公开(公告)号：US12121364B2

公开(公告)日：2024-10-22

申请号：US18089485

申请日：2022-12-27

Applicant: SOTERA WIRELESS, INC.

Inventor： Matthew Banet ,  Devin McCombie ,  Marshal Dhillon

IPC: A61B5/08 ,  A61B5/00 ,  A61B5/0205 ,  A61B5/11 ,  A61B5/318 ,  A61B5/024 ,  A61B5/0535 ,  A61B5/113 ,  A61B5/346

CPC classification number: A61B5/6801 ,  A61B5/0205 ,  A61B5/1116 ,  A61B5/1118 ,  A61B5/318 ,  A61B5/681 ,  A61B5/721 ,  A61B5/0002 ,  A61B5/02416 ,  A61B5/0535 ,  A61B5/0809 ,  A61B5/0816 ,  A61B5/113 ,  A61B5/346 ,  A61B5/6823 ,  A61B5/6824 ,  A61B5/6826 ,  A61B5/7239 ,  A61B5/746 ,  A61B2562/0219

Abstract: The invention provides a multi-sensor system that uses an algorithm based on adaptive filtering to monitor a patient's respiratory rate. The system features a first sensor selected from the following group: i) an impedance pneumography sensor featuring at least two electrodes and a processing circuit configured to measure an impedance pneumography signal; ii) an ECG sensor featuring at least two electrodes and an ECG processing circuit configured to measure an ECG signal; and iii) a PPG sensor featuring a light source, photodetector, and PPG processing circuit configured to measure a PPG signal. Each of these sensors measures a time-dependent signal which is sensitive to respiratory rate and, during operation, is processed to determine an initial respiratory rate value. An adaptive digital filter is determined from the initial respiratory rate. The system features a second sensor (e.g. a digital 3-axis accelerometer) that attaches to the patient's torso and measures an ACC signal indicating movement of the chest or abdomen that is also sensitive to respiratory rate. This second signal is processed with the adaptive filter to determine a final value for respiratory rate.

公开(公告)号：US11850032B2

公开(公告)日：2023-12-26

申请号：US17457907

申请日：2021-12-06

Applicant: CARDIOSET LTD

Inventor： Michael Shochat ,  Schmuel Gummer

IPC: A61B5/053 ,  A61B5/0535 ,  A61B5/276 ,  A61B5/00 ,  A61B5/0537 ,  A61B5/085

CPC classification number: A61B5/053 ,  A61B5/0535 ,  A61B5/276 ,  A61B5/0537 ,  A61B5/085 ,  A61B5/4878 ,  A61B5/7221

Abstract: Method and system for monitoring an internal electrical impedance of a biological object including Internal Thoracic Impedance (ITI) comprising placing two arrays of electrodes on opposite sides of the biological object, wherein each of said two arrays comprise three equally spaced electrodes; imposing an alternating electrical current between pairs of the electrodes and obtaining voltage signals representative of a voltage drop thereon, calculating two values of internal electrical impedance of the biological object corresponding to the uttermost electrodes of said two arrays of electrodes placed on the opposite sides of the biological object.

公开(公告)号：US20230329637A1

公开(公告)日：2023-10-19

申请号：US18211315

申请日：2023-06-19

Applicant: ART MEDICAL Ltd.

Inventor： Liron ELIA ,  Gavriel J. IDDAN

IPC: A61B5/00 ,  A61J15/00 ,  A61B5/0537 ,  A61B5/0538 ,  A61B5/0535

CPC classification number: A61B5/4878 ,  A61J15/0084 ,  A61B5/0537 ,  A61B5/0538 ,  A61B5/6853 ,  A61J15/0003 ,  A61J15/0049 ,  A61B5/0535 ,  A61B5/02042

Abstract: An apparatus for monitoring for accumulation of lung fluid comprises a feeding tube having first electrode(s) positioned thereon for electrical contact with tissue of an esophagus of a target patient including a lower esophageal sphincter (LES) and/or tissue in proximity to the LES, second electrode(s) sized and shaped for contacting skin of the target patient, and a non-transitory memory having stored thereon code instructions for applying alternating current(s) to pair(s) of first and second electrodes, measuring a voltage over the pair(s), and computing an estimate of a change of lung fluid relative to a baseline in lung(s) of the target patient according to the applied alternating current and measured voltage, wherein the applying, the measuring, and the computing the estimate of the change in lung fluid are iteratively executed for monitoring the target patient for accumulation of lung fluid while the feeding tube is in use.

公开(公告)号：US11737678B2

公开(公告)日：2023-08-29

申请号：US16403397

申请日：2019-05-03

Applicant: Impedimed Limited

Inventor： Scott Chetham ,  Andrew William Ward ,  James McFarlane Kennedy

IPC: A61B5/053 ,  A61B5/00 ,  A61B5/0537 ,  A61B5/0535

CPC classification number: A61B5/0537 ,  A61B5/0022 ,  A61B5/053 ,  A61B5/0535 ,  A61B5/6801 ,  A61B5/7203 ,  A61B5/7221 ,  A61B5/7225 ,  A61B5/7257 ,  A61B5/7278 ,  A61B5/746 ,  A61B5/7475 ,  A61B5/7495 ,  A61B2562/08 ,  A61B2562/166

Abstract: Apparatus for performing impedance measurements on a subject. The apparatus includes a first processing system for determining an impedance measurement procedure and determining instructions corresponding to the measurement procedure. A second processing system is provided for receiving the instructions, using the instructions to generate control signals, with the control signals being used to apply one or more signals to the subject. The second processing system then receives first data indicative of the one or more signals applied to the subject, second data indicative of one or more signals measured across the subject and performs at least preliminary processing of the first and second data to thereby allow impedance values to be determined.

公开(公告)号：US11730428B2

公开(公告)日：2023-08-22

申请号：US16128169

申请日：2018-09-11

Applicant: WITHINGS

Inventor： Paul Edouard

IPC: A61B5/00 ,  A61B5/024 ,  A61B5/11 ,  A61B5/0535 ,  A61B5/08 ,  A61B5/0245 ,  A61B5/316 ,  A61B5/0215

CPC classification number: A61B5/7225 ,  A61B5/0024 ,  A61B5/0245 ,  A61B5/02156 ,  A61B5/02444 ,  A61B5/0535 ,  A61B5/0816 ,  A61B5/1102 ,  A61B5/316 ,  A61B5/7246

Abstract: A method, apparatus and computer program wherein the method comprises: identifying a plurality of extrema points in a detected biosignal; comparing the identified extrema points with a plurality of sets of reference points wherein different sets of reference points correspond to different frequencies of the biosignal; and identifying the set of reference points that most closely fit the identified extrema points to determine a frequency of the biosignal.

公开(公告)号：US11605162B2

公开(公告)日：2023-03-14

申请号：US16947146

申请日：2020-07-21

Applicant: Timpel Medical B.V.

Inventor： Talles Batista Rattis Santos ,  Rafael Mikio Nakanishi

IPC: G06T7/00 ,  G06T7/62 ,  G06T7/11 ,  A61B5/0535 ,  A61B5/08 ,  A61B5/091 ,  G06T11/00 ,  G06V10/25

Abstract: A system includes an electrical tomography system and a volume estimation system. The volume estimation system is configured to reconstruct an initial impedance image based at least partially on received electrical tomography data of a domain, receive prior information associated with the domain, enhance the initial impedance image based at least partially on the received prior information to generate an enhanced impedance image, and based at least partially on the enhanced initial impedance image, generate a volumetric image of a region of interest of the enhanced impedance image, wherein the volumetric image represents a plurality of values indicating a volume of a fluid.

公开(公告)号：US20220322967A1

公开(公告)日：2022-10-13

申请号：US17753383

申请日：2020-09-04

Applicant: ASSOCIATION INSTITUT DE MYOLOGIE

Inventor： Jean-Yves HOGREL ,  Damien BACHASSON

IPC: A61B5/107 ,  A61B5/0535 ,  A61B5/00

Abstract: A method for determining a muscle section of a body part. The muscle section (S) is determined as a function of: at least two electrical resistance values measured through different electrodes located on different locations of the body, at least two electrodes being located along the body part, and a muscle conductivity constant (σ), and a permittivity constant of the muscle (ε).

公开(公告)号：US20220248966A1

公开(公告)日：2022-08-11

申请号：US17486174

申请日：2021-09-27

Applicant: Respiratory Motion, Inc.

Inventor： Jenny Freeman ,  Jordan Brayanov

IPC: A61B5/0205 ,  A61B5/053 ,  A61B5/00 ,  A61B5/091 ,  A61B5/08 ,  A61M11/00 ,  A61M16/00 ,  A61B5/145 ,  A61B5/0535 ,  A61B5/087 ,  A61M5/142 ,  A61M5/168 ,  G16H20/30 ,  G16H20/40 ,  G16H40/40 ,  G16H40/63 ,  G16Z99/00

Abstract: An early warning scoring system and method comprises a computing device, a plurality of sensors for acquiring physiological signals from a patient, wherein the sensors are functionally connected to the computing device, and at least one alarm adapted to output an alert upon an early warning score (EWS) exceeding a predetermined level. The computing device receives the physiological signals from the sensors, analyzes the physiological signals, and based on the analyzed signals, calculates the early warning score, and compares to the early warning score to predetermined limits and, if the score is outside the limits, triggers an alarm or actuates or modifies a treatment or medical intervention.

公开(公告)号：US11291380B2

公开(公告)日：2022-04-05

申请号：US15100243

申请日：2014-11-27

Applicant: University of Western Sydney

Inventor： Paul Breen ,  Gaetano Gargiulo

IPC: A61B5/0295 ,  A61B5/00 ,  A61N1/04 ,  A61N1/36 ,  A61B5/0531 ,  A61B5/11 ,  A61B5/0535 ,  A61B5/107

Abstract: A blood volume monitor includes a carrier mountable on a subject's body part. A measuring arrangement is mounted on the carrier. The measuring arrangement provides data relating to a change in volume of the body part, and outputs signals representative of the change. A control unit is in communication with the measuring arrangement to process data output by the measuring arrangement to determine, using the volume data, the volume of the body part and determines blood volume in the body part. The control unit uses the response signals received from the measuring arrangement and the determined volume of the part of the body to determine the blood volume.

公开(公告)号：US20210401299A1

公开(公告)日：2021-12-30

申请号：US17471756

申请日：2021-09-10

Applicant: Baxter International Inc. ,  BAXTER HEALTHCARE SA

Inventor： Matthew Banet ,  Susan Meeks Pede ,  Marshal Singh Dhillon ,  Andrew Terry ,  Kenneth Robert Hunt

IPC: A61B5/0205 ,  A61B5/00 ,  A61B5/1455 ,  A61B5/02 ,  A61B5/0535 ,  A61B5/282 ,  A61B5/318

Abstract: The invention provides a neck-worn sensor (referred to herein as the ‘necklace’) that is a single, body-worn system that measures the following parameters from an ambulatory patient: heart rate, pulse rate, pulse oximetry, respiratory rate, temperature, thoracic fluid levels, stroke volume, cardiac output, and a parameter sensitive to blood pressure called pulse transit time. From stroke volume, a first algorithm employing a linear model can estimate the patient's pulse pressure. And from pulse pressure and pulse transit time, a second algorithm, also employing a linear algorithm, can estimate systolic blood pressure and diastolic blood pressure. Thus, the necklace can measure all five vital signs along with hemodynamic parameters. It also includes a motion-detecting accelerometer, from which it can determine motion-related parameters such as posture, degree of motion, activity level, respiratory-induced heaving of the chest, and falls.