Low-noise optical probes for reducing light piping
First Claim
1. A method of reducing light from at least one emitter which reaches a detector without non-reflectively passing through a medium, the method comprising:
- providing a disposable tape adapted to position at least one emitter and a detector on opposite sides of a measurement site such that light from the at least one emitter is transmitted through the measurement site to the detector; and
including a light piping barrier with the disposable tape adapted to reduce the light from the at least one emitter which reaches the detector without first being transmitted through the measurement site.
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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 minimize light piping effects. Furthermore, a flex circuit acts as a spring to absorb shock which may misalign the emitter and detector. One embodiment of the adult probe includes a cushioning pocket formed for a fingertip to align the probe and to absorb motion of the probe due to contact. The neonatal probe is formed with a unique V-configuration which provides multiple advantages.
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Citations
6 Claims
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1. A method of reducing light from at least one emitter which reaches a detector without non-reflectively passing through a medium, the method comprising:
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providing a disposable tape adapted to position at least one emitter and a detector on opposite sides of a measurement site such that light from the at least one emitter is transmitted through the measurement site to the detector; and
including a light piping barrier with the disposable tape adapted to reduce the light from the at least one emitter which reaches the detector without first being transmitted through the measurement site. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification