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7613490 |
Physiological stress detector device and system
A method, system and device for measurement of a blood constituent level, including a light source, a light detector proximate an organ surface, adjustable gain amplifiers, and a...
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7606607 |
Physiological stress detector device and system
A method, system and device for measurement of a blood constituent level, including a light source, a light detector proximate an organ surface, adjustable gain amplifiers, and a...
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7603152 |
Physiological stress detector device and system
A method, system and device for measurement of a blood constituent level, including a light source, a light detector proximate an organ surface, adjustable gain amplifiers, and a...
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7590438 |
Physiological stress detector device and system
A method, system and device for measurement of a blood constituent level, including a light source, a light detector proximate an organ surface, adjustable gain amplifiers, and a...
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7541602 |
System and method for noninvasively monitoring conditions of a subject
A method and system are presented for use in determining one or more parameters of a subject. A region of interest of the subject is irradiated with acoustic tagging radiation, which comprises at...
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7457652 |
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...
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7313426 |
Apparatus for determining concentrations of light absorbing substances in blood
In an apparatus for determining a concentration of a light absorbing substance in blood, a plurality of photo emitters are adapted to emit light beams having different wavelengths toward a living...
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7257433 |
Apparatus for measuring concentration of light-absorbing substance in blood
An apparatus for measuring a concentration of a light-absorbing substance in blood is disclosed. A light emitter emits light beams to irradiate a living tissue, each of the light beams being...
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7194292 |
Simultaneous signal attenuation measurements utilizing frequency orthogonal random codes
A method for use in operating a signal attenuation measurement device used to obtain a physiological parameter of a patient and an apparatus for use in determining at least one physiological...
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7171251 |
Physiological stress detector device and system
A method, system and device for measurement of a blood constituent level, including a light source, a light detector proximate an organ surface, adjustable gain amplifiers, and a...
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7133711 |
Method and system for decomposition of multiple channel signals
A method and a system for decomposition of a multiple channel signal reflecting characteristics of a blood perfused fleshy medium is provided. This technique can be utilized for determination of at...
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RE39268 |
Simulation for pulse oximeter
A method and system for simulating living tissue which is to be monitored by a pulse oximeter that provides red and infrared light flashes, the system including structure for: converting the red...
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7062307 |
Oversampling pulse oximeter
An oversampling pulse oximeter includes an analog to digital converter with a sampling rate sufficient to take multiple samples per source cycle. In one embodiment, a pulse oximeter ( 100 )...
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7027850 |
Signal processing method and device for signal-to-noise improvement
A method and apparatus extract a signal component of a measured signal using one of two methods. If the signal component in the measured signal is a periodic signal with a certain well-defined...
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6922577 |
Optical measuring device having d.c. component elimination
An optical measuring device includes a sensor which emits light flashes toward a subject of detection with a light emitting element which is supplied with electric power from a rechargeable battery...
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6898452 |
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,...
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6839580 |
Adaptive calibration for pulse oximetry
A method for calibrating a pulse oximeter device and an apparatus incorporating the method and a system for utilizing the method. The method is based on modeling light propagation in tissue at two...
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6801799 |
Pulse oximeter and method of operation
A sensor for use in an optical measurement device and a method for non-invasive measurement of a blood parameter. The sensor includes sensor housing, a source of radiation coupled to the housing,...
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6760609 |
Adaptive calibration pulsed oximetry method and device
A method for determining an arterial blood oxygen saturation level according to this invention includes measuring the light transmittance through tissue of light of a first wavelength and a second...
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6681128 |
System for noninvasive hematocrit monitoring
A system determines heamtocrit transcutaneously and noninvasively. Disclosed are a finger clip assembly and an earlobe clip assembly, each including at least a pair of emitters and a photodiode in...
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6600940 |
Oximeter sensor with digital memory
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 different data to provide enhanced...
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6553242 |
Physiological stress detector device and method
A method and device for measurement of a level of at least one blood constituent. The device includes a light source and a light detector proximate the surface of an organ. The device also includes...
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6453184 |
Device for measuring light absorption materials in blood
A red light and an infrared light which are emitted from a light emitting portion 2 are transmitted through a fingertip 4 of a subject and are converted into electric signals by a light...
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6449501 |
Pulse oximeter with signal sonification
An improved pulse oximeter is disclosed. The pulse oximeter includes audio signal generation means, controlled by algorithms in a processing element which continuously transform the signals from...
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6397093 |
Non-invasive carboxyhemoglobin analyzer
An apparatus and method is disclosed which allows the non-invasive monitoring of a subject's carboxyhemoglobin level, thereby allowing the detection of possible carbon monoxide poisoning. The...
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6151518 |
Instrument for measuring concentrations of constituent parts of blood
A blood-constituent concentration measuring instrument capable of accurately measuring concentrations of the constituent parts of blood without invading tissue. Light source means (1) emits...
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6151107 |
Method of non-invasive determination of oxygen saturation in tissue in which blood is circulating
In a method for the non-invasive determination of the oxygen saturation in tissue supplied with blood, the tissue is irradiated with red and infrared light and the DC and AC components of the...
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6042541 |
Clamping device for a surgical retractor
A clamping device for use in a surgical retractor support includes a first clamp member for clamping a first retractor support. The first clamp member has a first opening that is disposed along a...
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5846190 |
Method of and apparatus for recognizing falsified pulse oximetry measurements
A pulse oximeter has several processing channels for measurement signals which are measured during the switched-on phase of transmission diodes and which are used to determine the oxygen saturation...
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5803910 |
Condensed oximeter system and method with noise reduction software
A compact pulse oximetry system and method which separates the combined signal into its respective AC and DC components. By separating the signal into AC and DC components, a smaller order bit A/D...
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5784151 |
Apparatus for testing a pulsed light oximeter
The invention relates to apparatus for testing a pulsed light oximeter, such as a non-invasive oximeter which emits pulses of red and infrared light. A light sensor produces an electrical pulse...
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5676141 |
Electronic processor for pulse oximeters
An apparatus for measuring the concentration of blood constituents in which the architecture of the electronic processor reduces the amount of controller processing time required for tasks such as...
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5577500 |
Condensed oximeter system with noise reduction software
A compact pulse oximetry system which separates the combined signal into its respective AC and DC components. By separating the signal into AC and DC components, a smaller order bit A/D converter...
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5448991 |
Method of measuring the oxygen saturation in pulsating blood flow
An improved pulse oximeter for the measurement of oxygen saturation in the blood, which is faster and more accurate than conventional pulse oximeter. Improved speed and accuracy is attached by...
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5431159 |
Pulse oximetry
Non-invasive oximetry wherein red and infrared light from light sources energized at different frequencies is applied to arterial blood-containing tissue of a living subject. The red and infrared...
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5385144 |
Respiration diagnosis apparatus
The object of this invention is to provide an extremely simple device to extract information to distinguish between obstructive apnea and central apnea and which performs this operation...
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5368224 |
Method for reducing ambient noise effects in electronic monitoring instruments
The present invention provides a method and apparatus for adapting to noise sources affecting a pulse oximeter. Various available frequencies are evaluated to determine their respective noise...
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5348005 |
Simulation for pulse oximeter
A method and system for simulating living tissue which is to be monitored by a pulse oximeter that provides red and infrared light flashes, the system including structure for: converting the red...
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5348004 |
Electronic processor for pulse oximeter
An electronic processor for calculating in vivo blood oxygenation concentration levels using pulsed light that eliminates both requirements for comparing photosensor signal amplitudes with...
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5337745 |
Device and method for in vivo qualitative or quantative measurement of blood chromophore concentration using blood pulse spectrophotometry
An improved spectrophotometer which noninvasively and qualitatively or quantitatively determines the concentration of light and other radiation absorbing substances in the bloodstream inside a...
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5216598 |
System for correction of trends associated with pulse wave forms in oximeters
A noninvasive optical oximeter measures oxygen saturation of arterial blood. A patient's arterial blood is illuminated with light at two different wavelengths and the intensity of the reflected...
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5094239 |
Composite signal implementation for acquiring oximetry signals
An oximeter system for measuring blood oxygen saturation using a noninvasive optical technique is disclosed. A patient's arterial blood is illuminated with light at two different wavelengths and...
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5078136 |
Method and apparatus for calculating arterial oxygen saturation based plethysmographs including transients
A method and apparatus for improving the calculation of oxygen saturation by non-invasive pulse oximeters during transient conditions. Transient conditions introduce artifactual errors into the...
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4824242 |
Non-invasive oximeter and method
The present invention relates to an oximeter for monitoring oxygen saturation of arterial blood. Light of two wavelengths is transmitted through a specimen. Detectors measure the attenuation of...
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4819752 |
Blood constituent measuring device and method
A blood constituent measuring apparatus and method, which can be used to measure the oxygen (or other blood constituent) content of the blood. The apparatus includes sources of two or more...
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4800885 |
Blood constituent monitoring apparatus and methods with frequency division multiplexing
Apparatus and method for measuring the level of a constituent such as oxygen in the blood of a living subject. Light at a plurality of wavelengths is emitted and directed through the patient's body...
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4800495 |
Method and apparatus for processing signals used in oximetry
The present invention relates to the processing of signals containing information about the pulse rate and oxygen saturation of arterial blood flowing in tissue. These signals have a relatively...
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4796636 |
Noninvasive reflectance oximeter
A noninvasive optical oximeter for measuring oxygen saturation of arterial blood. A sample of blood is illuminated with light at two different wavelengths. Light reflected by the blood is sensed by...
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4714080 |
Method and apparatus for noninvasive monitoring of arterial blood oxygen saturation
A noninvasive optical oximeter for measuring oxygen saturation of arterial blood. A sample of blood is illuminated with light at two different wavelengths. Light reflected by the blood is sensed by...
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4694833 |
Noninvasive device for photoelectrically measuring the property of arterial blood
A noninvasive device for photoelectrically measuring a property of arterial blood is provided. Light that contacts living tissue with arterial blood is converted into a pair of electrical signals....
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