Protective isolation hood

Abstract

The application relates to a protective isolation head cover which comprises a fixed base cover, a rotating auxiliary cover, a base cover sliding seat and a guide rail supporting seat, the guide rail supporting seat is connected with the base cover sliding seat, the fixed base cover is arranged on the base cover sliding seat, the rotating auxiliary cover is rotatably arranged on the fixed base cover, one end of the rotating auxiliary cover, which is away from the fixed base cover, is provided with a first isolation soft film, the fixed base cover, the rotating auxiliary cover and the first isolation soft film form a protection space, a filter box is arranged on the fixed base cover and located in the protection space, a disinfecting filter screen is arranged on the filter box, a first exhaust port is arranged on the guide rail supporting seat, an exhaust fan for exhausting air in the protection space is arranged in the first exhaust port, the exhaust fan is connected with a power supply, and the first exhaust port and the filter box are communicated through a first pipeline; the technical problem that a non-closed device in the prior art cannot isolate and protect the end emergency link is solved.

Description

Technical Field

[0001] This invention relates to the field of protective headgear technology, specifically to a protective isolation headgear. Background Technology

[0002] Possible transmission routes for viruses include droplet transmission, close contact transmission, and aerosol transmission in enclosed environments. Clearly, cutting off the transmission routes is a crucial aspect of protective measures against respiratory infectious diseases. These measures can be categorized into two types: passive protection when the virus source is unknown, including personal protective equipment (such as masks) and protective clothing for healthcare workers; and active protection when the virus source is known, including all necessary isolation measures such as setting up isolation wards, residential isolation, and isolation in negative pressure ambulances used for patient transport.

[0003] In active isolation and protection measures, for patients who need to be transferred, especially critically ill patients who urgently need rescue and treatment, special medical rescue equipment is needed to transfer patients from their place of residence to the isolation and treatment ward of the hospital. There are two basic types of special medical rescue equipment available: closed and non-closed. The use of closed special equipment has many defects and is not applicable, and it has been gradually abandoned by the medical system. Among the non-closed special equipment, the special equipment based on negative pressure anti-diffusion has a very obvious protective effect, is reliable, and has good operability, and is valued and adopted by the medical system. To this end, the Ministry of Health has put forward relevant technical requirements for the research and development and use of negative pressure protection equipment and formulated relevant industry standards: (1) Relative pressure: When the negative pressure device is started, the relative pressure inside the chamber should be between -30pa and -10pa. (2) High efficiency filter: The air filter should have a filtration rate of more than 99.7% for particulate aerosols with a particle size of 0.3 microns. (3) Structure and composition: The air purification system should consist of an air inlet, a purification exhaust device, and a control and monitoring device. The purification and exhaust system consists of an exhaust fan and an air filter and sterilizer. The air filter and sterilizer should be installed at the intake of the purification and exhaust system. The air inlet and outlet should be arranged diagonally according to the principle of top intake and bottom exhaust, and front intake and rear exhaust. The control and detection devices should be placed in the driver's cab for easy operation and control. (4) Function: To create a relative negative pressure state in the ambulance cabin, so that the air inside the cabin will not diffuse outward arbitrarily. The reasonable arrangement of the air inlet and outlet makes the air inside the cabin form a relatively stable airflow, minimizing the cross-contamination sources between medical staff and patients during transportation and transfer. The air inside the cabin is uniformly discharged outside the vehicle after being purified by the high-efficiency air filter device and the ultraviolet sterilization device through the exhaust vent, ensuring the safety of the environment.

[0004] The transfer of a patient from their location to the hospital's isolation ward involves three stages: the first stage is the patient's transfer from their location to the ambulance; the second stage is the patient's time in the ambulance; and the third stage is the transfer from the ambulance to the isolation ward. During these three stages, medical staff, as close contacts of the patient, are exposed to high-risk working environments, especially during the transfers between stages. Therefore, it is crucial to ensure the absolute safety of medical staff from infection within and between each stage.

[0005] Based on the above issues, some organizations have specifically developed and produced negative pressure ambulances for the second stage of patient care, where patients are in the ambulance. These products can ensure the absolute safety of medical personnel during this stage, preventing infection. However, four problems still exist in practical use: ① The efficiency of air convection in purifying contaminants within the medical cabin needs improvement, especially since the space inside a negative pressure ambulance is generally 6-8 m³, which is quite large. After the negative pressure purification system is activated, the relative pressure can only reach around -30 Pa, resulting in very low relative efficiency; ② The sealing performance of the medical cabin needs improvement; ③ The stability of the negative pressure system in the use of heating and cooling air conditioning; ④ Lack of protection for the first 100 meters; ⑤ Lack of protection for the last 100 meters.

[0006] Regarding the absolute safety of healthcare workers in Phases 1 and 3 from infection, there are currently no fully mature technological approaches or products. Existing technologies include negative pressure isolation chambers and semi-enclosed isolation devices. Negative pressure isolation chambers have drawbacks such as cumbersome operation procedures, poor comfort, low emergency response efficiency, lack of virus disinfection, and potential safety hazards in emergencies, such as power outages. Furthermore, these products offer limited isolation extension for patients, leading to their gradual abandonment by medical institutions. Semi-enclosed isolation devices can only be used in ambulances and cannot meet the protection requirements of the final emergency stage, i.e., the transfer of patients from the ground to the ambulance and from the ambulance to the hospital's isolation ward. During this transfer, there is still a possibility of infection for healthcare workers and those around them. Summary of the Invention

[0007] In view of the shortcomings of the existing technology, the purpose of this invention is to provide an isolation and protective headgear that can play a role in isolation and protection during the transfer of patients from home to ambulance and from ambulance to hospital isolation ward.

[0008] To solve the above-mentioned technical problems, the present invention provides a protective isolation headgear, including a fixed base cover, a rotating sub-cover, a base cover sliding seat, and a guide rail support seat. The guide rail support seat is connected to the base cover sliding seat. The fixed base cover is disposed on the base cover sliding seat. The rotating sub-cover is rotatably disposed on the fixed base cover. A first isolation membrane is provided on the rotating sub-cover at one end away from the fixed base cover. The fixed base cover, the rotating sub-cover, and the first isolation membrane constitute a protective space. A filter box is provided on the fixed base cover. The filter box is located within the protective space and is provided with a disinfection filter screen. A first exhaust port is provided on the guide rail support seat. An exhaust fan for discharging air from the protective space is provided in the first exhaust port. The exhaust fan is connected to a power source. The first exhaust port and the filter box are connected through a first pipeline.

[0009] With the above structure, the protective isolation headgear of the present invention has the following advantages: During the transfer of a patient from their location to the ambulance, and from the ambulance to the hospital isolation ward, the patient's head is located within the protective space. An exhaust fan discharges air from the protective space through a first pipe and from the first exhaust port, preventing air from escaping through any gaps other than the first exhaust port. This creates a safe negative pressure environment within the protective space. Furthermore, when the air passes through the filter box, the disinfection filter screen filters aerosols in the air, achieving a filtration efficiency of over 99.7% for particles with a diameter of 0.3 micrometers, blocking the leakage of infectious sources and ensuring the cleanliness and safety of medical personnel and the surrounding environment. Simultaneously, the disinfection filter screen can disinfect virus-carrying aerosols, further improving the protection during transport. This invention provides effective protection and isolation, preventing infection of medical staff or the general public, addressing the protection requirements of the final emergency care stage, and ensuring patient comfort. It also improves the convenience and efficiency of emergency rescue measures implemented by medical staff during ambulance transport, while simultaneously considering patient comfort, comprehensive epidemic prevention requirements, and the convenience and efficiency of emergency care. This invention effectively solves the problem of absolute safety for medical staff in the first and third stages of the epidemic, and effectively improves five practical problems encountered in the practical use of negative pressure ambulances in the second stage. Furthermore, it facilitates medical staff in providing highly humane and comfortable emergency treatment to patients in terms of usability, convenience, and emergency care functions. It also solves the following four problems existing in current ambulances:

[0010] (1) The efficiency of air convection in purifying pollution sources in the medical cabin needs to be improved;

[0011] (2) The airtightness of the medical cabin needs to be improved;

[0012] (3) The stability of the negative pressure system used in air conditioning (heating and cooling);

[0013] (4) Lack of protection for the last hundred meters;

[0014] (5) Protection within 100 meters before rescue.

[0015] As an improvement, a second exhaust port is provided on the fixed base cover, and a second pipeline is detachably connected to the second exhaust port. The second pipeline is connected to an external negative pressure source. With this structure, after the patient is sent to the ambulance or hospital isolation ward, the negative pressure source is connected through the second exhaust port and the second pipeline, and stable isolation and protection are directly achieved through the negative pressure source.

[0016] As an improvement, a sealing plate is connected to the fixed base cover. When the second pipe is not connected to the second exhaust port, the sealing plate seals the second exhaust port. When the second pipe is connected to the second exhaust port, the second pipe pushes the sealing plate away from the second exhaust port, allowing the second pipe to connect to the protective space. With this structure, when the second pipe is not connected to the second exhaust port, the exposed second exhaust port is prone to causing air leakage from the protective space. However, the sealing plate prevents air leakage from the cover after sealing the second exhaust port. The sealing plate is automatically pushed open when the second pipe is inserted, without the need for manual opening, making it safer and more convenient to use.

[0017] As an improvement, the present invention also includes a switch, and a sensor for sensing the second pipeline is provided at the second exhaust port. The switch, the sensor and the power supply are electrically connected. With this structure, the sensor senses whether the second pipeline is connected or not. When the second pipeline is not connected, the power supply is controlled by the sensor to make the exhaust fan rotate and start filtering and disinfection. When the second pipeline is connected, the power supply is turned off. If necessary, the switch can be used to directly control the opening and closing of the exhaust fan.

[0018] As an improvement, the base cover sliding seat is provided with a guide rail on its side, and the guide rail support seat is provided with a guide rail groove block on its side. The guide rail groove block and the guide rail are slidably connected in the horizontal direction, so that the base cover sliding seat and the guide rail support seat are slidably connected. The base cover sliding seat is also provided with a locking component for fixing the base cover sliding seat and the guide rail support seat. With this structure, since the present invention needs to be used with a stretcher or hospital bed, the setting of the guide rail and the guide rail groove block allows the base cover sliding seat to slide relative to the guide rail support seat, thereby driving the fixed base cover and the rotating secondary cover to move, which facilitates the patient getting on and off the stretcher or hospital bed. After the patient is already lying on the stretcher or hospital bed, the base cover sliding seat is slid to move the fixed base cover and the rotating secondary cover to the position of the patient's head.

[0019] As an improvement, the base cover sliding seat is equipped with a push-pull handle and an unlock button at one end. The locking component is connected to an electric push rod, and the unlock button is electrically connected to the electric push rod. With this structure, the base cover sliding seat can be easily pushed and pulled by the push-pull handle. Moreover, the push-pull handle and the unlock button are located at the same end of the base cover sliding seat, which makes it convenient to press the unlock button directly to control the electric push rod when pushing and pulling, so that the locking component unlocks the base cover sliding seat from the guide rail support seat, making it more convenient to use.

[0020] As an improvement, the first tube is a retractable tube; with this structure, after the base cover sliding seat slides relative to the guide rail support seat, the distance between the fixed base cover and the guide rail support seat becomes longer. At this time, the first tube is stretched to prevent the excessively long first tube from occupying the space in the protective space and causing discomfort to the patient.

[0021] As an improvement, a second insulating membrane is connected between the base cover sliding seat and the guide rail support seat. With this structure, after the base cover sliding seat slides relative to the guide rail support seat, the second insulating membrane can isolate the gap between the base cover sliding seat and the guide rail support seat, further enhancing the protective and isolation effect.

[0022] As an improvement, a secondary cover shaft is provided on the fixed base cover, and the rotating secondary cover is rotatably mounted on the secondary cover shaft. A motor for driving the rotating secondary cover is externally connected to the rotating secondary cover. With this structure, the rotating secondary cover can be automatically controlled by the motor, or it can be manually adjusted by directly rotating the rotating secondary cover, which is more convenient to use.

[0023] As an improvement, both the fixed base cover and the rotating sub-cover are made of antibacterial and flame-retardant materials; this structure further enhances the protective effect and safety of the invention. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention.

[0025] Figure 2 This is a schematic diagram of the overall three-dimensional structure of the present invention from another angle.

[0026] Figure 3 This is a schematic diagram of the internal structure of the fixed base cover in this invention.

[0027] Figure 4 This is an exploded structural diagram of the base cover sliding seat and the guide rail support seat in this invention.

[0028] Reference numerals in the attached drawings: 1. Fixed base cover; 2. Rotating secondary cover; 3. Base cover sliding seat; 4. Guide rail support seat; 5. First isolation membrane; 6. Filter box; 7. Disinfection filter screen; 8. First exhaust port; 9. Exhaust fan; 10. First pipeline; 11. Second exhaust port; 12. Second pipeline; 13. Sealing plate; 14. Guide rail; 15. Guide rail guide groove block; 16. Push-pull handle; 17. Unlock button; 18. Second isolation membrane; 19. Secondary cover rotating shaft; 20. Motor. Detailed Implementation

[0029] The protective isolation headgear of the present invention will be described in detail below with reference to the accompanying drawings.

[0030] like Figures 1 to 4As shown, a protective isolation headgear includes a fixed base cover 1, a rotating secondary cover 2, a base cover sliding seat 3, and a guide rail support 4. Both the fixed base cover 1 and the rotating secondary cover 2 are made of antibacterial and flame-retardant material. The guide rail support 4 connects to the base cover sliding seat 3. The fixed base cover 1 is mounted on the base cover sliding seat 3. During use, the guide rail support 4 is connected to a stretcher or hospital bed and remains relatively stationary with it, and can connect to various different stretchers or hospital beds. The rotating secondary cover 2 is rotatably mounted on the fixed base cover 1. A section of the rotating secondary cover 2 that is away from the fixed base cover 1... The first isolation membrane 5 is provided at the end. The fixed base cover 1, the rotating secondary cover 2 and the first isolation membrane 5 form a protective space. The fixed base cover 1 is provided with a filter box 6, which is located in the protective space. The filter box 6 is provided with a disinfection filter screen 7. The guide rail support 4 is provided with a first exhaust port 8. The first exhaust port 8 is provided with an exhaust fan 9 for exhausting the air in the protective space. The exhaust fan 9 is connected to a power source. The first exhaust port 8 and the filter box 6 are connected through a first pipe 10. In this embodiment, there are two of each of the first exhaust port 8, exhaust fan 9 and first pipe 10.

[0031] like Figure 2 and Figure 3 As shown, the fixed base cover 1 is also provided with a second exhaust port 11, and a second pipe 12 is detachably connected to the second exhaust port 11. The second pipe 12 can be connected to an external negative pressure source. A sealing plate 13 is connected to the fixed base cover 1. The sealing plate 13 is located in the protective space. When the second pipe 12 is not connected to the second exhaust port 11, the sealing plate 13 seals the second exhaust port 11. When the second pipe 12 is connected to the second exhaust port 11, the second pipe 12 pushes the sealing plate 13 away from the second exhaust port 11 and makes the second pipe 12 connect to the protective space. A sensor for sensing the second pipe 12 is provided at the second exhaust port 11. The present invention is also equipped with a switch. The switch, the sensor and the power supply are electrically connected to the power supply for the opening and closing of the exhaust fan 9.

[0032] During the patient's transport from home to the ambulance and from the ambulance to the hospital isolation ward, the patient's head is located within a protective space. Air from this space is exhausted through the first exhaust port 8 via the first pipe 10, following the path determined by smoke testing, creating a unidirectional, stable negative pressure exhaust flow field. This forms a safe negative pressure environment within the protective space. Furthermore, as the air passes through the filter box 6, the disinfection filter 7 filters aerosols, achieving a filtration efficiency of over 99.7% for particles with a diameter of 0.3 micrometers, preventing the leakage of infectious sources and ensuring a clean and safe environment around the patient, thus protecting medical personnel. The disinfection filter 7 in this invention is a long-lasting antibacterial filter with self-disinfection capabilities, capable of disinfecting virus-laden aerosols. It has a service life of up to three months, offering high disinfection reliability and further enhancing the protective isolation effect during transport. This prevents infection of medical personnel, addresses the protection requirements of the final emergency stage, meets patient comfort requirements, and improves the convenience and efficiency of emergency rescue measures implemented by medical personnel during ambulance transport. Taking into account patient comfort, comprehensive epidemic prevention requirements, and the convenience and efficiency of emergency care, after the patient is transported to an ambulance or hospital isolation ward, the protection system switches from the first pipeline 10 to the second pipeline 12. The second pipeline 12 is inserted into the second exhaust port 11 and connected to an external negative pressure source. The inserted second pipeline 12 pushes open the sealing plate 13, allowing for stable isolation and protection directly through the external negative pressure source. At this time, the sensor detects the second pipeline 12, and after a certain flow field stabilization delay, the power supply is cut off, causing the exhaust fan 9 to stop rotating, thus completely converting the system. For the protection and control of the second pipe 12; in order to achieve zero gap protection and ensure no leakage protection, the first pipe 10 and the second pipe 12 must be interlocked. After the second pipe 12 is pulled out, the sensor detects that the second pipe 12 has been pulled out and controls the power supply to make the exhaust fan 9 rotate. If necessary, the exhaust fan 9 can be started and stopped directly by the switch. When the second pipe 12 is pulled out, the sealing plate 13 automatically seals the second exhaust port 11. In this embodiment, the sealing plate 13 is made of elastic silicone rubber to achieve automatic sealing, and the sensor can be a sensor or a limit switch.

[0033] like Figure 4As shown, both the base cover sliding seat 3 and the guide rail support seat 4 are U-shaped. The base cover sliding seat 3 has a guide rail 14 on its side, and the guide rail support seat 4 has a guide rail guide groove block 15 on its side. The guide rail guide groove block 15 and the guide rail 14 are slidably connected in the horizontal direction, so that the base cover sliding seat 3 and the guide rail support seat 4 are slidably connected. The base cover sliding seat 3 is also provided with a locking component for fixing the base cover sliding seat 3 and the guide rail support seat 4. One end of the base cover sliding seat 3 is provided with a push-pull handle 16 and an unlocking button 17. The locking component is connected to an electric push rod, and the unlocking button 17 is electrically connected to the electric push rod. The first pipeline 10 is a telescopic pipeline, i.e., a corrugated flexible hose. A second isolation membrane 18 is connected between the base cover sliding seat 3 and the guide rail support seat 4. Specifically, taking the position of the patient lying flat on the stretcher or hospital bed as a reference, the left and right sides of the base cover sliding seat 3 are provided with guide rails 14. The left and right sides of the rail support seat 4 are provided with guide rail groove blocks 15. The guide rail support seat 4 is located inside the base cover sliding seat 3, and the sliding direction of the base cover sliding seat 3 relative to the guide rail support seat 4 is along the length of the stretcher or hospital bed. The push-pull handle 16 and the unlocking button 17 are located at one end of the base cover sliding seat 3, i.e., the width end, which is sandwiched between the left and right sides. The two ends of the second isolation soft membrane 18 are respectively connected to the width end of the base cover sliding seat 3 and the width end of the guide rail support seat 4. The locking assembly includes a limiting member and a lever. After the limiting member is engaged with the limiting hole on the guide rail support seat 4, the base cover sliding seat 3 and the guide rail support seat 4 are fixed. After the limiting member is moved out of the limiting hole by moving the lever, the base cover sliding seat 3 can slide. The lever can be moved by pressing the unlocking button 17 to control the electric push rod. The specific structure of the locking assembly is existing technology and will not be described in detail here. The fixed base cover 1 is provided with a secondary cover rotating shaft 19, and the rotating secondary cover 2 is rotatably mounted on the secondary cover rotating shaft 19. The rotating secondary cover 2 is externally connected to a motor 20 for driving the rotating secondary cover 2 to rotate.

[0034] Since this invention needs to be used in conjunction with a stretcher or hospital bed, the guide rail 14 and guide rail guide block 15 allow the base cover sliding seat 3 to slide relative to the guide rail support seat 4, thereby driving the fixed base cover 1 and the rotating secondary cover 2 to move, facilitating the patient's loading and unloading from the stretcher or hospital bed. After the patient is already lying on the stretcher or hospital bed, the base cover sliding seat 3 is slid to move the fixed base cover 1 and the rotating secondary cover 2 to the position of the patient's head. After the base cover sliding seat 3 slides relative to the guide rail support seat 4, the distance between the fixed base cover 1 and the guide rail support seat 4 becomes longer. At this time, the first pipe 10 is stretched. The use of a telescopic first pipe 10 can prevent the first pipe 10 from occupying space in the protective space due to being too long, causing discomfort to the patient. After the base cover sliding seat 3 slides relative to the guide rail support seat 4, the second isolation soft membrane 18 can isolate the large gap between the base cover sliding seat 3 and the guide rail support seat 4, further enhancing the protective isolation effect.

[0035] Compared to closed negative pressure isolation chambers, which are battery-powered and unsuitable for long-distance transport, this invention utilizes a semi-closed isolation device. The negative pressure isolation chamber is battery-powered, making it unsuitable for long-distance transport. Furthermore, the exhaust air is only filtered, not disinfected, posing a risk of infection. During transport, the patient is in a completely enclosed space, hindering efficient and complex treatment and causing discomfort. This device is also unsuitable for individuals with claustrophobia. In contrast, this invention employs a semi-closed isolation device powered by the ambulance's electrical system, suitable for long-distance, long-duration transport. The exhaust air is not only efficiently filtered but also disinfected. The semi-closed space allows for efficient and complex treatment, making it suitable for individuals with claustrophobia. Moreover, compared to existing semi-closed isolation devices, this invention enhances protection during the final emergency care stages—from the patient's location to the ambulance and from the ambulance to the hospital isolation ward—further improving the isolation effect. It allows for efficient isolation of the patient in a small, localized space within the ward.

[0036] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above-described embodiment. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

Claims

1. A protective isolation headgear, characterized in that, The system includes a fixed base cover (1), a rotating sub-cover (2), a base cover sliding seat (3), and a guide rail support seat (4). The guide rail support seat (4) is connected to the base cover sliding seat (3). The fixed base cover (1) is mounted on the base cover sliding seat (3). The rotating sub-cover (2) is rotatably mounted on the fixed base cover (1). A first insulating soft membrane (5) is provided on the rotating sub-cover (2) at one end away from the fixed base cover (1). The fixed base cover (1), the rotating sub-cover (2), and the first insulating membrane are connected. The soft membrane (5) forms a protective space. The fixed base cover (1) is provided with a filter box (6). The filter box (6) is located in the protective space. The filter box (6) is provided with a disinfection filter screen (7). The guide rail support (4) is provided with a first exhaust port (8). The first exhaust port (8) is provided with an exhaust fan (9) for exhausting the air in the protective space to the outside. The exhaust fan (9) is connected to a power source. The first exhaust port (8) and the filter box (6) are connected through a first pipe (10). The fixed base cover (1) is provided with a second exhaust port (11), and a second pipe (12) is detachably connected to the second exhaust port (11). The second pipe (12) is connected to an external negative pressure source. It also includes a switch, and a sensor for sensing the second pipeline (12) is provided at the second exhaust port (11). The switch and the sensor are electrically connected to the power supply. A sealing piece (13) is connected to the fixed base cover (1). When the second pipe (12) is not connected to the second exhaust port (11), the sealing piece (13) seals the second exhaust port (11). When the second pipe (12) is connected to the second exhaust port (11), the second pipe (12) pushes the sealing piece (13) away from the second exhaust port (11) and makes the second pipe (12) connect to the protective space. The first pipe (10) and the second pipe (12) are interlocked. The sensor senses whether the second pipe (12) is connected or not. When the second pipe (12) is not connected, the sensor controls the power supply to make the exhaust fan (9) rotate and the sealing plate (13) automatically seals the second exhaust port (11). When the second pipe (12) is connected, the power supply is turned off.

2. The protective isolation headgear according to claim 1, characterized in that, The base cover sliding seat (3) is provided with a guide rail (14) on its side, and the guide rail support seat (4) is provided with a guide rail guide groove block (15) on its side. The guide rail guide groove block (15) and the guide rail (14) are slidably connected in the horizontal direction, so that the base cover sliding seat (3) and the guide rail support seat (4) are slidably connected. The base cover sliding seat (3) is also provided with a locking component for fixing the base cover sliding seat (3) and the guide rail support seat (4).

3. A protective isolation headgear according to claim 2, characterized in that, The base cover sliding seat (3) is provided with a push-pull handle (16) and an unlock button (17) at one end. The locking assembly is connected to an electric push rod, and the unlock button (17) is electrically connected to the electric push rod.

4. A protective isolation headgear according to claim 2, characterized in that, The first pipeline (10) is a retractable pipeline.

5. A protective isolation headgear according to claim 2, characterized in that, A second insulating membrane (18) is connected between the base cover sliding seat (3) and the guide rail support seat (4).

6. A protective isolation headgear according to claim 1, characterized in that, The fixed base cover (1) is provided with a secondary cover rotating shaft (19), the rotating secondary cover (2) is rotatably mounted on the secondary cover rotating shaft (19), and the rotating secondary cover (2) is externally connected to a motor (20) for driving the rotating secondary cover (2) to rotate.

7. A protective isolation headgear according to claim 1, characterized in that, Both the fixed base cover (1) and the rotating sub-cover (2) are made of antibacterial and flame-retardant materials.

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