Method and circuit for storing and providing historical physiological data

• US 20070043278A1
• Filed: 06/02/2006
• Published: 02/22/2007
• Est. Priority Date: 08/31/2000
• Status: Active Grant

• Current Assignee: Covidien LP (Medtronic Plc)
• Original Assignee: Nellcor Puritan Bennett Incorporated (Medtronic Plc)
• Inventors: Mannheimer, Paul, Fein, Michael
• Granted Patent: US 8,112,137 B2
• Time in Patent Office: Days
• US Class Current: 600/323
• CPC Class Codes: A61B 2562/085 combined with means for recording calibration data
• CPC Class Codes: A61B 5/0205 Simultaneously evaluating both cardiovascular conditions and different types of body conditions, e.g. heart and respiratory condition
• CPC Class Codes: A61B 5/02055 Simultaneously evaluating both cardiovascular condition and temperature
• CPC Class Codes: A61B 5/053 Measuring electrical impedance or conductance of a portion of the body
• CPC Class Codes: A61B 5/11 Measuring movement of the entire body or parts thereof, e.g. head or hand tremor, mobility of a limb for measuring pulse A61B5/02 ;A61B5/1038 takes precedence; motion detection to correct for motion artifacts in physiological signals A61B5/721
• CPC Class Codes: A61B 5/14551 for measuring blood gases
• CPC Class Codes: A61B 5/14552 Details of sensors specially adapted therefor
• CPC Class Codes: A61B 5/1495 Calibrating or testing of in-vivo probes
• CPC Class Codes: A61B 5/7232 involving compression of the physiological signal, e.g. to extend the signal recording period
• CPC Class Codes: A61B 5/74 Details of notification to user or communication with user or patient indicating measured values G01D7/00; user input means input or output arrangements for computers G06F3/00
• CPC Class Codes: G01D 18/00 Testing or calibrating apparatus or arrangements provided for in groups G01D1/00 - G01D15/00
• CPC Class Codes: Y10S 323/911 Medical electronics

Abstract

Embodiments of the present invention include systems and methods that relate to pulse oximetry. Specifically, one embodiment includes an oximeter sensor comprising a light emitting element configured to emit light, a light detector configured to detect the light, and a memory storing values of skin temperature at which a motion signal algorithm can be accurately utilized.

Claims

1. An oximeter sensor, comprising:

a light emitting element configured to emit light;

a light detector configured to detect the light; and

a memory storing values of skin temperature at which a motion signal algorithm can be accurately utilized.

2. The oximeter sensor of claim 1, comprising a temperature monitor configured to measure a patient'"'"'s skin temperature for comparison with the stored values of skin temperature.

3. A method of manufacturing an oximeter sensor, comprising:

providing a light emitting element for the oximeter sensor, the light emitting element configured to project light;

providing a light detector for the oximeter sensor, the light detector configured to detect the light;

providing a memory for the oximeter sensor; and

storing in the memory a value of skin temperature at which a motion signal algorithm can be accurately utilized.

4. The method of claim 3, comprising providing a temperature monitor configured to measure a patient'"'"'s skin temperature for comparison with the stored values of skin temperature.

5. An oximeter system, comprising:

an oximeter sensor, comprising;

a light emitting element configured to emit light;

a light detector configured to detect the light; and

a memory storing a value of skin temperature at which a motion signal algorithm can be accurately utilized; and

an oximeter monitor, comprising;

a drive circuit configured to provide signals to circuitry of the oximeter sensor; and

a receiving circuit configured to receive data including the value of skin temperature from the oximeter sensor for comparison with a measured value of skin temperature.

6. The system claim 5, comprising a temperature monitor configured to measure a patient'"'"'s skin temperature.

7. An oximeter monitor, comprising:

a drive circuit configured to provide signals to circuitry of an oximeter sensor; and

a circuit configured to receive from a memory of the oximeter sensor a value of skin temperature at which a motion signal algorithm can be accurately utilized.

8. The monitor of claim 7, comprising a read circuit configured to receive a temperature reading from a thermometer of the oximeter sensor.

9. A method of monitor operation, comprising:

providing signals to circuitry of an oximeter sensor; and

receiving information from a memory of the oximeter sensor, the information comprising a value of skin temperature at which a motion signal algorithm can be accurately utilized from a memory of the oximeter sensor.

10. A method of operating an oximeter sensor, comprising:

projecting light from a light emitting element;

detecting the light with a light detector; and

storing a value of skin temperature at which a motion signal algorithm can be accurately utilized in a memory.

11. The method of claim 10, comprising measuring an actual skin temperature of a patient with a thermometer.