Surgical lead paddle

• US 7,697,995 B2
• Filed: 04/25/2002
• Issued: 04/13/2010
• Est. Priority Date: 04/25/2002
• Status: Active Grant

• Current Assignee: Medtronic Incorporated (Medtronic Plc)
• Original Assignee: Medtronic Incorporated (Medtronic Plc)
• Inventors: Racz, Gabor, Cross, Thomas E. Jr.
• Primary Examiner(s): MANUEL, GEORGE C
• Application Number:
  US10/131,980
• Publication Number:
  US 20030204228A1
• Time in Patent Office: 2,910 Days
• Field of Search: 607/115, 607116-118, 600372-374, 600/424, 600/377, 600/392, 600/390, 450/61
• US Class Current: 607/117
• CPC Class Codes: A61N 1/0553 Paddle shaped electrodes, e.g. for laminotomy
• CPC Class Codes: Y10T 29/49174 Assembling terminal to elongated conductor

Abstract

The present invention provides for an improved apparatus and method for electrical stimulation. A paddle having a thickness up to 0.030 inches is implanted adjacent the spinal cord dura mater to reduce the likelihood of paralysis due to stress on the spinal cord attributed to bulkier leads. The paddle is then positioned so that at least one of a plurality of electrodes is positioned over the area of the spinal cord requiring pain treatment; and then electric stimulation is applied to the electrodes to effect pain treatment. In another embodiment the paddle is curved about a vertical axis to substantially match the shape of a human spinal cord dura mater to help reduce lead migration.

Claims

1. An implantable medical lead for electrical stimulation, comprising:

a paddle, comprising;

a first paddle element having a recessed cavity formed on one side of the first paddle element;

a second paddle element having at least one aperture, wherein the second paddle element is received by the cavity of the first paddle element; and

at least one electrode electrically connected to at least one conductor, said at least one electrode being disposed between the first paddle element and the second paddle element with a portion of the at least one electrode being conductively exposed through the at least one aperture.

2. The implantable medical lead of claim 1 wherein the paddle has a thickness for application to a human spinal cord.

3. The implantable medical lead of claim 2 wherein the paddle is configured to be applied to cervical vertebrae in the human spinal cord.

4. The implantable medical lead of claim 2 wherein said paddle is configured to be applied to lumbar vertebrae in the human spinal cord.

5. The implantable medical lead of claim 1, wherein the first and second paddle elements support the electrodes.

6. The implantable medical lead of claim 1;

wherein the first and second paddle element have a combined thickness up to 0.030 inches for application to small areas within the human body.

7. The implantable medical lead of claim 1, wherein the first and second paddle elements are curved along a vertical axis.

8. The implantable medical lead of claim 7, wherein the curved paddle elements are substantially similar to the shape of a human spinal cord.

9. The implantable medical lead of claim 1, wherein said first and second paddle elements have a combined thickness up to 0.025 inches.

10. The implantable medical lead of claim 1, wherein said first and second paddle elements have a combined thickness up to 0.020 inches.

11. The medical lead of claim 1 wherein the paddle has a thickness for application to a human spinal cord.

12. An implantable medical lead for electrical stimulation, comprising:

a paddle, comprising;

a first paddle element having a recessed cavity formed on one side of the first paddle element;

a second paddle element with an aperture, the second paddle element having substantially the same shape as the cavity of the first paddle element, wherein the second paddle element is received in the cavity of the first paddle element; and

an electrode electrically connected to a conductor, said electrode being disposed between the first paddle element and the second paddle element wherein the electrode is conductively exposed through the aperture.

13. The medical lead of claim 12, wherein the paddle is curved along a vertical axis.

14. The medical lead of claim 13, wherein the curved paddle is substantially similar to the shape of a human spinal cord.

15. The medical lead of claim 12, wherein the paddle has a thickness up to 0.025 inches.

16. The medical lead of claim 12, wherein the paddle has a thickness up to 0.020 inches.

17. The medical lead of claim 12, wherein the paddle has a thickness configured for application to a human spinal cord.

18. The medical lead of claim 12, wherein the paddle is configured for application to cervical vertebrae in a human spinal cord.

19. The medical lead of claim 12, wherein the paddle is configured for application to lumbar vertebrae in a human spinal cord.