# US 10,441,407 B2 · Gutter filling stent-graft and method

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- Number: US 10,441,407 B2
- Document ID: US10441407B2
- Status: Granted
- Kind: B2
- Application number: 15/096,939
- Filed: 2016-04-12
- Published: 2017-10-12
- Granted: 2019-10-15
- Earliest claimed: 2016-04-12
- Assignees: Medtronic Vascular, Inc.
- Applicants: Medtronic Vascular, Inc.
- Inventors: Sohrab Sethna
- Web page: https://patentgrep.com/patent/US10441407B2

## CPC

- A61F 2/07: Stent-grafts
- A61F 2/852: Two or more distinct overlapping stents
- A61F 2/945: hardenable, e.g. stents formed in situ
- A61F 2002/061: {provided with means for allowing access to secondary lumens}
- A61F 2002/077: {having means to fill the space between stent-graft and aneurysm wall, e.g. a sleeve}
- A61F 2002/826: {more than one stent being applied sequentially}
- A61F 2210/0061: swellable
- A61F 2210/0085: hardenable in situ, e.g. epoxy resins
- A61F 2250/0003: having an inflatable pocket filled with fluid, e.g. liquid or gas
- A61F 2250/0023: differing in porosity
- 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

A primary stent-graft is deployed into a primary vessel to exclude an aneurysm. To maintain perfusion to a branch vessel covered by the primary stent-graft, a gutter filling stent-graft is deployed in parallel to the primary stent-graft. The gutter filling stent-graft includes a balloon that is pressurized and inflated by the patient's own blood thereby sealing any gutters formed around the gutter filling stent-graft. By sealing the gutters, the chance of type I endoleaks, migrations, and overall failure to exclude the aneurysm is minimized.

## Claims

### Claim 1

A graft assembly comprising:
a primary stent-graft in parallel with a gutter filling stent-graft;
the gutter filling stent-graft comprising:
a main stent-graft comprising non-permeable graft material comprising an inner surface and an outer surface, the inner surface defining a lumen within the graft material; and
a balloon coupled to the graft material at the outer surface, the balloon comprising:
a base comprising permeable material, the base being perpendicular to a longitudinal axis of the main stent-graft;
a balloon section coupled to the base, the balloon section comprising non-permeable material; and
a single expansion member configured to expand the base, the single expansion member coupled to either an outer periphery of the base or an end of the balloon section which is coupled to the base, wherein the main stent-graft, the base, and the balloon section define an inflatable balloon sac of the balloon.

### Claim 2 (depends on 1)

The graft assembly of claim 1 wherein the balloon section is conical such that a diameter of the balloon section decreases as the distal distance from the base increases.

### Claim 3 (depends on 1)

The graft assembly of claim 1 wherein the single expansion member comprises a resilient ring at the outer periphery of the base.

### Claim 4 (depends on 1)

The graft assembly of claim 1 wherein the single expansion member comprises a stent-ring.

### Claim 5 (depends on 1)

The graft assembly of claim 1 wherein the base comprises an annulus comprising an inner periphery coupled to the main stent-graft and the outer periphery coupled to the balloon section.

### Claim 6 (depends on 1)

The graft assembly of claim 1 wherein the single expansion member consists of a resilient ring at the outer periphery of the base.

### Claim 7 (depends on 1)

The graft assembly of claim 1 wherein the single expansion member consists of a stent-ring at the end of the balloon section which is coupled to the base.