Breathing assistance device and medical equipment

Abstract

The invention provides a breathing assistance device and a medical apparatus. The breathing assistance device includes: a humidifier unit having an inlet port and an outlet port; the heating module is used for providing heat energy for the humidifier unit so as to heat water in the humidifier unit; the in-situ detection module is used for outputting a first in-situ detection result of the humidifier unit according to the contact between the humidifier unit and the heating module; the water level detection module is used for detecting specific parameters of the humidifier unit so as to detect the water level of the humidifier unit and outputting a second in-place detection result of the humidifier unit according to the specific parameters; the heating module determines whether to heat the humidifier unit or not according to the first in-place detection result and the second in-place detection result. According to the invention, the reliability of in-place detection judgment of the humidifier unit is improved, and the in-place detection function is more stable.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and more specifically to respiratory assist devices. Background Technology

[0002] The water tank presence detection function is a crucial feature of humidifiers. Heating only begins after the water tank is installed and detected as present, avoiding the risk of heating without a water tank. Currently, the industry uses a structure installed below the heating plate that triggers a microswitch or causes a voltage change when the water tank is pressed down to determine presence. However, this method cannot prevent false detection of presence due to factors other than the water tank pressing down on the heating plate, potentially leading to heating even when there is no water tank. Furthermore, insufficient contact can also result in the water tank not heating properly after installation. Summary of the Invention

[0003] In view of the above problems, the present invention provides a breathing assistance device to solve the problem of accidental heating when there is no water tank and improve the reliability of water tank presence detection.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] According to one aspect of the present invention, a breathing aid is provided for heating and humidifying a gas stream delivered to a user, comprising:

[0006] A humidifier unit having an inlet port and an outlet port, the humidifier unit being configured to receive the gas flow through the inlet port, heat water within the humidifier unit to heat and humidify the gas flow, and discharge the heated and humidified gas flow through the outlet port;

[0007] A heating module, which provides heat energy to the humidifier unit to heat the water inside the humidifier unit;

[0008] The in-situ detection module outputs the first in-situ detection result of the humidifier unit based on the contact between the humidifier unit and the heating module.

[0009] A water level detection module is used to detect specific parameters of the humidifier unit to detect its water level, and to output a second in-situ detection result of the humidifier unit based on the specific parameters.

[0010] The heating module determines whether to heat the humidifier unit based on the first in-situ detection result and the second in-situ detection result.

[0011] In some embodiments, when the water level detection module detects a specific parameter of the humidifier unit to detect its water level, if the specific parameter is higher than a first predetermined threshold, the water level detection result of the humidifier unit is output; if the specific parameter is lower than a second predetermined threshold, the second presence detection result is not present, and the second predetermined threshold is less than or equal to the first predetermined threshold.

[0012] In some embodiments, the heating module determines whether to heat the humidifier unit based on a first in-situ detection result and a second in-situ detection result, including:

[0013] When either the first or second presence detection result is not present, the heating module does not heat the humidifier unit; when both the first and second presence detection results are present, the heating module heats the humidifier unit; or

[0014] When either the first presence detection result or the second presence detection result indicates that the humidifier unit is in place, the heating module heats the humidifier unit; when neither the first presence detection result nor the second presence detection result indicates that the humidifier unit is out of place, the heating module does not heat the humidifier unit.

[0015] In some embodiments, the in-situ detection module and the water level detection module independently output the first in-situ detection result and the second in-situ detection result, or one of the in-situ detection module and the water level detection module determines whether to output an in-situ detection result based on the in-situ detection result of the other.

[0016] In some embodiments, when the first presence detection result is not present, the heating module determines not to heat the humidifier unit;

[0017] When the first presence detection result is in place, the water level detection module outputs the second presence detection result; wherein, when the second presence detection result is in place, the heating module determines to heat the humidifier unit, and when the second presence detection result is not in place, the heating module determines not to heat the humidifier unit.

[0018] In some embodiments, when the second presence detection result is not present, the heating module determines not to heat the humidifier unit;

[0019] When the second presence detection result is in place, the presence detection module outputs the first presence detection result; wherein, when the first presence detection result is in place, the heating module determines to heat the humidifier unit, and when the first presence detection result is not in place, the heating module determines not to heat the humidifier unit.

[0020] In some embodiments, when the first presence detection result is in place, the heating module determines to heat the humidifier unit;

[0021] When the first presence detection result is not present, the water level detection module outputs the second presence detection result; wherein, when the second presence detection result is present, the heating module determines to heat the humidifier unit, and when the second presence detection result is not present, the heating module determines not to heat the humidifier unit.

[0022] In some embodiments, when the second presence detection result is in place, the heating module determines to heat the humidifier unit;

[0023] When the second presence detection result is not present, the presence detection module outputs the first presence detection result; wherein, when the first presence detection result is present, the heating module determines to heat the humidifier unit, and when the first presence detection result is not present, the heating module determines not to heat the humidifier unit.

[0024] In some embodiments, when the second presence detection result or the first presence detection result changes from present to absent, the heating module stops heating the humidifier unit; or...

[0025] When the second presence detection result or the first presence detection result changes from absent to present, the heating module heats the humidifier unit.

[0026] In some embodiments, the in-situ detection module cyclically outputs a first in-situ detection result at a first time interval; the water level detection module cyclically outputs a second in-situ detection result at a second time interval.

[0027] In some embodiments, when the water level detection module detects a specific parameter of the humidifier unit to detect its water level, if the specific parameter is lower than a third predetermined threshold, it outputs that the humidifier unit is not in place.

[0028] In some embodiments, when the specific parameter is higher than a third predetermined threshold, the water level detection module detects the water level of the humidifier unit based on the specific parameter.

[0029] In some embodiments, a display module is further included, which is configured to display whether the humidifier unit is in place based on the first presence detection result and / or the second presence detection result.

[0030] In some embodiments, a housing is provided for accommodating the humidifier unit, and a heating module is disposed within the housing, wherein the heat energy of the heating module is transferred to the humidifier unit when the humidifier unit is placed within the housing.

[0031] In some embodiments, the in-situ detection module and / or the water level detection module are disposed on the body, and the in-situ detection module and / or the water level detection module detects the humidifier unit when the humidifier unit is placed on the body.

[0032] In some embodiments, the water level detection module is disposed on the side wall of the body facing the humidifier unit. When the humidifier unit is placed on the body, the water level detection module detects its water level by contacting the outer shell of the humidifier unit.

[0033] In some embodiments, the in-situ detection module is disposed on the side wall or bottom of the body corresponding to the humidifier unit, and when the humidifier unit is placed in the body, the in-situ detection module detects the humidifier unit.

[0034] In some embodiments, the water level detection module is disposed on the humidifier unit.

[0035] In some embodiments, a first in-situ detection result of the humidifier unit is output based on the contact between the humidifier unit and the heating module, including: displacement caused by the pressure applied by the humidifier unit to the heating module, or impedance change caused by the contact between the humidifier unit and the heating module, or level change caused by the contact between the humidifier unit and the heating module, or brightness change caused by the contact between the humidifier unit and the heating module.

[0036] The first in-situ detection result of the output humidifier unit.

[0037] In some embodiments, the water level detection module is used to detect specific parameters of the humidifier unit to detect its water level, including: the water level detection module is used to detect the capacitance value of the humidifier unit to detect its water level, or the water level detection module is used to detect the signal reflection time value of the humidifier unit to detect its water level, or the water level detection module is used to detect the resistance value of the humidifier unit to detect its water level, or the water level detection module is used to detect the image signal of the humidifier unit to detect its water level.

[0038] According to another aspect of the present invention, a breathing aid device is provided for heating and humidifying a gas stream delivered to a user, comprising:

[0039] A humidifier unit having an inlet port and an outlet port, the humidifier unit being configured to receive the gas flow through the inlet port, heat water within the humidifier unit to heat and humidify the gas flow, and discharge the heated and humidified gas flow through the outlet port;

[0040] A heating module, which provides heat energy to the humidifier unit to heat the water inside the humidifier unit;

[0041] The in-situ detection module outputs the first in-situ detection result of the humidifier unit based on the contact between the humidifier unit and the heating module.

[0042] A water level detection module is used to detect specific parameters of the humidifier unit to detect its water level, and to output the water level detection result of the humidifier unit based on the specific parameters.

[0043] The heating module determines whether to heat the humidifier unit based on the first in-situ detection result and the water level detection result.

[0044] In some embodiments, when the water level detection module detects a specific parameter of the humidifier unit to detect its water level, if the specific parameter is higher than a first predetermined threshold, the water level detection result of the humidifier unit is output; if the specific parameter is lower than a second predetermined threshold, the humidifier unit is output as not in place, wherein the second predetermined threshold is less than or equal to the first predetermined threshold.

[0045] In some embodiments, the water level detection module outputs specific parameters of the humidifier unit only after the first presence detection result indicates that the humidifier is in place.

[0046] In some embodiments, it also includes:

[0047] The body is used to house the humidifier unit, and the heating module is provided inside the body. The heat energy of the heating module is transferred to the humidifier unit when the humidifier unit is placed in the body.

[0048] According to another aspect of the present invention, a breathing aid device is provided for heating and humidifying a gas stream delivered to a user, comprising:

[0049] A humidifier unit having an inlet port and an outlet port, the humidifier unit being configured to receive the gas flow through the inlet port, heat water within the humidifier unit to heat and humidify the gas flow, and discharge the heated and humidified gas flow through the outlet port;

[0050] A heating module, which provides heat energy to the humidifier unit to heat the water inside the humidifier unit;

[0051] The first in-situ detection module is used to detect the position of the humidifier unit and output the first in-situ detection result of the humidifier unit.

[0052] The second in-situ detection module is used to detect specific parameters of the humidifier unit and output a second in-situ detection result.

[0053] The heating module determines whether to heat the humidifier unit based on the first in-situ detection result and the second in-situ detection result.

[0054] In some embodiments, when the second presence detection module detects a specific parameter of the humidifier unit and outputs a second presence detection result, if the specific parameter is higher than a first predetermined threshold, the water level detection result of the humidifier unit is output; if the specific parameter is lower than a second predetermined threshold, the second presence detection result is output as not present, and the second predetermined threshold is less than or equal to the first predetermined threshold.

[0055] In some embodiments, the second presence detection module outputs specific parameters of the humidifier unit only after the first presence detection result indicates that the humidifier is in place.

[0056] In some embodiments, it also includes:

[0057] The body is used to house the humidifier unit, and the heating module is provided inside the body. The heat energy of the heating module is transferred to the humidifier unit when the humidifier unit is placed in the body.

[0058] According to another aspect of the present invention, the present invention provides a medical device including the respiratory assist device described in any one of the embodiments of the present invention.

[0059] Unlike existing technologies, this invention has at least the following advantages: In this breathing assist device, the water level detection module is a structure designed to obtain the water level of the humidifier unit. It obtains the water level by detecting specific parameters of the humidifier unit. This invention outputs these specific parameters for water level detection as a second in-situ detection result, thus realizing the conversion of the humidifier unit's specific parameters into a second in-situ detection result. Then, the heating module comprehensively judges the second and first in-situ detection results to jointly detect the presence of the humidifier unit, thereby determining whether to heat the humidifier unit. This avoids the problem of inaccurate judgments using a single in-situ detection result. It improves the reliability of the humidifier unit's in-situ detection judgment, making the in-situ detection function more stable.

[0060] The above description of the invention is merely an overview of the technical solution of this application. In order to enable those skilled in the art to better understand the technical solution of this application and to implement it based on the description and drawings, and to make the above-mentioned objectives and other objectives, features and advantages of this application easier to understand, the following description is provided in conjunction with the specific embodiments and drawings of this application. Attached Figure Description

[0061] The accompanying drawings are only used to illustrate the principles, implementation methods, applications, features, and effects of specific embodiments of the present invention and other related contents, and should not be considered as limitations on this application.

[0062] In the accompanying drawings of the instruction manual:

[0063] Figure 1 This is a side view of an embodiment of the respiratory assist device of the present invention;

[0064] Figure 2 This is a flowchart of a method according to an embodiment of the respiratory assist device of the present invention;

[0065] Figure 3 This is a three-dimensional structural diagram of the humidifier unit and the main body of an embodiment of the respiratory assist device of the present invention.

[0066] Figure 4 This is a three-dimensional structural diagram of the humidifier unit placed in the body according to an embodiment of the respiratory assist device of the present invention;

[0067] Figure 5 This is a side view of an embodiment of the respiratory assist device of the present invention.

[0068] The reference numerals used in the above figures are explained as follows:

[0069] 1. Humidifier unit;

[0070] 11. Enter the port;

[0071] 12. Discharge port;

[0072] 2. Heating module;

[0073] 3. In-situ detection module;

[0074] 4. Water level detection module;

[0075] 5. Delivery of the catheter;

[0076] 51. User Interface;

[0077] 6. Display module;

[0078] 7. Organism;

[0079] 30. First In-situ Detection Module;

[0080] 40. Second In-situ Detection Module. Detailed Implementation

[0081] To illustrate the possible application scenarios, technical principles, implementable specific solutions, and achievable objectives and effects of this application in detail, the following description, in conjunction with the listed specific embodiments and accompanying drawings, provides a detailed explanation. The embodiments described herein are merely illustrative of the technical solutions of this application and are therefore intended to limit the scope of protection of this application.

[0082] In this document, the term "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The term "embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment, nor does it specifically limit its independence or connection with other embodiments. In principle, in this application, as long as there are no technical contradictions or conflicts, the technical features mentioned in each embodiment can be combined in any way to form corresponding implementable technical solutions.

[0083] Unless otherwise defined, the technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the use of related terms herein is merely for the purpose of describing particular embodiments and is not intended to limit this application.

[0084] In the description of this application, the term "and / or" is used by the respiratory assist device to describe the logical relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A exists, B exists, and A and B exist simultaneously. Additionally, the character " / " generally indicates an "or" logical relationship between the preceding and following objects.

[0085] In this application, terms such as “first” and “second” are used only to distinguish one entity or operation from another, and do not necessarily require or imply any actual quantity, hierarchy or order relationship between these entities or operations.

[0086] Without further limitations, the use of terms such as “comprising,” “including,” “having,” or other similar open-ended expressions in this application is intended to cover non-exclusive inclusion, which does not exclude the presence of additional elements in a process, method, or product that includes the stated elements, such that a process, method, or product that includes a list of elements may include not only those defined elements but also other elements not expressly listed, or elements inherent to such a process, method, or product.

[0087] Similar to the understanding in the Examination Guidelines, in this application, expressions such as "greater than," "less than," and "exceeding" are understood to exclude the stated number; expressions such as "above," "below," and "within" are understood to include the stated number. Furthermore, in the description of the embodiments in this application, "multiple" means two or more (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups" and "multiple times," unless otherwise explicitly specified.

[0088] In the description of the embodiments of this application, the space-related expressions used, such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "vertical," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," indicate the orientation or positional relationship based on the orientation or positional relationship shown in the specific embodiments or drawings. They are only for the purpose of describing the specific embodiments of this application or for the reader's understanding, and do not indicate or imply that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0089] Unless otherwise expressly specified or limited, the terms "installation," "connection," "linking," "fixing," and "setting," as used in the description of the embodiments of this application, should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two components or the interaction between two components. For those skilled in the art to which this application pertains, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0090] See Figure 1 According to some embodiments of the present invention, a breathing aid device is provided for heating and humidifying a gas stream delivered to a user, the gas stream being a gas stream containing a certain concentration of oxygen. The breathing aid device mainly includes a humidifier unit 1 (also known as a water tank), a heating module 2, an in-situ detection module 3, and a water level detection module 4.

[0091] The humidifier unit 1 has an inlet port 11 and an outlet port 12. The humidifier unit 1 is configured to receive a gas flow through the inlet port 11, heat the water inside the humidifier unit 1 to heat and humidify the gas flow passing through the humidifier unit 1, and discharge the heated and humidified gas flow through the outlet port 12.

[0092] The humidifier unit 1 has a cavity that can hold water. When the water in the humidifier unit 1 is heated, it forms water vapor inside the humidifier unit 1. When the gas flows through the humidifier unit 1, it carries away the water vapor, thus heating and humidifying the gas flow.

[0093] The exhaust port 12 of the humidifier unit 1 provides the user with a flow of heated and humidified gas through the delivery conduit 5. The end of the delivery conduit 5 has a user interface 51 for the user to use. The user interface 51 can be a nasal mask, nasal cannula, face mask, etc.

[0094] The heating module 2 is used to provide heat energy to the humidifier unit 1 to heat the water inside the humidifier unit 1. The heating module 2 can be a device such as a heating plate or heating wire, which generates heat after receiving electrical energy. Optionally, the heating module 2 is in close contact with the bottom of the humidifier unit 1, and the heat energy of the heating module 2 is provided to the humidifier unit 1.

[0095] The presence detection module 3 outputs a first presence detection result for the humidifier unit 1 based on the contact between the humidifier unit 1 and the heating module 2. That is, when the humidifier unit 1 is in contact with the heating module 2, the presence detection module 3 outputs a first presence detection result indicating that the humidifier unit 1 is in place; when the humidifier unit 1 is not in contact with the heating module 2, the presence detection module 3 outputs a first presence detection result indicating that the humidifier unit 1 is not in place.

[0096] The water level detection module 4 is used to detect specific parameters of the humidifier unit 1 to detect its water level, and to output a second presence detection result of the humidifier unit 1 based on the specific parameters. It should be noted that in this invention, the water level indicates the numerical value of the water surface position in the humidifier unit 1, and the number of values ​​can be one or more. The water level value can be calculated using a conversion formula based on the detected specific parameters of the humidifier unit 1. In the actual software programming for water level detection, the variable type storing the water level can be an integer or a floating-point number. "Presence" indicates the position of the humidifier unit 1; the presence detection result includes two states: present and absent. As mentioned above, based on whether the humidifier unit 1 is in contact with the heating module 2, the first presence detection result output includes present and absent states. In the actual software programming for presence detection, the variable type storing this presence result can be a Boolean type. The water level detection module 4 can detect specific parameters of the humidifier unit 1. These specific parameters can be used to calculate the water level, or the module can output a second presence detection result indicating whether the humidifier unit 1 is in place after comparing the specific parameter with a specific value.

[0097] The heating module 2 determines whether to heat the humidifier unit 1 based on the first and second in-situ detection results. That is, the heating module 2 makes a comprehensive judgment based on the first and second in-situ detection results to determine whether to heat the humidifier unit 1.

[0098] Based on the above scheme, it can be seen that in this breathing assistance device, the water level detection module 4 is a structure set up to obtain the water level of the humidifier unit 1. It obtains the water level by detecting specific parameters of the humidifier unit 1. This invention outputs these specific parameters used for water level detection as a second in-situ detection result, realizing the conversion of the specific parameters of the humidifier unit 1 into a second in-situ detection result. Then, the heating module 2 makes a comprehensive judgment based on the second and first in-situ detection results, jointly realizing the in-situ detection of the humidifier unit 1, thereby determining whether to heat the humidifier unit 1. This avoids the problem of inaccurate judgment using a single in-situ detection result, improves the reliability of the in-situ detection judgment of the humidifier unit 1, and makes the in-situ detection function more stable.

[0099] In this invention, in order to output the second presence detection result, the water level detection module 4 needs to detect specific parameters of the humidifier unit 1. Although the detected specific parameters of the humidifier unit 1 can also be used to detect its water level, in practice, the water level can be detected whenever the specific parameter is detected, or only when a certain condition is met; that is, water level detection is not always necessary. This certain condition can be a time condition or the value of a specific parameter. For example, in an embodiment where a certain parameter value is met, when the water level detection module 4 detects the specific parameter of the humidifier unit 1 to detect its water level, if the specific parameter is higher than a first predetermined threshold, the water level detection result of the humidifier unit 1 is output; if the specific parameter is lower than a second predetermined threshold, the second presence detection result is "not in place," and the second predetermined threshold is less than or equal to the first predetermined threshold. If the specific parameter is higher than the second predetermined threshold, the second presence detection result is "in place." In this embodiment, the water level detection result is only output when the specific parameter of the humidifier unit 1 is high. This way, when the water level is low, the water level detection result is not output, avoiding the output of excessively low water level detection results.

[0100] It should be noted that when comparing values, this invention describes the results as being above and below a threshold, classifying the values ​​into two cases. However, there is also a case where the value is equal to the threshold. This equal-threshold value can be considered together with either the above-threshold or the below-threshold case. Regardless of whether the equal-threshold value is placed on the side above or below the threshold, it is merely a slight change in the critical situation; the values ​​are still described as being divided into two cases. For the sake of simplicity, when this invention is described as being above and below a threshold, it actually includes embodiments where the value is above or equal to the threshold and below but not equal to the threshold, or embodiments where the value is above but not equal to the threshold and below or equal to the threshold.

[0101] In some embodiments, the heating module 2 determines whether to heat the humidifier unit 1 based on a first presence detection result and a second presence detection result, including: when either the first or second presence detection result is not present, the heating module 2 does not heat the humidifier unit 1; when both the first and second presence detection results are present, the heating module 2 heats the humidifier unit 1. This ensures that heating only occurs when both presence detection results are present, making the heating conditions more stringent, improving heating safety, and avoiding accidental heating. Alternatively: the heating module 2 heats the humidifier unit 1 when either the first or second presence detection result is present; when neither the first nor the second presence detection result is present, the heating module 2 does not heat the humidifier unit 1. This ensures that heating is not performed only when neither presence detection result is present, and heating is performed as soon as one presence result is present, improving the timeliness of heating and reducing the possibility of failure to heat.

[0102] In some embodiments, the presence detection module 3 and the water level detection module 4 independently output a first presence detection result and a second presence detection result, meaning that the presence detection module 3 and the water level detection module 4 are independent of each other, and the timing of their output is not affected by the other. Alternatively, in some embodiments, one of the presence detection module 3 and the water level detection module 4 determines whether to output a presence detection result based on the presence detection result of the other. That is, the presence detection module 3 and the water level detection module 4 influence each other, and the timing of one's output can be affected by the other. Thus, the other only outputs a presence detection result when the presence detection result of one meets specific conditions, thereby reducing the output of unnecessary presence detection results and improving the reliability of presence detection judgment.

[0103] In some embodiments, such as Figure 2As shown, in step S201, the first presence detection module 30 performs presence detection on the humidifier unit 1, and in step S202, it determines whether the presence signal is triggered, i.e., whether it is in place. When the first presence detection result is not in place, step S203 is entered, which determines that the humidifier unit 1 is not in place, and the heating module 2 determines not to heat the humidifier unit 1. Then, only when the first presence detection result is in place, step S204 is entered, where the water level detection module 4 outputs the second presence detection result and performs water level detection; and in step S205, it is determined whether the presence condition is met. Specifically, when the second presence detection result is in place, step S206 is entered, which determines that the humidifier unit 1 is in place, and the heating module 2 determines to heat the humidifier unit 1; when the second presence detection result is not in place, step S203 is entered, which determines that the humidifier unit 1 is not in place, and the heating module 2 determines not to heat the humidifier unit 1. This way, the water level detection module 4 only outputs the second presence detection result when the first presence detection result is "in place." If the first presence detection result is "out of place," the water level detection module 4 does not output the second presence detection result, reducing unnecessary outputs and improving the reliability of presence detection judgment. Furthermore, the heating module 2 only determines to heat the humidifier unit 1 when both the first and second presence detection results are "in place," achieving heating under strict conditions and avoiding false heating.

[0104] In some embodiments, when the second presence detection result is "not in place," the heating module 2 determines not to heat the humidifier unit 1; when the second presence detection result is "in place," the presence detection module 3 outputs the first presence detection result. Specifically, when the first presence detection result is "in place," the heating module 2 determines to heat the humidifier unit 1; when the first presence detection result is "not in place," the heating module 2 determines not to heat the humidifier unit 1. This way, the water level detection module 4 only outputs the first presence detection result when the second presence detection result is "in place," and the presence detection module 3 does not output the first presence detection result when the second presence detection result is "not in place," reducing unnecessary output and improving the reliability of presence detection judgment. Furthermore, the heating module 2 only determines to heat the humidifier unit 1 when both the second and first presence detection results are "in place," achieving heating under strict conditions and avoiding erroneous heating.

[0105] In some embodiments, when the first presence detection result is "in place," the heating module 2 determines to heat the humidifier unit 1; when the first presence detection result is "out of place," the water level detection module 4 outputs a second presence detection result. Specifically, when the second presence detection result is "in place," the heating module 2 determines to heat the humidifier unit 1; when the second presence detection result is "out of place," the heating module 2 determines not to heat the humidifier unit 1. This way, the water level detection module 4 only outputs the second presence detection result when the first presence detection result is "out of place," and does not output the second presence detection result when the first presence detection result is "in place," reducing unnecessary outputs and improving the reliability of presence detection judgment. Furthermore, the heating module 2 only determines to stop heating the humidifier unit 1 when both the first and second presence detection results are "out of place," achieving more lenient heating conditions and reducing the possibility of not being able to heat.

[0106] In some embodiments, when the second presence detection result is "in place," the heating module 2 determines to heat the humidifier unit 1; when the second presence detection result is "out of place," the presence detection module 3 outputs the first presence detection result. Specifically, when the first presence detection result is "in place," the heating module 2 determines to heat the humidifier unit 1; when the first presence detection result is "out of place," the heating module 2 determines not to heat the humidifier unit 1. This way, the water level detection module 4 only outputs the first presence detection result when the second presence detection result is "out of place," and the presence detection module 3 does not output the first presence detection result when the second presence detection result is "in place," reducing unnecessary outputs and improving the reliability of presence detection judgment. Furthermore, only when both the second and first presence detection results are "out of place" does the heating module 2 determine to stop heating the humidifier unit 1, achieving more relaxed heating conditions and reducing situations where heating is impossible.

[0107] In some embodiments, when the second presence detection result or the first presence detection result changes from present to absent, the heating module 2 stops heating the humidifier unit 1; that is, under strict heating conditions, if one presence detection result changes from present to absent, heating of the humidifier unit 1 is stopped without judging the other presence detection result, thus achieving heating under strict conditions and avoiding false heating. Alternatively, when the second presence detection result or the first presence detection result changes from absent to present, the heating module 2 heats the humidifier unit 1; that is, under relaxed heating conditions, if one presence detection result changes from absent to present, heating of the humidifier unit 1 begins without judging the other presence detection result, thus achieving heating under relaxed conditions and reducing the possibility of not being able to heat.

[0108] In some embodiments, the presence detection module 3 cyclically outputs a first presence detection result at a first time interval; the water level detection module 4 cyclically outputs a second presence detection result at a second time interval. The first time interval and the second time interval may be the same or different. When the first time interval arrives, the presence detection module 3 outputs the current first presence detection result, and the output first presence detection result is recorded. When the second time interval arrives, the water level detection module 4 outputs the current second presence detection result, and the output second presence detection result is recorded. When either the first or second presence detection result is output, the heating module 2 determines whether to heat the humidifier unit 1 based on the latest output presence detection result and the previously recorded other presence detection result. This allows the heating module 2 to determine whether to heat based on whether the presence detection result is output, improving the real-time performance of heating and presence detection.

[0109] In some embodiments, when the water level detection module 4 detects specific parameters of the humidifier unit 1 to detect its water level, if the specific parameter is lower than a third predetermined threshold, it outputs that the humidifier unit 1 is not in place. In this embodiment, regardless of whether the water level detection module 4 calculates the water level value, as long as the specific parameter is lower than the third predetermined threshold, it outputs that the humidifier unit 1 is not in place. It should be noted that the emphasis here is on the humidifier unit 1 being not in place, and not just the second presence detection result being not in place. It can be considered that when the specific parameter is lower than the third predetermined threshold, both the first presence detection result and the second presence detection result will be changed to not in place, or in other words, the first presence detection result and the second presence detection result will be ignored. Then, the heating module 2 cancels heating the humidifier unit 1 based on the situation that the humidifier unit 1 is not in place, ensuring the safety of heating. The third predetermined threshold may be lower than the first predetermined threshold compared to the first predetermined threshold in the above embodiment.

[0110] Based on the above embodiments, when a specific parameter is higher than a third predetermined threshold, the water level detection module 4 detects the water level of the humidifier unit 1 according to the specific parameter. That is, at this time, the water level value can be calculated, or a second in-situ detection result can be output based on the specific parameter. For example, in the above embodiments, if the specific parameter is higher than the first predetermined threshold, the second in-situ detection result is "in-situ," and the output of the in-situ detection module 3 to the first in-situ detection result can be restored. Then, the heating module 2 can determine whether to heat the humidifier unit 1 based on the first and second in-situ detection results.

[0111] To display the in-situ detection results, in some embodiments, such as Figure 3As shown, it also includes a display module 6, which is used to display whether the humidifier unit 1 is in place based on the first and / or second presence detection results. The display module 6 can be a display screen or an indicator light. It can display a total presence detection result, or display the first or second presence detection results separately, or only one of the presence detection results. The display screen allows the user to know whether the humidifier unit 1 is in place, facilitating position adjustment or water addition for the humidifier unit 1.

[0112] In some embodiments, such as Figure 1 As shown, the humidifier unit 1 can be directly mounted on the heating module 2. In some embodiments, it can be mounted via the body 7. Figures 3-4 As shown, the body 7 is used to house the humidifier unit 1. A heating module 2 is installed inside the body 7. The heat energy of the heating module 2 is transferred to the humidifier unit 1 when it is placed in the body 7. The body 7 can restrict the position of the humidifier unit 1, preventing it from easily shaking or moving during use.

[0113] This invention does not limit the placement of the in-situ detection module 3 and the water level detection module 4, as long as detection can be achieved. For example, they can be placed on the humidifier unit 1. The results detected by the detection modules can be transmitted wirelessly to the heating module 2 or transmitted via a wired connection through a connector. Alternatively, connectors can be provided at the bottom of the humidifier unit 1 and the top surface of the heating module 2 for insertion. When the humidifier unit 1 comes into contact with the heating module 2, the connectors are inserted to transmit the detection results. Or, in some embodiments, the in-situ detection module 3 and / or the water level detection module 4 are placed on the body 7. The in-situ detection module 3 and / or the water level detection module 4 detect the humidifier unit 1 when it is placed on the body 7. In this way, the humidifier unit 1 can be a simple tank without the need for additional detection modules, reducing the cost of the humidifier unit 1 and facilitating production and replacement.

[0114] In some embodiments, such as Figure 3 As shown, the water level detection module 4 is installed on the side wall of the body 7, directly opposite the humidifier unit 1. When the humidifier unit 1 is placed on the body 7, as shown... Figure 4 As shown, the water level detection module 4 detects the water level of the humidifier unit 1 by contacting the outer casing of the humidifier unit 1. This allows the water level detection module 4 to detect the water level when the humidifier unit 1 is placed in the body 7, facilitating water level detection.

[0115] In some embodiments, such as Figure 3As shown, the in-situ detection module 3 is located at the bottom of the body 7 corresponding to the humidifier unit 1. In some embodiments, it can also be located on the side wall of the body 7 corresponding to the humidifier unit 1. When the humidifier unit 1 is placed in the body 7, the in-situ detection module 3 detects the humidifier unit 1. In this way, the in-situ detection module 3 can realize in-situ detection when the humidifier unit 1 is placed in the body 7, which facilitates in-situ detection.

[0116] In some embodiments, based on the contact between the humidifier unit 1 and the heating module 2, a first presence detection result of the humidifier unit 1 is output, including: displacement caused by the pressure applied by the humidifier unit 1 to the heating module 2, or impedance change caused by the contact between the humidifier unit 1 and the heating module 2, or level change caused by the contact between the humidifier unit 1 and the heating module 2, or brightness change caused by the contact between the humidifier unit 1 and the heating module 2; the first presence detection result of the humidifier unit 1 is output.

[0117] In the embodiment where displacement is generated by applied pressure, the presence detection module 3 can be a microswitch mounted on the heating module 2. When the humidifier unit 1 is not placed on the heating module 2, the microswitch does not receive pressure and is open. When the humidifier unit 1 is placed on the heating module 2, the humidifier unit 1 applies pressure to the heating module 2, causing the microswitch to displace and conduct, thereby outputting a first presence detection result. In the embodiment where impedance change is generated, the presence detection module 3 can be two conductive contacts mounted on the heating module 2. When the humidifier unit 1 is not placed on the heating module 2, the two conductive contacts are open, resulting in high impedance. When the humidifier unit 1 is placed on the heating module 2, the conductor at the corresponding position of the conductive contacts in the humidifier unit 1 makes the conductive contacts conduct, reducing the impedance, thereby outputting a first presence detection result. In the embodiment where level change is generated, the presence detection module 3 can be a Hall sensor mounted on the heating module 2. When the humidifier unit 1 is not placed on the heating module 2, the Hall sensor does not detect the humidifier unit 1 and outputs a low level. When the humidifier unit 1 is placed on the heating module 2, the magnet at the position of the Hall sensor corresponding to the humidifier unit 1 is detected by the Hall sensor, and the Hall sensor outputs a high level, thereby outputting a first presence detection result. In the embodiment of the brightness change described above, the presence detection module 3 can be a photoelectric sensor installed on the heating module 2. When the humidifier unit 1 is not placed on the heating module 2, the photoelectric sensor does not detect the light reflected by the humidifier unit 1. When the humidifier unit 1 is placed on the heating module 2, the photoelectric sensor detects the light reflected by the humidifier unit 1, thereby outputting a first presence detection result. In this embodiment, the presence detection module 3 is described as being installed on the heating module 2. The presence detection module 3 can also be installed on the humidifier unit 1; that is, the presence detection module 3 in this embodiment can also be installed on the humidifier unit 1. Furthermore, in the embodiment with the body 7 described above, the presence detection module 3 in this embodiment can be installed on the body 7.

[0118] In some embodiments, the water level detection module 4 is used to detect specific parameters of the humidifier unit 1 to detect its water level, including: detecting the capacitance value of the humidifier unit 1 to detect its water level, or detecting the signal reflection time value of the humidifier unit 1 to detect its water level, or detecting the resistance value of the humidifier unit 1 to detect its water level, or detecting the image signal of the humidifier unit 1 to detect its water level. That is, the specific parameter can be a capacitance value, a time value, a resistance value, or an image signal. Therefore, the predetermined threshold in the above embodiments can be a predetermined capacitance threshold, a predetermined time threshold, a predetermined resistance threshold, or a predetermined image signal threshold.

[0119] In the embodiment where the specific parameter is capacitance, the water level detection module 4 can be a capacitive water level sensor installed on the side wall of the humidifier unit 1 or the side wall of the body 7. When the water level changes, the capacitance of the capacitive water level sensor changes. By detecting the capacitance value of the capacitive water level sensor, the water level can be calculated. When the capacitive water level sensor is installed on the side wall of the body 7, if the humidifier unit 1 is not placed on the body 7, the capacitive water level sensor detects a small capacitance value. Placing the humidifier unit 1 (even if it is a waterless humidifier unit 1) will increase the capacitance value. That is, by detecting the magnitude of the capacitance value, the presence or absence of the humidifier unit 1 can be detected.

[0120] In embodiments where the specific parameter is a time value, the water level detection module 4 can be an ultrasonic water level sensor or a light-reflecting water level sensor installed in the humidifier unit 1. The ultrasonic water level sensor or the light-reflecting water level sensor calculates the water level by emitting ultrasonic waves or light and then receiving the ultrasonic waves or light reflected by the water surface, and calculating the time interval between emission and reception.

[0121] In the embodiment where the specific parameter is resistance, the water level detection module 4 can be a resistive water level sensor installed in the humidifier unit 1. When the water level in the humidifier unit 1 changes, the resistance of the resistive water level sensor changes, and the water level is calculated by acquiring this resistance value.

[0122] In the embodiment where the specific parameter is an image signal, the water level detection module 4 can be a camera installed inside the humidifier unit 1 or an external camera. In this case, the humidifier unit 1 should be transparent to facilitate image signal acquisition. The water level is calculated based on the changes in the image signal after image signal acquisition. The water level detection module 4 can also employ infrared beam sensors, infrared reflection sensors, etc., as long as they can achieve water level detection in the humidifier unit 1.

[0123] According to another aspect of the present invention, the present invention provides a breathing aid device for heating and humidifying a gas stream delivered to a user, the breathing aid device mainly comprising a humidifier unit 1, a heating module 2, an in-situ detection module 3, and a water level detection module 4.

[0124] The humidifier unit 1 has an inlet port 11 and an outlet port 12. The humidifier unit 1 is configured to receive a gas flow through the inlet port 11, heat the water inside the humidifier unit 1 to heat and humidify the gas flow, and discharge the heated and humidified gas flow through the outlet port 12. The heating module 2 is used to provide heat energy to the humidifier unit 1 to heat the water inside the humidifier unit 1. The presence detection module 3 outputs a first presence detection result of the humidifier unit 1 based on the contact between the humidifier unit 1 and the heating module 2. The water level detection module 4 is used to detect specific parameters of the humidifier unit 1 to detect its water level, and outputs a water level detection result of the humidifier unit 1 based on the specific parameters. The heating module 2 determines whether to heat the humidifier unit 1 based on the first presence detection result and the water level detection result.

[0125] The features of the humidifier unit 1, heating module 2, presence detection module 3, and water level detection module 4 can be referred to the descriptions of the other embodiments above. In this embodiment, the water level detection module 4 is not limited to outputting a second presence detection result indicating whether the humidifier unit 1 is in place; as long as a water level detection result is output, it is acceptable. As mentioned above, the water level detection result is a numerical value. Then, the heating module 2 makes a comprehensive judgment based on the water level detection result and the first presence detection result to determine whether to heat the humidifier unit 1. Heating is only performed if the first presence detection result indicates the humidifier unit 1 is in place and the water level detection result is higher than a predetermined threshold (other cases can be referred to the descriptions of the above embodiments). This avoids the problem of inaccurate judgment using a single presence detection result. It improves the reliability of the presence detection judgment of the humidifier unit 1, making the presence detection function more stable. In other embodiments, the descriptions of the second presence detection result in the other embodiments above can be replaced with the water level detection result of this embodiment, which can be described as additional embodiments of this embodiment.

[0126] In some embodiments, when the water level detection module 4 detects specific parameters of the humidifier unit 1 to detect its water level, if the specific parameter is higher than a first predetermined threshold, it outputs the water level detection result of the humidifier unit 1; if the specific parameter is lower than a second predetermined threshold, it outputs that the humidifier unit 1 is not in place. The second predetermined threshold is less than or equal to the first predetermined threshold. By using the first predetermined threshold, the water level detection result of the humidifier unit 1 is not output when the specific parameter is lower than the first predetermined threshold, avoiding the output of excessively low water level detection results. Then, if the water level further decreases, the output "humidifier unit 1 is not in place" is displayed, and heating of the humidifier unit 1 is canceled after it is not in place, ensuring heating safety.

[0127] In some embodiments, the water level detection module 4 outputs specific parameters of the humidifier unit 1 only after the first presence detection result indicates that the humidifier unit 1 is in place. When the first presence detection result indicates that the humidifier unit 1 is not in place, the water level detection module 4 does not output specific parameters of the humidifier unit 1, reducing unnecessary output and improving the reliability of presence detection judgment. Subsequently, the specific parameters of the humidifier unit 1 and the water level detection result are only output after the first presence detection result indicates that the humidifier unit 1 is in place. The heating module 2 then determines to heat the humidifier unit 1 based on a comprehensive judgment of the first presence detection result and the water level detection result, further improving the reliability of presence detection judgment.

[0128] In some embodiments, such as Figures 3-4 As shown, it also includes: a body 7, which houses the humidifier unit 1. A heating module 2 is disposed within the body 7, and the heat from the heating module 2 is transferred to the humidifier unit 1 when it is placed within the body 7. The features of the body 7 can be referred to the descriptions of the other embodiments above. The body 7 can restrict the position of the humidifier unit 1, preventing it from easily shifting or moving during use.

[0129] According to another aspect of the present invention, the present invention provides a respiratory assist device, such as... Figure 5 As shown, the breathing aid device mainly includes a humidifier unit 1, a heating module 2, a first presence detection module 30, and a second presence detection module 40, which are used to heat and humidify the gas flow delivered to the user.

[0130] The humidifier unit 1 has an inlet port 11 and an outlet port 12. The humidifier unit 1 is configured to receive a gas flow through the inlet port 11, heat the water inside the humidifier unit 1 to heat and humidify the gas flow, and discharge the heated and humidified gas flow through the outlet port 12. The heating module 2 is used to provide heat energy to the humidifier unit 1 to heat the water inside the humidifier unit 1. The first presence detection module 30 is used to detect the position of the humidifier unit 1 and output a first presence detection result of the humidifier unit 1. The second presence detection module 40 is used to detect specific parameters of the humidifier unit 1 and output a second presence detection result. The heating module 2 determines whether to heat the humidifier unit 1 based on the first presence detection result and the second presence detection result.

[0131] The humidifier unit 1 and heating module 2 can be referred to the descriptions of the other embodiments above, and the features of the first presence detection module 30 and the second presence detection module 40 can be referred to the descriptions of the presence detection module 3 and water level detection module 4 in the other embodiments above. In this embodiment, the second presence detection module 40 directly outputs the second presence detection result indicating whether the humidifier unit 1 is in place. Then, the heating module 2 makes a comprehensive judgment based on the second presence detection result and the first presence detection result to determine whether to heat the humidifier unit 1. Heating is only performed if both the first and second presence detection results indicate that the humidifier unit 1 is in place (other cases can be referred to the descriptions of the above embodiments). This avoids the problem of inaccurate judgment using a single presence detection result. It improves the reliability of the presence detection judgment of the humidifier unit 1 and makes the presence detection function more stable.

[0132] In some embodiments, when the second presence detection module 40 detects specific parameters of the humidifier unit 1 and outputs a second presence detection result, if the specific parameter is higher than a first predetermined threshold, it outputs a water level detection result for the humidifier unit 1; if the specific parameter is lower than a second predetermined threshold, it outputs a second presence detection result indicating absence. The second predetermined threshold is less than or equal to the first predetermined threshold. If the specific parameter is higher than the second predetermined threshold, the second presence detection result indicates presence. In this embodiment, a water level detection result is only output when the specific parameter of the humidifier unit 1 is high. This way, when the water level is low, no water level detection result is output, avoiding the output of excessively low water level detection results.

[0133] In some embodiments, the second presence detection module 40 outputs specific parameters of the humidifier unit 1 only after the first presence detection result indicates that the humidifier unit 1 is in place. When the first presence detection result indicates that the humidifier unit 1 is not in place, the second presence detection module 40 does not output specific parameters of the humidifier unit 1, reducing unnecessary output and improving the reliability of presence detection judgment. Subsequently, the heating module 2 only outputs specific parameters of the humidifier unit 1 and the second presence detection result after the first presence detection result indicates that the humidifier unit 1 is in place, and then determines to heat the humidifier unit 1 based on a comprehensive judgment of the first and second presence detection results, further improving the reliability of presence detection judgment.

[0134] In some embodiments, such as Figures 3-4 As shown, it also includes: a body 7, which is used to house the humidifier unit 1, and a heating module 2 is provided inside the body 7. The heat energy of the heating module 2 is transferred to the humidifier unit 1 when the humidifier unit 1 is placed in the body 7. Figure 3The in-situ detection module 3 and the water level detection module 4 are replaced by the first in-situ detection module 30 and the second in-situ detection module 40, respectively. The features of the body 7 can be referred to the descriptions of the other embodiments above. The body 7 can restrict the position of the humidifier unit 1, preventing it from easily shaking or moving during use.

[0135] According to another aspect of the present invention, the present invention provides a medical device including a respiratory assist device according to any one of the embodiments of the present invention. The medical device of the present invention can be a ventilator. The medical device of the present invention includes two different means of detecting the position of the humidifier unit 1. The heating module 2 makes a comprehensive judgment based on these two detection results to jointly realize the detection of the presence of the humidifier unit 1, thereby determining whether to heat the humidifier unit 1. This avoids the problem of inaccurate judgment using a single presence detection result. It improves the reliability of the presence detection judgment of the humidifier unit 1, making the presence detection function of the humidifier unit 1 of the medical device more stable.

[0136] Finally, it should be noted that although the above embodiments have been described in the text and drawings of this application, this should not limit the scope of patent protection of this application. Any technical solutions that are based on the essential concept of this application and utilize the content described in the text and drawings of this application, resulting in equivalent structural or procedural substitutions or modifications, as well as the direct or indirect application of the technical solutions of the above embodiments to other related technical fields, are all included within the scope of patent protection of this application.

Claims

1. A breathing aid device for heating and humidifying a gas stream delivered to a user, characterized in that, include: A humidifier unit having an inlet port and an outlet port, the humidifier unit being configured to receive the gas flow through the inlet port, heat water within the humidifier unit to heat and humidify the gas flow, and discharge the heated and humidified gas flow through the outlet port; A heating module, which provides heat energy to the humidifier unit to heat the water inside the humidifier unit; The in-situ detection module outputs the first in-situ detection result of the humidifier unit based on the contact between the humidifier unit and the heating module. A water level detection module is used to detect specific parameters of the humidifier unit to detect its water level, and to output a second in-situ detection result of the humidifier unit based on the specific parameters. The heating module determines whether to heat the humidifier unit based on the first in-situ detection result and the second in-situ detection result.

2. The respiratory assist device according to claim 1, characterized in that, When the water level detection module detects specific parameters of the humidifier unit to detect its water level, if the specific parameter is higher than a first predetermined threshold, it outputs the water level detection result of the humidifier unit; if the specific parameter is lower than a second predetermined threshold, the second presence detection result is not present, and the second predetermined threshold is less than or equal to the first predetermined threshold.

3. The respiratory assist device according to claim 1, characterized in that, The heating module determines whether to heat the humidifier unit based on the first and second in-situ detection results, including: When either the first or second presence detection result is not present, the heating module does not heat the humidifier unit; when both the first and second presence detection results are present, the heating module heats the humidifier unit; or When either the first presence detection result or the second presence detection result indicates that the humidifier unit is in place, the heating module heats the humidifier unit; when neither the first presence detection result nor the second presence detection result indicates that the humidifier unit is out of place, the heating module does not heat the humidifier unit.

4. The respiratory assist device according to claim 3, characterized in that, The in-situ detection module and the water level detection module independently output the first in-situ detection result and the second in-situ detection result, or one of the in-situ detection module and the water level detection module determines whether to output the in-situ detection result based on the in-situ detection result of the other.

5. The respiratory assist device according to claim 3, characterized in that, When the first presence detection result is not present, the heating module determines not to heat the humidifier unit; When the first presence detection result is in place, the water level detection module outputs the second presence detection result; wherein, when the second presence detection result is in place, the heating module determines to heat the humidifier unit, and when the second presence detection result is not in place, the heating module determines not to heat the humidifier unit.

6. The respiratory assist device according to claim 3, characterized in that, When the second presence detection result is not present, the heating module determines not to heat the humidifier unit; When the second presence detection result is in place, the presence detection module outputs the first presence detection result; wherein, when the first presence detection result is in place, the heating module determines to heat the humidifier unit, and when the first presence detection result is not in place, the heating module determines not to heat the humidifier unit.

7. The respiratory assist device according to claim 3, characterized in that, When the first presence detection result is in place, the heating module determines to heat the humidifier unit; When the first presence detection result is not present, the water level detection module outputs the second presence detection result; wherein, when the second presence detection result is present, the heating module determines to heat the humidifier unit, and when the second presence detection result is not present, the heating module determines not to heat the humidifier unit.

8. The respiratory assist device according to claim 3, characterized in that, When the second presence detection result is in place, the heating module determines to heat the humidifier unit; When the second presence detection result is not present, the presence detection module outputs the first presence detection result; wherein, when the first presence detection result is present, the heating module determines to heat the humidifier unit, and when the first presence detection result is not present, the heating module determines not to heat the humidifier unit.

9. The respiratory assist device according to claim 1, characterized in that, When the second presence detection result or the first presence detection result changes from present to absent, the heating module stops heating the humidifier unit; or, When the second presence detection result or the first presence detection result changes from absent to present, the heating module heats the humidifier unit.

10. The respiratory assist device according to claim 1, characterized in that, The in-situ detection module outputs a first in-situ detection result cyclically at a first time interval; the water level detection module outputs a second in-situ detection result cyclically at a second time interval.

11. The respiratory assist device according to claim 1, characterized in that, When the water level detection module detects specific parameters of the humidifier unit to detect its water level, if the specific parameters are lower than a third predetermined threshold, it outputs that the humidifier unit is not in place.

12. The respiratory assist device according to claim 11, characterized in that, When the specific parameter is higher than a third predetermined threshold, the water level detection module detects the water level of the humidifier unit based on the specific parameter.

13. The respiratory assist device according to claim 1, characterized in that, It also includes a display module, which is used to display whether the humidifier unit is in place based on the first presence detection result and / or the second presence detection result.

14. The respiratory assist device according to claim 1, characterized in that, Also includes: The body is used to house the humidifier unit, and the heating module is provided inside the body. The heat energy of the heating module is transferred to the humidifier unit when the humidifier unit is placed in the body.

15. The respiratory assist device according to claim 14, characterized in that, The in-situ detection module and / or the water level detection module are mounted on the machine body, and the in-situ detection module and / or the water level detection module detect the humidifier unit when the humidifier unit is placed on the machine body.

16. The respiratory assist device according to claim 14, characterized in that, The water level detection module is located on the side wall of the body facing the humidifier unit. When the humidifier unit is placed on the body, the water level detection module detects its water level by contacting the outer shell of the humidifier unit.

17. The respiratory assist device according to claim 14, characterized in that, The in-situ detection module is located on the side wall or bottom of the body corresponding to the humidifier unit. When the humidifier unit is placed in the body, the in-situ detection module detects the humidifier unit.

18. The respiratory assist device according to claim 1, characterized in that, The water level detection module is installed on the humidifier unit.

19. The respiratory assist device according to claim 1, characterized in that, Based on the contact between the humidifier unit and the heating module, the first in-situ detection result of the humidifier unit is output, including: displacement caused by the pressure applied by the humidifier unit to the heating module, or impedance change caused by the contact between the humidifier unit and the heating module, or level change caused by the contact between the humidifier unit and the heating module, or brightness change caused by the contact between the humidifier unit and the heating module. The first in-situ detection result of the output humidifier unit.

20. The respiratory assist device according to claim 1, characterized in that, The water level detection module is used to detect specific parameters of the humidifier unit to detect its water level, including: the water level detection module is used to detect the capacitance value of the humidifier unit to detect its water level, or the water level detection module is used to detect the signal reflection time value of the humidifier unit to detect its water level, or the water level detection module is used to detect the resistance value of the humidifier unit to detect its water level, or the water level detection module is used to detect the image signal of the humidifier unit to detect its water level.

21. A breathing aid device for heating and humidifying a gas stream delivered to a user, characterized in that, include: A humidifier unit having an inlet port and an outlet port, the humidifier unit being configured to receive the gas flow through the inlet port, heat water within the humidifier unit to heat and humidify the gas flow, and discharge the heated and humidified gas flow through the outlet port; A heating module, which provides heat energy to the humidifier unit to heat the water inside the humidifier unit; The in-situ detection module outputs the first in-situ detection result of the humidifier unit based on the contact between the humidifier unit and the heating module. A water level detection module is used to detect specific parameters of the humidifier unit to detect its water level, and to output the water level detection result of the humidifier unit based on the specific parameters. The heating module determines whether to heat the humidifier unit based on the first in-situ detection result and the water level detection result.

22. The respiratory assist device according to claim 21, characterized in that, When the water level detection module detects specific parameters of the humidifier unit to detect its water level, if the specific parameter is higher than a first predetermined threshold, it outputs the water level detection result of the humidifier unit; if the specific parameter is lower than a second predetermined threshold, it outputs that the humidifier unit is not in place, and the second predetermined threshold is less than or equal to the first predetermined threshold.

23. The respiratory assist device according to claim 21, characterized in that, Only after the first in-situ detection result indicates that the humidifier is in place will the water level detection module output specific parameters of the humidifier unit.

24. The respiratory assist device according to claim 21, characterized in that, Also includes: The body is used to house the humidifier unit, and the heating module is provided inside the body. The heat energy of the heating module is transferred to the humidifier unit when the humidifier unit is placed in the body.

25. A breathing aid device for heating and humidifying a gas stream delivered to a user, characterized in that, include: A humidifier unit having an inlet port and an outlet port, the humidifier unit being configured to receive the gas flow through the inlet port, heat water within the humidifier unit to heat and humidify the gas flow, and discharge the heated and humidified gas flow through the outlet port; A heating module, which provides heat energy to the humidifier unit to heat the water inside the humidifier unit; The first in-situ detection module is used to detect the position of the humidifier unit and output the first in-situ detection result of the humidifier unit. The second in-situ detection module is used to detect specific parameters of the humidifier unit and output a second in-situ detection result. The heating module determines whether to heat the humidifier unit based on the first in-situ detection result and the second in-situ detection result.

26. The respiratory assist device according to claim 25, characterized in that, When the second in-situ detection module outputs a second in-situ detection result for a specific parameter of the humidifier unit, if the specific parameter is higher than a first predetermined threshold, it outputs a water level detection result for the humidifier unit; if the specific parameter is lower than a second predetermined threshold, it outputs a second in-situ detection result indicating that the humidifier unit is not in-situ. The second predetermined threshold is less than or equal to the first predetermined threshold.

27. The respiratory assist device according to claim 25, characterized in that, Only after the first presence detection result indicates that the humidifier unit is in place will the second presence detection module output specific parameters of the humidifier unit.

28. The respiratory assist device according to claim 25, characterized in that, Also includes: The body is used to house the humidifier unit, and the heating module is provided inside the body. The heat energy of the heating module is transferred to the humidifier unit when the humidifier unit is placed in the body.

29. A medical device comprising the respiratory assist device according to any one of claims 1 to 28.

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