A system can include one or more electrodes; a sensor structure configured to position electrodes over a surface of a body that includes an artery. A capacitance sensing circuit can be coupled to the electrodes and configured to acquire capacitance values of the electrodes over a predetermined time period. The capacitance values can correspond to a distance between the body surface and the at least one electrode. Processor circuits can be configured to generate APW data from the capacitance values. Corresponding methods and devices are also disclosed.

A method can include attaching a sensor device contained in a sensor structure to a body; sensing motion of the body with at least one motion capacitive sensor of the sensor device that senses a capacitance change resulting from a difference in orientation of the motion capacitive sensor and a surface of the body. If motion of the body is not sensed with the motion capacitive sensor, sensor readings can be acquired with a biophysical sensor that emits signals into a portion of the body below the sensor structure, and generate data for a feature of the body with the sensor readings. If motion of the body is not sensed with the motion capacitive sensor, data for the feature of the body is not generated. Related devices and systems are also disclosed.

A pressure compensating non-invasive blood-component measuring device has electrically insulated parallel electrodes mounted on a dielectric membrane (106). A main circuit board (201) provides electrical connections to the electrodes and has an orifice (402) to allow flexing. A housing supports the main circuit board, with a second orifice to facilitate the application of a finger onto the insulated electrodes. A bottom circuit board (401) supports a force sensor (408) and fixing elements (313, 314) secure the bottom circuit board to the top circuit board, such that the bottom circuit board does not contact the housing directly. An intermediate board (316) is guided but not restrained by the fixing elements, and is arranged to apply force onto said force sensor.

A smart object may be used to monitor physiological parameters of a user. The object has at least one capacitive sensor to sense a change in capacitance when a tissue of the user comes into contact with the at least one capacitive sensor. The change in capacitance can be used to detect physiological parameters of a user such as heart rate, inter-beat interval and respiratory rate. The smart object may also be used with another smart object to determine the identity of the user or other physiological parameters of the user such as blood pressure.

Provided is a sensor module according to the present disclosure including a base portion, a first pressure sensor portion and a second pressure sensor portion coupled to the base portion and arranged adjacent to each other, and a hard structure layer coupled to an upper portion of the first pressure sensor portion. A step difference of a first distance is formed between an upper portion of the hard structure layer and the upper portion of the second pressure sensor portion.

A biosensor includes an electrode configured to be attached to a living body; a memory configured to store the biological information; and a processing circuit configured to operate either in an operation checking mode and a biological information recording mode. The processing circuit, during the operation checking mode, wirelessly transmits the obtained biological information, and transitions to the biological information recording mode upon receiving a recording start command from an outside, and during the biological information recording mode, writes the obtained biological information to the memory.

A system for monitoring medical conditions including pressure ulcers, pressure-induced ischemia and related medical conditions comprises at least one sensor adapted to detect one or more patient characteristic including at least position, orientation, temperature, acceleration, moisture, resistance, stress, heart rate, respiration rate, and blood oxygenation, a host for processing the data received from the sensors together with historical patient data to develop an assessment of patient condition and suggested course of treatment, including either suspending or adjusting turn schedule based on various types of patient movement. Compliance with Head-of-Bed protocols can also be performed based on actual patient position instead of being inferred from bed elevation angle. The sensor can include bi-axial or tri-axial accelerometers, as well as resistive, inductive, capacitive, magnetic and other sensing devices, depending on whether the sensor is located on the patient or the support surface, and for what purpose.

A smart object may be used to monitor the hydration level of a person. The object has at least two impedance sensors that can be used to sense the complex impedance of a person when a tissue of the user comes into contact with the impedance sensors. The measured impedance can then be used to determine the hydration level of the person. In addition to using the impedance sensors to determine the hydration level of the person, the impedance sensors can also be used to capture an electrocardiogram for the person. The smart object may also be used with another smart object to determine the identity of the user or other physiological parameters of the user such as blood pressure.

A mobile newborn care bed is configured to be positioned at a delivery location of an infant includes a bassinet containing a mattress for receiving the infant and a frame that supports the bassinet. At least two capacitive sensors are incorporated in the mattress that record cardiac signals, and an on-bed computing system is configured to receive the cardiac signals and determine a heart rate for the infant. A battery supported by the frame powers the on-bed computing system, and a digital display is communicatively connected to the on-bed computing system and displays the heart rate.

Systems for detecting contact between an electrode and a patient's skin using one or more contact detection schemes are provided. An example system can include an electrode assembly comprising at least one electrode configured to be disposed substantially proximate to the patient's skin and configured to at least one of sense an ECG signal of the patient and provide one or more therapeutic pulses to the patient, one or more sensors disposed on the electrode assembly and isolated from the electrode, the sensors configured to measure one or more properties to determine contact between the electrode and the patient's skin, and a controller configured to receive data representing the measured one or more properties and determine, based at least in part on the received data, whether the electrode is in contact with the patient's skin. The sensors can include temperature, impedance, capacitance, optical, and other similar sensors.