Disclosed is a monitoring system configured for determining risk of postpartum haemorrhage to a patient. The monitoring system comprises an electrical potential sensor for collecting patient data and at least one electrode for attaching the electrical potential sensor to a body of the patient. The monitoring system also comprises a communications module for transmitting the patient data to a detection controller, wherein the detection controller is configured to determine the risk of the postpartum haemorrhage based on the patient data.

A sweating analysis device includes a wearable sensor that outputs an electrical signal derived from an amount of sweat and an electrolyte concentration in the sweat, the sweat being secreted from a skin of a wearer, a sweat amount calculation unit that calculates the amount of sweat of the wearer, an electrolyte concentration calculation unit that calculates the electrolyte concentration in the sweat of the wearer, a power supply control unit that stops the supply of power to the wearable sensor, the sweat amount calculation unit and the electrolyte concentration calculation unit when a supply-of-power stop condition is satisfied, and restarts the supply of power when the supply-of-power stop period is ended, and a stop period calculation unit that calculates a supply-of-power stop period on the basis of the electrical signal obtained by the wearable sensor.

An enzyme sensor is configured to measure a measurement target substance included in a secretion of a living body. The enzyme sensor includes a layered structure including (a) an absorber layer configured to absorb the secretion, (b) an enzyme layer containing an enzyme, and (c) an electrode part arranged in an order of the (a), the (b), and the (c). The absorber layer includes a polymeric material having a chemically bound crosslinked structure.

Wireless, lightweight, and multifunctional chemical sensors and methods for detection of biomarkers in bodily fluids are described. Systems and methods are directed to an LC (inductor-capacitor) resonance circuit configured to detect multiple biomarkers in bodily fluids of a subject through frequency modulation. The system may be comprised within a wearable device or within a medical implant, depending on the implementation. The body fluid may comprise sweat, cerebrospinal fluid, blood, saliva, tears, mucus, gastric acid, and/or urine, for example. The biomarkers may comprise Na+, K+, Ca2+, H+, Cl, glucose, urea, lactate, glutamate, serotonin, cortisol, dopamine, cytokines, and/or epinephrine, for example.

Systems and methods for a self-powered wireless wearable sensor system include a freestanding triboelectric nanogenerator (FTENG), used as a power source for a wearable sensor. The FTENG includes stator panels and corresponding slider panels with a grating pattern. Movement, such as cardiovascular exercise causes the slider panel(s) to slide across the stator panel(s) inducing a charge and powering a wearable device sufficiently to support data transmission and continuous monitoring. An integrated self-powered wireless wearable sensor system includes a microfluidic sweat sensor patch which may be connected to lower-power wireless sensor circuitry for regulating power efficiently and is powered by the FTENG.

A device for measuring electrophysiological data includes: a series of electrodes; a control circuit including a DC voltage source connected to the electrodes in order to apply, to a pair of electrodes, DC voltage pulses, and in order to connect another high-impedance electrode; and a measurement circuit for measuring the potential of the electrodes and data representative of the current passing through at least one active electrode. The device further includes at least one base incorporating the control circuit and the measurement circuit, and a housing suitable for receiving an electrode assembly which includes at least one electrode of the series in a removable manner, so as to be able to connect or disconnect the electrodes to/from the control circuit and to/from the measurement circuit.

A wearable device comprising a display dial configured to display various health parameters, a wristband assisting the device to wear on wrist, an eject-able tray comprising a micro-chip, a first spring coupled to the eject-able tray, at least one latch provided with a second spring to hold the eject-able tray within the device by compressing the first spring, and a health monitoring unit provided with multiple sensors to determine various health parameters, wherein compression of the second spring results in the latch to release the eject-able tray which in turn relaxes the compressed first spring to eject the micro-chip outside the device for collecting blood samples. The microchip comprises at least one micro-needle and an enzyme test strip for collecting and analyzing the blood samples. The health monitoring unit comprises at least three conductive sense pads which are collectively operable to provide electrocardiograph (ECG) information.

The device is an ultra-low power, non-invasive in-vivo blood analyte sensor system incorporating multiple sensors including a carbon base and/or carbon base material coated with metallic nanoparticles and/or metallic nanoparticle nanoprobes, as a modified Clark electrode sensor system, that detects hydrogen peroxide concentrations, pH, and/or glucose concentrations (and other analytes) in bodily secretions (e.g. tears, saliva, sweat). The device consists of multiple chemoreceptive sensors, a microprocessor, a signal amplifier, signal filtering, error correction algorithms, analog-to-digital converter and wireless electromagnetic data transmitter to a remote device for further processing and/or data storage (e.g. on a server, on a cloud-based storage system, etc) and/or visual representation via software. The method involves applying the nanoprobe sensor array to skin tissue and the resulting electrical impulses correlate with glucose concentration within liquids such as tears, saliva, blood, etc. The collected data is then represented visually on a computer (handheld, smart-phone, desktop, laptop, etc) via software. The device is powered by ambient electromagnetic radiation, thermoelectric and/or solar power and/or rechargeable battery. The device is placed against the skin or immersed in a sample for sensor measurement. Single and continuous data collection is possible. The device can be reused repeatedly, re-sterilized and it is a high accuracy, low-cost option for multiple use glucose concentration measurements. The device can monitor blood glucose for Type I and Type II diabetics and it is suitable for a wide range of applications including gases, liquids and solids, biological, organic and inorganic chemical analysis.

An occupant support adapted for use in a vehicle includes a sensory system and a control system. The sensor system is configured to generate signals indicative of at least one of a physiological characteristic of the occupant.

Methods of forming garments having one or more stretchable conductive ink patterns. Described herein are method of making garments (including compression garments) having one or more highly stretchable conductive ink pattern formed of a composite of an insulative adhesive, a conductive ink, and an intermediate gradient zone between the adhesive and conductive ink. The conductive ink typically includes between about 40-60% conductive particles, between about 30-50% binder; between about 3-7% solvent; and between about 3-7% thickener. The stretchable conductive ink patterns may be stretched more than twice their length without breaking or rupturing.