Embodiments disclosed herein relate to devices and methods for monitoring one or more physiological parameters of a subject. In an embodiment, a wearable device comprises a substrate configured to attached to a subject's skin. The substrate comprises a middle portion arranged between two end portions, wherein the middle portion is more flexible than at least one of the end portions. The wearable device also comprises a physiological sensor arranged on the middle portion. The physiological sensor is configured to sense a physiological signal of the subject when the wearable device is attached to the subject's skin. And, the wearable device comprises one or more electrical components arranged on at least one of the end portions, wherein at least one of the one or more electrical components is coupled to the physiological sensor.

A device is disclosed comprising: an optical physiological sensor and a further measurement system. The optical physiological sensor comprises a light emitter and a light detector configured to detect the light from the light emitter after it has been attenuated by tissue comprising blood vessels. The optical physiological sensor is configured to determine the value of a physiological parameter from the detected light. The further measurement system is configured to determine when the value of the physiological parameter is likely to be reliable. The further measurement system comprises at least one measurement subsystem, each measurement subsystem employing a different measurement modality that is also different to a measurement modality used to determine the value of the physiological parameter.

An electroencephalography net (44) comprised of electrodes (34, 36) coupled together by a connector (28) comprising separate elastically (32) and plastically (30) deformable elements.

Systems and methods for optimizing sensor pressure in blood pressure (BP) measurements using a wearable device are provided. An example method includes recording substantially synchronously photoplethysmogram (PPG) data using a PPG sensor and pressure data using at least one pressure sensor on a wearable device, the wearable device having the PPG sensor, and wherein the at least one pressure sensor is substantially located over a user wrist radial artery while an external force gradually applies and releases pressure a plurality of times to the wearable device, wherein the external force is applied to the radial artery. The PPG data and the pressure data is monitored as the PPG data changes in response to the external force being applied and released multiple times during a period. From the recorded PPG and pressure data, a set data us formed of PPG peak values and pressure values. A curve is fitted through the data set. From the curves apex value a MAP value is determined.

A cardiac activity measurement assembly for a sports equipment handle and the handle is disclosed, wherein the assembly includes an optical cardiac activity sensor configured to measure cardiac activity of a user, and an attachment element for floatingly attaching the optical cardiac activity sensor to a handle of sports equipment in order to reduce pressure on a measuring head of the sensor caused by a skin contact between the measuring head and at least one finger or a palm of the user when gripping the handle.

A pulse wave detecting device includes: a pressure pulse wave detector which is configured to press a pressing surface in which a pressure detecting element is formed, against a radial artery under a skin of a wrist of a subject, and which is configured to detect a pressure pulse wave from the radial artery; and a housing which accommodates the pressure pulse wave detector in a state where the pressing surface is exposed toward the wrist. The housing is configured so that a compression pressure which is exerted by the housing in an attachment state where the housing is attached to the wrist, and which is applied onto the radial artery is smaller than a compression pressure which is exerted by the pressing surface in the attachment state, and which is applied onto the radial artery.

An apparatus for measuring blood pressure includes: a pulse wave measurer including a first light source configured to emit a first light, a second light source configured to emit a second light, and a photodetector configured to measure a pulse wave signal of an object based on the first light emitted by the first light source onto the object and returning from the object; a force measurer configured to measure a contact force between the object and the pulse wave measurer; and a processor configured to control emission of the second light from the second light source based on the measured contact force, and configured to estimate blood pressure of the object based on the measured pulse wave signal and the measured contact force.

An adjustable measurement device is described that may include a housing, a power supply, a processor, a communication device, an elastic coupling member, a physiological sensor, and/or a clamp. The housing may be configured to attach to a wearable band that is wearable by a subject. The housing may include a chamber within the housing. The power supply, the processor, the communication device, the elastic coupling member, and or the physiological sensor may be disposed within the chamber. The elastic coupling member may couple the physiological sensor to the housing. A force exerted by the elastic coupling member on the physiological sensor may be in a direction through an opening towards a body part of a subject. As the subject wears the wearable band and the housing is coupled to the wearable band, the physiological sensor may be adjacent to or contact the subject.

An electronic device comprises a sensor, a notifier and a controller. The sensor is urged to a test part side of an examinee and can detect pulsation at the test part. The notifier notifies information for a position of the sensor at the test part. The controller controls the notifier to notify information for a position of the sensor at the test part based on pulsation at the test part detected by the sensor.

In a method and apparatus for swallowing impairment detection, a candidate executes one or more swallowing events, and dual axis accelerometry data is acquired representative thereof. Upon feature extraction and classification, vibrational data acquired in respect of each swallowing event is classified as indicative of one of normal or possibly impaired swallowing.