JPS6187567A - Respiration apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is a respiratory gk device (respiratory app).
aratus) s More specifically, a ventilator (ventilator) is used for a limited period of time for a single chewer.
ator ) or resuscitator
r ), which relates to a rechargeable portable breathing apparatus that can be used as a respirator.

Numerous types of n lPu HIf are known, but the present invention relates to its original use [1] relating to a device d, which is generally referred to as a resuscitation device d or/and a chivalry device, depending on the It is.

As used herein, resuscitation equipment refers to a person who has stopped breathing.
Similarly, a ventilator is defined as a positive pressure device, other than a resuscitation device, used to aid in ventilation of the lungs (11). Most of the known packaging devices are designed for use within hospitals.
This has been developed. It is driven by electric power supplied from the hospital's power supply system, and is also configured to utilize the hospital's sling supply system.

Although some portable resuscitation devices have been known,
Since these devices usually use oxygen cylinders, they have the disadvantage that the device size is large compared to the 11 m supply capacity. Additionally, devices that use bottled refills have a lower storage capacity than devices that use chemical oxygen generators.
Life is relatively short.

Accordingly, it would be desirable to develop a portable resuscitation device that has an acceptably high quality ratio and a relatively long shelf life.

Known portable resuscitation devices are designed to operate only in a fixed periodic mode. That is, a certain amount of air and oxygen mixture is forced into the patient's lungs for a certain period of time, and one step is taken to allow that air and oxygen mixture to be expelled during a certain period of time. It has become. This time is selected to approximate the normal breathing cycle.

A known portable ventilation device is a demand cycle (dema
nd cycle). That is, each inspiratory phase of breathing is determined by the patient's inspiratory effect E.
This is how it is started. Demand mode ventilators are not suitable for use as resuscitation equipment. This is because in this case the patient cannot trigger the operation of the device.

Similarly, limited cycle resuscitation equipment is not recommended for use as a ventilator or for self-initiated breathing. This is because it is harmful if the breathing cycle does not match the physiological needs of the patient.

Can the eave act as a ventilation device or as a resuscitation device? It would be desirable to develop a portable device that operates in a timed cycling mode in the lt barking state, and that can intermittent this cycle with the patient's inhalation or expiration movements.

One object of the present invention is to overcome the drawbacks of previously known devices by providing a portable telephone 11! # To provide equipment.

More specifically, the object of the present invention is a complete portable breathing apparatus for a patient of the type with a chemical M bulk generator of 2g, which during exhalation is supplied with F11 from a chemical M generator. In response to this, the chemical oxygen generator 1 has a rigid pressure accumulator or accumulator to replenish the tII energy supplied by the chemical oxygen generator 1, and has a long shelf life and satisfactory operating efficiency. The purpose is to provide equipment.

The purpose of the pond of the present invention is a complete portable breathing apparatus for a single person of the type described above, equipped with a venturi pump and a physitter, to supply filtered air! ! By mixing it into the oxygen generated by the oxygen generator, the operating period can be extended, and the oxygen supply M
V2I where the ratio of the device to r is at an acceptable level
The objective is to provide the following.

Another object of the invention is to provide an air-oxygen mixture to the imager for an initial limited period of time, and then to supply an air-oxygen mixture to the imager for a subsequent limited period of time, such that the patient's breathing cavity is supplied with an air-oxygen mixture for a limited time. Allowing the Qi to be exhaled, the Φ person follows his or her own breathing cycle into the device.
It is an object of the present invention to provide a complete portable breathing apparatus for a large number of patients of the type having an operating system which allows priority to be given to the inhalation or exhalation cycle.

The illustrated embodiment will be explained in detail below.

FIG. 1 shows a system diagram of a breathing apparatus according to an embodiment of the present invention.

This device includes a mask 1o, a head harness 121, and is worn by one person. 4 and trachea 1
Partially shown as 6.

In this breath! Even more drunk: A Kutsumugi 18, sending hand] 9
20 and fluid actuation control means 24.

The air supply means 20 is arranged between the r* bulk supply source 18 and the mask 10, using the mask 10 and the harness 12.
It includes a valve means or distribution valve 22 capable of switching between the air level 1d and the intake position, and other fluid elements. If desired,
An Iv* supply pipe 25 may also be provided.

Valve 22 acts as a two-position flow directing means.

The rfIg source 18, which also acts as a power source, is preferably a mum salt cand tv.
chemical I11? It consists of an elementary generator. Chlorate candles are known and are disclosed, for example, in US Pat. No. 2,507,450. The candle emits oxygen through the outlet tube 26 during its operation.

Out D%i? Just downstream of No. 26, Venturi Bonde has been abandoned. The pump includes a venturi 2B, which is oriented such that the exhaust gas from the chlorate candle passes through a jet orifice 27 and a venturi 28.

According to a well-known source, the narrow squeezed part of the venturi! ! As the element passes through, its pressure decreases. child. The pressure drop is
In the surrounding air as shown by arrow 30? The inlet or suction part 3 of the venturi 28 via the a-type charcoal filter 32
It is used to introduce 3.

The purpose of filter 32 is to remove toxic or harmful substances from the surrounding air.

The filter has an inlet open to ambient air and an outlet communicating with the suction of the pump. Is it possible to install a check valve at the inlet of the filter so that the air only flows in the direction of the arrow 3 degrees? You can also strain it.

The filtered air is mixed with oxygen downstream of the jet oriice 27, and this mixture is sent out through the discharge part 33a of the pump 28. A pressure or flow control valve 34 is located downstream of the pump to ensure that a relatively constant pressure of the mixture is provided to valve 22.

The filter 32, the pump 2, the control means 24, and the generator are all contained within a housing 8, which is indicated by a dotted line.

The distribution valve 22 is basically a 2-position, 3-boat directional control valve that is normally held at the intake position shown in Figure 1 by the action of the spring 35, but can be switched to the exhalation position by the pressure inside the valve It is.

When this valve 22 is in the illustrated suction position, gas from the oxygen generator flows through the valve 22, the line 38, the check valve 40, and the line 4.
2. The air is sent to the mask l○ through the check valve 44 and the conduit 46, and is sent through the patient's trachea 16 to the respiratory cavity 14. This flow continues until the valve 22 is switched to the aerobic position li& by the pressure in the pilot tube 36.

When valve 22 is in the exhalation position, gas from the oxygen generator passes through valve 22, line 48, check valve 50, and line 52 to an accumulator.
r) sent to 54. When the pressure within the accumulator 54 exceeds its design level, the excess pressure is vented to the atmosphere via the relief valve 56.

Line 52 is connected to line 381 by line 51 with compensated check valve 60! d is connected. Valve 60 is pilot q connected to ambient atmosphere by bleed VT64.
Compensated by if62.

Other fluid elements in the oxygen transport system include positive end exhaust pressure
There is a pressure-compensated relief valve 66 as a pressure) valve, which is connected to the line 42 via a line 67 and a pilot pipe 68, and to the line 51 via a pilot pipe V69. The pilot tube 69 is
It also communicates with the atmosphere via a bleed pipe 70.

In FIG. 2, the exhalation pressure is represented by water pressure 001. Finally, a compensation exhalation valve is provided as a pressure-compensated check valve 72, which check valve 2 is compensated by a pilot pipe 74 extending from the line 42. The check valve 44 and the pressure compensated check valve 72 form a compensated exhalation/inhalation valve and are typically attached to the mask at the end of the outlet tube 42.

The illustrated control means 24 are pneumatically actuated and include a fluid flip 70 and a slide 76. The inlet of this flip-flop is grafted via line 78 to an oxygen source. As this flip-flop, Norpren
) Moji-L-A/4 Fl'i'-202,000
There is. The output of the flip-flop is connected to line 80 or 82.
It can be extracted from either. These pipes 8
0.82 are connected to the atmosphere through apertures 8] and 83, respectively.

The pilot pipe 36 is connected to the pipe V182 on the upstream side of the throttle 83 and extends to the control valve 22. Flip-flop 76# moss input control tubes 84,86 are also provided.

As is well known, when the bistable flip-flop is subjected to pressure in the control tube 84, the output is transferred from the control tube 82 to the control tube 82. In the same machine, when this flip-flop 76 is subjected to pressure in tube 86, the output is transferred from tube 82 to tube 80.

The manual controls t84, 86 are each connected via a suitable valve mechanism to the associated output line 80,82. This valve mechanism includes a timing module (timinPm
Fluid timing modules are known, such as the hoop V y (
Norgren) Delay module L-5 Tr) 02
] 4-000, which is a combination of a fluid resistance circuit and a Schmitt trigger (8ohmltttrIFger), and has a variable aperture on the input side.

The fluid timing module flows the control fluid through the variable orifice and the output flow is triggered when a predetermined amount of fluid enters the module 8B, 89. Accordingly, the variable orifice 88 provided between conduits 80 and 84 can be adjusted to trigger output flow after two seconds. Similarly, the variable orifice 8B between tubes QB2 and 86 can be knotted so that the output flow is triggered on the 4 second bale.

By using such a timing module, the operation of the control valve 22 can thus be controlled. However, as mentioned above, the patient's physiological needs may differ from the time preset by the timing module. Therefore, a corresponding control means is added.

The control means 90 normally restricts flow from lines 80 to 84, but opens when the pressure exceeds a predetermined limit. The control means 90 overrides the operation of the timing module under certain circumstances, as described below.

Similar control means 92 could also be provided between conduits 82 and 86. This control means 92 is opened when the pressure within the mask falls below the pressure set by valve 66 due to the patient initiating a rotation movement.

The control means "90, 92 are pilot-operated two control means," respectively.
Shown as position M2 boat directional control valve. valve 90
is normally held in the closed position by a spring, but is opened when the pressure within the pilot tube 94 exceeds the set value set by the adjustable spring. The valve 92 is also normally held in one closed position by the sling, but when the patient begins to perform a g-and-breathing motion and the pressure inside the mask drops below the level determined by the valve 66, this barking becomes virobic. )W
96.98, valve 92 is shifted to its open position.

Although a two-position directional control valve is shown, other control means 1 may be used, such as a monostable flip-frog connected to a suitable pressure relief valve. Also, the control means 76.8
8.89.90,92 can also be replaced with an air & mechanical control system.

Next, I will explain the operation, but now #1 cable #salt cand/L/
Assume that 18 is started and the output of the fluid module is on the 8° side of the line. Distribution valve 22 is held in the position shown by spring 351. Gas from acid accumulator 18 passes through venturi pump 28 where it is mixed with air passed through filter 32. The pressure of the air-fuel mixture exiting the venturi is controlled by a regulating valve 34tC.

As shown in FIG. 2, the 4-adjusted pressure is such that a peak pressure of water column 35α is delivered to the patient. but,
Higher pressures may be desired.

Gas from valve 34 is supplied to valve 22.9F3B, check valve 40,
The patient 141c is sent through the mask 1o.

This gas flow is stopped until the set time of the timing module between '1f80 and 84 elapses or the control means 9
Continue until 0 is shifted to cause gas to flow from tube 80 to 84. ■The normal inspiration time is shown in Figure 2 l″c7J<
Similarly, normal expiration time is indicated by E, and IL normal I.
The I+1 sucking cycle is skipped by TC.

The pressure at which the valve 90 responds is f't=-, as shown in FIG. V-clause TiJ fihi, this valve responds to one of two conditions in Oti. i.e. when the patient is about to gag or when the patient's P.
This is when the P suction cavity is filled to the set pressure.

In either case A), the mixture of air and air passing from the valve 3B through the check valve 4° connects t42 and the controller 90 to A!
Since there is no place to go other than the pilot %f94 that I will give,
This increases the pressure within t94, thereby increasing the pressure within controller 90.
is operated to allow flow from tube 8o to tube 84 and shift to tube 82, which is the output of one-fluid flip-flop 76. This pressure increase is shown at 95 in Figure 2. This pressure increase causes the following conditions.

First, the valve 22 is switched from the illustrated position by the pressure of 'f36, and the acid 111B is sent from W4B to the 7-cumulator 54 through the valve 22. This shortens the intake time SI and therefore the period so. Since the output of a chlorate candle is continual over a period of time, the oxygen generated must be stored or picked up if not used by the patient. 7 The storage device is a means for storing the oxygen generated by the oxygen generator for later use by the patient.

When valve 22 is in the exhalation position, gas from the oxygen source is pumped to the accumulator under normal operating conditions, and since valve 60 is compensated through valve 62, it is not pumped when tube 4 is pressurized. Releases oxygen and air.

At the same time, conduits 3B, 51. The pressure in pilot tube 64 is released to the atmosphere via bleed W70. This causes the pressure compensation leaf valve 66 to reduce the pressure in the pilot tube 74 compensating the exhalation valve 72.

Meanwhile, the patient exhales air through valve 72 until the toe rFf pressure (PFJP) is achieved. This pressure is determined by the adjustable valve 66# and is determined from 0 to 2 water columns (
') is variable between ca. Once this pressure is reached, no more air will be exhausted from the valve 72.

Normally, exhalation is performed during rapid exhalation (within 1 second), and the remaining exhalation time (for example, 3 seconds) is a rest period at 1111, when inhalation begins.

Intake operation is M' to 1ttl of VB2 and 86! timing module 8B, 89.

That is, the setting time of this timing module is Iu
When the expiration occurs, fluid is introduced into 1#86, shifting the output of the fluid arrest flop to tube 80 and ending the exhalation cycle. Alternatively, if the patient attempts to inhale 1, as shown by the pressure drop 97 in FIG. 2, this also causes the control means 92 to open.

That is, when the patient inhales, the pressure in the pilot tube 96 decreases below the pressure in the pilot tube 98, causing the valve 9 to close.
2 is shifted to the open position, resulting in a shortened exhalation cycle SE.

When power is returned to line 80, valve 22 is shifted to position rM as shown in Figure 1. Additional oxygen and air is then introduced into mask 1c from venturi 2 and 7 cumulators. At this time, the pressure in line 62 is vented to the atmosphere via bleed line 64 and check valve 60 is no longer compensated by line 62, so that valve 60 is opened. g3B
, 51.69 closes valve 66 and prevents gas from escaping from this valve.

By allowing the patient's natural physiological needs to perform the inspiratory/expiratory cycle, the caregiver can meet other needs. Conventional portable air-controlled ventilation resuscitation devices cannot automatically lengthen or shorten timed inspiratory/expiratory cycles as needed, and must be manually activated at the patient's request. did not become.

One of the advantages of the device of the invention is that the control means are operated solely by the output of the source at fl. In fact, chlorate candles have very reliable shelf lives, for example 10 years or more. Therefore, by using the output for cyclic operation and pressure compensation of the device,
A breathing apparatus with long storage life<r=high adaptability is obtained.

Another embodiment of the present invention is shown in FIG. Although there are many differences between the embodiment of FIG. 1 and the embodiment of FIG. 3, two differences should be noted first. One of them is that in the embodiment shown in FIG.
The embodiment of FIG. 3 uses an air knitted fabric control element.

Another difference lies in the location of the valve means. In FIG. 1, the two-position valve is located downstream of the venturi pump, whereas in the embodiment of FIG. 3, this valve is located upstream of the venturi pump. It is deployed in

In FIG. 3, the various components of a single patient breathing apparatus are also housed within housing 10B.

A mask 110 is provided on the outside of the housing and is attached to the patient by a head harness 112. The patient is shown as respiratory age 114 and recovery tube 116.

As the main t1+1 configuration required ice within 10 days of housing.

Power supply i1 [iil 1 B, 74tvl-1 in the sky
2('), yt/pump means 122, inlet/outlet line 12
There is an accumulator 124 with 6, a two-position flow direction control means 128, and a conduit interconnecting these parts. Details of these conduits 1 will be described later.

Furthermore, primary control means are provided within the housing for displacing the valve between a first position 11 and a second position based on predetermined time intervals. This control means will also be described later. Furthermore, patient priority system? MJ (patient of
erride contrr+1) means are provided;
This allows the injured person to override his or her breathing or inhalation action or g1 control means.
)be able to. An outlet tube 150 extends from the pump means 22 to the mask 110.

When the device of the present invention is used as a portable unit, the power to operate it is supplied solely from an oxygen generating source such as a chemical #1 accumulator 132, preferably an I41 accumulator candle. A line 136 from the oxygen generator is provided with a check valve 134 forming part of the power supply, a gas filter 135, and this oxygen supply line 136 terminates at a connection end 71.

As with the embodiment of FIG. 1, a conduit 140 is provided connecting the outlet or supply conduit 136 from the oxygen generator to an external source of pneumatic oxygen at a suitable pressure, as required. A connector 138 is provided at 140 on the outside of the housing 108, and a check valve 142 is inserted therein. Tube 140 is connected to oxygen supply tube 136 at connection point J2.

The purpose of the check valve 1"34.142 is to prevent backflow to the oxygen generator and fittings.

The two-position valve 128 has nine s! -) pH, PI2, PI
3, P21, P22, P23, P31, P32, P33
is popular. When the spool 129 of the valve 128 is in the normal position shown in the figure, the spool 129 is in the normal position shown.
2 and P23 and P32 and P33 are connected respectively, but P11%P21 and P31 are connected to spool 12
It is blocked by 9. Bo) pH, P23. P
31 is not connected to a pipe line and is open to the atmosphere.

When valve 128 is V-lifted to the second position, boat P12
is connected to the atmosphere and opened to the atmosphere, and
21 is connected to the boat P22, and the boat P32 is connected to the boat P31! & is then opened to the atmosphere. Boats P13, P23, and P33 are blocked internally, and boat P2
3 is opened to the atmosphere.

Next, the pump means 122 will be explained in detail.

The pumping means is a venturi pump and includes a hollow member 144 and a venturi 146 disposed therein. A jet orifice "14" is provided upstream of the venturi 146, around which the pump's suction 5150 surrounds.

The downstream side of the venturi constitutes a discharge section 152 of the pump, and this discharge section 1 is provided with a check valve 154 and a flow control valve 156. The purpose of check valve 154 is to prevent backflow of gas through the pump and the purpose of control valve 156 is to regulate pump flow k.

Pump 122 is equipped with II number of baud) PI-P7,
Various pipes are connected to these boats.

For example, the discharge pipe 130 is connected to the boat P1#.

Filter 120, which is schematically illustrated, is a canister or cartridge containing active disease and/or other components that can filter out components present in the air. This persimmon filter typically has an outlet to which one boat of the pumping means is screwed or otherwise secured, in example P4. Additionally, the filter is equipped with a check valve 162 that can prevent backflow of gas through the filter.
I'm listening to 0.

A filter 120 is disposed in the housing and the person II
160 and an inverted valve 162 are placed near the perforated wall to draw atmospheric air into the filter when suction is provided at the outlet 158tlln.

Power supply i1G+118, accumulator 124.1
26, valve 128, and pump 122 are connected to each other by a pipe line. That is, the first supply line 164 extends from the connection point Jl to the port P13 of the valve 12B, and further extends by tlt from the port PI3 to the port P2 of the pump 122. B) P2) 1 is located upstream of the seat orifice 7148.

Therefore, when the valve 12B is in the illustrated position, the first supply 1t
164 connects power source 118 to pump 122.

When the valve 128 is in the other position, the second supply 1
i166 connects from connection point Jl to valve 128 boats P21, P
22 to the accumulator connection point J3. The second supply pipe therefore now connects the oxygen source 11B to the accumulator 124,126. The check valve 168 is opened to 1166 ciR, and the pipe 1 is removed from the accumulator 124.
66 to block the flow of gas to boat P22.

Once the valve 128 is in the position shown, a third supply pipe 170 extends from the connection point J3 of the accumulator 124 to the boat P33 of the valve 128 and further from the boat 32 to the pump 122.
(Bo) has been extended to P3.

P3 is operatively connected to the pump section 150 of the pump 122.

A pressure control valve may be provided in the third supply pipe to control the output pressure of the accumulator so that the pressure of the gas sent from the accumulator to the pump does not exceed a certain value. Furthermore, a relief valve may be connected to the accumulator via connection point J3 so that the accumulator does not accumulate slings above the safety pressure.

As is apparent from the figure, the sprue/
When L/129 is in the first position, the second supply pipe 166
is occluded. When the valve spool is shifted to the second position, the first and third supply lines 164,170 are occluded.

The stay Iv129 of the valve 12B is normally held in the first position by a spring, but is shifted to the second device when the pressure in the pilot W exceeds a predetermined level of vgl.

After reaching this first pressure level, the pressure in the pilot tube is lower than or equal to a second predetermined level lower than the first level.
When this falls, the spoo returns to the first position.

For this purpose, the valve spool has an extension lflow,
A pair of annular grooves are provided at a distance from each other in this extension. These tabs are schematically shown as V-shaped notches 178 in the figures. Detent member 18 pushed by a spring
0 can be engaged with the annular groove 178. The pressure of the spring 182 is set to 1.7559, and the detent member 1
0.75 mm 924 to shift 80 from full 178
Assuming that a force j is required, the valve is placed in the second position In l
To shift this, move 1.75 +0.75 in the direction of the arrow.
A force of kq/d is required.

Therefore, the force of the spring 182 and the detent 180
A first pressure level force equal to the force required to lift IC must be applied through pilot tube 186.

Similarly, in order to shift the valve 128 from the second position to the first position, the pressure in the detent 186 is reduced to a second pressure level, i.e., from the force of the spring 182 on the detent member 18.
The force needed to lift 0 from groove 17 must be less than the candy.

A pilot pipe 186 extending from connection point J4 of pipe 164 to valve 12B forms part of the primary control means. This pilot tube is provided with first and second delay means 188, 190. A volume chamber may be provided for each unit 191, and a common volume chamber 192 may be used as shown.

The function of the first delay means 18B is to ensure that the pressure in the Byron tube 186 between the delay means and the valve 12B rises slowly until a first pressure level is reached. The time required for this can be set by varying an adjustable aperture in the delay means.

Similarly, the delay means 190 determines the length of time required to release the pressure in the pilot pipe 186 between the valve 128 and the study means 190 to the atmosphere once the valve 12B is in the second position. Adjust. The operation of the primary control means will be explained in detail below.

The primary control means establishes the inspiratory and expiratory cycles once power application is initiated, but it is desirable that the patient be able to override the operation of this primary control means. For this purpose, a patient priority control means (patient override control means) is used.
(ntrol means) is provided.

This comforter priority control means is a dump valve (d1] ITIT)
valve) 194 and a switching valve 196. valve 196
is a 3-position 3-boat directional control valve (bow) P8, P9, P
Equipped with IO.

The pressure pipe 198 is Fi! of the oxygen supply pipe 136! From station J5 to port P8, from P9 to Byron) t'l
86! & are extended to continuation point J6. Additionally, a bailey tube 200 and a sensor are provided to actuate the valve 196. This pilot pipe 200 is connected downstream of the check valve 154 of the pump 122.
It extends from to the sensor 202. Further, the pilot pipe 204 is connected to the dump valve 194 from the PIO of the valve 196.
It has been extended to This tIc has a grease orifice of 72o.
6 is provided. The switching valve 196 is normally held in the central position shown by a spring.

The pressure drop at the discharge part of the pump 122 is caused by the pilot 1if2.
00 via sensor 202, valve 196 is shifted to the left, communicating power source 118 to Byron) [204. Similarly, when the sensor 202 detects an increase in the pressure of the pump's discharge &'l( through the bailey tube 200), it shifts the valve 196 to the right position to open the 1
358 to communicate with pilot tube 186.

This breathing apparatus further includes a pressure end expiratory pressure (PEEP) valve mm2.
Equipped with 0B. Since this valve is well known, the details are omitted, but the check valve 1 is connected to the discharge part of the pump via the discharge pipe 210 extending from P6 to the valve 20B.
54, and the port P
One pump is connected via a pilot pipe 212 extending from the valve 7 to the valve 20B.

The mask device is equipped with a pressure compensated inhalation and exhalation valve 214. This valve is also known and includes a mask usually worn by a patient.
This If connection is attached. The inlet side of the valve 214 is directly connected to the outlet pipe 130.

The apparatus of FIG. 3 operates as follows. To start the device, the chemical oxygen generator is activated by the activation bottle mechanism by pulling the cord. When the chemical oxygen generator 132 is started, it emits a pressure of 50 psi. At start-up, valves 128, 194 and 196 are in the normal position shown. m* from oxygen generator 132 is sent to jet orifice 148 via t136, 164 and venturi 14
6# flows in.

The pressure drop as the oxygen passes through the venturi results in a pressure drop in the suction section 150 of the pump. This pressure drop is F
M air is sucked in through the filter 120, this sucked air is mixed with oxygen in the pump 122, and the enriched oxygen-containing air is passed from the pump to the intake/exhalation valve 2.
The mask 11o# is sent via the mask 14. However, if there is a previous exhalation cycle, the accumulator 124 will be filled to the pressure established by the release valve 1) 4, and the accumulator will be discharged from the pressure control valve 172.1f170 to the suction side 150 of the pump 122 via port P3. do.

Since the pressure is relatively constant on either side of valve 20B, this valve assumes the position shown and no gas is vented to the atmosphere. The pressure in pilot tube 200 of sensor 202 is the pump discharge pressure and is not sufficient for sensor 202 to switch valve 196 from its center position.

Intoxication ψ also passes through the pilot pipe 186 from the F& connection point J4, bypassing the delay device 190, and the mouth of the delay device]8B]
The pressure inside the volume chamber 192 is gradually increased by pushing through the variable diaphragm, and the pressure inside the volume chamber 192 is gradually increased. Gradually simplify Luke 186.

When the pressure in this pilot tube 186 exceeds a predetermined level of @l, for example 2.5 kg/d, it is shifted to valve 12B or the second device. The aperture of delay device 188 is usually about 2
It is set so that the switching pressure is reached at a certain point. This time can be changed by changing the aperture of the delay device 188. During this time, the pressure in the dump valve 194 is released to the atmosphere through the orifice 206.

The cycle described above can be called a time-limited intake cycle.

During a timed exhalation cycle, the spool of valve 128 is
in position. As soon as the valve is cleared, the oxygen generator 1
Oxygen from 32 is sent to gt166 to 7 cumulator. Relief valve 174 is preferably 0.14 mu y/d
is set such that the accumulator supplies gas to the venturi in an unrestricted (no pressure drop) circuit to prevent excessive pressure from building up in the system. At this time Bo)
Since P33 is opened, it is an accumulator or I-,
The released gas is stopped by the spool. At this time, t164 extending from boat P12 to boat P2 communicates with the atmosphere through the boat pH, thereby t164
and in the tube 186 between the M stretcher 19Q and the connection point J4.

The discharge side of the pump The pressure established by valve 208 is maintained. When the pressure on the discharge side of the pump drops suddenly below the pressure established during the inhalation cycle, the exhalation valve 214 releases gas to the atmosphere.

At one time, the pressure of the pilot '47200 is maintained at the sensor 202, so that the dump valve 194 is maintained at the position m shown.

From this point on, the pressure in the pilot pipe 186 and the volume chamber 192 is gradually released via the delay device 190.

By changing the orifice size of the spreader 190, the % exhalation cycle can be set to about 4 seconds or other desired time.

When the pressure in the volume chamber 192 drops to about 1 mmq/d, the spring 1B2 acting on the spool of the valve 128 returns the spool to the position k shown.

During the inhalation cycle, if the patient tries to prioritize the inhalation cycle by exhaling, the pressure compensated inhalation-exhalation valve 21
4 is closed, the gas sent through the discharge i152* of the pump 122 is not released.

Therefore, pressure builds up in pilot tube 200 and sensor 202 shifts valve 196 to extend the outlet of oxygen generator 132 from connection point J5 to J6! It communicates with the volume chamber 192 via 19B.

This causes the pressure in the volume &192 and the pilot tube 16 to rise rapidly, creating enough pressure to shift the spool 129 of the valve 128 to the second position.

When spool 129 is switched to the second position.

) The gas in pipe 164 between PI3 and P2 is removed by valve 128.
is released to the atmosphere via the pH of 1000 ml of water, reducing the pressure in tube 164 to 1 point above ambient pressure.

However, if the pressure of the pump upstream of the check valve 154 is
The valve 20B releases the pressure in the discharge chamber 152 on the downstream side of the check valve to the atmosphere, reduces the pressure in the pilot pipe 200, and the sensor 202 returns the switching valve 196 to the normal position (S!). At this time, each tank chamber begins to release gas as in a normal exhalation cycle.

During the exhalation cycle, if the patient attempts to override this cycle by inhaling the shield, the pump 122 discharges 5
152 drops below atmospheric pressure. As a result, the sensor 20
2 moves valve 196 to the left to provide pressurized oxygen to bilobed pipe 204 via pipe 198 to the dump valve. This moves the dump valve to the other position, reduces the pressure in VIB6 between the dump valve and the 2-position valve 128 to atmospheric pressure, switches the spool 129 of the valve 128 to the other position, and switches the spool 129 of the valve 128 to the other position. cycle it.

When this cycle is opened, pressure builds up on the discharge side 152 of the pump 122 and the valve 96 is in the central position.
V-car. The pressure in tube 204 is vented to atmosphere through restrictor 206 and valve 194 is returned to its normal position as shown.

In the illustrated example, all of the various regulators are housed in the housing; for example, the pressure controller 218, the dump valve 19,
4 manual operating device 222, etc. may be provided outside the housing 10B.

Ufl) 4 of the present invention will be summarized below, but it goes without saying that the present invention is not limited to these.

(1) operates periodically during operation of the power supply in normal mode to periodically deliver filtered air and oxygen into the patient's respiratory cavity in fire mode;

A complete, single, small-sized, yg-band ventilator/resuscitation device designed to accommodate full ventilation of the patient's breathing cavity in the Z-mode.

2+) A chemical rvt that releases oxygen at a pressure high enough to deliver intoxication to a person's lungs over a period of time during operation.
b) a filter having an inlet and an outlet for ambient air to remove toxic or harmful pollutants from the ambient air; a suction portion and a discharge portion that are driven and communicate with an outlet of the filter, and when driven by the power source, ambient air is sucked through the filter into the suction portion and mixed with the oxygen to form an air-fuel mixture. pump means for discharging from said outlet; d) an accumulator for receiving oxygen from said chemical oxygen generator during an exhalation mode and for replenishing the oxygen supplied by said chemical oxygen generator during an inhalation mode.

e) an outlet tube having one end connectable to the outlet of the pump and the other end connectable to the patient; and f) operatively connected to the pump and the accumulator and in a first mode configured to g) a two-position M flow directing means operative to deliver oxygen to the patient and in a second mode to deliver oxygen to said accumulator; In operation said flow directing means is operated in said first mode for a first limited period of time during an inspiratory mode and in said second mode during an expiratory mode.
and means for making one piece in the second mode for a limited period of time.

(2) The device of paragraph (1), wherein the filter, power source, pump means, and control means are all housed within the housing.

(The device according to item (1), including a !31 mask and a head harp, and the other end of the outlet pipe is connected to a !11We mask.

(4) The pump means includes a jet orifice through which pressurized oxygen is passed and discharged, and a venturi disposed downstream of the jet orifice, the suction portion being disposed upstream of the venturi, and the discharge portion being disposed in the jet orifice. placed downstream of the venturi (device of item 11).

(5) The device of paragraph (1), wherein the chemical oxygen generator is a chlorate candle.

(6) The control means includes pressure detection control means, and when the patient starts an inspiratory effort, the pressure detection control means
Item (1) above is configured to shift the position flow directing means to the @fertilization 1 mode and to switch the flow directing means to the vJ2 mode when the pressure on the patient exceeds a set pressure. Device.

[71171 The device according to item (1), wherein the flow directing means is arranged downstream of the pump.

(8) The device of item (1), wherein the flow directing means is located upstream of the pump.

(9) The apparatus of paragraph (1), wherein the control means includes two displaceable valves, one valve being shifted during exhalation of the patient and the other valve being shifted during inspiration.

10. The apparatus of claim 9, wherein said control means further comprises a fluidic flip-flop element having an input connected to a source of oxygen.

(III. Automatically operates during the operation of the power supply in the flat tit mode and in the intake mode delivers filtered air and oxygen to the breathing cavity of the person...
In exhalation mode, the patient's exhalation movement is controlled by the patient's exhalation motion.
It is Hayabusa Somaro, and a) a power source consisting of a chemical oxygen generator that releases oxygen at a pressure that is equivalent to pumping oxygen into the lungs of thought over a period of time. , b) a filter having an inlet and an outlet for ambient air and removing poisonous or harmful contaminants from the ambient air; and r) a suction part and a discharge part communicating with the outlet of the filter; oj+! ['!
When driven by oxygen supply fHf
l A pump means for sucking air into the suction part through the filter, mixing it with internal oxygen, and then pumping it out from the -II 91 outlet, and d) during exhalation! 111
an accumulator which receives oxygen from the chemical oxygen generator and which, during inspiration, conveys the accumulated oxygen to the pumping means; e) a conduit running outward between the oxygen generator, the pumping means and the accumulator; and f) operatively connected to said passage 11f, in a first position to prevent the flow of intoxicant from said oxygen generator to said accumulator, and in a second position to prevent the flow of intoxicant from said oxygen generator to said accumulator; 2 blocking the flow of oxygen to said pumping means;
position valve means; g) said i! During the operation of the power supply, the valve means is operated by the oxygen released by the oxygen generator 8g during the intake mode for a first limited period of time. 1 operative to be placed in a first position and placed in said second position for a second limited period of time during an exhalation mode;
and b) an outlet line connected at one end to the outlet m of said pump means and at the other end connected to the patient.

021@The pump means includes a check valve in the discharge portion, the check valve adapted to prevent backflow through the pump means, and further includes a pressure end aerobic pressure (PFEP) valve, the check valve being adapted to prevent backflow through the pump means; A portion of the PFEP valve is connected to the discharge side of the pump means and downstream of the reversing valve;
Another part of the FEP valve is connected to the pump means upstream of the 611 check valve (qi river device).

(131 power supply, filter, pump means, accumulator, conduit, 2nd place ml valve means and primary a
+lI city l (prlmary control)
Item 11 (14) further comprising pressure-compensated intake air coupling valve means, which valve means is disposed outside the housing in relation to the mask in Item 11. The device of item 03.

(15) Front - The self-conduit means includes an 11th 2% third supply pipe, and 5 bones are connected to the first! a second supply line extending from the power supply source to the pump means, a second supply line extending from the power supply source to the accumulator, and a third supply line extending from the accumulator to the pump means; , previous fil! A two-position valve means is connected to the first, second and third supply pipes, and is capable of shutting off the second supply pipe when in the first position; is t2 such that the first and third supply pipes can be shut off (device according to paragraph 111).

(16) a pilot pipe extending from the first supply pipe to the valve means downstream of the valve means;
The two-position valve means is normally spring biased and responds to a second position when the pressure in the first pilot tube exceeds a first predetermined pressure. The device of item (15) has a displacement OT function.

07+ A first delay means is provided in the pilot pipe, and this delay means is configured so that the pressure in the first supply pipe reaches the till first delay means.
operating to prevent movement of the two-position valve means from the first position to the second position until a predetermined time period has elapsed when the predetermined pressure is not reached. (1
6) Equipment.

0 & said two-position valve moves from position n++ to said first position only after the pressure in said pilot pipe has decreased below a second predetermined value that is lower than said first predetermined value. Displaceable by spring bias (device of item 161).

09 Pre-C first and second delay means are provided in the pilot tube *[! ! and these means are adapted to delay switching of said two-position valve from one position to the other for a predetermined period of time after a predetermined pressure has been achieved in said first supply pipe. Section equipment.

(2) the two-position valve means is displaceable between a first and a second position in response to a change in pressure within the eleven supply pipes, the bottom of which is located below the two-position valve means; 1 and 2nd i! ! ! All of the extending means are adapted to prevent displacement of the two-position valve (e) until a predetermined variable time has elapsed.

I21) a cut-off control means extending between said power supply 0, the discharge side of said pump means and said pilot tube, said control means said Pf! of the patient; 212. The apparatus of claim 211, wherein the valve means is operated in response to an increase in pressure within the discharge portion of the pump means due to air pressure to switch the valve means from the supply 1 position to the second position.

(2) A dump valve is provided in the pilot pipe for discharging the fluid in this pipe to the atmosphere, and the w-person action priority control means extends to the dump valve, and the ψ-person's INM effort prevents the 1. In response to the negative ■− in the discharge section of the dump means, the dump valve is shifted to its υ[temperature pupil.
! 2nd position d valve means front thread v; device of item (21) which is adapted to shift to the 1st position.

[Brief explanation of drawings]

Figure 1 is a fluid circuit diagram showing the first embodiment of the invention, and Figure 2 is a fluid circuit diagram showing the first embodiment of the invention.
Figure 3 shows another form of the present invention. The figure shown is a circuit diagram of one unit. 〕0, ]]0...Mask, 〕2,〕〕2...Hetsui Harness, 〕4,〕I1・
...Respiratory cavity, ]8.132...Ammonium acid source, ○...Resistance sending means, 22...Distribution valve, 24...Fluid operation control means, 32.120...Filter. 54.124...accumulator, 122...pump, 128...2 position valve, 192...volume chamber, 194...dump valve 1, 196...cutting valve.

Claims (1)

[Scope of Claims] A chemical oxygen generator having: a) a chemical oxygen generator producing oxygen at a pressure sufficient to oxygenate the human lungs; and b) an inlet and an outlet open to the surrounding air. and c) a suction part and a discharge part which receive oxygen from the oxygen generator and are driven by the oxygen and communicate with the outlet of the filter. d) pump means for sucking ambient air through the filter into the suction section, mixing it with the oxygen and discharging a mixed gas from the outlet section when driven by oxygen from the oxygen generator; d) an exhalation mode; an accumulator for receiving oxygen from said chemical oxygen generator and replenishing the oxygen supplied by said chemical oxygen generator during exhalation mode; e) one end connectable to the outlet of said pump; and a second end connectable to the patient; g) a two-position flow direction control means operable to switch the flow direction control means to the accumulator; and control means for controlling the device to be in the first mode for a limited period of time, and to be in the second mode for a second limited period of time during an exhalation mode.