Electromagnetic radiation transparent device and method of making thereof

• US 20050049481A1
• Filed: 08/20/2004
• Published: 03/03/2005
• Est. Priority Date: 08/25/2003
• Status: Abandoned Application

• Current Assignee: Biophan Technologies Incorporated
• Original Assignee: Biophan Technologies Incorporated
• Inventors: Gray, Robert W., Helfer, Jeffrey L.
• Application Number:
  US10/922,335
• Publication Number:
  US 20050049481A1
• Time in Patent Office: Days
• US Class Current: 600/407
• CPC Class Codes: A61B 2090/374 NMR or MRI
• CPC Class Codes: A61B 5/02007 Evaluating blood vessel condition, e.g. elasticity, compliance
• CPC Class Codes: A61B 5/055 involving electronic [EMR] or nuclear [NMR] magnetic resonance, e.g. magnetic resonance imaging
• 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 2/90 characterised by a net-like or mesh-like structure
• CPC Class Codes: A61F 2/91 made from perforated sheet material or tubes, e.g. perforated by laser cuts or etched holes
• CPC Class Codes: A61F 2210/009 magnetic
• CPC Class Codes: A61F 2220/0016 with sharp anchoring protrusions, e.g. barbs, pins, spikes
• CPC Class Codes: A61L 31/022 Metals or alloys
• CPC Class Codes: A61L 31/124 of other specific inorganic materials not covered by A61L31/122 or A61L31/123
• CPC Class Codes: A61L 31/18 Materials at least partially X-ray or laser opaque
• CPC Class Codes: A61N 1/16 Screening or neutralising undesirable influences from or using, atmospheric or terrestrial radiation or fields using atmospheric electricity or earth currents H05F3/00
• CPC Class Codes: A61N 2/00 Magnetotherapy
• CPC Class Codes: G01R 33/285 Invasive instruments, e.g. catheters or biopsy needles, specially adapted for tracking, guiding or visualization by NMR

Abstract

A medical device includes a pattern of electrically conductive material. The pattern of electrically conductive material has an anti-antenna geometrical shape such that the anti-antenna geometrical shape substantially prevents the medical device from creating an imaging artifact and/or substantially allows imaging of a volume within the medical device. The pattern may be formed by multiple “figure-8” shaped electrical conductors, multiple “figure-8” emulating electrical conductors, multiple sine-wave-like shaped electrical conductors, multiple zig-zag patterned electrical conductors, by multiple electrical conductors, each having sequential conductive loops, and/or a single conductor weaved into a loop mesh. The electrically conductive material may be titanium, tantalum, nitinol, stainless steel, and/or NbZr.

Claims

1. A medical stent, comprising:

a plurality of links, each link being connected together so as to form a cylindrical shaped medical stent, each link being shaped so as to be expandable, said expansion of said links causing an increase in a radius of the medical stent.

2. The medical stent as claimed in claim 1, wherein said plurality of links are multiple electrical conductors, said multiple electrical conductors forming a pattern to substantially prevent the self-deploying medical stent from creating an imaging artifact.

3. The medical stent as claimed in claim 1, wherein said plurality of links are multiple electrical conductors, said multiple electrical conductors forming a pattern to substantially allow imaging of a volume within the stent.

4. The medical stent as claimed in claim 1, wherein said plurality of links are multiple electrical conductors, said multiple electrical conductors forming a pattern to substantially prevent the self-deploying medical stent from creating an imaging artifact and substantially allow imaging of a volume within the stent.

5. The medical stent as claimed in claim 1, wherein each link is tantalum.

6. The medical stent as claimed in claim 1, wherein each link is nitinol.

7. The medical stent as claimed in claim 1, wherein each link is stainless steel.

8. The medical stent as claimed in claim 1, wherein each link is NbZr.

9. The medical stent as claimed in claim 1, wherein each link is titanium.

10. A medical stent, comprising:

a plurality of links, each link being connected together so as to form a cylindrical shaped medical stent, each link being shaped so as to be expandable upon application of heat, said expansion of said links causing an increase in a radius of the medical stent.

11. The medical stent as claimed in claim 10, wherein said plurality of links are multiple electrical conductors, said multiple electrical conductors forming a pattern to substantially prevent the self-deploying medical stent from creating an imaging artifact.

12. The medical stent as claimed in claim 10, wherein said plurality of links are multiple electrical conductors, said multiple electrical conductors forming a pattern to substantially allow imaging of a volume within the stent.

13. The medical stent as claimed in claim 10, wherein said plurality of links are multiple electrical conductors, said multiple electrical conductors forming a pattern to substantially prevent the self-deploying medical stent from creating an imaging artifact and substantially allow imaging of a volume within the stent.

14. The medical stent as claimed in claim 10, wherein each link is tantalum.

15. The medical stent as claimed in claim 10, wherein each link is nitinol.

16. The medical stent as claimed in claim 10, wherein each link is stainless steel.

17. The medical stent as claimed in claim 10, wherein each link is NbZr.

18. The medical stent as claimed in claim 10, wherein each link is titanium.