SELF-ACTUATING SEALING PORTIONS FOR PARAVALVULAR LEAK PROTECTION

• US 20160296329A1
• Filed: 06/15/2016
• Published: 10/13/2016
• Est. Priority Date: 03/12/2013
• Status: Active Grant

• Current Assignee: St. Jude Medical Cardiology Division Incorporated (Abbott Laboratories Incorporated)
• Original Assignee: St. Jude Medical Cardiology Division Incorporated (Abbott Laboratories Incorporated)
• Inventors: Alkhatib, Yousef F., Eidenschink, Tracee
• Granted Patent: US 9,687,341 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: A61F 2/2418 Scaffolds therefor, e.g. support stents
• CPC Class Codes: A61F 2/2436 Deployment by retracting a sheath
• CPC Class Codes: A61F 2220/0008 Fixation appliances for connecting prostheses to the body
• CPC Class Codes: A61F 2230/0065 toroidal, e.g. ring-shaped, doughnut-shaped
• CPC Class Codes: A61F 2250/0007 for adjusting length
• CPC Class Codes: A61F 2250/0069 Sealing means
• CPC Class Codes: A61F 2250/007 O-rings

Abstract

A prosthetic heart valve for replacing a native valve includes a collapsible and expandable stent having a proximal end and a distal end, and a valve assembly including a plurality of leaflets, the valve assembly being disposed within the stent. The heart valve further includes a plurality of elongated legs each with a first end coupled to the stent and a free end, the elongated legs being configured to transition from an extended configuration to a relaxed configuration. A sealing portion connected to the plurality of legs forms a sealing structure when the legs transition to the relaxed configuration to reduce perivalvular leakage between the implanted valve and surrounding tissue.

Claims

1. (canceled)

2. A method for implanting a prosthetic heart valve in a native valve annulus, the method comprising:

loading the heart valve in a delivery system, the heart valve including;

(a) a collapsible and expandable stent having a proximal end and a distal end, (b) a valve assembly disposed within the stent, the valve assembly including a plurality of leaflets, (c) a plurality of elongated legs configured to transition from an extended configuration to a relaxed configuration, and (d) a sealing portion connected to the plurality of legs, the heart valve being loaded in the delivery system with the plurality of legs in the extended configuration;

delivering the heart valve to the native valve annulus; and

deploying the heart valve within the native valve annulus, whereupon the plurality of elongated legs transition from the extended configuration to the relaxed configuration and the sealing portion forms a sealing structure.

3. The method of claim 2, wherein the delivery system includes a core and a sheath disposed about the core, the heart valve being disposed about the core and within the sheath.

4. The method of claim 2, wherein the deploying step includes retracting the sheath to expose the heart valve.

5. The method of claim 2, wherein the plurality of legs are disposed substantially parallel to the sheath when loaded in the delivery system.

6. The method of claim 2, wherein the deploying step includes curling the plurality of legs toward the distal end of the stent when the plurality of legs are exposed from the sheath.

7. The method of claim 2, wherein the deploying step includes axially collapsing the plurality of legs to form an undulating shape when exposed from the sheath.

8. The method of claim 2, wherein the deploying step includes forming a toroidal sealing ring about a portion of the heart valve.

9. The method of claim 2, wherein the sealing portion includes a toroidal sealing ring that is spaced from the stent when the plurality of legs are in the extended configuration

10. The method of claim 2, wherein the deploying step includes forming a sealing ring below native leaflets of the native valve.

11. The method of claim 2, wherein the deploying step includes forming a sealing ring within native leaflets of the native valve.

12. The method of claim 2, wherein the deploying step includes forming a sealing ring above native leaflets of the native valve.