METHOD FOR DETECTING AND TREATING VARIATIONS IN FLUID
First Claim
1. A diagnostic method for monitoring changes in a fluid medium in a patient'"'"'s head, the method comprising:
- positioning a transmitter at a first location on or near the patient'"'"'s head, wherein the transmitter is configured to generate and transmit a time-varying magnetic field into a fluid medium in the patient'"'"'s head responsive to a first signal;
positioning a receiver at a second location on or near the patient'"'"'s head offset from the transmitter and configured to generate a second signal responsive to a received magnetic field at the receiver;
transmitting from the transmitter a time-varying magnetic field into the fluid medium in the patient'"'"'s head in response to the first signal;
receiving at the receiver the transmitted magnetic field;
generating with the receiver the second signal responsive to the received magnetic field; and
determining, using a processing unit coupled with at least the receiver, a phase shift between the transmitted magnetic field and the received magnetic field for a plurality of frequencies of the transmitted time-varying magnetic field;
whereinat least one of the transmitter or the receiver comprises a shielded transmission line, and wherein the shielded transmission line comprises a strip line on a printed circuit board coupled between two grounded planes and has a loop shape.
1 Assignment
0 Petitions
Accused Products
Abstract
A diagnostic method for monitoring changes in a fluid medium in a patient'"'"'s head. The method includes positioning a transmitter at a first location on or near the patient'"'"'s head, the transmitter generates and transmits a time-varying magnetic field into a fluid medium in the patient'"'"'s head responsive to a first signal; positioning a receiver at a second location on or near the patient'"'"'s head offset from the transmitter, the receiver generates a second signal responsive to a received magnetic field at the receiver; transmitting a time-varying magnetic field into the fluid medium in the patient'"'"'s head in response to the first signal; receiving the transmitted magnetic field; generating the second signal responsive to the received magnetic field; and determining, a phase shift between the transmitted magnetic field and the received magnetic field for a plurality of frequencies of the transmitted time-varying magnetic field.
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Citations
51 Claims
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1. A diagnostic method for monitoring changes in a fluid medium in a patient'"'"'s head, the method comprising:
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positioning a transmitter at a first location on or near the patient'"'"'s head, wherein the transmitter is configured to generate and transmit a time-varying magnetic field into a fluid medium in the patient'"'"'s head responsive to a first signal; positioning a receiver at a second location on or near the patient'"'"'s head offset from the transmitter and configured to generate a second signal responsive to a received magnetic field at the receiver; transmitting from the transmitter a time-varying magnetic field into the fluid medium in the patient'"'"'s head in response to the first signal; receiving at the receiver the transmitted magnetic field; generating with the receiver the second signal responsive to the received magnetic field; and determining, using a processing unit coupled with at least the receiver, a phase shift between the transmitted magnetic field and the received magnetic field for a plurality of frequencies of the transmitted time-varying magnetic field;
whereinat least one of the transmitter or the receiver comprises a shielded transmission line, and wherein the shielded transmission line comprises a strip line on a printed circuit board coupled between two grounded planes and has a loop shape. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 35, 36)
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31. A diagnostic method for monitoring fluid changes in a patient, the method comprising:
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placing a headset on the patient'"'"'s head, wherein the headset comprises; a transmitter; a receiver coupled with the headset such that it is offset from the transmitter when the headset is applied to the patient'"'"'s head;
receiving, in the transmitter, a first signal from a processing unit coupled with the headset;generating and transmitting, from the transmitter, a time-varying magnetic field into the patient'"'"'s head, responsive to the first signal; receiving the magnetic field in the receiver;
generating, using the receiver, a second signal responsive to the received magnetic field at the receiver; anddetermining, using the processing unit, a phase shift between the transmitted magnetic field and the received magnetic field for a plurality of frequencies of the transmitted time-varying magnetic field;
wherein at least one of the transmitter or the receiver comprises a shielded transmission line,wherein the shielded transmission line comprises a strip line on a printed circuit board coupled between two grounded planes, and the shielded transmission line has a lowest natural resonant frequency above 200 MHz. - View Dependent Claims (32, 33, 34)
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37. A method for monitoring intracranial fluid in a patient, the method comprising:
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transmitting a first time-varying magnetic field from a transmitter toward a receiver, wherein the transmitter and the receiver are coupled to the patient'"'"'s head via a headset, the first time-varying magnetic field comprising a first plurality of frequencies that are harmonics of a first fundamental frequency, and wherein all of the first plurality of frequencies are simultaneously transmitted; receiving the first magnetic field with the receiver; and determining a phase shift between the transmitted magnetic field and the received magnetic field for each of the plurality of frequencies. - View Dependent Claims (38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51)
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Specification