System for spatially adjustable excitation of leadless miniature marker
First Claim
1. A system for generating a spatially adjustable excitation field, comprising:
- a source generator that generates a plurality of alternating electrical signals each having an independently adjustable phase; and
a plurality of excitation coils being configured to simultaneously receive the alternating electrical signals at a selected phase to generate magnetic fields, wherein the magnetic fields combine to form a spatially adjustable excitation field for excitation of a leadless resonating marker assembly within the spatially adjustable excitation field.
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Accused Products
Abstract
A system for generating a magnetic field for excitation of a leadless marker assembly. The system of at least one embodiment includes a source generator that generates a plurality of alternating electrical signals each having an independently adjustable phase. A plurality of excitation coils are configured to simultaneously receive a respective one of the alternating electrical signals at a selected phase to generate a magnetic field. The phase of the alternating electrical signal for each excitation coil is independently adjustable relative to the phase of the alternating electrical signal for the other excitation coils so as to adjust the magnetic field from the respective coil. The magnetic fields from the excitation coils combine to form a spatially adjustable excitation field for excitation of the remote leadless marker assembly.
169 Citations
31 Claims
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1. A system for generating a spatially adjustable excitation field, comprising:
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a source generator that generates a plurality of alternating electrical signals each having an independently adjustable phase; and a plurality of excitation coils being configured to simultaneously receive the alternating electrical signals at a selected phase to generate magnetic fields, wherein the magnetic fields combine to form a spatially adjustable excitation field for excitation of a leadless resonating marker assembly within the spatially adjustable excitation field. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of exciting a leadless marker assembly, comprising:
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directing alternating electrical signals that have independently adjustable phase through a plurality of excitation coils; generating a plurality of magnetic fields from the plurality of excitation coils; combining the magnetic fields to form a spatially adjustable excitation field; and energizing a leadless resonating marker assembly within the spatially adjustable excitation field. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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18. A system for generating a pulsed excitation field for excitation of a lead less marker assembly, comprising:
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a high voltage capacitor; a source coil having a programmable frequency configured to deliver a pulsed magnetic excitation signal to the leadless marker assembly; and a switching network coupled to the high voltage capacitor and the source coil, wherein the switching network is configured to redirect a continuous flow of energy from the high voltage capacitor to the source coil and from the source coil back to the high voltage capacitor. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31)
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Specification