Hermetic lead connector assembly

• US 7,711,428 B2
• Filed: 04/10/2007
• Issued: 05/04/2010
• Est. Priority Date: 01/18/2007
• Status: Active Grant

• Current Assignee: Medtronic Incorporated (Medtronic Plc)
• Original Assignee: Medtronic Incorporated (Medtronic Plc)
• Inventors: Janzig, Darren A., Paidosh, Chris J., Lindner, Gerald G.
• Primary Examiner(s): Layno; Carl H
• Assistant Examiner(s): CHU, MICHAEL ALEXANDER
• Application Number:
  US11/733,247
• Publication Number:
  US 20080177167A1
• Time in Patent Office: 1,120 Days
• Field of Search: 607/36, 607/37, 607/38, 439/668, 439/733.1, 439/909
• US Class Current: 607/37
• CPC Class Codes: A61N 1/3752 Details of casing-lead connections
• CPC Class Codes: Y10S 439/909 Medical use or attached to human body

Abstract

A hermetic lead connector assembly includes a hermetic lead connector having an open end, a lead connector outer surface and a lead connector inner surface defining a lead aperture and a rigid sleeve is disposed about the hermetic lead connector outer surface. The hermetic lead connector has one or more electrically conducting contact rings spaced apart by electrically insulating rings. The hermetic lead connector provides a hermetic seal between the lead connector outer surface and the lead connector inner surface. The rigid sleeve has an aperture that exposes a portion of the one or more electrically conducting contact rings.

Claims

1. A hermetic lead connector assembly comprising;

a hermetic lead connector having an open end, a lead connector outer surface and a lead connector inner surface defining a lead aperture, the hermetic lead connector comprising one or more electrically conducting contact rings spaced apart by electrically insulating rings and braze disposed between the one or more electrically conducting contact rings and the electrically insulating rings, and the hermetic lead connector providing a hermetic seal between the lead connector outer surface and the lead connector inner surface; and

a rigid sleeve disposed about the lead connector outer surface, the rigid sleeve having an aperture that exposes a portion of the one or more electrically conducting contact rings.

2. A hermetic lead connector assembly according to claim 1, wherein the rigid sleeve provides axial compression and cantilever strength to the hermetic lead connector.

3. A hermetic lead connector assembly according to claim 1, wherein the aperture exposes a portion of each electrically conducting contact rings.

4. A hermetic lead connector assembly according to claim 1, wherein the hermetic lead connector further comprises a mounting flange disposed adjacent to the open end and the rigid sleeve is fixed to the mounting flange.

5. A hermetic lead connector assembly according to claim 1, further comprising a filtering capacitor disposed adjacent to or within the aperture and in electrical connection with the one or more electrically conducting contact rings and the rigid sleeve.

6. A hermetic lead connector assembly according to claim 1, wherein the lead connector comprises a plurality of ring subassemblies fixed in axial alignment.

7. A hermetic lead connector assembly according to claim 6, wherein each ring subassembly comprises one of the electrically insulating rings fixed between one of the electrically conducting contact rings and an electrically conducting spacer ring.

8. A hermetic lead connector assembly according to claim 6, wherein each ring subassembly comprises one of the electrically insulating rings brazed between one of the electrically conducting contact rings and an electrically conducting spacer ring and a fluid seal material disposed on brazed joints within the ring subassembly.

9. A hermetic lead connector assembly according to claim 6, wherein the lead connector comprises a plurality of ring subassemblies welded in axial alignment and a first ring subassembly electrically conducting contact ring is welded to an adjacent second ring subassembly electrically conducting spacer ring.

10. A hermetic lead connector assembly comprising;

a hermetic lead connector having an open end, a lead connector outer surface and a lead connector inner surface defining a lead aperture, the hermetic lead connector comprising a plurality of ring subassemblies fixed in axial alignment, and each ring subassembly comprises an electrically insulating ring fixed between an electrically conducting contact ring and an electrically conducting spacer ring and braze disposed between the electrically insulating ring and the electrically conducting contact ring and the electrically insulating ring and the electrically conducting spacer ring, and the hermetic lead connector providing a hermetic seal between the lead connector outer surface and the lead connector inner surface; and

a rigid sleeve disposed about the hermetic lead connector outer surface, the rigid sleeve having an aperture that exposes a portion of the one or more electrically conducting contact rings.

11. A hermetic lead connector assembly according to claim 10, wherein each ring subassembly comprises the insulating ring brazed between the electrically conducting contact ring and the electrically conducting spacer ring and a fluid seal material disposed on brazed joints within the ring subassembly.

12. A hermetic lead connector assembly according to claim 10, wherein the lead connector comprises a plurality of ring subassemblies welded in axial alignment and a first ring subassembly electrically conducting contact ring is welded to an adjacent second ring subassembly electrically conducting spacer ring.

13. A hermetic lead connector assembly according to claim 10, wherein the rigid sleeve provides axial compression and cantilever strength to the hermetic lead connector.

14. A hermetic lead connector assembly according to claim 10, wherein the hermetic lead connector further comprises a mounting flange disposed adjacent to the open end and the rigid sleeve is fixed to the mounting flange.

15. A hermetic lead connector assembly according to claim 10, further comprising a filtering capacitor disposed adjacent to or within the aperture and in electrical connection with the one or more electrically conducting contact rings and the rigid sleeve.

16. An implantable active medical device comprising;

a hermetically sealed housing defining a sealed housing interior;

a power source and electronics in electrical communication and disposed within the

sealed housing interior;

a hermetic lead connector projecting into the sealed housing interior and having an open end, a lead connector outer surface and a lead connector inner surface defining a lead aperture, the hermetic lead connector comprising one or more electrically conducting contact rings spaced apart by electrically insulating rings braze disposed between the one or more electrically conducting contact rings and the electrically insulating rings, and the hermetic lead connector providing a hermetic seal between the lead connector outer surface and the lead connector inner surface; and

a rigid sleeve disposed about the lead connector outer surface, the rigid sleeve having an aperture that exposes a portion of the one or more electrically conducting contact rings.

17. An implantable active medical device according to claim 16, wherein the hermetic lead connector comprises a mounting flange adjacent to the open end and the mounting flange is fixed to the hermetically sealed housing and the rigid sleeve.

18. An implantable active medical device according to claim 16, wherein the rigid sleeve provides axial compression to the hermetic lead connector.

19. An implantable active medical device according to claim 16, further comprising a filtering capacitor disposed adjacent to or within the aperture and in electrical connection with the one or more electrically conducting contact rings and the rigid sleeve.

20. An implantable active medical device according to claim 16, wherein the lead connector comprises a plurality of ring subassemblies fixed in axial alignment.

21. An implantable active medical device according to claim 20, wherein each ring subassembly comprises one of the electrically insulating rings fixed between one of the electrically conducting contact rings and an electrically conducting spacer ring.

22. An implantable active medical device according to claim 20, wherein each ring subassembly comprises one of the electrically insulating rings brazed between one of the electrically conducting contact rings and an electrically conducting spacer ring and a fluid seal material disposed on brazed joints within the ring subassembly.

23. An implantable active medical device according to claim 20, wherein the lead connector comprises a plurality of ring subassemblies welded in axial alignment and a first ring subassembly electrically conducting contact ring is welded to an adjacent second ring subassembly electrically conducting spacer ring.