An adjustable wearable vaginal dilation device

By designing a wearable vaginal expansion device with multiple independent airbags and inflatable interlayers, combined with liquid-absorbing cotton and inflation control components, the problems of improper regulation and contamination of the medicine in the prior art are solved, and the fine expansion and thorough flushing of the vagina are achieved , improves treatment experience and safety.

CN118845176BActive Publication Date: 2024-12-17TONGJI HOSPITAL ATTACHED TO TONGJI MEDICAL COLLEGE HUAZHONG SCI TECH
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Patent Information

Application Number
CN202411254536.6
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-09-09
Publication Date
2024-12-17
Estimated Expiration
2044-09-09

AI Technical Summary

Technical Problem

The existing wearable vaginal expansion devices cannot be targeted local expansion according to patients of different ages and body types. The regulation range is not fine enough, and it needs to be frequently removed and flushed with the medicine solution increases the difficulty and pain of treatment, and the difficulty of inflating control is high.

Method used

An adjustable wearable vaginal expansion device including an outer expansion expansion assembly, an inner inflation assembly, a flow guide mechanism and an inflation control assembly is designed. The fine control is achieved through multiple independent airbags and an inflatable interlayer. The inner inflation assembly is equipped with Flushing channels and liquid-absorbing cotton, the inflation control assembly includes a control panel and a microcontroller for safe and convenient operation.

Benefits of technology

It achieves fine expansion of different areas of the vagina, reduces the discomfort in treatment, avoids contamination of the medicine liquid, ensures thorough flushing, and improves the treatment experience and safety.

✦ Generated by Eureka AI based on patent content.

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Abstract

The present invention provides an adjustable wearable vaginal dilation device, which relates to the technical field of medical devices, including an outer expansion component, an inner inflation component, a flow guide mechanism and an inflation control component, wherein the outer expansion component includes a plurality of independent air bags, the inner inflation component passes through the interior of the independent air bags, and the bottom of the inner inflation component is sleeved with a bottom baffle, the side of the bottom baffle is attached with an elastic band, the end of the elastic band is connected with an adhesive sheet, and the top of the outer expansion component is installed with a flow guide mechanism. The expansion device can provide different degrees of expansion to different areas of the vagina, and can also prevent menstrual blood from dripping directly onto clothes and causing contamination during use during menstruation. In addition, the interior can be flushed, and the flushing channel can also be used to drain the internal medicine, which is convenient for drug treatment and does not need to be frequently removed and worn, further optimizing the treatment experience and having higher safety.
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Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to an adjustable wearable vaginal dilation device. Background Art

[0002] Congenital vaginal atresia occurs at a young age, and is often seen after menarche (11-15 years old) when menstrual blood outflow obstruction causes lower abdominal pain and medical treatment. Wearable vaginal dilation devices can be used for vaginal dilation after vaginal reconstruction for congenital vaginal atresia. By using vaginal dilator equipment for continuous dilation treatment, combined with drug-assisted treatment, the purpose of providing congenital vaginal atresia patients with gradual vaginal dilation treatment as they age can be achieved.

[0003] In the prior art, wearable therapeutic devices used for vaginal dilation can achieve the purpose of dilation by directly inserting a columnar device directly into the vagina. If a control function is required, the expansion degree and state can be adjusted by directly filling an inflatable elastic airbag with gas and controlling the size of the airbag expansion. However, the adjustment in the existing solution will directly drive the entire dilation device to be synchronously and evenly regulated, which makes it impossible to perform targeted local dilation treatment according to patients of different ages and body shapes. The control range is not fine enough. On the other hand, due to the need to cooperate with auxiliary medication, the liquid medicine will need to be flushed during the subsequent wearable treatment process, which leads to the need to remove it frequently, increasing the difficulty of treatment and aggravating the pain of the patient during the treatment stage. At the same time, the difficulty of controlling the inflation is also high during inflation. Summary of the invention

[0004] In view of the shortcomings of the prior art, the purpose of the present invention is to provide an adjustable wearable vaginal dilation device to solve the problems raised in the above-mentioned background technology. The present invention can achieve gradual dilation treatment in a small range, further reducing the discomfort during the treatment process, avoiding direct dripping onto clothes and causing contamination, and can flush the interior, which is safer and easier to operate.

[0005] In order to achieve the above-mentioned purpose, the present invention is implemented through the following technical scheme: an adjustable wearable vaginal dilation device, comprising an dilation device body, the dilation device body comprising an outer expansion component, an inner inflatable component, a guide mechanism and an inflation control component, the outer expansion component comprising a plurality of independent air bags, the inner inflatable component passing through the interior of the independent air bags, and the bottom of the inner inflatable component is sleeved with a bottom baffle, the side of the bottom baffle is attached with an elastic band, the end of the elastic band is connected with an adhesive sheet, the top of the outer expansion component is installed with a guide mechanism, the interior of the guide mechanism is filled with absorbent cotton, a top flushing hole is opened in the middle of the guide mechanism, and the central axis of the inner inflatable component coincides with the central axis of the top flushing hole, the bottom end of the inner inflatable component is inserted with an inflation tube, and the end of the inflation tube is connected to the inflation control component.

[0006] Furthermore, the inner inflation component includes a middle sleeve and an inner sleeve, and an inflation interlayer is provided between the middle sleeve and the inner sleeve, an inflation hole is provided at the top of the side of the middle sleeve, a flushing channel is provided inside the inner sleeve, and a docking hole is provided at the top of the flushing channel.

[0007] Furthermore, the inflation holes are evenly distributed in a ring shape on the surface of the middle casing, the inflation interlayer is connected with the interior of the outer expansion component through the inflation holes, and a plug-in shell is embedded in the bottom of the inner casing.

[0008] Furthermore, a bottom flushing hole is provided at the bottom of the plug-in shell, a connecting hole is provided at the bottom of the inflatable interlayer, an air valve is installed at the bottom of the connecting hole, one end of the inflatable tube is connected to the inside of the air valve, and an air pipe joint is installed on the surface of the inflatable tube.

[0009] Furthermore, the outer layer expansion and expansion component includes an independent airbag and an outer layer sleeve. The inner side of each independent airbag is attached to the surface of the outer layer sleeve. The outer layer sleeve is provided with an air inlet hole, and each independent airbag is connected to the interior of the inflatable interlayer through the air inlet hole and the inflation hole in turn.

[0010] Furthermore, the inner wall of the outer sleeve is fitted with the surface of the middle sleeve, the thickness of each of the independent airbags is the same, and adjacent independent airbags are squeezed and fitted with each other.

[0011] Furthermore, the guide mechanism includes an arc-shaped top and absorbent cotton, the bottom of the arc-shaped top is integrally formed with a vertical pole, the surface of the vertical pole is sleeved with an extrusion plate, and the top of the absorbent cotton is bonded to the bottom of the arc-shaped top as a whole.

[0012] Furthermore, the bottom of the absorbent cotton is bonded to the surface of the extrusion plate as a whole, a top flushing hole is opened in the middle of the arc-shaped top, and a drainage cavity is opened between the topmost independent air bag and the arc-shaped top.

[0013] Furthermore, the extrusion plate moves up and down inside the drainage cavity, the bottom end of the vertical rod is bonded to the surface of the topmost independent airbag, and the inner layer inflatable component moves up to push the extrusion plate upward.

[0014] Furthermore, the inflation control component includes a control panel and an air pump. One end of the inflation tube is connected to an electrical proportional valve, which is connected to the air pump through a pipeline. An emergency stop switch and a microcontroller are installed on the surface of the inflation control component. The microcontroller is electrically connected to the control panel through a cable. A battery is also installed inside the inflation control component.

[0015] Beneficial effects of the present invention:

[0016] 1. The adjustable wearable vaginal dilation device can provide different degrees of dilation to different areas of the vagina, and can also achieve gradual dilation treatment in a small area, further reducing the discomfort during the treatment process.

[0017] 2. The adjustable wearable vaginal dilation device absorbs the liquid medicine or menstrual blood through the absorbent cotton at the end to avoid direct dripping onto clothes and causing contamination, thereby improving the wearing experience. At the same time, it will not block the flushing liquid during the flushing stage, ensuring that the flushing liquid can be smoothly discharged from the body during the flushing process, taking into account the effects of adsorption and diversion.

[0018] 3. The adjustable wearable vaginal dilation device can flush the inside more thoroughly, and the flushing channel can also be used to drain the internal medicine, which is convenient for drug treatment. It does not need to be frequently removed and worn, further optimizing the treatment experience.

[0019] 4. The invention can set the suction and exhaust speed by using the speed increase and deceleration buttons on the control panel before the machine is running. In case of emergency, the user can cut off the entire circuit by the emergency stop switch to achieve emergency braking, which is safer and convenient to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of the structure of an adjustable wearable vaginal dilation device of the present invention;

[0021] Figure 2 is an internal cross-sectional view of the present invention;

[0022] Figure 3 for Figure 2 A magnified image of area A;

[0023] Figure 4It is a structural schematic diagram of the inner layer inflatable component part of the present invention;

[0024] Figure 5 for Figure 2 Enlarged view of area B;

[0025] Figure 6 It is a schematic diagram of the intelligent control device part of the vaginal dilation device of the present invention;

[0026] In the figure: 1. outer expansion component; 2. inner inflation component; 3. diversion mechanism; 4. top flushing hole; 5. arc top; 6. vertical pole; 7. extrusion plate; 8. absorbent cotton; 9. drainage cavity; 10. outer sleeve; 11. air inlet; 12. inner sleeve; 13. middle sleeve; 14. independent air bag; 15. inflatable interlayer; 16. flushing channel; 17. inflation hole; 18. docking hole; 19. bottom baffle; 20. elastic band; 21. adhesive sheet; 22. plug-in shell; 23. inflation tube; 24. air valve; 25. bottom flushing hole; 26. connecting hole; 27. battery; 28. air pump; 29. ​​electric proportional valve; 30. microcontroller; 31. emergency stop switch; 32. cable; 33. control panel; 34. air pipe joint. DETAILED DESCRIPTION

[0027] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0028] See also Figures 1 to 6 The present invention provides the following technical solutions: an adjustable wearable vaginal dilation device, comprising an expansion device body, the expansion device body comprising an outer expansion component 1, an inner inflatable component 2, a guide mechanism 3 and an inflation control component, the outer expansion component 1 comprising a plurality of independent air bags 14, the inner inflatable component 2 passing through the inside of the independent air bags 14, and the bottom of the inner inflatable component 2 is sleeved with a bottom baffle 19, the side of the bottom baffle 19 is attached with an elastic band 20, the end of the elastic band 20 is connected with an adhesive sheet 21, the top of the outer expansion component 1 is installed with a guide mechanism 3, the inside of the guide mechanism 3 is filled with absorbent cotton 8, a top flushing hole 4 is opened in the middle of the guide mechanism 3, and the central axis of the inner inflatable component 2 coincides with the central axis of the top flushing hole 4, the bottom end of the inner inflatable component 2 is inserted with an inflation tube 23, and the end of the inflation tube 23 is connected to the inflation control component. The adjustable wearable vaginal dilation device is used to treat congenital vaginal atresia. It can be flushed and medicated at any time during treatment, and can also be used during menstruation. In this embodiment, the diameter of the outer expansion component 1 is less than 2CM, and the diameter of the middle flushing channel 16 is less than 1CM.

[0029] When the present invention is used, firstly only the outer layer expansion component 1 is inserted into the patient's vagina, and then the inner layer inflatable component 2 is inserted upward from the bottom of the outer layer expansion component 1, and in the process of insertion, each independent air bag 14 on the outer layer expansion component 1 is connected in turn, and when connected, the independent air bag 14 can be inflated by the external inflation control component to make it expand, and finally when the required width is reached, it can be stopped, and the inner layer inflatable component 2 is continuously controlled to move upward to inflate the subsequent independent air bags 14, until the independent air bags 14 at different positions are inflated to the required diameter in turn, and this state can be maintained. Then, the adhesive sheet 21 at the bottom is adhered to the bottom surface of the underwear, or the inner area of ​​the pants for fixing. When it is necessary to flush the inside of the vagina during wearing, first continue to push the inner inflatable component 2 upward, then inject the external flushing solution from the bottom flushing hole 25 of the inner inflatable component 2, and spray it out from the top flushing hole 4. After the flushing is completed, wait for the flushing solution to be completely discharged, and then pull the inner inflatable component 2 down to make it flush with the top of the outer expansion component 1.

[0030] In this embodiment, the inner layer inflatable component 2 includes a middle layer casing 13 and an inner layer casing 12, and an inflatable interlayer 15 is provided between the middle layer casing 13 and the inner layer casing 12, an inflatable hole 17 is provided on the side top of the middle layer casing 13, a flushing channel 16 is provided inside the inner layer casing 12, and a docking hole 18 is provided on the top of the flushing channel 16. The inflatable holes 17 are evenly distributed on the surface of the middle layer casing 13 in an annular shape, and the inflatable interlayer 15 is connected to the inside of the outer layer expansion component 1 through the inflatable holes 17, and a plug-in shell 22 is embedded at the bottom of the inner layer casing 12. A bottom flushing hole 25 is provided at the bottom of the plug-in shell 22, a connecting hole 26 is provided at the bottom of the inflatable interlayer 15, an air valve 24 is installed at the bottom of the connecting hole 26, one end of the inflatable tube 23 is connected to the inside of the air valve 24, and a trachea joint 34 is installed on the surface of the inflatable tube 23. The interior can be flushed more thoroughly, and the flushing channel 16 can also be used to drain the internal medicine, which is convenient for drug treatment and does not require frequent removal and wearing, further optimizing the treatment experience.

[0031] Specifically, a plurality of separate independent airbags 14 are used, and the middle of each independent airbag 14 is connected as a whole through the outer sleeve 10, and then the middle sleeve 13 and the inner sleeve 12 are lifted and lowered along the inner side of the outer sleeve 10, and the air inlet holes 17 on the middle sleeve 13 are used to connect with the corresponding air inlet holes 11 on the inner side of each independent airbag 14 in sequence, and then the air inlet tube 23 is used from the outside at this position. After the air pump 28 is used to fill the airflow, only the independent airbag 14 can be expanded. Through this process, the specific size of the expansion of the independent airbag 14 at different depths can be accurately controlled, so that different areas of the vagina can be expanded to different degrees, and a small range of gradual expansion treatment can also be achieved, further reducing the discomfort during the treatment process.

[0032] In this embodiment, the outer layer expansion and expansion component 1 includes an independent airbag 14 and an outer layer sleeve 10. The inner side of each independent airbag 14 is attached to the surface of the outer layer sleeve 10. The outer layer sleeve 10 is provided with an air inlet hole 11, and each independent airbag 14 is connected to the inside of the inflatable interlayer 15 through the air inlet hole 11 and the inflation hole 17 in sequence. The inner wall of the outer layer sleeve 10 is in contact with the surface of the middle layer sleeve 13. The thickness of each independent airbag 14 is the same, and adjacent independent airbags 14 are pressed and fitted with each other. It can provide different degrees of expansion to different areas of the vagina, and can also achieve small-scale gradual expansion treatment, further reducing the discomfort during the treatment process.

[0033] When the device needs to be taken out later, the inner layer inflation component 2 is directly pulled down slowly, and the inflation hole 17 can be docked with each air inlet hole 11 in turn. At this time, the inflation tube 23 is in a disconnected state. Therefore, after the inflation hole 17 completes the docking with the air inlet hole 11 on the independent airbag 14, the air inside the independent airbag 14 can be quickly discharged, so that the independent airbag 14 can be contracted and reset.

[0034] In this embodiment, the diversion mechanism 3 includes an arc-shaped top 5 and a liquid-absorbing cotton 8. The bottom of the arc-shaped top 5 is integrally formed with a vertical rod 6. The surface of the vertical rod 6 is sleeved with an extrusion plate 7. The top of the liquid-absorbing cotton 8 is bonded to the bottom of the arc-shaped top 5 as a whole. The bottom of the liquid-absorbing cotton 8 is bonded to the surface of the extrusion plate 7 as a whole. The middle of the arc-shaped top 5 is provided with a top flushing hole 4. A drainage cavity 9 is provided between the top independent air bag 14 and the arc-shaped top 5. The extrusion plate 7 moves up and down inside the drainage cavity 9. The bottom end of the vertical rod 6 is bonded to the surface of the top independent air bag 14. The inner layer inflatable component 2 moves upward to push the extrusion plate 7 upward. The liquid medicine or menstrual blood is adsorbed by the liquid-absorbing cotton 8 at the end to avoid direct dripping onto the clothes to cause pollution, thereby improving the wearing experience. At the same time, the flushing liquid will not be blocked during the flushing stage, ensuring that the flushing liquid can be discharged from the body smoothly during the flushing process, taking into account the effects of adsorption and diversion.

[0035] Specifically, a liquid-absorbing cotton 8 is arranged at the top, and a flushing channel 16 is arranged inside the inner sleeve 12, as well as a docking hole 18 at the top of the flushing channel 16. Through this structure, during the wearing treatment process, flushing and cleaning can be performed from the bottom flushing hole 25, and the flushed medicine enters the arc-shaped top 5 from the docking hole 18, and is finally injected upward from the top flushing hole 4. At this time, due to the upward movement of the inner inflatable component 2, the extrusion plate 7 is lifted upward, so that the liquid-absorbing cotton 8 is compressed, thereby causing the bottom of the drainage cavity 9 to open, and the topmost independent air bag 14 will block the bottom channel, so that the flushed medicine will eventually flow from the drainage cavity 9 into the inside of the inflation hole 17, and finally flow into the bottom connecting hole 26 along the inflation interlayer 15, and finally be discharged to the outside.

[0036] During other time periods, the liquid medicine inside the vagina will be absorbed by the top absorbent cotton 8, and will be drained downward along the flushing channel 16 after being oversaturated, thereby preventing the liquid medicine inside from directly adhering to clothing. In addition, when wearing the device during menstruation, the top absorbent cotton 8 can be taken out and filled into the inside of the plug-in housing 22, so that the menstrual blood can flow into the bottom absorbent cotton 8 along the middle flushing channel 16, thereby preventing the blood from directly dripping onto clothing and causing contamination, and the device can be replaced at any time.

[0037] In this embodiment, the inflation control assembly includes a control panel 33 and an air pump 28. One end of the inflation tube 23 is connected to an electrical proportional valve 29, which is connected to the air pump 28 through a pipeline. An emergency stop switch 31 and a microcontroller 30 are installed on the surface of the inflation control assembly. The microcontroller 30 is electrically connected to the control panel 33 through a cable 32. A battery 27 is also installed inside the inflation control assembly. The speed of suction and deflation is set before the machine is operated through the speed increase and speed decrease buttons on the control panel 33. In case of an emergency, the user can cut off the entire circuit through the emergency stop switch 31 to achieve emergency braking, which is safer and easier to operate.

[0038] Specifically, the expansion device is directly connected to the external intelligent inflation control component. When inflating, the pump works, and the inner inflation component is manually controlled to dock with the independent airbags 14 at different positions. In this process, the trachea, the electrical proportional valve 29, and the trachea are used to reach different independent airbags 14; when deflated, the inner inflation component is manually pulled downward, and the electrical proportional valve 29 has its own pressure relief valve, which releases the gas in each independent airbag 14 in turn through the trachea and the pressure relief valve of the electrical proportional valve 29.

[0039] Connection and disassembly between the inflation control assembly and the expansion device: When connecting, the ventilation valve 24 is initially in a closed state, the trachea of ​​the expansion device is connected to the trachea connector 34, and the ventilation valve 24 is opened to achieve communication between the inflation control assembly and the expansion device; when disassembling, first close the ventilation valve 24, and then remove the trachea of ​​the expansion device from the trachea connector 34 to achieve separation of the expansion device and the inflation control assembly.

[0040] The basic principles and main features of the present invention and the advantages of the present invention are shown and described above. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention.

[0041] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An adjustable wearable vaginal dilation device, comprising a dilation device body, characterized in that: The expansion device body comprises an outer expansion component (1), an inner inflation component (2), a flow guiding mechanism (3) and an inflation control component. The outer expansion component (1) comprises a plurality of independent air bags (14). The inner inflation component (2) passes through the interior of the independent air bags (14). A bottom baffle (19) is sleeved on the bottom of the inner inflation component (2). An elastic band (20) is attached to the side of the bottom baffle (19). An adhesive sheet (21) is connected to the end of the elastic band (20). The flow guiding mechanism (3) is installed on the top of the outer expansion component (1). The interior of the flow guiding mechanism (3) is filled with The invention relates to a liquid-absorbing cotton (8), wherein a top flushing hole (4) is provided in the middle of the flow-guiding mechanism (3), and the central axis of the inner-layer inflatable component (2) coincides with the central axis of the top flushing hole (4), an inflatable tube (23) is inserted at the bottom end of the inner-layer inflatable component (2), and the end of the inflatable tube (23) is connected to the inflatable control component, the inner-layer inflatable component (2) comprises a middle-layer sleeve (13) and an inner-layer sleeve (12), and an inflatable interlayer (15) is provided between the middle-layer sleeve (13) and the inner-layer sleeve (12), an inflatable hole (17) is provided at the top of the side of the middle-layer sleeve (13), and the inner-layer sleeve (12) is provided with a gas injection hole (17). The outer layer expansion and expansion component (1) comprises an independent air bag (14) and an outer layer sleeve (10), the inner side of each independent air bag (14) is attached to the surface of the outer layer sleeve (10), the outer layer sleeve (10) is provided with an air inlet hole (11), and each independent air bag (14) is connected to the inside of the inflatable interlayer (15) through the air inlet hole (11) and the inflation hole (17) in sequence, the flow guiding mechanism (3) comprises an arc-shaped top (5) and a liquid absorbing cotton (8), the bottom of the arc-shaped top (5) is integrally formed with A vertical pole (6), the surface of the vertical pole (6) is sleeved with an extrusion plate (7), the top end of the liquid-absorbing cotton (8) is bonded to the bottom of the arc-shaped top (5) as a whole, the bottom of the liquid-absorbing cotton (8) is bonded to the surface of the extrusion plate (7) as a whole, a top flushing hole (4) is provided in the middle of the arc-shaped top (5), a drainage cavity (9) is provided between the top independent air bag (14) and the arc-shaped top (5), the extrusion plate (7) moves up and down inside the drainage cavity (9), the bottom end of the vertical pole (6) is bonded to the surface of the top independent air bag (14), and the inner layer inflatable component (2) pushes the extrusion plate (7) upward after moving upward.

2. The adjustable wearable vaginal dilation device according to claim 1, characterized in that: The inflation holes (17) are evenly distributed in an annular shape on the surface of the middle layer casing (13); the inflation interlayer (15) is connected to the interior of the outer layer expansion and expansion component (1) through the inflation holes (17); and a plug-in sleeve (22) is embedded in the bottom of the inner layer casing (12).

3. The adjustable wearable vaginal dilation device according to claim 2, characterized in that: A bottom flushing hole (25) is provided at the bottom of the plug-in sleeve (22), a connecting hole (26) is provided at the bottom of the inflatable interlayer (15), an air valve (24) is installed at the bottom of the connecting hole (26), one end of the inflatable tube (23) is connected to the inside of the air valve (24), and an air pipe joint (34) is installed on the surface of the inflatable tube (23).

4. The adjustable wearable vaginal dilation device according to claim 1, characterized in that: The inner wall of the outer sleeve (10) is fitted with the surface of the middle sleeve (13), the thickness of each independent airbag (14) is the same, and adjacent independent airbags (14) are pressed and fitted with each other.

5. The adjustable wearable vaginal dilation device according to claim 1, characterized in that: The inflation control component comprises a control panel (33) and an air pump (28); one end of the inflation tube (23) is connected to an electrical proportional valve (29); the electrical proportional valve (29) is connected to the air pump (28) via a pipeline; an emergency stop switch (31) and a microcontroller (30) are mounted on the surface of the inflation control component; the microcontroller (30) is electrically connected to the control panel (33) via a cable (32); and a battery (27) is also mounted inside the inflation control component.