Embodiments described relate to a medical device including an invasive probe such as a guidewire that, when inserted into a duct (e.g. vasculature) of an animal (e.g., a human or non-human animal, including a human or non-human mammal), may be used to aid in diagnosing and/or treating a lesion of the duct (e.g. a growth or deposit within vasculature that fully or partially blocks the vasculature). The invasive probe may have one or more impedance sensors to sense characteristics of the lesion, including by detecting one or more characteristics of tissues and/or biological materials of the lesion. There is further described a method of assembling such a medical device.

A component analyzing apparatus is provided. The component analyzing apparatus includes: an impedance measurer including: a plurality of electrodes having an electrode width that is determined based on an effective measurement depth for analyzing a component of an analyte and a gap between two electrodes among the plurality of electrodes, and an electrode controller configured to apply a first current to a first electrode and a second electrode among the plurality of electrodes and configured to measure impedance based on a voltage between a third electrode and a fourth electrode; and a processor configured to analyze the component of the analyte based on the impedance measured by the electrode controller.

A component analyzing apparatus is provided. The component analyzing apparatus includes: an impedance measurer including: a plurality of electrodes having an electrode width that is determined based on an effective measurement depth for analyzing a component of an analyte and a gap between two electrodes among the plurality of electrodes, and an electrode controller configured to apply a first current to a first electrode and a second electrode among the plurality of electrodes and configured to measure impedance based on a voltage between a third electrode and a fourth electrode; and a processor configured to analyze the component of the analyte based on the impedance measured by the electrode controller.

The Breast Sense Feeding Monitor provides real-time measurement of breastfeeding metrics including milk volume and infant suck and swallow characteristics over multiple feedings. The wearable design lends itself to versions suitable for both home and in-clinic use.

Provided herein is a non-invasive device for measuring glucose levels (i.e., concentration) in a subject, preferably a human subject. The present invention relates to a wearable device, a kit and a method thereof for measuring blood glucose concentrations/levels. The non-invasive devices of the present invention can be used as wearable devices such as a smart band, ring, bracelet, watch and the like to monitor the blood glucose levels in diabetics without discomfort and stress due to finger pricks by measuring bio-impedance data.

Provided herein is a non-invasive device for measuring glucose levels (i.e., concentration) in a subject, preferably a human subject. The present invention relates to a wearable device, a kit and a method thereof for measuring blood glucose concentrations/levels. The non-invasive devices of the present invention can be used as wearable devices such as a smart band, ring, bracelet, watch and the like to monitor the blood glucose levels in diabetics without discomfort and stress due to finger pricks by measuring bio-impedance data.

In general, regardless of using an optical method or an electrical AC resistance impedance method, non-invasive blood glucose measurement has a problem in that variations in the level of glucose contained in blood are too small to be measured as a signal, and thus measurement results are inaccurate due to noises generated during measurement and errors caused by the difficulty in consistent measurement. To solve this problem, the present invention provides a non-invasive blood glucose sensor includes: a measurement-unit body; an impedance electrode sensor provided on an inner bottom surface of the measurement-unit body; a signal-generation and measurement unit configured to measure impedance while scanning frequency by supplying multiple frequencies to the impedance electrode sensor; a blood sensor configured to measure the amount of blood flowing through a body part brought into contact with the impedance electrode sensor; and a status display LED configured to display different colors according to the amount of blood measured using the blood sensor. Owing to this configuration, the present invention has an effect of measuring an accurate blood glucose level in a non-invasive manner.

Disclosed herein is an electronic apparatus. The electronic apparatus includes an electrode sensor configured to apply a current to an object and configured to measure an impedance of the object, a frequency controller configured to adjust a frequency of the applied current, a memory storing a correlation between an impedance and a vitamin D concentration for each frequency, and a processor configured to obtain the impedance of the object corresponding to the frequency, and to calculate a vitamin D concentration of the object based on the impedance and the correlation.

Disclosed herein is an electronic apparatus. The electronic apparatus includes an electrode sensor configured to apply a current to an object and configured to measure an impedance of the object, a frequency controller configured to adjust a frequency of the applied current, a memory storing a correlation between an impedance and a vitamin D concentration for each frequency, and a processor configured to obtain the impedance of the object corresponding to the frequency, and to calculate a vitamin D concentration of the object based on the impedance and the correlation.

A system includes an electrical tomography system and a volume estimation system. The volume estimation system is configured to reconstruct an initial impedance image based at least partially on received electrical tomography data of a domain, receive prior information associated with the domain, enhance the initial impedance image based at least partially on the received prior information to generate an enhanced impedance image, and based at least partially on the enhanced initial impedance image, generate a volumetric image of a region of interest of the enhanced impedance image, wherein the volumetric image represents a plurality of values indicating a volume of a fluid.