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US 2006/0041294 A1Published application
Magnetic resonance imaging interference immune device
AssigneeBiophan Technologies, Inc.
InventorRobert Gray
Life of this patent
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Abstract
A wire form includes a conductor having a distal end and a proximal end. The conductor is coiled and has a predetermined spacing between adjacent coils. The predetermined spacing provides a parasitic capacitance and an inductance. The parasitic capacitance and inductance have a resonance frequency tuned to about an excitation signal's frequency of a magnetic-resonance imaging scanner.
Claims13
A wire form, comprising:
- a conductor having a distal end and a proximal end;
- said conductor being coiled;
- said conductor having a predetermined spacing between adjacent coils, said predetermined spacing providing a parasitic capacitance and an inductance, said parasitic capacitance and inductance having a resonance frequency shifted towards an excitation signal's frequency of a magnetic-resonance imaging scanner.
A method for forming a wire form, comprising:
- (a) stretching a spring wire form to create gaps between adjacent coils, the gaps providing a parasitic capacitance and an inductance, the parasitic capacitance and inductance having a resonance frequency not tuned to an excitation signal's frequency of a magnetic-resonance imaging scanner.
A method for forming a wire form, comprising:
- (a) coating a conductor with an electrically insulative layer, an electrically conductive shielding layer, and a protective and electrically insulative layer;
- (b) coiling the coated conductor such that the coiled coated conductor provides a parasitic capacitance and an inductance, the parasitic capacitance and inductance having a resonance frequency not tuned to an excitation signal's frequency of a magnetic-resonance imaging scanner.
Dependencies are inferred from the claim text.