Navigation Links
Heartbeat Might One Day Power Pacemakers
Date:11/10/2008

British researchers suggest harnessing that energy could lead to cardiac devices that last longer, do more

MONDAY, Nov. 10 (HealthDay News) -- In a new twist on the concept of renewable energy, British researchers report that harnessing the heart's own energy may provide power for pacemakers and implanted defibrillators to work.

That might lead to devices that last longer and do even more, said the scientists, who presented their findings at the American Heart Association's annual scientific sessions in New Orleans.

"The heart ejecting is doing an awful lot of work. It's a tremendous mechanical force," said Dr. Ann Bolger, a spokeswoman for the American Heart Association (AHA) and William Watt Kerr professor of clinical medicine at the University of California, San Francisco.

Bolger described a "ballistocardiograph," consisting of a table suspended from the ceiling. A patient lies on the table, and doctors measure the heart beat as actual movement of the table.

Capturing part of that force, Bolger added, "may make the difference between ever needing your battery changed."

Implantable pacemakers are battery-run devices that help the heart maintain a regular rhythm. Implantable cardioverter defibrillators (ICDs), also battery-powered, pick up dangerous heart rhythms and then deliver an electric shock to restore normal rhythms.

According to the researchers, adding more power to pacemakers and implantable defibrillators would necessitate bigger devices. That becomes an issue of "patient tolerance and comfort," Bolger said.

The microgenerator developed by inventors at Southampton University Hospital in the United Kingdom is called the self-energizing implantable medical microsystem (SIMM) and was tested by InVivo Technology, Perpetuum and Zarlink Semiconductor using British government funds.

The microgenerator and two "bladders" are mounted on the wire that connects the pacemaker or defibrillator to the heart. The wire, or lead, is attached to the heart's right ventricle. The bladders "pump" energy at each heartbeat to the generator, which turns it into electricity to be used by the battery.

In this case, the device was implanted into a pig by way of the internal jugular vein.

A heart working at the rate of 80 beats per minute generated 4.3 microjoules of energy per cardiac cycle, about 17 percent of the electricity needed to run a pacemaker.

When the heart beat faster, more energy was produced, and when the heart beat slower or blood pressure was reduced, the corresponding energy produced declined.

The device appeared to cause no harm to the heart.

"The study is very preliminary," said American Heart Association spokesman Dr. Gordon Tomaselli, a professor of medicine in the division of cardiology and molecular medicine at the Johns Hopkins University School of Medicine in Baltimore. "People aren't going to change manufacturing based on this data."

But researchers are currently changing the materials of the microgenerator in the hopes of producing all the energy an implanted pacemaker or defibrillator needs.

More information

The American Heart Association has more on pacemakers.



SOURCES: Ann F. Bolger, M.D., American Heart Association spokeswoman and William Watt Kerr professor of clinical medicine, University of California, San Francisco; Gordon Tomaselli, M.D., co-director, Donald W. Reynolds Cardiovascular Clinical Research Center, and professor, medicine, division of cardiology and molecular medicine, Johns Hopkins University School of Medicine, Baltimore; Nov. 10, 2008, presentation, American Heart Association annual scientific sessions, New Orleans


'/>"/>
Copyright©2008 ScoutNews,LLC.
All rights reserved  

Related medicine news :

1. Most Patients With Irregular Heartbeat Take Inadequate Blood Thinner Dose
2. Decisions under pressure: its all in the heartbeat
3. Statins May Help Older Women Control Irregular Heartbeat
4. Cholesterol-Lowering Drugs May Ease Irregular Heartbeat
5. Atrial Fibrillation Screening Can Identify Irregular Heartbeat That Leads to Stroke
6. Blood Pressure, Heartbeat Problems Aggravate Alzheimers
7. Drug, Pacemaker Fight Irregular Heartbeat
8. New Compound Might Be Improvement Over Allergy Shots
9. Statin Might Help More People Fight Heart Disease Than Thought
10. Migraine Might Lower Breast Cancer Risk
11. Silicone Breast Implants Might Raise Risk of Rare Lymphoma
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Heartbeat Might One Day Power Pacemakers
(Date:5/4/2016)... ... May 04, 2016 , ... Natalie Jill is a well respected ... preparation of the launch of her new book: Natalie Jill’s 7 Day Jump Start: ... designed to jump start a new healthy lifestyle featuring simple recipes using MitoXcell’s raw ...
(Date:5/4/2016)... ... May 04, 2016 , ... Bayco ... compact tactical (6.7 inch) dual-light flashlights in models NSP-9842XL and NSR-9844XL . ... retail starting at $59.95) uses 2 included CR-123 batteries to produce up to ...
(Date:5/4/2016)... Prairie du Sac, Wisconsin (PRWEB) , ... ... ... The OMNIFORCE collection delivers next-level compression and support for knees, ankles, and ... a great value. , Innovative 3D flat-bed manufacturing (opposed to ineffective circular ...
(Date:5/4/2016)... ... May 04, 2016 , ... Mediware Information Systems, Inc ... application that helps blood and marrow transplant (BMT) programs meet compliance and accreditation ... has continued to enhance core application features. These enhancements are designed to help ...
(Date:5/4/2016)... ... May 04, 2016 , ... Over 40 athletic trainer’s (ATs) and athletic training ... the annual “Hike to Harrisburg” advocacy day. The annual lobbying effort is a ... Group. The goal for the day was to educate the elected legislators and ...
Breaking Medicine News(10 mins):
(Date:5/3/2016)... , May 3, 2016  Specialty Silicone Fabricators ... that shows how a cleanroom works. The free ... about science and technology. ... a technology company, SSF enthusiastically supports the Science, ... educators foster the next generation of innovators. We ...
(Date:5/2/2016)... 2016 Kalorama Information noted the 5 Most ... in a recent white paper.  The healthcare market research ... a growing market are among the top drivers of ... EMR 2016: The Market for Electronic Medical ... study of the EMR industry, and the report is ...
(Date:5/2/2016)... 2016 The global  ultrasound ... billion by 2024, according to a new report ... of the sonography market include expanding applications of ... for periodic ultrasound screenings of the breast for ... ) High Intensity Focused Ultrasound ...
Breaking Medicine Technology: