Abstract:

In view of the low radial compliance of the current woven artifical blood vessels made of polyester （PET）, polytrimethylene terephthalate (PTT) filament yarns are used as the weft in manufacturing artifical blood vessels. Tensile tests show that the initial modulus of woven fabrics made of PTT filaments is much lower than that of common PET filaments. In addition, the former shows much better property of elastic recovery than the latter. The radial compliance of woven artifical blood vessels made of PTT and PET filaments is tested respectively on a newly developed compliance tester. The results show that, under the same pulse pressures, PTT woven artifical blood vessel has good radial compliance and is more suitable to meet the requirements of the body blood vessel in diameter-pressure variation.