Low-noise optical probes for reducing ambient noise
First Claim
Patent Images
1. A disposable optical probe comprising:
- an disposable adhesive base material;
a disposable face material;
a circuit assembly, at least a portion of which is fixedly attached above said base material and below said face material, said circuit assembly including an emitter which transmits optical radiation into a medium and a detector receives said optical radiation attenuated by said medium, wherein said base material is adapted to removably attach said circuit assembly to a medium; and
a shield, at least a portion of which is positioned above said detector.
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Accused Products
Abstract
An optical probe, which is particularly suited to reduce noise in measurements taken on an easily compressible material, such as a finger, a toe, a forehead, an earlobe, or a lip, measures characteristics of the material. A neonatal and adult disposable embodiment of the probe include adhesive coated surfaces to securely affix the probe onto the patient. In addition, the surface of the probe is specially constructed to reduce the effect of ambient noise.
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Citations
43 Claims
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1. A disposable optical probe comprising:
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an disposable adhesive base material;
a disposable face material;
a circuit assembly, at least a portion of which is fixedly attached above said base material and below said face material, said circuit assembly including an emitter which transmits optical radiation into a medium and a detector receives said optical radiation attenuated by said medium, wherein said base material is adapted to removably attach said circuit assembly to a medium; and
a shield, at least a portion of which is positioned above said detector. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method of shielding a detector of a disposable optical probe from ambient light, the method comprising:
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providing a disposable detector configured to detect attenuated optical radiation;
providing disposable light blocking material proximate to said detector to limit degradation of said attenuated optical radiation, wherein said degradation is caused by noise; and
providing a disposable optical probe by fixedly attaching said detector, said light blocking material, and an emitter between a disposable adhesive first tape layer and a disposable second tape layer, wherein emitter is configured to transmit optical radiation into a medium and said detector is adapted to receive said attenuated optical radiation from said medium when said first tape layer removably attaches the disposable optical probe to the medium. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19)
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20. A disposable optical probe comprising:
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a disposable electronic circuit comprising at least one emitter and a detector;
a disposable noise blocking layer; and
a disposable flexible attachment mechanism adhesively housing said electronic circuit proximate to said noise blocking layer so as to materially reduce an effect of noise on said detector, wherein said attachment mechanism is configured to removably attach said electronic circuit to a measurement site. - View Dependent Claims (21, 22, 23, 24, 25, 26)
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27. A disposable optical probe comprising:
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an adhesive base material;
a circuit assembly having an emitter and a detector, said assembly fixedly attached to said base material, said base material adapted to removably attach said circuit assembly to a medium so that said emitter transmits optical radiation into said medium and said detector receives said optical radiation attenuated by said medium; and
a cover being opaque to ambient light, said cover placed over said detector and attached to said base material so as to shield said detector from ambient light. - View Dependent Claims (28, 29, 30, 31)
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32. A disposable optical probe method comprising the steps of:
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fixedly attaching a detector and an emitter to an adhesive base layer;
removably attaching said adhesive base layer to a medium so as to transmit optical radiation from said emitter into said medium and to receive at said detector a corresponding attenuated optical radiation from said medium;
generating a signal from said detector in response to said attenuated optical radiation; and
shielding said detector with a cover that is opaque to ambient light placed over said detector so as to limit degradation of said signal due to ambient light. - View Dependent Claims (33)
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34. A disposable optical probe comprising:
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an adhesive first layer;
a cover adapted to be opaque to ambient light;
a circuit assembly having a detector and an emitter disposed on a flexible substrate, said circuit assembly fixedly attached between said cover and said first layer;
said first layer configured to removably affix said circuit assembly to a medium so that said emitter and said detector measure a characteristic of said medium; and
said cover placed over said detector so as to shield said detector from ambient light. - View Dependent Claims (35, 36, 37, 38)
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39. A disposable optical probe comprising:
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a flexible substrate having a first side and a second side and defining an LED aperture and a detector aperture, said front side supporting an LED and a detector adapted so that, when said substrate is attached to a tissue site, said LED transmits optical radiation through said LED aperture and into said tissue site and said detector receives optical radiation through said detector aperture from said tissue site;
an opaque cover disposed proximate said front side and fitted over said detector so as to limit detector signal degradation caused by ambient light; and
a base layer having a back side and a front side, each of said sides coated with adhesive so that said front side is fixedly attached to said substrate and said back side is adapted to removably attach said substrate to said tissue site, said base layer transparent to the wavelengths of said LED.
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40. The disposable optical probe according to claim 49, further comprising a non-woven, flexible face stock disposed over at least a portion of said cover so as to hold said cover in place.
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41. A disposable optical probe comprising:
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a flexible substrate having a first side and a second side;
a circuit assembly disposed on said first side;
a base layer disposed on said second side; and
an opaque cover located proximate said first side and distal said second side, said cover disposed over a detector portion of said circuit assembly. - View Dependent Claims (42)
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43. A disposable oximeter probe, comprising:
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means for detecting attenuated optical radiation;
means proximate to said means for detecting, for limiting degradation of said attenuated optical radiation, wherein said degradation is caused by ambient light; and
means for fixedly attaching said means for detecting, said means proximate to said means for detecting, and means for emitting between an adhesive first tape layer and a second tape layer, wherein said first tape layer is adapted to removably attach to a medium so as to transmit optical radiation from said means for emitting into said medium and to receive at said means for detecting said attenuated optical radiation from said medium.
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Specification