329 results about "Exhaled air" patented technology

The invention discloses a method for establishing a pulmonary nodule malignant risk prediction model by integrating iconography indexes and expired gas VOCs (Volatile Organic Compounds) data, and belongs to the field of precancerous lesions of lung cancer and early prediction of lung cancer. In order to improve the accuracy of precancerous lesions of lung cancer and early prediction of lung cancer, the method comprises the following steps: acquiring a CT image of a patient with pulmonary nodules detected in lung CT, then processing the CT image of the patient with pulmonary nodules, and extracting image data of iconography indexes; collecting exhaled air VOCs of the pulmonary nodule patient, performing exhaled air VOCs index calibration and abundance analysis to obtain exhaled air data, and then performing multi-omics data arrangement in combination with image data to obtain a multi-omics data set; formulating a lung nodule malignant risk degree standard; and constructing a multi-omics deep learning model, and training the multi-omics deep learning model by using the data set of the pulmonary nodule malignant risk prediction model to obtain a pulmonary nodule malignant risk prediction model integrating iconography indexes and expired gas VOCs data.

The invention relates to a nitric oxide data analysis method and system for bronchial asthma assessment. According to the method, exhaled air nitric oxide and pulmonary alveolar nitric oxide of a patient, omics data and clinical information are acquired in a standardized manner, and multi-dimensional features are constructed after data cleaning and fusion; comprise an inflammation level index, an inflammation region entropy, an inflammation synergy index, a glucocorticoid response factor, an infection-smoking synergy influence factor and a heredity-symptom distribution index. And outputting initial risk assessment based on an explainable elevator EBM model, and finally generating an asthma risk probability through a weighted integration formula to realize three-level layering: low / medium / high risk. The system dynamically associates treatment decisions, for example, the drug dosage and the monitoring frequency are improved when the risk is upgraded, and the medication scheme is optimized when the risk is degraded. According to the scheme, the limitation of traditional single marker static analysis is broken through, multiple mechanisms of dissection, immunity and pharmacology are fused, the evaluation precision and clinical applicability are remarkably improved, the acute attack rate is reduced, and accurate typing treatment is guided.

The present invention provides a method, system, device, medium and program product for evaluating lung function based on respiratory impedance change, and relates to the field of intelligent medical treatment. The method includes: obtaining a time-series EIT image of a subject to be tested; calculating a first fixed amount of gas exhaled from the chest at the first exhaled volume in the exhalation phase and the first moment corresponding thereto based on the time-series EIT image; extracting the time-series impedance change of each pixel between the first moment and the end of FVC exhalation moment, and obtaining the exhalation change characteristic parameter of each pixel at the first exhaled volume; constructing a first regional time distribution diagram based on the exhalation change characteristic parameter; and obtaining the distribution characteristic parameter corresponding to the subject to be tested at the first exhaled volume based on the first regional time distribution diagram; comparing the standard distribution characteristic parameters of the subject to be tested and the healthy person at the first exhaled volume, and if the distribution characteristic parameter of the subject to be tested is greater than the standard distribution characteristic parameter, outputting the result that the subject to be tested has regional ventilation function damage.

The invention relates to the technical field of medical intubation, in particular to patient-assisted breathing intubation equipment for nursing, comprising an intubation bed divided into an upper plank bed and a lower plank bed; the head adjusting mechanism comprises a pillow groove formed in the top end of the upper plate bed, an adjusting groove is formed in the inner wall of the pillow groove, and a first supporting plate is fixedly connected to an opening of the adjusting groove. 3, sensing the change of the exhaled air temperature of the patient through the thermistor plate, namely the human body exhaled air temperature (6-37 DEG C vs and the room temperature of 24 DEG C), and when exhaled air flow is in contact with the thermistor plate, triggering the change of a current signal by the temperature change. After the PLC detects sudden change of current, the single-shaft motor is automatically controlled to drive the headrest to rotate, the elevation angle of the head is accurately adjusted to the optimal intubation position through magnetic attraction transmission of the electromagnetic block and the permanent magnet block, a nurse does not need to manually and repeatedly adjust the elevation angle, and especially time is saved in an emergency. The preset position of the thermistor plate ensures the angle accuracy.

A one-way breath training device has a mouth insert engaged to a cage housing a movable baffle. The mouth insert has an air hole extending from a first end to a second end. The baffle moves within the cage between a backstop having air pathways therethrough to the second end of the mouth insert. The cage has one or more guidance tracks which the baffle moves along. When a user attempts to inhale through their mouth, the inflow of air pulls the baffle against the second end and blocks the air hole to prevent further air from entering the air hole. When a user exhales through the mouth insert, the outflowing air pushes the baffle against the backstop of the cage thereby opening the air hole and air pathways for the exhaled air to escape.

An inflatable cushion that is orally inflatable using exhaled air. The inflatable cushion also can be inflated by breathing into an inflation chamber portion of the cushion and then squeezing the inflation chamber (e.g., with a user's hands and fingers), thereby increasing the pressure, to push additional air into the passages and channels to fill the seat cushion. A separate deflation chamber of the seat cushion can have a tubular check valve designed to be squeezed that opens the valve to deflate. The deflation chamber can be used to adjust the comfort of the inflatable cushion or to empty the inflatable cushion after use. The inflatable cushion can be made of thin plastic or similar material that is lightweight and can be folded, creating a structure that can be used several times before disposal.

A wearable respiratory isolation system is configured as an open collar to be worn loosely around the neck of the user, with an articulating arm positioning a mouthpiece in front of the mouth and nasal region of the user. The system provides filtered and sterilized air through a inhalation vent on the mouthpiece which creates a curtain of sterilized air in front of the users face, which protects the users face from air bourne pathogens provides sterile air for the user to inhale. Exhaled air is extracted through an exhalation vent on the mouthpiece, is decontaminated and exhausted to the rear of the user. A modified, background oriented Schlieren imaging technique is used to determine whether the user is inhaling or exhaling, and this information is used to control the flow of sterilized air and the capture of exhaled gases.

The invention provides a traditional Chinese medicine internal medicine clinical diagnosis detection breathing device which comprises an expiration cover assembly, a collection air pipe assembly and a detector body, the expiration cover assembly comprises an expiration cover body and a mouth biting part, the expiration cover body is of a spherical structure, and the mouth biting part is installed at the air inlet end of the expiration cover body; a first gas outlet end and a second gas outlet end which are symmetrical are arranged on the outer wall of the expiration cover body, a first gas outlet column and a second gas outlet column are installed at the first gas outlet end and the second gas outlet end respectively, and the collecting pipe assembly comprises a first gas collecting pipe, a second gas collecting pipe and a connecting pipe. The gas inlet end of the first gas collecting pipe is connected with a first gas outlet column in an inserted mode, the gas inlet end of the second gas collecting pipe is connected with a second gas outlet column in an inserted mode, the gas outlet end of the first gas collecting pipe and the gas outlet end of the second gas collecting pipe are communicated with a connecting pipe, and the connecting pipe is connected with the detector body. High-precision detection can be performed on exhaled air components of a patient, and a favorable basis is provided for clinical diagnosis of the internal medicine of traditional Chinese medicine.

The utility model discloses a respiratory nursing lung function rehabilitation training device, and relates to the technical field of medical equipment. The device comprises a base, a connecting cylinder is fixedly connected to the upper surface of the base, a connecting plate is fixedly connected to the top end of the connecting cylinder, a connecting block is fixedly connected to the top of the connecting plate, a ventilation groove is formed in the connecting block, a breathing hose is fixedly connected to the position, close to the bottom, of the outer surface of the connecting cylinder, and a bottom plate is placed in the connecting cylinder; a top plate is arranged on the upper surface of the bottom plate, and two ends of a spring are fixedly connected between the bottom plate and the top plate. According to the breathing training device, through the installed air filter element, when a patient exhales into the training device, air can be blown into the connecting cylinder from one side of the spring, then enters the air filter element from one circle of the edge to be filtered, and then comes out of the middle of the air filter element to flow into the ventilation groove, so that the exhaled air is filtered; furthermore, the quantity of germs in exhaled air is greatly reduced, and the sanitary condition of the device in use is optimized.

The invention belongs to the technical field of gas analysis, and relates to a surface-enhanced Raman scattering flexible substrate material as well as a preparation method and application thereof. The surface-enhanced Raman scattering flexible substrate material comprises a three-dimensional network structure and silver nanoparticles, the three-dimensional network structure is composed of hydroxypropyl methyl cellulose nanofibers, the silver nanoparticles are wrapped in the hydroxypropyl methyl cellulose nanofibers, and the silver nanoparticles are of a polyhedral structure. The surface-enhanced Raman scattering flexible substrate material is used for detecting thiol compounds in a solution, and the detection limit can reach 10 <-19 > M level; after the surface of the silver nanoparticle is modified with the probe, the material can detect trace substances in exhaled air. In addition, after the material is stored for 6 months at room temperature, the SERS signal intensity attenuation is less than or equal to 4%, and the relative standard deviation detected by 20 random sites is only 4.04%.

The present disclosure relates generally to breathing apparatuses where inhaled air and exhaled air are separated into different channels to permit a user to inhale fresh air. These devices can optionally filter inhaled air and exhaled air. These devices may include valves to help guide inhaled air and exhaled air to desired locations.

The embodiments provide a system including a pump configured to pump an air sample, from a container to a cooling chamber, the cooling chamber configured to cool the exhaled air sample to a sub-zero temperature, and is in fluid communication with an injector unit. The injector unit mixes the cooled air sample and inert gas and injects the mixed air sample at a high velocity to a test chamber. Further provided is a method for preparing an air sample for detection of a mixture of proteins.

The utility model relates to the technical field of bronchoscope examination covers, and discloses a bronchoscope examination cover with a sealing structure, which comprises an examination cover body, a sealing mechanism, a moisture absorption mechanism and a protective sleeve, the sealing mechanism comprises a first circular ring, an air bag, a first arc-shaped plate, a second arc-shaped plate, a fixing plate and a second hand pulling plate, a first reset spring is fixedly arranged in the middle of the end face of the rear side of the fixing plate, a first hand pulling plate is fixedly arranged on the end face of the rear side of the first reset spring, and a second reset spring is fixedly arranged between the second hand pulling plate and the first arc-shaped plate. According to the novel bronchoscope examination cover, the air bag is attached to the surface of a bronchoscope by inflating the air bag, the sealing performance of the examination cover is improved, dirt is prevented from flowing out of a gap, water in exhaled air can be absorbed by arranging activated carbon, water vapor is prevented from being attached to the surface of the examination cover body, and the examination cover is convenient to use. And the interior of the inspection cover body can be conveniently observed.

The invention relates to novel expiration detection equipment based on the quantitative analysis method, and the novel expiration detection equipment is applied to the fields of human health assessment, disease screening, clinical diagnosis and the like. The expiration diagnosis is an emerging in-vitro diagnosis method, the clinical application range of the expiration diagnosis is gradually expanded, real-time and on-line detection of human expiration is achieved, a quantitative method for markers in expiration is established, reliable endogenous marker experimental data is obtained, a human expiration marker data model is constructed, and the real-time detection of the human expiration is achieved. Powerful support can be provided for exhaled air physiology research, clinical application of exhaled air diagnosis and environmental exposure research. And quantitative analysis is carried out on healthy people and sick people in different areas, and hit rules of different people are set according to weight values, so that the accuracy of quantitative analysis is improved, and the requirement on the computing power of data analysis is reduced.

The utility model discloses an exhaled air enrichment mask for detecting bacteria in exhaled air, which comprises a mask body and a filter valve, the filter valve comprises a filter element, and the filter element sequentially comprises five layers of non-woven fabric, melt-blown fabric, hot air cotton, melt-blown fabric and non-woven fabric from inside to outside.

A mask-based diagnostic device for detecting a biomarker contained in a gas exhaled by a test subject. An exhaled air condensate (EBC) collector can convert exhaled air from the lungs and the respiratory tract into a fluid biological sample. The EBC collector includes a condensate forming surface and a thermal block thermally connected to the condensate forming surface. A fluid transfer system transfers the EBC to at least one of the test device and the EBC container. Before testing, the semipermeable membrane concentrates the target biomarker portion in the fluid biological sample to form a concentrated fluid biological sample for testing. The target biomarker release material, such as a cracking agent and / or mechanical cracking, can be used for acquiring the target biomarker in the virus envelope for detection. The test device may be a universal g-FET biosensor configured as a packaged semiconductor device that can receive and test EBC as a fluid biological sample.

The invention provides a breathing mask which is matched with the mouth or / and nose of a user to provide breathing airflow for a breathing device, the breathing mask comprises a main body, an expiration one-way valve, an inspiration one-way valve and a sealing piece, and the main body is provided with a first opening and a second opening; the expiration one-way valve is arranged in the first opening and comprises a first valve clack and a first stop block, the first valve clack is close to the exterior of the main body, the first stop block is close to the interior of the main body, and the expiration one-way valve is used for allowing expired air to flow out of the main body in one direction through the first opening; the air suction one-way valve is arranged in the second opening and comprises a second valve clack and a second check block, the second valve clack is close to the interior of the body, the second check block is close to the exterior of the body, and the air suction one-way valve is used for allowing external air to unidirectionally flow into the body through the second opening; the sealing member selectively seals the first opening or the second opening. By means of the breathing mask, expiration training and inspiration training can be achieved, and ventilation can be achieved easily.

The invention discloses a body training mask for passively adjusting oxygen concentration in breathing air, and relates to the technical field of physical training equipment, the body training mask comprises a body training mask mechanism, the outer side of the body training mask mechanism is connected with a bandage mechanism, and one side of the body training mask mechanism is provided with a filtering mechanism. According to the body training mask, the first-layer mask body and the second-layer mask body are flexibly connected through the flexible connecting piece, folding operation can be conveniently carried out in the using process, the size of the mask can be adjusted through a folding structure, and then the oxygen concentration can be accurately adjusted and controlled according to the breathing dead space principle; after the volume of the mask is adjusted by the folding structure, low-oxygen exhaled air which is not completely exhausted in the closed space is mixed with outside fresh air in the mask to form a stable low-oxygen environment, the volume of the mask is increased by unfolding the folding structure, the breathing dead space is enlarged, and the oxygen concentration is reduced; the contraction folding structure reduces the size, the breathing dead space becomes small, and the oxygen concentration is increased.

Disclosed is a germicidal device for air and for liquids, characterised in that it has five different operation modes, which comprises a series of particle-retaining filters (2, 14, 22, 25, 35) made of activated carbon and silver-ion fabric and through which a current of fluid passes at different pressures, propelled by motor-turbines (16, 17) towards labyrinth plates (5, 6). The plates surround a refrigeration compartment (9) containing emitters (7) of germicidal radiation, which refrigerate and purify gases such as ozone, preventing the consumption thereof and allowing same to be used as a germicidal reinforcement in the system. Purified air to be inhaled and exhaled air are carried through tubes (31, 32) between the device and a mask worn by the user, which are attached to the neck or head by means of retentive supports (37, 39, 40, 44, 45).

An improved balaclava can include a head cover adapted to at least partially cover a user's head and an injection molded facepiece attached to the head cover, wherein the injection molded facepiece is adapted to at least partially cover a user's mouth and nose region. The injection molded facepiece has a sealing portion that is adapted to form a seal at least partially around the user's mouth and nose region. The injection molded facepiece defines one or more vents positioned below the sealing portion, wherein the one or more vents are arranged to direct exhaled air and moisture in a generally downward direction and away from the user's eyes when the balaclava is worn.

The invention belongs to the technical field of gas detection, and relates to a portable detection device and method for oral expired gas. Comprising a gas collection end, a transmission pipeline and a micro-integrated gas sensor, the gas collection end is connected with one end of the transmission pipeline, the other end of the transmission pipeline outputs a gas sample, and the output gas sample is used for mass spectrometry detection; the transmission pipeline is internally provided with a plurality of micro-integrated gas sensors, and the micro-integrated gas sensors are used for detecting a target expiration marker; at least one micro-integrated gas sensor is correspondingly arranged for one target expiration marker; mass spectrum detection is combined with a sensor, multi-dimensional richer data information is provided through a mass spectrum, and detection information of the sensor is combined, so that the problems of data interference and signal background noise can be effectively solved, interference of other gas components is avoided, and the recognition accuracy is further improved; compared with a traditional oral cancer screening method, the oral cancer screening method is higher in speed and more efficient.

The invention relates to an exhaled air condensate metabolite composition, a kit and a method for predicting invasive lung adenocarcinoma. The expired gas condensate metabolite composition for predicting the invasive lung adenocarcinoma comprises lysyl-valine, lysophosphatidyl glycerol (19: 0), vanillyl-glucose, hydroxyproline-threonine, phenylalanine, dihydroxy benzophenone, palmitoyl glycine, triglyceride (43: 0), monobutyl phthalate, hydroxyphenyl propionic acid, oleoyl glycine and dodecanedioic acid. The preparation method comprises the following steps: adding 4-chlorophenylalanine and The kit for predicting the invasive lung adenocarcinoma comprises an internal standard substance required for detecting the metabolite combination. The combined marker provided by the invention has the characteristics of high sensitivity and high specificity on the diagnosis of the invasive lung adenocarcinoma.

The present invention discloses an anti-fogging nose pad, comprising: a nose pad for attaching to a human nose or nasal face, an extension for directing exhaled air downward, and a curved portion connecting the upper portion of the nose pad and the upper portion of the extension; a shaping strip is provided at the bottom of the nose pad; and when in use, the nose pad is hung on a mask. The nose pad is provided on the inner side of the mask, the side of the nose pad attached to the human nose or nasal face being the nose face side, and the nose face side being a hydrophobic surface; the side of the nose pad closer to the mask being the mask-proximal side, the lower portion of the nose pad being wedge-shaped, and the mask-proximal side of the lower portion of the nose pad having an inclined surface inclined from the mask toward the nose; the curved portion wraps around the upper edge of the mask, and the extension is provided on the outer side of the mask and extends downward. The present invention utilizes a curved portion, an extension, and an inclined surface to guide airflow, which, unlike conventional blocking design principles, reduces the impact of upward airflow on the adhesion of the nose pad and achieves an ideal anti-fogging effect.

The utility model discloses a respiratory protection suit easy and convenient to wear, and relates to the technical field of respiratory protection articles, the respiratory protection suit comprises a front mask, an eyeshade is fixedly installed inside the lower part of the top of the front mask, a filter cartridge is fixedly installed at the upper part of the bottom of the front mask, and a zipper is fixedly installed at the bottom of the front mask. A shoulder protector is arranged at the bottom of the zipper, a filtering mechanism is arranged in the filtering cylinder, and a wearing assembly is arranged on the rear side of the front mask. According to the respiratory protection suit easy and convenient to wear, through matched use of the filtering mechanism and all parts in the filtering mechanism, when breathing is conducted through equipment, outside air enters from an inner ring channel, exhaled air is exhausted from a channel between an inner ring and a filtering cylinder, and through the arrangement, the breathing effect is improved; according to the breathing device, exhaled and inhaled air can be filtered in the breathing process, the crossing problem is avoided, and meanwhile the filtering effect of the first filtering plate and the second filtering plate is enhanced through the one-way filtering effect.

To provide a new method, model, program or the like for acquiring information usable for a disease diagnosis or prognosis prediction by using a sample taken from lungs or exhaled breath.SOLUTION: A method for assisting disease diagnosis or prognosis prediction including: acquiring (A) extracellular particle information on a population of extracellular particles collected from lungs or exhaled breath of a subject; the extracellular particle information including scattered light information on scattered light of irradiated light about each extracellular particle of the population of extracellular particles, and light emission information on a plurality of light emission whose peak wavelengths are mutually different, caused from a component of the extracellular particles or a labelling substance connected to the component due to the irradiated light; and (B) disease information on a state of a disease in the subject from each subject included in a group of subjects; and acquiring information for assisting the disease diagnosis or the prognosis prediction related to the extracellular particles collected from the lungs or the exhaled breath by machine learning on the basis of a data set including the extracellular particle information and the disease information.SELECTED DRAWING: Figure 1

The application relates to a sampling device, in particular to a sampling device for real-time continuous analysis of end-exhaled air. The sampling device comprises first to fourth three-way valves, a first sampling ring, a second sampling ring, an air suction pump, a purge gas pipeline, an exhaled air pipeline, a carbon dioxide sensor and an analysis detector; the air inlets of the first sampling ring and the second sampling ring are connected with the purge gas pipeline through the first three-way valve and connected with the exhaled air pipeline provided with the carbon dioxide sensor through the second three-way valve; the air outlets of the first sampling ring and the second sampling ring are connected with the analysis detector through the third three-way valve and connected with the air suction pump through the fourth three-way valve; through linkage switching of the first to fourth three-way valves, the first sampling ring and the second sampling ring alternately carry out sampling and sampling, real-time accurate sampling of end-exhaled air in each breathing cycle and continuous sampling analysis are realized. The application has high time resolution, accurate end-exhaled air sampling and constant volume, and good consistency of detection results.

A protective headgear system includes a cover including a substantially transparent facial shield, a sheet sealingly coupled to the facial shield around the cover's perimeter, the sheet including a substantially anterior portion including a first sheet material configured to act as a substantial barrier to the passage of air, and including a substantially posterior portion including a second sheet material configured to filter contaminants from air, and one or more seams between the first sheet material and the second sheet material, a flow restrictor configured to significantly create a flow barrier between the cover and the neck of a user for providing an interior volume, an air mover configured to draw some of the external air into the interior volume, a filter coupled to the cover, and one or more flow directors configured to direct internal air, including at least some exhaled air, toward the second sheet material.

The invention relates to the field of medical data processing, in particular to a clinical evaluation and prediction method and system for exhaled gas and percutaneous carbon dioxide monitoring, and the method comprises the steps: determining a target skin area for implementing percutaneous carbon dioxide monitoring according to the body surface temperature data of a target object; according to the percutaneous carbon dioxide partial pressure of the target skin area, obtaining percutaneous carbon dioxide release characteristics; acquiring a relative change relationship between the percutaneous partial pressure of carbon dioxide and the exhaled gas partial pressure of carbon dioxide, and estimating energy metabolism characteristics in combination with percutaneous carbon dioxide release characteristics so as to construct a metabolism model matched with a target object and predict a disease risk change trend; evaluating and screening clinical detection data, and generating a disease risk evaluation result. By comparing and analyzing exhaled air and percutaneous carbon dioxide partial pressure data, the real body state can be comprehensively reflected, the potential health risk of a patient can be quickly predicted and evaluated, and the disease risk evaluation credibility can be improved.

The present application relates to a kind of photoionization ion mobility spectrometry of fast switching combination reagent ion, including photoionization ion mobility spectrometry, reagent ion generation device, reagent molecule carrier gas is introduced to reagent molecule into the reaction zone of ion mobility spectrometry, different types of reagent ions can be obtained by switching different gas paths and reagent molecules in positive ion mode, and the reagent ions in conventional gas flow mode are mainly (C3H6O)2H + , after switching combination gas path device, new hydrate cluster reagent ion H3O (H2O) n + Is generated by the regulation of acetone and water reagent molecule, and the reactivity is higher, the sensitivity of target detection is higher, so that by switching different gas paths, the high sensitivity and high selectivity detection of target compound can be realized, such as the detection of exhaled air ammonia and atmospheric ammonia in complex matrix background, and any sample pretreatment process is not needed.

Breathing apparatus for diving comprising one or more air tanks (5), a mouthpiece (1), an electronic control unit (7), a set of valves (2), and a counterlung (6). The control unit (7) is configured to open and close the valves so that the exhaled air is stored and extracted from the counterlung (6) at least once before being discarded. Preferably, the number of times depends on the depth.