Abstract: A wearable device for sensing vital signs includes a housing defining an interior cavity. An optical unit is positioned inside the interior cavity. The optical unit includes one or more light emitters that emit optical signals, at least one polarizer orientated to block optical signals having a predetermined polarity direction, and one or more light sensors that receive optical signals that pass through the at least one polarizer. An acoustic unit is positioned inside the interior cavity, and has a microphone to receive acoustic signals that enter into the interior cavity. The acoustic signals are used to non-invasively estimate blood pressure.

Abstract: Systems and methods are described, and one method includes determining a fetal blood oxygenation level, including: activating at least one light source with at least two distinct wavelengths of light on an abdomen of a pregnant mammal to direct light into a maternal abdomen toward a fetus; receiving a set of mixed signals from a set of photodetectors positioned at different locations on the maternal abdomen from reflected light that traverses maternal tissue or maternal tissue and fetal tissue; determining the fetal blood oxygenation level by performing computations on a composite fetal signal produced from the mixed signals; and ensuring a skin temperature of the maternal abdomen does not rise to unsafe levels due to activating the at least one light source.

Abstract: Embodiments of the present disclosure relate to implantable medical devices (IMDs). In an exemplary embodiment, an IMD comprises: a housing including a plurality of feedthroughs extending through the housing, a first electrode, a second electrode, and a biocompatible circuit board disposed around an outer surface of the housing. The biocompatible circuit board comprising a plurality of traces, wherein a first trace of the plurality of traces is coupled to the first electrode and a first feedthrough of the plurality of feedthroughs, and a second trace of the plurality of traces is coupled to the first electrode and a second feedthrough of the plurality of feedthroughs.

Abstract: A harness comprising a patient module connector, an extremity hub; a cable branch including a plurality of channel pairs. The cable branch includes a first end coupled to the patient module connector and a second end coupled to the extremity hub. The harness comprises a monitoring cable configured to attach and detach from the extremity hub.

Abstract: A sensing system comprises a photonics integrated circuit partially encapsulated by an encapsulation material and the photonics integrated circuit comprising a first integrated sensor accessible to a target analyte and being positioned in a part of the photonics integrated circuit not being encapsulated by an encapsulation material, and a second integrated sensor accessible to a reference substance and being positioned in a part of the photonics integrated circuit that is encapsulated by an encapsulation material. The sensing system is further adapted to, when in use, comprise the reference substance but less or no target analyte between the second integrated sensor and the encapsulation material as compared to the amount of target analyte being present at the first integrated sensor.

Abstract: A patient monitoring sensor having a communication interface, through which the patient monitoring sensor can communicate with a monitor is provided. The patient monitoring sensor includes a light-emitting diode (LED) communicatively coupled to the communication interface and a detector, communicatively coupled to the communication interface, capable of detecting light. The patient monitoring sensor includes a cable to flexible printed circuit board (PCB) connection that provides a reliable connection resistant to flex forces, water ingress and pull forces.

Abstract: The present disclosure generally relates to the field of blood glucose monitoring. A device for determining a blood glucose level includes a first light emitting unit configured to emit a first light; a second light emitting unit configured to emit a second light, wherein one of the first light and the second light is configured to be insensitive to glucose content in blood; a first light receiving unit configured to generate a first signal based on the first light; and a second light receiving unit configured to generate a second signal based on the second light.

Abstract: A probe tip of an oximeter device includes first and second printed circuit boards (PCBs) that are coupled to the ends of optical fibers that transmit light between the PCBs and into patient tissue that is to be measured by the oximeter device. The PCBs are oriented at an angle between zero and ninety degrees so that the fibers have a curved shape between the locations at which the fibers are coupled to the first and second PCBs. The angular orientation of the PCBs and curved shape of the fibers allows the fibers to have a longer length than if the fibers were straight and allows for light transmitted through the fibers to have a uniform distribution across a cross-section of the fibers as the light is emitted from the fibers into patient tissue. The uniform distribution of light transmitted into patient tissue allows for reliable oximetry measurements.

Abstract: This disclosure relates to selection of optimum channel in twin radars for efficient detection of cardiopulmonary signal rates. State-of-the-art solutions involve use of IQ (In-phase and Quadrature) channel radar which need continuous calibration. Distance of the radar from a subject being monitored affects performance. The present disclosure enables enhanced cardiopulmonary signal rate monitoring using a time domain approach, wherein only the data from signal reflected off the radar is considered. The solution is also time window adaptive. Signal property and radar physics-based methods have been implemented for selecting an optimum channel in twin radars thereby enhancing detection of respiration rate and breath rate.

Abstract: A pulse oximeter sensor with earhook assembly for placement along the outside of a person's ear supported by the ear flap and ear lobe into which is placed a sensors for receiving and transmitting human body's analytics such as pulse or blood oxygen saturation.

Abstract: An electronic device is provided. The electronic device includes a housing including a first surface facing a first direction, a second surface facing a second direction opposite to the first surface, and a third surface connecting the first surface and the second surface to form a space in the housing, a display viewable in the first direction through the first surface of the housing, a printed circuit board (PCB) disposed in the space, a glass covering at least a part of the second surface of the housing and including a fourth surface facing the first direction and a fifth surface facing the second direction, a high-hardness member disposed on the fifth surface, a first conductive member disposed between the high-hardness member and the glass, and a second conductive member disposed on the fourth surface and electrically connected to the PCB.

Abstract: This document describes techniques and devices for Fourier-transform infrared (FT-IR) spectroscopy using a mobile device. A mobile device (502) includes a light source (504) that emits light toward an interferometer (508) that uses mirrors to separate and recombine the light. The interferometer directs the recombined light toward a person. Light reflected from, or transmitted through, the person is received through a reception port (506) to a photodetector (510) that outputs photodetector data that corresponds to a measured light intensity of the reflected and transmitted light as a function of a path length of the light or a mirror position of the interferometer. Based on the photodetector data, an interferogram is generated. Applying a technique such as a Fourier transform to the interferogram, a spectrum data set of the reflected and transmitted light is generated. Based on the spectrum data set, a concentration of solutes in the person's blood is calculated.

Abstract: Systems and methods for acquiring photoplethysmographic (PPG) signals for measuring blood pressure can include a computing device acquiring a sequence of images representing transdermal optical data of a subject, and generating a corresponding sequence of downsampled color frames. The computing device can identify, in each downsampled color frame, a respective central image block representing a central image region of the downsampled color frame and having a first size smaller than a second size of the downsampled color frame. The computing device can generate, for each downsampled color frame, a corresponding color intensity value based on the respective central image block. The computing device can generate, using color intensity values corresponding to the sequence of downsampled color frames, a PPG signal to determine a blood pressure value of the subject.

Abstract: A device comprising a piece of planar substrate embedded with two sensors and two emitters. The substrate has a generally planar surface for application onto the wearer's body part. The emitters and sensors are shown to be arranged in such a way that no subset of any two emitters and one sensor, or subset of any two emitters and one sensor, forms a straight line, which prevents the two sensors from detecting the same noise caused by the same wearer movements.

Abstract: An ingestible electronic capsule for the collection of samples along a gastric intestinal tract and methods relating thereto are provided. The ingestible electronic capsule includes a housing and a cap that form an interior chamber. The cap includes a sampling port and one or more sample collection chambers are disposed within the interior chamber. A motor is also disposed within the interior chamber and is configured to rotate one of the cap and the one or more sample collection chambers so to align one or the one or more sample collection chambers and the sampling port of the cap so to allow for sample collection. A microcontroller is also disposed within the interior chamber and is in communication with at least the motor. The microcontroller is configured to control the selective alignment of the sampling port and one of the one or more sample collection chambers and induce gastric intestinal fluid sampling.

Abstract: A tissue profile wellness monitor measures a physiological parameter, generates a tissue profile, defines limits and indicates when the tissue profile exceeds the defined limits. The physiological parameter is responsive to multiple wavelengths of optical radiation after attenuation by constituents of pulsatile blood flowing within a tissue site. The tissue profile is responsive to the physiological parameter. The limits are defined for at least a portion of the tissue profile.

Abstract: An in-ear hearing device includes a light source configured to emit light, a photodetector configured to detect the emitted light after the emitted light passes through tissue of a subject, a spout; an audio receiver configured to deliver a sound to the subject through the spout, and a dome configured to conform to a shape of a subject's ear canal when the hearing device is in the ear canal. An output of the light source and an input of the photodetector are separated by the dome, and the dome absorbs and/or reflects at least part of the emitted light. The photodetector may be a forward biased photodiode. The sensor device can be realized with power levels, circuitry components, and in package sizes, of hearing devices.

Abstract: Apparatus and methods provide wireless, disposable, continuous pulse oximeter sensor technology, useful and beneficial for a number of applications including relatively extended periods of data collection, and/or packaged in compact and easy-to-use assemblies. Economic fabrication and use provides flexible methodologies that can reduce the overall costs of monitoring and collecting patient's physiological data, and provide relatively greater ease and comfort to the patient. A disposable wireless continuous pulse oximeter sensor has a reduced emitter-detector separation, a low-power frontend, and a low-cost processor that sends waveforms to a host device so that the host can calculate and display the parameters of interest. Complications created by the reduced distance between emitter and detector are minimized by using an emitter-detector assembly with an optically dark background, and a bandage for improved optical compliance.

Abstract: The invention comprises a method and apparatus for sampling a common tissue volume and/or a common skin layer skin of a person as a part of noninvasive analyte property determination system, comprising the steps of: providing an analyzer, comprising at least three detectors at least partially embedded in a probe housing, the probe housing comprising a sample side surface, the detectors including a first and second range of detection zones of differing radial distances from a first illumination zone and second illumination zone, respectively coupled to separate sources; repetitively illuminating the illumination zones of the skin with photons in a range of 1200 to 2500 nm; and detecting portions of light from the sources with the at least three detectors, the detectors positioned on a common line with the sources.

Abstract: An apparatus includes a magnetic-field transducer, and circuitry. The magnetic-field transducer is configured to be coupled externally to a body of a patient. The circuitry is configured to generate and apply to the magnetic-field transducer a time-varying signal, so as to generate a time-varying magnetic field outside the body of the patient, for supplying electrical energy by inductive coupling to an electronic device that is positioned inside the body, to estimate an intensity of the magnetic field that reaches the electronic device, and to assess fluid retention in an organ of the patient based on the estimated intensity of the magnetic field.