Features Partner Sites Information LinkXpress
Sign In
Advertise with Us
KOREA E & EX

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
LevMed LTD.

Channels

Women's Health

view channel
Image: The Eclipse vaginal insert in deflated (L) and Inflated (R) states (Phoyo courtesy of Pelvalon).

Vaginal Insert Offers Alternative Treatment for Fecal Incontinence

A novel vaginal insert for bowel control eliminates the need for surgery or an in-office procedure for the treatment of female fecal incontinence (FI). The second-generation Eclipse System is comprised... Read more

Health IT

view channel
Image: The Rigel 62353 Plus tester (Photo courtesy of Rigel Medical).

Advanced Safety Tester Analyzes Diverse Medical Devices

An upgraded dedicated tester meets international standards for in-service and post-repair safety testing of 24 V and 48 V DC medical electronic devices. The Rigel 62353 Plus tester offers a range of... Read more

Hospital News

view channel

Geneia Partners with Hospitals on Population Health Training

Geneia (Harrisburg, PA, USA) will provide population health management training to members of the Illinois Health and Hospital Association (IHA; Chicago, USA). Through its education arm, The Geneia Institute, skills-based population health management programs will be delivered to IHA's 209 hospital and nearly 50 health... Read more

Business

view channel
Image: Exhibitors and visitors meeting at KIMES 2015 (Photo courtesy of KIMES).

KIMES 2106 to Showcase Korean Medical Industry

The 32nd Korea International Medical & Hospital Equipment Show (KIMES 2016; Seoul, Republic of Korea) will offer participants the chance to identify and confirm future prospects of the medical industry.... Read more
Copyright © 2000-2016 Globetech Media. All rights reserved.