CN109107008B - A simple respirator - Google Patents

Abstract

The invention relates to a simple respirator, which comprises an outer balloon, an inner balloon, an air inlet device and an exhaust device, wherein one end of the outer balloon is connected with the air inlet device, and the other end of the outer balloon is connected with the exhaust device; the inner balloon is arranged inside the outer balloon; one end of the inner balloon is connected with the air inlet device, and the other end of the inner balloon is connected with the air exhaust device through an air exhaust safety valve; the inner balloon is made of an elastic expandable material; when the air pressure in the inner balloon reaches the set pressure of the exhaust safety valve, the exhaust safety valve is jumped and opened, the air in the inner balloon body enters the exhaust device through the exhaust safety valve, the air pressure in the inner balloon gradually drops, when the air pressure in the inner balloon drops to the back seat pressure of the exhaust safety valve, the back seat of the exhaust safety valve is closed, the air pressure in the inner balloon gradually rises to form automatic circulation exhaust.

Description

A simple respirator

Technical field

The present invention relates to the technical field of medical equipment, and in particular to a simple respirator.

Background technique

Simple respirators are suitable for cardiopulmonary resuscitation and emergency situations where artificial respiration is required. They are especially suitable for situations where suffocation, difficulty breathing or where increased oxygen supply is required. With existing simple respirators, medical staff need to press continuously when using them. The manual operation of the balloon is unstable and it is difficult to judge how much gas is discharged. Most of the medical staff involved in pressing the balloon during actual use are women. Women have less strength and are prone to fatigue; and during the existing compression process, it is difficult to enter the balloon. The oxygen content of the balloon's gas is low. Adding a tail oxygen storage bag can increase the oxygen concentration, but the oxygen content is still low and the oxygen content is not fixed.

Contents of the invention

The technical problem to be solved by the present invention is to provide a simple respirator to solve at least one of the above technical problems in view of the shortcomings of the existing technology.

The technical solution of the present invention to solve the above technical problems is as follows: a simple respirator, including an outer balloon, an inner balloon, an air inlet device and an exhaust device. One end of the outer balloon is connected to the air inlet device, and the other end is connected to the exhaust device. device connection; the inner balloon is installed inside the outer balloon; one end of the inner balloon is connected to the air inlet device, and the other end is connected to the exhaust device through an exhaust safety valve; the inner balloon is made of elastic expandable material;

Among them, when the air pressure in the inner balloon reaches the set pressure of the exhaust safety valve, the exhaust safety valve jumps open, and the gas in the inner balloon enters the exhaust device through the exhaust safety valve, and the air pressure in the inner balloon gradually decreases. When the air pressure in the inner balloon drops to the reseating pressure of the exhaust safety valve, the exhaust safety valve reseats and closes, and the air pressure in the inner balloon gradually rises, forming an automatic cycle of exhaust.

The beneficial effects of the present invention are: by arranging an inner balloon inside the outer balloon, one end of the inner balloon is connected to the air inlet device, the other end is connected to the exhaust device through the exhaust safety valve, and the air inlet device is connected to a stable high-pressure supply Oxygen source, the gas entering the inner balloon expands the inner balloon. When the air pressure in the inner balloon reaches the set pressure of the exhaust safety valve, the exhaust safety valve jumps open and the gas in the inner balloon enters through the exhaust safety valve. Exhaust device, the air pressure in the inner balloon gradually decreases. When the air pressure in the inner balloon drops to the reseating pressure of the exhaust safety valve, the exhaust safety valve reseats and closes, and the air pressure in the inner balloon gradually rises, forming an automatic Cyclic exhaust reduces labor intensity and improves efficiency, and the inner balloon contains pure oxygen, which increases the oxygen supply for patients during first aid. The energy source of the automatic circulating air supply is high-pressure oxygen, no power supply is required, and the structure is simple and convenient; the inner balloon It is an elastic and expandable material. When the inner balloon is not inflated, the balloon retracts and occupies a small space. When the inner balloon is inflated, it will be automatically exhausted as the expansion pressure of the elastic balloon rises and exceeds the set pressure of the exhaust device. The inner balloon of the present invention and The outer balloon shares the exhaust device. Regardless of whether the inner balloon is activated or not, manual air supply can be achieved by manually pressing the outer balloon.

On the basis of the above technical solution, the present invention can also make the following improvements.

Further, an outer balloon exhaust check valve is provided at a connection between one end of the outer balloon and the exhaust device, and the gas in the outer balloon enters the exhaust device through the outer balloon exhaust one-way valve.

The beneficial effect of adopting the above further solution is that by setting an outer balloon exhaust check valve at the connection between one end of the outer balloon and the exhaust device, the gas in the outer balloon enters the exhaust through the outer balloon exhaust one-way valve. device, while preventing the gas in the exhaust device from entering the outer balloon in reverse.

Further, the air inlet device is provided with a first air inlet mechanism and a second air inlet mechanism. The first air inlet mechanism is connected to one end of the outer balloon; the second air inlet mechanism is connected to one end of the inner balloon.

The beneficial effect of adopting the above further solution is that by connecting the first air inlet mechanism to one end of the outer balloon, and the second air inlet mechanism to one end of the inner balloon, the air inlet process of the outer balloon and the air inlet of the inner balloon are combined. The gas process is divided into two independent and connected processes to achieve the purpose of the dual system of the present invention. The present invention can realize automatic cyclic exhaust through the inner balloon and the exhaust safety valve, and can also realize manual exhaust by squeezing the outer balloon. In the actual situation of medical emergency, when there is no oxygen supply source, first aid measures are provided through artificial extrusion and exhaust, and the patient is transferred to a facility with an oxygen supply source (such as an emergency vehicle or ward), and will stabilize The oxygen supply equipment (oxygen tank or high-pressure oxygen supply on the wall of the ward) is directly connected to the second air inlet mechanism and automatically circulates exhaust. When the pressure of the oxygen supply equipment is insufficient or the automatic cycle frequency is insufficient, the outer balloon can be pressed to realize the inner and outer balloons. Air supply at the same time.

Further, a first air inlet check valve is provided at the connection between the first air inlet mechanism and one end of the outer balloon, and the gas entering the first air inlet mechanism passes through the first air inlet one-way valve and then enters the outer balloon; the second A second air intake check valve is provided at the connection between the air intake mechanism and one end of the inner balloon. The gas entering the second air intake mechanism passes through the second air intake check valve and then enters the inner balloon.

The beneficial effect of adopting the above further solution is that the first air intake check valve and the second air intake check valve are provided to allow the gas to move in one direction and prevent the reverse flow of the gas.

Further, the first air inlet mechanism and/or the second air inlet mechanism are respectively connected to the oxygen supply equipment through oxygen connecting pipes.

The beneficial effect of adopting the above further solution is that by providing an oxygen connecting pipe on the second air inlet mechanism, in an environment with oxygen supply equipment, the oxygen connecting pipe can be directly connected to the oxygen supply equipment, allowing the present invention to automatically circulate air supply. , simple to operate; when manual extrusion is used for air supply, the second air inlet mechanism can also be connected to the oxygen supply equipment through the oxygen connecting pipe. The present invention can realize the independent air supply of the inner balloon and the outer balloon, and can also realize the inner balloon. The bladder and outer balloon are supplied with air at the same time.

Further, the first air inlet mechanism includes an air inlet and an air storage valve, and an oxygen storage bag is detachably installed on the air storage valve.

The beneficial effect of adopting the above further solution is: in an oxygen-free environment, remove the oxygen storage bag, supply air to the patient by squeezing the outer balloon, and the air enters the outside through the air inlet and then through the first air inlet one-way valve. In the balloon, the gas storage valve and the oxygen storage bag are existing technologies and will not be described in detail here.

Further, the exhaust device is equipped with a pressure safety valve, one end of the pressure safety valve is located inside the exhaust device, and the other end is located outside the exhaust device.

The beneficial effect of adopting the above further solution is that the exhaust device is equipped with a pressure safety valve. When the pressure in the exhaust device reaches a certain value, the pressure safety valve pops up to release the pressure in the exhaust device, ensuring the safety of the patient and avoiding gas. If the air supply pressure is damaged, the air supply pressure will be automatically adjusted within a safe range, and gas greater than the specified pressure value will be automatically discharged.

Furthermore, an end of the exhaust device away from the outer balloon is connected to a mask, and an exhalation valve is provided between the exhaust device and the mask.

The beneficial effects of adopting the above further solution are: the gas enters the mask that is close to the patient's mouth and nose to achieve the purpose of ventilation; the exhalation valve is used for deflation, and the exhalation valve is a component of the existing respirator and is an existing technology. , I won’t go into details here.

Furthermore, the outer balloon is provided with an exhaust valve for discharging gas in the outer balloon.

The beneficial effects of adopting the above further solution are: the outer balloon is equipped with an exhaust valve. When the inner balloon is automatically inflated, the air between the inner and outer balloons is squeezed through the exhaust valve and slowly discharged to the outside of the outer balloon. The outer balloon is manually squeezed. When the balloon is inflated, the air between the inner and outer balloons flows rapidly to close the exhaust valve, and the air flows into the exhaust device through the outer balloon exhaust check valve between the outer balloon and the exhaust device.

Furthermore, the exhaust safety valve has a fixed set pressure and a return pressure of .

The beneficial effects of adopting the above further solution are: setting the set pressure of the safety valve to a fixed value to provide patients with stable emergency oxygen supply; the set pressure is the artificially set starting pressure of the safety valve. The return pressure is the pressure at which the safety valve resets after it takes off. The inner balloon discharges pure oxygen into the exhaust device through the pressure difference between the two. The pressure is fixed and the exhaust volume is fixed each time.

Description of drawings

Figure 1 is a schematic diagram of a simple respirator of the present invention.

In the drawings, the parts represented by each number are listed as follows:

1. Outer balloon, 2. Inner balloon, 3. Air inlet device, 31. First air inlet mechanism, 311. Air inlet, 312. Air storage valve, 32. Second air inlet mechanism, 4. Exhaust Air device, 5. Exhaust safety valve, 6. External balloon exhaust one-way valve, 7. Oxygen connecting tube, 8. Oxygen storage bag, 9. Pressure safety valve, 10. Mask, 11. Exhalation valve, 12 ,Vent.

Detailed ways

The principles and features of the present invention are described below with reference to the accompanying drawings. The examples cited are only used to explain the present invention and are not intended to limit the scope of the present invention.

Example 1:

As shown in Figure 1, a simple respirator includes an outer balloon 1, an inner balloon 2, an air inlet device 3 and an exhaust device 4. One end of the outer balloon 1 is connected to the air inlet device 3, and the other end is connected to the exhaust device. The air device 4 is connected; the inner balloon 2 is installed inside the outer balloon 1; one end of the inner balloon 2 is connected to the air inlet device 3, and the other end is connected to the exhaust device 4 through the exhaust safety valve 5; the inner balloon 2 is made of elastic expandable materials;

Among them, when the air pressure in the inner balloon 2 reaches the set pressure of the exhaust safety valve 5, the exhaust safety valve 5 jumps open, and the gas in the inner balloon 2 enters the exhaust device 4 through the exhaust safety valve 5, and the inner balloon The air pressure in the inner balloon 2 gradually decreases. When the air pressure in the inner balloon 2 drops to the reseating pressure of the exhaust safety valve 5, the exhaust safety valve 5 reseats and closes, and the air pressure in the inner balloon 2 gradually rises, forming an automatic cycle exhaust. gas.

The beneficial effects of this embodiment are: by setting the inner balloon 2 inside the outer balloon 1, one end of the inner balloon 2 is connected to the air inlet device 3, and the other end is connected to the exhaust device 4 through the exhaust safety valve 5, and the air intake A stable high-pressure oxygen supply source is connected to the device 3. The gas entering the inner balloon 2 will expand the inner balloon 2. When the air pressure in the inner balloon 2 reaches the set pressure of the exhaust safety valve 5, the exhaust safety valve 5 will jump open. , the gas in the inner balloon 2 enters the exhaust device 4 through the exhaust safety valve 5, and the air pressure in the inner balloon 2 gradually decreases. When the air pressure in the inner balloon 2 drops to the return pressure of the exhaust safety valve 5, The exhaust safety valve 5 returns to its seat and closes, and the air pressure in the inner balloon 2 gradually rises to form an automatic cyclic exhaust, which reduces labor intensity and improves efficiency. Moreover, the inner balloon 2 contains pure oxygen, which increases the oxygen supply for patients during first aid. , the energy source of automatic circulating air supply is high-pressure oxygen, no power supply is required, and the structure is simple and convenient; the inner balloon 2 is made of elastic and expandable material. When the inner balloon 2 is not inflated, the balloon retracts and occupies a small space. When inflated, the elastic balloon is automatically deflated as the expansion pressure rises and exceeds the set pressure of the exhaust device; the inner balloon 2 and the outer balloon 1 of the present invention share the exhaust device 4. Regardless of whether the inner balloon is activated or not, the outer balloon can be manually pressed The bag realizes manual air supply. .

Example 2:

As shown in Figure 1, a simple respirator includes an outer balloon 1, an inner balloon 2, an air inlet device 3 and an exhaust device 4. One end of the outer balloon 1 is connected to the air inlet device 3, and the other end is connected to the exhaust device. The inner balloon 2 is installed inside the outer balloon 1; one end of the inner balloon 2 is connected to the air inlet device 3, and the other end is connected to the exhaust device 4 through the exhaust safety valve 5; the air inlet device 3 is equipped with There are a first air inlet mechanism 31 and a second air inlet mechanism 32. The first air inlet mechanism 31 is connected to one end of the outer balloon 1; the second air inlet mechanism 32 is connected to one end of the inner balloon 2; forming a dual system: automatic Cycle exhaust and manual squeeze exhaust.

Among them, the inner balloon 2 is made of elastic expandable material; specifically, the inner balloon 2 is made of expandable medical rubber material. The first air inlet mechanism 31 includes an air inlet 311 and an air storage valve 312. The air storage valve 312 can be The disassembled oxygen storage bag 8 is installed; the second air inlet mechanism 32 is connected to the oxygen supply equipment through the oxygen connecting pipe 7. Nowadays, there are high-pressure oxygen supply systems on the walls of hospitals or oxygen tanks are equipped on ambulances to directly connect the oxygen. The tube 7 is connected to a high-pressure oxygen supply system or an oxygen tank. The high-pressure oxygen supply system or the oxygen tank provides continuous oxygen into the inner balloon 2 so that the inner balloon 2 expands.

Among them, the exhaust safety valve 5 is set with a fixed value of the set pressure. When the air pressure in the inner balloon 2 reaches the set pressure of the exhaust safety valve 5, the exhaust safety valve 5 jumps open, and the gas in the inner balloon 2 passes through The exhaust safety valve 5 enters the exhaust device 4, and the air pressure in the inner balloon 2 gradually decreases. When the air pressure in the inner balloon 2 drops to the reseating pressure of the exhaust safety valve 5, the exhaust safety valve 5 reseats and closes. The air pressure in the inner balloon 2 gradually rises, forming an automatic cyclic exhaust. During the process of opening and returning the exhaust safety valve 5, the gas in the inner balloon 2 is partially discharged into the exhaust system to provide oxygen to the patient. The second air inlet mechanism 32 is connected to stable oxygen supply equipment. The automatic circulating exhaust continuously and stably supplies oxygen to patients at even intervals. While obtaining stable oxygen supply, no operation by medical staff is required, which completely liberates medical staff and reduces labor. strength; and the inner balloon contains pure oxygen, which increases the oxygen supply for patients during emergency situations. The energy source of the automatic circulating air supply is high-pressure oxygen, which does not require power supply. The structure is simple and convenient; the inner balloon is made of elastic and expandable material. When not inflated, the balloon retracts and occupies a small space. When the inner balloon is inflated, it is automatically exhausted as the expansion pressure of the elastic balloon rises and exceeds the set pressure of the exhaust device. In the present invention, the inner balloon and the outer balloon share an exhaust device, regardless of the Whether the inner balloon is activated or not, manual air supply can be achieved by manually pressing the outer balloon. .

By connecting the first air inlet mechanism 31 to one end of the outer balloon 1 and the second air inlet mechanism 32 to one end of the inner balloon 2, the air inlet process of the outer balloon 1 and the air inlet process of the inner balloon 2 are separated. As two independent and related processes, the purpose of the dual system of the present invention is achieved. The present invention can realize automatic cyclic exhaust through the inner balloon 2 and the exhaust safety valve 5, and can also realize manual exhaust by squeezing the outer balloon 1. Exhaust, in the actual situation of medical emergency, when there is no oxygen supply source, first aid measures are provided by artificial squeezing exhaust, and the patient is transferred to a facility with an oxygen supply source (such as an emergency vehicle or ward). The stable oxygen supply equipment (oxygen tank or high-pressure oxygen supply on the wall of the ward) is directly connected to the second air inlet mechanism 32 and automatically circulates exhaust. When the pressure of the oxygen supply equipment is insufficient or the automatic cycle frequency is insufficient, the outer balloon can be pressed to achieve internal and external ventilation. The balloon is supplied with air at the same time.

When there is no stable oxygen supply equipment, the present invention can still provide oxygen to the patient by manually squeezing the exhaust. The first air inlet mechanism 31 includes an air inlet 311 and an air storage valve 312. The air storage valve 312 has The oxygen storage bag 8 is detachably installed, and manual squeezing and exhausting is an existing technology, and will not be described redundantly in the present invention.

In this embodiment, the air inlet pressure at the air inlet end of the inner balloon is required to be higher than the set pressure of the exhaust safety valve at the exhaust end of the inner balloon. The energy for the automatic circulation air supply of the inner balloon comes from the pressure difference between the two, which can be obtained by Adjust the air intake speed of the air inlet end of the inner balloon to adjust the frequency of automatic air circulation supply of the inner balloon.

The first air inlet mechanism and/or the second air inlet mechanism of this embodiment are respectively connected to the oxygen supply equipment through an oxygen connecting pipe. By providing an oxygen connecting pipe on the second air inlet mechanism, when there is an oxygen supply equipment Environment, directly connect the oxygen connecting pipe to the oxygen supply equipment, so that the invention can automatically circulate air supply, and the operation is simple; when manual extrusion air supply is used, the second air inlet mechanism can also be connected to the oxygen supply equipment through the oxygen connecting pipe, The invention can realize the independent air supply of the inner balloon and the outer balloon, and can also realize the simultaneous air supply of the inner balloon and the outer balloon.

Furthermore, an outer balloon exhaust check valve 6 is provided at the connection between one end of the outer balloon 1 and the exhaust device 4. The gas in the outer balloon 1 enters the exhaust device 4 through the outer balloon exhaust check valve 6. .

By setting the outer balloon exhaust check valve 6 at the connection between one end of the outer balloon 1 and the exhaust device 4, the gas in the outer balloon 1 enters the exhaust device 4 through the outer balloon exhaust check valve 6, and at the same time This prevents the gas in the exhaust device 4 from entering the outer balloon 1 in the reverse direction.

Furthermore, a first air inlet check valve is provided at the connection between the first air inlet mechanism 31 and one end of the outer balloon 1. The gas entering the first air inlet mechanism 31 passes through the first air inlet one-way valve and then enters the outer balloon. 1; A second air inlet check valve is provided at the connection between the second air inlet mechanism 32 and one end of the inner balloon 2. The gas entering the second air inlet mechanism 32 passes through the second air inlet one-way valve and then enters the inner balloon. 2. The first air inlet one-way valve and the second air inlet one-way valve are set up to allow the gas to move in one direction and prevent the backflow of the gas. Specifically, in this embodiment, the second air inlet mechanism 32 is an air inlet. The air inlet connects the inner balloon 2 and the oxygen connecting pipe 7. The first air inlet mechanism is connected to the inlet of the simple respirator in the prior art. The air end has a consistent structure, similar to a buffer cavity. The side connected to the outer balloon is provided with a first air inlet check valve, and the side away from the outer balloon is provided with an air inlet and is connected to an air storage port. valve.

Furthermore, the exhaust device 4 is equipped with a pressure safety valve 9 . One end of the pressure safety valve 9 is located inside the exhaust device 4 and the other end is located outside the exhaust device 4 .

A pressure safety valve 9 is installed outside the exhaust device 4. When the pressure in the exhaust device 4 reaches a certain value, specifically, the pressure value is 40cmH ₂ O, the pressure safety valve 9 pops up to release the pressure in the exhaust device 4. , to ensure patient safety.

Furthermore, the outer balloon 1 is provided with an exhaust valve 12 for discharging gas in the outer balloon 1 .

The outer balloon 1 is equipped with an exhaust valve 12. When the inner balloon 2 is automatically inflated, the air between the inner and outer balloons is squeezed through the exhaust valve 12 and slowly discharged to the outside of the outer balloon 1. When the outer balloon 1 is manually squeezed, The rapid flow of air between the inner and outer balloons closes the exhaust valve 12, and the air flows into the exhaust device 4 through the outer balloon exhaust check valve 6 between the outer balloon 1 and the exhaust device 4.

The exhaust valve 12 can be arranged on the body of the outer balloon (as shown in Figure 1), or can be arranged on the air intake device, that is, the first air intake mechanism, the second air intake mechanism, and the exhaust valve are arranged as parallel mechanisms. , as long as the respective functions can be realized, the position can be set according to actual arrangements. This embodiment does not specifically limit the specific position of the exhaust valve. As long as the function of the exhaust valve can be realized, the setting is within the protection scope of this embodiment.

Furthermore, one end of the exhaust device 4 away from the outer balloon 1 is connected to a mask 10. An exhalation valve 11 is provided between the exhaust device 4 and the mask 10 so that gas can enter the mask that is close to the patient's mouth and nose. 10 to achieve the purpose of ventilation; the exhalation valve 11 is used for deflation. The exhalation valve 11 is a component of the existing respirator and is an existing technology, so it will not be described in detail here.

Furthermore, the set pressure and backseat pressure of the exhaust safety valve are both fixed values. Preferably, the set pressure of the exhaust safety valve 5 is 60cmH ₂ O, and the backseat pressure is 50cmH ₂ O.

Set the set pressure of the safety valve to a fixed value to provide patients with stable emergency oxygen supply; the set pressure is the artificially set starting pressure of the safety valve. The return pressure is the pressure at which the safety valve resets after it takes off. The inner balloon discharges pure oxygen into the exhaust device through the pressure difference between the two. The pressure is fixed and the exhaust volume is fixed each time.

The dual system of the present invention can be used when one of the exhaust systems fails, and the other one can continue to be used. For example, when the automatic cycle exhaust fails, the air inlet 311 can be connected to the oxygen supply equipment, and the air storage valve The oxygen storage bag 8 is installed at position 312. At this time, the function and operation of the present invention are consistent with the existing simple respirator.

The usage process of this embodiment is: the usage of this invention is generally when the patient needs emergency oxygen supply. When the patient is in an environment with stable oxygen supply equipment such as a hospital or ambulance, the medical staff only need to directly The oxygen connecting pipe 7 of the present invention is connected to the oxygen supply equipment. The oxygen supply equipment provides oxygen and enters the inner balloon 2 to expand the inner balloon 2. The inner balloon 2 expands and squeezes the gas in the outer balloon 1 through the opening 12. Exhaust, when the air pressure in the inner balloon 2 reaches the set pressure of the exhaust safety valve 5, the exhaust safety valve 5 jumps open, and the gas in the inner balloon 2 enters the exhaust device 4 through the exhaust safety valve 5 to provide supply to the patient. Oxygen, the air pressure in the inner balloon 2 gradually decreases. When the air pressure in the inner balloon 2 drops to the reseating pressure of the exhaust safety valve 5, the exhaust safety valve 5 reseats and closes, and the air pressure in the inner balloon 2 gradually increases. , forming an automatic cycle exhaust;

When there is no stable oxygen supply equipment, first aid measures are provided through manual squeezing and exhausting. Manual squeezing and exhausting is an existing technology and will not be described again. At the same time, the patient is transferred to a facility with an oxygen supply source (such as an ambulance). or ward), directly connect the stable oxygen supply equipment (oxygen tank or high-pressure oxygen supply on the wall of the ward) to the second air inlet mechanism 32 to automatically circulate the exhaust.

Automatic cycle exhaust process: The oxygen supply equipment provides oxygen and enters the second air inlet mechanism 32 through the oxygen connecting pipe 7, and then enters the inner balloon 2 through the second air inlet mechanism 32. When the pressure reaches the set pressure of the exhaust safety valve 5 , part of the oxygen enters the exhaust device 4 through the exhaust safety valve 5, and then enters the mask 10 to supply oxygen to the patient.

Manual squeeze exhaust process: the gas enters the first air inlet mechanism 31 from the air inlet 311, and then part of the gas enters the outer balloon 1 through the first air inlet one-way valve, and the other part enters the oxygen storage bag 8 (with oxygen supply In the case of equipment, the outer balloon 1 is manually squeezed to exhaust). When the outer balloon 1 is manually squeezed, the gas entering the outer balloon 1 enters the exhaust device 4 through the outer balloon exhaust check valve 6, and then enters the exhaust device 4. Mask 10 supplies oxygen to the patient.

The beneficial effects of this embodiment are: the invention has dual systems, automatic cyclic exhaust and manual squeeze exhaust. The automatic cyclic exhaust reduces the labor intensity of medical staff, and can provide stable oxygen supply, eliminating the intensity of manual operation. The problem of unstable oxygen supply cannot be accurately controlled; manual extrusion exhaust can ensure that when there is no oxygen supply equipment such as transporting patients, the present invention can still achieve the purpose of providing emergency oxygen to patients, and can provide uninterrupted oxygen supply to patients. Provide oxygen to the patient.

In the description of this specification, reference to the description of the terms "Embodiment 1", "Embodiment 2", "example", "specific examples", or "some examples" means a specific method described in conjunction with the embodiment or example. , devices or features are included in at least one embodiment or example of the invention. In this specification, the schematic expressions of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the specific features, methods, apparatus or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, those skilled in the art may combine and combine different embodiments or examples and features of different embodiments or examples described in this specification unless they are inconsistent with each other.

The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection of the present invention. within the range.

Claims (6)

1. A simple respirator, characterized in that it includes an outer balloon, an inner balloon, an air inlet device and an exhaust device. One end of the outer balloon is connected to the air inlet device, and the other end is connected to the exhaust device. The inner balloon is connected to the air inlet device; the inner balloon is installed inside the outer balloon; one end of the inner balloon is connected to the air inlet device, and the other end is connected to the exhaust device through an exhaust safety valve; The inner balloon is made of elastic expandable material; Wherein, when the air pressure in the inner balloon reaches the set pressure of the exhaust safety valve, the exhaust safety valve jumps open, and the gas in the inner balloon enters the exhaust gas through the exhaust safety valve. device, the air pressure in the inner balloon gradually decreases. When the air pressure in the inner balloon drops to the reseating pressure of the exhaust safety valve, the exhaust safety valve reseats and closes, and the inner balloon The air pressure inside gradually rises, forming an automatic cycle of exhaust; An outer balloon exhaust check valve is provided at the connection between one end of the outer balloon and the exhaust device, and the gas in the outer balloon enters the exhaust through the outer balloon exhaust one-way valve. gas device; The air inlet device is provided with a first air inlet mechanism and a second air inlet mechanism. The first air inlet mechanism is connected to one end of the outer balloon; the second air inlet mechanism is connected to the inner balloon. One end of the connection; A first air inlet check valve is provided at the connection between the first air inlet mechanism and one end of the outer balloon, and the gas entering the first air inlet mechanism passes through the first air inlet one-way valve and then enters the Outer balloon; a second air inlet check valve is provided at the connection between the second air inlet mechanism and one end of the inner balloon, and the gas entering the second air inlet mechanism passes through the second air inlet check valve. to the valve and then into the inner balloon; The first air inlet mechanism and/or the second air inlet mechanism are respectively connected to the oxygen supply equipment through oxygen connecting pipes. 2. A simple respirator according to claim 1, characterized in that the first air inlet mechanism includes an air inlet and an air storage valve, and an oxygen storage bag is detachably installed on the air storage valve. 3. A simple respirator according to claim 1, characterized in that a pressure safety valve is installed on the exhaust device, one end of the pressure safety valve is located in the exhaust device, and the other end is located in the exhaust device. outside of the gas unit. 4. A simple respirator according to claim 1, characterized in that, an end of the exhaust device away from the outer balloon is connected to a mask, and an exhalation device is provided between the exhaust device and the mask. valve. 5. A simple respirator according to claim 1, wherein the outer balloon is provided with an exhaust valve for discharging gas in the outer balloon. 6. A simple respirator according to claim 1, characterized in that the exhaust safety valve has fixed setting pressure and return pressure.