Annuloplasty devices and related heart valve repair methods

• US 6,730,121 B2
• Filed: 05/14/2002
• Issued: 05/04/2004
• Est. Priority Date: 07/06/2000
• Status: Expired due to Term

• Current Assignee: Medtentia International Ltd. Oy
• Original Assignee: Medtentia
• Inventors: Whedon, Randy, Ortiz, Mark, Spence, Paul A.
• Primary Examiner(s): Snow, Bruce Edward
• Application Number:
  US10/145,416
• Publication Number:
  US 20020173841A1
• Time in Patent Office: 721 Days
• Field of Search: 623/2.37, 623/2.38, 623/2.14, 623/2.15, 623/2.16, 623/2.17, 623/2.42, 623/900, 623/2.11, 623/2.2
• US Class Current: 623/2.17
• CPC Class Codes: A61F 2/2409 Support rings therefor, e.g. for connecting valves to tissue annuloplasty rings A61F2/2442
• CPC Class Codes: A61F 2/2427 Devices for manipulating or deploying heart valves during implantation
• CPC Class Codes: A61F 2/2445 Annuloplasty rings in direct contact with the valve annulus
• CPC Class Codes: A61F 2/2448 D-shaped rings
• CPC Class Codes: A61F 2/2457 Chordae tendineae prostheses
• CPC Class Codes: A61F 2/2466 Delivery devices therefor
• CPC Class Codes: A61F 2210/0033 electrically, e.g. heated by resistor
• CPC Class Codes: A61F 2230/0091 helically-coiled or spirally-coiled, i.e. having a 2-D spiral cross-section
• CPC Class Codes: A61F 2250/006 modular

Abstract

Devices for repairing and replacing a heart valve in various embodiments, the devices include at least first and second support rings connected together in a coiled configuration to abut opposite sides of a valve annulus. A replacement valve may be secured to the coil-shaped device. Various alternative fastening systems include suture fastening systems, mechanical fastening systems, shape memory alloy fastening systems and other fastening systems relying only on the resilience between adjacent coils. A method generally includes inserting a first end of the coil-shaped member through a valve annulus, rotating a first ring of the coil-shaped member into position on one side of the valve annulus and positioning at least a second ring of the coil-shaped member on an opposite side of the valve annulus.

Claims

1. A replacement valve device for replacing a heart valve of a patient, the device comprising:

a first support ring, and

a second support ring connected to said first support ring to form a coiled configuration, said first support ring configured to abut one side of an area of valve tissue and said second support ring configured to abut an opposite side of the area of the valve tissue to thereby trap the valve tissue therebetween, and

a replacement valve coupled to said second support ring and including at least one valve element extending within said second support ring for allowing and preventing blood flow therethrough.

2. The device of claim 1, wherein said replacement valve is coupled to said second support ring in a removable manner.

3. The device of claim 1, wherein said first and second support rings are contained in substantially different planes.

4. The device of claim 1, wherein said second support ring includes a cuff containing a movable fastening element which is engageable with said replacement valve to couple said replacement valve to said second support ring.

5. The device of claim 4, wherein said fastening element is formed from a shape memory alloy.

6. A method of replacing a heart valve of a patient, the method comprising:

inserting a first end of a coil-shaped support through an area of valve tissue,

rotating at least a first ring of the coil-shaped support to position the first ring on a first side of the valve tissue,

positioning at least a second ring of the coil-shaped support on an opposite second side of the valve tissue, and

coupling a replacement valve to at least one of the first and second rings.

7. The method of claim 6, wherein the valve tissue is an annulus associated with a native heart valve.