MRI COMPATIBLE IMPLANTED ELECTRONIC MEDICAL DEVICE WITH POWER AND DATA COMMUNICATION CAPABILITY

• US 20080051854A1
• Filed: 08/24/2007
• Published: 02/28/2008
• Est. Priority Date: 11/04/2005
• Status: Active Grant

• Current Assignee: Kenergy, Inc.
• Original Assignee: Kenergy, Inc.
• Inventors: Denker, Stephen, Bulkes, Cherik
• Granted Patent: US 8,233,985 B2
• Time in Patent Office: Days
• US Class Current: 607/60
• CPC Class Codes: A61N 1/086 Magnetic resonance imaging [MRI] compatible leads
• CPC Class Codes: A61N 1/3718 Monitoring of or protection against external electromagnetic fields or currents
• CPC Class Codes: A61N 1/37211 Means for communicating with stimulators
• CPC Class Codes: A61N 1/3787 from an external energy source

Abstract

An antenna module, that is compatible with a magnetic resonance imaging scanner for the purpose of diagnostic quality imaging, is adapted to be implanted inside an animal. The antenna module comprises an electrically non-conducting, biocompatible, and electromagnetically transparent enclosure with inductive antenna wires looping around an inside surface. An electronic module is enclosed in an electromagnetic shield inside the enclosure to minimize the electromagnetic interference from the magnetic resonance imaging scanner.

Claims

1. An implantable antenna module for a medical device and which is compatible with a magnetic resonance imaging scanner for a purpose of diagnostic quality imaging, said implantable antenna module comprising:

an enclosure that is electrically non-conductive, electromagnetically transparent, and biocompatible, and that has an inside surface and an outside surface;

an inductive antenna having a wire or a coil pattern formed on the inside surface; and

an electronic module enclosed in an electromagnetic shield inside the enclosure to minimize the electromagnetic interference from the magnetic resonance imaging scanner.

2. The implantable antenna module as recited in claim 1 further comprising a power supply to furnish electrical energy to the electronic module.

3. The implantable antenna module as recited in claim 2 wherein a part of the electronic module stimulates a tissue of an animal.

4. The implantable antenna module as recited in claim 2 wherein a part of the electronic module controls operation of the medical device.

5. The implantable antenna module as recited in claim 2 wherein the power supply is an implantable battery.

6. The implantable antenna module as recited in claim 2 wherein the power supply is rechargeable.

7. The implantable antenna module as recited in claim 2 wherein the electrical energy is derived from a radio frequency pickup coil.

8. The implantable antenna module as recited in claim 1 wherein the inductive antenna wirelessly receives electrical energy from an external power source for powering the medical device.

9. The implantable antenna module as recited in claim 1 wherein the inductive antenna is used for communicating with an external communication device.

10. The implantable antenna module as recited in claim 1 wherein the inductive antenna is integrated on the inside of the enclosure.

11. The implantable antenna module as recited in claim 1 wherein a part of the electronic module is a transponder circuit.

12. An implantable power antenna module for a medical device and which is compatible with a magnetic resonance imaging scanner for a purpose of diagnostic quality imaging, said implantable power antenna module comprising:

an enclosure that is electrically non-conductive, electromagnetically transparent, and biocompatible, and that has an inside surface and an outside surface;

a magnetic field power antenna having a wire or a coil pattern formed on the inside surface of the enclosure and forming a resonant circuit with a capacitor inside the enclosure;

an electronic module enclosed in an electromagnetic shield inside the enclosure to minimize the electromagnetic interference from the magnetic resonance imaging scanner; and

a power supply to furnish electrical energy to the electronic module.

13. The implantable power antenna module as recited in claim 12 wherein a part of the electronic module stimulates tissue of an animal.

14. The implantable power antenna module as recited in claim 12 wherein a part of the electronic module controls function of the medical device.

15. The implantable power antenna module as recited in claim 12 wherein the power supply is an implantable battery.

16. The implantable power antenna module as recited in claim 12 wherein the power supply is rechargeable.

17. The implantable power antenna module as recited in claim 12 wherein the electrical energy is derived from a radio frequency pickup coil.

18. The implantable power antenna module as recited in claim 12 wherein the magnetic field power antenna wirelessly receives electrical energy from an external power source for powering the medical device.

19. An implantable communication antenna module that is compatible with a magnetic resonance imaging scanner for a purpose of diagnostic quality imaging, said implantable communication antenna module comprising:

an enclosure that is electrically non-conductive, electromagnetically transparent, and biocompatible, and that has an inside surface and an outside surface;

a magnetic field communication antenna having a wire or a coil pattern formed on the inside surface of the enclosure and forming a resonant circuit with a capacitor inside the enclosure; and

an electronic module enclosed in an electromagnetic shield inside of the enclosure to minimize the electromagnetic interference from the magnetic resonance imaging scanner, wherein a part of the electronic module is a transponder circuit.

20. The implantable communication antenna module as recited in claim 19 wherein the antenna communicates with an external communication device.

21. The implantable communication antenna module as recited in claim 19 wherein the antenna is integrated inside the enclosure.