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Surgery > Diagnostic Testing > Measuring Or Detecting Nonradioactive Constituent Of Body Liquid By Means Placed Against Or In Body Throughout Test > Infrared, Visible Light, Or Ultraviolet Radiation Directed On Or Through Body Or Constituent Released Therefrom > Determining Blood Constituent > Oxygen Saturation, E.g., Oximeter Oxygen Saturation, E.g., OximeterOxygen Saturation, E.g., Oximeter patent applications listed are from June 2005 to current and include Date, Patent Application Number, Patent Title, Patent Abstract summary and are linked to the corresponding patent application page.12/28/06 - 20060293574 - Separating oximeter signal components based on color A component of interest of an oximeter detector signal is distinguished from an interfering component based on a color difference between the components. The component of interest may be a pulsatile signal component, a baseline signal component such as a respiratory signal, or an artifact signal. The color difference between ... 12/21/06 - 20060287588 - Signal processing method, and pulse photometer using the method A pulse photometer adapted to observe a pulse wave of a living body is disclosed. A light emitter is adapted to irradiate the living body with a first light beam having a first wavelength and a second light beam having a second wavelength which is different from the first wavelength. ... 12/21/06 - 20060287587 - Signal processing method, and pulse photometer using the method A pulse photometer adapted to observe a pulse wave of a living body is disclosed. A light emitter is adapted to irradiate the living body with a first light beam having a first wavelength and a second light beam having a second wavelength which is different from the first wavelength. ... 12/14/06 - 20060281983 - Physiological monitor A patient monitor has multiple sensors adapted to attach to tissue sites of a living subject. The sensors generate sensor signals that are responsive to at least two wavelengths of optical radiation after attenuation by pulsatile blood within the tissue sites. A patient monitor uses the sensor signals to determine ... 11/30/06 - 20060270921 - Sine saturation transform A transform for determining a physiological measurement is disclosed. The transform determines a basis function index from a physiological signal obtained through a physiological sensor. A basis function waveform is generated based on basis function index. The basis function waveform is then used to determine an optimized basis function waveform. ... 11/30/06 - 20060270920 - Physiological monitor A patient monitor has multiple sensors adapted to attach to tissue sites of a living subject. The sensors generate sensor signals that are responsive to at least two wavelengths of optical radiation after attenuation by pulsatile blood within the tissue sites. Multiple data channels and associated quality parameters are derived ... 11/23/06 - 20060264720 - Switch-mode oximeter led drive with a single inductor A light emitter drive circuit for an oximeter which utilizes a single inductor for driving multiple light emitters. The inductor is connected to a switching circuit to multiple energy storage circuits, such as capacitors. These are alternately charged up, using the same inductor. Subsequently, the capacitors are alternatively discharged for ... 11/16/06 - 20060258926 - Systems and methods for acquiring calibration data usable in a pulse oximeter The present disclosure includes a pulse oximeter attachment having an accessible memory. In one embodiment, the pulse oximeter attachment stores calibration data, such as, for example, calibration data associated with a type of a sensor, a calibration curve, or the like. The calibration data is used to calculate physiological parameters ... 11/16/06 - 20060258925 - Physiological monitor A patient monitor has multiple sensors adapted to attach to tissue sites of a living subject. The sensors generate sensor signals that are responsive to at least two wavelengths of optical radiation after attenuation by pulsatile blood within the tissue sites. A patient monitor uses the signals to determine if ... 11/16/06 - 20060258924 - Physiological monitor A patient monitor has multiple sensors adapted to attach to tissue sites of a living subject. The sensors generate sensor signals that are responsive to at least two wavelengths of optical radiation after attenuation by pulsatile blood within the tissue sites. A patient monitor uses the plurality of signals to ... 11/16/06 - 20060258923 - Physiological monitor A patient monitor has multiple sensors adapted to attach to tissue sites of a living subject. The sensors generate sensor signals that are responsive to at least two wavelengths of optical radiation after attenuation by pulsatile blood within the tissue sites. ... 11/16/06 - 20060258922 - Variable aperture sensor A variable aperture sensor has a first jaw and a second jaw that are rotatably attached. An emitter is disposed in the first jaw, and a detector is disposed in the second jaw. The jaws are adapted to attach to a tissue site so that the emitter transmits optical radiation ... 11/16/06 - 20060258921 - Method of analyzing and processing signals A physiological measurement system is disclosed which can take a pulse oximetry signal such as a photoplethysmogram from a patient and then analyse the signal to measure physiological parameters including respiration, pulse, oxygen saturation and movement The system can be used as a general monitor, or more specifically, to for ... 11/09/06 - 20060253009 - System and method for providing bradycardia therapy by implantable device in presence of system faults A system and method is disclosed by which an implantable cardiac device may deliver bradycardia therapy in the event of a system fault. A hardware-based safety core provides the logic circuitry for delivering bradycardia therapy in the form of synchronous pacing in the event of a fault which disables operation ... 11/02/06 - 20060247506 - Method and apparatus for noninvasively monitoring parameters of a region of interest in a human body A method and system for noninvasive monitoring of at least one parameter of a region of interest in a human body. The system comprises a measurement unit and a control unit. The measurement unit comprises an optical unit having an illumination assembly (101A) and a light detection assembly (101B) to ... 10/26/06 - 20060241364 - System and method for imaging the reflectance of a substrate The present application discloses a system and method for the comprehensive monitoring of the microcirculation in order to assess the ultimate efficacy of the cardiovascular system in delivering adequate amounts of oxygen to the organ cells. The system utilizes reflectance avoidance by reflectance filtering, such as OPS imaging or Mainstream ... 10/26/06 - 20060241363 - Multiple wavelength sensor drivers A cable is capable of communicating signals between a monitor and a physiological sensor. The monitor is capable of activating individual light emitters of an emitter array arranged in an electrical grid by driving at least one of row drive lines and at least one of column drive lines of ... 10/12/06 - 20060229511 - Oximeter sensor with digital memory recording sensor data Embodiments of the present invention include systems and methods that relate to a sensor with memory. Specifically, one embodiment includes a method of sensor operation, comprising emitting light from a light emitting element of the sensor, detecting the light with a light detecting element of the sensor, storing sensor model ... 10/12/06 - 20060229510 - Oximeter sensor with digital memory recording sensor data Embodiments of the present invention include systems and methods that relate to a sensor with memory. Specifically, one embodiment includes a sensor, comprising a light emitting element configured to emit light, a light detecting element configured to detect the light, and a memory storing data corresponding to algorithms used by ... 10/05/06 - 20060224059 - Method and circuit for storing and providing historical physiological data Embodiments of the present invention relate to a sensor for facilitating detection of a physiological characteristic of a patient. Specifically, one embodiment includes a detector configured to obtain signals from the patient, the signals being indicative of the physiological characteristic and to send the signals to a monitor, and a ... 10/05/06 - 20060224058 - Pulse oximetry sensor and technique for using the same on a distal region of a patient's digit A sensor may be placed on a distal portion of a patient's finger or toe to obtain pulse oximetry measurements. The distal portion of a digit contains few if any large vascular structures that could adversely affect pulse oximetry measurements, but the distal portion does contain microvasculature that carries arterial ... 09/28/06 - 20060217608 - Oximeter sensor with digital memory encoding sensor data Embodiments of the present invention include systems and methods that relate to a sensor with memory. Specifically, one embodiment includes a method of sensor operation, comprising emitting light from a light emitting element of the sensor, detecting the light with a light detecting element of the sensor, and providing a ... 09/28/06 - 20060217607 - Oximeter sensor with digital memory recording sensor data Embodiments of the present invention include systems and methods that relate to a sensor with memory. Specifically, one embodiment includes a method of sensor operation, comprising a light emitting element configured to emit light, a light detecting element configured to detect the light, and a memory storing a language code ... 09/28/06 - 20060217606 - Oximeter sensor with digital memory encoding sensor data Embodiments of the present invention include systems and methods that relate to a sensor with memory. Specifically, one embodiment includes a sensor comprising a light emitting element configured to emit light, a light detecting element configured to detect the light, and a memory storing at least one patient-specific parameter, the ... 09/28/06 - 20060217605 - Oximeter sensor with digital memory encoding sensor data Embodiments of the present invention include systems and methods that relate to a sensor with memory. Specifically, one embodiment includes a sensor comprising a light emitting element configured to emit light, a light detecting element configured to detect the light, and a memory storing sensor model identification data, the memory ... 09/28/06 - 20060217604 - Oximeter sensor with digital memory encoding sensor data Embodiments of the present invention include systems and methods that relate to a sensor with memory. Specifically, one embodiment includes a sensor comprising a light emitting element configured to emit light, a light detecting element configured to detect the light, and a memory storing a manufacturer identification, the memory providing ... 09/28/06 - 20060217603 - Method for acquiring respiratory disease-related analysis data, oximeter system, operation program product for oximeter system, oximeter, and oxygen supply system An oximeter system includes a blood oxygen saturation detector for detecting blood oxygen saturation information of a subject, a body motion detector for detecting body motion information of the subject, a controller for causing the blood oxygen saturation detector to acquire the blood oxygen saturation information, and causing the body ... 09/21/06 - 20060211929 - Pulse oximeter and sensor optimized for low saturation Embodiments of the present invention relate to a pulse oximeter sensor. Specifically, embodiments of the present invention include emitting infrared light from a first light source into tissue, the infrared light including an infrared wavelength spectrum useful for measuring oxygen saturation in a patient with high saturation, emitting far red ... 09/14/06 - 20060206020 - Method and device for detecting fault in a blood oxygen sensor A device for measuring blood oxygen content comprises a blood oxygen sensor interface, a signal processing unit, and a plurality of voltage sampling points. A method for detecting fault in a blood oxygen sensor comprises the steps of: connecting the blood oxygen sensor to the signal processing unit; providing voltage ... 09/14/06 - 20060206019 - Method for measuring blood oxygen content under low perfusion A method for measuring blood oxygen content under low perfusion, which is used in a device for measuring blood oxygen content, includes the steps of: initializing the device that is applied with power, collecting and processing data with a driving circuit of light emitting device, a bias circuit, a gain ... 09/07/06 - 20060200015 - Method for enhancing pulse oximetry calculations in the presence of correlated artifacts A method for determining a physiological parameter in the presence of correlated artifact, including obtaining two digital waveforms, x and y, the waveforms being representative of the absorption of two wavelengths of electromagnetic energy received from a blood-perfused tissue, and where each of the waveforms has a component corresponding to ... 08/31/06 - 20060195025 - Pulse oximetry data confidence indicator According to some embodiments of the present invention, a display is used to show an indication of the signal's quality. This indication of the signal's quality may be provided in a number of ways, including one or more audio and/or visual alarms. ... 08/31/06 - 20060195024 - Laser diode optical transducer assembly for non-invasive spectrophotometric blood oxygenation A non-invasive near infrared spectrophotometric monitoring transducer assembly includes a housing member, which is adhered directly on a patient's skin. The housing member contains a prism coupled to a flexible and lightweight single core optical light guide, which provides a means of transferring narrow spectral bandwidth light from multiple distant ... 08/24/06 - 20060189860 - Near infrared spectroscopy device with reusable portion A NIRS sensor device for brain monitoring is small in size, provides reliable attachment to a patient, blocks ambient light, is easy to use, is hygienic, and supports data integration with surgical and monitoring systems. The sensor device is coupled to a remote near infrared light source via a hybrid ... 08/24/06 - 20060189859 - Pulse oximetry sensor adapter An adapter allows the interconnection of a sensor originating from one manufacturer to be coupled with conventionally incompatible monitors originating from other manufacturers to form a properly functioning pulse oximetry system. The adapter matches a sensor driver in a monitor to the current requirements and light source configuration of a ... 08/03/06 - 20060173258 - Apparatus and method for measuring transit time of oxygen in blood In order to measure a transit time of oxygen in blood, at least one sensor is attached to at least one prescribed position on a subject. The sensor is adapted to detect a light absorption of arterial blood at the prescribed position. An oxygen saturation of the arterial blood at ... 08/03/06 - 20060173257 - Sleep evaluation method, sleep evaluation system, operation program for sleep evaluation system, pulse oximeter, and sleep support system Measurement is made about a necessary evaluation parameter of a subject, the parameter being variable due to sleep apnea of the subject. A body position of the subject is detected in terms of angle information. The parameter measurement and the body angle detection are executed at a predetermined sampling frequency. ... 07/27/06 - 20060167351 - Sensor system with memory and method of using same A method of using an oximeter sensor assembly including the steps of detecting light from a light emitting element and storing digital data in a memory associated with the sensor assembly. The stored digital data includes coefficients for use by an oximeter monitor coupled to the sensor assembly to calculate ... 07/06/06 - 20060149144 - System and method for automatic detection of a plurality of spo2 time series pattern types The disclosed embodiments relate to pulse oximetry. An exemplary pulse oximeter comprises a probe that is adapted to be attached to a body part of a patient to create a signal indicative of an oxygen saturation of blood of the patient, and a processor that is adapted to receive the ... 06/15/06 - 20060129039 - Apparatus for improved pulse oximetry measurement An apparatus for measuring the blood oxygen level of a patient is disclosed. In one embodiment, the apparatus includes a housing having an interior surface of non-reflective material substantially surrounding an interior. A cooperating light source and detector are operatively positioned proximate the interior surface so as to emit and ... 06/08/06 - 20060122475 - Method and apparatus for noninvasively monitoring parameters of a region of interest in a human body A method and system are presented for use in noninvasive monitoring at least one parameter of a region of interest in a human body. The system comprises a measurement unit and a control unit. The measurement unit comprises an optical unit having an illumination assembly configured to define at least ... 05/18/06 - 20060106293 - Optical imaging and oximetry of tissue Systems and methods are disclosed for detecting at least one region of a sample having an absorption level different from a background level of absorption in the sample by obtaining thicknesses of the sample and intensities of light transmitted through the sample at a plurality of locations. The system includes ... 05/04/06 - 20060094943 - Use of time indexed plethysmographic spectral data in assessing saturation estimation validity Detector signals in a pulse oximeter are analyzed to determine a quality of the signals in relation to desired information content or artifact content. The analysis involves performing a transform on a signal to obtain frequency related information and analyzing the frequency related information to obtain a value independent of ... 04/27/06 - 20060089549 - Signal processing apparatus The present invention involves a method and an apparatus for analyzing measured signals, including the determination of a measurement of correlation in the measured signals during a calculation of a physiological parameter of a monitored patient. Use of this invention is described in particular detail with respect to blood oximetry ... 03/23/06 - 20060063995 - Optical measurement of tissue blood flow, hemodynamics and oxygenation An embodiment of the invention includes a device, system and method for determining the characteristics of deep tissue. The novel method includes measuring blood flow rate and oxygenation characteristics of the tissue, and determining oxygen metabolism of the tissue as a function of the measure blood flow rate and measure ... 03/23/06 - 20060063994 - Method for the spectroscopic determination of the oxygen saturation of blood in the presence of optical disturbance varibles The invention is directed to a method for the spectrometric determination of the oxygen saturation of blood in the presence of optical disturbance variables in which transmission measurements and reflection measurements are carried out in at least two wavelengths that are isosbestic for hemoglobin and oxyhemoglobin, and at least one ... 02/09/06 - 20060030765 - Oximeter sensor with digital memory encoding patient data The present invention provides a memory chip for use in an oximeter sensor, or an associated adapter or connector circuit. The memory chip allows the storing of patient related data, such as patient trending data or a patient ID, to provide enhanced capabilities for the oximeter sensor. In addition to ... 02/09/06 - 20060030764 - Method and circuit for indicating quality and accuracy of physiological measurements Sensors and monitors for a physiological monitoring system having capability to indicate an accuracy of an estimated physiological condition. The sensor senses at least one physiological characteristic of a patient and is connectable to a monitor that estimates the physiological condition from signals detected by the sensor. The sensor includes ... 02/09/06 - 20060030763 - Pulse oximeter sensor with piece-wise function A memory in a sensor is used to store multiple coefficients for a physiological parameter. In one embodiment, not only are the sensor's specific calibration coefficients stored in a memory in the sensor for the formula to determine oxygen saturation, but multiple sets of coefficients are stored. The multiple sets ... 02/09/06 - 20060030762 - Oximeter sensor with digital memory encoding patient data The present invention provides a memory chip for use in an oximeter sensor, or an associated adapter or connector circuit. The memory chip allows the storing of patient related data, such as patient trending data or a patient ID, to provide enhanced capabilities for the oximeter sensor. In addition to ... 02/02/06 - 20060025660 - Oximeter sensor with digital memory encoding patient data The present invention provides a memory chip for use in an oximeter sensor, or an associated adapter or connector circuit. The memory chip allows the storing of patient related data, such as patient trending data or a patient ID, to provide enhanced capabilities for the oximeter sensor. In addition to ... 01/26/06 - 20060020185 - Cyanotic infant sensor A pulse oximetry sensor comprises emitters configured to transmit light having a plurality of wavelengths into a fleshy medium. A detector is responsive to the emitted light after absorption by constituents of pulsatile blood flowing within the medium so as to generate intensity signals. A sensor head has a light ... 01/12/06 - 20060009688 - Multi-wavelength physiological monitor A physiological monitor for determining blood oxygen saturation of a medical patient includes a sensor, a signal processor and a display. The sensor includes at least three light emitting diodes. Each light emitting diode is adapted to emit light of a different wavelength. The sensor also includes a detector, where ... 01/12/06 - 20060009687 - Physiological assessment system A physiological assessment system comprises a sensor and first and second processors. The sensor is adapted to generate a signal responsive to a living organism. The first processor is configured to derive a measured parameter from the sensor signal. The second processor is configured to analyze nonlinear dynamics of the ... 12/15/05 - 20050277818 - Optimized wavelength gap for improved sto2 measurement A method and system for producing improved more accurate measurements of oxyhemoglobin levels in tissue when measured using near infrared spectroscopy (NIRS). Light sources and processing methods are selected to such that the effects of a confounding chromophore in the tissue under study are minimized. ... 12/08/05 - 20050272988 - Brain function measurement device, brain function measurement method, and brain function measurement program In addition to irradiating examination light toward the inside of the bead of the subject and detecting the examination light reflected from the head: structural data indicating the head structure, wherein the head is divided into multiple materials and the various materials are further divided into multiple elements, are stored ... 11/17/05 - 20050256385 - Signal processing apparatus The present invention involves a method and an apparatus for analyzing measured signals, including the determination of a measurement of correlation in the measured signals during a calculation of a physiological parameter of a monitored patient. Use of this invention is described in particular detail with respect to blood oximetry ... 10/27/05 - 20050240091 - Pulse oximetry relational alarm system for early recognition of instability and catastrophic occurrences A relational pulse oximetry alarm system and method is presented for earlier identification of the occurrence of an adverse clinical event. The system includes a pulse oximeter based microprocessor alarm system which provides an alarm based on a relational conformation of a plurality of time series and further based on ... 10/20/05 - 20050234317 - Low power and personal pulse oximetry systems Personal pulse oximetry systems and methods are disclosed which provide monitoring, powering, and wireless communications for measurement of an individual's blood oxygen levels in medical, military, or athletic applications. In an embodiment, at least one intensity signals is disabled so as to reduce power consumption. ... 10/13/05 - 20050228248 - Clip-type sensor having integrated biasing and cushioning means A sensor device for non-invasively measuring a physiological parameter of a patient, such as a pulse oximeter for measuring blood oxygen levels of a patient. In a preferred embodiment, the device comprises a first device portion and a second device portion pivotally connected to the first device portion to define ... 10/06/05 - 20050222503 - Apparatus and method for the treatment of sleep apnea, arrhythmia, and partial epilepsy An apparatus to detect the onset of sleep apnea, and to provide an automated way to awaken the sleeping patient at the onset of sleep apnea. The apparatus may also contain a recording device or computer that captures blood oxygen levels and pulse rates throughout the period of sleep, and ... 10/06/05 - 20050222502 - Methods and apparatus for patient monitoring A respiratory monitoring apparatus that detects changes in physiological parameters relevant to respiration, including blood oxygen and blood volume, using near infrared spectroscopy. Methods for diagnosing respiratory-related events including hypoxia index, hypopnea, arousal, tissue oxygen debt, and respiratory muscle events or distinguishing central from obstructive sleep apnea are also disclosed. ... 09/22/05 - 20050209517 - Signal processing apparatus The present invention involves a method and an apparatus for analyzing measured signals, including the determination of a measurement of correlation in the measured signals during a calculation of a physiological parameter of a monitored patient. Use of this invention is described in particular detail with respect to blood oximetry ... 09/22/05 - 20050209516 - Vital signs probe A combination of a patient core temperature sensor and the dual-wavelength optical sensors in an ear probe or a body surface probe improves performance and allows for accurate computation of various vital signs from the photo-plethysmographic signal, such as arterial blood oxygenation (pulse oximetry), blood pressure, and others. A core ... 09/15/05 - 20050203357 - Pulse oximetry motion artifact rejection using near infrared absorption by water A method and an apparatus for measuring a physiological parameter, functioning based on obtaining a first signal derived from electromagnetic energy transmitted through a tissue portion at a first wavelength, the first signal including a signal portion corresponding with motion-related events and a signal portion corresponding with arterial pulsation events, ... 09/08/05 - 20050197551 - Stereo pulse oximeter An improved pulse oximeter provides for simultaneous, noninvasive oxygen status and photoplethysmograph measurements at both single and multiple sites. In particular, this multiple-site, multiple-parameter pulse oximeter, or “stereo pulse oximeter” simultaneously measures both arterial and venous oxygen saturation at any specific site and generates a corresponding plethysmograph waveform. A corresponding ... 09/08/05 - 20050197550 - Pulse oximetry sensor A pulse oximetry sensor has an emitter adapted to transmit optical radiation of at least two wavelengths into a tissue site and a detector adapted to receive optical radiation from the emitter after tissue site absorption. A tape assembly is adapted to attach the emitter and detector to the tissue ... 09/08/05 - 20050197549 - Selection of ensemble averaging weights for a pulse oximeter based on signal quality metrics A method and a system for ensemble averaging signals in a pulse oximeter, including receiving first and second electromagnetic radiation signals from a blood perfused tissue portion corresponding to two different wavelengths of light, obtaining an assessment of the signal quality of the electromagnetic signals, selecting weights for an ensemble ... 09/08/05 - 20050197548 - Disposable/reusable flexible sensor The present invention is directed to an improved pulse oximetry sensor device, in which the top and bottom portions of the sensor housing are affixed at a crease point, and are foldable towards each other to create an enclosure therebetween for retaining the optical elements of the device. The sensor ... 08/25/05 - 20050187450 - Led forward voltage estimation in pulse oximeter An apparatus and method for determining if a forward voltage of an LED in a pulse oximeter is within a predetermined range. This is accomplished by measuring the current through the LED, and also by knowing the duty cycle of the pulse width modulator (PWM) drive signal to the LED. ... 08/25/05 - 20050187449 - Oximeter red and ir zero calibration control A pulse oximeter with drive lines for driving red and IR LEDs, and a drive circuit for driving those drive lines. A processor controls the drive circuit using a red zero output line and an IR zero output line directly connected between the processor and the drive circuit. This allows ... 08/25/05 - 20050187448 - Oximeter ambient light cancellation A pulse oximeter method and apparatus which provides (1) a notch filter at a distance between a modulation frequency and a common multiple of commonly used power line frequencies (50, 60, 100 and 120) and also (2) a demodulation frequency greater than a highest pulse rate of a person and ... 08/25/05 - 20050187447 - Switch-mode oximeter led drive with a single inductor A light emitter drive circuit for an oximeter which utilizes a single inductor for driving multiple light emitters. The inductor is connected to a switching circuit to multiple energy storage circuits, such as capacitors. These are alternately charged up, using the same inductor. Subsequently, the capacitors are alternately discharged for ... 08/25/05 - 20050187446 - Techniques for detecting heart pulses and reducing power consumption in sensors Low power techniques for sensing cardiac pulses in a signal from a sensor are provided. A pulse detection block senses the sensor signal and determines its signal-to-noise ratio. After comparing the signal-to-noise ratio to a threshold, the drive current of light emitting elements in the sensor is dynamically adjusted to ... 08/11/05 - 20050177034 - Ear canal sensing device A sensing device is suitable for the non-invasive monitoring of physiological factors and is particularly suitable for location within the ear canal. The sensing device can be used to facilitate duplex audio communication. ... 07/07/05 - 20050148835 - Optical device A method for monitoring oxygenation of blood includes the steps of transmitting light containing a plurality of wavelengths into blood and measuring a remitted spectrum over the plurality of-wavelengths. A measured blood absorption spectrum is then calculated from the remitted spectrum and local rates of change in the measured blood ... 06/16/05 - 20050131285 - Signal component processor A signal processor generates basis functions and identifies at least one basis function component of a sensor signal in order to calculate a physiological measurement. The signal processor is advantageously applied to pulse oximetry so as to directly calculate oxygen saturation and so as to calculate a robust oxygen saturation ... 06/16/05 - 20050131284 - Characterization of moving objects in a stationary background A method and system for determination and mapping the quantity of chromophores having a distinct spectrum attached to moving objects in an spectrally rich environment that may include multiple chromophores attached to stationary objects. An area of inters is imaged at different times and different wavelengths, and the spectral properties ... 06/16/05 - 20050131283 - Method for predicting apnea-hypopnea index from overnight pulse oximetry readings The present invention provides a predictive tool for predicting Apopnea Hypopnea Index (AHI) in the diagnosis of Obstructive sleep apnea (OSA). The predictive tool is developed by recording pulse oximetry readings, obtaining delta index, oxygen saturation times and oxygen desaturation events from the oximetry readings. A multivariate non-parametric analysis and ... 06/16/05 - 20050131282 - Apparatus and method for acquiring oximetry and electrocardiogram signals A method and apparatus for acquiring pulse oximetry and electrocardiogram signals from an appendage of a patient. The apparatus can include a substrate that can be attached to the appendage of the patient, an emitter coupled to the substrate, a detector coupled to the substrate, and an electrode coupled to ... 06/09/05 - 20050124871 - Pulse oximeter with parallel saturation calculation modules A method and apparatus for reducing the effects of noise on a system for measuring physiological parameters, such as, for example, a pulse oximeter. The method and apparatus of the invention take into account the physical limitations on various physiological parameters being monitored when weighting and averaging a series of ... 06/02/05 - 20050119543 - Measurement of blood oxygen saturation Oxygenation of a subject's blood is determined by sensing an absorption spectrum of light directed either invasively or non-invasively into the blood, and then calculating an oxygenation value by evaluating a cost function of the remitted spectrum relative to at least two pre-determined reference absorption spectra representing different, known levels ... 06/02/05 - 20050119542 - Method and apparatus for determining cerebral oxygen saturation A new and improved method and apparatus for determining cerebral oxygenation. In one basic aspect, a new processing methodology for oxygenation determination, in particular cerebral oxygenation, is provided based on the apprehension and discovery that time-based photon quantity determinations of the wavelength-specific light leaving the head of the patient may ... ### FreshPatents.com Support |