System for transcutaneous energy transfer to an implantable medical device with mating elements

• US 7,848,814 B2
• Filed: 10/31/2006
• Issued: 12/07/2010
• Est. Priority Date: 04/28/2006
• Status: Active Grant

• Current Assignee: Medtronic Incorporated (Medtronic Plc)
• Original Assignee: Medtronic Incorporated (Medtronic Plc)
• Inventors: Kast, John E., Goblish, Todd P., Torgerson, Nathan A., Kelly, Kevin J.
• Primary Examiner(s): Layno; Carl H
• Assistant Examiner(s): PATEL, NATASHA
• Application Number:
  US11/590,431
• Publication Number:
  US 20070255350A1
• Time in Patent Office: 1,498 Days
• Field of Search: 607/33, 607/60, 607/61, 607/63, 607/65, 607/75, 607/155
• US Class Current: 607/33
• CPC Class Codes: A61N 1/37229 Shape or location of the implanted or external antenna
• CPC Class Codes: A61N 1/3787 from an external energy source

Abstract

System for transcutaneous energy transfer to an implantable medical device adapted to be implanted under a cutaneous boundary having a housing having a first surface adapted to face the cutaneous boundary, the first surface of the housing of the implantable medical device having a first mating element, therapeutic componentry and a secondary coil operatively coupled to the therapeutic componentry. An external power source has housing having a first surface adapted to be placed closest to the cutaneous boundary, the first surface of the housing of the external power source having a second mating element and a primary coil capable of inductively energizing the secondary coil when externally placed in proximity of the secondary coil. The first mating element and the second mating element are configured to tactilely align the external power source with the implantable medical device.

Claims

1. A system for transcutaneous energy transfer, comprising:

an implantable medical device adapted to be implanted under a continuous cutaneous boundary, comprising;

a housing having a first surface adapted to face said continuous cutaneous boundary, said first surface of said housing of said implantable medical device having a first mating element;

a therapeutic componentry; and

a secondary coil operatively coupled to said therapeutic componentry; and

an external power source, comprising;

a housing having a first surface adapted to be placed closest to said continuous cutaneous boundary, said first surface of said housing of said external power source having a second mating element; and

a primary coil transcutaneously inductively energizing said secondary coil across said continuous cutaneous boundary when externally placed in proximity of said secondary coil;

said first mating element and said second mating element being configured to tactilely align said external power source with said implantable medical device across said continuous cutaneous boundary; and

wherein a depression on said first surface of said implantable medical device constitutes said first mating element and wherein said second mating element of said external power source comprises a projection.

2. A system as in claim 1 wherein said first mating element and said second mating element are configured to tactilely align said primary coil with said secondary coil.

3. A system as in claim 2 wherein said first mating element is configured to be off-center of said first surface of said implantable medical device.

4. A system as in claim 2 wherein said first surface of said implantable medical device has a plurality of first mating elements and wherein said first surface of said external power source has a plurality of second mating elements and wherein said plurality of first mating elements mate with respective ones of said plurality of second mating elements are collectively configured to tactilely coaxially align said primary coil with said secondary coil.

5. A system as in claim 4 wherein said plurality of first mating elements and said plurality of second mating are asymmetrically arranged enabling tactile orientation of said external power source with respect to said implantable medical device.

6. A system as in claim 2 wherein said first mating element comprises a ring and wherein said second mating element comprises a ring mating with said ring of said first mating element.

7. A system as in claim 6 wherein said ring of said first mating element and said ring of said second mating element are circular.

8. A system as in claim 6 wherein said ring of said first mating element and said ring of said second mating element are oval.

9. A method of transcutaneous energy transfer to a medical device implanted under a continuous cutaneous boundary of a patient having a secondary charging coil using an external power source having a housing containing a primary coil, said housing having a first surface adapted to face said continuous cutaneous boundary, said first surface of said housing of said implantable medical device having a first mating element;

and having an external power source having a housing having a first surface adapted to be placed closest to said continuous cutaneous boundary, said first surface of said housing of said external power source having a second mating element, comprising the steps of;

positioning said primary coil externally of said patient with respect to said secondary coil;

tactilely aligning said primary coil of said external power source with said secondary coil of said implantable medical device across said continuous cutaneous boundary by moving said external power source with respect to said implantable medical device by aligning said second mating element of said external power source with said first mating element of said implantable medical device; and

transferring energy transcutaneously across said contiguous cutaneous boundary from said primary coil to said secondary coil.

10. A method as in claim 9 wherein said tactilely aligning step further comprises aligning said primary coil with respect to said secondary coil using a depression on said first surface of said external power source constituting said second mating element and said first mating element of said implantable medical device comprising a projection.

11. A method as in claim 9 wherein said tactilely aligning step further comprises aligning said primary coil with respect to said secondary coil using a depression on said first surface of said implantable medical device constituting said first mating element and said second mating element of said external power source comprising a projection.

12. A method as in claim 9 wherein said tactilely aligning step utilizes a plurality of first mating elements and a plurality of second mating elements.

13. A method as in claim 12 wherein said tactilely aligning step further comprises orienting said external power source with respect to said implantable medical device utilizing an asymmetrical arrangement of said plurality of first mating elements and said plurality of second mating elements.

14. A method as in claim 9 wherein said first mating element comprises a ring and wherein said second mating element a ring mating with said ring of said first mating element.

15. A method as in claim 14 wherein said ring of said first mating element and said ring of said second mating element are circular.

16. A method as in claim 14 wherein said ring of said first mating element and said ring of said second mating element are oval.