Resonator with adjustable capacitor for medical device
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United States of America Patent
Stats
-
Dec 4, 2007
Grant Date -
Mar 22, 2007
app pub date -
Aug 23, 2005
filing date -
Aug 23, 2005
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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