Granted Patent B2

US 12,357,243 · App. 17/175,404 · Granted Jul 15, 2025

Inventors: Ammar Al-Ali (San Juan Capistrano, CA); John Graybeal (Grantville, PA); Massi Joe E. Kiani (Laguna Niguel, CA); Michael Petterson (Dana Point, CA); Chris Kilpatrick (Irvine, CA)

Assignee: Masimo Corporation

A61B5/7282A61B5/0004A61B5/01A61B5/0205A61B5/021A61B5/024A61B5/08A61B5/0816A61B5/14532A61B5/14539A61B5/14546A61B5/1455A61B5/14551A61B5/318A61B5/412A61B5/4839A61B5/6826A61B5/6832A61B5/6838A61B5/6843A61B5/7221A61B5/7246A61B5/7275A61B5/7405A61B5/742A61B5/746G16H40/63G16H50/30A61B5/082A61B5/14552A61B2560/0285A61B2560/0443A61B2562/222

Abstract

Claims (22)

1. A method of providing cohesive physiological parameter through a change in measurement site, the method comprising:

obtaining first measurements measured by a sensor for a determination of a physiological parameter from a first measurement site of a patient, wherein the first measurements include a first magnitude of a signal and wherein the physiological parameter is determined based on the first magnitude of the signal;

detecting a movement of the sensor in relation to the first measurement site;

obtaining second measurements including a second magnitude measured by the sensor after the detection of the movement;

determining a shift in the second magnitude after the detected movement as compared to the first magnitude before the movement;

determining the shift is related to the detected movement and not related to variation in a patient's physiological condition;

normalizing the second measurements based on the determination that the shift is related to the detected movement and not related to the variation in a patient's physiological condition;

determining the physiological parameter based on the normalized second measurements after the detected movement; and

generating a control output to lock-out a patient controlled analgesia based on the determined physiological parameter.

2. The method of claim 1 , wherein the physiological parameter comprises a met-hemoglobin measurement.

3. The method of claim 1 , wherein calibrating comprises adding an offset to the second magnitude.

4. The method of claim 3 , wherein the offset is calculated based on a most recent physiological parameter measurement before the detected movement.

5. The method of claim 4 , wherein the offset is calculated with a projection of the physiological parameter extrapolated from a trend line fit before the detected movement to after the detected movement.

6. A system for providing cohesive physiological parameter through a change in measurement site, the system comprising one or more hardware processors configured to:

obtain first measurements measured by a sensor for a determination of a physiological parameter from a first measurement site of a patient, wherein the first measurements include a first magnitude of a signal and wherein the physiological parameter is determined based on the first magnitude of the signal;

detect a movement of the sensor in relation to the first measurement site;

obtain second measurements including a second magnitude measured by the sensor after the detection of the movement;

determine a shift in the second magnitude after the detected movement as compared to the first magnitude before the movement;

determine the shift is related to the detected movement and not related to variation in a patient's physiological condition;

normalize the second measurements based on the determination that the shift is related to the detected movement and not related to the variation in a patient's physiological condition;

determine the physiological parameter based on the normalized second measurements after the detected movement; and

generate a control output to lock-out a patient controlled analgesia based on the determined physiological parameter.

Assignments (1)

Continuity (5)

References Cited (400)