LOW BLEED IMPLANTABLE PROSTHESIS WITH A TAPER

摘要

A vascular graft having a sealing layer and a tapered length portion. The sealing layer provides the vascular graft with low bleed characteristics subsequent to a needle puncture such as with a dialysis needle or a suture needle. The sealing layer in the tapered length portion has varying wall thickness along the tapered length portion.

主权项

1. An implantable device comprising:
a tubular structure having a transition portion having a transition portion proximal end with a transition portion proximal end inside diameter, a transition portion distal end with a transition portion distal end inside diameter that is greater than the transition portion proximal end inside diameter, and a transition portion length between the transition portion proximal end and the transition portion distal end; wherein the tubular structure has a first layer comprising a porous polymer and at least one intermediate layer adjacent the first layer; and wherein the intermediate layer has a variable wall thickness extending at least partially along the transition portion length.