Spirometer

Spirometer

Spirometer

A spirometer 1 for measuring the throughput air flow comprising: one or more deflectors 2, 3; a rotor 4 which rotates responsive to the airflow to the air flow, wherein the rotor provides at least one electrical element forming part of an electrical network which provides an electrical signal useable to detect the rotation rate of the rotor. The electrical element may comprise at least one conductor which is configured to operate as a switch. The conductor may be provided as a coating of conductive material which may comprise a metal. The conductive material may be applied using a vapour deposition process. The electrical elements provided by the rotor may comprise one or more capacitance plates 17 proximate the edges of a vane portion 5 such that the angle of the vane portion during rotation alters the capacitance in the electrical network.

Inhaler device

An inhaler device 200 comprising: a housing 210 with chamber 221 for receiving a medicament source 240; an air flow passage 231 through the housing 210 between an inlet 232 and an outlet 233; a sensor 235 to sense air flow rate along the passage; an orientation sensor 270 for determining an orientation and movement of the inhaler device 200; a processor 260 for processing data received from the sensors 235 and 270; and a storage device 262 for storing the data. Orientation sensor 270 may comprise at least one accelerometer and at least one gyroscope. Inhaler 200 may comprise wireless communications to connect it to a wireless network. Inhaler 200 may have a connector 263 for downloading the data to a computer. In dependence upon passage airflow, inhaler 200 may comprise a transducer for generating an audible signal and/or light emitting device for generation of a visual signal. Sensor 235 may comprise two pressure sensors disposed along the passage. Sensor 235 may comprise a rotor 236.

Casing and spirometer for metered dose inhaler

Breath flow indicator and method of use

SPIROMETER.

PORTABLE ATEMUEBERWACHUNGSGERAET TO THE TELEMETRY OF MEASURED VALUES OF A DATA PROCESSING CENTER.

DEVICE TO THE WITHDRAWAL OF GAS FROM THE BREATHING AIR AND/OR SUPPLY FROM GAS TO THE BREATHING AIR

A PERSONAL SPIROMETER

MULTI-SPIROMETER AND METHOD FOR MEASURING VENTILATORY FUNCTION BY SPIROMETRY

SPIROMETER WITH PRESSURE CORRECTION MEANS

INHALATION DEVICE WITH INTEGRATED ELECTRONICS MODULE

A device (400) for delivering medication to a user includes a circular or elliptical body (410) that includes a mouthpiece (420), a flexible strip (401) of medication, a lever (424), and a mouthpiece cover (491), where the mouthpiece cover is rotatable about the body. An electronics module (120) includes a communication circuit (134), a power supply (126), a sensor system (128), and a switch. The lever is configured to actuate the switch when the lever is moved from a closed position to an open position. The lever is further configured to advance a dose of medication on the flexible strip when moved from the closed position to the open position. The switch switches the electronics module from an off state to an active state when the lever is actuated for a first time by a user. The electronics module is configured to not return to the off state thereafter.

INTERNET-BASED DISEASE MONITORING SYSTEM (IDMS)

A medical device is provided to monitor the patient's respiratory condition. The device includes a flow chamber housing, a vane mounted to an interior surface of the flow chamber for pivoting bidirectional movement about an axis in a central portion of the flow chamber housing, and a sensor transmission module housing detachably coupled to the flow chamber housing. A system is also provided having a sensor transmission module housing configured for detachably coupling to the medical device.

Spirometer.

Spirometer.

Spirometer for determination of the respiratory time volume

Spirometers are apparatus for measurement of the respiratory time volume of the lungs. In the known apparatus the fact that the measured results are falsified by switching-related sources of error is disadvantageous. The invention considerably improves the measurement accuracy by direct conversion of the flow rate into a pulse sequence immediate counting of which immediately results in the required value after multiplication by a constant factor. It is especially advantageous to use a stepping motor (2) on the shaft of which an impeller wheel (3) lying in the respiratory flow is mounted. At the same time, a multiplicity of exactly defined pulses is obtained for each revolution of the shaft. The result of counting and multiplication is displayed digitally (8). ...

SPIROMETER.

APPAREIL SERVANT A VERIFIER LA FONCTION PULMONAIRE

L'INVENTION CONCERNE UN APPAREIL PERMETTANT DE SUIVRE INDIVIDUELLEMENT SES PROPRES APTITUDES RESPIRATOIRES. IL EST CONSTITUE D'UN COFFRET 1 COMPRENANT UNE CAGE CYLINDRIQUE 2 RENFERMANT UNE AUBE 3 EVOLUANT AUTOUR D'UN AXE FIXE 4. UN DISQUE EVIDE 8, SOLIDAIRE DE L'AUBE 3, PASSANT DEVANT UNE CELLULE 5 TRANSMET DES SIGNAUX A UNE UNITE DE TRAITEMENT 6, RELIEE A UN DISPOSITIF D'AFFICHAGE, SELON LES REACTIONS DE L'AUBE 3 DUES AU SOUFFLE DE L'UTILISATEUR INJECTE PAR UN TUBE 7. L'APPAREIL SELON L'INVENTION EST PARTICULIEREMENT RECOMMANDE POUR PRENDRE CONSCIENCE DE L'IMPORTANCE DE LA RESPIRATION SUR L'ORGANISME.

Apparatus used to check pulmonary function

Symmetrical apparatus inspiro-expiro-meter

APPARATUS AND SYSTEM FOR PREDICTIVE HEALTH MONITORING

An apparatus and system are provided for monitoring an individual, a group or a community of individuals for respiratory infections. Predictive health data, such as waking peak expiratory flow rate ("WPF") and basal metabolic temperature ("BMT") are measured and charted to provide an indication of early stage respiratory infection. Data may be collected for target populations and reported to health agencies for use in combating the spread of infection. An apparatus is provided which can simultaneously measure WPF and " and other health-condition-related values and automatically transmit readings to a data collection and analysis program on a remote computer.

Spirometer

The spirometer comprises a housing having walls defining a turbine chamber, an antechamber having a blow-in opening and having an annular portion around it and a plurality of passages extending from the annular portion tangentially into the turbine chamber. A shaft extends through the turbine chamber and an air wing rotor is secured to the shaft and is located in the turbine chamber for rotation by the blowing air directed in through the blowing opening and the antechamber and through the passages into the turbine chamber. The housing has a portion with a dial having indications thereon and a pointer and a drag pointer rotatably mounted in the housing over the dial and is movable over the dial to indicate the blowing rate. A reduction gearing is connected between the shaft and the pointer and the drag pointer to rotate the pointer and the drag pointer upon rotation of the shaft. A manually operable, disconnectable coupling is connected between the shaft and the pointer for disengaging the ...

A training device and a ventilatory capacity meter

Flowmeter for gases

Химический газоанализатор с устройством для перемещения и фиксации в пространстве напорного сосуда измерительной бюретки

Полезная модель относится к медицине и направлена на улучшение работы химических газоанализаторов, определяющих объемные проценты газов, содержащиеся в воздухе и других газовых смесях. Химический газоанализатор включает напорный сосуд измерительной бюретки, который с одной стороны соединен гибкой трубкой с измерительной бюреткой, которая через трехходовые краны соединена с сосудом для поглощения газов и через гибкую трубку с напорным сосудом. С другой стороны напорный сосуд измерительной бюретки для перемещения и фиксации в пространстве соединен через шнур и два блоковых механизма с инерционной катушкой с центральной втулкой и тормозом-трещеткой. Обеспечивается удобство и точность перемещения и фиксации напорного сосуда измерительной бюретки в пространстве, что повышает точность проведения анализов химическим газоанализатором. 1 ил.

Спироанемометр

Tubular stator fluid flow rate measuring device - constrains flow in one circumferential direction only

The appts. is for measuring rate of flow of a fluid which is circulated around a tubular stator (20) and passed through to the interior of the stator via formed oblique slots (21). The fluid that emerges fromt he inner ends of the slots forms a spirally swirling flow which drives the rotor. Devices are provided by which all or most of the flow to be measured in constrained to flow around the tubular stator in one circumferential direction only. Pref. the oblique slots w.r.t. to the circumferential direction is such that the angle by which air or gas enters each slots deviates from the flow path around the tubular stator is an acute angle. The stator casing forms a circumferential gallery around the stator.

Spirometer

APPARATUS FOR DISPENSING A METERED AMOUNT OF MEDICATION

A pocket-sized apparatus for dispensing a metered amount of aerosolised medication comprises a casing (27) defining a cavity, a discharge opening through which the user receives the medication, a valve (59) for the discharge opening which opens under the force provided by inhalation, an air opening (31) through which air enters the cavity and a medication opening. The casing also defines an open pocket for receiving a pressurised canister and there is a passageway to deliver medication from the canister via the medication opening to the cavity. The apparatus also includes means to indicate to the user when to activate the medication at a predetermined inspiratory flow. The apparatus preferably includes an electronic pressure transducer (22) to measure the back pressure of the breath moving through the casing and a cap (58) comprising openings (60) to limit air flow into the casing.

SPIROMETER

... 1457290 Spirometers ALLEN & HANBURYS Ltd 14 Dec 1973 [4 Jan 1973] 57982/ 7,3 Heading A5K [Also in Division Fl] A spirometer comprises a body 1, an impaller 7 rotatably mounted on a shaft 8 in the body, an inlet through which. air can be blown tangentially on to the impeller, a reduction gear . assembly arranged to be driven by the shaft 8 and an indicator driven by the reduction gear assembly to indicate the number of revolutions of the impeller. The cylindrical body I having axially separated chambers 2, 3 is closed at both ends by covens 5, 6 which, are provided along their peripheries with a series of spaced apertures 29, the cover 6 also having a graduated scale (28) on its outer face. An indicator disc 26 embossed with a radial line (27) on its outer base is splined to a shaft 25 of the final gear 19. A tubular portion (10) extending tangentially from the chamber 2 housing the impeller may be provided with a non-return inlet valve (12).

Breath flow indicator and method of use

SPIROMETER

... 1514904 Spirometers E GRIESHABER 31 March 1977 [6 April 1976] 13649/77 Heading A5K [Also in Division Fl] A spirometer comprises an air inlet chamber 33 that communicates via aperture 55, annular space 53 and tangential openings 52 with the interior of a housing 4 that contains a vaned rotor 5 that rotates a shaft 59 connected to a first indicator pointer 89 via reduction gearing 7, Fig. 4, and a shaft 88. The reduction gearing includes a clutch mechanism 76-81 which when deactivated by push button 82 allows a return spring 91- 93 to zero the first pointer 89. A second pointer which has a tongue 97' in the path of the first indicator 89 remains as an indication of the maximum reading but can be re-zeroed by operation of a knob 97 that overcomes the spring biased friction brake 99-103 of the second pointer shaft 95.

APPARATUS FOR MONITORING RESPIRATORY PERFORMANCE

FLOW METER FOR GASES.

SPIROMETER

INHALATION DEVICE WITH BUILT-IN ELECTRONIC MODULE

ASTHMA MONITORING DEVICE

A monitoring device to be used in conjunction with a patient's airway. Some embodiments of the monitoring device include at least one sensor assembly configured to detect inhaled and exhaled airflow and an optional communications subassembly configured to transmit measurements to at least one external computing device. Other embodiments include at least one sensor assembly configured to detect a measurement indicating airflow from the patient's lungs and at least one processor configured to detect whether the airflow is associated with medication administration or measurement of breathing characteristics. Some embodiments include a circuit that allows patient information to be analyzed by an external computing device and/or the monitoring device to determine whether the patient's breathing has declined indicating a medical problem. Optionally, the monitoring device may include a display for displaying whether the airflow measurement indicates a good outcome, a potential concern, or a serious ...

MEDICAL CONDITION MANAGEMENT METHOD AND SYSTEM

A method and system for managing a chronic medical condition, such as chronic pulmonary obstructive disorder, is disclosed. The method includes generating a baseline score for a patient; recording an exacerbation severity for a plurality of symptoms; weighting the recorded exacerbation severities; determining an exacerbation score relative to the baseline score based on at least one of the recorded or weighted exacerbation severities; assigning the exacerbation score to a category; publishing the exacerbation score and assigned category for review by a physician or medical professional; and transmitting a treatment plan to the patient, the treatment plan being prescribed by a physician and based at least in part on the exacerbation score and/or assigned category. The system includes a computer that allows the patient to perform the steps of the method and a triage center for evaluating the published exacerbation scores and prescribing and communicating a treatment plan for the patient.

SPIROMETER

A turbine spirometer (1) comprises a breathing tube (13) into which is subject is to breath and a vane (9) to be driven by the subject's breath. The breathing tube (13) has a first axis A-A at its opening (21) in the direction of air flow and the vane (9) rotates about a second axis B-B, (11). The first A-A and second B-B axes are inclined to one another at angle of around 100 degrees such that in use the axis of rotation B-B is substantially vertical.

DEVICE AND METHOD TO MEASURE INHALATION AND EXHALATION AIR FLOWS

A spirometer (1) is provided which has an air flow path comprising a mouthpiece (141), filter (such as an air filter (146) or biostatic filter (111, 121)), and an air pathway in which a multiblade transparent windmill rotor (101) rotates when air travels through same. Tips of the rotor (101) are used to detect the rate of rotation providing a train of pulses linearly proportional to the volume of air flowing through the cylindrical air path.

Wearable respiration measurement apparatus

A wearable respiration measurement apparatus including: an eyeglass frame having a nose flap which is formed in such a manner as to cover a user's nose; and an induced current generation device attached to the nose flap and generating an induced current corresponding to an amount of air inhaled or exhaled through the user's nose.

Medical device for diagnostic and/or therapeutic use

In a medical examination or therapy device, the aim is to ensure an exact recording of the respiratory activity of the patient, in particular a recording of the tidal volume. The patient breathes through a spirometer (8), which has a measurement transformer (10, 11) for the measurement of volumes and a transmitter for generating trigger signals. In addition, a closure element (14) for the airway can be provided in the spirometer (8), which closure element is controlled in such a way that the respiratory flow is briefly interrupted upon reaching a predetermined set value, for example for measured value formation. ...

Способ прогнозирования обострений бронхиальной астмы в течение ближайшего года у пациентов с сопутствующей мультиморбидной патологией

Изобретение относится к медицине, а именно к терапии и пульмонологии, и может быть использовано для прогнозирования обострений бронхиальной астмы (БА) в течение ближайшего года у пациентов с сопутствующей мультиморбидной патологией. Осуществляют определение диагностических показателей, в качестве которых определяют: уровень двигательной активности по опроснику ODA23+, объем форсированного выдоха за 1-ю секунду маневра форсированная жизненная емкость легких выдоха (FEV1), уровень перекисей сыворотки крови, уровень активности пациентов по шкале Лекена, уровень лептина венозной крови, индекс массы тела (BMI), уровень интерлейкина-6 (ИЛ-6), кумулятивный индекс заболеваний CIRS. На основании полученных данных вычисляют индекс вероятности частоты обострения БА в течение ближайшего года у пациентов с сопутствующей мультиморбидной патологией (ExacBA) по формуле: ExacBA = 7,57567 - 0,105518×FEV1 - 0,144268×CIRS - 0,000172187×ODA23+×FEV1 - 0,000901236×ODA23+×Leken + 0,00038601×ODA23+×BMI - 0,000426185 ...

SPIROMETER

SPIROMETER

MORE HANDSPIROMETER WITH SEPARABLE RIVER HEAD

VORRICHTUNG UND VERFAHREN ZUR BESTIMMUNG EINER FERTILEN PHASE EINER FRAU DURCH ERMITTLUNG EINES CO2-PARTIALDRUCKES IN EINEM ATEMGAS DER FRAU

The invention relates to a device (1) for determining a fertile phase of a woman by ascertaining a CO2 partial pressure in a respiratory gas of the woman in several consecutive breaths, comprising an inlet for receiving the respiratory gas, and an outlet, a sample chamber (2), into which the respiratory gas can be conducted, a measuring module (3) with a measuring element (4) with which a CO2 concentration in the respiratory gas in the sample chamber (2) can be measured, optionally a pressure sensor (5) for measuring an air pressure, a processor (7) for processing measured data obtained by means of the measuring module (3) and the pressure sensor (5), and at least one output unit (9) for outputting a result of the measured data. So that the method can be carried out by a woman herself quickly and nevertheless with high precision, it is provided according to the invention that the device (1) is embodied as a hand-held device and an algorithm is stored in the processor (7), with which with ...

Spirometer

The chronic nature of asthma necessitates regular self-monitoring of respiratory function in susceptible individuals, however the available devices for performing the necessary measurements are either inaccurate or expensive and bulky. The present invention provides a small, cheap spirometer for efficient, accurate and convenient measurement of breathing characteristics.

Inhalation device with integrated electronics module

A device (400) for delivering medication to a user includes a circular or elliptical body (410) that includes a mouthpiece (420), a flexible strip (401) of medication, a lever (424), and a mouthpiece cover (491), where the mouthpiece cover is rotatable about the body. An electronics module (120) includes a communication circuit (134), a power supply (126), a sensor system (128), and a switch. The lever is configured to actuate the switch when the lever is moved from a closed position to an open position. The lever is further configured to advance a dose of medication on the flexible strip when moved from the closed position to the open position. The switch switches the electronics module from an off state to an active state when the lever is actuated for a first time by a user. The electronics module is configured to not return to the off state thereafter.

SPIROMETER

RESPIRATORY EXERCISING DEVICE AND METHOD

The invention relates to a respiratory exercising device comprising means for detecting a person's breathing, characterised in that said means for detecting a person's breathing comprise a turbine whistle (3) which generates a sound of a variable frequency depending on the flow of air that passes therethrough, and a microphone (4) that captures said sound of a variable frequency generated by the turbine whistle (3). The respiratory exercising method comprises the steps of producing data relating to a person's breathing with the aforementioned device, of sending said data relating to the breathing to control means, and of applying an algorithm to said data in order to calculate the values of the flows generated by the breathing. The invention allows respiratory exercising to be performed in a simple manner, including for children.

CASING AND SPIROMETER FOR METERED DOSE INHALER

An apparatus for dispensing a metered amount of aerosolized medication and/or for measuring breathing function includes a casing that defines a cavity, a first or discharge opening from which a subject inhales from the cavity or exhales into the cavity, a second or air opening through which air enters the cavity, and a third opening in fluid communication with the cavity between the first and second openings. The casing also defines an open pocket for receiving a pressurized canister and a fourth or medication opening through which the contents of the canister discharge into the cavity of the casing. A pressure transducer in fluid communication with the third opening senses the pressure of breath moving through the cavity. Alternatively, a fan and photocell assembly may replace the pressure transducer and sense the flow of gas through the cavity.

Transducer device for the instantaneous flow rate of bidirectional gaseous fluids which are usable for physiological and similar applications

IMPROVEMENT HAS A SPIROMETER

GAS FLOW SENSOR WHICH SENSES A FLOW RATE OF GENERAL GAS AND FLOW RATE OF BREATHABLE AIRFLOW

PURPOSE: A gas flow sensor, which senses a flow rate of general gas and flow rate of breathable airflow, is provided to simplify the structure of a gas flow sensor including a pressure sensor. CONSTITUTION: A gas flow sensor, which senses a flow rate of general gas and flow rate of breathable airflow, comprises a chamber(70), first and second pressure taps(71,72) and a pressure sensor(73). The first and second pressure taps are included in the left and right sides of the chamber. The pressure sensor is connected to the first and second pressure taps in order to measure the pressure difference between right and left sides of the chamber. The inside of the chamber is hollow form. The inside diameter of the center part of the chamber is larger than that of the left and right side of the chamber. COPYRIGHT KIPO 2012 ...

PERSONAL SPIROMETER

A spirometer for correlating test results with other user date to indicate a relationship, said spirometer comprising: (a) a processor; (b) memory operatively connected to said processor and configured with instruction to instruct the processor to perform the following steps: (i) recording spirometer results of a user; (ii) correlating said results with user data, said user data comprising at least one of a medication log, a medical diary, a baseline performance for said user provided by a healthcare provider, or other results from other testing devices; and (iii) indicating a relationship between said results and said user data.

System for monitoring and reporting medical measurements

A system for monitoring and reporting medical information includes a stand-alone monitor for storing data records comprising measured values and time stamps and for transmitting the records to a remote reporting unit over a communication system. The remote reporting unit includes a relational data base that is updated when records are down-loaded from the monitor; a report generator for generating chronological graphs of the measured values for a particular patient; and a report transmitting unit for transmitting reports to a requesting health care provider.

Spirometer

The chronic nature of asthma necessitates regular self-monitoring of respiratory function in susceptible individuals, however the available devices for performing the necessary measurements are either inaccurate or expensive and bulky. The present invention provides a small, cheap spirometer for efficient, accurate and convenient measurement of breathing characteristics.

BREATHING BIOFEEDBACK DEVICE

INHALATION DEVICE WITH INTEGRATED ELECTRONICS MODULE

Übungsvorrichtung und Atmungskapazitätmesser

Spirometer

FLUID FLOW RATE METER

... 1314627 Recording-apparatus FIBRE-OPTICS INDUSTRIES Inc 28 July 1971 [11 Sept 1970] 35456/71 Heading G1J [Also in Divisions F1 and G4] A spirometer has a respiratory assembly with a mouthpiece lodged in a holder 16 and comprising sleeves 62, 64 defining a passage 70 through which the patient breathes, the rate and direction of air-flow being detected by a rotatable vaned-member 20. An opaque sleeve-portion 86 of the member is carried by a fixed transparent hub 78. The speed and direction of rotation of the member are detected by photo-cells 58, 60 situated in a fixed ring 48 and energized by light passing through holes 104, 106 in the portion 86 and lenses 57, 61, 96, 98, 100, 102 from corresponding lamps 54, 56. The photo-cell output is received by an electronic circuit 22 from which signals are transmitted to a stepping motor 26 in accordance with the speed and direction of rotation of the member 20. Through gears 28, 30 the motor moves an arm 32 containing an optical fibre 34 into register ...

SPIROMETER

EQUIPMENT AND PROCEDURE FOR THE DETERMINATION OF THE STATE OF HEALTH AND THE PHYSIOLOGICAL EFFICIENCY.

FLOW METER FOR THE ANNOUNCEMENT OF MAXIMUM VALUES

VORRICHTUNG UND VERFAHREN ZUR BESTIMMUNG EINER FERTILEN PHASE EINER FRAU DURCH ERMITTLUNG EINES CO2-PARTIALDRUCKES IN EINEM ATEMGAS DER FRAU

The invention relates to a device (1) for determining a fertile phase of a woman by ascertaining a CO2 partial pressure in a respiratory gas of the woman in a plurality of consecutive breaths, comprising an inlet for receiving the respiratory gas and an outlet, a sample chamber (2) into which the respiratory gas can be conducted, a measuring module (3) having a measuring element (4) by which a CO2 concentration in the respiratory gas in the sample chamber (2) can be measured, optionally a pressure sensor (5) for measuring an air pressure, a processor (7) for processing measured data obtained by means of the measuring module (3) and the pressure sensor (5), and at least one output unit (9) for outputting a result of the measured data. To ensure that the method can be carried out by a woman herself in a short period of time, yet at a high level of accuracy, according to the invention the device (1) is designed as a hand-held unit and an algorithm is stored in the processor (7), by means of ...

PERSONAL SPIROMETER

A self-contained portable spirometer includes a housing and an air tube with an orifice. Within the housing there is a transducer and microprocessor-based circuitry for generating standard exhaled air measurements such as FEV1 and PFER. These measurements are displayed on a screen disposed on the housing.

Respiratory exercising device and method

DEVICE OF DETERMINATION OF RESPIRATORY PHASES OF the SLEEP Of a USER

GAS FLOW INDICATOR

A gas flow rate indicator comprising a container (10) having an inlet (12) and an outlet (14). The container has an internal passage through which gas under pressure may flow from inlet (12) to outlet (14). The container also has indicator means (16) within the passage. That indicator means (16) is responsive to the flow of gas through the passage. The container has a viewing port (15) through which the response of the indicator means (16) to the flow of gas can be observed.

DISPOSABLE SPIROMETER WITH PLASTIC INJECTION MOULDED TURBINE

BREATHING FLOWRATE AND FLOW VELOCITY MEASURING DEVICE

PROBLEM TO BE SOLVED: To increase a freedom of testee and reduce the limit of using environment by providing a transmitter in one with a casing. SOLUTION: A casing 1 is constituted of a holder 2 and a sensor attaching part 3, a pair of deflection members 4 are attached in the middle of a flow path 2D in a holder 2, and a rotor 6 is rotatably pinched between the deflection members 4. In a notch groove of the holder 2, a sensor attaching part 3 provided with a first and a second rotation sensors facing the rotor 6 is attached. To the sensor attaching part 3, a transmission circuit 12 connected to each pickup is provided. The transmission circuit 12 is constituted of a rotation speed signal output circuit, a rotation direction signal output circuit, a modulation circuit and the like, and pulse signals according to the rotation direction and rotation speed of the rotor 6 are transmitted. COPYRIGHT: (C)2000,JPO ...

Casing and spirometer for metered dose inhaler

NO DETAILS

Improvements in or relating to anemometers or flow-meters for measuring the speed orflow of air or gas

... 765,206. Rotary meters. NATIONAL RESEARCH DEVELOPMENT CORPORATION. Aug. 26, 1955 [Aug. 10, 1954], No. 23227/54. Class 110 (2). The meter has a rotor with axial vanes 4, on a spindle 5, and one or more entrances 13, for air or other gas, designed to convert the incoming gas into a jet or jets following a spiral path within the casing 1. The casing may be made of plastic material closed at one end 9, and the usual indicating mechanism 7 placed between the wall 9 and an outer cover protecting the indicator needles 8. The outer end 3 may be attached to a respirator base or to any other point to which the metered air or gas flow is to be directed. The vanes 4 may be of plastic material mounted on a light spindle 5 which may be supported in jewelled bearings 6. The rotor and indicating mechanism are carried by a framework constructed as a unit, which is removable as a whole from the stator. Different sized units may be used in the stator. The meter may be used in an anaesthetic apparatus. Fig ...

PERFECTIONNEMENT A UN SPIROMETRE

L'invention concerne un spiromètre. Selon l'invention, il comprend un transducteur à turbine 6 ayant plusieurs aubes, un moyen pour faire passer de l'air exhalé ou inhalé au-delà des aubes pour les faire tourner, un moyen 35 pour produire des impulsions électriques proportionnellement à la vitesse de rotation des aubes, un microprocesseur connecté au transducteur pour stocker et traiter les impulsions et un moyen pour afficher l'information calculée dans le microprocesseur. L'invention s'applique notamment à l'étude des fonctions pulmonaires.

COMPTEUR VOLUMETRIQUE POUR SPIROMETRE

DISPOSITIF COMPTEUR DE DEBIT DE FLUIDES GAZEUX DESTINE A MESURER LA CAPACITE ET L'EFFICACITE DU CYCLE RESPIRATOIRE. IL COMPREND UN CARTER EN DEUX PARTIES 5 ET 12, DONT L'UN 5 PORTE EN SON CENTRE UN AXE 9 AUTOUR DUQUEL TOURNE LIBREMENT UNE TURBINE OU ROTOR 1, SOLIDAIRE D'UN COUSSINET 4 ET MUNI D'AILETTES. LE FLANC DU ROTOR 1 POSSEDE UN OU PLUSIEURS ORIFICES 3 QUI, EN PASSANT DEVANT UN RAYON LUMINEUX ISSU D'UNE SOURCE DE LUMIERE 10 ET D'UNE FENETRE 16, RESERVEE DANS LE CARTER 5 VA MODULER UNE PHOTOCELLULE 11. LE VOLUME D'AIR CONTENU ENTRE LES PALETTES DU ROTOR 1 ETANT CONNU, ON TOTALISERA NUMERIQUEMENT A L'AIDE DE CIRCUITS ELECTRONIQUES CONNUS. L'ENTREE ET LA SORTIE D'AIR QUI METTENT EN MOUVEMENT DE ROTATION LA TURBINE-ROTOR 1 SONT REPRESENTEES EN 15. DES SOUPAPES REGLABLES 6 ET 7 PERMETTENT L'ETALONNAGE DE L'ENSEMBLE.

Spirometer

Antibacterial filter and turbine flowmeter for tests on respiratory functionality

A flowmeter and filter assembly for spirometry have a flowmeter with a turbine rotor and sensor means for detecting the speed of rotation of the rotor, and a filter upstream of the flowmeter. An air-conveying device modifies the direction of the flow of air at an outlet from the filter to set the rotor in rotation within the flowmeter. The air-conveying device is integrated in the filter instead of in the flowmeter.

Portable breathing monitor for telemetric measurement by a central processing station

INHALER SYSTEM

MEASURING INSTRUMENT AND METHOD INDICATING STATE OF MEASURED PHYSIOLOGICAL CHARACTERISTIC

PROBLEM TO BE SOLVED: To provide a measuring instrument and a method having an improved human interface and indicating a state of measured physiological characteristics. SOLUTION: A user interface is provided with a display area corresponding to a zone of respiration results. When the respiratory function is measured, the zone of the results corresponding to the present measured value is determined and a display zone corresponding thereto is made a display (operating) state. COPYRIGHT: (C)2005,JPO&NCIPI ...

Способ определения энергетической потребности пациента в критическом состоянии на спонтанном дыхании в режиме реального времени

Изобретение относится к медицинской технике, а именно к способу определения энергетической потребности пациента в критическом состоянии на спонтанном дыхании в режиме реального времени. Способ включает изучение энергетической потребности пациента в критическом состоянии на спонтанном дыхании с помощью газоанализатора ГКМП-02, изолированного от аппарата Фаза-5НР, анализатора Vamos®, изолированного от наркозного аппарата Fabius®, в котором энергетическую потребность определяют на спонтанном дыхании пациента в критическом состоянии в режиме реального времени, ккал/мин. Пациент в критическом состоянии самостоятельно дышит через лицевую маску с минимальной длиной магистрали вдоха-выдоха. При вдохе воздушная смесь из атмосферы поступает к вентилометру, изолированному от аппарата Фаза-5НР, встроенному в магистраль вдоха, который фиксирует дыхательный объем на вдохе - Vti, мл, а затем из магистрали через тройник к датчику кислорода газоанализатора ГКМП-02, изолированного от аппарата Фаза-5НР, который ...

Измерительное устройство для оценки функции легких

Полезная модель относится к мультипараметрическому портативному измерительному устройству для непрерывного анализа потока выдыхаемого воздуха и методу непрерывного анализа потока выдыхаемого воздуха. Предоставлено мультипараметрическое устройство для функциональной диагностики легких, содержащее: оптическую ячейку, ИК-излучатель и ИК-сенсор, установленные в оптической ячейке, в свою очередь оптическая ячейка имеет оптическую длину пути от ИК-излучателя к ИК-сенсору, достаточную для определения концентрации углекислого газа в воздухе, при этом оптическая ячейка сконфигурирована так, чтобы через нее мог проходить поток газовой среды; и набор датчиков для оценки механических характеристик проходящего воздушного потока, таких как датчик давления, датчик влажности, датчик температуры, расходомер, микрофон.

DURCHFLUSSMENGENMESSER

Breathing biofeedback device optionally comprising inhalable substance dispenser and breathing feedback methods

A biofeedback device for providing feedback for helping control breathing comprises: a housing 38 configured to be hand-held by the user; an exhalation inlet 14 for receiving exhaled breath; an exhalation determiner 22 configured to determine when exhaled breath is received by said exhalation inlet; and a reporter, e.g. display 28, configured to provide a feedback signal to the user related to an exhalation duration. The apparatus may comprise an inhalable substance dispenser 46, comprising an inhalable substance reservoir 48 and outlet 50. The feedback may comprise a comparison to a preferred exhalation duration. The apparatus may provide adaptive feedback where the preferred exhalation duration is adjusted based on the actual exhalation duration using a closed loop method. The exhalation determiner may determine the presence of breath flow using a propeller, pressure sensor or temperature sensor. The feedback may be visual feedback , audible feedback or tactile feedback. The feedback ...

Improvements in or relating to spirometers

... 459,765. Spirometers. DORNSEIF, H., 30, Ulfestrasse, Radevormwald, Germany. May 6, 1936, No. 12832. [Class 81 (ii)] A spirometer comprising a bladed wheel, particularly for axial air flow, and a counting mechanism operatively connected with the wheel, is characterized by a helical guide conduit for the air flow opening into the bladed wheel obliquely in the direction of rotation. As shown, the apparatus consists of a two-part casing 4, 5 in which is mounted between bearings 21, 22 a bladed wheel 1. Bearing 22 is vertically adjustable. The wheel is connected to counting mechanism 3, the number of revolutions of the wheel being indicated by a pointer 12 moving over a dial 11. The helical guide conduit consists of a pit 6 having a helically ascending bottom 31. Air is blown into the guide conduit through nozzle 7, and due to the rotation imparted to it, moisture and germs are thrown onto the walls of the pit; the condensed moisture flows through an opening 32 at the bottom, and is absorbed ...

A gas flow rate indicator

A gas flow rate indicator comprises a container 10 having an inlet 12 and an outlet 14. The container has an internal passage through which gas under pressure may flow from inlet 12 to outlet 14. The container also has indicator means, in this case a rotor 16, within the passage and which is responsive to the flow of gas through the passage. The container has a viewing port 15 through which the response of the indicator means 16 to the flow of gas can be observed.

SPIROMETER

A spirometer comprises a transmitter unit (4) and a receiver unit (6) which are remotely positionable from each other and not connected by wires; the transmitter unit (4) comprising a transducer (12, 14, 16, 18) for converting exhaled air from a patient into pulse signals (20) and a transmitter (26, 28) for transmitting the pulse signals; and the receiver unit (6) comprising a transducer (30) for converting the transmitted pulse signals into electrical signals, and a display device (34) for indicating the volume and/or the flow of the exhaled air in dependence upon the generated electrical signals. A vane (12) rotated by exhaled breath interrupts an infrared beam (10) producing a pulse train (20), the length of the pulses being shortened (24) before transmission from LED 28 to photodiode 30. ...

Breath flow indicator and method of use

A mechanical apparatus 302 comprising a first and second port for receiving and venting a flow of gas, a chamber connecting the first and second ports 202, 203 and a rotor located within the chamber 303 having a plurality of arms in which at least one arm of the rotor has a permanent magnet and a connecting portion 305 for connecting a sensor to the exterior of the chamber to detect the magnetic field of the magnet. An electronic apparatus 301 comprising a first sensor for detecting a magnetic field, an output for outputting signals from the first sensor and a connecting portion 304 for connecting the electronic apparatus to the mechanical apparatus. A breath flow detector unit for outputting an electronic signal indicative of the flow of breath of a user comprising the above mechanical and electronic apparatus. A breath monitor system comprising the breath flow detector unit and a computing device for receiving signals from the electronic apparatus. A kit of parts for an anaesthetic circuit ...

Spirometer

Casing and spirometer for metered dose inhaler

SPIROMETER

Портативное спирометрическое устройство турбинного типа

Полезная модель относится к медицинской технике, в частности к технике спирометрии. Портативное спирометрическое устройство турбинного типа содержит первый микроконтроллер, связанный с блоком памяти, аккумуляторную батарею, находящуюся во встроенном в корпус устройства отсеке питания, блок контроля и управления питанием, к которому подключена аккумуляторная батарея, панель управления с кнопками, встроенными в корпус устройства, выход которой подключен ко входу управления первого микроконтроллера, блок отображения информации со встроенным в корпус устройства экраном жидкокристаллическим и блок звуковой сигнализации, входы которых подключены, соответственно, к видео- и аудиовыходам первого микроконтроллера, а также турбинный преобразователь потока, включающий лепестковый ротор измерительной турбины, первый и второй светодиодные источники инфракрасного (ИК) излучения, оптически связанные с расположенными напротив них, соответственно, первым и вторым фотоприемниками, установленными таким образом, чтобы лепестки вращающегося ротора измерительной турбины прерывали распространение излучения в оптических парах - "первый светодиодный источник ИК излучения - первый фотоприемник", "второй светодиодный источник ИК излучения - второй фотоприемник", при этом второй микроконтроллер выполнен с портом для связи с персональным компьютером и связан с радиомодулями гигагерцового (ГГц) и мегагерцового (МГц) диапазонов, а первый микроконтроллер выполнен с дополнительным коммуникационным портом, через который он связан со вторым микроконтроллером, подключенным к блоку контроля и управления питанием. Использование полезной модели позволяет распространить арсенал технических средств спирометрии на область телемедицины. 2 з.п. ф-лы, 3 ил. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 195 384 U1 (51) МПК A61B 5/091 (2006.01) A61B 5/087 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ (52) СПК A61B 5/091 (2019.08) (21)(22) Заявка: ...

Анализатор паров этанола в выдыхаемом воздухе с ускоренной очисткой

Полезная модель относится к области медицинской техники и может быть использована для определения наличия и концентрации алкоголя в выдыхаемом воздухе. Анализатор содержит корпус и расположенные в нем узел формирования воздушных потоков с устройством вентиляции корпуса, измерительный модуль, включающий микроконтроллер, датчик температуры, датчик этанола и заборную систему, выполненную в виде микронасоса с датчиком давления с возможностью подачи к датчику этанола пробы выдыхаемого воздуха заданного объема, блок управления и связанный с ним блок отображения информации, при этом упомянутое устройство вентиляции подключено к блоку управления, а микронасос, датчик давления, датчик температуры и датчик этанола электрически соединены с микроконтроллером, который связан с блоком управления. При этом анализатор снабжен вторым устройством вентиляции, подключенным к блоку управления, узел формирования воздушных потоков выполнен в виде конфигуратора, с одной из сторон которого установлено упомянутое устройство вентиляции корпуса, а с другой стороны расположено входное отверстие упомянутого корпуса с воздушным зазором относительно входного патрубка заборной системы, причем на одной из примыкающих сторон конфигуратора установлен упомянутый измерительный модуль, а с его другой примыкающей стороны установлено второе устройство вентиляции с возможностью продувки упомянутого зазора и обеспечения удаления оставшегося выдохнутого воздуха после предыдущего измерения из зазора и из входного патрубка заборной системы. 2 з.п. ф-лы, 3 ил. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 196 055 U1 (51) МПК G01N 33/497 (2006.01) A61B 5/097 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ (52) СПК G01N 33/497 (2020.01); A61B 5/097 (2020.01) (21)(22) Заявка: 2019144427, 27.12.2019 (24) Дата начала отсчета срока действия патента: Дата регистрации: (73) Патентообладатель(и): Общество с ограниченной ответственностью "АЛКОТЕКТОР" (RU) 17.02.2020 (45) ...

Devices and methods for respiratory variation monitoring by measurement of respiratory volumes, motion and variability

This invention is directed to devices and methods for assessing a patient. The devices have at least one impedance measuring element functionally connected to a programmable element, programmed to analyze an impedance measurement, and to provide an assessment of at least one respiratory parameter of the patient. Preferably the device includes electronics which aid in calibration, signal acquisition, conditioning, and filtering.

Method and device for the automatic evaluation and analysis of a capnogram and computer program for implementing the method as well as computer program product with such a computer program

A method implemented, e.g., as software and a device operating according to the method for the automatic evaluation and analysis of a capnogram are provided. Measured values for an expired volume—volume measured values—and measured values for a carbon dioxide concentration—concentration measured values—are recorded for the breathing gas of a test subject. An automatic approximation of at least one part of the curve of the concentration measured values over the volume measured values is performed, by using three mutually adjacent straight lines for the approximation. The area is determined using the third straight line according to Fowler for the determination of the serial dead space Vds.

Detection of Dynamic Hyperinflation in Spontaneously Breathing Mechanically Ventilated Patients

A method and device for determining dynamic hyperinflation during mechanical ventilation of a spontaneously breathing patient, wherein mechanical ventilation is removed during one breath of the patient, inspiratory and expiratory volumes of the patient are measured during the one breath, and a difference between the inspiratory and expiratory volumes measured during the one breath is calculated. Dynamic hyperinflation of the patient's lungs is indicated in relation to the calculated difference.

Devices for diagnosing sleep apnea or other conditions and related systems and methods

A system includes a sensor device having a body configured to be inserted into an airway of a patient and one or more sensors mounted in or on the body. The one or more sensors are configured to collect sensor data associated with the airway of the patient. The system also includes a signal analyzer configured to analyze the sensor data. The one or more sensors could include one or more microphones. The signal analyzer could identify volume and/or pitch characteristics of the sensor data, perform pattern recognition to identify one or more patterns using the volume and/or pitch characteristics, and use the one or more patterns to identify a type, a location, and/or a degree of airway obstruction. This could be done, for instance, to determine if the patient suffers from obstructive sleep apnea or other condition that affects his or her airway.

Apparatus and method for calculating caloric expenditure using posture

Systems and methods for estimating caloric expenditure. The systems can include a physiological sensor to measure a patient's physical activity, and a posture sensor to measure the patient's posture. An estimated caloric expenditure can be calculated based on data from the physiological sensor and the posture sensor. For example, the estimated caloric expenditure can be calculated at least in part based on the posture data. For example, the estimated caloric expenditure can be validated based on the posture data.

Detector and Method for Detection of H. Pylori

An inexpensive, portable, hand held, point-of-care, non-invasive breath-analyzer for the detection of H. Pylori in adults and children by measuring ammonia in breath using a polyaniline-carbon nanotube sensor.

Systems 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.

Interchangeable inserts

In a mask for patient ventilation, a frame portion is included for surrounding a respiratory opening of a patient. A retention strap is coupled with the frame portion for maintaining positive pressure between the frame portion and the respiratory opening of the patient. A removable insert is configured to physically attach and detach from the frame portion without requiring removal of the frame or the retention strap from the patient.

Respiratory muscle endurance training device and method for the use thereof

A respiratory muscle endurance training device (RMET) includes a chamber and a patient interface. In one implementation, one or both of a CO 2 sensor or a temperature sensor can be coupled to the chamber or patient interface to provide the user or caregiver with indicia about the CO 2 level in, or the temperature of, the chamber or patient interface, and/or the duration of use of the device. In another implementation, the RMET may have a fixed volume portion adjustable to contain a measured portion of a specific patient's inspiratory volume capacity. Methods of using the device are also provided.

Ventilation mask with integrated piloted exhalation valve

In accordance with the present invention, there is provided a mask for achieving positive pressure mechanical ventilation (inclusive of CPAP, ventilator support, critical care ventilation, emergency applications), and a method for a operating a ventilation system including such mask. The mask of the present invention includes a piloted exhalation valve that is used to achieve the target pressures/flows to the patient. The pilot for the valve may be pneumatic and driven from the gas supply tubing from the ventilator. The pilot may also be a preset pressure derived in the mask, a separate pneumatic line from the ventilator, or an electro-mechanical control. The mask of the present invention may further include a heat and moisture exchanger (HME) which is integrated therein.

System and method for detecting sleep onset in a subject based on responsiveness to breathing cues

A wake-to-sleep transition for a subject is detected based on responsiveness to breathing cues provided to the subject. A pressurized flow of breathable gas to the airway of subject having one or more gas parameters that are adjusted to provide breathing cues to the subject. Based on a detected conformance of the respiration of the subject to the breathing cues, a determination is made as to whether the subject is awake or asleep.

END-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. 1. A device for attaching medical tubing to a nasal cannula , the device comprising: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;at least one body channel extending through the body and having an outlet at the distal end of the body; anda tube connector attached to the proximal end of the body and adapted to fluidly connect the medical tubing to the at least one channel.2. The device of claim 1 , wherein the body is bifurcated at the distal end into a first prong and a second prong spaced apart from the first prong claim 1 , and wherein the first prong comprises at least one first channel extending through the first prong and fluidly connected to the body channel claim 1 , and the second prong comprises a second channel extending through the second prong and fluidly connected to the body channel.3. The device of claim 1 , wherein distal ends of the first prong and the second prong positioned in or near alternate nostrils of a patient.4. The device of claim 1 , wherein the connector comprises an elongated member and a pivot that acts to engage the elongated member with the body.5. The device of claim 1 , wherein the connector comprises a strap.6. The device of claim 1 , wherein the connector comprises an elastically biased clip claim 1 , a nasal ...

RESPIRATORY INTERFACE APPARATUS

A respiratory interface apparatus () is provided that includes a patient contacting portion () structured to engage a face of the patient, a common chamber () fluidly coupled to the patient contacting portion (), a first control chamber (), a first flow regulating mechanism () provided between the first control chamber () and the common chamber (), a second control chamber (), and a second flow regulating mechanism () provided between the second control chamber () and the common chamber (). 166. A respiratory interface apparatus ( , ′) , comprising:{'b': '21', 'a patient contacting portion () structured to engage a face of the patient;'}{'b': '30', 'a common chamber () fluidly coupled to the patient contacting portion;'}{'b': 26', '26, 'a first control chamber (, ′);'}{'b': 32', '58, 'a first flow regulating mechanism (, ) provided between the first control chamber and the common chamber;'}{'b': 28', '28, 'a second control chamber (, ′); and'}{'b': 34', '60, 'a second flow regulating mechanism (, ) provided between the second control chamber and the common chamber.'}2. The respiratory interface apparatus according to claim 1 , wherein the first flow regulating mechanism is structured to selectively fluidly couple the first control chamber to the common chamber claim 1 , and wherein the second flow regulating mechanism is structured to selectively fluidly couple the second control chamber to the common chamber.322. The respiratory interface apparatus according to claim 1 , wherein the patient contacting portion is part of a mask body () claim 1 , and wherein the common chamber claim 1 , the first control chamber and the second control chamber are coupled to the mask body and together form a patent interface assembly.41618. The respiratory interface apparatus according to claim 3 , further comprising a first conduit () fluidly coupled to the first control chamber and a second conduit () fluidly coupled to the second control chamber.544. The respiratory interface ...

NASAL MASK

A surgical mask for use in dental procedures, and oral or facial surgery, formed of a continuous sheet of flexible material comprising a nose-conforming shell incorporating adhesive material for sealing and for maintaining position on the patient during the dental or surgical procedure. The mask forms an encasement for input/output manifolds, and terminates in flexible flange at the columella-labial junction; the mask includes a manifold for receiving and directing NO/Ointo the nasal vault of the patient, and for the removal of exhalant and the scavenging of gases from the work area. 1. A nasal mask for use with oral or facial surgery or dental procedures , comprising:(a) a single sheet of flexible plastic material comprising a nose-conforming shell having an interior and an exterior;(b) said nose-conforming shell including a labial flange contacting the patient in the columella-labial area, when the mask is in place, forming a flexible seal;{'sub': 2', '2, '(c) an input manifold, for connection to a source of regulated NO/Ogas mixture, encased within the interior of said mask, said input manifold including a single prong extending into a nasal vault of a patient for delivering the gas mixture to the patient; and'}(d) an exhaust manifold, for connection to a source of vacuum, encased within the interior of said mask, having openings opposite the patient's nasal aperture for collecting exhalant, and having openings communicating with the exterior of said mask in the vicinity of the patient's columella-labial area for scavenging any gas mixture that may have escaped from within the mask.2. The nasal mask of wherein a chamber is formed between the front wall of the mask and the patient's columella to provide a volume within which exhalant and any residual NO/Omay be scavenged or removed.3. A nasal mask for use with oral or facial surgery or dental procedures claim 1 , comprising:(a) a single sheet of flexible plastic material comprising a nose-conforming shell having ...

SYSTEM AND METHOD FOR ESTIMATING UPPER AIRWAY RESISTANCE AND LUNG COMPLIANCE EMPLOYING INDUCED CENTRAL APNEAS

A method of estimating upper airway resistance or lung compliance of a patient is provided that includes inducing a central apnea in the patient, providing a known pressure stimulus comprising a flow of breathing gas having a known pressure level to the patient while the patient is experiencing the central apnea, determining a patient flow-related parameter, such as flow rate and/or flow volume, associated with the known pressure stimulus, and estimating the upper airway resistance or the lung compliance of the patient using the patient flow-related parameter using, for example and without limitation, an input-output system identification method. 1. A method of estimating upper airway resistance or lung compliance of a patient , comprising:inducing a central apnea in the patient;providing a known pressure stimulus comprising a flow of breathing gas having a known pressure level to the patient while the patient is experiencing the central apnea;determining a patient flow-related parameter associated with the known pressure stimulus; andestimating the upper airway resistance or the lung compliance of the patient using the patient flow-related parameter.2. The method according to claim 1 , wherein the patient flow-related parameter is a flow rate at the patient.3. The method according to claim 1 , wherein the patient flow-related parameter is a volume of flow at the patient.4. The method according to claim 1 , wherein the estimating employs an input-output system identification method.5. The method according to claim 4 , wherein the input-output system identification method is based on a single compartment lung model.6. The method according to claim 1 , wherein the inducing a central apnea in the patient comprises providing a central apnea inducing stimulus to the patient.7. The method according to claim 6 , wherein the inducing a central apnea further includes determining whether patient airflow has ceased claim 6 , and wherein the providing the known pressure ...

DRYING SUBSTANCES, PREPARATION AND USE THEREOF

There is provided herein a dryer polymer substance including a hetero-phase polymer composition including two or more polymers wherein at least one of the two or more polymers include sulfonic groups, wherein the substance is adapted to pervaporate a fluid. The fluid may include water, water vapor or both. There is also provided herein a process for the preparation of a dryer polymer substance adapted to pervaporate a fluid (such as water, water vapor or both) the process includes mixing two or more polymers, wherein at least one of the two or more polymers may include groups which are adapted to be sulfonated, to produce a hetero-phase polymer composition and processing the polymer blend into a desired form. 1. A breath sampling system comprising:a dryer polymer tube comprising a hetero-phase polymer composition comprising two or more polymers wherein at least one of said two or more polymers comprises sulfonated groups, wherein the tube is adapted to pervaporate water, water vapor or both; and at least one of:a connector adapted to connect said dryer polymer tube to a breath sampling tube; anda reinforcement element.2. The system according to claim 1 , wherein the connector claim 1 , the reinforcement element claim 1 , or both are molded with the dryer polymer tube.3. The system according to claim 1 , wherein the tube further comprises a compatibilizing agent.4. The system according to claim 1 , wherein said hetero-phase polymer composition has an essentially co-continuous phase structure.5. The system according to claim 1 , wherein at least one of the two or more polymers comprises a polyolefin claim 1 , a fluoro-polymer or a combination thereof.6. The system according to claim 7 , wherein said fluoro-polymer comprises poly(vinylidene fluoride) (PVDF) or any derivative thereof.7. The system according to claim 1 , wherein said polymer comprising sulfonic groups comprises sulfonated polystyrene claim 1 , sulfonated styrene copolymer or any mixture or derivative ...

System and Method for Detection of Analytes in Exhaled Breath

A device, system, and methods are disclosed for detecting the presence or determining a quantitative amount of at least one drug substance from exhaled breath of a subject in-situ. 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.

SUBJECT 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 () configured to deliver a breathable substance to a subject. The subject interface appliance includes a primary interface () configured to deliver a breathable substance to the subject, and a secondary interface () configured to obtain gas samples from the airway of the subject. The secondary interface is resiliently held at a default position with respect to the primary interface. The default position is located such that installation of the primary and secondary interfaces on the subject results in the application of a bias force to the secondary interface that holds the secondary interface in place. 1. A subject interface appliance configured to deliver a breathable substance to the airway of a subject , the subject interface appliance comprising:a primary interface including a mask barrier that encloses one or more external orifices of the airway of a subject including a first external orifice, wherein the mask barrier is shaped to form a delivery opening through which a breathable substance can be communicated to the one or more external orifices of the subject that are enclosed by the mask barrier; a hollow prong having a first end and a second end, the hollow prong being configured to be inserted into the first external orifice of the airway of the subject such that the first end of the hollow prong is positioned inside of the first external orifice and the second end of the hollow prong is positioned outside of the first external orifice, and a main conduit connected to the hollow prong at or near the second end to receive gas that has entered the first end of the hollow prong within the airway of the subject, the main conduit being configured to guide the received gas toward a sensor configured to generate an output signal conveying information related to one or more parameters of the sampled gas received into the secondary interface through the hollow prong; and', 'a resilient member extending from the primary interface to ...

RESPIRATORY 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. 1. A respiratory mask assembly comprising:a nasal engaging device having at least one post with a nasal engaging portion on about a first end thereof for delivering treatment gases to the nasal cavity of a patient, the nasal engaging portion comprising a flange portion configured for engaging with a sheet having an adhesive applied thereon for being adhered and providing sealable engagement with the nostrils of the patient; anda 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, the mask being further configured for sealable engagement about the patient's mouth.2. The mask assembly of claim 1 , wherein the at least one post comprises a circumferentially extending portion on a second end thereof that is configured for selective engagement with the at least one receptacle.3. The mask assembly of claim 1 , wherein the at least one post comprises a connector on a second end thereof for connecting with the at least one receptacle.4. The mask assembly of claim 1 , wherein the inlet comprises a swivel joint for allowing swiveling movement of the inlet about the mask.5. The mask assembly of claim 1 , ...

Respiratory Device Filter

A respiratory device filter () comprises a housing () having a mouthpiece () and a body (). The housing () defines an inner sidewall () and a conical filter () is disposed within the housing (). The conical filter () includes a first end that defines an apex () and a second end that defines an opening (). An apex retention member () extends from the inner sidewall () and is secured to the apex () of the conical filter (). 110. A filter () comprising:{'b': 12', '16', '18', '12', '34, 'a housing () having a mouthpiece () and a body (), the housing () defining an inner sidewall ();'}{'b': 14', '12', '14', '42', '44, 'a conical filter () disposed within the housing (), the conical filter () having a first end that defines an apex () and a second end that defines an opening (); and'}{'b': 46', '34', '42', '14, 'an apex retention member () extending from the inner sidewall () and secured to the apex () of the conical filter ().'}2101618. The filter () according to claim 1 , wherein the mouthpiece () and the body () are discrete elements that are securingly attached to one another and form a junction therebetween.310104714424716184414. The filter () according to claim 2 , wherein the filter () includes a flange () that axially extends from the second end of the conical filter () toward the apex () claim 2 , and wherein the flange () is nested in at least a portion of the junction between the mouthpiece () and the body () such that the opening () of the conical filter () is coincident with the junction.410162020222420. The filter () according to claim 3 , wherein the mouthpiece () has a first end () that defines an opening that is crescent shaped to thereby create a good seal around a user's mouth when in use claim 3 , and wherein the first end () includes a bite guard () surrounding the opening having a bead () extending therefrom to prevent a patient's mouth from slipping off the first end ().51016262818303132283230. The filter () according to claim 1 , wherein the ...

Liner for Use with Respiratory Mask

A liner for use with a respiratory mask having a face-engaging portion, such as a CPAP mask, includes a body constructed from an absorbent material, the body having an outer edge, an inner edge, and an opening bounded by the inner edge. A perimeter of the outer edge is larger than a perimeter of the face-engaging portion of the respiratory mask for forming an extending portion of the body, and the liner is configured to be releasably held by the mask and a user's face such that the outer edge extends beyond the face-engaging portion.

Apparatus and method for improved assisted ventilation

Devices and methods for allowing for improved assisted ventilation of a patient. The methods and devices provide a number of benefits over conventional approaches for assisted ventilation. For example, the methods and devices described herein permit blind insertion of a device that can allow ventilation regardless of whether the device is positioned within a trachea or an esophagus.

SPONTANEOUS BREATHING TRIAL MANAGER

This disclosure describes systems and methods for conducting and terminating spontaneous breathing trials on patients receiving mechanical ventilation. The disclosure describes a novel spontaneous breathing trial manager for a medical ventilator with rapid initiation and continuous monitoring of a patient's tolerance of the spontaneous breathing trial and displaying of that tolerance as a function of time, which provides for bedside adjustment of the spontaneous breathing trial parameters and automatic termination of a spontaneous breathing trial based on a time interval expiration or poor patient tolerance of the SBT. 120.-. (canceled)21. A method for managing a spontaneous breathing trial in a medical ventilator , comprising:receiving a spontaneous breathing trial threshold for a rapid shallow breathing index (RSBI);receiving a spontaneous breathing trial threshold for a tidal volume;receiving a spontaneous breathing trial threshold for an exhalation volume;initiating a spontaneous breathing trial for a patient being ventilated on a medical ventilator;receiving data from a plurality of sensors, the data including a plurality of sensor measurements taken during the spontaneous breathing trial, wherein the plurality of sensor measurements include a measured flow rate, a measured tidal volume, and a measured exhalation volume;determining a breath frequency based on the measured sensor measurements;determining a RSBI based on the sensor measurements and the determined breath frequency;displaying a graph of the determined RSBI, the measured tidal volume, and the measured exhalation volume versus time during the spontaneous breathing trial;displaying the received breathing trial threshold for the tidal volume, the received spontaneous breathing trial threshold for the exhalation volume, and the received spontaneous breathing trial threshold for the RSBI on the graph; anddisplaying a breach of the received breathing trial threshold for the tidal volume by the measured ...

COLLECTION 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. 1. A gas measurement correction database for determining a gas concentration at an inlet of an apparatus , the database stored on a non-transitory computer readable medium , the database populated by a method comprising:measuring a plurality of gas concentrations in the apparatus for a respective plurality of known gas concentrations at the inlet, wherein the gas concentrations are measured at a plurality of breath rates;deriving a first plurality of polynomial equations, wherein each of the first plurality of polynomial equations fits the measured gas concentrations of a respective one of the plurality of breath rates, and wherein each of the first plurality of polynomial equations comprises a coefficient at each order of the equation;deriving a second plurality of polynomial equations, wherein each of the second plurality of polynomial equations fits the coefficients of a respective order of the first plurality of polynomial equations, and wherein each of the second plurality ...

RESPIRATION MONITORING DEVICE

A respiration monitoring device configured to provide quantitative data output of respiration cycles of a human or animal. The device may be configured to output a respiration rate and/or a respiration waveform expressed as temperature verses time. The device comprises a temperature modifier to heat or cool a flow of exhaled air. This heated or cooled air then flows past a temperature sensor to determine a temperature change associated with each exhaled air cycle. 1. A respiration monitoring device comprising:an airflow inlet port to allow a flow of exhaled air from a human or an animal into the device;a temperature modifier to receive the flow of the exhaled air via the airflow inlet port and to heat the exhaled air;an electronic temperature sensor to detect a change in temperature of the exhaled air within the device; andan airflow tunnel configured to direct the flow of the exhaled air from the airflow inlet port to the temperature sensor, the temperature modifier positioned at and external to the tunnel so as to heat the exhaled air as the exhaled air flows through the tunnel;wherein the temperature sensor is positioned external to an open airflow exit end of the tunnel in an airflow path exiting the tunnel downstream of the temperature modifier to receive the heated flow of the exhaled air from the tunnel.2. The device as claimed in wherein the electronic temperature sensor comprises a thermistor.3. The device as claimed in wherein the thermistor is an NTC or PTC thermistor.4. The device as claimed in wherein the temperature modifier comprises a PTC heater.5. The device as claimed in further comprising a funnel extending from the airflow inlet port to direct the flow of the exhaled air into the airflow inlet port.6. The device as claimed in further comprising means to releasably attach the funnel to the device.7. The device as claimed in further comprising an airflow outlet port to allow the flow of the exhaled air to exit the device once the flow of the ...

Intubation-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. 1. A face mask for delivering breathable gas to a patient , comprising:a concave mask body having a peripheral edge, an outer surface, and an inner surface defining a cavity, adapted to fit over the mouth and at least the lower region of the nose of the patient;at least one diaphragm, wherein each one of said at least one diaphragm is sealed by a continuous, perforatable, modifiable membrane from which an instrument-access port can be manually constructed; anda standard oxygen tube connector configured to allow a tube delivering breathable gas to be attached.2. The face mask for delivering breathable gas to a patient claim 1 , as recited in claim 1 , further comprising a carbon dioxide sampling port configured to allow monitoring of expired gasses.3. The face mask for delivering breathable gas to a patient claim 1 , as recited in claim 1 , further comprising an exhaust port.4. The face mask for delivering breathable gas to a patient claim 1 , as recited in claim 1 , further comprising a nose clip ...

MASK AND METHOD FOR USE IN RESPIRATORY MONITORING AND DIAGNOSTICS

Disclosed is a mask for use in respiratory monitoring and/or diagnostics. The mask comprises at least one transducer responsive to sound and/or airflow for generating a signal, and a support structure to rest on the subject's face. In one embodiment, the support structure comprises two or more limbs that provide a transducer support for supporting the transducer at a distance from a nose and mouth area, allowing monitoring via the transducer of sound and/or airflow produced by the subject. Also described is a mask comprising a transducer responsive to airflow for generating a signal and a support structure to rest on the subject's face and extend outwardly over a nose and mouth area to provide a transducer support supporting the transducer at a distance from a nose and mouth area of the subject's face and at a preset orientation, for monitoring via the transducer of airflow produced by the subject. 1. A mask to be worn by a subject on its face for use in respiratory monitoring , the mask comprising:a transducer responsive to airflow for generating a signal representative thereof; anda support structure shaped and configured to rest on the subject's face, and comprising two or more outwardly projecting limbs that, upon positioning the mask, converge into a transducer supporting portion for supporting said transducer at a distance from a nose and mouth area of the subject's face, thereby allowing for monitoring via said transducer of airflow produced by the subject while breathing.2. The mask of claim 1 , said transducer comprising one or more transducers responsive to sound and airflow claim 1 , the mask thereby allowing for monitoring via said one or more transducers of both sound and airflow produced by the subject while breathing.3. The mask of claim 1 , each of said two or more outwardly projecting limbs having claim 1 , along at least a portion thereof claim 1 , an inward-facing channel defined therein for channeling at least a portion of said airflow toward ...

DEVICE AND METHOD FOR DETERMINING A FERTILE PHASE OF A WOMAN BY ASCERTAINING A CO2 PARTIAL PRESSURE IN A RESPIRATORY GAS OF THE WOMAN

The invention relates to a device () for determining a fertile phase of a woman by ascertaining a COpartial pressure in a respiratory gas of the woman in several consecutive breaths, comprising an inlet for receiving the respiratory gas, and an outlet, a sample chamber (), into which the respiratory gas can be conducted, a measuring module () with a measuring element () with which a COconcentration in the respiratory gas in the sample chamber () can be measured, optionally a pressure sensor () for measuring an air pressure, a processor () for processing measured data obtained by means of the measuring module () and the pressure sensor (), and at least one output unit () for outputting a result of the measured data. So that the method can be carried out by a woman herself quickly and nevertheless with high precision, it is provided according to the invention that the device () is embodied as a hand-held device and an algorithm is stored in the processor (), with which with a measurement based on several immediately consecutive breaths a predetermined reproducibility criterion regarding an end expiratory COpartial pressure of the respiratory gas can be tested, wherein, if the reproducibility criterion is met, the at least one output unit () outputs and/or signals and/or displays whether a fertile phase applies. Furthermore, the invention relates to a method for determining a fertile phase of a woman by ascertaining an end expiratory COpartial pressure in a respiratory gas and comparison of the measured data thus obtained with measured data in the follicle phase outside the fertile phase. 1. A device for determining a fertile phase of a woman by ascertaining a COpartial pressure in a respiratory gas of the woman in several consecutive breaths , comprising an inlet for receiving the respiratory gas , and an outlet , a sample chamber , into which the respiratory gas can be conducted , a measuring module with a measuring element with which a COconcentration in the ...

Computer controlled cpap system with snore detection

A CPAP apparatus is provided that determines the presence of a snore by the simplified method of using filtered expiratory noise as the measure of intrinsic device noise and comparing that to filtered inspiratory noise. The filtering time constants for inspiratory and expiratory noise are adjusted such that treatment pressure does not cause false snore detection.

Ventilation Mask with Integrated Piloted Exhalation Valve

In accordance with the present invention, there is provided a mask for achieving positive pressure mechanical ventilation (inclusive of CPAP, ventilator support, critical care ventilation, emergency applications), and a method for a operating a ventilation system including such mask. The mask of the present invention includes a piloted exhalation valve that is used to achieve the target pressures/flows to the patient. The pilot for the valve may be pneumatic and driven from the gas supply tubing from the ventilator. The pilot may also be a preset pressure derived in the mask, a separate pneumatic line from the ventilator, or an electro-mechanical control. The mask of the present invention may further include a heat and moisture exchanger (HME) which is integrated therein. 1. A ventilation mask , comprising:a housing sized and configured to be positionable between a patient's nose and mouth in contact with the patient's nose, the housing defining an internal fluid chamber, at least one gas delivery lumen which fluidly communicates with the fluid chamber, and a valve pilot lumen; and a valve housing defining a valve chamber which fluidly communicates with the fluid chamber, the pilot lumen and ambient air; and', 'a diaphragm disposed within the valve chamber, the diaphragm normally being biased to an open position wherein the fluid chamber fluidly communicates with ambient air via the valve chamber, and a closed position wherein fluid communication between the fluid chamber and ambient air is blocked thereby, the movement of the diaphragm from the open position to the closed position being facilitated by the selective pressurization of at least a portion of the valve chamber via the pilot lumen., 'a piloted exhalation valve attached to the housing and at least partially residing within the fluid chamber thereof, the exhalation valve comprising2. The ventilation mask of wherein the housing further defines a pressure sensing lumen which fluidly communicates with the ...

METHODS AND APPARATUS FOR THE MEASUREMENT OF PULMONARY PARAMETERS

An apparatus includes a mouthpiece to communicate an airflow between a user and an airflow chamber in fluid communication with the mouthpiece; an interrupter in fluid communication with the airflow chamber and adapted to initiate an occlusion event by adjusting between an open state and a closed state, such that fluid communication is at least partially prevented between the airflow chamber and ambient air during the occlusion event initiated by the interrupter; a container in fluid communication with the airflow chamber; a flow rate sensor in fluid communication with the airflow chamber and adapted to measure an airflow exchange between the airflow chamber and the container during the occlusion event; and a controller adapted to determine an instantaneous lung volume based on the measured airflow exchange between the airflow chamber and the container. 1. An apparatus , comprising:a mouthpiece adapted to communicate an airflow between a user and an airflow chamber in fluid communication with the mouthpiece;an interrupter in fluid communication with the airflow chamber and adapted to initiate an occlusion event by adjusting between an open state of the interrupter and a closed state of the interrupter, such that fluid communication is at least partially prevented between the airflow chamber and ambient air during the occlusion event initiated by the interrupter;a container in fluid communication with the airflow chamber;a flow rate sensor in fluid communication with the airflow chamber and adapted to measure an airflow exchange between the airflow chamber and the container during the occlusion event; anda controller adapted to determine an instantaneous lung volume based on the measured airflow exchange between the airflow chamber and the container.2. The apparatus of claim 1 , wherein the controller is adapted to determine an instantaneous lung volume based only on the measured airflow exchange between the airflow chamber claim 1 , container and ambient air.3. The ...

Ventilation Mask with Integrated Piloted Exhalation Valve

In accordance with the present invention, there is provided various tubing arrangements and an associated Y-connector which may be used to facilitate the operative interface of the mask to a ventilator within a ventilation system. The tubing arrangement may comprise a pair of bi-lumen tubes. One end of each of the bi-lumen tubes is fluidly connected to the mask, with the opposite end being fluidly connected to the Y-connector. The Y-connector is in turn fluidly connected to one end of either a tri-lumen tube or a quad-lumen tube also included in the tubing arrangement, the opposite end of such tri-lumen tube or quad-lumen tube being fluidly connected to the ventilator. The Y-connector is uniquely configured to fluidly connect certain lumens of the tri-lumen tube or the quad-lumen tube to dedicated, corresponding ones of the lumens included in respective ones of the bi-lumen tubes, and to further allow for the selective detachment of the tri-lumen tube or the quad-lumen tube from the bi-lumen tubes. 1. A respiratory assistance system , comprising:a flow generator;a ventilation mask; and a multi-lumen tube which is fluidly coupled to the flow generator;', 'a first bi-lumen tube which has a generally teardrop-shaped cross-sectional configuration, and is fluidly coupled to and extends between the multi-lumen tube and the ventilation mask; and', 'a second bi-lumen tube which has a generally teardrop-shaped cross-sectional configuration, and is fluidly coupled to and extends between the multi-lumen tube and the ventilation mask., 'a fluid conduit fluidly coupling the flow generator to the ventilation mask, and comprising2. The respiratory assistance system of wherein:the multi-lumen tube defines at least a gas delivery lumen, a valve pilot lumen and a pressure sensing lumen which are each fluidly coupled to the flow generator;the first bi-lumen tube defines a gas delivery lumen which is fluidly coupled to and extends between the gas delivery lumen of the multi-lumen tube ...

Disposable hand-held device for collection of exhaled breath condensate

A breath condensate collection apparatus comprising a central chamber, a breath input assembly, a plunger assembly and a breath condensate collection port. The central chamber has inner and outer side walls with a coolant material sealed in between. The breath input assembly is disposed on the side of the central chamber in fluid communication with the chamber interior. The plunger assembly has a piston, slidably disposed in the chamber, and a handle extending from a first end of the chamber. The collection port is disposed at the second end of the central chamber in fluid communication with the interior of the chamber. Obstructive structures may be arranged in the chamber interior for increasing the surface area on which condensate may form. The apparatus may also include an outlet assembly that may be removed and replaced with a sampling well into which the condensate may be washed with a buffer solution.

MEDICAL DEVICE SYSTEM

The invention provides a medical device system comprising at least two technologies wherein at least one technology is based on bio-impedance measuring and/or at least one technology is based on spectrophotometry measurements wherein software cross analyses the results to assess the homeostasis of an individual. The technologies measure a variety of parameters. In one embodiment the bioimpedance measuring equipment measures in bipolar mode and in tetrapolar mode and the spectophotmeter measuring equipment comprises a pulse oximeter. The system and homeostasis score can be used to determine and monitor therapy for a patient. 1. A medical device system comprising at least two technologies wherein at least one technology is based on bio-impedance measuring and/or at least one technology is based on spectrophotometry measurements wherein software cross analyses the results to assess the homeostasis of an individual.2. A system as claimed in wherein a series of medical devices measure a variety of parameters using different technologies and software compiles the results of these to provide a homeostasis score.3. A system as claimed in comprising at least a pulse oximeter which provides a vascular waveform in combination with other biosensors and software.4. A system as claimed in which further includes EKG monitor claim 1 , blood glucose meter claim 1 , spirometer.5. A system as claimed in comprising at least 4 biosensors wherein signal processing-analysis is managed by software.6. A system as claimed in wherein the technologies include a) bioimpedance in bipolar mode (ElS sensor) claim 5 , b) bioimpedance in tetrapolar mode (ES-BC sensor) claim 5 , c) a spectrophotometer (ESO sensor) and d) oscillometric measurements. (NlBP sensor)7. Use of a system as claimed in to establish a homeostasis score for a patient.8. A medical device system to assess the homeostasis of an individual claim 1 , the system comprising bio impedance measuring equipment and spectophometry ...

METHOD AND SYSTEM FOR MONITORING RESPIRATORY GASES DURING ANESTHESIA

An e-nose device employing chemiresistive sensors with a thin nanoparticle film allows to perform a fast and accurate analysis of respiratory gases during anesthesia in real-time over the entire breathing cycle. A combinatorial selection of nanoparticles and organic linker molecules in the nanoparticle film allows to achieve a high selectivity, which is particularly suitable for detecting a change of anesthetics or analgesics over time. 110. A system () adapted for monitoring respiratory gases during anesthesia , comprising:{'b': '30', 'a sensor means comprising a sensor array () with a plurality of chemiresistive sensors; and'}{'b': 14', '14, 'a conduct means adapted for supplying, to said chemiresistive sensors, an inhaled gas of a subject () and/or an exhaled gas of said subject ();'}{'b': 14', '14, 'wherein said sensor means are adapted to monitor said inhaled gas of said subject () and/or said exhaled gas of said subject () by analyzing a gas sample supplied via said conduct means to said chemiresistive sensors;'}{'b': 32', '32', '34', '36, 'wherein said chemiresistive sensors comprise a nanoparticle film with a nanoparticle network (), said nanoparticle network () formed of nanoparticles () interlinked through linker molecules (); and'}wherein a thickness of said nanoparticle film is no greater than 100 nm, preferably no greater than 50 nm.21032. The system () according to claim 1 , wherein said nanoparticle network () in at least one of said chemiresistive sensors does not comprise a polymer.31036. The system () according to claim 1 , wherein said linker molecules () in at least one of said chemiresistive sensors comprise non-linear polymer molecules or oligomer molecules claim 1 , in particular dendrimer molecules.41034323436. The system () according to claim 1 , wherein said nanoparticles () in said nanoparticle network () are arranged in a plurality of layers claim 1 , wherein nanoparticles () of adjacent layers are connected by said linker molecules (). ...

DIVIDED CANNULA WITH EACH NARE COMMUNICATING WITH EACH FLOW PATH

A divided cannula comprising a cannula body which is divided by a partitioning wall into first and second flow chambers. The first flow chamber has first and second spaced apart nare passages while the second flow chamber has first and second spaced apart nare passages. The cannula body supports spaced apart first and second nares and each of the first and the second nares defines a common nare passage. The first nare passage of the first internal flow chamber and the first nare passage of the second internal flow chamber both communicate with the common nare passage of the first nare and the second nare passage of the first internal flow chamber and the second nare passage of the second internal flow chamber both communicate with the common nare passage of the second nare. A pressure sensing line and a gas supply line interconnected to the divided cannula with a gas supply system.

System for airborne bacterial sample collection and analysis

An aerosol biological collector/analyzer, and method of collecting and analyzing an aerosol sample for diagnosis is provided. In particular, the current invention is directed to an airborne aerosol collection and bacterial analysis system and method, capable of collecting an airborne aerosol sample and preparing it for analysis via aerodynamic shock in a single-step.

AIRWAY ADAPTOR AND BIOLOGICAL INFORMATION ACQUIRING SYSTEM

An airway adaptor includes: an airway case including a gas passage, the airway case adapted to be attachable to a part of a carbon dioxide sensor configured to detect a concentration of carbon dioxide contained in exhalation, flowing into the gas passage, of the subject, the exhalation; a nasal cannula having a pair of insertion portions inserted into nostrils of the subject to guide exhalation from the nostrils to the gas passage; a mouth guide placed in front of a mouth of the subject to guide exhalation from the mouth to the gas passage; a light-emitting element supported by one of the insertion portions; and a light-receiving element supported by the other of the insertion portions. When the insertion portions are inserted into the nostrils, the light-emitting element and the light-receiving element are opposed to each other across a nasal septum of the subject. 1. An airway adaptor which is adapted to be attached to a face of a subject , the airway adaptor comprising:an airway case which includes a gas passage, the airway case adapted to be attachable to a part of a carbon dioxide sensor configured to detect a concentration of carbon dioxide contained in exhalation of the subject, the exhalation flowing into the gas passage;a nasal cannula having a pair of insertion portions which are adapted to be inserted respectively into nostrils of the subject to guide exhalation from the nostrils to the gas passage when the airway adaptor is attached to the face;a mouth guide adapted to be placed in front of a mouth of the subject to guide exhalation from the mouth to the gas passage when the airway adaptor is attached to the face;a light-emitting element supported by one of the pair of insertion portions; anda light-receiving element supported by the other of the pair of insertion portions, whereinwhen the pair of insertion portions are inserted into the nostrils of the subject, the light-emitting element and the light-receiving element are opposed to each other across a ...

Apparatus and method for the collection of samples of exhaled air

An apparatus for the collection of samples of exhaled air during normal respiration, comprising a flow generator, an orally insertable exhalation air receiver, and a device for isolating the nasal airways, wherein the apparatus further comprises: a sensor for detecting a change in a parameter representing the change from inhalation to exhalation and to transmit said change as a signal; a control unit adapted to receive said signal and to control said device for isolating the nasal airways; wherein the flow generator is connected to or integrated with the exhalation air receiver. A method of collecting samples of exhaled air during normal respiration conditions, comprising the steps of: detecting a change in a parameter representing the change from inhalation to exhalation and transmitting said change as a signal; receiving said signal in a control unit; activating a device for isolating the nasal airways; activating a flow generator connected to an exhalation air receiver; and collecting a sample of exhaled air during exhalation when the nasal airways are isolated.

System and method for remote collection and analysis of volatile organic components in breath

A tool for telemedicine including an improved breath collection system of human breath to facilitate the analysis of volatile organic components (VOCs) contained in human breath in which breath tests can be performed at remote sites for rapid detection of different diseases. The system can include a standoff breath collection device including an arcuate structure for concentration and analysis of volatile organic components (VOCs) at the point-of-use that avoids the use of mouthpieces found in conventional breath collection apparatuses.

INTEGRATED ANALYSIS DEVICE FOR SIMULTANEOUSLY DETECTING EBCS AND VOCS IN HUMAN EXHALED BREATH

The present invention discloses an integrated analysis device for simultaneously detecting exhaled breath condensates (EBCs) and volatile organic compounds (VOCs) in human exhaled breath. The device comprises a module for sampling, separating and enriching a detected object, an EBCs detection module and a combined VOCs detection module. The module for sampling, separating and enriching a detected object is connected with the EBCs detection module via a syringe pump for sample injection. The module for sampling, separating and enriching a detected object is connected with the combined VOCs detection module by a capillary separation column. In the present invention, it is achieved that EBCs and VOCs in human exhaled breath are simultaneously sampled, separated and condensed; the heavy metal ions, cell factors, etc. in the collected EBCs are detected with a light addressable potentiometric sensor (LAPS); the condensed VOCs can be quantitatively detected by the combined VOCs detection module with a high sensitivity; and a heating rod and a platinum resistor can be conveniently replaced because a separated outlet heating piece is designed in the combined VOCs detection module. 1575859606162636465676869575859656463606161606768696968667062606268. An integrated analysis device for simultaneously detecting EBCs and VOCs in human exhaled breath , characterized in that it comprises a module for sampling , separating and enriching a detected object , an EBCs detection module and a combined VOCs detection module; the module for sampling , separating and enriching a detected object is connected with the EBCs detection module via a syringe pump for sample injection , and the module for sampling , separating and enriching a detected object is connected with the combined VOCs detection module via a capillary separation column; wherein the EBCs detection module comprises an EBC inlet () , an inlet for washing liquid () , a first three-way valve () , a composite LAPS sensor for heavy ...

CARBON DIOXIDE-SENSING AIRWAY PRODUCTS AND TECHNIQUE FOR USING THE SAME

An airway device is provided that may track the flow of respiratory gases through the device with sensing elements at a plurality of locations along the gas flow path of the device. Such a device may be useful for assessing a variety of clinical states, for adjusting patient ventilator settings, or for determining whether or not an airway device has been properly inserted into a patient airway. 1. A method comprising:receiving signals from a first carbon dioxide sensor disposed at a first location on a patient breathing circuit and a second carbon dioxide sensor disposed at a second location on the patient breathing circuit;determining a concentration of carbon dioxide gas over time at the first location;determining a concentration of carbon dioxide gas over time at the second location;determining a velocity of the carbon dioxide gas between the first location and the second location; anddetermining a change in physiological dead space, wherein the change in physiological dead space is determined based on a volume of the breathing circuit between the first location and the second location, the concentration of carbon dioxide gas at the first location and the second location, and the velocity of the carbon dioxide gas between the first location and the second location.2. The method of claim 1 , comprising determining from the change in the non-gas-exchanging physiologic volume that the patient has experienced a respiratory event.3. The method of claim 1 , comprising determining from the change in the non-gas-exchanging physiologic volume that the patient has experienced a pulmonary embolism.4. The method of claim 1 , comprising triggering an indicator if the change in the non-gas-exchanging physiologic volume is beyond a critical threshold.5. The method of claim 4 , wherein the indicator comprises an alarm.6. The method of claim 4 , wherein the indicator comprises instructions related to a treatment protocol.7. A medical device comprising:a conduit adapted to ...

Biological information monitoring apparatus

A biological information monitoring apparatus includes: a measurer which is configured to measure biological information of a subject; a display on which a measurement value of the biological information measured by the measurer is displayed; a calibration controller which, when a predetermined condition is satisfied, is configured to perform a calibration process on the measurer; a time measurer which is configured to acquire a remaining time before the calibration process is ended; and a display controller which is configured to cause an index indicating the remaining time to be displayed on the display.

METHOD FOR MEASURING BREATH ALCOHOL CONCENTRATION AND APPARATUS THEREFOR

The present invention relates to a method and apparatus for measuring breath alcohol concentration of a user. A flow of an expired breath sample is passed through a fuel cell sensor giving an output signal proportional to the amount of alcohol present in the breath sample. By measuring the flow rate, the volume of the breath sample may be calculated, whereas the breath alcohol concentration is calculated based on the fuel cell output signal. Both the sample volume and the breath alcohol concentration values are continually updated by integrating the measured instantaneous flow rate and the fuel cell output signal over time. If the user stops blowing, flow compensation is performed to obtain a compensated fuel cell output signal using a stored calibration volume. Hence, an improved method for accurately measuring the breath alcohol concentration of a test person is achieved, capable of handling varied expired volumes of breath, which obviates the need for a sampling mechanism. 1. A method for measuring breath alcohol concentration (BrAC) of a user , comprising the steps of:(I) receiving a flow of an expired breath sample from the user;(II) measuring the flow rate (Q) of the breath sample;{'sub': 'b', '(III) calculating the breath sample volume Vof the based on the measured flow rate (Q)(IV) leading the breath sample into a fuel cell sensor{'sub': 'out', '(V) calculating the breath alcohol concentration (BrAC) based on an output signal (FC) of the fuel cell sensor;'}{'sub': b', 'out', 'b, '(VI) updating continually the breath sample volume (V) and the breath alcohol concentration (BrAC) by integrating the measured instantaneous flow rate (Q) and the fuel cell output signal (FC) over time, irrespective of the breath sample volume (V); and'}{'sub': out', 'cal', 'comp, '(VII) performing the step of compensating the fuel cell output signal (FC) using a stored calibration volume (V) to obtain a final compensated fuel cell output signal (FC), before calculating the final ...

Endoscope system

An endoscope system includes an illumination unit which includes a modulation section configured to control a visible light source so that visible light from the visible light source is subjected to intensity modulation in a predetermined pattern, and emits modulated visible light as illumination light, a detection section configured to detect the modulated visible light, and a determination section configured to determine whether an insertion portion of an endoscope is present in an object based on a detection result of the detection section. The illumination unit is arranged outside the object, and the detection section is arranged at the insertion portion.

RESPIRATION MEASUREMENTS AND DOSIMETRY CONTROL IN INHALATION TESTING SYSTEMS

Inhalation measurement systems and methods enable, during inhalant exposure, substantially real-time respiratory measurements of a test subject using techniques that obtain measurements of respiration directly from that test subject, instead of from inhalation chamber parameter measurements. Direct test subject respiratory measurements may be, by way of example only, impedance measurements. These respiratory measurements taken directly from the test subject may be transmitted, wirelessly for example, for processing during the course of the test to a processing system to determine a cumulative volume of inhalant inspired by the test subject. From that, a cumulative amount of inhalant (or dose) inspired by the test subject may be determined during the course of the inhalation compound test. In addition, a calibration procedure may be performed before the inhalant exposure to provide correlation needed to translate chest and/or abdominal wall expansion measurements, made during the test, into lung volume measurements. 121-. (canceled)22. A method of performing an inhalation test on a subject during which inhalation test the test subject is at least partially confined within a test chamber and an inhalant substance is introduced into the test chamber , the method comprising:collecting during the course of the inhalation test respiration-related measurements for respiration cycles of the test subject using the sensing device applied directly to the test subject; andtiming inhalant concentration changes to a particular phase within a respiratory cycle.23. The method of claim 26 , wherein the respiratory inhalation test further comprises:determining, from the respiratory pattern of the test subject, whether a particle size of the inhalant needs to be modified; andmodifying the inhalant particle size in accordance with the determination.24. The method of claim 22 , wherein the respiratory inhalation test further comprises determining claim 22 , from the position in time ...

AUTOMATED SPIROGRAM ANALYSIS AND INTERPRETATION

Automated analysis and interpretation of spirograms is provided to assess lung function of a subject. If the shape of a spirogram plot is deemed suitably reliable, the spirogram may be subsequently used for diagnostic purposes. Quality control of spirograms and/or interpretation of reliable spirograms may use shape templates corresponding to common test problems and/or typical lung diseases. 1. A method for assessing lung function of a subject , the method being implemented in a diagnostic device configured to execute one or more computer program modules , the method comprising:receiving expiratory airflow from the airway of the subject during an expiration by the subject;measuring, from the received expiratory airflow, expiratory volume during the expiration by the subject;creating a plot representing expiratory volume during the expiration, wherein the plot has a shape;determining the reliability of the measured expiratory volume during the expiration in assessing lung function of the subject; andassessing, based on the shape of the plot, lung function characteristics of the subject.2. The method of claim 1 , wherein assessing the lung function characteristics of the subject is performed responsive to a determination that the measured expiratory volume during the expiration is suitably reliable.3. The method of claim 1 , wherein determining the reliability of the measured expiratory volume is based on the shape of the plot.4. The method of claim 3 , wherein determining the reliability of the measured expiratory volume comprises comparing the plot with a set of shape templates corresponding to unreliable measurements of expiratory volume.5. The method of claim 1 , wherein determining the reliability of the measured expiratory volume comprises determining a quality quantifier that represents the reliability of the measured expiratory volume in assessing lung function.6. A system for assessing lung function of a subject having an airway claim 1 , the system ...

Processing a video for tidal chest volume estimation

What is disclosed is a system and method for estimating tidal chest volume using 3D surface reconstruction based on an analysis of captured reflections of structured illumination patterns from the subject with a video camera. The imaging system hereof captures the reflection of the light patterns from a target area of the subject's thoracic region. The captured information produces a depth map and a volume is estimated from the resulting 3D map. The teachings hereof provide a non-contact approach to patient respiration monitoring that is particularly useful for infant care in a neo-natal intensive care unit (NICU), and can aid in the early detection of sudden deterioration of physiological condition due to detectable changes in respiratory function. The systems and methods disclosed herein provide an effective tool for tidal chest volume study and respiratory function analysis.

System, Method and Device for Aiding in the Diagnosis of Respiratory Dysfunction

A system and method for aiding in the diagnosis of a respiratory dysfunction is described. More particularly, a system and method for aiding in the diagnosis of one or more pulmonary embolisms is described. The system and method described herein include a plurality of sensors, a thermal control system, and a controller coupled to the plurality of sensors and the thermal control system for aiding in the diagnosis of a respiratory dysfunction. 1. A device for aiding in the diagnosis of a respiratory dysfunction , the device comprising an airway defining a longitudinal axis and having an inlet and an outlet through which a user breathes , the device comprising:a stationary flow restrictor for restricting the flow of air disposed within the airway, the restrictor comprising a plurality of openings and occlusions, the restrictor effective for causing a buildup of air pressure in the airway and oriented such that each inhaled and exhaled breath of air passing through the airway is diverted in part out of the airway and into a sensor disposed in a first bypass channel adjacent to the airway and in fluid communication with the airway, wherein portions of each inhaled and exhaled breath of air simultaneously pass through the airway and the first bypass channel, wherein the airway defines a first pair of ports through which air may be diverted from the airway into the first bypass channel at an airtight junction; anda second bypass channel adjacent to the airway and in fluidly connected to the airway,wherein the airway defines a second pair of ports through which air may be diverted from the airway into the second bypass channel at an airtight junction,wherein the second bypass channel houses an oxygen sensor therein and/or thereon for measuring the concentration of oxygen in a breath to aid in the determination of respiratory dysfunction, andwherein the stationary flow restrictor disposed within the airway directs a portion of the flow of air out of the airway and into the ...

APPARATUS FOR TRACKING COMPLIANCE WITH A TREATMENT FOR OBSTRUCTIVE SLEEP APNEA

The invention relates to an apparatus () for tracking a treatment for obstructive sleep apnea, including a gas passage () and a Venturi tube () having a cylindrical inlet () and outlet (), said Venturi tube () being axially arranged in said gas passage (), a first pressure sensor (), and a second pressure sensor (). The diameters (D) of the inlet () and outlet () of the Venturi tube () are between 10 and 25 mm. The Venturi tube () includes, arranged in series between said inlet () and outlet (), a convergent portion () having the shape of an arc (), a cylindrical neck (), the diameter of which is smaller than the diameter (D) of the inlet (), and a divergent portion () characterized by an angle of divergence (α) of between 5° and 15°. The invention also relates to equipment for treating sleep apnea, which includes a pressurized-gas source () connected to a breathing mask () via a gas duct (), as well as to an apparatus () according to the invention, which is arranged between said gas source () and said breathing mask (). 124101640421610101102. An apparatus ( , ) for monitoring a treatment for obstructive sleep apnea comprising a gas passage () and a venturi tube () having a cylindrical inlet () and outlet () , said venturi tube () being arranged axially in said gas passage () , a first pressure sensor () and a second pressure sensor () , characterized in that{'b': 1', '40', '42', '16, 'the diameters (D) of the inlet () and the outlet () of the venturi tube () are between 10 and 25 mm, and'}{'b': 16', '40', '42', '44', '46', '48', '50', '1', '40', '52, 'the venturi tube () comprises, arranged in succession between said inlet () and outlet (), a convergent portion () in the form of a circular arc (, ), a cylindrical neck () with a diameter smaller than the diameter (D) of the inlet (), and a divergent portion () characterized by an angle of divergence (α) of between 5° and 15°,'}{'b': 2', '50', '16', '2', '50', '16, 'and in which the diameter (D) of the neck () of the ...

ENDOSCOPIC 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. 128-. (canceled)29. A detachably connectable bite block assembly comprising: an oxygen delivery bore in fluid connection with at least one delivery opening and an oxygen supply tube, and', 'an exhaled breath collection bore in fluid connection with an oral prong, at least one nasal prong and a breath collection tube; and, '(a) an oral-nasal cannula configured to collect exhaled breath for capnographic monitoring and to deliver oxygen, said oral-nasal cannula comprising ["a hollow tubular portion configured for insertion into a subject's mouth, said hollow tubular portion configured to engage, on an outer portion thereof, said oxygen supply tube and thereby to detachably connect said bite block with said oral-nasal cannula, such that when said oxygen supply tube is engaged on said hollow tubular portion a valve is configured to open, and when said oxygen supply tube is disassembled from said hollow tubular portion the valve is configured to close; and", 'a main body portion from which said hollow tubular portion extends, said main body portion comprising a longitudinal groove configured to detachably accommodate said oral prong of said oral-nasal cannula, such that oral breath exhaled through said hollow tubular portion is directed towards said groove for collection by said oral prong., '(b) a bite block comprising30. The bite block assembly according to claim 29 , wherein said valve comprises a normally closed valve.31. The bite block assembly according to claim 30 , wherein said normally ...

FUNCTIONAL ASSESSMENT AND TREATMENT CATHETERS AND METHODS FOR THEIR USE IN THE LUNG

Lung conditions are diagnosed and optionally treated using a functional assessment catheter or a functional lung assessment and treatment catheter. A flow restrictive component is initially placed in a bronchus or lung passageway upstream from a diseased lung region. The isolated lung region is then functionally assessed through the catheter, while the flow restrictive component remains in place. If the patient is a good candidate for treatment by occlusive or restrictive treatment techniques, the flow resistive component may be left in place. If the patient is not suitable for such treatment, the flow resistive component may be removed. 1. A functional assessment catheter for the lungs , said catheter comprising:a catheter shaft having a distal and a proximal end, and a central passage therebetween;a flow restrictive component disposed at the distal end of the catheter shaft, wherein the flow restrictive component has an expanded configuration and a contracted configuration; andan obturator disposed in the central passage and shiftable between a distally advanced position where it engages and elongates the flow restrictive component to cause the component to assume the contracted configuration, and a proximally retracted position where it allows the flow restrictive component to shorten and return to the expanded configuration.2. A functional assessment catheter as in claim 1 , wherein the flow restrictive component comprises a resilient scaffold and an elastomeric covering.3. A functional assessment catheter as in claim 2 , wherein the resilient scaffold comprises counter wound helical supports.4. A functional assessment catheter as in claim 1 , wherein a flow path is formed through the flow restrictive component so that gas may flow through the catheter shaft and through the flow restrictive component.5. A functional assessment catheter as in claim 4 , wherein the flow path comprises the central passage and an opening in a distal side of the elastomeric covering. ...

METHODS AND DEVICES FOR MONITORING CARBON DIOXIDE

Various embodiments provide a medical device for monitoring an exhaled breath from a patient. Some embodiments include a tubular portion and a distal member comprising an at least partially shielded sampling hole. 1. A tip for sampling exhaled breath from a patient , the tip comprising:a tubular portion comprising an exterior surface, an interior surface and a lumen formed by the interior surface to fluidly communicate the exhaled breath; anda distal member coupled to the tubular portion such that at least a portion of the distal member is located distally relative to at least a portion of the tubular member, the distal member comprising a distal end and a proximal end, wherein the distal end faces a distal direction and the proximal end faces a proximal direction, the proximal end comprising at least one hole in fluid communication with the lumen.2. The tip according to claim 1 , wherein the distal end comprises a hole in fluid communication with the lumen.3. The tip according to claim 1 , wherein the tip comprises at least one strut that couples the tubular portion to the distal member.4. The tip according to claim 1 , wherein the tip comprises at least two struts that couple the tubular portion to the distal member claim 1 , wherein the struts extend radially outward from the tubular portion towards the distal member and the struts are configured to provide structural support to the distal member.5. The tip according to claim 4 , wherein the tip comprises a passage located between the struts and the passage is in fluid communication with the lumen of the tubular portion and the hole of the proximal end of the distal member such that the tip is configured to enable the exhaled breath from the patient to enter the hole claim 4 , then move through the passage claim 4 , and then move through the lumen.6. The tip according to claim 5 , wherein the lumen comprises a central axis and the passage is oriented at an angle of at least eight degrees relative to the central ...

METHOD AND APPARATUS FOR PULMONARY VENTILATION IMAGING USING LOCAL VOLUME CHANGES

The invention provides a novel method of high-resolution quantifiable pulmonary regional ventilation imaging using a package of computer programs, including deformable image registration and local volume change calculation on 4-D or breath-hold CT images. High resolution 3D ventilation images have been generated using this technique with superior quality. The deformation matrices between different respiration phases are calculated using deformable image registration and applied to calculate local volume change ΔV between respiration phases. The invention provides less image-noise and mismatch sensitivity than other techniques based on CT images, and is less expensive than nuclear medicine imaging. Implemented clinically, the method can derive a patient's pulmonary ventilation information from the same set of 4-D CT images, providing a cheaper but more accurate method to generate clinical lung ventilation image. Such information can be utilized in treatment planning sparing functional lung volumes without additional procedure and cost for lung functional imaging. 1. A method of producing a ventilation image , comprising:receiving two image data sets, wherein at least a portion of a patient's lung is represented by the two image data sets;determining an initial volume, V, for each of a plurality of local volume elements based on a first of the two image data sets;calculating a local volume change, ΔV, between the two image data sets for each local volume element;calculating ΔV/V for each local volume element;producing a ventilation image having a plurality of ventilation image voxels, wherein each ventilation image voxel corresponds to one or more of the local volume elements and is represented by an indicator corresponding to the one or more ΔV/V value for the corresponding one or more local volume element.2. A method of producing a ventilation image , comprising:receiving m image data sets, wherein at least a portion of a patient's lung is represented by the m image ...

SENSOR DEVICE AND MOUTHPIECE

The present invention relates to gas sensing devices and to mouthpieces therefor. More particularly it relates to gas sensor devices for detecting gases in exhaled air, and to improved mouthpieces and mouthpiece interfaces for use with such devices. The invention also provides methods for using such devices and kits. 1. An interface for the attachment of a mouthpiece to a gas sensor device , the interface comprising a first mouthpiece engaging means for engaging a first type of mouthpiece , and a second mouthpiece engaging means for engaging a second type of mouthpiece , the interface comprising an inlet positioned such that in use it is in fluid communication with the lumen of a mouthpiece mounted on either the first or the second mouthpiece engaging means.2. The interface of claim 1 , wherein the first mouthpiece engaging means is adapted to engage a larger mouthpiece than the second mouthpiece engaging means.3. The interface of claim 1 , wherein the first and/or second mouthpiece engaging means comprises a flange adapted to engage with the mouthpiece.4. The interface of claim 1 , wherein the first and/or second mouthpiece engaging means comprises a recess adapted to engage with the mouthpiece.5. The interface of claim 3 , wherein the first and second mouthpiece engaging means each comprises a flange.6. The interface of claim 1 , wherein the first and second mouthpiece engaging means are defined by a flange claim 1 , the outside of the flange defining the first mouthpiece engaging means and the inside of the flange defining the second mouthpiece engaging means.7. The interface of claim 1 , wherein the first and/or second mouthpiece engaging means defines a circle or ellipse.8. The interface of claim 7 , wherein both the first and second mouthpiece engaging means define a circle or ellipse.9. The interface of claim 8 , wherein the first mouthpiece engaging means defines an ellipse and the second mouthpiece engaging means defines a circle.10. The interface of claim ...

ENDOSCOPIC BITE BLOCK

An endoscopic bite block, with teeth position defining regions which guide the subject's teeth to grip the bite block in their natural position, with the teeth of the upper jaw positioned further out than the lower jaw teeth. These teeth position defining regions are also preferably curved to match the curved shape of the jaw. The upper and lower parts of the front plate of the bite block may also be positioned at different distances out, so that upper and lower lip regions both contact the front plate snuggly. The bite block may be used with separate oral/nasal cannulae, or may incorporate breath sampling or gas supply cannulae. A flexible flapped curtain at the outer end of the bite block may be provided to largely enclose the inner volume of the bite block to enable more accurate capnographic sampling under conditions of wide-open mouth breathing. 132-. (canceled)33. An endoscopic bite block , comprising:a tubular body comprising an inner end section adapted for insertion into the mouth of a subject, an outer end section adapted for insertion of an endoscopic probe, a central channel, an upper wall having an upper outer surface, and a lower wall having a lower outer surface;a front plate connected to said outer end section of said tubular body; andteeth positioning regions across at least part of said upper and lower outer surfaces, said teeth positioning region in said upper surface being disposed outwardly relative to said teeth positioning region in said lower surface.34. The endoscopic bite block according to claim 33 , and wherein at least one of said upper and lower surfaces has a generally flattened portion on which its associated teeth positioning region is disposed.35. The endoscopic bite block according to claim 33 , and wherein at least one of said teeth positioning regions is curved in the plane of its associated surface to approximate the curve of the teeth in a human jaw.36. The endoscopic bite block according to claim 33 , and wherein at least one ...

Mainstream Gas Analyzer Configurable To Removably Couple With A Sidestream Gas Sampling Component

Systems and methods for analyzing respiratory gas are configured to function in both divertive and non-divertive configurations. A mainstream gas analyzer housing economically and removably couples with a sidestream gas sampling component.

METHOD DEVICE AND SYSTEM FOR MONITORING LUNG VENTILATION

A method of monitoring lung ventilation of a subject is disclosed. The method comprises recording signals from a plurality of sensing location on the chest of the subject, at least a portion of the signals being indicative of a local motion of the chest at a respective sensing location. The method further comprises operating a data processing system to analyze the signals such as to determine a status of the ventilation, thereby to monitor the lung ventilation of the subject. 1. A method comprising:receiving signals from a plurality of sensing locations on a chest of a subject, at least a portion of said signals being indicative of a local motion of said chest at a respective sensing location, and continuously monitoring ventilation and functional volume changes of the chest using data of the local motion of the chest.2. A method comprising:receiving signals from a plurality of sensing locations on a chest of a subject, at least a portion of said signals being indicative of a local motion of said chest at a respective sensing location, and continuously monitoring ventilation and heart function using data of the local motion of the chest.3. A method comprising:receiving signals from a plurality of sensing locations on a chest of a subject, at least a portion of said signals being indicative of a local motion of said chest at a respective sensing location,receiving signals from an epigastric location of the subject,and detecting an air leak to an esophagus of the subject. This application is a continuation of U.S. patent application Ser. No. 12/162791, filed Jul. 31, 2008, now U.S. Pat. No. 8,226,571.In the medical treatment of patients requiring breathing assistance, it is common to insert an endotracheal or nasotracheal tube into the trachea of the patient, by way of the mouth, nose or any other surgically created opening. One end of the tube is connected to a ventilator which periodically forces air into the lungs through the tube. In big children and adult ...

Inline Water Trap

An inline water trap including a filter component and a panel connector configured to interface with a patient gas monitor. In one embodiment the inline water trap indicates to the patient gas monitor that it is in place and that the patient gas monitor may begin intaking and analyzing the filtered patient sample. The inline water trap receives a patient sample and filters water and contaminants from the sample before allowing the remaining gas portion of the sample to pass through to the patient gas monitor, thereby protecting the patient gas monitor from damage. One embodiment of the inline water trap additionally contains an RFID tag to indicate to the patient gas monitor that the correct type of inline water trap is engaged. 1. An inline water trap , including a panel connector of a respiratory gas monitor , the inline water trap comprising:a filter component defining a bore, the filter component including a filter body including a filter inlet and a filter outlet in fluid communication through the bore, the filter component further including a panel connector engagement portion; anda filter element disposed within the bore, the filter element configured to allow gas to pass through the bore while preventing at least one of water and contaminants from passing through the bore;the panel connector defining a filter component engagement portion configured to selectively engage the panel connector engagement portion of the filter component for securing the filter component to the panel connector; anda sensing arrangement comprising first and second cooperative elements providing operative communication between the filter component and the respiratory gas monitor to enable gas monitoring and detecting components of the respiratory gas monitor to operate-when the filter component is engaged with the panel connector.2. The inline water trap of claim 1 , wherein the sensing arrangement comprises mechanical communication between the filter component and the panel ...

AIRWAY ADAPTOR, BIOLOGICAL INFORMATION ACQUIRING SYSTEM, AND OXYGEN MASK

An airway adaptor includes: a gas passage into which a respiratory gas of a subject is to flow; a respiratory gas introducing portion which is configured to guide the respiratory gas expired from at least one of nostrils and a mouth of the subject, to the gas passage; and an airway case on which a temperature sensor that is configured to detect a temperature change of the respiratory gas flowing into the gas passage is mountable. 1. An airway adaptor comprising:a gas passage into which a respiratory gas of a subject is to flow;a respiratory gas introducing portion which is configured to guide the respiratory gas expired from at least one of nostrils and a mouth of the subject, to the gas passage; andan airway case on which a temperature sensor that is configured to detect a temperature change of the respiratory gas flowing into the gas passage is mountable.2. The airway adaptor according to claim 1 , wherein a nasal cannula which is configured to guide the respiratory gas expired from the nostrils of the subject, to the gas passage; and', 'a mouth guide which is configured to guide the respiratory gas expired from the mouth of the subject, to the gas passage., 'the respiratory gas introducing portion includes3. The airway adaptor according to claim 1 , whereinthe temperature sensor includes a heat sensitive portion which is configured to sense a temperature, and,when the temperature sensor is mounted on the airway case, the heat sensitive portion is disposed in at least one of the gas passage and the respiratory gas introducing portion.4. The airway adaptor according to claim 1 , whereinthe respiratory gas introducing portion includes a branch gas passage which is connectable to a pressure sensor portion for measuring a pressure generated by the respiratory gas.5. The airway adaptor according to claim 4 , whereinthe respiratory gas introducing portion is a nasal cannula which is configured to guide the respiratory gas expired from the nostrils of the subject, to the ...

Nasal Interface Device

A nasal interface device delivers a high flow rate of a gas having a pressure that is adjustable to a patient. The device includes a nasal insert that is adapted to deliver pressurized breathing gas to a nasal cavity of the patient, and to receive expired air. The nasal insert has a pressurized breathing gas delivery port and an expired gas port. The expired gas port has a plurality of openings extending therethrough. 1. A nasal interface device comprising: a breathing gas delivery port;', 'an expired gas port in fluid communication with the breathing gas delivery port, the expired gas port having a plurality of openings extending therethrough;', 'first and second nasal prongs in fluid communication with the breathing gas delivery port and the expired gas port; and', 'a sleeve slidably disposed over the plurality of openings such that the sleeve is slidable between a first position in which none of the plurality of openings are covered by the sleeve and a second position in which at least some of the plurality of openings are covered by the sleeve., 'a nasal insert adapted to deliver pressurized breathing gas to a nasal cavity of the patient, and to receive expired air, the nasal insert having2. (canceled)3. (canceled)4. The nasal interface device according claim 1 , wherein the expired gas port comprises a first expiratory tube extending at least partially along the first breathing gas supply tube and a second expiratory tube extending at least partially along the second breathing gas supply tube.5. The nasal interface device according to claim 1 , wherein the breathing gas delivery port comprises a breathing gas supply tube proximate to the first nasal prong and an expiratory tube proximate to the second nasal prong.6. The nasal interface device according claim 1 , wherein the breathing gas delivery port is located between the first and second nasal prongs.7. (canceled)8. The nasal interface device according to claim 1 , further comprising a valve inserted into ...

APPARATUS 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. 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. 1. A method for handling a sample of exhaled air in a device for diagnostic NO measurements , the device including a NO sensor , comprising:collecting a sample of exhaled air during an exhalation performed by a person at a controlled flow rate and pressure;feeding the collected sample to the NO sensor at a flow rate suitable for said sensor, the feeding performed for a duration longer than the duration of said exhalation; anddetermining an NO concentration in said sample.2. The method according to claim 1 , wherein NO-free air is fed to the person prior to the exhalation into the device.3. The method according to claim 1 , wherein NO-free air is fed to the person through an NO-scrubber included in the device claim 1 , prior to exhalation into the device.4. The method according to claim 1 , wherein audible or visual feedback is given to the person during an inhalation preceding the exhalation and during the exhalation claim 1 , in order to support valid NO concentration determination.5. The method according to claim 1 , wherein the exhalation flow rate is controlled to a value of about 20 to 800 ml/s.6. The method according to claim 1 , wherein said NO sensor is an electrochemical sensor.7. The method according to claim 1 , wherein the sample is fed to the sensor at a flow rate ...

PLETHYSMOGRAPH WITH ANIMAL RESTRAINT

A plethysmograph is described that includes a test chamber having an opening; a sealing member including an annular flexible seal to receive at least a part of the head of the test animal mounted across the opening whereby the animal breathes air outside the test chamber, while the animal's body is within the test chamber; and a restraining member attachable to the sealing member, the restraining member including a clamp positionable behind the test animal's head, to prevent the animal from withdrawing its head from the restraining member. The animal is positioned in the restraining member and the sealing member is attached to the restraining member before insertion of the animal and assembly into the test chamber, avoiding previous difficulties in simultaneously placing an animal into the chamber while inserting the animal's nose into the seal. The plethysmograph also eliminates the necessity for a plunger to prevent rearward movement of the animal. 1. A plethysmograph for transmitted test animal pulmonary data to a differential pressure transducer comprised of:a) a test chamber having an opening;b) a sealing member mountable across said opening, said sealing member including a barrier seal with an opening to receive the head of the test animal whereby the animal breathes air on one side of the seal, while the animals body is positioned on the other sale of the seal; andc) a restraining member attachable to one side of said sealing member, said restraining member including a clamp positionable behind the test animal's head, thereby preventing the animal from withdrawing its head from the restraining member, said animal being positioned in said restraining member and said sealing member being attached to said restraining member before mounting of said sealing member across said opening.2. The plethysmograph of claim 1 , wherein said test chamber is a thoracic chamber and said sealing member is mounted with the animal's body inside the chamber and the animal's head ...

DIGITAL INSPIROMETER SYSTEM

The present invention provides, in at least one embodiment, a system, device, and method for better instructions, feedback, and capture of inspirometer data. Inspirometers are typically not used correctly, so the device provides video, picture, and/or text instructions to users on how to use the inspirometer. Since many users do not inhale at the correct slow flow rate, the device has indicators telling the user whether his or her inhalation flow rate is too fast or too slow. Since many users do not use the inspirometer at all, the device captures electronic data including the total volume inhaled, flow rate data which indicates whether the user used the inspirometer correctly, and time stamps which indicate whether the users used the inspirometer regularly or at all. The device can also include spirometer features to capture exhaled breath data as well as inhaled breath data. 1. A system comprising:a digital inspirometer comprising an inlet configured to provide air inhaled by a patient, and a sensor configured to capture a plurality of measured variables from the air inhaled air; andan electronic display configured to display instructions to the patient, configured to display the plurality of measured variables, and configured store the plurality of measured variables in a database.2. The system of claim 1 , wherein the plurality of measured variables comprises a time claim 1 , a total volume claim 1 , and a flow rate.3. The system of claim 1 , wherein the database is coupled to the electronic display.4. The system of claim 1 , wherein the sensor comprises a bidirectional fan.5. The system of claim 1 , wherein the digital inspirometer further comprises a handle.6. A method comprising:providing instructions to a patient;providing air inhaled by a patient;capturing a plurality of measured variables from the air inhaled air;displaying the plurality of measured variables; andstoring the plurality of measured variables in a database.7. A device comprising:an input ...

SIMULTANEOUS DETECTION OF PATHOGENS CAPTURED RESPECTIVELY FROM INHALATION AND EXHALATION

A methodology of detecting pathogens captured respectively from the inhalation and the exhalation in human breathing is disclosed. More particularly, a method is described for simultaneously detecting pathogens captured on sensors placed respectively inside an inhalation channel and an exhalation channel of a nose respirator. 1. A methodology for detecting pathogens captured respectively in the inhalation air and the exhalation air of human breathing , having a step of:a. Capturing pathogens from inhaling air and exhaling air respectively on a capturing device;b. Allowing captured pathogens to react with a sensor; andc. Reporting outcome of the reaction.2. The method as claimed in claim 1 , wherein the inhalation air and the exhalation air flow through an inhaling channel and an exhaling channel respectively in a nose respirator capable of separating these two air flows in human breathing.3. The method as claimed in claim 1 , wherein the sensor is a material that can react with a pathogen and release a detectable signal.4. The method as claimed in claim 1 , wherein the reporting of the outcome of the reaction is achieved through a mechanism of converting the reaction signal into reflection of the presence or absence of a pathogen.5. The method as claimed in claim 3 , wherein the sensor is embedded within a pathogen-capturing device.6. The method as claimed in claim 4 , wherein the reporting of the pathogen-sensor reaction is achieved with a portable device.7. The method as claimed in claim 5 , wherein the sensor embedded within a pathogen-capturing device reacts with the pathogen's specific nucleic acid and emits a signal.8. The method as claimed in claim 7 , wherein the sensor-emitted signal includes luminance and fluorescence.9. The method as claimed in claim 6 , wherein the reporting of the pathogen-sensor reaction is achieved with a portable fluorescence reader.10. The method as claimed in claim 1 , wherein the pathogen capture claim 1 , the pathogen-sensor ...

METHODS AND DEVICES FOR COLLECTION OF EXHALED AEROSOLS

The present disclosure relates to methods and devices for the collection of exhaled aerosols. In some embodiments, the device disclosed herein comprises a cup and an attachable lid, wherein the cup has a conical base and the lid includes a pipette access port with a removable cap and a sealed buffer reservoir. In some embodiments, the method for a subject to collect exhaled aerosols disclosed herein comprises the steps of placing a collection cup against the subject's mouth, the subject coughing into the collection cup at least once, immediately closing the device by reattached a lid to the collection cup, placing the collection cup in a transport bag, and providing the transport bag to a processor. The processor can then incubate the transport bag containing the collection cup, add buffer to the collection cup to rinse and suspend any collected exhaled aerosols, and then extract the buffer containing the exhaled aerosols either for storage or for immediate amplification and sequencing for the detection of pathogens. 1. A device for the collection of exhaled aerosols comprising:a collection cup, wherein the exterior base of the collection cup is flat; anda lid, wherein the lid comprises a port that forms a channel through the lid and wherein the lid is configured to attach to the collection cup.2. The device of claim 1 , wherein the device is cylindrical.3. The device of claim 1 , wherein the interior base of the collection cup is conical claim 1 , wherein the interior base narrows as it approaches the base of the collection cup.4. The device of claim 1 , wherein the collection cup and lid are threaded to allow the lid to screw onto and unscrew from the rim of the collection cup.5. The device of claim 1 , wherein the port is circular and the channel is cylindrical.6. The device of claim 1 , wherein the port and the channel are hexagonal.7. The device of claim 1 , wherein the port and the channel are approximately 25 mm in diameter.8. The device of claim 1 , wherein ...

SAMPLE CELLS FOR RESPIRED GAS SAMPLING AND METHODS OF MANUFACTURING SAME

A sample cell () for a respired gas sensor has a single-piece injection molded main body () defining a gas flow path including an optical sampling bore (), a gas inlet lumen () connected with the inlet end () of the optical sampling bore, and a gas outlet lumen () connected with the outlet end () of the optical sampling bore. The gas flow path includes at least two curved walls (). The sample cell may be manufactured by assembling mold pins () for defining the gas flow path wherein at least two mold pins () have curved surfaces for defining the at least two curved walls of the gas flow path, and injection molding the single piece injection molded main body including removing the mold pins after defining the gas flow path including the at least two curved walls. 1. A sample cell for a respired gas sensor , the sample cell comprising:a single-piece injection molded main body defining a gas flow path including (i) an optical sampling bore with opposite inlet and outlet ends, (ii) a gas inlet lumen connected with the inlet end of the optical sampling bore, and (iii) a gas outlet lumen connected with the outlet end of the optical sampling bore;an inlet optical window attached to the single-piece injection molded main body and covering the inlet end of the optical sampling bore; andan outlet optical window attached to the single-piece injection molded main body and covering the outlet end of the optical sampling bore.2. The sample cell of wherein:the inlet optical window seals the inlet end of the optical sampling bore; and the outlet optical window seals the outlet end of the optical sampling bore.3. The sample cell of wherein:the optical sampling bore defines an optical axis,the inlet optical window is oriented transverse to the optical axis, andthe outlet optical window is oriented transverse to the optical axis.4. The sample cell of wherein:the gas inlet lumen and the gas outlet lumen are parallel,the gas inlet lumen is orthogonal to the optical axis, andthe gas ...

Unobtrusive health analysis

A method of estimating a ventilation rate in a room, the method comprising receiving a signal indicative of a concentration of at least one Volatile organic compound (VOC(t)) inside the room; processing the signal to detect at least one increase from an initial level (VOC(t0)) of the concentration of the at least one volatile organic compound; detect a corresponding maximum level of the concentration from the initial level; detecting when the concentration of the volatile organic compound returns towards the initial level or a steady state level (VOCss) from the corresponding maximum level; and determining the ventilation rate (k) based on the rate at which the concentration of the at least one Volatile organic compound returns towards the initial level or the steady state level from the corresponding maximum level.

IMAGING-BASED SPIROMETRY SYSTEMS AND METHODS

A spirometry system includes an imaging device configured to capture upper body movement images of a subject during inhalation and exhalation of the subject. The system further includes at least one controller configured to receive the captured images from the imaging device and, based upon the received images, determine at least one of an image-based spirometry flow-volume curve for the subject or an image-based spirometry parameter for the subject. 1. A spirometry system , comprising:an imaging device configured to capture images of a region of interest (ROI) in an upper body movement of a subject during inhalation and exhalation of a subject; and receive signals transmitted by the imaging device, the signals being representative of the captured images.', 'process the received images, and', (i) identifying feature points in the ROI:', '(ii) registering adjacent frames in the ROI;', '(iii) determining transformation parameters;', '(iv) calibrating the movement of the ROI; and', '(v) determining the position of the ROI in a selected frame due to respiration as a function of a vertical component of the feature points in each frame., 'determine an image-based flow-volume curve for the subject by], 'at least one controller in signal communication with the imaging device configured to2. The spirometry system of claim 1 , wherein step (i) comprises using a Harris corner detector to identify the feature points.3. The spirometry system of claim 1 , wherein step (ii) comprises applying affine transformation to adjacent frames in the received images.4. The spirometry system of claim 3 , wherein step (iii) comprises acquiring the transformation parameters from a vector produced by the affine transformation.5. The spirometry system of claim 1 , wherein step (iv) comprises calibrating the movement by determining a ratio of a length of an identified feature point to a number of pixels corresponding to the feature point.6. The spirometry system of claim 1 , wherein step (v) ...

Systems, Devices, and Methods for Performing Active Auscultation and Detecting Sonic Energy Measurements

Active auscultation may be used to determine organ (e.g., lung or heart) characteristics of users. An acoustic or piezo-electric signal (e.g., a pulse, a tone, and/or a broadband pulse) may be projected into an animal (typically human) body or thorax. The signal interacts with the body, or lungs, and in some cases may induce resonance within the body/lungs. A resultant signal may be emitted from the body which may be analyzed to determine, for example, a lung's resonant frequency or frequencies and/or how the sound is otherwise absorbed, reflected, or modified by the body. This information may be indicative of lung characteristics such as lung capacity, a volume of air trapped in the lungs, and/or the presence of COPD. 1. A method of performing active auscultation comprising:directing a broadband acoustic signal into user's body toward the user's lung, wherein the broadband acoustic signal is a pulse that comprises a plurality of frequencies;receiving an acoustic signal from the user's body, the received acoustic signal corresponding to the broadband acoustic signal;determining a characteristic of the received acoustic signal, wherein the characteristic is at least one of an intensity and a frequency of the received acoustic signal anddetermining a volume of air trapped in the user's lung responsively to the determined characteristic.2. The method of claim 1 , wherein the broadband acoustic signal is a first broadband acoustic signal and the received acoustic signal is a first received acoustic signal claim 1 , the method further comprising:receiving a second acoustic signal from the user's body, the received acoustic signal corresponding to a second broadband acoustic signal projected into the user's body;determining a characteristic of the second received acoustic signal, wherein the characteristic of the second received acoustic signal is at least one of an intensity and a frequency of the second received acoustic signal;comparing a characteristic of the first ...

SULFIDE GAS CONCENTRATION MEASURING DEVICE AND SULFIDE GAS CONCENTRATION MEASURING METHOD

A sulfide gas concentration measuring device comprises: an exhaled breath collection tool to be put to a subject to introduce exhaled breath of the subject into the exhaled breath collection tool; a pressure regulator comprising an inlet port connected to the exhaled breath collection tool; a sulfide gas sensor connected to an outlet port of the pressure regulator to measure a concentration of sulfide gas in the exhaled breath discharged from the outlet port; and a pressure measuring device. The pressure measuring device is configured to measure a pressure in the inlet port of the pressure regulator to make the subject aware of the measured pressure. 1. A sulfide gas concentration measuring device , comprising:an exhaled breath collection tool to be put to a subject to introduce exhaled breath of the subject thereinto;a pressure regulator comprising an inlet port receiving the exhaled breath from the exhaled breath collection tool;a sulfide gas sensor connected to an outlet port of the pressure regulator to measure a concentration of sulfide gas in the exhaled breath discharged from the outlet port; anda pressure measuring device configured to measure a pressure in the inlet port of the pressure regulator to make the subject aware of the measured pressure.2. The sulfide gas concentration measuring device according to claim 1 , wherein the pressure measuring device comprises a display unit claim 1 , and a display element visually indicating the measured pressure; and', 'a marking visually indicating a target pressure or a target pressure range., 'wherein the display unit comprises3. The sulfide gas concentration measuring device according to claim 1 , further comprising:an external outlet port open to an atmosphere;a pump; anda switch valve configured to connect an outlet port of the sulfide gas sensor to a selected one of the external outlet port and the pump, the exhaled breath being discharged from the outlet port of the sulfide gas sensor.4. The sulfide gas ...

WEARABLE MONITORING DEVICES WITH PASSIVE AND ACTIVE FILTERING

A wearable device includes a housing with a window and an electronic module supported by the housing. The electronic module includes a photoplethysmography sensor, a motion sensor, and a signal processor that processes signals from the motion sensor and signals from the photoplethysmography sensor. The signal processor is configured to remove frequency bands from the photoplethysmography sensor signals that are outside of a range of interest using a band-pass filter to produce pre-conditioned signals, and to further process the pre-conditioned signals using the motion sensor signals to reduce motion artifacts from footsteps during subject running. The device includes non-air light transmissive material in optical communication with the photoplethysmography sensor and the window that serves as a light guide for the photoplethysmography sensor. The window optically exposes the photoplethysmography sensor to a body of a subject wearing the device via the non-air light transmissive material. 1. An ear-worn device , comprising:a housing comprising at least one window;an electronic module supported by the housing, the electronic module comprising at least one photoplethysmography (PPG) sensor, at least one motion sensor, and at least one signal processor configured to process signals from the at least one motion sensor and signals from the at least one PPG sensor, wherein the at least one signal processor is configured to remove frequency bands from the signals from the at least one PPG sensor that are outside of a range of interest using at least one band-pass filter to produce pre-conditioned signals, and to further process the pre-conditioned signals using the signals from the at least one motion sensor to reduce motion artifacts from footsteps during subject running; andnon-air light transmissive material in optical communication with the at least one PPG sensor and the window that serves as a light guide for the at least one PPG sensor, wherein the at least one ...

DEVICE AND METHOD FOR NON-INVASIVE ANALYSIS OF PARTICLES DURING MEDICAL VENTILATION

A diagnostic device is disclosed for characterisation of particles from a patient's airways, such as a lung, when ventilated by a ventilator, and/or for control thereof, comprising a particle detecting unit configured to be connected to a conduit for passing expiration fluid from said patient, for obtaining data related to particles being exhaled from said patient's airways. 1. A diagnostic device for characterization of particles from a patient's airways , when ventilated by a ventilator , and/or for controlling said ventilator , comprising:a particle detecting unit configured to be connected to a conduit for passing expiration fluid from said patient, said particle detecting unit is configured for obtaining particle data related to particles exhaled from said patient's airways; anda control unit configured for analyzing said particle data to diagnose and/or monitor a condition of said patients airways.2. The diagnostic device of claim 1 , wherein said particle detecting unit is a particle counter or sizer.3. The diagnostic device of claim 1 , wherein said particles are aerosols derived from said patient's airways.4. The diagnostic device of claim 1 , wherein said conduit is an expiration conduit downstream a Y-connector connectable to said patient.5. The diagnostic device of claim 1 , wherein said conduit is a side-stream conduit connected to an expiration conduit downstream a Y connector connectable to said patient.6. The diagnostic device of claim 1 , wherein said particle detecting unit is configured to be connected to both an expiration conduit and an inspiration conduit.7. The diagnostic device of claim 1 , wherein said control unit is configured to adjust said ventilator to provide a mechanical ventilation mode based on said data related to particles being exhaled from said patient's airways.8. The diagnostic device of claim 1 , wherein said control unit is configured to control said ventilator due to a characteristic of said particles.9. A diagnostic system ...

SYSTEMS AND METHODS FOR DETECTING MEDICAL TREATMENT

Systems and methods are provided for using stored physiologic information about a subject to detect a previous treatment event. Physiologic information can be sensed from a subject using one or more sensors. Using a detection circuit, a change in the sensed physiologic information, such as a change from reference physiologic information, can be used to identify a candidate previous treatment event. An alert or other information about the candidate treatment event can be provided to a patient or clinician. In an example, a candidate treatment event can include a heart failure or diuresis treatment that is identified using information about a change in one or more of a subject's circadian pattern, a subject's thoracic impedance, or a subject's respiration status. 1. A system for detecting a previous or ongoing treatment of a subject , the system comprising:a first physiologic sensor configured to sense a physiologic signal from the subject; and a memory circuit configured to store information about the physiologic signal from the first physiologic sensor; and', 'a processor circuit configured to identify a candidate previous treatment event for the subject using the information about the physiologic signal stored in the memory circuit., 'a previous treatment detection circuit, the treatment detection circuit including2. The system of claim 1 , wherein the previous treatment detection circuit includes a heart failure (HF) hospitalization treatment detection circuit claim 1 , and wherein the processor circuit is configured to identify a candidate previous HF hospitalization treatment event for the subject using the information about the physiologic signal stored in the memory circuit.3. The system of claim 1 , wherein the previous treatment detection circuit includes a diuresis treatment detection circuit claim 1 , and wherein the processor circuit is configured to identify a candidate previous diuresis treatment event for the subject using the information about the ...

Patient Reminder System and Method for Incentive Spirometer Utilization

A system and method for configuring and/or utilizing an incentive spirometer to interact with a user during a series of sessions, the incentive spirometer having a piston that is movable within a chamber by user inhalation. A sensor is mounted to detect movement of the piston, a perceptible prompt to a user is generated to encourage use of the incentive spirometer at preselected intervals, and the perceptible prompt is deactivated only after the sensor detects that the piston has at least reached a preselected threshold. 1. A method for configuring an incentive spirometer to interact with a user during a series of sessions , comprising:selecting an incentive spirometer having a housing defining a chamber and a piston that is movable within the chamber by user inhalation;mounting a sensor to detect movement of the piston;generating a perceptible prompt to a user to encourage use of the incentive spirometer at preselected intervals relative to the series of sessions; anddeactivating the perceptible prompt only after the sensor detects that the piston has at least reached a preselected threshold.2. The method of wherein the perceptible prompt includes at least one of an audible sound claim 1 , a visual prompt claim 1 , and a vibratory tactile prompt.3. The method of wherein generating the perceptible prompt includes activating a prompt on a remote device.4. The method of wherein the remote device is a mobile device capable of being carried by the user.5. The method of further including storing detected piston movement in a storage medium as retrievable data.6. The method of wherein the sensor is removably mounted to the incentive spirometer.7. The method of wherein the sensor is integrated into a removable clamp.8. The method of wherein the perceptible prompt is deactivated only after the user breathes with sufficient inspiratory target volume using the incentive spirometer.9. The method of further including placing an opaque housing over at least a portion of the ...

Systems, Devices And Methods For Rendering Key Respiratory Measurements Accessible To Mobile Digital Devices

System and methods for rendering key respiratory measurements accessible to hand-held mobile electronic devices with acoustic input capabilities. A whistle having a pre-determined correlation (between through-flowing airflow per unit time and frequency of acoustic emissions from the whistle) may generate or transmit information or signals. A processor in the mobile electronic device may receive the information or signals, determine a baseline acoustic context, and/or record samples. The processor may determine a frequency value for an acoustic signal (based on the recorded samples), determine an expiratory airflow rate value (based on the frequency value), and determine a respiratory parameter (based on the expiratory airflow rate value). The processor may also determine whether the acoustic signal corresponds to a whistle signal that is generated by a user performing a forceful exhalation through the whistle. The processor may generate and render spirometric information. 1. A system comprising:a whistle having a pre-determined correlation between through-flowing airflow per unit time and frequency of acoustic emissions from the whistle; anda mobile electronic device comprising a memory, a microphone, an electronic display, and a processor coupled to the memory, the microphone, and the electronic display, determining a baseline acoustic context;', 'recording samples via the memory based on information received via the microphone;', 'determining a frequency value for an acoustic signal included in the recorded samples;', 'determining an expiratory airflow rate value based on the determined frequency value;', 'determining a respiratory parameter based on the determined expiratory airflow rate value;', the recorded samples,', 'the determined frequency value,', 'the determined expiratory airflow rate value, and', 'the determined respiratory parameter; and, 'generating spirometric information based on one or more of, 'rendering the generated spirometric information., ' ...

Digital Stethoscopes, and Auscultation and Imaging Systems

Described embodiments include a system (), including a garment (), configured to cover at least a portion of a body of a subject, one or more sound transmitters () coupled to the garment, configured to transmit sound () through the body of the subject, and a plurality of sound detectors () coupled to the garment. The sound detectors are configured to detect the transmitted sound following passage of the transmitted sound through the body of the subject, to detect body sound () emanating from the body of the subject, and to generate a plurality of sound-detector outputs in response to detecting the transmitted sound and the body sound. The system further includes a processor (), configured to process the sound-detector outputs, and to generate a processor output in response thereto. Other embodiments are also described. 1. A system , comprising:a garment, configured to cover at least a portion of a body of a subject;one or more sound transmitters coupled to the garment, configured to transmit sound through the body of the subject; to detect the transmitted sound following passage of the transmitted sound through the body of the subject,', 'to detect body sound emanating from the body of the subject, and', 'to generate a plurality of sound-detector outputs in response to detecting the transmitted sound and the body sound; and, 'a plurality of sound detectors coupled to the garment, configureda processor, configured to process the sound-detector outputs, and to generate a processor output in response thereto.2. The system according to claim 1 , a back portion, configured to cover a back of the subject; and', 'one or more bands extending from the back portion, configured to cover a chest of the subject, and, 'wherein the garment compriseswherein the sound transmitters are coupled to the bands, and at least some of the sound detectors are coupled to the back portion.3. The system according to claim 1 , wherein at least some of the sound detectors are arranged in a two- ...

METHOD AND SYSTEM FOR RESPIRATORY MONITORING DURING CT-GUIDED INTERVENTIONAL PROCEDURES

A method and system for respiratory monitoring and indicating intervention tool advancement timing during an intervention procedure. Features include monitoring the respiration of a subject using a respiration monitor, wherein the respiration monitor produces a respiratory signal indicative of a plurality of respiratory states of the subject, scanning the subject using an imaging device and generating a first imaging data set, wherein the imaging data set is associated with a respiratory state of the subject, and indicating when to advance an intervention tool based on the respiratory signal using an advancement indicator, such that advancement of the intervention tool occurs during the respiratory state of the subject, and where the subject need not hold his breath. 1. A respiratory monitoring method for indicating intervention tool advancement timing during an intervention procedure while respiration of a subject is continuous , the method comprising:monitoring respiration of the subject using a respiration monitor, wherein the respiration monitor produces a respiratory signal indicative of a plurality of respiratory states of the subject;generating a first imaging data set from a scan of the subject with an imaging device, wherein the first imaging data set is associated with a first respiratory state of the subject; andindicating when to advance an intervention tool based on the respiratory signal using an advancement indicator.2. The method of claim 1 , wherein indicating when to advance the intervention tool occurs during the first respiratory state of the subject.3. The method of claim 1 , wherein indicating when to advance the intervention tool occurs prior to the first respiratory state of the subject.4. The method of claim 3 , wherein indicating when to advance the intervention tool occurs at a predetermined time prior to the first respiratory state of the subject.5. The method of claim 4 , further comprising:determining when the first respiratory state of ...

CAPNOGRAPHY TUBE FITTING

A capnography fitting is provided. The capnography fitting comprises a tube having a proximal end inlet and a distal end outlet. The tube has an angled port in fluid communication with and disposed adjacent to the distal end outlet. Methods and kits are also provided. 1. A capnography fitting comprising a tube having a proximal end inlet and a distal end outlet , the tube having an angled port in fluid communication with and disposed adjacent to the proximal end inlet or the distal end outlet.2. The fitting of claim 1 , wherein the angled port has a diameter smaller than a diameter of the proximal end inlet and the distal end outlet of the tube.3. The fitting of claim 1 , wherein the angled port is disposed at an acute angle relative to a surface of the proximal end inlet of the tube.4. The fitting of claim 5 , wherein the angled port has an inner surface and the tube has an inner surface configured to receive a sampling tube.5. The fitting of claim 4 , wherein the sampling tube is flexible and extends out from the distal end outlet of the tube.6. The fitting of claim 4 , wherein the inner surface of the angled port has threading disposed thereon.7. The fitting of claim 1 , wherein the proximal end inlet of the tube is configured to receive an inhalation gas.8. The fitting of claim 7 , wherein the proximal end inlet is configured to engage a first end of a mixed gas fitting.9. The fitting of claim 8 , wherein a second end of the mixed gas fitting is configured to engage with a gas delivery hose.10. The fitting of claim 1 , wherein the distal end outlet is configured to couple with an inlet of an inhalation mask.11. The fitting of claim 10 , wherein an inner surface of the angled port is configured to slidably receive at least a portion of a sampling tube claim 10 , which is configured to extend from the distal end outlet into the inlet of the inhalation mask.12. The fitting of claim 11 , wherein the angled port is configured to couple with a luer fitting and an ...

SYSTEM AND METHOD FOR CLOSED-LOOP ACTIVE SENSING AND PROTECTION AGAINST AIRBORNE PATHOGENS

A mask apparatus that is configured to prevent airborne pathogens from reaching an individual by actively mitigating airborne droplets that have a pathogen. In one example, the mask apparatus comprises a sensor device, a mitigator device, and a controller. The sensor device comprises an aerosol detector that is configured to perform a light measurement of an airborne aerosol droplet in an area proximate to the wearable apparatus. The mitigator device is configured to initiate a mitigation action directed at the airborne aerosol droplet. The controller is data communication with the sensor device and the mitigator device. The controller is configured to determine that the airborne aerosol droplet has a pathogen based at least in part on the light measurement captured by the sensor device and cause the mitigator device to initiate the mitigation action based on the airborne aerosol droplet having the pathogen. 1. A wearable apparatus for an individual , comprising:a sensor device that comprises an aerosol detector that is configured to perform a light measurement of an airborne aerosol droplet in an area proximate to the wearable apparatus;a mitigator device that is configured to initiate a mitigation action directed at the airborne aerosol droplet; determine that the airborne aerosol droplet has a pathogen based at least in part on the light measurement captured by the sensor device; and', 'cause the mitigator device to initiate the mitigation action based at least in part on the determination of the airborne aerosol droplet having the pathogen., 'a controller that is data communication with the sensor device and the mitigator device, wherein the controller is configured to at least2. The apparatus of claim 1 , wherein the aerosol detector comprises a laser-inducted fluorescence detector (LIDAR).3. The apparatus of claim 1 , wherein determining that the airborne aerosol droplet has the pathogen is further based at least in part on a temperature measurement received ...

SIDE-STREAM VOLUMETRIC CAPNOGRAPHY

Techniques for determining a volume of exhaled COas a function of time using side-stream capnography, including obtaining flow dynamics measurements of a subject from a flow sensor; obtaining COconcentration measurements of the subject from a side-stream COmonitor; determining a duration of time (ΔT) for a sample of gas to flow from a reference point to the side-stream COmonitor; synchronizing in time the COconcentration measurement with the flow dynamics measurement, based on the determined ΔT; and determining a volume of COexhaled as a function of time, based on the flow dynamics measurement and the synchronized COconcentration measurement. 1. A method for determining a volume of exhaled COas a function of time using side-stream capnography , the method comprising:obtaining flow dynamics measurements of a subject from a flow sensor;{'sub': 2', '2, 'obtaining COconcentration measurements of a subject from a side-stream COmonitor;'}{'sub': s1', '2', 's1', '2', '2', 'i, 'determining a duration of time (ΔT) for a sample of gas to flow from a reference point to the side-stream COmonitor, wherein determining the ΔTis performed based on a time until a notch in the COconcentration measurement, resulting from a bolus of clean air or a bolus of air having a known COconcentration provided at on-start of inhalation (T);'}{'sub': 2', 's1, 'synchronizing in time the COconcentration measurement with the flow dynamics measurement, based on the determined ΔT; and'}{'sub': 2', '2, 'determining a volume of COexhaled as a function of time, based on the flow dynamics measurement and the synchronized COconcentration measurement.'}2. The method of claim 1 , wherein the ΔTis derived from the flow dynamics measurements.3. The method of claim 1 , wherein determining of the ΔTcomprises determining a time until a notch in the COconcentration measurements claim 1 , resulting from the bolus of clean air claim 1 , is observed; wherein Tis determined based on the flow dynamics measurements.4. ...

METHODS AND SYSTEMS FOR DETERMINING COLLATERAL VENTILATION

Methods and systems for determining collateral ventilation are disclosed. Methods may comprise introducing a diagnostic catheter into a lung compartment via an assisted ventilation device, inflating the occluding member to isolate the lung compartment, and performing a diagnostic procedure with the catheter while the patient is ventilated via the assisted ventilation device. The diagnostic procedure comprises determining an exhaled volume from the isolated lung compartment over a predetermined period of time while the patient is ventilated via the assisted ventilation device. The presence collateral ventilation may be determined based on the exhaled volume from the isolated lung compartment over the predetermined period of time. 1. A method of determining collateral ventilation in a patient , the method comprising:introducing a diagnostic catheter into a lung compartment via an assisted ventilation device, wherein the diagnostic catheter comprises a distal end comprising an occluding member and a proximal end configured to be attached to a console;inflating the occluding member to isolate the lung compartment; andperforming a diagnostic procedure with the catheter while the patient is ventilated via the assisted ventilation device, wherein data generated from the diagnostic procedure are displayed on the console;wherein the diagnostic procedure comprises determining an exhaled volume from the isolated lung compartment over a predetermined period of time while the patient is ventilated via the assisted ventilation device and determining whether collateral ventilation is present in the isolated lung compartment based on the exhaled volume from the isolated lung compartment over the predetermined period of time.2. The method of claim 1 , wherein determining whether collateral ventilation is present in the isolated lung compartment comprises determining that no collateral ventilation is present if the exhaled volume from the isolated lung compartment over the ...

Methods for generating and delivering droplets to the pulmonary system using a droplet delivery device

A droplet delivery device and related methods for delivering precise and repeatable dosages to a subject for pulmonary use is disclosed. The droplet delivery device includes a housing, a reservoir, and ejector mechanism, and at least one differential pressure sensor. The droplet delivery device is automatically breath actuated by the user when the differential pressure sensor senses a predetermined pressure change within housing. The droplet delivery device is then actuated to generate a stream of droplets having an average ejected droplet diameter within the respirable size range, e.g, less than about 5 μm, so as to target the pulmonary system of the user.

On-Airway Pulmonary Function Tester

A compact, on-airway, respiratory gas analyzer for performing pulmonary function tests incorporates an IR spectroscopy light guide having a curved, rather than linear, sample chamber that lies transverse to a direction of respiratory gas flow. Cooperating with the sample chamber is an impact plate that functions to steer respiratory and test gases impinging on the impact plate into the curved sample chamber. A source of IR energy is at one end of the sample chamber and an electro-optical sensor responsive to IR energy is disposed at an opposite end of the chamber. The respiratory gas analyzer also includes gas flow paths and valving for carrying out lung capacity and lung diffusion tests.

Gas sampling device and method

The invention relates to a gas sampling device ( 100 ) for collecting gas samples from a patient or other gas sources such as industrial processes. The gas sampling device has a flow controller ( 114 ) and a flow sensor ( 112 ) for controlling a gasflow from the gas source created by a gas pump ( 113 ). The gas flow is pulled through an associated absorbent tube ( 180 ) located up-stream relative to the flow sensor and pump.

APPARATUS FOR DETERMINING RESPIRATORY CONDITION

An apparatus for determining a respiratory condition, includes: a signal acquiring section which is configured to acquire a signal corresponding to a respiratory flow of a subject; a first index producing section which is configured to produce a first index related to the respiratory flow of the subject obtained from the signal; a second index producing section which is configured to produce a second index related to a respiratory demand of the subject predicted from the first index; a third index producing section which is configured to produce a third index related to a respiratory effort of the subject based on the first index and the second index; and an outputting section which is configured to output the third index. 1. An apparatus for determining a respiratory condition , the apparatus comprising:a signal acquiring section which is configured to acquire a signal corresponding to a respiratory flow of a subject;a first index producing section which is configured to produce a first index related to the respiratory flow of the subject obtained from the signal;a second index producing section which is configured to produce a second index related to a respiratory demand of the subject predicted from the first index;a third index producing section which is configured to produce a third index related to a respiratory effort of the subject based on the first index and the second index; andan outputting section which is configured to output the third index.2. The apparatus according to claim 1 , whereinthe first index is a signal waveform corresponding to the respiratory flow of the subject, andthe second index is a sinusoidal waveform, which is approximated so as to include: a first portion including a starting point of inspiration of the subject in the signal waveform; and a second portion indicating an ending point of inspiration of the subject, based on: a gradient of the first portion; and the second portion.3. The apparatus according to claim 2 , whereinthe ...

Image Analysis Apparatus, Method, and Program

The region extraction unit extracts lung regions from three-dimensional images of a plurality of time phases, the alignment unit aligns pixel position in the lung region extracted from each three-dimensional image between the three-dimensional images. This calculates a displacement vector field at each time phase of the three-dimensional images. The function generation unit calculates a local ventilation volume function representing a temporal change in ventilation volume at each point in the displacement vector field, and the quantification unit calculates a difference function, which is a function of difference values between the local ventilation volume function and benchmark ventilation volume function, as a quantitative value representing a difference between the local ventilation volume function and the benchmark ventilation volume function. The display control unit displays lung VR images on which the difference function is mapped on the display in time series order. 1. An image analysis apparatus that analyzes , based on a series of three-dimensional images of lungs at different time phases , a three-dimensional distribution of ventilation volume of the lungs , the apparatus comprising:a lung region extraction unit that extracts a lung region from each of the three-dimensional images;an alignment unit that aligns the lung regions between the series of three-dimensional images and calculates a displacement vector field in the lung region;a function calculation unit that calculates a local ventilation volume function representing a temporal change in ventilation volume at each point in the displacement vector field in each of the three-dimensional images based on the displacement vector field; anda quantification unit that quantifies a difference between the local ventilation volume function and a benchmark ventilation volume function serving as a reference and calculates a quantitative value representing the difference.2. The image analysis apparatus as ...

DETERMINING AND ENHANCING PRODUCTIVITY

Techniques and technologies for determining and enhancing productivity are described. In at least some embodiments, a system for includes a processing component operatively coupled to a memory; a productivity analyzer at least partially disposed in the memory, the productivity analyzer including one or more instructions that when executed by the processing component perform operations including: receive productivity data associated with usage of one or more productivity tools by at least one user during a time period; receive biometric data associated with one or more biometric aspects of the at least one user during the time period; analyze one or more aspects of the productivity data and the biometric data; and determine based on the analysis at least one productivity-related operation intended to enhance at least one productivity metric of the at least one user. 1. A system , comprising:a processing component operatively coupled to a memory; receive productivity data associated with usage of one or more productivity tools by at least one user during a time period;', 'receive biometric data associated with one or more biometric aspects of the at least one user during the time period;', 'analyze one or more aspects of the productivity data and the biometric data; and', 'determine based on the analysis at least one productivity-related operation intended to enhance at least one productivity metric of the at least one user., 'a productivity analyzer at least partially disposed in the memory, the productivity analyzer including one or more instructions that when executed by the processing component perform operations including2. The system of claim 1 , wherein the productivity analyzer configured to receive productivity data associated with usage of one or more productivity tools by at least one user during a time period comprises:a productivity analyzer configured to receive electronic messaging data associated with usage of an electronic messaging application by at ...

FLUID RESPONSIVENESS DETECTION DEVICE AND METHOD

A liquid reactivity detection device and method. The liquid reactivity detection device includes: a breathing signal acquisition module, a hemodynamic signal acquisition module and a liquid reactivity detection module. The breathing signal acquisition module and the hemodynamic signal acquisition module work in cases where the subject is in any one of the following breathing modes: a spontaneous breathing mode, a spontaneous breathing combined with mechanical ventilation mode, and a mechanical ventilation mode. The hemodynamic signal acquisition module is configured to acquire at least one hemodynamic signal of the subject. The breathing signal acquisition module is configured to acquire at least one breathing signal of the subject. The liquid reactivity detection module is configured to determine the liquid reactivity of the subject according to the breathing signal and the hemodynamic signal. 1. A fluid responsiveness detection device , comprising: a breathing signal acquisition module , a hemodynamic signal acquisition module and a fluid responsiveness detection module , wherein the breathing signal acquisition module and the hemodynamic signal acquisition module operate under a breathing mode of a subject being any one of: a spontaneous breathing mode , a spontaneous breathing and machine-controlled breathing mode , or a machine-controlled breathing mode;the hemodynamic signal acquisition module is configured to acquire at least one hemodynamic signal of the subject;the breathing signal acquisition module is configured to obtain at least one breathing signal of the subject, the breathing signal comprising a respiratory cycle; andthe fluid responsiveness detection module is configured to determine the fluid responsiveness of the subject based on the breathing signal and the hemodynamic signal,wherein the fluid responsiveness detection module is further configured to determine a respiratory variation and a hemodynamic variation of the subject based on the ...

SYSTEM AND METHOD OF MONITORING RESPIRATORY PARAMETERS

A spirometer includes a housing, a mouthpiece coupled to the housing, and a measurement unit. The measurement unit is configured to receive air expelled by a user, and generate an electrical quantity corresponding to a peak expiratory flow or a forced expiratory volume based on the expelled air. The spirometer also includes a processing module supported by the housing, and configured to receive the electrical quantity from the measurement unit, a display coupled to the measurement unit to display an indication of the peak expiratory flow or the forced expiratory volume, and an energy harvester. The energy harvester is coupled to the measurement unit and the processing module, and is configured to receive energy from one of a group consisting of the measurement unit and an energy sensor, store the received energy in an energy storage device, and transfer the energy to the processing module. 1. A spirometer comprising:a housing;a mouthpiece coupled to the housing;a measurement unit configured to receive air expelled by a user, and generate an electrical quantity corresponding to a peak expiratory flow or a forced expiratory volume based on the expelled air;a processing module supported by the housing, and configured to receive the electrical quantity from the measurement unit; and receive energy from one of a group consisting of the measurement unit and an energy device,', 'store the received energy in an energy storage device, and', 'transfer the energy to the processing module., 'an energy harvester coupled to the measurement unit and the processing module, the energy harvester configured to'}2. The spirometer of claim 1 , wherein the housing includes a set of guiderails along a length of the housing claim 1 , and wherein the mouthpiece is movable relative to the housing between a first position in which the mouthpiece is recessed within the housing claim 1 , and a second position in which the mouthpiece is exposed outside the housing.3. The spirometer of claim 2 , ...

APPARATUS AND METHOD FOR DETERMINING A RESPIRATION VOLUME SIGNAL FROM IMAGE DATA

The present invention relates to apparatus () for determining a respiration volume signal from a subject (), comprising a processing unit () for receiving image data () detected from a field of view () and for determining an alternating signal (S)including vital sign information (R) of the subject () from the image data (), an analysis unit () for determining at least one characteristic parameter (A) corresponding to a respiration parameter of the subject () on the basis of the alternating signal (S), a calibration unit () for determining a calibration value (V V) on the basis of a breathing volume measured during inhale and/or exhale of the subject () by means of an airflow or an air volume measurement, and a calculation unit () for calculating the respiration volume of the subject () on the basis of the calibration value (V V) and the at least one characteristic parameter (A). 1. An apparatus for determining a respiration volume signal from a subject , comprising:a processing unit for receiving image data detected from a field of view and for determining a plurality of alternating signals including vital sign information of the subject from different areas of the filed of view from the image data,an analysis unit for determining at least one characteristic parameter corresponding to a respiration parameter of the subject on the basis of the plurality of alternating signals,a calibration unit for determining a calibration value on the basis of a breathing volume measured during inhale and/or exhale of the subject by means of an airflow or an air volume measurement, anda calculation unit for calculating the respiration volume of the subject on the basis of the calibration value and the at least one characteristic parameter wherein the plurality of alternating signals are weighted by a weight factor.2. The apparatus as claimed in claim 1 , wherein the processing unit is connected to an image detection unit for providing the image data from the field of view.3. The ...

VENTILATION MASK

A nasal ventilation mask having one or more attachment ports located adjacent to and overlying an upper lip of a patient when worn. 1. A nasal mask having one or more attachment ports for supporting a functional accessory , sealable by at least one self-closing valve , a septum , a frangible membrane , a plug or a cap , adapted to be located adjacent to and overlying a region of an upper lip of a patient when worn.2. The mask of claim 1 , wherein the at least one self-closing valve comprises a duck valve.3. The mask of claim 1 , wherein the functional accessory comprises (a) a sensor adapted to monitor one or more of the following parameters: COconcentration claim 1 , Oconcentration claim 1 , N concentration claim 1 , anesthesia gas concentration claim 1 , pressure claim 1 , relative humidity claim 1 , temperature and gas flow rate claim 1 , and/or (b) an end-tidal COadaptor for monitoring end-tidal COfrom a nose and/or mouth of a wearer claim 1 , and/or (c) a COscavenger claim 1 , a gas collector or exhalation scoop claim 1 , and/or (d) a nasal cannula claim 1 , and/or (e) suction tubing claim 1 , and/or (f) an oral mask adapted to accommodate a functional device claim 1 , and/or a laryngoscope claim 1 , a video laryngoscope claim 1 , an endotrachael tube claim 1 , a fiber optic bronchoscope claim 1 , a rigid bronchoscope claim 1 , a gastroenterology scope claim 1 , and/or an exhalation scoop or exhaled breath scavenger mounted adjacent a lower portion of the mask positioned to overly a region of an upper lip of a patient when the mask is worn claim 1 , wherein the exhalation scoop is attached to the nasal mask through the attachment ports that optionally permit exhaled breath captured by the exhalation scoop to be diverted into the nasal mask.4. The mask of claim 3 , wherein the exhalation scoop or exhaled breath scavenger is integral to the mask claim 3 , or fixed to the mask by mechanical or adhesive attachments or brackets.5. The mask of claim 1 , wherein the ...

VENTILATION MASK

Disclosed is a nasal ventilation mask having separate ports to monitor end-tidal COexpulsion integrated into the mask in order to monitor end-tidal COexpelled nasally or orally. Also disclosed is a CPR mask for nose-to-mouth and/or mouth-to-mouth resuscitation, having a body shaped to cover the nose and/or mouth of a victim, said mask including a COabsorber for eliminating at least in part rescuer's exhaled COdelivered to the victim. 1. A nasal ventilation mask having an integrated end-tidal COmonitor for monitoring end-tidal COexpelled nasally and/or orally by a patient.2. The mask of claim 1 , wherein the mask is adapted for use as an oxygen transport mask claim 1 , or as a ventilation mask providing Oand anesthesia gases claim 1 , and said end-tidal COmonitor is adapted for monitoring end-tidal COsimultaneously or sequentially.3. The mask of claim 1 , wherein said mask is adapted for CPAP pre-operatively claim 1 , intra-operatively claim 1 , and/or post-operatively.4. The mask of claim 1 , wherein said mask is adapted for connection to a resuscitator bag such that a patient's mouth and airway are not obstructed by the resuscitator bag claim 1 , whereby to allow for direct laryngoscopy and intubation.5. The mask of claim 1 , said mask having an Oport for introducing oxygen into the mask claim 1 , and a ventilation port and a gas monitoring attachment integral to or attached to the ventilation port.6. The mask of claim 1 , further comprising an anesthesiologist controlled 2-way claim 1 , 3 port valve permitting an anesthesiologist to switch between separately monitoring nasal and oral end-tidal CO claim 1 , or simultaneously monitoring nasal and oral end-tidal CO claim 1 , wherein when oral end-tidal COmonitoring is chosen claim 1 , ventilation gases expelled orally by the patient are also monitored.7. The mask of claim 1 , having an exterior opening under a nose region of the mask claim 1 , adapted to overlie a patient's lip region claim 1 , wherein said opening ...

Mobile Device

Mobile device () is disclosed. The present techniques relate to a mobile device or portable electronic device, particularly a device including a breath sampling device. The mobile electronic device () comprises a collection device () for collecting and storing a gas sample. The collection device () is accessible to enable analysis of the gas stored in the collection device (). The collection device () comprises a mouthpiece () into which a user exhales. The collection device () further comprises a plurality of sorbent tubes () to collect and store the breath sample(s). Each tube () has a one-way valve () to prevent captured breath escaping. 1. A mobile electronic device comprising a collection device for collecting and storing a gas sample , wherein the collection device is accessible to enable analysis of the gas stored in the collection device , wherein the mobile electronic device is one or more of a mobile phone , a smart phone and a tablet.2. The mobile device of claim 1 , wherein the collection device is detachable from the mobile device.3. The mobile device of claim 1 , wherein the collection device is housed within the mobile electronic device.4. The mobile device of claim 1 , wherein the collection device is configured to store multiple gas samples.5. The mobile device of claim 1 , further comprising at least one sensor for collecting information simultaneously with the collection device.6. The mobile device of claim 1 , further comprising a processor configured to initiate collection of the gas sample in response to an input.7. The mobile device of claim 6 , wherein the input is a user input.8. The mobile device of claim 6 , wherein the processor is further configured to:determine whether the collected gas sample satisfies at least one collection criteria andif so, stop the collection andstore the collected gas sample.9. The mobile device of claim 6 , wherein the processor is further configured to determine whether a plurality of gas samples are to be ...

PORTABLE SPIROMETER

The present invention relates to a portable spirometer, comprising a housing and a mouthpiece being releasably connected to said housing, wherein the housing encloses a sensor unit being in fluid communication with a flow channel receiving part of a flow of exhaled or inhaled air from a main flow channel of the mouthpiece when connected to said housing, whereby the sensor unit is configured to measure one or more characteristics of part of the flow of exhaled or inhaled air passed to the sensor unit via the mouthpiece, characterised in that said sensor unit comprises at least one digital differential pressure sensor comprising a heating element and a temperature sensor arranged upstream of the heating element and a reference temperature sensor arranged downstream of the heating element. 1. A portable spirometer , comprising a housing and a mouthpiece being releasably connected to said housing , wherein the housing encloses a sensor unit being in fluid communication with a flow channel receiving part of a flow of exhaled or inhaled air from a main flow channel of the mouthpiece when connected to said housing , whereby the sensor unit is configured to measure one or more characteristics of part of the flow of exhaled or inhaled air passed to the sensor unit via the mouthpiece , characterised in that said sensor unit comprises at least one digital differential pressure sensor comprising:a heating element,a temperature sensor arranged upstream of the heating element, anda reference temperature sensor arranged downstream of the heating element.2. The portable spirometer according to claim 1 , wherein the at least one digital differential pressure sensor is configured to measure thermal flow of the air and to convert the measured thermal flow to a value representing air flow.3. The portable spirometer according to claim 1 , wherein the at least one digital differential pressure sensor is configured to measure a first temperature and a second temperature which are ...

Method and System to Amplify and Measure Breath Analytes

A method of avoiding a contaminant which would skew an analyte result in a breath analysis method and of calibrating subject of the breath analysis includes, immediately before the breath analysis method or the collection of breath for the breath analysis method, administering to the subject a predetermined gas composition. A system for analyzing an analyte in breath of a subject while avoiding a local contaminant which would skew an analyte result and calibrating the subject of so that the result of the analyte analysis will be the same regardless of where the test is performed geographically, includes a source of a predetermined gas composition immediately before the breath analysis method or the collection of gas for the breath analysis method, administering to the subject a predetermined gas mixture. 1. A method of avoiding a contaminant which would skew an analyte result in a breath analysis method and of calibrating subject of the breath analysis comprising , immediately before a breath analysis method or collection of breath for a breath analysis method , administering to the subject a predetermined purified and standardized gas composition , the predetermined gas composition being free of a contaminant which would skew an analyte result in a breath analysis method , so that the result of the analyte analysis will be the same regardless of where the test is performed geographically.2. The method of claim 1 , where reduced pressure is used to enhance exit transit of the desired analyte into the breath.3. The method of claim 2 , where the purified and standardized gas composition comprises hospital air gas.4. The method of claim 1 , where the purified and standardized gas composition comprises hospital air gas.5. A method of avoiding a contaminant which would skew an analyte result in a breath analysis method and of calibrating subject of the breath analysis comprising claim 1 , immediately before a breath analysis method or collection of breath for a breath ...

BREATHING BIOFEEDBACK DEVICE

Disclosed are biofeedback methods and devices suitable for providing biofeedback useful for helping a user control an own breathing, for example, to help in inducing deep breathing, and such biofeedback devices further comprising a dispenser for dispensing an inhalable substance. 1. A biofeedback device for providing biofeedback useful for helping a user control breathing , the device comprising:a housing configured to be hand-held by the user;an exhalation inlet for receiving exhaled breath from the mouth of the user, said exhalation inlet functionally associated with an exhalation conduit including an exhalation outlet, configured so that exhaled breath received by said exhalation inlet passes through said exhalation conduit and exits through said exhalation outlet;physically associated with said housing, an exhalation determiner functionally associated with said exhalation inlet, configured to determine when exhaled breath is received by said exhalation inlet; anda reporter associated with said exhalation determiner, said reporter configured to provide a signal related to an exhalation duration of said exhaled breath received from said exhalation determiner to the user,wherein said signal comprises a comparison to a preferred exhalation duration.2. The device of claim 1 , further comprising physically associated with said housing claim 1 , an inhalable substance outlet and a functionally-associated dispenser configured for dispensing an inhalable substance to the user through said inhalable substance outlet claim 1 , wherein said housing is configured so that when said exhalation inlet is positioned for said receiving said exhaled breath from the mouth claim 1 , said inhalable substance outlet is located in proximity of the nostrils of the user.3. The device of claim 2 , further comprising an inhalable substance reservoir functionally associated with said inhalable substance outlet claim 2 , said reservoir configured to store said inhalable substance and to ...

MINUTE VOLUME SENSOR OPTIMIZATION USING QUADRIPOLAR LEADS

An apparatus comprises a respiration sensing circuit configured for coupling electrically to a plurality of electrodes and for sensing a respiration signal representative of respiration of a subject; a signal processing circuit electrically coupled to the respiration sensing circuit and configured to extract a respiration parameter from a sensed respiration signal and determine a signal performance metric for the sensed respiration signal using the respiration parameter; and a control circuit. The control circuit is configured to: initiate sensing of a plurality of respiration signals using different electrode combinations of the plurality of electrodes and determining of the signal performance metric for the sensed respiration signals; and enable an electrode combination from the plurality of electrodes and for use in monitoring respiration of the subject according to the signal performance metric. 1. An apparatus comprising:a respiration sensing circuit configured for coupling electrically to a plurality of electrodes and for sensing a respiration signal representative of respiration of a subject;a signal processing circuit electrically coupled to the respiration sensing circuit and configured to extract a respiration parameter from a sensed respiration signal and determine a signal performance metric for the sensed respiration signal using the respiration parameter; and initiate sensing of a plurality of respiration signals using different electrode combinations of the plurality of electrodes and determining of the signal performance metric for the sensed respiration signals; and', 'enable an electrode combination from the plurality of electrodes and for use in monitoring respiration of the subject according to the signal performance metric., 'a control circuit configured to2. The apparatus of claim 1 , wherein the signal processing circuit is configured to extract a measure of tidal volume from the sensed respiration signal claim 1 , wherein the signal ...