Manufacturing Industry
Helical twists in bypass grafts enable better flow, longer life.(MPMD)
Advanced Materials & Processes, October, 2005
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Evidence is mounting that bypass grafts work much better and last much longer if they have helical twists, report researchers at Imperial College London, England. When surgeons make a graft to bypass a blockage in a blood vessel, they often have to use prosthetic tubes because suitable arteries and veins are typically not available.
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The problem is that blood flow in these prosthetic tubes is different from the flow in natural blood vessels. Arteries naturally twist like a corkscrew, and this three-dimensional structure makes the blood swirl as it flows, which prevents it from ...
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