| abstract |
A woven vascular graft having alternating plain/twill weave and two pairs of double leno weave is disclosed. Connventional knitted grafts are flexible soft and conforming, but require preclotting because the porosity is too great. Convenntional woven grafts have low porosity and do not need preclotting but are stiffer and less conforming than knit grafts. The nnew vascular graft of this invention has low porosity as in other woven grafts, yet the pliability is similar to extruded grafts. nThe inventive weave pattern has fill threads (20), warp twill weave threads (23) and (25), plain warp threads (22) and (24), nand two adjacent pairs of leno threads (26), (27), and (28), (29). |