104 results about "Exhaled air" patented technology

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 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 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 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 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 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.

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.

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.

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.

A method to assess the disease status, determine the mean / average control of the disease and monitor the compliance to treatment over a period of time of a respiratory disease, comprising of predicting the degree of airway inflammation and disease activity by measuring the inflammatory markers, evaluating the mucosal integrity / damage by measuring the moisture levels of the exhaled air, evaluating the breathing function and obstruction by measuring the FEV1 value, and evaluating the symptom control by determining the COPD Score.

The invention relates to the technical field of medical care, in particular to a device for inhibiting sneezing after pituitary tumor postoperation, which comprises a mask, detachable nose wing extrusion modules for pressing the nose wings of a patient are mounted on two sides of the mask, and an external air treatment module for treating external air is mounted on the front side of the mask. Second one-way valves which are fixedly connected with the mask and used for exhausting exhaled air are arranged on the two sides of the external air treatment module, and a control module is further installed on the outer side of the mask; once the nasal cavity of the patient is stimulated, the patient does not sneeze immediately and has a sneezing precursor, an airflow detection mechanism of the external air treatment module is used for monitoring whether the patient is in the sneezing precursor or not, and once the sneezing precursor occurs, the control module is used for controlling the nose wing extrusion module to be started, so that the patient can sneeze quickly. The nose wing extrusion module presses the two sides of the nose wing, mucous membrane sensitivity in the nasal cavity can be relieved, and therefore impulse of sneezing is restrained, and the positive effect on postoperative recovery of a patient is achieved.

A reusable face respirator mask for respiratory protection comprising a body dimensioned to fit over a portion of a face of a wearer, including a rigid support component and a flexible seal component molded to the rigid support component, a replaceable filtering element sized and configured to removably cover the rigid support component, and a cover configured to removably couple with the rigid support component of the body. The filtering element is used to filter particles and / or pathogens from inhaled and / or exhaled air. A thumb release located on the cover allows the wearer to decouple the cover to accommodate frequent replacement of the filtering element. The flexible seal component is configured to interface with the face of the wearer and deform under moderate pressure to create a substantially airtight seal with the wearer's face.

The application discloses a kind of early warning screening systems of critical patient based on CI-TOFMS detection exhaled air VOCs, belong to early screening field.It includes sample processing system, CI-TOFMS, data processing module;The sample processing system is used to collect and pre-process exhaled air sample, the CI-TOFMS is used to detect exhaled air sample and obtain eVOCs spectrum, the data processing module is used to collect eVOCs spectrum data, and output early warning result;The data processing module includes data input module, eVOCs-based critical illness prediction model and result output module.The system of the application only needs to collect respiratory air to carry out the health status evaluation of test person, and it is very convenient.The eVOCs-based critical illness prediction model constructed further improves the accuracy and sensitivity of eVOCs detection technology in critical patient diagnosis, and provides more reliable diagnostic basis for clinicians.

There is provided a breath sensing system including: a breath sensor which senses exhaled air, the breath sensor having a light emission unit which emits light that is directed toward a path through which the exhaled air passes, and a light receiving unit which receives at least a part of the light, and which outputs a light receiving signal; a respiration information calculation unit which calculates respiration information; a reliability calculation unit which calculates reliability level information; an output unit which outputs the respiration information and the reliability level information; a receiving unit which receives the respiration information and the reliability level information; a movable unit which is provided with the breath sensor, and which has a variable position; and a notification unit which provides a notification of information related to the movable unit, according to the reliability level information.

A mouthpiece is disclosed through which a user inhales and exhales when providing an exhaled breath sample. The mouthpiece includes a mouth-engaging element about which a user places their mouth when using the mouthpiece and also a housing having a housing wall. The housing wall defines a first aperture through the housing wall, the first aperture being linked by a conduit defining a first fluid flow path to the mouth-engaging element. Interposed therebetween is a first directional valve, allowing air into the mouthpiece from atmosphere. A second conduit is provided, defining a second fluid flow path from the mouth-engaging element, and directing exhaled air out of a second aperture of the mouthpiece. The second conduit houses a second directional valve housed within the second fluid flow path.

A system is provided that detects the odor of air exhaled from a subject. Based on affection information and the odor, the system indicates features of the exhaled air related to a disease based on measurement information in which the affection information indicates affection or non-affection. The system also detects the odor in the air from a medical examinee. Based on the measurement information and the features, the system determines the possibility that the medical examinee will be affected with a disease.

The invention relates to the field of medical data processing, and discloses an endometriosis pain emotion pressure data management system based on AI prediction, which comprises a mobile terminal, an Internet of Things treatment monitoring device, an expiration detection device and a data processing server. The expiration detection device is used for detecting volatile organic compounds in expired gas by utilizing a sensor array; the Internet of Things treatment monitoring device collects heartbeat interval and skin conductivity data and executes transcutaneous nerve electrical stimulation; and the server runs the deep learning model. According to the invention, time alignment and feature splicing are carried out on physiological, expiration and behavior data through a multi-source heterogeneous data fusion module, and the pain occurrence probability is predicted by using a long-short-term memory network and an attention mechanism; early warning is generated according to the prediction result, the electrical stimulation frequency and waveform are adjusted in a closed-loop mode based on the real-time skin conductivity change slope, and multi-dimensional objective monitoring, pain risk active prediction and self-adaptive closed-loop intervention of endometriosis are achieved.

An alcohol detection device according to one aspect of the invention comprises an alcohol sensor and a control circuit. The alcohol sensor is designed to detect an alcohol component present in the exhaled air of a vehicle occupant. The control circuit is designed, based on a detection result from a door sensor designed to detect whether each of the vehicle doors is open or closed, to control the alcohol sensor so that it does not perform an initialization process during periods when one or more of the doors are open, and to control the alcohol sensor so that it performs an initialization process after all doors have been closed.

This invention provides a methoxyflurane inhalation and administration device, comprising a main body with a mouthpiece at one end and a drug inlet at the other end. The main body has a one-way drug inhalation channel leading from the drug inlet to the mouthpiece, and a drug inhalation core is placed in this channel. The main body has a dilution orifice, and a secondary tube is located above the dilution orifice. The secondary tube has an air inlet and an air outlet, and an air filter is located at the air outlet. The secondary tube also has a reversing valve with an inlet membrane and an outlet membrane that respectively cover the inlet and outlet, forming a one-way inlet dilution channel and a one-way exhalation filtration channel. In use, the air inlet of the secondary tube can be blocked with the hand to increase the methoxyflurane concentration, quickly achieving analgesia or anesthesia. This induces drowsiness; removing the hand from the inlet reduces the methoxyflurane concentration, preventing overdose. Furthermore, the exhaled air is filtered before being discharged from the device, avoiding environmental pollution from residual methoxyflurane.

The utility model belongs to the technical field of dust masks, and particularly relates to an intelligent dust mask which comprises a shell and further comprises a first air inlet assembly used for introducing air into the shell during air suction and arranged at the bottom end of the shell and a second air inlet assembly arranged at the bottom end of the shell. The filtering assemblies are used for filtering air introduced into the shell, and the filtering assemblies are arranged at the two ends of the shell; the air conveying assembly is used for conveying filtered air, the air conveying assembly is further provided with an air conveying assembly for conveying exhaled air into the shell, and the air conveying assembly is arranged on the side, facing the face, of the shell. By arranging the first air inlet assembly, the filtering assembly, the air conveying assembly and the second air inlet assembly, part of air can be filtered in advance when a person exhales, then the amount of air inhaled by the person at the moment can be increased when the person inhales after exhaling, the person can be prevented from strongly inhaling to a certain extent, and the safety of the person is improved. And the comfort is improved.

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.