The present disclosure provides a sensor assembly for non-invasive temperature measurement using microwave radiometry. The assembly comprises a circuit board with a thermistor, capacitor, and inductor, where the inductor electrically isolates microwave signals from temperature sensing signals. A coaxial connector is positioned at one end of the circuit board with an antenna aperture at the opposite end. A shield layer extends over the circuit board with a sensor region, transition region, and extended region that are offset from the circuit board components. The shield layer is oriented at an angle relative to the circuit board. The inductor utilizes parasitic capacitance to improve antenna impedance matching, while the capacitor provides microwave signal isolation for the thermistor to prevent interference with signal detection.
G01K 13/20 - Thermomètres médicaux par contact pour les humains ou les animaux
G01K 1/143 - SupportsDispositifs de fixationDispositions pour le montage de thermomètres en des endroits particuliers pour la mesure de la température de surfaces
G01K 3/14 - Thermomètres donnant une indication autre que la valeur instantanée de la température fournissant des différences de valeursThermomètres donnant une indication autre que la valeur instantanée de la température fournissant des valeurs différenciées par rapport à l'espace
G01K 7/24 - Mesure de la température basée sur l'utilisation d'éléments électriques ou magnétiques directement sensibles à la chaleur utilisant des éléments résistifs l'élément étant une résistance non linéaire, p. ex. une thermistance dans un circuit spécialement adapté, p. ex. un circuit en pont
G01K 11/00 - Mesure de la température basée sur les variations physiques ou chimiques, n'entrant pas dans les groupes , , ou
2.
Apparatus and method of non-invasively determining deep tissue temperature using microwave radiometry
An apparatus for measuring a target tissue temperature is provided. The sensor antenna may include an outside and a contact side. A sensor antenna measurement aperture may be disposed on the contact side. The sensor antenna measurement aperture may be configured to generate a first signal. A skin temperature sensor may be disposed on the contact side and configured to generate a second signal. A radiometer may be configured to receive the first signal and the second signal.
An apparatus for measuring a target tissue temperature is provided. The sensor antenna may include an outside and a contact side. A sensor antenna measurement aperture may be disposed on the contact side. The sensor antenna measurement aperture may be configured to generate a first signal. A skin temperature sensor may be disposed on the contact side and configured to generate a second signal. A radiometer may be configured to receive the first signal and the second signal.
A61B 5/00 - Mesure servant à établir un diagnostic Identification des individus
A61B 5/01 - Mesure de la température de parties du corps
A61B 5/055 - Détection, mesure ou enregistrement pour établir un diagnostic au moyen de courants électriques ou de champs magnétiquesMesure utilisant des micro-ondes ou des ondes radio faisant intervenir la résonance magnétique nucléaire [RMN] ou électronique [RME], p. ex. formation d'images par résonance magnétique
A61B 5/145 - Mesure des caractéristiques du sang in vivo, p. ex. de la concentration des gaz dans le sang ou de la valeur du pH du sang
G01J 5/00 - Pyrométrie des radiations, p. ex. thermométrie infrarouge ou optique
G01K 1/16 - Dispositions particulières pour conduire la chaleur de l'objet à l'élément sensible
4.
APPARATUS AND METHOD OF NON-INVASIVELY DETERMINING DEEP TISSUE TEMPERATURE USING MICROWAVE RADIOMETRY
An apparatus for measuring a target tissue temperature is provided. The sensor antenna may include an outside and a contact side. A sensor antenna measurement aperture may be disposed on the contact side. The sensor antenna measurement aperture may be configured to generate a first signal. A skin temperature sensor may be disposed on the contact side and configured to generate a second signal. A radiometer may be configured to receive the first signal and the second signal.
A61B 5/01 - Mesure de la température de parties du corps
A61B 5/0507 - Détection, mesure ou enregistrement pour établir un diagnostic au moyen de courants électriques ou de champs magnétiquesMesure utilisant des micro-ondes ou des ondes radio utilisant des micro-ondes ou des ondes térahertz
A61B 5/00 - Mesure servant à établir un diagnostic Identification des individus
G01K 11/00 - Mesure de la température basée sur les variations physiques ou chimiques, n'entrant pas dans les groupes , , ou
5.
Apparatuses for non-invasively sensing internal temperature
A transducer for noninvasively determining an internal temperature of a location of interest in a body of a subject is provided. The transducer receives a native temperature signals originating from the location of interest without substantially receiving interfering signals, and includes one or more shielding features for preventing interference. In addition, such a transducer may include a dielectric cavity configured or positioned to increase the native temperature signals sensed, or received, by the antenna. A transducer may be configured to multiplex signals indicative of a temperature of a location of interest within the body of a subject and reference temperature signals. Such a transducer may include a connector that facilitates the communication of a multiplexed signal, such as a connector for a coaxial cable. The connector of a transducer may be configured to swivel relative to an end of a cable.
G01K 1/02 - Moyens d’indication ou d’enregistrement spécialement adaptés aux thermomètres
G01K 7/24 - Mesure de la température basée sur l'utilisation d'éléments électriques ou magnétiques directement sensibles à la chaleur utilisant des éléments résistifs l'élément étant une résistance non linéaire, p. ex. une thermistance dans un circuit spécialement adapté, p. ex. un circuit en pont
G01K 13/00 - Thermomètres spécialement adaptés à des fins spécifiques
A61B 5/01 - Mesure de la température de parties du corps
6.
Error reduction in radiation-based temperature measurement systems
Apparatuses and systems for determining a temperature of a targeted subject are disclosed. A temperature sensing system may include an antenna for sensing electromagnetic radiation (e.g., microwaves, etc.) emanating from the source. Based on that electromagnetic radiation, the antenna generates a temperature signal. A switch, which is located at or adjacent to an output of the antenna, receives the temperature signal, as well as a reference signal from a termination. The temperature signal and the reference signal are conveyed along a cable to a signal converter. Signal-altering events that affect the temperature signal as it is conveyed also affect the reference signal. Thus, any error caused by a signal-altering event automatically cancels out. The signal converter measures or otherwise processes the temperature signal and, since there is no need to correct for errors in the temperature signal, the reference signal, and accurately calculates the temperature of the source.
Apparatuses and systems for determining a temperature of a targeted subject are disclosed. A temperature sensing system may include an antenna for sensing electromagnetic radiation (e.g., microwaves, etc.) emanating from the source. Based on that electromagnetic radiation, the antenna generates a temperature signal. A switch, which is located at or adjacent to an output of the antenna, receives the temperature signal, as well as a reference signal from a termination. The temperature signal and the reference signal are conveyed along a cable to a signal converter. Signal-altering events that affect the temperature signal as it is conveyed also affect the reference signal. Thus, any error caused by a signal-altering event automatically cancels out. The signal converter measures or otherwise processes the temperature signal and, since there is no need to correct for errors in the temperature signal, the reference signal, and accurately calculates the temperature of the source.
G01S 3/02 - Radiogoniomètres pour déterminer la direction d'où proviennent des ondes infrasonores, sonores, ultrasonores ou électromagnétiques ou des émissions de particules sans caractéristiques de direction utilisant des ondes radio
G01K 7/30 - Mesure de la température basée sur l'utilisation d'éléments électriques ou magnétiques directement sensibles à la chaleur utilisant le bruit thermique de résistance ou de conducteurs
8.
Apparatuses for non-invasively sensing internal temperature
A transducer for noninvasively determining an internal temperature of a location of interest in a body of a subject may be configured to receive native temperature signals originating from the location of interest without substantially receiving interfering signals. Such a transducer may include one or more shielding features for preventing interference. In addition, such a transducer may include a dielectric cavity configured or positioned to increase the native temperature signals sensed, or received, by the antenna. A transducer may be configured to multiplex signals that are indicative of a temperature of a location of interest within the body of a subject and reference temperature signals. Such a transducer may include a connector that facilitates the communication of a multiplexed signal, such as a connector for a coaxial cable. The connector of a transducer may be configured to swivel relative to an end of a cable that has been coupled thereto. Systems including such a transducer are also disclosed.
G01K 11/00 - Mesure de la température basée sur les variations physiques ou chimiques, n'entrant pas dans les groupes , , ou
A61B 5/00 - Mesure servant à établir un diagnostic Identification des individus
A61B 5/05 - Détection, mesure ou enregistrement pour établir un diagnostic au moyen de courants électriques ou de champs magnétiquesMesure utilisant des micro-ondes ou des ondes radio
A61B 5/01 - Mesure de la température de parties du corps
9.
APPARATUSES FOR NON-INVASIVELY SENSING INTERNAL TEMPERATURE
A transducer for noninvasively determining an internal temperature of a location of interest in a body of a subject may be configured to receive native temperature signals originating from the location of interest without substantially receiving interfering signals. Such a transducer may include one or more shielding features for preventing interference. In addition, such a transducer may include, a dielectric cavity configured or positioned to increase the native temperature signals sensed, or received, by the antenna, and/or it may be configured to multiplex signals indicative of a temperature within a subject's body with reference temperature signals.
A system for and noninvasively monitoring temperature within a body of a subject includes a transducer and an interface component. The transducer receives native temperature signals, which are electromagnetic signals. One or both of the transducer and the interface component convert the native temperature signals to a standard temperature signal. The interface unit may be configured to be coupled to a standard temperature signal-receiving apparatus, such as a standard vital signs monitor or a standard body temperature management system, which may recognize the standard temperature signal. Methods for noninvasively monitoring temperature, including receiving native temperature signals and converting the native temperature signals to a standard temperature signal, are also disclosed.
brevets
