42 results about "Expiratory valve" patented technology

The utility model belongs to the technical field of emergency rescue, and particularly relates to an air respirator mask and a system. The air respirator mask comprises a mask body and a transparent face mirror, a mouth and nose mask is arranged in an inner cavity of the mask body, an air circulation area is formed between the outer portion of the mouth and nose mask and the inner side of the face mirror, two air suction valve plates are symmetrically arranged on the mouth and nose mask, and a double-mouth breathing seat is arranged on the face mirror. The double-port breathing seat is provided with an inspiration valve connector and an exhalation valve connector, the inspiration valve connector is used for being connected with an air respirator air bottle and an air supply valve of the air respirator air bottle, and the inspiration valve connector is used for being connected with an exhalation valve seat which can be freely inserted and detached. By designing the double-port breathing seat and the exhalation valve seat capable of being freely inserted and detached, when gas in air exhalation is completely consumed, on the premise that an air respirator mask and an air supply valve of the air respirator mask are not detached, the exhalation valve seat is pulled out, and a chemical oxygen respirator is inserted into an exhalation valve interface, so that closed-loop type oxygen support can be provided for a wearer; and the respiratory protection time of rescuers is prolonged.

The invention discloses an electric turbine anaesthesia machine with an automatic air supply function of an air storage bag and a method, and the anaesthesia machine comprises a turbine which is used as an active inspiration air source; a detachable air storage bag; an air supply one-way valve; the breathing circuit is connected between the turbine outlet and the patient end and comprises an inspiration branch provided with a flow diaphragm, an expiration branch provided with an expiration EV valve and an expiration flow diaphragm, and a patient breathing circuit tank assembly containing the air storage bag and the soda lime tank; a plurality of sensors; the control unit is electrically connected with and controls the turbine and the expiration EV valve, receives signals of the sensor and is used for achieving different breathing ventilation modes. According to the anesthesia machine and method, turbine driving is adopted, the tidal volume adjusting range is wide, and physical limitation of a folding bag is avoided; the air storage bag is externally arranged and replaceable, so that cleaning and maintenance are facilitated; a one-way valve automatic gas supply mechanism ensures continuous and stable gas supply; the device supports various breathing modes, and is suitable for various scenes such as anesthesia maintenance, postoperative awakening, oxygen therapy and the like.

An exhalation valve for a respiratory device comprises a valve housing (12) with a fluid line (20, 22) and with a valve diaphragm (14) held by a holding portion (42) of the valve housing (12), wherein the fluid line (20, 22) has a first line portion (20) with a valve seat (26) and a second line portion (22) which differs from the first line portion (20), a valve body (36) formed with the involvement of the valve diaphragm (14) rests on the valve seat (26) in a closed position of the diaphragm valve (10) and interrupts a flow path between the first line portion (20) and the second line portion (22), the valve body (36) of the valve diaphragm (14) can be lifted from the valve seat (26) along an extended imaginary virtual lifting path which serves as a virtual reference path (Z), and at least one region of the valve housing (12) is designed as a thermal deformation region (78, 80, 82, 84) made of a polymer which has a dimensional stability temperature of less than 115°C, measured according to ASTM D648 at a test load of 66 psi, and / or a dimensional stability temperature of less than 100°C, measured according to ASTM D648 at a test load of 264 psi, the thermal deformation region (78, 80, 82, 84) being a shell-shaped region with a wall thickness of less than 0.9 mm.

The application discloses a kind of methods for predicting dust miner's breath flow based on random forest algorithm, including dust miner's breath flow prediction system, the dust miner's breath flow prediction system is by miner's breath characteristic parameter monitoring component, respirator and algorithm prediction module Composition, further include: the miner's breath characteristic parameter monitoring component includes heart rate detector, blood oxygen detection device, temperature tester and portable individual breath monitor, the respirator is viscoelastic silica gel half mask, the respirator is equipped with exhalation valve, the half mask inside and outside both sides are evenly distributed with pressure sensor, the algorithm prediction module is by information receiving unit, central processing unit and information output unit Composition, miner's breath characteristic parameter real-time upload to information receiving unit, and import central processing unit and algorithm prediction are carried out data processing after, and output by information output unit, the method prediction model of the present application is robust, and prediction accuracy is high.

A breathing apparatus includes a tank containing pressurized breathing gas, a regulator having an inlet connected to the tank, an outlet for providing breathing gas to a user, and a valve configured for controlling a flow of breathing gas between the inlet and the outlet. A facepiece includes a first port for connecting with the outlet of the regulator, a second port adapted to be connected to an air purifying system, and an exhalation valve. A pneumatic pressure adjustment assembly is in operative connection with the exhalation valve, and has a first pneumatic connection in operative connection with a second pneumatic connection in the regulator. The pneumatic pressure adjustment assembly is operable to adjust the internal facepiece pressure for opening the exhalation valve based on whether breathing gas is delivered to the pneumatic pressure adjustment assembly. An alignment mechanism is provided for aligning the regulator with the facepiece.

A kind of breathing valve for facilitating online monitoring, including valve body, setting and exhalation valve assembly and inhalation valve assembly in valve body, the exhalation valve assembly and inhalation valve assembly all include valve seat, valve disc and guide rod, the valve body top is fixedly connected with valve cover, the inside of the valve cover is equipped with the movement channel for accommodating guide rod lifting, the top of the valve cover is equipped with proximity switch sensor, the proximity switch sensor is electrically connected with external monitoring center by electric connection line or wireless connection, the guide rod is close to or away from proximity switch sensor by lifting action in movement channel, the proximity switch sensor sends guide rod distance change to monitoring center after sensing.

An expiratory valve for a ventilation device comprises a valve housing (12) with a fluid line (20, 22) and with a valve diaphragm (14) held by a mounting section (42) of the valve housing (12), wherein the fluid line (20, 22) has a first line section (20) with a valve seat (26) and a second line section (22) different from the first line section (20), wherein a valve body (36) formed with participation of the valve diaphragm (14) rests on the valve seat (26) in a closed position of the diaphragm valve (10) and interrupts a flow path between the first line section (20) and the second line section (22), wherein the valve body (36) of the valve diaphragm (14) is liftable from the valve seat (26) along an extended virtual lift-off path serving as a virtual reference path (Z), wherein at least one region of the valve body (12) is formed as a heat deformation region (78, 80, 82, 84) of a polymer having a shape stability temperature of less than 115 °C, measured according to ASTM D648 at a test load of 66 psi, or / and of less than 100 °C, measured according to ASTM D648 at a test load of 264 psi, and wherein the heat deformation region (78, 80, 82, 84) is a shell-shaped region with a wall thickness of less than 0.9 mm.

The utility model discloses a single-tank half mask capable of checking air tightness. The single-tank half mask comprises a mask body, a mask protecting soft body, a filter connecting seat, an exhalation valve, a bandage, an air tightness checking assembly and a protecting cover plate, the mask body is a shell with a cavity formed in the rear side, and the cavity is matched with the outline of the lower half portion of the face of the human body. The edge of the outline of the rear side of the cover body is hermetically connected with a surface protecting soft body; the protective face soft body is of a ring-shaped soft body structure with a cavity in the middle. An air inlet and an air outlet are formed in the front side of the cover body; a filter connecting seat is arranged at the air inlet of the mask body, and the filter is detachably connected with the filter connecting seat; an exhalation valve is arranged at the air outlet of the mask body; and the air tightness inspection assembly is arranged in the concave cavity of the cover body and is positioned on the inner side of the filter connecting seat. The single-tank half mask capable of detecting air tightness is simple and reasonable in structural design, stable and firm in connection and excellent in air tightness, and has a good protection effect; the air tightness of the mask can be quickly and effectively checked.

The invention discloses an aerosol inhalation device for children internal medicine, and belongs to the technical field of aerosol administration. An atomization inhalation device for the children internal medicine department comprises an inhalation device shell, an atomization mask and interactive VR glasses, and a pressure sensor and an inertia testing unit are installed at the front end of a one-way exhalation valve; the interactive VR glasses comprise a core chip, and the core chip, the pressure sensor and the inertia test unit are electrically connected with the interactive VR glasses. The problems that when an existing medicine atomization inhalation device is used for the children internal medicine department, time is long, noise is large, children do not cooperate with the device, and more atomized liquid medicine is left are solved, data information of the pressure change speed in the mask is measured in real time, and the core chip judges the expiratory flow speed direction of a child patient according to the data information; therefore, intelligent breathing synchronization, precise atomization control and synchronous breathing information can be combined, the data information picture of the three-dimensional display screen is changed, and the treatment compliance of children is improved.

A respiration device is for positive pressure ventilation and continuous positive airway pressure treatment for neonatal resuscitation. The respiration device includes a body part with a) a breathing gas inlet fluidly couplable to a breathing gas supply, b) a breathing gas outlet in fluid communication with the breathing gas inlet and fluidly couplable to a patient interface, c) a first outflow port, and d) a second outflow port for releasing breathing gas from the body part, the second outflow port being fluidly couplable to one or both an expiration valve and an expiratory branch of a ventilation machine; and a continuous positive airway pressure, CPAP, generator fluidly coupled between the breathing gas inlet and the breathing gas outlet to generate a positive end-expiratory pressure for CPAP treatment. The respiration device is operable in a CPAP mode for CPAP treatment and a positive pressure ventilation, PPV, mode for PPV treatment.

A breathing gas supply system, potentially for combat aircraft, operative to decrease hypoxia and asynchronous breathing and to conserve breathing gases. An input valve selectively permits breathing gas to fill a flexible gas reservoir through a fluidic connector. Breathing gas can be maintained at an elevated pressure. The fluidic connector delivers gas to an output interface, such as an oxygen mask. An inspiratory valve is permitted to open when inspiration is sensed by an inspiratory sensor, and an expiratory valve is permitted to open when expiration is sensed by an expiratory sensor. The inspiratory and expiratory sensors can be separate or embodied as an inspiratory-expiratory sensor. A sensor reservoir fluidically open to a volume between the output interface and the face of the user can expand or compress to indicate inspiration or expiration. The inspiratory and expiratory valves can be electromagnetically operated.

The utility model relates to a double-channel gas-defense and dust-proof mask, and belongs to the technical field of protective equipment. The double-channel gas-defense and dust-proof mask comprises a mask body, a filter box, an exhalation cover, an inspiration valve element and an exhalation valve element. Filter boxes are mounted on the two sides of the mask body through clamping structures; the mask is characterized in that the mask body on the inner side of the filter box is provided with an air suction valve core through a ventilation structure; an exhalation valve core is arranged at the lower end of the mask body through a ventilation structure; and an exhalation cover is mounted on the mask body on the outer side of the exhalation valve core through a clamping structure. The double-channel gas-defense and dust-proof mask is compact in structure and ingenious in design, solves the problems that an existing dust-proof mask is prone to damage, unsmooth in circulation and prone to liquid collection inside, and meets the use requirements of people.

A respiratory delivery care system is characterized by comprising: a mechanical flow indicator movable in response to a user's inhalation and / or exhalation, and an electronic indicator operable in response to an electronic signal transmitted in response to the movement of the flow indicator. The flow indicator is an inspiratory valve, an expiratory valve, or an axially movable actuator. The delivery device includes a retaining chamber wound with a coil and at least one magnet disposed at the center of the coil, the at least one magnet being reciprocating to sense current and store the current in a supercapacitor connected to the circuitry and the electronic indicator. A respiratory delivery device is characterized by comprising: a flow indicator configured to transmit a first input signal, a metered-dose inhaler in communication with the retaining chamber, a lever for actuating the inhaler and having a sensor to transmit a second input signal, and a processor for receiving these signals to generate an output signal.

The invention relates to the field of medical equipment gas control, in particular to an anesthesia machine electric control APL valve system assembly which comprises an electric control APL valve electric control module, an APL needle valve module, an emergency fresh gas control module and an exhalation valve module. The emergency fresh gas control module provides a stable gas source for the APL needle valve module, the APL needle valve module manually adjusts gas when the APL valve electric control module breaks down, the APL valve electric control module can process a high-pressure gas source, the exhalation valve module receives a pressure signal to adjust exhalation / inspiration pressure, and the APL valve electric control module can process the high-pressure gas source. The system can realize pressure control of the breathing circuit through an electric control automatic mode or a manual emergency mode. The technical effects that breathing loop pressure control can be flexibly achieved, manual emergency adjustment can be achieved when the electric control module breaks down, and it is guaranteed that gas control of the anesthesia machine is stable and reliable are achieved.

The utility model relates to the technical field of medical instruments, in particular to a noise reduction exhalation valve assembly and an anaesthesia machine, the noise reduction exhalation valve assembly comprises an exhalation valve core, a flap valve core and a flap piece, an exhalation valve airway is arranged on the exhalation valve core, and the flap piece moves along with the flap valve core; when the valve piece is attached to the exhalation valve airway, the exhalation valve airway is closed, and when the valve piece leaves the exhalation valve airway, the exhalation valve airway is opened. The flap valve element is provided with a flange in the circumferential direction, the flap piece is completely attached to the bottom face of the flange, and the flange drives the flap piece to move along with the flap valve element, so that vibration of the flap piece is avoided, and noise is reduced. The interior of the exhalation valve airway is divided into a plurality of flow channels used for flow division, the impact of airflow on the noise reduction exhalation valve assembly is reduced, and therefore noise is reduced.

An oxygen delivery apparatus operable to provide oxygen to a user wherein the invention includes a low volume mask body sealably secured over a user's mouth and nose. A gas source is operably coupled to the mask body with a first delivery tube. The first delivery tube has a portion thereof disposed within a second delivery tube. The delivery tubes are operably coupled to an inspiratory valve distal to the gas source. The inspiratory valve is operably coupled to the mask body providing gas flow thereinto in response to a user's inhalation. The mask includes a perimeter seal and employs a strap configuration to sealably secure the mask body to the face of the user. Integrally formed into the mask body are a plurality of expiratory valves. The expiratory valves are comprised of three layers and move between a closed position and an open position along the rearward perimeter edge.

The invention belongs to the technical field of breathing machines and anaesthesia machines, and relates to an inspiration time self-adaptive adjusting device and ventilation supporting equipment, and the inspiration time self-adaptive adjusting device comprises a monitoring judgment module which is used for monitoring gas pressure and flow speed signals in a breathing pipeline in real time, and judging whether a ventilation triggering type is autonomous triggering or machine triggering according to comparison between the gas pressure and a first threshold value; when autonomous triggering is judged and the gas flow rate is reduced to a second threshold value, a control signal is sent to the gas path control unit; otherwise, transferring to the data processing module; the data processing module is used for counting an autonomous triggering proportion within a set time length, taking the proportion as a dynamic adjusting parameter, calculating the inspiration time by combining the statistical magnitude and an ideal value of the inspiration time, and sending a control signal to the gas path control unit when the inspiration time is up; and the control module is used for converting the exhalation valve from the closed state to the open state according to the received control signal so as to stop the inspiration phase and enter the expiration phase.

PEEP-valves configured to be placed inline with the exhalation path of a ventilator and ahead of the exhalation valve. The PEEP-valve functions as a resistor that can provide a higher PEEP value for any given PIP, lung compliance, and respiratory rate combination compared to a standard PIP to PEEP ratio.

There is provided a respiratory protection device comprising a mask body defining a breathable air zone for a wearer and having a front cover; an exhale valve in fluid communication with the breathable air zone; and a seal check mechanism disposed in the front cover, where the seal check mechanism comprises a button associated with a flap such that, when actuated, the flap biases the exhale valve in a closed position. There is provided in some embodiments a plane of the button intersecting with a plane of the exhale valve. There is also provided in some embodiments the button and the plunger being a monolithic part.

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.

The invention discloses a pressurized plateau breathing system and a device thereof. The pressurized plateau breathing system comprises a breathing unit, an air pump unit and an expiration unit. The breathing unit is in the form of a mask / mask, a helmet, a sleeping bag or a cabin, and the internal pressure is kept at 0.8-1.0 atm when the breathing unit is used; the working pressure of the air pump unit is 20-50 kPa, and the mask type minimum air supply flow is 120 L / min (1 atm conversion); the expiration unit is differentially designed according to the form of the breathing unit, namely, the mask / helmet adopts a nose suction and mouth expiration mode, and exhalation is performed through a mouth one-way expiration valve; the sleeping bag / cabin adopts a pressure relief pipe exhaust mode, and the internal pressure is controlled through an adjustable pressure relief valve. The oxygen partial pressure is increased through physical pressurization, dependence on an oxygen source is avoided, and sustainable use can be achieved; the unified pressurization principle covers multiple scene requirements of dynamic, sleep, fixation and the like; pressure parameters are appropriate, flow standard is sufficient, the structure is simple and reliable, and all-weather breathing improvement of plateau crowds is achieved.

The embodiment of the present disclosure provides a method, a control device and a computer readable storage medium for adjusting a basic flow under a high level PEEP, wherein the method comprises calculating an estimated value of a current flow based on a prior estimation model of the basic flow; measuring a current flow value; data fusion is performed on the estimated value of the current flow and the measured current flow value to obtain an optimal estimated value of the flow; and adjusting the basic flow according to the deviation between the optimal estimated value of the flow and a set flow value. The embodiment of the present disclosure considers the noise caused by the oscillation of the exhalation valve diaphragm under the high level PEEP in the working process of the breathing machine, and corrects the errors in the model and the calculation in real time according to the environmental factors, so as to ensure the rapidity and stability of the data fusion process, and improve the control precision and accuracy of the basic flow rate.

An exhalation valve includes a body and a cantilevered diaphragm having a clamped region and a valve face. The diaphragm's clamped region is clamped at the valve's body but the valve face deforms in response to the exhalation pressure. A valve seat on the valve body faces the valve face. The vanes cause a pressure field that results from the exhalation pressure. Its average pressure gradient points toward the valve seat and the region of the valve face that defines the longest moment arm. Normally, the valve face contacts the valve seat and closes the exhalation valve. In response to exhalation- induced torque above the threshold, it lifts off the valve seat and opens the exhalation valve.

An exhalation valve includes a body and a cantilevered diaphragm having a clamped region and a valve face. The diaphragm's clamped region is clamped at the valve's body but the valve face deforms in response to the exhalation pressure. A valve seat on the valve body faces the valve face. The vanes cause a pressure field that results from the exhalation pressure. Its average pressure gradient points toward the valve seat and the region of the valve face that defines the longest moment arm. Normally, the valve face contacts the valve seat and closes the exhalation valve. In response to exhalation-induced torque above the threshold, it lifts off the valve seat and opens the exhalation valve.

This invention provides a water-collecting cup buffer and an exhalation valve, belonging to the field of medical device technology. It includes an airway connector with a water-collecting cup at its lower end, and a buffer installed between the airway connector and the water-collecting cup. This invention solves the problem that the commonly used method for clearing water accumulation in exhalation valves involves using a water-collecting cup, which is added to the air inlet of the exhalation valve to collect water in the exhalation branch and within the exhalation valve. However, adding a water-collecting cup creates a cavity in the airway. When a steady airflow passes through the connection between the water-collecting cup and the airway, turbulence occurs. This turbulent airflow, when passing through the exhalation valve, causes abnormal noise on the PEEP (Positive End-Expiratory Pressure) diaphragm. Furthermore, as the airflow pressure and flow rate increase, the degree of turbulence intensifies, and the abnormal noise becomes more pronounced.

An exhalation valve and a ventilator. The exhalation valve comprises a housing, a valve body, a diaphragm, and an adjustment assembly. The valve body is mounted in the housing, and a mounting gap is present between an air outlet end of the valve body and a first end of the housing. The diaphragm and the adjustment assembly are sequentially arranged in the mounting gap. A first side surface of the diaphragm is connected to the air outlet end of the valve body, and a second side surface of the diaphragm is in contact with the adjustment assembly. The adjustment assembly is configured for adjusting the diaphragm, so that the first side surface of the diaphragm is kept parallel to an end surface of the air outlet end of the valve body. The posture of the diaphragm can be adjusted by means of the adjustment assembly. Force from any direction keeps the first side surface of the diaphragm parallel to the end surface of the air outlet end of the valve body, which is conducive to stabilizing airflow, so that airflow does not affect the diaphragm, preventing the diaphragm from fluttering and resonating, which could otherwise result in a whistling sound and cooperatively cause flow fluctuations in the ventilator, leading to discomfort for the patient.

1. The name of the design product: full face mask breathing valve and drinking device. 2. The use of the design product: used as the breathing valve and drinking device of full face mask. 3. The design points of the design product: in shape. 4. The picture or photo that can best show the design points: perspective view. 5. Other circumstances that need to be explained: this appearance patent application is a partial appearance patent application, the area other than the gray coverage in the picture or photo of the appearance design is the protection range of the partial appearance design.

This invention discloses a nasal breathing device, comprising: a conduit component having an oxygen supply channel internally configured therein, the conduit component having two radially protruding air supply connectors, both of which are connected to the oxygen supply channel; oxygen hoses, the proximal ends of two oxygen hoses being connected to the two ends of the conduit component respectively, and the distal ends of the oxygen hoses being connected to an air source; nasal plugs, two nasal plugs being attached to the two air supply connectors respectively; the nasal plugs having sidewalls and bottom walls defining an air outlet and an air supply cavity, wherein after the nasal plugs are inserted into the nostrils, the air supply outlet faces the nostrils, the bottom wall faces away from the nostrils, and an attachment sleeve is configured on the bottom wall, the attachment sleeve being fitted onto the air supply connectors; an inhalation valve is configured at the junction area between the nasal plugs and the air supply connectors, the inhalation valve allowing gas in the oxygen supply channel to flow into the air cavity of the nasal plug while restricting gas in the air cavity from flowing back into the oxygen supply channel; an exhalation valve is configured on the bottom wall of the nasal plug, the exhalation valve allowing gas in the air cavity to flow to the outside while restricting outside gas from flowing into the air cavity.

The application discloses a noninvasive positive pressure ventilation mask capable of intelligently adjusting exhalation volume, which comprises a mask body, an inhalation channel and an exhalation channel are arranged on the mask body, an inhalation valve is connected to the inhalation channel, and an exhalation valve is connected to the exhalation channel; a carbon dioxide collecting pipe for extracting gas in the mask body is further arranged on the mask body, a carbon dioxide detecting device for detecting the carbon dioxide concentration of the gas in the mask body is connected to the tail end of the carbon dioxide collecting pipe, and a control unit for increasing the opening degree of the exhalation valve when the detected carbon dioxide concentration is greater than a preset carbon dioxide concentration threshold value is connected to the carbon dioxide detecting device. The noninvasive positive pressure ventilation mask disclosed by the application can monitor the carbon dioxide concentration of the gas in the mask body in real time, and the control unit adjusts the opening degree of the exhalation valve according to the carbon dioxide concentration of the gas in the mask body, so as to adjust the carbon dioxide concentration of the gas in the mask body in real time.

This utility model discloses an exhalation valve assembly for a protective face mask, including an exhalation valve base connected to the face mask. The exhalation valve base contains, from the inside out, a secondary valve plate, an exhalation valve protective seat, a primary valve plate, and an exhalation valve cover. The exhalation valve base has a cavity, and the inner wall of the cavity is formed with an exhalation valve cover mounting step and an exhalation valve protective seat mounting step. The exhalation valve protective seat is fastened onto the exhalation valve protective seat mounting step. The primary valve plate is mounted on the exhalation valve protective seat. The exhalation valve cover is positioned on the exhalation valve cover mounting step and presses against the top surface of the exhalation valve protective seat. A locking component is formed on the side wall of the exhalation valve cover mounting step. This utility model achieves double barrier by setting a primary valve plate and a secondary valve plate inside the exhalation valve base, blocking particulate matter in the air, preventing toxic substances from entering the face mask, reducing the corrosion of internal components by toxic gases, and extending the service life of the internal components of the face mask.