207 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 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.

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 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 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 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.

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.

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.

The invention discloses a hematopoietic stem cell transplantation complication relieving device which comprises an outer shell used for covering the nose and the mouth of a user and a contact pad body installed on the rear side face of the outer shell and used for being tightly attached to the face of the user, and an exhaust pipe used for exhausting exhaled air is fixed to the interior of the front side face of the outer shell in a penetrating mode. A carbon dioxide sensor is installed on the inner wall of the front side face of the outer shell, an exhaust control assembly used for controlling internal gas circulation is installed in the exhaust pipe, an air inlet pipe is fixed to the bottom face of the outer shell in a penetrating mode, and the lower end of the air inlet pipe is connected with the upper cover body. According to the complication relieving equipment after hematopoietic stem cell transplantation, the gas pressure in the outer shell is increased, so that a large amount of gas is inhaled into the nasal cavity of a user, the user actively inhales a large amount of gas at a time, and the breathing complication after hematopoietic stem cell transplantation is well relieved through the relieving equipment.

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.

The breathing mask comprises a mask body, an air inlet and an air outlet, when the mask body covers a human face, a closed space is defined to form a mask cavity, and the air inlet and the air outlet are formed in the mask body; the first check valve is arranged at the air inlet so as to prevent exhaled air from being mixed into the oxygen pipeline; the second check valve is arranged at the air outlet so as to prevent air outside the cover cavity from being sucked into the cover cavity; and the second check valve and the first check valve are the same in structure and opposite in mounting direction. According to the scheme, the air inlet and the air outlet are separately formed in the breathing mask, the design of the non-return piece is enhanced, and therefore the problem that in the prior art, the breathing mask cannot provide high-flow pure oxygen for a patient is solved.

The plastic auxiliary ventilation mask comprises a mask body, a sealing assembly is arranged in the mask body, the sealing assembly comprises an air guide cover arranged in the mask body, and a first connecting port and a second connecting port are formed in the top end of the air guide cover; the first connector and the second connector are symmetrical relative to the central axis of the mask body and are equal in inner diameter and height; the sealing assembly can seal gaps among the nasal cavity of a patient, the endoscope body and the oxygen pipe when the patient is subjected to endoscopy, meanwhile, the mask body is arranged to be open, water column condensation possibly caused by exhaled air of the patient is directly avoided, and when the mask body is used, the mask body is not prone to falling off. The mask body is fixed to the face of a patient through the elastic pull rope and the like, the two elastic rings arranged at the free end of the rotating plate in a penetrating mode cover the outer side of the oxygen pipe and the outer side of the endoscope body respectively, sealing is completed after the state of the sealing assembly is locked, and endoscopy is started.

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.