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Low-noise optical probes for reducing ambient noise

DC
  • US 8,229,533 B2
  • Filed: 01/25/2012
  • Issued: 07/24/2012
  • Est. Priority Date: 03/21/1991
  • Status: Expired due to Fees
First Claim
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1. A disposable optical probe comprising:

  • a light source;

    a detector configured to detect light from said light source after attenuation by patient tissue;

    a conductive detector shield, the detector shield surrounding only the detector without covering at least a portion of a face of the detector so that light from the light source is allowed to reach the detector for detection, the conductive detector shield configured to reduce an effect of electromagnetic noise on said detector;

    a base material layer;

    a face material layer, the face material and the base material cooperating to sandwich and hold the light source, the detector and the conductive detector shield;

    a non-grounded ambient light noise blocking element configured to block ambient light noise from the detector, the ambient light noise blocking element cooperating with at least one of the base and face material layers; and

    a disposable flexible attachment mechanism comprising a soft spongy wrap configured to wrap the measurement site.

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