Portable device with multiple integrated sensors for vital signs scanning
In one embodiment of the invention, a portable device with multiple integrated sensors for vital signs scanning and method of using said device is disclosed. The portable personal scanning device includes multiple sensors such as a plurality of ECG, thermometer, PPG, accelerometer, and microphone for determining a user's vital signs. The method includes concurrently scanning with one or more sensors, validating and enhancing the results of each sensor scan with other concurrent sensor scan and patient interaction models, processing the sensor scans separately or in combination to extract user's vital signs, validating the vital signs extracted by comparison to physiological models, and fusing the similar vital signs extracted from more than one process according to a determination of the measure of quality of the process that produced the vital sign.
1. A non-invasive method of measuring vital signs with a portable multi-sensor vital signs scanner, the non-invasive method of measuring vital signs comprising:
applying the portable multi-sensor vital signs scanner to a user's body in a first usage configuration for a first measurement period, wherein the first usage configuration includes pressing one electrode of the vital signs scanner with the user's finger while another electrode of the vital sign scanner is pressed against the user's temple;
measuring a plurality of vital signs data with the vital signs scanner in the first usage configuration;
applying the portable multi-sensor vital signs scanner to the user's body in a second usage configuration for a second measurement period, wherein the second usage configuration includes pressing the vital signs scanner against the user's chest;
recording sound using a microphone of the vital signs scanner when the vital signs scanner is in the second usage configuration;
measuring data related to motion of the user's chest using an accelerometer of the vital signs scanner when the vital signs scanner is in the second usage configuration;
providing feedback to the user in response to detecting one or more noise signatures based on the data from the accelerometer, wherein the feedback includes providing an indication to the user to modify at least one of a gripping or a positioning of the vital signs scanner;
using data from the accelerometer to make an initial determination of a respiration rate of the user, the respiration rate including a maximum inhalation time point and a maximum exhalation time point;
determining an alternate maximum inhalation time point and an alternate maximum exhalation time point based on at least the maximum inhalation time point, the maximum exhalation time point, and the recorded sound; and
determining a final respiration rate based on at least the maximum inhalation time point, the maximum exhalation time point, the alternate maximum inhalation time point.
2. The non-invasive method of claim 1 , further comprising:
signal processing a plurality of sensor signals captured during the first measurement period with a signal processing model to reduce noise and to obtain a value for one or more vital signs.
3. The non-invasive method of claim 1 , further comprising:
signal processing the plurality of sensor signals captured during the first measurement period with a first interaction model to correct and improve the vital signs measurement results in response to the user interaction with the vital signs scanner.
4. The non-invasive method of claim 3 , further comprising:
comparing the vital signs measurement results with a physiological model to validate the vital signs measurement results.
5. The non-invasive method of claim 1 , further comprising:
signal processing a plurality of sensor signals captured during the second measurement period with a second interaction model to correct and improve the vital signs measurement results in response to the user interaction with the vital signs scanner.
6. The non-invasive method of claim 5 , further comprising:
comparing the vital signs measurement results with a physiological model to validate the vital signs measurement results.
7. The non-invasive method of claim 1 , further comprising:
signal processing a sensor signal captured by a first sensor during the first measurement period with a first signal processing model to reduce noise and to obtain a first value for a vital sign;
signal processing the sensor signal captured by the first sensor during the first measurement period with a second signal processing model to reduce noise and to obtain a second value for the vital sign; and
fusing the first value and the second value of the vital sign together to generate a vital sign output value for the vital sign.
8. The non-invasive method of claim 7 , wherein the vital sign is pulse width transit time (PWTT).