MANUAL AND AUTOMATIC PROBE CALIBRATION

• US 20120184832A1
• Filed: 03/26/2012
• Published: 07/19/2012
• Est. Priority Date: 06/07/1995
• Status: Active Grant

• Current Assignee: Masimo Corporation
• Original Assignee: Masimo Corporation
• Inventors: Diab, Mohamed Kheir, Kiani-Azarbayjany, Esmaiel, Ragsdale, Charles Robert, Lepper, James M. Jr.
• Granted Patent: US 8,781,543 B2
• Time in Patent Office: Days
• US Class Current: 600/331
• CPC Class Codes: A61B 2562/08 Sensors provided with means for identification, e.g. barcodes or memory chips
• 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 5/02427 Details of sensor
• 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 5/6826 Finger
• CPC Class Codes: A61B 5/6838 Clamps or clips
• CPC Class Codes: G01J 2003/2866 Markers; Calibrating of scan
• CPC Class Codes: G01J 3/02 Details
• CPC Class Codes: G01J 3/0254 Spectrometers, other than colorimeters, making use of an integrating sphere
• CPC Class Codes: G01J 3/027 Control of working procedures of a spectrometer; Failure detection; Bandwidth calculation
• CPC Class Codes: G01J 3/0275 making use of sensor-related data, e.g. for identification of sensor parts or optical elements
• CPC Class Codes: G01J 3/0291 Housings; Spectrometer accessories; Spatial arrangement of elements, e.g. folded path arrangements
• CPC Class Codes: G01J 3/10 Arrangements of light sources specially adapted for spectrometry or colorimetry
• CPC Class Codes: G01N 2021/3144 for oxymetry
• CPC Class Codes: G01N 21/255 Details, e.g. use of specially adapted sources, lighting or optical systems
• CPC Class Codes: G01N 21/274 Calibration, base line adjustment, drift correction
• CPC Class Codes: G01N 21/31 Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry G01N21/72 takes precedence
• CPC Class Codes: G01N 21/3151 using two sources of radiation of different wavelengths G01N21/33 - G01N21/39 take precedence
• CPC Class Codes: G01N 21/39 using tunable lasers
• CPC Class Codes: G01N 2201/0627 : Use of several LED's for spectral resolution

Abstract

Embodiments of the present disclosure include an optical probe capable of communicating identification information to a patient monitor in addition to signals indicative of intensities of light after attenuation by body tissue. The identification information may indicate operating wavelengths of light sources, indicate a type of probe, such as, for example, that the probe is an adult probe, a pediatric probe, a neonatal probe, a disposable probe, a reusable probe, or the like. The information could also be utilized for security purposes, such as, for example, to ensure that the probe is configured properly for the oximeter, to indicate that the probe is from an authorized supplier, or the like.

Claims

1. In a pulse oximetry system which uses interchangeable sensors having a plurality of light emitting devices, a method of identifying information about the sensor, the method comprising:

determining operating characteristics of a sensor;

coding the operating characteristics on a semiconductor device housed in the sensor; and

reading the coded operating characteristics from the sensor onto a patient monitoring device.

2. The method of claim 1, where in the operating characteristics indicates a type of sensor.

3. The method of claim 1, wherein operating characteristics comprises calibration data.

4. The method of claim 1, wherein operating characteristics comprises security information.

5. A disposable optical sensor configured to be used in a physiological monitoring system, the sensor comprising:

a first light emitting device;

a second light emitting device;

a detector configured to detect light produced by the first and second light emitting devices after attenuation by patient tissue;

a semiconductor device housing predetermined unique operating characteristics of the first and second light emitting devices; and

a connector configured to connect to a patient monitoring device and allow the patient monitoring device to read information from the semiconductor device.

6. The method of claim 5, where in the operating characteristics indicates a type of sensor.

7. The method of claim 5, wherein operating characteristics comprises calibration data.

8. The method of claim 5, wherein operating characteristics comprises security information.