Patent ID: 9538996
Date: 2017-01-10
CPC Classifications: A61B,A61L

Claim:
1. A medical graft device useful for treating a fistula having at least a primary opening in a bodily structure wall and a fistula tract extending from the primary opening, the medical graft device comprising: a biocompatible graft body including a capping member and an elongate plug member, the capping member comprising a plug-facing surface and a plug-opposing surface opposite the plug-facing surface, the plug-opposing surface being a distal-most surface of the medical graft device; the plug-facing surface having a peripheral region and an inner region inside the peripheral region; the peripheral region of the plug-facing surface configured to contact portions of the bodily structure wall adjacent to the primary opening and including a support frame supporting a deformable covering material, the elongate plug member coupled to the deformable covering material and extending from the inner region of the capping member and including a rolled sheet material providing a volumetric body configured to fill at least a portion of the fistula tract; and a tether extending in a proximal direction away from a proximal end of the elongate plug member and having a length sufficient to extend through the fistula tract so as to be useful to pull the graft body into position, the tether not being part of the rolled sheet material; wherein the inner region of the capping member is deformable from a first condition to a second condition by pulling the elongate plug member in a direction away from the capping member; wherein in the first condition the inner and peripheral regions define a generally flat surface that is substantially perpendicular to a longitudinal axis of the plug member; and wherein in the second condition the peripheral region defines a generally flat surface substantially perpendicular to the longitudinal axis of the plug member and the inner region of the plug-facing surface defines a convex surface and the plug-opposing surface of the capping member defines a corresponding concave surface.