Features | Partner Sites | Information | LinkXpress
Sign In
SOREDEX
Samsung
Shuenn Bao Shing Corporation

Novel Cardiac Pacemaker Needs No Battery

By HospiMedica International staff writers
Posted on 09 Jul 2014
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



Anetic Aid
Dunlee
CardioComm Solutions

Channels

Surgical Techniques

view channel
Image: The Invuity Waveguide XT System (Photo courtesy of Invuity).

Intracavity Illuminator Provides Superior In-Situ Visualization

A universal, “drop in” illuminator addresses the inherent challenges of minimal access surgery (MIS) and helps improve outcomes. The Invuity Waveguide XT System is based on intelligent photonics technology... Read more

Women's Health

view channel

Women with PTSD Face Higher Pregnancy Risk

Suffering from post-traumatic stress disorder (PTSD) significantly increases a pregnant woman's risk of premature birth, according to a new study. Researchers at Stanford University (CA, USA) conducted a study to identify antenatal PTSD status and spontaneous preterm delivery in a retrospective cohort (2000-2012).... Read more

Health IT

view channel

Wikipedia Page Views Could Predict Disease Outbreaks

A new study suggests that Wikipedia access data could be an effective tool for forecasting disease outbreaks up to a month in advance. Researchers at the Los Alamos National Laboratory (NM, USA) reviewed access logs to disease-related Wikipedia pages between 2010 and 2013. They mapped the languages the information was... Read more

Hospital News

view channel

Unused US Medical Supplies Could Support Hospitals Abroad

Major hospitals across the United States collectively throw away at least USD 15 million a year in unused operating room (OR) surgical supplies that could be salvaged and used to ease critical shortages, improve surgical care, and boost public health in developing countries. Researchers at Johns Hopkins Hospital (JHH;... Read more

Business

view channel

Global Wound Care Market Rife With Opportunity

Strong relationships with end users and an effective post sales service strategy must be a priority for wound care companies. These are the latest findings of Frost & Sullivan (Frost; London, United Kingdom), an international market research firm. The global wound care market is at a growth stage, driven by the increasingly... Read more
 
Copyright © 2000-2014 Globetech Media. All rights reserved.