CN110404147A - A breathing valve and a breathing device for improving the performance of a dual-pressure ventilator - Google Patents

Abstract

The invention provides a breathing valve and a breathing device for improving the performance of a dual-air pressure ventilator. The breathing valve for improving the performance of a dual-pressure ventilator includes: an inhalation valve cover and an exhalation valve cover that are fastened together, and a diaphragm, which is arranged on the suction The middle of the air valve cover and the exhalation valve cover forms the inhalation valve chamber and the exhalation valve chamber, the inhalation one-way valve is arranged in the inhalation valve chamber, and the inhalation one-way valve seat is arranged in the inhalation one-way valve Behind the valve, the exhalation one-way valve is set between the exhalation interface and the exhalation valve cavity to prevent repeated inhalation. The exhalation valve port is set in the exhalation valve cavity. When the pressure in the exhalation valve cavity is low When in the inhalation valve chamber, the diaphragm moves toward the exhalation valve port, so that the exhalation valve port is closed, and the exhalation one-way valve seat supports the exhalation one-way valve sheet. Because the present invention has a diaphragm, an inhalation one-way valve and an exhalation one-way valve sheet, when inhaling or exhaling is performed, the valve corresponding to inhaling or exhaling in the exhaling valve is opened, and the other valve is closed. , thereby preventing re-inhalation.

Description

A breathing valve and a breathing device for improving the performance of a dual-pressure ventilator

technical field

The invention relates to a breathing valve for improving the performance of a dual-pressure ventilator, and also relates to a breathing device, which belongs to the field of medical equipment.

Background technique

The ventilator mainly solves the problem of ventilation and oxygen inhalation clinically. In recent years, due to its simple structure, convenient use, and low price, dual-pressure ventilators have been widely used in clinics and even in families. The dual-pressure ventilator uses a single tube to connect the ventilator and the nasal mask or mask, which is convenient to connect, but there are also some problems:

1. The exhalation channel is not clear. The leakage of the mask, the joint with the leak, and even the leakage of the edge of the nasal mask and the mask are the discharge channels of exhaled carbon dioxide.

Second, the amount of leakage is uncertain. The inspiratory pressure is set according to the patient's condition. In addition to considering the compliance of the patient's lungs and the demand for the patient's tidal volume, possible repeated inhalation should also be considered. The amount of leakage depends on the airway pressure and the equivalent caliber of the leakage.

3. Due to the above two reasons, the risk of carbon dioxide retention is relatively high during clinical dual-pressure ventilator ventilation. Large leaks can not even establish pressure in the airway, and small leaks can not release carbon dioxide smoothly; clinical experience and dual Doctors with rich experience in the use of air pressure ventilators can only achieve satisfactory results through repeated adjustments.

Fourth, due to the uncertain leakage, adding oxygen into the pipeline has become a difficult point. Improving the inhaled oxygen concentration is the main means of clinical treatment of hypoxia, directly adding it to the connecting pipe, most of the oxygen is discharged to the atmosphere with leakage, and a large amount of oxygen must be wasted to increase the inhaled oxygen concentration. The actual inspired oxygen concentration is related to the leakage volume, and the patient's minute ventilation is related. Uncertain leakage also means uncertain inspired oxygen concentration.

5. Due to the existence of leakage, the air supply flow rate of the dual-pressure ventilator is much greater than the inspiratory flow rate of the patient. In this case, the heating and humidification of the gas has also become one of the problems of the dual pressure ventilator.

The clinical non-dual-pressure ventilator works under the condition of no leakage or very small leakage. The exhaled air has a special exhalation channel, and there is almost no repeated inhalation. The air supply flow of the ventilator is very close to the inhalation flow of the patient. Humidification is easier. However, there are problems that the ventilator is expensive and the operation is complicated.

Contents of the invention

The object of the present invention is to provide a breathing valve and a breathing device for improving the performance of a dual-pressure ventilator, so as to solve the above-mentioned problems.

The present invention adopts following technical scheme:

The invention provides a breathing valve for improving the performance of a dual-pressure ventilator, which is characterized in that it includes: an inhalation valve cover and an exhalation valve cover that are engaged with each other, a diaphragm, and is arranged on the inhalation valve cover and the exhalation valve cover. In the middle, the inner space surrounded by the diaphragm and the suction valve cover is called the suction valve chamber, and the inner space surrounded by the diaphragm and the exhalation valve cover is called the exhalation valve chamber. In the inhalation valve chamber, the inhalation one-way valve seat is arranged behind the inhalation one-way valve, and the exhalation one-way valve plate is arranged between the exhalation interface and the exhalation valve chamber to prevent repeated inhalation. The exhalation valve port is set in the exhalation valve chamber. When the pressure of the exhalation valve chamber is lower than that of the inhalation valve chamber, the diaphragm moves toward the exhalation valve port, so that the exhalation valve port is closed, and the expiratory one-way valve seat , supporting the exhalation one-way valve sheet.

Further, the breathing valve for improving the performance of the dual-pressure ventilator of the present invention may also have such a feature: wherein, the inhalation one-way valve seat also includes: an oxygen supply interface.

Further, the breathing valve for improving the performance of the dual-pressure ventilator of the present invention may also have such a feature, further comprising: an oxygen one-way valve connected to the oxygen supply interface.

Further, the breathing valve for improving the performance of a dual-pressure ventilator of the present invention may also have such a feature, and further include: an outlet for accumulated water, which is arranged on the cover of the exhalation valve.

The present invention also provides a breathing apparatus, comprising the breathing valve as above, and: an inspiratory pipeline, an exhalation pipeline and a Y-shaped joint, wherein one end of the inspiratory pipeline communicates with the inspiratory valve cavity, and the other end communicates with the Y-shaped valve cavity. One end of the exhalation pipeline is connected with the exhalation valve cavity, and the other end is connected with the Y-shaped joint.

Further, the respiratory device of the present invention may also have such a feature, further comprising: a humidifier arranged on the inhalation pipeline.

Further, the breathing apparatus of the present invention may also have such a feature, and further include: a water storage cup arranged on the exhalation pipeline.

Further, the respiratory device of the present invention may also have the following features: a dual-pressure ventilator communicated with the inhalation valve cavity.

Beneficial Effects of the Invention

The breathing valve and breathing device for improving the performance of the dual-pressure ventilator of the present invention, once the dual-pressure ventilator is connected with the breathing valve and the pipeline of the present invention, can achieve the effect of non-invasive ventilation of a large or professional ventilator.

1. There is a special discharge channel for exhaled gas, and the retention of carbon dioxide is not easy to occur.

2. The special discharge channel for exhaled gas can collect the exhaled gas of the patient, especially for patients with respiratory infection who use the ventilator.

3. There is an inspiratory one-way valve in the inspiratory channel, and the exhaled air of the patient cannot flow to the inspiratory channel, so there is no problem of repeated inhalation.

4. There is an exhalation one-way valve in the exhalation channel, it is impossible for the patient to repeatedly inhale and exhale air, and at the same time, the sensitivity of the synchronous trigger is improved. Because all of the patient's inspiratory effort is transmitted to the ventilator through the inspiratory tube, not part of it.

5. Oxygen can be input at the breathing valve, because there is little or no leakage, and the consumption and waste of oxygen are small. Oxygen concentration is also easy to calculate and control.

6. Oxygen flow also has the function of basic flow, which can improve ventilation efficiency.

7. Since the flow rate flowing through the pipeline is close to the minute ventilation of the patient, the effect of warming and humidifying the inhaled gas after being connected to the humidifier is significantly higher than that of the dual-pressure ventilator.

Description of drawings

Figure 1 is an exploded view of a breathing valve that improves the performance of a dual-pressure ventilator;

Figure 2 is an exploded view of a breathing valve that improves the performance of a dual-pressure ventilator from another perspective;

Fig. 3 is the sectional view of diaphragm;

Fig. 4 is a schematic structural view of the suction valve cover;

Fig. 5 is a structural schematic diagram of an exhalation valve cover;

Fig. 6 is a schematic structural view of the breathing apparatus.

Detailed ways

The specific implementation manners of the present invention will be described below in conjunction with the accompanying drawings.

<Example 1>

As shown in Figure 1 and Figure 2, the breathing valve to improve the performance of a dual-pressure ventilator includes: an inhalation valve cover 1, an exhalation valve cover 9, a diaphragm 5, an inhalation one-way valve 3, and an inhalation one-way valve seat 4. Exhalation valve port 6, exhalation one-way valve sheet 7 and exhalation one-way valve seat 8.

The inhalation valve cover 1 and the exhalation valve cover 9 are fastened together.

The inspiratory valve cover 1 has a ventilator interface 21 for connecting a dual air pressure ventilator. The inhalation valve cover 1 also has an oxygenation interface 10 from which oxygenation can be performed.

As shown in Figure 5, the inhalation valve cover 1 has an inhalation pipeline interface 13, which can be connected to the pipeline from the patient; for long-term stable performance, a water discharge outlet is arranged. Patient exhaled air can be collected at the exhaust port.

Diaphragm 5 is set between the suction valve cover 1 and the exhalation valve cover 9. The internal space surrounded by the diaphragm 5 and the suction valve cover 1 is called the suction valve cavity. The diaphragm 5 and the exhalation valve cover The internal space surrounded by 9 is called the exhalation valve cavity.

The diaphragm 5 is elastic and includes: a valve plate 51 , a diaphragm body 52 , a fixed edge 53 and a flexible edge 54 . The diaphragm body 52 is circular, the valve plate 51 is disposed at the center of the diaphragm body 52 , and the flexible edge 54 surrounds the diaphragm body 52 for a week. The fixed edge 53 clamps the fixed edge 53 when the inspiratory valve cover 1 and the exhalation valve cover 9 are engaged with each other, thereby fixing the diaphragm 5 .

Inhalation one-way valve 3 prevents the patient's exhaled gas from entering the inhalation pipeline, and is arranged in the inhalation valve cavity.

The suction one-way valve seat 4 is arranged behind the suction one-way valve 3 .

The exhalation valve port 6 is arranged in the exhalation valve cavity.

The exhalation one-way valve sheet 7 is arranged behind the exhalation valve port 6 .

When the pressure in the exhalation valve chamber is lower than that in the inhalation valve chamber, the diaphragm 5 moves toward the exhalation valve port 6 to close the exhalation valve port 6 . The exhalation one-way valve sheet 7 is the passage for the patient to exhale. The synchronous trigger sensitivity can also be improved, and at the same time, the patient will not re-inhale the exhaled gas from the exhalation tube when inhaling.

The exhalation one-way valve seat 8 supports the exhalation one-way valve sheet 7. The exhalation valve port 6 passes through the central hole of the exhalation one-way valve sheet 7 and the exhalation one-way valve seat 8 . Other implementations may use other types of check valves.

The oxygen one-way valve 2 is connected with the oxygen supply interface 10 . Prevents leaks when oxygen is not connected. In other embodiments, a plug may also be added to the oxygenation interface 10 to prevent leakage.

The accumulated water discharge port 11 is arranged on the exhalation valve cover 9 .

The exhalation pipeline interface 14 is arranged on the exhalation valve cover 9 . For connection of exhalation tubing from patient direction.

The exhalation port 12 is arranged on the exhalation valve cover 9 .

When inhaling, the gas enters from the ventilator, then enters the inhalation valve chamber through the inhalation one-way valve 3 and the inhalation one-way valve seat 4, and then enters the inhalation pipeline 19 from the inhalation pipeline interface 13 middle. At this time, the pressure in the inhalation valve chamber is greater than the pressure in the exhalation valve chamber, and the diaphragm moves toward the exhalation valve port 6 to close the exhalation valve. When exhaling, the pressure provided by the dual-pressure ventilator drops, so that the pressure of the inspiratory valve chamber is lower than that of the exhalation valve chamber, the exhalation valve opens, and the exhaled gas enters the exhalation valve chamber from the exhalation pipeline interface 14, and then Pass through the exhalation one-way valve seat 8 and the exhalation one-way valve sheet 7 into the exhalation port 12 to be discharged. At this time, the inspiratory one-way valve 3 is in a closed state under the effect of air pressure, thereby preventing the patient's exhaled air from entering the inspiratory pipeline.

<Example 2>

This embodiment provides a breathing apparatus, including the breathing valve as described in Embodiment 1.

As shown in FIG. 6 , the breathing apparatus further includes: an inspiratory pipeline 19 , an exhalation pipeline 16 and a Y-shaped joint 20 .

One end of the suction pipeline 19 communicates with the suction pipeline interface 13 of the breathing valve, and the other end communicates with the Y-shaped joint 20 .

One end of the exhalation pipeline 16 communicates with the exhalation pipeline interface 14 of the breathing valve, and the other end communicates with the Y-shaped joint 20 .

The humidifier 17 is arranged on the suction line 19 . Humidifies the air passing through it.

The first water storage cup 18 is arranged on the suction pipeline 19 .

The second water accumulation cup 22 is arranged on the exhalation pipeline to reduce the accumulation of water at the discharge outlet 11 of the accumulation of water.

The dual air pressure ventilator 15 communicates with the ventilator interface 21 on the inhalation valve cover 1 .

Claims (8)

1. A breathing valve improving the performance of a dual-pressure ventilator, characterized in that it comprises: Interlocking inspiratory and exhalation valve caps, The diaphragm is set in the middle of the suction valve cover and the exhalation valve cover. The internal space surrounded by the diaphragm and the suction valve cover is called the suction valve chamber, and the internal space surrounded by the diaphragm and the exhalation valve cover called the exhalation valve chamber, suction one-way valve, set in the suction valve chamber, the suction one-way valve seat is arranged behind the suction one-way valve, The exhalation one-way valve is set between the exhalation interface and the exhalation valve chamber to prevent repeated inhalation, The exhalation valve port is set in the exhalation valve chamber. When the pressure of the exhalation valve chamber is lower than that of the inhalation valve chamber, the diaphragm moves toward the exhalation valve port to close the exhalation valve port. The exhalation one-way valve seat supports the exhalation one-way valve sheet. 2. The breathing valve improving the performance of a dual-pressure ventilator as claimed in claim 1, characterized in that: Wherein, the inhalation one-way valve seat further includes: an oxygen addition interface. 3. The breathing valve improving the performance of a dual-pressure ventilator as claimed in claim 2, further comprising: An oxygen one-way valve is connected with the oxygen addition interface. 4. The breathing valve improving the performance of a dual-pressure ventilator as claimed in claim 1, further comprising: The accumulated water outlet is arranged on the exhalation valve cover. 5. A breathing apparatus comprising the breathing valve of claim 1, and: Inspiratory pipeline, expiratory pipeline and Y-joint, Wherein, one end of the suction pipeline communicates with the suction valve cavity, and the other end communicates with the Y-shaped joint, One end of the exhalation pipeline communicates with the exhalation valve cavity, and the other end directly communicates with the Y-shaped joint or communicates with the Y-shaped joint through a humidifier. 6. The breathing apparatus of claim 5, wherein: Wherein, the humidifier is arranged on the suction pipeline. 7. The breathing apparatus of claim 5, further comprising: The water accumulation cup is arranged on the exhalation pipeline. 8. The breathing apparatus of claim 5, further comprising: The double air pressure ventilator communicates with the inspiratory valve cavity.