# US 10,500,042 B2 · Stents with anchoring sections

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- Number: US 10,500,042 B2
- Document ID: US10500042B2
- Status: Granted
- Kind: B2
- Application number: 15/312,005
- Filed: 2015-05-20
- Published: 2017-03-23
- Granted: 2019-12-10
- Earliest claimed: 2014-05-22
- Assignees: St. Jude Medical, Cardiology Division, Inc.
- Applicants: St. Jude Medical, Cardiology Division, Inc.
- Inventors: Xue Mei Li
- Web page: https://patentgrep.com/patent/US10500042B2

## CPC

- A61F 2/2418: {Scaffolds therefor, e.g. support stents}
- A61F 2/2409: {Support rings therefor, e.g. for connecting valves to tissue (annuloplasty rings A61F2/2442)}
- A61F 2/2436: {Deployment by retracting a sheath}
- A61F 2220/0008: Fixation appliances for connecting prostheses to the body
- A61F 2230/0034: D-shaped
- A61F 2230/0067: conical
- A61F 2230/008: paraboloidal
- 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 stent (300, 400, 400′) for a prosthetic heart valve includes a body having an inflow end (310, 410) and an outflow end (312, 412), and an anchoring section (340, 440) adjacent the inflow end. The anchoring section may include structure (342, 344, 420) that extends radially outwardly from the body when the stent is in an expanded condition. The stent may include a transition section (370, 470) between the body and the anchoring section, the transition section in the expanded condition of the stent having a diameter that is smaller than the diameters of the body and the anchoring section. When implanted into a native valve annulus, such as the mitral valve annulus, the anchoring section may help the stent resist migrating away from the native valve annulus.

## Claims

### Claim 1

A stent having a collapsed condition and an expanded condition, the stent comprising:
a body having an outflow end and an inflow end; and
an anchoring section adjacent the inflow end and including a first annular disc and a second annular disc, the first annular disc and the second annular disc each extending radially outwardly from the body when the stent is in the expanded condition, the first and second annular discs each being formed of a braided material,
the body including a plurality of struts forming cells, the body providing a surface for attachment of prosthetic valve leaflets so that the prosthetic valve leaflets radially overlap a portion of the body, the body and the anchoring section being positioned in series such that, in the collapsed condition of the stent, no portion of the first disc radially overlaps with any portion of the struts of the body and no portion of the second disc radially overlaps with any portion of the struts of the body.

### Claim 2 (depends on 1)

The stent of claim 1, wherein the first disc has a smaller diameter than the second disc when the stent is in the expanded condition.

### Claim 3 (depends on 2)

The stent of claim 2, wherein the second disc is positioned farther away from the outflow end than the first disc.

### Claim 4 (depends on 1)

The stent of claim 1, wherein the braided material is Nitinol.

### Claim 5 (depends on 1)

The stent of claim 1, wherein the anchoring section includes a gap between the first disc and the second disc when the stent is in the expanded condition.

### Claim 6 (depends on 1)

The stent of claim 1, wherein the first disc is integral with the second disc.

### Claim 7 (depends on 6)

The stent of claim 6, wherein the first disc and the second disc are each integral with the body.

### Claim 8 (depends on 1)

The stent of claim 1, wherein the first disc flares away from the outflow end and the second disc flares toward the outflow end when the stent is in the expanded condition.

### Claim 9 (depends on 1)

The stent of claim 1, wherein the first disc and the second disc each extend at an angle of about 90 degrees from a longitudinal axis of the body when the stent is in the expanded condition.

### Claim 10

A prosthetic heart valve comprising:
a stent having a collapsed condition and an expanded condition, the stent having:
a body having an outflow end and an inflow end; and
an anchoring section adjacent the inflow end and including a first annular disc and a second annular disc, the first annular disc and the second annular disc each extending radially outwardly from the body when the stent is in the expanded condition, the first and second annular discs each being formed of a braided material,
the body including a plurality of struts forming cells, the body providing a surface for attachment of prosthetic valve leaflets so that the prosthetic valve leaflets radially overlap a portion of the body, the body and the anchoring section being positioned in series such that, in the collapsed condition of the stent, no portion of the first disc radially overlaps with any portion of the struts of the body and no portion of the second disc radially overlaps with any portion of the struts of the body;
and at least two prosthetic heart valve leaflets positioned within the body.

### Claim 11 (depends on 10)

The prosthetic heart valve of claim 10, wherein the at least two prosthetic heart valve leaflets are configured to be in a supraannular position with respect to a native valve annulus when implanted.