Hypertension system and method
First Claim
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1. A system comprising:
- an implantable sensor assembly configured to resonate at a frequency corresponding to a physiological blood pressure of a patient, the sensor assembly comprising a unitary hermetic housing that encloses a variable capacitor and an inductor within an interior chamber of the housing, wherein the variable capacitor and inductor is configured to emit a return signal when subjected to a burst of RF energy;
an external electronics assembly further comprising;
a frequency source configured to transmit a transmission signal;
a transmit coil coupled to the frequency source;
a bounce back circuit coupled to the frequency source and the transmit coil, anda directional coupler coupled to the transmit coil and having first and second outputs, wherein the directional coupler is configured to isolate the transmission signal from the return signal.
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Abstract
Disclosed are hypertension systems and related methods that include a blood pressure sensor located or implanted under the skin of a patient, and electronics, which may have the size and shape of a wrist watch, for example, that monitors the blood pressure of the patient by communicating with the implanted sensor.
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Citations
20 Claims
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1. A system comprising:
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an implantable sensor assembly configured to resonate at a frequency corresponding to a physiological blood pressure of a patient, the sensor assembly comprising a unitary hermetic housing that encloses a variable capacitor and an inductor within an interior chamber of the housing, wherein the variable capacitor and inductor is configured to emit a return signal when subjected to a burst of RF energy; an external electronics assembly further comprising; a frequency source configured to transmit a transmission signal; a transmit coil coupled to the frequency source; a bounce back circuit coupled to the frequency source and the transmit coil, and a directional coupler coupled to the transmit coil and having first and second outputs, wherein the directional coupler is configured to isolate the transmission signal from the return signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification