Features Partner Sites Information LinkXpress
Sign In
Advertise with Us
Ampronix

Events

27 Aug 2016 - 31 Aug 2016

Novel Cardiac Pacemaker Needs No Battery

By HospiMedica International staff writers
Posted on 08 Jul 2014
Print article
Image: Cardiac pacemaker powered by a flexible piezoelectric energy harvester (Photo courtesy of KAIST).
Image: Cardiac pacemaker powered by a flexible piezoelectric energy harvester (Photo courtesy of KAIST).
A prototype self-powered cardiac pacemaker stimulated a living rat's heart using electrical energy converted from its body movements.

Developed by researchers at the Korea Advanced Institute of Science and Technology (KAIST; Daejeon, South Korea) and Yonsei University (Seoul, South Korea), the artificial cardiac pacemaker is powered semipermanently by a high-performance flexible piezoelectric nanogenerator based on a bulk magnesium niobate-lead titanate (PMN-PT) thin film single-crystal. Electrical energy is generated from the continuous bending and unbending of the flexible PMN-PT thin film harvesting plates.

The researchers succeeded in harvesting energy that reached up to 8.2 V and 0.22 mA by the bending and pushing motions of the crystal, which were high enough values to directly stimulate the rat's heart. According to the researchers, the technology could potentially facilitate the use of self-powered flexible energy harvesters, not only prolonging the lifetime of cardiac pacemakers but also for realizing real-time heart monitoring. The study was published online ahead of print on April 2014 in Advanced Materials.

“For clinical purposes, the current achievement will benefit the development of self-powered cardiac pacemakers as well as prevent heart attacks via the real-time diagnosis of heart arrhythmia,” said lead author Prof. Keon Jae Lee, PhD, of the department of materials science and engineering. “In addition, the flexible piezoelectric nanogenerator could also be utilized as an electrical source for various implantable medical devices.”

Repeated surgeries to replace pacemaker batteries have exposed elderly patients to health risks such as infections or severe bleeding during the procedures.

Related Links:

Korea Advanced Institute of Science and Technology
Yonsei University



Print article
JD Honigberg International
ARAB HEALTH

Channels

Women's Health

view channel
Image: A new study describes a novel index that quantifies net bone formation and resorption, which may help identify women that experience fast bone loss across the menopause transition (Photo courtesy of UCLA).

Novel Index Could Identify Rapid Bone Loss Risk

Developed by researchers at the University of California, Los Angeles (UCLA; USA), and the University of Tokyo (Japan), the Bone Balance Index (BBI) estimates the relationship between resorption (urinary... Read more

Business

view channel

Philips Acquires Wellcentive to Expand Population Health Portfolio

Royal Philips (Amsterdam, Netherlands) has acquired Wellcentive (Alpharetta, GA, USA), which provides population health management software solutions. Philips currently provides enterprise telehealth, home monitoring, personal emergency response systems (PERS) and personal health services to address multiple groups within... Read more
Copyright © 2000-2016 Globetech Media. All rights reserved.