Non-invasive sensor calibration device
View Patent ↗A calibration device according to embodiments of the disclosure is capable of being used with a non-invasive sensor. Certain embodiments of the calibration device simulate a human pulse by varying the volume of blood being measured by the optical sensor. Further, embodiments of the calibration device allow the generation of calibration curves or data for measured parameters over larger ranges of measured values compared to patient-based calibration.
1. A calibration device for calibrating a noninvasive sensor, the calibration device comprising:
a blood model container comprising at least one recess disposed on its surface, the at least one recess configured to move past a non-invasive sensor in order to generate at least one parameter measurement;
a first portion of the at least one recess holding a first amount of blood model; and
a second portion of the at least one recess holding a second amount of the blood model, wherein the second amount of the blood model in the second portion is greater than the first amount of the blood model held in the first portion.
2. The calibration device of claim 1 , wherein the non-invasive sensor comprises a light emitting section and a light receiving section positioned around an edge of the blood model container, the light emitting section positioned over a side of the blood model container, the light receiving section positioned opposite the light emitting section over an opposite side of the blood model container, the blood model container movable through the light emitting section and the light-receiving section.
3. The calibration device of claim 2 , wherein the first and second portions of the recess traverse the light emitting section and light receiving section of the sensor.
4. The calibration device of claim 1 , wherein the blood model is at least partially liquid.
5. The calibration device of claim 1 , wherein the container is a disk.
6. The calibration device of claim 5 , further comprising:
a driver for driving the blood model container past the sensor; and
a spindle, the spindle connected to the center of the disk and to the driver, the driver rotating the spindle and the disk.
7. The calibration device of claim 1 , wherein the blood model container is a rectangular container.
8. The calibration device of claim 7 , further comprising a driver for driving the rectangular container linearly forward and backwards past the sensor.
9. The calibration device of claim 1 , wherein the first portion is a different depth than the second portion.
10. The calibration device of claim 1 , wherein the first portion is a different width than the second portion.
11. The calibration device of claim 1 , wherein the blood container comprises two or more recesses.
12. The calibration device of claim 11 wherein the blood container comprises a first recess and a second recess, the first recess of a different size than the second recess.