Resonator with adjustable capacitance for medical device
First Claim
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1. A resonator system for detecting a deliverable device in a body, comprising:
- a resonator device with an LC resonator circuit, including;
an inductor coila plurality of individually switched parallel capacitors in series with the inductor coil;
a varactor in parallel with the plurality of individually switched parallel capacitors;
a processor coupled to the plurality of individually switched parallel capacitors;
a magnetic flux sensor coupled to the processor, where the magnetic flux sensor can sense a flux of a magnetic field and transmit a signal that represents the flux to the processor that changes the capacitance of the LC resonator circuit by switching a number of the plurality of individually switched parallel capacitors based on the signal;
a power source electrically connected to the processor; and
a deliverable device, positioned with the resonator device, so that at least a portion of the inductor coil surrounds a space that is surrounded by at least a portion of the deliverable device.
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Abstract
Systems and methods for a resonator with an adjustable capacitance for a medical device. In one embodiment, a resonator system includes a resonator device with an LC resonator circuit that has an adjustable capacitance, an inductor coil in series with the adjustable capacitance, and an adjustable capacitance control that can control the adjustable capacitance to obtain different particular capacitance values. This embodiment also includes a medical device, positioned with the resonator device, so that at least a portion of the inductor coil surrounds a space that is surrounded by at least a portion of the medical device.
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Citations
21 Claims
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1. A resonator system for detecting a deliverable device in a body, comprising:
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a resonator device with an LC resonator circuit, including; an inductor coil a plurality of individually switched parallel capacitors in series with the inductor coil; a varactor in parallel with the plurality of individually switched parallel capacitors; a processor coupled to the plurality of individually switched parallel capacitors; a magnetic flux sensor coupled to the processor, where the magnetic flux sensor can sense a flux of a magnetic field and transmit a signal that represents the flux to the processor that changes the capacitance of the LC resonator circuit by switching a number of the plurality of individually switched parallel capacitors based on the signal; a power source electrically connected to the processor; and a deliverable device, positioned with the resonator device, so that at least a portion of the inductor coil surrounds a space that is surrounded by at least a portion of the deliverable device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A resonator system, comprising:
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a resonator circuit that includes an inductor coil in series with a plurality of individually switched parallel capacitors; a varactor that is; parallel to the plurality of individually switched parallel capacitors; and connectable to the resonator circuit a processor coupled to the resonator circuit, a power source electrically connected to the processor; a magnetic flux sensor coupled to the processor, where the magnetic flux sensor can sense a flux from a magnetic field and transmit a signal based on the flux to the processor that automatically adjusts the capacitance to a resonant capacitance by switching a number of the plurality of individually switched parallel capacitors; and an implantable medical device, wherein at least a portion of the implantable medical device is surrounded by the inductor coil. - View Dependent Claims (10, 11, 12, 13, 14)
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15. A method comprising:
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providing a resonator circuit with; an inductor coil in series with a plurality of individually switched parallel capacitors; a processor which is coupled to the resonator circuit to change a capacitance of the resonator circuit; a power source connected to the processor; and a magnetic flux sensor coupled to the processor, where the magnetic flux sensor can sense a flux of a magnetic field and transmit a signal that represents the flux to the processor that changes the capacitance of the LC resonator circuit by switching a number of the plurality of individually switched parallel capacitors based on the signal, to a deliverable device, deliverable in a lumen of a body, so that at least a portion of the inductor coil surrounds at least a portion of the deliverable device; determining a resonant capacitance at which the resonator circuit will resonate in a particular magnetic field by; sensing a flux of the particular magnetic field; and calculating the resonant capacitance of the resonator circuit, based on the sensed flux and a known inductance of the resonator circuit; and adjusting the capacitance of the resonator circuit to the resonant capacitance in the lumen.
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16. A method comprising:
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fabricating a resonator device that includes; a resonator circuit with an inductor coil in series with a plurality of individually switched parallel capacitors; a varactor that is; parallel to the plurality of individually switched parallel capacitors; and connectable to the resonator circuit; a processor that can automatically adjust a capacitance to a resonant capacitance in response to magnetic fields of different strength; a power source connected to the processor; a magnetic flux sensor coupled to the processor, where the magnetic flux sensor can sense a flux of a magnetic field and transmit a signal that represents the flux to the processor that changes the capacitance of the LC resonator circuit by switching a number of the plurality of individually switched parallel capacitors based on the signal; and connecting the resonator device to a medical device so that at least a portion of the inductor coil surrounds at least a portion of the medical device. - View Dependent Claims (17, 18, 19, 20, 21)
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Specification