Patent ID: 8221451

Claim:
A non-vascular fistula tract treatment system, comprising: a non-resorbable expandable distal anchor comprising an anchor attachment site and having a delivery configuration with a first cross-sectional area and a deployment configuration with a second cross-sectional area greater than the first cross-sectional area, wherein the distal anchor is configured for placement within a body lumen; an anchor tether attached to the anchor attachment site; a proximal anchor configured to maintain the anchor tether in a tensioned state against a skin surface; a first delivery tube configured to deliverably retain the expandable distal anchor and the anchor tether; a plurality of bioresorbable expandable fill structures located in a second delivery tube separate from, and unattached to, the first delivery tube, wherein each of the plurality of expandable fill structures comprises a porosity of at least 90%, and wherein each of the plurality of expandable fill structures comprises a cross-linking agent; and a coupling member attached to the plurality of expandable fill structures, wherein the anchor tether and the coupling member are coupled at a location adjacent to the plurality of expandable fill structures such that expandable fill structures are positioned off-axis from the anchor tether.