Methods and systems for conditioning physiological information using a normalization technique
First Claim
1. A subject pulse oximetry monitoring system for conditioning determining a physiological rate, comprising:
- a pulse oximetry sensor configured to generate a physiological signal, wherein the pulse oximetry sensor is configured to detect light attenuated by a subject; and
a pulse oximeter coupled to the pulse oximetry sensor, wherein equipment pulse oximeter is configured to;
receive the physiological signal from the pulse oximetry sensor;
generate a positive signal by replacing each negative value of the physiological signal with a predetermined value;
generate a negative signal by replacing each positive value of the physiological signal with a predetermined value;
filter the positive signal to generate a filtered positive signal;
filter the negative signal to generate a filtered negative signal;
combine the filtered positive signal and the filtered negative signal to generate a combined signal;
modify the physiological signal based on the combined signal;
determine a physiological rate of the subject based on the modified physiological signal; and
display the physiological rate of the subject on a display.
2 Assignments
0 Petitions
Accused Products
Abstract
A physiological monitoring system may determine physiological information, such as physiological rate information, from a physiological signal. The system may condition the physiological signal to assist in the determination of the physiological information. The system may generate a positive signal and a negative signal based on respective positive and negative values of the physiological signal. The system may filter the positive and negative signals, combine the filtered signals, and modify the physiological signal based on the combined signal. The physiological signal may be modified, for example, by subtracting the combined signal from the physiological signal.
-
Citations
28 Claims
-
1. A subject pulse oximetry monitoring system for conditioning determining a physiological rate, comprising:
-
a pulse oximetry sensor configured to generate a physiological signal, wherein the pulse oximetry sensor is configured to detect light attenuated by a subject; and a pulse oximeter coupled to the pulse oximetry sensor, wherein equipment pulse oximeter is configured to; receive the physiological signal from the pulse oximetry sensor; generate a positive signal by replacing each negative value of the physiological signal with a predetermined value; generate a negative signal by replacing each positive value of the physiological signal with a predetermined value; filter the positive signal to generate a filtered positive signal; filter the negative signal to generate a filtered negative signal; combine the filtered positive signal and the filtered negative signal to generate a combined signal; modify the physiological signal based on the combined signal; determine a physiological rate of the subject based on the modified physiological signal; and display the physiological rate of the subject on a display. - View Dependent Claims (2, 3, 4, 5, 6, 7)
-
-
8. A processing module of a pulse oximeter for determining a physiological rate, wherein the processing module is configured to:
-
receive a physiological signal derived from a pulse oximetry sensor, wherein the pulse oximetry sensor is configured to detect light attenuated by a subject; generate a positive signal by replacing each negative value of the physiological signal with a predetermined value; generate a negative signal by replacing each positive value of the physiological signal with a predetermined value; filter the positive signal to generate a filtered positive signal;
filter the negative signal to generate a filtered negative signal;combine the filtered positive signal and the filtered negative signal to generate a combined signal; modify the physiological signal based on the combined signal; determine a physiological rate of the subject based on the modified physiological signal; and display the physiological rate of the subject on a display. - View Dependent Claims (9, 10, 11, 12, 13, 14)
-
-
15. A method for determining a physiological rate using a pulse oximeter, comprising:
-
receiving, using the pulse oximeter, a physiological signal derived from a pulse oximetry sensor, wherein the pulse oximetry sensor detects light attenuated by a subject; generating, using the pulse oximeter, a positive signal positive by replacing each negative value of the physiological signal with a predetermined value; generating, using the pulse oximeter, a negative signal based on by replacing each positive value of the physiological signal with a predetermined value; filtering, using the pulse oximeter, the positive signal to generate a filtered positive signal; filtering, using the pulse oximeter, the negative signal to generate a filtered negative signal; combining, using the equipment pulse oximeter, the filtered positive signal and the filtered negative signal to generate a combined signal; modifying, using the pulse oximeter, the physiological signal based on the combined signal; determining, using the pulse oximeter, a physiological rate of the subject based on the modified physiological signal; and displaying, using the pulse oximeter, the physiological rate of the subject on a display. - View Dependent Claims (16, 17, 18, 19, 20, 21)
-
-
22. A non-transitory computer-readable medium for use in determining a physiological rate, the non-transitory computer-readable medium comprising:
-
computer program instructions recorded thereon for causing a pulse oximeter to; receive a physiological signal derived from a pulse oximetry sensor, wherein the pulse oximetry sensor detects light attenuated by a subject; generate a positive signal by replacing each negative value of the physiological signal with a predetermined value; generate a negative signal by replacing each positive value of the physiological signal with a predetermined value; filter the positive signal to generate a filtered positive signal; filter the negative signal to generate a filtered negative signal; combine the filtered positive signal and the filtered negative signal to generate a combined signal; modify the physiological signal based on the combined signal; determine a physiological rate of the subject based on the modified physiological signal; and display the physiological rate of the subject on a display. - View Dependent Claims (23, 24, 25, 26, 27, 28)
-
Specification