program ... aim of determining if the robot, in conjunction with ... more accurate, less costly, and less discomforting for the ... deliver prostate cancer therapies with greater precision. , Developed ...
(Date:9/18/2014)... 2014 Texas Governor Rick Perry, ... A&M Health Science Center CEO Brett Giroir, M.D., ... and Human Services (HHS), State of Texas and ... influenza vaccine manufacturing facility in Bryan, Texas, which ... the Texas A&M Biocorridor – a rapidly evolving ...
Breaking Biology Technology:EMD Serono Awards Grant for Growth Innovation (GGI) for the First Time 2EMD Serono Awards Grant for Growth Innovation (GGI) for the First Time 3HealthTronics Announces Data Comparing Cryotherapy Versus Radiation for Treating Prostate Cancer Poster Presented at the American Urological Association Regional Meeting 2Worcester Polytechnic Institute Participates in Clinical Trial for MRI-Compatible Robot Designed to Improve Accuracy of Prostate Cancer Biopsies 2Worcester Polytechnic Institute Participates in Clinical Trial for MRI-Compatible Robot Designed to Improve Accuracy of Prostate Cancer Biopsies 3Worcester Polytechnic Institute Participates in Clinical Trial for MRI-Compatible Robot Designed to Improve Accuracy of Prostate Cancer Biopsies 4Worcester Polytechnic Institute Participates in Clinical Trial for MRI-Compatible Robot Designed to Improve Accuracy of Prostate Cancer Biopsies 5Worcester Polytechnic Institute Participates in Clinical Trial for MRI-Compatible Robot Designed to Improve Accuracy of Prostate Cancer Biopsies 6Texas A&M Dedicates National Pandemic Influenza Vaccine Manufacturing Facility, on Track for 2016 Start-Up Phase 2Texas A&M Dedicates National Pandemic Influenza Vaccine Manufacturing Facility, on Track for 2016 Start-Up Phase 3Texas A&M Dedicates National Pandemic Influenza Vaccine Manufacturing Facility, on Track for 2016 Start-Up Phase 4
... Madison, Wis. - A kind of traveling road show ... one of the most controversial areas of scientific research - ... the skeptics are walking away a little less skeptical. , ... Technology Council , and Sue Carlson, director of operations for ...
... it was announced that First Data , one the ... by the huge private equity firm, Kohlberg Kravis Roberts ... reported : , ,The deal ranks among the 10 ... firms, aided by a flood of cheap debt and eager ...
Whitewater, Wis . - Sharon Ethanol , a subsidiary of <a...
Cached Biology Technology:Traveling stem cell show continues state tour 2Traveling stem cell show continues state tour 3Of private equity, research, and drug development 2Of private equity, research, and drug development 3Of private equity, research, and drug development 4Of private equity, research, and drug development 5