TRANSEPTAL LEAD

• US 20090198297A1
• Filed: 04/01/2009
• Published: 08/06/2009
• Est. Priority Date: 08/18/2004
• Status: Active Grant

• Current Assignee: Yongxing Zhang, Yunlong Zhang
• Original Assignee: Yongxing Zhang, Yunlong Zhang
• Inventors: Zhang, Yongxing, Zhang, Yunlong
• Granted Patent: US 8,781,604 B2
• Time in Patent Office: Days
• US Class Current: 607/5
• CPC Class Codes: A61N 1/0568 with drug delivery
• CPC Class Codes: A61N 1/057 Anchoring means; Means for fixing the head inside the heart
• CPC Class Codes: A61N 1/0573 chacterised by means penetrating the heart tissue, e.g. helix needle or hook

Abstract

A lead includes a lead body and an electrode disposed proximate a distal end of the lead body. A retaining member is disposed proximate the distal end of the lead and adapted to retain the electrode proximate an interatrial septum when the retaining member is located on a left atrial side of the interatrial septum.

Claims

1. A method comprising:

inserting a distal tip of a lead through an interatrial septum;

deploying a retaining member on the lead on a left atrial side of the interatrial septum such that an electrode on the lead contacts the interatrial septum; and

delivering energy pulses to the interatrial septum via the electrode.

2. The method of claim 1, wherein delivering energy pulses includes delivering defibrillation pulses.

3. The method of claim 1, wherein delivering energy pulses includes delivering pacing pulses.

4. The method of claim 1, wherein deploying a retaining member includes expanding a balloon on the left atrial side of the interatrial septum.

5. The method of claim 1, wherein deploying a retaining member includes opening an umbrella structure on the left atrial side of the interatrial septum.

6. The method of claim 1, wherein deploying a retaining member includes allowing a pre-biased section of the lead body to return to its pre-biased shape on the left atrial side of the interatrial septum.

7. A method comprising:

inserting a distal tip of a lead through an interatrial septum;

deploying a retaining member on the lead on a left atrial side of the interatrial septum;

providing a curved section on the lead so as to bias an electrode disposed on the lead towards a right atrial side surface of the interatrial septum; and

delivering energy pulses to the interatrial septum via the electrode.

8. The method of claim 7, wherein delivering energy pulses includes delivering defibrillation pulses.

9. The method of claim 7, wherein deploying a retaining member includes expanding a balloon on the left atrial side of the interatrial septum.

10. The method of claim 7, wherein deploying a retaining member includes opening an umbrella structure on the left atrial side of the interatrial septum.

11. The method of claim 7, wherein deploying a retaining member includes allowing a pre-biased section of the lead body to return to its pre-biased shape on the left atrial side of the interatrial septum.

12. The method of claim 7, further including providing a less stiff section on the lead so that the electrode is between the less stiff section and the curved section.

13. A method comprising:

providing a lead including a lead body extending from a proximal end to a distal end and having an intermediate portion, the lead having a first electrode disposed proximate the distal end of the lead body, a retaining member disposed proximate the distal end of the lead, and a defibrillation shock electrode disposed along the lead proximal from the first electrode, wherein the lead body further includes a pre-biased curved section located between the retaining member and the defibrillation shock electrode;

inserting the distal end of the lead through an interatrial septum; and

deploying the retaining member on the lead on a left atrial side of the interatrial septum such that the first electrode contacts the interatrial septum and the defibrillation shock electrode is biased toward the intratrial septum by the pre-biased curved section.

14. The method of claim 13, wherein deploying a retaining member includes expanding a balloon on the left atrial side of the interatrial septum.

15. The method of claim 13, wherein deploying a retaining member includes opening an umbrella structure on the left atrial side of the interatrial septum.

16. The method of claim 13, wherein deploying a retaining member includes allowing a pre-biased section of the lead body to return to its pre-biased shape on the left atrial side of the interatrial septum.

17. The method of claim 13, further including delivering energy pulses from at least one of the electrodes.

18. The method of claim 17, wherein delivering energy pulses includes delivering pacing pulses.

19. The method of claim 17, wherein delivering energy pulses includes delivering defibrillation pulses.

20. A method comprising:

providing a lead including a lead body extending from a proximal end to a distal end and having an intermediate portion, the lead body including a shocking electrode disposed proximate the intermediate portion of the lead body, and a retaining member disposed on the lead body and located distally from the shocking electrode, wherein the lead body includes a pre-biased curved section between the shocking electrode and the retaining member;

inserting the distal end of the lead through an interatrial septum; and

deploying the retaining member on the lead on a left atrial side of the interatrial septum such that the defibrillation shock electrode is biased toward the intratrial septum by the pre-biased curved section.

21. The method of claim 20, wherein deploying a retaining member includes expanding a balloon on the left atrial side of the interatrial septum.

22. The method of claim 20, wherein deploying a retaining member includes opening an umbrella structure on the left atrial side of the interatrial septum.

23. The method of claim 20, wherein deploying a retaining member includes allowing a pre-biased section of the lead body to return to its pre-biased shape on the left atrial side of the interatrial septum.

24. The method of claim 20, wherein the lead body further includes a less stiff section located proximally from the shocking electrode.

25. The method of claim 20, wherein the pre-biased curved section defines an angle in the lead body of about between 85 degrees to about 95 degrees.