公开(公告)号：US20220370015A1

公开(公告)日：2022-11-24

申请号：US17740256

申请日：2022-05-09

Applicant: Analog Devices, Inc.

Inventor： Miles BENNETT ,  Foroohar FOROOZAN ,  Di XUE

IPC: A61B5/00 ,  A61B5/024 ,  A61B5/0205 ,  A61B5/11

Abstract: Accuracy of vital signs monitoring systems depend on the quality of the measurements by the sensors. Crude techniques are applied to discard measurements which have a low signal-to-noise ratio or are saturated. A more accurate and flexible technique enables more measurements to be kept, more meaningful signal quality information to be extracted, more accurate vital signs extraction and more systems to readily embed signal quality assessment in the signal processing pipeline. Improvements include preprocessing of the signal that is independent of variations of underlying hardware, use of features with low computational complexity and high predictive power, cross-channel feature extraction, application of a trained machine learning model, and flexible translation of signal quality classification information into a continuous metric for signal quality.

公开(公告)号：US20220304590A1

公开(公告)日：2022-09-29

申请号：US17706196

申请日：2022-03-28

Applicant: Analog Devices, Inc.

Inventor： Charles MATHY ,  Sunrita PODDAR ,  Di XUE ,  Miles BENNETT ,  Foroohar FOROOZAN ,  Edward Joseph DANYLIW ,  Neal Tait KURFISS

IPC: A61B5/08 ,  A61B5/1455 ,  A61B5/00

Abstract: System and apparatus for pulse oximetry. Systems, methods, and devices are presented for placement of the hardware on a body part where detracting signals are strong. In one example, detracting signals include signals from respiration. In various examples, the body part the oximeter is placed on is a wrist, chest, or arm. A computationally efficient pipeline is presented that allows for reliable and robust SpO2 estimation.