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:10/12/2017)... ... October 12, 2017 , ... IsoComforter, Inc. ( ... today the introduction of an innovative new design of the shoulder pad. The ... get maximum comfort while controlling your pain while using cold therapy. By utilizing ice ...
(Date:10/12/2017)... , ... October 12, 2017 , ... ... delivery system that we intend to develop to enable prevention of a major ... to severe hearing loss, especially in pediatric patients. For cisplatin, hearing loss is ...
(Date:10/12/2017)... ... October 12, 2017 , ... Leading pediatric oncology experts at Children’s ... the 49th Congress of the International Society of Paediatric Oncology (SIOP) Oct. ... Center for Cancer and Blood Disorders at Children’s National, and Stephen P. Hunger, ...
(Date:10/12/2017)... ... ... Health Literacy Innovations (HLI), creator of the Health Literacy ... Patient Education Network (CPEN), an independent professional organization that shares best practices in ... , As CPEN’s strategic partner, HLI will help support CPEN members by sharing ...
(Date:10/12/2017)... ... October 12, 2017 , ... ... the University of California Berkeley, and other leading institutions in announcing the launch ... of institutions to change the way animals are raised for food. , Founding ...
Breaking Medicine News(10 mins):
(Date:10/5/2017)... 2017  In response to the nationwide opioid ... Surgeons (AAOMS) released prescribing recommendations that urge ibuprofen ... as a first-line therapy to manage a patient,s ... Recognizing the value and importance of ... Prescribing: Acute and Postoperative Pain Management" stresses that ...
(Date:10/4/2017)...  According to the Centers for Disease Control and Prevention (CDC), ... Urgent Care is helping communities across Massachusetts , ... offering no-cost* flu shots through the end of the month. ... regulations. ... a flu shot is by the end of October, according to the ...
(Date:10/2/2017)... -- Diplomat Pharmacy, Inc. (NYSE: DPLO ) ... , and named its founder as Diplomat,s chief information ... Tennessee , will operate under Diplomat subsidiary Envoy ... for health care partners to include IT outsourcing, consulting, ... "In an interoperable world, technology delivers comprehensive insight and ...
Breaking Medicine Technology: