Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Pump design could give heart patients new hope

12.04.2007
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."

Professor Tan, who has pioneered artificial heart research at QUT, is a member QUT's Institute of Health and Biomedical Innovation. He established the QUT/Prince Charles Hospital (TPCH) research team which utilises the expertise of the hospital's cardiologists and heart surgeons. The group has produced a number of pump designs.

Niki Widdowson | EurekAlert!
Further information:
http://www.researchaustralia.com.au/

More articles from Medical Engineering:

nachricht Medical gamma-ray camera is now palm-sized
23.05.2017 | Waseda University

nachricht Computer accurately identifies and delineates breast cancers on digital tissue slides
11.05.2017 | Case Western Reserve University

All articles from Medical Engineering >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: A quantum walk of photons

Physicists from the University of Würzburg are capable of generating identical looking single light particles at the push of a button. Two new studies now demonstrate the potential this method holds.

The quantum computer has fuelled the imagination of scientists for decades: It is based on fundamentally different phenomena than a conventional computer....

Im Focus: Turmoil in sluggish electrons’ existence

An international team of physicists has monitored the scattering behaviour of electrons in a non-conducting material in real-time. Their insights could be beneficial for radiotherapy.

We can refer to electrons in non-conducting materials as ‘sluggish’. Typically, they remain fixed in a location, deep inside an atomic composite. It is hence...

Im Focus: Wafer-thin Magnetic Materials Developed for Future Quantum Technologies

Two-dimensional magnetic structures are regarded as a promising material for new types of data storage, since the magnetic properties of individual molecular building blocks can be investigated and modified. For the first time, researchers have now produced a wafer-thin ferrimagnet, in which molecules with different magnetic centers arrange themselves on a gold surface to form a checkerboard pattern. Scientists at the Swiss Nanoscience Institute at the University of Basel and the Paul Scherrer Institute published their findings in the journal Nature Communications.

Ferrimagnets are composed of two centers which are magnetized at different strengths and point in opposing directions. Two-dimensional, quasi-flat ferrimagnets...

Im Focus: World's thinnest hologram paves path to new 3-D world

Nano-hologram paves way for integration of 3-D holography into everyday electronics

An Australian-Chinese research team has created the world's thinnest hologram, paving the way towards the integration of 3D holography into everyday...

Im Focus: Using graphene to create quantum bits

In the race to produce a quantum computer, a number of projects are seeking a way to create quantum bits -- or qubits -- that are stable, meaning they are not much affected by changes in their environment. This normally needs highly nonlinear non-dissipative elements capable of functioning at very low temperatures.

In pursuit of this goal, researchers at EPFL's Laboratory of Photonics and Quantum Measurements LPQM (STI/SB), have investigated a nonlinear graphene-based...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Marine Conservation: IASS Contributes to UN Ocean Conference in New York on 5-9 June

24.05.2017 | Event News

AWK Aachen Machine Tool Colloquium 2017: Internet of Production for Agile Enterprises

23.05.2017 | Event News

Dortmund MST Conference presents Individualized Healthcare Solutions with micro and nanotechnology

22.05.2017 | Event News

 
Latest News

Physicists discover mechanism behind granular capillary effect

24.05.2017 | Physics and Astronomy

Measured for the first time: Direction of light waves changed by quantum effect

24.05.2017 | Physics and Astronomy

Marine Conservation: IASS Contributes to UN Ocean Conference in New York on 5-9 June

24.05.2017 | Event News

VideoLinks
B2B-VideoLinks
More VideoLinks >>>