A gas mixing humidification device for oxygen therapy

Abstract

A gas mixing humidification device for oxygen therapy; humidification liquid can be pre-filled in a closed humidification bottle; there are two side holes on the side wall below the oxygen inlet, and the surface is wrapped with an overpressure protection valve sheet; there is a window on the side wall of the upper middle section of the shell, and an air adjustment ring is installed on the outside, and the side wall of the adjustment ring has two openings. There is an air filter in the inner cavity of the middle section of the upper shell, and the mixed gas is introduced into the spiral radial grooves on the bottom surface of the humidification plate through a hose; the high-speed airflow interacts with the water surface of the humidification water surface plate carried by the float to form a jet effect, stimulate water vapor atomization, and humidify the mixed gas. The mixing ratio of oxygen and air can be adjusted by changing the coverage of the air adjustment ring on the opening of the upper shell; the humidification rate can be adjusted by changing the distance between the humidification water surface plate and the bottom surface of the humidification plate. This device has the functions and characteristics of no noise during the humidification process, automatic tracking of the humidification liquid plane, maintaining a stable humidification rate, and adjustable oxygen concentration.

Description

Technical Field

[0001] The present invention relates to a gas mixing and humidifying device for oxygen therapy, and in particular to a device which can adjust the mixing ratio of oxygen and air and the humidification rate (humidity) of the mixed gas during oxygen inhalation therapy. Background Art

[0002] Oxygen therapy is a treatment method that provides patients with oxygen content higher than that in ordinary air. It aims to improve the oxygenation capacity of hemoglobin, increase blood oxygen concentration, improve tissue metabolism, promote tissue repair and functional reconstruction, etc. Oxygen therapy usually uses mechanical methods (atomization, humidification, high-frequency oscillation, etc.) to deliver a certain concentration of oxygen to the patient's respiratory tract.

[0003] Scientific research has proven that aerobic organisms will suffer from oxygen poisoning after a period of time in a high-pressure pure oxygen environment. The same is true for humans. In mild cases, oxygen poisoning pneumonia will occur, because carbon dioxide can stimulate the nerve center to make people breathe actively, and if pure oxygen is inhaled, the nerve center will be paralyzed; eventually, death will occur due to respiratory failure. All tissues of the human body cannot withstand excessive oxygen, because oxygen itself can react with unsaturated fatty acids without enzyme catalysis, and can destroy the phospholipids that store these acids, and phospholipids are the main components of cell biological membranes, which ultimately cause cell death. This process is called lipid peroxidation. In addition, oxygen damages cells because it can produce free radicals and induce cancer.

[0004] At present, all kinds of oxygen inhalation devices pass the high-pressure oxygen in the gas cylinder through a pressure reducing valve, and then use a float valve flowmeter to adjust and measure the oxygen flow rate; medical pure oxygen must be humidified with humidifying liquid before it can be supplied to patients; because the adult respiratory tract evaporates about 280ml of water every day; the humidity of the air during the human body's breathing process in nature is about 20-80%; if the humidity is not increased during use (no humidification treatment), pure oxygen will cause water evaporation in the human lungs and cause dehydration of body tissues.

[0005] The degree of humidification is divided into three levels: poor humidification, good humidification, and excessive humidification. Poor humidification makes it difficult to insert the suction tube, the sputum is thick and small, it is not easy to suck out, and the lung breath sounds are coarse or dry rales; good humidification means that the suction tube can be inserted smoothly, the sputum is thin, the amount is moderate, it is easy to suck out, and the lung breath sounds are clear; excessive humidification means that the suction tube can be inserted smoothly, the sputum is foamy or watery, the amount is large, it cannot be sucked out, and there are a lot of wet rales in the lungs; it can even induce pulmonary edema.

[0006] At present, all kinds of oxygen humidification bottles used in clinical practice are bottle-shaped containers with an outlet and an inlet. Pure oxygen is introduced into the humidification liquid (physiological saline or aqueous alcohol or low-concentration sodium bicarbonate solution) through a pipe through the inlet to humidify the surface of the oxygen and increase its humidity. The humidified oxygen enters the human respiratory tract through the outlet of the humidification bottle through the oxygen inhalation tube.

[0007] At present, the oxygen humidification bottle devices seen at home and abroad only use various methods to improve the humidification degree and reduce or eliminate the sound of air passing through water (the sound of bubbles bursting when oxygen enters the humidification liquid and comes out of the water) during the humidification process. This is because in the ward, this sound will affect the patient's rest or others' sleep in the dead of night.

[0008] As for the adjustment of the mixing ratio of oxygen and air (oxygen concentration), it has not been reported in the current oxygen humidification bottles and literature. Because different diseases and patients have different inhaled oxygen concentrations during oxygen therapy. Too high oxygen concentrations often cause harm. In general, the oxygen concentration is related to the oxygen flow rate, and the calculation method is: oxygen concentration = 21% + oxygen flow rate × 2; common oxygen concentrations: [low flow 1-2L / min, medium flow 2-4L / min, higher flow 4~6L / min]. Special cases depend on the condition.

[0009] As for the function of adjusting the humidification degree of the mixed gas, the various humidification bottles currently used in clinical practice do not have it. During the breathing process, the human body needs different gas humidity in different seasons, different environments, and different temperatures. That is to say, during oxygen therapy, the humidification degree is different in different seasons, different environmental temperatures, and the area where the mixed gas (or oxygen) contacts the humidifying liquid. In medicine, the relationship between air humidity and breathing is very close. At a certain humidity, oxygen can easily enter the blood through the alveoli. Generally, people feel most comfortable at a relative humidity of 45-55%. The relative humidity in an overheated and unventilated room is generally low, which may be bad for the skin and irritate the mucous membranes. Excessive humidity affects the sweating function of people to regulate body temperature, and people will feel stuffy. In medicine, when oxygen therapy is performed for illness, the inhaled oxygen is a non-natural gas produced by industrial methods, which does not contain any water. The oxygen therapy process must be humidified before it can be used. If the humidity is not increased (humidification treatment) during use, pure oxygen will cause water evaporation in the human lungs and cause dehydration of the body. Summary of the invention

[0010] The present invention is designed to overcome the shortcomings of the current humidification bottle in the above oxygen therapy process.

[0011] The present invention is implemented as follows: a gas mixing and humidifying device for oxygen therapy, which is composed of an upper shell, a lower shell, an air and oxygen mixing adjustment mechanism, an air filter, a mixed gas humidification and adjustment mechanism, and a gas output interface; the air oxygen mixing ratio adjustment mechanism is composed of: an upper shell air window and an air adjustment ring; the air filter is composed of the inner wall of the middle section of the upper shell, an air filter membrane, and an air filter base; the mixed gas humidification and adjustment mechanism is composed of: a humidification plate, a humidification rate adjustment knob, a humidification water surface plate, and a humidification float. Oxygen enters through the inlet of the humidification device to form a jet, attracting air from the outside of the air window to enter (the window area can be adjusted to control the amount of air entering), and the mixed gas of oxygen and air passes through the air filter membrane and the hose into the central hole of the humidification plate. In the parabolic radial groove and between the humidification water surface plate, the jet formed by the high-speed gas excites water molecules to form atomization and humidification. By adjusting the distance between the humidification plate and the humidification water surface plate, the excitation oscillation effect of the gas jet on the water surface can be changed, and the atomization and humidification rate can be changed.

[0012] The specific implementation of the present invention is as follows: a gas mixing humidification device for oxygen therapy, which is composed of an oxygen inlet cover, an air conditioning ring, an oxygen overpressure protection valve plate, a mixed gas outlet cover plug, an air filter membrane, an air filter base, a hose, a humidification plate, a humidification rate adjustment knob, a humidification water surface plate, a humidification float, a lower shell, and an upper shell; its characteristics are: the humidification device can be pre-filled with 100ml to 300ml of humidification liquid (the ingredients are configured according to clinical or disease needs); an oxygen plug is inserted and sealed outside the oxygen inlet; a cover plug is inserted and sealed outside the mixed gas outlet; the oxygen overpressure protection valve plate sleeve is wrapped around the outer surface of the two side holes in the upper section of the upper shell to seal the side holes; the air conditioning ring is sleeved on the outer side of the middle section of the upper shell to cover the window opening on the side wall of the middle section of the upper shell; rotating the air conditioning ring can change the opening of the side wall of the air conditioning ring and the upper shell The overlap of the side wall windows is used to adjust the amount of air entering the upper shell and control the mixing ratio of oxygen and air. The adjustment amount can be indicated by the scale and numerical value printed on the outside of the air adjustment circle; the outer wall of the annular structure extending downward from the inner wall of the middle section of the upper shell has an annular protrusion that can be embedded and bonded with the annular groove on the inner edge of the air filter base to form a complete hollow structure of the air filter, inside which an air filter membrane is placed; one end of the hose is plugged and fixed to the center hole of the air filter base, and the other end is plugged and fixed to the center hole of the humidification plate; the mixed gas after filtering out particles is introduced into the center hole of the humidification plate through the hose and sprayed outward through the rotating radial guide grooves. Since the speed of the gas swirl and jet at the center hole of the bottom surface of the humidification plate is greater than the speed of the periphery; the jet formed by the high-speed and high-pressure gas stirs up water vapor between the humidification water surface plates to form atomization and humidification.

[0013] Adjusting the distance between the humidification plate and the humidification water surface plate can change the excitation oscillation effect of the gas jet on the water surface, and change the atomization and humidification rate. As the humidification liquid in the humidification device evaporates, the liquid level drops, the float also drops, and the humidification water surface plate of the float also changes accordingly, which can always keep the relative distance between the humidification plate and the humidification water surface plate consistent and keep the humidification rate stable.

[0014] The middle section side wall of the upper shell has two windows, and the area of ​​each window is 20-40% of the area of ​​the side wall of the section; the inner wall of the middle section of the upper shell has an annular structure extending downward, and an annular protrusion is arranged on the outer side thereof, and the diameter of the protrusion is slightly larger than the diameter of the outer peripheral inner wall of the air filter base. The air conditioning ring is a tubular structure, and its side wall has two rectangular openings, and the outer side of one end thereof has several longitudinal protrusions, which become a rotating handle; the outer surface of the air conditioning ring can be printed with scales and values ​​indicating the mixing ratio of air and oxygen. The air filter base is a disc-shaped structure, and the center thereof has a hole, and the inner surface thereof has several parabolic protrusions radiating outward along the center hole to support the air filter membrane; the inner wall of the disc-shaped structure of the base has an annular groove, which can be interlocked with the annular protrusion of the outer wall of the annular structure extending downward from the inner wall of the middle section of the upper shell. The hose is a flexible hollow tube, which can be freely extended and retracted, and can be made of plastic or other flexible materials, and one end of which is connected to the center hole of the air filter base, and the other end is connected to the center hole of the humidifying plate.

[0015] The humidification plate is a wheel-shaped structure with a hole in the center, the diameter of which is equal to the outer diameter of the hose; the bottom surface of the humidification plate has dozens of parabolic radial flow-guiding grooves radiating outward along the center hole, the flow-guiding grooves extend outward and protrude from the outer edge of the humidification plate, and the outer diameter of the formed outer circle is larger than the diameter of the humidification plate. The humidification rate adjustment knob is installed on the bottom surface of the humidification plate, and the humidification rate adjustment knob is screwed on the outer surface of the tower-shaped cylinder in the center of the humidification water surface plate; the humidification water surface plate and the float are bonded to form a closed float; the buoyancy F of the closed float is equal to or slightly greater than the sum of the weight of the humidification plate, the humidification rate adjustment knob and the hose. The humidification float can be a component formed in one step, including the humidification rate adjustment knob, the humidification water surface plate and the float, and the component can be formed by injection molding or sintering of lightweight materials; there can be a hole in the center of the humidification float, and the inner wall of the hole can have longitudinal grooves formed by several wrinkles, which can produce a siphon effect.

[0016] Instruction Manual

[0017] Legend:

[0018] 1- Protective cover;

[0019] 2- air conditioning ring; 21- longitudinal protrusions; 22- openings;

[0020] 3-Overpressure protection valve;

[0021] 4-Mixed gas outlet plug;

[0022] 5- Air filter;

[0023] 6-gas filter base; 61-center hole; 62-parabolic protrusion; 63-annular groove;

[0024] 7-Hose;

[0025] 8-humidification plate; 81-center hole; 82-guiding groove;

[0026] 9-Humidification rate adjustment knob;

[0027] 10-wet water surface plate; 10A-tower-shaped steps;

[0028] 11-Float;

[0029] 12-lower housing; 12A-thread;

[0030] 13 upper shell; 13A- oxygen inlet; 13B- through hole; 13C- rectangular window; 13D- tubular protrusion;

[0031] 13E-thread; 13F-annular protrusion;

[0032] SP-Wetted water surface

[0033] 14-integrated structure of the float 11, the humidification water surface plate 10 and the humidification rate adjustment knob 9; 14A-longitudinal groove;

[0034] Figure 1 It is a schematic diagram of the overall structure of a gas mixing and humidifying device for oxygen therapy of the present invention;

[0035] Figure 2 It is a structural schematic diagram of an air conditioning loop of a gas mixing and humidifying device for oxygen therapy of the present invention;

[0036] Figure 3 It is a structural schematic diagram of an air filter base of a gas mixing and humidifying device for oxygen therapy of the present invention;

[0037] Figure 4 It is a structural schematic diagram of a humidifying plate of a gas mixing and humidifying device for oxygen therapy of the present invention;

[0038] Figure 5 It is a structural schematic diagram of an upper shell of a gas mixing and humidifying device for oxygen therapy of the present invention;

[0039] Figure 6 This is a schematic diagram of the structure of the lower shell of a gas mixing and humidifying device for oxygen therapy of the present invention;.

[0040] Figure 7It is a structural schematic diagram of a gas mixing humidification device for oxygen therapy according to the present invention after a humidification plate and a humidification float are combined;

[0041] Figure 8 It is a schematic diagram of the overall structure of a gas mixing and humidifying device for oxygen therapy of the present invention;

[0042] Fig. 9 It is a schematic structural diagram of a humidification plate and a humidification float combined in a second embodiment of a gas mixing and humidification device for oxygen therapy of the present invention;

[0043] Fig.10 It is a schematic diagram of the functions and action structure of the second embodiment of a gas mixing and humidifying device for oxygen therapy of the present invention during normal use. Specific embodiments

[0044] Figure 1 It is a schematic diagram of the overall structure of a gas mixing and humidifying device for oxygen therapy of the present invention; as can be seen from the figure, the device of the present invention is composed of: an oxygen inlet protective cover 1, an air adjustment ring 2, an oxygen overpressure protection valve plate 3, a mixed gas outlet cover plug 4, an air filter membrane 5, a mixed gas filter base 6, a hose 7, a humidification plate 8, a humidification rate adjustment knob 9, a humidification water surface plate 10, a humidification float 11, a lower shell 12, and an upper shell 13, which are assembled in sequence. The upper shell 13 and the lower shell 12 are connected by threads or adhesives to form a complete hollow shell of the humidification bottle; the oxygen protection plug 1 and the mixed gas cover plug 4 respectively block and protect the entrance and exit of the humidification bottle; the air conditioning ring 2 is staggered and adjusted according to the openings of its side wall and the windows of the middle side wall of the upper shell 13 to control the amount of air entering the humidification bottle and mixing with oxygen; when the openings 22 on the side wall of the air conditioning ring completely overlap with the windows 13C of the upper shell, the amount of air entering is the largest, the mixing ratio is the largest, and the proportion of air is greater than that of oxygen; if the openings on the side wall of the air conditioning ring are completely staggered with the windows of the upper shell, the amount of air entering is the smallest, the mixing ratio is the smallest, and the proportion of air is less than that of oxygen.

[0045] There is a hole in the center of the bottom surface of the filter base 6, and there are multiple grooves radiating from the center to the outside in a parabolic shape around the hole. The air filter membrane 5 is placed on the surface of the hole, and then installed in the upper shell 13. The mixed air and oxygen pass through the air filter membrane 5 together to filter out dust particles in the atmosphere. The two ends of the hose 7 are respectively plugged into the center hole of the filter base 6 and the center hole of the humidification plate 8; the filtered mixed gas is introduced into the outer radial guide groove 82 on the bottom surface of the center hole 81 of the humidification plate 8 by the hose 7, and the gas jet interacts with the water vapor on the water surface to arouse atomization to form a humidified mixed airflow, which rises from the gap around the humidification plate to the upper end of the humidification bottle and is sent into the human respiratory tract through the mixed gas outlet 13D and the oxygen inhalation tube.

[0046] Figure 2 Schematic diagram of the structure of an air conditioning loop of a gas mixing and humidifying device for oxygen therapy of the present invention; Figure 2 It can be seen that the air conditioning ring 2 is a tubular structure, and its inner diameter is equal to the outer diameter of the middle section of the upper shell; the side wall of the air conditioning ring has symmetrical openings 22, and the area of ​​the openings 22 is slightly smaller than the window area of ​​the middle section side wall of the upper shell 13; the outer end of the air conditioning ring may have several longitudinal protrusions 21 for easy hand-held rotation; the air conditioning ring 2 is sleeved on the outer surface of the middle section window 13C of the upper shell 13. By rotating the air conditioning ring 2, the size of the window area of ​​the middle section of the upper shell 13 can be adjusted.

[0047] Figure 3 The present invention is a schematic diagram of the structure of an air filter base of a gas mixing and humidifying device for oxygen therapy; the air filter base 6 is a disc-shaped structure with a hole 61 in the center, and the hole diameter is equal to the outer diameter of the hose 7 (combined with Figure 1 ); on the inner surface of the filter base 6, there are a plurality of parabolic protrusions 62 along the outer edge of the center hole extending radially outward to the peripheral wall of the base; on the inner side wall of the outer circle of the filter base, there is an annular groove 63.

[0048] Figure 4 The present invention is a schematic diagram of the structure of a humidification plate of a gas mixing humidification device for oxygen therapy; the humidification plate 8 is similar to a round wheel, and there is a hole 81 in the center, and the inner diameter of the hole is equal to the outer diameter of the hose 7 (combined with Figure 1 ); at the lower end surface of the humidifying plate 8, there are dozens of guide grooves 82 radiating outward along the middle hole, which extend to the edge of the humidifying plate to form a circle with an outer diameter greater than the diameter of the bottom surface of the humidifying plate 8.

[0049] Figure 5 The present invention is a schematic diagram of the cross-sectional structure of the upper shell of a gas mixing and humidifying device for oxygen therapy; as can be seen from the figure, the upper shell 13 is a circular cap-shaped hollow structure, made of a transparent plastic material, with a reduced diameter at its upper end and an opening as an oxygen inlet 13A; below the oxygen inlet, there are symmetrical through holes 13B with a hole diameter between 1.0 and 3.0 mm; a pair of rectangular windows 13C are opened on the side wall of the middle section of the upper shell 13, and the window area is 20 to 40% of the area of ​​the side wall of the section; a circular tubular protrusion 13D is provided on the outer peripheral side wall of the middle and lower sections of the upper shell 13, the inner hole diameter of which is equal to the inner diameter of the oxygen inlet 13A and is connected to the inner cavity of the upper shell 13; a thread 13E is provided on the inner wall of the lower edge of the upper shell 13, which can be screwed with the lower shell to form the external integral structure of the humidification bottle; an annular structure extending downward is provided on the inner wall of the middle section of the upper shell, and an annular protrusion 13F is provided on its outer side wall.

[0050] Figure 6It is a schematic structural diagram of the lower shell of a gas mixing and humidifying device for oxygen therapy of the present invention; as can be seen from the figure, the lower shell 12 is a hollow barrel structure, made of a transparent plastic material, and its upper end opening diameter 12A is equal to the lower end opening diameter of the upper shell 13; the upper end outer edge of the lower shell 12 has a thread 12A, and the pitch is equal to the pitch of the thread 13E on the inner wall of the lower edge of the upper shell 13; the two can be tightened and sealed with each other.

[0051] Figure 7 This is a schematic diagram of the structure of a humidifying plate and a humidifying float combined with a gas mixing humidifying device for oxygen therapy of the present invention; it can be seen from the figure (combined with Figure 1 , 4 ), the float 11 is a hollow shell, and the humidification water surface plate 10 is a circular plate-like structure, with a cylindrical rotating tower-shaped step 10A in the center, which can be rotated with the tower-shaped step in the inner cavity of the humidification rate adjustment button 9 to adjust the distance between the humidification water surface plate 10 and the humidification rate adjustment button 9. The humidification water surface plate 10 is embedded and sealed with the upper edge of the inner circle of the float 11, and the buoyancy F formed is equal to or slightly greater than the sum of the weight of the humidification rate adjustment button 9, the humidification plate 8 and the hose 7; the upper end of the humidification rate adjustment button 9 is fixedly installed with the humidification plate 8. By rotating the humidification rate adjustment button, the distance between the humidification plate 8 and the humidification water surface plate 10 can be adjusted or changed.

[0052] Figure 8 This is a schematic diagram of the overall structure of a gas mixing and humidifying device for oxygen therapy of the present invention; as can be seen from the figure (combined with Figure 1 , 2, 3, 4, 5, 7); the complete humidification bottle can be pre-filled with humidification liquid (the ingredients are configured according to clinical or disease needs) 100ml~300ml; the oxygen inlet 13A is sealed with an oxygen cap 1 inserted outside; the mixed gas outlet 13D is sealed with a mixed gas protection cap plug 4 inserted outside; the two side holes 13B in the upper section of the upper shell 13 are wrapped with oxygen overpressure protection valve plates 3 on the outside, which are sealed outside the side holes 13B; when the oxygen pressure is greater than a certain value, the overpressure protection valve plate can be tilted, and high-pressure oxygen can be discharged from the side hole 13B to protect the patient's respiratory mucosa from being harmed by high-pressure gas. The air conditioning ring 2 is mounted on the outside of the middle section of the upper shell 13 and covers the window 13C of the side wall. The adjusting ring can be rotated to make the opening 22 of the adjusting ring side wall completely overlap with the window 13C of the upper shell side wall (at this time, the window area is the largest, the amount of air entering is large, and the air and oxygen mixing ratio is the largest) or partially cover or completely cover to adjust the amount of air entering the window of the upper shell, thereby adjusting the mixing ratio of oxygen and air. The adjustment amount can be indicated by the scale and value printed on the outside of the air conditioning ring. As can be seen from the figure, the outer edge of the annular structure extending downward from the middle inner wall of the upper shell 13 has an annular protrusion 13F which can be embedded with the annular groove 63 on the inner edge of the air filter base 6 to form a complete hollow structure of the air filter, in which an air filter membrane 5 is installed; the mixed oxygen and air (mixed gas) filter out dust particles in the air through the filter membrane 5; one end of the hose 7 is plugged and fixed with the center hole 61 of the air filter base 6, and the other end is plugged and fixed with the center hole 81 of the humidification plate 8; the mixed gas after filtering out particles is introduced into the center hole 81 of the humidification plate 8 through the hose 7, and between the guide groove 82 and the humidification water surface plate 10 that is radially rotated outward by rotation. Since the speed of the high-speed swirl and jet of the mixed gas at the center hole is greater than the speed of the periphery, the high-speed, high-pressure gas jet excites the humidification liquid between the humidification water surface plates to form an atomization effect at the outer edge of the humidification plate 8, so that the mixed gas is fully humidified. By adjusting the distance between the humidifying plate 8 and the water surface plate 10, the degree of atomization and humidification (humidification rate) of the mixed gas and the humidifying liquid can be adjusted. As the humidifying liquid in the humidifying device evaporates, the liquid level drops, the float 11 also drops, and the humidifying water surface plate 10 of the float 11 also changes accordingly, so that the relative distance between the humidifying plate 8 and the humidifying water surface plate 10 can always be kept consistent, and the humidification rate can be kept stable.

[0053] Fig. 9It is a schematic structural diagram of the combination of a humidifying plate and a humidifying float in the second embodiment of a gas mixing humidifying device for oxygen therapy of the present invention; in the second embodiment of the present invention, the humidifying float 14 can be a structural component 14 formed in one step, including a humidification rate adjustment knob 9, a humidifying water surface plate 10 and a humidifying float 11, and can be injection molded or sintered by a lightweight material; there is a hole in the center of the humidifying float 14, and the inner wall of the hole can have a fine longitudinal groove gap 14A formed by several wrinkles, which can form a siphon phenomenon; the upper end of the humidifying float 14 is screwed and fixed to the humidifying plate 8, and the distance between the humidifying plate 8 and the water surface plate of the humidifying float 14 can be adjusted by rotation, thereby changing the humidification rate.

[0054] Fig.10 This is a schematic diagram of the function of the second embodiment of the gas mixing and humidifying device for oxygen therapy in normal use of the present invention; pure dry oxygen is regulated by the pressure reducing valve and the flow meter, and then connected to the oxygen inlet 13A of the humidifying bottle of the present invention through the pipeline, and the overpressure protection valve plate 3 covers and seals the side hole 13B in the middle section of the upper shell; once an operation error occurs, when the high-pressure oxygen enters the oxygen inhalation pipeline without being reduced in pressure, the overpressure oxygen will break the protection valve plate 3 and overflow from the side hole, thereby releasing the oxygen pressure and preventing it from impacting and damaging the human respiratory mucosa. The air conditioning ring 2 and the middle section of the upper shell are set on the outer surface, and the degree of overlap between the side wall opening of the rotating adjustment ring and the side wall opening of the middle section of the upper shell changes the mixing ratio of oxygen and air. The mixed gas is filtered by the air filter membrane in the filter to remove dust particles in the air. The clean mixed gas enters the middle hole on the bottom surface of the humidifying plate 8 through the hose 7, and then diffuses to the periphery through the spiral groove on the bottom surface of the humidifying plate, and passes through the humidifying water surface SP formed on the surface of the float. Since the gap at the entrance of the spiral groove of the humidifying plate is narrow, the air flow speed there is very high. When entering the middle section and outlet section of the humidifying plate, the speed slows down instantly due to the widening of the groove, and the volume expands. The water vapor between the high-speed airflow and the water surface is atomized and humidified due to the jet effect, and evaporates and rises to the upper space of the humidifying bottle, is discharged from the outlet pipe, and enters the human respiratory tract through the oxygen inhalation tube.

[0055] The humidifying plate 8 and the float 14 automatically rise and fall with the rise and fall of the humidifying liquid level, and due to the siphon phenomenon caused by the wrinkle gap in the center hole of the float, the humidifying liquid at the bottom of the humidifying bottle (below the float) can be attracted to the humidifying plane of the float and agitated by the high-speed mixed airflow to form water vapor atomization.

[0056] Due to the structure of the air-conditioning ring and the opening of the upper shell side wall that are rotatably adjusted to each other adopted by the present invention, the size of the window area of ​​the upper shell side wall can be changed by rotating the air-conditioning ring, and the amount of air entering the upper shell can be changed, thereby controlling the mixing ratio of oxygen and air, thereby avoiding possible harm to patients caused by long-term inhalation of pure oxygen, such as oxygen poisoning.

[0057] Since the present invention adopts a structure in which the jet gas composed of the humidification float and the humidification plate agitates the water vapor atomization and humidification on the surface of the humidification liquid, and by adjusting the distance between the humidification plate and the humidification water surface plate, the present invention can control the humidification rate to adapt to the adjustment requirements of different humidification rates in different seasons and different patients' conditions, and avoid the humidification transition or insufficient humidification caused by the single humidification rate of the traditional humidification bottle.

[0058] Since the present invention adopts the structure that the airflow passes through the humidification water surface plate by jet technology, and the float can automatically track the rise and fall of the liquid level, and the humidification rate will not change due to the tilt of the humidification bottle, the present invention also eliminates the noise generated by the air passing through the water in the ordinary humidification bottle.

[0059] In summary, the present invention has the following new functions and effects:

[0060] 1. Eliminates the sound of air passing through water; no noise, does not affect the patient's rest and others' sleep;

[0061] 2. The humidification float can automatically rise and fall according to the humidification liquid level, changing the tilt angle of the humidification bottle; it can also ensure the stability of the humidification rate;

[0062] 3. The humidification rate can be adjusted to meet the treatment needs of different patients in different seasons.

[0063] 4. The mixing ratio of air and oxygen can be changed to meet the needs of different seasons and different diseases and avoid the occurrence of oxygen poisoning.

Claims

1. A gas mixing and humidifying device for oxygen therapy, comprising an oxygen inlet cover (1), an air regulating ring (2), an oxygen overpressure protection valve plate (3), a mixed gas outlet cover plug (4), an air filter membrane (5), an air filter base (6), a hose (7), a humidifying plate (8), a humidification rate adjustment knob (9), a humidifying water surface plate (10), a humidifying float (11), a lower shell (12), and an upper shell (13); wherein: The humidifying device can be pre-filled with 100ml to 300ml of humidifying liquid; an oxygen inlet cover (1) is inserted and sealed outside the oxygen inlet (13A); a mixed gas outlet cover plug (4) is inserted and sealed outside the mixed gas outlet (13D); an oxygen overpressure protection valve sheet (3) is wrapped around the outer surface of two side holes (13B) of the upper section of the upper shell (13) to seal the side holes (13B); an air regulating ring (2) is sleeved on the outer side of the middle section of the upper shell (13) to cover the window (13C) on the side wall of the middle section of the upper shell; the air regulating ring (2) is rotated to change the overlap between the opening (22) on the side wall of the air regulating ring and the window (13C) on the side wall of the middle section of the upper shell, so as to adjust the amount of air entering the upper shell and control the mixing ratio of oxygen and air. The adjustment amount can be indicated by the scale and numerical value printed on the outer side of the air regulating ring. As shown in the figure, an annular protrusion (13F) is provided on the outer wall of the annular structure extending downward from the inner wall of the middle section of the upper shell (13), which can be engaged and bonded with the annular groove (63) on the inner edge of the air filter base (6) to form a complete hollow structure of the air filter, in which the air filter membrane (5) is placed; one end of the hose (7) is plugged and fixed to the central hole (61) of the air filter base (6), and the other end is plugged and fixed to the central hole of the humidifying plate; the mixed gas after the particles are filtered out is introduced into the central hole of the humidifying plate (8) through the hose (7) and is ejected outward through the rotating radial guide groove (82), because the speed of the gas swirl and jet at the central hole (81) on the bottom surface of the humidifying plate (8) is greater than the speed of the surrounding area; the jet formed by the high-speed and high-pressure gas stirs up water vapor between the humidifying water surface plates (10) to form atomization and humidification effects; The humidification rate is changed by adjusting the distance between the humidification plate (8) and the humidification water surface plate (10); as the humidification liquid in the humidification device evaporates, the liquid level drops, the humidification float (11) also drops, and the humidification float (11) and the humidification water surface plate (10) also change accordingly, so that the relative distance between the humidification plate (8) and the humidification water surface plate (10) can always be kept consistent, thereby maintaining a stable humidification rate.

2. A gas mixing and humidifying device for oxygen therapy according to claim 1, characterized in that: The middle section side wall of the upper shell (13) has two windows (13C), and the area of ​​each window (13C) is 20-40% of the area of ​​the middle section side wall; the inner wall of the middle section of the upper shell (13) has an annular structure extending downward, and the outer wall of the annular structure has an annular protrusion (13F), and the diameter of the protrusion is slightly larger than the diameter of the outer inner wall of the air filter base (6).

3. A gas mixing and humidifying device for oxygen therapy according to claim 1, characterized in that: The air filter base (6) is a disc-shaped structure having a center hole (61) at the center thereof, and a plurality of parabolic protrusions (62) radiating outward along the center hole (61) on the inner surface thereof to support the air filter membrane (5); an annular groove (63) is provided on the circumferential inner wall of the disc-shaped structure of the air filter base (6), which can be interlocked with the annular protrusion (13F) on the outer wall of the annular structure extending downward from the inner wall of the middle section of the upper shell (13).

4. A gas mixing and humidifying device for oxygen therapy according to claim 1, characterized in that: The hose (7) is a flexible hollow tube that can be freely extended and retracted and is made of plastic or other flexible materials. One end of the hose is connected to the central hole (61) of the air filter base (6), and the other end is connected to the central hole (81) of the humidifying plate (8).

5. The gas mixing and humidifying device for oxygen therapy according to claim 1, characterized in that: The humidifying plate (8) is a wheel-shaped structure, with a center hole (81) at its center, and the inner diameter of the hole is equal to the outer diameter of the hose (7); the bottom surface of the humidifying plate (8) has dozens of rotating radial guide grooves (82) radiating outward from the center hole (81), and the guide grooves (82) extend outward and protrude from the outer edge of the humidifying plate (8), and the outer circumference diameter formed is larger than the diameter of the humidifying plate (8).

6. A gas mixing and humidifying device for oxygen therapy according to claim 1, characterized in that: The humidification rate adjusting knob (9) is installed on the bottom surface of the humidification plate (8), and the humidification rate adjusting knob (9) is screwed on the outer surface of the tower-shaped cylinder at the center of the humidification water surface plate (10); the humidification water surface plate (10) and the humidification floating ball (11) are bonded to form a closed floating ball; the buoyancy F of the closed floating ball is equal to or slightly greater than the sum of the weight of the humidification plate (8), the humidification rate adjusting knob (9) and the hose (7).

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