Resonator with adjustable capacitor for medical device
First Claim
1. A resonator device, comprising:
- an inductor coil;
a conductive member that extends from the inductor coil;
a sleeve that includes surfaces defining a first socket and a second socket, a dielectric material between the first and second sockets and a portion of the induction coil within the first socket and a portion of the conductive member within the second socket to form a capacitor structure.
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Accused Products
Abstract
An apparatus, system and method of a resonator device with an adjustable capacitor for allowing the resonance frequency (F) of the resonator device to continue to be matched to the Larmor frequency of the MRI system. The resonator device includes an inductor coil, a conductive member, a sleeve having first and second sockets that receive at least portions of the inductor coil and the conductive member as electrodes to provide a capacitor structure. Dielectric material can be positioned between at least the first and second sockets, where changes in the cross sectional area defined by the induction coil cause changes in the capacitance value (C) as one or more of the electrodes move within the socket. Changes in the inductance and the capacitance values allow for the resonance frequency (F) of the resonator device to continue to be matched to the Larmor frequency of the MRI system.
106 Citations
20 Claims
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1. A resonator device, comprising:
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an inductor coil;
a conductive member that extends from the inductor coil;
a sleeve that includes surfaces defining a first socket and a second socket, a dielectric material between the first and second sockets and a portion of the induction coil within the first socket and a portion of the conductive member within the second socket to form a capacitor structure. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A resonator device, comprising:
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an inductor coil that includes a first end;
a conductive member that extends from the inductor coil, the conductive member positioned adjacent the inductor coil and includes a second end; and
a sleeve of dielectric material that includes surfaces defining a first socket and a second socket, where the first end of the inductor coil passes into the first socket and the second end of the conductor member passes into the second socket adjacent the first end to form a capacitor structure. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15)
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16. A method of maintaining a resonance frequency of a resonator device, comprising:
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changing a circumference of an inductor coil of the resonator device to change an inductance (L) of the resonator device; and
proportionally changing a capacitance (C) of a capacitor of the resonator device as the circumference of the induction coil changes to maintain the resonance frequency of the resonator device. - View Dependent Claims (17, 18, 19, 20)
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Specification