Australian researchers have developed the world's first bionic heart that pumps blood without a pulse. The device, called BiVACOR, was successfully implanted into a sheep. It uses magnetic levitation instead of sacs to pump blood, avoiding wear and tear that plagues traditional artificial hearts. The bionic heart could last up to 10 years, significantly longer than previous designs. Researchers hope to begin human trials within 3-5 years if additional testing and funding are secured.
1. Created A bionic heart that
does not beat
Scientists Shift Paradigm With Device That Pumps Blood Without
Pulse, Lasts Up to 10 Yrs
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2. Contd..
Australian researchers have developed the world's first bionic heart
that pumps blood without a pulse and it could be ready for human
trials within three years.The device, designed by Brisbane engineer Dr
Daniel Timms, has been successfully transplanted into a live and
healthy sheep.
Timms, who started the project in 2001 while studying at the
Queensland University of Technology , said the device, known as
BiVACOR, could last 10 years longer than previous artificial heart
designs because of a lack of wear and tear on parts.
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3. Contd..
The bionic heart has a small bladed disk that spins in the heart at 2,000
revolutions per minute to pump blood around the body without a pulse, a
significant departure from traditional pulse-based designs, which included
balloon-like sacs to pump blood, `Brisbane Times' reported.
“There were other devices that were quite large, and they also would break
quite easily .And the reason they would break is they would have a sac, so if
you're beating them billions of times per year, they're going to break,“ Timms
said.
He said the new device addressed the problem of wear and tear by using
magnetic levitation technology to keep the components from touching. “It
means there's no wear and that's the key of the device in that it can actually
last for up to 10 years or longer without wearing out,“ he said. “And that's a
paradigm shift actually from these earlier pulse-style devices that couldn't
last for more than two years,“ he added.
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4. Contd..
In January , a combined surgical team from Brisbane, Texas, Sydney and
Melbourne removed a sheep's heart, chosen for its similarity in chest size to
women and children, and replaced it with the device. “We've now shown
that the device works. This idea is viable. Now it's a matter of making it
robust and reliable so that it works in a patient,“ Timms said.
“The time frame is three to five years before it could be ready for humans.
We need to test it for a year to confirm its safety and regulatory properties
before we implant it in a patient,“ he said. “Proving the concept was the first
real hurdle. There are many to go from here but we're confident we have the
collaborative team to take it to that next level.“
A crowd-funding campaign has been kick started to cobble together around
$5 million to speed up the development and trials of the device.
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