Artificial airway airbag pressure regulating device and method for air transport

Abstract

The invention discloses an artificial airway airbag pressure regulating device and method for air transport, which belongs to the technical field of medical equipment, and comprises: an air supply and pressure regulating pipeline, a motor, a constant pressure air supply tank, an air suction pipeline and a pressure relief and pressurizing tank, and an airbag pressure detection component is arranged on the constant pressure air supply tank, and an adaptive pressure regulating mechanism is arranged in the pressure relief and pressurizing tank; through the arrangement of the airbag pressure detection component and the adaptive regulating mechanism, the pressure in the airbag can be accurately controlled during use, so as to avoid damage to the airway due to excessively high or low pressure, thereby improving the safety and comfort during the transportation of the wounded; at the same time, medical staff do not need to manually monitor and adjust the airbag pressure, which greatly reduces the operating pressure in a high-risk environment and improves the efficiency of emergency medical rescue; and solves the problem that the prior art cannot accurately control the airbag pressure, thereby increasing the risk of airway damage to the patient.

Description

Technical Field

[0001] The invention belongs to the technical field of medical devices, and in particular relates to an artificial airway airbag pressure regulating device and method for air transport. Background Art

[0002] In the medical field, the establishment of an artificial airway is an important means to maintain the patient's respiratory function, especially in scenarios such as intensive care, surgical anesthesia, and disaster relief. However, when patients are telemedically evacuated by aviation tools such as airplanes, the changes in air pressure in high-altitude environments pose new challenges to the maintenance of artificial airways. As the altitude increases, the outside air pressure decreases. If the pressure in the artificial airway bag is not adjusted accordingly, the bag may over-expand, causing damage to the airway mucosa and even airway occlusion. On the contrary, if the bag pressure is too low, it may cause poor airway sealing, causing liquid infiltration or gas leakage, affecting respiratory function. For example, on the ground, the cuff pressure of 25cm water changes rapidly with ascent. When ascending, caregivers usually sit for safety to prevent active manipulation of the cuff pressure. At a regular cruising altitude of 2500m, the cuff pressure may exceed 80cm water. If the cuff is adjusted by removing air from the high altitude, the opposite problem will occur during descent. The pressure of 25 cm of water changes rapidly with descent below 10 cm of water, allowing fluid above the cuff to easily enter the lower airway. As with the ascent, the paramedic cannot manipulate the cuff pressure during descent due to safety concerns associated with landing.

[0003] At present, manual pressure gauges or airbag inflators with preset pressures are usually used clinically to maintain the pressure in the artificial airway airbag. However, these methods cannot automatically adjust the airbag pressure in real time to adapt it to changes in external air pressure during flight, especially when there are large changes in altitude. In addition, the manual method of adjusting the airbag pressure not only increases the workload of medical staff, but also may not be able to accurately control the airbag pressure due to the subjectivity and inaccuracy of the operation, thereby increasing the risk of airway damage to patients.

[0004] Therefore, the prior art lacks a device and method that can automatically and accurately adjust the pressure of the artificial airway bag, especially during flight in a high-altitude environment, which can adjust the bag pressure in real time according to the external air pressure changes to maintain the airway seal while avoiding damage to the airway mucosa. In view of this technical gap, the present invention designs a new type of bag pressure adjustment device and method to solve the problems existing in the above-mentioned prior art and improve the safety and comfort of patients during aeromedical evacuation. Summary of the invention

[0005] 1. Technical issues to be resolved

[0006] In view of the deficiencies in the prior art, the present invention provides an artificial airway bag pressure regulating device and method for air transport, which has the advantages of being able to automatically adjust the bag pressure in real time according to changes in external air pressure during flight in a high-altitude environment, thereby ensuring the stability of the airway seal and avoiding damage to the airway mucosa. It solves the problem that the prior art cannot accurately control the bag pressure, thereby increasing the risk of airway damage to the patient.

[0007] (II) Technical solution

[0008] In order to achieve the above-mentioned purpose of facilitating the real-time and automatic adjustment of the airbag pressure according to the change of the external air pressure and ensuring the stability of the airway seal, the present invention provides the following technical solutions:

[0009] The present invention discloses a first solution: an artificial airway airbag pressure regulating device for air transport, comprising:

[0010] An air supply pressure regulating pipeline, one end of which is connected to the airway airbag, and the other end is connected to the constant pressure air supply tank;

[0011] The motor is arranged at one end of the pressure relief and pressurization tank, and an adaptive pressure regulating mechanism is arranged in the pressure relief and pressurization tank and connected to the motor;

[0012] The constant pressure air supply tank is arranged at the other end of the pressure relief and pressurization tank, connected with the pressure relief and pressurization tank through a connecting pipe, and an air bag pressure detection component is arranged at the air pressure supply end of the constant pressure air supply tank;

[0013] The air suction pipe has one end connected to the air supply pressure regulating pipe and the other end connected to the pressure relief and pressurizing tank;

[0014] The pressure relief and pressurizing tank is arranged between the constant pressure air supply tank and the connecting frame.

[0015] As a preferred embodiment, the airbag pressure detection component includes:

[0016] A first control valve is arranged on the air pressure supply pipeline of the constant pressure air supply tank;

[0017] The potentiometer is arranged on the air supply pressure regulating pipeline, and the air intake end of the air intake pipeline is arranged between the first control valve potentiometers.

[0018] As a preferred embodiment, the outer end of the pressure relief and pressurization tank is connected to the connecting frame through a connecting bolt, and the connecting frame is also provided with:

[0019] A bearing is arranged on the connecting frame and connected to the driving shaft of the motor driving end;

[0020] The connecting pins are symmetrically arranged on the connecting frame and are used in conjunction with the motor.

[0021] As a preferred embodiment, the pressure relief and pressurization tank is also provided with a movable frame, the movable frame is an L-shaped plate structure, and the movable frame is provided with:

[0022] The elastic film is arranged on a side plate of the movable frame and is closely fitted with the inner wall of the pressure relief and pressure tank, so that a closed film cavity is formed between the elastic film and the pressure relief and pressure tank;

[0023] The limiting hole is an elliptical groove arranged on the other side plate of the movable frame, and is used in conjunction with the eccentric wheel arranged at the end of the motor driving shaft.

[0024] As a preferred embodiment, a guide block is further provided on the movable frame. The guide block is provided on a side plate of the movable frame on the same side as the elastic film and is used in conjunction with a guide groove provided on the inner side wall of the pressure relief and pressurization tank.

[0025] As a preferred embodiment, the adaptive pressure regulating mechanism is arranged in the film cavity, including a pressure controlling part arranged at the air inlet end of the air inlet at the upper end of the pressure relief and pressurization tank, and a one-way control component arranged in the air inlet and the exhaust port at the lower end of the pressure relief and pressurization tank; and the one-way control component arranged in the air inlet is opposite to the air inlet direction of the one-way pressurization group arranged in the exhaust port, and the exhaust port is connected to the connecting pipe.

[0026] As a preferred embodiment, the pressure control component is arranged on the air inlet, and a first air inlet chamber, a second air inlet chamber and a third air inlet chamber that are interconnected are arranged in the pressure control component, the first air inlet chamber is connected to an air intake duct, the air inlet of the second air inlet chamber is connected to the external environment, the third air inlet chamber is horizontally arranged at the exhaust end of the first air inlet chamber and the second air inlet chamber, is connected to the air inlet, and a switching control component is arranged in the third air inlet chamber.

[0027] As a preferred embodiment, the switching control component includes:

[0028] A solenoid valve, fixedly arranged at one end of the third air inlet chamber;

[0029] A push rod is movably arranged in the third air inlet cavity and is used in conjunction with the solenoid valve;

[0030] A sealing block is arranged at the other end of the push rod and is movably arranged in the third air inlet cavity and is closely fitted with the side wall of the third air inlet cavity;

[0031] One end of the first spring is connected to the inner wall of the third air inlet cavity, and the other end is connected to the sealing block.

[0032] As a preferred embodiment, the one-way control component includes:

[0033] A sealing ball is movably arranged at the air inlet end of the exhaust port and the air inlet, and is used in conjunction with the air inlet passage of the exhaust port and the air inlet;

[0034] The second spring is movably arranged in the exhaust port and the air inlet and is connected with the sealing ball.

[0035] The present invention discloses a second technical solution: a method for using an artificial airway airbag pressure regulating device for air transport, the method for using the pressure regulating device comprising:

[0036] Step 1: Insert the airway cuff into the patient's airway and transport the patient;

[0037] Step 2: When the flight altitude increases, the potential signal of the potentiometer is greater than the potential signal U MAX When the first control valve is closed, the motor is controlled to drive the movable frame to move in the pressure relief and pressurization tank, so that the film cavity becomes larger, the second spring in the air inlet is compressed, the air inlet is opened, and the gas in the airway airbag enters the film cavity to relieve the pressure of the airway airbag. When the potential signal U of the potentiometer is between U MIN 检测 MAX When the time is between, the motor stops;

[0038] Step 3: When the flight altitude decreases, the potential signal of the potentiometer is less than the set potential signal U MIN When the first control valve is opened, the constant pressure air chamber is used to replenish gas into the airway bag. When the potential signal U of the potentiometer is between U MIN 检测 MAX When the time is between, close the first control valve;

[0039] When the high-pressure gas in the constant-pressure air cavity is insufficient, the solenoid valve is energized, the sealing block is adjusted to move to the first air inlet cavity, the first air inlet cavity is closed, and the second air inlet cavity is opened. The motor drives the movable frame to move in the pressure relief and pressurization tank, adjusts the film cavity to become larger, and opens the air inlet, so that the external gas enters the film cavity under the action of negative pressure and pressure difference, and quickly pressurizes the airway airbag.

[0040] (III) Beneficial effects

[0041] Compared with the prior art, the present invention provides an artificial airway bag pressure regulating device and method for air transport, which has the following beneficial effects:

[0042] ​​​​1. Through the setting of the built-in adaptive pressure regulating mechanism, the pressure in the airway airbag can be automatically and real-time adjusted according to the air pressure changes during the flight to ensure the breathing safety of the injured during air transportation; at the same time, medical staff do not need to manually monitor and adjust the airbag pressure, which greatly reduces the operating pressure in high-risk environments and improves the efficiency of emergency medical rescue;

[0043] 2. Through the setting of the airbag pressure detection component and the adaptive adjustment mechanism, the pressure in the airbag can be accurately controlled during use to avoid damage to the airway due to excessive or low pressure, thereby improving the safety and comfort of the wounded during transportation;

[0044] 3. This device can adapt to the changes in air pressure from the ground to high altitudes, provide continuous and stable breathing support for the wounded, and ensure that the airbag pressure is within a safe range at any altitude. It not only solves the problem of difficult to accurately control the airbag pressure during flight, but also greatly improves the work efficiency of medical staff and the safety of wounded transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 It is a schematic structural diagram of the artificial airway airbag pressure regulating device used for air transport and evacuation of the present invention;

[0046] Figure 2 This is an installation effect diagram of the pressure relief and pressurization tank of the present invention;

[0047] Figure 3 It is a side view of the pressure relief and pressurization tank of the present invention;

[0048] Figure 4 It is a structural schematic diagram of the movable frame of the present invention;

[0049] Figure 5 It is a cross-sectional view of the pressure relief and pressurization tank of the present invention;

[0050] Figure 6 A cross-sectional view of the pressure regulating device of the present invention Figure 1 ;

[0051] Figure 7 For the present invention Figure 5 A partial enlarged view of the middle A;

[0052] Figure 8 For the present invention Figure 5 A partial enlarged view of point B in the middle;

[0053] Fig. 9 A cross-sectional view of the pressure regulating device of the present invention Figure 2 ;

[0054] Fig.10 For the present invention Fig. 9 A partial enlarged view of point C in the middle;

[0055] Fig.11 This is a diagram showing the use status of the artificial airway airbag pressure regulating device for air transport evacuation of the present invention;

[0056] Fig.12 The control principle diagram of the artificial airway airbag pressure regulating device used for air transport and evacuation of the present invention.

[0057] In the figure: 1. airway airbag; 2. air supply and pressure regulating pipeline; 3. motor; 31. bearing; 32. eccentric wheel; 4. constant pressure air supply tank; 41. constant pressure air cavity; 42. air inlet of air supply tank; 43. air pressure supply pipeline; 44. first control valve; 5. connecting pipe; 6. potentiometer; 7. suction pipeline; 8. display screen; 9. pressure relief and pressurization tank; 91. air inlet; 92. movable frame; 921. elastic film; 922. guide block; 923. limit hole; 93. guide groove; 94. film cavity; 95. pressure control member; 951. first air inlet cavity; 952. second air inlet cavity; 953. third air inlet cavity; 954. solenoid valve; 955. first spring; 956. sealing block; 96. exhaust port; 957. push rod; 958. sealing ball; 959. second spring; 10. connecting frame; 101. connecting pin. DETAILED DESCRIPTION

[0058] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0059] Embodiment 1:

[0060] See also Figures 1 to 12 , an artificial airway bag pressure regulating device for air transport, comprising an air supply pressure regulating pipeline 2, a motor 3, a constant pressure air supply tank 4, an air suction pipeline 7 and a pressure relief and pressurizing tank 9; wherein

[0061] The air-infusing and pressure-regulating pipeline 2 is a hose, and one end of the air-infusing and pressure-regulating pipeline 2 is connected to the airway airbag 1, and the other end is connected to the constant-pressure air-infusing tank 4;

[0062] The motor 3 is arranged at one end of the pressure relief and pressurization tank 9, and an adaptive pressure regulating mechanism is arranged in the pressure relief and pressurization tank 9 and connected to the power output end of the motor 3, and the adaptive pressure regulating mechanism is driven by the motor 3. When in use, the motor 3 is powered by a battery or a mobile power supply;

[0063] The constant pressure air supply tank 4 is arranged at the other end of the pressure relief and pressurization tank 9, and is connected to the pressure relief and pressurization tank 9 through a connecting pipe 5, and an air bag pressure detection component is arranged at the air pressure supply end of the constant pressure air supply tank 4;

[0064] One end of the air intake pipe 7 is connected to the air supply pressure regulating pipe 2, and the other end is connected to the pressure relief and pressurizing tank 9;

[0065] The pressure relief and pressurizing tank 9 is arranged between the constant pressure air supply tank 4 and the connecting frame 10;

[0066] When the pressure regulating device is used, during the flight in a high-altitude environment, as the flight altitude increases, due to the decrease in external pressure, in order to avoid damage to the airway airbag 1 during the expansion process, when the airbag pressure detection component detects that the gas pressure in the airway airbag 1 increases to the set maximum threshold, a control command is issued to the motor 3, and the motor 3 drives the adaptive pressure regulating mechanism to operate, and the airway airbag 1 is depressurized in real time through the suction pipe 7 to reduce its pressure, avoid continuous expansion of the airway airbag 1, and ensure the health of the patient's airway; when the aircraft is landing, due to the increase in external pressure, in order to avoid the airway airbag 1 from contracting at high speed and maintain the patient's respiratory function, when the airbag pressure detection component detects that the gas pressure in the airway airbag 1 decreases to the set minimum threshold, a control command is issued to the motor 3, and the motor 3 drives the adaptive pressure regulating mechanism to operate, and the airway airbag 1 is pressurized through the constant pressure air tank 4, so that the pressure is maintained within a constant range, without damaging the patient's airway, and on the basis of maintaining the patient's respiratory function.

[0067] Embodiment 2:

[0068] Different from Example 1, Figure 1 , Fig. 9 and Fig.10 As shown, the airbag pressure detection assembly includes a first control valve 44 and a potentiometer 6; wherein

[0069] The first control valve 44 is arranged on the air pressure supply pipeline 43 of the constant pressure air supply tank 4, and the first control valve 44 is a solenoid valve;

[0070] The potentiometer 6 is arranged on the air supply pressure regulating pipeline 2, and is used to detect the pressure in the airway airbag 1 in real time. The air inhalation end of the air inhalation pipeline 7 is arranged between the first control valve 44 and the potentiometer 6;

[0071] In this embodiment, the opening and closing and the opening degree of the air pressure supply pipeline 43 are controlled by the first control valve 44 to adjust the inflation speed and inflation volume of the airway airbag 1 by the constant pressure air supply tank 4. The larger the valve, the faster the airbag will inflate.

[0072] Among them, through the setting of the potentiometer 6, the gas pressure in the air supply and pressure regulating pipeline 2 can be fed back in real time through the potential signal of the potentiometer 6. When the potential signal of the potentiometer 6 rises, it means that the pressure in the airway airbag 1 increases, and the airway airbag 1 needs to be pressure-regulated to make it constant. At this time, the first control valve 44 is closed, and the motor 3 controls the adaptive pressure regulating mechanism to adjust the suction pipeline 7 to release the pressure of the airway airbag 1; when the potential signal of the potentiometer 6 decreases, it means that the pressure in the airway airbag 1 decreases, and the airway airbag 1 needs to be pressure-regulated to make it constant. At this time, the first control valve 44 is opened, so that the constant pressure air supply tank 4 replenishes the air pressure of the airway airbag 1, and when the high-pressure gas in the constant pressure air supply tank 4 is insufficient, the motor 3 controls the adaptive pressure regulating mechanism to operate, and the constant pressure air supply tank 4 is replenished with high-pressure gas so that its pressure meets the usage requirements.

[0073] Among them, the sliding contact on the resistance film of the potentiometer 6 is connected to the push rod through a spring. When in use, the displacement of the spring and the push rod under the action of gas is utilized to change the position of the contact point, thereby changing the ratio of the upper and lower resistances of the resistance film, thereby realizing the detection of the air pressure in the gas supply and pressure regulating pipeline 2 and converting it into an electrical signal.

[0074] Embodiment 3:

[0075] Different from the above embodiment, Figure 3 , Figure 4 , Figure 6 and Fig. 9 As shown, the outer end of the pressure relief and pressurization tank 9 is provided with a connecting frame 10 through a connecting bolt, and the connecting frame 10 is also provided with a bearing 31 and a connecting pin 101;

[0076] The bearing 31 is fixedly mounted on the connecting frame 10 and connected to the driving shaft of the driving end of the motor 3;

[0077] The connecting pin 101 is symmetrically arranged on the connecting frame 10 and is used in conjunction with the motor 3 to fix the motor 3 on the outer end of the connecting pin 101;

[0078] In this embodiment, the motor 3 adjusts the motor speed through the PWM module and is controlled by the feedback signal of the potentiometer 6 to drive the adaptive pressure adjustment mechanism to achieve the effect of replenishing and releasing the air pressure of the airway airbag 1.

[0079] Embodiment 4:

[0080] Different from the above embodiment, Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Fig. 9As shown, a movable frame 92 is movably arranged in the pressure relief and pressurization tank 9. The movable frame 92 is an L-shaped plate structure, and an elastic film 921, a guide block 922 and a limit hole 923 are arranged on the movable frame 92;

[0081] The elastic film 921 is disposed on a side plate of the movable frame 92 and is closely attached to the inner wall of the pressure relief and pressurization tank 9, so that a closed film cavity 94 is formed between the elastic film 921 and the pressure relief and pressurization tank 9;

[0082] The guide block 922 is disposed on the side plate of the movable frame 92 on the same side as the elastic film 921, and is used in conjunction with the guide groove 93 disposed on the inner side wall of the pressure relief and pressurization tank 9;

[0083] The limiting hole 923 is an elliptical groove provided on the other side plate of the movable frame 92, and is used in conjunction with the eccentric wheel 32 provided at the end of the driving shaft of the motor 3;

[0084] In this embodiment, the eccentric wheel 32 is driven to rotate by the motor 3, and the movable frame 92 is driven to move in the pressure relief and pressurization tank 9 through the interaction between the eccentric wheel 32 and the limiting hole 923. During the movement of the movable frame 92, the elastic film 921 is driven to move in the pressure relief and pressurization tank 9 to adjust the chamber size of the film cavity 94, and then the adaptive pressure adjustment mechanism is adjusted to achieve pressurization and pressure relief of the airway airbag 1.

[0085] The guide block 922 is provided to guide the moving direction of the movable frame 92 when the movable frame 92 moves, so as to avoid the movement path of the movable frame 92 being affected by the eccentric wheel 32 .

[0086] Embodiment 5:

[0087] Different from the above embodiment, Figure 5 , Figure 6 , Figure 7 , Figure 8 As shown, the adaptive pressure regulating mechanism is arranged in the film cavity 94, including a pressure control member 95 arranged at the air inlet end of the air inlet 91 at the upper end of the pressure relief and pressure tank 9, and a one-way control component arranged in the air inlet 91 and the exhaust port 96 at the lower end of the pressure relief and pressure tank 9;

[0088] The pressure control member 95 is fixedly mounted on the air inlet 91, and a first air inlet cavity 951, a second air inlet cavity 952 and a third air inlet cavity 953 are arranged in the pressure control member 95, the first air inlet cavity 951 is in communication with the air inlet pipe 7, and is used to introduce the gas in the airway airbag 1 into the film cavity 94 through the air inlet pipe 7, the air inlet of the second air inlet cavity 952 is in communication with the external environment, and is used to draw external air into the film cavity 94 when in use, and quickly pressurize the constant pressure air cavity 41 of the constant pressure air replenishing tank 4, the third air inlet cavity 953 is horizontally arranged at the exhaust ends of the first air inlet cavity 951 and the second air inlet cavity 952, and is in communication with the air inlet 91;

[0089] The one-way control assembly disposed in the air inlet 91 has an air inlet direction opposite to that of the one-way pressurizing assembly disposed in the air outlet 96, and the air outlet 96 is connected to the connecting pipe 5;

[0090] Driven by the motor 3 , the movable frame 92 moves in the pressure relief and pressurization tank 9 to adjust the chamber volume of the film cavity 94 to relieve pressure on the airway airbag 1 or quickly pressurize the constant pressure air cavity 41 .

[0091] like Figure 5 , Figure 6 , Figure 7 , Figure 8 As shown, the one-way control assembly includes a sealing ball 958 and a second spring 959;

[0092] The sealing ball 958 is movably arranged at the air inlet end of the exhaust port 96 and the air inlet 91, and is used in conjunction with the air inlet passage of the exhaust port 96 and the air inlet 91 to seal the recent passage;

[0093] The second spring 959 is movably disposed in the exhaust port 96 and the air inlet 91 and is fixedly connected to the sealing ball 958;

[0094] When the airway airbag 1 is depressurized, the movable frame 92 moves in the pressure relief and pressurization tank 9 driven by the motor 3 to adjust the chamber of the film cavity 94 to become smaller, so that the gas in the airway airbag 1 is compressed by the second spring 959 in the air inlet 91 under the action of negative pressure and pressure difference. At this time, the air inlet 91 opens, and then the gas in the airway airbag 1 enters the film cavity 94 under the action of negative pressure and pressure difference, thereby completing the depressurization of the airway airbag 1.

[0095] When the constant-pressure air cavity 41 is rapidly pressurized, the first air inlet cavity 951 is closed and the second air inlet cavity 952 is opened. Driven by the motor 3, the movable frame 92 moves in the pressure relief and pressurization tank 9 to adjust the size of the film cavity 94 so that the gas in the film cavity 94 squeezes the sealing ball 958 in the exhaust port 96, so that the second spring 959 is compressed. At this time, the exhaust port 96 is opened, and then the gas in the airway airbag 1 enters the constant-pressure air cavity 41 under the action of negative pressure and pressure difference, thereby realizing a pressurization and air replenishment link and completing the rapid pressurization of the constant-pressure air cavity 41.

[0096] like Figure 5 , Figure 6 , Figure 7 , Figure 8 As shown, a switching control component is also disposed in the third air inlet cavity 953, and the switching control component includes a solenoid valve 954, a push rod 957, a sealing block 956 and a first spring 955;

[0097] The solenoid valve 954 is fixedly arranged at one end of the third air inlet chamber 953;

[0098] The push rod 957 is movably disposed in the third air inlet chamber 953 and cooperates with the electromagnetic valve 954. By energizing the electromagnetic valve 954, the push rod 957 is controlled to move in the third air inlet chamber 953.

[0099] The sealing block 956 is disposed at the other end of the push rod 957 and is movably disposed in the third air inlet cavity 953 and is closely fitted to the side wall of the third air inlet cavity 953;

[0100] One end of the first spring 955 is connected to the inner wall of the third air inlet cavity 953, and the other end is connected to the sealing block 956, so as to reset the sealing block 956;

[0101] During use, when the airway airbag 1 is depressurized, that is, during normal use, the first spring 955 is in an extended state, and the sealing block 956 is located at the air outlet end of the second air inlet cavity 952, closing the second air inlet cavity 952. At this time, the movable frame 92 moves in the pressure relief and pressurization tank 9 under the drive of the motor 3 to adjust the film cavity 94 so that the chamber becomes larger, so that the air inlet 91 is opened, and then the gas in the airway airbag 1 enters the film cavity 94 under the action of negative pressure and pressure difference, thereby completing the depressurization of the airway airbag 1;

[0102] When the airway airbag 1 is rapidly pressurized or the constant-pressure air chamber 41 is rapidly pressurized, the solenoid valve 954 is energized, and the sealing block 956 is adjusted to move to the first air inlet chamber 951 to close the first air inlet chamber 951. At this time, the second air inlet chamber 952 is opened. At this time, the movable frame 92 moves in the pressure relief and pressurization tank 9 driven by the motor 3 to adjust the chamber of the film chamber 94 to become larger, so that the air inlet 91 is opened to suck the external gas into the film chamber 94. Then, the movable frame 92 moves in the pressure relief and pressurization tank 9 to adjust the chamber of the film chamber 94 to become smaller. The gas enters the pressure chamber 41 and the airway airbag 1, thereby completing the rapid pressurization of the airway airbag 1 or the constant-pressure air chamber 41.

[0103] When the artificial airway airbag pressure regulating device for air transport is used,

[0104] Step 1: first insert the airway bag 1 into the patient's airway to transport the patient;

[0105] Step 2: During the flight in a high-altitude environment, as the flight altitude increases, due to the decrease in external pressure, when the potential signal of the potentiometer 6 increases and is greater than the set potential signal U MAX , the first control valve 44 is closed and a control command is sent to the motor 3. Driven by the motor 3, the movable frame 92 moves in the pressure relief and pressurization tank 9 to adjust the film cavity 94 so that the gas in the airway airbag 1 is compressed by the second spring 959 in the air inlet 91 under the action of negative pressure and pressure difference. At this time, the air inlet 91 is opened, and then the gas in the airway airbag 1 enters the film cavity 94 under the action of negative pressure and pressure difference, completing the pressure relief of the airway airbag 1. When the potential signal U of the potentiometer 6 is between U MIN 检测 MAX When the time is between, the motor 3 stops moving;

[0106] Step 3: During the flight in a high-altitude environment, as the flight altitude decreases, due to the increase in external pressure, when the potential signal of the potentiometer 6 decreases and is less than the set potential signal U MIN When the first control valve 44 is opened, the high pressure gas in the constant pressure air chamber 41 is used to replenish the air in the airway airbag 1, and the potential signal U 检测 Between U MIN 检测 MAX When the temperature is between 0 and 100 °C, the first control valve 44 is closed;

[0107] When the high pressure gas in the constant pressure air chamber 41 is insufficient to replenish the air in the airway airbag 1, the potential signal U 检测 Between U MIN ​​​​检测 MAX In order to ensure the health of the patient, it is necessary to quickly replenish the gas in the airway airbag 1; energize the solenoid valve 954, adjust the sealing block 956 to move to the first air inlet chamber 951, and close the first air inlet chamber 951. At this time, the second air inlet chamber 952 is opened, and driven by the motor 3, the movable frame 92 moves in the pressure relief and pressurization tank 9 to adjust the chamber of the film cavity 94 to become larger, so that the air inlet 91 is opened, and then the external gas enters the film cavity 94 under the action of negative pressure and pressure difference, completing the rapid pressurization of the constant pressure cavity 41 and the airway airbag 1 to ensure the health of the patient and the use effect of the airway airbag 1.

[0108] Therefore, through the design of the artificial airway bag pressure regulating device for air transport, the airway bag pressure can be adjusted in real time and adaptively during the transportation of the patient by airplane to protect the patient's airway.

[0109] The minimum potential U of the potentiometer 6 MIN and maximum potential U MAX The setting depends on the range of variation in the patient's airway during normal breathing.

[0110] Embodiment 6:

[0111] Different from the above embodiment, Fig.11 and Fig.12 As shown, when the artificial airway bag pressure regulating device for air transport is actually used, the airway bag 1 is inserted into the patient's airway under ground conditions, so that the pressure value of the airway bag 1 is 25-30cmH2O, and it is tightly combined with the airway to prevent leakage. The amount of air in the airway bag 1 is about 15ml. The standard atmospheric pressure is 1033.6cmH20 pressure, so when the pressure of 28cmH20 is 15ml, the amount of air injected into the airbag is ((1033.6+28) / 1033.6)*15=15.4ml. When in use, the required air volume V in the current airway bag 1 can be calculated based on the pressure value of the airway bag 1 at different altitudes. 需， By calculating V 需 The current air volume V in the airway airbag 1 当 The difference is used to control the working number and speed of the motor 3, and adaptively adjust the air volume in the airway airbag 1 to protect the patient's airway.

[0112] ​​It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0113] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An artificial airway bag pressure regulating device for air transport, characterized in that: include: An air supply pressure regulating pipeline (2), one end of which is connected to the airway airbag (1), and the other end of which is connected to the constant pressure air supply tank (4); The motor (3) is arranged at one end of the pressure relief and pressurization tank (9), and an adaptive pressure regulating mechanism is arranged in the pressure relief and pressurization tank (9) and connected to the motor (3); A constant pressure air supply tank (4) is arranged at the other end of the pressure relief and pressurization tank (9), connected to the pressure relief and pressurization tank (9) via a connecting pipe (5), and an air bag pressure detection component is arranged at the air pressure supply end of the constant pressure air supply tank (4); An air intake pipe (7), one end of which is connected to the air supply pressure regulating pipe (2), and the other end of which is connected to the pressure relief and pressurizing tank (9); A pressure relief and pressurizing tank (9) is arranged between the constant pressure air supply tank (4) and the connecting frame (10); A movable frame (92) is also movably arranged in the pressure relief and pressurization tank (9). The movable frame (92) is an L-shaped plate structure, and the movable frame (92) is provided with: An elastic film (921) is arranged on a side plate of the movable frame (92) and is closely attached to the inner wall of the pressure relief and pressurization tank (9), so that a closed film cavity (94) is formed between the elastic film (921) and the pressure relief and pressurization tank (9); The limiting hole (923) is an elliptical groove provided on the other side plate of the movable frame (92), and is used in conjunction with an eccentric wheel (32) provided at the end of the drive shaft of the motor (3).

2. The artificial airway bag pressure regulating device for air transport as claimed in claim 1, characterized in that: The airbag pressure detection component comprises: A first control valve (44) is arranged on the air pressure supply pipeline (43) of the constant pressure air supply tank (4); The potentiometer (6) is arranged on the air supply pressure regulating pipeline (2), and the air intake end of the air intake pipeline (7) is arranged between the first control valve (44) and the potentiometer (6).

3. The artificial airway bag pressure regulating device for air transport as claimed in claim 1, characterized in that: The outer end of the pressure relief and pressurization tank (9) is connected to the connecting frame (10) via a connecting bolt, and the connecting frame (10) is also provided with: A bearing (31) is disposed on the connecting frame (10) and is connected to a drive shaft at a drive end of the motor (3); The connecting pin (101) is symmetrically arranged on the connecting frame (10) and is used in conjunction with the motor (3).

4. The artificial airway bag pressure regulating device for air transport as claimed in claim 1, characterized in that: The movable frame (92) is also provided with a guide block (922), which is arranged on a side plate of the movable frame (92) on the same side as the elastic film (921) and is used in conjunction with a guide groove (93) arranged on the inner side wall of the pressure relief and pressurization tank (9).

5. The artificial airway bag pressure regulating device for air transport as claimed in claim 1, characterized in that: The adaptive pressure regulating mechanism is arranged in the film cavity (94), and comprises a pressure control member (95) arranged at the air inlet end of the air inlet (91) at the upper end of the pressure relief and pressurization tank (9), and a one-way control component arranged in the air inlet (91) and the exhaust port (96) at the lower end of the pressure relief and pressurization tank (9); and the one-way control component arranged in the air inlet (91) has an air inlet direction opposite to that of the one-way pressurization group arranged in the exhaust port (96), and the exhaust port (96) is connected to the connecting pipe (5).

6. The artificial airway bag pressure regulating device for air transport as claimed in claim 5, characterized in that: The pressure control member (95) is arranged on the air inlet (91), and a first air inlet chamber (951), a second air inlet chamber (952) and a third air inlet chamber (953) which are interconnected are arranged in the pressure control member (95), the first air inlet chamber (951) is in communication with the air intake duct (7), the air inlet of the second air inlet chamber (952) is in communication with the external environment, the third air inlet chamber (953) is horizontally arranged at the exhaust end of the first air inlet chamber (951) and the second air inlet chamber (952), is in communication with the air inlet (91), and a switching control component is arranged in the third air inlet chamber (953).

7. An artificial airway bag pressure regulating device for air transport as claimed in claim 6, characterized in that: The switching control component comprises: A solenoid valve (954) is fixedly arranged at one end of the third air inlet chamber (953); A push rod (957) is movably disposed in the third air inlet chamber (953) and cooperates with the solenoid valve (954); A sealing block (956) is arranged at the other end of the push rod (957) and is movably arranged in the third air inlet cavity (953) and is closely fitted to the side wall of the third air inlet cavity (953); One end of the first spring (955) is connected to the inner wall of the third air inlet cavity (953), and the other end is connected to the sealing block (956).

8. The artificial airway bag pressure regulating device for air transport as claimed in claim 5, characterized in that: The one-way control component comprises: A sealing ball (958) is movably disposed at the air inlet end of the exhaust port (96) and the air inlet (91), and is used in conjunction with the air inlet passages of the exhaust port (96) and the air inlet (91); The second spring (959) is movably disposed in the exhaust port (96) and the air inlet (91), and is connected to the sealing ball (958).

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