Double-velour synthetic vascular graft
First Claim
1. A warp-knitted, double-velour synthetic vascular graft of a material to which tissue can adhere, comprising a tubular trellis of a non-texturized yarn, said trellis being provided with a multiplicity of knitted fibrous loops of a texturized yarn projecting both outwardly and inwardly from the surfaces of said trellis and presenting a pile mat of filamentary material receptive to tissue ingrowth on the outer and inner surfaces of said trellis, the ratio of the length of said loop yarn to the length of said trellis yarn in said graft lying between 1.75 and 4.50 said loops being effective to improve the rate of growth of tissue into said graft.
2 Assignments
0 Petitions
Accused Products
Abstract
A double-velour vascular graft has a tubular body or trellis with loops projecting both outwardly and inwardly from said trellis. The loops on both the inner and outer surfaces of the trellis provide for more effective preclotting and ingrowth of tissue without impeding the flow of blood through the tubular body. The graft is produced on a double-needle bar warp-knitting machine using two outside beams and two inside beams, the beams feeding yarn for the loops to said knitting machine at a greater rate than the beams feeding yarn for the trellis.
179 Citations
30 Claims
- 1. A warp-knitted, double-velour synthetic vascular graft of a material to which tissue can adhere, comprising a tubular trellis of a non-texturized yarn, said trellis being provided with a multiplicity of knitted fibrous loops of a texturized yarn projecting both outwardly and inwardly from the surfaces of said trellis and presenting a pile mat of filamentary material receptive to tissue ingrowth on the outer and inner surfaces of said trellis, the ratio of the length of said loop yarn to the length of said trellis yarn in said graft lying between 1.75 and 4.50 said loops being effective to improve the rate of growth of tissue into said graft.
Specification