Preliminary comparative study of small amplitude helical and conventional ePTFE arteriovenous shunts in pigs.

  title={Preliminary comparative study of small amplitude helical and conventional ePTFE arteriovenous shunts in pigs.},
  author={Colin Gerald Caro and Nick Cheshire and Nick Watkins},
  journal={Journal of the Royal Society, Interface},
  volume={2 3},
Intimal hyperplasia (IH), which causes occlusion of arterial bypass grafts and arteriovenous (A-V) shunts, develops preferentially in low wall shear, or stagnation, regions. Arterial geometry is commonly three-dimensional, generating swirling flows, the characteristics of which include in-plane mixing and inhibition of stagnation. Clinical arterial bypass grafts are commonly two-dimensional, favouring extremes of wall shear. We have developed small amplitude helical technology (SwirlGraft… CONTINUE READING

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