Methods circuits assemblies devices systems facets and associated machine executable code for detecting vital signs
Inventors
Shemesh, Eldad • Kouperman, Igor • Spektor, Boris
Assignees
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Publication Number
US-10736570-B2
Publication Date
2020-08-11
Expiration Date
Abstract
Disclosed are a composite bio-parameter sensor assembly and a wearable device including same, for detecting vital signs of a subject person. The sensor assembly includes one or more sensors, mounted on an outer contact surface of the assembly, having a sensing surface to optically detect one or more parameters of a pulse of the subject. The sensor assembly further includes an additional sensor, facing an inner cavity of the assembly, for optically detecting displacement of the one or more outer sensors. The one or more sensors and the additional sensor are positioned on the opposite sides of a printed circuit board (PCB).
Core Innovation
The invention relates to a composite bio-parameter sensor assembly for detecting vital signs of a subject person. The assembly includes a housing having an inner cavity and a contact surface with a sensing surface on an exterior of the housing, and a printed circuit board (PCB) disposed at least partially within the housing. One or more first sensors face the contact surface to optically detect one or more parameters of a pulse of the subject, so optical pulse parameters are sensed at the skin-contact side of the housing.
A second sensor faces the inner cavity and optically detects displacement of the one or more first sensors with respect to the housing. The one or more first sensors and the second sensor are positioned on opposite sides of the PCB, and the displacement detected by the second sensor is used to assess and compensate displacement of the one or more first sensors while detecting vital signs.
The assembly further correlates the motion of the sensing elements by suspending the PCB on a flexible surface suspendingly connecting the PCB to a chassis. With the wearable wristband device being worn, the flexible surface is stretched and biased towards its original, substantially flat, pre worn shape, causing it and the contact surface to retain contact with the skin of the subject wearing the device, while the first sensors and the second sensor move in sync.
Claims Coverage
The document provides two independent claims: one directed to a composite bio-parameter sensor assembly and one directed to a wearable wristband device. Across these independent claims, the core inventive coverage includes a two-sided optical pulse sensor arrangement with a second optical displacement sensor, and a flexible suspension arrangement that causes the sensors to move in sync while retaining skin contact.
Composite bio-parameter sensor assembly with opposite-side optical pulse and displacement sensing
A housing comprising an inner cavity and a contact surface having a sensing surface on an exterior of the housing; a printed circuit board (PCB) disposed at least partially within the housing; one or more first sensors facing the contact surface to optically detect one or more parameters of a pulse of the subject; and a second sensor facing the inner cavity for optically detecting displacement of the one or more first sensors with respect to the housing, wherein the one or more first sensors and the second sensor are positioned on opposite sides of the PCB.
Wearable wristband device with synchronized sensor motion via flexible suspension
A wearable wristband device including a composite bio-parameter sensor assembly connected thereto for detecting vital signs of a subject person, with a flexible surface suspendingly connecting the PCB to a chassis such that the one or more first sensors and the second sensor are collectively correlated to the flexible surface and move in sync, and wherein the flexible surface is stretched and biased towards its original substantially flat pre worn shape causing it and the contact surface to retain contact with the skin of the subject wearing the device.
The claim coverage centers on an optical pulse sensing front-end combined with an optical displacement sensing interior side, arranged on opposite sides of a PCB, and a flexible suspension mechanism that maintains coordinated movement of the sensors and skin contact during wearing.
Stated Advantages
Enables optical detection of displacement of the one or more first sensors with respect to the housing while the sensors are positioned on opposite sides of a PCB.
Allows coordinated movement of the one or more first sensors and the second sensor to move in sync.
Retains contact with the skin of the subject wearing the wearable wristband device by stretching and biasing the flexible surface toward an original substantially flat pre worn shape.
Compensates displacement by assessing displacement experienced by the one or more first sensors and compensating for it using processing logic.
Supports compensation of SpO2 variations using an optical thermal sensor based on skin temperature and core body temperature.
Documented Applications
Detecting vital signs of a subject person using a wearable wristband device and a composite bio-parameter sensor assembly.
Detecting one or more parameters of a pulse of the subject via optical pulse parameters using first sensors.
Continuous measurement of SpO2 and/or ECG bio parameters using an external sensor component selected from PPG, ECG sensor electrodes, or both.
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