公开(公告)号：US20240115156A1

公开(公告)日：2024-04-11

申请号：US18265815

申请日：2021-12-06

Applicant: Analog Devices, Inc.

Inventor： Joohyun SEO ,  Tony J. AKL

IPC: A61B5/08 ,  A61B5/00 ,  A61B5/0537 ,  A61B5/25

CPC classification number: A61B5/0809 ,  A61B5/0537 ,  A61B5/25 ,  A61B5/6823 ,  A61B5/6831 ,  A61B5/0536 ,  A61B2562/04

Abstract: One embodiment is a method of performing thoracic tomography on a human subject including performing multiple 4-wire impedance measurements on a region of interest to obtain measured impedance data; comparing the measured impedance data to simulated impedance data obtained from a plurality of models of the region of interest; for each of the models, determining a fit of the model based on a comparison between the simulated impedance data obtained from the model and the measured impedance data; and integrating individual resistivity estimates obtained from the models based on a fit of the model such that the individual resistivity estimate from a better fitting model is weighted more heavily in a final resistivity estimate than an individual resistivity estimate from a worse fitting model.

公开(公告)号：US20220338818A1

公开(公告)日：2022-10-27

申请号：US17723299

申请日：2022-04-18

Applicant: Analog Devices, Inc.

Inventor： Venugopal GOPINATHAN ,  Tony J. AKL

IPC: A61B5/00 ,  A61B5/0205 ,  A61B5/021 ,  A61B5/0295

Abstract: The present disclosure describes a system for detecting abnormal blood pressure or blood volume in a user, the system comprising a processing system; a pulse transit time (PTT) detection system for providing a PTT signal indicative of a PTT of the user to the processing system, wherein PTT of the user is used as a surrogate for a blood pressure (BP) of the user; and an electrodermal activity (EDA) detection system for providing an EDA signal indicative of an EDA of the user to the processing system; wherein the processing system processes the PTT signal and the EDA signal to determine an index indicative of an abnormal blood pressure or blood volume of the user.

公开(公告)号：US20200260118A1

公开(公告)日：2020-08-13

申请号：US16787397

申请日：2020-02-11

Applicant: Analog Devices, Inc.

Inventor： Patrick RIEHL ,  Tony J. AKL ,  Venugopal GOPINATHAN ,  Hyung Sung YOON

IPC: H04N19/65 ,  G06N20/00 ,  H04N19/20 ,  H04N19/91

Abstract: There is disclosed herein examples of systems and methods for compressing a signal. Samples of the signal can be segmented and the samples within each of the segments can be averaged to produce a value that can represent the samples within the segment. The number of samples to average in each segment may be determined based on an error threshold, such that the number of samples being averaged can be maximized to produce less data to be transmitted while maintaining the representation of the samples within the error threshold. In some embodiments, a signal can be separated into a timing reference, a representative periodic function, and a highly compressible error signal. The error signal can be utilized for reproducing a representation of the signal.

公开(公告)号：US20220124373A1

公开(公告)日：2022-04-21

申请号：US17566547

申请日：2021-12-30

Applicant: Analog Devices, Inc.

Inventor： Patrick RIEHL ,  Tony J. AKL ,  Venugopal GOPINATHAN ,  Hyung Sung YOON

IPC: H04N19/65 ,  G06N20/00 ,  H04N19/91 ,  H04N19/20 ,  A61B5/364 ,  A61B5/00

Abstract: There is disclosed herein examples of systems and methods for compressing a signal. Samples of the signal can be segmented and the samples within each of the segments can be averaged to produce a value that can represent the samples within the segment. The number of samples to average in each segment may be determined based on an error threshold, such that the number of samples being averaged can be maximized to produce less data to be transmitted while maintaining the representation of the samples within the error threshold. In some embodiments, a signal can be separated into a timing reference, a representative periodic function, and a highly compressible error signal. The error signal can be utilized for reproducing a representation of the signal.

公开(公告)号：US20210161476A1

公开(公告)日：2021-06-03

申请号：US16699998

申请日：2019-12-02

Applicant: Analog Devices, Inc.

Inventor： Tony J. AKL ,  Venugopal GOPINATHAN

IPC: A61B5/00 ,  A61B5/0245 ,  G06T7/00 ,  A61B5/0452 ,  A61B7/04

Abstract: There is disclosed herein examples of systems and methods of processing captured heart sounds with frequency-dependent normalization. Based on an amount of attenuation of a first heart sound, a second heart sound can be normalized by modifying portions of the second heart sound by amounts determined based on frequencies of the portions. Accordingly, the systems and methods disclosed herein can result in different amounts of modification of different portions of the second heart sound based on the different frequencies of the portions.

公开(公告)号：US20200054238A1

公开(公告)日：2020-02-20

申请号：US16478848

申请日：2018-01-24

Applicant: Analog Devices, Inc.

Inventor： Venugopal GOPINATHAN ,  James DOSCHER ,  Tony J. AKL

IPC: A61B5/053 ,  A61B5/0404 ,  A61B5/0205 ,  A61B5/00

Abstract: Devices, systems, and methods for non-invasively detecting and monitoring medical conditions using multiple modalities of sensing include at least two electrodes configured to be positioned on a subject, an acoustic sensor configured to be positioned on a subject, a thoracic impedance measurement module connected to the electrodes, for measuring a first impedance between the electrodes, and a heart acoustic measurement module connected to the acoustic sensor, for detecting and measuring a heart sound from the acoustic sensor.