Prosthetic vascular graft
First Claim
1. A vascular graft comprising:
- a) a biocompatible base substrate having a lumenal and ablumenal surface; and
b) a biocompatible material covering a substantial portion of the ablumenal surface of said substrate, said biocompatible material being secured to said ablumenal surface at at least one point and being deflectable with respect to said ablumenal surface,wherein said biocompatible material comprises at least one fiber having a surface, wherein said at least one fiber is arranged such that various portions of the surface may be adjacent to each other, and wherein a substantial portion of said various adjacent surface portions are free to move with respect to each other.
2 Assignments
0 Petitions
Accused Products
Abstract
A vascular graft in the form of a tube or flat sheet of biocompatible material having an outer covering of deflectably secured material such as porous film, fibers, discrete pieces of material, or combinations thereof. The vascular graft may be of tubular form for replacing or bypassing entire segments of veins or arteries or alternatively may be in the form of a flat sheet useful for repairing portions of the circumference of veins or arteries. The tube or flat sheet of biocompatible material and the outer covering of deflectably secured material are preferably of porous polytetrafluoroethylene. The inventive vascular graft is useful for dialysis access in that it offers a reduction in blood leakage when the vascular graft is punctured by a dialysis needle and the needle is subsequently removed. It is also useful for reducing suture hole bleeding resulting from holes created through the graft by penetration of the graft with a suture needle.
129 Citations
26 Claims
-
1. A vascular graft comprising:
-
a) a biocompatible base substrate having a lumenal and ablumenal surface; and b) a biocompatible material covering a substantial portion of the ablumenal surface of said substrate, said biocompatible material being secured to said ablumenal surface at at least one point and being deflectable with respect to said ablumenal surface, wherein said biocompatible material comprises at least one fiber having a surface, wherein said at least one fiber is arranged such that various portions of the surface may be adjacent to each other, and wherein a substantial portion of said various adjacent surface portions are free to move with respect to each other. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
-
Specification