CN116492552A - Aviation medical ventilator gasbag pressure constant device - Google Patents
Aviation medical ventilator gasbag pressure constant device Download PDFInfo
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- CN116492552A CN116492552A CN202211611927.XA CN202211611927A CN116492552A CN 116492552 A CN116492552 A CN 116492552A CN 202211611927 A CN202211611927 A CN 202211611927A CN 116492552 A CN116492552 A CN 116492552A
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- 239000011159 matrix material Substances 0.000 claims abstract description 74
- 230000029058 respiratory gaseous exchange Effects 0.000 claims abstract description 17
- 230000005540 biological transmission Effects 0.000 claims abstract description 11
- 239000007789 gas Substances 0.000 claims description 75
- 239000000758 substrate Substances 0.000 claims description 39
- 238000001914 filtration Methods 0.000 claims description 17
- 238000002640 oxygen therapy Methods 0.000 claims description 8
- 210000004712 air sac Anatomy 0.000 claims description 7
- 238000005452 bending Methods 0.000 claims description 7
- 238000009434 installation Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- 238000004891 communication Methods 0.000 claims description 2
- 238000012544 monitoring process Methods 0.000 description 12
- 210000003437 trachea Anatomy 0.000 description 11
- 206010035664 Pneumonia Diseases 0.000 description 9
- 208000009470 Ventilator-Associated Pneumonia Diseases 0.000 description 9
- 239000012535 impurity Substances 0.000 description 9
- 206010036790 Productive cough Diseases 0.000 description 8
- 241000894006 Bacteria Species 0.000 description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 6
- 229910052760 oxygen Inorganic materials 0.000 description 6
- 239000001301 oxygen Substances 0.000 description 6
- 239000000203 mixture Substances 0.000 description 5
- 238000002627 tracheal intubation Methods 0.000 description 5
- 230000000712 assembly Effects 0.000 description 4
- 238000000429 assembly Methods 0.000 description 4
- 210000000621 bronchi Anatomy 0.000 description 4
- 230000028327 secretion Effects 0.000 description 4
- 208000000059 Dyspnea Diseases 0.000 description 3
- 206010013975 Dyspnoeas Diseases 0.000 description 3
- 230000006378 damage Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000004393 prognosis Methods 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 210000004072 lung Anatomy 0.000 description 2
- 238000005399 mechanical ventilation Methods 0.000 description 2
- 210000004877 mucosa Anatomy 0.000 description 2
- 239000012465 retentate Substances 0.000 description 2
- 210000003802 sputum Anatomy 0.000 description 2
- 208000024794 sputum Diseases 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 206010021143 Hypoxia Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004064 dysfunction Effects 0.000 description 1
- 230000007954 hypoxia Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 210000004400 mucous membrane Anatomy 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 230000000241 respiratory effect Effects 0.000 description 1
- 230000000451 tissue damage Effects 0.000 description 1
- 231100000827 tissue damage Toxicity 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/0057—Pumps therefor
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/71—Suction drainage systems
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/0003—Accessories therefor, e.g. sensors, vibrators, negative pressure
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/0087—Environmental safety or protection means, e.g. preventing explosion
- A61M16/009—Removing used or expired gases or anaesthetic vapours
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/04—Tracheal tubes
- A61M16/0463—Tracheal tubes combined with suction tubes, catheters or the like; Outside connections
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/10—Preparation of respiratory gases or vapours
- A61M16/105—Filters
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L11/00—Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by means not provided for in group G01L7/00 or G01L9/00
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/0003—Accessories therefor, e.g. sensors, vibrators, negative pressure
- A61M2016/0027—Accessories therefor, e.g. sensors, vibrators, negative pressure pressure meter
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
- Y02A50/2351—Atmospheric particulate matter [PM], e.g. carbon smoke microparticles, smog, aerosol particles, dust
Abstract
The invention discloses an aviation medical breathing machine air bag pressure constant device, which comprises a pressure control matrix, wherein the pressure control matrix is of a hollow cylinder structure, the bottom of the side wall of the pressure control matrix is provided with a gas transmission port and an air bag interface, and the top of the side wall of the pressure control matrix is provided with a gas outlet; the filter assembly is coaxially arranged in the gas transmission port and the gas exhaust port; the pressure control assembly is respectively arranged on the inner bottom surface and the inner top surface of the pressure control matrix; the pressure control assembly consists of a plurality of filter screen plates, the adjacent filter screen plates are fixedly connected through a folding bent plate, a mounting boss is arranged on the folding bent plate, an elastic piece is fixedly connected to the mounting boss, the expansion direction of the elastic piece is consistent with that of the folding bent plate, and an air bag interface and an air delivery port are oppositely arranged; the pressure sensor senses the pressure in the first air bag, and the inflation and deflation of the matrix are controlled by the pressure sensor, so that the air pressure in the first air bag is maintained within the range of 25-30 cmH 2O.
Description
Technical Field
The invention relates to the technical field of aviation medical equipment, in particular to an aviation medical breathing machine air bag pressure constant device.
Background
For the patient with respiratory dysfunction, the breathing machine is matched with the trachea cannula to be an important rescue apparatus, secretion or foreign matters which prevent breathing in the trachea can be sucked out more rapidly while breathing is assisted, medical staff can carry out manual or mechanical ventilation on the patient by virtue of the trachea cannula, the hypoxia or the overhigh carbon dioxide concentration of the patient is avoided, and the using method of the trachea cannula approximately comprises the following steps: the trachea cannula is used for being sent into on the end of inserting in the patient's air flue, be provided with an inflatable fixed gasbag generally, this fixed gasbag extends to outside with the gas import through the pipe, fixed gasbag fills the back and is fixed in the trachea, thereby reach the purpose of fixed trachea cannula's insertion depth, and through research and development aviation medical rescue artifical air flue gasbag constant voltage accurate control device, realize from taking off, the gasbag pressure continuous monitoring and automatic accurate control of the time phase of flight to the landing, alleviate the air flue mucous membrane damage, reduce VAP incidence, improve aviation rescue efficiency and ability, can improve patient prognosis, alleviate the relief personnel work load.
The tracheal intubation structure (KR 101877533B 1) for removing expectoration disclosed in the prior art can be cleaned along with the outer surface of a tracheal intubation in a state of being fixed in the trachea, not only can be used for a long time without replacement, but also can prevent a fixing module of the tracheal inner wall in the tracheal intubation from causing continuous pressure on the tracheal inner wall, thereby preventing pressure on the tracheal inner wall of a patient, further preventing tissue damage caused by the tracheal intubation, and is also used for helping a patient incapable of autonomously expectorating the expectoration to remove the expectoration in equipment for removing the expectoration, and when the tracheal intubation device is used, firstly, the expectoration is sucked in a state of being inserted into the bronchus of the patient, so that the expectoration is guided into a sleeve in the bronchus; in clinical practice, for mechanical ventilation of patients with dyspnea, the above-mentioned prior art cannot stably control the air pressure of the air bag in the air pipe of the patient, so it is necessary to provide an air bag pressure constant device of an aviation medical ventilator to solve the shortages in the above-mentioned prior art.
Disclosure of Invention
The invention aims to provide an aviation medical breathing machine air bag pressure constant device, which is used for improving the monitoring precision of a pressure sensor, reducing the probability of introducing impurity-carrying gas into a pressure control matrix at a gas transmission port and a gas exhaust port and controlling the flow rate and the flow direction of the gas entering the pressure control matrix.
In order to achieve the above purpose, the present invention provides the following technical solutions: the air bag pressure constant device of the aviation medical breathing machine comprises a pressure control matrix, wherein the pressure control matrix is of a hollow cylinder structure, the bottom of the side wall of the pressure control matrix is provided with an air delivery port and an air bag interface, and the top of the side wall of the pressure control matrix is provided with an air outlet; the filter assembly is coaxially arranged in the gas transmission port and the gas exhaust port; the pressure control assembly is respectively arranged on the inner bottom surface and the inner top surface of the pressure control matrix; the oxygen delivery assembly is communicated with the pressure control matrix; the pressure control assembly consists of a plurality of filter screen plates, the central lines of the filter screen plates are overlapped, adjacent filter screen plates are fixedly connected through a folding bent plate, an installation boss is arranged on the folding bent plate, an elastic piece is fixedly connected to the installation boss, the expansion direction of the elastic piece is consistent with that of the folding bent plate, the central lines of an air bag interface and an air delivery port are overlapped, and the air bag interface and the air delivery port are oppositely arranged.
According to the aviation medical breathing machine air bag pressure constant device, the pressure sensor senses the pressure in the first air bag, the air pressure in the first air bag is maintained within the range of 25-30 cm H2O through the inflation and deflation of the pressure control matrix, when the pressure in the air bag is lower than the lower limit of the air pressure range, the air pump automatically inflates the pressure control matrix, and when the pressure is higher than the upper limit of the air pressure range, the air pump automatically deflates the pressure control matrix, so that the automatic pressure adjustment of the first air bag is realized.
According to the aviation medical ventilator air bag pressure constant device, through the arrangement of the pressure control assembly, for the air flow flowing in a plurality of directions frequently in the pressure control matrix, the flow direction of the air flow can be controlled, turbulence is avoided, the air pressure difference in the pressure control matrix can be reduced, the monitoring precision of the pressure sensor is improved, the situation that the air bag pressure exceeds a normal range is avoided, the occurrence rate of VAP (ventilator-associated pneumonia) is further reduced, more particularly, when oxygen-air mixed gas is pumped into the pressure control matrix only through the gas delivery port, due to the increase of the internal pressure, the pressure control assembly generates a shrinkage phenomenon, the distance between the filter screen plates of the two pressure control assemblies is increased, and reaction force is generated for the air in the filter screen plates, so that the air pressure generated in the pressure control matrix is mainly concentrated in a space area formed between the filter screen plates of the two pressure control assemblies, and the pressure sensor is arranged in the area to monitor the air pressure changing in real time, so that the pressure control matrix can realize the monitoring data precision of the pressure sensor, and the breathing source is better provided for a patient; the maximum shrinkage of the pressure control assembly is not lower than the height of the air bag interface, and the effectiveness of the pressure control assembly on air flow control and air flow filtration can be ensured when the oxygen-air mixture is introduced into the first air bag for the first time through the air bag interface.
The pressure control assembly can carry out fine filtration on the gas entering the pressure control matrix on the other hand, because the outside air is introduced into the gas transmission port, the possibility of impurities and bacteria in the gas is high, and the gas containing impurities and bacteria possibly remains in the gas pipe communicated with the gas exhaust port, so that the mixed gas of oxygen and air in the inner bottom area and the inner top area of the pressure control matrix is filtered through the filter screen plate on the pressure control assembly, and the probability of introducing the gas carrying impurities into the pressure control matrix at the gas transmission port and the gas exhaust port is reduced.
According to one embodiment of the invention, the filter assembly is provided with a filter substrate, the filter substrate is provided with a funnel-shaped structure, a guide arc plate is fixedly arranged in the end part, close to the large-diameter end of the filter substrate, the guide arc plate is provided with an arc circular plate structure with an opening in the middle, one side of the guide arc plate is provided with a filter plate, the filter plate is coaxially arranged in the filter substrate, and the end part, close to the small-diameter end of the filter substrate, of the filter substrate is provided with a buffer substrate.
The buffer substrate has a tubular structure, the inner diameter of the buffer substrate gradually reduces from two ends to the middle, an exhaust pipe body is arranged on the side wall of one end part of the buffer substrate, a check valve is arranged in the exhaust pipe body, the other end part of the buffer substrate is provided with a screw connection part, an auxiliary filtering piece is arranged in the buffer substrate, and an end cover is arranged at one end part of the buffer substrate.
The auxiliary filter piece is provided with a telescopic base, the auxiliary filter piece is provided with a fixed base, the telescopic base and the fixed base are arranged in parallel, and fine filter paper is arranged between the telescopic base and the fixed base.
According to the aviation medical breathing machine air bag pressure constant device, through the arrangement of the filtering component, not only can the filtration of gas be realized, but also the flow speed and the air flow direction of the gas entering the pressure control matrix can be controlled, so that the quality of oxygen-air mixed gas and the air pressure in the pressure control matrix are balanced and stable; more specifically, by utilizing Bernoulli principle, a part of air flow input to the air delivery port by the air pump is divided into two parts of divergent air flow and convergent air flow by the convex surface of the guide arc plate, the divergent air flow is impacted with the convex surface of the guide arc plate when flowing through the side wall of the filter substrate, and forms backflow or rotational flow towards the original air flow direction, so that the impact force of the air on the guide arc plate and the filter plate is slowed down, the improvement of the filtering effect is facilitated, meanwhile, the vibration and noise generated during ventilation are reduced, the air flow is accelerated to enter the auxiliary filter element through the venturi-shaped structure of the buffer substrate after passing through the filter plate, is further filtered through the fine filter paper, and is discharged from the exhaust pipe body into the pressure control substrate; to further enhance the quality of the gas within the pressure control matrix, a filter assembly may also be provided in the vent to prevent backflow that may occur due to changes in the gas pressure within the pressure control matrix.
On the other hand, the filter assembly is designed through the exhaust pipe body, the check valve is utilized to prevent the gas from flowing backwards, the gas in the pressure control matrix is prevented from escaping to the direction of the gas pump at the moment when the gas transmission port of the pressure control matrix is connected or disconnected at the gas pump port, the monitoring accuracy of the pressure sensor is improved, the pressure inside the first gas bag is ensured to be constantly within a controllable range, more particularly, one side of the check valve in the exhaust pipe body is positioned in the space range of the pressure control matrix or the space range outside the pressure control matrix, rather than being arranged in a pipeline with only a single gas flow direction, according to the basic structure of the check valve, a swinging plate or other check components possibly have part of gas flow to flow backwards from the installation gap of the swinging plate or the check valve body in the reverse closing process, and the filter assembly in the device is used for preventing the part of the gas flow from flowing backwards through the cooperation of the exhaust pipe body and the auxiliary filter element, when the backflow gas is generated, the gas flow flows from the small radial end of the auxiliary filter element, and the gas flow generates large flow resistance for a small quantity of gas flow, and therefore the pressure of the gas flow in the reverse direction is prevented from increasing instantaneously, the pressure of the gas flow in the reverse direction of the air flow control matrix is prevented from flowing backwards in the process of the first gas flow, and the reverse flow control structure is prevented from increasing the pressure in the process of the reverse direction, and the pressure control of the air flow has the pressure control of the pressure control element.
According to one embodiment of the invention, the oxygen therapy assembly is provided with an air pipe, one end of the air pipe is provided with a first air bag, a first air pressure control pipe and a first subglottal suction pipe are communicated with the air pipe, and one end of the first air pressure control pipe is communicated with the first air bag.
This aviation medical ventilator gasbag pressure constant device, through the setting of oxygen therapy subassembly, make it can cooperate the breathing machine to provide oxygen-air mixture for the patient of dyspnea, and insert pressure control base member through first pneumatic control pipe, make it to the continuous monitoring and the automatic control of gasbag pressure during the rescue of artifical air flue patient's air traffic or transfer, in order to alleviate the damage of air flue mucosa, reduce the VAP incidence, improve patient prognosis, alleviate rescue personnel work load, first subglottal suction pipe inserts the sputum aspirator, through the subglottal secretion of negative pressure suction, prevent that the retentate from inhaling bronchus and lung by mistake on the first gasbag.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the aviation medical ventilator air bag pressure constant device, through the arrangement of the pressure control assembly, for the air flow which frequently flows in a plurality of directions in the pressure control matrix, the flow direction of the air flow can be controlled, the generation of turbulent flow is avoided, the air pressure difference in the pressure control matrix can be reduced, the monitoring precision of the pressure sensor is improved, the condition that the air bag pressure exceeds the normal range is avoided, and the occurrence rate of VAP (ventilator associated pneumonia) is further reduced;
2. according to the aviation medical breathing machine air bag pressure constant device, through the arrangement of the pressure control assembly, the air entering the pressure control matrix can be finely filtered, because the air conveying port is filled with external air, the possibility of impurities and bacteria in the air is high, and the air containing impurities and bacteria possibly remains in the air pipe communicated with the air outlet, the oxygen-air mixture in the inner bottom area and the inner top area of the pressure control matrix is filtered through the filter screen plate on the pressure control assembly, and the probability of introducing the air carrying impurities into the pressure control matrix at the air conveying port and the air outlet is reduced;
3. according to the aviation medical breathing machine air bag pressure constant device, through the arrangement of the filtering component, not only can the filtration of gas be realized, but also the flow speed and the air flow direction of the gas entering the pressure control matrix can be controlled, so that the quality of oxygen-air mixed gas and the air pressure in the pressure control matrix are balanced and stable;
4. this aviation medical ventilator gasbag pressure constant device utilizes the check valve to prevent that gas from flowing backward through the design of blast pipe body, is favorable to preventing that the inside gas of pressure control base member from escaping to the air pump direction at the moment of the gas-supply mouth of pressure control base member is connected or disconnected at the air pump port, is favorable to improving pressure sensor monitoring accuracy to ensure that the inside pressure of first gasbag is invariable in controllable within range.
Drawings
FIG. 1 is a schematic view of a configuration of a preferred embodiment of an air bag pressure constant device for an aviation medical ventilator according to the present invention;
FIG. 2 is a side view of the pressure control substrate of FIG. 1;
FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;
FIG. 4 is a schematic view of a filter assembly;
FIG. 5 is a top view of FIG. 4;
FIG. 6 is a cross-sectional view taken along line A-A of FIG. 5;
FIG. 7 is a schematic view of the auxiliary filter element of FIG. 6;
FIG. 8 is a schematic diagram of the pressure control assembly of FIG. 3;
fig. 9 is a schematic structural view of another embodiment of the oxygen therapy assembly of fig. 1.
In the figure: 1. a pressure control matrix; 11. a gas transfer port; 12. an exhaust port; 13. an air bag interface; 2. a filter assembly; 21. a filtration matrix; 22. a diversion arc plate; 23. a filter plate; 24. a buffer substrate; 241. an exhaust pipe body; 242. a non-return valve; 25. an auxiliary filter; 251. a telescopic base; 252. a fixed base; 253. fine filter paper; 26. an end cap; 3. a pressure control assembly; 31. a filter screen plate; 32. folding the bending plate; 321. a mounting boss; 322. an elastic member; 4. an oxygen delivery assembly; 41. an endotracheal tube; 42. a first pneumatic control tube; 421. a first air bag; 43. a second air pressure control tube; 431. a second air bag; 44. a first subglottic suction tube; 45. the second sound door is provided with a lower suction tube.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-3, fig. 8, one embodiment of the present invention provides: the utility model provides an aviation medical ventilator gasbag pressure constant device, includes, pressure control base member 1 has hollow cylinder structure, and the lateral wall bottom of pressure control base member 1 has offered defeated gas port 11 and air bag interface 13, and the lateral wall top of pressure control base member 1 has offered gas vent 12; the filter component 2 is coaxially arranged in the gas transmission port 11 and the gas exhaust port 12; the pressure control assembly 3 is respectively arranged on the inner bottom surface and the inner top surface of the pressure control matrix 1; an oxygen delivery assembly 4, the oxygen delivery assembly 4 being in communication with the pressure control matrix 1; the pressure control assembly 3 is composed of a plurality of filter screen plates 31, the central lines of the filter screen plates 31 are coincident, adjacent filter screen plates 31 are fixedly connected through a folding bending plate 32, a mounting boss 321 is arranged on the folding bending plate 32, an elastic piece 322 is fixedly connected to the mounting boss 321, the expansion direction of the elastic piece 322 is consistent with that of the folding bending plate 32, the central lines of an air bag interface 13 and an air delivery port 11 are coincident, and the air bag interface 13 and the air delivery port 11 are oppositely arranged.
The aviation medical ventilator air bag pressure constant device senses the pressure in the first air bag 421 through the pressure sensor, and the air pressure in the first air bag 421 is maintained in the range of 25-30 cm H2O through the inflation and deflation of the pressure control matrix 1, when the pressure in the air bag is lower than the lower limit of the air pressure range, the air pump automatically inflates the pressure control matrix 1, and when the pressure is higher than the upper limit of the air pressure range, the air pump automatically deflates the pressure control matrix 1, so that the automatic pressure adjustment of the first air bag 421 is realized.
According to the aviation medical ventilator air bag pressure constant device, through the arrangement of the pressure control assembly 3, for the air flow flowing in a plurality of directions frequently in the pressure control matrix 1, the flow direction of the air flow can be controlled, turbulence is avoided, the air pressure difference in the pressure control matrix 1 can be reduced, the monitoring precision of the pressure sensor is improved, the condition that the air bag pressure exceeds a normal range is avoided, the occurrence rate of VAP (ventilator-associated pneumonia) is further reduced, more particularly, when oxygen-air mixed gas is introduced into the pressure control matrix 1 only through the gas transmission port 11 for pressurization, the pressure control assembly 3 generates a shrinkage phenomenon due to the increase of the internal pressure, the distance between the filter screen plates 31 of the two pressure control assemblies 3 is increased, and a reaction force is generated on the air in the filter screen plates, so that the air pressure generated in the pressure control matrix 1 is mainly concentrated in a space area formed between the filter screen plates 31 of the two pressure control assemblies 3, and the real-time changing air pressure is monitored in the area through the arrangement of the pressure sensor, the pressure control matrix 1 can realize the data accuracy of the monitoring of the pressure sensor, and the breathing machine can better assist the patient air source is provided for the patient; the maximum shrinkage of the pressure control assembly 3 should not be lower than the height of the air bag interface 13, so that the effectiveness of the pressure control assembly 3 for controlling and filtering air flow can be ensured when the oxygen-air mixture is introduced into the first air bag 421 for the first time through the air bag interface 13.
On the other hand, the pressure control assembly 3 can finely filter the gas entering the pressure control matrix 1, because the gas inlet 11 is filled with external air, impurities and bacteria in the gas are likely to be high, and the gas containing impurities and bacteria possibly remains in the gas pipe communicated with the gas outlet 12, so that the mixed gas of oxygen and air in the inner bottom and inner top areas of the pressure control matrix 1 is filtered through the filter screen plate 31 on the pressure control assembly 3, and the probability of filling the gas carrying impurities into the pressure control matrix 1 at the gas inlet 11 and the gas outlet 12 is reduced.
Referring to fig. 1-7, the filter assembly 2 has a filter substrate 21, the filter substrate 21 has a funnel-shaped structure, a guide arc plate 22 is fixedly arranged in an end portion, close to a large diameter end of the filter substrate 21, the guide arc plate 22 has an arc-shaped circular plate structure with an opening in the middle, a filter plate 23 is arranged on one side of the guide arc plate 22, the filter plate 23 is coaxially arranged in the filter substrate 21, and a buffer substrate 24 is arranged at an end portion, close to a small diameter end of the filter substrate 21.
The buffer substrate 24 has a tubular structure, the inner diameter of the buffer substrate 24 gradually decreases from two ends to the middle, an exhaust pipe body 241 is arranged on the side wall of one end part of the buffer substrate 24, a check valve 242 is arranged in the exhaust pipe body 241, the other end part of the buffer substrate 24 is provided with a screw connection part, an auxiliary filter 25 is arranged in the buffer substrate 24, and an end cover 26 is arranged at one end part of the buffer substrate 24.
The auxiliary filter 25 has a telescopic base 251, the auxiliary filter 25 has a fixed base 252, the telescopic base 251 and the fixed base 252 are arranged in parallel, and a fine filter paper 253 is arranged between the telescopic base 251 and the fixed base 252.
According to the aviation medical breathing machine air bag pressure constant device, through the arrangement of the filtering component 2, not only can the filtration of gas be realized, but also the flow speed and the air flow direction of the gas entering the pressure control matrix 1 can be controlled, so that the quality of oxygen-air mixed gas and the air pressure in the pressure control matrix 1 are balanced and stable; more specifically, by using the bernoulli principle, a part of the air flow input by the air pump to the air inlet 11 is divided into two parts of divergent air flow and convergent air flow by the convex surface of the deflector 22, when the divergent air flow flows along the convex surface of the deflector 22 and passes through the side wall of the filter substrate 21, the divergent air flow collides with the divergent air flow and forms backflow or rotational flow to the original air flow direction, so that the impact force of the air to the deflector 22 and the filter plate 23 is slowed down, the filtering effect is improved, and meanwhile, the vibration and noise generated during ventilation are reduced, the air flow is accelerated to enter the auxiliary filter element 25 through the venturi structure of the buffer substrate 24 after passing through the filter plate 23, is further filtered through the fine filter paper 253, and is discharged from the exhaust pipe body 241 to the inside of the pressure control substrate 1; in order to further increase the quality of the gas inside the pressure control matrix 1, a filter assembly 2 may also be provided in the exhaust port 12 to prevent backflow that may occur due to changes in the gas pressure inside the pressure control matrix 1.
On the other hand, the filter assembly 2 prevents the reverse flow of gas by the design of the exhaust pipe body 241 by means of the check valve 242, which is advantageous in preventing the gas inside the pressure control body 1 from escaping in the direction of the air pump at the moment when the gas inlet 11 of the pressure control body 1 is connected or disconnected at the air pump port, and in improving the monitoring accuracy of the pressure sensor, so as to ensure the pressure inside the first air bag 421 to be constantly within a controllable range, more specifically, since one side of the check valve 242 in the exhaust pipe body 241 is located within the space of the pressure control body 1 or within the space outside the pressure control body 1, instead of being located in a pipe having only a single air flow direction, depending on the basic construction of the check valve 242, the swing plate or other check member thereof is provided during the reverse closing check, there may be a part of the air flow flowing back from the installation space of the swing plate or the valve body of the check valve 242, and the filtering component 2 in the device blocks the backflow of the part of the air flow through the cooperation of the exhaust pipe 241 and the auxiliary filtering member 25, when the backflow air is generated, the air flow flows from the large-diameter end to the small-diameter end of the auxiliary filtering member 25, and a large flow resistance is generated for a small amount of air flow, so that the instant air pressure increase caused by the air flow backflow is avoided, that is, the problem that the air pressure in the pressure control matrix 1 is instantaneously increased due to the air flow backflow in the reverse closing and stopping process of the swing plate or other check valve 242 is solved, and the constant control of the pressure in the first air bag 421 is facilitated.
Referring to fig. 1, the oxygen therapy assembly 4 has an endotracheal tube 41, a first air bag 421 is disposed at an end of the endotracheal tube 41, a first air pressure control tube 42 and a first subglottal suction tube 44 are connected to the endotracheal tube 41, and one end of the first air pressure control tube 42 is connected to the first air bag 421.
This aviation medical ventilator gasbag pressure constant device, through the setting of oxygen therapy component 4, make it can cooperate the breathing machine to provide oxygen-air mixture for the patient of dyspnea, and insert pressure control base member 1 through first pneumatic control pipe 42, make it to the continuous monitoring and the automatic control of gasbag pressure during the rescue of artifical air flue patient's air traffic or transfer, in order to alleviate the damage of air flue mucosa, reduce the VAP incidence, improve patient's prognosis, alleviate rescue personnel work load, first subglottal suction pipe 44 inserts the sputum aspirator, through the lower secretion of negative pressure suction subglottal secretion, prevent that the retentate from inhaling bronchus and lung by mistake on the first gasbag 421.
Embodiment two:
based on the first embodiment, referring to fig. 9, a second air pressure control tube 43 and a second lower suction tube 45 are connected to the tracheal tube 41, a second air bag 431 is disposed at one end of the tracheal tube 41, and one end of the second air pressure control tube 43 is connected to the second air bag 431.
By arranging the second air sac 431 near the first air sac 421, the fixing effect of the tracheal catheter 41 in the patient's trachea is ensured, the problem that the tracheal catheter 41 slides into the human body due to insufficient air pressure of the first air sac 421 is avoided, the contact area between the air sac and the inner wall of the patient's trachea is enlarged, the sliding resistance is increased, and the situation that the air sac slides excessively in the patient's trachea in an uninflated state is avoided.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (7)
1. An aviation medical breathing machine air bag pressure constant device comprises,
the pressure control matrix (1), the pressure control matrix (1) has a hollow cylinder structure, the bottom of the side wall of the pressure control matrix (1) is provided with a gas transmission port (11) and a gas inlet (13), and the top of the side wall of the pressure control matrix (1) is provided with a gas outlet (12);
the filter assembly (2) is coaxially arranged in the gas transmission port (11) and the gas exhaust port (12);
the pressure control assembly (3) is respectively arranged on the inner bottom surface and the inner top surface of the pressure control matrix (1);
an oxygen therapy assembly (4), the oxygen therapy assembly (4) being in communication with the pressure control matrix (1);
the method is characterized in that: the pressure control assembly (3) is composed of a plurality of filter screen plates (31), the central lines of the filter screen plates (31) are coincident, the filter screen plates (31) are adjacent to each other, the filter screen plates (31) are fixedly connected with each other through a folding bending plate (32), an installation boss (321) is arranged on each folding bending plate (32), an elastic piece (322) is fixedly connected to each installation boss (321), and the stretching direction of the elastic piece (322) is consistent with that of the folding bending plate (32).
2. An aviation medical ventilator balloon pressure constancy apparatus of claim 1 wherein: the air bag interface (13) is coincident with the central axis of the air delivery port (11), and the air bag interface (13) and the air delivery port (11) are arranged oppositely.
3. An aviation medical ventilator balloon pressure constancy apparatus of claim 1 wherein: the filter assembly (2) is provided with a filter matrix (21), the filter matrix (21) is provided with a funnel-shaped structure, a guide arc plate (22) is fixedly arranged in the end part of the large-diameter end, close to the filter matrix (21), of the filter matrix, the guide arc plate (22) is provided with an arc-shaped circular plate structure with an opening in the middle, one side of the guide arc plate (22) is provided with a filter plate (23), the filter plate (23) is coaxially arranged in the filter matrix (21), and the end part of the small-diameter end of the filter matrix (21) is provided with a buffer matrix (24).
4. An aviation medical ventilator balloon pressure constancy apparatus according to claim 3, wherein: the buffer substrate (24) is of a tubular structure, the inner diameter of the buffer substrate (24) gradually reduces from two ends to the middle, an exhaust pipe body (241) is arranged on one end side wall of the buffer substrate (24), a check valve (242) is arranged in the exhaust pipe body (241), a screw connection portion (243) is arranged at the other end of the buffer substrate (24), an auxiliary filtering piece (25) is arranged in the buffer substrate (24), and an end cover (26) is arranged at one end of the buffer substrate (24).
5. An aviation medical ventilator balloon pressure constancy apparatus of claim 4 wherein: the auxiliary filter (25) is provided with a telescopic base (251), the auxiliary filter (25) is provided with a fixed base (252), the telescopic base (251) and the fixed base (252) are arranged in parallel, and a fine filter paper (253) is arranged between the telescopic base (251) and the fixed base (252).
6. An aviation medical ventilator balloon pressure constancy apparatus of claim 1 wherein: the oxygen therapy assembly (4) is provided with an endotracheal tube (41), a first air bag (421) is arranged at one end part of the endotracheal tube (41), a first air pressure control tube (42) and a first subglottal suction tube (44) are communicated with the endotracheal tube (41), and one end of the first air pressure control tube (42) is communicated with the first air bag (421).
7. The aviation medical ventilator balloon pressure constancy apparatus of claim 6 wherein: the tracheal catheter (41) is communicated with a second air pressure control tube (43) and a second lower suction tube (45), a second air sac (431) is arranged at one end of the tracheal catheter (41), and one end of the second air pressure control tube (43) is communicated with the second air sac (431).
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| CN116492552B (en) | 2023-11-07 |
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