COMPOSITE WIRE FOR IMPLANTABLE CARDIAC LEAD CONDUCTOR CABLE AND COILS

• US 20100044076A1
• Filed: 10/29/2009
• Published: 02/25/2010
• Est. Priority Date: 11/10/2005
• Status: Abandoned Application

• Current Assignee: Russell L. Hoeker, Stuart R. Chastain
• Original Assignee: Russell L. Hoeker, Stuart R. Chastain
• Inventors: Hoeker, Russell L., Chastain, Stuart R.
• Application Number:
  US12/608,239
• Publication Number:
  US 20100044076A1
• Time in Patent Office: Days
• US Class Current: 174/126.200
• CPC Class Codes: A61L 31/088 Other specific inorganic materials not covered by A61L31/084 or A61L31/086
• CPC Class Codes: A61L 31/124 of other specific inorganic materials not covered by A61L31/122 or A61L31/123
• 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 1/056 Transvascular endocardial electrode systems
• CPC Class Codes: Y10T 428/12438 Composite

Abstract

A composite wire can include a core including a material chosen from the group consisting of Ag and Ir and combinations thereof, a shell around the core including a material chosen from the group consisting of Ta, MP35N, and Nb and combinations thereof, and an outer layer over the shell including a material chosen from the group consisting of Pt and Pt—Ir and combinations thereof.

Claims

1. An implantable lead comprising:

an implantable lead body extending from a distal end to a proximal end;

a conductor disposed within the lead body, the conductor including a composite wire including;

a core including a material chosen from the group consisting of Ag and Ir and combinations thereof;

a shell around the core including a material chosen from the group consisting of Ta and Nb and combinations thereof; and

an outer layer over the shell including a material chosen from the group consisting of Pt and Pt—

Ir and combinations thereof.

2. The implantable lead of claim 1, wherein the core includes an embedded strand construction.

3. The implantable lead of claim 1, wherein the wire includes a diameter of about 0.0008 inches to about 0.010 inches.

4. The implantable lead of claim 1, wherein a cross-sectional area of the core is about 5% to about 50% of a cross-sectional area of the composite wire.

5. The implantable lead of claim 1, wherein a cross-sectional area of the outer layer is about 2% to about 20% of a cross-sectional area of the composite wire.

6. The implantable lead of claim 1, wherein the composite wire is cold-drawn.

7. The implantable lead of claim 1, wherein the composite wire is heat treated.

8. An implantable lead comprising:

an implantable lead body extending from a distal end to a proximal end;

a conductor disposed within the lead body, the conductor including a composite wire comprising;

a core including a material chosen from the group consisting of Ag and Au and combinations thereof;

a shell around the core including a material chosen from the group consisting of Ta and Nb and combinations thereof; and

an outer layer over the shell including a material chosen from the group consisting of Pt, Pt—

Ir, MP35N, and stainless steel and combinations thereof.

9. The implantable lead of claim 8, wherein the core includes an embedded strand construction.

10. The implantable lead of claim 8, wherein the wire includes a diameter of about 0.0008 inches to about 0.010 inches.

11. An implantable lead comprising:

an implantable lead body extending from a distal end to a proximal end;

a conductor disposed within the lead body, the conductor including a composite wire comprising;

a core including a material chosen from the group consisting of Ag, Au, Rh, Mo, alloy of Ta and Mo, Cu, Ir, Ta, and Ti and combinations thereof;

a shell around the core including a material chosen from the group consisting of stainless steel, Ta, and MP35N and combinations thereof; and

an outer layer over the shell including a material chosen from the group consisting of Ag, Ta, Ti, stainless steel, MP35N, and Nb and combinations thereof.

12. The implantable lead of claim 11, wherein the core includes a material chosen from the group consisting of Ag, Au, Rh, Mo, Cu, and Ir, and combinations thereof.

13. The implantable lead of claim 11, wherein a cross-sectional area of the core is about 5% to about 50% of a cross-sectional area of the composite wire.

14. An implantable lead comprising:

an implantable lead body extending from a distal end to a proximal end;

a conductor disposed within the lead body, the conductor including a composite wire comprising;

a core including a material chosen from the group consisting of Ag, Au, Rh, Mo, alloy of Ta and Mo, Cu, Ir, Ta, and Ti and combinations thereof;

a shell around the core including a material chosen from the group consisting of Ta, and MP35N and combinations thereof; and

an outer layer over the shell including a material chosen from the group consisting of Ag, Ta, Rh, stainless steel, MP35N, and Nb and combinations thereof.

15. The implantable lead of claim 14, wherein the core includes a material chosen from the group consisting of Ag, Au, Rh, Mo, Cu, and Ir, and combinations thereof.

16. The implantable lead of claim 14, wherein a cross-sectional area of the core is about 5% to about 50% of a cross-sectional area of the composite wire.

17. The implantable lead of claim 14, wherein the core consists of Mo, the shell consists of Ta, and the outer layer consists of MP35N.

18. An implantable lead comprising:

an implantable lead body extending from a distal end to a proximal end;

a conductor disposed within the lead body, the conductor including a bi-material composite wire comprising;

an inner core including a material chosen from the group consisting of Ta, Ag, Rh, Au, Ti, Cu, or Ir and combinations thereof; and

an outer shell around the core including a material chosen from the group consisting of Nb, Pt, and Pt—

Ir, and combinations thereof.

19. The implantable lead of claim 18, wherein the core consists of Ag, and the shell consists of Pt.

20. The implantable lead of claim 18, wherein the core consists of Ag or Au, and the shell consists of Pt or Pt—

Ir.