Magnetic resonance probes
First Claim
Patent Images
1. A magnetic resonance probe, comprising:
- a plurality of center conductors, at least some center conductors;
including a conductive core and an insulator disposed at least partially about the core along at least a portion of the core; and
forming a first pole of a magnetic resonance dipole antenna;
a first dielectric layer disposed at least partially about the plurality of center conductors in a proximal portion of the probe;
an outer conductive layer at least partially disposed about the first dielectric layer and forming a second pole of the magnetic resonance dipole antenna; and
a plurality of electrodes, at least one electrode being coupled to one of the center conductors and disposed at least partly on a probe surface.
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Accused Products
Abstract
A magnetic resonance probe may include a plurality of center conductors, at least some center conductors including a conductive core and an insulator disposed at least partially about the core along at least a portion of the core, a first dielectric layer disposed at least partially about the plurality of center conductors in a proximal portion of the probe, an outer conductive layer at least partially disposed about the first dielectric layer, and a plurality of electrodes, at least one electrode being coupled to one of the center conductors and disposed at least partly on a probe surface.
237 Citations
36 Claims
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1. A magnetic resonance probe, comprising:
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a plurality of center conductors, at least some center conductors; including a conductive core and an insulator disposed at least partially about the core along at least a portion of the core; and forming a first pole of a magnetic resonance dipole antenna; a first dielectric layer disposed at least partially about the plurality of center conductors in a proximal portion of the probe; an outer conductive layer at least partially disposed about the first dielectric layer and forming a second pole of the magnetic resonance dipole antenna; and a plurality of electrodes, at least one electrode being coupled to one of the center conductors and disposed at least partly on a probe surface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31)
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32. A combined magnetic resonance imaging and electrophysiology probe, comprising:
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a plurality of center conductors, at least some center conductors including a conductive core and an insulator disposed at least partially about the core along at least a portion of the core, the insulator having a thickness equal to or less than about 100 microns; a first dielectric layer disposed at least partially about the plurality of center conductors in a proximal portion of the probe; an outer conductive layer at least partially disposed about the first dielectric layer; a second dielectric layer disposed at least partially about the outer conductive layer; and a plurality of electrodes, at least one electrode coupled to one of the center conductors and disposed at least partly on the probe surface.
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33. A system for magnetic resonance imaging, comprising:
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a magnetic resonance probe, including; a plurality of center conductors, at least some center conductors; including a conductive core and an insulator disposed at least partially about the core along at least a portion of the core; and forming a first pole of a magnetic resonance dipole antenna; a first dielectric layer disposed at least partially about the plurality of center conductors in a proximal portion of the probe; an outer conductive layer disposed at least partially about the first dielectric layer and forming a second pole of the magnetic resonance dipole antenna; and a plurality of electrodes, at least one electrode coupled to one of the center conductors and disposed at least partly on the probe surface; and a interface electrically coupled to the probe, the interface including; a signal splitter that directs a signal received from the probe to a magnetic resonance pathway and an electrophysiology pathway; a high-pass filter disposed in the magnetic resonance pathway; a low-pass filter disposed in the electrophysiology pathway; a connector disposed in the magnetic resonance pathway for connecting to a magnetic resonance scanner; and a connector disposed in the electrophysiology pathway for connecting to at least one of a tissue stimulator, a electrophysiological recording system, and an ablation energy source.
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34. A magnetic resonance interventional probe assembly, comprising:
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a magnetic resonance probe, comprising a steerable distal section attached to a stiff proximal section with a plurality of electrodes held on the distal section, the distal section including a plurality of center conductors which form a first pole of a magnetic resonance dipole antenna and an outer conductive layer which forms a second pole of the antenna, each center conductor including a conductive core and an insulator disposed at least partially about the core, the insulator being configured to electrically couple the plurality of center conductors together when exposed to high frequency radiation and electrically decouple the plurality of center conductors from each other when exposed to low frequency radiation; and at least one pull wire connected to a distal tip portion of the probe to allow the distal tip to flexibly bend in response to pulling of the pull wire, wherein the probe cooperates with the at least one pull wire to define a loopless magnetic resonance antenna which allows MRI visualization of the probe tip. - View Dependent Claims (35, 36)
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Specification