ELECTROMAGNETIC RESONANT CIRCUIT SLEEVE FOR IMPLANTABLE MEDICAL DEVICE

• US 20070100231A1
• Filed: 05/19/2006
• Published: 05/03/2007
• Est. Priority Date: 05/19/2005
• Status: Abandoned Application

• Current Assignee: Biophan Technologies Incorporated
• Original Assignee: Biophan Technologies Incorporated
• Inventors: Gray, Robert, MacDonald, Stuart
• Application Number:
  US11/419,273
• Publication Number:
  US 20070100231A1
• Time in Patent Office: Days
• US Class Current: 600/423
• CPC Class Codes: A61F 2/07 Stent-grafts
• CPC Class Codes: A61F 2/86 Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure
• CPC Class Codes: A61F 2210/0004 bioabsorbable
• CPC Class Codes: A61F 2210/0076 multilayered, e.g. laminated structures
• CPC Class Codes: A61F 2250/0001 Means for transferring electromagnetic energy to implants

Abstract

A medical device enables effective magnetic resonance imaging inside a lumen of a medical device. The medical device includes a plurality of conductive traces formed on a substrate. The conductive traces form an inductive-capacitance circuit or a resistive-inductive-capacitance circuit. The inductive-capacitance circuit or resistive-inductive-capacitance circuit is tuned to a frequency associated with magnetic resonance imaging, an operating frequency associated with a magnetic resonance imaging scanner, a harmonic of an operating frequency associated with a magnetic resonance imaging scanner, or a sub-harmonic of an operating frequency associated with a magnetic resonance imaging scanner.

Claims

1. A device for enabling effective magnetic resonance imaging inside a lumen of a medical device, comprising:

a substantially cylindrical substrate;

a first plurality of conductive traces formed on said substantially cylindrical substrate; and

a second plurality of conductive traces formed on said substantially cylindrical substrate;

said first plurality of conductive traces forming a first plurality of loops to create a first spiraling inductive coil having two overlapping ends with a non-conductive material therebetween, adjacent loops of said first spiraling coil having a non-conductive material therebetween, the two overlapping ends with a non-conductive material therebetween and adjacent loops of said first spiraling coil having a non-conductive material therebetween forming a first capacitor;

said second plurality of conductive traces forming a second plurality of loops to create a second spiraling inductive coil having two overlapping ends with a non-conductive material therebetween, adjacent loops of said second spiraling coil having a non-conductive material therebetween, the two overlapping ends with a non-conductive material therebetween and adjacent loops of said second spiraling coil having a non-conductive material therebetween forming a second capacitor;

said first spiraling inductive coil and said second spiraling inductive coil being approximately orthogonally oriented on said substantially cylindrical substrate;

said first spiraling inductive coil and said first capacitor being tuned to a first frequency associated with magnetic resonance imaging;

said second spiraling inductive coil and said second capacitor being tuned to a first frequency associated with magnetic resonance imaging.

2. The device as claimed in claim 1, wherein said first spiraling inductive coil and said first capacitor are tuned to an operating frequency associated with a magnetic resonance imaging scanner.

3. The device as claimed in claim 1, wherein said first spiraling inductive coil and said first capacitor are tuned to a harmonic of an operating frequency associated with a magnetic resonance imaging scanner.

4. The device as claimed in claim 1, wherein said first spiraling inductive coil and said first capacitor are tuned to a sub-harmonic of an operating frequency associated with a magnetic resonance imaging scanner.

5. The device as claimed in claim 1, wherein said substrate is biodegradable.

6. The device as claimed in claim 1, wherein said substrate is thermally degradable.

7. The device as claimed in claim 1, wherein said substrate is chemically degradable.

8. The device as claimed in claim 1, wherein said substrate is optically degradable.

9. The device as claimed in claim 1, wherein said substrate is degradable.

10. The device as claimed in claim 1, wherein said conductive traces are expandable.

11. The device as claimed in claim 1, wherein said conductive traces are expandable without damage thereto.

12. The device as claimed in claim 1, wherein said conductive traces form a pattern.

13. The device as claimed in claim 12, wherein said pattern of conductive traces is expandable.

14. The device as claimed in claim 12, wherein said pattern of conductive traces is expandable without damage thereto.

15. The device as claimed in claim 1, wherein each loop of said spiraling coils has a distinct area.

16. The device as claimed in claim 1, wherein each loop of said spiraling coils has a distinct shape.

17. The device as claimed in claim 1, wherein each loop of said spiraling coils has a distinct area and a distinct shape.