Optical patient monitor
AssigneeMasimo Corporation
InventorsAmmar Al-Ali, John Graybeal, Massi Joe E. Kiani, Michael Petterson, Chris Kilpatrick
Life of this patent
Estimating the term…
Abstract
An optical based patient monitoring system employing an optical sensor and providing an indication of an optical change which does not correlate to a change in a physiological blood parameter and based on that indication, providing a care provider an indication of a condition of a patient. The optical based patient monitoring system providing the indication of the patient condition in relation to a patient using an IV setup.
Claims16
A method of determining a physiological parameter data through a change in measurement site, the method comprising:
- obtaining first signal data from a sensor at a first measurement site of a patient during a first time period;
- determining a physiological parameter during the first time period based on the first signal data;
- detecting a change in measurement site of the sensor from the first measurement site to a second measurement site of the patient based on additional signal data obtained from the sensor;
- obtaining second signal data from the second measurement site of the patient during a second time period after the first time period and after detecting the change in measurement site of the sensor;
- determining an offset based on a first magnitude of a first portion of the first signal data obtained at the first measurement site and a second magnitude of a second portion of the second signal data obtained at the second measurement site;
- correcting the second signal data based on the determined offset, wherein the correcting comprises shifting the second signal data based on the determined offset;
- and
- determining the physiological parameter during the second time period based on the corrected second signal data.
A system for determining a physiological parameter data through a change in measurement site, the system comprising one or more hardware processors configured to:
- obtain first signal data from a sensor at a first measurement site of a patient during a first time period;
- determine a physiological parameter during the first time period based on the first signal data;
- detect a change in measurement site of the sensor from the first measurement site to a second measurement site of the patient based on additional signal data obtained from the sensor;
- obtain second signal data from the second measurement site of the patient during a second time period after the first time period and after detecting the change in measurement site of the sensor;
- determine an offset based on a first magnitude of a first portion of the first signal data obtained at the first measurement site and a second magnitude of a second portion of the second signal data obtained at the second measurement site;
- correct the second signal data based on the determined offset, wherein the correcting comprises shifting the second signal data based on the determined offset;
- and
- determine the physiological parameter during the second time period based on the corrected second signal data.
Dependencies are inferred from the claim text.