167 results about "Exhaled air" patented technology

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 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 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.

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 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.

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.

The utility model discloses a medical respiratory medicine vital capacity training device, and relates to the technical field of vital capacity training, in particular to a box body, an air bag is arranged in the box body, a lifting plate is connected in the box body in a sliding mode, four fixing shells are fixedly connected to the top of the lifting plate, and a plurality of balancing weights are arranged in the fixing shells. Supporting plates are slidably connected into the box body, a filtering box is arranged between the two supporting frames, and a first air connector is fixedly connected to the side face of the filtering box. According to the vital capacity training device, cross infection between patients is reduced, and the problems that according to an existing vital capacity training device, an air blowing opening is inconvenient to replace, peculiar smell of air exhaled by the patients cannot be adsorbed, and follow-up training use of the patients is affected are solved.

The invention relates to the technical field of masks, and discloses an exhaled air condensate intelligent detection mask based on SERS technology, the exhaled air condensate intelligent detection mask comprises a condensate collection module, an SERS sensing module and a mask assembly, the condensate collection module comprises an EBC collection layer and a hydrogel antibacterial and refrigeration device, the EBC collection layer adopts a microfluidic microneedle array channel design, and the hydrogel antibacterial and refrigeration device is connected with the SERS sensing module. The SERS sensing module is used for condensing exhaled air into liquid, eliminating the influence of external bacteria and directionally conveying the exhaled air to a detection area, and the SERS sensing module is composed of a flexible substrate loaded noble metal nanostructure (a pH detection substrate, a malondialdehyde detection substrate, a NO2-detection substrate and a H2O2 detection substrate). By means of the intelligent mask, multiple EBC components such as the pH value, malondialdehyde, NO2 <-> and H2O2 can be detected at the same time, the limitation that an existing sensor is single in detection component is avoided, and the detection efficiency is improved; moreover, the design of the sensor ensures the stable operation of the sensor in a complex physiological environment, and ensures the reliability and accuracy of a detection result.

The invention discloses a valve micro lip-attaching dead-cavity-free in-mask waste gas replacement structure which comprises mask belts, an air filtering mask, an exhaust valve base, an exhaust one-way sealing opening, a one-way exhaust valve plate, a telescopic adjusting pipe, a left nose exhaust pipe, a right nose exhaust pipe and the like. By adjusting the position of the exhaust unit, the exhaust one-way sealing opening is slightly attached to the lip, the nose exhaust pipe is slightly attached to the nostril, the valve plate is directly opened by means of flowing energy of exhaled air, peripheral retention air is injected by means of the Venturi effect, exhaled waste gas is completely exhausted in real time, dead space is thoroughly eliminated, and the problems of oxygen deficit, stuffiness, fogging, stinking and high breathing resistance are solved.

A sensor device (30) for measuring concentrations of substances in the exhaled air of a vehicle occupant has a control unit (38), a measuring chamber (36), and a sensor (68) configured to measure substances in the measuring chamber (36). Gas from the vehicle interior (18) and exhaled air of the vehicle occupant can be captured via a first gas supply opening (31), while gas from the vehicle interior can be captured via a second gas supply opening (32). A valve (46) is provided for varying the quantity of gas flowing via the gas supply openings (31, 32, 33) to the measuring chamber (36) and for selectively preventing the respective gas supply. Furthermore, a vehicle with such a sensor device (30) and a method for determining the driving ability of a vehicle occupant are presented.

The invention discloses an exhaled gas VOC (volatile organic compound) marker for detecting inflammatory bowel diseases and a detection system thereof. The marker is a combination of one or more of the following components: methyl propyl sulfide, propionaldehyde, cyclohexanone, allyl methyl sulfide, octanal, 2-pentanone, phenol, butyric acid, propionic acid and 3-methylheptane. The detection system comprises an exhaled air sampling module, a sample preprocessing module, a detection analysis module and a data analysis module. The marker provided by the invention has the advantages of high specificity and good stability, can realize accurate noninvasive diagnosis of IBD, and can assist in realizing early screening and dynamic monitoring in a clinical environment.

To provide a new exhaled air component measuring device that prevents foreign matter such as saliva from entering through an inlet, shortens a time required for measurement when a plurality of subjects are measured consecutively, and enables more accurate measurement by eliminating the remaining exhaled air of a previous person.SOLUTION: An exhaled air component measuring device includes: a sensor tube 4 having an exhaled air inlet end 40 and an exhaled air outlet end 41; a blowing section 3 on the exhaled air inlet end 40 side; an exhaled air sensor 5 for detecting the blowing of exhaled air 100; an exhaled air component detecting section 6 provided in the middle of the sensor tube 4; and a measurement microcomputer 7 for controlling the exhaled air component detecting section 6 and receiving detection data therefrom. The exhaled air component detecting section 6 has an exhaled air component sensor 60 and an air supply pump 61 arranged in series on the sensor tube 4. The measurement microcomputer 7 is configured to, when the exhaled air sensor 5 detects the exhaled air 100, drive the air supply pump 61 to guide the exhaled air 100 to the exhaled air component sensor 60 and receive exhaled air component data output by the exhaled air component sensor 60.SELECTED DRAWING: Figure 1

The utility model discloses a conveying belt detection device which comprises a supporting frame and a detection device body, the supporting frame is suitable for being erected above a conveying belt, the detection device body is suitable for being arranged on the supporting frame, the detection device is suitable for detecting the conveying belt, and the detection device body comprises a visual detection module and a dust guiding module. The dust guiding module comprises an air inlet, an air outlet and a draught fan, the air inlet is formed in the detection side of the visual detection module, the air outlet is formed in the non-detection side of the visual detection module, the draught fan is suitable for enabling air to enter the air inlet, and the draught fan is suitable for enabling air to exit the air outlet. And the feeding state of the conveying belt can be detected and monitored more clearly and effectively, so that the detection accuracy is improved.

The application provides application of dimethyl carbonate as a chronic obstructive pulmonary disease diagnostic marker and belongs to the technical field of biomedical detection. The application first finds that the detection rate of dimethyl carbonate in exhaled air is significantly related to chronic obstructive pulmonary disease, and the detection rate of dimethyl carbonate in exhaled air of a chronic obstructive pulmonary disease patient is significantly higher than that of a healthy person. The ROC curve analysis result shows that dimethyl carbonate has extremely high specificity as a biomarker for diagnosing chronic obstructive pulmonary disease, and therefore can be used as a detection target for the diagnosis of chronic obstructive pulmonary disease patients, and has good practical application value.

The utility model relates to the technical field of medical instruments, and discloses an oxygen tube nose clip for clinical respiration, which comprises an oxygen tube, two nasal ventilation tubes are fixedly connected to the middle of the oxygen tube, a plurality of air outlets are arranged outside the nasal ventilation tubes, a fixing ring is fixedly connected to the top of each nasal ventilation tube, and the oxygen tube is fixed to the fixing ring. The inner wall of the fixing ring is fixedly connected with a connecting assembly used for being connected with a follow-up mechanism, the other end of the connecting assembly is fixedly connected with a piston, the inner wall of the stuffy nose tube is slidably connected with a foam light ring, and the outer wall of the fixing ring is fixedly connected with a fixing assembly used for fixing the nasal splint to the nasal cavity opening of a patient. The fixing assembly comprises a plurality of springs, and the close ends of the springs are fixedly connected to the outer wall of the fixing ring. According to the oxygen supply device, the breathing process and the exhaling process are separated, oxygen and exhaled air are prevented from being mixed during secondary breathing, the purity of oxygen inhaled by a patient is guaranteed, and the oxygen supply effect and the treatment effect are improved.

The invention relates to a system for measuring a level of a subject's immune activity (10), the system comprising: - an exhaled air sensor (20), - a device for measuring exhaled air (30), - computation means (40) suitable for determining data relating to the air exhaled by the subject from the measurements carried out by the device (30), - a memory (60) suitable for storing the measurements performed by the device (30) and / or the data calculated by the means (40), and the subject's personal data, - a computation means (70) suitable for determining a level of the subject's immune activity on the basis of at least one item of exhaled air data, generated in real time by the means (40) and / or stored in the memory (60), - a communication and management interface (80) suitable for presenting said level of the subject's immune activity and / or sub-scores of immunological activity, inflammatory activity, digestive inflammation and / or pulmonary inflammation.

The present application relates to the field of data processing, in particular to a human exhaled air quantitative collection and partial component measurement method, medium and equipment. It comprises: according to the corresponding down-flow signal transmission time and up-flow signal transmission time of each collection time; generating the fluid velocity of each collection time; and generating the collection amount of human exhaled air components. Through the electrochemical sensor, the volume content of part of the gas components in the exhaled air is measured. In the present application, the exhaled air gas flow rate is obtained by setting the ultrasonic flow meter group on the gas collection pipeline, and then the change relationship of the flow rate with time can be obtained. The total flow of the exhaled gas in a certain time period is calculated by definite integral, and then the volume of the human exhaled air in the time period can be quantitatively collected. In addition, through the electrochemical or infrared light measurement method, after the volume of the human exhaled air is measured, the function of measuring part of the components (such as NO) in the exhaled air is also possessed.

A two-chamber filtering half mask (FFP 1, 2, or 3 or KN, N or OP) hereinafter referred to as a "two-chamber mask(1)", characterized in that an "airtight partition", hereinafter referred to as a "membrane(1)", divides the cavity of the mask into two chambers. The upper chamber is for inhalation through the nose and the lower chamber is for exhalation through the mouth, in order to prevent the mixing of exhaled air with fresh air.

The described vaping device is an all-in-one system that allows users to inhale vaporized liquid and exhale smoke, which is filtered through activated carbon granules. The device utilizes dual-purpose apertures for both inhalation and exhalation. A small airhole regulates airflow during inhalation, preventing the backflow of exhaled air into the inhalation mouthpiece. The device also features ergonomically distinct mouthpieces for inhalation and exhalation, providing tactile feedback to ensure the user correctly identifies which mouthpiece is in use. Additionally, the design requires users to change the device's position during inhalation and exhalation, further preventing confusion between the two functions.

The invention relates to a medical xenon recovery system based on multistage filtration and dynamic separation. The medical xenon recovery system comprises a pretreatment and microorganism inactivation module, a gas purification and separation module, a xenon circulation distribution module, an intelligent monitoring system and a dynamic pressure compensation mechanism. The invention further relates to a medical xenon recovery method based on multi-stage filtration and dynamic separation, bacteria are intercepted through the filter screen, viruses are intercepted through large particles, short-wave sterilization ultraviolet LED array irradiation is combined, double barriers of physical interception and ultraviolet inactivation are formed, the method is far superior to a traditional single filtration technology, the grade cleaning standard is met, and the medical xenon recovery method has the advantages of being simple in operation, low in cost and high in efficiency. The system thoroughly solves the biological potential safety hazard of lack of ultra-small virus interception and inactivation in the prior art, can efficiently inactivate respiratory pathogens, can effectively prevent microorganisms in exhaled air from circulating to patients or medical staff through a recovery system, is especially suitable for infectious surgery scenes, and remarkably reduces the risk of cross infection in hospitals.

A system (100) for collecting particles (P) contained in air (16) exhaled by a subject for analysis comprising: an inertial impactor (10) configured to sort and collect particles (P) contained in air (16) exhaled by a subject according to their mass. The inertial impactor (10) comprises at least one substrate (33, 43, 53) for collecting particles (P), and at least one holding device (24) for securing the at least one substrate (33, 43, 53) in the inertial impactor (10) during the collection of particles (P). The at least one substrate (33, 43, 53) comprises or consists of a material that is at least partially water-soluble at a temperature greater than 0°C and less than 100°C and / or least partially transparent.

This invention discloses an emergency vehicle-mounted isolation face shield, belonging to the field of personal protective equipment technology. The face shield includes a main body, an airtight fit structure, a dual-path independent airflow module, a multi-stage virus filtration and purification unit, an external air supply interface, an anti-fog window, and quick-fix components. The main body is integrally formed from a transparent anti-fog window and flexible edging; the airtight fit structure uses a three-section silicone sealing gasket combined with a micro-groove air-guiding structure to achieve a 360° low-leakage seal; the dual-path independent airflow module achieves physical separation of inhaled and exhaled air; the multi-stage filtration unit includes a pre-filter layer, a high-efficiency nano-filter layer, a virus inactivation layer, and a deodorizing adsorption layer; the external air supply interface can be connected to a vehicle-mounted air supply system, achieving unlimited endurance and automatic air source switching. This invention solves the problems of poor airtightness, low filtration efficiency, breathing difficulties, limited endurance, and inconvenience in emergency situations found in existing face shields, and is suitable for various scenarios such as infectious disease control, fire escape, and vehicle-mounted emergency response.

The present invention relates to an industrial dust mask including an oxygen generating element, and more particularly, to an industrial dust mask including a mask body, a fixing band for fixing the mask body to a face of a wearer, an exhaust unit formed in an outer surface area of the mask body and provided with an exhaust port for discharging exhaled air of the wearer to the outside, and an oxygen generating element inserted into an area of the exhaust unit, which receives water vapor and carbon dioxide generated by breathing of the wearer and generates oxygen by a chemical reaction. A through hole is formed in the mask body and the exhaust unit so that a part of the exhaled air of the wearer discharged to the outside through the exhaust port of the exhaust unit is transferred to the oxygen generating element inserted in the exhaust unit through the through hole to generate oxygen. The oxygen generated by the oxygen generating element is supplied to the wearer through the through hole when the mouth and nose of the wearer inhale.

The utility model belongs to the related technical field of respiratory trainers, and particularly relates to a respiratory training device which comprises a training cover, a wearing mechanism and a detection mechanism, the respiratory training device can respectively control inspiration pressure and expiration pressure according to the use requirements of trainees through the arranged training cover, the training accuracy of the trainees is improved, and the training efficiency is improved. By means of the arrangement of the mask shell, special training can be achieved, through the arrangement of the wearing mechanism, the sealing performance of the mask shell attached to the face can be improved, the training precision is improved, carrying is convenient, other activities of trainees during training are not affected, through the arrangement of the detection mechanism, training can be stopped when the trainees have difficulty in breathing, and the training safety is improved; by arranging the protection groove and the protection frame, cross infection of exhaled or inhaled air to other people or the trainee can be effectively avoided, and the cleanliness of the air breathed by the trainee is guaranteed.

A sterilization device for air and liquids is disclosed, characterized by five different modes of operation. The device includes a series of particle-retaining filters (2, 14, 22, 25, 35) made of activated carbon and silver ion fibers, through which fluids pass at different pressures toward labyrinth plates (5, 6) propelled by motor-turbines (16, 17). The plates surround a refrigerated compartment (9) containing a germicidal radiation emitter (7), which refrigerates and purifies gases, such as ozone, preventing their consumption and making them available as a germicidal supplement within the system. Inhaled purified air and exhaled air are conveyed through tubes (31, 32) between the device and a mask worn by the user, which is attached to the neck or head by support supports (37, 39, 40, 44, 45).

This application relates to an electrically powered air-purifying respirator and its exhalation filtration structure, comprising: a soft rubber mask, a core mechanism, a filter element, and an adjustment strap. The soft rubber mask has a mask latch on the front, which axially engages with a mask connecting latch on the rear side of the core mechanism's fan compartment. The filter connecting latch on the front side of the core mechanism's fan compartment axially engages with a filter latch on the rear side of the filter element. These three components can be quickly assembled and disassembled without precise alignment. An electric fan inside the fan compartment operates, causing outside air to be filtered by the filter element into clean air, which then enters the soft rubber mask for the wearer to breathe. Each side wall of the soft rubber mask has an air outlet, covered by a diaphragm. During exhalation, the diaphragm opens, and exhaled air enters the air outlet filter through the enlarged outlet for purification before being discharged, preventing secondary pollution. The adjustment strap can be quickly tightened and prevents loosening. This application offers convenient assembly and disassembly, a secure fit, and highly efficient exhalation filtration, making it suitable for medical and epidemic prevention, industrial protection, and other occasions requiring clean air.

The utility model discloses a blowing nozzle structure for lung function testing, which comprises a blowing nozzle cover body, a connecting pipe capable of filtering blown air is arranged at the bottom of the blowing nozzle cover body, a filter screen is arranged in the connecting pipe, a detachable auxiliary blowing pipe is arranged in the blowing nozzle cover body and corresponds to the position of the connecting pipe, and the auxiliary blowing pipe is connected with the connecting pipe. The bottom of the connecting pipe is fixedly connected with a connecting nozzle used for being connected with the connecting pipe. According to the lung function instrument, the filter screen is arranged, air blown out by a patient can be effectively filtered, so that impurities such as saliva and secretions in exhaled air are effectively prevented from entering the lung function instrument, cross infection is effectively prevented, meanwhile, the detachable auxiliary blowpipe is arranged, and the auxiliary blowpipe can be conveniently used according to the requirements of the patient. When the blowing nozzle is used, the auxiliary blowing pipe is inserted into the connecting pipe to blow air in the mouth, or the auxiliary blowing pipe can be pulled out, and the blowing nozzle cover body covers the mouth to blow air, so that the use flexibility of the blowing nozzle is improved.