PHYSIOLOGICAL MONITOR CALIBRATION SYSTEM

1 . (canceled)

2 . A measurement device comprising:

a measurement module that obtains a noninvasive physiological parameter measurement from a sensor coupled to a patient; and

a calibration module, implemented in a hardware processor, that:

receives an alternative physiological parameter measurement;

determines an offset value based at least in part on a difference between the noninvasive physiological parameter measurement and the alternative physiological parameter measurement;

calibrates the measurement module based at least in part on the offset value;

tracks an age of the offset value over time;

outputs the offset value for presentation on a display; and

provides an indication to a user of the age of the offset value.

3 . The measurement device of claim 2 , wherein the noninvasive physiological parameter measurement comprises a set of measurements.

4 . The measurement device of claim 2 , wherein the alternative physiological parameter measurement comprises a set of measurements.

5 . The measurement device of claim 2 , wherein the calibration module further provides a user interface control enabling a user to provide an additional offset value.

6 . The measurement device of claim 2 , wherein the presentation of the offset value on the display is modified over time to reflect the age of the offset value over time.

7 . The measurement device of claim 2 , wherein the calibration module further provides a user interface control enabling a user to input the alternative physiological parameter measurement into the measurement device.

8 . The measurement device of claim 2 , wherein the sensor measures a hemoglobin parameter.

9 . A system for calibrating a measurement device, the system comprising:

a measurement module configured to:

receive a signal from a physiological sensor;

obtain a noninvasive measurement value of a physiological parameter responsive to the signal; and

a calibration module comprising a hardware processor, the calibration module configured to:

receive an input reflecting an invasive measurement value for the physiological parameter;

calculate a calibration value based at least in part on a difference between the noninvasive measurement value and the invasive measurement value;

calibrate the measurement device using the calibration value; and

output an age of the calibration value for display to a user.

10 . The system of claim 9 , wherein the calibration module is further configured to receive the input reflecting the invasive measurement value at the user interface from the user.

11 . The system of claim 9 , wherein the calibration module is further configured to receive input reflecting the invasive measurement value over a network.

12 . The system of claim 9 , wherein the calibration module is further configured to receive a modification value to the calibration value via the user interface.

13 . The system of claim 12 , wherein the modification value comprises an incremental adjustment.

14 . The measurement device of claim 9 , wherein the user interface modifies a depiction of the calibration value output for display based on the age of the offset value.

15 . A method of calibrating a measurement device, the method comprising:

by a noninvasive measurement device,

acquiring, from a sensor coupled to a patient, noninvasive physiological parameter measurements;

receiving an alternative physiological parameter measurement at the noninvasive measurement device;

determining an offset value based at least in part on a difference between the noninvasive physiological parameter measurements and the alternative physiological parameter measurement;

calibrating the noninvasive measurement device based at least in part on the offset value;

tracking an age of the offset value over time; and

displaying a representation of the offset value on a user interface of the noninvasive measurement device, wherein the representation of the offset value is based at least in part on the age of the offset value.

16 . The method of claim 15 , further comprising providing a user interface on the noninvasive measurement device, the user interface configured to provide functionality for a user to input the alternative physiological parameter measurement.

17 . The method of claim 15 , further comprising providing a user interface on the noninvasive measurement device, the user interface configured to provide functionality for a user to modify the offset value.

18 . The method of claim 15 , further comprising providing a user interface on the noninvasive measurement device, the user interface configured to provide functionality for a user to provide an additional offset value

19 . The method of claim 15 , wherein the noninvasive physiological parameter is hemoglobin.

20 . The method of claim 15 , wherein the noninvasive physiological parameter is glucose.