84 results about "Expiratory valve" patented technology

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 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.

The utility model relates to the technical field of respirators, in particular to an outpatient respirator which comprises a mask, a breathing structure is arranged on the mask, the breathing structure comprises a connecting sleeve, the connecting sleeve is connected to the mask in an inserted mode, a connecting pipe is fixedly connected to the connecting sleeve, an exhalation valve is fixedly connected to the connecting pipe through a fixing structure, and the exhalation valve is fixedly connected to the mask. Four fixing strips are fixedly connected to the bottom end of the exhalation valve, a fixing ring is fixedly connected to the four fixing strips, a mounting ring is fixedly connected to the connecting pipe, four buckles are fixedly connected to the mounting ring, and the buckles are clamped with the fixing ring; the connecting pipe and the exhalation valve are rapidly fixed through the fixing structure, the connecting pipe is prevented from slipping off from the exhalation valve, and the medical auxiliary breathing effect is improved.

The invention belongs to the technical field of exhalation valves, and discloses an end-expiratory positive pressure exhalation valve which comprises a patch, an adjustable micro valve, a hole, a flow velocity sensor, a pressure sensor and a controller. An adjustable micro valve is arranged in the patch; a hole is formed in the adjustable micro valve; a controller is fixed at the left end of the adjustable micro valve; and a flow velocity sensor and a pressure sensor are fixed below the controller. The invention provides an airflow sensor and a controller, and when the airflow of a patient drops due to sleep apnea, the airflow sensor and the controller can automatically adjust, reduce the valve, increase the provided pressure and open the airway. When airflow is detected to be stable for a period of time, the valve is expanded, and the pressure is reduced to ensure comfort. The positive end-expiratory pressure device can provide adjustable and large positive end-expiratory pressure, and a treatment mode with high comfort and good compliance is provided for a patient.

Aspects and embodiments relate to a therapeutic gas delivery system coupling, a therapeutic gas delivery system including such a coupling, and a method of coupling components of a therapeutic gas delivery system using such a coupling. According to various, but not necessarily all, embodiments there is provided: a therapeutic gas delivery system coupling comprising: an inlet coupleable to a therapeutic gas supply; a delivery outlet configured for delivery of therapeutic gas to a subject; a waste outlet coupleable to a gas extraction system; the coupling comprising a body portion having: a main cavity located between the inlet and the delivery outlet; and an ancillary cavity, located between the main cavity and the waste outlet; wherein: the main cavity and ancillary cavity are linked via an exhalation valve, the exhalation valve being moveable between: a closed position if a pressure differential between the ancillary cavity and the main cavity is greater than or substantially equal to zero, and an open position if a pressure differential between the ancillary cavity and the main cavity is less than zero; and wherein the ancillary cavity further comprises a waste valve, the waste valve being moveable between: an open position if a pressure differential between the ancillary cavity and ambient pressure is less than zero, and a closed position if a pressure differential between the ancillary cavity and ambient pressure is greater than or equal to zero. Arrangements in accordance with described approaches may improve the capture efficiency of exhaled gas, for example, exhaled gas containing nitrous oxide, during and between periods of active administration of therapeutic gases.

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 utility model relates to the technical field of semiconductor manufacturing, in particular to a breather valve and a semiconductor temperature control device, the breather valve comprises a shell, the shell is provided with an inner cavity, a first through hole and a second through hole, and the first through hole and the second through hole are respectively communicated with the inner cavity; the air suction valve plate is arranged in the first through hole and is movably connected with the shell through a first adjusting component; the exhalation valve plate is arranged in the second through hole and is movably connected with the shell through a second adjusting part; the breather valve is suitable for being switched between an inspiration state and an expiration state, in the inspiration state, the inspiration valve plate opens the first through hole, the expiration valve plate closes the second through hole, in the expiration state, the inspiration valve plate closes the first through hole, and the expiration valve plate opens the second through hole. When the breathing valve is applied to the circulating liquid system of the semiconductor temperature control device, the breathing function of the circulating liquid system can be realized by arranging the breathing valve capable of simultaneously meeting the requirements of high and low temperature areas through a special structural design, the customization cost is reduced, the structure is simple, and the stability of the circulating liquid system is improved.

Modular ventilator for assisted mechanical ventilation, comprising a turbine (1), an inspiratory manifold (2), and an expiratory valve (3), comprising a pneumatic module (N) having a first casing inside which it comprises the turbine (1) connected to an equipotential connector of the device, a first electronic control board (4), and the inspiratory manifold (2); an electrical module (E) having a second casing inside which it comprises one or more batteries (8), a single-board computer (SBC) (9) with a control interface and, a second electronic control board (10) connected to the first board (4) and to the control interface; a main structure (19) which can allow for the assembly of both modules, and; a screen (20) connected to the SBC (9), secured to the main structure (19) via securing means that allow it to rotate in two main directions.

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.

The breathing mask with the health protection function comprises a mask body, an air inlet pipe is fixedly connected to the front portion of the mask body, two expiration ports are symmetrically formed in the side, close to the bottom, of the front portion of the mask body, and a detachable filtering assembly is arranged in the end, opposite to the mask body, of the air inlet pipe. A connecting pipe is fixedly connected to the bottom of the air inlet pipe and located between the mask and the filtering assembly, and a detachable air inlet assembly is connected to the bottom of the connecting pipe. The filter assembly comprises a mounting plate inserted in the mounting plate, an exhalation valve mounted in the mounting plate, filter cotton mounted in the mounting plate and located on one side of the exhalation valve, and a first screw cap connected to the end part of the air inlet pipe in a screwing manner; the air inlet assembly comprises an annular plate fixedly connected to the bottom of the connecting pipe. Through the structure, the mask provides an excellent health protection effect, can be used for daily protection, can also be used in a medical environment, is a multifunctional protection product suitable for various environments, and has a wide application prospect.

The invention relates to an oxygen mask for supplying oxygen to a person, which can be modified for use on differently sized faces. The oxygen mask has a holding frame, which has a first cross-brace and a second cross-brace, a substantially gas-impermeable material arranged on the holding frame and which can be stretched between the first cross-brace and the second cross-brace, a headband connected to the holding frame, an exhalation valve arranged on the material and penetrating the material, and an oxygen supply line for providing oxygen to an inside of the oxygen mask, wherein the first cross-brace and the second cross-brace are arranged in two lateral holders, which are opposite each other, wherein at least the first cross-brace is flexible and wherein the distance of the lateral holders to each other is adjustable at least between a first and a second distance.

The present invention relates to the field of talker structures on gas masks, specifically a talker structure that can be converted into a protective state, comprising a talker body, a talker membrane arranged at the upper rear end of the talker body, an exhalation valve arranged at the lower rear end of the talker body, a displacement fixing frame fixedly arranged in the talker body; a talker cover is arranged at the front end cover of the talker body, and a knob is arranged on the talker cover; a displacement pusher is arranged in the displacement fixing frame; and the talker membrane includes a talker membrane seat that can be sealed with the inner wall of the talker body. The present invention can realize the forward and backward movement of the displacement pusher through the knob, and link the closing and opening between the talker membrane and the talker body, and realize the exchange of airflow inside and outside the mask through the gap between the talker membrane and the talker body, effectively reducing the breathing air resistance. When the mask is worn in a non-protective state, the breathing air resistance of the wearer can be reduced by more than 55%, effectively and quickly discharging the hot waste gas exhaled by the person out of the mask.

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.

A ventilator (100) ventilates a patient (102) by a high-flow oxygen therapy via a tube system (104). The ventilator has at least one sensor element (110), at least one actuatable inhalation valve or exhalation valve (120) and a control unit (130). The sensor element is arranged and configured to determine and to output a measured variable (112) within the tube system. The measured variable indicates a gas flow within the tube system. The actuatable inhalation valve or exhalation valve is arranged and configured to make possible a flow of a breathing gas from a ventilation circuit (107) of the ventilator. The control unit regulates a ventilation pressure provided by the ventilator via the at least one sensor element and the at least one inhalation valve or exhalation valve such that a predefined maximum pressure is not exceeded in a predefined area (140) of the tube system.

The invention relates to the technical field of medical instruments, in particular to an exhalation valve assembly for an anaesthesia machine and the anaesthesia machine. The exhalation valve assembly for the anesthesia machine comprises an exhalation valve shell (1), a driving gas device (5), an exhalation valve (7), a waste gas connecting pipe (12) and a plurality of driving gas connecting pipes (9 and 10), a driving gas pipeline (3) is arranged in the exhalation valve shell (1), and the exhalation valve shell (1) is provided with a second driving gas connector (6), a third driving gas connector (15), an exhalation valve mounting port (16), a waste gas pipeline connector (11), a loop connector (17) and other connectors. Therefore, the communication with an exhalation valve (7), a waste gas pipeline and an anaesthesia machine loop is realized. The exhalation valve (7) and the safety valve assembly (14) are integrated, connecting and sealing points are reduced, and the leakage risk is reduced. The exhalation valve assembly is compact in structure, uniform in connector, capable of supporting modular assembly and convenient to maintain. The device has the advantages of high integration, high sealing performance, low cost, high reliability and the like, and is suitable for modern anesthesia systems.

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 invention relates to a waterproof breathable structure and a gauge pressure sensor, and relates to the technical field of pressure detection. The waterproof ventilation structure comprises a first shell, an exhalation valve and an inhalation valve, wherein the exhalation valve is in one-way communication from inside to outside only when the inner and outer pressure difference is larger than first opening pressure (P1), and the inhalation valve is in one-way communication from outside to inside only when the outer and inner pressure difference is larger than second opening pressure (P2). The first shell is provided with an inner cavity and a ventilation channel communicating the inner cavity with the environment. Reliable waterproof and dustproof protection can be achieved, the change of internal and external pressure difference can be quickly responded, and pressure balance is carried out.

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.

The present invention belongs to the technical field of manufacturing high-altitude oxygen masks, and particularly relates to a high-altitude oxygen supply and oxygen-saving respirator. The present invention is composed of an oxygen storage cotton protective cover, oxygen storage cotton, an oxygen storage cotton base, a headband connecting band, a storage cotton inlet pipe, an oxygen mask body, an oxygen inlet pipe, an oxygen coil pipe, an inhalation valve seat, a normally closed negative pressure one-way inhalation valve, a normally closed positive pressure one-way exhalation valve, an exhalation valve seat, and a duckbill one-way drainage valve. When used at high altitudes, the present invention has the oxygen storage function of the oxygen storage cotton, realizes the oxygen accumulation and supply in the respirator with low-flow oxygen supply; has a sealed structure design, and the opening and closing combination of the mask valve group is driven by the human breathing pressure and automatically matches the human breathing rhythm, thereby improving the utilization rate of oxygen and realizing the economical use of oxygen carried at high altitudes; has the functions of reducing the oxygen supply temperature difference and dehumidifying inside the mask, and improves the comfort during long-term use.

The present invention relates to a positive pressure breathing full face mask and a positive pressure respirator, comprising: a face window covering the face; an oronasal mask covering the mouth and nose; an air supply valve connected to the oronasal mask; an exhalation valve connected to the oronasal mask; an annular sealing ring provided at the edge of the face window and having a slot; a sealing airbag provided in the slot for pressing the temples of the glasses against the face and forming a seal with the face; an airbag inflation port provided on the sealing airbag; and a pressure relief hole provided on the inner side of the sealing airbag for releasing gas into the facial area covered by the face window to form a positive pressure environment. The present invention utilizes the inflated sealing airbag to press the temples of the glasses against the face and fill the gap between the temples of the glasses and the face, thereby forming a complete seal between the full face mask and the face. Simultaneously, the pressure relief hole releases gas into the facial area covered by the face window, thereby forming a positive pressure environment in the facial area covered by the face window relative to the external area, greatly reducing the risk of toxic gases infiltrating into the facial area covered by the face window.

The invention relates to respirator technology, in particular to an adaptive auxiliary air supply respirator and a control method thereof. The respirator comprises: a sealing face shield covering the area of the mouth and nose, an internal chamber being formed within the sealing face shield; an exhalation valve connected to the sealing face shield, communicating with the internal chamber, and configured to open unidirectionally during exhalation; an intake chamber located inside the sealing face shield and equipped with an inhalation valve which opens unidirectionally during inhalation; a filter mounted on the sealing face shield and communicating with the intake chamber; and an auxiliary air supply mechanism comprising a fan extending into the intake chamber, a controller for controlling a speed of the fan, and a sensor arranged inside the sealing face shield. The fan draws external air, accelerating during inhalation and decelerating during exhalation, improving user experience.

The utility model discloses a multifunctional atomization mask for pets, which comprises a mask body, and the mask body is formed by folding a fan-shaped annular panel and is fixed into a conical structure through a first magic tape; a first silica gel layer is arranged on the inner side of the small end of the mask body, and a second hook-and-loop fastener is arranged on the outer side. A telescopic sleeve is fixed to the large head end of the mask body through a third hook-and-loop fastener, a base plate is fixed to the bottom of the telescopic sleeve through a zipper, and an atomization / oxygen catheter insertion hole and a one-way inhalation valve are arranged on the base plate. A breathing hole and a one-way exhalation valve are arranged on the conical face of the mask body. The mask body used in daily life and atomization oxygen inhalation treatment are combined together, the mask body is reinforced and fixed through the neck support, the telescopic sleeve and the base plate are fixed to the mask body, an atomization oxygen inhalation space is formed, the telescopic sleeve can be adjusted according to the size of the head of a pet, the application range is wide, and the pet can be conveniently treated.

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.

Ventilation device (1) for ventilating a patient (47), with • a control unit (7), • an expiratory valve (3), • an inspiration valve (2), • an inspiratory pressure sensor (13), • an expiratory pressure sensor (13'), • a connection system (48) with an inspiratory supply line (91) for supplying respiratory gases to the patient (47) and with an expiratory supply line (92) for carrying respiratory gases away from the patient (47), • a connecting element (46) for connecting the patient (47) to the connection system (48), • a pressure measuring line (94) pneumatically coupled to the connecting element (48), • another pressure sensor (15) pneumatically coupled to the pressure measuring line (94), • wherein the inspiratory pressure sensor (13) is arranged in or on the inspiratory supply line (91) of the connection system (48), • wherein the inspiratory pressure sensor (13) is designed to detect an inspiratory pressure measurement value (13) and to provide the inspiratory pressure measurement value (13) to the control unit (7), • wherein the expiratory pressure sensor (13') is arranged in or on the expiratory supply line (92) of the connection system (48), • wherein the expiratory pressure sensor (13') is designed to detect an expiratory pressure measurement value (13') and to provide the expiratory pressure measurement value (13') to the control unit (7), • wherein the further pressure sensor (15) is designed to detect a pressure measurement value close to the patient and to provide the pressure measurement value close to the patient to the control unit (7), • wherein the control unit (7) is designed to control the inspiration valve (2) taking into account the inspiratory pressure measurement value (13) in order to provide an inspirational breathing gas mixture with an inspirational pressure level for the patient (47) via the inspirational supply line (91) of the connection system (48), • wherein the control unit (7) is designed to control the expiratory valve (3) taking into account the expiratory pressure measurement value (13') in order to set an expiratory pressure level via the expiratory supply line (92) of the connection system (48) for the patient (47), • wherein the control unit (7) is designed to carry out ventilation with a ventilation frequency of up to 150 respiratory cycles per minute (150 min -1 ) with a ratio of inspiration time T i to expiratory time T ein a range from 4 to 1 to 1 to 5 (I:E ratio from 4:1 to 1:5), • wherein the control unit (7) is designed to control at least the expiratory pressure level on the basis of the patient-near pressure measurement value by means of the inspiration valve (2) and the expiration valve (3) in such a way that the pressure level is assigned an HF oscillation with an HF ventilation frequency (17) as a variation in amplitude in a range of 3 Hertz to 20 Hertz (3 sec -1 up to 20 seconds -1 ) with and with a HF oscillation ratio (20) of HF-inspiration time HF-T i to HR-expiratory time HR-T e in a range of 1 to 1 to 1 to 3 (HF- I:E ratio of 1:1 to 1:3), wherein the control unit (7) is further designed to carry out a signal processing (1000) of the pressure measurement value close to the patient, wherein the control unit (7) when carrying out the signal processing (1000) • at least one property of the pressure measuring line (94) from a group of properties associated with pressure measuring lines and • at least one ventilation setting (21) or a change in the at least one ventilation setting (21) before and / or during operation of the ventilation device (1) from a group of ventilation parameters are taken into account, wherein the group of properties associated with pressure measuring lines comprises at least one of the following elements: o Length of the pressure measuring line (94), o Diameter of the pressure measuring line (94), o Material properties of the pressure measuring line (94), o Flow resistance of the pressure measuring line (94), o A line type, characterizing the length, the diameter, the material properties and / or a flow resistance of the pressure measuring line (94), wherein the group of ventilation settings (21) that can be set during operation of the ventilation device comprises at least one of the following elements: ◯ Ventilation rate (RR), ◯ Ratio of inspiration time to expiratory time (I:E ratio), ◯ Inspiration time (T i ), ◯ Expiratory time (T e ), ◯ inspiratory pressure level P insp , ◯ mean airway pressure P AW (19), ◯ HF pressure pressure level P HF (18), ◯ expiratory pressure level P exp , ◯ positive end-expiratory pressure (PEEP), ◯ HR ventilation rate (HR-RR) (17), ◯ set RF oscillation ratio (RF I:E ratio) (20), ◯ HR inspiratory time (HR-T i ), ◯ HR expiratory time (HR-T e ), ◯ inspiratory pressure plateau, ◯ inspiratory pressure gradient, ◯ Operating mode of a ventilation form, ◯ Patient type, characterized by age, sex, weight, gestational age, APGAR score, clinical picture of the patient (47).

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.