1279results about "Breathing filters" patented technology

The present invention is an electrospun web including a carrier substrate and an electrostatically charged nanofiber. The electrospun web has a pressure drop of about 5 mmH2O or less, a percent penetration of about 50% or less, and a clarity of about 80% or more.

The present invention relates, in general terms, to a face mask. The present invention also relates, in general terms, to composite material, iron-iron oxide compositions and their methods of fabrication thereof. In particular, the iron-iron oxide composition comprises a cashew testa extract and iron particles and / or oxide core-shell particles. The iron-iron oxide composition can be used as an anti-microbial composition.

A smart face mask device includes a housing that is designed to mount to a personal protective face mask and a memory within the housing that is configured to store sensor data. The device includes one or more sensors configured to generate the sensor data during use of the personal protective mask. The device also includes a processor operatively coupled to the memory and configured to process the sensor data to determine information regarding a user of the personal protective mask, and to transmit the information regarding the user to a remote application.

The present invention deals with a heat and moisture exchange filter with biocidal activity for medical ventilation equipment that comprises polymeric cellulose fibers impregnated with silver nanoparticles (AgNPs). The heat and moisture exchanger filter can be used in intubated patients under artificial ventilation in anesthesiology and intensive care and allows robust replacement, a fundamental utility for protection against nosocomial cross-contamination infections caused by microorganisms, such as bacteria, fungi, yeasts and viruses.The invention also deals with the method of preparing the heat and moisture exchange filter with biocidal activity and the use of silver nanoparticles.

The present technology relates to an electroporation based antimicrobial apparatus The electroporation based antimicrobial apparatus includes a negative electrode and a positive electrode powered by an energy source, operatively coupled to an air inlet structure, such that upon applying 10 an external electric field across the negative electrode and the positive electrode, a lightning-rod effect is generated that causes permanent damage to outer structure of microbes passing along with air through the air inlet structure, thus achieving instant disinfection. The energy source includes a 15 respiration driven triboelectric Nanogenerator (R-TENG) for harvesting wasted biomechanical energy from the periodic motion of respiration. The R-TENG includes a pair of nanofiber films comprising a first nanofiber film composed of a tribopositive material and a second nanofiber film 20 composed of a tribonegative material. The tribopositive and tribonegative materials are with opposite polarity and the R-TENG serves as a filtration system concurrently. Most illustrative diagram:

A disposable facemask is provided having a filter body with an opening sized to cover the nose and mouth of a wearer. The filter body further includes an outer mask layer and an inner mask layer, and one or more intermediate layers disposed between the outer and inner mask layers. At least one of the intermediate layers is a nonwoven web layer including thermoplastic filaments formed from a random copolymer, or a random copolymer blended with a homopolymer.

The utility model discloses a clean storage system for a household breathing machine. The machine body is provided with a breathing machine placing area, a storage device, an air purification system and a display control component, an air outlet is at least formed in the breathing machine placing area or the part, close to the breathing machine placing area, of the machine body, the storage device is provided with a storage chamber, an exhaust port and a storage port capable of being opened and closed, and the storage chamber is communicated with an air supply device. The air purification system is provided with a fan, an air purification device, an air outlet and an air inlet, an airflow channel in the machine body in the air outlet direction of the air purification device is a clean air area, the air outlet communicates with the airflow channel, the breathing machine containing area forms the clean air area, and the air supply device sucks clean air. The household breathing machine platform is provided with a special platform space for placing various types of household breathing machines, has an air source filtering and purifying function, and has the advantages that accessories / parts of the household breathing machines can be cleanly accommodated and stored, indoor environment air can be purified, and the like.

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

Face covering system for protecting a wearer from airborne particulate matter includes a headband attachment system and a face covering having a plurality of layers, as follows: an outer, a stiffening, a filtration, and an inner layer. The face covering forms a breathing space in the unfolded or donning position. The breathing space is formed by an upper nose panel, a bottom chin panel, a top central panel, and a bottom central panel. The upper nose and bottom chin panels are conformable to the face while cooperating with the top and bottom central panels. The breathing space provides for improved comfort and sealability and operates to help keep the upper nose and bottom chin panels from rubbing against the wearer's lips. The face covering system further includes a nose cushion member, a nose wire, and various welds and weld seams for coupling the various components of the face covering together.

The invention discloses an intelligent air supply mask, and relates to the technical field of protective masks, the intelligent air supply mask comprises a mask main body, and the mask main body is used for covering the mouth and nose of a wearer to form a breathing space; the mask further comprises a filter element assembly, an air outlet valve, a sound transmission assembly, a pressure sensor, an air supply assembly, a control device and a power supply assembly which are arranged on the mask body, the filter element assembly communicates with the breathing space and filters inlet air, the filter element assembly comprises a filter box and a filter element, the filter element is arranged in the filter box, and the filter element is a corrugated filter element; the air outlet valve is communicated with the breathing space for exhausting; the sound transmission assembly is used for transmitting sound; the pressure sensor is used for detecting gas pressure in the breathing space; the air supply assembly is used for assisting in supplying air into the breathing space; the control device controls the air supply assembly to work according to the gas pressure data; the power supply assembly is used for supplying power. Auxiliary air supply can be carried out, follow-up adjustment is achieved, the stuffiness feeling of a wearer is reduced, the service life of the filter element can be prolonged, and the dust containing degree of the filter element can be improved.

The invention discloses a clean storage system for a household breathing machine. The machine body is provided with a breathing machine placing area, a storage device, an air purification system and a display control component, an air outlet is at least formed in the breathing machine placing area or the part, close to the breathing machine placing area, of the machine body, the storage device is provided with a storage chamber, an exhaust port and a storage port capable of being opened and closed, and the storage chamber is communicated with an air supply device. The air purification system is provided with a fan, an air purification device, an air outlet and an air inlet, an airflow channel in the machine body in the air outlet direction of the air purification device is a clean air area, the air outlet communicates with the airflow channel, the breathing machine containing area forms the clean air area, and the air supply device sucks clean air. The household breathing machine platform has a special platform space for placing various types of household breathing machines, has an air source filtering and purifying function, and has the advantages that accessories / parts of the household breathing machines can be cleanly stored, indoor environment air can be purified, and the like.

Systems, devices and methods are provided for producing a product comprising a filter media, such as a gas or liquid filter. A system comprises a feeder for advancing a substrate comprising fibers from an upstream end to a downstream end and a dispersion device for dispersing nanoparticles into the substrate as the substrate is advanced by the feeder to form the filter media. The system further comprises a container for receiving clusters of nanoparticles and a feed system for conveying the clusters of nanoparticles from the container to the dispersion device. The feed system is particularly useful for introducing nanoparticles into a continuous manufacturing process at a controlled flow rate. The system both conveys and elevates the nanoparticles and allows for the manufacture of filter media with improved quality and yield and reduced cost and time. In addition, the system is scalable and produces filter media with less variation.

A wearable air purifier is provided and includes a headgear, an air delivery mask, and a fan. The air delivery mask is connected to the headgear and bounds an air delivery region. The air delivery mask is further configured to define a first airflow path to deliver a flow of air to the air delivery region. The headgear defines a second airflow path. The fan is configured to direct airflow to the first airflow path and the second airflow path.

A head wearable air purifier is provided. The head wearable air purifier includes a first speaker assembly, a second speaker assembly, a nozzle, and a control circuit. The first and second speaker assemblies are arranged to be worn over the ears of a user. The first speaker assembly includes a filter assembly, a motor-driven impeller for creating an airflow through the filter assembly, and a first speak assembly air outlet downstream from the filter assembly for emitting a filtered airflow from the first speaker assembly. The nozzle can receive the filtered airflow from the first speaker. A nozzle air outlet emits the received filtered airflow towards a mouth and / or a nose of the user. The control circuit can control the motor-driven impeller of the first speaker to have a maximum rotational speed from 9,000 to 18,000 RPM and can implement active noise cancellation for the first speaker assembly.

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 belongs to the technical field of respirators, and particularly relates to an oxygen production tank and a respirator applying the oxygen production tank, the oxygen production tank comprises a tank body for gas circulation, a plurality of partition plates are arranged in the tank body along the gas flowing direction, and the partition plates are arranged in parallel along the direction perpendicular to the gas flowing direction; a reaction flow channel is formed in a gap between every two adjacent partition plates, the side wall of each reaction flow channel is provided with groove positions for positioning a medicament, the groove positions are in a long strip shape in the gas circulation direction, and the multiple groove positions are sequentially arranged side by side in the direction perpendicular to the gas circulation direction; the plurality of slots on the two adjacent clapboards are arranged in a staggered manner; according to the invention, the medicament can be ensured to be firmly fixed and stable in the reaction flow channel without moving, so that the influence of dust generated by the movement of the medicament on the breath of a user can be greatly reduced; and the reaction can be performed in sequence along the flowing direction of the gas, so that the overall reaction balance of the medicament is ensured, the use efficiency of the medicament is improved, and waste is avoided.

An apparatus or kit for a respiratory support system for delivering humidified gas to a user or patient. The apparatus comprising a humidifier chamber in pneumatic communication with a gases source, an inspiratory conduit in pneumatic communication with the humidifier chamber downstream of the humidifier chamber, a filter that is in pneumatic communication with the inspiratory conduit downstream of the inspiratory conduit, and a patient interface for delivering humidified gas to a user or patient, wherein the patient interface is in pneumatic communication with the filter downstream of the filter, or is configured to be placed in pneumatic communication with the filter downstream of the filter.

A facial covering assembly comprises an inner frame comprising at least one aperture to allow air flow through the inner frame and an outer frame configured to couple to the inner frame. The outer frame comprises at least one aperture to allow air flow through the outer frame. The facial covering assembly further comprises a cushioning element configured to couple to the inner frame, the cushioning element configured to establish a seal around at least a portion of a user's face.

A safety helmet for a firefighter includes an outer shield having a neck opening and a front opening, a hinge located on an upper region of the front opening of the outer shield, a fire-retardant foam liner, a face shield including a sensor carrier attached to the hinge, a particulate air filter, a light emitting diode (LED) light strip, a mask mechanism configured to attach to the tapered nose opening of the transparent screen and the particulate air filter, a heads-up display (HUD) connected to an upper region of a proximal edge of the mask mechanism which faces the tapered nose opening, an oxygen port connected to the mask mechanism, a mask body connected to a distal edge of the mask mechanism, a speaker and microphone unit attached to the mask body, and a regulator nose cone.

A set of designs for an electrically heated respirator / face mask to kill or deactivate airborne viruses and bacteria by creating a seamless thermal and / or humidity chamber / barrier around the wearer's nose and mouth area; in addition to efficiently filtering the tiny particles according to NIOSH N95 standards, it reduces the chance of contracting the disease. The designs include various combinations: a disposable or reusable N95 respirator with or without an exhalation valve, disposable or reusable medical face mask, both with or without integrated and replaceable filter layers, and a reusable respirator with filter cartridges. Each design comprises multiple layers with an active thermal filter with a heating element, which is made of graphene. The respirator is connected via a USB cable to a power unit. A control module is used to turn the device on and off and optionally control the inner temperature and humidity through sensors.

The utility model discloses a standby power type air supply long pipe respirator which comprises a respirator main machine and an air inlet chamber, the air inlet chamber is fixedly assembled at the upper right corner in the respirator main machine, a processing chamber is fixedly assembled at the lower left corner in the respirator main machine, and two sets of parallel air inlets are formed in the left side of the outer wall of the processing chamber. A group of negative pressure fans are fixed at the air inlets, a group of filter elements are fixedly clamped at the air inlets, and an automatic brushing mechanism used for cleaning the filter elements to prevent blockage from affecting breathing is arranged in the treatment chamber. According to the standby power type air supply long pipe respirator, by arranging the automatic cleaning and brushing mechanism, particulate matter is prevented from being attached into the filter elements to affect the air flow, it is guaranteed that one of the two sets of negative pressure fans can work smoothly when the respirator is used, and even if one set of filter elements is blocked, the other set of filter elements are not affected to be used; the influence of the blockage phenomenon in the working process on breathing safety is prevented, and the problem of blockage of the filter element is solved.

The utility model provides a convex ball type smoke filtering layer, which comprises a shell and a filter element, the shell is of a spherical crown-shaped structure, the filter element comprises a wave-shaped folded filter membrane, the folded filter membrane is of an arc-shaped annular structure, and elastic sealants are arranged on the inner ring of the folded filter membrane and between the folded filter membrane and the shell. The smoke filtering layer is in a convex spherical shape and is used in the canister, the canister is used in cooperation with the mask, and toxic and harmful aerosol, bacterial viruses and the like can be effectively filtered out.

The utility model discloses a portable light negative pressure rigid-flexible composite isolation hood, which relates to the technical field of medical protection equipment, and comprises a hood body provided with an exhaust port and a one-way air inlet valve; the neck sealing air bag is connected to the bottom edge of the hood body in a surrounding manner; the ventilation filtering system is communicated with the exhaust port through an exhaust pipe; when the isolation hood is used, the neck sealing air bag is inflated, so that the neck sealing air bag is sealed on the neck of a user, and the ventilation filtering system sucks air in the sealing cavity, so that a negative pressure environment is formed in the hood body. When a user wears the isolation hood on the head, the ventilation filtering system is started to work, air in the hood body can be sucked, then a negative pressure environment is formed in the hood body, meanwhile, the ventilation filtering system can effectively filter and purify air in the hood body, and therefore the ventilation filtering system can effectively filter and purify the air in the hood body. Spreading of viruses and bacteria is prevented, and aerosol carrying pathogens is prevented from diffusing.

The invention discloses multifunctional coal mine personal protection equipment, which belongs to the technical field of coal mine personal protection and comprises a helmet, a head cover and a backpack. A communication base is fixedly mounted on the helmet, and a sensor group and a lighting assembly are mounted on the communication base; the head cover is fixedly installed on the helmet, the face of a person can be located in a sealed space through the head cover, and full face protection is achieved. Compared with the prior art, comprehensive face protection can be achieved through the helmet and the head cover, it is guaranteed that a user can be fully protected in various environments, cleanliness of the face of a worker can be guaranteed, and the working comfort of the worker is improved; clean air at a proper temperature can be continuously provided for the inside of the helmet and the head cover through the temperature adjusting mechanism and the canister, and the air in the helmet and the head cover continuously flows, so that the purity of the air breathed by a worker is ensured, the worker can breathe more comfortably and naturally during working, the stuffiness feeling of the worker during working is greatly reduced, and the wearing comfort is improved.

A filtering facepiece respirator is provided. The filtering facepiece respirator includes a facemask adapted to fit over the nose and mouth of a wearer, where the facemask comprises a mask body containing a filtering structure. A harness is coupled to the mask body for securing the facemask on the face of the wearer, and a mechanical valve is coupled to a portion of the mask body proximate the wearer's mouth. The valve may be adjusted between a first mode of operation and a second mode of operation, where in the first mode of operation is permitted to flow through the valve on exhalation but not on inhalation and in the second mode of operation air is obstructed from flowing through the valve on exhalation and inhalation. There is an optional third mode of operation where air is permitted to flow through the valve on inhalation and exhalation.

Filter media and filters, such as air filters, residential air filters, commercial air filters, face masks, gas turbine and compressor air intake filters, panel filters, and the like, are provided that comprise a plurality of fibers with a silicone-based coating. The silicone-based coating comprises a silicone compound at least about two percent by weight of the coating. The silicone-based coating may include a reactive silicone macroemulsion and a surfactant. The silicone-based coating increases the efficiency of the filter at capturing contaminants, particularly contaminants in the E2 and E3 particle group range, without compromising other important characteristics of the filters, such as cost, longevity, dust holding capacity, and the pressure drop or air permeability of the filter.

An antimicrobial face mask that includes a triboelectric nanogenerator (TENG) membrane interior portion. The face mask also includes one or more antimicrobial substances. In some examples, the face mask includes both copper and silver, each of which has antimicrobial properties and together have a greater antimicrobial effect than each of them individually. The face mask improves upon existing personal protective equipment (PPE) face masks to reduce transmission and infection from microbial pathogens, including SARS-CoV-2, its variants, other viruses and various forms of bacteria.

One variation of a respirator apparatus includes a shield center section, a filter assembly, and a gasket. The shield center section defines: a transparent center region configured to align with a nose and a mouth of a user; and a filter window laterally offset from the transparent center region. The filter assembly includes a filter media and a seal: encircling a perimeter of the filter media; and defining a center groove configured to mate with a rim of the filter window to transiently retain the filter assembly within the filter window. The gasket is arranged on a rear face of the lens center section and configured to: seal against a face of the user; and locate the lens center section and the filter assembly offset from the face of the user to form an airflow channel to direct airflow across a glabrous cheek region of the user.

The present invention relates, in general terms, to a face mask. The present invention also relates, in general terms, to composite material, iron-iron oxide compositions and their methods of fabrication thereof. In particular, the iron-iron oxide composition comprises a cashew testa extract and iron particles and / or oxide core-shell particles. The iron-iron oxide composition can be used as an anti-microbial composition.

The utility model discloses an isolated type circulating respiratory protection device. The protection device comprises a protection cover, a breathing apparatus arranged in the protection cover, an air bag arranged outside the protection cover and communicated with the breathing apparatus, a carbon dioxide absorbent bin arranged between the air bag and the breathing apparatus, and an oxygen supply device arranged outside the protection cover and communicated with the air bag. The protective cover is a hollow protective cover capable of at least containing the head, an opening for at least the head to stretch in is formed in the protective cover, and a tightening device capable of tightening the opening is arranged at the opening. The oxygen supply device comprises an oxygen bottle and a trigger switch for controlling the oxygen bottle to supply air into the air bag.