CN212491049U - Fool type double-level respirator - Google Patents

Abstract

The utility model relates to a fool type double-level respirator. The air source device of the breathing machine comprises an air bag and a reciprocating driving mechanism, wherein the air bag is a corrugated air bag, one end of the air bag is fixedly installed on an air bag fixing frame, the other end of the air bag is connected with a reciprocating pressing plate of the reciprocating driving mechanism, the reciprocating driving mechanism is provided with a motor driving device used for driving the reciprocating pressing plate to reciprocate, the motion direction of the reciprocating pressing plate is the same as the axis direction of the air bag, the air bag is provided with an air outlet and an air inlet, the air outlet and the air inlet of the air bag are respectively provided with respective one-way valves, and the air outlet of the air bag is used for. The other respirator is provided with a middle bin and a humidifier on the basis of the respirator, so that the mixing mode of oxygen is optimized. The utility model discloses simple structure, the operation mode can be ventilated by the bi-level, and the gas circuit part can disposable, helps avoiding cross infection, is adapted to and uses or other occasions at home.

Description

Fool type double-level respirator

Technical Field

The utility model relates to a fool type double-level respirator belongs to medical instrument technical field.

Background

When the patient can not breathe normally, the breathing machine is used as a necessary treatment means, and is a necessary device for rescuing life. At present, the breathing machines commonly used in hospitals often adopt an air pump system to supply air in a dozen or even in a dozen, the air pump system can be used for the next patient repeatedly after disinfection, once the disinfection work is neglected, cross infection is very easy to cause, therefore, professional personnel and special facilities are needed to disinfect, even if the price problem is not considered, the breathing machine is not suitable for the self-use of the patient at home, therefore, a simple and practical breathing machine is necessarily developed aiming at the home use environment and the use condition.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the above-mentioned defect of prior art, provide and be adapted to fool formula double level breathing machine that occasions such as house used, the air feeder of this kind of breathing machine is with low costs, can disposable, helps reducing because of the pathogen propagation that the disinfection of breathing machine air supply system thoroughly leads to.

The technical scheme of the utility model is that:

fool-type double-level respirator is equipped with air supply device, air supply device includes ripple gasbag and reciprocating drive mechanism, the gasbag is the ripple gasbag, and its one end fixed mounting is on the gasbag mount, and the other end is connected reciprocating drive mechanism's reciprocating type clamp plate, reciprocating drive mechanism is equipped with and is used for the drive reciprocating type clamp plate reciprocating motion's motor drive arrangement, reciprocating type clamp plate the direction of motion with the axis direction of gasbag is the same, the gasbag is equipped with gas outlet and air inlet, the gas outlet and the air inlet of gasbag are equipped with respective check valve respectively, the gas outlet of gasbag is used for connecting the breathing pipe of pipe system (the pipe system who is adapted to the respirator), can carry out the intake pipe with the entrance point of breathing pipe at the scene and be connected.

The air inlet of the air bag may also be referred to as an air inlet for introducing external air. The air inlet of the air bag can be connected with an air filter, and air enters the air filter from the air inlet of the air filter to be filtered before entering the air bag and then enters the air bag.

The air filter is internally provided with a filtering material, and the filtering material is preferably made of porous materials and is used for filtering air flowing through the filter.

The air bag can be provided with an atomizing air inlet which is used for being connected with an air outlet of the atomizer so as to introduce atomizing air for humidification and improve the content of water vapor in the air.

The atomizer may be an ultrasonic atomizer or other suitable water atomizer.

The gasbag can be equipped with the oxygen air inlet for connect the oxygen source, the oxygen source can adopt oxygenerator etc..

The air outlet, the air inlet, the atomizing air inlet, the oxygen inlet and other inlets and outlets (if any) of the air bag can be provided with one-way valves (if required, limited to one-way inlet or outlet) under corresponding purposes. For example, the air outlet is provided with an air outlet one-way valve, and the air inlet is provided with an air inlet one-way valve and the like.

All or part of the air inlet of the air bag, the air inlet of the atomizer, the air inlet of the oxygen and inlets for other purposes can be connected with regulating valves so as to control the relative flow of the inlets (the air inlet, the air inlet of the atomizer, the air inlet of the oxygen and the inlets for other purposes are collectively called as inlets), and further control the proportion of various media in the air bag.

The regulating valves may be provided directly on these inlets, or on the conduits (pipes) to which these interfaces are connected.

The catheter system comprises an inhalation tube, an exhalation tube and a breathing coupling piece, wherein the inhalation tube is provided with an inhalation valve and a flow limiting valve, one End (air inlet End) of the inhalation tube is connected with an air outlet of the air bag, the other End of the inhalation tube is connected with an inhalation port (inhalation interface or inhalation limb) of the breathing coupling piece, the exhalation tube is provided with an exhalation valve and a PEEP (Positive End Expiratory Pressure) controller, or is provided with the exhalation valve but not provided with the PEEP controller, one End of the exhalation tube is a discharge End, and the discharge End is usually a free End and is communicated with the atmosphere, but can be connected or connected with other devices as required.

For example, the discharge end of the exhalation tube can be connected to a water bottle, which is a gas purifier using water as a washing or filtering medium, and can be a bottle-shaped or cylindrical container, which is used for purifying the exhaled gas of the patient and can also form a certain resistance, and is used as a PEEP controller or partially functions as a PEEP controller, and the other end of the exhalation tube is connected to an exhalation port (an exhalation port or an exhalation limb) of the respiration coupling member.

The respiratory coupling piece is a face mask or an artificial airway (such as a tracheal cannula), and the face mask is a special face mask of a breathing machine and comprises any form of a whole face mask, a nasal mask or an oronasal mask.

The PEEP is a damping element or a PEEP valve (control valve or shut-off valve).

The inhalation valve and the exhalation valve are both electrically controlled valves (e.g., electrically controlled solenoid valves) so as to be controlled by the control device.

According to actual needs, a mask can be used for noninvasive positive pressure ventilation, an intubation mode can also be used, and a standard interface can be arranged for installing a catheter system on site or for specific use. The pressure required for aeration is obtained by a gas source. A single level positive pressure mode of operation or a bi-level positive pressure mode of operation may be used, for example, with a high level of pressure during inspiration and a low level of pressure during expiration. Since positive pressure is generally required, the one-way valve at the outlet of the air bag is typically an outlet one-way valve.

Such a balloon may also generate a negative pressure. Particularly, with the advancement of technology, medical means and ways are continuously improved and improved, and even subversive technology is appeared. Therefore, when negative pressure is needed in medical treatment, the negative pressure can be generated by the air bag, and specifically, the negative pressure can be applied to the respiratory system only by connecting the air outlet of the air bag to the atmosphere and connecting the air inlet with the medical catheter.

The air bag can be provided with a plurality of inlets and outlets (interfaces), and corresponding one-way valves are inserted on the inlets and outlets according to the requirements during use, so that the interfaces are changed into interfaces which only allow one-way inflow or one-way outflow. For example, when it is desired to introduce a fluid (e.g., aerosol, air, oxygen) into the bladder, a one-way inlet valve (here, in the direction of entry into the bladder) is inserted into a corresponding port on the bladder.

The arrangement of the check valve can be based on the prior art, and the check valves in different directions determine whether the inlet and the outlet are inlets or outlets.

For example, the airbag should be generally provided with an air inlet and an air outlet, an outlet one-way valve may be arranged at one interface of the airbag as required to enable the outlet one-way valve to become the air outlet, an inlet one-way valve may be arranged at the other interface to enable the inlet one-way valve to become the air inlet, the air outlet may be provided with a one-way air outlet valve according to the prior art, and the air inlet may be provided with a one-way air inlet valve according to the prior.

The mask is a special breathing mask and can be in any schematic form such as a nose mask, an oronasal mask or an integral mask.

The air bag may be provided with an atomising gas inlet.

The atomizer inlet is connected to the atomizer outlet via a conduit to increase the water content of the air.

Generally, an endotracheal tube (artificial airway) is provided with an inspiratory limb and an expiratory limb, which are connected to an inspiratory conduit and an expiratory conduit, respectively; the face mask is provided with an air suction port (interface short pipe) and an air expiration port (interface short pipe), and the air suction port and the air expiration port of the face mask are respectively connected with an air suction conduit and an air expiration conduit.

Generally, an inspiratory valve (inspiratory control valve) and an expiratory valve (expiratory control valve) are provided in an inspiratory conduit and an expiratory conduit, and control and switching between an inspiratory state and an expiratory state are performed.

The air suction pipe can be provided with a safety valve so as to release pressure when the pressure in the pipe is too high.

When used for single level operation, the PEEP valve may not be provided on the exhalation tube.

Preferably, the air-bag is vertical, the axis direction being vertical.

Preferably, the air bag holder and the reciprocating platen are each provided with a quick connector for securing the respective air bag, e.g. a clip capable of fastening the lower and upper portions of the air bag, respectively.

Preferably, the motor driving device is a linear motor, and a rotor of the linear motor is fixedly connected with the reciprocating type pressing plate; or, motor drive includes gear motor, install the bent axle on gear motor's the output shaft, the bent axle can adopt discoid or other arbitrary suitable forms, the bent axle passes through the connecting rod and connects reciprocating type clamp plate, the connecting rod with the bent axle with reciprocating type clamp plate's connected mode all is articulated, forms bent axle connecting rod drive mechanism, reciprocating type clamp plate is equipped with linear guide.

Fool-type bi-level respirator includes:

the air source device comprises a corrugated air bag and a reciprocating driving mechanism, wherein the air bag is a corrugated air bag, one end of the corrugated air bag is fixedly mounted on an air bag fixing frame, the other end of the corrugated air bag is connected with a reciprocating pressing plate of the reciprocating driving mechanism, the reciprocating driving mechanism is provided with a motor driving device for driving the reciprocating pressing plate to reciprocate, the motion direction of the reciprocating pressing plate is the same as the axis direction of the air bag, the air bag is provided with an air outlet and an air inlet, the air outlet of the air bag is provided with an air outlet one-way valve, the air inlet of the air bag is provided with an air inlet one-way valve, the number of the air source devices is one or two, and the air source;

the middle bin is provided with one or more air inlets and one or more air outlets, and the air inlets of the middle bin are connected with the air outlets of the air bags;

the humidifier is provided with an air inlet and an air outlet, the air inlet of the humidifier is connected with the air outlet of the intermediate bin through a conduit, and the air outlet of the humidifier is provided with an air outlet (air outlet interface) used for being connected with an air suction pipe of a conduit system (a breathing machine conduit system) and is connected with the air suction pipe of the conduit system during use.

When the number of the intermediate bins is multiple, the intermediate bins can be connected in parallel to increase the gas storage capacity.

The motor driving device can be a linear motor, and a rotor of the linear motor is fixedly connected with the reciprocating type pressing plate; or, the motor driving device may include a speed reduction motor, a crankshaft is mounted on an output shaft of the speed reduction motor, the crankshaft may adopt a disc shape or any other suitable form, the crankshaft is connected to the reciprocating pressing plate through a connecting rod, the connecting rod is hinged to the crankshaft and the reciprocating pressing plate to form a crankshaft connecting rod transmission mechanism, and the reciprocating pressing plate is provided with a linear guide rail.

The top of the middle bin can be provided with a pressure display device.

The pressure display device is preferably provided with a cylindrical display shell and a piston matched with the display shell, the piston is positioned in the display shell, the periphery of the piston is matched with the inner wall of the display shell in a sliding sealing manner, an upper spring is arranged above the piston, a lower spring is arranged below the piston, the upper spring and the lower spring are both helical springs, the upper end of the upper spring is connected with an upper spring support positioned in the display shell, the lower end of the upper spring is connected with the upper surface of the piston, the lower end of the lower spring is connected with a lower spring support positioned in the display shell, the upper end of the lower spring is connected with the lower surface of the piston, the upper spring support and the lower spring support are both fixedly installed in the display shell, the upper spring support and the lower spring support are both of a breathable structure, a medium channel in the display shell is not sealed, and unnecessary resistance caused by overlarge shielding area is, the lower port of the display shell is communicated with the inner cavity of the middle bin, the upper port of the display shell is communicated with the atmosphere outside the middle bin, and the display shell is provided with a vertical transparent display window.

An air-entraining pipe which is opened below the water surface of the humidifier is preferably arranged on the inner side of the air inlet of the humidifier, and an air outlet of the humidifier is arranged on the upper part of the humidifier shell.

And a filter screen layer is preferably arranged in the humidifier. The filter screen layer can be composed of one or more layers of horizontal filter screens and is positioned between the air outlet of the humidifier and the water surface of the humidifier.

The air suction conduit can be provided with a water accumulation cup.

The suction pipe can be provided with a downward accumulated water elbow, the suction pipe is divided into two sections at the accumulated water elbow, and the accumulated water cup is positioned at the lower end of the accumulated water elbow and connected with the suction pipes positioned at the two sides of the accumulated water elbow.

When two air source devices are provided, for example, the two air source devices include a first air source device and a second air source device, and the motor driving device of the first air source device and the motor driving device of the second air source device may share the same driving motor, or may be respectively provided with respective driving motors.

Or, the number of the air source devices can be two, and the two air source devices share one driving motor or are respectively provided with respective driving motors.

The intermediate bin can be provided with an oxygen inlet which is connected with an oxygen source through a conduit.

One or more vertical baffle plates which are arranged in sequence can be arranged in the middle bin, and the air inlet and the oxygen inlet of the middle bin and the air outlet of the middle bin are respectively positioned at two sides of the one or more baffle plates. The arrangement or distribution of the baffle(s) and associated air inlet and outlet ports may be achieved in accordance with the prior art.

The utility model has the advantages that: the utility model discloses a gas circuit system (including gasbag and each connecting tube and intermediate bin, humidifier etc.) can adopt low-cost disposable goods, and under the environment of house or other individual use situation, especially to respiratory system diseases such as pneumonia, it is the gas circuit system mainly to have pathogen to pollute the risk, and other parts of breathing machine can clean or simply disinfect just like indoor other article, for example, clean with the antiseptic solution, can fundamentally solve the pathogen disinfection problem of breathing machine from this, need not special disinfection facility and professional disinfection personnel, eliminate the biggest obstacle that hinders breathing machine entering family use cost.

The utility model discloses can realize single level positive pressure as required and ventilate and two kinds of mode of operation of ventilating with two level positive pressures, easy and simple to handle, and can adopt and not have two kinds of connection modes of wound (face guard) and intubate, can satisfy the needs that need not the patient of hospitalization or as the emergent reserve of family betterly, also can be used for other occasions.

Drawings

Fig. 1 is a system schematic diagram of a first fool-type bi-level ventilator of the present invention;

FIG. 2 is a system diagram of a second fool-type bi-level ventilator of the present invention;

fig. 3 is a schematic view of a gas source device according to the present invention;

fig. 4 is a schematic view of another gas source device according to the present invention;

fig. 5 is a schematic view of an airbag to which the present application relates.

Detailed Description

Referring to fig. 1 and 5, the first fool-type bi-level ventilator of the present invention mainly comprises an air source device (or called aerodynamic device), the air source device comprises a corrugated air bag 10 and a reciprocating driving mechanism, one end of the air bag is fixedly arranged on an air bag fixing frame 22, the other end of the air bag is connected with a reciprocating pressing plate 21 of the reciprocating driving mechanism, the reciprocating driving mechanism is provided with a motor driving device for driving the reciprocating pressing plate to reciprocate, the moving direction of the reciprocating pressure plate is the same as the axial direction of the air bag, the air bag is provided with an air outlet 11 and an air inlet 18, the air outlet and the air inlet of the air bag are respectively provided with a respective one-way valve, the air outlet of the air bag is used for connecting an air suction pipe of a conduit system (a breathing machine conduit system), and the air outlet can be connected with the inlet end of the air suction pipe on site.

The bladder may be provided with an atomising gas inlet which is connected to the outlet of an atomiser 58 via a conduit to increase the water content of the air.

The atomizer may be an ultrasonic atomizer.

The connection of the balloon to the expiratory tube can be achieved using existing techniques. For example, the dedicated endotracheal tube (integrated structure) of the existing ventilator is provided with an inspiratory limb and an expiratory limb, and the inspiratory limb and the expiratory limb are respectively connected with other parts of the device through the tube, so that the switching of the expiratory state and the inspiratory state can be carried out by utilizing the prior art.

The air bag can be provided with a plurality of inlets and outlets, and corresponding check valves are arranged on the inlets and outlets according to requirements so as to limit the medium flow direction of the inlets and outlets and form an air inlet or an air outlet which is respectively used for air inlet of the air bag and air outlet of the air bag. When the balloon is compressed, the internal pressure rises, and a certain pressure is built up in the suction pipe through the corresponding connecting conduit. When the middle cabin is not arranged, the pressure can be controlled by the air output quantity (flow) or the compression speed of the air bag, and the PEEP valve is arranged on the expiration pipe, so that the working modes of high-level pressure and low-level pressure can be realized. The pause time between inspiration and expiration may be used to effect a repositioning or stretching of the balloon. The device can carry out corresponding product calibration according to the compression speed of experimental data under certain pressure level indeed, and can also carry out pressure level detection through a pressure sensor provided with an air bag, and control is carried out by utilizing the existing respirator control technology or control device.

The air outlet of the air bag and the connecting conduit of the air suction pipe can be connected with or not connected with an elastic air bag in series, and the elastic air bag is made of elastic materials, so that the pressure can be well stabilized, and the pressure stabilizing effect is achieved.

An inlet and an outlet on the air bag can be used as an air inlet (or called an air inlet), and an inlet-and-outlet one-way valve (or called a one-way air inlet valve and an air inlet one-way valve) is arranged on the inlet and the outlet. The air inlet of the air bag can be directly communicated with the atmosphere, or can be connected with a small air filter 53, and the air filter is communicated with the atmosphere to filter the air.

The air outlet of the air filter and the air inlet of the air bag can be connected in a plug-in mode, and short connecting pipes which can be mutually plugged are usually arranged, so that the air filter can be plugged into the air inlet of the air bag or pulled out according to actual requirements.

Most or all of the inlet and outlet of the air bag can adopt the same interface form so as to facilitate on-site connection, and therefore the related conduit can be connected to the convenient inlet and outlet according to the convenience of on-site arrangement.

For the inlet and outlet ports at the same position (height), unless otherwise specifically designed or arranged, it should be universal or replaceable, and the required check valve or other accessories can be set (e.g., plugged) according to the actual use requirement.

In a specific use scene, if a certain/some preset inlet/outlet is/are not used, the certain/some preset inlet/outlet can be blocked by a plug.

Referring to fig. 3 and 4, the motor driving device may be a linear motor (or called a telescopic motor) 23, and a mover 24 of the linear motor is fixedly connected to the reciprocating platen to drive the reciprocating fixture to reciprocate; or, the motor driving device includes a speed reducing motor (a rotary motor with a speed reducer) 25, a crankshaft 26 is installed on an output shaft of the speed reducing motor, the crankshaft may adopt a disc shape or any other suitable form, the crankshaft is connected with the reciprocating pressure plate through a connecting rod 27, the connecting rod is hinged with the crankshaft and the reciprocating pressure plate to form a crankshaft connecting rod transmission mechanism, the rotary output of the speed reducing motor is converted into the up-and-down reciprocating motion of the reciprocating pressure plate, the reciprocating pressure plate is provided with a linear guide rail 28 to limit the reciprocating pressure plate to be capable of only linearly reciprocating motion, the guide rail and the movable connection with the reciprocating pressure plate can adopt any suitable existing technology, for example, a cylindrical guide rail is adopted, the reciprocating pressure plate is fixedly connected with a sleeve 29 which is sleeved on the cylindrical guide rail and can slide, so as to realize the sliding fit of the guide pipe and the reciprocating, a linear groove may be provided on the cylindrical guide rail and a radially inwardly projecting slider inserted into the groove may be provided on the inner wall of the sleeve to prevent the sleeve from rotating.

The air bag is usually arranged in a vertical mode, the axis direction is vertical, and the air bag fixing frame 22 and the reciprocating pressing plate 21 are respectively provided with a quick connector for fixing the corresponding air bag, for example, a hoop capable of binding the lower end of the air bag is arranged, so that the air bag can be conveniently assembled and disassembled.

The gasbag mount with reciprocating type clamp plate all can be flat, the upper surface of gasbag mount is equipped with and is used for holding the recess of the bottom of gasbag, reciprocating type clamp plate's lower surface is equipped with and is used for holding the recess at the top of gasbag, the top surface and the bottom surface of gasbag all can be planar.

The balloon may be cylindrical (circular in cross-section) or square (square in cross-section), or may be of other suitable shapes.

Referring to fig. 1 and 2, the catheter system may be of the prior art and, for example, may generally include an inspiratory tube 30, an expiratory tube 40, and a respiratory coupling.

The air suction pipe is provided with an air suction valve 32 and a flow limiting valve 33, one end (air inlet end) of the air suction pipe is connected with an air outlet of the air bag, and the other end (air outlet end) of the air suction pipe is connected with an air suction port (air suction interface or air suction limb) of the breathing coupling piece.

The expiratory tube is provided with an expiratory valve 42 and a PEEP controller 43, or is provided with an expiratory valve but not provided with a PEEP controller, one end (air inlet end) of the expiratory tube is connected with an expiratory port (an expiratory interface or an expiratory limb) of the respiration coupling part, the other end (air outlet end) can be a free end and is communicated with the atmosphere, or the expiratory tube is inserted into a filter water bottle 49, and the port is positioned under water so as to absorb liquid particles or other pollutants in the gas through the water and be beneficial to purification.

The filtering water bottle can be internally provided with a plurality of layers of filtering nets so as to improve the purifying effect.

When the filtering water bottle is also used as a PEEP controller, the air exhaust pipe is provided with an air exhaust valve, the discharge end of the air exhaust pipe is inserted into the water in the water bottle, the air exhaust pipe is usually positioned at the lower part of the water body in the water bottle and below the filter screen (if the filter screen is arranged), the water in the water bottle can be water with corresponding disinfection effect, and the air exhaust pipe or other proper positions are provided with air exhaust check valves to prevent disinfectant in the water bottle from volatilizing and reversely flowing into a human body. The water level in the water bottle and the height of the discharge end of the exhaling pipe (especially the height difference between the water level and the discharge end) as well as the resistance characteristics of the filter screen in the water bottle (such as the hole density of the filter screen, the material of the filter screen, the number of the filter screen layers and the like) can be adjusted to adjust or control the resistance of the water bottle, and further control the PEEP.

The water bottle can be provided with scales so as to check the water level height and the insertion depth of the discharge end of the expiratory tube, a sleeve pipe used for inserting the expiratory tube can be fixedly arranged in the water bottle, the sleeve pipe can adopt one section of vertical tube, the inner diameter of the sleeve pipe is adapted to the insertion section of the expiratory tube, so that the expiratory tube can be conveniently inserted manually, the expiratory tube cannot be automatically loosened, an upper port of the sleeve pipe used for inserting the expiratory tube can be in an inverted cone shape, and the inner diameter is large and small in the upper part so as to facilitate the insertion of the expiratory tube.

The sleeve for inserting the exhalation tube can be fixedly mounted in place on the inner wall of the water bottle.

The respiratory coupling piece is a face mask 1 or an artificial airway 2 (such as a tracheal cannula), and the face mask is a special face mask of a breathing machine and comprises any form of a whole face mask, a nasal mask or an oronasal mask.

The PEEP controller is a damping element or a PEEP valve (control valve or shut-off valve) which, when a filtered water bottle is provided, can register the resistance of the water in the filtered water bottle.

The inhalation valve and the exhalation valve are both electric control valves so as to be controlled by a control device

Referring to fig. 2 and 5, compared to the first breathing machine, the second fool-type bi-level breathing machine of the present invention mainly comprises an additional intermediate chamber 60, and further comprises an air source device and a humidifier 51. The air source device can be the same as that of the first respirator, and the related conduit system can also be the same as that of the first respirator.

Specifically, the air supply device includes corrugated gasbag 10 and reciprocal actuating mechanism, the one end fixed mounting of gasbag is on gasbag mount 22, and the other end is connected reciprocal actuating mechanism's reciprocating type clamp plate 21, reciprocal actuating mechanism is equipped with and is used for the drive reciprocating type clamp plate reciprocating motion's motor drive, reciprocating type clamp plate's direction of motion with the axis direction of gasbag is the same, the gasbag is equipped with gas outlet 11 and air inlet 18, the gas outlet of gasbag is equipped with the check valve of giving vent to anger, the air inlet of gasbag is equipped with the check valve that admits air, the quantity of air supply device is one or two, for example, can include first air supply device and second air supply device. When two air source devices are adopted, one air bag is compressed, the other air bag can be stretched or reset, so that air can be stably supplied to the intermediate bin, in this case, the intermediate bin can be always in a stable pressure state, the coordination between the air bag action and the respiration is not required to be considered, and the control process is simplified.

The intermediate bin 60 is provided with an air inlet and an air outlet, and the number of the intermediate bins can be one or a plurality of the intermediate bins connected in parallel. The air inlet of the intermediate bin is connected with the air outlet of the air bag 10 of the air source device through a conduit;

the humidifier 51 is provided with an air inlet and an air outlet, the air inlet of the humidifier is connected with the air outlet of the intermediate bin through a conduit, and the air outlet of the humidifier is connected with an air suction conduit through a connecting conduit 38;

the intermediate bin is a high-level pressure bin and is used for providing positive pressure for air suction.

The intermediate bin can adopt a suitable form such as a gas storage tank, a gas storage bottle, a gas storage box and the like.

The top of the intermediate bin is preferably provided with a pressure display device 65.

The pressure display device is preferably provided with a cylindrical display shell and a piston 68 matched with the display shell, the display shell is hermetically installed at the top of the middle bin, the main body part of the display shell is positioned outside the middle bin, the piston is positioned in the display shell, the periphery of the piston is in sliding sealing fit with the inner wall of the display shell, a matching mode between an air cylinder and an air cylinder piston can be adopted, an upper spring 66 is arranged above the piston, a lower spring 67 is arranged below the piston, the upper spring and the lower spring are both helical springs, the upper end of the upper spring is connected with an upper spring support positioned in the display shell, the lower end of the upper spring is connected with the upper surface of the piston, the lower end of the lower spring is connected with a lower spring support positioned in the display shell, the upper end of the lower spring support is connected with the lower surface of the piston, and the upper spring support and the, the lower port of the display shell is communicated with the middle bin, the upper port of the display shell is communicated with the atmosphere outside the middle bin, and a vertical transparent display window (a transparent shell) is arranged on the display shell so as to check the height position of the piston. And performing pressure marking, such as upper limit pressure marking and lower limit pressure marking, corresponding to the position of the piston beside the transparent display window, wherein an indicating line corresponding to the pressure marking is displayed on the piston in a color mode, and the marking corresponding to the indicating line is the pressure in the intermediate bin.

The calibration of the pressure display device can be performed according to the prior art.

The top of the intermediate bin may be provided with a safety valve (e.g., a spring-loaded relief valve) 64 or the like in accordance with the prior art.

The intermediate chamber may be provided with an oxygen inlet, which is usually provided with an oxygen inlet control valve, and the oxygen inlet is connected to an oxygen source 55 through a conduit, such as an oxygen tank or a household oxygen generator, and a pressure reducing valve 54, a flow meter, etc. may be provided on the gas path between the oxygen inlet and the oxygen source according to the prior art and actual needs. Therefore, oxygen can be added into the intermediate bin according to the requirement, the oxygen content is improved, and for common household application occasions, the input of the oxygen can be determined according to experience or a previous experimental result, so that the equipment simplification is facilitated. If necessary, an air flow meter, an oxygen concentration on-line detector and the like can be arranged to accurately calculate, detect or control the oxygen content in the intermediate bin.

The air inlet and the oxygen inlet of the middle bin can be arranged adjacently to avoid an overlarge interval, one or more vertical baffle plates can be arranged in the middle bin, each baffle plate comprises an upper baffle plate 62 and a lower baffle plate 61 or is any one of the upper baffle plate and the lower baffle plates, the edges of two sides of each baffle plate are sealed with the inner wall of the middle bin, the upper edge of each upper baffle plate is sealed with the top of the middle bin, a gap is reserved between the lower edge of each upper baffle plate and the bottom of the middle bin to form an air flow channel, the lower edge of each lower baffle plate is sealed with the bottom of the middle bin, and a gap is reserved between the upper edge of each lower baffle plate. The upper baffle plate and the lower baffle plate (if a plurality of baffle plates are arranged at the same time) are alternately arranged, and the air inlet (including the oxygen inlet, if any) and the air outlet of the middle bin are respectively positioned at two sides of the baffle plates (including the baffle plate combination), so that oxygen and air can be effectively mixed in the process of passing through the baffle plates.

The air inlet of the humidifier is provided with an air entraining pipe 52 which is opened below the water surface of the humidifier, the air entraining pipe is usually opened at the bottom in the humidifier and introduces air into the water of the humidifier, the air impacts the water after coming out of the air entraining pipe, mass transfer between water and air is increased, the humidity in the air is improved, and the air outlet of the humidifier is arranged at the upper part (usually the top) of the shell of the humidifier.

The humidifier is characterized in that a filter screen layer 59 is arranged in the humidifier, the filter screen layer is composed of one or more layers of horizontal filter screens and is located between the air outlet of the humidifier and the water surface of the humidifier, when air emerging from water passes through the filter screen layer, on one hand, the filter screen intercepts water drops carried in the air, and on the other hand, the water attached to the screen can further contact with air, so that the concentration of gaseous water contained in the air is improved, and the concentration of liquid water contained in the air is reduced.

The humidifier can be provided with a water filling port and a discharge port according to the prior art, and water can be added or discharged according to the requirement in the working process. For example, the humidity of the outlet air is adjusted by changing the height of the water level in the humidifier, adjusting the contact and mass transfer capacity of the air and the water.

The suction catheter 30 is provided with a water accumulation cup 35, the suction catheter is provided with a downward water accumulation bend, the suction catheter is divided into two sections at the water accumulation bend, the water accumulation cup is positioned at the lower end of the water accumulation bend and is connected with the suction catheters positioned at the two sides of the water accumulation bend, gas flows into the water accumulation cup through the suction catheter at the air inlet side of the water accumulation cup, gas-liquid separation is realized in the water accumulation cup and then flows into the suction catheter at the air outlet side of the water accumulation cup, and the patient ends of the suction catheter and the exhalation catheter are both connected with a breathing mask or catheters used for being inserted into the body.

The patient ends of the inspiratory conduit 30 and the expiratory conduit 40 are both connected to the breathing mask 1 or the conduit 2 for insertion into the body.

When two air supply devices are provided, the motor drive of the first air supply device and the motor drive of the second air supply device share the same drive motor (see fig. 3) or are provided with respective drive motors.

The various containers (air bag, intermediate bin, humidifier) and ducts related to the breathing gas can be disposable articles, and can also be reusable articles after disinfection, but the disposable articles are preferably selected based on the difficulty of family disinfection.

According to the prior art, required control valves can be arranged on corresponding gas circuits (a guide pipe, a gas inlet, a gas outlet and the like) to carry out breathing switching control and the like, and corresponding thermometers, flowmeters, pressure gauges and oxygen concentration meters can be arranged on corresponding gas circuits and containers to carry out detection on corresponding parameters so as to monitor the working process and provide data for related control.

A matched control device can be arranged according to the prior art to carry out related control.

For example, to the utility model discloses a first breathing machine can set up real-time humidity detection device and ultrasonic atomization device, according to the change of humidity condition and patient's respiratory track humidity in the on-the-spot air, humidity inductor automatic triggering ultrasonic atomization device to reach the normal humidity of patient's respiratory track the inside.

The air bag of the respirator can be arranged according to the requirement and is controlled by an automatic expansion and compression device. It is adjustable in ventilation frequency of 8-30 times/min according to the required air volume of the specific patient body weight.

The automatic expansion and compression device can be completed by switching on the power supply in the forward and reverse directions of the telescopic motor controlled by the single board machine.

The air bag is made into an accordion box shape (namely, a corrugated shape), and is driven by the telescopic motor to reciprocate, so that the aim of air inlet and outlet is fulfilled.

Can be adjusted by a telescopic motor and can be adjusted within 8-15 ml/kg according to the demand of tidal volume.

Intake airflow rate: the requirement of the patient can be determined according to the pressure in the air bag, and the pressure is controlled to be 40-100 liters/minute.

Through the invention, the breathing machine achieves the following indexes:

1) oxygen supply concentration

Calculating the formula: 21+4 oxygen flux.

Low oxygen concentrations (24-40%), appropriate for COPD patients;

the medium concentration (40-60%) is suitable for oxygen deficiency and carbon dioxide retention;

the high-concentration oxygen (more than 60 percent) is suitable for CO poisoning, cardiogenic shock and large-scale operation of severe trauma, and the high-concentration oxygen is inhaled for not more than 1 to 2 days, otherwise, the oxygen poisoning is easy to occur.

2) Tidal volume

The concentration is set to 8-10 ml/kg, and 10-12 ml/kg, and the maximum concentration is 10-15 ml/kg for patients with poor lung compliance such as ARDS, pulmonary edema, and atelectasis.

3) Respiratory rate

Generally 8-14 times/minute are chosen, and if the patient is allowed to gradually adapt before weaning, the breathing rate can be reduced to 2-10 times/minute.

4) Inspiratory to expiratory time ratio

Inhalation in obstructive ventilatory disturbance: the call rate is 1:2-2.5, and the slow frequency is matched;

in restrictive airway obstruction, inhalation: call is 1:1.5, and is matched with a faster frequency.

5) Pressure support

This parameter is set when using the pressure support ventilation mode,

mild lesions in the lung: 15-20cm H₂O；

Moderate lesions: 20-25cm H₂O；

Severe lesion: 25-30cm H₂O。

The ventilator can adopt the selection of ventilation modes according to the specific conditions of patients:

1) auxiliary/control mode (A/C)

The volume control mode is a ventilation mode commonly used by adults and can ensure the ventilation volume; pressure Control Ventilation (PCV) is commonly used by children, has constant pressure and is not easy to cause barotrauma of the lung.

2) Simultaneous intermittent commanded ventilation (SIMV)

The ventilation capacity can be ensured, the respiratory muscle can be exercised, and the traditional method is often used as an overmeasure before the machine is taken down.

3) Pressure Support Ventilation (PSV)

The ventilator can provide a certain pressure support for the patient after the patient breathes autonomously to trigger the ventilator, so as to achieve the purpose of improving the ventilation volume.

4) Continuous Positive Airway Pressure (CPAP)

On the basis of spontaneous respiration of a patient, a respirator applies certain pressure to both inhalation phases to open alveoli, and the respirator is suitable for lung compliance decline, pulmonary atelectasis, obstructive sleep apnea syndrome and the like.

5) Positive End Expiratory Pressure (PEEP)

Maintaining positive pressure in the airway during expiration at a predetermined positive pressure level, typically maintaining a final positive pressure of 5-10 cm H₂And O. Because normal persons also maintain a positive pressure at the end of expiration due to glottic closure, called physiologic PEEP, which is typically between 1-3cm of water, primarily to maintain functional residual capacity and prevent alveolar collapse. After the patient is intubated, the physiological protection effect is lost, so that 1-3cm H can be used for mechanical ventilation₂PEEP of O, but not too high, is used to prevent bullae and barotrauma, and this model is mainly used in ARDS and pulmonary edema patients.

It will be appreciated that the relevant data is equally applicable to the second ventilator of the present invention for a treatment regime.

It will be appreciated that there are several common or general technical means for both ventilators disclosed in the present invention, and that for the sake of brevity, some of these technical means or embodiments thereof have been described in the present specification only in relation to one ventilator embodiment, but these technical means or embodiments thereof can equally well be used in another ventilator to achieve the same function or purpose.

The preferred and optional technical means disclosed in the present invention can be combined arbitrarily to form a plurality of different technical solutions, except for the specific description and the further limitation that one preferred or optional technical means is another technical means.

Claims (10)

1. Fool-type double-level respirator is equipped with the air supply device, and its characterized in that the air supply device includes ripple gasbag and reciprocating drive mechanism, the gasbag is the ripple gasbag, and its one end fixed mounting is on the gasbag mount, and the other end is connected reciprocating drive mechanism's reciprocating type clamp plate, reciprocating drive mechanism is equipped with and is used for the drive reciprocating type clamp plate reciprocating motion's motor drive arrangement, reciprocating type clamp plate the direction of motion with the axis direction of gasbag is the same, the gasbag is equipped with gas outlet and air inlet, the gas outlet and the air inlet of gasbag are equipped with respective check valve respectively, the gas outlet of gasbag is used for connecting conduit system's breathing pipe.

2. The foolproof bi-level ventilator of claim 1 wherein said conduit system comprises an inspiratory conduit, an expiratory conduit and a respiratory coupling, said inspiratory conduit having an inspiratory valve and a restrictor valve, one end of said inspiratory conduit being connected to the outlet of said air bag and the other end of said inspiratory conduit being connected to the inspiratory port of said respiratory coupling, said expiratory conduit having an expiratory valve and a PEEP controller, or having an expiratory valve but no PEEP controller, said expiratory conduit having a discharge end at one end and an expiratory port at the other end of said expiratory conduit.

3. The foolproof bi-level ventilator of claim 1 or 2, wherein said motor driving means is a linear motor, the mover of said linear motor being fixedly connected to said reciprocating platen; or, motor drive includes gear motor, install the bent axle on gear motor's the output shaft, the bent axle passes through the connecting rod and connects reciprocating type clamp plate, the connecting rod with the bent axle with reciprocating type clamp plate's connected mode all is articulated, forms bent axle connecting rod drive mechanism, reciprocating type clamp plate is equipped with linear guide.

4. Fool type double-level respirator, its characterized in that includes:

the air source devices comprise one or more corrugated air bags and reciprocating driving mechanisms, the air bags are corrugated air bags, one ends of the air bags are fixedly mounted on an air bag fixing frame, the other ends of the air bags are connected with reciprocating pressing plates of the reciprocating driving mechanisms, the reciprocating driving mechanisms are provided with motor driving devices for driving the reciprocating pressing plates to reciprocate, the motion direction of the reciprocating pressing plates is the same as the axis direction of the air bags, the air bags are provided with air outlets and air inlets, and the air outlets and the air inlets of the air bags are provided with corresponding one-way valves;

the middle bin is provided with one or more air inlets and one or more air outlets, and the air inlets of the middle bin are connected with the air outlets of the air bags;

the humidifier is provided with an air inlet and an air outlet, the air inlet of the humidifier is connected with the air outlet of the intermediate bin through a conduit, and the air outlet of the humidifier is provided with an air outlet used for being connected with an air suction pipe of a conduit system.

5. The foolproof bi-level ventilator of claim 4, wherein said motor drive means is a linear motor, the mover of said linear motor being fixedly connected to said reciprocating platen; or, motor drive includes gear motor, install the bent axle on gear motor's the output shaft, the bent axle passes through the connecting rod and connects reciprocating type clamp plate, the connecting rod with the bent axle with reciprocating type clamp plate's connected mode all is articulated, forms bent axle connecting rod drive mechanism, reciprocating type clamp plate is equipped with linear guide.

6. The foolproof bi-level respirator of claim 4, wherein the top of said intermediate chamber is provided with a pressure display device, said pressure display device is provided with a tubular display housing and a piston matching with said display housing, said piston is positioned in said display housing and has a periphery sliding and sealing matching with the inner wall of said display housing, an upper spring is positioned above said piston, a lower spring is positioned below said piston, both said upper spring and said lower spring are helical springs, the upper end of said upper spring is connected with an upper spring support positioned in said display housing, the lower end is connected with the upper surface of said piston, the lower end of said lower spring is connected with a lower spring support positioned in said display housing, the upper end is connected with the lower surface of said piston, both said upper spring support and said lower spring support are fixedly installed in said display housing, the lower port of the display shell is communicated with the inner cavity of the middle bin, the upper port of the display shell is communicated with the atmosphere outside the middle bin, and the display shell is provided with a vertical transparent display window.

7. The fool-type bi-level respirator of claim 4, wherein the inner side of the air inlet of the humidifier is provided with an air-entraining pipe opened below the water surface of the humidifier, the air outlet of the humidifier is arranged at the upper part of the humidifier housing, a filter screen layer is arranged in the humidifier, and the filter screen layer is composed of one or more layers of horizontal filter screens and is positioned between the air outlet of the humidifier and the water surface of the humidifier.

8. The foolproof bi-level respirator of claim 4, wherein said air supply means are two in number, and both of said air supply means share a single drive motor or are provided with respective drive motors.

9. A foolproof bi-level ventilator as set forth in any one of claims 4 to 8, wherein said intermediate chamber is provided with an oxygen inlet port connected to an oxygen outlet port of an oxygen source.

10. The foolproof bi-level ventilator of claim 9, wherein said intermediate chamber is internally provided with one or more vertical baffles arranged in sequence, and wherein said air inlet of said intermediate chamber and said oxygen inlet and said air outlet of said intermediate chamber are positioned on either side of said one or more baffles, respectively.

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