Implantable pulse generator systems and methods for providing functional and/or therapeutic stimulation of muscles and/or nerves and/or central nervous system tissue

• US 20070067000A1
• Filed: 09/07/2006
• Published: 03/22/2007
• Est. Priority Date: 06/10/2004
• Status: Abandoned Application

• Current Assignee: Medtronic Urinary Solutions, Inc. (Medtronic Plc)
• Original Assignee: NDI Medical, LLC
• Inventors: Thrope, Geoffrey, Strother, Robert, Mrva, Joseph, Rubin, Stuart, Behan, Edgar
• Application Number:
  US11/517,169
• Publication Number:
  US 20070067000A1
• Time in Patent Office: Days
• US Class Current: 607/36
• CPC Class Codes: A61N 1/0551 Spinal or peripheral nerve electrodes
• CPC Class Codes: A61N 1/36007 of urogenital or gastrointestinal organs, e.g. for incontinence control
• CPC Class Codes: A61N 1/3605 Implantable neurostimulators for stimulating central or peripheral nerve system
• CPC Class Codes: A61N 1/36071 Pain
• CPC Class Codes: A61N 1/375 Constructional arrangements, e.g. casings
• CPC Class Codes: A61N 1/3754 Feedthroughs
• CPC Class Codes: A61N 1/3758 Packaging of the components within the casing

Abstract

Improved assemblies, systems, and methods provide a stimulation system for prosthetic or therapeutic stimulation of muscles, nerves, or central nervous system tissue, or any combination. The stimulation system includes a hermetically sealed implantable pulse generator and methods for assembly and programming.

Claims

1. A method of manufacturing a hermetically sealed implantable pulse generator comprising

providing a top case and a bottom case and a header,

coupling at least one feed-thru to the top case or the bottom case, or both, the at least one feed-thru including a feed-thru conductor having two ends,

positioning circuitry in-between the top case and the bottom case, the circuitry adapted to be enclosed between the top case and the bottom case,

coupling one end of the feed-thru conductor to the circuitry positioned in-between the top case and the bottom case,

subjecting the top case and bottom case and the circuitry positioned in-between to a vacuum bake-out process,

backfilling the top case and bottom case and the circuitry positioned in-between with an inert gas or inert gas mixture,

laser welding the top case to the bottom case to create a hermetic seal,

coupling the other end of the feed-thru conductor to the header, and

coupling the header to the laser welded top case and bottom case.

2. The method according to claim 1

wherein the top case and bottom case are a titanium material.

3. The method according to claim 1

wherein the at least one feed-thru is welded or braised to the top case or bottom case, or both.

4. The method according to claim 1

further including positioning a plastic top nest and a plastic bottom nest within the top case and bottom case to support the circuitry.

5. The method according to claim 1

wherein the circuitry includes a top circuit portion coupled to a bottom circuit portion by way of a flexible hinge portion.

6. The method according to claim 1

further including positioning a power receiving coil in-between the top case and bottom case and coupling the power receiving coil to the circuitry.

7. The method according to claim 1

further including positioning a rechargeable battery in-between the top case and bottom case and coupling the rechargeable battery to the circuitry.

8. The method according to claim 1

further including positioning a weld band in-between the top case and bottom case to protect the circuitry during laser welding.

9. The method according to claim 1

further including wirelessly downloading application software, or changes to the application software, to the implantable pulse generator circuitry before or after the top case and bottom case are welded together.

10. The method according to claim 1

wherein the circuitry is preprogrammed with operating system software.

11. The method according to claim 1

wherein the hermetically sealed implantable pulse generator is sized to have a thickness of between about 5 mm and 15 mm, a width of between about 30 mm and 60 mm, and a length of between about 45 mm and 60 mm.

12. The method according to claim 1

wherein the hermetically sealed implantable pulse generator is adapted to be implanted in subcutaneous tissue at an implant depth of between about five millimeters and about twenty millimeters.

13. A hermetically sealed implantable pulse generator comprising

a top case and a bottom case and a header, at least one feed-thru coupled to the top case or the bottom case, or both, the at least one feed-thru including a feed-thru conductor having two ends,

circuitry positioned in-between the top case and the bottom case operable for generating electrical stimulation pulses, with one end of the feed-thru conductor coupled to the circuitry positioned in-between the top case and the bottom case,

wherein the top case and bottom case and the circuitry positioned in-between are subjected to a vacuum bake-out process, and the top case and bottom case and the circuitry positioned in-between are backfilled with an inert gas or inert gas mixture, and

the top case and bottom case are welded together to create a hermetic seal, and the other end of the feed-thru conductor is coupled to the header after the top case and bottom case are welded together.

14. The implantable pulse generator according to claim 13

wherein the top case and bottom case are a titanium material.

15. The implantable pulse generator according to claim 13

wherein the at least one feed-thru is welded or braised to the top case or bottom case, or both.

16. The implantable pulse generator according to claim 13

further including positioning a plastic top nest and a plastic bottom nest within the top case and bottom case to support the circuitry.

17. The implantable pulse generator according to claim 13

wherein the circuitry includes a top circuit portion coupled to a bottom circuit portion by way of a flexible hinge portion.

18. The implantable pulse generator according to claim 13

further including a power receiving coil positioned in-between the top case and bottom case and coupled to the circuitry.

19. The implantable pulse generator according to claim 13

further including a rechargeable battery positioned in-between the top case and bottom case and coupled to the circuitry.

20. The implantable pulse generator according to claim 13

further including a weld band positioned in-between the top case and bottom case to protect the circuitry during laser welding.

21. The implantable pulse generator according to claim 13

further including application software or changes to the application software wirelessly downloaded to the implantable pulse generator circuitry before or after the top case and bottom case are welded together.

22. The implantable pulse generator according to claim 13

wherein the circuitry is preprogrammed with operating system software.

23. The implantable pulse generator according to claim 13

wherein the hermetically sealed implantable pulse generator is sized to have a thickness of between about 5 mm and 15 mm, a width of between about 30 mm and 60 mm, and a length of between about 45 mm and 60 mm.

24. The implantable pulse generator according to claim 13

wherein the hermetically sealed implantable pulse generator is adapted to be implanted in subcutaneous tissue at an implant depth of between about five millimeters and about twenty millimeters.

25. A method of programming a hermetically sealed implantable pulse generator comprising

providing a hermetically sealed implantable pulse generator, the implantable pulse generator provided with or without application software necessary to control the sequencing and stimulus parameters of the implantable pulse generator for a predefined physiologic condition,

using wireless telemetry, programming the implantable pulse generator with the desired application software adapted to control the sequencing and stimulus parameters of the implantable pulse generator for a predefined physiologic condition.

26. A method according to claim 25

wherein the physiologic condition is selected from the group consisting of urinary incontinence, fecal incontinence, micturition/retention, defecation/constipation, restoration of sexual function, pelvic floor muscle activity, pelvic pain, obstructive sleep apnea, deep brain stimulation, pain management, heart conditions, gastric function, and restoration of motor control.

27. A method according to claim 25

using a clinical programmer to program the sequencing and stimulus parameters of the implantable pulse generator.

28. The method according to claim 25

further including, using wireless telemetry, reprogramming the implantable pulse generator with a different application software necessary to control the sequencing and stimulus parameters of the implantable pulse generator for a different predefined physiologic condition.

29. A method according to claim 28

wherein a modified clinical programmer is used to reprogram the implantable pulse generator.

30. The method according to claim 25

the implantable pulse generator further including operating system software including a system software module, the system software module including an interface to the application software.

31. The method according to claim 30

wherein the application software interfaces to the system software module by using calls through the interface software.