Featured Research

from universities, journals, and other organizations

Heart Pump Design Could Give Patients New Hope

Date:
April 16, 2007
Source:
Queensland University of Technology
Summary:
A new counter-flow heart pump being developed by Queensland University of Technology has the potential to revolutionize future designs of the mechanical heart.

Queensland University of Technology Professor Andy Tan examines the new counter-flow heart pump under development.
Credit: Queensland University of Technology

A new counter-flow heart pump being developed by Queensland University of Technology has the potential to revolutionize future designs of the mechanical heart. Lead researcher Associate Professor Andy Tan said the heart pump's innovative design was based on a double-output centrifugal model that pushed the blood in a counter direction to ensure correct flow through both sides of the heart, and is the subject of a patent application.

"The counter-flow pump is a bi-ventricular assist device (BVAD), meaning it supports both the left and right sides of the heart simultaneously," he said. "But what's so groundbreaking is that it is the first device to combine the function of two pumps into one unit.

Professor Tan said current double heart pump technology was too bulky because it required the implant of two pumps that worked independently. "The problem with two pumps is that it requires different controllers and can potentially lead to an uneven blood flow. "The concept of the counter-flow pump is that it has two independent impellers to simulate two pumps to augment the operations of the left and right ventricles but is essential only one.

"Using independent impellers, the blood is able to flow at a higher delivery pressure as required by the left chamber of the heart, and a slower pressure as required by the right chamber of the heart."

Professor Tan said a shortage of heart donors and high rates of cardiovascular disease were driving scientists across the globe to develop the technology for a replacement heart. "Each year in Australia, 44 per cent of all deaths are related to heart disease," Professor Tan said.

"In fact heart failure, stroke and vascular disease kill more Australians than any other disease group. To reduce the number of deaths, treatment is now focused on medical devices that can assist or totally replicate the function of the heart."

He said a heart pump capable of supporting both chambers would dramatically increase patients' chance of survival. "Clinical studies around the world have found that patients who received a permanent left heart pump (left ventricular assist device) reduced their risk of dying within one year by 47 per cent," Professor Tan said.

"Unfortunately 25 per cent of these patients went on to develop right heart failure syndrome, infection and multi-organ failure. We have developed the design, and computer modelling has shown that it works."


Story Source:

The above story is based on materials provided by Queensland University of Technology. Note: Materials may be edited for content and length.


Cite This Page:

Queensland University of Technology. "Heart Pump Design Could Give Patients New Hope." ScienceDaily. ScienceDaily, 16 April 2007. <www.sciencedaily.com/releases/2007/04/070410091354.htm>.
Queensland University of Technology. (2007, April 16). Heart Pump Design Could Give Patients New Hope. ScienceDaily. Retrieved September 1, 2014 from www.sciencedaily.com/releases/2007/04/070410091354.htm
Queensland University of Technology. "Heart Pump Design Could Give Patients New Hope." ScienceDaily. www.sciencedaily.com/releases/2007/04/070410091354.htm (accessed September 1, 2014).

Share This




More Health & Medicine News

Monday, September 1, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Get on Your Bike! London Cycling Popularity Soars Despite Danger

Get on Your Bike! London Cycling Popularity Soars Despite Danger

AFP (Sep. 1, 2014) Wedged between buses, lorries and cars, cycling in London isn't for the faint hearted. Nevertheless the number of people choosing to bike in the British capital has doubled over the past 15 years. Duration: 02:27 Video provided by AFP
Powered by NewsLook.com
We've Got Mites Living In Our Faces And So Do You

We've Got Mites Living In Our Faces And So Do You

Newsy (Aug. 30, 2014) A new study suggests 100 percent of adult humans (those over 18 years of age) have Demodex mites living in their faces. Video provided by Newsy
Powered by NewsLook.com
Liberia Continues Fight Against Ebola

Liberia Continues Fight Against Ebola

AFP (Aug. 30, 2014) Authorities in Liberia try to stem the spread of the Ebola epidemic by raising awareness and setting up sanitation units for people to wash their hands. Duration: 00:41 Video provided by AFP
Powered by NewsLook.com
California Passes 'yes-Means-Yes' Campus Sexual Assault Bill

California Passes 'yes-Means-Yes' Campus Sexual Assault Bill

Reuters - US Online Video (Aug. 30, 2014) California lawmakers pass a bill requiring universities to adopt "affirmative consent" language in their definitions of consensual sex, part of a nationwide drive to curb sexual assault on campuses. Linda So reports. Video provided by Reuters
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins