System for Treating Mitral Valve Regurgitation

• US 20070203391A1
• Filed: 02/23/2007
• Published: 08/30/2007
• Est. Priority Date: 02/24/2006
• Status: Abandoned Application

• Current Assignee: Medtronic Vascular, Inc. (Medtronic Plc)
• Original Assignee: Medtronic Vascular, Inc. (Medtronic Plc)
• Inventors: Rafiee, Nasser, Finney, Michael, House, Morgan, Bloom, Eliot
• Application Number:
  US11/678,466
• Publication Number:
  US 20070203391A1
• Time in Patent Office: Days
• US Class Current: 600/37
• 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 17/0401 Suture anchors, buttons or pledgets, i.e. means for attaching sutures to bone, cartilage or soft tissue; Instruments for applying or removing suture anchors A61B17/0642 takes precedence; fixation devices for tendons or ligaments A61F2/0811
• CPC Class Codes: A61B 17/0482 Needle or suture guides guides for drills, pins or wire A61B17/17; for puncturing needles A61B17/3403
• CPC Class Codes: A61B 2017/00247 Making holes in the wall of the heart, e.g. laser Myocardial revascularization
• CPC Class Codes: A61B 2017/00867 shape memory effect for prostheses A61F2210/0014
• CPC Class Codes: A61B 2017/06052 Needle-suture combinations in which a suture is extending inside a hollow tubular needle, e.g. over the entire length of the needle hollow suture needles A61B2017/061
• CPC Class Codes: A61B 2018/00392 Transmyocardial revascularisation

Abstract

A system for treating mitral valve regurgitation comprising at least delivery catheters, puncture catheters, and tensioning devices. The devices include tension members linking a proximal anchor and distal anchor that can be constructed from a tubular braded material and have internal reinforcing members. In some embodiments, the anchors and tension members may flex in response to a heart beat. The system can also include temporary anchors so a clinician can review and adjust the vector of the tension member. Delivery catheters can also include temporary anchors to secure the catheter in position. When positioned across the left ventricle of a heart, the device can reduce the lateral distance between the walls of the ventricle and thus allow better coaption of the mitral valve leaflets thereby reducing heart valve regurgitation.

Claims

1. A system for treating heart valve regurgitation, comprising:

a delivery catheter;

means for penetrating the walls of a heart chamber;

a device for treating heart valve regurgitation by applying tension across a hear chamber to reduce the lateral distance between two walls of the chamber; and

means for temporarily securing the delivery catheter in place within a heart chamber while the device for treating heart valve regurgitation is placed in a heart chamber.

2. The system of claim 1 wherein the delivery catheter has a selectively formable distal section that can be formed into at least two curved portions.

3. The system of claim 2 wherein the wherein the shape of one of the at least two curved portions is complementary to the interior shape of a chamber of a heart such that the delivery catheter can be braced against the walls of a heart chamber on opposite sides of the chamber.

4. The system of claim 2 wherein the directional orientation of the distal end of the delivery catheter can be changed by manipulating at least one catheter control member.

5. The system of claim 1 wherein the means for penetrating the walls of a heart chamber is a puncture catheter.

6. The system of claim 1 wherein the device for treating heart valve regurgitation comprises:

an elongated tension member;

a braided distal anchor member attached to a distal end of the tension member;

a braided proximal anchor member; and

means for securing the tension member such that it is fixedly attached to the proximal anchor member. The system of claim 6 wherein the anchors are constructed from a tubular braided section of material.

7. The system of claim 6 wherein the anchors are made from a material selected from a group consisting of a nickel-titanium alloy, a nickel-cobalt alloy, a cobalt alloy, a thermoset plastic, stainless steel, a biocompatible shape-memory material, a biocompatible superelastic material, and a combination thereof.

8. The system of claim 6 wherein at least one of the braided anchor members further comprises a plurality of flexible struts.

9. The system of claim 1 wherein the means for temporarily securing the delivery catheter in place within a heart chamber is a temporary anchor.

13. The system of claim 1 wherein at least a portion of the device for treating heart valve regurgitation includes a therapeutic agent selected from a group consisting of an antithrombotic, an anticoagulant, an antibiotic, an anti-inflammatory, and a combination thereof.

17. The system of claim 1 wherein at least a portion of the device for treating mitral valve regurgitation includes a therapeutic agent selected from a group consisting of an antithrombotic, an anticoagulant, an antibiotic, an anti-inflammatory, and a combination thereof.

10. The system of claim 10 wherein the delivery catheter has an anchor lumen and the temporary anchor is an elongated section of shape memory material.

12. The system of claim 10 wherein the temporary anchor comprises at least two braided anchor members.

11. The system of claim 11 wherein a distal end of the anchor can be extended from the delivery catheter into the wall of a heart chamber and the anchor can assume a shape that temporarily prevents it from being extracted from the wall of the heart chamber until the anchor is withdrawn into the delivery catheter.

14. A system for treating mitral valve regurgitation, comprising:

a delivery catheter having a selectively formable distal section that can be formed into at least two curved portions;

a puncture catheter;

a device for treating mitral valve having an elongated tension member,

a braided distal anchor member attached to a distal end of the tension member;

a braided proximal anchor member, and means for securing the tension member such that it is fixedly attached to the proximal anchor member; and

at least one temporary for temporarily securing the delivery catheter in place within a heart chamber.

15. The system of claim 15 wherein the shape of one of the at least two curved portions is complementary to the interior shape of a chamber of a heart such that the delivery catheter can be braced against the walls of a heart chamber on opposite sides of the chamber and directional orientation of the distal end of the delivery catheter can be changed by manipulating at least one catheter control member.

16. The system of claim 15 wherein at least one of the braided anchor members further comprises a plurality of flexible struts.