Magnetic resonance imaging needle antennas
First Claim
Patent Images
1. An intracranial needle magnetic resonance imaging antenna system, comprising:
- a probe shaft having a distal end and a proximal end, the distal end of the probe shaft having a hollow needle at a distalmost end sharpened for penetrating central nervous system tissue, wherein the probe shaft is tubular and comprises an open lumen extending axially through the distalmost sharpened end, and the probe shaft further comprising a first conductor;
an insulator or dielectric covering the first conductor over at least the proximal portion of the probe shaft; and
a second conductor covering the insulator or dielectric;
wherein the first conductor, the insulator or dielectric, and the second conductor define a magnetic resonance imaging antenna, and wherein the first conductor defines the hollow needle with the open lumen and has sufficient rigidity to penetrate the tissue.
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Abstract
The invention describes a system, method, and means for an MRI transseptal needle that can be visible on an MRI, can act as an antenna and receive MRI signals from surrounding subject matter to generate high-resolution images and can enable real-time active needle tracking during MRI guided transseptal puncture procedures.
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Citations
103 Claims
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1. An intracranial needle magnetic resonance imaging antenna system, comprising:
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a probe shaft having a distal end and a proximal end, the distal end of the probe shaft having a hollow needle at a distalmost end sharpened for penetrating central nervous system tissue, wherein the probe shaft is tubular and comprises an open lumen extending axially through the distalmost sharpened end, and the probe shaft further comprising a first conductor; an insulator or dielectric covering the first conductor over at least the proximal portion of the probe shaft; and a second conductor covering the insulator or dielectric; wherein the first conductor, the insulator or dielectric, and the second conductor define a magnetic resonance imaging antenna, and wherein the first conductor defines the hollow needle with the open lumen and has sufficient rigidity to penetrate the tissue. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. An endovascular magnetic resonance imaging antenna system, comprising:
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a probe shaft having a distal end and a proximal end, the distal end of the probe shaft having a hollow first conductor with a distalmost end sharpened for penetrating vascular tissue with the hollow first conductor having an open lumen extending axially through the distalmost sharpened end, wherein the probe shaft is tubular; an insulator or dielectric covering the first conductor over at least the proximal portion of the probe shaft; and a second conductor covering the insulator or dielectric; wherein the first conductor, the insulator or dielectric, and the second conductor define a magnetic resonance imaging antenna. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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26. A genitourinary magnetic resonance imaging antenna system, comprising:
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a probe shaft having a distal end and a proximal end, the distal end of the probe shaft having a hollow needle with an open lumen at a distalmost end sharpened for penetrating genitourinary tissue, wherein the probe shaft is tubular and the probe shaft further comprises a first conductor that extends to the sharpened distalmost end of the probe shaft and defines the hollow needle; an insulator or dielectric covering the first conductor over at least the proximal portion of the probe shaft; and a second conductor covering the insulator or dielectric; wherein the first conductor, the insulator or dielectric, and the second conductor define a magnetic resonance imaging antenna. - View Dependent Claims (27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43)
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44. A nasogastric magnetic resonance imaging antenna system, comprising:
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a probe shaft having a distal end and a proximal end, the distal end of the probe shaft having a hollow needle with an axially extending open lumen at a distalmost end sharpened for penetrating nasogastric tissue, wherein the probe shaft is tubular and comprises a first conductor that defines the hollow needle; an insulator or dielectric covering the first conductor over at least the proximal portion of the probe shaft; and a second conductor covering the insulator or dielectric; wherein the first conductor, the insulator or dielectric, and the second conductor define a magnetic resonance imaging antenna. - View Dependent Claims (45, 46, 47, 48, 49, 50, 51)
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52. An endotracheal magnetic resonance imaging antenna system, comprising:
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a probe shaft having a distal end and a proximal end, the distal end of the probe shaft having a hollow needle with an open lumen at a distalmost end sharpened for penetrating tracheal tissue, wherein the probe shaft is tubular and comprises an open lumen extending axially through the distalmost sharpened end and the probe shaft further comprising a first conductor, wherein the first conductor defines the hollow needle; an insulator or dielectric covering the first conductor over at least the proximal portion of the probe shaft; and a second conductor covering the insulator or dielectric; wherein the first conductor, the insulator or dielectric, and the second conductor define a magnetic resonance imaging antenna. - View Dependent Claims (53, 54, 55, 56, 57, 58, 59)
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60. An endobiliary magnetic resonance imaging antenna system, comprising:
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a probe shaft having a distal end and a proximal end, the distal end of the probe shaft having a hollow needle at a distalmost end sharpened for penetrating biliary tissue, wherein the probe shaft is tubular and comprises an open lumen extending axially through the distalmost sharpened end and the probe shaft further comprising a first conductor that defines the hollow needle with the open lumen; an insulator or dielectric covering the first conductor over at least the proximal portion of the probe shaft; and a second conductor covering the insulator or dielectric; wherein the first conductor, the insulator or dielectric, and the second conductor form a magnetic resonance imaging antenna. - View Dependent Claims (61, 62, 63, 64, 65, 66, 67)
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68. A peritoneal magnetic resonance imaging antenna system, comprising:
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a probe shaft having a distal end and a proximal end, the distal end of the probe shaft having a hollow needle at a distalmost end sharpened for penetrating peritoneal tissue, wherein the probe shaft is tubular and comprises an open lumen extending axially through the distalmost sharpened end and the probe shaft further comprising a first conductor, wherein the first conductor defines the hollow needle; an insulator or dielectric covering the first conductor over at least the proximal portion of the probe shaft; and a second conductor covering the insulator or dielectric; wherein the first conductor, the insulator or dielectric, and the second conductor define a magnetic resonance imaging antenna. - View Dependent Claims (69, 70, 71, 72, 73, 74, 75)
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76. An intradural magnetic resonance imaging antenna system, comprising:
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a probe shaft having a distal end and a proximal end, the distal end of the probe shaft having a hollow needle at a distalmost end sharpened for penetrating dural tissue, wherein the probe shaft is tubular and comprises an open lumen extending axially through the distalmost sharpened end, and the probe shaft further comprising a first conductor, wherein the first conductor defines the hollow needle; an insulator or dielectric covering the first conductor over at least the proximal portion of the probe shaft; and a second conductor covering the insulator or dielectric; wherein the first conductor, the insulator or dielectric, and the second conductor form a magnetic resonance imaging antenna. - View Dependent Claims (77, 78, 79, 80, 81, 82, 83)
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84. An intraarticular magnetic resonance imaging antenna system, comprising:
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a probe shaft having a distal end and a proximal end, the distal end of the probe shaft having a hollow needle at a distalmost end sharpened for penetrating articular tissue, wherein the probe shaft is tubular and comprises an open lumen extending axially through the distalmost sharpened end, and the probe shaft further comprising a first conductor that defines the; an insulator or dielectric covering the first conductor over at least the proximal portion of the probe shaft; and a second conductor covering the insulator or dielectric; wherein the first conductor, the insulator or dielectric, and the second conductor define a magnetic resonance imaging antenna. - View Dependent Claims (85, 86, 87, 88, 89, 90, 91)
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92. A nasopharyngeal magnetic resonance imaging antenna system, comprising:
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a probe shaft having a distal end and a proximal end, the distal end of the probe shaft having a hollow needle at a distalmost end sharpened for penetrating nasopharyngeal tissue, wherein the probe shaft is tubular and comprises an open lumen extending axially through the distalmost sharpened end, and the probe shaft further comprising a first conductor that defines the hollow needle; an insulator or dielectric covering the first conductor over at least the proximal portion of the probe shaft; and a second conductor covering the insulator or dielectric; wherein the first conductor, the insulator or dielectric, and the second conductor define a magnetic resonance imaging antenna. - View Dependent Claims (93, 94, 95, 96, 97, 98, 99)
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100. A magnetic resonance imaging needle antenna system, comprising:
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a tubular needle probe shaft having a length with opposing distal and proximal ends, the distal end of the probe shaft having a needle defined by a sufficiently rigid hollow first conductor with a distalmost end sharpened for penetrating target tissue and with the hollow first conductor having an open longitudinally extending lumen extending through the distalmost sharpened end; an insulator or dielectric covering a major length of the first conductor at a location starting upstream of a distal end portion of the needle; and a second conductor over the insulator or dielectric; wherein the first conductor, the insulator or dielectric, and the second conductor define a magnetic resonance imaging antenna with the first conductor being a first pole and the second conductor being a second pole of a dipole loopless magnetic resonance receive antenna, and wherein the distal end portion of the needle defines an antenna whip of the antenna. - View Dependent Claims (101, 102, 103)
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Specification