LEAD ASSEMBLY AND RELATED METHODS

• US 20140109404A1
• Filed: 12/30/2013
• Published: 04/24/2014
• Est. Priority Date: 05/07/2008
• Status: Active Grant

• Current Assignee: Cardiac Pacemakers Incorporated (Boston Scientific Corporation)
• Original Assignee: Cardiac Pacemakers Incorporated (Boston Scientific Corporation)
• Inventors: Arnholt, Devon N.
• Granted Patent: US 9,095,702 B2
• Time in Patent Office: Days
• US Class Current: 29/885
• CPC Class Codes: A61L 31/10 Macromolecular materials
• CPC Class Codes: A61N 1/0563 specially adapted for defibrillation or cardioversion
• CPC Class Codes: A61N 1/0568 with drug delivery
• CPC Class Codes: A61N 2001/0578 having means for removal or extraction
• CPC Class Codes: H01R 2201/12 for medicine and surgery
• CPC Class Codes: Y10T 29/49117 Conductor or circuit manufacturing
• CPC Class Codes: Y10T 29/49224 with coating

Abstract

Defibrillator lead designs and methods for manufacturing a lead having attachment between a fibrosis-limiting material covering, a shocking coil electrode, and an implantable lead body are disclosed herein. An electrode coil fitting is disposed within the shocking coil electrode. In an option, the fibrosis limiting material extends past the ends of the electrode coil, and is wrapped between the coil electrode and the electrode coil member.

Claims

1. A method comprising:

forming a lead assembly including coating an external portion of at least one electrode coil with a coating of fibrosis limiting material, where the coating of fibrosis limiting material extends past end portions of the electrode coil;

disposing the electrode coil over an electrode coil fitting and anchoring the fibrosis limiting material between the electrode coil and the electrode coil fitting;

coupling the at least one electrode coil with at least one conductor; and

disposing insulative lead body over at least a portion of the at least one conductor and adjacent to the electrode coil and coating.

2. The method as recited in claim 1, wherein anchoring the fibrosis limiting material includes disposing coating end portions of the coating of fibrosis limiting material within the electrode coil.

3. The method as recited in claim 1, further comprising forming at least one through hole through the coil electrode fitting.

4. The method as recited in claim 3, further comprising contacting tubing external to the electrode coil fitting with internal tubing through the at least one through hole.

5. The method as recited in claim 1, further comprising forming one or more tethers along one or more end portions of the fibrosis limiting coating, and disposing the one or more tethers between an exterior surface of the at least one coil electrode fitting and an interior portion of the at least one electrode coil.

6. The method as recited in claim 1, further comprising welding the electrode coil.

7. The method as recited in claim 6, wherein welding the at least one electrode coil includes laser welding one or more end portions of the at least one electrode coil.

8. The method as recited in claim 7, further comprising forming at least one slit in the welded portions.