Air path system of ventilation treatment equipment

Abstract

The utility model discloses an air path system of ventilation treatment equipment, and belongs to the field of breathing machines. Comprising an oxygen mixing assembly, an oxygen concentration sensor, a first pressure sensor, a second pressure sensor, an external pipeline port, a near-end port and a ventilation control gas path, the oxygen mixing assembly is connected with the oxygen concentration sensors, the first pressure sensor is connected to the oxygen mixing assembly and used for detecting the mixing pressure of oxygen flowing out of the oxygen mixing assembly and air, and the oxygen concentration sensors are connected to the two ends of the draught fan correspondingly. The oxygen concentration sensor is used for detecting the concentration of oxygen in mixed gas formed by mixing oxygen flowing out of the oxygen mixing assembly and air; the near-end port is connected with the second pressure sensor through a first connecting pipe, the ventilation control air path is connected to the first connecting pipe, the near-end port is used for being connected with the air outlet end of the breathing mask, and the ventilation control air path is used for cleaning condensate and water vapor in the first connecting pipe between the near-end port and the second pressure sensor.

Description

Technical Field

[0001] The present application belongs to the field of ventilators, and specifically relates to an air circuit system of a ventilation therapy device. Background Art

[0002] With the advancement of medical technology and the development of science and technology, ventilators have become an indispensable device for the treatment of critically ill patients. Usually, the ventilator is designed with a proximal port connected to the breathing mask worn by the patient and an external pipeline port. Gas flows into the breathing mask through the external pipeline port, so that the proximal port collects the pressure of the patient's exhaled gas. Among them, the proximal port is connected to a pipeline, and a pressure sensor is arranged on the pipeline. After the proximal port is connected to the breathing mask, the patient's exhaled gas can flow into the pipeline through the proximal port, so that the pressure sensor can detect the pressure. However, the patient's exhaled gas may condense in the pipeline to form condensed water, that is, condensate and water vapor are formed in the pipeline, which may block the pipeline, resulting in a large deviation in the pressure sensor detection, or the pressure sensor fails, so that the pressure of the patient's exhaled gas cannot be accurately known. Utility Model Content

[0003] The purpose of the embodiments of the present application is to provide an air circuit system for a ventilation therapy device, which at least solves the problem of being unable to accurately know the pressure of the patient's exhaled gas.

[0004] The embodiment of the present application provides an air circuit system of a ventilation therapy device, the air circuit system of the ventilation therapy device comprising: an oxygen mixing component, an oxygen concentration sensor, a first pressure sensor, a second pressure sensor, an external pipe port, a proximal port, and a ventilation control air circuit;

[0005] The oxygen mixing component is connected to the oxygen concentration sensor, the first pressure sensor is connected to the oxygen concentration sensor, the first pressure sensor is used to detect the mixed pressure of the oxygen and air flowing out of the oxygen mixing component, the oxygen concentration sensors are respectively connected to the two ends of the fan, and the oxygen concentration sensors are used to detect the concentration of oxygen in the mixed gas of the oxygen and air flowing out of the oxygen mixing component;

[0006] The proximal port is connected to the second pressure sensor via a first connecting tube, the ventilation control air circuit is connected to the first connecting tube, the proximal port is used to connect to the air outlet of the breathing mask, and the ventilation control air circuit is used to clear condensate and water vapor in the first connecting tube between the proximal port and the second pressure sensor.

[0007] Optionally, the oxygen mixing component includes an oxygen mixing chamber and a fan;

[0008] The fan is located outside the oxygen mixing chamber, and a first end of the fan is connected to an air outlet of the oxygen mixing chamber, and the first pressure sensor is connected to a second end of the fan;

[0009] Alternatively, the fan is located inside the oxygen mixing chamber, and the first pressure sensor is connected to the air outlet of the oxygen mixing chamber.

[0010] Optionally, the oxygen concentration sensor is respectively connected to two ends of the fan, or the oxygen concentration sensor is connected to the second end of the fan.

[0011] Optionally, the ventilation control air circuit includes a first ventilation control tube and a first ventilation control component disposed in the first ventilation control tube;

[0012] The first pressure sensor is connected to a first pressure detection tube, and the first pressure detection tube is connected between the second end of the fan and an external pipe port;

[0013] The first end of the first ventilation control tube is connected to the first pressure detection tube, and the second end of the first ventilation control tube is connected to the first connecting tube. The gas in the first pressure detection tube flows into the first ventilation control tube and flows through the first ventilation control component to flow into the first connecting tube. The first ventilation control component is used to reduce the flow rate of the gas flowing through the first ventilation control component, and the gas flowing through the first ventilation control component flows into the first pressure detection tube.

[0014] Optionally, the ventilation control air circuit includes a second ventilation control tube and a second ventilation control component disposed in the second ventilation control tube;

[0015] In the case where the oxygen concentration sensor is respectively connected to both ends of the fan, the first end of the oxygen concentration sensor is connected to a first detection tube, the second end of the oxygen concentration sensor is connected to a second detection tube, the first detection tube is connected to the first end of the fan, and the second detection tube is connected to the second end of the fan;

[0016] The first end of the second ventilation control tube is connected to the first detection tube or the second detection tube, and the second end of the second ventilation control tube is connected to the first connecting tube. The gas in the first detection tube or the second detection tube flows into the second ventilation control tube and flows through the second ventilation control component to flow into the first connecting tube. The second ventilation control component is used to reduce the flow rate of the gas flowing through the second ventilation control component, and the gas flowing through the second ventilation control component flows into the first connecting tube.

[0017] Optionally, the air circuit system of the ventilation therapy device further includes a decompression control module, and the ventilation control air circuit includes a third ventilation control tube and a third ventilation control component disposed in the third ventilation control tube;

[0018] The pressure reduction control module is connected to the oxygen mixing chamber through a second connecting pipe, the third ventilation control pipe is connected to the second connecting pipe, and the second end of the third ventilation control pipe is connected to the first connecting pipe. The gas in the second connecting pipe flows into the third ventilation control pipe and flows through the third ventilation control assembly to flow into the first connecting pipe. The third ventilation control assembly is used to reduce the flow rate of the gas flowing through the third ventilation control assembly, and the gas flowing through the third ventilation control assembly flows into the first connecting pipe.

[0019] Optionally, the air circuit system of the ventilation therapy device further includes a decompression control module, and the ventilation control air circuit includes a fourth ventilation control tube and a fourth ventilation control component disposed in the fourth ventilation control tube;

[0020] The decompression control module is connected to the oxygen mixing chamber through a second connecting pipe, the fourth ventilation control pipe is connected to the second connecting pipe, the second end of the fourth ventilation control pipe is connected to the first connecting pipe, and the gas in the second connecting pipe flows into the fourth ventilation control pipe;

[0021] When the fourth ventilation control assembly is turned on, the gas flowing from the second connecting pipe into the fourth ventilation control pipe flows through the fourth ventilation control assembly to flow into the first connecting pipe.

[0022] Optionally, the air circuit system of the ventilation therapy device further includes an atomization control component and an atomization port;

[0023] The first end of the atomization control assembly is in communication with the second connecting pipe, and the second end of the atomization control assembly is connected to the atomization port;

[0024] When the atomization control assembly is turned on, the gas flowing through the pressure reduction control module flows to the atomization control assembly, and flows to the atomization port through the atomization control assembly.

[0025] Optionally, the air circuit system of the ventilation therapy device further includes an oxygen port, an air port, an external pipe port, a first filter element, a second filter element and a third filter element;

[0026] The oxygen port is connected to the first filter element, the first filter element is connected to the oxygen mixing component, and the first filter element is used to filter out impurities in the oxygen entering through the oxygen port;

[0027] The air port is connected to the second filter element, and the second filter element is used to filter out impurities in the air entering through the air port;

[0028] The external pipe port is connected to the oxygen mixing component, the third filter element is connected between the oxygen mixing component and the external pipe port, and the third filter element is used to filter out impurities in the gas flowing into the external pipe port.

[0029] Optionally, the air circuit system of the ventilation therapy device also includes an oxygen proportional valve and a pressure reduction control module, the oxygen proportional valve is connected between the pressure reduction control module and the oxygen mixing component, and the oxygen proportional valve is used to adjust the flow of oxygen entering the oxygen mixing component.

[0030] Optionally, the air circuit system of the ventilation therapy device further includes a first flow meter and a second flow meter;

[0031] The first flow meter is connected between the oxygen proportion valve and the oxygen mixing component, and the first flow meter is used to detect the flow rate of oxygen entering the oxygen mixing component;

[0032] The second flow meter is connected between the first pressure sensor and the external pipe port, and the second flow meter is used to detect the flow of the gas flowing into the external pipe port.

[0033] Optionally, the ventilator also includes a third pressure sensor and a fourth pressure sensor;

[0034] The third pressure sensor is connected between the oxygen port and the pressure reduction control module, and the third pressure sensor is used to detect the pressure of the oxygen flowing in from the oxygen port;

[0035] The fourth pressure sensor is connected between the air port and the oxygen mixing component, and is used to detect the pressure of the air flowing in from the air port.

[0036] Optionally, the first ventilation control component includes any one of an air resistor and a solenoid valve.

[0037] In the embodiment of the present application, since the oxygen mixing component is connected to the oxygen concentration sensor and the first pressure sensor is connected to the oxygen concentration sensor, the pressure of the gas flowing out of the oxygen mixing component can be detected in real time by the first pressure sensor, so that the pressure of the gas flowing out of the oxygen mixing component can be known in real time, and the oxygen concentration sensor can detect the concentration of oxygen in the mixed gas of oxygen and air flowing out of the oxygen mixing component in real time, so that the oxygen concentration in the mixed gas of oxygen and air flowing out of the oxygen mixing component can be known in real time, and then the amount of oxygen entering the oxygen mixing component can be adjusted so that the oxygen concentration in the gas flowing out of the oxygen mixing component meets the requirements. Since the proximal port is connected to the second pressure sensor through the first connecting tube, and the ventilation control air circuit is connected to the first connecting tube, the proximal port can be connected to the air outlet end of the breathing mask, so that after the patient wears the breathing mask, the gas exhaled by the patient can flow to the first connecting tube through the proximal port, so that the second pressure sensor can detect the pressure of the gas in the first connecting tube, thereby determining the pressure of the gas exhaled by the patient, and the ventilation control air circuit can clear the condensate and water vapor in the first connecting tube, that is, to prevent the gas exhaled by the patient from entering the first connecting tube and condensing in the first connecting tube to form condensate and water vapor, which may block the first connecting tube, resulting in detection deviation of the second pressure sensor or failure of the second pressure sensor. That is, in the embodiment of the present application, a ventilation control air circuit is provided, and the ventilation control air circuit is connected to the first connecting tube between the proximal port and the second pressure sensor, so that the proximal port is connected to the breathing mask. After the patient wears the breathing mask, once the gas exhaled by the patient enters the first connecting tube, the ventilation control air circuit can clear the condensate and water vapor in the first connecting tube, so that the first connecting tube is unobstructed, and the condensate and water vapor are prevented from clogging the first connecting tube, resulting in deviations in the detection of the second pressure sensor, or failure of the second pressure sensor. That is, when using the air circuit system of the ventilation therapy device provided in the embodiment of the present application, the pressure of the gas exhaled by the patient can be determined more accurately. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 One of the schematic diagrams showing an air circuit system of a ventilation therapy device provided in an embodiment of the present application;

[0039] Figure 2 A second schematic diagram showing an air circuit system of a ventilation therapy device provided in an embodiment of the present application;

[0040] Figure 3 A third schematic diagram showing an air circuit system of a ventilation therapy device provided in an embodiment of the present application;

[0041] Figure 4 A fourth schematic diagram showing an air circuit system of a ventilation treatment device provided in an embodiment of the present application;

[0042] Figure 5 A fourth schematic diagram showing an air circuit system of a ventilation treatment device provided in an embodiment of the present application;

[0043] Figure 6 A fourth schematic diagram showing an air circuit system of a ventilation treatment device provided in an embodiment of the present application;

[0044] Figure 7 A fourth schematic diagram showing an air circuit system of a ventilation therapy device provided in an embodiment of the present application.

[0045] Reference numerals:

[0046] 100: oxygen port; 200: air port; 300: external pipeline port; 400: proximal port; 500: atomization port; 10: pressure reduction control module; 11: second connecting pipe; 20: mixed oxygen chamber; 30: fan; 40: oxygen concentration sensor; 41: first detection tube; 42: second detection tube; 401: first connecting tube; 50: first pressure sensor; 51: first pressure detection tube; 60: second pressure sensor; 70: ventilation control air circuit; 71: first ventilation control tube; 72: second A ventilation control assembly; 73: a second ventilation control tube; 74: a second ventilation control assembly; 75: a third ventilation control tube; 76: a third ventilation control assembly; 77: a fourth ventilation control tube; 78: a fourth ventilation control assembly; 80: an atomization control assembly; 90: a first filter element; 110: a second filter element; 120: a third filter element; 130: an oxygen proportioning valve; 140: a first flow meter; 150: a second flow meter; 160: a third pressure sensor; 170: a fourth pressure sensor; 210: an oxygen mixing assembly. DETAILED DESCRIPTION

[0047] The term "first" or "second" in the specification and claims of this application may include one or more of the features explicitly or implicitly. In the description of this application, unless otherwise specified, "plurality" means two or more. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / " generally means that the objects connected before and after are in an "or" relationship.

[0048] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0049] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0050] like Figures 1 to 7 As shown, the air circuit system of the ventilation therapy device includes: an oxygen mixing component 210, an oxygen concentration sensor 40, a first pressure sensor 50, a second pressure sensor 60, an external pipe port 300, a proximal port 400 and a ventilation control air circuit 70.

[0051] The oxygen mixing component 210 is connected to the oxygen concentration sensor 40, and the first pressure sensor 50 is connected to the oxygen concentration sensor 40. The first pressure sensor 50 is used to detect the mixed pressure of the oxygen and air flowing out of the oxygen mixing component 210, and the oxygen concentration sensor 40 is used to detect the concentration of oxygen in the mixed gas of the oxygen and air flowing out of the oxygen mixing component 210; the proximal port 400 is connected to the second pressure sensor 60 through the first connecting pipe 401, the ventilation control air circuit 70 is connected to the first connecting pipe 401, the proximal port 400 is used to connect to the air outlet end of the breathing mask, the external pipe port 300 is used to connect to the air inlet end of the breathing mask, and the ventilation control air circuit 70 is used to clean the condensate and water vapor in the first connecting pipe 401 between the proximal port 400 and the second pressure sensor 60.

[0052] In the embodiment of the present application, since the oxygen mixing component 210 is connected to the oxygen concentration sensor 40, and the first pressure sensor 50 is connected to the oxygen concentration sensor 40, the pressure of the gas flowing out of the oxygen mixing component 210 can be detected by the first pressure sensor 50 in real time, so that the pressure of the gas flowing out of the oxygen mixing component 210 can be known in real time, and the oxygen concentration sensor 40 can detect the concentration of oxygen in the mixed gas of oxygen and air flowing out of the oxygen mixing component 210 in real time, so that the oxygen concentration in the mixed gas of oxygen and air flowing out of the oxygen mixing component 210 can be known in real time, and then the amount of oxygen entering the oxygen mixing component 210 can be adjusted so that the oxygen concentration in the gas flowing out of the oxygen mixing component 210 meets the requirements. Since the proximal port 400 is connected to the second pressure sensor 60 through the first connecting tube 401, and the ventilation control air circuit 70 is connected to the first connecting tube 401, the proximal port 400 can be connected to the air outlet end of the breathing mask, so that after the patient wears the breathing mask, the gas exhaled by the patient can flow to the first connecting tube 401 through the proximal port 400, so that the second pressure sensor 60 can detect the pressure of the gas in the first connecting tube 401, thereby determining the pressure of the gas exhaled by the patient, and the ventilation control air circuit 70 can clean the condensate and water vapor in the first connecting tube 401, that is, to prevent the gas exhaled by the patient from entering the first connecting tube 401 and condensing in the first connecting tube 401 to form condensate and water vapor, which may block the first connecting tube 401, resulting in detection deviation of the second pressure sensor 60 or failure of the second pressure sensor 60. That is, in the embodiment of the present application, by providing a ventilation control air circuit 70, and the ventilation control air circuit 70 is connected to the first connecting tube 401 between the proximal port and the second pressure sensor 60, so that the proximal port 400 is connected to the breathing mask, after the patient wears the breathing mask, once the gas exhaled by the patient enters the first connecting tube 401, the ventilation control air circuit 70 can clean the condensate and water vapor in the first connecting tube 401, so that the first connecting tube 401 is unobstructed, and the condensate and water vapor are prevented from blocking the first connecting tube 401, resulting in a deviation in the detection of the second pressure sensor 60, or the second pressure sensor 60 fails. That is, when using the air circuit system of the ventilation therapy device provided in the embodiment of the present application, the pressure of the gas exhaled by the patient can be determined more accurately.

[0053] Among them, the air circuit system of the ventilation therapy device may also include an external circuit port 300, the oxygen mixing component 210 is connected to the external circuit port 300, and the external circuit port 300 is used to connect to the air inlet of the breathing mask, so that the gas flowing out of the oxygen mixing component 300 can flow to the external circuit port 300, and then flow into the breathing mask. It should be noted that in actual application, the first pressure sensor 50 can detect the pressure of the gas transmitted to the external circuit port 300 in real time, so that the gas transmitted to the external circuit port 300 can be known by the operator in real time, and the operator can adjust the fan 30 according to the pressure, so that the power of the fan 30 is adjusted to adjust the pressure of the gas transmitted to the external circuit port 300. Of course, the air circuit system of the ventilation therapy device may also include a controller, and the first pressure sensor 50 and the fan 30 are both electrically connected to the controller, so that the pressure value detected by the first pressure sensor 50 can be transmitted to the controller in real time, and the controller controls the power of the fan 30 to be adjusted according to the pressure value to adjust the pressure of the gas transmitted to the external circuit port 300. This embodiment of the present application is not limited here.

[0054] In addition, when the air circuit system of the ventilation therapy device includes a controller, the decompression control module 10 and the oxygen concentration sensor 40 can also be electrically connected to the controller, so that the controller can obtain the data detected by the oxygen concentration sensor 40 and control the components in the air circuit system of the ventilation therapy device according to the data.

[0055] In addition, in an embodiment of the present application, the oxygen mixing component 210 includes an oxygen mixing chamber 20 and a fan 30; the fan 30 is located outside the oxygen mixing chamber 20, and the first end of the fan 30 is connected to the air outlet end of the oxygen mixing chamber 20, and the first pressure sensor 50 is connected to the second end of the fan 30; or, the fan 30 is located inside the oxygen mixing chamber 20, and the first pressure sensor 50 is connected to the air outlet end of the oxygen mixing chamber 20.

[0056] Among them, when the first end of the fan 30 is connected to the oxygen mixing chamber, the second end of the fan 30 is connected to the external pipeline port 300, and the first pressure sensor 50 is connected between the second end of the fan 30 and the external pipeline port 300, the fan 30 can transfer the gas in the oxygen mixing chamber 20 to the external pipeline port 300, so that after the external pipeline port 300 is connected to the air inlet of the breathing mask, when the patient wears the breathing mask, the patient can exhale the gas mixed with oxygen and air, and the first pressure sensor 50 can detect the pressure of the gas transferred to the external pipeline port 300 in real time, so as to ensure that the gas transferred to the external pipeline port 300 can be known in real time, so that the power of the fan 30 can be adjusted to adjust the pressure of the gas transferred to the external pipeline port 300, so that the pressure of the gas transferred to the breathing mask is adapted to the patient.

[0057] When the fan 30 is located inside the oxygen mixing chamber 20 , the second end of the oxygen mixing chamber 20 may be connected to the external pipeline port 300 , and the first pressure sensor 50 is connected between the second end of the oxygen mixing chamber 20 and the external pipeline port 300 .

[0058] In addition, in the embodiment of the present application, the oxygen concentration sensor 40 is respectively connected to the two ends of the fan 30, or the oxygen concentration sensor 40 is connected to the second end of the fan 30. When the fan 30 is located outside the oxygen mixing chamber 20 and the first end of the fan 30 is connected to the outlet end of the oxygen mixing chamber 20, the oxygen concentration sensor 40 is respectively connected to the two ends of the fan 30, or the oxygen concentration sensor 40 is connected to the second end of the fan 30; when the fan 30 is located inside the oxygen mixing chamber 20, the oxygen concentration sensor 40 can also be respectively connected to the two ends of the fan 30, or the oxygen concentration sensor 40 can also be connected to the second end of the fan 30. The specific method is not limited in the embodiment of the present application.

[0059] In addition, in some embodiments, Figure 1 As shown, the ventilation control air circuit 70 may include a first ventilation control pipe 71 and a first ventilation control component 72 arranged in the first ventilation control pipe 71; the first pressure sensor 50 is connected to the first pressure detection pipe 51, and the first pressure detection pipe 51 is connected to the second end of the fan 30; the first end of the first ventilation control pipe 71 is connected to the first pressure detection pipe 51, and the second end of the first ventilation control pipe 71 is connected to the first connecting pipe 401, the gas in the first pressure detection pipe 51 flows into the first ventilation control pipe 71, and flows through the first ventilation control component 72 to flow into the first connecting pipe 401, the first ventilation control component 72 is used to reduce the flow rate of the gas flowing through the first ventilation control component 72, and the gas flowing through the first ventilation control component 72 cleans the condensate and water vapor in the first pressure detection pipe 51.

[0060] Since the first pressure sensor 50 is connected to the first pressure detection tube 51, and the first pressure detection tube 51 is connected between the second end of the blower 30 and the external pipe port 300, the gas mixed with air and oxygen flowing out of the blower 30 can flow into the first pressure detection tube 51, so that the first pressure sensor 50 can detect the pressure of the gas flowing out of the blower 30. Since the first end of the first ventilation control tube 71 is connected to the first pressure detection tube 51, and the second end of the first ventilation control tube 71 is connected to the first connecting tube 401, the gas in the first pressure detection tube 51 can flow into the first ventilation control tube 71 and flow through the first ventilation control component 72. The first ventilation control component 72 will reduce the flow of the gas flowing through the first ventilation control component 72, and then the gas flows into the first connecting tube 401, so that the gas can continuously enter the first connecting tube 401, so as to avoid the problem that the patient's exhaled gas enters the first connecting tube 401 and condenses to form condensate and water vapor, thereby blocking the first connecting tube 401. The gas in the first pressure detection tube 51 flows into the first ventilation control tube 71, which is equivalent to flowing to the first pressure sensor 50, and the gas detected by the first pressure sensor 50 is used as the gas source of the ventilation control gas path 70. In addition, by setting the first ventilation control component 72, it is possible to avoid the problem that the flow rate of the gas flowing from the first pressure detection tube 51 to the first ventilation control tube 71 and then flowing from the first ventilation control tube 71 into the first connecting tube 401 is large, resulting in a large error in the data detected by the second pressure sensor 60, and it is possible to avoid the problem that the flow rate of the gas in the first detection tube 41 to the gas in the first ventilation control tube 71 is large, which affects the detection of the first pressure sensor 50. In addition, the existence of the first ventilation control component 72 allows the gas entering the first connecting tube 401 to form a relatively weak airflow, which does not affect the pressure of the proximal port 400 and does not affect the detection of the second pressure sensor 60.

[0061] In the embodiment of the present application, the first ventilation control component 71 includes any one of an air block and an electromagnetic valve. When the first ventilation control component 71 includes an air block, once the gas flows through the air block, the flow rate and flow rate of the gas can be reduced, so that the gas flowing into the first connecting pipe 401 forms a relatively weak airflow. When the first ventilation component 71 includes an electromagnetic valve, the electromagnetic valve can be controlled to open so that the gas flows into the first connecting pipe 401 to clean the first connecting pipe 401. The opening of the electromagnetic valve can also be controlled so that the gas flowing through the electromagnetic valve enters the first connecting pipe 401 and forms a relatively weak airflow. Of course, the electromagnetic valve can also be controlled to close to stop cleaning the first connecting pipe 401.

[0062] It should be noted that after the proximal port 400 is connected to the air outlet end of the breathing mask, once the patient wears the breathing mask, when the patient exhales, the gas exhaled by the patient has a large humidity and temperature, which may cause the gas exhaled by the patient to condense in the first connecting tube 401 to form condensate and water vapor, while the gas in the first pressure detection tube 51 can continuously flow into the first ventilation control tube 71 and flow into the first connecting tube 401 through the ventilation control component 72, so that there is a continuous weak airflow in the first connecting tube 401, so that there is a continuous airflow in the first connecting tube 401, which can avoid the problem of the patient's exhaled gas entering the first connecting tube 401 and condensing to form condensate and water vapor, thereby blocking the first connecting tube 401.

[0063] In addition, in the embodiment of the present application, the air resistance can be formed of metal, and of course, the air resistance can also be formed of rubber. The specific type of the air resistance is not limited in the embodiment of the present application. In addition, one or more through holes are provided on the air resistance, and each through hole has a small diameter. The air resistance is fixed to the first ventilation control tube 71, so that the gas flowing from the first pressure detection tube 51 into the first ventilation control tube 71 will be blocked by the air resistance when flowing through the air resistance, so that less gas passes through the through holes on the air resistance and flows into the first connecting tube 401, so that the air resistance can reduce the flow of the gas flowing through the air resistance, so that a relatively weak air flow flows into the first connecting tube 401. Of course, the air resistance can also be an adjustable air resistance, and the specific form of the air resistance is not limited in the embodiment of the present application.

[0064] In addition, in some embodiments, Figure 2 As shown, the ventilation control air circuit 70 may include a second ventilation control pipe 73 and a ventilation control component 74 arranged in the second ventilation control pipe 73; when the oxygen concentration sensor 40 is respectively connected to the two ends of the fan 30, the first end of the oxygen concentration sensor 40 is connected to the first detection pipe 41, and the second end of the oxygen concentration sensor 40 is connected to the second detection pipe 42. The first detection pipe 41 is connected to the first end of the fan 30, and the second detection pipe 42 is connected to the second end of the fan 30; the first end of the second ventilation control pipe 73 is connected to the second detection pipe 42, and the second end of the second ventilation control pipe 73 is connected to the first connecting pipe 401. The gas in the second detection pipe 42 flows into the second ventilation control pipe 73 and flows through the second ventilation control component 74 to flow into the first connecting pipe 401. The second ventilation control component 74 is used to reduce the flow rate of the gas flowing through the second ventilation control component 74, and the gas flowing through the second ventilation control component 74 cleans the condensate and water vapor in the first connecting pipe 401.

[0065] Since the first end of the oxygen concentration sensor 40 is connected to the first detection tube 41, the second end of the oxygen concentration sensor 40 is connected to the second detection tube 42, the first detection tube 41 is connected to the first end of the fan 30, and the second detection tube 42 is connected to the second end of the fan 30, therefore, the gas mixed with air and oxygen flowing out of the mixed oxygen chamber 20 will also flow to the first detection tube 41 when flowing into the fan 30, and flow through the oxygen concentration sensor 40, and then flow into the second detection tube 42, and the oxygen concentration sensor 40 can detect the oxygen concentration of the gas flowing through the fan 30. Since the first end of the second ventilation control tube 73 is connected to the second detection tube 42, and the second end of the second ventilation control tube 73 is connected to the first connecting tube 401, the gas flowing into the second detection tube 42 will flow into the second ventilation control tube 73 and flow through the second ventilation control assembly 74. The second ventilation control assembly 74 will reduce the flow of the gas flowing through the second ventilation control assembly 74, and then the gas will flow into the first connecting tube 401, so that the first connecting tube 401 can continuously have gas entering, avoiding the problem that the patient's exhaled gas enters the first connecting tube 401 and condenses to form condensate and water vapor, thereby blocking the first connecting tube 401. Among them, the gas in the second detection tube 42 flows into the second ventilation control tube 73, which is equivalent to the gas flowing to the oxygen concentration sensor 40 as the gas source of the ventilation control gas path 70, and cleans the first connecting tube 401. In addition, by providing a second ventilation control component 74, it is possible to avoid the problem that the gas flow rate from the first detection tube 41 or the second detection tube 42 to the second ventilation control tube 73 and then flowing from the second ventilation control tube 73 into the first connecting tube 401 is large, resulting in a large error in the data detected by the second pressure sensor 60.

[0066] It should be noted that the specific structure of the second ventilation control assembly 74 can refer to the structure of the first ventilation control assembly 72, and will not be repeated here. That is, the second ventilation control assembly 74 can include any one of an air resistance and a solenoid valve.

[0067] In addition, in some embodiments, Figure 3 As shown, the air circuit system of the ventilation therapy device may also include a decompression control module, and the ventilation control air circuit 70 may include a third ventilation control tube 75 and a third ventilation control component 76 arranged in the third ventilation control tube 75; the decompression control module 10 is connected to the mixed oxygen chamber 20 through the second connecting tube 11, the third ventilation control tube 75 is connected to the second connecting tube 11, and the second end of the third ventilation control tube 75 is connected to the first connecting tube 401. The gas in the second connecting tube 11 flows into the third ventilation control tube 75 and flows through the third ventilation control component 76 to flow into the first connecting tube 401. The third ventilation control component 76 is used to reduce the flow rate of the gas flowing through the third ventilation control component 76, and the gas flowing through the third ventilation control component 76 clears the condensate and water vapor in the first connecting tube 401.

[0068] Since the decompression control module 10 is connected to the oxygen mixing chamber 20 through the second connecting pipe 11, the third ventilation control pipe 75 is connected to the second connecting pipe 11, and the second end of the third ventilation control pipe 75 is connected to the first connecting pipe 401, once the oxygen flowing out of the decompression control module 10 flows into the second connecting pipe 11, part of the oxygen in the second connecting pipe 11 will flow into the oxygen mixing chamber 20, and the other part will flow into the third ventilation control pipe 75, thereby flowing through the third ventilation control assembly 76, and the third ventilation control assembly 76 will reduce the flow of the gas flowing through the third ventilation control assembly 76, and then the gas flows into the first connecting pipe 401, so that the first connecting pipe 401 can continuously have gas entering, avoiding the problem that the patient's exhaled gas enters the first connecting pipe 401 and condenses to form condensate and water vapor, thereby blocking the first connecting pipe 401. Among them, the gas flowing out of the decompression control module 10 flows into the third ventilation control pipe 75, which is equivalent to using the oxygen flowing into the oxygen mixing chamber 20 as the gas source of the ventilation control gas path 70 to clean the first connecting pipe 401. In addition, by setting up the third ventilation control component 76, it is possible to avoid the problem that the gas flow rate from the second connecting pipe 11 to the third ventilation control pipe 75 and then from the third ventilation control pipe 75 into the first connecting pipe 401 is large, resulting in a large error in the data detected by the second pressure sensor 60.

[0069] It should be noted that the specific structure of the third ventilation control component 76 can refer to the structure of the ventilation control component 72, and will not be repeated here. Among them, the third ventilation control component 74 can include an air block.

[0070] In addition, in some embodiments, Figure 4 As shown, the air circuit system of the ventilation therapy device may also include a decompression control module, and the ventilation control air circuit 70 may include a fourth ventilation control tube 77 and a fourth ventilation control component arranged in the fourth ventilation control tube 77; the decompression control module 10 is connected to the mixed oxygen chamber 20 through the second connecting tube 11, the fourth ventilation control tube 77 is connected to the second connecting tube 11, and the second end of the fourth ventilation control tube 77 is connected to the first connecting tube 401, and the gas in the second connecting tube 11 flows into the fourth ventilation control tube 77; when the fourth ventilation control component 78 is turned on, the gas flowing into the fourth ventilation control tube 77 from the second connecting tube 11 flows through the fourth ventilation control component 78 to flow into the first connecting tube 401, so as to clean the condensate and water vapor in the first connecting tube 401.

[0071] Since the decompression control module 10 is connected to the oxygen mixing chamber 20 through the second connecting pipe 11, the fourth ventilation control pipe 77 is connected to the second connecting pipe 11, and the second end of the fourth ventilation control pipe 77 is connected to the first connecting pipe 401, therefore, once the oxygen flowing out of the decompression control module 10 flows into the second connecting pipe 11, a part of the oxygen in the second connecting pipe 11 will flow into the oxygen mixing chamber 20, and the other part will flow into the fourth ventilation control pipe 77, so that when the fourth ventilation control component 78 is turned on, the gas flowing into the fourth ventilation control pipe 77 will flow through the fourth ventilation control component 78, and the fourth ventilation control component 78 can be controlled to be turned on to allow the gas to flow into the first connecting pipe 401 to clean the first connecting pipe 401, and the fourth ventilation control component 78 can also be controlled to be closed to stop cleaning the first connecting pipe 401, that is, through the fourth ventilation control component 78, it is convenient to control whether the first connecting pipe 401 needs to be cleaned.

[0072] In addition, the opening of the fourth ventilation control assembly 78 can be adjusted to make the airflow into the first connecting pipe 401 relatively weak, and the first connecting pipe 401 can be continuously filled with gas, so as to avoid the patient's exhaled gas entering the first connecting pipe 401 to condense and form condensate and water vapor, thereby blocking the first connecting pipe 401. Among them, the gas flowing out of the decompression control module 10 flows into the fourth ventilation control pipe 77, which is equivalent to using the oxygen flowing into the mixed oxygen chamber 20 as the air source of the ventilation control air path 70 to clean the first connecting pipe 401. In addition, by setting the fourth ventilation control assembly 78, in actual application, the opening of the fourth ventilation control assembly 78 can be adjusted so that the fourth ventilation control assembly 78 has the function of blocking gas, that is, the fourth ventilation control assembly 78 is equivalent to the ventilation control assembly, which can avoid the problem that the flow rate of the gas flowing into the first connecting pipe 401 is large, resulting in a large error in the data detected by the second pressure sensor 60.

[0073] It should be noted that the specific structure of the fourth ventilation control component can refer to the structure of the ventilation control component 72, which will not be repeated here. The fourth ventilation control component 78 may include a solenoid valve.

[0074] In addition, in some embodiments, the air circuit system of the ventilation therapy device may also include a nebulizer control component 80 and a nebulizer port 500; the first end of the nebulizer control component 80 is connected to the second connecting tube 11, and the second end of the nebulizer control component 80 is connected to the nebulizer port 500; when the nebulizer control component 80 is turned on, the gas flowing through the pressure reduction control module 10 flows to the nebulizer control component 80, and flows to the nebulizer port 500 through the nebulizer control component 80.

[0075] Since the first end of the atomization control assembly 80 is in communication with the second connecting tube 11, and the second end of the atomization control assembly 80 is connected to the atomization port 500, the oxygen in the second connecting tube 11 can flow to the atomization control assembly 80, so that when the atomization control assembly 80 is turned on, the oxygen in the second connecting tube 11 can flow to the atomization port 500, so that the patient can undergo atomization therapy at the atomization port 500. That is, by providing the atomization control assembly 80 and the atomization port 500, the patient can undergo atomization therapy at the atomization port 500, thereby diversifying the functions of the airway system of the ventilation therapy device.

[0076] It should be noted that the atomization control assembly 80 can be connected to the second connecting pipe 11, so that the atomization control assembly 80 is communicated with the second connecting pipe 11, and the oxygen in the second connecting pipe 11 can directly enter and flow to the atomization control assembly 80. Of course, the atomization control assembly 80 can also be connected to the fourth ventilation control pipe 77 or the third ventilation control pipe 75, and the atomization control assembly 80 is equivalent to being communicated with the second connecting pipe 11 through the fourth ventilation control pipe 77 or the third ventilation control pipe 75. In this regard, the embodiment of the present application is not limited here. Among them, the atomization control assembly 80 can be a solenoid valve. Of course, the atomization control assembly 80 can also be a mechanical valve. In this regard, the embodiment of the present application is not limited here.

[0077] In addition, in some embodiments, the gas circuit system of the ventilation therapy device may also include an oxygen port 100, an air port 200, an external pipeline port 300, a first filter element 90, a second filter element 110 and a third filter element 120; the oxygen port 100 is connected to the first filter element 90, the first filter element 90 is connected to the oxygen mixing component 210, and the first filter element 90 is used to filter out impurities in the oxygen entering through the oxygen port 100; the air port 200 is connected to the second filter element 110, the second filter element 110 is connected to the oxygen mixing component 210, and the second filter element 110 is used to filter out impurities in the air entering through the air port 200; the external pipeline port 300 is connected to the oxygen mixing component 210, the third filter element 120 is connected between the second end of the oxygen mixing component 210 and the external pipeline port 300, and the third filter element 120 is used to filter out impurities in the gas flowing into the external pipeline port 300.

[0078] Since the first filter element 90 is connected between the oxygen port 100 and the decompression control module 10, the oxygen entering from the oxygen port 100 will flow through the first filter element 90, so that the first filter element 90 can filter out impurities in the oxygen flowing through the first filter element 90, so that the oxygen subsequently flowing into the oxygen mixing component 210 is relatively pure. Since the second filter element 110 is connected between the air port 200 and the oxygen mixing component 210, the air entering from the air port 200 will flow through the second filter element 110, so that the second filter element 110 can filter out impurities in the air flowing through the second filter element 110, so that the air subsequently flowing into the oxygen mixing component 210 is relatively pure. Since the third filter element 120 is connected between the second end of the fan 30 and the external circuit port 300, the gas flowing out of the fan 30 will flow through the third filter element 120 and then flow to the external circuit port 300. The third filter element 120 will filter out impurities in the gas flowing through the third filter element 120, so that the gas flowing to the external circuit port 300 is relatively pure. Therefore, after the external circuit port 300 is connected to the breathing mask, the gas exhaled by the patient is relatively pure.

[0079] It should be noted that when the first pressure sensor 50 is connected to the first pressure detection tube 51, and the first pressure detection tube 51 is connected between the second end of the fan 30 and the external pipeline port 300, at this time, the third filter element 120 can be located between the first pressure detection tube 51 and the external pipeline port 300.

[0080] In addition, in some embodiments, the air circuit system of the ventilation therapy device may also include an oxygen proportional valve 130 and a decompression control module 10. The oxygen proportional valve 130 is connected between the decompression control module 10 and the oxygen mixing chamber 20. The oxygen proportional valve 130 is used to adjust the flow of oxygen entering the oxygen mixing component 210.

[0081] By setting the oxygen proportion valve 130, once the oxygen flows out from the pressure reduction control module 10, when the oxygen flows to the oxygen proportion valve 130, the flow rate of the oxygen entering the oxygen mixing component 210 can be adjusted by adjusting the oxygen proportion valve 130, thereby adjusting the ratio of oxygen in the gas after the oxygen in the oxygen mixing component 210 is mixed with air. That is, by setting the oxygen proportion valve 130, the ratio of oxygen in the oxygen mixing component 210 can be easily adjusted.

[0082] It should be noted that when the decompression control module 10 is connected to the mixed oxygen chamber 20 through the second connecting pipe 11, at this time, the oxygen proportion valve 130 can be connected to the second connecting pipe 11, and the connection position where the third ventilation control pipe 75 or the fourth ventilation control pipe 77 is connected to the second connecting pipe 11 can be located between the oxygen proportion valve 130 and the decompression control module 10.

[0083] In addition, in some embodiments, the air circuit system of the ventilation therapy device may further include a first flow meter 140 and a second flow meter 150; the first flow meter 140 is connected between the oxygen proportion valve 130 and the oxygen mixing component 210, and the first flow meter 140 is used to detect the flow of oxygen entering the oxygen mixing component 210; the second flow meter 150 is connected between the first pressure sensor 50 and the external pipeline port 300, and the second flow meter 150 is used to detect the flow of gas flowing into the external pipeline port 300.

[0084] By providing the first flow meter 140, and the first flow meter 140 is located between the oxygen proportion valve 130 and the oxygen mixing component 210, the flow rate of oxygen entering the oxygen mixing component 210 can be detected in real time through the first flow meter 140, so that the staff can know the flow rate of oxygen entering the oxygen mixing component 210, so as to determine whether it is necessary to adjust the oxygen proportion valve 130 and adjust the proportion of oxygen in the oxygen mixing component 210. In addition, by providing the second flow meter 150, and the second flow meter 150 is connected between the first pressure sensor 50 and the external pipeline port, the flow rate of gas flowing to the external pipeline port 300 can be detected in real time through the second flow meter 150, so that the staff can know the flow rate of gas flowing to the external pipeline port 300, so as to determine whether the flow rate matches the patient's needs.

[0085] It should be noted that when the first pressure sensor 50 is connected to the first pressure detection tube 51, the first pressure detection tube 51 is connected between the second end of the fan 30 and the external pipeline port 300, and the third filter element 120 is located between the first pressure detection tube 51 and the external pipeline port 300, the second flow meter 150 can be located between the third filter element 120 and the first pressure detection tube 51, so that the gas flowing out of the fan 30 first passes through the second flow meter 150, the second flow meter 150 detects the flow rate of the gas, and then the gas flows through the third filter element 120, and finally flows to the external pipeline port 300.

[0086] In addition, in some embodiments, the air circuit system of the ventilation therapy device may further include a third pressure sensor 160 and a fourth pressure sensor 170; the third pressure sensor 160 is connected between the oxygen port 100 and the oxygen mixing component 210, and the third pressure sensor 160 is used to detect the pressure of the oxygen flowing in from the oxygen port 100; the fourth pressure sensor 170 is connected between the air port 200 and the oxygen mixing component 210, and the fourth pressure sensor 170 is used to detect the pressure of the air flowing in from the air port 200.

[0087] By setting the third pressure sensor 160, the third pressure sensor 160 can detect the pressure of the oxygen flowing in from the oxygen port 100 in real time, so that the operator can know the pressure. By setting the fourth pressure sensor 170, the fourth pressure sensor 170 can detect the pressure of the air flowing in from the air port 200 in real time, so that the operator can know the pressure.

[0088] It should be noted that when the air circuit system of the ventilation therapy equipment includes a first filter element 90 and a second filter element 110, and the first filter element 90 is connected between the oxygen port 100 and the decompression control module 10, and the second filter element 110 is connected between the air port 200 and the mixed oxygen chamber 20, then at this time, the third pressure sensor 160 can be connected between the first filter element 90 and the decompression control module 10, and the fourth pressure sensor 170 can be connected between the second filter element 110 and the mixed oxygen chamber 20.

[0089] In addition, in the embodiments of the present application, ventilation therapy equipment includes but is not limited to ventilators, oxygen therapy devices, etc.

[0090] In the embodiment of the present application, since the oxygen mixing component 210 is connected to the oxygen concentration sensor 40, and the first pressure sensor 50 is connected to the oxygen concentration sensor 40, the pressure of the gas flowing out of the oxygen mixing component 210 can be detected by the first pressure sensor 50 in real time, so that the pressure of the gas flowing out of the oxygen mixing component 210 can be known in real time, and the oxygen concentration sensor 40 can detect the concentration of oxygen in the mixed gas of oxygen and air flowing out of the oxygen mixing component 210 in real time, so that the oxygen concentration in the mixed gas of oxygen and air flowing out of the oxygen mixing component 210 can be known in real time, and then the amount of oxygen entering the oxygen mixing component 210 can be adjusted so that the oxygen concentration in the gas flowing out of the oxygen mixing component 210 meets the requirements. Since the proximal port 400 is connected to the second pressure sensor 60 through the first connecting tube 401, and the ventilation control air circuit 70 is connected to the first connecting tube 401, the proximal port 400 can be connected to the air outlet end of the breathing mask, so that after the patient wears the breathing mask, the gas exhaled by the patient can flow to the first connecting tube 401 through the proximal port 400, so that the second pressure sensor 60 can detect the pressure of the gas in the first connecting tube 401, thereby determining the pressure of the gas exhaled by the patient, and the ventilation control air circuit 70 can clean the condensate and water vapor in the first connecting tube 401, that is, to prevent the gas exhaled by the patient from entering the first connecting tube 401 and condensing in the first connecting tube 401 to form condensate and water vapor, which may block the first connecting tube 401, resulting in detection deviation of the second pressure sensor 60 or failure of the second pressure sensor 60. That is, in the embodiment of the present application, by providing a ventilation control air circuit 70, and the ventilation control air circuit 70 is connected to the first connecting tube 401 between the proximal port and the second pressure sensor 60, so that the proximal port 400 is connected to the breathing mask, after the patient wears the breathing mask, once the gas exhaled by the patient enters the first connecting tube 401, the ventilation control air circuit 70 can clean the condensate and water vapor in the first connecting tube 401, so that the first connecting tube 401 is unobstructed, and the condensate and water vapor are prevented from blocking the first connecting tube 401, resulting in a deviation in the detection of the second pressure sensor 60, or the second pressure sensor 60 fails. That is, when using the air circuit system of the ventilation therapy device provided in the embodiment of the present application, the pressure of the gas exhaled by the patient can be determined more accurately.

[0091] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0092] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. An air circuit system of a ventilation treatment device, characterized in that: The air circuit system of the ventilation treatment device includes: an oxygen mixing component, an oxygen concentration sensor, a first pressure sensor, a second pressure sensor, a proximal port and a ventilation control air circuit; The oxygen mixing component is connected to the oxygen concentration sensor, the first pressure sensor is connected to the oxygen concentration sensor, the first pressure sensor is used to detect the mixed pressure of the oxygen and air flowing out of the oxygen mixing component, and the oxygen concentration sensor is used to detect the concentration of oxygen in the mixed gas of the oxygen and air flowing out of the oxygen mixing component; The proximal port is connected to the second pressure sensor via a first connecting tube, the ventilation control air circuit is connected to the first connecting tube, the proximal port is used to connect to the air outlet of the breathing mask, and the ventilation control air circuit is used to clear condensate and water vapor in the first connecting tube between the proximal port and the second pressure sensor.

2. The airway system of the ventilation therapy device according to claim 1, characterized in that: The oxygen mixing component includes an oxygen mixing chamber and a fan; The fan is located outside the oxygen mixing chamber, and a first end of the fan is connected to an air outlet of the oxygen mixing chamber, and the first pressure sensor is connected to a second end of the fan; Alternatively, the fan is located inside the oxygen mixing chamber, and the first pressure sensor is connected to the air outlet of the oxygen mixing chamber.

3. The airway system of the ventilation therapy device according to claim 2, characterized in that: The oxygen concentration sensor is connected to both ends of the fan respectively, or the oxygen concentration sensor is connected to the second end of the fan.

4. The airway system of the ventilation therapy device according to claim 3, characterized in that: The ventilation control air circuit includes a first ventilation control tube and a first ventilation control component disposed in the first ventilation control tube; The first pressure sensor is connected to a first pressure detection tube, and the first pressure detection tube is connected between the second end of the fan and an external pipe port; The first end of the first ventilation control tube is connected to the first pressure detection tube, and the second end of the first ventilation control tube is connected to the first connecting tube. The gas in the first pressure detection tube flows into the first ventilation control tube and flows through the first ventilation control component to flow into the first connecting tube. The first ventilation control component is used to reduce the flow rate of the gas flowing through the first ventilation control component, and the gas flowing through the first ventilation control component flows into the first pressure detection tube.

5. The airway system of the ventilation therapy device according to claim 3, characterized in that: The ventilation control air circuit includes a second ventilation control tube and a second ventilation control component disposed in the second ventilation control tube; In the case where the oxygen concentration sensor is respectively connected to both ends of the fan, the first end of the oxygen concentration sensor is connected to a first detection tube, the second end of the oxygen concentration sensor is connected to a second detection tube, the first detection tube is connected to the first end of the fan, and the second detection tube is connected to the second end of the fan; The first end of the second ventilation control tube is connected to the second detection tube, and the second end of the second ventilation control tube is connected to the first connecting tube. The gas in the second detection tube flows into the second ventilation control tube and flows through the second ventilation control component to flow into the first connecting tube. The second ventilation control component is used to reduce the flow rate of the gas flowing through the second ventilation control component, and the gas flowing through the second ventilation control component flows into the first connecting tube.

6. The airway system of the ventilation therapy device according to claim 3, characterized in that: The air circuit system of the ventilation therapy device further includes a decompression control module, and the ventilation control air circuit includes a third ventilation control tube and a third ventilation control component arranged in the third ventilation control tube; The pressure reduction control module is connected to the oxygen mixing component through a second connecting pipe, the third ventilation control pipe is connected to the second connecting pipe, and the second end of the third ventilation control pipe is connected to the first connecting pipe. The gas in the second connecting pipe flows into the third ventilation control pipe and flows through the third ventilation control component to flow into the first connecting pipe. The third ventilation control component is used to reduce the flow rate of the gas flowing through the third ventilation control component so that the gas flowing through the third ventilation control component flows into the first connecting pipe.

7. The airway system of the ventilation therapy device according to claim 3, characterized in that: The air circuit system of the ventilation therapy device further includes a decompression control module, and the ventilation control air circuit includes a fourth ventilation control tube and a fourth ventilation control component arranged in the fourth ventilation control tube; The decompression control module is connected to the oxygen mixing assembly through a second connecting pipe, the fourth ventilation control pipe is connected to the second connecting pipe, the second end of the fourth ventilation control pipe is connected to the first connecting pipe, and the gas in the second connecting pipe flows into the fourth ventilation control pipe; When the fourth ventilation control assembly is turned on, the gas flowing from the second connecting pipe into the fourth ventilation control pipe flows through the fourth ventilation control assembly to flow into the first connecting pipe.

8. The airway system of the ventilation therapy device according to claim 6 or 7, characterized in that: The air circuit system of the ventilation therapy device also includes an atomization control component and an atomization port; The first end of the atomization control assembly is in communication with the second connecting pipe, and the second end of the atomization control assembly is connected to the atomization port; When the atomization control assembly is turned on, the gas flowing through the pressure reduction control module flows to the atomization control assembly, and flows to the atomization port through the atomization control assembly.

9. The airway system of the ventilation therapy device according to any one of claims 1 to 7, characterized in that: The air circuit system of the ventilation therapy device also includes an oxygen port, an air port, an external pipe port, a first filter element, a second filter element and a third filter element; The oxygen port is connected to the first filter element, the first filter element is connected to the oxygen mixing component, and the first filter element is used to filter out impurities in the oxygen entering through the oxygen port; The air port is connected to the second filter element, the second filter element is connected to the oxygen mixing component, and the second filter element is used to filter out impurities in the air entering through the air port; The external pipe port is connected to the oxygen mixing component, the third filter element is connected between the oxygen mixing component and the external pipe port, and the third filter element is used to filter out impurities in the gas flowing into the external pipe port.

10. The airway system of the ventilation therapy device according to any one of claims 1 to 7, characterized in that: The air circuit system of the ventilation therapy device also includes an oxygen proportional valve and a pressure reduction control module. The oxygen proportional valve is connected between the pressure reduction control module and the oxygen mixing component. The oxygen proportional valve is used to adjust the flow of oxygen entering the oxygen mixing component.

11. The airway system of the ventilation therapy device according to claim 10, characterized in that: The air circuit system of the ventilation therapy device further includes a first flow meter and a second flow meter; The first flow meter is connected between the oxygen proportion valve and the oxygen mixing component, and the first flow meter is used to detect the flow rate of oxygen entering the oxygen mixing component; The second flow meter is connected between the first pressure sensor and the external pipe port, and the second flow meter is used to detect the flow of the gas flowing into the external pipe port.

12. The airway system of the ventilation therapy device according to claim 9, characterized in that: The air circuit system of the ventilation therapy device further includes a third pressure sensor and a fourth pressure sensor; The third pressure sensor is connected between the oxygen port and the pressure reduction control module, and the third pressure sensor is used to detect the pressure of the oxygen flowing in from the oxygen port; The fourth pressure sensor is connected between the air port and the oxygen mixing component, and is used to detect the pressure of the air flowing in from the air port.

13. The airway system of the ventilation therapy device according to claim 4, characterized in that: The first ventilation control component includes any one of an air resistor and a solenoid valve.

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