IMPLANTABLE MEDICAL LEAD HAVING AN ANCHOR PROVIDING ENHANCED FIXATION

• US 20100211149A1
• Filed: 02/13/2009
• Published: 08/19/2010
• Est. Priority Date: 02/13/2009
• Status: Active Grant

• Current Assignee: Pacesetter Incorporated (Abbott Laboratories Incorporated)
• Original Assignee: Pacesetter Incorporated (Abbott Laboratories Incorporated)
• Inventors: Morgan, Kevin L., Doan, Phong D., Flannery, Conor
• Granted Patent: US 8,170,690 B2
• Time in Patent Office: Days
• US Class Current: 607/127
• CPC Class Codes: A61N 1/0573 chacterised by means penetrating the heart tissue, e.g. helix needle or hook

Abstract

An implantable medical lead is disclosed herein wherein the lead employs a helical distal tip anchor having improved fixation capabilities. The implantable medical lead may include a body and a helical anchor. The body may include a distal end and a proximal end. The helical anchor may be at least one of extending and extendable from the distal end. The helical anchor may include at least one loop including first and second straight sides that intersect at a first corner.

Claims

1. An implantable medical lead comprising:

a body including a distal end and a proximal end; and

a helical anchor that is at least one of extending and extendable from the distal end,

wherein the generally helical anchor comprises at least one loop including first and second straight sides that intersect at a first corner.

2. The implantable medical lead of claim 1, wherein the loop further includes third and fourth sides, the second and third sides intersecting at a second corner, the third and fourth sides intersecting at a third corner, and the fourth and first sides intersecting at a fourth corner.

3. The implantable medical lead of claim 2, wherein the sides and corners of the loop cause the loop to be square-shaped.

4. The implantable medical lead of claim 1, wherein the loop further includes third, fourth and fifth sides, the second and third sides intersecting at a second corner, the third and fourth sides intersecting at a third corner, the fourth and fifth sides intersecting at a fourth corner, and the fifth and first sides intersecting at a fifth corner.

5. The implantable medical lead of claim 4, wherein the sides and corners of the loop cause the loop to be shaped as a regular pentagon.

6. The implantable medical lead of claim 1, wherein the loop further includes third, fourth, fifth and sixth sides, the second and third sides intersecting at a second corner, the third and fourth sides intersecting at a third corner, the fourth and fifth sides intersecting at a fourth corner, the fifth and first sides intersecting at a fifth corner, and the sixth and first sides intersecting at a sixth corner.

7. The implantable medical lead of claim 6, wherein the sides and corners of the loop cause the loop to be shaped as a regular hexagon.

8. The implantable medical lead of claim 1, wherein the loop further includes a third side, the second and third sides intersecting at a second corner, and the third and first sides intersecting at a third corner.

9. The implantable medical lead of claim 8, wherein the sides and corners of the loop cause the loop to be shaped as an equilateral triangle.

10. The implantable medical lead of claim 1, wherein a notch is defined in a surface of the at least one loop.

11. An implantable medical lead comprising:

a body including a distal end and a proximal end; and

a generally helical fixation anchor comprising at least one loop radially extending about, and generally transverse to, a longitudinal axis of the body, the at least one loop comprising multiple straight segments.

12. The implantable medical lead of claim 11, wherein the at least one loop further comprises multiple corners, each corner being formed by an intersection a pair of multiple straight segments.

13. The implantable medical lead of claim 12, wherein the multiple straight segments is at least one of three, four, five and six straight segments, and the multiple corners is at least one of three, four, five and six straight segments.

14. The implantable medical lead of claim 11, wherein the multiple straight segments is at least one of three, four, five and six straight segments.

15. The implantable medical lead of claim 11, wherein a notch is defined in a surface of the at least one loop.

16. An implantable medical lead comprising:

a body including a distal end and a proximal end; and

a helical anchor that is at least one of extending and extendable from the distal end and comprising at least one loop radially extending about, and generally transverse to, a longitudinal axis of the body, the at least one loop comprising multiple corners.

17. The implantable medical lead of claim 16, wherein the at least one loop further comprises multiple straight segments separating the multiple corners from each other.

18. The implantable medical lead of claim 17, wherein the multiple straight segments is at least one of three, four, five and six straight segments, and the multiple corners is at least one of three, four, five and six straight segments.

19. The implantable medical lead of claim 16, wherein the multiple corners is at least one of three, four, five and six corners.

20. The implantable medical lead of claim 16, wherein the multiple corners are generally oriented to point radially outward relative to the longitudinal axis.

21. The implantable medical lead of claim 16, wherein a notch is defined in a surface of the at least one loop.

22. An implantable medical lead comprising:

a body including a distal end and a proximal end; and

a helical anchor that is at least one of extending and extendable from the distal end and comprising at least one loop radially extending about, and generally transverse to, a longitudinal axis of the body, the at least one loop forming a geometrical shape having multiple straight sides and multiple corners.

23. The implantable medical lead of claim 22, wherein the geometrical shape is at least one of a triangle, a square, a pentagon and a hexagon.

24. The implantable medical lead of claim 22, wherein a notch is defined in a surface of the at least one loop.