# US 2026/0083544 A1 · Stent graft with low profile passive sealing skirt and method > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2026/0083544 A1 - Document ID: US20260083544A1 - Status: Published application - Kind: A1 - Application number: 19/106,750 - Filed: 2023-09-15 - Published: 2026-03-26 - Earliest claimed: 2022-09-15 - Assignees: Medtronic Vascular, Inc. - Applicants: Medtronic Vascular, Inc. - Inventors: Adam J. SHIPLEY; Torey HOVEST; Caitlin M. OWENSON; Anish Sanjay NIGADE; Steven Michael CLAESSENS; Erik C. GRISWOLD; Lijin Rajendran NANU; Keith D. PERKINS - Web page: https://patentgrep.com/patent/US20260083544A1 ## CPC - A61F 2/07: Stent-grafts - A61F 2/2418: {Scaffolds therefor, e.g. support stents} - A61F 2/89: the wire-like elements comprising two or more adjacent rings flexibly connected by separate members - A61F 2002/075: {the stent being loosely attached to the graft material, e.g. by stitching} - A61F 2210/0076: multilayered, e.g. laminated structures - A61F 2220/0075: sutured, ligatured or stitched, retained or tied with a rope, string, thread, wire or cable - A61F 2250/001: for adjusting a diameter - A61F 2250/0039: differing in diameter - A61F 2250/0069: Sealing means - A61F: FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS (dental prosthetics A61C) ## Abstract The techniques of this disclosure generally relate to a method including providing a sealing stent graft. The sealing stent graft includes a graft material, a stent coupled to the graft material, a sealing skirt of the graft material lying flat on the stent, and a collapsing suture coupled to the graft material. The method further includes expanding the stent to cause the collapsing suture to collapse the sealing skirt. Accordingly, the sealing skirt lies flat and does not impact the packing density of sealing stent graft when in a delivery configuration. During deployment, the collapse of the sealing skirt causes the sealing skirt to protrude radially outward. This thickening of the sealing skirt improves sealing of the sealing stent graft with other structures, e.g., vessels. ## Claims ### Claim 1 An assembly comprising: a graft material comprising an edge; a stent coupled to the graft material at anchor points, the graft material comprising a sealing skirt between the anchor points and the edge; and a collapsing suture coupled to the sealing skirt and to the graft material at periodic points in an alternating repeating pattern. ### Claim 2 (depends on 1) The assembly of claim 1, wherein the periodic points comprise first periodic points that define a first suture line and second periodic points that define a second suture line. ### Claim 3 (depends on 2) The assembly of claim 2, wherein upon expansion of the stent, a longitudinal distance between the first suture line and the second suture line decreases. ### Claim 4 (depends on 3) The assembly of claim 3, wherein upon the expansion of the stent, a circumferential distance between the first suture points increases and a circumferential distance between the second suture points increases. ### Claim 5 (depends on 1) The assembly of claim 1, wherein upon expansion of the stent, the collapsing suture collapses the sealing skirt. ### Claim 6 (depends on 5) The assembly of claim 5, wherein the sealing skirt protrudes radially outward when collapsed. ### Claim 7 (depends on 6) The assembly of claim 6, further comprising a sealing stent graft comprising the graft material, the stent, and the collapsing suture and a first component, the sealing skirt being located within the first component. ### Claim 8 (depends on 5) The assembly of claim 5, wherein the sealing skirt protrudes radially inward when collapsed. ### Claim 9 (depends on 8) The assembly of claim 8 further comprising a sealing stent graft comprising the graft material, the stent, and the collapsing suture and a first component located within the sealing skirt. ### Claim 10 (depends on 1) The assembly of claim 1, wherein the sealing skirt lays flat upon the stent prior to expansion of the stent. ### Claim 11 An assembly comprising: a sealing stent graft comprising: a graft material; a stent coupled to the graft material, and a collapsing suture coupled to the graft material, wherein when the sealing stent graft is in a delivery configuration, a sealing skirt of the graft material lies flat on the stent, and wherein when the sealing stent graft is in a deployed configuration, the sealing skirt is collapsed by the collapsing suture and protrudes from the stent. ### Claim 12 (depends on 11) The assembly of claim 11, wherein the graft material further comprises an exclusion section. ### Claim 13 (depends on 12) The assembly of claim 12, wherein the stent comprises first crowns, second crowns, and struts extending between the first crowns and the second crowns, the second crowns being attached to the graft material at anchor points, the sealing skirt and the exclusion section meeting at the anchor points. ### Claim 14 (depends on 13) The assembly of claim 13, wherein the graft material comprises an edge defining an opening, the edge overlapping the struts. ### Claim 15 (depends on 13) The assembly of claim 13, wherein the stent extends from the second crowns past the edge to the first crowns. ### Claim 16 A method comprising: providing a sealing stent graft comprising: a graft material, a stent coupled to the graft material, a sealing skirt of the graft material lying flat on the stent, and a collapsing suture coupled to the graft material; and expanding the stent to cause the collapsing suture to collapse the sealing skirt. ### Claim 17 (depends on 16) The method of claim 16, wherein the collapse of the sealing skirt creates ruffles in the sealing skirt. ### Claim 18 (depends on 16) The method of claim 16 further comprising: positioning the sealing stent graft in a vessel prior to the expanding step; and deploying the sealing stent graft in the vessel. ### Claim 19 (depends on 18) The method of claim 18, wherein the sealing skirt creates a seal with the vessel. ### Claim 20 (depends on 16) The method of claim 16, further comprising creating a seal with the sealing skirt between the sealing stent graft and a first component.