Abstract: Methods, systems, computer-readable media, and apparatuses for determining a sedentary state of a user are disclosed. The apparatuses can be fastened to the user and include sensors configured to detect movement of the user. The apparatuses can also include a circuit coupled to the sensors. The circuits may be configured to determine, using the sensors, whether the user is sedentary; and in response to determining that the user is sedentary, determine one or more physiological attributes of the user of the device.

Abstract: Various embodiments enable calibrating a non-invasive blood pressure measurement device by determining multiple parameters defining a stress-strain relationship of an artery of a patient. The device may obtain output signals from a blood pressure sensor at two or more measurement elevations. The obtained measurement signals may be filtered into AC and quasi-DC components, and results fit to exponential functions to calculate an arterial time constant and a veinous time constant related to vein draining/filling rates. The arterial and veinous time constants may be used to calculate an infinity ratio. The infinity ratio and the obtained sensor output may be used to calculate values for multiple parameters defining a stress-strain relationship of a measured artery. Once defined, this stress-strain relationship may be stored and applied to future sensor output signals (e.g., blood pressure measuring sessions) to infer patient blood pressure.

Abstract: Methods of measuring a physical or physiological parameter using an integrated adhesive sensor array including a sensor hub and a detachable sensor pod are presented. In one example, a method comprises: establishing a first communication link between the sensor hub and a wireless receiver; attaching at least the sensor hub directly to a body; establishing a second communication link between the detachable sensor pod and the sensor hub; sensing a physical or physiological parameter by the detachable sensor pod; transmitting sensor data of the physical or physiological parameter from the detachable sensor pod to the sensor hub via the second communication link; and transmitting the sensor data from the sensor hub to the wireless receiver via the first communication link.

Abstract: Disclosed are systems, devices, and methods for connecting a flexible circuit to a battery. Conductive pads are formed simultaneous with mounting and reflowing circuitry components on a flexible circuit, where the conductive pads serve as preformed tabs capable of being joined to terminals of a battery. The flexible circuit can be bent in a manner so that the conductive pads are positioned adjacent to the positive and negative terminals of a battery, such as a coin cell battery. The conductive pads can be attached to the terminals to form a cost-efficient and space-efficient design connecting the battery to the flexible circuit.