NON-INVASIVE INTRAVASCULAR VOLUME INDEX MONITOR
First Claim
1. A non-invasive multi-parameter patient monitoring system configured to detect edema, the non-invasive multi-parameter patient monitoring system comprisinga sensor having at least one emitter and an associated detector configured to attach to a tissue site, said detector providing a detector signal responsive to the intensity of energy from said emitter after it has passed through said tissue site;
- anda patient monitor comprising;
a sensor interface configured to receive said detector signal from said sensor; and
a processor configured to determine intravascular volume index (IVI) levels of a patient based on the received detector signal, whereinthe patient monitor is configured to track the determined IVI levels, and further configured to detect and/or monitor the progress of edema based on the determined IVI levels.
4 Assignments
0 Petitions
Accused Products
Abstract
A non-invasive electronic patient monitor tracks one or more physiological parameters of a patient, such as intravascular volume index (IVI), extravascular volume index (EVI), total hemoglobin (SpHb), impedance, and/or weight. The patient monitor determines if one or more of the physiological parameters are within a predetermined range. The patient monitor activates an alarm if one or more of the physiological parameters are outside the predetermined range and indicates a patient can be experiencing edema and/or heart failure, or sepsis.
-
Citations
23 Claims
-
1. A non-invasive multi-parameter patient monitoring system configured to detect edema, the non-invasive multi-parameter patient monitoring system comprising
a sensor having at least one emitter and an associated detector configured to attach to a tissue site, said detector providing a detector signal responsive to the intensity of energy from said emitter after it has passed through said tissue site; - and
a patient monitor comprising; a sensor interface configured to receive said detector signal from said sensor; and a processor configured to determine intravascular volume index (IVI) levels of a patient based on the received detector signal, wherein the patient monitor is configured to track the determined IVI levels, and further configured to detect and/or monitor the progress of edema based on the determined IVI levels. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
- and
-
10. A non-invasive multi-parameter patient monitoring system configured determine a termination range for administering a diuretic, the non-invasive multi-parameter patient monitoring system comprising
a first and second emitter configured to emit light of at least two wavelengths through tissue; -
a detector configured to sense the light after it has passed through the tissue and to generate a signal indicative of the sensed light; and a patient monitor comprising; a sensor interface configured to receive said generated signal from said detector; and a processor configured to determine intravascular volume index (IVI) levels of a patient based on the received generated signal, wherein the patient monitor is configured to track the determined IVI levels, and further configured to indicate that administration of the diuretic can be terminated once current IVI levels are at or below a predetermined threshold. - View Dependent Claims (11, 12, 13, 14)
-
-
15. A method for detecting and/or monitoring the progression of edema, the method comprising:
-
receiving at a non-invasive multi-parameter patient monitor data indicative of intravascular volume index (IVI) levels of a patient, wherein the data is obtained by detecting light from a light emitting element after the light has been attenuated by tissue; determining IVI levels using the non-invasive multi-parameter patient monitor; tracking the determined IVI levels of the patient; and detecting and/or monitoring the progress of edema based on the tracked SpHb levels. - View Dependent Claims (16, 17, 18)
-
-
19. A non-invasive multi-parameter patient monitor configured to detect and/or measure the progression of edema, the non-invasive multi-parameter patient monitoring system comprising
a sensor interface configured to receive a signal from a sensor, wherein the signal is responsive to the intensity of energy from an emitter after it has passed through a tissue site and the signal is indicative of intravascular volume index (IVI) levels at the tissue site; -
a processor configured to determined IVI levels of a patient based on the signal, wherein the patient monitor is configured to track the determined IVI levels of the patient and further configured to activate an alert if the determined IVI levels are approximately equal to or greater than a predetermined threshold.
-
-
20. A method for detecting and/or monitoring the progression of edema using a non-invasive multi-parameter patient monitor, the method comprising:
-
emitting light of at least two different wavelengths from a light emitting element; detecting light from the light emitting element after the light has been attenuated by tissue; measuring intravascular volume index (IVI) levels of a patient based on the detected light using a non-invasive multi-parameter patient monitor; tracking the measured IVI levels of the patient; detecting and/or monitoring the progress of edema based on the tracked IVI levels; and alerting a user of the detection and/or progression of edema based on the tracked IVI levels.
-
-
21. A method for determining a termination range for administering a diuretic using a non-invasive multi-parameter patient monitor, the method comprising:
-
computing intravascular volume index (IVI) levels of a patient based on an intensity signal indicative of IVI levels at a tissue site upon administration of a diuretic to the patient; tracking the computed IVI levels of the patient using a non-invasive multi-parameter patient monitor; and indicating administration of the diuretic can be terminated once tracked IVI levels are at or below a predetermined threshold.
-
-
22. A non-invasive multi-parameter patient monitoring system configured to detect sepsis, the non-invasive multi-parameter patient monitoring system comprising:
-
a sensor having at least one emitter and an associated detector configured to attach to a tissue site, said detector providing a detector signal responsive to the intensity of energy from said emitter after it has passed through said tissue site; and a patient monitor comprising; a sensor interface configured to receive said detector signal from said sensor; and a processor configured to determine intravascular volume index (IVI) levels of a patient based on the received detector signal, wherein the patient monitor is configured to track the determined IVI, and further configured to monitor the progress of sepsis based on the tracked IVI. - View Dependent Claims (23)
-
Specification