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

Abstract

The present invention provides a breathing valve and a breathing device for improving the performance of a dual-pressure breathing machine. The breathing valve for improving the performance of a dual-pressure breathing machine includes: an inhalation valve cover and an exhalation valve cover that are interlocked, a diaphragm that is arranged between the inhalation valve cover and the exhalation valve cover to form an inhalation valve cavity and an exhalation valve cavity, an inhalation check valve that is arranged in the inhalation valve cavity, an inhalation check valve seat that is arranged behind the inhalation check valve, an exhalation check valve sheet that is arranged between the exhalation interface and the exhalation valve cavity to prevent repeated inhalation, an exhalation valve port that is arranged in the exhalation valve cavity, when the exhalation valve cavity pressure is lower than the inhalation valve cavity, the diaphragm moves toward the exhalation valve port to close the exhalation valve port, and the exhalation check valve seat supports the exhalation check valve sheet. Due to the diaphragm, the inhalation check valve and the exhalation check valve sheet, when the inhalation or exhalation action is performed, the valve corresponding to the inhalation or exhalation in the breathing valve is opened, and the other valve is closed, thereby preventing repeated inhalation.

Description

Technical Field

[0001] The invention relates to a breathing valve for improving the performance of a dual-pressure ventilator. The invention also relates to a breathing device, belonging to the field of medical equipment. Background Art

[0002] The main function of a ventilator in clinical practice is to solve ventilation and oxygen inhalation problems. In recent years, dual-pressure ventilators have been widely used in clinics and even at home due to their simple structure, ease of use, and low price. Dual-pressure ventilators use a single tube to connect the ventilator and a nasal mask or a face mask, which is easy to connect, but there are also some problems:

[0003] 1. The exhalation channel is not clear. The leaking port of the mask, the connector with a leaking port, and even the leaking edges of the nasal mask and the mask are all discharge channels for exhaled carbon dioxide.

[0004] 2. Uncertain leakage. The inspiratory pressure is set according to the patient's condition. In addition to considering the patient's lung compliance and the patient's tidal volume requirements, possible repeated inhalation must also be considered. The leakage depends on the airway pressure and the equivalent caliber of the leakage.

[0005] 3. Due to the above two reasons, in clinical practice, the risk of carbon dioxide retention is relatively high during dual-pressure ventilation. Large leakage may not even lead to the establishment of pressure in the airway, and small leakage may result in poor carbon dioxide discharge. Doctors with rich clinical experience and experience in using dual-pressure ventilators need to make multiple adjustments to achieve satisfactory results.

[0006] Fourth, due to the uncertainty of the leakage, adding oxygen in the pipeline becomes difficult. Increasing the concentration of inspired oxygen is the main means of clinical treatment of hypoxia. Most of the oxygen is discharged into the atmosphere with the leakage. A large amount of oxygen must be wasted to increase the concentration of inspired oxygen. The actual inspired oxygen concentration is related to the leakage and the patient's minute ventilation. Uncertain leakage also means uncertain inspired oxygen concentration.

[0007] 5. Due to leakage, the air supply flow of the dual-pressure ventilator is much greater than the patient's inspiratory flow. In this case, the heating and humidification of the gas also becomes one of the problems of the dual-pressure ventilator.

[0008] Clinical non-bi-pressure ventilators work under the condition of no leakage or very small leakage. There is a special exhalation channel for exhaled air, and there is almost no repeated inhalation. The air supply flow of the ventilator is very close to the patient's inhalation flow, and heating and humidification are relatively easy. However, there are problems such as high price and complicated operation of ventilators. Summary of the invention

[0009] The purpose of the present invention is to provide a breathing valve and a breathing device thereof for improving the performance of a dual-pressure breathing machine, so as to solve the above-mentioned problems.

[0010] The present invention adopts the following technical solutions:

[0011] The present invention provides a breathing valve for improving the performance of a dual-pressure ventilator, characterized in that it comprises: an inhalation valve cover and an exhalation valve cover that are interlocked, a diaphragm that is arranged between the inhalation valve cover and the exhalation valve cover, an internal space enclosed by the diaphragm and the inhalation valve cover is called an inhalation valve cavity, an internal space enclosed by the diaphragm and the exhalation valve cover is called an exhalation valve cavity, an inhalation check valve that is arranged in the inhalation valve cavity, an inhalation check valve seat that is arranged behind the inhalation check valve, an exhalation check valve sheet that is arranged between an exhalation interface and the exhalation valve cavity to prevent repeated inhalation, an exhalation valve port that is arranged in the exhalation valve cavity, when the pressure in the exhalation valve cavity is lower than that in the inhalation valve cavity, the diaphragm moves toward the exhalation valve port to close the exhalation valve port, and the exhalation check valve seat supports the exhalation check valve sheet.

[0012] Furthermore, the breathing valve for improving the performance of a dual-pressure ventilator of the present invention may also have the following characteristics: wherein the inhalation one-way valve seat also includes: an oxygen supply interface.

[0013] Furthermore, the breathing valve for improving the performance of a dual-pressure ventilator of the present invention may also have the following characteristics, and further include: an oxygen one-way valve connected to the oxygen supply interface.

[0014] Furthermore, the breathing valve for improving the performance of a dual-pressure ventilator of the present invention may also have the following characteristics, and further include: a water discharge port, which is arranged on the exhalation valve cover.

[0015] The present invention also provides a breathing device, comprising the breathing valve as above, and: an inhalation pipeline, an exhalation pipeline and a Y-type connector, wherein one end of the inhalation pipeline is connected to the inhalation valve cavity, and the other end is connected to the Y-type connector, and one end of the exhalation pipeline is connected to the exhalation valve cavity, and the other end is connected to the Y-type connector.

[0016] Furthermore, the breathing apparatus of the present invention may also have the following characteristics: a humidifier is arranged on the inhalation duct.

[0017] Furthermore, the breathing apparatus of the present invention may also have the following characteristics: a water storage cup is arranged on the exhalation duct.

[0018] Furthermore, the breathing apparatus of the present invention may also have the following features: a dual-pressure ventilator communicates with the inhalation valve chamber.

[0019] Advantageous Effects of the Invention

[0020] The breathing valve and breathing device of the present invention improve the performance of a dual-pressure ventilator. Once the dual-pressure ventilator is connected to the breathing valve and pipeline of the present invention, the non-invasive ventilation effect of a large or professional ventilator can be achieved.

[0021] 1. Exhaled gas has a special discharge channel, and carbon dioxide is not easily retained.

[0022] 2. The dedicated exhaust channel for exhaled gas can collect the patient's exhaled gas, especially for patients with respiratory infections using ventilators.

[0023] 3. There is an inhalation one-way valve in the inhalation channel, and the patient's exhaled air cannot flow into the inhalation pipe, so there is no problem of repeated inhalation.

[0024] 4. There is an exhalation check valve in the exhalation channel, so the patient cannot inhale and exhale repeatedly, and the synchronization trigger sensitivity is also improved. Because the patient's inhalation effort is transmitted to the ventilator through the inhalation pipeline, not part of it.

[0025] 5. Oxygen can be input at the breathing valve, because there is little or no leakage, oxygen consumption and waste are small. Oxygen concentration is also easy to calculate and control.

[0026] 6. Oxygen flow also has the function of basic flow, which can improve ventilation efficiency.

[0027] 7. Since the flow rate through the pipeline is close to the patient's minute ventilation, the effect of heating and humidifying the inhaled gas after connecting to the humidifier is significantly improved compared with the dual-pressure ventilator. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is an exploded view of the breathing valve that improves the performance of the bi-pressure ventilator;

[0029] Figure 2 This is an exploded view of the breathing valve that improves the performance of the bi-pressure ventilator from another perspective;

[0030] Figure 3 is a cross-sectional view of the diaphragm;

[0031] Figure 4 It is a schematic diagram of the structure of the suction valve cover;

[0032] Figure 5 It is a structural schematic diagram of the exhalation valve cover;

[0033] Figure 6 It is a structural diagram of a breathing apparatus. DETAILED DESCRIPTION

[0034] The specific implementation of the present invention is described below with reference to the accompanying drawings.

[0035] <Example 1>

[0036] like Figure 1 and Figure 2 As shown, the breathing valve for improving the performance of the dual-pressure ventilator includes: an inhalation valve cover 1, an exhalation valve cover 9, a diaphragm 5, an inhalation check valve 3, an inhalation check valve seat 4, an exhalation valve port 6, an exhalation check valve sheet 7 and an exhalation check valve seat 8.

[0037] The inhalation valve cover 1 and the exhalation valve cover 9 are buckled with each other.

[0038] The inhalation valve cover 1 has a ventilator interface 21 for connecting a dual-pressure ventilator. The inhalation valve cover 1 also has an oxygenation interface 10, from which oxygenation can be performed.

[0039] like Figure 5 As shown, 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 port is arranged. The patient's exhaled air can be collected at the exhaust port.

[0040] The diaphragm 5 is arranged between the inhalation valve cover 1 and the exhalation valve cover 9. The internal space enclosed by the diaphragm 5 and the inhalation valve cover 1 is called the inhalation valve cavity, and the internal space enclosed by the diaphragm 5 and the exhalation valve cover 9 is called the exhalation valve cavity.

[0041] The diaphragm 5 is elastic and includes: a valve sheet 51, a diaphragm body 52, a fixed edge 53, and a flexible edge 54. The diaphragm body 52 is circular, the valve sheet 51 is arranged in the center of the diaphragm body 52, and the flexible edge 54 surrounds the diaphragm body 52. ​​The fixed edge 53 is clamped when the inhalation valve cover 1 and the exhalation valve cover 9 are buckled together, thereby fixing the diaphragm 5.

[0042] The inhalation one-way valve 3 prevents the patient's exhaled air from entering the inhalation duct and is arranged in the inhalation valve cavity.

[0043] The air intake check valve seat 4 is arranged behind the air intake check valve 3 .

[0044] The exhalation valve port 6 is arranged in the exhalation valve cavity.

[0045] The exhalation one-way valve plate 7 is arranged behind the exhalation valve port 6 .

[0046] When the pressure in the exhalation valve cavity is lower than that in the inhalation valve cavity, the diaphragm 5 moves toward the exhalation valve port 6 to close the exhalation valve port 6. The exhalation one-way valve plate 7 is the passage for the patient to exhale. It can also improve the sensitivity of the synchronous trigger, and the patient will not re-inhale the exhaled gas from the exhalation pipe when inhaling.

[0047] The exhalation check valve seat 8 supports the exhalation check valve sheet 7. The exhalation valve port 6 passes through the central hole of the exhalation check valve sheet 7 and the exhalation check valve seat 8. Other types of check valves can be used in other implementations.

[0048] The oxygen check valve 2 is connected to the oxygen supply interface 10 to prevent leakage when oxygen is not connected. In other embodiments, a plug can also be added to the oxygen supply interface 10 to prevent leakage.

[0049] The accumulated water discharge port 11 is arranged on the exhalation valve cover 9 .

[0050] The exhalation pipe interface 14 is arranged on the exhalation valve cover 9 and is used to connect the exhalation pipe from the patient's direction.

[0051] The exhalation port 12 is provided on the exhalation valve cover 9 .

[0052] When inhaling, gas enters from the ventilator, then enters the inhalation valve cavity through the inhalation check valve 3 and the inhalation check valve seat 4, and then enters the inhalation pipeline 19 from the inhalation pipeline interface 13. At this time, the pressure in the inhalation valve cavity is greater than the pressure in the exhalation valve cavity, and the diaphragm moves toward the exhalation valve port 6 and closes the exhalation valve. When exhaling, the pressure provided by the dual-pressure ventilator decreases, so that the pressure in the inhalation valve cavity is lower than that in the exhalation valve cavity, the exhalation valve opens, and the exhaled gas enters the exhalation valve cavity from the exhalation pipeline interface 14, and then enters the exhalation port 12 through the exhalation check valve seat 8 and the exhalation check valve sheet 7 and is discharged. At this time, the inhalation check valve 3 is in a closed state under the action of air pressure, thereby preventing the patient's exhaled gas from entering the inhalation pipeline.

[0053] <Example 2>

[0054] This embodiment provides a breathing device, including the breathing valve described in the first embodiment.

[0055] like Figure 6 As shown, the breathing apparatus further includes: an inhalation circuit 19 , an exhalation circuit 16 and a Y-type connector 20 .

[0056] One end of the air intake pipeline 19 is connected to the air intake pipeline interface 13 of the breathing valve, and the other end is connected to the Y-type connector 20.

[0057] One end of the exhalation line 16 is connected to the exhalation pipeline interface 14 of the breathing valve, and the other end is connected to the Y-type connector 20.

[0058] The humidifier 17 is arranged on the air intake pipe 19 to humidify the gas flowing through the pipe.

[0059] The first water storage cup 18 is arranged on the air intake pipeline 19 .

[0060] The second water accumulation cup 22 is arranged on the exhalation duct to reduce the water accumulation at the water discharge port 11 .

[0061] The dual-pressure ventilator 15 is communicated with the ventilator interface 21 on the inhalation valve cover 1 .

Claims

1. A breathing valve for improving the performance of a dual-pressure breathing machine, characterized in that: include: The inhalation valve cover and the exhalation valve cover snap together. The diaphragm is arranged between the inhalation valve cover and the exhalation valve cover. The internal space enclosed by the diaphragm and the inhalation valve cover is called the inhalation valve cavity, and the internal space enclosed by the diaphragm and the exhalation valve cover is called the exhalation valve cavity. The inhalation valve cover has a ventilator interface for connecting a dual-pressure ventilator. The inhalation valve cover also has an oxygen supply interface for oxygen supply. The inhalation valve cover has an inhalation pipeline interface for connecting the inhalation pipeline from the patient. The suction check valve is arranged in the suction valve chamber. The air intake check valve seat is arranged behind the air intake check valve. An oxygen one-way valve is connected to the oxygen supply interface. The water discharge port is arranged on the exhalation valve cover. The exhalation valve port is arranged in the exhalation valve cavity. When inhaling, the pressure in the exhalation valve cavity is lower than that in the inhalation valve cavity, and the diaphragm moves toward the exhalation valve port, so that the exhalation valve port is closed. The exhalation one-way valve is set behind the exhalation valve port. An exhalation one-way valve seat supports the exhalation one-way valve sheet, The exhalation pipe interface is arranged on the exhalation valve cover and is used for connecting the exhalation pipe from the patient's direction.

2. A breathing device comprising the breathing valve according to claim 1, and: Inspiratory tube, expiratory tube and Y-type connector, in, One end of the air intake pipeline is connected to the air intake valve cavity, and the other end is connected to the Y-type connector. One end of the exhalation pipeline is connected to the exhalation valve cavity, and the other end is directly connected to the Y-type connector.

3. A breathing apparatus as claimed in claim 2, characterized in that: in, The humidifier is arranged on the air intake pipe.

4. The breathing apparatus according to claim 2, characterized in that Also features: The water collection cup is set on the exhalation pipeline.

5. The breathing apparatus according to claim 2, characterized in that Also features: A dual-pressure ventilator is communicated with the inhalation valve cavity.

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