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Qualitative or quantitative analysis of breath component

Subclass of:

600 - Surgery

600300000 - DIAGNOSTIC TESTING

600529000 - Respiratory

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DocumentTitleDate
20100063410Method and system for measuring lung tissue damage and disease risk - This invention relates to a method, system, and devices relating to quantitatively measuring regional lung tissue damage by combining the CT scan measurements of the mineral density deviations and/or mineral composition deviations in airway tissue, with the measurements of airflow lung function measurements.03-11-2010
20110201956DIRECT LUNG SENSOR SYSTEMS, METHODS, AND APPARATUSES - Devices, systems, and methods for diagnosing physiological parameters of the lungs and treating associated medical conditions are disclosed herein. In particular, certain embodiments permit detection of air flow in lung passageways, air leaks, gas concentration (in particular oxygen), and temperature measurements. Measurements obtained using the devices, systems, and methods disclosed herein may also be used to determine optimal treatment sites for medical conditions such as emphysema, COPD, or lung volume reduction.08-18-2011
20100081955Sampling Circuit for Measuring Analytes - This disclosure describes an apparatus and method for measuring analytes in exhaled air. The device contains an inlet through which exhaled air is received. A tube, having a number of different paths running throughout the device, is coupled to the inlet which enables the exhaled air to be re-circulated through the device. At least one portion of the tube is configured in a non-linear fashion. This particular portion of the tube may be used to temporarily store a sample of the exhaled air. The device also contains a converter configured to partially convert an analyte in the exhaled breath from a first state to a second state as the exhaled air is being re-circulated. An analyte sensor is also included to measure the levels of the converted analyte in the exhaled breath.04-01-2010
20130079658MINIMALLY INVASIVE IMAGE-BASED DETERMINATION OF CARBON DIOXIDE (CO2) CONCENTRATION IN EXHALED BREATH - What is disclosed is a system and method for image-based determination of carbon dioxide (CO03-28-2013
20130041279SYSTEM AND METHOD FOR MONITORING PHYSIOLOGICAL FUNCTIONS - A method of diagnosis. The method can include the steps of sampling the breathing of a patient and from the sampling, obtaining a waveform corresponding to a pattern of the breathing of the patient in which the waveform is a repetitive waveform that is indicative of a carbon dioxide concentration in air expired by the patient. The method can also include the steps of processing the waveform to obtain a set of data that reflects the carbon dioxide concentration in the expired air and based on the processing of the waveform, detecting a potential adverse respiratory event in the patient.02-14-2013
20130041280COMPENSATION OF VOLUMETRIC ERRORS IN A GAS MONITORING SYSTEM - A mainstream gas monitoring system (02-14-2013
20100106039Unknown - Example embodiments relate to a device for measuring nitrogen monoxide in exhaled air by a gas sensor unit with at least one gas sensor. A device and/or method for oxidation of nitrogen monoxide to nitrogen dioxide may be included. The device and/or method for oxidation of nitrogen monoxide to nitrogen dioxide includes a non-consuming catalyst for catalyzing the oxidation of nitrogen monoxide to nitrogen dioxide.04-29-2010
20090275851Endoscopic Bite Block - According to a preferred embodiment of the present invention there is provided a bite block assembly adapted for capnography and oxygen delivery to a subject, the bite block assembly including a first capnography passageway adapted for passage therethrough of exhaled breath from the subject to a capnograph and a second oxygen delivery passageway, separate from the first passageway, adapted for passage therethrough of oxygen from an oxygen source to the mouth of the subject.11-05-2009
20090043219MONITORING SYSTEM FOR CARDIAC SURGICAL OPERATIONS WITH CARDIOPULMONARY BYPASS - A monitoring system for cardiac operations with cardiopulmonary bypass comprising: a processor operatively connected to a heart-lung machine; a pump flow detecting device connected to a pump of the heart-lung machine to continuously measure the pump flow value and send it to the processor; a hematocrit reading device inserted inside the arterial or venous line of the heart-lung machine to continuously measure the blood hematocrit value and to send it to the processor; a data input device to allow the operator to manually input data regarding the arterial oxygen saturation and the arterial oxygen tension; computing means integrated in the processor to compute the oxygen delivery value on the basis of the measured pump flow, the measured hematocrit value, the preset value of arterial oxygen saturation, and the preset value of arterial oxygen tension; and a display connected to the processor to display in real-time the computed oxygen delivery value.02-12-2009
20090306527Method of Exhaled Gas Measurement and Analysis and Apparatus Therefor - An exhalation collected in a breath bag capable of expanding and contracting is sucked into a gas inlet vessel 12-10-2009
20090112115Apparatus for detecting human's breathing - An apparatus applied to detect the human breath gas, including a substrate which carries a circuit module, a CNT-based (carbon nanotube) gas sensing element, a wireless transmission/receiver module, and a power supplier, etc. and a clamp structure that could be clamped on the columella between the nostrils. The detectable gas also includes the bioaerosol in the gas. The CNT-based gas sensors react with the breath air and detect whether the specific gas and bioaerosol in the air or not while breathing in and out and the temperature of the air could be measured. This invention can measure the electric response of the CNT-based gas sensor, process the signal by the circuit module and transmit the processed signal to the wireless receiver by wireless transmission/receiver module. And the wireless signal receiver will differentiate the species, concentration and temperature of the gas and provide a warning signal while the specific gas or bioaerosol is detected. The apparatus is portable and has the functions of rapid response and high sensitivity.04-30-2009
20130060157OXYGEN FACEMASK WITH CAPNOGRAPHY MONITORING PORTS - An oxygen face mask to cover a user's nose and at least partially cover a user's mouth with lateral sampling ports; systems including such a face mask; and methods of using such a face mask.03-07-2013
20110015534AIRWAY ADAPTOR - An airway adaptor includes: an airway case; and an expired gas guiding portion which is connected to the airway case to introduce a respiratory gas to the airway case. The airway case includes: a first respiratory gas flow path in which the respiratory gas flows in a first direction; and a second respiratory gas flow path in which the respiratory gas flows in a second direction opposite to the first direction.01-20-2011
20090275852EXHALED BREATH ANALYSIS METHOD - Handling of the condensate collecting vessel in conventional breath analysis apparatuses having a cold condensation mechanism is complicated, and time consuming.11-05-2009
20120226180USER UNIT FOR DETERMINING OUTPUT PARAMETERS FROM BREATH GAS ANALYSES - Shown and described is a user unit (09-06-2012
20130066224Identification Of Disease Characteristics Using Isotope Ratios In Breath - Methods are disclosed for distinguishing whether an animal is experiencing a bacterial infection or a viral infection. One monitors breath taken from the animal over time to measure the relative amount of a first breath stable isotope to a second breath stable isotope therein over time. A quick change in the isotope ratios within several hours from the likely infection is indicative of a bacterial infection. A delayed change in the isotope ratios, followed by periodic repeated alterations in the ratios, is indicative of viral infection. The methods are particularly efficient when using cavity ringdown spectroscopy for the monitoring. They may be used for monitoring a patient already admitted to a hospital, or for monitoring a patient initially complaining of adverse symptoms, or for triage, or for collectively monitoring a population of animals.03-14-2013
20130066223Vehicle Interlocking System and Method Based on Detection of Analytes in Exhaled Breath - A drug interlock for vehicles based on exhaled breath directed onto said SERS-active substrate, wherein a detected drug substance in exhaled breath of a subject locks said vehicle from use for at least a pre-determined time or a repeated exhaled breath test where no drugs are detected. A collecting surface has a Surface Enhanced Raman Spectroscopy (SERS)-active layer that comprises at least one SERS-active material. The collecting surface is arranged as an outer surface of a waveguide for contact with exhaled breath, such that at least traces of said at least one drug substance in said exhaled breath can contact said SERS-active layer for read-out of a Raman shift spectrum that is detected in-situ for said detecting the presence or determining the quantitative amount of said at least one drug substance from said exhaled breath.03-14-2013
20110021942APPARATUS AND METHOD OF ANALYZING CONSTITUENTS OF GAS IN ORAL CAVITY AND ALVEOLAR GAS - An apparatus and a method of analyzing constituents of gas in an oral cavity and exhaled breath is disclosed. The apparatus for analyzing the constituents of gas in the oral cavity and exhaled breath according to the present invention includes a filter to filter the outside gas by adsorbing polar molecules and non-polar molecules in the outside air and by removing water in the outside air in order to use the outside gas as carrier gas. The apparatus can also include a plurality of solenoid valves for controlling the flow of a carrier gas; a sensor for detecting components of the exhaled breath; a pump to draw the gas in the oral cavity or the exhaled breath and the carrier gas and discharge the gases to the outside; a control unit for controlling the components of the apparatus; and a display device to display results calculated by the control unit.01-27-2011
20090247890SOLID STATE MYOCARDIAL INFARCTION DETECTOR - The disclosure, according to one embodiment, relates to a breath analyzer device for detecting concentration of a marker, such as pentane, in air exhaled by a patient. The device may include a detector having a solid state sensor able to detect pentane in a concentration of between 1 nmol/l to 5 nmol/l in air exhaled by a patient. The solid state sensor may include a carbon nanotube. The breath analyzer may include a body having a breath detection channel in which the detector is located, a display, and a power source. The disclosure also relates to a method of detecting myocardial infarction in a patient by detecting pentane in exhaled air from the patient.10-01-2009
20120116241PORTABLE ASTHMA DETECTION DEVICE AND STAND-ALONE PORTABLE ASTHMA DETECTION DEVICE - The present invention relates to a portable asthma detection device and a stand-alone portable asthma detection device. The portable asthma detection device includes a housing; a gas detection module comprising a turbine and a mini airflow sensor; a gas introducing tube; and a signal delivery unit. In addition, the stand-alone portable asthma detection device includes a housing; a gas detection module comprising a turbine and a mini airflow sensor; a gas introducing tube; at least one input unit; at least one display unit; and at least one delivery unit. Thus, the detection of breathing condition can be performed anytime and anywhere by using the portable asthma detection device and stand-alone device, and then the efficiency of monitor and management of asthma can be improved.05-10-2012
20130165806COLLECTION AND ANALYSIS OF A VOLUME OF EXHALED GAS WITH COMPENSATION FOR THE FREQUENCY OF A BREATHING PARAMETER - Apparatuses are described to accurately determine a gas concentration of a sample of a patient's breath. The apparatuses may include a sample compartment, a breath speed analyzer, a gas analyzer, and a processor. The sample compartment includes an inlet that receives the breath. The breath speed analyzer determines the speed of a portion of the breath. The gas analyzer determines a gas concentration. The processor includes an algorithm that determines a degree of non-homogeneity of the sample based on the speed, and a corrected gas concentration based on the degree of non-homogeneity. In some variations, the gas correction is determined independently of patient cooperation. Apparatuses may be tuned based on the intended population's expected breathing pattern ranges such that the sample compartment is filled with a homogenous end-tidal gas sample regardless of an individual's breathing pattern. These apparatuses are useful, for example, for end-tidal CO analysis. Methods are also described.06-27-2013
20080294059System and Method for Determining a Time When the Blood Alcohol Concentration Has Passed a Threshold Level - A system operable to determine a future point of time, at which the alcohol concentration in blood of a user is less than a threshold value. The system includes an alcohol sensor operable to detect a current alcohol concentration in blood of the user, and a portable apparatus. The alcohol sensor and the portable apparatus comprises each a wireless communication apparatus. The wireless communication apparatus in the alcohol sensor is operable to wirelessly transmit the current alcohol concentration to the wireless communication apparatus in the portable apparatus.11-27-2008
20100268106BREATH CONDENSATE SAMPLER AND DETECTOR AND BREATH/BREATH CONDENSATE SAMPLER AND DETECTOR - The present invention provides a direct sampler and detector for analytes found in exhaled breath condensate. Analytes in the breath condensate are detected instantaneously as they condense prior to reaching the sensor surface or condense directly on the sensor surface. Because the analysis or assay is performed immediately after patient exhalation, analyte stability is significantly improved providing accurate, reliable, consistent, and clinically applicable results. In certain embodiments, combined breath condensate/breath samplers and detectors are provided, enabling multiplexed analysis of condensed and vapor-phase analytes provided in a single sampling session. Breath is collected and directed to one or more subsystems. Within each subsystem, the breath portion is either condensed or prevented from condensing. The technique also allows real-time continuous monitoring, thus allowing immediate feedback to both medical professionals and additional hardware such as ventilators, anesthesia machines, drug infusion systems and cardiac pacemakers.10-21-2010
20080300500APNEA DETECTION USING A CAPNOGRAPH - A method for diagnosis includes receiving a signal indicative of a partial pressure of CO12-04-2008
20090318823Air sampling apparatus and methods - An air sampling apparatus is disclosed, including a closed loop system for extracting air to be sampled into an analysis device such as a gas chromatograph, which is further coupled to an output. The closed loop sample extraction method reduces contaminants that can otherwise be introduced into air samples.12-24-2009
20110301483LOCAL LUNG MEASUREMENT AND TREATMENT - A method of determining potential treatment sites in a diseased lung is disclosed, in which an assessment catheter is introduced into a lung passageway. The catheter has a distal portion comprising an occluding member and a proximal portion configured to operatively mate with an external console. The catheter is used to identify one or more assessment sites within the airways of the lung. At each assessment site, at least one physiological, anatomical or biological characteristic is determined. A characteristic score for each assessment site is calculated based on a predetermined algorithm; and a treatment is determined based on the scores of the assessment sites. The algorithm takes into account several parameters including the disease characteristics as well as the number and proximity of each assessment site to at least one of the diseased regions. The method envisages treatment of emphysema, asthma or bronchopleural leak.12-08-2011
20100249631RESPIRATORY WAVEFORM ANALYZER - A respiratory waveform analyzer, operable to analyze a respiratory waveform, which is generated based on a temporal change of a concentration of a component in respiratory gas of a subject, includes: a respiratory gas concentration generator which generates a concentration signal based on an output signal from a sensor that is placed to measure the concentration of the component; a flatness calculator which calculates a flatness indicative of flat degree of the respiratory waveform based on a temporal change of the concentration signal; and a reliability calculator which calculates a reliability of the respiratory waveform based on the flatness and the concentration signal.09-30-2010
20110288430Gas Sensor - A sensor and method for detecting a target substance, particularly CO11-24-2011
20110295141METHODS AND SYSTEMS FOR ENDOBRONCHIAL DIAGNOSTICS - A method for assessing lung function in a patient is disclosed. The method comprises isolating a lung compartment. Thereafter, in one embodiment, an inhaled gas of known composition is introduced into the lung and compared to the composition of the exhaled gas. Alternatively, accumulated CO12-01-2011
20110295140Method and Apparatus for Measuring Trace Levels of CO in Human Breath Using Cavity Enhanced, Mid-Infared Absorption Spectroscopy - A method and apparatus for analyzing trace levels of CO in human breath for the purpose of, among other things, assessing the severity of pulmonary diseases and monitoring the patient's response to a prescribed treatment. The apparatus measures in situ and in real time the CO concentration at sensitivity levels at least as low as parts per billion. A laser of the apparatus has a wavelength in mid-infrared (MIR) spectrum. The optical is constructed and arranged to perform cavity enhanced absorption spectroscopy (CEAS) the breath sample. The cavity includes highly reflective mirrors mounted to each side of the optical cavity to cause the light received from the laser to bounce back and forth within the optical cavity to increase effective path length of the light. A breath intake tube is connected to the optical cavity for collecting a sample of the patient's exhaled breath and transferring it to the optical cavity. A photo detector measures parameters of the light exiting the optical cavity. A controller to operates the system and determines the concentration of CO in the breath sample based on measurements from the photo detector. Appropriate hardware and software display and store the data in real time.12-01-2011
20080275355Method For Diagnosing An Infectioin Condition - A method and an apparatus for determining an infection condition in an organism by measuring the level of nitrous oxide present in a gas sample taken from the organism. In one embodiment the nitrous oxide content of a gas sample is measured to diagnose systemic inflammatory response in a living organism. In an alternative embodiment, the nitrous oxide level of a gas sample taken from a living organism may be compared the with an expected nitrous oxide level for a healthy organism or with a prior measured nitrous oxide level of the living organism to diagnose the presence or absence of an infection in the living organism. A method and apparatus for determining response to a course of therapy is provided. The method and apparatus compares the nitrous oxide levels of a living organism before and after the administration of a therapy to the living organism to determine a response to the therapy.11-06-2008
20100004555APPARATUSES AND METHODS FOR EXTRACTING CHEMICALS FROM THE ORAL CAVITY AND BREATH - The present disclosure generally pertains to chemical extraction apparatuses and methods for extracting volatile, semi-volatile, and non-volatile chemicals from a user's oral cavity. In one exemplary embodiment, a chemical extraction apparatus is composed of absorbent material, which is positioned within the oral cavity of a user for a period of time. Volatile, semi-volatile, and non-volatile chemicals are extracted from the breath and saliva of the user. By keeping the absorbent material in the oral cavity for an extended period of time, such as several minutes or hours depending on the types of materials selected, even trace levels of a chemical can be concentrated in the absorbent material thereby enabling conventional analytical techniques to detect the chemical.01-07-2010
20100036274IDENTIFICATION OF DISEASE CHARACTERISTICS USING ISOTOPE RATIOS IN BREATH - Methods are disclosed for distinguishing whether an animal is experiencing a bacterial infection or a viral infection. One monitors breath taken from the animal over time to measure the relative amount of a first breath stable isotope to a second breath stable isotope therein over time. A quick change in the isotope ratios within several hours from the likely infection is indicative of a bacterial infection. A delayed change in the isotope ratios, followed by periodic repeated alterations in the ratios, is indicative of viral infection. The methods are particularly efficient when using cavity ringdown spectroscopy for the monitoring. They may be used for monitoring a patient already admitted to a hospital, or for monitoring a patient initially complaining of adverse symptoms, or for triage, or for collectively monitoring a population of animals.02-11-2010
20100063409INTERACTIVE ALCOMETRY - The invention relates to method and apparatus for the determination of alcohol concentration of expired air. By visualising current or accumulated measuring value and error in real time during ongoing measurement, interactive control of alcohol determination is enabled with respect to accuracy and time lapse. Preferably the measurement is performed without contact with compensation for the dilution of the breath sample, which is performed by simultaneous measurement of temperature, concentration of water vapour or carbon dioxide. The method is divided into a stepwise procedure based on the dependence of the measuring error on the dilution of the expired air, and accumulated time, both being possible to influence by the test person or operator. Special advantages are being obtained at measurements relative to a concentration limit. The alcohol determination is preferably performed by means of absorption spectroscopy within the infrared wavelength range. The apparatus according to the invention includes sensors for the abovementioned entities, an electronic unit for signal and data processing, a presentation unit, and is embedded in a compact housing for handheld use or integration. The response time of the sensors should not exceed 0.5 seconds in order to fulfil the requirement of real time operation. The housing is controllably openable at measurement, and includes a measuring cell illuminated with collimated infrared radiation and means for active air flow. 03-11-2010
20100081956Method, composition, and system to control pH in pulmonary tissue of a subject - Methods, pharmaceutical compositions, and systems are provided which include a method for treating a pulmonary viral infectious disease in a subject. The method includes administering a pharmaceutical composition including at least one agent to a pulmonary tissue of the subject, wherein the pharmaceutical composition is administered as two or more distinct and non-overlapping particle size ranges configured to contact two or more levels of pulmonary tissue of the subject, wherein the at least one agent is configured to achieve a selected pH range in the two or more levels of pulmonary tissue of the subject.04-01-2010
20100081957Method, device, and system to control pH in pulmonary tissue of a subject - Methods, systems, and devices are provided which include receiving data or providing data, wherein the data regards a physical condition affecting one or more subjects. The data can inform administration of a pharmaceutical composition in response to the physical condition, wherein the pharmaceutical composition is configured to contact pulmonary tissue to treat a pulmonary disease or condition in the one or more subjects. The data regarding the physical condition may be acquired prior to the subject entering an environment where the physical condition exists.04-01-2010
20100099999ORAL END TIDAL CARBON DIOXIDE PROBE - In embodiments of the present invention improved capabilities are described for evaluating pulmonary embolism. A system and method of evaluating pulmonary embolism in a subject may include measuring end tidal partial pressure of exhaled carbon dioxide in the subject, wherein the measurement is made orally, obtaining a clinical approximation of dead space ventilation based on the measurement, and excluding pulmonary embolism when the end tidal partial pressure of exhaled carbon dioxide reaches a threshold.04-22-2010
20120296229NEONATAL COLORIMETRIC CARBON DIOXIDE DETECTOR - A neonatal colorimetric carbon dioxide detector has a colorimetric carbon dioxide detector membrane having a pH-sensitive chemical indicator that undergoes colorimetric change in the presence of carbon dioxide. The detector has a patient orifice in fluid communication with the baby's airway and a respiration equipment orifice connected to a breathing system. The patient orifice is connected to a breathing tube and when the breathing tube is inserted correctly into the trachea, as the baby exhales, carbon dioxide interacts with the colorimetric membrane which changes color based upon the concentration of carbon dioxide. The internal volume of the neonatal colorimetric carbon dioxide detector is reduced to properly function with low-birth-weight (neonatal) infants.11-22-2012
20090088657SENSOR FOR MEASURING CARBON DIOXIDE IN RESPIRATORY GAS - A sensor main unit 04-02-2009
20090088656FLUID DRYING MECHANISM - There is provided an exhaled breath moisture reduction system including a dryer mechanism and a connector adapted to connect the dryer mechanism proximate to a respiratory output device. There is also provided an exhaled breath sampling assembly including an airway adaptor and a moisture reduction sleeve comprising a material adapted to reduce moisture and a connector adapted to connect said sleeve substantially adjacent to a breath sampling inlet within the adaptor. Also provided, a method of sampling breath which includes attaching an exhaled breath moisture reduction sleeve substantially adjacent to a breath sampling inlet.04-02-2009
20090281443DEVICE FOR TAKING AND ANALYZING BREATHING GAS SAMPLES - A device provided for taking and continuously analyzing and monitoring breathing gas samples from defined, current phases of breathing of a patient is equipped with a breathing gas line (11-12-2009
20090281442BREATH AEROSOL MANAGEMENT AND COLLECTION SYSTEM - Aerosol collectors 11-12-2009
20120271188APPARATUS FOR MEASURING A LEVEL OF A SPECIFIC GAS IN EXHALED BREATH - There is provided an apparatus for measuring levels of a specified gas in exhaled breath, the apparatus comprising a photoacoustic sensor for providing a measurement representative of the level of the specified gas in the exhaled air, wherein the photoacoustic sensor comprises a light source that is modulated at a first frequency; a sound speed measurement module for measuring the sound speed of the exhaled breath, wherein the sound speed measurement module operates either at a second frequency that is substantially different to the first frequency or in a pulsed mode; wherein the first frequency of the modulated light source is adjusted during exhalation in accordance with the measured speed of sound of the exhaled breath.10-25-2012
20120271187METHOD AND DEVICE FOR MONITORING CARBON DIOXIDE - Various embodiments provide a medical device for monitoring carbon dioxide in the exhaled breath from a non-intubated patient. Various embodiments provide methods for monitoring expired carbon dioxide, when a patient is under conscious sedation or is in any situation in which knowledge of respiratory status is useful.10-25-2012
20090299208FLOW MEASUREMENT SYSTEM AND BIOLOGICAL INFORMATION MONITOR - A flow measurement system includes: a respiration monitoring apparatus which measures a flow of a gas flowing through a flow path, to output a measurement value; and a gas monitoring apparatus which samples the gas to measure at least one of a concentration of a component of the gas and a component of the gas and to generate information on the flow of the sampled gas. The measurement value is corrected based on the information.12-03-2009
20100137731NANOELECTRONIC CAPNOMETER ADAPTER INCLUDING A NANOELECTRONIC SENSOR SELECTIVELY SENSITIVE TO AT LEAST ONE GASEOUS CONSITUTENT OF EXHALED BREATH - A capnometer adaptor includes a nanostructure sensor configured to selectively respond to a gaseous constituent of exhaled breath, such as to carbon dioxide. In certain embodiments, the adaptor includes an airway adaptor having at least one channel configured for the passage of respiratory gas; at least one nanostructure sensor in fluid communication with the passage, the sensor configured to selectively respond to at least one gaseous constituent of exhaled breath comprising carbon dioxide; and electronic hardware connected to the nanostructure sensor and configured to provide a signal indicative of a response of the sensor to the at least one gaseous constituent of exhaled breath. The sensor may be provided as a compact and solid-state device, and may be adapted for a variety of respiratory monitoring applications.06-03-2010
20100137732GAS ANALYZING UNIT AND AIRWAY ADAPTER - An airway adapter. The airway adapter has a sampling chamber for allowing a respiratory gas flow. The airway adapter also has a sensor for acquiring a signal needed for a respiratory gas analysis. The sensor is integrated into the airway adapter and which sensor comprises an electrolyte being in contact with the respiratory gas flowing in the sampling chamber and which electrolyte contact with the respiratory gas is a basis for respiratory gas analysis.06-03-2010
20110208081APPARATUS AND METHOD - A breath testing apparatus having a sampling device (08-25-2011
20080319334NASAL MASK FOR CARBON DIOXIDE GAS MEASUREMENT - A nasal mask is adapted to attached on a face of a subject so as to cover a nose of the subject. A shell has a contact edge adapted to be brought into close contact with the face of the subject, thereby forming a sealed space therein. An attachment portion is disposed in the shell and has an inner space. The attachment portion is configured to detachably engage with a sensor disposed outside the shell and operable to measure concentration of carbon dioxide gas expired from the nostrils. A guide member is disposed inside the shell and forming a passage adapted to introduce expired gas from the nostrils into the inner space. The shell is formed with an inlet adapted to introduce external gas into the sealed space. The expired gas is guarded by the guide member from the external gas introduced through the inlet. The attachment portion is formed with an outlet adapted to discharge the expired gas from the inner space to the sealed space.12-25-2008
20090187111GAS ANALYZER - The subject invention is directed to a breath analyzer which is capable of detecting toxic gas levels from breath analysis. The subject invention includes a mouthpiece which is in communication with a plurality of discrete chambers, such as first and second discrete chambers, each being provided with a separate probe for breath analysis. The probes are connected to analyzers for determining detected levels of gas. In a first embodiment, a first probe may be provided for carbon monoxide detection with a second probe being provided for hydrogen cyanide detection. Advantageously, with this arrangement, breath analysis may be conducted on-site, for example at the site of a fire, to quickly and simultaneously determine carbon monoxide and hydrogen cyanide levels in a person's blood stream. In a second embodiment, a first probe may be provided for detection of carbon monoxide and a second probe may be provided for detection of hydrogen. With this arrangement, a calibrated correction of measured carbon monoxide data can be made to correct for improperly detected hydrogen. As such, a highly accurate on-site measurement for carbon monoxide can be achieved.07-23-2009
20090143694Automated interpretive medical care system and methodology - Improved apparatus and methods for monitoring, diagnosing and treating at least one medical respiratory condition of a patient are provided, including a medical data input interface adapted to provide at least one medical parameter relating at least to the respiration of the patient, and a medical parameter interpretation functionality (06-04-2009
20130218040APPARATUS, ARRANGENT AND METHOD FOR ANALYZING BREATHING GAS FLOWING ALONG A BREATHING TUBING FOR SUBJECT BREATHING - An apparatus and method is provided for analyzing a breathing gas flowing along a breathing tubing for subject breathing. The breathing gas comprises breathing cycles having different phases. Liquid particles can be delivered intermittently depending on the phase, or continuously into the breathing gas. The apparatus comprises a gas sample supplier for adjusting gas sample supply from the breathing gas, and a gas analyzer for receiving the gas sample adjusted by the gas sample supplier and for measuring the gas sample property. The apparatus further comprises a processing unit for receiving a signal indicative of one of the phases of the breathing cycle and the delivery timing of the liquid particles. The processing unit is able to control the sample supplier based on the signal to limit access of liquid particles with the gas sample towards the gas analyzer.08-22-2013
20090247891NITRIC OXIDE MEASUREMENTS IN PATIENTS USING FLOWFEEDBACK - The present invention provides a method for measuring FeNO in a subject, wherein the FeNO data derived from a subject patient is normalized to compensate for variations of FeNO with flow rate.10-01-2009
20090054798RESPIRATION MONITOR AND METHOD OF ITS OPERATION - An apparatus for monitoring the respiration of a subject, the apparatus comprises means for detecting the concentration of each of oxygen, carbon dioxide and nitric oxide in an inspired and/or exhaled gaseous stream of a subject; and a display for displaying the concentration of each of oxygen, carbon dioxide and nitric oxide. A method for monitoring the respiration of a subject comprises analysing the composition of the inspired and/or exhaled gas of the subject and determining the concentration of carbon dioxide, oxygen and nitric oxide in the gas; and displaying the results of the analysis on a display to provide an indication of the respiratory state of the subject. A method of determining the extent of resuscitation of a patient comprises measuring the concentration of carbon dioxide, oxygen and nitric oxide in the inspired gas stream and/or exhaled gas stream of the subject.02-26-2009
20090054799Biosensor system with a multifunctional portable electronic device - Some embodiments of the invention provide a biosensor system with a multifunctional portable electronic device for use by an individual. The biosensor system includes a breath delivery system with a breath sensor capable of detecting an analyte in the individual's breath. The system also includes a portable electronic device capable of receiving breath analyte data from the breath sensor and blood glucose data or other types of personal health data. The portable electronic device is capable of storing, analyzing, and/or transmitting the breath analyte data and the blood glucose data or the other types of personal health data.02-26-2009
20090099471Disordered Breathing Monitoring Device And Method Of Using Same Including A Study Status Indicator - An apparatus and associated method for collecting data for a sleep study. The apparatus includes a sensor adapted to collect data relating to a parameter of a user of the apparatus over a period of time, and a controller operatively coupled to the sensor. The controller is adapted to: (a) receive configuration information specifying a predetermined amount of valid data that is required for a sleep study to be deemed valid, (b) receive the data relating to the parameter and determine an amount of the received data that is valid, and (c) cause a study status indicator to be output by the apparatus based on the amount of the received data that is determined to be valid and the predetermined amount specified in the configuration information.04-16-2009
20080262370Gas sensor - A method of determining the respiratory function of a subject is disclosed, the method comprising measuring the concentration of water vapour in the gas stream exhaled by the subject, and from the measured water vapour concentration determining the respiratory function of the subject. Mathematical techniques for analyzing the data obtained from the measurement of concentrations of gaseous components in an exhaled gas stream are also disclosed and their use in determining the lung function of a subject.10-23-2008
20100152599ORAL APPLIANCE COMPLIANCE MONITORING SYSTEM - An oral appliance compliance monitoring system and method comprises an oral appliance suitable for wearing in a patient's oral cavity during sleeping periods, the oral appliance having one or more sensors measuring a variety of conditions such as oxygen saturation levels in the oral cavity mucosa. The data generated by the sensor is continuously transmitted to a local scanner which is in communication with a central computer. The computer interprets the data to determine if the patent is wearing the oral appliance in compliance with a prescribed treatment regimen for breathing-related sleep disorders. Remotely located computers are authorized to receive the streamed data to enable remote monitoring of compliance in real time by a plurality of patients with treatment regimens.06-17-2010
20100185112DEVICE FOR ANALYSING AN INFLAMMATORY STATUS OF A RESPIRATORY SYSTEM07-22-2010
20100262034GAS COMPONENT DETECTION DEVICE - There is provided a gas component detection device including: a gas introduction unit for introducing a specimen gas; a gas separation unit connected to the gas introduction unit; a flow path switching unit connected to the gas separation unit and having a plurality of connection flow paths for switching a flow path that is connected to the gas separation unit to any one of the plurality of connection flow paths; and a gas detection unit provided in at least one of the plurality of connection flow paths. The gas separation unit is preferably formed of a chromatography column having therein a flow path having a width and depth of micro order.10-14-2010
20100222692APPARATUS AND METHOD FOR DELIVERY OF AN AEROSOL - An apparatus for measuring lung ventilation, comprising: a pressure device to measure volume of air flow; an aerosol-generating device that provides aerosol particles to be released at a determined point in a breathing cycle; a mouthpiece with a detector that measures the concentration of aerosol particles for a given volume during the breathing cycle; and a computing device configured to provide lung ventilation data as a function of time constants.09-02-2010
20110112424DETERMINING FUNCTIONAL RESIDUAL LUNG CAPACITY - Determining functional residual lung capacity (FRC) by changing a subject's inspirium FiO05-12-2011
20090024047DEVICES AND METHODS FOR RESPIRATION THERAPY - Embodiments of the invention are related to devices and methods for respiration therapy, amongst other things. In an embodiment, the invention includes a system for providing respiration therapy to a patient, including an implantable device comprising a chronically implanted respiration sensor, the respiration sensor configured to generate a signal indicative of respiration rate of the patient; and an external interface device in communication with the implantable device, the external interface device comprising an output device and configured to deliver respiration therapy to the patient, the respiration therapy comprising one or more breathing prompts generated by the output device. In an embodiment, the invention includes a method for providing respiration therapy to a patient. In an embodiment, the invention includes a method of monitoring a heart failure patient for decompensation events. Other aspects and embodiments are provided herein.01-22-2009
20100113955ORAL-NASAL CANNULA SYSTEM ENABLING CO2 AND BREATH FLOW MEASUREMENT - An oral-nasal cannula comprising at least one nasal breath inlet for carbon dioxide (CO05-06-2010
20110028858GAS FLOW SYSTEM, ADAPTOR, AND METHOD - An airway adaptor that measures the concentration of at least one of a specific component and the flow rate of a supply gas and a return gas. The airway adapter may include a tube having a flow path in which the supply gas and the return gas passes. The tube may include a first end having a first aperture for guiding the supply gas into the flow path, and second end having a second aperture for guiding the return gas. Further, the airway adapter may include a measurement device operable to measure at least one of the supply gas and the return gas in the air flow path and a partial shielding disposed at the first aperture and structured to shield a portion of the air flow path. The supply gas may be a respiratory gas and the return gas may be inhaled or exhaled breath of a person.02-03-2011
20100036273Breath Test Device and Method - The disclosure relates breath test devices and methods for the evaluation of liver functional and metabolic capacity or to assess liver heath and/or degree of liver injury. Specifically, there is provided a method of evaluating a liver condition, the method includes on-line monitoring a metabolic product of methacetin, a salt or a derivative of methacetin, in a subject's breath after administering to the subject isotope labeled methacetin, a salt or a derivative thereof in water solution form. There is also provided a device for evaluating a liver condition, the device includes one or more sensors adapted to monitor on-line an isotope level of a metabolic product of labeled methacetin, or a salt or a derivative of methacetin in a subject's breath and a controller adapted to sample measurements of the one or more sensors at a continuous mode.02-11-2010
20100198095DEVICE,GAS MIXTURE AND METHOD FOR LUNG DIAGNOSIS - The invention relates to a lung diagnostic device, namely one for determining the ventilation homogeneity (VH) of a spontaneously breathing or artificially respirated patient as well as a gas mix for use in such a device. In this respect the difference in the composition of the exhaled test gas from the composition of the inhaled test gas serves for the evaluation of the ventilation homogeneity.08-05-2010
20100222691Method and Means for Indication of Life Function - The present invention refers to a method and a device for indication of the percentage of carbon dioxide in a person's exhaled air, when breathing occurs through a means conducting the air flow. According to the invention, a means for determining the percentage of carbon dioxide is fixed or removably connected to the means conducting the air flow. The percentage of carbon dioxide is established with regard to a lower and/or an upper boundary during determined time intervals. In presented designs of the invention, the lower boundary is 2% and the upper boundary is 7% and the time interval is 2-10 seconds. The device contains, for example, a means to indicate if the upper boundary is exceeded or if the value falls below the lower boundary at any point during the entire time interval, which can be implemented through an alarm with an audio or light signal.09-02-2010
20130131533SUBJECT INTERFACE APPLIANCE AND METHOD FOR DELIVERING A BREATHABLE SUBSTANCE TO A SUBJECT WHILE OBTAINING GAS SAMPLES FROM THE AIRWAY OF THE SUBJECT - A subject interface appliance (05-23-2013
20130131534RESPIRATORY MASK ASSEMBLY - A respiratory mask assembly is provided. The assembly includes at least one post having a nasal engaging portion on about a first end thereof for delivering treatment gases to the nasal cavity of a patient. A mask having an inlet for receiving treatment gases from a fluid source and at least one receptacle for being sealably engaged with a respective one of the at least one post for delivering treatment gases from the inlet through the receptacle and into the nasal cavity of the patient is provided. The mask is configured for selective sealable engagement with the patient's mouth, patient's nose, or both the patient's mouth and the patient's nose.05-23-2013
20100312133APPARATUSES AND METHODS FOR EXTRACTING CHEMICALS FROM BODILY CAVITIES AND BREATH - A chemical extraction apparatus has absorbent material for absorbing or adsorbing volatile chemicals from a breath of a user. The chemical extraction apparatus is positioned within such that breaths from the user flow over the absorbent material thereby causing volatile chemicals in the breaths to absorb or adsorb into the absorbent material. The absorbent material is then analyzed to determine the amount of chemicals absorbed or adsorbed into the absorbent material. Based on such analysis, various diseases or conditions can be detected or diagnosed.12-09-2010
20110009764DEVICES, SYSTEMS, AND METHODS FOR AIDING IN THE DETECTION OF A PHYSIOLOGICAL ABNORMALITY - The present invention comprises a method for excluding the presence of a pulmonary embolism using a combination of a blood test for D-dimer and a carboximetry test measuring the ratio of exhaled CO01-13-2011
20110009762PORTABLE PNEUMOTACHOGRAPH FOR MEASURING COMPONENTS OF AN EXPIRATION VOLUME AND METHOD THEREFOR - A portable pneumotachograph for determining components of the expiration volume, comprising a processor (01-13-2011
20110009763EXHALED BREATH SAMPLING WITH DELIVERY OF GAS - A system for sampling exhaled breath and for supply of a gas, the system comprising: a gas delivery cannula comprising at least one nasal prong for insertion into a nostril, the nasal prong comprising a distal end; an exhaled breath sampling cannula for insertion into the nostril, the exhaled breath sampling cannula comprising a distal end; and a connector for coupling the gas delivery cannula to the exhaled breath sampling cannula, such that the distal end of the exhaled breath sampling cannula is disposed deeper in the nostril than the distal end of the nasal prong, to reduce dilution of sampled exhaled breath by delivered gas. The connected is configured to facilitate adjustability of an insertion depth of the exhaled breath sampling cannula into said nostril.01-13-2011
20110009765Methods of Detecting Gaseous Component Levels in a Breath - Method for detecting gaseous component levels in a breath, comprising: receiving a breath through a breath channel, wherein the breath channel is in fluid communication with a flow rate sensor and an electrochemical fuel cell gas sensor; measuring a flow rate of the breath received through the breath channel; measuring a first time, wherein the first time corresponds to an amount of time elapsed while receiving the breath in the breath channel; and calculating a current gaseous component level utilizing the flow rate, first time and an output from the gas sensor. Methods for detecting an error condition while measuring gaseous component levels in a breath comprising: determining if the peak output occurs while breath is still being received in the breath channel; and if the peak output occurs while breath is still being received in the breath channel, alerting a user of an error condition.01-13-2011
20110245705DETERMINING THE FUNCTIONAL RESIDUAL CAPACITY OF A SUBJECT - A system and method that determine the functional residual capacity of a subject in an automated manner. The determination of the functional residual capacity of the subject is made by analyzing the washout and/or wash-in of one or more molecular species present in gas breathed by the subject. The determination of the functional residual capacity can be made without a determination of oxygen consumption.10-06-2011
20100063408Breathalyzer having pivoted mouthpiece - A breathalyzer includes a housing and incorporates a mouthpiece pivotally mounted in the housing and movable between a first, retracted position for reducing the exposure of the mouthpiece to damage and contaminants and a second, extended position for receiving exhaled breath of a person.03-11-2010
20110178420METHODS AND APPARATUSES FOR IMPROVING BREATH ALCOHOL TESTING - Some embodiments of the present invention provide methods and apparatuses for improving the performance and utility of breath alcohol measurements through the use of multivariate spectroscopy. In some embodiments, the spectroscopic breath measurement can be combined with multivariate spectroscopic tissue alcohol and/or tissue biometric measurements in order to overcome the limitations encountered by existing breath alcohol measurement devices.07-21-2011
20110098591CARBON NANOTUBE STRUCTURES IN SENSOR APPARATUSES FOR ANALYZING BIOMARKERS IN BREATH SAMPLES - The present invention provides a system for measuring biomarker analytes indicative of various diseases comprising an array of sensors sensitive to volatile organic compounds. Particularly, the system is composed of a random network of single-walled carbon nanotubes (SWCNTs) coated with non-polar small organic molecules in conjunction with learning and pattern recognition algorithms. Methods of discriminating between breath samples of healthy individuals and of lung cancer patients are disclosed.04-28-2011
20100069770END-TIDAL CO2 MONITORING TUBE HOLDER - Devices for attaching medical tubing to a nasal cannula are provided. Such devices may comprise a body having a distal end and a proximal end, a connector disposed on the body and adapted to releasably attach the body to the nasal canulla, and one of the following: at least one tube holding member extending along at least one surface of the body and adapted to accept the medical tubing, or at least one body channel extending through the body and having an outlet at the distal end of the body, and a tube connector attached to the proximal end of the body and adapted to fluidly connect the medical tubing the at least one channel.03-18-2010
20110082380Bymixer Apparatus and Method for Fast-Response, Adjustable Measurement of Mixed Gas Fractions in Ventilation Circuits - Bymixer devices and methods for sampling or obtaining data from mixed respiratory gases in a ventilation circuit. Respiratory gasses from a plurality of consecutive breaths become mixed within a mixing chamber of the bymixer and samples or data are obtained from such mixed respiratory gasses. Optionally, the volume of the mixing chamber and/or the resistance to flow into or through the mixing chamber may be selectable or adjustable.04-07-2011
20110098592METHODS, APPARATUS AND SYSTEMS FOR MONITORING CO2 - There is provided herein methods, apparatus and systems for evaluating carbon dioxide (CO04-28-2011
20110077544METHOD FOR OPTIMIZING THE GAS CONVERSION RATE IN A RESPIRATORY GAS ANALYZER - A method for optimizing a gas conversion rate in a respiratory gas analyzer, more particularly for nitric oxide (NO) in the respiratory gas, and an associated device are disclosed.03-31-2011
20080262369Capnographic Sampling Catheter - The present invention seeks to provide a system for analyzing the exhaled breath of a subject, including a gas analyzer, sensitive to at least one component of the exhaled breath and a gas sampling catheter having a first end and a second end, the first end being in fluid flow communication with the gas analyzer, wherein the gas sampling catheter has a plurality of exhaled breath sampling holes formed therein.10-23-2008
20120302909METHODS AND SYSTEMS FOR SCREENING SUBJECTS - A screening method can be used to determine whether a subject is a suitable candidate for interventional therapy. The method can be used to determine the likelihood the subject will receive a therapeutic effect from denervation therapy. The determination is based, at least in part, on lung information obtained by performing lung function tests with and without treating the subject's lungs with a test agent. Based on the response to a test agent, the subject's response to a therapy is predicted.11-29-2012
20120302908ORAL END TIDAL CARBON DIOXIDE PROBE FOR DIAGNOSING PULMONARY ARTERIAL HYPERTENSION - This disclosure concerns improved capabilities for evaluating pulmonary arterial hypertension (PAH). A system and method of evaluating PAH in a subject may include measuring end tidal partial pressure of exhaled carbon dioxide in the subject, wherein the measurement is made orally using described systems or devices. Integrated sensors enable the measurement and characterization of other respiratory gas components, some of which may be indicative of disease. The system and method can be used to monitor a course of treatment for PAH.11-29-2012
20120302907System and Method for Drug Detection in Exhaled Breath - A portable system (11-29-2012
20100312134Apparatus for Evaluation of a Device for Measuring Lung Diffusion Capacity - A test apparatus for evaluating a measuring device for measuring a diffusion capacity of a person's lungs by measuring a change of concentration of a gas species in a mixture, when the mixture is inhaled and subsequently exhaled by a person, wherein the test apparatus includes (a) a port for connecting to the measuring device; (b) a compartment coupled to the port; (c) a circulation circuit configured to circulate gas from the compartment back to the compartment; and (d) a gas species removing element configured to selectively reduce a partial pressure of the gas species at a point in the circulation circuit.12-09-2010
20110213264SENSOR ON NON-SEALING PORTION OF TRACHEAL TUBE CUFF - Various embodiments of a tracheal tube having a sensor disposed on a non-sealing portion of a cuff are provided. Certain embodiments of the tracheal tube may be capable of deploying the sensor during intubation to sense one or more indicators of blood flow characteristics, such as a level of blood gases and/or blood analytes, in the respiratory tract. The sensor on the cuff may be configured to deploy upon inflation of the cuff and to return to its predeployment position upon deflation of the cuff. The sensor may be further adapted to abut the tracheal mucosa of a patient or not contact the tracheal wall at all during deployment.09-01-2011
20100262033ENDOSCOPIC BITE BLOCK - There is provided herein, a bite block (10-14-2010
20100004554Multi-functional, discrete and mutually exclusive method for determining the parameters of gases in a gaseous mixture and the device for realizing the proposed method - Method and device for detection and quantitative and qualitative analysis of components in a gaseous mixture distinguished by high selectivity and high resolution.01-07-2010
20120277613METHODS OF INTRAVENOUS DRUG MONITORING - A method of monitoring a concentration of an anesthetic drug using a patient's breath is provided. The method comprises forming a breath sample using the patient's breath; exposing one or more sensors to the breath sample; detecting one or more components of the anesthetic drug in the breath sample; measuring a concentration of at least one of the components of the anesthetic drug in the breath sample; and determining a concentration of the component in a plasma of the patient using a transfer function and the concentration of the component in the breath sample.11-01-2012
20080243016Pulmonary Artery Pressure Signals And Methods of Using - Embodiments of the invention are related to methods and systems for using a pulmonary artery pressure signal to detect and/or monitor physiological parameters, physiological status, and aspects of disorders and diseases, amongst other things. In an embodiment, the invention includes a method of measuring a pulmonary function parameter of a patient. In an embodiment, the invention includes a method of detecting a sleeping disorder. In an embodiment, the invention includes a method of tracking sleep characteristics of a patient. Other aspects and embodiments are provided herein.10-02-2008
20090118632Effort-Independent, Portable, User-Operated Capnograph Devices And Related Methods - An effort-independent, portable, user-operated capnograph device for evaluating a pulmonary status of a user. At least one baseline measurement is stored within a memory of the capnograph device. The identity of a user of the capnograph device is verified to prevent miss-use. Concentrations of carbon dioxide (CO2) exhaled by the user when breathing normally are sensed and stored within the memory. The stored data is compared with the at least one of the baseline measurements to determine the pulmonary status of the user, and the determined pulmonary status is indicated to the user.05-07-2009
20100198096ENDOSCOPIC BITE BLOCK WITH ENHANCED POSITIONS - An endoscopic bite block comprising a tubular body having an upper outer surface and a lower outer surface; a front plate having an upper section and a lower section, said upper section being disposed outwardly relative to said lower section, to enable appropriate lip fitting; a teeth positioning region on at least one of said upper and lower outer surfaces; and a nasal gas channel selected from the group consisting of: a breath sampling prong and a gas delivery channel, wherein said teeth positioning region and the disposition of said sections of the front plate are configured to maintain said endoscopic bite block in a predetermined, upright position within a mouth of a subject, to enable a correct position of said nasal gas channel in relation to a nose of the subject.08-05-2010
20120203126METHOD AND APPARATUS FOR MEASURING THE CONCENTRATION OF A GAS IN EXHALED AIR - There is provided an apparatus for monitoring the respiration of a subject, the apparatus comprising a sensor for measuring the concentration of a specified gas in air exhaled by the subject and a processor configured to provide an output indicating the concentration of the specified gas in a selected portion of the exhaled air, the selected portion of the exhaled air corresponding to air from a specific part of the respiratory system of the subject.08-09-2012
20080214947Exhaled Breath Condensate Collection and Assay System and Method - A method and system that provides for minute-to-minute EBC pH monitoring (or for other EBC characteristic monitoring) of a subject that greatly assists in determining the time-course of airway pH changes (or other characteristic changes) in evolving disease processes, and may assist in determining the predictive ability of these tests, as well as determining response to therapy.09-04-2008
20120203125INHALATION MASK FOR ANIMALS - An inhalation mask (08-09-2012
20110257550Method and Apparatus for Continuous Monitoring of Exhaled Carbon Dioxide - The present invention provides for a unique modification of the intravenous catheter, attached to the terminal line of the mass spectrometer and the use of a disposable nasal oxygen cannula provide an effective and efficient port to monitor end tidal carbon dioxide (P10-20-2011
20100324439HIGH FREQUENCY AIRWAY OSCILLATION FOR EXHALED AIR DIAGNOSTICS - The present invention relates to noninvasive methods for obtaining exhaled breath condensate (EBC) samples from the airways and lungs of a subject for use in diagnosing various conditions and diseases associated with biomarkers present in EBC, including diagnosis of lung cancer. The methods of the subject invention include generating and/or applying an oscillating airflow to a subject during inhalation and/or exhalation to induce increased concentration of biomarkers in EBC; collecting EBC from exhaled breath; and analyzing the collected EBC for biomarkers associated with disorders and/or diseases.12-23-2010
20100121210METHOD AND DEVICE FOR DETECTION OFANALYTE IN VAPOR OR GASEOUS SAMPLE - A method and system for electrochemical detection of an analyte in a vapor or gas sample is provided. The method and system include exposing a vapor or gas sample to an electrochemical sensor comprising one or more electrodes and a coating that surrounds the one or more electrodes, which coating is capable of partitioning the analyte directly from the vapor or gas sample. The method and system include detecting an oxidation/reduction current during the exposing, wherein the detected current relates to a concentration of analyte in the vapor or gas sample.05-13-2010
20110087122MINIMALLY INVASIVE DETERMINATION OF COLLATERAL VENTILATION IN LUNGS - Minimally invasive methods, systems and devices are provided for qualitatively and quantitatively assessing collateral ventilation in the lungs. In particular, collateral ventilation of a target compartment within a lung of a patient is assessed by advancement of a catheter through the tracheobronchial tree to a feeding bronchus of the target compartment. The feeding bronchus is occluded by the catheter and a variety of measurements are taken with the use of the catheter in a manner which is of low risk to the patient. Examples of such measurements include but are not limited to flow rate, volume and pressure. These measurements are used to determine the presence of collateral ventilation and to quantify such collateral ventilation.04-14-2011
20100137733BREATH ANALYSIS SYSTEMS AND METHODS FOR ASTHMA, TUBERCULOSIS AND LUNG CANCER DIAGNOSTICS AND DISEASE MANAGEMENT - Methods and systems are disclosed for the detecting of whether a subject has a lung disorder such as asthma, tuberculosis or lung cancer. Monitoring the subject's health and prognosis is also disclosed.06-03-2010
20110201957CARBON DIOXIDE MONITORING SYSTEM - A CO2 monitoring system (08-18-2011
20120150055BREATH END-TIDAL GAS MONITOR - An improved apparatus and method for capturing and analyzing the end-tidal portion of an exhalation. The CO06-14-2012
20100016750Pattern Recognition System for Classifying the Functional Status of Patients with Pulmonary Hypertension, Including Pulmonary Arterial and Pulmonary Vascular Hypertension - A method employing pattern recognition techniques for identifying the functional status of patients with Pulmonary Hypertension is described. This method describes a process by which sets of cardiopulmonary exercise gas exchange variables are measured during rest, exercise and recovery and stored as unique data sets. The data sets are then analyzed by a series of feature extraction steps, yielding a multi-parametric index (MPI01-21-2010
20110066060APPARATUS AND METHOD FOR DIAGNOSTIC GAS ANALYSIS - A handheld, small but accurate and reliable device for diagnostic NO measurements using a NO sensor, where the parameters governing the taking of the sample are different from the parameters optimal for the accuracy of said NO sensor I described. By temporarily storing a portion of the exhaled air, and feeding this to the sensor at a flow rate adapted to the NO sensor, the accuracy and sensitivity of a system/method involving NO sensors, in particular electrochemical NO sensors, can be increased. The method for diagnostic NO measurements comprises steps for controlling the inhalation of NO free air, as well as the exhalation, both by built-in means and by audible and/or visual feedback to the patient.03-17-2011
20090118633End-Tidal Gas Estimation System and Method - An apparatus and method of using an end-tidal gas value taken from an non-intubated patient that includes measuring a plurality of gas concentration values, determining an end-tidal gas value from the gas concentration values, and reporting the end-tidal gas value for a breath as the greater of either: (a) a maximum gas concentration values observed during such a breath, or (b) the end-tidal gas value reported for a previous breath decreased by a maximum allowable breath-to-breath percent change.05-07-2009
20120232419ANALYZER FOR NITRIC OXIDE IN EXHALED BREATH WITH MULTIPLE-USE SENSOR - A high-sensitivity analyzer for nitric oxide in exhaled breath at levels of 200 ppb or less with a sensor containing cytochrome C is rendered capable of multiple uses without the need for installing a new sensor for each use. This capability is achieved by regenerating the analyzer after each use by purging the sensor and surrounding regions with NO09-13-2012
20110098589COMBINATION OF INERT GAS REBREATHING AND MULTIPLE-BREATH WASH-OUT TECHNIQUES FOR DETERMINATION OF INDICES OF VENTILATION INHOMOGENEITY - The present invention discloses a method to determine the lung clearance index (LCI) or other indices of ventilation inhomogeneity of the lungs by combining two pulmonary gas exchange techniques; Inert gas rebreathing (IGR) is used for rapid wash-in of the inert tracer gas and for accurate determination of the functional residual capacity (FRC) by gas analysis alone. This is followed by multiple-breath wash-out (MBW) for determination of the cumulative expired volume (V04-28-2011
20110098590METHODS AND APPARATUSES FOR DETECTING ANALYTES - An apparatus for measuring a quantity of an analyte, such as an aldehyde, contained in a breath sample includes a breath collection device and a measurement device. The breath collection device includes a breath inlet area, a breath outlet area, and a reaction chamber. The reaction chamber can include a reagent that is colorimetrically reactive with one or more aldehydes. The measurement device includes a light emitting device and a light measuring device and is configured to provide a quantitative value indicative of the amount of aldehydes present in the breath sample.04-28-2011
20120310104NITRIC OXIDE MEASUREMENT METHOD AND APPARATUS - There is provided a method of determining at least one parameter value relating to nitric oxide, NO, production in the lower respiratory tract of a subject, the method comprising obtaining a plurality of measurements of NO levels in exhaled air and air flow rate during multiple exhalations of a subject performing tidal breathing; analyzing the plurality of measurements to identify exhalations where the NO produced in the lower respiratory tract dominates the NO contribution from other sources; determining at least one parameter value relating to NO in the lower respiratory tract of the subject from the measurements of NO levels and/or air flow rate obtained during the identified exhalations.12-06-2012
20120016252SYSTEM AND METHOD FOR MONITORING HEALTH USING EXHALED BREATH - The present invention includes systems and methods for monitoring endogenous compound concentration in blood by detecting markers, such as odors, upon exhalation by a patient, wherein such markers are the endogenous compound itself or result from the endogenous compound. In the case of olfactory markers, the invention preferably utilizes electronic sensor technology, such as the commercial devices referred to as “artificial” or “electronic” noses or tongues, to non-invasively monitor endogenous compound levels in blood. The invention further includes a reporting system capable of tracking endogenous compound concentrations in blood (remote or proximate locations) and providing the necessary alerts with regard to emergent or harmful conditions in a patient.01-19-2012
20120016251System for Respiration Data Processing and Characterization - A system for respiration or cardiac condition characterization and abnormality detection includes an interface that receives data representing a signal indicating concentration of carbon dioxide in patient gases over multiple signal cycles. A signal processor uses the received data in determining multiple amplitude related characteristic values. A comparator compares at least one of the amplitude related characteristic values or a value derived from the amplitude related characteristic values, with a threshold value to provide a comparison indicator. A patient monitor in response to the comparison indicator indicating an amplitude related characteristic value or a value derived from the amplitude related characteristic values, exceeds the threshold value, generates an alert message associated with the threshold.01-19-2012
20120022388SYSTEM AND METHOD FOR MONITORING PULMONARY CONGESTION - A system and method are implemented to identify pulmonary congestion in a subject. The system and method detect pulmonary congestion in a subject based on one or more parameters of the breathing of the subject. The detection of pulmonary congestion in the subject may be relatively passive for the subject. This may enhance the convenience and/or comfort of compliance to a detection regime by the subject. By detecting pulmonary congestion in the subject, potential episodes of heart failure may be identified and/or averted. The system and method may be configured to facilitate treatment of the subject to remediate detected pulmonary congestion and/or avert potential episodes of heart failure. For example, the system may provide enhanced access for a caregiver to detections of parameters related to pulmonary congestion in the subject.01-26-2012
20120065535GAS ANALYSIS APPARATUS HAVING A COMBINATION OF GAS DEHUMIDIFIER AND GAS CONVERTER - An apparatus for measuring nitrogen monoxide in exhaled air by way of a gas sensor unit (03-15-2012
20120065534DIAGNOSTIC NANOSENSOR DEVICE AND METHOD FOR BREATH ANALYSIS - A hand-held portable device detects the concentration of gas such as ammonia, and displays the concentration, by whether it exceeds a threshold and/or in numerical concentration.03-15-2012
20120065533Positive Airway Pressure System and Method - A CPAP system and method which allows the control of released gases from the patient circuit. Coordination of blower speeds and the amount of released gases to improve patient therapy are disclosed. Methods and systems to control patient CO2 retention within the patient mask and to measure patient metabolic function are disclosed.03-15-2012
20120157871INTERACTIVE BLOOD-ALCOHOL CONTENT TESTER - A blood-alcohol content (BAC) tester for use at a facility serving alcohol. The BAC tester includes a breath-sampling unit having an air-chamber unit defining a closed position and an open position. The air-chamber unit has a first air-chamber block and a second air-chamber block, the first air-chamber block and the second air-chamber block defining an air chamber for receiving air exhaled from a user. The breath-sampling unit also includes a drive unit coupled to the second air-chamber block and an alcohol sensor. The BAC tester also includes a sensor circuit communicatively coupled to the drive unit and the alcohol sensor. The sensor circuit is configured to cause the drive unit to move the second-air chamber block relative to the first air-chamber block so as to cause the air-chamber unit to be in the closed or the open position.06-21-2012
20090124918Apparatus For Spectroscopically Analyzing A Gas - The invention relates to an apparatus for spectroscopically analysing a gas, said apparatus having at least one radiation source (05-14-2009
20110066061WIRELESS CAPNOGRAPHY - According to some embodiments, there is provided a breath monitoring device and system that includes a patient interface unit, adapted to be positioned on the patient head, said patient interface unit comprises a cannula, adapted to collect a sample of exhaled breath from a patient; and a platform unit which includes: i. one or more CO03-17-2011
20110105935VENTILATION ANALYSIS AND MONITORING - A ventilation analysis system comprising an interface module adapted to receive a carbon dioxide (CO2) signal and a breath flow dynamics signal, and control logic adapted to produce a ventilation indicator, based on a mutual analysis of the CO2 signal and the breath flow dynamics signal. The ventilation indicator may be, for example, an estimated CO2 waveform, an End-Tidal CO2 (ETCO2) value, and/or a minute CO2 value.05-05-2011
20110105934IMPROVEMENT IN THE PRECISION OF XENON CONTENT MEASUREMENT IN A VENTILATORY ANESTHESIA APPARATUS - The invention relates to an apparatus for the ventilatory anaesthesia of a patient by administration of a gas containing gaseous xenon that comprises a main gas circuit (CP) and a means for determining the xenon content (S05-05-2011
20120123288METHOD AND APPARATUS OF DETERMINING EXHALED NITRIC OXIDE - A method and apparatus of determining the level of exhaled nitric oxide (NO) is disclosed. The method involves measuring the level of exhaled NO (05-17-2012
20120123287PORTABLE DEVICE FOR BREATHING DETECTION - A device for detecting breathing of a subject, includes a colorimetric CO2 detector. A method for determining whether a subject is breathing and a method for verifying proper placement of an endotracheal tube when using a resuscitation bag are also described.05-17-2012
20090131810Breath test device and method - There is provided a method of evaluating a liver condition of a subject, the method includes computing a fluctuation parameter from a liver breath test based on at least one of a percentage dose recovery (PDR) curve and a delta over baseline (DOB) curve of an isotope labeled methacetin, or a salt or a derivative thereof, and evaluating at least one liver condition of the subject, based at least on the fluctuation parameter. There is provided herein a method of evaluating a liver condition of a subject, the method includes computing a hepatic impairment score based at least on a breath test related parameter and on a demographic parameter.05-21-2009
20120165693Detection of Respiratory System Lesions - Humidity profiles of exhaled air of individuals obtained using a sensor to detect water vapour content or temperature versus time of exhalation may exhibit an irregularity indicative of a space-occupying respiratory system lesion. Detection of such irregularities provides an inexpensive and rapid means of pre-screening individuals for lung cancer diagnosis, and is applicable even to individuals with other respiratory disorders such as asthma and COPD.06-28-2012
20120130264NASAL AIR JET INSUFFLATOR - The present invention provides an apparatus for nasally delivering a supraglottic jet ventilation and methods of treating breathing disorders by utilizing the apparatus for nasally delivering a supraglottic jet ventilation.05-24-2012
20120165694BREATH AND BREATH CONDENSATE ANALYSIS SYSTEM AND ASSOCIATED METHODS - A system for collecting an exhaled breath sample and exhaled breath aerosol from a subject includes a condensation chamber having an outer wall defining an interior space. The outer wall has an inlet port and an outlet port therethrough in fluid communication with the interior space. The inlet port is placeable in fluid communication with an exhaled breath sample of the subject. A condensation element is positioned within the condensation chamber interior space and has a shape tapering downwardly toward a bottom tip thereof. A condensation of fluid on the condensation element is enhanced through various elements. A collection area is positioned within the condensation chamber's interior space beneath the condensation element bottom tip. The collection area is for collecting condensate accumulating on an outer surface of the condensation element and dropping from the tip thereof.06-28-2012
20120215125SYSTEM AND METHOD OF MONITORING BREATHING - Sidestream sampling of gas to determine information related to the composition of gas at or near the airway of a subject is implemented. From such information one or more breathing parameters of subject 08-23-2012
20120215124NON-INVASIVE ARTERIAL BLOOD GAS DETERMINATION - A breathing circuit for use in conjunction with a ventilator serving a mechanically-ventilated patient includes an expiratory gas airflow pathway; an inspiratory gas airflow pathway; and a gas mixing mechanism operable to mix inspiratory gas and expiratory gas in an amount sufficient to equilibrate the patient's P08-23-2012
20100204600Apparatus and method for passive testing of alcohol and drug abuse - An automated system and method for passive testing of alcohol and drug abuse. The system enters a participant or subject into the system who is to be monitored during a probationary or other program for alcohol or drug abuse offenders. The system provides a drug testing home device or a drug testing kiosk device for use by the participant. The system enrolls the biometrics information of the participant into the computer system (e.g., finger print, voice, image, volatile compound organic gas level, and pH level). When the participant is to be tested in accordance with a testing schedule, the system validates these same biometrics of the participant, conducts the test, and then analyzes the test information for determining if the participant has been using alcohol or other drugs and should be subjected to a confirming urinalysis exam.08-12-2010
20120136268PHOTO-IONIZATION DETECTORS AND ASSOCIATED METHODS THEREOF - A photo ionization detector (PID) is provided for selectively determining various compounds or gases present in a breath sample. The PID, comprises a substrate comprising a gas ionization chamber, at least one pair of ion sensing electrodes, and at least one amplifying circuit; and an ultraviolet (UV) ionization source to transmit a UV light beam into the gas ionization chamber. A system comprises the PID is also provided. A method of detecting a response pattern for various compounds or gases in breath using PID is also provided.05-31-2012
20120136270Methods and Systems for Presenting an Inhalation Experience - Methods, computer program products, and systems are described that include detecting in an exhalant at least one indication of bioactive agent use by an individual and altering at least one artificial sensory experience at least partly based on the at least one indication of bioactive agent use by an individual.05-31-2012
20120136269LIQUID SEPARATION APPARATUS FOR REMOVING A LIQUID FROM A RESPIRATORY GAS AND RESPIRATORY GAS ANALYZING SYSTEM - A liquid separation apparatus for removing a liquid from a respiratory gas is provided. The liquid separation apparatus comprises a housing that comprises an input, wherein a sample withdrawn from the respiratory gas is delivered through the input; a first output wherein at least part of the sample of the respiratory gas is discharged through the first output; and a first filter configured to remove the liquid from the sample of respiratory gas flowing through the input and the first output of the housing. The first filter comprises a hydrophobic property and an oleophobic property to remove the liquid when a surface tension of the liquid is lower than a surface tension of bodily fluids.05-31-2012
20120172740Oxygen Mask - An anatomical shaped oxygen face mask with ports allows medical procedures to take place while the mask remains affixed to patient's face covering both mouth and nose. The mask is specially designed to allow the patient to ventilate spontaneously while at the same time instrument to access is provided by means of ports located at the front of the mask. One port may be used for procedures while an other port can be used for suctioning of secretion and blood.07-05-2012
20120226181Non-Invasive Method for Assessing Tissue Perfusion in a Patient - The present invention pertains to a non-invasive way of assessing tissue perfusion in a patient, especially for treatment follow-up and prognosis of septic shock. More specifically, tissue perfusion is assessed by measuring the cutaneous partial pressure of carbon dioxide of said patient, for example at ear lobe with a PCO09-06-2012
20120190997MAIN STREAM GAS ANALYZING DEVICE - A main stream gas analyzing device for measuring a concentration of a trace gas present in a gas stream and a method of measuring the concentration of the trace gas is disclosed. The main stream gas analyzing device includes a measuring chamber for receiving a gas flow, an infrared reflective material provided on an inner surface of the measuring chamber, an infrared radiation source directed toward the infrared reflective material of the measuring chamber and obliquely angled relative to a longitudinal axis of the measuring chamber such that infrared radiation being emitted from the infrared radiation source is reflected off of the infrared reflective material at least once, and an infrared radiation detector obliquely angled relative to the longitudinal axis of the measuring chamber to receive the reflected infrared radiation.07-26-2012
20130018274SYSTEM AND DEVICE FOR TESTING PULMONARY FUNCTION - A method for analyzing lunch function includes receiving, at a signal generating device, an output of a respiratory maneuver, where the output of the respiratory maneuver includes one or more respiratory parameters. The method also includes producing, at the signal generating device, a signal corresponding to the output of the respiratory maneuver based on the one or more respiratory parameters, wherein the signal describes one or more characteristics of the respiratory maneuver. The method further comprises transmitting the signal from the signal generating device to a signal receiving device at a remote location over a network.01-17-2013
20100305464NEONATAL COLORIMETRIC CARBON DIOXIDE DETECTOR - An application for a neonatal calorimetric carbon dioxide detector has a calorimetric carbon dioxide detector membrane having a pH-sensitive chemical indicator that undergoes calorimetric change in the presence of carbon dioxide. The detector has a patient orifice in fluid communication with the baby's airway and a respiration equipment orifice connected to a breathing system. The patient orifice is connected to a breathing tube and when the breathing tube is inserted correctly into the trachea, as the baby exhales, carbon dioxide interacts with the calorimetric membrane which changes color based upon the concentration of carbon dioxide. The neonatal calorimetric carbon dioxide detector adds a volume of less than or equal to 1 mL after being attached to a breathing circuit.12-02-2010
20080300501Fluid Analyser - A gas analyser (12-04-2008
20110004113METHOD FOR CONTROLLING AND/OR REGULATING A TRAINING AND/OR REHABILITATION UNIT - The invention relates to a method for controlling and/or regulating a training and/or rehabilitation unit, wherein a) a sensor unit is used in the flow of inspiration and expiration air of a person or an animal using the training and/or rehabilitation unit, b) physiological parameters of ventilation and/or gas exchange of the person or the animal are determined using the respiratory gas composition and/or breath volume measured using the sensor unit, c) one or more maximum performance variables are determined on the basis of the determined parameters under submaximal loading, using a regression function and/or by limit loading to the maximum performance capability, and d) a resistance or brake arrangement of the training and/or rehabilitation unit is controlled and/or regulated as a function of at least one of the determined maximum performance variables.01-06-2011
20120265089SYSTEM AND METHOD FOR DETECTING VALID BREATHS FROM A CAPNOMETRY SIGNAL - Based on a capnometry signal, one or more breathing parameters of a subject are determined that require valid breaths by the subject to be distinguished from anatomical events that cause the CO10-18-2012
20110046497SENSOR PLATFORM FOR RESPIRATORY GAS ANALYSIS - An appliance is disclosed for measuring at least one gas analyte in exhaled air. In at least one embodiment, the appliance includes an inlet opening for the introduction of exhaled air (mouthpiece), at least one measuring chamber for receiving a sensor unit, and a conduit which provides a fluid connection from the opening to the measuring chamber, and wherein, depending on the gas analyte that is to be measured, a sensor unit with a suitable gas sensor can be introduced into the receiver.02-24-2011
20100228141Tamper resistant receptacle where access is actuated by breath samples and method of manufacturing the same - A sealing apparatus including an inlet for receiving a first breath sample from a user for fastening the sealing apparatus to an external device, the first breath sample including a plurality of organic compounds or molecules, a select combination of the plurality of organic compounds or molecules being used to create a unique breath profile; and a module for analyzing and storing the first breath sample as the unique breath profile; wherein the inlet further receives a second breath sample and compares the second breath sample with the first breath sample to determine whether access to the external device is permitted.09-09-2010
20100241019EXHALED BREATH CONDENSATE BIOMETRIC MARKER MEASUREMENT APPARATUS AND METHOD - The present invention includes an apparatus and a method for testing exhaled breath condensate for at least one biometric marker, including a substrate for collecting exhaled breath condensate, the substrate capable of being brought to a temperature below a dew point of vapor in exhaled breath, a collector for retaining the substrate and for receiving a biometric marker reagent. The invention may further include receiving exhaled breath in a collector, the collector comprising a substrate, the substrate being at a temperature below a dew point of vapor in exhaled breath, collecting the exhaled breath condensate on the substrate, and bringing a biometric marker reagent in contact with the substrate.09-23-2010
20120089041ULTRASOUND-OBSERVABLE, RESPIRATORY GAS-WARMING, PARAMETER-SENSING ENDOTRACHEAL TUBE - An ultrasound observable endotracheal tube, according to a specific embodiment of the present invention, has a flexible body surrounding an airway lumen and includes an ultrasound-reflecting element making the tube visible within the body using ultrasound. In another specific embodiment, an endotracheal tube includes a heating member used for warming inhaled respiratory gases. Another specific embodiment of an endotracheal tube includes a sensor for measuring pressure exerted between an inflation cuff and a patient's tracheal tissues for preventing injury from over/under cuff inflation. Yet another specific embodiment of an endotracheal tube includes a sensor for measuring a CO04-12-2012
20120330176NASAL CANNULA FOR CARBON DIOXIDE SAMPLING - A device to facilitate carbon dioxide sampling in the exhalation breath of a person comprising a single nasal prong (12-27-2012
20120330175BREATH ALCOHOL SAMPLING SYSTEM WITH SPIROMETRIC CLIENT IDENTITY CONFIRMATION - An system for monitoring alcohol in the breath of a test client confirms the identity of the test client based on spirometric data. The system includes a sample chamber receiving a breath sample, an alcohol sensor measuring the alcohol content of the breath sample, and a spirometric sensor generating spirometric data from the breath sample over the test clients entire exhalatory phase. A processor analyzes the spirometric data with stored client characterization data for a known client to confirm the identity of the test client. The client characterization data can be a probability density in a phase space in which at least two spirometric variables (e.g., flow and volume time-series data) are correlated.12-27-2012
20120289851CARBON-DIOXIDE SAMPLING DEVICE FOR NONINVASIVELY MEASURING CARBON DIOXIDE IN EXHALED BREATH - A carbon-dioxide sampling device for non-invasively measuring carbon dioxide in exhaled breath. The device includes a breath-sampling chamber and a carbon-dioxide collector. The breath-sampling chamber is configured to be disposed over a respiratory opening of a patient, and is also configured to seal with the patient's face preventing unintentional leakage of respiratory gases from the chamber. The carbon-dioxide collector is disposed in the breath-sampling chamber in fluid dynamic isolation from the respiratory gases. Moreover, the carbon-dioxide collector is configured to be disposed in proximity to, and outside of, the respiratory opening of the patient, and to collect a sample of exhaled breath from the patient.11-15-2012
20120150056APPARATUS AND METHODS FOR TESTING APPARATUS INCLUDING ON-BOARD INSTRUCTIONAL VIDEOS AND UPLOAD/DOWNLOAD DATA CAPABILITIES - A breath testing apparatus is provided with on-board “Instruction Manual” tutorials incorporated in a display device installed in the device. Alternatively, on-board instructional videos can be added to various objects or processes requiring instructions.06-14-2012
20100168599RESPIRATORY COMPONENT MEASUREMENT SYSTEM WITH INDICATING ELEMENTS - A respiratory component measurement system that includes an airway adapter adapted to be placed in fluid communication with an airway of a patient and a sensor element in physical communication with the airway adapter. The sensor element is adapted to detect an orientation related characteristic of the airway adapter, a motion related characteristic of the airway adapter, or both. A respiratory component sensor is also adapted to be disposed on the airway adapter so as to measure a characteristic associated with a flow of gas through the airway adapter. An indicating element coupled to the respiratory component sensor is adapted to output a representation of the orientation related characteristic.07-01-2010
20130023782GAS SENSOR, ANALYZER AND METHOD FOR MEASURING OXYGEN CONCENTRATION OF A RESPIRATORY GAS - A gas sensor is disclosed herein. The gas sensor includes an emitter for emitting radiation to a body at least partly coated with a luminophore emitting luminescent radiation indicative of an oxygen concentration when in contact with a respiratory gas. The gas sensor also includes a filter for transmitting the luminescent radiation emitted by the luminophore and an oxygen detector for receiving the luminescent radiation transmitted by the filter. The gas sensor also includes an infrared thermometry unit for receiving a thermal radiation from the luminophore. A gas analyzer and a method for measuring oxygen concentration of a respiratory gas are also provided.01-24-2013
20080243017BREATHING SOUND ANALYSIS FOR ESTIMATION OF AIRLOW RATE - Apparatus for use detection of apnea includes a microphone mounted in the ear of the patient for detecting breathing sounds and a second external microphone together with an oximetric sensor. A transmitter at the patient compresses and transmits the signals to a remote location where there is provided a detector module for receiving and analyzing the signals to extract data relating to the breathing. The detector uses the entropy or range of the signal to generate an estimate of air flow while extracting extraneous snoring and heart sounds and to analyze the estimate of air flow using Otsu's threshold to detect periods of apnea and/or hypopnea. A display provides data of the detected apnea/hypopnea episodes and related information for a clinician.10-02-2008
20080228096End-Tidal Gas Estimation System and Method - An apparatus and method of indicating the reliability of an end-tidal gas value that includes measuring a plurality of gas concentration values, measuring a plurality of ventilation values, determining an end-tidal gas value from the gas concentration values, determining the degree of ventilatory stability from the ventilation values, and providing an estimate of reliability of the end-tidal gas values using the degree of ventilatory stability.09-18-2008
20130172768Intubation-Facilitating Oxygen Mask - A versatile, intubation-facilitating oxygen mask is provided including at least one diaphragm configured with a continuous, flexible, modifiable membrane from which an instrument-access port may be manually constructed, when and if needed. The novel oxygen mask preferably includes a multiple-inlet port having a standard oxygen tube connector and an interchangeable breathing-therapy device connector, a carbon dioxide sampling port, an exhaust port, and a nose clip. The mask can be worn as a standard oxygen mask during traditional oxygen therapy, yet quickly converted into an intubation mask. The clinician manually perforates the nasal and/or oral membranes of the one or more diaphragms to create a point and size of entry perfectly matched to the requirements for a variety of procedures that may be performed involving nasally or orally introduced scopes or probes—without disturbing the ongoing benefits of increased oxygen saturation and continuous monitoring of expired gases.07-04-2013
20080221469FITTING AND FLUID-CONVEYING DEVICE CONNECTED THERETO - A fitting for a fluid-conveying conduit. The fitting includes integrally-formed clamps that can be used to secure the conduit in a locking relationship so that likelihood of leakage and separation of the fitting and the conduit is reduced. In one form, the fitting and conduit can be used as a moisture exchange device. In a more particular form, the conduit wall of the moisture exchange device includes a water-permeable material such that a humidity level in the conduit can be controlled. Since the fitting is formed separately from the end of the conduit to which it is to be attached, fabrication cost and complexity is reduced.09-11-2008
20130102915END-TIDAL CO2 MONITORING TUBE HOLDER - Devices for attaching medical tubing to a nasal cannula are provided. Such devices may comprise a body having a distal end and a proximal end, a connector disposed on the body and adapted to releasably attach the body to the nasal cannula, and one of the following: at least one tube holding member extending along at least one surface of the body and adapted to accept the medical tubing, or at least one body channel extending through the body and having an outlet at the distal end of the body, and a tube connector attached to the proximal end of the body and adapted to fluidly connect the medical tubing the at least one channel.04-25-2013
20080208071Measurement of Gastric Acid Secretion - A method of measuring the amount of gastric secretion in a mammal involves administering a substance or formulation containing an excess quantity of a water-insoluble carbonate to the mammal to react with acid in the stomach, in which the insoluble carbonate is enriched with at least one isotope selected from 08-28-2008
20080200825Sidestream Gas Sampling System with Detachable Sample Cell - A sidestream sampling system includes a sidestream gas measurement assembly and a sample cell configured to be assembled therewith. The sidestream gas measurement assembly includes a receptacle for removably receiving at least a portion of the sample cell. The sample cell is coupled to a sampling tube that is configured to communicate with an airway of an individual. When the sample cell is assembled with the sidestream gas measurement assembly, a window of the sample cell is oriented toward a corresponding source and/or detector of the sidestream gas measurement assembly to facilitate monitoring of an amount of at least one gas or vaporized material in an individual's respiration.08-21-2008
20080200824Devices, systems, and methods for aiding in the detection of a physiological abnormality - The present invention includes a system and device for aiding in the diagnosis of a physiological abnormality resulting in detectable, measurable variations in contents of breathed air. The system includes a handheld unit defining an airway, wherein the airway includes a plurality of sensors adapted to measure a plurality of parameters related to the presence of a physiological abnormality. The system further includes a control unit remotely connected to the handheld unit. The control unit includes a controller adapted to receive input signals from the handheld unit and remit output signals in response thereto. The output signals are usable by a user in determining the presence or absence of a physiological abnormality. The control unit further also can include a display adapted to display the output signals to a user thereby easing the determination of the physiological abnormality. The system further includes a mouthpiece selectively connectable to the handheld unit. The mouthpiece can include a filter adapted to substantially prohibit the passage of germs into the airway of the handheld unit.08-21-2008
20100286544METHODS AND DEVICES FOR ASSESSMENT OF PNEUMOSTOMA FUNCTION - A pneumostoma assessment and treatment system includes methods and devices for aftercare of a pneumostoma. In particular, methods and devices are provided for standardized monitoring and assessment of pneumostoma patency thereby facilitating the establishment of standards-based protocols for pneumostoma management. Methods of standardized pneumostoma patency assessment includes the use of devices for raising alveolar pressure to a controlled repeatable pressure above ambient while analyzing gas flow through the pneumostoma. In response to an assessment the functionality of the pneumostoma, the tissues of the pneumostoma may be treated with a treatment device utilizing one or more different modalities to preserve or enhance the health and function of the pneumostoma.11-11-2010
20110237969GAS SAMPLING LINE - A gas sampling line having a channel for conducting respiratory gases from a patient respiratory interface to a gas monitor, the gas sampling line comprising, i.a., a gas sampling tube comprised of a polyether block amide material, the polyether segments of which comprise polyethyleneoxide. Use of a tube comprised of a polyether block amide material, the polyether segments of which comprise polyethyleneoxide, for sampling of respiratory gases; and a method for sampling of respiratory gases, the method comprising conducting respiratory gases through such a tube. A gas analysis system for analysing respiratory gases, comprising a gas sampling line as defined above and a gas monitor connectable to the gas sampling line.09-29-2011
20120277612SYSTEMS FOR INTRAVENOUS DRUG MONITORING - A system for monitoring a concentration of an anesthetic drug using a patient's breath is provided. The system comprises a sampling subsystem for processing the patient's breath to form a breath sample, one or more sensors to measure drug concentration in the breath sample, one or more sensors to measure a concentration of gases in the breath sample; and one or more microprocessors for determining a concentration of the drug in a plasma of the patient using a transfer function and the concentration of the drug in the breath sample. A system for monitoring propofol concentration in patient's breath sample is also provided.11-01-2012
20100317986CAPNOGRAPHY DEVICE AND METHOD - There is provided a method for dynamically determining a breath related parameter, which includes averaging a breath related parameter over a first period of time, calculating a breath related value over a second period of time and adapting the duration of the first period of time according to the calculated breath related value.12-16-2010
20120283591RESPIRATORY WAVEFORM ANALYZER - A respiratory waveform analyzer, operable to analyze a respiratory waveform, which is generated based on a temporal change of a concentration of a component in respiratory gas of a subject, includes: a respiratory gas concentration generator which generates a concentration signal based on an output signal from a sensor that is placed to measure the concentration of the component; a flatness calculator which calculates a flatness indicative of flat degree of the respiratory waveform based on a temporal change of the concentration signal; and a reliability calculator which calculates a reliability of the respiratory waveform based on the flatness and the concentration signal.11-08-2012
20110313306METHOD AND APPARATUS FOR MONITORING STRESS LEVELS OR SUDDEN CHANGES OF HUMOR IN HUMANS OR OTHER INDIVIDUALS IN REAL TIME BY MEANS OF VAPOR ANALYSIS - A method is described to perform on-line detection of stress levels or changes in humor of individuals. The approach is particularly advantageous because analysis can be performed in real time or, at least, comprising a delay shorter than 30 s, and because it is non-invasive and non-degrading; and actually the individual under study do not need to be aware of being studied. More specifically, the present invention is based on the analysis of lactic acid and other volatiles concentrations in the vapors released by the individual (through the skin and the breath). The inventors have proved that said concentrations respond nearly instantaneously when the individual is subjected to a sudden stressful stimulus.12-22-2011
20130190639UTILIZING LIPOPOLYSACCHARIDE IN EXHALED BREATH CONDENSATE TO DIAGNOSE GRAM NEGATIVE PNEUMONIA - A device for collecting exhaled breath condensate from a subject. The device comprises a plunger assembly and a stopper. The stopper is connected to the plunger disk of the plunger assembly by a plurality of support pins and is configured for sealing engagement. The device is utilized to collect exhaled breath condensate from both spontaneously breathing and mechanically ventilated subjects and the devices utilized to determine whether lipopolysaccharide is present in the collected exhaled breath condensate.07-25-2013
20130197384Medical Ventilator Capable of Early Detecting and Recognizing Types of Pneumonia, Gas Recognition Chip, and Method for Recognizing Gas Thereof - A medical ventilator capable of early detecting and recognizing types of pneumonia, a gas recognition chip, and a method for recognizing gas thereof are disclosed. The gas recognition chip of the medical ventilator comprises a sensor array, a sensor interface circuit, a stochastic neural network chip, a memory and a microcontroller. The sensor array receives a plurality of multiple types of gases to produce odor signals corresponding to each type of gas. The sensor interface circuit analyzes the odor signals to produce gas pattern signals corresponding to each type of gas. The stochastic neural network chip amplifies the differences between the gas pattern signals and performs dimensional reduction on the gas pattern signals to aid the analysis. The memory stores training data. The microcontroller performs a mixed gas recognizing algorithm to early detect and recognize the type of the pneumonia according to the gas training data.08-01-2013

Patent applications in class Qualitative or quantitative analysis of breath component