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4656008 |
Alcohol breath testing device
An alcohol breath testing device comprising a conduit through which human breath air is passed. The conduit contains a chemical material which changes appearance upon being contacted by alcohol...
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4651746 |
Oral airway and endotrachial monitor
A patient monitor for an airway or endotrachial tube having a liquid detector which alerts an operator to the presence of liquid in a patient's throat. Vital signs sensors are also deployed on the...
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4648396 |
Respiration detector
An improved method and apparatus for apnea detection is disclosed which features an infrared source and detector pair disposed on opposite sides of a cuvette through which the gas stream inhaled...
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4649027 |
Breath tester
A battery-operated portable breath tester is disclosed. The breath tester includes a housing which defines a sleeve for receiving a wand. The wand defines an internal sample chamber, with a lamp at...
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4619269 |
Apparatus and method for monitoring respiratory gas
An apparatus and method for monitoring respiratory gases in newborn infants. The apparatus includes a first fluid flow circuit from which an oxygen enriched gas is used to ventilate the patient,...
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4608995 |
Method and apparatus for the non-invasive determination of the minute volume of the heart
An arrangement for the non-invasive determination of the minute volume Q of the heart is arranged to determine the amount of a sufficiently soluble gas, e.g. carbon dioxide or nitrous oxide,...
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4607719 |
Alcohol detection device
An alcohol detection device for controlling the ignition circuit of a vehicle. The device incorporates an alcohol sensor (10) within an open ended body (21) to enhance evaporation of condensation...
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4595016 |
APNEA monitor
An infrared fluid analyzer with an improved sensitivity and signal to noise ratio is provided. The device includes a capacitor microphone for detecting absorption of characteristic infrared...
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4592368 |
Gas analyzer protection system
A protection system for a gas analyzer is described which monitors gas pressure adjacent a sample cell included in the analyzer. The sample cell is connected via a gas/liquid separator to an input...
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4579568 |
Gas analyzer separator
A gas/liquid separator for a gas analyzer is described. The separator includes a separator chamber made up of two component chambers. The first of these component chambers is relatively shallow in...
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4579826 |
Method and device for analyzing human breath
A device, useful for breath analysis and as an amusement device, comprising a flexible tube which can be extended from a shortened condition to an extended condition, one end of the tube being...
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4572208 |
Metabolic gas monitoring apparatus and method
Metabolic gas monitoring apparatus and methods for measuring the metabolic rate in patients. The apparatus includes separate inlets for a calibration gas, inspired gas, and expired gas, and means...
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4558709 |
Gas introducing apparatus for respiratory gas analyzer
A gas introducing apparatus for a respiratory gas analyzer which comprises a gas introducing tube for guiding sampled gas from an airway tube inserted into the airway of a patient to a gas...
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4558708 |
Patient's airway adapter to withdraw a patient's gas samples for testing free of sputum mucus and/or condensed water, by utilizing a hollow cylindrical hydrophobic liquid baffle
A patient's airway adapter is fitted into a patient's airway, which is a combined breathing air supply and exhaust gas fluid flow passageway. The housing of this patient's airway adapter connects...
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4556068 |
In-vivo measurement of lithium in the brain and other organs
The lithium used clinically and distributed in organs such as the brain or idney of humans and other exhaling animals is determined in-vivo by means of neutron radiation and measuring in the...
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4549553 |
Apparatus and method for use in a medical gas sampling system
An apparatus and method for providing a sample gas flow from an air tube of a patient undergoing automatic ventilation is disclosed. The air tube includes a gas diffusive membrane disposed in a...
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4548805 |
Non-invasive test for gastric acid
A non-invasive method for determining gastric acidity in humans, using oral magnesium metal powder while measuring the hydrogen gas response in exhaled breath and belches. The magnesium reacts with...
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4546778 |
Moisture detector for respiratory monitoring systems
A system for monitoring patient respiration include a disposable, convenient moisture detection device. The device is minimally intrusive to the laminar flow of gases and has minimal liquid...
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4535780 |
Apparatus for measuring xenon concentration in xenon cerebral blood-flow studies
Apparatus for measuring xenon concentration in xenon cerebral blood-flow studies operates under the control of a microprocessor which is used to monitor the patient's breathing cycle and to control...
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4522204 |
Respiratory gas concentration measuring apparatus
A respiratory gas concentration measuring apparatus includes a chopper having a first filter for passing therethrough light from a light source and having a first wavelength which can be absorbed...
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4517987 |
Method for measurement of nonradioisotopic aerosol retained in the lungs with re-breathing
A subject rebreathes an inert aerosol from a closed system and, during each of a plurality of breaths, the aerosol concentration in the closed system is determined and compared to determine...
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4509359 |
Method and apparatus for measuring the concentration of a given component in a gas inhaled and/or exhaled by a patient
For the purpose of measuring the concentration of one or more given components of the breathing gas of a patient there is removed a small part of the breathing gas at a location immediately in...
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4487055 |
Breath alcohol testing device
In a breath alcohol testing device, including a breath-receiving tube, a fuel cell chamber communicating with the tube, a fuel cell within the chamber and a movable wall, for example, a diaphragm,...
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4485822 |
Multi-phase interfacing system and method
A system and method for interfacing a patient with apparatus for monitoring gaseous components of the exhalation of said patient. The system includes a low dead space volume disc filter for...
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4463764 |
Cardiopulmonary exercise system
A cardiopulmonary exercise system for real-time, breath-by-breath acquisition, analysis, display and printing of an individual's physiologic parameters. A microprocessor based waveform analyzer...
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4459994 |
Method for assuring valid measured values of breath alcohol concentration
A method for assuring valid measured values of breath alcohol concentration for the determination of the alcohol concentration in human blood by means of a gas analyzer operating on the principle...
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4459266 |
Air purity monitoring system
A system for detecting specific contaminants in a gas such as compressed air and automatically indicating the degree of detected contamination. The system is selectively operable in either a PURGE...
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4456014 |
Flow restrictor
For restricting the flow of breathing gas between a patient's breathing tube and a breathing gas analyzer, there is provided a fitting extending into the breathing tube. The fitting preferably has...
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4446869 |
Water absorbing trap to protect an infrared exhaled carbon dioxide apnea monitor of a patient's respiration
A water trap is connected to a cannula which has a substantially constant internal diameter and which communicates moisture laden patient exhalations therethrough to an analyzer. The trap includes...
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4440177 |
Respiratory analyzer system
A system for measuring the ventilatory response of the human respiratory system to increased levels of CO 2 and/or decreased levels of O 2 . Measured concentrations of CO 2 are introduced into an...
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4423739 |
End tidal carbon dioxide gas analyzer
A method and apparatus are described for determining the partial pressure of carbon dioxide in the arterial blood of a patient. The method and apparatus are particularly useful where the patient is...
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4368740 |
Physiologic analyzer
A physiologic analyzer is disclosed for continuous measurement of a subject's metabolic functions in which signals from ventilatory flow rate sensors and gas analyzers are processed to provide...
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4366821 |
Breath monitor device
A breath monitor device useful for monitoring the inhaling and exhaling of patients and particularly patients on a breathing apparatus, the device being constructed to have a sensor element...
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4363327 |
Cyclic injection method for continuous measurements of pulmonary parameters
A non-invasive cyclic injection method for determining pulmonary blood flow, the ventilation-perfusion distribution and functional residual capacity, which consists of the non-invasive cyclical...
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4359057 |
Apparatus for measuring oxygen consumption and the exchange of other breathing gases
An apparatus for measuring the oxygen consumption and the exchange of other breathing gases comprises an inflatable bag for collecting therein the gas exhaled by a patient, a main pneumatic circuit...
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4350166 |
Apnea detector
A non-contacting apnea detector includes a long wave infrared detecting device which is arranged with a focusing means to define a predetermined field of view. This detector is positioned to...
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4346584 |
Gas analyzer
Apparatus for automatically analyzing a gas sample to determine the concentration of an absorbable gas therein, such as carbon dioxide in a patient's out breath. In the preferred embodiment, the...
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4346583 |
Method and apparatus for determining the hydrogen content of a gas
Determining the hydrogen content of the expiratory air of a person using a sample holder and a hydrogen detector. Expiratory air is passed through the sample holder in order to obtain an expiratory...
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4334540 |
Method of diagnosing periodontal disease through the detection of pyridine compounds
A novel method of diagnosing periodontal disease is disclosed wherein telltale pyridine and alkyl-pyridine compounds which are detected in the oral cavity are indicative of periodontal disease. An...
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4317453 |
Method and apparatus for testing a person's breath for the determination of its alcohol content
A method for determining the gas content of a person's breathing air, comprises, first determining when the breathing air is at a condition in which best testing results will be effected. This is...
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4316380 |
Method for determining the alcohol content in breathing air
A method and apparatus of determining the alcohol content of the breath of a test person comprising, measuring the alcohol content of the breath to produce an alcohol content signal, measuring the...
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4314564 |
Method and apparatus for determining alcohol concentration in the blood
A method and apparatus for determining the alcohol concentration in the blood of a person by testing the person's breath, including, maintaining at least a minimum flow rate for the person's breath...
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4298010 |
Breathing alcohol testing device
A breathing alcohol testing device comprises a tube for blowing expiration air therethrough which has a first air entrance end and an opposite second end with means for accommodating a testing tube...
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4297871 |
Gas sampling devices
A breath sampling device in which a main flow tube through which a subject blows is provided with a venturi restriction. The main flow tube communicates through a passage at the restriction to...
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4292978 |
Breath test mouthpiece
A breath-test mouthpiece of the type used to remove solids, saliva and water vapor from the breath of a subject being tested to determine a breath constituent, typically breath alcohol, including...
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4278636 |
Calibrating device for a breath alcohol measuring instrument
A calibrating device for a breath alcohol measuring instrument which includes a passage for the breathing air which has a sensor and a collector arranged therein with a discharge to atmosphere from...
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4276888 |
Vital function monitor
A multi-function portable patient monitor arrangement having minimal power requirements particularly useful in association with patient transport apparatus to monitor patient functions such as,...
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4274425 |
Mouthpiece for a redox gas measuring device
In a device for measuring redox gases, such as alcohol, in a person's breath, a disposable tubular mouthpiece forms an elongated flow passage and is displaceably securable in a measuring head. The...
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4269194 |
Carbon dioxide measurement from expired gases in a partial rebreathing anesthesia circuit
A method of determining arterial carbon dioxide tension from mixed expired gases of a patient utilizing a partial rebreathing anesthesia circuit. An electrode is inserted into expired gases of a...
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4248245 |
Method and device for determining and separating the alveolar air proportion from the breathing air
A method of determining and separating the alveolar air proportion of a person's breathing air and thereafter measuring a proportion of a desired gas component thereof, comprises, conveying the...
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