Method and device for treating dysfunctional cardiac tissue

• US 10,335,279 B2
• Filed: 02/12/2016
• Issued: 07/02/2019
• Est. Priority Date: 08/19/2005
• Status: Active Grant

• Current Assignee: Bioventrix, Inc.
• Original Assignee: Bioventrix, Inc.
• Inventors: Chin, Sing-Fatt, Annest, Lon, O'Reilly, Robert
• Primary Examiner(s): Dorna, Carrie R
• Application Number:
  US15/043,274
• Publication Number:
  US 20160262891A1
• Time in Patent Office: 1,236 Days
• 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 17/0467 Instruments for cutting sutures surgical cutting instruments A61B17/32
• CPC Class Codes: A61B 17/0469 Suturing instruments for use in minimally invasive surgery, e.g. endoscopic surgery
• CPC Class Codes: A61B 17/06004 Means for attaching suture to needle tipping A61B17/06195; connecting wire to other metallic objects B21F15/00
• CPC Class Codes: A61B 17/0644 penetrating the tissue, deformable to closed position
• CPC Class Codes: A61B 17/068 Surgical staplers , e.g. containing multiple staples or clampsstaplers containing only one staple A61B17/10; magazines or containers for staples A61B17/105; for performing anastomosis A61B17/115; staplers in general B25C5/00
• CPC Class Codes: A61B 17/1227 Spring clips
• CPC Class Codes: A61B 17/1285 for minimally invasive surgery
• CPC Class Codes: A61B 2017/00243 cardiac
• CPC Class Codes: A61B 2017/0404 Buttons
• 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 2017/06176 with protrusions, e.g. barbs
• CPC Class Codes: A61B 2017/0647 having one single leg, e.g. tacks
• CPC Class Codes: A61B 2017/306 holding by means of suction
• CPC Class Codes: A61B 2017/308 with suction cups
• CPC Class Codes: A61F 2/2481 Devices outside the heart wall, e.g. bags, strips or bands
• CPC Class Codes: A61F 2/2487 Devices within the heart chamber, e.g. splints

Abstract

Various methods and devices are provided for reducing the volume of the ventricles of the heart. In one embodiment, a method for reducing the ventricular volume of a heart chamber is provided including the steps of inserting an anchoring mechanism onto dysfunctional cardiac tissue, deploying one or more anchors into the dysfunctional cardiac tissue, raising the dysfunctional cardiac tissue using the anchors, and securing the anchors to hold the dysfunctional cardiac tissue in place. Further, a device for reducing the volume of the ventricles of a heart chamber is provided where the device has one or more clips for placement on dysfunctional cardiac tissue of a heart, one or more anchors for deployment and securement into the dysfunctional cardiac tissue, and a lifting mechanism for raising the one or more anchors and the dysfunctional cardiac tissue.

Claims

1. A patch for reducing a volume of a ventricle of a heart chamber comprising:

a main body that is positionable about dysfunctional tissue of the ventricle, the main body comprising a woven fabric material; and

a deformable slit that extends upward from the main body, the deformable slit comprising a malleable metal material, the deformable slit having a shape of an elongated ellipse and forming a continuous, closed loop configured to allow the dysfunctional tissue to be pulled through the loop, wherein;

the woven fabric material extends continuously around the loop;

opposing walls of the deformable slit are configured to be displaced inwardly after the dysfunctional tissue is pulled through the loop to secure the patch about the dysfunctional tissue and reduce the volume of the ventricle; and

the opposing walls of the deformable slit comprise a more parallel configuration after the opposing walls are displaced inwardly.

2. The patch of claim 1, wherein the malleable metal material of the deformable slit is fully annealed stainless steel.

3. The patch of claim 1, further comprising one or more anchors that are attachable to the dysfunctional tissue and that are operable to pull the dysfunctional tissue through the loop of the deformable slit.

4. The patch of claim 1, further comprising a suction device that is attachable to the dysfunctional tissue and operable to pull the dysfunctional tissue through the loop of the deformable slit.

5. The patch of claim 1, wherein the main body extends laterally and outwardly from longitudinal edges of the deformable slit.

6. The patch of claim 1, wherein the main body is attached to longitudinal edges of the deformable slit.

7. A patch for reducing a volume of a ventricle of a heart chamber comprising:

a main body that is positionable about dysfunctional tissue of the ventricle; and

a deformable slit that forms a continuous, closed loop, wherein the loop defines an opening that allows the dysfunctional tissue to be pulled through the opening, wherein;

the main body is attached to the deformable slit and extends continuously around an entire periphery of the deformable slit; and

the opening of the deformable slit is configured to be reduced after the dysfunctional tissue is pulled therethrough to secure the patch about the dysfunctional tissue and reduce the volume of the ventricle.

8. The patch of claim 7, wherein the main body comprises a woven fabric material.

9. The patch of claim 7, wherein the deformable slit comprises a malleable metal material.

10. The patch of claim 9, wherein the malleable metal material is fully annealed stainless steel.

11. The patch of claim 7, wherein the deformable slit has an initial elongated ellipse shape prior to reduction of the opening and a more parallel configuration after reduction of the opening.

12. A method for reducing a volume of a ventricle of a heart chamber, the method comprising:

placing a patch having a deformable slit and an outward flange around the deformable slit onto dysfunctional tissue, wherein the outward flange is attached to and extends continuously around an entire periphery of the deformable slit, and wherein the patch forms a continuous, closed loop;

pulling the dysfunctional tissue through the deformable slit on the patch; and

securing the tissue to the deformable slit.

13. The method of claim 12, further comprising positioning the deformable slit onto the dysfunctional tissue such that a center of the deformable slit is within 2-3 cm of a left anterior descending artery (LAD).

14. The method of claim 13, wherein the deformable slit is further positioned onto the dysfunctional tissue so that a long axis of the deformable slit is generally parallel to the LAD.

15. The method of claim 12, further comprising pulling the dysfunctional tissue through the deformable slit using one or more anchors placed through the dysfunctional tissue.

16. The method of claim 12, further comprising pulling the dysfunctional tissue through the deformable slit using a suction device.

17. The method of claim 12, further comprising reducing an opening of the deformable slit after the dysfunctional tissue has been pulled through the deformable slit to hold the dysfunctional tissue in position, wherein reducing the opening of the deformable slit comprises moving opposing edges of the opening toward one another.

18. The method of claim 12, further comprising sewing the patch to an epicardial surface of the dysfunctional tissue.

19. The method of claim 18, further comprising suturing the deformable slit to the dysfunctional tissue pulled through the deformable slit.

20. The method of claim 12, wherein the outward flange is formed of at least one of a thermoplastic elastomer material or silicone.