公开(公告)号：US11534112B2

公开(公告)日：2022-12-27

申请号：US16854177

申请日：2020-04-21

Applicant: Covidien LP

Inventor： Paul S. Addison ,  Dean Montgomery ,  André Antunes

IPC: A61B5/1455 ,  A61B5/00 ,  G16H50/30 ,  G06F17/14 ,  G06F17/16 ,  G06N3/08

Abstract: Implementations described herein disclose an artificial intelligence (AI) based method for generating an oxygen saturation level output signal using the trained neural network. In one implementation, the method includes receiving a photoplethysmographic (PPG) signal, the PPG signal including a red PPG signal and an infrared PPG signal, generating an input feature matrix by performing time-frequency transform of the PPG signal, training a neural network using the input feature matrix and an oxygen saturation level input signal, and generating an oxygen saturation level output signal using the trained neural network.

公开(公告)号：US20220400960A1

公开(公告)日：2022-12-22

申请号：US17354811

申请日：2021-06-22

Applicant: Covidien LP

Inventor： Dean Montgomery ,  Paul S. Addison ,  Andre Antunes

IPC: A61B5/0205 ,  A61B5/021 ,  A61B5/145 ,  A61B5/20 ,  A61B5/00

Abstract: In some examples, a system is configured to determine a non-cerebral autoregulation status value of a patient using machine learning. In some examples, processing circuitry of the system is configured to determine, using a neural network algorithm that has been trained via machine learning training, an individualized adjustment value that is individualized for the patient, including inputting physiological data associated with the patient. The processing circuitry may determine a non-cerebral autoregulation status of the patient based on a cerebral autoregulation value of the patient based on the non-cerebral autoregulation status value of the patient and the adjustment value.

公开(公告)号：US20220395182A1

公开(公告)日：2022-12-15

申请号：US17821306

申请日：2022-08-22

Applicant: Covidien LP

Inventor： Paul S. Addison ,  Dean Montgomery

IPC: A61B5/021 ,  A61B5/00 ,  A61B5/1455 ,  A61B5/145

Abstract: A monitor configured to monitor autoregulation includes a memory encoding one or more processor-executable routines and a processor configured to access and execute the one or more routines encoded by the memory. When executed, the routines cause the processor to receive one or more physiological signals from a patient, determine a measure indicative of an autoregulation status of the patient based on the one or more physiological signals, generate an autoregulation alarm indicative of an impaired autoregulation status when the measure exceeds a predetermined threshold for more than a predetermined period of time.

公开(公告)号：US11517226B2

公开(公告)日：2022-12-06

申请号：US17061344

申请日：2020-10-01

Applicant: Covidien LP

Inventor： Philip C. Smit ,  Andre Antunes ,  Dean Montgomery ,  Paul S. Addison

IPC: A61B5/1455 ,  A61B5/00

Abstract: In some examples, a system includes an oxygen saturation sensing device configured to sense an oxygen saturation level of a patient and processing circuitry. The processing circuitry may be configured to receive a signal indicative of the oxygen saturation level of the patient, determine that the signal indicates the oxygen saturation level is at or below a desaturation threshold, and in response to determining the oxygen saturation level of the patient is at or below the desaturation threshold, predict, using an oxygen saturation prediction model, whether the oxygen saturation level of the patient will increase above the desaturation threshold by the end of a predefined time period. In response to predicting that the oxygen saturation level of the patient will increase above the desaturation threshold by the end of the predefined time period, the processing circuitry refrains from outputting an indication of the patient experiencing an oxygen desaturation event.

公开(公告)号：US20210327245A1

公开(公告)日：2021-10-21

申请号：US16854059

申请日：2020-04-21

Applicant: Covidien LP

Inventor： Paul S. Addison ,  Dean Montgomery ,  André Antunes

IPC: G08B21/04 ,  G08B21/18 ,  H04N7/18 ,  G06N20/00 ,  G06K9/00

Abstract: Implementations described herein discloses, a method of AI based video tagging for alarm management includes receiving, using a processor, a video stream, the video stream comprising a sequence of images for at least a portion of a patient, determining, using the processor, a physiological parameter for the patient based on the sequence of images, detecting, using machine learning, presence of a noise object and setting a interaction-flag to a positive value in response to detecting the noise object, comparing a quality level of the sequence of images with a threshold quality level, and modifying an alarm level based on the value of the interaction-flag and comparison of the quality level of the sequence of depth images with the threshold quality level.

公开(公告)号：US20210177275A1

公开(公告)日：2021-06-17

申请号：US17188708

申请日：2021-03-01

Applicant: Covidien LP

Inventor： Paul S. Addison ,  Dean Montgomery ,  Andre Antunes

IPC: A61B5/0205 ,  A61B5/00 ,  A61B5/20 ,  G16H10/60

Abstract: A system for monitoring autoregulation may include processing circuitry configured to receive a blood pressure signal indicative of an acquisition blood pressure of a patient at an acquisition site and an oxygen saturation signal indicative of an oxygen saturation of the patient. The processing circuitry may determine a cerebral autoregulation status value based on the blood pressure signal and the oxygen saturation signal. The processing circuitry may determine a non-cerebral autoregulation status value based on the cerebral autoregulation status value and an adjustment value. The processing circuitry provide to an output device a signal indicative of the non-cerebral autoregulation status value and a signal indicative of the cerebral autoregulation status value to enable a clinician to monitor the autoregulation status of the patient.

公开(公告)号：US10660530B2

公开(公告)日：2020-05-26

申请号：US15962486

申请日：2018-04-25

Applicant: Covidien LP

Inventor： Dean Montgomery ,  Paul S. Addison

IPC: A61B5/02 ,  A61B5/0205 ,  A61B5/00 ,  A61B5/021 ,  A61B5/1455

Abstract: In some examples, a device includes processing circuitry configured to determine a set of correlation coefficient values for values of first and second physiological parameters. The processing circuitry is further configured to determine that the first physiological parameter changes rapidly in a particular time period. The processing circuitry is configured to select a correlation coefficient value associated with the particular time period and determine an updated value of the selected correlation coefficient value in response to determining that the first physiological parameter changes rapidly in a particular time period. The processing circuitry is further configured to determine an estimate of a limit of autoregulation of the patient based on the set of correlation coefficient values and the updated value. The processing circuitry is configured to determine an autoregulation status based on the estimate of the limit of autoregulation and output, for display, an indication of the autoregulation status.

公开(公告)号：US20200069195A1

公开(公告)日：2020-03-05

申请号：US16675394

申请日：2019-11-06

Applicant: Covidien LP

Inventor： Paul Stanley Addison ,  James N. Watson ,  Dean Montgomery

IPC: A61B5/0205 ,  A61B5/021 ,  A61B5/026 ,  A61B5/145 ,  A61B5/1455 ,  A61B5/00 ,  A61B5/02 ,  G16H40/63 ,  G16H50/30 ,  G16H50/20

Abstract: A method for monitoring autoregulation includes, using a processor, using a processor to execute one or more routines on a memory. The one or more routines include receiving one or more physiological signals from a patient, determining a correlation-based measure indicative of the patient's autoregulation based on the one or more physiological signals, and generating an autoregulation profile of the patient based on autoregulation index values of the correlation-based measure. The autoregulation profile includes the autoregulation index values sorted into bins corresponding to different blood pressure ranges. The one or more routines also include designating a blood pressure range encompassing one or more of the bins as a blood pressure safe zone indicative of intact regulation and providing a signal to a display to display the autoregulation profile and a first indicator of the blood pressure safe zone.

公开(公告)号：US20190328242A1

公开(公告)日：2019-10-31

申请号：US15962486

申请日：2018-04-25

Applicant: Covidien LP

Inventor： Dean Montgomery ,  Paul S. Addison

IPC: A61B5/0205 ,  A61B5/00

Abstract: In some examples, a device includes processing circuitry configured to determine a set of correlation coefficient values for values of first and second physiological parameters. The processing circuitry is further configured to determine that the first physiological parameter changes rapidly in a particular time period. The processing circuitry is configured to select a correlation coefficient value associated with the particular time period and determine an updated value of the selected correlation coefficient value in response to determining that the first physiological parameter changes rapidly in a particular time period. The processing circuitry is further configured to determine an estimate of a limit of autoregulation of the patient based on the set of correlation coefficient values and the updated value. The processing circuitry is configured to determine an autoregulation status based on the estimate of the limit of autoregulation and output, for display, an indication of the autoregulation status.

公开(公告)号：US20190269334A1

公开(公告)日：2019-09-05

申请号：US15911449

申请日：2018-03-05

Applicant: Covidien LP

Inventor： Paul S. Addison ,  Dean Montgomery ,  Andre Antunes

IPC: A61B5/021 ,  A61B5/00 ,  A61B5/04 ,  G06F17/11

Abstract: In some examples, a device includes a display and processing circuitry configured to receive a physiological signal indicative of a physiological parameter of a patient. The processing circuitry is also configured to determine a first set of mean arterial pressure values of the patient for a time period based on the physiological signal using a first algorithm. In some examples, the processing circuitry is further configured to determine an autoregulation status of the patient based on the first set of mean arterial pressure values. In some examples, the processing circuitry is configured to present, via the display, a second set of mean arterial pressure values of the patient for the time period, wherein the second set of mean arterial pressure values are determined using a second algorithm different from the first algorithm.