Main machine structure of medical noninvasive breathing machine

Abstract

The utility model discloses a main machine structure of a medical noninvasive ventilator, which relates to the technical field of medical instruments and comprises a shell, a bottom cover plate is arranged at the outer end of the shell, and a metal plate framework is arranged on the inner wall of the shell. A gas circuit structure assembly, a battery management board, an AC / DC power module, a hardware circuit board, a turbine drive circuit board, an alternating current power supply input socket, an alternating current power supply input switch, a cooling fan and a battery which are matched with the interior of the shell are sequentially arranged on the inner wall of the metal plate framework. The sheet metal framework bears the strength and rigidity of most structures of the machine body, and is of a closed hexahedron structure, so that the stability of the whole structure is ensured; the hardware circuit can be further disassembled and maintained by disassembling the top plate of the shell; the gas circuit assembly can be further disassembled, assembled and maintained by disassembling the upper side plate of the metal plate framework, parts of the breathing machine do not need to be disassembled in a large range in order to disassemble and maintain a certain module, and good disassembly, assembly and maintenance convenience is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a mainframe structure of a medical non-invasive ventilator. Background Art

[0002] A ventilator is a device that can replace, control or change a person's normal physiological breathing, increase lung ventilation, improve respiratory function, reduce respiratory work consumption, and save heart reserve capacity. Depending on the way the ventilator is connected to the patient, medical ventilators are mainly divided into two categories, namely invasive ventilators and non-invasive ventilators. Among them, non-invasive ventilators are mainly used for patients with spontaneous breathing and are widely used in clinical departments such as respiratory department, emergency department, cardiology department and ICU.

[0003] Non-invasive ventilators can be divided into a main unit and a screen component. In order to meet the needs of clinical applications, the structural design of the ventilator main unit is generally complex, and it is necessary to fully consider the stability of the overall structure, the rationality of the internal layout, the adaptability of electromagnetic compatibility, the convenience of disassembly and maintenance, etc.; it is difficult for medical non-invasive ventilators to take into account the above structural design requirements. Utility Model Content

[0004] In response to the problems in the related art, the present invention proposes a medical non-invasive ventilator host structure to overcome the above technical problems existing in the existing related art.

[0005] To this end, the specific technical solutions adopted in this utility model are as follows:

[0006] A medical non-invasive ventilator host structure includes a shell, a bottom cover plate is provided at the outer end of the shell, a sheet metal frame is provided on the inner wall of the shell, and an air path structure component that matches the interior of the shell, a battery management board, an AC / DC power module, a hardware circuit board, a turbine drive circuit board, an AC power input socket, an AC power input switch, a cooling fan and a battery are sequentially provided on the inner wall of the sheet metal frame.

[0007] Furthermore, in order to facilitate disassembly and installation, the shell is composed of a front panel, a rear panel, a left panel, a right panel and an upper panel which are installed in sequence on the outside of the sheet metal frame; a through-hole is provided on the surface of the front panel; a heat sink, an AC power input socket opening, an AC power switch opening, a high-pressure oxygen source interface opening, a low-pressure oxygen source interface opening, a communication interface opening, an air intake cover plate and a grounding column opening are provided on one side of the rear panel in sequence; an air path connector opening, a proximal pressure detection opening, a left speaker opening, a blood oxygen detection opening, a carbon dioxide detection opening, an oxygen concentration sensor opening plate and a left air intake cover plate are provided on one side of the left panel in sequence; a right speaker opening and a right air intake cover plate are provided on one side of the right panel in sequence.

[0008] Furthermore, in order to avoid or reduce the impact of external forces on the use of the ventilator, rubber feet are provided at the bottom end of the bottom cover.

[0009] Furthermore, in order to have better overall structural stability, the sheet metal skeleton is composed of a bottom side panel, a left side panel, a right side panel, a rear side panel, a front side panel and an upper side panel which are sequentially arranged on the inner wall of the shell; the bottom end of the bottom side panel is sequentially provided with a battery opening, a battery management board opening and an AC / DC power module opening; the surface of the left side panel is sequentially installed with a proximal pressure detection air circuit interface, a left speaker, a blood oxygen detection interface, a carbon dioxide detection interface and an oxygen concentration sensor fixing bracket; the surface of the rear side panel is sequentially installed with a casing grounding column, a high-pressure oxygen source input connector opening, an air intake opening and a communication interface which match the air circuit structure component, the hardware circuit board, the cooling fan, the AC power input socket and the AC power input switch; the surface of the right side panel is It is equipped with a right speaker; a hinge support plate is provided on the surface of the front side panel; a wire hole is installed on the surface of the upper side panel for matching with the hardware circuit board and the turbine drive circuit board; the interior of the sheet metal skeleton is successively provided with a circuit sub-cavity, an air path sub-cavity, a power sub-cavity and a battery sub-cavity; the air path sub-cavity is formed by the power cover, the battery cover, the bottom side panel, the front side panel, the left side panel, the right side panel, the rear side panel and the upper side panel; the power sub-cavity is formed by the power cover and the bottom cover, and the power cover is fixed on the surface of the bottom side panel, the AC / DC power module and the battery management board are installed on the surface of the power cover, and the surfaces of the battery cover and the power cover are provided with mounting pillars, and the top of the mounting pillars is provided with a buffer cap; the battery cover is installed on the surface of the bottom cover.

[0010] Furthermore, in order to achieve the regulation of oxygen flow, the air path structure assembly is composed of high and low pressure oxygen input modules, oxygen flow sensors, air inlets, air-oxygen mixing modules, turbine blowers, air-oxygen mixing flow sensors, air-oxygen mixing integrated modules and air path connectors, which are sequentially arranged at the top of the rear side panel; a two-position three-way valve is arranged inside the air-oxygen mixing integrated module.

[0011] Furthermore, in order to expose the AC / DC power module and the battery management board by simply removing the bottom cover, and to facilitate further disassembly and maintenance of the AC / DC power module and the battery management board, the battery includes battery 1 and battery 2 arranged on the top of the bottom cover, and sponge is arranged between battery 1 and battery 2 and the battery cover and the bottom cover.

[0012] The beneficial effects of the utility model are:

[0013] 1. The sheet metal skeleton in the present invention bears the strength and rigidity of most of the body structure, and is a closed hexahedral structure to ensure the stability of the overall structure; the sheet metal sub-cavity is arranged according to the function to install the battery, power supply, gas path structure, hardware circuit, etc., and the structural hierarchy is clear; the sheet metal forms a closed cavity structure with better electrical safety and electromagnetic compatibility. At the same time, the sheet metal structure can be used for auxiliary heat dissipation. The shell is mainly decorative to ensure the appearance of the appearance; by removing the bottom plate, the battery and AC / DC power module can be further disassembled and maintained; by removing the top plate of the shell, the hardware circuit can be further disassembled and maintained; by removing the upper side plate of the sheet metal skeleton, the gas path assembly can be further disassembled and maintained, without the need to disassemble the ventilator parts on a large scale in order to disassemble and maintain a certain module, and it has better disassembly and maintenance convenience.

[0014] 2. The utility model only needs to remove the bottom cover to expose the AC / DC power module and the battery management board, which is convenient for further disassembly and maintenance of the AC / DC power module and the battery management board. Only the upper panel of the shell needs to be removed to expose the hardware circuit and the turbine drive board, which is convenient for further disassembly and maintenance of the hardware circuit board and the turbine drive board. Compared with the open cavity structure, the utility model has better overall structural stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 This is a schematic structural diagram of a medical non-invasive ventilator host structure according to an embodiment of the present utility model;

[0017] Figure 2 This is a schematic structural diagram of another angle of view of a main unit structure of a medical non-invasive ventilator according to an embodiment of the present utility model;

[0018] Figure 3 This is a schematic structural diagram of a sheet metal skeleton in a mainframe structure of a medical non-invasive ventilator according to an embodiment of the present utility model;

[0019] Figure 4 This is a structural diagram of another angle of the sheet metal frame in the main structure of a medical non-invasive ventilator according to an embodiment of the present invention.

[0020] Figure 5 This is one of the cross-sectional views of a mainframe structure of a medical non-invasive ventilator according to an embodiment of the present utility model;

[0021] Figure 6 This is a second cross-sectional view of the main unit structure of a medical non-invasive ventilator according to an embodiment of the present utility model.

[0022] In the picture:

[0023] 1. Housing; 101. Front panel; 1011. Through hole; 102. Rear panel; 1021. Heat sink; 1022. AC power input socket; 1023. AC power switch; 1024. High-pressure oxygen source interface; 1025. Low-pressure oxygen source interface; 1026. Communication interface; 1027. Air inlet cover; 1028. Grounding post; 103. Left panel; 1031. Gas line connector; 1032. Proximal pressure detection port; 1033. Left speaker port; 1034. Blood oxygen detection port; 1035. Dioxide Carbon detection hole; 1036, oxygen concentration sensor hole plate; 1037, left air inlet cover; 104, right panel; 1041, right speaker hole; 1042, right air inlet cover; 105, upper panel; 2, bottom cover; 201, rubber pads; 3, sheet metal frame; 31, circuit sub-cavity; 311, battery cover; 312, sponge; 32, air circuit sub-cavity; 321, power supply cover; 33, power supply sub-cavity; 34, battery sub-cavity; 301, bottom side panel; 3011, battery hole; 3012, battery management board hole; 3013, AC / DC power module Block opening; 302, left side panel; 303, right side panel; 304, rear side panel; 3041, high-pressure oxygen source input connector opening; 3042, air inlet opening; 305, front side panel; 3051, hinge support plate; 306, upper side panel; 3061, wire hole; 4, gas path structure components; 401, high and low pressure oxygen input module; 402, oxygen flow sensor; 403, air inlet; 404, air-oxygen mixing module; 405, turbine blower; 406, air-oxygen mixing flow sensor; 407, air-oxygen mixing integrated module; 408, gas path connector; 409, installation Pillar; 411, two-position three-way valve; 5. Battery management board; 6. AC / DC power module; 7. Hardware circuit board; 701, chassis grounding column; 702, communication interface; 7031, left speaker; 7032, right speaker; 704, blood oxygen detection interface; 705, carbon dioxide detection interface; 706, proximal pressure detection air circuit interface; 707, oxygen concentration sensor fixing bracket; 8, turbine drive circuit board; 9, AC power input socket; 10, AC power input switch; 11, cooling fan; 12, battery; 1201, battery one; 1202, battery two. DETAILED DESCRIPTION

[0024] To further illustrate each embodiment, the present invention provides drawings, which are part of the disclosure of the present invention and are mainly used to illustrate the embodiments. They can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. By referring to these contents, ordinary technicians in this field should be able to understand other possible implementation methods and the advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0025] According to an embodiment of the present utility model, a medical non-invasive ventilator host structure is provided.

[0026] The present invention will now be further described with reference to the accompanying drawings and specific embodiments. Figures 1-6 As shown, the main structure of the medical non-invasive ventilator according to the embodiment of the present invention includes a shell 1, which is characterized in that a bottom cover plate 2 is provided at the outer end of the shell 1, a sheet metal frame 3 is provided on the inner wall of the shell 1, and an air path structure component 4, a battery management board 5, an AC / DC power module 6, a hardware circuit board 7, a turbine drive circuit board 8, an AC power input socket 9, an AC power input switch 10, a cooling fan 11 and a battery 12 are provided on the inner wall of the sheet metal frame 3 in sequence.

[0027] With the help of the above technical solution, the utility model only needs to remove the bottom cover plate 2 to expose the AC / DC power module 6 and the battery management board 321, which is convenient for further disassembly and maintenance of the AC / DC power module 6 and the battery management board 321. Only the upper panel 105 of the outer shell needs to be removed to expose the hardware circuit 7 and the turbine drive board 8, which is convenient for further disassembly and maintenance of the hardware circuit board 7 and the turbine drive board 8. Compared with the open cavity structure, it has better overall structural stability.

[0028] In one embodiment, the housing 1 is composed of a front panel 101, a rear panel 102, a left panel 103, a right panel 104, and an upper panel 105, which are sequentially mounted on the outside of the sheet metal frame 3; a through hole 1011 is provided on the surface of the front panel 101; a heat sink 1021, an AC power input socket opening 1022, an AC power switch opening 1023, a high-pressure oxygen source interface opening 1024, a low-pressure oxygen source interface opening 1025, a communication Interface opening 1026, air inlet cover 1027 and grounding column opening 1028; one side of the left panel 103 is sequentially provided with an air path connector opening 1031, a proximal pressure detection opening 1032, a left speaker opening 1033, a blood oxygen detection opening 1034, a carbon dioxide detection opening 1035, an oxygen concentration sensor opening 1036 and a left air inlet cover 1037; one side of the right panel 104 is sequentially provided with a right speaker opening 1041 and a right air inlet cover 1042, so as to facilitate disassembly and installation.

[0029] In one embodiment, for the bottom cover plate 2, a rubber foot 201 is provided at the bottom end of the bottom cover plate 2, thereby avoiding or reducing the influence of external force on the use of the ventilator.

[0030] It should be noted that the bottom cover 2 is connected to the sheet metal frame 3 by screws, which plays the role of supporting the entire host. Rubber pads 201 are also provided under the bottom cover 2. The rubber pads 201 are used for buffering and shock absorption to avoid or reduce the impact of external forces on the use of the ventilator.

[0031] In one embodiment, the sheet metal frame 3 is composed of a bottom side plate 301, a left side plate 302, a right side plate 303, a rear side plate 304, a front side plate 305 and an upper side plate 306 which are sequentially arranged on the inner wall of the housing 1; a battery opening 3011, a battery management board opening 3012 and an AC / DC power module opening 3013 are sequentially opened at the bottom end of the bottom side plate 301; a proximal pressure detection air circuit interface 706, a left speaker 706 and a left side plate 307 are sequentially installed and fixed on the surface of the left side plate 302. 031, blood oxygen detection interface 704, carbon dioxide detection interface 705 and oxygen concentration sensor fixing bracket 707; the surface of the rear side panel 304 is sequentially installed with the chassis grounding column 701 that matches the air path structure component 4, hardware circuit board 7, cooling fan 11, AC power input socket 9 and AC power input switch 10, high-pressure oxygen source input connector hole 3041, air intake hole 3042 and communication interface 702; the surface of the right side panel 303 is installed with the right speaker 7032; The surface of the front side panel 305 is provided with a hinge support plate 3051; the surface of the upper side panel 306 is provided with a wire hole 3061 that matches the hardware circuit board 7 and the turbine drive circuit board 8; the interior of the sheet metal frame 3 is provided with a circuit sub-cavity 31, an air path sub-cavity 32, a power sub-cavity 33 and a battery sub-cavity 34 in sequence; the air path sub-cavity 32 is composed of a power cover 321, a battery cover 311, a bottom side panel 301, a front side panel 305, a left side panel 302, a right side panel 303 and a rear side panel 304, The upper side plate 306 is enclosed; the power sub-cavity 33 is enclosed by the power cover 321 and the bottom cover 2, and the power cover 321 is fixed to the surface of the bottom side plate 301, the AC / DC power module 6 and the battery management board 5 are installed on the surface of the power cover 321, and the battery cover 311 and the surface of the power cover 321 are provided with mounting pillars 409, and the top of the mounting pillars 409 is provided with a buffer cap; the battery cover 311 is installed on the surface of the bottom cover 2, so as to have better overall structural stability.

[0032] In addition, it should be noted that the front panel, rear panel, left panel, right panel, and upper panel of the sheet metal frame have corresponding openings or installation positions to facilitate the installation of components such as air path components, AC power input sockets, AC power input switches, cooling fans, speakers, and interaction with the outside world. At the same time, it also facilitates the interaction of components between the sub-cavities.

[0033] In one embodiment, for the above-mentioned air path structure component 4, the air path structure component 4 is composed of a high-pressure and low-pressure oxygen input module 401, an oxygen flow sensor 402, an air inlet 403, an air-oxygen mixing module 404, a turbine blower 405, an air-oxygen mixing flow sensor 406, an air-oxygen mixing integrated body module 407 and an air path connector 408, which are sequentially arranged at the top of the rear side plate 304; a two-position three-way valve 411 is arranged inside the air-oxygen mixing integrated body module 407 to achieve the regulation of the oxygen flow.

[0034] In addition, it should be noted that the high- and low-pressure oxygen input module 401 is the interface for inputting the ventilator into the external oxygen source, which can input high-pressure oxygen and low-pressure oxygen, expanding the scope of use of the ventilator and playing the role of input oxygen filtering, voltage stabilization and rectification. The oxygen flow sensor 402 is used to detect the flow of oxygen and feed it back to the hardware circuit 7. The hardware circuit 7 controls the speed of the turbine blower 405 to achieve the regulation of the oxygen flow. The turbine blower 405 achieves timely adjustment of the oxygen flow and pressure by changing the speed of the turbine. The air-oxygen mixed flow sensor 406 is used to detect the flow of the gas after mixing oxygen and air. The air-oxygen mixed integrated body module 407 is internally provided with a complex airway, which is used in conjunction with the two-position three-way valve 411 to realize the calibration and working mode switching of the ventilator. The air path connector 408 is used to connect the tracheal mask.

[0035] In one embodiment, for the above-mentioned battery 12, the battery 12 includes a battery 1 1201 and a battery 2 1202 arranged at the top of the bottom cover 2, and a sponge 312 is arranged between the battery 1 1201 and the battery 2 1202 and the battery cover 311 and the bottom cover 2, so that the AC / DC power module 6 and the battery management board 321 can be exposed by simply removing the bottom cover 2, which facilitates further disassembly and maintenance of the AC / DC power module 6 and the battery management board 321.

[0036] In addition, it should be noted that there are more than two batteries 12, one of which is pre-installed and should be disassembled as much as possible. When the external AC input fails, this battery provides power protection; the other battery is optional and is mainly used to increase the battery life of the ventilator when there is a lack of AC input. It can be disassembled and installed as needed.

[0037] In order to facilitate understanding of the above technical solutions of the present invention, the working principle or operation method of the present invention in actual process is described in detail below.

[0038] In actual application, it is only necessary to remove the bottom cover plate 2 to expose the AC / DC power module 6 and the battery management board 321, which is convenient for further disassembly and maintenance of the AC / DC power module 6 and the battery management board 321. It is only necessary to remove the upper panel 105 of the outer shell to expose the hardware circuit 7 and the turbine drive board 8, which is convenient for further disassembly and maintenance of the hardware circuit board 7 and the turbine drive board 8. Compared with the open cavity structure, it has better overall structural stability.

[0039] In summary, with the help of the above technical solution of the present invention, the present invention only needs to remove the bottom cover plate 2 to expose the AC / DC power module 6 and the battery management board 321, which is convenient for further disassembly and maintenance of the AC / DC power module 6 and the battery management board 321, and only needs to remove the upper panel 105 of the shell to expose the hardware circuit 7 and the turbine drive board 8, which is convenient for further disassembly and maintenance of the hardware circuit board 7 and the turbine drive board 8, and has better overall structural stability compared with the open cavity structure; the sheet metal skeleton in the present invention bears the strength and rigidity of most of the body structure, and is a closed hexahedron structure to ensure the stability of the overall structure; the sheet metal sub-cavity is arranged according to the power The battery, power supply, gas path structure, hardware circuit, etc. can be arranged and installed separately, and the structural hierarchy is clear; the sheet metal forms a closed cavity structure, which has excellent electrical safety and electromagnetic compatibility. At the same time, the sheet metal structure can be used for auxiliary heat dissipation. The shell is mainly decorative to ensure the appearance of the appearance; by removing the bottom plate, the battery 12 and the AC / DC power module 6 can be further disassembled and maintained; by removing the top plate of the shell 1, the hardware circuit can be further disassembled and maintained; by removing the upper side plate 306 of the sheet metal skeleton 3, the gas path assembly can be further disassembled and maintained, without the need to disassemble the ventilator parts on a large scale in order to disassemble and maintain a certain module, and it has good disassembly and maintenance convenience.

[0040] In the present invention, unless otherwise clearly stipulated and limited, the terms "install", "set", "connect", "fix", "screw" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0041] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A medical non-invasive ventilator host structure, comprising a housing (1), characterized in that: The outer end of the housing (1) is provided with a bottom cover plate (2), the inner wall of the housing (1) is provided with a sheet metal frame (3), and the inner wall of the sheet metal frame (3) is provided with an air path structure component (4) that matches the interior of the housing (1), a battery management board (5), an AC / DC power module (6), a hardware circuit board (7), a turbine drive circuit board (8), an AC power input socket (9), an AC power input switch (10), a cooling fan (11) and a battery (12) in sequence.

2. A medical non-invasive ventilator host structure according to claim 1, characterized in that: The housing (1) is composed of a front panel (101), a rear panel (102), a left panel (103), a right panel (104) and an upper panel (105) which are sequentially mounted on the outside of the sheet metal frame (3); A via (1011) is provided on the surface of the front panel (101); One side of the rear panel (102) is provided with a heat sink (1021), an AC power input socket opening (1022), an AC power switch opening (1023), a high-pressure oxygen source interface opening (1024), a low-pressure oxygen source interface opening (1025), a communication interface opening (1026), an air inlet cover plate (1027) and a grounding column opening (1028). One side of the left panel (103) is provided with an air path connector opening (1031), a proximal pressure detection opening (1032), a left speaker opening (1033), a blood oxygen detection opening (1034), a carbon dioxide detection opening (1035), an oxygen concentration sensor orifice (1036) and a left air inlet cover (1037) in sequence; A right speaker opening (1041) and a right air inlet cover (1042) are sequentially provided on one side of the right panel (104).

3. A medical non-invasive ventilator host structure according to claim 2, characterized in that: The bottom end of the bottom cover plate (2) is provided with a rubber pad (201).

4. A medical non-invasive ventilator host structure according to claim 3, characterized in that: The sheet metal frame (3) is composed of a bottom side plate (301), a left side plate (302), a right side plate (303), a rear side plate (304), a front side plate (305) and an upper side plate (306) which are sequentially arranged on the inner wall of the shell (1); The bottom end of the bottom side plate (301) is sequentially provided with a battery opening (3011), a battery management board opening (3012) and an AC / DC power module opening (3013); The surface of the left side panel (302) is fixedly mounted with a proximal pressure detection air circuit interface (706), a left speaker (7031), a blood oxygen detection interface (704), a carbon dioxide detection interface (705) and an oxygen concentration sensor fixing bracket (707) in sequence; The surface of the rear side panel (304) is sequentially mounted with a housing grounding column (701) that matches the air path structure component (4), the hardware circuit board (7), the cooling fan (11), the AC power input socket (9) and the AC power input switch (10), a high-pressure oxygen source input connector hole (3041), an air intake hole (3042) and a communication interface (702); A right speaker (7032) is installed on the surface of the right side panel (303); A hinge support plate (3051) is provided on the surface of the front side plate (305); The surface of the upper side plate (306) is provided with a wire hole (3061) that matches the hardware circuit board (7) and the turbine drive circuit board (8); The sheet metal frame (3) is provided with a circuit sub-cavity (31), an air path sub-cavity (32), a power sub-cavity (33) and a battery sub-cavity (34) in sequence inside; The air path sub-cavity (32) is formed by a power supply cover (321), a battery cover (311), a bottom side plate (301), a front side plate (305), a left side plate (302), a right side plate (303), a rear side plate (304), and an upper side plate (306); The power sub-cavity (33) is formed by enclosing a power cover plate (321) and the bottom cover plate (2), and the power cover plate (321) is fixed on the surface of the bottom side plate (301), and the AC / DC power module (6) and the battery management board (5) are mounted on the surface of the power cover plate (321).

5. A medical non-invasive ventilator host structure according to claim 4, characterized in that: The surfaces of the battery cover plate (311) and the power supply cover plate (321) are provided with mounting pillars (409), and the top ends of the mounting pillars (409) are provided with buffer caps; The battery cover plate (311) is mounted on the surface of the bottom cover plate (2).

6. A medical non-invasive ventilator host structure according to claim 5, characterized in that: The gas path structural assembly (4) is composed of a high-pressure and low-pressure oxygen input module (401), an oxygen flow sensor (402), an air inlet (403), an air-oxygen mixing module (404), a turbine blower (405), an air-oxygen mixing flow sensor (406), an air-oxygen mixing integrated module (407), and a gas path connector (408), which are sequentially arranged on the top of the rear side plate (304); A two-position three-way valve (411) is provided inside the air-oxygen mixing integrated body module (407).

7. A medical non-invasive ventilator host structure according to claim 6, characterized in that: The battery (12) includes a battery 1 (1201) and a battery 2 (1202) arranged at the top of the bottom cover (2), and a sponge (312) is arranged between the battery 1 (1201) and the battery 2 (1202), the battery cover (311) and the bottom cover (2).

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