Negative pressure head cover and method of use

Abstract

The application discloses a negative pressure head cover capable of preventing droplet transmission and a use method thereof, and belongs to the technical field of medical devices. The negative pressure head cover comprises a sealed head cover, a sealed face cover, and a negative pressure pipe. The sealed head cover is transparent. The sealed face cover is detachably arranged on the outer side of the sealed head cover and is transparent. The negative pressure pipe is arranged on the outer side of a sterilization assembly. The application effectively solves the problem that the exhaled gas cannot be sterilized before being discharged, thereby realizing that the negative pressure pipe can extract the gas in the sealed face cover, input the gas into the inside of the sterilization assembly for sterilization, and then discharge the gas through the exhaust pipe, so that the exhaled gas of the patient can be sterilized before being discharged, the gas in the sealed head cover is prevented from being emitted into the air when the sealed head cover is removed, and the effect of preventing droplet transmission is improved.

Description

Technical Field

[0001] This application relates to the field of medical device technology, and more specifically, to a negative pressure headgear that can prevent droplet transmission and its method of use. Background Technology

[0002] In the process of treating and caring for patients with respiratory infectious diseases, in order to prevent droplet transmission from infecting medical staff and other patients, it is necessary to isolate the patient's head. Currently, the main protective equipment is a head cover, which can effectively prevent the spread of viruses, bacteria and other microorganisms, and ensure the safety and health of medical staff and the public.

[0003] In related technologies, traditional protective headgear is mainly used to protect medical staff, but it cannot isolate droplets generated by patients during treatment, which will still be released into the air and cause cross-infection to the surrounding environment and patients. In order to isolate the patient's head during treatment, for example, the existing technology publication number CN212853667U provides a protective headgear. This device has a double isolation filtration. The first layer is through an isolation mask, filter membrane and sealing membrane to prevent exhaled gas and droplets from being discharged into the air through the bronchoscope channel. The second layer is through an isolation headgear, filter sheet, etc. to isolate the entire head and shoulder area.

[0004] Although the existing technical solutions mentioned above can prevent exhaled air and droplets from being released into the air through isolation masks and isolation headgear, the exhaled air and droplets inside the isolation headgear cannot be disinfected and discharged. When the isolation headgear needs to be removed, the air and droplets inside will still be released into the air. Therefore, there is a defect that the exhaled air cannot be disinfected and discharged.

[0005] In view of this, we propose a negative pressure hood that can prevent droplet transmission and its usage method. Summary of the Invention

[0006] 1. Technical problems to be solved

[0007] The purpose of this application is to provide a negative pressure hood that can prevent droplet transmission and its usage method, which solves the technical problem of not being able to disinfect exhaled air before expelling it, and achieves the technical effect of using negative pressure to extract exhaled air, disinfect it, and then expel it.

[0008] 2. Technical Solution

[0009] This application provides a negative pressure hood that can prevent droplet transmission, comprising:

[0010] A sealed head cover, wherein the sealed head cover is transparent;

[0011] A sealing mask, which is detachably mounted on the outside of a sealing headgear, and is transparent;

[0012] A negative pressure tube is provided on the outside of the disinfection assembly. The negative pressure tube draws the gas inside the sealed mask into the disinfection assembly for disinfection. An exhaust pipe for exhausting gas is fixedly provided on the outside of the disinfection assembly.

[0013] A connecting tube is inserted into the inside of a sealed face mask. One end of the connecting tube inside the face mask is fixedly equipped with a mouth opener, and the other end of the connecting tube is fixedly equipped with a disinfection component. The disinfection component disinfects the insertion tube assembly inside the connecting tube.

[0014] By adopting the above technical solution, when the sealed headgear is sealed on the patient's head, the sealed face mask can only be connected to the outside through the connecting tube. When performing intubation or suctioning, the intubation tube is inserted into the connecting tube through the connector. At this time, the mouthpiece at the other end of the connecting tube is located in the patient's mouth to support the patient's oral cavity, thereby facilitating intubation and suctioning. When the intubation tube is removed, it will be disinfected by the disinfection component to prevent bacteria carried by the intubation tube from spreading into the air. When disinfecting the exhaled air inside the sealed face mask, a negative pressure device is connected through the exhaust pipe, which draws the air inside the sealed face mask out through the negative pressure pipe and introduces it into the disinfection component for disinfection, and then discharges it through the exhaust pipe. This facilitates the disinfection of the patient's exhaled air before discharge, preventing the air inside from dissipating into the air when the sealed headgear is removed, and improving the effect of preventing droplet transmission.

[0015] As an optional solution to the technical solution of this application, the disinfection component includes an inner lamp tube, with ultraviolet lamp tubes evenly distributed on the outer side of the inner lamp tube. A threaded sleeve is fixedly provided on the outer side of one end of the inner lamp tube, and a sleeve is threadedly provided on the outer side of the threaded sleeve. The sleeve is located outside the ultraviolet lamp tubes, and an outer lamp tube is fixedly provided on the inner side of the sleeve, located outside the ultraviolet lamp tubes. A disinfection chamber is formed between the sleeve and the outer lamp tube. An ozone tube is fixedly provided on the top of the sleeve, and the negative pressure tube and the exhaust tube are fixedly provided on the outer side of the sleeve.

[0016] By adopting the above technical solution, when the negative pressure tube introduces the gas inside the sealed mask into the disinfection chamber, the ultraviolet light emitted by the ultraviolet lamp tube shines into the disinfection chamber through the external lamp tube, using ultraviolet light to disinfect the gas. At the same time, under negative pressure, the exhaust pipe draws ozone into the disinfection chamber through the ozone tube, allowing the gas to be disinfected by ozone and discharged along with the exhaust pipe, thereby ensuring the disinfection effect on the exhaled gas.

[0017] As an optional solution to the technical solution of this application, a connector is fixedly provided at one end of the inner lamp tube, and a connecting pipe is provided at the other end of the inner lamp tube through a connecting ring thread. A sealing plug is threaded at one end of the connector, and an oxygen supply pipe is fixedly provided on the outside of the connector.

[0018] By adopting the above technical solution, after the sealed headgear is sealed and placed on the patient's head, the oxygen supply equipment can be connected through the oxygen supply tube to provide the patient with sufficient oxygen, ensuring the pressure balance inside the sealed headgear. Furthermore, the anesthesia breathing circuit can be connected through the oxygen supply tube to facilitate anesthesia of the patient during treatment. In addition, the ultraviolet light emitted by the ultraviolet lamp tube irradiates its interior through the inner lamp tube. When the cannula is inserted into the connector and the connecting tube, the cannula can be disinfected by the ultraviolet light inside the inner lamp tube.

[0019] As an optional solution to the technical solution of this application, a threaded pipe A is fixedly provided at one end of the connecting pipe, the threaded pipe A is threaded inside the connecting ring, a telescopic pipe is fixedly provided on the side of the threaded pipe A near the sealing mask, and a threaded pipe B is fixedly provided at the other end of the telescopic pipe, the threaded pipe B is threaded inside the sealing mask.

[0020] By adopting the above technical solution, when the threaded tube B is threadedly connected to the sealing mask, the connecting tube is restricted to the inside of the sealing mask by the telescopic tube. When the connecting tube is finely adjusted, the connecting tube can move within a certain range under the action of the threaded tube B, so as to adapt to different patients.

[0021] As an optional solution to the technical solution of this application, the sealing mask includes a mounting plate B, which is fixedly mounted on the outside of the sealing head cover by screws. A transparent frame is fixedly mounted on the side of the mounting plate B away from the sealing head cover. An air outlet pipe is fixedly mounted on the outside of the transparent frame. The air outlet pipe is connected to a negative pressure pipe through a connecting hose. A threaded hole for connecting a threaded pipe B is opened on the inside of the transparent frame. Plastic films are symmetrically fixed on both sides of the transparent frame on the outside of the mounting plate B.

[0022] By adopting the above technical solution, after the sealing mask is fixed on the outside of the sealing headgear, the transparent frame has a certain height, so that medical staff can operate the connecting tube through the plastic film or perform other auxiliary operations, making it more convenient to use and ensuring the sealing of the mask at all times. When the negative pressure tube is connected, it is connected to the exhaust tube through the connecting hose, so that the inside of the sealing mask is connected to the negative pressure tube through the exhaust tube, so as to extract the exhaled gas inside the sealing mask.

[0023] As an optional solution to the technical solution of this application, the sealing head cover includes a fixed cover, a semi-circular connecting ring A fixedly disposed at the bottom of the fixed cover, a sliding cover rotatably disposed on the outside of the fixed cover via a fixed shaft, the sliding cover being slidably disposed on the outside of the sealing head cover via a sealing strip on one side, a semi-circular connecting ring B fixedly disposed on the side of the sliding cover away from the sealing strip, connecting plates symmetrically fixedly disposed on the sides of the semi-circular connecting ring A and the semi-circular connecting ring B that are close to each other, the connecting plates being fixedly disposed together by connecting bolts, and the connecting bolts fixing the mounting plate B to the outside of the sliding cover, the outside of the sliding cover corresponding to the mounting plate B being fixedly disposed by the mounting plate A, the mounting plate A being fixedly disposed to the sliding cover via an operating port, the mounting plate B and the mounting plate A being fixedly disposed together by connecting bolts and screws, and a pressure gauge for detecting the internal pressure of the sealing head cover being fixedly disposed on the outside of the mounting plate A.

[0024] By adopting the above technical solution, when wearing the sealed head cover, first place the sealing bag around the patient's neck, then put the fixed cover on the head, and then rotate the sliding cover downwards to slide around the outside of the fixed cover until the semicircular connecting ring B and the semicircular connecting ring A are close to each other and stop rotating. At this time, the other side of the sliding cover ensures the seal between it and the fixed cover through the sealing strip. Then, the mounting plate B is assembled on the outside of the mounting plate A, and the connecting bolt is passed between the mounting plate B and the mounting plate A. Rotating the connecting bolt fixes the semicircular connecting ring A and the semicircular connecting ring B to each other, thereby ensuring the seal between the fixed cover and the sliding cover. At the same time, the mounting plate B is fixed on the outside of the mounting plate A by the connecting bolt, so as to facilitate the assembly of the sealing mask when wearing the sealed head cover, thereby making the sealing mask easy to disassemble from the sealed head cover and convenient to carry and assemble.

[0025] As an optional solution to the technical solution of this application, the bottom of the fixed cover and the sliding cover are sealed to the neck by a sealing bag. The sealing bag is fixed to the outside of the semi-circular connecting ring A and the semi-circular connecting ring B by a thin rope, and the bottom of the sealing bag is sealed to the patient's neck by a thin rope.

[0026] By adopting the above technical solution, after the semicircular connecting ring A and the semicircular connecting ring B are fixed to each other, the sealing bag is tied tightly to the outside of the semicircular connecting ring A and the semicircular connecting ring B with a thin rope, and then the bottom of the sealing bag is tied tightly to the patient's neck with a thin rope. A pad can be placed between the patient's neck and the sealing bag to prevent damage, so as to facilitate sealing between the sealing head cover and the neck.

[0027] As an optional solution to the technical solution of this application, a neck airbag is fixedly installed inside the fixed cover, and a head airbag is fixedly installed inside the sliding cover. Both the head airbag and the neck airbag are inflated through an air inlet pipe, which is fixedly installed inside the fixed shaft.

[0028] By adopting the above technical solution, after the fixed cover and sliding cover are worn on the patient's head, air is introduced into the head airbag and neck airbag through the semi-circular connecting ring A, so that the head airbag and neck airbag fit snugly against the patient's head and neck respectively, ensuring the stability of the sealed head cover. Furthermore, the openable and closable design allows the sealed head cover to be used by different groups of people.

[0029] This application provides a method for using the aforementioned negative pressure hood that can prevent droplet transmission, including the following steps:

[0030] S1. When the sealing head cover is sealed and placed on the patient's head, the sealing face mask can only be connected to the outside through the connecting tube. When performing intubation or suctioning, the intubation tube is placed inside the connecting tube through the connector. At this time, the mouth opener at the other end of the connecting tube is located in the patient's mouth to support the patient's oral cavity, thereby facilitating intubation and suctioning.

[0031] S2. When the cannula is removed, it will be disinfected by a disinfection component to prevent bacteria carried by the cannula from spreading into the air.

[0032] S3. When disinfecting the exhaled gas inside the sealed mask, connect the negative pressure device through the exhaust pipe so that the negative pressure pipe draws out the gas inside the sealed mask and inputs it into the disinfection component for disinfection, and then discharges it through the exhaust pipe.

[0033] S4. At this time, oxygen supply equipment can be connected through the oxygen supply tube to provide sufficient oxygen to the patient and ensure the pressure balance inside the sealed headgear.

[0034] 3. Beneficial effects

[0035] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages:

[0036] (1) This application uses a disinfection component to disinfect the inhaled gas before it is discharged, which effectively solves the problem that the exhaled gas cannot be disinfected before it is discharged. This enables the negative pressure tube to draw out the gas inside the sealed mask and input it into the disinfection component for disinfection, and then discharge it through the exhaust pipe. This facilitates the disinfection of the patient's exhaled gas before it is discharged, preventing the gas inside the sealed mask from dissipating into the air when the mask is removed, and improving the effect of preventing droplet transmission.

[0037] (2) This application provides a connecting tube at one end of the disinfection component, through which intubation and suctioning operations can be performed, and oxygen can also be supplied. When the intubation tube is removed from the inside of the connecting tube, the intubation tube is disinfected by the disinfection component to prevent bacteria carried by the intubation tube from spreading into the air.

[0038] (3) This application provides a sealed face shield on the outside of the sealed head shield. The sealed face shield makes it easier for medical staff to operate on the outside of the sealed head shield, preventing gas leakage during operation. Furthermore, the sealed head shield and the sealed face shield are easy to disassemble and assemble, making them more convenient to use.

[0039] (4) This application provides a fixed cover and a sliding cover in the sealed head cover. The fixed cover and the sliding cover are worn in an open and closed manner, which is convenient to adapt to different patients. Furthermore, a neck airbag and a head airbag are provided on the inner side of the fixed cover and the sliding cover, respectively, to ensure the stability of wearing the sealed head cover. Attached Figure Description

[0040] Figure 1 This is a schematic diagram of the overall structure of a negative pressure hood that can prevent droplet transmission, as disclosed in a preferred embodiment of this application.

[0041] Figure 2 This is a schematic diagram of the internal structure of a sealed headgear in a negative pressure headgear that can prevent droplet transmission, as disclosed in a preferred embodiment of this application.

[0042] Figure 3 This is a schematic diagram of the outer structure of the sealed headgear in a negative pressure headgear that can prevent droplet transmission, as disclosed in a preferred embodiment of this application.

[0043] Figure 4 This is a schematic diagram of the assembly structure of a sealed headgear and a sealed face shield in a negative pressure headgear that can prevent droplet transmission, as disclosed in a preferred embodiment of this application.

[0044] Figure 5 This is a schematic diagram of the assembly structure of the sealing mask and the connecting tube in a negative pressure hood that can prevent droplet transmission, as disclosed in a preferred embodiment of this application.

[0045] Figure 6 This is a schematic diagram of the explosion structure of the disinfection component in a negative pressure hood that can prevent droplet transmission, as disclosed in a preferred embodiment of this application.

[0046] Figure 7 This is a schematic diagram of the structure of the sleeve in a negative pressure hood that can prevent droplet transmission, as disclosed in a preferred embodiment of this application.

[0047] Figure 8 for Figure 7 Schematic diagram of the cross-sectional structure at point AA;

[0048] Explanation of the numbers in the diagram: 1. Sealed head cover; 11. Fixed cover; 12. Semicircular connecting ring A; 13. Fixed shaft; 14. Sliding cover; 15. Semicircular connecting ring B; 16. Connecting plate; 17. Connecting bolt; 18. Mounting plate A; 19. Operating port; 110. Head airbag; 111. Neck airbag; 112. Air inlet pipe; 113. Sealing bag; 114. Thin rope; 115. Pressure gauge; 116. Sealing strip; 2. Sealed face mask; 21. Mounting plate B; 22. Transparent frame; 23. 1. Air outlet pipe; 24. Plastic film; 25. Screw; 26. Threaded hole; 3. Negative pressure pipe; 31. Exhaust pipe; 32. Connecting hose; 4. Disinfection assembly; 41. Inner lamp tube; 42. Ultraviolet lamp tube; 43. Threaded sleeve; 44. Sleeve; 45. Ozone tube; 46. Outer lamp tube; 47. Disinfection chamber; 48. Connecting ring; 5. Connecting pipe; 51. Connector; 52. Mouth opener; 53. Oxygen supply pipe; 54. Sealing plug; 55. Threaded pipe A; 56. Telescopic pipe; 57. Threaded pipe B. Detailed Implementation

[0049] The present application will be further described in detail below with reference to the accompanying drawings.

[0050] Reference Figure 1 and Figure 5 This application discloses a negative pressure headgear that can prevent droplet transmission, including a sealed headgear 1, a sealed face shield 2 detachably disposed on the outside of the sealed headgear 1, a connecting tube 5 for inserting a cannula inserted into the inside of the sealed face shield 2, a mouth opening device 52 threaded onto one end of the connecting tube 5 inside the sealed face shield 2, a disinfection component 4 fixedly disposed on the other end of the connecting tube 5, a connector 51 fixedly disposed on the other end of the disinfection component 4, a negative pressure tube 3 fixedly disposed on the outside of the disinfection component 4, the negative pressure tube 3 draws the gas inside the sealed face shield 2 into the disinfection component 4 for disinfection, an exhaust pipe 31 for venting the gas is fixedly disposed on the outside of the disinfection component 4, and the disinfection component 4 disinfects the cannula assembly inside the connecting tube 5, both the sealed headgear 1 and the sealed face shield 2 are transparent.

[0051] When the sealing headgear 1 is sealed and placed on the patient's head, the sealing face mask 2 can only be connected to the outside through the connecting tube 5. When performing intubation or suctioning, the intubation tube is inserted into the connecting tube 5 through the connector 51. At this time, the mouth opening 52 at the other end of the connecting tube 5 is located in the patient's mouth to support the patient's oral cavity, thereby facilitating intubation and suctioning. When the intubation tube is removed, it will be disinfected by the disinfection component 4 to prevent bacteria carried by the intubation tube from spreading into the air. When disinfecting the exhaled air inside the sealing face mask 2, the negative pressure device is connected through the exhaust pipe 31, so that the negative pressure pipe 3 draws out the air inside the sealing face mask 2 and inputs it into the disinfection component 4 for disinfection, and then discharges it through the exhaust pipe 31. This facilitates the disinfection of the patient's exhaled air before discharge, preventing the air inside the sealing headgear 1 from dissipating into the air when it is removed, and improving the effect of preventing droplet transmission.

[0052] Reference Figure 6 , Figure 7 and Figure 8 The disinfection component 4 includes an inner lamp tube 41, with ultraviolet lamp tubes 42 evenly distributed on the outer side of the inner lamp tube 41. A threaded sleeve 43 is fixedly installed on the outer side of one end of the inner lamp tube 41. A sleeve 44 is threadedly installed on the outer side of the threaded sleeve 43. The sleeve 44 is located outside the ultraviolet lamp tubes 42. An outer lamp tube 46 is fixedly installed on the inner side of the sleeve 44, which is located outside the ultraviolet lamp tubes 42. A disinfection chamber 47 is formed between the sleeve 44 and the outer lamp tube 46. An ozone tube 45 is fixedly installed on the top of the sleeve 44. A negative pressure tube 3 and an exhaust tube 31 are fixedly installed on the outer side of the sleeve 44.

[0053] When the negative pressure tube 3 introduces the gas inside the sealed mask 2 into the disinfection chamber 47, the ultraviolet light emitted by the ultraviolet lamp tube 42 shines into the disinfection chamber 47 through the outer lamp tube 46, using ultraviolet light to disinfect the gas. At the same time, under negative pressure, the exhaust pipe 31 draws ozone into the disinfection chamber 47 through the ozone tube 45, allowing the gas to be disinfected by ozone and discharged along with the exhaust pipe 31, thus ensuring the disinfection effect on the exhaled gas.

[0054] Reference Figure 5 and Figure 6 One end of the inner lamp tube 41 is fixedly provided with a connector 51, and the other end of the inner lamp tube 41 is provided with a connecting pipe 5 through a connecting ring 48. One end of the connector 51 is provided with a sealing plug 54, and an oxygen supply pipe 53 is fixedly provided on the outside of the connector 51.

[0055] After the sealed headgear 1 is sealed and placed on the patient's head, the oxygen supply equipment can be connected through the oxygen supply tube 53 to provide the patient with sufficient oxygen, ensuring the pressure balance inside the sealed headgear 1. The oxygen supply tube 53 can also be connected to an anesthesia breathing circuit to facilitate anesthesia of the patient during treatment. The ultraviolet light emitted by the ultraviolet lamp tube 42 is irradiated inside the inner lamp tube 41. When the cannula is inserted into the connector 51 and the connecting tube 5, the cannula can be disinfected by the ultraviolet light inside the inner lamp tube 41.

[0056] Reference Figure 5 and Figure 6 One end of the connecting pipe 5 is fixedly provided with a threaded pipe A55, which is threaded inside the connecting ring 48. A telescopic pipe 56 is fixedly provided on the side of the threaded pipe A55 near the sealing mask 2. A threaded pipe B57 is fixedly provided on the other end of the telescopic pipe 56, which is threaded inside the sealing mask 2.

[0057] When the threaded tube B57 is threadedly connected to the sealing mask 2, the connecting tube 5 is restricted to the inside of the sealing mask 2 by the telescopic tube 56. When the connecting tube 5 is finely adjusted, it can move within a certain range under the action of the threaded tube B57, so as to adapt to different patients.

[0058] Reference Figure 4 and Figure 6 The sealing mask 2 includes a mounting plate B21, which is fixed to the outside of the sealing head cover 1 by screws 25. A transparent frame 22 is fixedly installed on the side of the mounting plate B21 away from the sealing head cover 1. An air outlet pipe 23 is fixedly installed on the outside of the transparent frame 22. The air outlet pipe 23 is connected to the negative pressure pipe 3 through a connecting hose 32. A threaded hole 26 for connecting a threaded pipe B57 is opened on the inside of the transparent frame 22. Plastic films 24 are symmetrically fixed on both sides of the transparent frame 22 on the outside of the mounting plate B21.

[0059] After the sealing mask 2 is fixed on the outside of the sealing head cover 1, the transparent frame 22 has a certain height, so that medical staff can operate the connecting tube 5 through the plastic film 24 or perform other auxiliary operations, making it more convenient to use and ensuring the sealing of the sealing mask 2 at all times. When the negative pressure tube 3 is connected to the air outlet tube 23 through the connecting hose 32, the inside of the sealing mask 2 is connected to the negative pressure tube 3 through the air outlet tube 23, so as to extract the exhaled gas inside the sealing mask 2.

[0060] Reference Figure 1 , Figure 3 and Figure 4The sealing head cover 1 includes a fixed cover 11. A semi-circular connecting ring A12 is fixedly installed at the bottom of the fixed cover 11. A sliding cover 14 is rotatably installed on the outside of the fixed cover 11 via a fixed shaft 13. The sliding cover 14 is slidably installed on the outside of the sealing head cover 1 via a sealing strip 116 on one side. A semi-circular connecting ring B15 is fixedly installed on the side of the sliding cover 14 away from the sealing strip 116. A connecting plate 16 is symmetrically fixed on the side of the semi-circular connecting ring A12 and the semi-circular connecting ring B15 that are close to each other. The connecting plates 16 are fixed together by connecting bolts 17. The connecting bolts 17 fix the mounting plate B21 to the outside of the sliding cover 14. A mounting plate A18 is fixedly installed on the outside of the sliding cover 14 corresponding to the mounting plate B21. The mounting plate A18 is fixed to the sliding cover 14 through an operating port 19. The mounting plate B21 and the mounting plate A18 are fixed together by connecting bolts 17 and screws 25. A pressure gauge 115 for detecting the internal pressure of the sealing head cover 2 is fixedly installed on the outside of the mounting plate A18.

[0061] When wearing the sealing head cover 1, first place the sealing bag 113 around the patient's neck, then put the fixing cover 11 on the head. Then, rotate the sliding cover 14 downwards and slide it around the outside of the fixing cover 11 until the semicircular connecting ring B15 and the semicircular connecting ring A12 are close together and stop rotating. At this time, the other side of the sliding cover 14 is sealed with the fixing cover 11 by the sealing strip 116. Then, the mounting plate B21 is assembled on the outside of the mounting plate A18. The connecting bolt 17 is passed between the mounting plate B21 and the mounting plate A18. Rotate the connecting bolt 17 to fix the semicircular connecting ring A12 and the semicircular connecting ring B15 to each other, thereby ensuring the sealing between the fixing cover 11 and the sliding cover 14. At the same time, the mounting plate B21 is fixed to the outside of the mounting plate A18 by the connecting bolt 17, so as to facilitate the assembly of the sealing face mask 2 when wearing the sealing head cover 1, thereby making the sealing face mask 2 easy to disassemble from the sealing head cover 1 and convenient to carry and assemble.

[0062] Reference Figure 1 , Figure 2 and Figure 3 The bottom of the fixed cover 11 and the sliding cover 14 are sealed to the neck by a sealing bag 113. The sealing bag 113 is fixed to the outside of the semi-circular connecting ring A12 and the semi-circular connecting ring B15 by a thin rope 114. The bottom of the sealing bag 113 is sealed to the patient's neck by a thin rope 114.

[0063] After the semicircular connecting ring A12 and the semicircular connecting ring B15 are fixed together, the sealing bag 113 is tied tightly to the outside of the semicircular connecting ring A12 and the semicircular connecting ring B15 with the thin rope 114. Then, the bottom of the sealing bag 113 is tied tightly to the patient's neck with the thin rope 114. A pad can be placed between the patient's neck and the sealing bag 113 to prevent damage, so as to facilitate sealing between the sealing head cover 1 and the neck.

[0064] Reference Figure 2 and Figure 4 A neck airbag 111 is fixedly installed inside the fixed cover 11, and a head airbag 110 is fixedly installed inside the sliding cover 14. Both the head airbag 110 and the neck airbag 111 are inflated through the air inlet pipe 112, which is fixedly installed inside the fixed shaft 13.

[0065] After the fixed cover 11 and the sliding cover 14 are worn on the patient's head, air is introduced into the head airbag 110 and the neck airbag 111 through the semi-circular connecting ring A12, so that the head airbag 110 and the neck airbag 111 fit the patient's head and neck respectively, ensuring the stability of the sealed head cover 1. It can be worn in an open and close manner, so that the sealed head cover 1 can be used by different people.

[0066] Reference Figure 1-8 This application also discloses a method for using the negative pressure hood that can prevent droplet transmission, including the following steps:

[0067] S1. When the sealing head cover 1 is sealed and placed on the patient's head, the sealing face mask 2 can only be connected to the outside through the connecting tube 5. When performing intubation and suctioning, the intubation tube is placed into the inside of the connecting tube 5 through the connector 51. At this time, the mouth opener 52 at the other end of the connecting tube 5 is located in the patient's mouth to support the patient's oral cavity, thereby facilitating intubation and suctioning.

[0068] S2. When the cannula is removed, it will be disinfected by the disinfection component 4 to prevent bacteria carried by the cannula from spreading into the air.

[0069] S3. When disinfecting the exhaled gas inside the sealed mask 2, a negative pressure device is connected through the exhaust pipe 31, so that the negative pressure pipe 3 draws out the gas inside the sealed mask 2 and inputs it into the disinfection component 4 for disinfection, and then discharges it through the exhaust pipe 31.

[0070] S4. At this time, oxygen supply equipment can be connected through oxygen supply pipe 53 to provide sufficient oxygen to the patient and ensure pressure balance inside the sealed headgear 1.

[0071] In summary, when using the negative pressure headgear disclosed in this application, which can prevent droplet transmission, the connecting pipe 5 is first assembled with the sealing mask 2. During assembly, the threaded pipe B57 is threadedly connected to the threaded hole 26 on the inner side of the sealing mask 2. The connecting pipe 5 is restricted to the inner side of the sealing mask 2 by the telescopic pipe 56. When the connecting pipe 5 is finely adjusted, it can move within a certain range under the action of the threaded pipe B57 to adapt to different patients. Then, the negative pressure pipe 3 is connected to the air outlet pipe 23 through the connecting hose 32. Next, the sealing bag 113 is placed around the patient's neck, and then the fixed cover 11 is put on the head. Then, the sliding cover 14 is rotated downwards and slid around the outside of the fixed cover 11 until the semi-circular connecting ring B15 and the semi-circular connecting ring A12 are close to each other and the rotation stops. At this time, the other side of the sliding cover 14 is sealed with the fixed cover 11 by the sealing strip 116. Then, the mounting plate B21 is assembled on the outside of the mounting plate A18, and the connecting bolt 17 is passed through the mounting plate B21. Between the fixed cover 11 and the mounting plate A18, the connecting bolt 17 is rotated to fix the semi-circular connecting ring A12 and the semi-circular connecting ring B15 to each other, thereby ensuring the sealing between the fixed cover 11 and the sliding cover 14. At the same time, the mounting plate B21 is fixed to the outside of the mounting plate A18 by the connecting bolt 17, so as to facilitate the assembly of the sealing mask 2 when wearing the sealing head cover 1, thereby making it easy to disassemble the sealing mask 2 from the sealing head cover 1, and convenient to carry and assemble; then, the semi-circular connecting ring A12 is used to connect the head airbag 110 and the neck Air is introduced into the airbag 111, so that the head airbag 110 and the neck airbag 111 fit against the patient's head and neck respectively, ensuring the stability of the sealed head cover 1. Then, the sealing bag 113 is tied to the outside of the semi-circular connecting ring A12 and the semi-circular connecting ring B15 by the thin rope 114. The bottom of the sealing bag 113 is then tied to the patient's neck by the thin rope 114. A pad can be placed between the patient's neck and the sealing bag 113 to prevent injury, so as to facilitate the sealing of the sealed head cover 1 and the neck.Then, the mouth opener 52 at the other end of the connecting tube 5 is placed in the patient's mouth to support the oral cavity, facilitating intubation and suctioning. The transparent frame 22 has a certain height, allowing medical staff to operate the connecting tube 5 or perform other auxiliary operations through the plastic film 24, making it more convenient to use and ensuring the airtightness of the face mask 2. It can also be connected to an oxygen supply device via the oxygen supply tube 53 to provide sufficient oxygen to the patient, ensuring pressure balance inside the sealed headgear 1. Furthermore, it can be connected to an anesthesia breathing circuit via the oxygen supply tube 53 for anesthesia during treatment. The ultraviolet light emitted by the ultraviolet lamp tube 42 irradiates its interior through the inner lamp tube 41. When the connector 51 and... When an insertable tube is inserted into the connecting tube 5, it can be disinfected by ultraviolet light from the inner lamp tube 41. When disinfecting the exhaled gas inside the sealed mask 2, a negative pressure device is connected through the exhaust pipe 31, causing the negative pressure pipe 3 to extract the gas from inside the sealed mask 2. The negative pressure pipe 3 then inputs the gas from inside the sealed mask 2 into the disinfection chamber 47. Ultraviolet light emitted by the ultraviolet lamp tube 42 is irradiated into the disinfection chamber 47 through the outer lamp tube 46, using ultraviolet light to disinfect the gas. Simultaneously, under negative pressure, the exhaust pipe 31 draws ozone into the disinfection chamber 47 through the ozone tube 45, allowing the gas to be disinfected by ozone. The ozone is then discharged along with the exhaust pipe 31, thus ensuring the disinfection effect on the exhaled gas.

Claims

1. A negative pressure hood for preventing droplet transmission, characterized in that: Include: Sealed headgear, sealed face mask, negative pressure tubing, disinfection assembly and connecting tubing; The sealing mask is detachably mounted on the outside of the sealing head cover; The negative pressure tube is located on the outside of the disinfection assembly. The negative pressure tube draws the gas inside the sealed mask into the disinfection assembly for disinfection. An exhaust pipe for exhausting gas is fixedly installed on the outside of the disinfection assembly. The connecting tube is inserted into the inside of the sealed face mask. A mouth opener is fixedly installed at one end of the connecting tube inside the sealed face mask, and the other end of the connecting tube is fixedly installed with the disinfection component. The disinfection component disinfects the inserting tube component inside the connecting tube. The disinfection assembly includes an inner lamp tube, with ultraviolet lamp tubes evenly distributed on the outer side of the inner lamp tube. A threaded sleeve is fixedly installed on the outer side of one end of the inner lamp tube, and a sleeve is threadedly installed on the outer side of the threaded sleeve. The sleeve is located outside the ultraviolet lamp tubes, and an outer lamp tube is fixedly installed on the inner side of the sleeve, located outside the ultraviolet lamp tubes. A disinfection chamber is formed between the sleeve and the outer lamp tube. An ozone tube is fixedly installed on the top of the sleeve, and a negative pressure tube and an exhaust tube are fixedly installed on the outer side of the sleeve. A connector is fixedly provided at one end of the inner lamp tube, and a connecting pipe is provided at the other end of the inner lamp tube through a connecting ring thread. A sealing plug is threaded at one end of the connector, and an oxygen supply pipe is fixedly provided on the outside of the connector. One end of the connecting pipe is fixedly provided with a threaded pipe A, which is threaded inside the connecting ring. A telescopic pipe is fixedly provided on the side of the threaded pipe A near the sealing mask. The other end of the telescopic pipe is fixedly provided with a threaded pipe B, which is threaded inside the sealing mask.

2. The negative pressure hood for preventing droplet transmission according to claim 1, characterized in that: The sealing mask includes a mounting plate B, which is fixed to the outside of the sealing head cover by screws. A transparent frame is fixedly installed on the side of the mounting plate B away from the sealing head cover. An air outlet pipe is fixedly installed on the outside of the transparent frame. The air outlet pipe is connected to a negative pressure pipe through a connecting hose. A threaded hole for connecting a threaded pipe B is opened on the inside of the transparent frame. Plastic films are symmetrically fixed on both sides of the transparent frame on the outside of the mounting plate B.

3. The negative pressure hood for preventing droplet transmission according to claim 2, characterized in that: The sealing head cover includes a fixed cover, a semi-circular connecting ring A fixedly disposed at the bottom of the fixed cover, a sliding cover rotatably disposed on the outside of the fixed cover via a fixed shaft, the sliding cover being slidably disposed on the outside of the sealing head cover via a sealing strip on one side, a semi-circular connecting ring B fixedly disposed on the side of the sliding cover away from the sealing strip, connecting plates symmetrically fixedly disposed on the sides of the semi-circular connecting ring A and the semi-circular connecting ring B that are close to each other, the connecting plates being fixedly disposed together by connecting bolts, and the connecting bolts fixing the mounting plate B to the outside of the sliding cover, the outside of the sliding cover corresponding to the mounting plate B being fixedly disposed by the mounting plate A, the mounting plate A being fixedly disposed to the sliding cover via an operating port, the mounting plate B and the mounting plate A being fixedly disposed together by connecting bolts and screws, and a pressure gauge for detecting the internal pressure of the sealing head cover being fixedly disposed on the outside of the mounting plate A.

4. The negative pressure hood for preventing droplet transmission according to claim 3, characterized in that: The bottom of the fixed cover and the sliding cover are sealed to the neck by a sealing bag. The sealing bag is fixed to the outside of the semi-circular connecting ring A and the semi-circular connecting ring B by a thin rope. The bottom of the sealing bag is sealed to the patient's neck by a thin rope.

5. The negative pressure hood for preventing droplet transmission according to claim 4, characterized in that: A neck airbag is fixedly installed inside the fixed cover, and a head airbag is fixedly installed inside the sliding cover. Both the head airbag and the neck airbag are inflated through an air inlet pipe, which is fixedly installed inside the fixed shaft.

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