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METHOD FOR SPECTROPHOTOMETRIC BLOOD OXYGENATION MONITORING

  • US 20150025344A1
  • Filed: 07/18/2014
  • Published: 01/22/2015
  • Est. Priority Date: 07/18/2013
  • Status: Active Grant
First Claim
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1. A method for non-invasively determining a blood oxygen parameter value of a subject'"'"'s tissue, comprising the steps of:

  • providing a spectrophotometric sensor that includes a processing portion and at least one transducer, which transducer is operable to transmit light at predetermined wavelengths into the subject'"'"'s tissue, and to sense the transmitted light;

    detecting at least a portion of the transmitted light after passage through the subject'"'"'s tissue using the transducer, and producing initial signal data from the light sensed;

    using the processing portion to;

    determine a value representative of an attenuation of at least one of the predetermined wavelengths of light detected using the initial signal data; and

    determine whether the representative attenuation value is outside a predefined range of attenuation values; and

    determine the blood oxygen parameter value using a first interrogation setting if the representative attenuation value is outside the predefined range of attenuation values, or using an alternate interrogation setting if the representative attenuation value is within the predefined range of attenuation values.

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