Patent ID: 9572556
Date: 2017-02-21
CPC Classifications: A61B,A61M

Claim:
1. A medical graft product for treating a fistula having at least a primary opening and a fistula tract, the medical graft product comprising: an elongate plug body configured to fill at least a segment of a fistula tract, the elongate plug body comprised of a dried, remodelable collagenous material including a plurality of generally cylindrical passages formed therein prior to being lyophilized and the dried, remodelable collagenous material effective to promote cellular invasion and ingrowth into the remodelable material for closing the fistula with remodeled patient tissue, wherein each of the formed passages has a generally coherent passage wall that extends from an exterior surface of the plug body into interior regions of the plug body, the plurality of generally cylindrical passages being sufficient to provide an increased exposed surface area extending into the interior regions of the plug body such that the remodelable collagenous material in the plug body is substantially uniformly lyophilized.