CN105903115A - Multifunctional breather valve - Google Patents

Abstract

The invention discloses a multifunctional breathing valve, which includes a breathing valve body, a pipeline, and a patient-end interface arranged on the pipeline, an aerosol gas connection port, and an exhaust port; the aerosol gas connection port is provided with a one-way suction valve; the exhaust port is provided with a limiting plate, the limiting plate is provided with a communication port, and an exhalation resistance adjustment device is arranged for the communication port; the exhalation resistance adjustment device includes a one-way exhalation valve, a return spring, And the resistance regulator; the present invention ensures that the aerosol gas is fully inhaled into the lungs, the aerosol gas is output synchronously during inhalation, discharges secretions in time, the pipeline pressure is stable under different pressure levels of non-invasive mechanical ventilation and avoids the airway during mechanical ventilation Lung injury caused by excessive pressure; one-way valve for aerosol inhalation therapy, oscillating expectoration, exhalation valve for non-invasive mechanical ventilation, cough relief valve during mechanical ventilation, and valve for respiratory muscle training.

Description

A multifunctional breathing valve

technical field

The invention relates to the technology in the field of medical equipment, in particular to a multifunctional breathing valve.

Background technique

Aerosol inhalation therapy is one of the common treatment methods in the Department of Respiratory Medicine. The aerosol gas inhaled into the lungs along with the air flow must reach the small airways to exert its curative effect. However, breathing has an inspiratory phase and an exhalation phase. When inhaling, the aerosol gas can reach the lungs along the inspiratory airflow. Yes, so that the aerosol gas during exhalation is expelled before it can do its job. In addition, there is an anatomical dead space in the respiratory tract, which is the part of the airway from the mouth to the respiratory bronchioles. The anatomical dead space of a normal adult is 140ml, and there are few differences between individuals. When exhaling, the first exhaled gas is the anatomical dead space. Gas, then, comes from the bronchioles and alveoli. At the end of exhalation, the gas that stays in the anatomical dead space is the gas just exhaled from the alveoli. When inhaling, the gas that first enters the small airways and alveoli is from the Dissect the gas in the dead space, and the aerosol gas reaches the respiratory bronchioles and alveoli after passing through the dead space. The deposition rate of the bronchioles and alveoli needs to maximize the total inspiratory volume. The method of increasing the total inspiratory volume, in addition to exhaling the gas in the lungs as much as possible before inhaling and inhaling as deeply as possible during inhalation, in patients with respiratory diseases such as chronic obstructive pulmonary disease and bronchial asthma, due to the existence of exhalation Restricted, endogenous positive end-expiratory pressure appears, and the use of exogenous positive end-expiratory pressure is also conducive to promoting the full exhalation of lung gas.

After atomization, the airway secretion absorbs the moisture in the aerosol gas and is diluted, and its volume increases, which will increase the breathing work of the patient. In order to remove the diluted airway secretion in time, the vibration of the expiratory phase can be used. Make the airway secretion flow due to the shock, and excrete it from the body by stimulating the airway to produce a cough.

During non-invasive mechanical ventilation, different inspiratory pressure and expiratory pressure are set according to the inspiratory needs of the patient. The pressure level in the non-invasive mechanical ventilation circuit varies from patient to patient. If the exhaust port of the exhalation valve is fixed, The higher the pressure in the pipeline, the greater the amount of air leakage from the pipeline through the exhaust port, which is not conducive to the man-machine synchronization of non-invasive mechanical ventilation. In order to ensure a constant pressure in the non-invasive ventilation circuit pipeline, it is necessary to increase the resistance of the exhaust port accordingly , to ensure that the air leakage through the exhaust port is appropriate.

Regardless of whether it is non-invasive mechanical ventilation or invasive mechanical ventilation, when the patient coughs, the airway pressure will suddenly increase. If the pressure is too high, it will cause lung pressure injury or even pneumothorax. Therefore, in order to avoid adverse reactions caused by excessive airway pressure, a pressure release device is required to release the airway pressure when the airway pressure exceeds a threshold.

In summary, in order to improve the deposition rate of aerosol drugs in the respiratory bronchioles and alveoli, timely remove the diluted secretions that have absorbed the moisture in the aerosol gas out of the body through coughing, in order to ensure that the tubes under different pressures of non-invasive mechanical ventilation The pressure is stable. In order to avoid lung injury caused by excessive airway pressure during mechanical ventilation, an aerosol gas output device that synchronizes inhalation, an appropriate positive pressure at the end of expiration, and a expectoration effect that can produce oscillations in the expiratory phase are required. , It is necessary to ensure a constant air leakage with an adjustable resistance and a breathing valve with a function of releasing excessive pressure.

Still do not possess above-mentioned many functional breathing valves clinically at present.

Contents of the invention

In view of this, the present invention aims at the deficiencies in the prior art, and its main purpose is to provide a multi-functional breathing valve, which can ensure that the aerosol gas is fully inhaled into the lungs, and the aerosol gas is output synchronously and discharged in time during inhalation. Secretion, tube pressure stabilization under different pressure levels of non-invasive mechanical ventilation and avoid lung injury caused by excessive airway pressure during mechanical ventilation.

In order to achieve the above object, the present invention adopts the following technical solutions: a multifunctional breathing valve, including a breathing valve body, a pipeline, and a patient end interface, an aerosol gas connection port, and an exhaust port arranged on the pipeline; A one-way inhalation valve is set in the mist gas connection port; a limit plate is set in the exhaust port, a communication port is set on the limit plate, and an exhalation resistance adjustment device is arranged for the communication port; the exhalation resistance adjustment device includes There are one-way exhalation valve, return spring, and resistance regulator.

As a preferred solution, the pipeline is a transparent pipeline.

Compared with the prior art, the present invention has obvious advantages and beneficial effects. Specifically, it can be seen from the above technical solution that it can ensure that the aerosol gas is fully inhaled into the lungs, and the aerosol gas is output synchronously and discharged in time during inhalation. Secretion, tube pressure stabilization under different pressure levels of non-invasive mechanical ventilation and avoid lung injury caused by excessive airway pressure during mechanical ventilation.

In order to more clearly illustrate the structural features, technical means and the specific objectives and functions achieved by the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

Description of drawings

Fig. 1 is a sectional view under the exhalation state of a preferred embodiment of the present invention;

Fig. 2 is a cross-sectional view of a preferred embodiment of the present invention in an inhalation state.

Explanation of the accompanying drawings:

10. Breathing valve body

20. Pipeline

30. Patient interface

40. Aerosol gas connection port

50. One-way suction valve

60. Exhaust port

70. Limiting plate

80. Exhalation resistance adjustment device

801. One-way exhalation valve

802, return spring.

detailed description

Please refer to Fig. 1 and Fig. 2, which shows the specific structure of a preferred embodiment of the present invention, including a breathing valve body 10, a pipeline 20, and a patient end interface 30 arranged on the pipeline 20, an aerosol gas Connection port 40, exhaust port 60; the aerosol gas connection port 40 is provided with a one-way suction valve 50; the exhaust port 60 is provided with a limiting plate 70, and the limiting plate 70 is provided with a communication port for The communication port is provided with an exhalation resistance adjustment device 80; the exhalation resistance adjustment device 80 includes a one-way exhalation valve 801, a return spring 802, and a resistance regulator (not shown in the figure).

When using it for breathing patients, first fix the aerosol gas device in the aerosol gas connection port 40, and use it by connecting a mouthpiece or a nasal mask at the patient end interface 30.

When the patient end interface 30 exhales, the pipeline 20 generates a certain positive pressure during exhalation, so that the one-way inhalation valve 50 is closed to prevent aerosol gas from entering the pipeline 20. After the pressure in the pipeline 20 rises, the one-way exhalation valve 801 is opened to release the excessive pressure in the pipeline 20; an exhalation resistance regulator 80 is arranged in the exhalation exhaust port 60, and the patient can adjust the appropriate resistance value according to his own condition; , when the positive pressure in the pipeline 20 continues to be higher than the adjustable maximum resistance, the one-way exhalation valve 801 is opened and reset repeatedly and generates shock waves, so that the airway secretions flow due to the shock, and the secretion will be released by stimulating the airway to produce cough The substance is excreted from the body.

In the original state and inhalation state, the return spring 802 is in a state of natural expansion and contraction, and the one-way exhalation valve 801 blocks the communication port of the limiting plate 70 .

At the end of exhalation, the pressure of the pipeline 20 drops. When the patient end interface 30 inhales, the pipeline 20 generates a certain negative pressure, the return spring 802 of the exhalation resistance regulator 80 is not compressed, and the one-way exhalation valve 801 is blocked. Block the communication port of the limiting plate 70 to prevent the aerosol gas from being discharged out of the pipeline 20 through the exhaust port 60; after the negative pressure in the pipeline 20 rises, the one-way suction valve 50 is opened, and the atomized gas generated by the aerosol gas device passes through the gas The mist gas connection port 40 enters the patient's lungs along the inspiratory airflow; the patient can observe the situation of the aerosol gas being inhaled through the transparent tube 20 .

The key points of the design of the present invention are: when the patient exhales, only the one-way exhalation valve is opened, and the one-way inhalation valve is closed to prevent the aerosol gas from entering the pipeline from the aerosol gas connection port; and an exhalation resistance is also provided Adjusting device, when the pipeline pressure continues to be higher than the adjustable maximum resistance, the one-way exhalation valve in the exhalation resistance adjustment device is repeatedly opened and reset to generate shock waves, so that the airway secretions flow due to the shock, by stimulating the airway Produce a cough to expel secretions from the body; when the patient inhales, only the one-way inspiratory valve is opened and the one-way exhalation valve is closed. The one-way exhalation valve blocks the communication port of the limit plate to prevent the passage of aerosol The exhaust port is discharged out of the pipeline; it can ensure that the aerosol gas is fully inhaled into the lungs, the aerosol gas is output synchronously during inhalation, the secretions are discharged in time, the pipeline pressure is stable under different pressure levels of non-invasive mechanical ventilation and avoids Lung injury caused by excessive airway pressure.

The above descriptions are only preferred embodiments of the present invention, and do not limit the technical scope of the present invention in any way, so any minor modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention are still valid. It belongs to the scope of the technical solutions of the present invention.

Claims (2)

1. A multifunctional breathing valve, characterized in that: it includes a breathing valve body, a pipeline, and a patient end interface, an aerosol gas connection port, and an exhaust port arranged on the pipeline; to the inhalation valve; the exhaust port is provided with a limit plate, and the limit plate is provided with a communication port, and an exhalation resistance adjustment device is arranged for the communication port; the exhalation resistance adjustment device includes a one-way exhalation valve, Return spring, and resistance regulator. 2. A multifunctional breathing valve according to claim 1, characterized in that: said pipeline is a transparent pipeline.