Fixation of a left heart medical lead in the coronary sinus

• US 20040243210A1
• Filed: 05/30/2003
• Published: 12/02/2004
• Est. Priority Date: 05/30/2003
• Status: Abandoned Application

• Current Assignee: Pacesetter Incorporated (Abbott Laboratories)
• Original Assignee: Pacesetter Incorporated (Abbott Laboratories)
• Inventors: Chitre, Yougandh, Morgan, Kevin L., Bornzin, Gene A., Doan, Phong D., Helland, John R.
• Application Number:
  US10/449,972
• Publication Number:
  US 20040243210A1
• Time in Patent Office: Days
• US Class Current: 607/122
• CPC Class Codes: A61N 1/056 Transvascular endocardial electrode systems
• CPC Class Codes: A61N 2001/0585 Coronary sinus electrodes

Abstract

An implantable lead is provided for delivering electrical therapy. The lead, suitable for placement and passive anchoring in a vessel within the coronary sinus region of a patient'"'"'s heart, comprises a lead body having a distal end carrying at least one electrode electrically connected to a terminal contact on a proximal end of the lead body, the lead body further including an insulative, tubular housing. A longitudinally extending coil member is contained within the housing, the housing and the coil member having distal ends provided with corresponding, substantially matching preformed bends, the distal end of the housing being thereby adapted to exert a sufficient bias against the inner wall of the vessel within which the lead is placed to stabilize the lead in said vessel.

Claims

1. An implantable lead for delivering electrical therapy, said lead being suitable for placement and passive anchoring in a vessel within the coronary sinus region of a patient'"'"'s heart, the lead comprising:

a lead body having a distal end carrying at least one electrode electrically connected to a terminal contact on a proximal end of the lead body, the lead body including an insulative, tubular housing; and

a longitudinally extending coil member within the housing, the housing and the coil member having distal ends provided with corresponding, substantially matching preformed bends, the distal end of the housing being thereby adapted to exert a sufficient bias against the inner wall of the vessel within which the lead is placed to stabilize the lead in said vessel.

2. The lead of claim 1 in which:

the coil member defines a passage for guiding a stylet or a guide wire.

3. The lead of claim 2 in which:

the housing comprises a multilumen structure, the coil member occupying one of the lumens.

4. The lead of claim 3 in which:

an electrical conductor connects the at least one electrode with the terminal contact, the electrical conductor occupying a second lumen in the housing.

5. The lead of claim 4 in which:

the electrical conductor comprises a coil conductor.

6. The lead of claim 5 in which:

both the coil member and the electrical coil conductor have matching preformed bends.

7. The lead of claim 1 in which:

the coil member comprises an electrical conductor connecting the at least one electrode with the terminal contact.

8. The lead of claim 7 in which:

the at least one electrode comprises a tip electrode.

9. The lead of claim 8 further comprising:

at least one ring electrode electrically connected by a second conductor to a second terminal contact on the proximal end of the lead body, the second conductor being contained within the housing.

10. The lead of claim 9 in which:

the second conductor comprises a coil conductor.

11. The lead of claim 10 in which:

the first mentioned conductor and the second conductor are disposed coaxially.

12. The lead of claim 11 in which:

the housing and both the first mentioned conductor and the second conductor have substantially matching bends preformed along the distal end of the lead body.

13. An implantable lead for delivering electrical therapy, the lead being suitable for placement in a vessel within the coronary sinus region of a patient'"'"'s heart and to be passively stabilized within said vessel, the lead comprising:

a lead body having a distal end carrying at least one electrode electrically connected by a conductor to a terminal contact on a proximal end of the lead body, the lead body comprising a longitudinally extending, insulative housing containing the conductor, both the housing and the conductor having substantially matching bends preformed along the distal end of the lead body, the distal end of the lead body being thereby adapted to exert a sufficient bias against the inner wall of the vessel to stabilize the lead in said vessel.

14. The lead of claim 13 in which:

the at least one electrode comprises a tip electrode and the conductor comprises a coil conductor.

15. The lead of claim 13 further comprising:

at least one ring electrode electrically connected by a second conductor to a second terminal contact on the proximal end of the lead body, the second conductor being contained within the housing.

16. The lead of claim 15 in which:

the second conductor is a coil conductor.

17. The lead of claim 16 in which:

the first mentioned conductor and the second conductor are disposed coaxially.

18. The lead of claim 17 in which:

the housing and both the first mentioned conductor and the second conductor have substantially matching bends preformed along the distal end of the lead body.

19. The lead of claim 15 in which:

the housing comprises a multilumen housing, the first mentioned conductor and the second conductor occupying separate lumens within the housing.

20. The lead of claim 19 further comprising:

a guide coil defining a passage for a stylet or guide wire, the guide coil occupying a third lumen within the housing.