1548results about "Respiratory apparatus" patented technology

The invention discloses a self-adaptive noise reduction method for a positive pressure type air respirator based on airflow spectrum characteristics, and relates to the technical field of positive pressure type air respirators.The self-adaptive noise reduction method comprises the steps that a respirator air path pressure signal and an environment noise signal are synchronously collected through an airflow sensor and a microphone array; performing time-frequency analysis on the collected signals, and extracting airflow spectrum features; and establishing a mapping relation between the working state of the breathing machine and the noise spectrum based on the historical record according to the mapping relation between the working state of the breathing machine and the noise spectrum. Through real-time acquisition and analysis of airflow frequency spectrum characteristics, accurate identification of useful airflow signals and environmental noise signals, dynamic adjustment of noise reduction parameters, effective suppression of high-frequency noise and low-frequency vibration, and improvement of noise reduction effect, compared with a traditional fixed frequency band filtering or passive sound insulation material, the method can better cope with a non-stationary noise environment, and has good application prospects. The noise reduction strategy is adjusted in real time, clear auditory information is provided in a complex noise environment, and therefore the auditory perception ability of firemen is improved.

The present application provides a system for coupling a harness strap (302) to a respirator mask, comprising a first coupling element (304) attachable to a harness strap for securing a respirator mask to a wearer: and a second coupling element (326) fixed with respect to the respirator mask and configured to releasably engage with the first coupling element to couple the harness strap to the mask, wherein the first coupling element is rotatable about an axis of the second coupling element and said rotation is limited by a stop arrangement (328).

A wearable device for comprehensive bio-monitoring of physiologic metrics to determine metabolic, pulmonary and cardiac function and oxygen saturation measurements from breathing mask apparatuses. The device non-invasively monitors the physiologic profile of the subject, and is capable of detecting physiologic changes, predicting onset of symptoms, and alerting the wearer or another person or system. In some embodiments, the device comprises both a wearable sensor suite and a portable gas composition and flow analysis system. In preferred embodiments, it comprises a miniaturized non-invasive sensor suite for detecting physiologic changes to detect dangerous breathing or other health conditions. The acquired physiologic profile is used to generate alarms or warnings based on detectable physiological changes, to adjust gas delivery to the subject, alter mission profiles, or to transfer control of the craft or other duties away from a debilitated subject. The device is compact, portable, vehicle independent and non-encumbering to the subject.

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 cooling element system (100), for use within a cooling device (590) of a closed-circuit respirator (691), includes a plurality of cooling elements and a collar (120). The cooling elements each have an element housing (112), having a liquid-tight closure (114), filled or fillable with a coolant. The element housings allow for a common mounting arrangement of the number of cooling elements within the cooling device. The collar encloses the cooling elements in the common mounting arrangement and has a carrying area (122), which is configured to carry the number of cooling elements in the common mounting arrangement at the carrying area. A removal of the number of cooling elements, in the common mounting arrangement, from the cooling device and an insertion into the cooling device, are possible by means of the carrying area.

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 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.

The invention discloses personal life support equipment in a high-altitude environment and a cooperative control method thereof, and relates to the technical field of personal life support equipment, and the equipment comprises a respiration sensor which is arranged on a mask and is used for detecting respiration frequency and phase; the blood oxygen and heart rate sensor is worn on the wrist of the user and used for detecting the blood oxygen saturation degree and the heart rate; the body temperature sensor is attached to the chest of the user and used for detecting the core body temperature; the automatic oxygen supply device is used for providing oxygen; the intelligent heating device comprises partition heating pieces attached to the chest and the four limbs of the user and is used for partition heating; the microcontroller unit is used for formulating an optimal life support strategy according to the sensor data and intelligently and cooperatively controlling the working states of the automatic oxygen supply device and the automatic heating device according to the optimal life support strategy; the sensor data comprises respiratory frequency and phase, oxyhemoglobin saturation, heart rate and core body temperature, and dynamic oxygen supply and body temperature adjustment can be cooperatively controlled.

The present disclosure provides embodiments of a personal protective device which include one or more sensors. The personal protective device is in the form factor of a filtered mask to cover the nose and the mouth of the subject when in use. One or more sensor modules are connected to the mask for detecting one or more parameters related to an inhalation and or exhalation of the subject. The mask is held onto the face of the subject by one or more support members.

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.

The utility model provides a positive pressure type air respirator wearing device. The positive pressure type air respirator wearing device comprises a back plate, an annular paw, a back supporting cushion and a waistband rotating assembly. Wherein the annular paw and the back supporting pad are fixed to the front side and the rear side of the back plate respectively, and the waistband rotating assemblies are installed on the left side and the right side of the back plate through hinges respectively and connected with the second buckle through the waistband. Gas cylinders of different sizes are fixed through cooperation of the first adjusting positioning holes, the annular paws, the limiting belts and the first buckles, and the problem that stability is poor due to shaking of the gas cylinders is solved. Meanwhile, by adopting a structure installation mode of combining double-side back supporting cushions conforming to the curve shape of the waist and back of the human body with flexible damping balls and second adjusting positioning holes, the extrusion and impact of a positive pressure type air respirator on the back of the human body are avoided, meanwhile, the use of people with different heights is met, the physical output of rescue workers is effectively reduced, and the rescue efficiency is improved. And the use requirements of rescue workers are met.

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.

There is disclosed a first stage pressure reducer for a breathing apparatus comprising: a body defining a cavity, the cavity having a higher-pressure region configured to receive higher-pressure gas from a gas source, a lower-pressure region configured to receive lower-pressure gas from the higher-pressure region, and a piston bore, the piston bore connecting the higher-pressure region and the lower-pressure region; a piston configured to move reciprocally through the piston bore, and further configured to transfer gas from the higher-pressure region to the lower-pressure region; a bushing disposed coaxially with the piston bore and around at least a portion of the piston, the bushing arranged to engage the piston and inhibit contact between the piston and the piston bore; and a sealing element arranged between the higher-pressure region and the bushing, the sealing element configured to isolate the bushing from the higher-pressure region. Also disclosed is a self-contained breathing apparatus comprising a first stage pressure reducer.

A wearable air purifier that includes headgear for mounting on a wearer's head, a fan assembly operable to generate a filtered airflow, and a nozzle for directing airflow from the fan assembly, the nozzle being couplable to the headgear at opposite sides of the wearer's head to extend across a front of the wearer's head. The nozzle includes side portions located on respective sides of the central portion between the central portion and the respective point of coupling of the nozzle to the headgear, the side portions being more flexible than the central portion.

Disclosed are methods and / or a system of incident based camera device activation in a safety system of a structure having a fixed piping system implemented therein to supply breathable air thereacross. In accordance therewith, one or more sensor(s) associated with one or more component(s) of the safety system is integrated with a computing platform executing on a data processing device. Based on the integration of the one or more sensor(s) with the computing platform, one or more environmental parameter(s) of the one or more component(s) of the safety system is sensed. One or more camera device(s) in a vicinity of and / or on the one or more component(s) of the safety system is automatically activated based on determining, from the sensing, occurrence of an incident.

Methods, apparatuses, and systems for mechanically releasing a predetermined amount of supplemental oxygen to a user via a mechanical initiator are disclosed with the release of the amount of supplemental oxygen based on and in response to the combined factors of a user's determined oxygen consumption based on sensing a user's inhalation combined with determining the ambient pressure in the area of the user.

The utility model discloses an intelligent information display device based on an air respirator, which is connected with a three-way joint, and the three-way joint is respectively connected with a mechanical pressure gauge and the air respirator; the information intelligent display device comprises a display device interface, one end of the display device interface is connected with the three-way connector, and the other end is provided with a pressure sensor which is electrically connected with a control module. Based on the intelligent information display device of the air respirator, the effective numerical value of the air volume is visually displayed, in the on-site rescue process, rescue workers can clearly know the remaining use time of the air expiration volume, on-site commanders can know the use condition of the air respirator of the rescue workers in real time, rescue task work can be conveniently carried out, and the work efficiency is improved. And the safety and the operation efficiency of the rescue team members during the execution of the rescue task are improved.

A hardhat having a brim of variable elongation circumscribing its base is oriented such that the most elongate brim portion is associated with the back of a user's head. A source of supplied air is brought into an area proximate the back area, and an air conduit directs the air toward an area or areas of the hardhat having a less elongate brim.

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.

There is disclosed a diaphragm for a lung demand regulator device, the diaphragm comprising: a first face and a second face, the diaphragm being configured to move responsive to a pressure differential between the first and second faces; an opening extending between the first face and second face; and a non-return valve configured to control gas flow through the opening; wherein the non-return valve is biased to prevent all flow through the opening whilst the pressure differential is below a threshold and permit flow from the first face to the second face whilst the pressure differential is above a threshold. Also disclosed is a lung demand regulator device comprising a diaphragm and a breathing apparatus.

A system includes a collecting unit for collecting a current oxygen pressure value of the oxygen bottles, an estimating unit for estimating an average degradation model, an adapting unit for adapting the average degradation model, a generating unit for generating several future degradation scenarios, an estimating unit for estimating, for each of the future degradation scenarios, a remaining useful lifetime, and for generating a remaining useful lifetimes probability distribution, a transmitting unit for transmitting an end-of-lifetime alert signal to an alert device if a remaining useful lifetime of an oxygen bottle is below a predetermined alert threshold.

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.

Introduced here is a face mask system having a mask enclosure that contains, or otherwise directly supports, an automated liquid-droplet dispensing mechanism (ADM) for humidification. In operation, the enclosure and ADM are compact and lightweight so that when worn by a user can be supported entirely by the user's head and neck. The enclosure can be comprised of one or more layers of breathable fabric adapted to flexibly conform to the face of a user when worn and form a cavity that is adjacent to the user's nostrils and mouth. The ADM can be comprised of a reservoir in which liquid is stored, a respiratory cycle detector, a timer and controller, and a droplet dispenser that controllably dispenses droplets of the liquid from the reservoir into the cavity for inhalation by the user.

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.

A disposal mask (1, 2) is characterized by having a mask main body part (10, 40) and an ear hooking part (20, 50) to be hooked around the ears of a wearer, wherein the mask main body part (10, 40) has a filter member (11, 41) that collects at least one of viral droplets and bacterial droplets, and non-woven fabric (12, 42) which is disposed on the skin surface side of the filter member (11, 41) and has an endothermic agent (30) placed therein.

A personal protective equipment (PPE) fit testing system is presented that includes a scanning device configured to capture a first scan data of a user wearing an article of PPE. The system also includes a fit test module configured to: detect, using a PPE detector, a model of the article of PPE, retrieve a second scan data of the user without the article of PPE, compare the first and second scan data, using a comparison module, and based on the comparison, generate a fit test result. The system also includes a communication component configured to communicate the generated fit test result to a device with a display.

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.