CN116271733A - Respiratory function nursing trainer - Google Patents

Abstract

The invention discloses a respiratory function nursing training device which comprises a respirator top shell, a suction nozzle and an air inlet nozzle, wherein the suction nozzle is connected to one side of the respirator top shell, the air inlet nozzle is connected to the other side of the respirator top shell, a filter assembly is embedded into the respirator top shell, an exhalation hole is formed in the bottom end of the respirator top shell, and an impact assembly is connected to one side of the filter assembly.

Description

Respiratory function nursing trainer

Technical Field

The invention relates to the technical field of respiratory apparatuses, in particular to a respiratory function nursing and training device.

Background

The respiratory training has the advantages of strengthening respiratory muscles, improving lung functions, improving hypopnea, improving hypoxia and the like, so that the respiratory training is needed to be carried out on patients suffering from lung diseases and respiratory diseases at ordinary times, and the respiratory training is helpful for improving the illness state.

Through breathing training, can strengthen the respiratory muscle, to chronic heart failure patient, breathing training can play the prevention, perhaps delay the effect of breathing in muscle atrophy, simultaneously, breathing training process can help the patient subjective extension expiration time, makes muscle sympathetic nerve activity be restrained, reduces heart afterload, also can improve lung function in addition: for healthy or unhealthy people, respiratory training can exercise respiratory muscles and abdominal muscles, and improve hypopnea: for patients with obstructive sleep apnea hypopnea syndrome, respiratory training may strengthen the diaphragm respiratory muscles, enhance respiratory muscle strength and endurance, and thereby improve hypopnea.

For this, chinese application number: CN108970019B discloses a respiratory function training device, which effectively solves the problem that the existing respiratory training device only trains the inspiration and expiration of chest type respiration of a user, but does not have abdominal type respiratory training capability; the technical scheme is that the chair comprises a seat arranged on the ground, wherein the rear end of the seat is fixedly connected with a chair back, the chair back is characterized in that the upper end of the chair back is connected with a shoulder pressing plate in a vertical sliding manner, the lower end of the chair back is connected with an abdomen plate in a front-back sliding manner, the lower end of the seat is fixedly connected with a driving structure, and the driving structure is connected with the shoulder pressing plate and the abdomen plate through a transmission structure; the invention has simple structure, easy operation, strong practicability, lower manufacturing cost and convenient popularization.

For this, chinese application number: CN209790716U discloses a respiratory function trainer, including the main part box, first cavity and second cavity have been seted up to the inside of main part box, and the second cavity is located the below of first cavity, and first spacing groove and second spacing groove have been seted up to the left surface of main part box, and the second spacing groove is located the below of first spacing groove. This respiratory training device for department of respiration can pull first piston when the patient carries out the inspiration and remove to the right side, temper the suction of patient through the tension of first spring, can promote the second piston through the expiration of patient and remove to the right side, temper the exhale of patient through the tension of second spring, can be better through promoting the removal pipe to the device inside wall, thereby make first air duct and first air vent be linked together, the patient carries out suction exercise through the rigid tube, remove through pulling the removal pipe to the device outside, temper the exhale of patient through the rigid tube.

To the disclosure of the above and other typical prior art, the present respiratory exercise training device has the following problems in the exercise phase of the patient, wherein in the respiratory process, the air is directly sucked through the mouth, dust in the air accompanies the human body sucked by the air, and the oral cavity can not have the effect of filtering the air, in addition, in the training, if the postoperative patient can not control, the respiratory air suction difficulty is high, the hypoxia of the patient can be caused, and the supply relation of oxygen during the exercise needs manual adjustment of the patient.

Disclosure of Invention

The invention aims to provide a respiratory function nursing training device, which aims to solve the problem that the respiratory training device provided in the background art is poor in adaptability to postoperative patients.

In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a respiratory function nursing trainer, includes respirator top shell, suction nozzle and air inlet nozzle, one side of respirator top shell is connected with the suction nozzle, the opposite side of respirator top shell is connected with the air inlet nozzle, the inside embedding of respirator top shell has filter unit, the exhalation hole has been seted up to the bottom of respirator top shell, one side of filter unit is connected with the striking subassembly;

the filter assembly comprises a limit card, the limit card is embedded in the respirator top shell and the respirator bottom shell, a filter sheet is also embedded in the respirator top shell and the respirator bottom shell, filter screens are wrapped on two sides of the filter sheet, a magnet is fixedly connected to the bottom end of the filter screen, a breathing hole is formed in the filter sheet, and a baffle sheet is embedded in the breathing hole;

the striking subassembly includes the track pipe, the inside fixedly connected with track pipe of respirator drain pan, the upper end cover of track pipe has connect the striking cover, the inside embedding of striking cover has the striking ball, the track groove has been seted up to the both sides of striking cover, the inside of track pipe still has the striking pole of embedding, the striking ball embedding is extended from the inside in track groove in its both ends in the inside of track pipe, sliding connection between striking ball and the track groove.

As a preferable technical scheme of the invention, the top shell of the respirator and the bottom shell of the respirator are mutually buckled, the top shell of the respirator and the bottom shell of the respirator are buckled and connected through a buckling structure, the left side and the right side of the bottom shell of the respirator are also connected with a suction nozzle and an air inlet nozzle, and the suction nozzle and the air inlet nozzle at the upper end of the bottom shell of the respirator are matched with the suction nozzle and the air inlet nozzle at the upper end of the top shell of the respirator.

As a preferable technical scheme of the invention, the limit card and the filter disc are divided into an upper part and a lower part, the upper half parts of the limit card and the filter disc are connected with the top shell of the respirator in a sliding way, and the lower half parts of the limit card and the filter disc are connected with the bottom shell of the respirator in a sliding way.

As a preferable technical scheme of the invention, the limit card is connected with the upper half part and the lower half part of the filter disc through the magnet, and the N pole of the magnet of the lower part corresponds to the S pole of the magnet of the upper half part.

As a preferable technical scheme of the invention, three groups of limit cards are arranged, two groups of the three groups of limit cards correspond to each other, and two groups of limit cards close to one side of the air inlet nozzle correspond to each other.

As a preferable technical scheme of the invention, the last group of limiting clamps are fixedly connected to the inner wall of the bottom shell of the respirator, and the last group of limiting clamps are close to one side of the suction nozzle.

As a preferable technical scheme of the invention, the two groups of filter screens are wrapped on the left side and the right side of the filter sheet, the baffle sheet embedded in the breathing hole is in a horn shape, and the opening of one side of the baffle sheet close to the suction nozzle is large, and the opening of the baffle sheet far away from the suction nozzle is small.

As a preferable technical scheme of the invention, the impact ball is embedded in the track pipe and the impact sleeve, the impact ball is a solid metal sphere, one side of the impact rod is embedded in the track pipe, and the other end of the impact rod is connected with the filter screen.

As a preferable technical scheme of the invention, the inside of the respirator bottom shell also comprises an emergency component, the emergency component comprises an air inlet nozzle, the air inlet nozzle is arranged in the respirator bottom shell, an air inlet conduit is embedded in the air inlet nozzle, two sides of the respirator top shell and the respirator bottom shell are fixedly connected with reserve air bags, and the reserve air bags are communicated with the air inlet conduit.

As a preferable technical scheme of the invention, the reserve air bag is communicated with the inside of the respirator bottom shell through the air inlet pipe and the air inlet nozzle, the upper end of the reserve air bag is also provided with an air inlet valve, and the inside of the reserve air bag is hollow and filled with air.

Compared with the prior art, the invention has the beneficial effects that:

1. according to the invention, the filter disc and the filter screen are arranged to filter the air inhaled into the top shell of the respirator, dust in the air is filtered, the dust is prevented from being inhaled into the oral cavity of a patient, in addition, a single-inlet and single-outlet mode is adopted, the air is exhausted through the exhalation hole after being inhaled through the air inlet nozzle, the filter disc and the filter screen are pushed to move in the top shell of the respirator in the respiratory stage of the patient, so that the diaphragm muscle of the patient is trained, the patient can discharge the liquid in the body by training the contraction of the diaphragm muscle, in addition, when the patient is in hypoxia, only the head is required to be lifted upwards, the smoothness of the oral cavity of the patient communicated with the respiratory tract is ensured by lifting the head, the upper filter disc, the lower filter disc and the filter screen are prevented from being misplaced by the impact ball in the impact sleeve, when the misplaced is generated, the air can be directly inhaled into the lung by the patient through the air inlet nozzle, the unconscious head lifting action of the human body is utilized to control the misplaced between the filter disc and the filter screen, and the hypoxia is not required to be performed in the training period, and the patient can be subjected to active oxygen removal operation of the patient when hypoxia occurs, and the hypoxia is enhanced.

2. According to the invention, the reserve air bag, the air inlet conduit and the air inlet nozzle are arranged, when hypoxia occurs, the air in the reserve air bag can be accelerated to circulate in the top shell of the respirator by pressing the reserve air bag, so that the air in the oral cavity of a patient can be accelerated to be extruded to the lung of the patient, and the negative symptoms caused by hypoxia of the patient can be relieved, wherein the air inlet valve can not only suck the air into the reserve air bag, but also can directly form connection with medical oxygen equipment through an external pipeline, and different requirements of the patient can be met.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is an overall schematic of the present invention;

FIG. 3 is a schematic cross-sectional structural view of the top shell of the respirator of the present invention;

FIG. 4 is a schematic view of the emergency assembly of the present invention;

FIG. 5 is a schematic view of the structure of the limiting card and the filter sheet of the present invention;

FIG. 6 is a schematic view of an exploded view of the track pipe and the impact ball of the present invention;

FIG. 7 is a schematic view of the structure of the filter according to the present invention in a dislocated state;

FIG. 8 is a schematic illustration of the filter screen and magnet of the present invention exploded;

fig. 9 is a schematic view of the structure of the breathing hole and the baffle plate of the present invention.

In the figure: 1. a respirator top shell; 2. a suction nozzle; 3. an air inlet nozzle; 4. an emergency assembly; 41. a reserve airbag; 42. an intake valve; 43. an air intake duct; 44. an air inlet nozzle; 5. a respirator bottom shell; 6. an exhalation port; 7. a filter assembly; 71. a limit clamp; 72. a filter sheet; 73. a filter screen; 74. a magnet; 75. a breathing hole; 76. a baffle; 8. an impact assembly; 81. a rail pipe; 82. a striking sleeve; 83. striking a ball; 84. a track groove; 85. striking the rod.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Referring to fig. 1-9, the present invention provides a technical solution for a respiratory function nursing training device:

in the respiratory function nursing training device, in the respiratory process of a patient after medical operation, the existing respiratory training presses a small ball through the patient, air in the ball is extruded into the oral cavity, then enters the lung along the oral cavity, the air is discharged through blowing up the small ball, air is directly sucked in the training process, dust such as pollen in the air can directly enter the oral cavity, the dust enters the lung and the throat to cause lung infection and pharyngeal infection, and especially for the patient with diseases of the lung and respiratory system, inflammation is more easily caused to be extremely unfavorable for the rehabilitation of the patient; the device reduces the probability that the dust enters the lung through filtering the air through the dust of filtration part, reduces the probability of infection, and what is different from prior art in the breathing training in addition is, spit out the air after inhaling the air through the patient, has driven filter plate 72 and filter screen 73 and has carried out reciprocating motion in the inside of respirator top shell 1, has accomplished the breathing exercise in the motion process, can in addition to dyspnea, the oxygen deficiency patient can be timely carries out the air supply that corresponds, can adapt to the action characteristic when human oxygen deficiency more, and is also more timely and convenient in the aspect of the regulation.

For this distinguishing feature, the following detailed description is made:

the breathing device comprises a breathing apparatus top shell 1, a suction nozzle 2 and an air inlet nozzle 3, wherein one side of the breathing apparatus top shell 1 is connected with the suction nozzle 2, the other side of the breathing apparatus top shell 1 is connected with the air inlet nozzle 3, the breathing apparatus top shell 1 and the breathing apparatus bottom shell 5 are mutually buckled, the breathing apparatus top shell 1 and the breathing apparatus bottom shell 5 are buckled and connected through a buckling structure, the left side and the right side of the breathing apparatus bottom shell 5 are also connected with the suction nozzle 2 and the air inlet nozzle 3, the suction nozzle 2 and the air inlet nozzle 3 at the upper end of the breathing apparatus bottom shell 5 are matched with the suction nozzle 2 and the air inlet nozzle 3 at the upper end of the breathing apparatus top shell 1 and the breathing apparatus bottom shell 5, the breathing apparatus top shell 1 and the breathing apparatus bottom shell 5 are connected together through buckles, a cavity is formed inside the breathing apparatus top shell 1 and the breathing apparatus bottom shell 5, and one side of the cavity, which is close to the suction nozzle 2, and a patient can directly contain the breathing apparatus to complete breathing training;

the filter assembly 7 comprises a limit card 71, limit cards 71 are embedded in the respirator top shell 1 and the respirator bottom shell 5, a filter plate 72 is embedded in the respirator top shell 1 and the respirator bottom shell 5, the limit cards 71 and the filter plate 72 are divided into an upper part and a lower part, the upper half parts of the limit cards 71 and the filter plate 72 are in sliding connection with the respirator top shell 1, the lower half parts of the limit cards 71 and the filter plate 72 are in sliding connection with the respirator bottom shell 5, filter screens 73 are wrapped on two sides of the filter plate 72, a magnet 74 is fixedly connected to the bottom ends of the filter screens 73, the limit cards 71 and the upper half parts of the filter plate 72 are connected through the magnet 74, the N pole of the magnet 74 of the lower part corresponds to the S pole of the magnet 74 of the upper half part, three groups of limit cards 71 are arranged, two groups of limit cards 71 correspond to each other, two groups of limit cards 71 close to one side of the filter nozzles 3 correspond to each other, a last group of limit cards 71 are fixedly connected to the inner wall of the filter plate 5, a breathing hole 75 is formed in the inner part of the filter plate 72 close to one side of the filter plate 2, the inner part of the filter plate 72 is wrapped by the filter plate 75, the filter plate 76 is embedded in the filter plate 76 is far away from the right side of the filter plate 76, and the filter plate 76 is embedded in the filter plate 76, and is far away from the opening 76 of the filter plate 76 is far from the left side 2; when a patient breathes and exercises, the suction nozzle 2 is contained in the oral cavity through the patient, in the breathing process, the filter disc 72 and the filter screen 73 are sucked towards one side close to the suction nozzle 2 by inspiration, the filter disc 72 and the filter screen 73 can directly block the exhalation port 6 during the period, at the moment, air is sucked into the respirator top shell 1 through the air inlet nozzle 3 by continuing to breathe, after the air flows into the respirator top shell 1, the air enters the filter disc 72 through the filter screen 73, the first filtering is carried out through the filter disc 72, the rear air enters the breathing hole 75, the air is filtered through the breathing hole 75, so that dust in the air is removed after the air passes through the breathing hole 75, and the throat or lung infection caused by excessive dust sucked by the patient can be avoided;

in addition, the filter screen 73 and the filter sheet 72 form an upper part and a lower part, the upper part and the lower part are connected through the magnet 74, the magnet 74 at the lower end and the magnet 74 at the upper end are in opposite correspondence, the N pole corresponds to the S pole, the opposite poles attract each other, after the filter screen 73 at one side of the upper end is impacted by the impact rod 85, the filter screens 73 are deviated, the magnets 74 are in homopolar contact after the deviation, the filter screens 73 are separated under mutual repulsion, and gaps are formed between the filter screens 73 at the upper end and the lower end after separation and the magnet 74, and are used for introducing external air, so that a patient can conveniently and rapidly absorb air in an anoxic state;

the inside of respirator top shell 1 has embedded filter unit 7, exhalation hole 6 has been seted up to the bottom of respirator top shell 1, one side of filter unit 7 is connected with striking unit 8, striking unit 8 includes track pipe 81, the inside fixedly connected with track pipe 81 of respirator drain pan 5, the upper end cover of track pipe 81 has connect impact cover 82, impact ball 83 has been inlayed to the inside of impact cover 82, track groove 84 has been seted up to the both sides of impact cover 82, the inside of track pipe 81 has still been inlayed impact rod 85, impact ball 83 is inlayed in the inside of track pipe 81 and both ends extend from the inside of track groove 84, sliding connection between impact ball 83 and track groove 84, impact ball 83 is inlayed in the inside of track pipe 81 and impact cover 82, impact ball 83 is solid metal spheroid, one side of impact rod 85 is inlayed in the inside of track pipe 81 and its other end is connected with filter screen 73, in order to let the device adapt to the human body more, when the patient is in use and normal respiratory exercise, the face and the ground of the patient are kept parallel, the patient is in a head-up state or a slightly downward state, at the moment, the striking sleeve 82 is positioned at the forefront end of the track pipe 81 under the action of gravity, namely, is close to one end of the air inlet nozzle 3, the filter plates 72 are mutually attached together under the adsorption of the magnet 74, respiratory training is completed through the movement of the filter plates 72, when the patient is in an anoxic state, the body can promote the patient to breathe at a large mouth, when the patient breathes at a large mouth, the human body can lead the air pipe to be more smooth, the air pipe to be more stretched by lifting up, thus being more beneficial to the entry of air, when the head of the patient is lifted up, the striking sleeve 82 positioned at the upper end of the track pipe 81 slides at the upper end of the track pipe 81 under the action of gravity, and continuously slides towards the lower end, the impact ball 83 is driven to move in the sliding process, when the impact sleeve 82 slides to enable the impact ball 83 to impact the impact rod 85, the impact rod 85 moves, the filter screen 73 is forced to be separated after the impact rod moves, the magnets 74 are in contact with each other in the same polarity in the separation stage, repulsive force is generated, the filter screen 73 is further pushed to be separated by the repulsive force, a large gap is formed between the filter screen 73 and the filter screen 73 after the filter screen 73 is separated, at the moment, a patient breathes air, the air enters the respirator top shell 1 through the air inlet nozzle 3, and then enters the mouth of the patient through the gap until entering the lung, so that a large amount of oxygen is provided for the patient;

when training hypoxia appears to the patient, this hypoxia is not sustainable, and most is intermittent, consequently need not to spit respirator top shell 1 and respirator drain pan 5 in this condition to take place the oral cavity, only need raise one's head and can absorb the air, also brought more convenient for the patient in the use.

The inside of respirator drain pan 5 still includes emergent subassembly 4, emergent subassembly 4 includes air inlet nozzle 44, the internally mounted of respirator drain pan 5 has air inlet nozzle 44, air inlet duct 43 has been inlayed to air inlet nozzle 44's inside, the both sides fixedly connected with of respirator top shell 1 and respirator drain pan 5 reserves gasbag 41, reserve gasbag 41 and air inlet duct 43 are linked together, reserve gasbag 41 is linked together through air inlet duct 43 and air inlet nozzle 44 and the inside of respirator drain pan 5, air inlet valve 42 is still installed to the upper end of reserve gasbag 41, the inside of reserve gasbag 41 is hollow form, and it has the air to fill, wherein air inlet valve 42 can directly link up with medical oxygen, through the manual pressure reserve gasbag 41 of patient after the connection, make reserve gasbag 41 receive the compression, the inside oxygen then can enter into the inside of respirator top shell 1 through air inlet duct 43 and air inlet nozzle 44, the patient is convenient for the absorption of oxygen, also can bring the same exercise effect through the manual pressure reserve gasbag 41 of patient and current push type respirator, but be different from current push type respirator can be through external oxygen for the patient, combine to respirator top shell 1 and respirator 5 for the patient provides the corresponding condition of breathing and also can be adjusted according to the condition of the breathing of the corresponding to the condition of the patient.

The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.

Claims (10)

1. The utility model provides a respiratory function nursing trainer, includes respirator top shell (1), suction nozzle (2) and air inlet nozzle (3), its characterized in that: one side of the respirator top shell (1) is connected with a suction nozzle (2), the other side of the respirator top shell (1) is connected with an air inlet nozzle (3), the bottom end of the respirator top shell (1) is connected with a respirator bottom shell (5), a filter component (7) is embedded in the respirator top shell (1), an exhalation hole (6) is formed in the bottom end of the respirator top shell (1), and one side of the filter component (7) is connected with an impact component (8);

the filter assembly (7) comprises a limit clamp (71), the limit clamp (71) is embedded in the top shell (1) of the respirator and the bottom shell (5) of the respirator, a filter sheet (72) is further embedded in the top shell (1) of the respirator and the bottom shell (5) of the respirator, filter screens (73) are wrapped on two sides of the filter sheet (72), a magnet (74) is fixedly connected with the bottom end of the filter screen (73), a breathing hole (75) is formed in the filter sheet (72), and a baffle sheet (76) is embedded in the breathing hole (75);

the utility model provides an impact subassembly (8) includes track pipe (81), the inside fixedly connected with track pipe (81) of respirator drain pan (5), the upper end cover of track pipe (81) has connect impact cover (82), the inside embedding of impact cover (82) has impact ball (83), track groove (84) have been seted up to the both sides of impact cover (82), the inside of track pipe (81) has still embedded impact pole (85), impact ball (83) embedding is extended from the inside of track groove (84) in its both ends in the inside of track pipe (81), sliding connection between impact ball (83) and track groove (84).

2. A respiratory function care training apparatus as in claim 1 wherein: the novel respirator is characterized in that the respirator top shell (1) and the respirator bottom shell (5) are buckled mutually, the respirator top shell (1) and the respirator bottom shell (5) are buckled through a buckling structure, the left side and the right side of the respirator bottom shell (5) are also connected with the suction nozzle (2) and the air inlet nozzle (3), and the suction nozzle (2) and the air inlet nozzle (3) at the upper end of the respirator bottom shell (5) are matched with the suction nozzle (2) and the air inlet nozzle (3) at the upper end of the respirator top shell (1).

3. A respiratory function care training apparatus as in claim 1 wherein: the limiting clamp (71) and the filter plate (72) are divided into an upper part and a lower part, the upper half parts of the limiting clamp (71) and the filter plate (72) are connected with the top shell (1) of the respirator in a sliding manner, and the lower half parts of the limiting clamp (71) and the filter plate (72) are connected with the bottom shell (5) of the respirator in a sliding manner.

4. A respiratory function care training apparatus as in claim 3 wherein: the limit card (71) is connected with the upper half part and the lower half part of the filter plate (72) through the magnet (74), and the N pole of the magnet (74) of the lower part corresponds to the S pole of the magnet (74) of the upper half part.

5. A respiratory function care training apparatus as in claim 1 wherein: the limiting clamps (71) are provided with three groups, two groups of the three groups of limiting clamps (71) correspond to each other, and two groups of limiting clamps (71) close to one side of the air inlet nozzle (3) correspond to each other.

6. A respiratory function care training apparatus as in claim 5 wherein: the last group of limiting clamps (71) are fixedly connected to the inner wall of the respirator bottom shell (5), and the last group of limiting clamps (71) are close to one side of the suction nozzle (2).

7. A respiratory function care training apparatus as in claim 1 wherein: the filter screen (73) parcel is in the left and right sides of filter plate (72), the separation blade (76) of breathing hole (75) inside embedding sets up to loudspeaker form, the separation blade (76) is close to the one side opening of suction nozzle (2) big, and the separation blade (76) opening of keeping away from suction nozzle (2) one side is little.

8. A respiratory function care training apparatus as in claim 1 wherein: the impact ball (83) is embedded in the track pipe (81) and the impact sleeve (82), the impact ball (83) is a solid metal sphere, one side of the impact rod (85) is embedded in the track pipe (81), and the other end of the impact rod is connected with the filter screen (73).

9. A respiratory function care training apparatus as in claim 1 wherein: the inside of respirator drain pan (5) still includes emergent subassembly (4), emergent subassembly (4) are including inlet nozzle (44), internally mounted of respirator drain pan (5) has inlet nozzle (44), the inside embedding of inlet nozzle (44) has air intake duct (43), both sides fixedly connected with reserve gasbag (41) of respirator top shell (1) and respirator drain pan (5), reserve gasbag (41) are linked together with air intake duct (43).

10. A respiratory function care training apparatus as in claim 9 wherein: the reserve air bag (41) is communicated with the inside of the respirator bottom shell (5) through an air inlet conduit (43) and an air inlet nozzle (44), an air inlet valve (42) is further arranged at the upper end of the reserve air bag (41), and the inside of the reserve air bag (41) is hollow and filled with air.

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