Physiological trend monitor
First Claim
Patent Images
1. A physiological trend monitoring method comprising:
- transmitting light having multiple wavelengths into a patient tissue site;
generating a sensor signal responsive to the light after attenuation by pulsatile arterial blood flow within the tissue site;
detecting a blood parameter trend according to the sensor signal; and
generating an alarm according to the blood parameter trend.
4 Assignments
0 Petitions
Accused Products
Abstract
A physiological trend monitor has a sensor signal responsive to multiple wavelengths of light transmitted into a tissue site. The transmitted light is detected after attenuation by pulsatile blood flow within the tissue site. A processor has an input responsive to the sensor signal and a physiological parameter output. Features are extracted from the physiological parameter output. Criteria are applied to the features. An alarm output is generated when the criteria are satisfied.
-
Citations
15 Claims
-
1. A physiological trend monitoring method comprising:
-
transmitting light having multiple wavelengths into a patient tissue site; generating a sensor signal responsive to the light after attenuation by pulsatile arterial blood flow within the tissue site; detecting a blood parameter trend according to the sensor signal; and generating an alarm according to the blood parameter trend. - View Dependent Claims (2, 3, 4, 5)
-
-
6. A physiological trend monitor comprising:
-
a sensor signal responsive to multiple wavelengths of light transmitted into a tissue site and detected after attenuation by pulsatile blood flow within the tissue site; a processor having an input responsive to the sensor signal and a physiological parameter output; a plurality of features extracted from the physiological parameter output; a plurality of criteria applied to the features; and an alarm output generated when the criteria are satisfied. - View Dependent Claims (7, 8, 9, 10)
-
-
11. A physiological trend monitor comprising:
-
a detector responsive to multiple wavelengths of light transmitted into a tissue site after attenuation by pulsatile blood flow within the tissue site so as to generate a sensor signal; a processor means for calculating a physiological measurement in response to the sensor signal; a pattern extractor means for identifying features of the physiological measurement; a pattern memory means for storing a reference pattern; and a pattern comparator means for triggering an alarm if the identified features match the reference pattern. - View Dependent Claims (12, 13, 14, 15)
-
Specification