Multifilament anchor for reducing a compass of a lumen or structure in mammalian body

• US 20060089711A1
• Filed: 09/22/2005
• Published: 04/27/2006
• Est. Priority Date: 10/27/2004
• Status: Abandoned Application

• Current Assignee: Medtronic Vascular, Inc. (Medtronic Plc)
• Original Assignee: Medtronic Vascular, Inc. (Medtronic Plc)
• Inventors: Dolan, Mark J.
• Application Number:
  US11/233,592
• Publication Number:
  US 20060089711A1
• Time in Patent Office: Days
• US Class Current: 623/2.370
• 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 17/0487 Suture clamps, clips or locks, e.g. for replacing suture knots; Instruments for applying or removing suture clamps, clips or locks suture anchors A61B17/0401; wound clamps or clips A61B17/08; ligaturing clamps or clips A61B17/122
• CPC Class Codes: A61B 17/06166 Sutures suture materials A61L17/00; manufacture of artificial threads D01D; treatment of threads D06M
• CPC Class Codes: A61B 17/12022 Occluding by internal devices, e.g. balloons or releasable wires plugging an opening in the wall of an organ A61B17/0057; occluders for the cervical canal A61F6/146; vas deferens occluders A61F6/20
• CPC Class Codes: A61B 2017/00243 cardiac
• CPC Class Codes: A61B 2017/00867 shape memory effect for prostheses A61F2210/0014
• CPC Class Codes: A61B 2017/0412 having anchoring barbs or pins extending outwardly from suture anchor body
• CPC Class Codes: A61B 2017/0437 the barbs being resilient or spring-like
• CPC Class Codes: A61B 2017/0458 Longitudinal through hole, e.g. suture blocked by a distal suture knot
• CPC Class Codes: A61B 2017/0464 for soft tissue
• CPC Class Codes: A61B 2017/0496 for tensioning sutures
• CPC Class Codes: A61F 2/2487 Devices within the heart chamber, e.g. splints

Abstract

A system for reducing a compass of an opening or structure in a mammalian body comprises an anchor having a central aperture, a tensioner having a plurality of openings, and a plurality of filaments, each including a retaining member affixed to a distal portion of the filament. The tensioner is receivable within the anchor central aperture. A proximal portion of each filament is receivable within a tensioner opening. A method of reducing a compass of a lumen or structure in a mammalian body comprises delivering the anchor to a first location proximate target tissue, delivering the filaments to a second location proximate the target tissue, threading the filaments through the anchor and the tensioner openings, positioning the tensioner in the anchor aperture, retaining the filaments in the tensioner, and rotating the tensioner to twist the filaments, thereby shortening the length of the filaments and increasing the tension across the system.

Claims

1. A device for anchoring multiple filaments, comprising:

an anchor having a central aperture formed therein; and

a tensioner receivable within the central aperture of the anchor, the tensioner including a plurality of openings to receive a plurality of filaments.

2. The device of claim 1 wherein the tensioner is rotatable within the central aperture of the anchor.

3. The device of claim 2 wherein the anchor and the tensioner include complementary structures that prevent the tensioner from rotating in one of a clockwise or a counterclockwise direction.

4. The device of claim 2 wherein the tensioner includes a coupling structure to releasably couple the tensioner with a torquing device.

5. The device of claim 1 wherein the anchor includes a plurality of barbs positioned on an outer surface of the anchor.

6. The device of claim 1 wherein a locking member positioned adjacent to a tensioner opening retains a filament within the opening.

7. The device of claim 1 wherein the anchor comprises a perforated plate.

8. The device of claim 1 wherein the anchor comprises a tubular member.

9. The device of claim 1 wherein the device anchors multiple filaments to cardiac tissue.

10. A system for reducing a compass of a lumen or structure in a mammalian body, comprising:

an anchor having a central aperture formed therein;

a tensioner receivable within the central aperture of the anchor, the tensioner including a plurality of openings; and

a plurality of filaments, each filament including a retaining member affixed to a distal portion of the filament, wherein a proximal portion of each filament is receivable within a tensioner opening.

11. The system of claim 10 further comprising:

a locking member positioned adjacent to each tensioner opening, wherein each locking member retains a filament within the opening.

12. The system of claim 10 wherein the tensioner is rotatable within the central aperture of the anchor.

13. The system of claim 11 wherein the anchor and the tensioner include complementary structures that prevent the tensioner from rotating in one of a clockwise or a counterclockwise direction.

14. The system of claim 12 wherein the anchor includes a plurality of barbs positioned on an outer surface of the anchor.

15. The system of claim 11 wherein rotating the tensioner reduces the radial dimension of a mitral valve annulus.

16. A method of reducing a compass of a lumen or structure in a mammalian body, the method comprising:

delivering an anchor to a first location proximate a lumen or structure within a mammalian body;

delivering a plurality of filaments to a second location across the lumen or structure from the anchor, the filaments being positioned spaced apart one from another;

threading the filaments through the anchor;

positioning the filaments in openings formed in a tensioner; and

adjusting the filaments within the openings to reduce a compass of the lumen or structure in the mammalian body.

17. The method of claim 16 further comprising:

rotating the tensioner to adjust the filaments.

18. The method of claim 16 wherein delivering an anchor to a first location proximate target tissue within the mammalian body comprises delivering the anchor into muscle tissue of the left ventricle wall adjacent to the mitral valve.

19. The method of claim 18 wherein delivering a plurality of filaments to a second location proximate the target tissue comprises delivering the filaments into an atrial septal wall adjacent to the mitral valve.

20. The method of claim 16 wherein adjusting the positioned filaments within the tensioner reduces a diameter of a mitral valve annulus to effect a mitral valve repair.