Body lumen device anchor, device and assembly

• US 8,062,358 B2
• Filed: 11/19/2004
• Issued: 11/22/2011
• Est. Priority Date: 05/08/2002
• Status: Active Grant

• Current Assignee: Cardiac Pacemakers Incorporated (Boston Scientific Corporation)
• Original Assignee: Cardiac Pacemakers Incorporated (Boston Scientific Corporation)
• Inventors: Reuter, David G., Kowalsky, Leonard, Mathis, Mark L., Beeson, Cruz
• Primary Examiner(s): Sweet; Thomas J
• Assistant Examiner(s): WOLF, MEGAN YARNALL
• Application Number:
  US10/994,161
• Publication Number:
  US 20050187619A1
• Time in Patent Office: 2,559 Days
• Field of Search: 623/2.36, 623/2.37
• US Class Current: 623/2.37
• CPC Class Codes: A61F 2/2451 Inserts in the coronary sinus for correcting the valve shape
• CPC Class Codes: A61F 2/2466 Delivery devices therefor
• CPC Class Codes: A61F 2002/91591 Locking connectors, e.g. using male-female connections
• CPC Class Codes: A61F 2210/0014 using shape memory or superelastic materials, e.g. nitinol
• CPC Class Codes: A61F 2220/0091 connected by a hinged linkage mechanism, e.g. of the single-bar or multi-bar linkage type
• CPC Class Codes: A61F 2230/0023 triangular
• CPC Class Codes: A61F 2250/0004 adjustable
• CPC Class Codes: A61F 2250/0008 for adjusting a position by translation along an axis or two perpendicular axes
• CPC Class Codes: A61F 2250/0012 for adjusting elasticity, flexibility, spring rate or mechanical tension
• CPC Class Codes: A61F 2250/0086 with bar code
• CPC Class Codes: A61F 2310/00017 Iron- or Fe-based alloys, e.g. stainless steel
• CPC Class Codes: A61F 2310/00023 Titanium or titanium-based alloys, e.g. Ti-Ni alloys

Abstract

An anchor anchors a therapeutic device having an elongated body within a body lumen. The anchor includes a fixation member carried on the device which is adjustable from a first configuration that permits placement of the device in the body lumen to a second configuration that anchors the device within the body lumen. The anchor further includes a lock that locks the fixation member in the second configuration. The fixation member may be locked in any one of a plurality of intermediate points between the first configuration and a maximum second configuration.

Claims

1. A method of treating mitral valve regurgitation comprising:

inserting into a coronary sinus adjacent the mitral valve a device comprising expandable distal and proximal anchors;

locking the distal anchor in an expanded configuration by applying a distally directed force with a delivery device to move a first portion of the distal anchor with respect to a second portion of the distal anchor; and

moving the proximal anchor proximally within the coronary sinus to reduce mitral valve regurgitation.

2. The method of claim 1 wherein the locking step comprises holding a proximal portion of the device stationary.

3. The method of claim 1 wherein the locking step comprises moving the first portion of the distal anchor to a locked position.

4. The method of claim 3 wherein the locking step comprises moving the first portion of the distal anchor distally to a locked position.

5. The method of claim 1 wherein the moving step comprises moving the device proximally with a tether.

6. The method of claim 1 further comprising deploying the proximal anchor.

7. The method of claim 6 wherein the step of deploying the proximal anchor is performed prior to the moving step.

8. The method of claim 1 further comprising monitoring a patient parameter related to mitral valve regurgitation.

9. The method of claim 1 wherein mitral valve reduction occurs while moving the proximal anchor proximally within the coronary sinus.

10. A method of treating mitral valve regurgitation comprising:

inserting into a coronary sinus adjacent the mitral valve a device comprising expandable distal and proximal anchors;

locking the distal anchor in an expanded configuration by applying an external force with a delivery device to move a first portion of the distal anchor with respect to a second portion of the distal anchor; and

moving the proximal anchor proximally within the coronary sinus to reduce mitral valve regurgitation,

wherein the locking step comprises pushing the first portion of the distal anchor distally.

11. A method of treating mitral valve regurgitation comprising:

delivering a therapy device within a delivery catheter to a coronary sinus, wherein the therapy device comprises a distal anchor, an expandable proximal anchor, and an elongate body extending between the distal and proximal anchors;

deploying the distal anchor from the delivery catheter to a self-expanded configuration in the coronary sinus;

locking the distal anchor in the coronary sinus in a locked configuration by applying a locking force on the distal anchor with a delivery device, wherein the locking step is performed after the distal anchor is deployed to the self-expanded configuration; and

moving the proximal anchor proximally within the coronary sinus to reduce mitral valve regurgitation after locking the distal anchor in the locked configuration.

12. The method of claim 11 further comprising collapsing the distal anchor within the delivery catheter.

13. The method of claim 12 wherein the locking step occurs before the collapsing step.

14. The method of claim 13 wherein collapsing the distal anchor comprises unlocking the distal anchor.

15. The method of claim 12 further comprising repositioning the device after collapsing the distal anchor.

16. The method of claim 15 further comprising re-expanding the distal anchor in the coronary sinus, wherein the re-expanding step occurs after the repositioning step.

17. The method of claim 11 wherein applying a locking force on the distal anchor with a delivery device comprises applying a locking force on the distal anchor with the delivery catheter.

18. The method of claim 17 further comprising collapsing the distal anchor within the delivery catheter, wherein collapsing the distal anchor within the delivery catheter comprises applying a collapsing force on the distal anchor with the delivery catheter.

19. The method of claim 18 wherein collapsing the distal anchor comprises fully collapsing the distal anchor within the delivery catheter.

20. The method of claim 11 further comprising deploying the proximal anchor.