Development and design of medical nebulizer
In the past, the application of nebulizers has existed more in the medical field. With the continuous development of society, nebulizers have been widely used in people's daily lives. The atomizer is a device that guarantees the indoor air humidity by atomizing water and can also produce a certain amount of negative oxygen ions. Facing the increasingly diverse needs of the public, we need to optimize and improve it.
In recent years, with the rapid development of science and technology, people have increasingly higher requirements for the quality of life. Therefore, in winter, people use an atomizer to adjust the indoor air humidity to cope with the problem of drying indoor air due to heating, thereby improving the quality of life. However, turning on the atomizer for a long time not only wastes resources and increases losses, but also continuously increasing the indoor narrow air humidity also has an adverse effect on body health, so it is particularly important to optimize the intelligent performance of the atomizer.
1. The principle of ultrasonic atomizer
Ultrasonic atomizers use electronic high-frequency oscillations and utilize the high-frequency resonance of ceramic atomizers to break up the liquid water molecular structure to produce naturally flowing water particles.
The intelligent control of the ultrasonic atomizer is to use the single chip microcomputer as the control core, analyze and process the signals input from the outside world, and convert the analysis results into signals to control the atomizer, the display unit and the water level control unit. The entire system consists of modules including: atomizer, control panel, humidity sensor, water level sensor, acousto-optic display device and various implementing devices.
The working process of the system is: after the power is turned on, the temperature sensor and the humidity sensor convert the indoor temperature and humidity into a signal, which is transmitted to the single-chip microcomputer. At the same time, the system automatically detects the temperature and humidity values set by the user. The system calls the default parameters to work. When the indoor humidity value and temperature value reach the user's set value or the system default value, the atomizer will automatically stop running, and switch to maintain this temperature value and humidity value state, then when the indoor temperature and humidity drop, the atomizer Work automatically, increase the temperature and humidity again to the user set value or the system default value, the system repeats in this way, can keep the indoor temperature and humidity at a constant value.
5. Scheme design of medical nebulizer
Nebulized inhalation therapy during the application of the ventilator can improve the patient's ventilation function and prevent or control respiratory infections. At present, the clinical application is to add nebulized inhaled drugs to the nebulizer, and then connect the nebulizer with the breathing circuit for nebulization treatment. The mouth-containing atomizer is improved, and a spiral switch is added to the atomizing spray outlet, and a medicine injection interface is added to the wall of the medicine storage cavity. It can be used for the patient's aerosol inhalation operation during the use of the ventilator. It can avoid repeatedly opening the breathing circuit. During the use of the ventilator, the liquid can be directly added without affecting the operation of the ventilator. It will not increase the invalid cavity of the breathing circuit, promote the standardization of hospital infection management, and can better serve the clinic.
1. Design principle of medical nebulizer
The atomizer device is mainly composed of an atomization generating device at the bottom of the atomizer, a medicine storage cavity and a three-way connecting pipe. Improve the above atomizing device, add a screw structure switch on the outer wall of the vertical end of the three-way T-tube, and add two closing pieces on the inside, and rotate the screw structure. When the two closing pieces are completely overlapped, the maximum caliber for atomization is ejected ; When there is no overlap between the two sealing pieces, the atomizing spray outlet is closed. In addition, the atomizing device has a medicine injection interface on the outer side wall of the medicine storage cavity to match the nipple of the syringe. Before the atomization inhalation, a syringe without a needle is used to inject medicine into the medicine storage cavity; the interface is closed with a heparin cap. In the process of chemical inhalation, the latex plug of the heparin cap can be pierced with a needle to add medicine to the medicine storage cavity.
2. How to use medical nebulizer
Add the medicine into the medicine storage cavity, connect the gas source, place the three-way pipe into the inhalation end of the ventilator circuit, and press the atomizing key of the ventilator to generate a spray. Open the thread structure of the atomization device to realize the atomization inhalation operation during the use of the ventilator. During the nebulization process, if you need to add nebulized drugs, use a needle tip to pierce the latex plug through the heparin cap to add drugs to the drug storage cavity.
After the atomization is inhaled, the rotating thread structure is closed, that is, the atomization spray outlet is closed, the channel between the medicine storage cavity and the three-way pipe is blocked, that is, the medicine storage cavity and the patient's breathing circuit are blocked. Inject medicine into the medicine storage cavity again, open the atomizing key of the machine, and turn the screw of the screw structure to realize the atomizing and inhaling operation again. There is no need to take out the atomizing device without special needs.
3. Advantages of medical nebulizer solution
After the nebulizer currently in clinical use, if the nebulizer is not taken out, the medicine storage cavity will increase the ineffective cavity of the breathing circuit, and the medicine storage cavity is in the low position of the breathing circuit, which is easy to retain condensed water; if the nebulizer is used Remove it and the breathing circuit will be disconnected again. When the atomization and suction treatment is performed again, or when medicine is added during the atomization process, the closed circuit between the patient and the ventilator will inevitably be disconnected. Repeatedly opening the closed circuit between the patient and the ventilator, interrupting the normal operation of the ventilator, undoubtedly increases the chance of airway infection of the patient, and also increases the external environment and medical staff are contaminated by patient droplets or airway secretions Opportunity.
The additional screw structure and the injection joint of the atomizing device successfully solve the above problems. The atomizer can avoid repeated opening of the breathing circuit due to the atomizing inhalation operation. It can also directly add the liquid medicine during the use of the ventilator without affecting the operation of the ventilator, which can protect the closedness of the circuit between the patient and the ventilator; atomization After the suction is completed, it will not accumulate condensate due to the drug storage cavity, nor will it increase the ineffective cavity of the breathing circuit; it can reduce the chance of the external environment and medical personnel being contaminated by patient droplets or airway secretions, and can also reduce medical personnel The workload; can promote the standardization of hospital infection management, should be able to better serve the clinic.