Method and circuit for storing and providing historical physiological data

• US 8,095,195 B2
• Filed: 06/02/2006
• Issued: 01/10/2012
• Est. Priority Date: 08/31/2000
• Status: Active Grant

• Current Assignee: Tyco Healthcare Group LP (Medtronic Plc)
• Original Assignee: Tyco Healthcare Group LP (Medtronic Plc)
• Inventors: Mannheimer, Paul D., Fein, Michael E.
• Primary Examiner(s): WINAKUR, ERIC FRANK
• Application Number:
  US11/445,671
• Publication Number:
  US 20070043277A1
• Time in Patent Office: 2,048 Days
• Field of Search: 600/323, 600/310, 600/322
• 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 an ambient light value for comparison with a detected ambient light measurement.

Claims

1. A method of manufacturing an oximeter system, comprising:

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

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

providing a memory within the oximeter sensor;

storing an ambient light value in the memory for comparison with a detected ambient light measurement; and

providing an oximeter monitor configured to receive the ambient light value from the memory of the oximeter sensor and to adjust drive signals to circuitry of the oximeter sensor based on a comparison of the ambient light value to a detected ambient light measurement.

2. The method of claim 1, comprising storing a plurality of ambient light values in the memory, the plurality of ambient light values relating to a plurality of sensor operation alarms.

3. 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 an ambient light value for comparison with a detected ambient light measurement; and

an oximeter monitor, comprising;

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

a receiving circuit configured to receive data including the ambient light value from the oximeter sensor; and

an adjustment circuit configured to compare the ambient light value to the detected ambient light measurement and to adjust the signals based on the comparison of the ambient light value to the detected ambient light measurement.

4. The system claim 3, comprising a plurality of ambient light values stored in the memory, the plurality of ambient light values relating to a plurality of sensor operation alarm conditions.

5. A method of operating an oximeter system, comprising:

retaining an ambient light value in a memory of an oximeter sensor for comparison with a detected ambient light measurement;

providing the ambient light value in the memory of the oximeter sensor to an oximeter monitor; and

in the oximeter monitor, comparing the ambient light value and the detected ambient light measurement, and adjusting drive signals based on results from comparing the ambient light value with the detected ambient light measurement.

6. The method of claim 5, comprising storing a plurality of ambient light values in the memory, the plurality of ambient light values relating to a plurality of sensor operation alarm conditions.

7. An oximeter monitor, comprising:

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

a circuit configured to receive an ambient light value from a memory of the oximeter sensor; and

an adjustment circuit configured to compare the ambient light value to a detected ambient light measurement and to adjust the signals based on the comparison of the ambient light value to the detected ambient light measurement.

8. 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 an ambient light value;

comparing the ambient light value with a detected ambient light measurement; and

adjusting the signals based on results from comparing the ambient light value with the detected ambient light measurement.