PHYSIOLOGICAL MONITOR CALIBRATION SYSTEM

• US 20150257689A1
• Filed: 03/23/2015
• Published: 09/17/2015
• Est. Priority Date: 05/15/2006
• Status: Active Application

• Current Assignee: Willow Laboratories Incorporated
• Original Assignee: Cercacor Laboratories
• Inventors: Al-Ali, Ammar, Kiani, Massi Joe E.
• Application Number:
  US14/666,126
• Publication Number:
  US 20150257689A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: A61B 2560/0223 of calibration, e.g. protocols for calibrating sensors
• CPC Class Codes: A61B 2560/0228 using calibration standards
• CPC Class Codes: A61B 2562/0295 Strip shaped analyte sensors for apparatus classified in A61B5/145 or A61B5/157
• CPC Class Codes: A61B 5/0022 Monitoring a patient using a global network, e.g. telephone networks, internet
• CPC Class Codes: A61B 5/145 Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissuemeasuring of blood pressure or blood flow A61B5/02; non-radiation detecting or locating of foreign bodies in blood A61B5/06
• CPC Class Codes: A61B 5/14532 for measuring glucose, e.g. by tissue impedance measurement
• CPC Class Codes: A61B 5/14542 for measuring blood gases A61B5/14551 takes precedence
• CPC Class Codes: A61B 5/14546 for measuring analytes not otherwise provided for, e.g. ions, cytochromes
• CPC Class Codes: A61B 5/1459 invasive, e.g. introduced into the body by a catheter A61B5/1464 takes precedence
• CPC Class Codes: A61B 5/1495 Calibrating or testing of in-vivo probes
• CPC Class Codes: A61B 5/6801 specially adapted to be attached to or worn on the body surface
• CPC Class Codes: A61B 5/6846 specially adapted to be brought in contact with an internal body part, i.e. invasive
• CPC Class Codes: A61B 5/7275 Determining trends in physiological measurement data; Predicting development of a medical condition based on physiological measurements, e.g. determining a risk factor
• CPC Class Codes: A61B 5/742 using visual displays A61B5/339 takes precedence
• CPC Class Codes: A61B 5/7475 User input or interface means, e.g. keyboard, pointing device, joystick
• CPC Class Codes: G01N 33/66 involving blood sugars, e.g. galactose
• CPC Class Codes: G16H 40/40 for the management of medical equipment or devices, e.g. scheduling maintenance or upgrades
• CPC Class Codes: Y10T 436/144444 Glucose

Abstract

A calibration system is disclosed for calibrating a first physiological monitoring device using a second physiological monitoring device. The first physiological monitor measures a first indication of a physiological parameter. The second physiological monitor measures a second indication of the physiological parameter. The first and second indications are used to calibrate the first physiological monitoring device.

Claims

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.