First of all, let's learn about the important parameters of the oxygen generator. Please pay attention to know whether those important parameters meet the requirements before buying.
What is an oxygen generator? As the name implies, it is a machine that makes oxygen.
Now, there are many types of oxygen generators on the market. Because of their different oxygen making principles, their use characteristics are also different. According to the principle of oxygen production, there are mainly molecular sieve principle, polymer oxygen-enriched membrane principle, electrolytic water principle, chemical reaction oxygen production principle and so on.
The early principle of oxygen production was chemical oxygen production, that is, using chemical reagents to produce oxygen. Because this method can not supply oxygen continuously for a long time, and the chemical reagent is expensive, the cost of oxygen production is high, it has been eliminated by the market. The molecular sieve oxygen generator uses air as raw material, which only consumes electric energy. The raw material is air, which has no cost and is inexhaustible. It is not only superior to other oxygen generators, but also more convenient to use than liquid oxygen tanks and steel cylinders, and is not affected by factors such as market oxygen price increase and transportation cost.
Molecular sieve oxygen generator is the only mature oxygen generator with both international and national standards. Therefore, it is suggested to buy an oxygen generator based on molecular sieve principle, especially for treatment.
The working principle of molecular sieve oxygen generator is mainly using molecular sieve physical adsorption and desorption technology.
The molecular sieve is filled in the oxygen generator, which can adsorb nitrogen in the air when pressurized, and the remaining unadsorbed oxygen is collected and purified into high-purity oxygen.
When the molecular sieve depressurizes, it discharges the adsorbed nitrogen back to the ambient air, and can adsorb nitrogen and generate oxygen when it is pressurized next time. The whole process is a periodic dynamic cycle process and does not consume molecular sieve.
Many people confuse the oxygen concentration with the oxygen absorption concentration of the oxygen generator, thinking that they are the same concept, but in fact, they are completely different.
The oxygen concentration of the oxygen generator refers to the size of the oxygen content, which is the purity of the oxygen output by the oxygen generator. The oxygen concentration of different oxygen generators is different. In order to ensure the long-term application and therapeutic effect, it is suggested to choose an oxygen generator that meets the 93% 3 oxygen concentration standard stipulated by China.
Many people don't know what 1L oxygen generator, 3L oxygen generator and 5L oxygen generator mean. In fact, that is the maximum oxygen output that this oxygen generator can provide per minute on the premise of ensuring oxygen concentration.
When the flow rate exceeds the maximum oxygen flow rate, the oxygen concentration will decrease, and the effect of oxygen absorption will also decrease, or even have no effect.
On the premise that the national standard oxygen concentration is 93% 3, according to the reference standard of the maximum oxygen output of the oxygen generator, it can be divided into 1L, 3L, 5L, 8L, 9L, 10L, etc. The adaptive crowd and service performance of oxygen generator are defined as follows:
■ 1L oxygen generator
1L oxygen generator is an oxygen generator with the maximum oxygen production of 1L/min on the premise that the oxygen concentration reaches the standard. This kind of oxygen generator is relatively cheap, and it is suitable for pregnant women who need whole-body oxygen inhalation and mental workers who have been working hard for a long time (such as students and white-collar workers in the company). Mainly used for health care. Generally, you can carry out oxygen therapy for about 30 minutes to relieve temporary fatigue and make yourself more energetic.
■ 3L oxygen generator
The 3L oxygen generator can meet the standard of medical oxygen, and the maximum oxygen output is 3L/ min, that is to say, the oxygen flow rate can be adjusted within the range of 0 ~ 3L/ min, only less and not more, and the flow rate of 3L/ min cannot be increased, otherwise the output oxygen will be unstable.
This kind of oxygen generator is generally around 2000 to 4000 because of the different prices of different brands. It is suitable for home oxygen therapy for the elderly or some patients with chronic diseases (such as cardiovascular and cerebrovascular hypoxia, hypertension, hyperglycemia, obesity, etc.). Objective To improve oxygen saturation and prevent other diseases.
■ 5L oxygen generator
When the oxygen concentration of 5L oxygen generator reaches the standard, the maximum oxygen output can reach 5L/min. It is suitable for patients with cardiopulmonary diseases (such as chronic obstructive pulmonary disease and cor pulmonale).
■ 8L oxygen generator
The 8L oxygen generator is mainly used for special patients with high oxygen flow and long-term oxygen inhalation. This kind of patients can't stay away from oxygen for a long time, so with this kind of oxygen generator, it is avoided to spend time and energy repeatedly inflating oxygen bottles every few days.
When oxygen is inhaled by the oxygen generator, the effective oxygen concentration in the patient's lungs is determined by the oxygen flow rate of the oxygen generator and the corresponding oxygen concentration. For example, excluding the influence of patient factors such as respiratory frequency and tidal volume, the effective oxygen concentration (%) reaching the patient's lungs when the nasal catheter inhales oxygen = 21+4× oxygen flow rate of the oxygen generator× oxygen concentration of the oxygen generator.
If it is used for therapeutic purposes, it is recommended to buy an oxygen generator with an oxygen production of not less than 3L; For patients who need ltot, it is recommended to use an oxygen generator with an oxygen output of not less than 5L, which not only has a large adjustable range and can give a relatively high oxygen flow, but more importantly, it can ensure long-term oxygen supply, and the oxygen output concentration can be stabilized at more than 90%, thus achieving a good therapeutic purpose, especially for patients who need to use a home noninvasive ventilator at the same time.
Home noninvasive ventilator is different from hospital noninvasive ventilator. The oxygen source is usually provided by an additional oxygen generator because the mask has a CO2 "storage effect" and the pressure in the mask is relatively high. When the flow rate is less than 5L/min, oxygen can't enter the mask well, naturally it can't enter the airway and lungs, and at the same time it can't wash out exhaled CO2, thus affecting the therapeutic effect.
If the oxygen generator is only used for health care, it is often small in size and has poor heat dissipation function, so it cannot work for a long time. Most medical oxygen generators used for therapeutic purposes can work 24 hours a day.
Patients with chronic obstructive pulmonary disease complicated with chronic respiratory failure need oxygen for no less than 15 hours every day, so it is necessary to choose an oxygen generator that can supply oxygen for a long time to avoid failing to meet the treatment needs.
It is recommended to choose a low-noise oxygen generator, and the noise level is preferably less than 45 ~ 48 decibels, otherwise it may affect the rest of yourself and others, especially at night. The level of noise control is related to the manufacturer's level and the volume structure of the oxygen generator. Generally, a larger oxygen generator is less noisy, because it has enough space to install sound insulation components and internal structures to reduce noise.
When the oxygen generator is working, try not to put it in a narrow space or on the wooden floor, because it will increase the echo or other extra noise. People who are very sensitive to noise can place the oxygen generator relatively far away from the oxygen inhaler and connect it through a long oxygen inhalation tube.
Before buying an oxygen generator, besides knowing the important parameters of the oxygen generator and having a stable and efficient oxygen supply system, we should also pay attention to the following points:
■ Be clear about why you want to take oxygen.
Whether for health care or treatment, you should choose an oxygen generator that can meet your own needs, such as the maximum oxygen flow and the daily oxygen intake time. For example, for patients with chronic respiratory or heart failure, hypoxemia, chronic obstructive pulmonary disease and other diseases, we should choose a medical-grade oxygen generator that can keep the oxygen concentration up to standard under 24-hour uninterrupted working conditions. For pregnant women or students who often use their brains too much, 1L ~ 2L oxygen generator is generally selected, with relatively low price and guaranteed quality.
■ Pay attention to the "value" of oxygen generator.
Different grades of oxygen generators should be selected according to the needs of illness and economic ability, that is to say, "price" and "value" should be considered together to avoid blindly pursuing low "price" and ignoring the "value" of important technical content, which will lead to adverse consequences. Similarly, there is no need to waste resources in order to buy only the most expensive ones and not the most suitable ones.
■ Practicality first, not deliberately pursuing beauty.
Domestic oxygen generator is a medical device, not an object for beautiful exhibition. Don't be brainwashed by the trap that some merchants choose fancy appearance as a selling point because the technology is not too hard. This is actually not practical.
Especially for people who need oxygen for a long time, the machine must be able to work continuously for a long time. It is best to choose a machine with moderate size, excellent performance, optimized internal structure and ideal heat dissipation space.
■ Large screen and voice function
High-definition big screen and big buttons can be more convenient for middle-aged and elderly people, especially with backlight buttons, which can clearly read oxygen at night. Voice function, so that the elderly can easily know their oxygen intake without wearing reading glasses.
■ Timing function
Just like blowing an electric fan to sleep, if users only need to take oxygen for one hour when they want to sleep, they can set a good time before going to bed, sleep peacefully and automatically turn off the power. If there is no timer function, I'm afraid I won't be safe when I sleep, or I'll waste electricity when I'm on.
Of course, the timing function, like the big screen and voice function, is "optional", which depends on your own economic conditions and needs, because the more functions, the higher the price.
■ Atomization function
Especially for patients with respiratory diseases such as chronic obstructive pulmonary disease and asthma, it not only meets the demand of oxygen supplement, but also can easily and conveniently carry out atomization inhalation treatment at home, saving the time of repeatedly going to the hospital to queue up and reducing the cost of medical treatment.
■ Choose a brand manufacturer with strength and credibility.
At present, there are many kinds of domestic oxygen generators with uneven quality. The strength of manufacturers varies greatly. Survival of the fittest will inevitably lead to the elimination of some manufacturers or brands. We must pay attention to this. If you buy obsolete brands, there is no guarantee for after-sales service.
Therefore, when purchasing an oxygen generator, it is recommended to choose an oxygen generator manufacturer or brand with strong strength, good reputation, guaranteed quality and long-term sustainable development, preferably a local organization with perfect after-sales service. Whether domestic or foreign brands, after-sales maintenance and parts replacement are particularly important, and only guaranteed brand manufacturers can guarantee sustainable development and after-sales maintenance services. At the same time, it must be purchased through formal channels, and the procedures are complete, which is more secure.
■ Oxygen generator has "four fears"
Fear of fire, heat, dust and tide.
Therefore, when using the oxygen generator, it is necessary to stay away from the fire source and avoid direct light (sunlight) and high temperature environment; Usually, attention should be paid to the replacement, cleaning and disinfection of nasal catheter, oxygen delivery catheter and humidification heating device to prevent cross-infection and catheter blockage; When the oxygen generator is idle for a long time, cut off the power supply, pour out the water in the humidification bottle, wipe the surface of the oxygen generator clean, cover it with a plastic cover and store it in a dry and sunless place; Before transporting the machine, the water in the humidifying cup should be poured out and the important accessories (such as molecular sieve, compressor, pneumatic valve, etc.) should be removed. ) will be damaged if the oxygen generator enters the water or gets wet.
■ Pay attention to proper heating and humidification when inhaling oxygen.
Because maintaining the temperature of 37℃ and the humidity of 95% ~ 100% in the respiratory tract are the necessary conditions for the normal clearance function of the mucociliary system, the inhaled oxygen should pass through the humidification bottle and the necessary heating device to avoid irritating and damaging the airway mucosa by inhaling dry and cold oxygen, resulting in dry sputum and affecting the "scavenger" function of the cilia.
■ When the oxygen generator is started, do not set the floating ball of the flowmeter to zero; In the process of oxygen inhalation, pay attention to check whether the floating ball of the flowmeter is in the correct calibration position.
■ If the molecular sieve oxygen generator is not used for a long time, it will reduce the activity of molecular sieve, so attention should be paid to the start-up, operation and maintenance.
■ Cut off the power supply when the oxygen generator is used or not, which is not only to reduce the consumption of the machine and energy, but also for fire safety.
■ Before the oxygen generator supplies oxygen to the oxygen bag tank, the oxygen bag cannula must be unplugged first, and then the oxygen generator should be turned off, so as to avoid the negative pressure of water in the humidification bottle being sucked back into the machine, causing machine failure.
■ When the oxygen generator is working, it should be placed in a stable space with a radius of not less than 20 cm, and its environment should pay attention to proper ventilation and air quality.
■ Different people, different conditions, have different requirements for oxygen inhalation.
For example, people with carbon dioxide retention (such as chronic obstructive pulmonary disease complicated with chronic respiratory failure) should pay attention to controlling oxygen inhalation, that is, under normal circumstances, the oxygen flow rate should not exceed 3L/ min, and 1 ~ 2l/ min is appropriate, because high concentration of oxygen inhalation will lead to respiratory depression and aggravate the condition of such patients; Although oxygen inhalation is good for pregnant women, we should also pay attention to follow the doctor's advice and avoid blindly inhaling oxygen in high concentration for a long time.
■ Oxygen generator can be used for health care and general oxygen therapy (including altitude hypoxia, respiratory diseases, cardiovascular and cerebrovascular diseases, etc.). ), but can not be satisfied with the advanced life support during rescue.