Respiration restorer for myasthenia gravis patient

Abstract

The invention belongs to the technical field of medical equipment, and particularly relates to a respiratory restorer for myasthenia gravis patients, which comprises a base and a PLC (programmable logic controller) fixedly mounted on the base, an environment humidity sensor is fixedly mounted at the upper end of the base, and a pulse oximeter is detachably mounted at the upper end of the base; the device further comprises an oxygen storage mechanism, a pressurizing oxygen supply mechanism, an automatic humidifying mechanism and a single-time oxygen supply amount control mechanism. Automatic start and stop of breathing assistance and oxygen supply amount adjustment can be achieved through accurate oxygen supply amount, low-noise design and oximeter feedback, humidification can be automatically regulated and controlled according to environment humidity and the like so as to protect the airway of a patient, the oxygen tanks can be automatically switched, and reminding can be conducted when the last tank is left; therefore, the traditional oxygen supply problem is effectively avoided, the adaptation requirement is met, and oxygen supply stability is guaranteed.

Description

Technical Field

[0001] This invention belongs to the field of medical device technology, and in particular relates to a respiratory recovery device for patients with myasthenia gravis. Background Technology

[0002] Patients with myasthenia gravis are unable to breathe normally due to weakness of the respiratory muscles (diaphragm and intercostal muscles). They need to be assisted or replaced by a respiratory recovery device. The respiratory recovery device rhythmically forces oxygen into the lungs, and then uses the elasticity of the lung tissue behind the thoracic cage to compress the oxygen in the lungs, so that the oxygen in the lungs is replaced by carbon dioxide and expelled outward. Then, through external mechanical chest compressions, the patient gradually regains the ability to breathe independently, such as the respiratory recovery device for intensive care proposed in patent publication number CN112169109A.

[0003] Current respiratory recovery devices mostly rely on fixed ventilation modes, which cannot flexibly adapt to the fluctuations in spontaneous breathing status of patients with myasthenia gravis (such as spontaneous breathing weakens when myasthenia symptoms worsen and spontaneous breathing strengthens when symptoms are relieved). This can easily lead to patient-ventilator asynchrony (patients feel short of breath and ventilator alarms). Furthermore, medical staff need to frequently switch modes manually, making it difficult to cope with sudden changes in respiratory status. Furthermore, it cannot automatically adjust the amount of oxygen supplied per dose according to demand, which leads to the following problems: when the patient's respiratory muscle strength is weakened (such as when myasthenic crisis worsens), the fixed amount of oxygen supplied per dose cannot meet the ventilation demand, resulting in increased arterial blood carbon dioxide partial pressure and insufficient ventilation; when the patient's spontaneous breathing ability recovers, the fixed amount of oxygen supplied per dose may exceed the actual demand, increasing the risk of pulmonary barotrauma (such as alveolar rupture) and further aggravating the respiratory burden. Oxygen supply and humidification cannot be automatically regulated. Excessively dry oxygen supply can cause the following problems: it damages the natural moisture barrier of the airway mucosa, leading to dehydration of airway epithelial cells and weakened ciliary movement (resulting in an inability to effectively expel secretions), which in turn causes sputum crusting and airway narrowing. This is especially true for patients with myasthenia gravis who already have a weak cough, as it can easily induce airway obstruction and atelectasis. At the same time, dry air irritates the airway mucosa, which may cause airway spasm and inflammatory response, aggravating patients' cough, sore throat and other discomforts, and even indirectly affecting the stability of respiratory function, increasing the risk of insufficient ventilation. Summary of the Invention

[0004] The purpose of this invention is to address the above-mentioned problems by providing a respiratory recovery device for patients with myasthenia gravis.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a respiratory recovery device for patients with myasthenia gravis, comprising a base and a PLC controller fixedly mounted on the base, wherein an ambient humidity sensor and a pulse oximeter are fixedly mounted on the upper end of the base, and further comprising: An oxygen storage mechanism is fixedly connected to the upper end of the base; A pressurized oxygen supply mechanism is fixedly installed on the upper end of the base and connected to the oxygen storage mechanism. The PLC controller is configured such that the blood oxygen saturation determined by the pulse oximeter controls the start of the pressurized oxygen supply mechanism, and the rate of increase of blood oxygen saturation after oxygen supply is negatively correlated with the single oxygen supply volume of the pressurized oxygen supply mechanism. An automatic humidification mechanism is installed on the pressurized oxygen supply mechanism and fixedly connected to the base; A single oxygen supply control mechanism is fixedly installed on the rear side of the pressurized oxygen supply mechanism to control the operation of the pressurized oxygen supply mechanism.

[0006] In the above-mentioned respiratory recovery device for patients with myasthenia gravis, the oxygen storage mechanism includes multiple oxygen tanks fixedly installed on the upper end of the base, each oxygen tank is equipped with a barometer, the multiple oxygen tanks are fixedly connected to the same multi-port pipe, and the multi-port pipe is equipped with multiple electrically controlled on / off valves corresponding to the oxygen tanks.

[0007] In the aforementioned respiratory recovery device for patients with myasthenia gravis, the pressurized oxygen supply mechanism includes an oxygen supply tube fixedly connected to the outlet of the multi-port tube. A breathing mask is fixedly connected to the end of the oxygen supply tube away from the multi-port tube. The breathing mask has a mouthpiece fixedly connected and conductive inside. An oxygen supply shell is also fixedly connected to the oxygen supply tube. A first one-way valve and a second one-way valve are installed on the oxygen supply tube on both sides of the oxygen supply shell. A pressurized piston is sealed inside the oxygen supply shell. Two pressure rods are symmetrically fixedly connected at both ends. The upper ends of the two pressure rods penetrate the upper end of the oxygen supply shell and are fixedly connected to the same force plate. The lower end of the force plate and the upper end of the oxygen supply shell are fixedly connected to two return springs sleeved on the pressure rods. The upper end of the oxygen supply shell is also fixedly connected to an extension shell that covers the force plate and the pressure rods. The upper end of the force plate is fixedly connected to a thrust permanent magnet plate. The top of the inner wall of the extension shell is fixedly connected to a thrust electromagnetic plate that is arranged opposite to the thrust permanent magnet plate.

[0008] In the aforementioned respiratory recovery device for patients with myasthenia gravis, the automatic humidification mechanism includes a humidification shell fixedly connected to the oxygen supply pipe. Multiple humidification nozzles are uniformly fixedly inserted into the side wall of the humidification shell. A hollow water supply shell is provided on the outer side of the humidification shell. The humidification nozzles are fixedly connected to the hollow water supply shell. A water supply pipe is fixedly connected to the outer wall of the hollow water supply shell. A water storage tank connected to the water supply pipe is fixedly installed at the upper end of the base. A water supply pump is also installed on the water supply pipe. The water supply pump is fixedly installed at the upper end of the base.

[0009] In the aforementioned respiratory recovery device for patients with myasthenia gravis, the single oxygen supply control mechanism includes a control shell fixedly connected to the outer wall of the extension shell. A drive screw is rotatably connected to the upper side of the inner wall of the control shell. A servo motor for driving the drive screw to rotate is fixedly installed on the outer wall of the control shell. An adjustment plate is threaded onto the rod wall of the drive screw. A resistance plate is fixedly installed at the bottom of the inner wall of the control shell. A conductive brush in contact with the resistance plate is fixedly connected to the lower end of the adjustment plate. A laser rangefinder is fixedly inserted into the rear side of the inner wall of the control shell, which is opposite to the adjustment plate.

[0010] In the above-mentioned respiratory recovery device for patients with myasthenia gravis, the upper side wall of the adjustment plate is provided with a threaded hole that is threadedly connected to the drive screw, the upper end of the adjustment plate is fixedly connected to a limit slider, and the top of the inner wall of the control shell is provided with a limit groove that matches and slides with the limit slider.

[0011] In the above-mentioned respiratory recovery device for patients with myasthenia gravis, a placement shell is fixedly connected to the upper end of the base, the pulse oximeter is inserted into the placement shell, and a layer of anti-slip compression pad is fixedly connected to the inner wall of the placement shell.

[0012] In the aforementioned respiratory recovery device for patients with myasthenia gravis, both sides of the bottom end of the conductive brush are designed with arc structures to allow the conductive brush to slide smoothly on the resistor plate.

[0013] Compared with existing technologies, the advantages of this invention are as follows: 1. Through the established oxygen storage mechanism, pressurized oxygen supply mechanism, single oxygen supply volume control mechanism, pulse oximeter, and PLC controller, oxygen supply assists the patient's respiratory recovery through quantitative pressurization. The single oxygen supply volume is more precise, the noise is lower, and it is more accurate, effectively avoiding the problem of inaccurate oxygen supply caused by traditional pump oxygen supply methods. Furthermore, based on the blood oxygen saturation feedback from the pulse oximeter, the patient's spontaneous breathing status is confirmed, and then the respiratory recovery assistance work is automatically started. The single oxygen supply volume is automatically adjusted based on the rate of change of blood oxygen saturation after oxygen supply, so that the single oxygen supply volume meets the appropriate usage needs.

[0014] 2. Through the set automatic humidification mechanism, ambient humidity sensor, and PLC controller, it can determine whether auxiliary humidification is needed based on ambient humidity, oxygen supply per unit time, and oxygen supply time, and automatically adjust the amount of humidification to avoid the problem of excessively dry oxygen supply damaging the patient's airway.

[0015] 3. Through the set oxygen storage mechanism and PLC controller, the oxygen in one oxygen tank can be replaced with the next oxygen tank immediately after the oxygen in the first oxygen tank is used up, and the system will promptly provide feedback and reminders when only the last oxygen tank is left to avoid oxygen shortage problems. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is a three-dimensional structural schematic diagram of the oxygen storage mechanism of the present invention; Figure 3 This is a three-dimensional cross-sectional view of the pressurized oxygen supply mechanism of the present invention; Figure 4 This is a three-dimensional structural schematic diagram of the automatic humidification mechanism of the present invention; Figure 5 This is a three-dimensional cross-sectional view of the single oxygen supply control mechanism of the present invention.

[0017] In the diagram: 1. Base; 2. Oxygen storage mechanism; 21. Oxygen tank; 22. Barometer; 23. Multi-port pipe; 24. Electrically controlled on / off valve; 3. Pressurized oxygen supply mechanism; 31. Oxygen supply pipe; 32. Breathing mask; 33. Sealing mouth; 34. Oxygen supply shell; 35. First one-way valve; 36. Second one-way valve; 37. Pressurized piston; 38. Pressurized rod; 39. Force plate; 310. Return spring; 311. Extension shell; 312. Thrust permanent magnet plate; 313. Thrust electromagnetic plate; 4. Automatic humidification mechanism; 41. Humidification shell; 42. Humidification nozzle; 43. Hollow water supply shell; 44. Water supply pipe; 45. Water tank; 46. Water supply pump; 5. Single oxygen supply control mechanism; 51. Control shell; 52. Drive screw; 53. Servo motor; 54. Adjustment plate; 55. Resistance plate; 56. Conductive brush; 57. Laser rangefinder; 6. PLC controller; 7. Ambient humidity sensor; 8. Pulse oximeter; 9. Placement shell. Detailed Implementation

[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0019] like Figures 1-5 As shown, a respiratory recovery device for patients with myasthenia gravis includes a base 1 and a PLC controller 6 fixedly mounted on the base 1. An ambient humidity sensor 7 and a pulse oximeter 8 are fixedly mounted on the upper end of the base 1. A housing 9 is fixedly connected to the upper end of the base 1, and the pulse oximeter 8 is inserted into the housing 9. A layer of anti-slip compression pad is fixedly connected to the inner wall of the housing 9. The device also includes: The oxygen storage mechanism 2 is fixedly connected to the upper end of the base 1. The oxygen storage mechanism 2 includes multiple oxygen tanks 21 fixedly installed on the upper end of the base 1. A pressure gauge 22 is installed on the oxygen tank 21. The multiple oxygen tanks 21 are fixedly connected to the same multi-port pipe 23. Multiple electrically controlled on / off valves 24 corresponding to the oxygen tanks 21 are installed on the multi-port pipe 23.

[0020] The pressurized oxygen supply mechanism 3 is fixedly installed on the upper end of the base 1 and connected to the oxygen storage mechanism 2. The PLC controller 6 is configured to control the start of the pressurized oxygen supply mechanism 3 based on the blood oxygen saturation determined by the pulse oximeter 8, and the rate of increase of blood oxygen saturation after oxygen supply is negatively correlated with the single oxygen supply volume of the pressurized oxygen supply mechanism 3. The pressurized oxygen supply mechanism 3 includes an oxygen supply pipe 31 fixedly connected to the outlet of the multi-port pipe 23. A breathing mask 32 is fixedly connected to the end of the oxygen supply pipe 31 away from the multi-port pipe 23. A mouthpiece 33 is fixedly connected and conductive inside the breathing mask 32. An oxygen supply shell 34 is also fixedly connected to the oxygen supply pipe 31. First one-way valves 35 located on both sides of the oxygen supply shell 34 are installed on the oxygen supply pipe 31. The second one-way valve 36 and the oxygen supply shell 34 are internally sealed with a pressure piston 37. Two pressure rods 38 are symmetrically fixedly connected to the upper end of the pressure piston 37. The upper ends of the two pressure rods 38 penetrate the upper end of the oxygen supply shell 34 and are fixedly connected to the same force plate 39. The lower end of the force plate 39 and the upper end of the oxygen supply shell 34 are fixedly connected to two return springs 310 sleeved outside the pressure rods 38. The upper end of the oxygen supply shell 34 is also fixedly connected to an extension shell 311 that covers the force plate 39 and the pressure rods 38. The upper end of the force plate 39 is fixedly connected to a thrust permanent magnet plate 312. The top of the inner wall of the extension shell 311 is fixedly connected to a thrust electromagnetic plate 313 that is opposite to the thrust permanent magnet plate 312.

[0021] An automatic humidification mechanism 4 is installed on the pressurized oxygen supply mechanism 3 and fixedly connected to the base 1. The automatic humidification mechanism 4 includes a humidification shell 41 fixedly connected to the oxygen supply pipe 31. Multiple humidification nozzles 42 are evenly fixedly inserted on the side wall of the humidification shell 41. A hollow water supply shell 43 is provided on the outside of the humidification shell 41. The humidification nozzles 42 are fixedly connected to the hollow water supply shell 43. A water supply pipe 44 is fixedly connected to the outer wall of the hollow water supply shell 43. A water storage tank 45 connected to the water supply pipe 44 is fixedly installed at the upper end of the base 1. A water supply pump 46 is also installed on the water supply pipe 44. The water supply pump 46 is fixedly installed at the upper end of the base 1.

[0022] A single-use oxygen supply control mechanism 5 is fixedly installed on the rear side of the pressurized oxygen supply mechanism 3 to control the operation of the pressurized oxygen supply mechanism 3. The single-use oxygen supply control mechanism 5 includes a control housing 51 fixedly connected to the outer wall of the extension housing 311. A drive screw 52 is rotatably connected to the upper side of the inner wall of the control housing 51. A servo motor 53 for driving the drive screw 52 to rotate is fixedly installed on the outer wall of the control housing 51. An adjusting plate 54 is threaded onto the rod wall of the drive screw 52. A resistance plate 55 is fixedly installed at the bottom of the inner wall of the control housing 51. A conductive brush 56 is fixedly connected to the lower end of the section plate 54 and contacts the resistor plate 55. A laser rangefinder 57 is fixedly inserted into the rear side of the inner wall of the control housing 51 and is arranged opposite to the adjustment plate 54. A screw hole is opened on the upper side wall of the adjustment plate 54 and threadedly connected to the drive screw 52. A limit slider is fixedly connected to the upper end of the adjustment plate 54. A limit groove is opened on the top of the inner wall of the control housing 51 and slides in conjunction with the limit slider. Both sides of the bottom end of the conductive brush 56 are designed with arc structure so that the conductive brush 56 slides smoothly on the resistor plate 55.

[0023] The operating principle of the present invention is described as follows: The breathing mask 32 is fixed to the patient's face, and the mouthpiece 33 inside the breathing mask 32 is inserted into the patient's mouth to avoid the problem of stable oxygen supply being affected by the patient's clenched jaw. The pulse oximeter 8 is clamped to the patient's fingertip to monitor the patient's blood oxygen saturation in real time. Blood oxygen saturation reflects the degree of oxygen binding in the blood and is a rapid indicator for judging whether there is hypoxia. When the blood oxygen saturation is less than 90%, it indicates that the patient's spontaneous breathing is not providing sufficient oxygen. At this time, the PLC controller 6 receives a signal from the pulse oximeter 8, controls the oxygen storage mechanism 2 to open, and activates the pressurized oxygen supply mechanism 3. One of the electrically controlled valves 24 corresponding to the oxygen pipe in the oxygen storage mechanism 2 opens, allowing the oxygen tank 21 to supply oxygen. The PLC controller 6 controls the servo motor 53 in the single oxygen supply control mechanism 5 to operate. The servo motor 53 drives the drive screw 52 to rotate. Through the threaded connection between the drive screw 52 and the adjusting plate 54, the adjusting plate 54 causes the conductive brush 56 to slide on the resistance plate 55, gradually reducing the resistance value of the resistance plate 55. The conductive brush 56 and the resistance plate 55 are connected in series in the power supply circuit of the thrust electromagnetic plate 313. Therefore, when the power supply equipment supplies power to the thrust electromagnetic plate 313, the thrust electromagnetic plate 313 generates the same magnetism as the thrust permanent magnet plate 312, thereby applying... The force plate 39 generates a magnetic thrust, which gradually increases, and in conjunction with the pressure rod 38, pushes the pressure piston 37 downward. The pressure piston 37 then pressurizes the air stored in the oxygen supply shell 34 through the second one-way valve 36 on the oxygen supply tube 31 into the breathing mask 32 to supply oxygen to the patient. The laser rangefinder 57 monitors the distance between itself and the adjustment plate 54 in real time. When the laser rangefinder 57 detects that the movement distance of the adjustment plate 54 has reached a threshold, the PLC controller 6 controls the servo motor 53 to connect to the reverse power supply circuit, so that the adjustment plate 54 drives the conductive brush 56 to reset to the initial position. As the resistance of the resistor plate 55 increases, the current supplied to the thrust electromagnetic plate 313 gradually decreases, thereby resetting the pressure piston 37 to the initial position and completing one oxygen supply operation. The operating frequency of the servo motor 53 controlled by the PLC controller 6 is determined based on the information pre-input by the patient and is pre-adjusted according to the patient's physical condition. After oxygen supply, the PLC controller 6 automatically adjusts the set distance threshold of the laser rangefinder 57 based on the rate of increase in the patient's blood oxygen saturation monitored by the pulse oximeter 8. When the rate of increase in the patient's blood oxygen saturation after oxygen supply is too high, it indicates that the amount of oxygen supplied at one time is too much. At this time, the PLC controller 6 adjusts the set threshold of the laser rangefinder 57 to be larger, that is, the adjustment plate 54 moves a shorter distance to control the servo motor 53 to connect to the reverse circuit to complete the single oxygen supply operation. This makes the pressure piston 37 move a shorter distance, and the amount of oxygen supplied at one time is less. This avoids the single oxygen supply being too high, which would exceed the patient's actual needs, increase the risk of lung barotrauma (such as alveolar rupture), and further increase the respiratory burden. Conversely, when the rate of increase in blood oxygen saturation is too low, the PLC controller 6 sets the detection threshold of the laser rangefinder 57 to a smaller value to avoid the single oxygen supply being insufficient to meet the ventilation needs, resulting in increased arterial blood carbon dioxide partial pressure and insufficient ventilation. The ambient humidity sensor 7 monitors the ambient humidity of the ward in real time. When the humidity of the ward is less than 30%, the PLC controller 6 controls the automatic humidification mechanism 4 to work. Because a dry environment will accelerate the loss of moisture in the gas, it will cause airway irritation to the patient's oxygen supply, and active humidification is required. Even if the humidity in the ward meets the standard, the timing module in the PLC controller 6 monitors the continuous oxygen supply time to the patient for more than 4 hours and also controls the automatic humidification mechanism 4 to work. This is because the oxygen supplied itself has extremely low humidity. Even with non-invasive ventilation, long-term inhalation will take away moisture from the airway, so humidification is required. The PLC controller 6 also determines the oxygen flow rate per unit time based on the oxygen supply frequency and the amount of oxygen supplied at one time. When the oxygen flow rate is greater than 10L / min, the PLC controller 6 controls the automatic humidification mechanism 4 to work at a higher power to increase the humidification capacity. This is because the higher the oxygen flow rate, the greater the humidification capacity is required per unit time to ensure adequate humidification. When the automatic humidification mechanism 4 is working, the PLC controller 6 controls the water supply pump 46 to work with the water supply pipe 44 to draw humidifying liquid from the water storage tank 45 and then deliver it to the hollow water supply shell 43. The liquid is then sprayed into the humidification shell 41 through multiple humidification nozzles 42 to humidify the delivered oxygen. The pressure gauge 22 installed on the oxygen tank 21 monitors the oxygen storage level in real time. When the oxygen in the oxygen tank 21 is insufficient, the PLC controller 6 automatically controls the electrically controlled valve 24 corresponding to the current oxygen tank 21 to close and opens the electrically controlled valve 24 corresponding to the next oxygen tank 21, so that the oxygen tank 21 can continuously supply oxygen. When the last oxygen tank 21 is used, the PLC controller 6 sends a warning signal to the receiving terminal of the staff to remind the staff to replace the empty oxygen tank 21 in time.

[0024] 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 principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A respiratory recovery device for patients with myasthenia gravis, comprising a base (1) and a PLC controller (6) fixedly mounted on the base (1), characterized in that, The upper end of the base (1) is fixedly equipped with an ambient humidity sensor (7) and a pulse oximeter (8) which is detachably mounted, and also includes: An oxygen storage mechanism (2) is fixedly connected to the upper end of the base (1); The pressurized oxygen supply mechanism (3) is fixedly installed on the upper end of the base (1) and connected to the oxygen storage mechanism (2). The PLC controller (6) is configured such that the blood oxygen saturation determined by the pulse oximeter (8) controls the start of the pressurized oxygen supply mechanism (3), and the rate of increase of blood oxygen saturation after oxygen supply is negatively correlated with the single oxygen supply amount of the pressurized oxygen supply mechanism (3). An automatic humidification mechanism (4) is installed on the pressurized oxygen supply mechanism (3) and fixedly connected to the base (1); A single oxygen supply control mechanism (5) is fixedly installed on the rear side of the pressurized oxygen supply mechanism (3) to control the operation of the pressurized oxygen supply mechanism (3).

2. The respiratory recovery device for patients with myasthenia gravis according to claim 1, characterized in that, The oxygen storage mechanism (2) includes multiple oxygen tanks (21) fixedly installed on the upper end of the base (1). A barometer (22) is installed on the oxygen tank (21). The multiple oxygen tanks (21) are fixedly connected to the same multi-port pipe (23). Multiple electrically controlled on / off valves (24) corresponding to the oxygen tanks (21) are installed on the multi-port pipe (23).

3. A respiratory recovery device for patients with myasthenia gravis according to claim 2, characterized in that, The pressurized oxygen supply mechanism (3) includes an oxygen supply pipe (31) fixedly connected to the outlet of the multi-port pipe (23). A breathing mask (32) is fixedly connected to one end of the oxygen supply pipe (31) away from the multi-port pipe (23). A mouthpiece (33) is fixedly connected and conductive inside the breathing mask (32). An oxygen supply shell (34) is also fixedly connected to the oxygen supply pipe (31). A first one-way valve (35) and a second one-way valve (36) are installed on both sides of the oxygen supply shell (34) on the oxygen supply pipe (31). A pressurized piston (37) is sealed inside the oxygen supply shell (34). Two pressurized rods (35, 36, 37) are symmetrically fixedly connected to the upper end of the pressurized piston (37). 8) The upper ends of the two pressure rods (38) penetrate the upper end of the oxygen supply shell (34) and are fixedly connected to the same force plate (39). The lower end of the force plate (39) and the upper end of the oxygen supply shell (34) are fixedly connected to two return springs (310) sleeved on the pressure rods (38). The upper end of the oxygen supply shell (34) is also fixedly connected to an extension shell (311) that covers the force plate (39) and the pressure rods (38). The upper end of the force plate (39) is fixedly connected to a thrust permanent magnet plate (312). The top of the inner wall of the extension shell (311) is fixedly connected to a thrust electromagnetic plate (313) that is opposite to the thrust permanent magnet plate (312).

4. A respiratory recovery device for patients with myasthenia gravis according to claim 3, characterized in that, The automatic humidification mechanism (4) includes a humidification shell (41) fixedly connected to the oxygen supply pipe (31). Multiple humidification nozzles (42) are uniformly fixedly inserted on the side wall of the humidification shell (41). A hollow water supply shell (43) is provided on the outside of the humidification shell (41). The humidification nozzles (42) are fixedly connected to the hollow water supply shell (43). A water supply pipe (44) is fixedly connected to the outer wall of the hollow water supply shell (43). A water storage tank (45) connected to the water supply pipe (44) is fixedly installed at the upper end of the base (1). A water supply pump (46) is also installed on the water supply pipe (44). The water supply pump (46) is fixedly installed at the upper end of the base (1).

5. A respiratory recovery device for patients with myasthenia gravis according to claim 3, characterized in that, The single oxygen supply control mechanism (5) includes a control shell (51) fixedly connected to the outer wall of the extension shell (311). A drive screw (52) is rotatably connected to the upper side of the inner wall of the control shell (51). A servo motor (53) for driving the drive screw (52) to rotate is fixedly installed on the outer wall of the control shell (51). An adjustment plate (54) is threaded onto the rod wall of the drive screw (52). A resistance plate (55) is fixedly installed at the bottom of the inner wall of the control shell (51). A conductive brush (56) in contact with the resistance plate (55) is fixedly connected to the lower end of the adjustment plate (54). A laser rangefinder (57) is fixedly inserted into the rear side of the inner wall of the control shell (51) and is arranged opposite to the adjustment plate (54).

6. A respiratory recovery device for patients with myasthenia gravis according to claim 5, characterized in that, The upper side wall of the adjustment plate (54) is provided with a threaded hole that is threadedly connected to the drive screw (52). The upper end of the adjustment plate (54) is fixedly connected to a limit slider. The top of the inner wall of the control shell (51) is provided with a limit groove that matches and slides with the limit slider.

7. A respiratory recovery device for patients with myasthenia gravis according to claim 1, characterized in that, The upper end of the base (1) is fixedly connected to a placement shell (9), the pulse oximeter (8) is inserted into the placement shell (9), and a layer of anti-slip extrusion pad is fixedly connected to the inner wall of the placement shell (9).

8. A respiratory recovery device for patients with myasthenia gravis according to claim 5, characterized in that, The bottom two sides of the conductive brush (56) are both designed with arc structures, so that the conductive brush (56) can slide smoothly on the resistor plate (55).

Images