Fixing device for intubation during myasthenia gravis rescue

Abstract

The invention belongs to the technical field of medical instruments, and particularly relates to a fixing device for intubation during myasthenia gravis rescue, which comprises a base plate and a bite block arranged on one side of the base plate, and further comprises a tube-penetrating heat insulation sleeve fixedly inserted on the side wall of the base plate and arranged on one side of the bite block, and a tube-penetrating heat insulation sleeve arranged on the other side of the bite block. The movable ventilation unit is arranged on the side wall of the side, away from the tooth cushion, of the base plate and arranged on one side of the pipe penetrating heat insulation sleeve. The connecting hose is communicated with the movable ventilation unit and used for being in butt joint with a trachea cannula. The heating unit is arranged in the pipe penetrating heat insulation sleeve. The trachea cannula and the breathing machine pipeline are independently fixed, the situation that the stability of the trachea cannula is affected when the breathing machine pipeline is dragged and air flow conveying kick flow vibrates can be avoided, the temperature of the conveyed air flow can be automatically adjusted and controlled, and the breathing machine pipeline is more stable. And the trachea cannula is prevented from being blocked by excessive secretions generated by stimulation of too low airflow temperature to a patient.

Description

Technical Field

[0001] The invention belongs to the technical field of medical instruments, and in particular relates to a fixing device for intubation during the rescue of myasthenia gravis. Background Art

[0002] Myasthenia gravis is an autoimmune disease that can cause muscle weakness. In related surgeries, endotracheal intubation is an important means to ensure the patient's breathing. During the operation, the patient is under anesthesia and connected to a ventilator through a endotracheal intubation for assisted breathing.

[0003] At present, after the tracheal tube is inserted, it needs to be fixed by a special device to prevent the trachea from sliding and affecting the assisted breathing effect, and to prevent the trachea from causing damage to the patient's mucosa. For example, the patent publication number CN208877633U discloses a fixing device for intubation during the rescue of myasthenia gravis. Now, a dental pad (the dental pad is placed in front of the patient's teeth to prevent the teeth from biting on the trachea and affecting the air intake) is usually fixed to the trachea by binding, and the dental pad is tied to the patient's head, so that the trachea can be stably fixed;

[0004] After the tracheal tube is fixed, the tube needs to be connected to the pipeline of the external ventilator to assist the patient's breathing through the ventilator. However, since there is a pipeline connecting the ventilator and the tube, during the operation, if the medical staff accidentally touches and stretches the pipeline, the tube may be dragged, thereby affecting the fixation effect of the tube. At the same time, when the ventilator is flowing gas, the speed and pressure of the gas may change due to the long overall pipeline, forming turbulence, which leads to uneven force and vibration. These vibrations may cause the tube end in the patient's body to shake slightly, which may cause damage to the tracheal mucosa. Summary of the invention

[0005] The purpose of the present invention is to solve the above problems and provide a fixing device for intubation during the rescue of myasthenia gravis.

[0006] To achieve the above object, the present invention adopts the following technical solution: a fixing device for intubation during the rescue of myasthenia gravis, comprising a base plate and a tooth pad arranged on one side of the base plate, and also comprising:

[0007] A pipe-through heat-insulating sleeve is fixedly inserted into the side wall of the base plate and arranged on one side of the tooth pad;

[0008] A movable ventilation unit is arranged on the side wall of the base plate away from the tooth pad and on one side of the pipe-through heat-insulating sleeve;

[0009] A connecting hose, connected to the mobile ventilation unit and used for docking with the endotracheal tube;

[0010] A heating unit is arranged inside the tube-insulating sleeve and is used to heat the airflow inside the endotracheal tube;

[0011] A temperature measuring component, arranged inside the mobile ventilation unit;

[0012] A clamping unit, arranged at two ends of the substrate;

[0013] The inflation component is connected to the air inlet end of the clamping unit and is used to supply air to the clamping unit.

[0014] In the above-mentioned fixing device for intubation during the rescue of myasthenia gravis, the mobile ventilation unit includes a mounting groove opened on the side wall of the base plate away from the tooth pad, a circular plate is movably provided inside the mounting groove, a ventilation hole is opened on the side wall of the circular plate, an air inlet pipe is fixedly plugged into the side wall of the circular plate away from the tooth pad, and the air inlet pipe is connected to the ventilation hole, a retaining ring is fixedly installed on the notch of the mounting groove, and the retaining ring is sleeved on the outside of the air inlet pipe, a flexible sealing sleeve is sleeved on the outside of the air inlet pipe, and the flexible sealing sleeve is fixedly arranged between the retaining ring and the circular plate, and both side walls of the circular plate are rotatably provided with a plurality of rollers The ball is installed in the circular plate, and the circular plate contacts the bottom of the mounting groove and the end face of the retaining ring through the ball. A plurality of pressure switches are fixedly connected to the groove wall of the mounting groove, and each pressure switch is evenly distributed in an outer ring of the circular plate. The moving contact of each pressure switch is fixedly connected to an elastic pull rope, and one end of each elastic pull rope away from the mounting groove is fixedly connected to the side wall of the circular plate. One end of the connecting hose is fixedly plugged into the end face of the retaining ring, and the connecting hose is connected to the air inlet pipe through the mounting groove and the vent. A buzzer is fixedly plugged into the side wall of the substrate away from the tooth pad, and each of the pressure switches is electrically connected to the buzzer.

[0015] In the above-mentioned fixing device for intubation during rescue of myasthenia gravis, the heating unit includes an annular groove opened on the inner wall of the tube insulation sleeve, and a group of electric heating wires are fixedly installed inside the annular groove.

[0016] In the above-mentioned fixing device for intubation during rescue of myasthenia gravis, the temperature measuring component includes two insulating connecting blocks fixedly installed on the inner wall of the air inlet pipe, and a thermistor is fixedly arranged between the two insulating connecting blocks, and the thermistor is connected in series with the heating wire.

[0017] In the above-mentioned fixing device for intubation during the rescue of myasthenia gravis, the clamping unit includes upper clamping arms fixedly installed on the upper sides of both ends of the base plate, and lower clamping arms are provided below the two upper clamping arms, and the lower clamping arms are fixedly connected to the end of the base plate, and the side walls of the upper clamping arms and the lower clamping arms close to the tooth pad are provided with strip grooves, and the notches of each strip groove are fixedly installed with elastic soft pads.

[0018] In the above-mentioned fixing device for intubation during the rescue of myasthenia gravis, the inflation component includes a frame-shaped air cavity opened inside a base plate, an inflation tube is fixedly inserted into the side wall of one side of the frame-shaped air cavity, and the end of the inflation tube away from the base plate is fixedly connected to a hand-pinch air bag, and the end of the hand-pinch air bag away from the inflation tube is fixedly connected to an air supply tube, and a one-way valve is installed inside the inflation tube and the air supply tube, and the groove wall of each of the strip grooves is opened with an inflation hole connected to the frame-shaped air cavity.

[0019] In the above-mentioned fixing device for intubation during the rescue of myasthenia gravis, an annular elastic heat-conductive film is fixedly installed on the notch of the annular groove, the heating wire is sleeved on the outside of the annular elastic heat-conductive film, a circular hole connected to the frame-shaped air cavity is opened on one side wall of the annular groove, and a manual valve is installed inside the circular hole.

[0020] In the above-mentioned fixing device for intubation during rescue of myasthenia gravis, a threaded column is fixedly installed at one end of the bite block close to the base plate, the threaded column is threadedly connected to the side wall of the base plate, and a latch is fixedly installed on the end face of the bite block.

[0021] Compared with the existing technology, the advantages of a fixing device for intubation during rescue of myasthenia gravis are:

[0022] 1. By cooperating with the base plate, tooth pad, tube insulation sleeve, mobile ventilation unit and connecting hose, and fixing the tracheal tube and the ventilator pipeline separately, it is possible to avoid the tracheal tube being pulled together when it is dragged by mistake, thereby ensuring the stability of the tracheal tube during the rescue process. Secondly, since the tracheal tube is not directly connected to the pipeline of the ventilator, it is possible to avoid the impact of the kick flow vibration generated when the airflow flows through the long pipeline on the stability of the trachea, and to avoid damage to the patient's tracheal mucosa as much as possible.

[0023] 2. The heating unit can be used to properly heat the oxygen entering the patient's body, thereby avoiding the low temperature of the oxygen entering the patient's body due to the low temperature environment of the operating room, causing respiratory irritation to the patient, resulting in increased and sticky respiratory secretions, thereby indirectly reducing the risk of endotracheal tube being blocked by secretions. Secondly, in conjunction with the temperature measurement component, the heating temperature of the incoming oxygen can be automatically adjusted based on the input oxygen temperature to ensure the balance of oxygen heating.

[0024] 3. Through the cooperation between the clamping unit and the inflation component, the substrate can be fixed by the patient's head through inflation clamping. Secondly, the cooperation between the annular elastic thermal conductive film, the circular hole and the manual valve can fix the endotracheal tube, ensuring the stability of the connection between the substrate and the endotracheal tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of a fixing device for intubation during the rescue of myasthenia gravis provided by the present invention;

[0026] Figure 2 It is a schematic diagram of the internal structure of a mounting groove of a fixing device for intubation during the rescue of myasthenia gravis provided by the present invention;

[0027] Figure 3 It is a schematic diagram of the internal structure of a tube-insulating sleeve of a fixing device for intubation during the rescue of myasthenia gravis provided by the present invention;

[0028] Figure 4 The invention provides a fixing device for intubation during the rescue of myasthenia gravis. Figure 2 A magnified view of the structure of part A;

[0029] Figure 5 It is a three-dimensional structural schematic diagram of a circular plate of a fixing device for intubation during the rescue of myasthenia gravis provided by the present invention;

[0030] Figure 6 It is a structural schematic diagram of a hand-squeezed airbag of a fixing device for intubation during the rescue of myasthenia gravis provided by the present invention;

[0031] Figure 7 The present invention is a schematic diagram of the stereoscopic structure of a dental pad of a fixing device for intubation during the rescue of myasthenia gravis provided by the present invention.

[0032] In the figure: 1 base plate, 2 tooth pad, 3 pipe insulation sleeve, 4 mobile ventilation unit, 41 installation groove, 42 round plate, 43 ventilation hole, 44 air inlet pipe, 45 retaining ring, 46 flexible sealing sleeve, 47 ball, 48 elastic pull rope, 49 pressure switch, 5 connecting hose, 6 heating unit, 61 annular groove, 62 heating wire, 7 temperature measuring component, 71 insulating connection block, 72 thermistor, 8 clamping unit, 81 upper clamping arm, 82 lower clamping arm, 83 strip groove, 84 elastic soft cushion, 9 inflation component, 91 frame air cavity, 92 inflation tube, 93 hand-pinch air bag, 94 air supply tube, 95 one-way valve, 96 inflation hole, 10 annular elastic thermal conductive film, 11 round hole, 12 manual valve, 13 threaded column, 14 latch tooth, 15 buzzer. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0034] like Figure 1-Figure 7As shown, a fixing device for intubation during the rescue of myasthenia gravis includes a base plate 1 and a tooth pad 2 arranged on one side of the base plate 1, and also includes: a tube-through-tube heat-insulating sleeve 3, which is fixedly inserted into the side wall of the base plate 1 and is arranged on one side of the tooth pad 2. A threaded column 13 is fixedly installed at one end of the tooth pad 2 close to the base plate 1, and the threaded column 13 is threadedly connected to the side wall of the base plate 1. A latch tooth 14 is fixedly installed on the end face of the tooth pad 2, and the top of the latch tooth 14 is arc-shaped to avoid damage to the inside of the oral cavity.

[0035] The movable ventilation unit 4 is arranged on the side wall of the substrate 1 away from the tooth pad 2, and is arranged on one side of the pipe insulation sleeve 3. The movable ventilation unit 4 includes a mounting groove 41 opened on the side wall of the substrate 1 away from the tooth pad 2. A circular plate 42 is movably arranged inside the mounting groove 41. A ventilation hole 43 is opened on the side wall of the circular plate 42. An air inlet pipe 44 is fixedly inserted into the side wall of the circular plate 42 away from the tooth pad 2, and the air inlet pipe 44 is connected to the ventilation hole 43. A retaining ring 45 is fixedly installed on the notch of the mounting groove 41, and the retaining ring 45 is sleeved on the outside of the air inlet pipe 44. A flexible sealing sleeve 46 is sleeved on the outside of the air inlet pipe 44, and the flexible sealing sleeve 46 is fixedly arranged between the retaining ring 45 and the circular plate 42. A plurality of balls 47 are rotatably arranged on both side walls of the circular plate 42, and the circular plate 42 contacts the bottom of the mounting groove 41 and the end face of the retaining ring 45 through the balls 47. The mounting groove 41 A plurality of pressure switches 49 are fixedly connected to the groove wall, and each pressure switch 49 is evenly distributed in an outer ring shape of the circular plate 42. The moving contact of each pressure switch 49 is fixedly connected to an elastic pull rope 48, and one end of each elastic pull rope 48 away from the mounting groove 41 is fixedly connected to the side wall of the circular plate 42. One end of the connecting hose 5 is fixedly plugged with the end face of the retaining ring 45, and the connecting hose 5 is connected to the air inlet pipe 44 through the mounting groove 41 and the vent 43. A buzzer 15 is fixedly plugged into the side wall of the substrate 1 away from the tooth pad 2, and each pressure switch 49 is electrically connected to the buzzer 15. The air inlet pipe 44 adopts a corrugated tube with elastic expansion and contraction performance. When subjected to a vertical pulling force to the substrate 1, the air inlet pipe 44 can expand and contract to a certain length. Secondly, when subjected to the pulling force, under the action of the latching teeth 14 of the tooth pad 2, the substrate 1 will not move.

[0036] The connecting hose 5 is connected to the mobile ventilation unit 4 and is used for docking with the endotracheal tube;

[0037] The heating unit 6 is arranged inside the tube insulation sleeve 3 and is used to heat the airflow inside the endotracheal tube. The heating unit 6 includes an annular groove 61 opened on the inner wall of the tube insulation sleeve 3. A group of heating wires 62 are fixedly installed inside the annular groove 61. The heating temperature of the heating wires 62 is in the range of 35°C to 43°C.

[0038] The temperature measuring component 7 is arranged inside the mobile ventilation unit 4, and the temperature measuring component 7 includes two insulating connecting blocks 71 fixedly installed on the inner wall of the intake pipe 44, and a thermistor 72 is fixedly arranged between the two insulating connecting blocks 71, and the thermistor 72 is connected in series with the heating wire 62, and an insulating heat-conducting sleeve (not shown in the figure) is arranged on the outer side of the thermistor 72 to prevent the thermistor 72 from directly contacting the airflow.

[0039] The clamping unit 8 is arranged at both ends of the substrate 1, and the clamping unit 8 includes upper clamping arms 81 fixedly installed on the upper sides of both ends of the substrate 1, and lower clamping arms 82 are provided below the two upper clamping arms 81, and the lower clamping arms 82 are fixedly connected to the end of the substrate 1, and the side walls of the upper clamping arms 81 and the lower clamping arms 82 close to the tooth pad 2 are provided with strip grooves 83, and the notches of each strip groove 83 are fixedly installed with elastic pads 84, the upper clamping arms 81 and the lower clamping arms 82 are made of metal materials or plastic materials with certain elastic properties, and the elastic pads 84 will expand and bulge under the action of air pressure.

[0040] The inflation component 9 is connected with the air inlet end of the clamping unit 8 and is used to supply air to the clamping unit 8. The inflation component 9 includes a frame-shaped air cavity 91 opened inside the substrate 1. An inflation tube 92 is fixedly inserted into the side wall of one side of the frame-shaped air cavity 91, and the end of the inflation tube 92 away from the substrate 1 is fixedly connected with a hand-pinch air bag 93, and the end of the hand-pinch air bag 93 away from the inflation tube 92 is fixedly connected with an air supply tube 94. A one-way valve 95 is installed inside the inflation tube 92 and the air supply tube 94, and the groove wall of each strip groove 83 is provided with an inflation hole 96 connected with the frame-shaped air cavity 91. Under the action of the one-way valve 95, when the hand-pinch air bag 93 is pinched, the air inside the hand-pinch air bag 93 can only be discharged along the inflation tube 92.

[0041] An annular elastic heat-conductive film 10 is fixedly installed at the groove opening of the annular groove 61, and the heating wire 62 is sleeved on the outside of the annular elastic heat-conductive film 10. A circular hole 11 connected to the frame-shaped air cavity 91 is opened on one side wall of the annular groove 61, and a manual valve 12 is installed inside the circular hole 11. An exhaust hole is opened on the side wall of the frame-shaped air cavity 91, and the inner thread of the exhaust hole is matched with a threaded plug, which is used to discharge excess gas inside the frame-shaped air cavity 91 after use.

[0042] The operating principle of the present invention is now described as follows: after all the preparations are made, the endotracheal tube is first passed through the tube-insulating sleeve 3, and then the laryngoscope is inserted from the right corner of the patient's mouth, the epiglottis is lifted, and the glottis is exposed. Then, the endotracheal tube is inserted into the patient's trachea through the glottis, and the correct position of the tube is confirmed by auscultating the breath sounds of both lungs and observing the rise and fall of the chest, indicating that the insertion of the endotracheal tube has been completed. Subsequently, the staff inserts the tooth pad 2 into the patient's mouth so that the two latch teeth 14 are respectively located inside and outside the patient's teeth. Through the patient's teeth, the tooth pad 2 can be prevented from moving inside and outside to a certain extent. After the dental pad 2 is inserted, the base plate 1 is above the patient's mouth. At this time, the two upper clamping arms 81 and the two lower clamping arms 82 are respectively on both sides of the patient's face (the ends of the two upper clamping arms 81 away from the base plate 1 extend to one side of the patient's ear and are basically level with the top of the ear, and the ends of the two lower clamping arms 82 away from the base plate 1 extend to the lower side of the patient's ear). Then, the staff opens the manual valve 12 and repeatedly pinches the hand-pinch airbag 93 by hand. When the hand-pinch airbag 93 is squeezed and pinched, the air inside the hand-pinch airbag 93 will enter the frame-shaped air cavity 91. At this time, the frame-shaped air cavity 91 is The excess air will enter each strip groove 83 and the annular groove 61 through each inflation hole 96 and the circular hole 11 respectively. After squeezing the hand-kneading airbag 93 four times, the annular elastic heat-conductive film 10 will expand due to the increase in air pressure, so that the annular elastic heat-conductive film 10 will abut against the outer wall of the tracheal cannula, thereby achieving the effect of clamping and fixing the tracheal cannula, ensuring the stability between the tracheal cannula and the tube-insulating sleeve 3. At this time, the staff closes the manual valve 12, and then continues to repeatedly squeeze the hand-kneading airbag 93. As the air inside each strip groove 83 continues to increase, the elastic film at each strip groove 83 is The soft cushion 84 is squeezed and expanded, so that it will abut against the patient's face, playing the role of clamping and fixing the substrate 1 on the patient's head, and the bite fixation between the tooth pad 2 and the patient's teeth can ensure the stability of the entire device. Then, the end of the tracheal tube located outside the patient is docked and fixed with the connecting hose 5, and the air supply pipeline of the ventilator is docked and fixed with the air inlet pipe 44. At this point, the fixation of the tracheal tube is completed, and then the power supply circuit board on the substrate 1 (the power supply circuit board is used to distribute the power of the external power supply to the buzzer 15 and the heating wire 62, not shown in the figure) is connected to the external power supply;

[0043] During the rescue process, the oxygen delivered by the ventilator enters the endotracheal tube through the air supply pipeline, the air inlet pipe 44, the ventilator 43, and the connecting hose 5, and is finally delivered to the patient's body. If the air supply pipeline of the ventilator is dragged (the air supply pipeline of the ventilator is long, and during the rescue process, when the medical staff does not pay attention to the air supply pipeline, there is a possibility that the staff accidentally touches and drags the air supply pipeline of the ventilator), the dragging force will act on the air inlet pipe 44. When the air inlet pipe 44 is subjected to the dragging force, under the action of the ball 47, the air inlet pipe 44 will drag the circular plate 42 to slide laterally in the mounting groove 41, thereby offsetting the dragging force to a certain extent. Thus, the dragging force can be avoided from affecting the endotracheal tube. Since the dragging force acts on the base plate 1, the fixation between the tooth pad 2, the upper clamp arm 81, the lower clamp arm 82 and the patient's head can also prevent the dragging force from affecting the endotracheal tube. At the same time, the elastic pull rope 48 in the opposite direction to the dragging force will also be subjected to tension. At this time, the moving contact of the pressure switch 49 on this side will be pulled closed, thereby connecting the connection circuit between the buzzer 15 and the external power supply circuit. The buzzer 15 will be powered on immediately to alarm, thereby reminding the staff to stop dragging the gas supply pipeline of the ventilator, and the staff should check the gas supply pipeline of the ventilator.

[0044] When the airflow delivered by the ventilator passes through the air inlet pipe 44, the airflow will contact the thermistor 72 (the outer side of the thermistor 72 is provided with an insulating heat-conductive sleeve to prevent the thermistor 72 from directly contacting the airflow). The temperature of the airflow will cause the temperature at the thermistor 72 to change. When the temperature of the airflow is higher, the resistance of the thermistor 72 is greater (the thermistor 72 is a positive temperature coefficient thermistor 72, and its detection range is in the range of 0°C to 70°C. Within this range, the resistance of the thermistor 72 increases synchronously with the increase of temperature). Conversely, the lower the temperature of the airflow, the lower the resistance of the thermistor 72. Since the temperature in the operating room is usually low, the temperature of the airflow delivered by the ventilator will dissipate outward when passing through the air supply pipeline. In order to prevent the airflow temperature from being too low (usually below 30°C) and affecting the patient, After the power supply circuit board on the substrate 1 is connected to the external power supply, the heating wire 62 starts to work. When the temperature of the airflow is low, since the resistance of the thermistor 72 is also low, the current passing into the heating wire 62 becomes larger. At this time, the heating temperature of the heating wire 62 becomes larger (the heating temperature of the heating wire 62 is in the range of 35°C to 43°C. Since the heat heated by the heating wire 62 needs to pass through the annular elastic thermal conductive film 10 and the endotracheal tube to exchange heat with the airflow inside the endotracheal tube, even if the heating wire 62 is at the maximum heating temperature, the maximum temperature of the airflow will not exceed 37°C), so that the airflow about to enter the patient's body can be heated to a certain extent, avoiding the airflow temperature being too low to cause the patient's airway to be stimulated and produce excessive secretions, thereby preventing the excessive secretions from blocking the endotracheal tube.

[0045] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A fixing device for intubation during the rescue of myasthenia gravis, comprising a base plate (1) and a tooth pad (2) arranged on one side of the base plate (1), characterized in that: Also includes: A pipe-through heat-insulating sleeve (3) is fixedly inserted into the side wall of the base plate (1) and is arranged on one side of the tooth pad (2); A movable ventilation unit (4) is arranged on a side wall of the base plate (1) away from the tooth pad (2) and is arranged on one side of the pipe-through heat insulation sleeve (3); A connecting hose (5) is connected to the mobile ventilation unit (4) and is used for docking with the endotracheal tube; A heating unit (6) is arranged inside the tube-insulating sleeve (3) and is used to heat the airflow inside the endotracheal tube; A temperature measuring component (7) is arranged inside the mobile ventilation unit (4); Clamping units (8) are arranged at two ends of the substrate (1); The inflation component (9) is connected to the air inlet end of the clamping unit (8) and is used to supply air to the clamping unit (8).

2. A fixing device for intubation during rescue of myasthenia gravis according to claim 1, characterized in that: The movable ventilation unit (4) comprises a mounting groove (41) provided on a side wall of a substrate (1) away from the tooth pad (2); a circular plate (42) is movably provided inside the mounting groove (41); a vent hole (43) is provided on the side wall of the circular plate (42); an air intake pipe (44) is fixedly plugged into the side wall of the circular plate (42) away from the tooth pad (2); and the air intake pipe (44) is communicated with the vent hole (43); a retaining ring (45) is fixedly installed on the notch of the mounting groove (41); and the retaining ring (45) is sleeved on the outside of the air intake pipe (44); a flexible sealing sleeve (46) is sleeved on the outside of the air intake pipe (44); and the flexible sealing sleeve (46) is fixedly arranged between the retaining ring (45) and the circular plate (42); and a plurality of balls (47) are rotatably provided on both side walls of the circular plate (42); and the circular plate (42) is rotated by the balls to rotate. (47) contacts the bottom of the mounting groove (41) and the end face of the retaining ring (45); a plurality of pressure switches (49) are fixedly connected to the groove wall of the mounting groove (41), and each pressure switch (49) is evenly distributed in an annular shape outside the circular plate (42); a moving contact of each pressure switch (49) is fixedly connected to an elastic pull rope (48), and one end of each elastic pull rope (48) away from the mounting groove (41) is fixedly connected to the side wall of the circular plate (42); one end of the connecting hose (5) is fixedly plugged into the end face of the retaining ring (45), and the connecting hose (5) is connected to the air inlet pipe (44) through the mounting groove (41) and the vent hole (43); a buzzer (15) is fixedly plugged into the side wall of the substrate (1) away from the tooth pad (2), and each pressure switch (49) is electrically connected to the buzzer (15).

3. A fixing device for intubation during rescue of myasthenia gravis according to claim 2, characterized in that: The heating unit (6) comprises an annular groove (61) formed on the inner wall of the pipe-through heat-insulating sleeve (3), and a group of electric heating wires (62) are fixedly installed inside the annular groove (61).

4. A fixing device for intubation during rescue of myasthenia gravis according to claim 3, characterized in that: The temperature measuring component (7) comprises two insulating connecting blocks (71) fixedly mounted on the inner wall of the air intake pipe (44), a thermistor (72) is fixedly arranged between the two insulating connecting blocks (71), and the thermistor (72) is connected in series with the heating wire (62).

5. The fixing device for intubation during rescue of myasthenia gravis according to claim 3, characterized in that: The clamping unit (8) comprises upper clamping arms (81) fixedly mounted on the upper sides of both ends of the base plate (1); lower clamping arms (82) are provided below the two upper clamping arms (81), and the lower clamping arms (82) are fixedly connected to the ends of the base plate (1); side walls of the upper clamping arms (81) and the lower clamping arms (82) close to the tooth pad (2) are provided with strip grooves (83), and the notches of each strip groove (83) are fixedly mounted with elastic soft pads (84).

6. A fixing device for intubation during rescue of myasthenia gravis according to claim 5, characterized in that: The inflation component (9) comprises a frame-shaped air cavity (91) opened inside the base plate (1), an inflation tube (92) is fixedly inserted into a side wall of one side of the frame-shaped air cavity (91), and the end of the inflation tube (92) away from the base plate (1) is fixedly connected to a hand-pinch air bag (93), and the end of the hand-pinch air bag (93) away from the inflation tube (92) is fixedly connected to an air supply tube (94), and a one-way valve (95) is installed inside the inflation tube (92) and the air supply tube (94), and the groove wall of each of the strip grooves (83) is provided with an inflation hole (96) connected to the frame-shaped air cavity (91).

7. A fixing device for intubation during rescue of myasthenia gravis according to claim 6, characterized in that: An annular elastic heat-conducting film (10) is fixedly installed at the groove opening of the annular groove (61), and the heating wire (62) is sleeved on the outer side of the annular elastic heat-conducting film (10). A circular hole (11) connected to the frame-shaped air cavity (91) is opened on one side groove wall of the annular groove (61), and a manual valve (12) is installed inside the circular hole (11).

8. The fixing device for intubation during rescue of myasthenia gravis according to claim 1, characterized in that: A threaded column (13) is fixedly mounted on one end of the tooth pad (2) close to the base plate (1); the threaded column (13) is threadedly connected to the side wall of the base plate (1); and a latching tooth (14) is fixedly mounted on the end surface of the tooth pad (2).

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