Method And Apparatus For Optical Filtering Of A Broadband Emitter In A Medical Sensor
First Claim
Patent Images
1. A physiological sensor comprising:
- a broadband light emitter adapted to transmit light across a range of wavelengths;
an optical filter associated with the broadband emitter, wherein the optical filter is adapted to substantially pass light transmitted from the broadband light emitter at a specific wavelength or at a subset of the range of wavelengths through the optical filter and to substantially block light at all other wavelengths from passing through the optical filter; and
a light detector adapted to receive the light passed through the optical filter.
2 Assignments
0 Petitions
Accused Products
Abstract
A system and method for determining physiological parameters of a patient based on light transmitted through the patient. The light may be transmitted via a broadband light source and received by a detector The light may also be optically filtered by an optical filter of either the light source or the detector. Based on the filter, specific wavelengths of light are received by the detector for use in monitoring the physiological parameters of the patient.
143 Citations
18 Claims
-
1. A physiological sensor comprising:
-
a broadband light emitter adapted to transmit light across a range of wavelengths; an optical filter associated with the broadband emitter, wherein the optical filter is adapted to substantially pass light transmitted from the broadband light emitter at a specific wavelength or at a subset of the range of wavelengths through the optical filter and to substantially block light at all other wavelengths from passing through the optical filter; and a light detector adapted to receive the light passed through the optical filter. - View Dependent Claims (2, 3, 4, 5, 6)
-
-
7. A pulse oximetry system comprising:
-
a pulse oximetry monitor; and a sensor assembly configured to be coupled to the monitor, the sensor assembly comprising; a broadband light emitter adapted to transmit light across a range of wavelengths; a plurality of light detectors adapted to receive the light from the broadband emitter; and a plurality of optical filters, wherein each of the plurality of optical filters is associated with a single one of the plurality of light detectors, and wherein each of the plurality of optical filters is adapted to substantially pass light transmitted from the broadband light emitter at a specific wavelength or at a subset of the range of wavelengths to the associated single one of the plurality of light detectors and to substantially block light at all other wavelengths from the associated single one of the plurality of light detectors. - View Dependent Claims (8, 9, 10, 11, 12)
-
-
13. A method comprising:
-
transmitting light with a plurality of wavelengths via a broadband light emitter; filtering the transmitted light via an optical filter adapted to pass light at a specific wavelength or at a subset of the range of wavelengths and to substantially block light at all other wavelengths from passing through the optical filter to generate filtered light; receiving the filtered light at a light detector; and calculating physiological parameters based on the filtered light. - View Dependent Claims (14, 15, 16, 17, 18)
-
Specification