Signal transmitting and lesion excluding heart implants for pacing defibrillating and/or sensing of heart beat

• US 8,123,668 B2
• Filed: 09/28/2006
• Issued: 02/28/2012
• Est. Priority Date: 09/28/2006
• Status: Active Grant

• Current Assignee: Baxano, Inc. (Baxano Surgical, Inc.), Bioventrix, Inc.
• Original Assignee: Bioventrix, Inc.
• Inventors: Annest, Lon S., Bertolero, Arthur A., Swanson, David K.
• Primary Examiner(s): Layno, Carl H
• Assistant Examiner(s): PORTER, JR, GARY A
• Application Number:
  US11/536,553
• Publication Number:
  US 20080082132A1
• Time in Patent Office: 1,979 Days
• Field of Search: 600 16- 18, 607/2, 607/4, 607/5, 607/6, 607/9
• US Class Current: 600/16
• CPC Class Codes: A61B 17/12122 within the heart for closing a cardiac septal defect A61B17/0057
• CPC Class Codes: A61B 17/1215 comprising additional materials, e.g. thrombogenic, having filaments, having fibers, being coated
• CPC Class Codes: A61F 2/2487 Devices within the heart chamber, e.g. splints
• CPC Class Codes: A61N 1/057 Anchoring means; Means for fixing the head inside the heart
• CPC Class Codes: A61N 1/3627 for treating a mechanical deficiency of the heart, e.g. congestive heart failure or cardiomyopathy
• CPC Class Codes: A61N 1/3956 Implantable devices for applying electric shocks to the heart, e.g. for cardioversion
• CPC Class Codes: A61N 1/3987 characterised by the timing or triggering of the shock

Abstract

Devices, systems, and methods for treating a heart of a patient may make use of structures which limit a size of a chamber of the heart, such as by deploying a tensile member to bring a wall of the heart toward (optionally into contact with) a septum of the heart. The implant may include an electrode or other structure for applying pacing signals to one or both ventricles of the heart, for defibrillating the heart, for sensing beating of the heart or the like. A wireless telemetry and control system may allowing the implant to treat congestive heart failure, monitor the results of the treatment, and apply appropriate electrical stimulation.

Claims

1. A method for treating a heart, the heart having a first chamber bordered by a septum and a wall, the heart having a second chamber separated from the first chamber by the septum, the method comprising:

deploying an implant into the septum and into the wall, the implant including a tensile member and a lead extending from adjacent the tensile member;

tensioning the tensile member between the septum and the wall to limit a dimension of the first chamber, wherein the tensile member draws tissue of the wall and the septum through which the tensile member passes into permanent engagement;

deploying the at least one lead from an epicardial surface of the heart to a contractile tissue at a different location on the epicardial surface of the heart;

transmitting signals between the implant and the heart with an electrode surface of the lead, wherein the electrode surface contacts contractile tissue, and wherein the signals are transmitted transceptally along an axis of the tensile member; and

pacing, defibrillating, and/or sensing characteristics of the heart using the transmitted signals.

2. The method of claim 1, wherein the chamber comprises a left ventricle of the heart, and wherein the wall and septum engage each other sufficiently to effectively exclude a portion of the wall and septum from the functional portion of the left ventricle, scar tissue extending along the excluded portion.

3. The method of claim 1 wherein the contractile tissue is contractile tissue of the wall, and wherein the implant further comprises an additional lead extending to a contractile tissue of the septum.

4. The method of claim 1 wherein the lead is disposed within a lumen of the implant such that the lead traverses the septum and the wall through the lumen.

5. The method of claim 1, wherein the lead extends from the epicardial surface of the heart and re-enters epicardial tissue at a different location.

6. The method of claim 1, further comprising sensing contractile heart tissue signals of the left ventricle and/or right ventricle using the implant.

7. The method of claim 1, further comprising defibrillating the heart using the implant.

8. The method of claim 1, further comprising:

anchoring a first end of the tensile member to the septum with a first anchor; and

anchoring a second end of the tensile member to the wall with a second anchor.

9. The method of claim 8, wherein the anchoring of the first end of the tensile member to the septum is done so as to effectively seal the septum around transceptally transmitted signals.

10. The method of claim 8, further comprising transmitting the signals between the implant and the heart with an electrode surface of at least one of the anchors, wherein the signals comprise defibrillation signals.

11. The method of claim 10, wherein the implant extends through the wall, the second anchor engaging and applying the signals to an epicardial surface of the wall.

12. The method of claim 11, wherein the defibrillation signals are applied between the second anchor of the implant and a right atrium defibrillation lead.

13. The method of claim 8, further comprising applying the signals to the heart by pacing the heart with the lead of the implant, the lead being separated from the anchors.

14. The method of claim 8, further comprising sensing contraction using the lead of the implant, wherein the sensing comprises measuring heart contractile signals using the lead.

15. The method of claim 1, wherein the implant has a first mode and a second mode, the implant in the first mode wirelessly transmitting output signals indicating beating of the heart, the implant in the second mode pacing the heart or defibrillating the heart.

16. The method of claim 1, further comprising isolating transceptal signals from the septum with insulation extending along an axis of the tensile member.