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8175668 |
Implantable multi-wavelength venous oxygen saturation and hematocrit sensor and method
An intravenous implantable optical sensor assesses the relative absorbance of multiple wavelengths of light in order to determine oxygen saturation. The calculation of oxygen saturation is enhanced...
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8145288 |
Medical sensor for reducing signal artifacts and technique for using the same
A sensor may be adapted to reduce signal artifacts by deflecting the effects of outside forces and sensor motion. A sensor is provided with a rigid annular structure adapted to reduce the effect of...
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8143605 |
System and method for non-invasively monitoring conditions of a object
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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8126527 |
Method and system for determining the contribution of hemoglobin and myoglobin to in vivo optical spectra
This document discusses, among other things, quantification of hemoglobin content, and therefore blood volume, of muscle. An analysis of the optical spectra can determine the ratio of hemoglobin...
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8078251 |
Spring wing assembly for photoplethysmorgraphic sensor
A photoplethysmographic sensor designed for use on the presenting portion of a fetus during labor and delivery. The sensor has a non-deployed state in which the sensor presents a smaller footprint,...
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7473227 |
Apparatus for the treatment of sleep apnea
The invention concerns a medical device for implantation in a body, comprising a stimulation unit, a sleep detector unit having at least one signal input which is adapted to detect a sleep...
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7384794 |
Micro-devices and analytical procedures for investigation of biological systems
Fibres with an extraction phase coated thereon in combination with a positioning device are described to perform adsorption of components of interest from an animal or animal tissue for the...
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7254430 |
Measuring apparatus for measuring a metabolic characteristic in a human body
Blood sugar levels are non-invasively measured based on temperature measurements. Blood sugar levels obtained by non-invasive measurements of temperatures are corrected by blood oxygen saturation...
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7248909 |
Method and apparatus for dynamically monitoring multiple in vivo tissue chromophores
A device and method utilizes a broadband diffuse optical spectroscopy (DOS) system to dynamically calculate the concentrations of multiple chromophores in vivo using a non-invasive probe. The...
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7215983 |
Blood sugar level measuring apparatus
Blood sugar levels are measured non-invasively based on temperature measurement. Non-invasively measured blood sugar level values obtained by a temperature measurement scheme are corrected by blood...
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7130672 |
Apparatus and method for monitoring tissue vitality parameters
Apparatus for monitoring a plurality of tissue viability parameters of a tissue layer element, in which two different illumination sources are used via a common illumination element in contact with...
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6944485 |
Hyperbaric resuscitation system and method
A hyperbaric resuscitation system (10) includes a hyperbaric chamber (20) having a volume sufficient to enclose a human patient (1) and at least two operating personnel (60). The system (10) also...
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6766188 |
Tissue oxygen measurement system
A device and method in accordance with the invention for determining the oxygen partial pressure (PO2) of a tissue by irradiating the tissue with optical radiation such that the light is emitted...
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6749565 |
Method for blood infrared spectroscopy diagnosing of inner organs pathology
A rapid diagnosis method for organ specific disease state is based on obtaining an infrared absorbance spectra of a patient's blood at a frequency range from about 400 cm−1 to about 2000 cm−1 and...
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6708048 |
Phase modulation spectrophotometric apparatus
A pathlength corrected spectrophotometer for tissue examination includes an oscillator for generating a carrier waveform of a selected frequency, an LED light source for generating light of a...
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6654622 |
Device for the combined measurement of the arterial oxygen saturation and the transcutaneous CO2 partial pressure on an ear lobe
A device for the combined measurement of the arterial oxygen saturation and the transcutaneous CO2 partial pressure on an ear lobe comprises a sensor. The sensor has means for pulse oximetric...
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6594513 |
Method and apparatus for determining oxygen saturation of blood in body organs
A spectrophotometric method and apparatus for determining the degree of oxygen saturation of the hemoglobin in the blood within a body part utilizes differences in light absorption based on...
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6564076 |
Time-resolved spectroscopic apparatus and method using streak camera
Methods and apparatus using the principles of time-resolved spectroscopy are disclosed. The present invention employs incident light pulses of sufficiently short duration to permit the rate of the...
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6172473 |
Device for determining rotational number of DC motors
A device for determining a rotational number of an electric dc motor which drives a moving body of an automobile accessory such a sunroof, or a glass pane of a power window includes a switched...
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5891022 |
Apparatus for performing multiwavelength photoplethysmography
A photoplethysmographic measurement device that utilizes wavelength division multiplexing is provided. Signals from multiple light emitters are combined into a single multiplexed light signal in a...
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5838429 |
Apparatus for measuring physiological parameters of blood guided in an extracorporeal circulatory system
The invention relates to an apparatus for measuring physiological parameters of blood conveyed within an extracorporeal circulatory system. Two light sources (1a, 1b) emit light of varying...
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5615673 |
Apparatus and methods of raman spectroscopy for analysis of blood gases and analytes
The present invention relates to systems of methods of measuring selected analytes in blood and tissue using Raman spectroscopy to aid in diagnosis. More particularly, Raman spectra are collected...
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5577499 |
Blood analyzer
A blood analyzer includes a display means that visually informs operating room personnel of the instantaneous condition of a patient's blood. Arterial or central venous tubing connects the analyzer...
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RE35122 |
Method and apparatus for detecting optical pulses
A method and apparatus for improving the calculation of oxygen saturation and other blood constituents by non-invasive pulse oximeters. The method and apparatus permit more accurate determination...
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5462052 |
Apparatus and method for use in measuring a compositional parameter of blood
A sensor cassette for use in measuring a compositional parameter of blood comprising a housing having a wall defining a passage which is adapted to receive blood. The wall is at least somewhat...
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5456252 |
Induced fluorescence spectroscopy blood perfusion and pH monitor and method
A medical monitor, and related method, determines a pre-existing physiological property of an organ of a patient by monitoring fluorescent light produced by constituents associated with the...
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5413100 |
Non-invasive method for the in vivo determination of the oxygen saturation rate of arterial blood, and device for carrying out the method
The apparatus comprises three laser diodes emitting at 660, 750 and 940 nm respectively, excited cyclically at the rate of a timer. The light emitted is channelled by three optical fibers to...
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5372136 |
System and method for noninvasive hematocrit monitoring
A system for determining the hematocrit transcutaneously and noninvasively. Disclosed are a finger clip assembly and an earlobe clip assembly, each including at least a pair of emitters and a...
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5361758 |
Method and device for measuring concentration levels of blood constituents non-invasively
A non-invasive device and method for monitoring concentration levels of blood and tissue constituents within a living subject such as a human or animal utilizes a polychromatic light source that...
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5126937 |
Biological information measurement apparatus
A biological information measurement apparatus is adapted to measure biological information in an extracorporeal circuration or in a living body by various measurement circuits comprising circuit...
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5101825 |
Method for noninvasive intermittent and/or continuous hemoglobin, arterial oxygen content, and hematocrit determination
Described here are a novel means and device for noninvasively quantifying important blood constituents. Total hemoglobin, arterial oxygen content, hematocrit, and other parameters can all be...
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5066859 |
Hematocrit and oxygen saturation blood analyzer
An improved blood analyzing device is disclosed for measuring the hematocrit and oxygen saturation levels of a quantity of blood. The device comprises a housing having a carriage assembly...
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5046505 |
Apparatus and method for measuring cardiac output
Disclosed is an apparatus for measuring a cardiac output on the basis of a dilution method. The measuring apparatus includes a switch for inputting a parameter or the like of an outer diameter or...
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4930506 |
Combined sensor for the transcutaneous measurement of oxygen and carbon dioxide in the blood
The combined sensor with a thermostatted heating device (7, 23) for the simultaneous and continuous transcutaneous measurement of oxygen (O2) and of carbon dioxide (CO2) in the blood contains a...
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4895155 |
Method for estimating blood oxygen saturation
Disclosed is a system, apparatus and method for gathering physiological data. Basic to the system of the present invention is a rigid body mold having preferably a negative impression of the dorsal...
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4773422 |
Single channel pulse oximeter
An electronic apparatus for sensing the percentage of different blood constituents in arterial blood. Light of a plurality of separate wave lengths is sequentially made to pass through a portion of...
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4509522 |
Infrared optical measurement of blood gas concentrations and fiber optic catheter
A simple compact optical device and method for quickly measuring the concentration of CO and CO2, bound to hemoglobin or dissolved in a person's blood using optical techniques which do not require...
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4041932 |
Method for monitoring blood gas tension and pH from outside the body
The concentration (and thus the partial pressure) of certain gases, such as carbon dioxide and oxygen and the pH (hydrogen ion concentration) in arterial blood are determined without the need for...
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