Lead assembly including a polymer interconnect and methods related thereto

• US 8,738,152 B2
• Filed: 12/21/2012
• Issued: 05/27/2014
• Est. Priority Date: 08/31/2006
• Status: Active Grant

• Current Assignee: Cardiac Pacemakers Incorporated (Boston Scientific Corporation)
• Original Assignee: Cardiac Pacemakers Incorporated (Boston Scientific Corporation)
• Inventors: Zarembo, Paul E., Roman, Elliott Rodriguez
• Primary Examiner(s): Lavert, Nicole F
• Application Number:
  US13/724,788
• Publication Number:
  US 20130116766A1
• Time in Patent Office: 522 Days
• Field of Search: 600/373, 607/116, 607/119, 607/122
• US Class Current: 607/116
• CPC Class Codes: A61B 5/24 Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
• CPC Class Codes: A61N 1/04 Electrodes electrosurgical electrodes A61B18/14
• CPC Class Codes: A61N 1/056 Transvascular endocardial electrode systems
• CPC Class Codes: A61N 1/0565 Electrode heads
• CPC Class Codes: A61N 1/0587 Epicardial electrode systems; Endocardial electrodes piercing the pericardium
• CPC Class Codes: H01R 13/5224 for medical use
• CPC Class Codes: Y10T 29/49172 by molding of insulating material

Abstract

A lead assembly includes a ring component having mechanical coupling features, and at least one polymer component mechanically coupled with the mechanical coupling features of the ring component. Elongate tubing is disposed over the polymer component and is secured with the polymer component.

Claims

1. A lead assembly comprising:

a lead body extending from a proximal end portion to a distal end portion, the distal end portion comprising an interconnect including a polymer component mechanically coupled to a ring component having an outer surface, wherein a portion of an inner surface of the polymer component is disposed over and in contact with the outer surface of the ring component at an interface and at least a portion of the outer surface of the ring component at the interface includes a mechanical coupling feature adapted to inhibit the rotation of the polymer component about the ring component;

at least one conductor extending within the lead body from the proximal end portion in a direction toward the distal end portion; and

at least one electrode operatively coupled to the at least one conductor.

2. The lead assembly according to claim 1, wherein the outer surface of the ring component is a non-smooth, textured outer surface.

3. The lead assembly according to claim 1, wherein the outer surface is a knurled surface at the interface.

4. The lead assembly according to claim 1, wherein the outer surface is a surface having cross-threads at the interface.

5. The lead assembly according to claim 1, wherein the outer surface is a surface having a plurality of grooves at the interface.

6. The lead assembly according to claim 1, wherein the outer surface of the ring component includes a roughened surface.

7. The lead assembly according to claim 1, wherein the ring component includes a recess adapted to receive the polymer component.

8. The lead assembly according to claim 7, wherein the outer surface of the ring component within the recess includes a plurality of apertures.

9. The lead assembly according to claim 7, wherein the outer surface of the ring component within the recess includes a plurality of slots.

10. The lead assembly according to claim 1, wherein the polymer component comprises an elastomeric thermoplastic polymer.

11. The lead assembly according to claim 10, wherein the elastomeric thermoplastic is a polyurethane.

12. The lead assembly according to claim 1, wherein the outer surface of the ring component includes textured portions adapted such that the polymer component is disposed at least partially into the textured portions.

13. The lead assembly according to claim 1, wherein the outer surface of the ring component includes an aperture adapted such that the polymer component is disposed at least partially through the holes.