A laryngoscope with anti-reflux function

Abstract

The present invention relates to the technical field of laryngoscope instruments, and in particular to a laryngoscope with an anti-reflux function, comprising a gripping portion and an inserting portion, wherein an end of the inserting portion away from the gripping portion is fixedly connected to an airbag; a negative pressure tube is connected at the center of the inserting portion, the airbags are located on both sides of the negative pressure tube, and the airbags are connected to a pneumatic part for pumping gas through an trachea; the pneumatic part is located in the gripping portion, and a manual conversion component for converting the trachea to be connected with the negative pressure tube and the pneumatic part is also provided in the gripping portion; a display screen is fixedly connected to the top of the gripping portion, the display screen is electrically connected to a camera, and the camera is located on a side of the insertion portion close to the gripping portion; a sliding plate is slidably matched outside the camera, a slider for controlling the movement of the sliding plate is provided between the sliding plate and the camera, and a branch tube is connected between the slider and the trachea; a magnetic suction rod for controlling the opening and closing of the branch tube is provided between adjacent airbags; the device is used to ensure the imaging quality during the use of the laryngoscope, reduce the generation of reflux, and facilitate tracheal intubation.

Description

Technical Field

[0001] The invention relates to the technical field of laryngoscope instruments, and in particular to a laryngoscope with an anti-reflux function. Background Art

[0002] During tracheal intubation, the main role of the laryngoscope is to assist the doctor in the tracheal intubation operation and ensure the accuracy and safety of the tracheal intubation. Specifically, the laryngoscope can clearly expose the patient's glottis structure, which is a key step in the success of tracheal intubation. Through the display of the laryngoscope, the doctor can intuitively see the position and shape of the glottis, so as to accurately insert the tracheal tube into the trachea. Smooth tracheal intubation can reduce the patient's pain, reduce stress response, and thus reduce the incidence of complications.

[0003] However, reflux often occurs when using laryngoscopes in clinical work. For example, some patients have certain diseases, such as intestinal obstruction, pregnancy, etc., which increase the gastric emptying time, thereby increasing the risk of reflux; at the same time, the use of anesthetic drugs may reduce the tension of the lower esophageal sphincter, weakening its role in preventing the reflux of gastric contents. The occurrence of reflux, on the one hand, can easily cause patients to aspirate into the airway, and even cause severe pneumonia; secondly, the refluxed material will block the laryngoscope's field of view, causing the operating doctor to be unable to distinguish structures such as the epiglottis and glottis, resulting in intubation failure. Long-term laryngoscope operation after intubation failure is bound to further increase the possibility of aspiration. Therefore, there is an urgent need for a laryngoscope that can assist tracheal intubation and reduce reflux. Summary of the invention

[0004] In order to solve the above problems, the present invention provides a laryngoscope with an anti-reflux function, which is used to ensure the imaging quality during the use of the laryngoscope, reduce the generation of reflux, and facilitate tracheal intubation.

[0005] In order to achieve the above-mentioned object, the technical solution of the present invention is as follows: a laryngoscope with anti-reflux function, comprising a gripping portion and an inserting portion, the inserting portion and the gripping portion are rotationally matched, and an end of the inserting portion away from the gripping portion is fixedly connected to an air bag;

[0006] The center of the insertion part is connected with a negative pressure tube, and air bags are located on both sides of the negative pressure tube. The air bags are connected with a pneumatic part for pumping gas through the air tube; the pneumatic part is located in the gripping part, and a manual conversion component for switching the air tube to be connected with one of the negative pressure tube and the pneumatic part is also provided in the gripping part;

[0007] A display screen is fixedly connected to the top of the gripping part, and the display screen is electrically connected to a camera, and the camera is located on a side of the insertion part close to the gripping part; a sliding plate is slidably matched with the outside of the camera, and a slider slidably matched with the insertion part is provided between the sliding plate and the camera; a slide groove is provided in the insertion part, and the slider is located in the slide groove, and a brush is provided on the side of the slider close to the camera, and a branch pipe is connected to one side of the slide groove, and the end of the branch pipe away from the slide groove is connected to the trachea;

[0008] A magnetic rod is provided between adjacent airbags, the magnetic rod is slidably matched with the insertion part, and a closing block for closing the branch pipe is provided on the side of the branch pipe close to the magnetic rod, a spring is provided on the side of the closing block away from the branch pipe, and an electromagnet for actively controlling the movement of the closing block is provided in the closing block;

[0009] When the magnetic rod is in a normal state, the magnetic rod is located outside the insertion part, and the closing block is against the branch pipe; when the magnetic rod is hidden in the insertion part, the closing block is attracted by the magnetic rod and moves to the side away from the branch pipe.

[0010] The technical principles of the above scheme are as follows:

[0011] Air is pumped into the air bag through the starter to fix the insertion part inside the esophagus, block the esophagus and prevent reflux, and provide stable support for camera shooting.

[0012] During the laryngoscope insertion process, the closing block is used to drive the sliding plate to contact or cover the camera to reduce interference with the camera by oral secretions, and then the airbag is used to push the magnetic rod to restore the connection between the branch tube and the trachea.

[0013] Then, the connection mode of the trachea is switched through the manual conversion assembly, and the air inside the airbag or branch pipe is sucked through the negative pressure pipe to reset the sliding plate and cover the camera again. At the same time, the airbag releases the restriction on the magnetic suction rod, so that the compressed spring pushes the closing block to close the branch pipe again, maintaining the stability of the sliding plate during use.

[0014] The above scheme has the following beneficial effects:

[0015] 1. This solution uses an air bag to block the esophagus to maintain stability during laryngoscope observation and reduce the possibility of camera obstruction or contamination due to reflux, making it easier for medical staff to observe and reducing the impact of intubation failure on aspiration.

[0016] 2. In this solution, the sliding plate is moved by airbag expansion or active adsorption of electromagnets, so that the surface of the camera can be cleaned by the bristles on the slider, thereby reducing residual contamination of the camera by oral secretions, etc., to ensure the clarity of the camera surface and improve the image quality displayed on the display screen.

[0017] 3. This solution uses a manual conversion component to switch to adjust whether the sliding plate is moved again to cover, thereby improving the convenience of operation and reducing the contamination of the camera during the removal of the laryngoscope, thereby reducing the workload of disinfecting the camera during the subsequent disinfection process, thereby improving work efficiency.

[0018] Furthermore, the pneumatic part includes a piston that slides with the gripping part, and the end of the piston away from the gripping part is fixedly connected to a push-pull rod. A compression chamber is opened in the gripping part, and the piston is located in the compression chamber. The compression chamber is connected to the negative pressure pipe or the air pipe through a manual conversion assembly.

[0019] Beneficial effects: The piston squeezes the air inside the gripping part, so that the medical staff can adjust the air bag to expand or contract while gripping it, which is convenient for flexible adjustment during the use of the laryngoscope.

[0020] Furthermore, the push-pull rod is engraved with scale lines.

[0021] Beneficial effects: The scale lines can be used to control the moving depth of the piston during use, so as to understand the injection volume of the airbag and to assist in judging whether the insertion portion blocks the esophagus through the airbag to prevent reflux.

[0022] Furthermore, a ring is rotatably fitted on the top of the gripping portion, and the ring is fixedly connected to the display screen.

[0023] Beneficial effect: The ring is rotated on the gripping part to adjust the orientation of the display screen, so that the epiglottis, glottis and other structures can be identified through the display screen during the use of the laryngoscope to assist in tracheal intubation.

[0024] Furthermore, the negative pressure tube is connected to a plurality of adsorption tubes, which are located on the side of the insertion part away from the airbag, and the adsorption tube is connected to a solenoid valve, which is electrically connected to a button for controlling the opening and closing of the solenoid valve, and the button is located on the top of the grip.

[0025] Beneficial effects: The solenoid valve is controlled by a button to absorb the liquid inside the oral cavity through the adsorption tube, so as to keep the oral cavity clean and reduce the risk of airway obstruction caused by blood or other oral secretions produced by patients with nosebleeds.

[0026] Further, the manual conversion assembly includes a transfer chamber located in the gripping part, a central axis is fixedly connected at the center of the transfer chamber, and the central axis is rotatably matched with the gripping part; a handle and a plurality of isolation plates are respectively fixedly connected to the central axis, the isolation plates are located in the transfer chamber, and the isolation plates are slidably matched with the gripping part; and the top of the transfer chamber is respectively connected to the negative pressure tube and the air tube, and the top of the transfer chamber is connected to the compression chamber;

[0027] The handle is located outside the gripping portion, and the handle and the isolation plate are in the same vertical direction. A limiting groove is provided on the gripping portion, and the handle is located in the limiting groove;

[0028] When the handle is located at the rightmost end of the limiting groove, the isolation plate is located between the negative pressure tube and the air pipe, and the air pipe is connected to the compression chamber; when the handle is located at the leftmost end of the limiting groove, the isolation plate is located between the compression chamber and the negative pressure tube and the air pipe, and the air pipe is connected to the negative pressure tube.

[0029] Beneficial effect: The central axis is driven to rotate by the handle to control the internal orientation of the isolation plate in the transfer cavity, so as to control the connectivity of the trachea and thus control the expansion or contraction of the airbag.

[0030] Further, the trachea is located around the negative pressure tube.

[0031] Beneficial effect: A buffer layer is formed through the air tube to reduce the vibration of the insertion part during the suction of the fluid inside the negative pressure tube, thereby reducing the vibration interference during the operation of the camera, so as to improve the imaging quality during the display screen display process.

[0032] Furthermore, a plurality of mounting blocks are fixedly connected to one end of the gripping portion close to the insertion portion, and extension blocks are provided on both sides of the mounting blocks, and the extension blocks are fixedly connected to the insertion portion; a rotating shaft is clamped between the extension blocks and the mounting blocks;

[0033] A snap-fit ​​block rotatably matched with the holding portion is provided between adjacent mounting blocks, a plurality of snap-fit ​​blocks are provided in the snap-fit ​​block, one end of the snap-fit ​​block away from the holding portion is fixedly connected to the insertion portion, and one end of the snap-fit ​​block close to the holding portion is fixedly connected to a protrusion; an annular groove is provided in the snap-fit ​​block, and the protrusion is located in the annular groove.

[0034] Beneficial effect: The protrusion cooperates with the annular groove to facilitate the connection between the holding part and the insertion part. The closing block is gathered toward the center so that the protrusion does not engage with the annular groove, so as to disconnect the holding part and the insertion part, thereby facilitating the installation and disassembly of the holding part and the insertion part.

[0035] Furthermore, a pressing capsule is fixedly connected to one side of the rotating shaft away from the mounting block, and the other end of the pressing capsule is located outside the clamping block; and when the pressing capsule moves to the lowest point, the pressing capsule abuts against the clamping block.

[0036] Beneficial effect: The card block is pressed by the pressing capsule, so that the card block is released to engage with the annular groove, so as to control the connection between the holding part and the insertion part.

[0037] Furthermore, one end of the holding portion away from the push-pull rod is connected to a connecting tube, and the negative pressure tube and the camera are connected to the outside world through the connecting tube.

[0038] Beneficial effect: The negative pressure tube and the electric wire are stored through the connecting tube, so as to protect the negative pressure tube and the electric wire and facilitate the storage of the laryngoscope when not in use.

[0039] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1It is an axonometric diagram of an embodiment of a laryngoscope with anti-reflux function of the present invention;

[0041] Figure 2 It is a top axonometric view of an embodiment of a laryngoscope with anti-reflux function of the present invention;

[0042] Figure 3 It is a front cross-sectional view of an embodiment of a laryngoscope with anti-reflux function of the present invention;

[0043] Figure 4 for Figure 1 Axonometric drawing of the insertion part;

[0044] Figure 5 for Figure 1 A top view of the insertion portion;

[0045] Figure 6 for Figure 3 An enlarged view of a part A;

[0046] Figure 7 for Figure 1 A partial cross-sectional view of the connection between the middle grip portion and the insertion portion;

[0047] Figure 8 for Figure 7 Schematic diagram of the cross section of the middle card block connection.

[0048] The figure marks in the drawings of the specification include: 1. holding part; 11. connecting tube; 12. mounting block; 2. insertion part; 21. rotating shaft; 22. clamping block; 23. pressing bag; 3. display screen; 31. collar; 4. air bag; 41. air pipe; 42. branch pipe; 5. push-pull rod; 51. piston; 6. negative pressure tube; 61. adsorption tube; 7. camera; 71. sliding plate; 72. slider; 8. central axis; 81. handle; 82. isolation plate; 83. transfer chamber; 9. magnetic suction rod; 91. closing block; 92. spring. DETAILED DESCRIPTION

[0049] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0050] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0051] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0052] The following is further described in detail through specific implementation methods:

[0053] Embodiment 1:

[0054] As attached Figures 1 to 8 As shown: a laryngoscope with anti-reflux function, including a gripping portion 1 and an arc-shaped insertion portion 2, the insertion portion 2 is rotatably matched with the gripping portion 1, and an end of the insertion portion 2 away from the gripping portion 1 is fixedly connected to an airbag 4.

[0055] The center of the insertion part 2 is connected with a negative pressure tube 6, and one end of the negative pressure tube 6 away from the insertion tube is connected with a negative pressure machine. The airbags 4 are located on both sides of the negative pressure tube 6. The airbags 4 are connected with pneumatic parts for pumping gas through the air tube 41, and the air tube 41 is located around the negative pressure tube 6. In this embodiment, the pneumatic part includes a piston 51 that is slidably matched with the gripping part 1, and the end of the piston 51 away from the gripping part 1 is fixedly connected with a push-pull rod 5, and the push-pull rod 5 is engraved with scale lines (not shown in the figure); the gripping part 1 is also provided with a manual conversion component for converting the air tube 41 to be connected with one of the negative pressure tube 6 and the pneumatic part; a compression chamber is opened in the gripping part 1, and the piston 51 is located in the compression chamber. The compression chamber is connected with the negative pressure tube 6 and the air tube 41 through the manual conversion component; the pneumatic part is located in the gripping part 1.

[0056] The manual conversion assembly includes a transfer chamber 83 located in the gripping portion 1, and a central axis 8 is fixedly connected to the center of the transfer chamber 83, and the central axis 8 is rotatably matched with the gripping portion 1; a handle 81 and a plurality of isolation plates 82 are fixedly connected to the central axis 8, respectively, and the isolation plates 82 are located in the transfer chamber 83, and the isolation plates 82 are slidably matched with the gripping portion 1; and the top of the transfer chamber 83 is respectively connected to the negative pressure tube 6 and the air pipe 41, and the top of the transfer chamber 83 is connected to the compression chamber; the handle 81 is located outside the gripping portion 1, and the handle 81 and the isolation plate 82 are in the same vertical direction, a limiting groove is opened on the gripping portion 1, and the handle 81 is located in the limiting groove; when the handle 81 is located at the rightmost end of the limiting groove, the isolation plate 82 is located between the negative pressure tube 6 and the air pipe 41, and the air pipe 41 is connected to the compression chamber; when the handle 81 is located at the leftmost end of the limiting groove, the isolation plate 82 is located between the compression chamber and the negative pressure tube 6 and the air pipe 41, and the air pipe 41 is connected to the negative pressure tube 6.

[0057] A ring 31 is rotatably engaged with the top of the holding portion 1, and a display screen 3 is fixedly connected to the ring 31. The display screen 3 is electrically connected to a camera 7 through an electric wire, and the camera 7 is located on the side of the insertion portion 2 close to the holding portion 1; a sliding plate 71 is slidably engaged with the outside of the camera 7, and a slider 72 that slides with the insertion portion 2 is provided between the sliding plate 71 and the camera 7; a slide groove is opened in the insertion portion 2, the slider 72 is located in the slide groove, and bristles are provided on the side of the slider 72 close to the camera 7 (not shown in the figure), and a branch pipe 42 is connected to one side of the slide groove, and the end of the branch pipe 42 away from the slide groove is connected to the trachea 41. A magnetic rod 9 is provided between adjacent airbags 4, and a torsion spring (not shown in the figure) for resetting the magnetic rod 9 is sleeved on the magnetic rod 9. The magnetic rod 9 is slidably matched with the insertion portion 2, and a closing block 91 for closing the branch pipe 42 is provided on the side of the branch pipe 42 close to the magnetic rod 9, and a spring 92 is provided on the side of the closing block 91 away from the branch pipe 42; and an electromagnet (not shown in the figure) for actively controlling the movement of the closing block 91 is provided in the closing block 91, and the electromagnet is electrically connected to a control switch (not shown in the figure) through an electric wire, and the control switch is located on the gripping portion 1. When the magnetic rod 9 is in a normal state, the magnetic rod 9 is located outside the insertion portion 2, and the closing block 91 is against the branch pipe 42; when the magnetic rod 9 is hidden in the insertion portion 2, the closing block 91 is attracted by the magnetic rod 9 and moves to the side away from the branch pipe 42.

[0058] One end of the gripping portion 1 away from the push-pull rod 5 is connected to a connecting tube 11 , and the negative pressure tube 6 and the camera 7 are connected to the outside world through the connecting tube 11 .

[0059] The specific implementation process is as follows: first, the insertion part 2 and the holding part 1 are rotated, and the medical staff holds the holding part 1 to drive the insertion part 2 into the oral cavity. After the distal end of the insertion part 2 is inserted into the esophagus, the push-pull rod 5 is pushed to push the piston 51 to move, and the scale line is used to determine the movement depth of the piston 51 to understand the injection volume of the airbag 4, so as to assist in judging whether the insertion part 2 is stuck in the esophagus through the airbag 4 to prevent the occurrence of reflux.

[0060] Medical personnel use the piston 51 to pump air into the airbag 4 to fix the insertion part 2 inside the esophagus, so as to reduce the reflux generated during observation through the camera 7, and to reduce the blocking or contamination of the camera 7 due to the reflux, so as to facilitate the medical personnel to observe, and at the same time reduce the impact of intubation failure on aspiration.

[0061] During the laryngoscope insertion process, the electromagnet is activated by the control switch so that the closing block 91 overcomes the resistance of the spring, so that the external gas pushes the slider 72 to move to drive the sliding plate 71 to remove the obstruction of the camera 7, and then the electromagnet is turned off by the control switch so that the closing block 91 re-restricts the branch tube 42, so as to facilitate the real-time transmission of images to the display screen 3 through the camera 7.

[0062] When the airbag 4 is fully inflated, the airbag 4 pushes the magnetic rod 9 to move, and the magnetic rod 9 absorbs the closing block 91 to loosen the restriction of the closing block 91 on the branch pipe 42. At this time, the air in the slide groove is discharged into the trachea 41, and the slider 72 is driven to move by controlling the air pressure change of the trachea 41 and the opening and closing of the closing block 91, so that the bristles on the slider 72 clean the residual substances on the surface of the camera 7 to reduce external interference. When the camera 7 is not blocked by the sliding plate 71, the ring 31 is rotated on the grip to adjust the orientation of the display screen 3, so that medical personnel can observe the display screen 3 to identify structures such as the epiglottis and glottis during the use of the laryngoscope to assist in the intubation of the trachea 41.

[0063] Then, the handle 81 is used to drive the central axis 8 to rotate to control the internal orientation of the isolation plate 82 in the transfer chamber 83, so as to control the connectivity of the trachea 41, thereby controlling the expansion or contraction of the airbag 4. When the isolation plate 82 is located between the compression chamber and the negative pressure tube 6 and the trachea 41, and the trachea 41 is connected to the negative pressure tube 6, the air inside the airbag 4 or the branch tube 42 is sucked through the negative pressure tube 6, so that the sliding plate 71 is completely reset to completely block the camera 7. At the same time, the airbag 4 releases the restriction on the magnetic suction rod 9, so that the compressed spring 92 pushes the closing block 91 to close the branch tube 42 again, so as to facilitate the contamination of the camera 7 during the removal process, so as to reduce the processing workload of disinfecting the camera 7 during the subsequent disinfection process, thereby improving work efficiency.

[0064] Embodiment 2:

[0065] The difference from Example 1 is that the negative pressure tube 6 is connected to a plurality of adsorption tubes 61, the adsorption tubes 61 are located on the side of the insertion part 2 away from the airbag 4, and the adsorption tubes 61 are connected to a solenoid valve (not shown in the figure), and the solenoid valve is electrically connected to a button (not shown in the figure) for controlling the opening and closing of the solenoid valve through an electric wire, and the button is located at the top of the gripping part 1.

[0066] The specific implementation process is as follows: During use, if the patient's oral secretions are large and affect the use of the laryngoscope (such as saliva, nasal blood, etc.), the solenoid valve is controlled by a button to work, so as to absorb the liquid inside the mouth through the adsorption tube 61, so as to keep the mouth clean and reduce the risk of airway obstruction caused by blood or other oral secretions produced by patients with nose bleeding.

[0067] Embodiment 3:

[0068] The difference from the second embodiment is that a plurality of mounting blocks 12 are welded to one end of the gripping portion 1 close to the insertion portion 2, and extension blocks are provided on both sides of the mounting blocks 12, and the extension blocks are welded to the insertion portion 2; a rotating shaft 21 is clamped between the extension blocks and the mounting blocks 12;

[0069] A snap-fit ​​block (not shown in the figure) that is rotatably matched with the gripping portion 1 is provided between adjacent mounting blocks 12, and a plurality of snap-fit ​​blocks 22 are provided in the snap-fit ​​block. The end of the snap-fit ​​block 22 away from the gripping portion 1 is welded to the insertion portion 2, and the end of the snap-fit ​​block 22 close to the gripping portion 1 is welded with a protrusion (not shown in the figure); an annular groove is provided in the snap-fit ​​block, and the protrusion is located in the annular groove. A pressing capsule 23 is fixedly connected to the side of the rotating shaft 21 away from the mounting block 12, and the other end of the pressing capsule 23 is located on the outside of the snap-fit ​​block 22; and when the pressing capsule 23 moves to the lowest point, the pressing capsule 23 and the snap-fit ​​block 22 are butted.

[0070] The specific implementation process is as follows: the insertion part 2 is manually docked with the gripping part 1, and the negative pressure tube 6 in the insertion part 2 can be fixed by threading the negative pressure tube 6 of the gripping part 1. Then, the protrusion is matched with the annular groove to facilitate the connection between the gripping part 1 and the insertion part 2, and the closed card block 22 is gathered toward the center so that the protrusion does not engage with the annular groove to disconnect the gripping part 1 from the insertion part 2, so as to facilitate the installation and removal of the gripping part 1 from the insertion part 2. During use, the insertion of the rotating shaft 21 provides a rotation point for the rotation of the insertion part 2 and the gripping part 1 to facilitate movement, and then the card block 22 is pressed by the pressing capsule 23, so that the card block 22 is released to engage with the annular groove, so as to control the separation of the gripping part 1 and the insertion part 2.

[0071] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A laryngoscope with anti-reflux function, characterized in that: It comprises a gripping portion (1) and an insertion portion (2), wherein the insertion portion (2) and the gripping portion (1) are rotationally matched, and an end of the insertion portion (2) away from the gripping portion (1) is fixedly connected to an air bag (4); The center of the insertion portion (2) is connected to a negative pressure tube (6), the airbag (4) is located on both sides of the negative pressure tube (6), and the airbag (4) is connected to a pneumatic component for pumping gas through an air pipe (41); the pneumatic component is located in the gripping portion (1), and the gripping portion (1) is also provided with a manual conversion component for converting the air pipe (41) into communication with one of the negative pressure tube (6) and the pneumatic component; A display screen (3) is fixedly connected to the top of the gripping portion (1), the display screen (3) is electrically connected to a camera (7), and the camera (7) is located on a side of the insertion portion (2) close to the gripping portion (1); a sliding plate (71) is slidably engaged with the outside of the camera (7), and a slider (72) is provided between the sliding plate (71) and the camera (7) and is slidably engaged with the insertion portion (2); a slide groove is provided in the insertion portion (2), the slider (72) is located in the slide groove, and a brush is provided on a side of the slider (72) close to the camera (7), one side of the slide groove is connected to a branch pipe (42), and an end of the branch pipe (42) away from the slide groove is connected to the air pipe (41); A magnetic rod (9) is provided between adjacent airbags (4), the magnetic rod (9) and the insertion portion (2) are slidably matched, and a closing block (91) for closing the branch pipe (42) is provided on a side of the branch pipe (42) close to the magnetic rod (9), a spring (92) is provided on a side of the closing block (91) away from the branch pipe (42), and an electromagnet for actively controlling the movement of the closing block (91) is provided inside the closing block (91); When the magnetic attraction rod (9) is in a normal state, the magnetic attraction rod (9) is located outside the insertion portion (2), and the closing block (91) abuts against the branch pipe (42); when the magnetic attraction rod (9) is hidden in the insertion portion (2), the closing block (91) is attracted by the magnetic attraction rod (9) and moves to a side away from the branch pipe (42).

2. The laryngoscope with anti-reflux function according to claim 1, characterized in that: The pneumatic part comprises a piston (51) that is slidably matched with the gripping portion (1); one end of the piston (51) that is away from the gripping portion (1) is fixedly connected to a push-pull rod (5); a compression chamber is provided in the gripping portion (1); the piston (51) is located in the compression chamber; and the compression chamber is connected to a negative pressure tube (6) or an air tube (41) via a manual conversion assembly.

3. The laryngoscope with anti-reflux function according to claim 2, characterized in that: There are scale lines engraved on the push-pull rod (5).

4. The laryngoscope with anti-reflux function according to claim 3, characterized in that: A sleeve ring (31) is rotatably engaged at the top of the gripping portion (1), and the sleeve ring (31) is fixedly connected to the display screen (3).

5. The laryngoscope with anti-reflux function according to claim 4, characterized in that: The negative pressure tube (6) is connected to a plurality of adsorption tubes (61), the adsorption tubes (61) are located on a side of the insertion portion (2) away from the airbag (4), and the adsorption tubes (61) are connected to a solenoid valve, the solenoid valve is electrically connected to a button for controlling the opening and closing of the solenoid valve, and the button is located on the top of the gripping portion (1).

6. The laryngoscope with anti-reflux function according to claim 5, characterized in that: The manual conversion assembly comprises a transfer chamber (83) located in the gripping portion (1), a central shaft (8) being fixedly connected at the center of the transfer chamber (83), and the central shaft (8) and the gripping portion (1) being rotatably matched; a handle (81) and a plurality of isolation plates (82) are respectively fixedly connected to the central shaft (8), the isolation plates (82) are located in the transfer chamber (83), and the isolation plates (82) and the gripping portion (1) are slidably matched; and the top of the transfer chamber (83) is respectively connected to the negative pressure tube (6) and the air tube (41), and the top of the transfer chamber (83) is connected to the compression chamber; The handle (81) is located outside the gripping portion (1), and the handle (81) and the isolation plate (82) are in the same vertical direction; a limiting groove is formed on the gripping portion (1), and the handle (81) is located in the limiting groove; When the handle (81) is located at the rightmost end of the limiting groove, the isolation plate (82) is located between the negative pressure tube (6) and the air tube (41), and the air tube (41) is connected to the compression chamber; when the handle (81) is located at the leftmost end of the limiting groove, the isolation plate (82) is located between the compression chamber and the negative pressure tube (6) and the air tube (41), and the air tube (41) is connected to the negative pressure tube (6).

7. The laryngoscope with anti-reflux function according to claim 6, characterized in that: The trachea (41) is located around the negative pressure tube (6).

8. The laryngoscope with anti-reflux function according to claim 7, characterized in that: A plurality of mounting blocks (12) are fixedly connected to one end of the gripping portion (1) close to the insertion portion (2); extension blocks are provided on both sides of the mounting blocks (12); the extension blocks are fixedly connected to the insertion portion (2); and a rotating shaft (21) is clamped between the extension blocks and the mounting blocks (12); A snap-fit ​​block rotatably matched with the gripping portion (1) is provided between adjacent mounting blocks (12), a plurality of snap-fit ​​blocks (22) are provided in the snap-fit ​​block, one end of the snap-fit ​​block (22) away from the gripping portion (1) is fixedly connected to the insertion portion (2), and one end of the snap-fit ​​block (22) close to the gripping portion (1) is fixedly connected to a protrusion; an annular groove is provided in the snap-fit ​​block, and the protrusion is located in the annular groove.

9. The laryngoscope with anti-reflux function according to claim 8, characterized in that: A pressing capsule (23) is fixedly connected to one side of the rotating shaft (21) away from the mounting block (12), and the other end of the pressing capsule (23) is located outside the clamping block (22); and when the pressing capsule (23) moves to the lowest point, the pressing capsule (23) abuts against the clamping block (22).

10. The laryngoscope with anti-reflux function according to claim 9, characterized in that: One end of the gripping portion (1) away from the push-pull rod (5) is connected to a connecting tube (11), and the negative pressure tube (6) and the camera (7) are connected to the outside world via the connecting tube (11).

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