LEADS WITH TIP ELECTRODE FOR ELECTRICAL STIMULATION SYSTEMS AND METHODS OF MAKING AND USING

• US 20140296953A1
• Filed: 06/13/2014
• Published: 10/02/2014
• Est. Priority Date: 06/01/2012
• Status: Active Grant

• Current Assignee: Boston Scientific Corporation
• Original Assignee: Boston Scientific Corporation
• Inventors: Pianca, Anne Margaret, Howard, Joshua Dale, Orinski, William George
• Granted Patent: US 8,996,132 B2
• Time in Patent Office: Days
• US Class Current: 607/116
• CPC Class Codes: A61N 1/05 for implantation or insertion into the body, e.g. heart electrode A61N1/06 takes precedence
• CPC Class Codes: A61N 1/0529 Electrodes for brain stimulation
• CPC Class Codes: A61N 1/0534 Electrodes for deep brain stimulation
• CPC Class Codes: A61N 1/056 Transvascular endocardial electrode systems
• CPC Class Codes: A61N 1/0565 Electrode heads
• CPC Class Codes: A61N 1/3605 Implantable neurostimulators for stimulating central or peripheral nerve system

Abstract

An implantable electrical stimulation lead includes a tip electrode disposed on a distal tip of the lead body. One tip electrode has a base and a separate plug attached to the base. The base defines an interior lumen closed at one end by the plug. Another tip electrode has an electrode body, a stem extending from the electrode body, and shaped retention features extending from the stem. Yet another tip electrode has an electrode body, a stem extending from the electrode body, and a flange disposed on the stem opposite the electrode body. A further tip electrode has an electrode body defining an interior lumen and a plurality of protrusions extending into the interior lumen. Another tip electrode has an electrode body and arms extending from the electrode body. The electrode body defines an interior lumen and the arms extend over an opening to the interior lumen.

Claims

1. An implantable electrical stimulation lead, comprising:

a lead body comprising a distal portion, a distal tip, and a proximal portion; and

a plurality of electrodes disposed along the distal portion of the lead body, the plurality of electrodes comprising a tip electrode disposed on the distal tip of the lead body, the tip electrode having a conductive base and a separate conductive plug attached to the base, wherein the base defines an interior lumen with a portion of the plug inserted into the interior lumen of the base.

2. The implantable electrical stimulation lead of claim 1, wherein a portion of the lead body extends into the interior lumen of the base.

3. The implantable electrical stimulation lead of claim 1, wherein the plurality of electrodes farther comprises a plurality of segmented electrodes.

4. The implantable electrical stimulation lead of claim 3, wherein the plurality of electrodes further comprises at least one ring electrode.

5. The implantable electrical stimulation lead of claim 1, wherein the plug has a sloped edge and the interior lumen of the base has a corresponding sloped edge.

6. An implantable electrical stimulation lead, comprising:

a lead body comprising a distal portion, a distal tip, and a proximal portion; and

a plurality of electrodes disposed along the distal portion of the lead body, the plurality of electrodes comprising a tip electrode disposed on the distal tip of the lead body, the tip electrode having an electrode body, a stem extending from the electrode body with an outer diameter smaller than an outer diameter of a portion of the electrode body from which the stem extends, and a flange attached to the stem opposite the electrode body and having an outer diameter larger than the outer diameter of the stem, wherein a portion of the lead body extends around the stem and flange, wherein the flange facilitates retention of the tip electrode on the lead body.

7. The Implantable electrical stimulation lead of claim 6, wherein the flange has a non-circular lateral cross-section and resists rotation of the tip electrode around the distal tip of the lead body.

8. The implantable electrical stimulation lead of claim 6, wherein the flange comprises a plurality of indentations.

9. The implantable electrical stimulation lead of claim 8, further comprising a tip electrode conductor coupled to the flange of the tip electrode at one of the plurality of indentations.

10. The implantable electrical stimulation lead of claim 6, wherein the stem and flange are conductive.

12. The implantable electrical stimulation lead of claim 6, wherein the plurality of electrodes further comprises a plurality of segmented electrodes.

11. The implantable electrical stimulation lead of chum 6, wherein the flange is gear-shaped.

13. An implantable electrical stimulation lead, comprising:

a lead body comprising a distal portion, a distal tip, and a proximal portion; and

a plurality of electrodes disposed along the distal portion of the lead body, the plurality of electrodes comprising a tip electrode disposed on the distal tip of the lead body, the tip electrode having an electrode body, wherein the electrode body defines an ulterior lumen and a plurality of retention features extending into the interior lumen, wherein a portion of the lead body extends into the interior lumen of the electrode body and the plurality of retention features in the interior lumen facilitates retention of the tip electrode on the lead body and hinders rotation of the tip electrode around the distal tip of the lead body.

14. The implantable electrical stimulation lead of claim 13, wherein the electrode body further defines an opening to the interior lumen with one or more of the retention features formed around the opening to give the opening a non-circular shape.

15. The implantable electrical stimulation lead of claim 14, wherein the electrode body further defines an opening to the interior lumen and providing a flange-dike arrangement with respect to an adjacent surface of the interior lumen.

16. The implantable electrical stimulation lead of claim 13, wherein two or more of the retention features are arranged in a ring around a circumference of the interior lumen of the electrode body.

17. The implantable electrical stimulation lead of claim 13, wherein a plurality of the plurality of retention features are arranged in a plurality of concentric rings around a circumference of the interior lumen of the electrode body.

18. The implantable electrical stimulation lead of claim 13, wherein the electrode body further comprises a base and a separate plug attached to the base.

19. The implantable electrical stimulation lead of claim 13, wherein the plurality of electrodes further comprises a plurality of segmented electrodes.

20. The implantable electrical stimulation lead of claim 19, wherein the plurality of electrodes further comprises at least one ring electrode.