公开(公告)号：US11367525B2

公开(公告)日：2022-06-21

申请号：US16723678

申请日：2019-12-20

Applicant: Covidien LP

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

IPC: A61B5/1455 ,  A61B5/024 ,  A61B5/0205 ,  G16H40/40 ,  A61B5/00 ,  A61B5/021 ,  A61B5/08

Abstract: A system for continuous non-invasive blood pressure monitoring may include processing circuitry configured to determine calibration data for a continuous non-invasive blood pressure model at a calibration point, receive, from an oxygen saturation sensing device, a PPG signal at a particular time subsequent to the calibration point, derive values of the set of metrics for the patient from the PPG signal, and determine, using the continuous non-invasive blood pressure model and based at least in part on inputting the calibration data determined at the calibration point, the values of the set of metrics, and an elapsed time at the particular time since the calibration point into the continuous non-invasive blood pressure model, a blood pressure of the patient at the particular time.

公开(公告)号：US20220104737A1

公开(公告)日：2022-04-07

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：US10932673B2

公开(公告)日：2021-03-02

申请号：US16165108

申请日：2018-10-19

Applicant: Covidien LP

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

IPC: A61B5/0205 ,  A61B5/00 ,  A61B5/20 ,  G16H10/60 ,  A61B5/1455 ,  A61B5/021

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：US20250098986A1

公开(公告)日：2025-03-27

申请号：US18885869

申请日：2024-09-16

Applicant: Covidien LP

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

IPC: A61B5/113 ,  A61B5/00 ,  A61B5/11

Abstract: A method and system for performing a depth data processing procedure for obtaining physiological information from depth data. The depth processing procedure comprises obtaining depth data representing depth across a field of view, and deriving at least one signal from said depth data. The method further comprises: obtaining further information from at least one of: the depth data and the at least one signal derived from the depth data; using at least said further information to determine an absence of respiratory motion in the field of view; and setting a flag for the depth data processing procedure or a further procedure based on said determination of the absence of respiratory motion in the field of view.

公开(公告)号：US12048537B2

公开(公告)日：2024-07-30

申请号：US16154288

申请日：2018-10-08

Applicant: Covidien LP

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

IPC: A61B5/1455 ,  A61B5/0225 ,  A61B5/03 ,  A61B5/00 ,  A61B5/026 ,  A61B5/0295

CPC classification number: A61B5/14553 ,  A61B5/0225 ,  A61B5/031 ,  A61B5/0261 ,  A61B5/0295 ,  A61B5/4064 ,  A61B5/7246

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 an altered blood pressure value indicative of a reference blood pressure of the patient at a reference site based on the blood pressure signal. The altered blood pressure value may enable a more accurate subsequent determination of a value indicative of the autoregulation status of the patient compared to an unaltered blood pressure value. In some examples, the processing circuitry may provide a signal indicative of the autoregulation status of the patient to an output device to enable a clinician to monitor the autoregulation status of the patient.

公开(公告)号：US20240164727A1

公开(公告)日：2024-05-23

申请号：US18429173

申请日：2024-01-31

Applicant: COVIDIEN LP

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

IPC: A61B5/00 ,  A61B5/02 ,  A61B5/021 ,  A61B5/026 ,  A61B5/03

CPC classification number: A61B5/7275 ,  A61B5/02028 ,  A61B5/021 ,  A61B5/026 ,  A61B5/03 ,  A61B5/7246

Abstract: In some examples, a device includes a memory configured to store a first relationship between a blood pressure and another physiological parameter of a patient, the first relationship being indicative of cerebral autoregulation of the patient. The device also includes processing circuitry configured to receive first and second signals indicative of the blood pressure and the physiological parameter, respectively, of a patient. The processing circuitry is also configured to determine an expected value and an actual value of the physiological parameter at a particular blood pressure value of the first physiological signal. The processing circuitry is configured to determine, based on a difference between the actual value and the expected value, and store, in the memory, a second relationship between the blood pressure and the physiological parameter, the second relationship being indicative of a change in the cerebral autoregulation of the patient from the first relationship.

公开(公告)号：US11918385B2

公开(公告)日：2024-03-05

申请号：US16838673

申请日：2020-04-02

Applicant: Covidien LP

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

IPC: A61B5/02 ,  A61B5/00 ,  A61B5/021 ,  A61B5/026 ,  A61B5/03

CPC classification number: A61B5/7275 ,  A61B5/02028 ,  A61B5/021 ,  A61B5/026 ,  A61B5/03 ,  A61B5/7246

Abstract: In some examples, a device includes a memory configured to store a first relationship between a blood pressure and another physiological parameter of a patient, the first relationship being indicative of cerebral autoregulation of the patient. The device also includes processing circuitry configured to receive first and second signals indicative of the blood pressure and the physiological parameter, respectively, of a patient. The processing circuitry is also configured to determine an expected value and an actual value of the physiological parameter at a particular blood pressure value of the first physiological signal. The processing circuitry is configured to determine, based on a difference between the actual value and the expected value, and store, in the memory, a second relationship between the blood pressure and the physiological parameter, the second relationship being indicative of a change in the cerebral autoregulation of the patient from the first relationship.

公开(公告)号：US20230060335A1

公开(公告)日：2023-03-02

申请号：US18049116

申请日：2022-10-24

Applicant: Covidien LP

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

IPC: A61B5/00 ,  A61B5/021

Abstract: In some examples, a method includes receiving a signal indicative of a blood pressure of a patient and identifying at least one first portion of the signal comprising a first characteristic of the signal exceeding a first threshold. The method also includes identifying at least one first portion of the signal comprising a second characteristic of the signal exceeding a second threshold, the first characteristic being different than the second characteristic. The method further includes determining a filtered signal indicative of the blood pressure of the patient by excluding the at least one first portion and the at least one second portion from the signal. The method includes determining a set of mean arterial pressure values based on the filtered signal and determining an autoregulation status of the patient based on the set of mean arterial pressure values.

公开(公告)号：US20210193311A1

公开(公告)日：2021-06-24

申请号：US16723678

申请日：2019-12-20

Applicant: Covidien LP

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

IPC: G16H40/40 ,  A61B5/1455 ,  A61B5/00 ,  A61B5/024 ,  A61B5/0205

Abstract: A system for continuous non-invasive blood pressure monitoring may include processing circuitry configured to determine calibration data for a continuous non-invasive blood pressure model at a calibration point, receive, from an oxygen saturation sensing device, a PPG signal at a particular time subsequent to the calibration point, derive values of the set of metrics for the patient from the PPG signal, and determine, using the continuous non-invasive blood pressure model and based at least in part on inputting the calibration data determined at the calibration point, the values of the set of metrics, and an elapsed time at the particular time since the calibration point into the continuous non-invasive blood pressure model, a blood pressure of the patient at the particular time.

公开(公告)号：US20200170517A1

公开(公告)日：2020-06-04

申请号：US16204061

申请日：2018-11-29

Applicant: Covidien LP

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

IPC: A61B5/0225 ,  A61B5/021 ,  A61B5/00 ,  A61B5/11

Abstract: In some examples, devices, systems, and techniques are configured to compensate for changes in sensed blood pressure due to issues such as blood pressure sensor movement. For example, processing circuitry of a device may determine a difference value between a first blood pressure value representative of a blood pressure at a first time and a second blood pressure value representative of the blood pressure at a second time. Responsive to determining that the difference value is greater than or equal to a threshold value, the processing circuitry may generate updated blood pressure values by applying an offset value to the second blood pressure value and subsequently received blood pressure values that compensates for the difference value between the first blood pressure value and the second blood pressure value.