PULL THROUGH CORONARY SINUS PACING LEAD

• US 20130030512A1
• Filed: 07/27/2012
• Published: 01/31/2013
• Est. Priority Date: 07/28/2011
• Status: Active Grant

• Current Assignee: Oscor Inc
• Original Assignee: Oscor Inc
• Inventors: Osypka, Thomas P., McCready, James
• Granted Patent: US 8,712,548 B2
• Time in Patent Office: Days
• US Class Current: 607/122
• CPC Class Codes: A61M 25/104 used for angioplasty
• CPC Class Codes: A61N 1/056 Transvascular endocardial electrode systems
• CPC Class Codes: A61N 2001/0585 Coronary sinus electrodes

Abstract

A coronary sinus lead is disclosed that includes a lead body having opposed proximal and distal end portions, and an open-ended cavity formed in the distal end portion of the lead body for temporarily receiving an angioplasty balloon. The lead is configured for connection with a pacing device. A method of implanting the lead is also disclosed, which includes passing a coronary angioplasty balloon catheter over a length of guide wire extending through the coronary sinus, coronary veins, and collaterals so that the balloon is externalized. The method further includes inserting the balloon into an open cavity of the lead, inflating the balloon within the open cavity to temporarily engage a distal end portion of the lead to the catheter, and pulling the distal end portion of the lead though the coronary sinus and into a coronary vein by at least partially withdrawing the catheter from the coronary sinus.

Claims

1. A method of implanting a coronary sinus pacing lead in a blood vessel of the heart of a patient, comprising the steps of:

a) passing a distal end portion of a guide wire from the coronary sinus, through at least one other blood vessel, and back into the coronary sinus;

b) snaring the distal end portion of the guide wire located within the coronary sinus using a surgical tool extended into the coronary sinus;

c) externalizing the distal end portion of the guide wire outside of the patient by withdrawing the surgical tool from the coronary sinus;

d) passing a coronary angioplasty balloon catheter having a balloon associated therewith over a length of the guide wire such that the balloon is externalized outside of the patient;

e) coupling the balloon to a coronary sinus pacing lead;

f) inflating the balloon to temporarily engage a distal end portion of the lead to the catheter;

g) pulling the distal end portion of the lead though the coronary sinus and into at least one other blood vessel by at least partially withdrawing the catheter from the coronary sinus; and

h) disengaging the catheter from the lead.

2. A method according to claim 1, wherein the coronary sinus pacing lead defines an open cavity in a distal end portion thereof.

3. A method according to claim 2, wherein the open cavity is configured to receive the balloon of the catheter.

4. A method according to claim 3, wherein the open cavity is defined by a distally facing opening for receiving the balloon, and a closed proximal end.

5. A method according to claim 3, wherein coupling the lead and the catheter to one another includes inserting the balloon into the open cavity of the lead in a deflated state and inflating the balloon inside the cavity.

6. A method according to claim 5, wherein disengaging the catheter from the lead includes deflating the balloon.

7. A method according to claim 1, wherein the at least one other blood vessel includes at least one collateral.

8. A method according to claim 1, wherein the at least one other blood vessel includes at least one coronary vein.

9. A method according to claim 1, wherein the surgical tool is a goose neck snare.

10. A method according to claim 1, wherein at least partially withdrawing the catheter from the coronary sinus to pull the distal end portion of the lead though the coronary sinus and into at least one other blood vessel includes pulling an externalized end of the angioplasty catheter.

11. A method according to claim 1, wherein the lead has a cross-sectional diameter no larger than 4F.

12. A method according to claim 11, wherein the lead has a cross-sectional diameter no larger than 3F.

13. A coronary sinus pacing lead, comprising:

a lead body configured to connect with a pacing device to stimulate cardiac tissue, the lead body having a proximal end portion and an opposed distal end portion, the distal end portion configured to detachably couple to an angioplasty balloon of an angioplasty catheter.

14. A coronary sinus pacing lead according to claim 13, wherein the lead body has a cross-sectional diameter of about 2-3F, the distal end portion defines an open-ended cavity configured to receive an angioplasty balloon, and the lead is configured to connect with a pacing device to stimulate cardiac tissue.

15. A coronary sinus pacing lead according to claim 14, further comprising:

a) electrode means operatively associated with the distal end portion of the lead body for stimulating the cardiac tissue; and

b) connector means operatively associated with the proximal portion of the lead body configured to connect with the pacing device.

16. A coronary sinus pacing lead according to claim 14, wherein the open-ended cavity is defined by a distally facing opening for receiving the balloon.

17. A coronary sinus pacing lead according to claim 16, wherein the open cavity is configured to couple the distal end portion of the lead body to the balloon via an interference fit.

18. A coronary sinus pacing lead according to claim 13, wherein the lead body extends between the opposed proximal and distal end portions without a central lumen, the distal end portion defines an open-ended cavity configured to receive an angioplasty balloon, and the lead is configured to connect with a pacing device to stimulate cardiac tissue.

19. A coronary sinus pacing lead according to claim 18, further comprising:

a) electrode means operatively associated with the distal end portion of the lead body for stimulating the cardiac tissue; and

b) connector means operatively associated with the proximal portion of the lead body configured to connect with the pacing device.

20. A coronary sinus pacing lead according to claim 18, wherein the open-ended cavity is configured to receive the angioplasty balloon in a deflated state, and to couple to the balloon by an interference fit when the balloon is in an inflated state.