ELECTROMAGNETIC RESONANT CIRCUIT SLEEVE FOR IMPLANTABLE MEDICAL DEVICE

• US 20070038285A1
• Filed: 05/19/2006
• Published: 02/15/2007
• 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:
  US11/419,270
• Publication Number:
  US 20070038285A1
• Time in Patent Office: Days
• US Class Current: 623/1.150
• 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:

an expandable substantially cylindrical substrate having an axial closed end and an axial open end, said axial closed end being within said axial open end;

a dielectric material formed on a portion of said expandable substantially cylindrical substrate; and

a plurality of conductive traces formed on said dielectric material and said expandable substantially cylindrical substrate, said conductive traces forming a variable inductive-capacitance circuit.

2. The device as claimed in claim 1, wherein said conductive traces form a variable resistive-inductive-capacitance circuit.

3. The device as claimed in claim 1, further comprising a discrete capacitor operatively connected to said traces and attached to said expandable substantially cylindrical substrate.

4. The device as claimed in claim 1, wherein said expandable substantially cylindrical substrate is biodegradable.

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

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

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

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

9. The device as claimed in claim 1, wherein said dielectric material is formed at said axial closed end of said expandable substantially cylindrical substrate.

10. The device as claimed in claim 1, wherein said dielectric material is formed at said axial open end of said expandable substantially cylindrical substrate.

11. The device as claimed in claim 9, wherein said dielectric material, portions of said traces formed on said dielectric material, portions of said traces formed on said axial open end of said expandable substantially cylindrical substrate forming a variable capacitor.

12. The device as claimed in claim 10, wherein said dielectric material, portions of said traces formed on said dielectric material, portions of said traces formed on said axial closed end of said expandable substantially cylindrical substrate forming a variable capacitor.

13. The device as claimed in claim 1, wherein said axial closed end and said axial open end having a relative movement therebetween such that a circumference of said expandable substantially cylindrical substrate is variable.

14. The device as claimed in claim 1, wherein said axial open end includes a member to prevent said axial closed end from being without said axial open end.

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

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

17. The device as claimed in claim 16, wherein said pattern of conductive traces is expandable.

18. The device as claimed in claim 16, wherein said pattern of conductive traces is expandable without damage thereto.