CN219185370U - Jet atomizer air current guiding system and jet atomizer - Google Patents

Abstract

The utility model relates to an airflow guiding system of a jet atomizer, which comprises a first three-way element, wherein the first end of the first three-way element is communicated with an air inlet, the second end of the first three-way element is communicated with an oxygen inlet, and the third end of the first three-way element is communicated with an air inlet of an air pump; the air outlet of the air pump is communicated with the inlet of the air heater; a second temperature sensor is arranged in the air heater; the outlet of the air heater is communicated with the first end of the second tee joint through the first temperature sensor, the second end of the second tee joint is communicated with the air leakage port, and the third end of the second tee joint is used for being connected into the jet atomizer. The utility model changes the air source into the mixed gas of air and oxygen by redesigning the air path of the existing atomizer, the oxygen concentration is adjustable, and meanwhile, the heating module is added, so that the temperature of the air flow is adjustable, and the utility model is more suitable for clinical application. The adverse situation that the patient can only select air or pure oxygen for treatment when receiving atomization treatment is avoided, and the patient can be regulated according to the requirement of the patient on oxygen.

Description

Jet atomizer air guide system and jet atomizer

technical field

The utility model relates to a jet atomizer and an airflow guiding system of the jet atomizer, belonging to the technical field of medical equipment.

Background technique

Nebulization therapy is currently a common method for the treatment of acute and chronic respiratory diseases in adults and children. It is routinely used in the treatment of various respiratory diseases such as acute exacerbation of bronchial asthma, acute exacerbation of chronic obstructive pulmonary disease, and bronchiectasis. Compared with systemic medication, aerosol inhalation has the following advantages: 1. The drug concentration in the local airway is high and the effect is strong; 2. The drug directly acts on the airway epithelium and smooth muscle cells, and the effect is fast; 3. The dose of the drug absorbed into the blood circulation Very small, less systemic side effects; 4. Compared with oral medication, the drug does not undergo liver metabolism, and there is no first-pass effect; 5. Drug preparation and application are convenient. Due to the popularity of household medical equipment such as nebulizers and oxygen concentrators, nebulization therapy can be carried out not only in hospitals, but also at home. Therefore, nebulization therapy is widely used.

At present, there are three commonly used atomization treatment methods, jet atomization, ultrasonic atomization and vibrating mesh atomization. The three atomization methods make the drug solution form an aerosol by different means. Jet nebulization is the most widely used nebulization inhalation therapy. During jet atomization treatment, the drug solution is placed in the atomization tank, and when the high-speed airflow passes through the central thin tube of the atomization tank, the drug solution is sucked into the pipeline under the action of the Venturi effect, and is impacted into droplets with the high-speed airflow, forming An aerosol that enters the airway when the patient inhales to exert a therapeutic effect. Therefore, high-speed airflow is the key driving force for generating pharmaceutical aerosols. At present, jet atomization is driven by high-pressure air or oxygen. High-pressure air is generated by an atomizer. The main structure of the atomizer is an air compression pump, which sucks in the surrounding air, forms a high-speed airflow with a constant flow rate (generally about 6-7L/min) through the action of the pump, and outputs it through an outlet similar to the caliber of the oxygen suction tube, and passes through the catheter Connect the atomizing tank so that the air flow is introduced into the atomizing tank to produce aerosol of medicine (see Figure 2).

Its shortcoming is: 1) what atomizer outputs is air, and oxygen concentration is 21%, and the patient of respiratory tract disease often has hypoxia, needs supplementary extra oxygen. The process of atomization inhalation often takes 15-20 minutes. If the oxygen concentration cannot be increased, there is a risk for hypoxic patients; 2) The air temperature output by the atomizer is room temperature, which is greatly affected by the ambient temperature, and cold air can stimulate The bronchi of patients with respiratory diseases cause bronchospasm and adverse reactions occur.

Another common source of high-velocity gas flow is centrally supplied high-pressure oxygen through wall lines, primarily in hospitals. When this method is used, the meter head and humidification tank can be used to adjust the flow rate of high pressure oxygen on the wall, so that the output flow rate is about 5-6L/min, and then the atomization tank can be connected to carry out atomization treatment. Its disadvantages are: 1) It can only be used in a hospital environment; 2) The high-speed airflow is pure oxygen, and the oxygen consumption is large. For patients with type II respiratory failure such as chronic obstructive pulmonary disease and asthma, there is a risk of aggravating carbon dioxide retention; 3) The temperature of the airflow is also room temperature, which can easily induce bronchospasm.

In summary, the existing jet atomization either uses air or high-pressure oxygen, but cannot adjust the concentration and temperature of oxygen, which eventually causes the above-mentioned problems.

Utility model content

The purpose of this utility model is to provide a jet atomizer airflow guidance system and a jet atomizer. By redesigning the gas path of the existing atomizer, the gas source becomes a mixed gas of air and oxygen, and the oxygen concentration It is adjustable. At the same time, a heating module is added to make the airflow temperature adjustable, which is more suitable for clinical applications. The utility model takes the following technical solutions:

An airflow guiding system for a jet atomizer, comprising a first three-way element, the first end of the first three-way element communicates with the air inlet, the second end communicates with the oxygen inlet, and the third end communicates with the air pump The air inlet is connected; the air outlet of the air pump is connected with the inlet of the air heater; the second temperature sensor is arranged in the air heater; the outlet of the air heater passes through the first temperature sensor and the first connection of the second tee. The second end of the second three-way is connected with the air leakage port, and the third end of the second three-way is used to connect to the jet atomizer.

Preferably, a first solenoid valve is provided at the first end of the first three-way element.

Further, the second end of the first three-way element is provided with a second solenoid valve.

Preferably, a filtering device is provided on the air path between the first three-way element and the air pump.

Preferably, an oxygen concentration sensor is provided on the air path between the air pump and the air heater.

Preferably, the air leakage port is provided with a fourth solenoid valve.

Preferably, the third end of the second three-way is provided with a third solenoid valve.

Preferably, the air pump outputs a constant flow rate of 6-7L/min.

Further, it also includes a single-chip microcomputer used as a control center, the single-chip microcomputer obtains the value of the oxygen concentration sensor, and controls the opening degree of the first electromagnetic valve and the second electromagnetic valve; The numerical value regulates the start and stop of the air heater.

A jet atomizer adopts the air flow guide system of the jet atomizer mentioned above.

The beneficial effects of the utility model are:

1) By redesigning the gas circuit of the existing atomizer, the gas source is changed to a mixed gas of air and oxygen, and the oxygen concentration can be adjusted. At the same time, a heating module is added to make the air flow temperature adjustable, which is more suitable for clinical application . It avoids the unfavorable situation that patients can only choose air or pure oxygen treatment when receiving nebulization treatment, but can adjust it according to their own condition's demand for oxygen.

2) The source of oxygen is low-pressure oxygen, which can be converted from high-pressure oxygen or provided by a household oxygen generator. It is suitable for different scenarios such as hospitals and homes, and has a wide range of applications.

3) The gas temperature is controllable, which can avoid the adverse effect of cold air stimulation on the airway and reduce the occurrence of complications.

Description of drawings

Fig. 1 is a schematic diagram of the principle of a jet atomizer (prior art).

Fig. 2 is a schematic diagram of a jet atomizer (prior art), wherein (a) is the body of the atomizer, and (b) is a schematic diagram of the connection of the atomizer.

Fig. 3 is a schematic diagram of the gas path structure of the airflow guiding system of the jet atomizer of the present invention.

Fig. 4 is a schematic diagram of the human-computer interaction interface of the airflow guidance system of the jet atomizer of the present invention.

In the figure, 1. Liquid medicine cup bracket, 2. Connector, 3. Filter cover (with filter inside), 4. Power switch, 5. Air vent.

Detailed ways

Below in conjunction with accompanying drawing and specific embodiment the utility model is further described.

The airflow guidance system of the jet atomizer of the utility model does not involve the transformation of the jet atomizer itself, but optimizes the guidance of the airflow entering the jet atomizer.

The utility model changes the gas path of the atomizer, the gas source is changed from the original air to the mixed gas of air and oxygen, and the original piston air pump is retained to provide high-speed air flow and output a constant air flow rate (6-7L/min ), adding airflow adjustment and detection elements to make it have the function of adjusting oxygen concentration and temperature, as shown in Figure 3.

Referring to Fig. 3, an airflow guidance system of a jet atomizer includes a first three-way element, the first end of the first three-way element communicates with the air inlet, the second end communicates with the oxygen inlet, and the third end communicates with the air inlet of the air pump; the air outlet of the air pump communicates with the inlet of the air heater; the air heater is provided with a second temperature sensor; the outlet of the air heater passes through the first temperature sensor and the second three The first end of the second tee is connected to the first end, the second end of the second three-way is connected to the vent port, and the third end of the second three-way is used to connect to the jet atomizer.

In this embodiment, the first end of the first three-way element is provided with a first solenoid valve.

In this embodiment, the second end of the first three-way element is provided with a second solenoid valve.

In this embodiment, a filter device is provided on the air path between the first three-way element and the air pump.

In this embodiment, an oxygen concentration sensor is provided on the air path between the air pump and the air heater.

In this embodiment, the air release port is provided with a fourth solenoid valve.

In this embodiment, the third end of the second three-way is provided with a third solenoid valve.

In this embodiment, the air pump outputs a constant flow rate of 6-7 L/min.

In this embodiment, it also includes a single-chip microcomputer used as a control center, the single-chip microcomputer obtains the value of the oxygen concentration sensor, and controls the opening degree of the first electromagnetic valve and the second electromagnetic valve; The value of the temperature sensor adjusts the power of the air heater; for example, through the automatic start and stop of the air heater, the indication values of the first temperature sensor and the second temperature sensor can be maintained within the range of 31-36°C.

Continuing to refer to Fig. 3, the value of the oxygen sensor is obtained by the single-chip microcomputer, the first solenoid valve (solenoid valve 1) and the second solenoid valve (solenoid valve 2) are controlled to adjust the oxygen concentration and flow rate, and the first temperature sensor (temperature sensor 1) and the second solenoid valve are controlled to adjust the oxygen concentration and flow rate. The second temperature sensor (temperature sensor 2) can adjust and control the air heater. When the stable temperature and oxygen flow rate are obtained, the fourth solenoid valve (solenoid valve 4) is closed, and the third solenoid valve (solenoid valve 3) is opened to start formal gas delivery. It should be noted that the single-chip microcomputer here is equivalent to the controller, which regulates the opening of the corresponding solenoid valve by obtaining the indication value of the sensor, and adjusts the start and stop of the air heater by obtaining the indication value of the temperature sensor. current technology.

As for the air heater itself, it also belongs to the prior art, and the air heater is an electric heating device mainly for heating the gas flow. The heating element of the air heater is a stainless steel electric heating tube. In this application, all the air paths of the airflow guidance system of the jet atomizer are made of plastic or rubber hoses. 30-35° is enough, so the electric heating tube inside the air heater needs to keep a certain distance from the air hose, and use air for heat transfer to heat the air hose.

The inner cavity of the heater is equipped with multiple baffles (deflectors) to guide the gas flow and prolong the residence time of the gas in the inner cavity, so that the gas is fully heated, the gas is heated evenly, and the heat exchange efficiency is improved. The heating element of the air heater is a stainless steel heating tube, which is made by installing a heating wire in a seamless steel tube, filling the gap with magnesium oxide powder with good thermal conductivity and insulation, and shrinking the tube. When the current passes through the high-temperature resistance wire, the generated heat diffuses to the surface of the heating tube through the crystalline magnesium oxide powder, and then transfers to the heated air to achieve the purpose of heating.

The oxygen inlet is a low-pressure oxygen inlet, and the oxygen output through the meter head and the humidification tank or the oxygen from the household oxygen generator can be used as the oxygen source. Since the output air flow of the atomizer is constant, if the input oxygen flow is not enough to provide the output air flow under the required output oxygen concentration, the additional air flow will be supplemented by air. In this case, the second The solenoid valve (solenoid valve 2) can be omitted.

A jet atomizer adopts the air flow guide system of the jet atomizer mentioned above.

The utility model, through the reasonable improvement of the gas path of the atomizer, enables the patient to receive appropriate oxygen therapy while undergoing atomization therapy, and can also heat the air flow to reduce the occurrence of adverse reactions.

When in use, connect one end of the oxygen conduit to the head of the wall humidification bottle or the oxygen outlet of the oxygen generator, and then connect the other end of the oxygen conduit to the oxygen inlet of the atomizer. After the atomizer is started, set the required Nebulization temperature, after setting the required oxygen flow rate and temperature, you can observe the oxygen concentration, temperature and instrument status display on the man-machine interface. If the instrument status is displayed as normal output, you can connect the nebulizer tank for nebulization treatment.

Above is the preferred embodiment of the present utility model, those skilled in the art can also carry out various changes or improvements on this basis, under the premise of not departing from the general design of the present utility model, these changes or improvements should all belong to the present utility model Within the scope of the new type of protection.

Claims (10)

1. A jet atomizer airflow guiding system, characterized in that: Including a first three-way element, the first end of the first three-way element communicates with the air inlet, the second end communicates with the oxygen inlet, and the third end communicates with the air inlet of the air pump; The air outlet of the air pump communicates with the inlet of the air heater; the air heater is provided with a second temperature sensor; The outlet of the air heater communicates with the first end of the second three-way through the first temperature sensor, the second end of the second three-way communicates with the air leakage port, and the third end of the second three-way is used for accessing Jet atomizer. 2. The airflow guiding system of a jet atomizer according to claim 1, wherein a first solenoid valve is provided at the first end of the first three-way element. 3. The airflow guiding system of a jet atomizer according to claim 1 or 2, characterized in that: a second solenoid valve is provided at the second end of the first three-way element. 4. The airflow guiding system of the jet atomizer according to claim 1, characterized in that: a filtering device is arranged on the airway between the first three-way element and the air pump. 5. The airflow guiding system of the jet atomizer according to claim 1, wherein an oxygen concentration sensor is arranged on the air path between the air pump and the air heater. 6. The airflow guidance system of a jet atomizer according to claim 1, wherein a fourth electromagnetic valve is provided at the air leakage port. 7. The airflow guiding system of a jet atomizer according to claim 1, wherein a third solenoid valve is provided at the third end of the second three-way. 8. The airflow guidance system of the jet atomizer according to claim 1, characterized in that: said air pump outputs a constant airflow rate of 6-7L/min. 9. The jet atomizer airflow guidance system according to claim 3, further comprising a single-chip microcomputer used as a control center, the single-chip microcomputer obtains the value of the oxygen concentration sensor, and controls the first electromagnetic valve and the second electromagnetic valve. The opening degree of the valve; at the same time, the start and stop of the air heater are adjusted by obtaining the values of the first temperature sensor and the second temperature sensor. 10. A jet atomizer, characterized in that it adopts the airflow guiding system of the jet atomizer according to any one of claims 1-7.

Images