COLLAPSIBLE AND RE-EXPANDABLE PROSTHETIC HEART VALVE CUFF DESIGNS AND COMPLEMENTARY TECHNOLOGICAL APPLICATIONS

• US 20160242904A1
• Filed: 05/05/2016
• Published: 08/25/2016
• Est. Priority Date: 07/15/2008
• Status: Active Grant

• Current Assignee: St. Jude Medical (Abbott Laboratories Incorporated)
• Original Assignee: St Jude Medical Incorporated (Abbott Laboratories Incorporated)
• Inventors: Braido, Peter N., Ashworth, Paul E., Schraut, Julia A.
• Granted Patent: US 9,681,949 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: A61F 2/2409 Support rings therefor, e.g. for connecting valves to tissue annuloplasty rings A61F2/2442
• CPC Class Codes: A61F 2/2412 with soft flexible valve members, e.g. tissue valves shaped like natural valves check valves with flexible valve members in general F16K15/14
• CPC Class Codes: A61F 2/2418 Scaffolds therefor, e.g. support stents
• CPC Class Codes: A61F 2/2427 Devices for manipulating or deploying heart valves during implantation
• CPC Class Codes: A61F 2/243 Deployment by mechanical expansion
• CPC Class Codes: A61F 2/2433 using balloon catheter
• CPC Class Codes: A61F 2/2436 Deployment by retracting a sheath
• CPC Class Codes: A61F 2/2442 Annuloplasty rings or inserts for correcting the valve shape; Implants for improving the function of a native heart valve
• CPC Class Codes: A61F 2/246 Devices for obstructing a leak through a native valve in a closed condition
• CPC Class Codes: A61F 2/2466 Delivery devices therefor
• CPC Class Codes: A61F 2210/0014 using shape memory or superelastic materials, e.g. nitinol
• CPC Class Codes: A61F 2220/0008 Fixation appliances for connecting prostheses to the body
• CPC Class Codes: A61F 2220/0016 with sharp anchoring protrusions, e.g. barbs, pins, spikes
• CPC Class Codes: A61F 2220/0075 sutured, ligatured or stitched, retained or tied with a rope, string, thread, wire or cable
• CPC Class Codes: A61F 2230/0054 V-shaped
• CPC Class Codes: A61F 2230/0069 cylindrical
• CPC Class Codes: A61F 2250/0003 having an inflatable pocket filled with fluid, e.g. liquid or gas
• CPC Class Codes: A61F 2250/0039 differing in diameter
• CPC Class Codes: A61F 2250/0069 Sealing means

Abstract

A prosthetic heart valve is provided with a cuff having features which promote sealing with the native tissues even where the native tissues are irregular. The cuff may include a portion adapted to bear on the LVOT when the valve is implanted in a native aortic valve. The valve may include elements for biasing the cuff outwardly with respect to the stent body when the stent body is in an expanded condition. The cuff may have portions of different thickness distributed around the circumference of the valve in a pattern matching the shape of the opening defined by the native tissue. All or part of the cuff may be movable relative to the stent during implantation.

Claims

1. A method of implanting a prosthetic heart valve within a native valve annulus of a patient, the prosthetic heart valve including a stent body, a valve element mounted within the stent body and operative to allow flow through the stent body in an antegrade direction and to substantially block flow through the stent body in a retrograde direction, and a cuff connected to the stent body and including an inner wall adjacent the stent body and an outer wall spaced outwardly from the inner wall so as to define a space between the inner wall and the outer wall, the method comprising:

inserting the prosthetic heart valve percutaneously to the vicinity of the native valve annulus of the patient using a delivery device;

partially deploying the prosthetic heart valve from the delivery device;

positioning the prosthetic heart valve so that the outer wall of the cuff is within the native valve annulus; and

fully deploying the prosthetic heart valve from the delivery device, whereupon the prosthetic heart valve can move from a collapsed condition to an expanded condition and a flow of blood around the prosthetic heart valve can enter the space between the inner wall and the outer wall of the cuff and bias the outer wall outwardly into engagement within the native valve annulus.