CN111150916A - A high-flow oxygen therapy heating and humidifying device - Google Patents
A high-flow oxygen therapy heating and humidifying device Download PDFInfo
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- CN111150916A CN111150916A CN202010100611.9A CN202010100611A CN111150916A CN 111150916 A CN111150916 A CN 111150916A CN 202010100611 A CN202010100611 A CN 202010100611A CN 111150916 A CN111150916 A CN 111150916A
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 65
- 238000002640 oxygen therapy Methods 0.000 title claims abstract description 25
- 239000001301 oxygen Substances 0.000 claims abstract description 164
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 164
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 111
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 103
- 238000005485 electric heating Methods 0.000 claims abstract description 54
- 239000000463 material Substances 0.000 claims abstract description 19
- 238000010521 absorption reaction Methods 0.000 claims abstract description 17
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- 230000003000 nontoxic effect Effects 0.000 claims description 3
- 229920000515 polycarbonate Polymers 0.000 claims description 3
- 239000004417 polycarbonate Substances 0.000 claims description 3
- 229920000379 polypropylene carbonate Polymers 0.000 claims description 3
- 229920001296 polysiloxane Polymers 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
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- 206010021143 Hypoxia Diseases 0.000 abstract description 7
- 206010035664 Pneumonia Diseases 0.000 abstract description 7
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- 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. ventilators; Tracheal tubes
- A61M16/10—Preparation of respiratory gases or vapours
- A61M16/1075—Preparation of respiratory gases or vapours by influencing the temperature
- A61M16/1095—Preparation of respiratory gases or vapours by influencing the temperature in the connecting tubes
-
- 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. ventilators; Tracheal tubes
- A61M16/08—Bellows; Connecting tubes ; Water traps; Patient circuits
- A61M16/0808—Condensation traps
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- 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. ventilators; Tracheal tubes
- A61M16/10—Preparation of respiratory gases or vapours
- A61M16/12—Preparation of respiratory gases or vapours by mixing different gases
- A61M16/122—Preparation of respiratory gases or vapours by mixing different gases with dilution
- A61M16/125—Diluting primary gas with ambient air
- A61M16/127—Diluting primary gas with ambient air by Venturi effect, i.e. entrainment mixers
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- 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. ventilators; Tracheal tubes
- A61M16/10—Preparation of respiratory gases or vapours
- A61M16/14—Preparation of respiratory gases or vapours by mixing different fluids, one of them being in a liquid phase
- A61M16/16—Devices to humidify the respiration air
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- 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
- A61M2205/00—General characteristics of the apparatus
- A61M2205/18—General characteristics of the apparatus with alarm
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- 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
- A61M2205/00—General characteristics of the apparatus
- A61M2205/33—Controlling, regulating or measuring
- A61M2205/3331—Pressure; Flow
- A61M2205/3334—Measuring or controlling the flow rate
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- 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
- A61M2205/00—General characteristics of the apparatus
- A61M2205/33—Controlling, regulating or measuring
- A61M2205/3368—Temperature
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- 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
- A61M2205/00—General characteristics of the apparatus
- A61M2205/36—General characteristics of the apparatus related to heating or cooling
- A61M2205/3653—General characteristics of the apparatus related to heating or cooling by Joule effect, i.e. electric resistance
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- Engineering & Computer Science (AREA)
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Abstract
The utility model provides a high flow oxygen therapy humidification device that heats, belongs to the medical equipment that supplementary breathing oxygen was treated, includes empty oxygen mixing arrangement, empty oxygen humidification device that heats, screwed pipe nasal cannula getter device and oxygen flow control and temperature monitoring adjusting device, its characterized in that: the air oxygen heating and humidifying device is in a vertical cylindrical shape, a vertical plate-shaped structure electric heating device with a thin water absorption material covered on the surface is installed in the air oxygen heating and humidifying device, an air inlet is formed in the side face close to the bottom end and connected with an air oxygen mixing device, an air outlet is formed in the upper end of the air oxygen heating and humidifying device and connected with a threaded pipe nose pipe air suction device, and a water inlet pipe is arranged and connected with a water dripping device capable of adjusting. The vertical plate-shaped electric heating device adopts a PTC ceramic constant-temperature electric heating plate, has simple structure, is safe and effective, and is convenient for popularization and application in basic medical units. The traditional Chinese medicine composition is not only suitable for patients with moderate and severe new coronary pneumonia and hypoxic respiratory failure to use and promote rehabilitation, but also can be used for the adjuvant therapy of other various respiratory dysfunction diseases such as various COPD and partial severe OSA cases.
Description
Technical Field
The present invention belongs to a medical device, particularly to an oxygen therapy device for assisting respiration.
Background
Transnasal high flow humidified oxygen therapy (HFNC) has become widely used in the clinic in recent years as a new respiratory support technology. The treatment equipment mainly comprises an air-oxygen mixing device, a humidification treatment instrument, a high-flow nasal plug and a connecting breathing pipeline, and has the main functions of providing a patient with relatively constant oxygen inhalation concentration (21-100%), temperature (31-37 ℃) and humidity high-flow (8-80L/min) air-oxygen mixed gas, carrying out oxygen therapy by inhaling through the nasal plug, and having good comfort. The HFNC can improve the functions of ventilation and partial ventilation of a patient by inhaling high-flow gas to generate a certain level of positive end-expiratory pressure, flushing physiological dead spaces of an upper respiratory tract, maintaining the functions of a mucociliary clearance system by constant temperature and humidity gas, reducing the upper airway resistance and the respiratory function of the patient and the like, has a positive treatment effect on a patient with simple hypoxic respiratory failure (type I respiratory failure), and also has a certain treatment effect on a patient with partial mild hypoxia combined with hypercapnia (type II respiratory failure). It should be noted that the limitations of HFNC are also well recognized. The indications and contraindications are defined, and the clinical application is regulated (refer to the common general knowledge of the clinical application experts of the high-flow humidification oxygen therapy through the nose for adults who are drafted by the respiratory disease division respiratory critical medical science group of the Chinese medical institute and the respiratory physician division critical medical working committee of the national medical institute). HFNC is a novel breathing support mode, the maximum gas flow can be adjusted to 60-80L/min, and the inhaled oxygen concentration (FiO2) is 0.21-1.0. HFNC can reduce tracheal intubation rate and mortality in patients with hypoxic respiratory failure compared to conventional oxygen therapy. Thus, HFNC therapy may be selected when the conventional oxygen therapy device is unable to correct hypoxemia, intolerant of noninvasive positive pressure ventilation, or the following: mild and moderate hypoxemia, no emergency tracheal intubation indication, and relatively stable vital signs. The method can be applied carefully to patients with mild ventilation dysfunction, but needs to be prepared for replacing non-invasive or invasive positive pressure ventilation at any time. Besides the indications, the HFNC can also be used for postoperative rehabilitation treatment of nasopharynx, larynx and upper airway operations and various general anesthesia surgical major operations. In particular, in the current epidemic situation of fighting against the new type of coronavirus pneumonia, HFNC is used for treating moderate and severe new coronary pneumonia, and plays a good role in protecting and maintaining respiratory function, preventing disease deterioration and reducing mortality.
The existing high-flow humidified oxygen therapy equipment has certain defects: 1, the structure is complicated, the manufacturing cost is high, for example, as shown in the Chinese utility model patents CN 207605208, CN 209475338 and CN 209204373, the international patent application PCT/US 2006/047640 and the Chinese invention patent application CN101365509A, the production of the product in a short time is difficult to meet the current demand of resisting the new coronary pneumonia epidemic situation (the product is known to be imported from the beginning of 2 months in 2020 and sold in the same kind of domestic equipment). 2 the price of the consumable and the host is expensive, the screwed pipe with the constant temperature electric heating wire, the nasal tube and the mask are all disposable, the host needs to be sterilized and reused, and the host is difficult to popularize and use in a large number. 3, the use and operation are complex, the efficiency is low (the electric heating device generally adopts a heating bottom plate mode, the conduction time is long, the preheating time is more than 10 minutes), and the oxygen consumption is large.
In order to solve the defects of the high-flow humidification oxygen therapy equipment, the invention adopts the following improved design to achieve the purposes of reducing the cost, simplifying the operation and improving the efficiency.
Disclosure of Invention
The utility model provides a high flow oxygen is treated and is heated humidification device, includes empty oxygen mixing arrangement, empty oxygen humidification device that heats, screwed pipe nasal tube getter device and oxygen flow control and temperature monitoring adjusting device, its characterized in that: the air oxygen heating and humidifying device is in a vertical cylindrical shape, and is provided with a vertical plate-shaped structure electric heating device with a thin layer of water absorption material covered on the surface; the side surface of the air oxygen heating and humidifying device near the bottom end is provided with an air inlet which is connected with an air oxygen mixing device; the upper end of the air oxygen heating and humidifying device is provided with an air outlet connected with a screwed pipe nasal tube air suction device, and is also provided with a water inlet pipe connected with a water dripping device capable of adjusting the flow. The vertical plate-shaped structure electric heating device adopts a PTC ceramic constant-temperature electric heating plate, the input voltage is 12-220V, the power is 80-200W, the rated constant temperature is 100-120 ℃, the shell is made of metal material with good heat conduction, silicone heat-conducting glue is used for sealing and waterproof treatment, and the surface of the metal shell is covered with a thin layer of water absorbing material. The vertical plate-shaped structure electric heating device is of a single plate-shaped structure or a multi-layer plate-shaped structure, the height of the single plate-shaped structure electric heating device is 150-250 mm, the width of the single plate-shaped structure electric heating device is 15-25 mm, the thickness of the single plate-shaped structure electric heating device is 3-8 mm, the height of each layer of the multi-layer plate-shaped structure electric heating device is 2-5 layers, the width of each layer is 20-80 mm, the thickness of each layer of the multi-layer plate-shaped structure electric heating device is 3-5 mm, the interval of each layer of the multi-layer plate-shaped structure. The upper end of the air-oxygen heating and humidifying device is provided with a sealing cover, the sealing cover and the shell are made of non-toxic heat-resistant insulating materials, the sealing cover is preferably formed by injection molding of polypropylene or polycarbonate, a water inlet pipe is arranged on the sealing cover, a water outlet of the water inlet pipe is in a needle tube shape and is positioned above an electric heating device, a water inlet of the water inlet pipe is connected with a container filled with injection water or distilled water through a medical infusion tube, a regulator for controlling the speed of liquid drops is arranged on the medical infusion tube, an air outlet is arranged on the sealing cover and is connected with a screwed tube nasal tube. The water inlet pipe of the sealing cover of the air oxygen heating and humidifying device can also be made into a straight pipe shape, the distance between the tail end water outlet and the bottom of the air oxygen heating and humidifying device is adjustable by 20-50 mm, a floating ball-shaped water stop valve is arranged, the water inlet of the water inlet pipe is connected with a container filled with injection water or distilled water through a medical infusion pipe, and a regulator for controlling the speed of liquid drops is arranged on the medical infusion pipe. Be equipped with the connecting pipe on the mixed air inlet of empty oxygen humidification device that heats, the connecting pipe is long for 40 to 60mm, it is middle narrow that its section is, the two inclined plane structures of mouthful and flaring outside in both ends, interior mouthful and flaring inside diameter are 15 to 20mm, middle narrow part internal diameter is 6 to 12mm, the nearly flaring department of connecting pipe is equipped with the side opening, and be equipped with the rotatory lid of taking same side opening, adjust two adjustable side opening coincidence of rotatory lid or stagger, the aperture of side opening is 8 to 16mm on connecting pipe and the rotatory lid. The center of the rotary cover is fixed with an oxygen inlet pipe, the inner diameter is 3 to 6mm, the inner diameter of an oxygen nozzle at the tail end is 1.5 to 3mm, and the oxygen inlet pipe is positioned in the middle narrow part of the connecting pipe. The oxygen intake pipe is connected with a medical oxygen gas source through a connecting pipe, the medical oxygen gas source is connected with an oxygen flow meter and is simultaneously connected with a gas valve with a breathing synchronous sensor and a controller, and the breathing synchronous sensor is a micro pressure sensor or an airflow sensor and is positioned on a nasal tube of a screwed tube nasal tube air suction device. The metal shell with good heat conduction of the vertical plate-shaped structure electric heating device is made of aluminum, copper or stainless steel materials, the thin layer water absorption material covered on the surface of the metal shell is made of cotton yarn or water absorption fibers, and the lower end of the water absorption material is tightly attached to the bottom of the inner side of the air-oxygen heating and humidifying device. The air-oxygen heating and humidifying device is installed in a case, a fixing device capable of being fixed on a medical infusion support is arranged behind the case, and a turbo fan and an air-oxygen mixing device are arranged in the case and are connected with an air inlet on the side surface of the air-oxygen heating and humidifying device close to the bottom end through a pipeline. The air-oxygen heating and humidifying device is characterized in that a monitoring device is arranged in the case and connected with a temperature sensor, an oxygen concentration sensor and an air-oxygen mixture flow sensor, the temperature sensor is arranged at an outlet of the air-oxygen heating and humidifying device, the oxygen concentration sensor and the air-oxygen mixture flow sensor are arranged at an inlet of the air-oxygen heating and humidifying device, and a panel of the case is provided with a temperature, oxygen concentration and flow display screen and an adjusting button.
The invention has the beneficial effects that: 1, the equipment structure is simplified, and the manufacturing cost is reduced. The air oxygen heating and humidifying device provided with the vertical plate-shaped structure electric heating device can be used by connecting a dripping device with adjustable flow, an air oxygen mixing device and a screwed pipe nasal tube air suction device, and has the function of high-flow oxygen therapy heating and humidifying. 2 reduce consumptive material and host computer cost, the optional constant temperature heater strip that does not take of screwed pipe nasal tube, because of can placing nearly bedside and lower position with empty oxygen humidification device that heats, the screwed pipe nasal tube is walked upwards, and a small amount of beads can be dripped back into empty oxygen humidification device that heats, and the complete machine cost is lower, but disposable also partly disinfection used repeatedly, the mass production of being convenient for is promoted and is popularized. 3, the use and operation are simple and convenient, the efficiency is high, the electric heating device adopts a PTC ceramic constant temperature electric heating vertical plate-shaped structure, the rated constant temperature is 100-120 ℃, the safety is high, the equipment cannot be damaged due to overhigh temperature even if the electric heating device is continuously electrified without water, the resistance is rapidly increased when the rated temperature is reached, and the power is reduced. The vertical plate-shaped electric heating device is adopted, water is uniformly dripped from top to bottom, steam is rapidly generated by heating, a thin layer of water absorption material is covered on the surface of the vertical plate-shaped electric heating device to ensure that water drops are uniformly distributed, a small amount of accumulated water at the bottom of the vertical plate-shaped electric heating device can be enabled to be siphoned by the capillary tube of the water absorption material, and heating vaporization is promoted. The air-oxygen mixed gas enters from the side surface of the air-oxygen heating and humidifying device close to the bottom and rises along the periphery of the vertical plate-shaped structure electric heating device, so that the air-oxygen mixed gas can be heated and humidified quickly, the efficiency is improved, and the space is reduced. 4, an air valve with a respiration synchronous sensor and a controller is additionally arranged on the oxygen inlet pipe, when a patient inhales, the oxygen is synchronously opened, the oxygen is sprayed into the air-oxygen mixing device, when the patient exhales, the oxygen is closed, and the spraying of the oxygen is stopped, so that the oxygen consumption can be reduced. The air-oxygen mixing device is designed by adopting the Venturi effect principle, the existing products are matched for use, the expensive low-noise turbine fan and the adjusting device can be omitted, and the cost is further reduced.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present invention.
Fig. 2 is a schematic view of another embodiment of the present invention.
Fig. 3 is a schematic view of another embodiment of the present invention.
FIG. 4 is a schematic view of an air-oxygen mixing device according to the present invention.
FIG. 5 is a top view of the embodiment of FIG. 1 taken along line AA.
FIG. 6 is a schematic diagram of a connection method according to the present invention.
FIG. 7 is a schematic diagram of another embodiment of the present invention and the connection method.
Detailed Description
The following detailed description of embodiments of the invention will be made with reference to the accompanying drawings.
Referring to fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6 and fig. 7, a high flow oxygen therapy heating and humidifying device includes an air-oxygen mixing device 23, an air-oxygen heating and humidifying device 16, a threaded pipe 20, a nasal cannula 19 air suction device and an oxygen flow regulating and temperature monitoring and regulating device, and is characterized in that: the air oxygen heating and humidifying device 16 is in a vertical cylindrical shape, and is provided with a vertical plate-shaped structure electric heating device 4 with a thin layer water absorption material 5 covered on the surface; the air inlet 8 is arranged on the side surface of the air-oxygen heating and humidifying device 16 near the bottom end and is connected with an air-oxygen mixing device 23; the upper end of the air oxygen heating and humidifying device 16 is provided with an air outlet 3 connected with a screwed pipe 20 with a constant temperature heating wire and a nasal tube 19 air suction device, and is also provided with a water inlet pipe 2 connected with a water dropping device with adjustable flow. The vertical plate-shaped structure electric heating device 4 adopts a PTC ceramic constant temperature electric heating plate, the input voltage is 12-220V, the power is 80-200W, the rated constant temperature (Curie temperature) is 100-120 ℃, the shell is made of metal material with good heat conduction, silicone heat conduction glue is used for sealing and waterproofing treatment, and the surface of the metal shell is covered with a thin layer of water absorption material 5. The vertical plate-shaped structure electric heating device 4 is of a single plate-shaped structure or a multi-layer plate-shaped structure, the height of the single plate-shaped structure electric heating device is 150-250 mm (preferably 200mm), the width is 15-25 mm, the thickness is 3-8 mm, the number of the multi-layer plate-shaped structure electric heating devices is 2-5, the height of each layer is 50-100 mm, the width is 20-80 mm, the thickness is 3-5 mm, and the interval is 3-5 mm, the plate-shaped structure electric heating device 4 is fixed at the bottom of the inner side of the vertical cylindrical air oxygen heating and humidifying device 16 (can also be fixed on a sealing cover at the top as shown in figure 2), is connected with an external power supply. The upper end of the air oxygen heating and humidifying device 16 is provided with a sealing cover 1, the sealing cover 1 and the shell 7 are made of nontoxic heat-resistant insulating materials, preferably polypropylene or polycarbonate injection molding, the sealing cover 1 is provided with a water inlet pipe 2, the water outlet of the water inlet pipe 2 is in a needle tube shape and is positioned above the plate-shaped structure electric heating device 4, the water inlet of the water inlet pipe 2 is connected with a container 13 filled with injection water or distilled water through a medical infusion tube 14, the medical infusion tube 14 is provided with a regulator 15 for controlling the speed of liquid drops, the sealing cover 1 is provided with an air outlet 3 which is connected with a screwed pipe 20 and a nasal tube 19 or a nasal mask and other air suction devices (the air outlet 3 can also be designed on the upper part. The threaded pipe 20 is provided with a constant temperature heating wire, which is a method commonly adopted by most threaded pipes of noninvasive ventilators and can prevent the air-oxygen mixture flow after being heated and humidified from condensing water drops on the pipe wall.
In another embodiment, the water inlet pipe 2 of the sealing cover 1 of the air oxygen heating and humidifying device 16 is designed to be a vertical pipe, the water outlet at the tail end of the water inlet pipe is 20-50 mm away from the bottom of the air oxygen heating and humidifying device 16 and can be adjusted, a floating ball-shaped water stop valve 6 is arranged, the water inlet of the water inlet pipe 2 is connected with a container 13 filled with injection water or distilled water through a medical infusion tube 14, and a regulator 15 for controlling the liquid drop speed is arranged on the medical infusion tube 14. The design can automatically maintain the water level inside the air oxygen heating and humidifying device 16 at a constant level, and the water level can be adjusted to be 20-50 mm in height according to needs. Although the water level is not higher than that of the electric heating device 4 with the multi-layer plate-shaped structure, water can be absorbed to the upper part of the electric heating device 4 with the plate-shaped structure through the siphoning effect of the water absorbing material on the surface of the electric heating device, and steam is generated through heating. Its advantages are constant temp and moisture and high efficiency.
Be equipped with the connecting pipe on the mixed air inlet 8 of empty oxygen humidification device 16 that heats, the connecting pipe is long for 40 to 60mm, its section is middle narrow, the mouth reaches the expanded double inclined plane structure in both ends, interior mouth and outer mouthful internal diameter are 15 to 20mm, middle narrow part internal diameter is 6 to 12mm, the nearly outer mouthful department of connecting pipe is equipped with side opening 9, and be equipped with the rotatory lid 10 of taking side opening 9, adjust two adjustable side opening 9 coincidences of rotatory lid 10 or stagger, the aperture of side opening 9 is 8 to 16mm on connecting pipe and the rotatory lid 10. The center of the rotary cover 10 is fixed with an oxygen inlet pipe 11, the inner diameter is 3 to 6mm, the inner diameter of the oxygen nozzle at the tail end is 1.5 to 3mm, and the oxygen inlet pipe is positioned at the middle narrow part of the connecting pipe. The air-oxygen mixing device 23 is designed by adopting the venturi effect principle, when oxygen is sprayed out from a nozzle at a high speed, negative pressure is generated, peripheral air is driven to mix and flow forwards, the oxygen flow, the spraying speed and the size of a side hole are adjusted, and the mixing ratio of the air and the oxygen can be adjusted, namely the oxygen concentration is adjusted. The oxygen inlet pipe 11 is connected with a medical oxygen source through an oxygen connecting pipe 21, the medical oxygen source is connected with an oxygen flow meter 17 and an adjusting knob 18, and simultaneously can be connected with an air valve 32 with a breathing synchronous sensor 33 and a controller, and the breathing synchronous sensor 33 is a micro pressure sensor or an airflow sensor and is positioned on a nasal tube 19 of an air suction device of a threaded pipe 20. The metal shell with good heat conduction of the vertical plate-shaped structure electric heating device 4 is made of aluminum, copper or stainless steel materials, the thin layer water absorption material 5 covered on the surface of the metal shell is made of cotton yarn or water absorption fibers, and the lower end of the water absorption material 5 can be tightly attached to the bottom of the inner side of the air-oxygen heating and humidifying device 16.
In another embodiment, the air-oxygen heating and humidifying device 16 is installed in a case, a fixing device 29 which can be fixed on a medical infusion support is arranged at the back of the case, and a turbo fan and an air-oxygen mixing device 23 are arranged in the case and are connected with the air inlet 8 on the side surface of the air-oxygen heating and humidifying device 16 near the bottom end through a pipeline. The case is provided with a monitoring device 27 and is connected with a temperature sensor and display 22, an oxygen concentration sensor 26 and an air-oxygen mixture flow sensor 25, the sensing elements of the temperature sensor and the display 22 can be arranged at the outlet of the air-oxygen heating and humidifying device 16 or the connection part of the threaded pipe 20 and the nose pipe 19, the oxygen concentration sensor 26 is arranged at the air inlet 8 of the air-oxygen heating and humidifying device 16, and the panel of the case is provided with a temperature, oxygen concentration and flow display screen 24 and an adjusting button. The side or the back of the case is provided with a power interface 28. The embodiment with more perfect configuration can be additionally provided with an intelligent monitoring chip, a monitoring alarm device and an automatic adjusting device.
When in use, the air-oxygen heating and humidifying device 16 can be fixed on a movable infusion support and placed beside a sickbed, and can be leveled with the sickbed. A container 13 (bottled with 500ml of water for injection or distilled water, or soft-packaged with 1000-2000 ml of water for injection) is hung on an infusion support, a medical infusion tube 14 is connected for exhausting air, a regulator 15 for controlling the speed of liquid drops is closed, and the water outlet of the infusion tube is connected with a water inlet tube 2 at the upper end of an air-oxygen heating and humidifying device 16. The oxygen connection tube 21 is connected to an oxygen flow meter 17 on the medical oxygen source. The air outlet 3 of the air oxygen heating and humidifying device 16 is connected with a threaded pipe 20 and a nose pipe 19. The power is switched on, the infusion regulator 15 is loosened, the dropping speed of the water for injection (about 30 drops per minute) is adjusted, the adjusting knob 18 on the oxygen flowmeter 17 is adjusted (firstly adjusted to 10 liters per minute), and the outlet of the threaded pipe 20 and the outlet of the nasal tube 19 are observed to gradually flow out of the air-oxygen mixed gas with steam. The temperature value on the temperature sensor of the threaded pipe 20 and the display 22 is observed, the aperture size of the side hole 9 on the rotary cover 10 of the air-oxygen mixing device 23 is adjusted, so that the size of the air inlet flow on the air-oxygen mixing device 23 is adjusted, and the temperature and the oxygen concentration of the air-oxygen mixed gas can be adjusted. The temperature is preferably adjusted to be between 31 and 37 ℃ Leoni (31-37 ℃), the oxygen flow is preferably adjusted to be between 15 and 30 liters per minute, and if an oxygen concentration sensor and an air flow sensor are arranged, the inhaled oxygen concentration (between 21 and 100 percent) is adjusted according to the treatment requirement. After the test is stable and the requirement is met, the patient can wear the nasal tube 19 connected with the threaded tube 20, and the two nasal tubes are placed in the front nostril of the patient and are fixed slightly below. The patient is observed for reaction and comfort, and for vital signs (especially oxygen saturation). The oxygen flow, the mixed intake flow, and the intake gas temperature may be adjusted again as needed. The dropping speed of the water for injection is adjusted to be too fast, the water can flow to the bottom of the air oxygen heating and humidifying device 16 without being completely vaporized, the amount of the generated steam is reduced when the dropping speed is too slow, and the temperature can be reduced. If water drops flow to the bottom of the air oxygen warming and humidifying device 16, the dropping speed is adjusted to be slow, and 30 drops per minute is tested to be preferable. The air oxygen heating and humidifying device is safe, and even if no water drops enter the device completely, the device cannot be overheated to cause danger, and cannot damage patients or equipment. If the embodiment of fig. 2 is adopted, after the water inlet pipe 2 is connected with the medical infusion tube 14 and the injection water container 13, the regulator 15 for controlling the speed of the liquid drops can be completely opened, the injection water flows into the empty oxygen heating and humidifying device 16 to reach a certain water level, the ball-shaped water stop valve 6 is started, the water inlet is closed, and the water level is opened again after falling, so that the inflow injection water is at a constant level. If the embodiment of fig. 6 is adopted, the configuration is more perfect, and the temperature, oxygen concentration and air flow display screen 24 and the adjusting button are arranged, and an intelligent monitoring chip, a monitoring alarm device and an automatic adjusting device can be additionally arranged.
The invention has the beneficial effects that: 1, the equipment structure is simplified, and the manufacturing cost is reduced. The air oxygen heating and humidifying device 16 provided with the vertical plate-shaped electric heating device 4 can be used by connecting the dropping device 14 with adjustable flow, the air oxygen mixing device 23 and the threaded pipe 20, the nasal tube 19 and the air suction device, and has the functions of heating and humidifying by high-flow oxygen therapy. 2 reduce consumptive material and host computer cost, the screwed pipe can be selected to use and does not have the constant temperature heater strip, because of can placing nearly bedside and lower position with empty oxygen humidification device that heats 16, screwed pipe 20 nose pipe 19 is walked upwards, and a small amount of condensate drop can be dripped back into empty oxygen humidification device that heats 16, and the complete machine cost is lower, but disposable, also can partly disinfect used repeatedly, is convenient for mass production and promotes the popularization. 3 PTC ceramic constant temperature electric heating vertical plate shaped knot is adopted in the electric heating device, PTC (positive temperature coefficient) is a positive temperature coefficient heat sensitive material, the PTC ceramic has the characteristic that the resistivity is increased along with the temperature rise, the PTC ceramic has small resistance below the Curie temperature, and the resistance step property above the Curie temperature is increased by thousands to millions times. The rated temperature (Curie temperature) is selected to be 100-120 ℃, the safety is high, the resistance of the device is rapidly increased after the rated temperature is reached, the power is reduced, and the device cannot be damaged due to overhigh temperature even if the device is continuously electrified without water. The vertical plate-shaped electric heating device 4 is adopted, water enters from top to bottom and is uniformly dripped, steam is rapidly generated by heating, the preheating time is less than 1 minute, the surface of the vertical plate-shaped electric heating device is covered with the thin layer of water absorbing material 5, water drops can be uniformly distributed, a small amount of accumulated water at the bottom of the vertical plate-shaped electric heating device can be enabled to be in siphon action through the water absorbing material 5, and heating vaporization is promoted. The air-oxygen mixed gas enters from the side surface of the air-oxygen heating and humidifying device 16 close to the bottom and rises along the periphery of the vertical plate-shaped structure electric heating device 4, so that the air-oxygen mixed gas can be heated and humidified quickly, the efficiency is improved, the space is reduced, and the volume of the whole machine can be reduced. And 4, an air valve with a respiration synchronization sensor and a controller is additionally arranged on the oxygen inlet pipe 21, when a patient inhales, the oxygen is synchronously opened, the oxygen is sprayed into the air-oxygen mixing device 23, when the patient exhales, the oxygen is closed, and the spraying of the oxygen is stopped, so that the oxygen consumption can be reduced. The air-oxygen mixing device 23 is designed by adopting the Venturi effect principle, and has the advantages that the existing products can be used in a matched manner, and can be customized specially, so that the expensive low-noise turbine fan and the adjusting device can be omitted, and the cost is further reduced. Various related medical devices matched with the medical oxygen inhalation mask are provided in most hospitals, such as infusion devices, oxygen sources, oxygen flow meters, oxygen nasal tube masks and even venturi oxygen inhalation nasal masks, and clinical specialists and nurses can be operated and used skillfully.
The high-flow oxygen therapy heating and humidifying device produced by implementing the invention can provide a patient with high-flow (8-80L/min) air-oxygen mixed gas with relatively constant oxygen absorption concentration (21-100%), temperature (31-37 ℃) and humidity (100%). The relatively simple and convenient intranasal high-flow humidifying oxygen therapy (HFNC) device can achieve the curative effect and the comfort which are equivalent to those of imported similar equipment, and has the advantages of cost reduction, small size, practicality, simple operation, safety, effectiveness and convenience for popularization and application in basic medical units. The invention is not only suitable for patients with moderate and severe new coronary pneumonia and hypoxic respiratory failure to use, protect and maintain respiratory function, promote rehabilitation, prevent disease deterioration, reduce the conversion of moderate pneumonia patients into severe or critical patients and reduce the death rate. The traditional Chinese medicine composition can be used for other patients with respiratory dysfunction in daily clinical medical work, such as adjuvant therapy of various pneumonia, Chronic Obstructive Pulmonary Disease (COPD) and partial severe sleep and respiratory disorder (OSA), and can also be used for rehabilitation therapy after the operation of upper airways of the sleep and respiratory disorder of the nose, throat and a plurality of general anesthesia surgery major operations.
In view of the foregoing, it will be seen that various other embodiments of the invention may be devised without departing from the basic scope thereof, and it is therefore intended that all such changes and modifications as fall within the true spirit and scope of the appended claims be interpreted as broadly as the invention is entitled to.
Claims (10)
1. The utility model provides a high flow oxygen is treated and is heated humidification device, includes empty oxygen mixing arrangement, empty oxygen humidification device that heats, screwed pipe nasal tube getter device and oxygen flow control and temperature monitoring adjusting device, its characterized in that: the air oxygen heating and humidifying device is in a vertical cylindrical shape, and is provided with a vertical plate-shaped structure electric heating device with a thin layer of water absorption material covered on the surface; the side surface of the air oxygen heating and humidifying device near the bottom end is provided with an air inlet which is connected with an air oxygen mixing device; the upper end of the air oxygen heating and humidifying device is provided with an air outlet which is connected with a screwed pipe nasal tube air suction device, and a water inlet pipe which is connected with a water dripping device capable of adjusting the flow is arranged at the same time.
2. The high flow oxygen therapy warming and humidifying device according to claim 1, wherein: the vertical plate-shaped structure electric heating device adopts a PTC ceramic constant-temperature electric heating plate, the input voltage is 12-220V, the power is 80-200W, the rated constant temperature is 100-120 ℃, the shell is made of metal material with good heat conduction, silicone heat-conducting glue is used for sealing and waterproof treatment, and the surface of the metal shell is covered with a thin layer of water absorbing material.
3. A high flow oxygen therapy warming and humidifying device as claimed in claim 1 or 2, wherein: the vertical plate-shaped structure electric heating device is of a single plate-shaped structure or a multi-layer plate-shaped structure, the height of the single plate-shaped structure electric heating device is 150-250 mm, the width of the single plate-shaped structure electric heating device is 15-25 mm, the thickness of the single plate-shaped structure electric heating device is 3-8 mm, the height of each layer of the multi-layer plate-shaped structure electric heating device is 2-5 layers, the width of each layer is 20-80 mm, the thickness of each layer of the multi-layer plate-shaped structure electric heating device is 3-5 mm, the interval of each layer of the multi-layer plate-shaped structure.
4. A high flow oxygen therapy warming and humidifying device as claimed in claim 1 or 2, wherein: the upper end of the air-oxygen heating and humidifying device is provided with a sealing cover, the sealing cover and the shell are made of non-toxic heat-resistant insulating materials, the sealing cover is preferably formed by injection molding of polypropylene or polycarbonate, a water inlet pipe is arranged on the sealing cover, a water outlet of the water inlet pipe is in a needle tube shape and is positioned above an electric heating device, a water inlet of the water inlet pipe is connected with a container filled with injection water or distilled water through a medical infusion tube, a regulator for controlling the speed of liquid drops is arranged on the medical infusion tube, an air outlet is arranged on the sealing cover and is connected with a screwed tube nasal tube.
5. The high flow oxygen therapy warming and humidifying device according to claim 4, wherein: the water inlet pipe of the sealing cover of the air oxygen heating and humidifying device is in a straight pipe shape, the distance between the tail end water outlet and the bottom of the air oxygen heating and humidifying device is adjustable by 20-50 mm, a floating ball-shaped water stop valve is arranged, the water inlet of the water inlet pipe is connected with a container filled with injection water or distilled water through a medical infusion pipe, and a regulator for controlling the speed of liquid drops is arranged on the medical infusion pipe.
6. A high flow oxygen therapy warming and humidifying device as claimed in claim 1 or 2, wherein: be equipped with the connecting pipe on the mixed air inlet of empty oxygen humidification device that heats, the connecting pipe is long for 40 to 60mm, it is middle narrow that its section is, the two inclined plane structures of mouth and flaring in both ends, interior mouth and flaring internal diameter are 15 to 20mm, middle narrow part internal diameter is 6 to 12mm, the nearly flaring department of connecting pipe is equipped with the side opening, and be equipped with the rotatory lid of taking same side opening, adjust two adjustable side opening coincidence of rotatory lid or stagger, the aperture of side opening is 8 to 16mm on connecting pipe and the rotatory lid, the fixed oxygen intake pipe in rotatory lid center, the internal diameter is 3 to 6mm, its terminal oxygen spout internal diameter is 1.5 to 3mm, be located the narrow part in the middle of the connecting pipe.
7. A high flow oxygen therapy warming and humidifying device as claimed in claim 1 or 2, wherein: the oxygen intake pipe is connected with a medical oxygen gas source through a connecting pipe, the medical oxygen gas source is connected with an oxygen flow meter and is simultaneously connected with a gas valve with a breathing synchronous sensor and a controller, and the breathing synchronous sensor is a micro pressure sensor or an airflow sensor and is positioned on a nasal tube of a screwed tube nasal tube air suction device.
8. A high flow oxygen therapy warming and humidifying device as claimed in claim 1 or 2, wherein: the metal shell with good heat conduction of the vertical plate-shaped structure electric heating device is made of aluminum, copper or stainless steel materials, the thin layer water absorption material covered on the surface of the metal shell is made of cotton yarn or water absorption fibers, and the lower end of the water absorption material is tightly attached to the bottom of the inner side of the air-oxygen heating and humidifying device.
9. A high flow oxygen therapy warming and humidifying device as claimed in claim 1 or 2, wherein: the air-oxygen heating and humidifying device is installed in a case, a fixing device capable of being fixed on a medical infusion support is arranged behind the case, and a turbo fan and an air-oxygen mixing device are arranged in the case and are connected with an air inlet on the side surface of the air-oxygen heating and humidifying device close to the bottom end through a pipeline.
10. A high flow oxygen therapy warming and humidifying device as claimed in claim 1, 2 or 9, wherein: the air-oxygen heating and humidifying device is characterized in that a monitoring device is arranged in the case and connected with a temperature sensor, an oxygen concentration sensor and an air-oxygen mixture flow sensor, the temperature sensor is arranged at an outlet of the air-oxygen heating and humidifying device, the oxygen concentration sensor and the air-oxygen mixture flow sensor are arranged at an inlet of the air-oxygen heating and humidifying device, and a panel of the case is provided with a temperature, oxygen concentration and flow display screen and an adjusting button.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113856075A (en) * | 2021-11-03 | 2021-12-31 | 中国人民解放军总医院第二医学中心 | Portable oxygen therapy system |
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