Standalone implantable medical power module

• US 7,009,362 B2
• Filed: 11/19/2003
• Issued: 03/07/2006
• Est. Priority Date: 11/07/2001
• Status: Expired due to Fees

• Current Assignee: Quallion, LLC (EnerSys)
• Original Assignee: Quallion, LLC (EnerSys)
• Inventors: Tsukamoto, Hisashi, Tan, Pang Hoo
• Primary Examiner(s): Tso, Edward H.
• Application Number:
  US10/718,927
• Publication Number:
  US 20040106963A1
• Time in Patent Office: 839 Days
• Field of Search: 320/107, 320/112, 320/114, 320/115, 320/150, 320/153, 607/116, 607/119
• US Class Current: 320/107
• CPC Class Codes: A61N 1/37223 Circuits for electromagnetic coupling
• CPC Class Codes: A61N 1/3787 from an external energy source
• CPC Class Codes: H01M 10/44 Methods for charging or discharging circuits for charging H02J7/00
• CPC Class Codes: H01M 10/613 Cooling or keeping cold
• CPC Class Codes: H01M 10/623 Portable devices, e.g. mobile telephones, cameras or pacemakers
• CPC Class Codes: H01M 10/6554 Rods or plates
• CPC Class Codes: H01M 10/658 by thermal insulation or shielding
• CPC Class Codes: H01M 10/659 by heat storage or buffering, e.g. heat capacity or liquid-solid phase changes or transition
• CPC Class Codes: H02J 2310/23 The load being a medical device, a medical implant, or a life supporting device
• CPC Class Codes: H02J 50/10 using inductive coupling
• CPC Class Codes: H02J 50/90 involving detection or optimisation of position, e.g. alignment
• CPC Class Codes: H02J 7/00034 Charger exchanging data with an electronic device, i.e. telephone, whose internal battery is under charge
• CPC Class Codes: H02J 7/00302 Overcharge protection
• CPC Class Codes: H02J 7/00304 Overcurrent protection
• CPC Class Codes: H02J 7/00306 Overdischarge protection
• CPC Class Codes: H02J 7/00309 Overheat or overtemperature protection
• CPC Class Codes: H02J 7/0042 characterised by the mechanical construction
• CPC Class Codes: Y02E 60/10 Energy storage using batteries

Abstract

Disclosed is a medically implantable integrated biocompatible power module incorporating a power source (e.g., battery), a power management circuit (PMC), a magnetically inductive coupling system (MICS) for remote communication and/or inductive charging and a homing device for locating the implanted inductive charging coil. Three configurations are disclosed, each generally suitable for a specified range of energy capacities. The implantable power module (IPM) allows for improved design flexibility for medical devices since the power source may be located remotely and be recharged safely in situ. Special safety aspects may be incorporated, including endothermic phase change heat absorption material (HAM), emergency energy disconnect and emergency energy drain circuits. Communication (one or two way) may be carried out using the inductive charging link, a separate inductive pathway, or other pathway such as RF or via light waves. Homing devices and other means for precisely locating the IPM and/or MICS are disclosed.

Claims

1. A collection, comprising:

a plurality of implantable medical devices that are each of a different type; and

a standalone implantable power module configured to power each of the medical devices, the module configured to be removably connected to each medical device such that the medical device is located external to the module, the module comprising;

a sealed biocompatible case enclosing a power source for powering the medical devices;

a power management circuit; and

one or more inductive charging coils.

2. The collection of claim 1 wherein the power source includes an electrochemical storage device.

3. The collection of claim 1 wherein the power source includes at least one primary battery.

4. The collection of claim 1 wherein the power source is shielded with a ferrous material.

5. The collection of claim 1 wherein the power management circuit and the inductive charging coil are enclosed within the sealed biocompatible case.

6. The collection of claim 1 wherein the one or more said inductive charging coils is located outside the sealed biocompatible case.

7. The collection of claim 6 wherein the coil is coated with a polymer coating.

8. The collection of claim 1, further comprising:

a communication means for remotely interrogating the status of the power module.

9. The collection of claim 1, further comprising:

a means for remotely controlling the power module.

10. The collection of claim 1, wherein the module includes at least one connector for connecting the module to the medical devices such that a hermetic seal is formed between the power module and the medical device.

11. The collection of claim 1, wherein the module is connected directly to the selected medical device.

12. The collection of claim 1, wherein the medical devices are configured to be plugged directly into the module.

13. The collection of claim 1, wherein one or more of the inductive charging coils surrounds the power source.

14. The collection of claim 1, wherein the medical devices are selected from a group consisting of:

cardiac defibrillators, cardiac pacemakers, cardiac assist pumps, artificial hearts, neuromuscular stimulators, cochlear implants, artificial hearing devices, artificial vision devices, deep brain stimulation devices, electronic pain blockers, automatic drug delivery devices, therapeutic alarm or signal devices, and sensor or biotelemetry devices.

15. A collection, comprising:

a plurality of medical devices that are each of a different type; and

a standalone implantable power module configured to power each of the medical devices, the module configured to be removably connected to each medical device such that the medical device is located external to the module.

16. The collection of claim 15 wherein the power module has a capacity of approximately 0.1 to 10 mAh.

17. The collection of claim 15 wherein the power module has a capacity of approximately 10 to 500 mAh.

18. The collection of claim 15 wherein the power module has a capacity of approximately 500 mAh to 20 Ah.

19. The collection of claim 15, wherein the module is directly connectable to each medical device.

20. The collection of claim 15 further characterized by being connectable to each the medical device via a lead.

21. A method, comprising:

selecting an implantable medical device from among a plurality of medical devices that are each of a different type, each medical device being removably connectable to a power module configured to power each of the medical devices, the module configured to be connected to each medical device such that the medical device is located external to the module, the module comprising a sealed biocompatible case enclosing a power source for powering a medical device connected to the module;

connecting the power module to the selected medical device.

22. The method of claim 21, further comprising:

injecting the power module into the body.

23. The method of claim 21, further comprising:

implanting the selected medical device in a body, and

locating the power module after the power module has been implanted in the body.

24. The method of claim 21, wherein the power module is connected to the medical device via a hermetic connector prior to implanting the power module in the body.

25. The method of claim 21, connecting the power module to the selected medical device includes connecting the module directly to the selected medical device.

26. The method of claim 21, connecting the power module to the selected medical device includes plugging the module directly into the selected medical device.

27. The method of claim 21, wherein the medical devices are selected from a group consisting of:

cardiac defibrillators, cardiac pacemakers, cardiac assist pumps, artificial hearts, neuromuscular stimulators, cochlear implants, artificial hearing devices, artificial vision devices, deep brain stimulation devices, electronic pain blockers, automatic drug delivery devices, therapeutic alarm or signal devices, and sensor or biotelemetry devices.