# US 2019/0167458 A1 · Endoprosthesis having aligned legs for ease of cannulation

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- Number: US 2019/0167458 A1
- Document ID: US20190167458A1
- Status: Published application
- Kind: A1
- Application number: 16/266,308
- Filed: 2019-02-04
- Published: 2019-06-06
- Earliest claimed: 2012-02-14
- Assignees: W. L. Gore & Associates, Inc.
- Applicants: W. L. Gore & Associates, Inc.
- Inventors: Kyle R. Buckley; Benjamin I. Espen; Douglas C. Helsel; Stanislaw L. Zukowski
- Web page: https://patentgrep.com/patent/US20190167458A1

## CPC

- A61F 2/954: for placing stents or stent-grafts in a bifurcation
- A61F 2/07: Stent-grafts
- A61F 2/848: having means for fixation to the vessel wall, e.g. barbs
- A61F 2/856: Single tubular stent with a side portal passage
- A61F 2/89: the wire-like elements comprising two or more adjacent rings flexibly connected by separate members
- A61F 2/90: characterised by a net-like or mesh-like structure
- A61F 2/91: made from perforated sheets or tubes, e.g. perforated by laser cuts or etched holes
- A61F 2/915: with bands having a meander structure, adjacent bands being connected to each other
- A61F 2/95: Instruments specially adapted for placement or removal of stents or stent-grafts
- A61F 2/9517: {handle assemblies therefor}
- A61F 2/962: having an outer sleeve
- A61F 2/966: with relative longitudinal movement between outer sleeve and prosthesis, e.g. using a push rod
- A61F 2/97: the outer sleeve being splittable
- A61F 2002/061: {provided with means for allowing access to secondary lumens}
- A61F 2002/065: {Y-shaped blood vessels}
- A61F 2002/067: {modular}
- A61F 2002/072: {Encapsulated stents, e.g. wire or whole stent embedded in lining}
- A61F 2002/075: {the stent being loosely attached to the graft material, e.g. by stitching}
- A61F 2002/821: {Ostial stents}
- A61F 2002/825: {having longitudinal struts}
- A61F 2002/8486: {provided on at least one of the ends}
- A61F 2002/9505: {having retaining means other than an outer sleeve, e.g. male-female connector between stent and instrument}
- A61F 2002/9511: {the retaining means being filaments or wires}
- A61F 2002/9665: {with additional retaining means}
- A61F 2210/0014: using shape memory or superelastic materials, e.g. nitinol
- A61F 2210/009: magnetic
- A61F 2220/005: using adhesives
- A61F 2220/0058: soldered or brazed or welded
- A61F 2220/0075: sutured, ligatured or stitched, retained or tied with a rope, string, thread, wire or cable
- A61F 2230/0054: V-shaped
- 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 present disclosure is directed to a branched endoprosthesis comprising a graft component and at least one support component. In various embodiments, the branched endoprosthesis comprises a body portion and a plurality of leg portions, wherein the legs are in an aligned configuration for ease of cannulation. In various embodiments, at least one leg is in an open configuration for ease of cannulation. Cannulation methods are also described.

## Claims

### Claim 1

A medical device comprising:
a stent graft including a graft component and a support component, the stent graft having a body portion, a first leg, and a second leg, wherein the first leg and the second leg are structurally biased to angle apart from one another; and
a restraint aligning the first and second legs to couple together and maintain alignment of the first and second legs by temporarily overcoming the bias to assist in cannulation of the second leg during deployment of the stent graft, wherein the restraint is configured to be removed after deployment such that first and second legs are free to angle apart from one another.

### Claim 2 (depends on 1)

The medical device of claim 1, wherein the restraint comprises a tether having an end that is tucked under undeployed portions of a sleeve surrounding the stent graft.

### Claim 3 (depends on 1)

The medical device of claim 1, wherein the removable restraint comprises a tether having an end that is routed between the support component and the graft component.

### Claim 4 (depends on 1)

The medical device of claim 1, wherein the support component provides for the first leg and the second leg being structurally biased to angle apart in a Y configuration.

### Claim 5 (depends on 1)

The medical device of claim 1, wherein the first leg is substantially axially longer than the second leg.

### Claim 6 (depends on 1)

The medical device of claim 1, wherein the removable restraint is a sheath that is disposed about both the first leg and the second leg.

### Claim 7 (depends on 1)

The medical device of claim 1, further comprising a plurality of serially aligned support components adapted to hold the second leg open for cannulation.

### Claim 8 (depends on 1)

The medical device of claim 1, further comprising a radiopaque marker at the distal end of the second leg.

### Claim 9 (depends on 1)

The medical device of claim 1, wherein the first and second legs extend from a first end of the body.

### Claim 10 (depends on 1)

The medical device of claim 1, wherein the restraint is configured to temporarily overcome the bias by creating an alignment of the first and second legs during deployment of the stent graft such that a plane of the opening of the second leg is secured perpendicular to an axis of the first leg during deployment.

### Claim 11

A medical device comprising:
a stent graft having a graft component and a support component, the stent graft having a body portion, a first leg and a second leg, the stent graft having a collapsed configuration for endoluminal delivery and an expanded configuration larger than the collapsed configuration;
a removable restraint having a first portion and a second portion extending from the first portion; and
an outer sheath for releasably retaining the stent graft toward the collapsed configuration, the outer sheath having opposite sides releasably held together by the first portion of the removable restraint; wherein
the second portion of the removable restraint extends between the first and second legs to couple together and maintain alignment of the first and second legs as the first portion is actuated to release the opposite sides of the outer sheath.

### Claim 12 (depends on 11)

The stent graft of claim 11, wherein the first and second legs extend from a first end of the body.

### Claim 13 (depends on 11)

The stent graft of claim 11, wherein the first leg is substantially axially longer than the second leg.

### Claim 14 (depends on 11)

The medical device of claim 11, wherein an end of the removable restraint is tucked under undeployed portions of a sleeve surrounding the stent graft.

### Claim 15 (depends on 11)

The medical device of claim 11, wherein and end of the removable restraint is tucked between the support component and the graft component.

### Claim 16 (depends on 11)

The medical device of claim 11, wherein the first leg and the second leg are structurally biased to angle apart from one another in a Y configuration.

### Claim 17 (depends on 16)

The medical device of claim 16, wherein the support component provides for the first leg and the second leg being structurally biased to angle apart in the Y configuration.

### Claim 18 (depends on 16)

The medical device of claim 16, wherein the restraint is configured to temporarily overcome the bias by creating an alignment of the first and second legs during deployment of the stent graft such that a plane of the opening of the second leg is secured perpendicular to an axis of the first leg during deployment.

### Claim 19 (depends on 11)

The medical device of claim 11, further comprising a plurality of serially aligned support components adapted to hold the second leg open for cannulation.

### Claim 20 (depends on 11)

The medical device of claim 11, further comprising a radiopaque marker at the distal end of the second leg.