Medical devices having electrical circuits with multilayer regions

• US 20070239256A1
• Filed: 03/22/2006
• Published: 10/11/2007
• Est. Priority Date: 03/22/2006
• Status: Abandoned Application

• Current Assignee: Boston Scientific Scimed, Inc. (Boston Scientific Corporation)
• Original Assignee: Boston Scientific Scimed, Inc. (Boston Scientific Corporation)
• Inventors: Weber, Jan, Jagger, Karl
• Application Number:
  US11/387,033
• Publication Number:
  US 20070239256A1
• Time in Patent Office: Days
• US Class Current: 623/1.150
• CPC Class Codes: A61B 5/055 involving electronic [EMR] or nuclear [NMR] magnetic resonance, e.g. magnetic resonance imaging
• CPC Class Codes: A61F 2/82 Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents stent-grafts for tubular structures of the body other than blood vessels A61F2/04; stent-grafts for blood vessels A61F2/07; instruments specially adapted for placement or removal of stents or stent-grafts A61F2/95; for closing wounds, or holding wounds closed A61B17/04 - A61B17/115; dilators A61M29/00
• CPC Class Codes: A61F 2250/0001 Means for transferring electromagnetic energy to implants
• CPC Class Codes: A61F 2250/0043 differing in electric properties, e.g. in electrical conductivity, in galvanic properties
• CPC Class Codes: A61L 31/10 Macromolecular materials
• CPC Class Codes: A61L 31/18 Materials at least partially X-ray or laser opaque

Abstract

The present invention relates to implantable or insertable medical devices that contain a substrate and one or more electrical circuits disposed over the substrate. The electrical circuits in the devices of the present invention contain at least one multilayer region, which in turn contains (a) a plurality of polyelectroyte layers which contain at least one type of polyelectrolyte and/or (b) a plurality of particle layers which contain at least one type of charged particle.

Claims

1. An implantable or insertable medical device comprising a substrate and an electrical circuit that comprises a multilayer region disposed over said substrate, said multilayer region comprising (a) a plurality of polyelectroyte layers which comprise a polyelectrolyte, (b) a plurality of particle layers which comprise charged particles, or (c) a plurality of polyelectroyte layers which comprise a polyelectrolyte and a plurality of particle layers which comprise charged particles.

2. The implantable or insertable medical device of claim 1, wherein said multilayer region is a conductive region.

3. The implantable or insertable medical device of claim 1, wherein said particles comprise a conductive material.

4. The implantable or insertable medical device of claim 1, wherein said particles comprise gold.

5. The implantable or insertable medical device of claim 1, wherein said particles comprise nanoparticles.

6. The implantable or insertable medical device of claim 1, wherein said multilayer region is an insulating region.

7. The implantable or insertable medical device of claim 1, wherein said circuit comprises an inductor.

8. The implantable or insertable medical device of claim 7, wherein said inductor comprises a conductive coil comprising a conductive multilayer region.

9. The implantable or insertable medical device of claim 8, wherein said coil is selected from a helical coil and a birdcage coil.

10. The implantable or insertable medical device of claim 1, wherein said electrical circuit comprises a capacitor.

11. The implantable or insertable medical device of claim 10, wherein an electrode of said capacitor comprises a conductive multilayer region.

12. The implantable or insertable medical device of claim 10, wherein said capacitor comprises an insulating multilayer region

13. The implantable or insertable medical device of claim 1, wherein said electrical circuit comprises an inductor and a capacitor.

14. The implantable or insertable medical device of claim 13, wherein said circuit is a resonant circuit that has a frequency range which encompasses an emitted radiofrequency of an external device.

15. The implantable or insertable medical device of claim 14, wherein said external device is an MRI machine.

16. The implantable or insertable medical device of claim 15, wherein said device is a stent.

17. The implantable or insertable medical device of claim 14, wherein said device is a balloon.

18. The implantable or insertable medical device of claim 17, wherein said resonant circuit has a resonant frequency that changes as said balloon is inflated.

19. The implantable or insertable medical device of claim 17, wherein said balloon contains a plurality of resonant circuits each having a resonant frequency that changes as said balloon is inflated.

20. The implantable or insertable medical device of claim 1, wherein said circuit comprises an antenna that comprises a conductive multilayer region.

21. The implantable or insertable medical device of claim 1, wherein said circuit is biostable.

22. The implantable or insertable medical device of claim 1, wherein said circuit is bioabsorbable.

23. The implantable or insertable medical device of claim 1, wherein said substrate is selected from a metallic substrate, a polymeric substrate and a ceramic substrate.

24. The implantable or insertable medical device of claim 1, wherein said substrate is biostable.

25. The implantable or insertable medical device of claim 1, wherein said substrate is bioabsorbable.

26. The implantable or insertable medical device of claim 1, wherein said medical devices are selected from stents, grafts, catheters, balloons, sensors, MEMS devices, sheaths, pumps and drug delivery tubes.

27. The implantable or insertable medical device of claim 1, wherein said electrical circuit comprises a diode.

28. The implantable or insertable medical device of claim 27, wherein said diode comprises a plurality of particle layers which comprise charged semiconductor particles.

29. The implantable or insertable medical device of claim 1, wherein said electrical circuit comprises a rectifier.