System for coupling an implanatable medical device to an epicardial site

• US 20040102830A1
• Filed: 11/22/2002
• Published: 05/27/2004
• Est. Priority Date: 11/22/2002
• Status: Abandoned Application

• Current Assignee: Medtronic Incorporated (Medtronic Plc)
• Original Assignee: Medtronic Incorporated (Medtronic Plc)
• Inventors: Williams, Terrell M.
• Application Number:
  US10/302,290
• Publication Number:
  US 20040102830A1
• Time in Patent Office: Days
• US Class Current: 607/125
• CPC Class Codes: A61N 1/0573 chacterised by means penetrating the heart tissue, e.g. helix needle or hook
• CPC Class Codes: A61N 1/0587 Epicardial electrode systems; Endocardial electrodes piercing the pericardium
• CPC Class Codes: A61N 2001/0585 Coronary sinus electrodes

Abstract

A device for delivering an implantable medical device to a target site in a heart along a predetermined pathway that includes a generally straight first portion extending from a proximal end to a distal end and a curved second portion extending from the distal end of the first portion to a distal end of the device. The curved second portion includes a first curve portion formed in a first plane and a second curved portion formed in a second plane substantially orthogonal to the first plane to direct the implantable medical device toward an epicardial surface of the heart directly adjacent to the predetermined pathway

Claims

1. A device for delivering an implantable medical device to a target site in a heart along a predetermined pathway, comprising:

a generally straight first portion extending from a proximal end to a distal end;

a curved second portion extending from the distal end of the first portion to a distal end of the device, the curved second portion including a first curve portion formed in a first plane and a second curved portion formed in a second plane substantially orthogonal to the first plane to direct the implantable medical device toward an epicardial surface of the heart directly adjacent to the predetermined pathway.

2. The device of claim 1, wherein the predetermined pathway is the coronary sinus of the heart.

3. The device of claim 1, wherein the curved second portion includes a first section, a second section and a third section extending between the first section and the second section, and wherein the first section is positioned at a first angle from the third section in the first plane and the second section is positioned at a second angle from the generally straight first portion in the second plane, the first angle being approximately equal to 90 degrees and the second angle being approximately equal to 30 degrees.

4. The device of claim 1, wherein the curved second portion has a radius of curvature between approximately 1.5 inches and 2.0 inches.

5. The device of claim 3, wherein an axial length of the generally straight first portion is between approximately 10 inches and 15 inches, an axial length of the first section is between approximately 3 inches and 5 inches, an axial length of the third section is between approximately 1 inch and 2 inches, and an axial length of the second section is between approximately 0.15 inches and 0.2 inches.

6. The device of claim 5, wherein the second section includes a second section curve and an axial length of the second section curve is between approximately 0.4 inches and 0.5 inches.

7. The device of claim 5, wherein the second section includes a second section curve having a radius of curvature between approximately 0.35 inches and 0.45 inches, and wherein an outer diameter of the generally straight first portion is between approximately 0.06 inches and 0.07 inches.

8. The device of claim 5, wherein the second section includes a second section curve having a radius of curvature between approximately 0.45 inches and 0.60 inches, and wherein an outer diameter of the generally straight first portion is between approximately 0.05 inches and 0.06 inches.

9. The device of claim 1, wherein a central axis of the third section is at an angle of approximately 90 degrees from a central axis of the generally straight first portion, and a central axis of second section is at an angle of approximately 30 degrees from the central axis of the generally straight first portion.

10. A device for delivering an implantable medical device to a target site in a heart along a predetermined pathway through the coronary sinus, comprising:

a generally straight first portion extending from a proximal end to a distal end;

a curved second portion extending from the distal end of the first portion to a distal end of the device, the curved second portion including a first curve portion formed in a first plane and a second curved portion formed in a second plane substantially orthogonal to the first plane to direct the implantable medical device toward an epicardial surface of the heart directly adjacent to the predetermined pathway, wherein the curved second portion includes a first section, a second section and a third section extending between the first section and the second section, and wherein the first section is positioned at a first angle from the third section in the first plane and the second section is positioned at a second angle from the generally straight first portion in the second plane, the first angle being approximately equal to 90 degrees and the second angle being approximately equal to 30 degrees, and wherein the curved second portion has a radius of curvature between approximately 1.5 inches and 2.0 inches.

11. The device of claim 10, wherein an axial length of the generally straight first portion is between approximately 10 inches and 15 inches, an axial length of the first section is between approximately 3 inches and 5 inches, an axial length of the third section is between approximately 1 inch and 2 inches, and an axial length of the second section is between approximately 0.15 inches and 0.2 inches.

12. The device of claim 10, wherein the second section includes a second section curve and an axial length of the second section curve is between approximately 0.4 inches and 0.5 inches.

13. The device of claim 10, wherein the second section includes a second section curve having a radius of curvature between approximately 0.35 inches and 0.45 inches, and wherein an outer diameter of the generally straight first portion is between approximately 0.06 inches and 0.07 inches.

14. The device of claim 10, wherein the second section includes a second section curve having a radius of curvature between approximately 0.45 inches and 0.60 inches, and wherein an outer diameter of the generally straight first portion is between approximately 0.05 inches and 0.06 inches.

15. A system for delivering an implantable medical device to a target site in a heart along a predetermined pathway through the coronary sinus, comprising:

a delivery catheter having a generally straight first portion extending from a first proximal end to a first distal end and a curved second portion extending from the first distal end to a distal end of the delivery catheter; and

a therapy delivery device, slideably receivable within the delivery catheter, extending from a second proximal end to a second distal end, wherein the curved second portion includes a first curve portion formed in a first plane and a second curved portion formed in a second plane substantially orthogonal to the first plane to direct the therapy delivery device outward from the distal end of the delivery catheter toward an epicardial surface of the heart directly adjacent to the coronary sinus.

16. The system of claim 15, wherein the curved second portion includes a first section, a second section and a third section extending between the first section and the second section, and wherein the first section is positioned at a first angle from the third section in the first plane and the second section is positioned at a second angle from the generally straight first portion in the second plane, the first angle being approximately equal to 90 degrees and the second angle being approximately equal to 30 degrees.

17. The system of claim 15, wherein the curved second portion has a radius of curvature between approximately 1.5 inches and 2.0 inches.

18. The system of claim 16, wherein an axial length of the generally straight first portion is between approximately 10 inches and 15 inches, an axial length of the first section is between approximately 3 inches and 5 inches, an axial length of the third section is between approximately 1 inch and 2 inches, and an axial length of the second section is between approximately 0.15 inches and 0.2 inches.

19. The system of claim 18, wherein the second section includes a second section curve and an axial length of the second section curve is between approximately 0.4 inches and 0.5 inches.

20. The system of claim 18, wherein the second section includes a second section curve having a radius of curvature between approximately 0.35 inches and 0.45 inches, and wherein an outer diameter of the generally straight first portion is between approximately 0.06 inches and 0.07 inches.

21. The system of claim 18, wherein the second section includes a second section curve having a radius of curvature between approximately 0.45 inches and 0.60 inches, and wherein an outer diameter of the generally straight first portion is between approximately 0.05 inches and 0.06 inches.

22. The system of claim 15, wherein a central axis of the third section is at an angle of approximately 90 degrees from a central axis of the generally straight first portion, and a central axis of second section is at an angle of approximately 30 degrees from the central axis of the generally straight first portion.

23. The system of claim 15, further comprising a fixation element coupled to the distal end of the therapy delivery device fixedly engaging the therapy delivery device to the epicardial surface, the fixation element having a tip portion approximately flat along a direction of a central axis of the fixation element and facing inward toward the central axis.