Device and method for treatment of mitral insufficiency

• US 7,637,945 B2
• Filed: 12/20/2006
• Issued: 12/29/2009
• Est. Priority Date: 06/29/1999
• Status: Expired due to Fees

• Current Assignee: Edwards Lifesciences AG (Edwards Lifesciences Corporation)
• Original Assignee: Edwards Lifesciences Corporation
• Inventors: Solem, Jan Otto, Kimblad, Per Ola
• Primary Examiner(s): GHERBI, SUZETTE JAIME J
• Application Number:
  US11/643,352
• Publication Number:
  US 20070100442A1
• Time in Patent Office: 1,105 Days
• Field of Search: 623 236- 237
• US Class Current: 623/2.36
• CPC Class Codes: A61B 17/00234 for minimally invasive surgery A61B17/0218, A61B17/0469, A61B17/12013, A61B17/1285, A61B17/29, A61B17/320016 take precedence
• CPC Class Codes: A61B 2017/00243 cardiac
• CPC Class Codes: A61B 2017/00867 shape memory effect for prostheses A61F2210/0014
• CPC Class Codes: A61F 2/2451 Inserts in the coronary sinus for correcting the valve shape
• CPC Class Codes: A61F 2002/826 more than one stent being applied sequentially
• CPC Class Codes: Y10S 623/903 Blood vessel

Abstract

A device for treatment of mitral annulus dilatation comprises an elongate body having two states. In a first of these states the elongate body is insertable into the coronary sinus and has a shape adapting to the shape of the coronary sinus. When positioned in the coronary sinus, the elongate body is transferable to the second state assuming a reduced radius of curvature, whereby the radius of curvature of the coronary sinus and the radius of curvature as well as the circumference of the mitral annulus is reduced.

Claims

1. A system for treatment of mitral valve dilatation, comprising:

an elongate body including a distal anchor configured to be positioned within and anchored to a coronary sinus of a heart adjacent to a mitral valve annulus within the heart, a proximal anchor configured to be positioned within the heart proximal to the distal anchor and adjacent to the mitral valve annulus within the heart, and an interconnecting part permanently attached to the distal and proximal anchors;

a cover sheet having a distal end, a proximal end and a lumen that receives the elongate body, the cover sheet being guidable into the coronary sinus adjacent to the mitral valve annulus and being retractable for deploying the distal and proximal anchors of the device within the coronary sinus adjacent to the mitral valve annulus; and

a detachable delivery instrument coupled to at least the proximal anchor of the elongate body and extending proximally though the lumen and out of the catheter proximal end, the delivery instrument being configured for positioning and releasing the elongate body in the coronary sinus;

wherein the elongate body is configured to effect the shape of the mitral valve annulus after deployment in the coronary sinus.

2. The system of claim 1 whereby, when the distal anchor is released from the cover sheet in the coronary sinus, the proximal anchor may be displaced proximally by proximally pulling on the delivery instrument to effect the shape of the mitral valve annulus and thereafter released to maintain the effect on the mitral valve annulus.

3. The system of claim 1 wherein the proximal anchor, when deployed, is anchored against distal movement and moveable in a proximal direction.

4. The system of claim 1 wherein the distal anchor is self deploying upon release in the coronary sinus.

5. The system of claim 1 wherein the proximal anchor is self-deploying upon release in the coronary sinus.

6. The system of claim 1 wherein the interconnecting part has a fixed length.

7. The system of claim 6 wherein the interconnecting part is configured to bend to an original shape after implantation, thereby shortening the distance between the distal and proximal anchors.

8. The system of claim 1 wherein the interconnecting member is stretchable to a maximum length.

9. The system of claim 1 wherein the interconnecting member is bendable and non-stretchable.