# US 10,499,941 B2 · Mitral valve repair devices

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- Number: US 10,499,941 B2
- Document ID: US10499941B2
- Status: Granted
- Kind: B2
- Application number: 14/651,793
- Filed: 2013-12-13
- Published: 2015-11-05
- Granted: 2019-12-10
- Earliest claimed: 2012-12-14
- Assignees: Mayo Foundation for Medical Education and Research
- Applicants: Mayo Foundation for Medical Education and Research
- Inventors: Rakesh M. Suri
- Web page: https://patentgrep.com/patent/US10499941B2

## CPC

- A61B 17/29: Forceps for use in minimally invasive surgery
- 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)}
- A61B 17/0643: {with separate closing member, e.g. for interlocking with staple}
- A61B 17/0686: {having a forming anvil staying below the tissue during stapling}
- A61F 2/2457: {Chordae tendineae prostheses}
- A61B 17/0485: {Devices or means, e.g. loops, for capturing the suture thread and threading it through an opening of a suturing instrument or needle eyelet}
- A61B 17/122: Clamps or clips, e.g. for the umbilical cord {(for the vas deferens A61F6/206)}
- A61B 2017/00243: {cardiac}
- A61B 2017/00349: {Needle-like instruments having hook or barb-like gripping means, e.g. for grasping suture or tissue (A61B17/06066 takes precedence)}
- A61B 2017/0408: {Rivets}
- A61B 2017/0409: {Instruments for applying suture anchors}
- A61B 2017/0417: {T-fasteners}
- A61B 2017/0419: {H-fasteners}
- A61B 2017/2905: {flexible}
- A61F 2/2487: {Devices within the heart chamber, e.g. splints}
- A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D)
- A61F: FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS (dental prosthetics A61C)

## Abstract

This document provides devices and methods for repairing a prolapsing mitral valve leaflet using minimally invasive catheter based approaches. For example, percutaneous procedures that involve folding and securing a segment of a prolapsing leaflet onto or pulling and securing a segment of a prolapsing leaflet through part of the greater mitral valve leaflet are provided. In some cases, artificial chordae are installed to stabilize and maintain desired orientation of the leaflets.

## Claims

### Claim 1

A method for treating mitral valve prolapse, wherein said method comprises: (a) approaching a prolapsed leaflet using a minimally invasive catheter technique, (b) capturing an edge segment of the prolapsed leaflet using a grasping device, (c) repositioning the edge segment onto an atrial or ventricular surface of a body of the prolapsed leaflet, and (d) securing the edge segment to the atrial or ventricular surface of the body of the prolapsed leaflet using an attachment device, wherein the repositioning creates a fold in the prolapsed leaflet that results in tissue from the body of the prolapsed leaflet becoming a reconfigured edge of the prolapsed leaflet, wherein the reconfigured edge made of tissue from the body of the prolapsed leaflet apposes and coapts with an opposing leaflet to reduce mitral valve regurgitation and a longitudinal axis of the fold is parallel to a line of coaptation between the prolapsed leaflet and the opposing leaflet.

### Claim 2 (depends on 1)

The method of claim 1, wherein the prolapsed leaflet is constrained in a folded configuration as a result of the securing the edge segment onto the atrial or ventricular surface of the body of the prolapsed leaflet using the attachment device.

### Claim 3 (depends on 1)

The method of claim 1, wherein said attachment device comprises a suture or a clip device.

### Claim 4 (depends on 3)

The method of claim 3, wherein the suture or the clip device comprises one or more artificial chordae extending therefrom.

### Claim 5 (depends on 4)

The method of claim 4, further comprising anchoring the one or more artificial chordae to other tissue spaced apart from the prolapsed leaflet.

### Claim 6 (depends on 1)

The method of claim 1, wherein said repositioning comprises positioning at least a portion of said edge segment within a channel formed in said prolapsed leaflet.

### Claim 7 (depends on 1)

The method of claim 1, wherein said approaching comprises piercing an interatrial septum.

### Claim 8 (depends on 1)

The method of claim 1, wherein said approaching comprises piercing a heart apex.

### Claim 9 (depends on 1)

The method of claim 1, wherein the grasping device comprises two jaws, and
wherein, during the repositioning, one jaw of the two jaws is penetrating through the body of the prolapsed leaflet.