62 results about "Inhalation 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 relates to the technical field of medical instruments and digital health, in particular to an intelligent device of a child respiratory training device and a using method thereof, and the intelligent device comprises a silica gel nozzle, a plastic inlet piece, a mode disc, a silica gel suction valve, an adjusting spring, a frequency ball, an airway cavity, a strength disc, a detection module, an air inlet and outlet grating, a spring sliding piece, a silica gel exhalation valve and a mapping system; the mapping system comprises a self-adaptive algorithm module and a game mapping module. The self-adaptive algorithm module is used for calculating a gear and a training mode required by a user based on personal information of the user; the game mapping module sets a game scene and a training feedback mode based on breathing training of a user. The breathing mode and the training intensity are adjusted through a pure mechanical structure, the problem of insufficient user compliance is solved by combining breathing training with a game dynamic mapping engine, and the problem of individual difference is solved through a self-adaptive algorithm.

The invention relates to a device for automatically pressing a breathing balloon. The device comprises a mask, an exhalation valve, an inhalation valve, the breathing balloon, a three-way pipe, a pulling piece strip and a main controller. The mask is fixed to the face of a patient through the tearing adhesive tape and used in cooperation with the exhalation valve and the inhalation valve to form a breathing loop. The exhalation valve and the inhalation valve are both connected with the three-way pipe, a detection chip is arranged in the three-way pipe, the ventilation capacity is detected through the air pressure and the flow speed, and data can be sent to the main controller through wireless radio frequency signals; the pulling sheet strip is wound outside the breathing balloon, a main controller is fixed at one end of the pulling sheet strip, a transmission gear is arranged at the bottom end of the main controller and connected with the pulling sheet strip, the three-way pipe is provided with an air inlet, an air outlet and a pressure tapping port, and the pressure tapping port is connected with a pressure sensor of the breathing balloon. Compared with the prior art, the pressing force can be accurately guaranteed, and the pressing ventilation capacity can be guaranteed; the universality is realized; and meanwhile, clinging and regular pressing of the mask are ensured.

The utility model discloses a medicine suction bottle for nebulization therapy, which relates to the technical field of medical instruments and comprises a bottle body, a detachable base is arranged on one side of the bottle body, a large whistle and a small whistle are mounted on the base, an air suction valve is arranged on the other side of the bottle body, a suction nozzle is sleeved outside the air suction valve, and the suction nozzle is sleeved outside the bottle body. An air valve support, an air valve block installed on the air valve support and an air valve cover arranged outside the air valve support in a sleeving mode are further arranged on one side of the suction nozzle, a cover cap is connected to one side of the suction nozzle, and a medicine feeding cavity is formed in the bottle body. Due to the fact that the inhalation valve of the duck tongue valve structure is arranged on one side of the bottle body, a patient inhales from the position of the suction nozzle during use, the inhalation valve can be opened under the action of pressure, the inhalation valve is closed under the action of pressure during exhalation, and air is exhausted from an exhaust mechanism composed of the air valve support, the air valve block and the air valve cover. The device is simple and reasonable in structure, convenient to use during medicine suction and good in use effect.

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.

The utility model relates to a respiratory protection mask provided with a sealing self-checking device, and belongs to the technical field of respiratory protection sealing detection of protection masks. The sealing self-checking device is composed of a mask body, an elastic key, an inspiration valve seat channel, an inspiration valve, a filtering element connector, an air channel and a locking ring, the elastic key made of silica gel or rubber materials is adopted to press and block an air inlet channel, and due to the fact that the elastic key is soft, the plane contact sealing effect of the elastic key and the inspiration valve seat channel is good after the elastic key is pressed; after pressing, the fingers are released to restore the original shape, and the operation is convenient; the device can be suitable for breathing protection masks such as full face masks, half masks, single-filtering-element connectors and double-filtering-element connectors. The defects that in the prior art, detection illusion is easily caused by a self-detection method of blocking an air inlet by hands, and an airtight detection cover plate needs to be closed by driving a hinge to rotate through a pull rod in a manner of adopting the airtight detection cover plate, operation is inconvenient, a user feels oppressed when closing the airtight detection cover plate, and the airtight detection cover plate needs to be pressed down again to return are overcome.

The application discloses a training mask for COPD patients, and relates to the technical field of medical devices.The training mask comprises a mask body, a one-way inhalation valve arranged on the left side of the mask body, an oxygen access port arranged on the right side of the mask body, a thread structure arranged on the oxygen access port, an adjustable anti-resistance exhalation module arranged at the front end of the mask body, and a resistance adjusting knob arranged on the side of the adjustable anti-resistance exhalation module.The adjustable anti-resistance exhalation module is matched with the resistance adjusting knob and a variable resistance valve sheet, so that multi-stage adjustment of exhalation resistance is realized, the training needs of different patients and different disease stages are met, and the pertinence and effectiveness of the training are improved.The training mask is integrated with a cough auxiliary triggering module, a gear shifting knob and a manual gear adjusting mechanism, so that quick switching between a training gear and a cough gear is realized, the exhalation resistance can be instantaneously reduced during the cough training, the patients can complete effective cough actions, and the airway clearance ability is improved.

The present application provides a pulse oxygen supply system and a pulse oxygen supply control method, which relate to the technical field of oxygen supply for medical care. In the present application, the working hole of a first normally closed two-way three-way solenoid valve is communicated with an oxygen inhalation pipeline having a one-way inhalation valve of a closed-type breathing mask, the oxygen outlet of an oxygen supply unit is communicated with the air source hole of the first normally closed two-way three-way solenoid valve, and the air outlet of a positive pressure air supply unit is communicated with the exhaust hole of the first normally closed two-way three-way solenoid valve through a flow detector. Then, according to the gas flow condition detected by the flow detector during the human inhalation stage, the control unit controls the oxygen supply unit to supply oxygen during the human inhalation stage when the first normally closed two-way three-way solenoid valve is energized, and controls the positive pressure air supply unit to supply pressure-maintaining air during the human exhalation stage when the first normally closed two-way three-way solenoid valve is de-energized, so as to effectively reduce the oxygen supply cost in a high-pressure or slightly high-pressure oxygen inhalation environment, and simultaneously improve the oxygen utilization rate and the oxygen inhalation safety.

Devices, systems, and methods for a suction valve assembly for a medical device. The suction valve (300) assembly includes a valve body (320), a sliding shaft (310), and a flap seal (340). The valve body has a central channel (322) extending vertically between vent openings (324) in the top and a working opening (326) in the bottom and a side opening (328) extending from the central channel to the side surface. The sliding shaft moves within the central channel between an upper position where its upper channels are adjacent the vent openings, and a lower position where it extends into the working opening and unseats the flap seal.

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 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 invention relates to the technical field of biochemical protection, in particular to a mask connector base structure for a gas mask, which comprises a tank body, and the inner wall of the tank body is provided with threads to serve as a tank connector for being connected with a gas filter tank; a center hole penetrates through the center of the inner bottom surface of the tank body, a circle of vent holes are formed in the periphery of the center hole, a gasket limiting groove is formed in the edge of the inner bottom surface of the tank body, and a plurality of rectangular grooves are formed in the gasket limiting groove; an air suction valve piece covering the vent hole is installed on the outer side of the bottom face of the tank body through a rivet, and the rivet is fixedly connected to the center hole. The gas mask gasket is reasonable in design, the gasket can be effectively prevented from falling off, the use reliability of a gas mask is improved, the daily guarantee difficulty of the gas mask is reduced, and the gas mask gasket has good practical application value.

A piston (18) of a compressor (1) partitions the inside of a cylinder (17) into a compression chamber (21) and a suction chamber (22). A communication passage (19A) is formed in the piston (18). The communication passage (19A) establishes communication between the compression chamber (21) and the suction chamber (22). The suction valve (23) opens and closes an opening (19A1) of the communication passage (19A). The suction valve (23) has a plate-like shape. The suction valve (23) includes a fixation portion (23A) fixed to the piston (18), a closing portion (23B) configured to cover the opening (19A), and a spring portion (23C) connecting the fixation portion (23A) and the closing portion (23B). A spring portion facing portion (19B) in the piston (18), which faces the spring portion (23C) of the suction valve (23), is recessed more deeply than a closing portion facing portion (19C), which faces the closing portion (23B) of the suction valve (23).

A device, system, and method for a suction valve assembly for a medical device. The suction valve assembly includes a valve member having a valve shaft that slides within a valve well. The valve shaft includes one or more slits and is biased to expand outward and compress the inner wall of the valve well.

The embodiment of the present application discloses a safety valve, an inhalation valve and a breathing machine, wherein the safety valve comprises a mounting seat, a closing assembly and a driving assembly. The mounting seat is provided with a ventilation channel; the elastically connected closing assembly has a first position capable of closing the ventilation channel and a second position capable of opening the ventilation channel on the mounting seat; in a free state, the elastic force forces the closing assembly to be located at the first position or the second position; the driving assembly can drive the closing assembly to move against the elastic force, so that the closing assembly is transformed between the first position and the second position. By setting the closing assembly, the closing assembly is elastically connected to the mounting seat; in a free state, the closing assembly can be located at the first position capable of closing the ventilation channel or at the second position capable of opening the ventilation channel under the action of the elastic force; by cooperation of the driving assembly and the elastically arranged closing assembly, the opening and closing of the ventilation channel can be realized, the structure is simple, the cost is reduced, and assembly is relatively convenient.

Embodiments of the present application disclose a compliance and leakage determination method and device, equipment and a storage medium, the method is applied to a breathing assistance system including at least a gas flow pipeline provided with an inhalation valve, the method comprises: obtaining real-time flow rate flowing through the inhalation valve and simulation breathing data, the simulation breathing data includes inhalation data and exhalation data; the inhalation data includes inhalation start time and inhalation end time, and the exhalation data includes exhalation start time and exhalation end time; determining pipeline compliance of the gas flow pipeline by using the real-time flow rate, the inhalation start time, the inhalation end time, the exhalation start time and the exhalation end time; and determining system leakage of the breathing assistance system by using the exhalation start time and the inhalation start time. Through the above manner, the self-checking of the leakage and compliance of the breathing assistance system can be realized without using high-precision flow sensors and flow control valves, and the cost is effectively reduced.

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 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.

This application provides a flow control method for an electronically controlled flow meter and an anesthesia machine. The method includes: during the entire inspiratory-expiratory cycle, the electronically controlled flow meter only outputs fresh gas during the inspiratory phase; when outputting fresh gas during the inspiratory phase, the shape of its flow waveform is the same as the flow waveform of the inspiratory valve of the respiratory delivery unit. The advantage of this application is that, compared to traditional methods, the time to reach the target pressure or tidal volume is several inspiratory-expiratory cycles faster.

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.

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 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 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.

The invention discloses a pulse type automatic oxygen inhalation device which comprises an oxygen inhalation mask and a shell, a gas circulation cavity and a mixed gas cavity communicated with the gas circulation cavity are formed in the shell, an inhalation valve clack of the oxygen inhalation mask is communicated with the gas circulation cavity, a spring limiting frame is arranged in the gas circulation cavity, and the mixed gas cavity is communicated with the gas circulation cavity. The upper side of the spring limiting frame is connected with a first spring, the upper end of the first spring is connected with a breathing activity silica gel membrane, a magnetic sheet is embedded in the breathing activity silica gel membrane, the lower side of the spring limiting frame is connected with a second spring, and the lower end of the second spring is connected with a magnetic rubber plate. The edge of the breathing activity silica gel membrane and the inner wall of the shell are sealed, the breathing activity silica gel membrane is connected to the upper end of the shell in a clamped mode, gas in the mixed gas cavity enters the gas circulation cavity through magnetic attraction force generated by the magnetic sheet and the magnetic rubber plate and under the action of the upper spring and the lower spring, and automatic oxygen inhalation is achieved.

The invention relates to a respiratory protection mask provided with a sealing self-checking device, and belongs to the technical field of respiratory protection sealing detection of protection masks. The sealing self-checking device is composed of a mask body, an elastic key, an inspiration valve seat channel, an inspiration valve, a filtering element connector, an air channel and a locking ring, the elastic key made of silica gel or rubber materials is adopted to press and block an air inlet channel, and due to the fact that the elastic key is soft, the plane contact sealing effect of the elastic key and the inspiration valve seat channel is good after the elastic key is pressed; after pressing, the fingers are released to restore the original shape, and the operation is convenient; the device can be suitable for breathing protection masks such as full face masks, half masks, single-filtering-element connectors and double-filtering-element connectors. The defects that in the prior art, detection illusion is easily caused by a self-detection method of blocking an air inlet by hands, and an airtight detection cover plate needs to be closed by driving a hinge to rotate through a pull rod in a manner of adopting the airtight detection cover plate, operation is inconvenient, a user feels oppressed when closing the airtight detection cover plate, and the airtight detection cover plate needs to be pressed down again to return are overcome.

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.

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 utility model provides an auxiliary device for a human shortening operation, which relates to the technical field of medical instruments and comprises a connecting piece and two supporting tubes, the connecting piece is of a sheet structure, two ends of the connecting piece are bent oppositely, the two supporting tubes are respectively arranged at two ends of the connecting piece, and a baffle for dividing a channel of each supporting tube into an upper channel and a lower channel is arranged in each supporting tube. The upper channel is located on the upper side of the lower channel, and an air suction valve controlling opening and closing of the lower channel is arranged in the lower channel. The device can effectively reduce contact of breathing wet and turbid airflow to a wound in the middle of a person.