However, current methods are only about 50% effective at removing blood clots and fail completely in about 15% of cases.
Now, in a groundbreaking new study published in the scientific journal Nature , researchers at the prestigious Stanford University in the US have invented a new stroke treatment method that can be up to 90% more effective than current methods, according to the science news site Scitech Daily.
When it comes to treating strokes caused by blood clots blocking blood vessels to the brain, time is of the essence.
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Experts at Stanford University's Stanford Engineering School have invented a device that can remove blood clots much better than existing techniques, removing clots faster, simpler and more effectively.
This is the invention of a research team led by Ruike Renee Zhao, Professor of Mechanical Engineering and Associate Professor Jeremy Heit, Head of the Department of Diagnostic Imaging and Interventional Neurology at Stanford University. The authors removed the blood clot by inserting a microscopic rotating device into the blood vessel, this portable device can swim freely through the blood vessels to remove the clot, called a milli-spinner.
A blood clot forms when the protein fibrin combines with red blood cells to form a sticky mass.
The milli-spinner approaches the clot through a long, hollow tube that rotates rapidly, creating localized suction near the clot. The machine uses two forces—compression and shear—to roll the fibrin strands into a compact ball without breaking them, and safely remove the clot.
“It’s incredible! This groundbreaking technique will dramatically improve our ability to save patients,” said Associate Professor Heit.
Completely overcome the disadvantages of the current method
Scientists have just invented a new stroke treatment that could be much more effective than current methods.
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Currently, blood clot removal is done by inserting a thin tube into the blood vessel to suction out the clot or using a metal mesh to "catch" the clots.
However, the current method has two unresolved drawbacks:
One is the low success rate - only 50% after the first attempt, even up to 15% of cases fail completely after multiple attempts to remove the clot, and for the most solid, difficult-to-treat clots, current techniques can only remove about 11%.
Meanwhile, the new method is up to 90% effective on the first attempt, and even with stubborn blood clots, the new method can clear the artery up to 90% of the time.
Second, the old method cannot reduce the size of the blood clot, but only deforms and breaks the blood clot to remove it. The blood clot can break into many small pieces and get stuck in hard-to-reach places.
In this regard, Professor Zhao emphasized: The advantage of the milli-spinner is that it can compress blood clots to a very small size by applying compression and shear forces, allowing them to be easily removed without breaking apart. She explained: The volume of the blood clot can be reduced to 5% of its original size. At the same time, red blood cells are released from the fibrin fibers and flow into the blood vessels, according to Scitech Daily.
The team said they are now working on a portable micro-rotating device that can swim freely through blood vessels to remove blood clots. Professor Zhao said the device could also have the potential to remove kidney stones.
The team hopes the new device will soon be approved for use in patients. They plan to set up a company to commercialize the technology and plan clinical trials in the near future.
Source: https://thanhnien.vn/ky-thuat-dot-pha-co-the-cuu-benh-nhan-dot-quy-hieu-qua-den-90-18525061518374477.htm
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