A multifunctional negative pressure fixation device

Abstract

The present invention belongs to the technical field of first aid auxiliary equipment, and discloses a multifunctional negative pressure fixing device, which includes a support frame and a sealing airbag. A sealing plate is covered on the support frame, a sliding hole is formed in the sealing plate, a push handle is arranged in the sliding hole, a baffle is arranged on the push handle, an air inlet pipe is penetrated through the push handle, an extrusion airbag located in the support frame is communicated with the air inlet pipe, the extrusion airbag is slidably connected with the sealing plate, a second hose is connected between the extrusion airbag and the sealing airbag, a first hose is communicated with the air inlet pipe, an air inlet adjusting mechanism is arranged on the first hose, and the air inlet adjusting mechanism is used to supply air to or suck air from the first hose. A pipeline switching mechanism is also arranged on the push handle. The present invention solves the problems that the existing pre-hospital first aid technologies and means cannot solve the mediastinal swing caused by flail chest, which prompts hemodynamic instability, and the lung tissue collapse caused by open hemothorax / pneumothorax, and can simultaneously realize the functions of positive pressure fixation and negative pressure drainage.

Description

Technical Field

[0001] The present invention relates to the technical field of first aid auxiliary devices, and particularly to a multifunctional negative pressure fixation device. Background Art

[0002] Traumas caused by earthquake disasters, car accidents, gunshot wounds, etc. seriously threaten human life safety. However, existing pre-hospital first aid techniques and means have significant deficiencies, especially the mediastinal flutter caused by flail chest leading to hemodynamic instability, long-term cerebral hypoxia and disability caused by open pneumothorax, and the inconvenience of carrying first aid supplies for on-site first aid. There is an urgent need for a new, convenient, effective and easy-to-popularize treatment method to be applied to pre-hospital first aid for traumas, providing support for saving patients' lives and reducing the disability rate. Summary of the Invention

[0003] The present invention aims to provide a multifunctional negative pressure fixation device to solve the problem that existing pre-hospital first aid techniques and means cannot solve the mediastinal flutter caused by flail chest leading to hemodynamic instability.

[0004] To achieve the above object, the present invention provides the following technical solution:

[0005] A multifunctional negative pressure fixation device includes a support frame and a sealing airbag provided on one side of the support frame. Straps are provided at the four corners of the support frame. A sealing plate is covered on the side of the support frame away from the sealing airbag. The sealing plate is provided with sliding holes arranged at intervals in an array. A push handle is provided in each sliding hole. A baffle that is slidably and sealingly connected to the sliding hole is covered on the push handle. The baffle always seals the sliding hole when moving. An air inlet pipe is penetrated through the push handle. The air inlet pipe is communicated with an extrusion airbag located inside the support frame. The extrusion airbag is slidably connected to the sealing plate. A second hose is connected between the extrusion airbag and the sealing airbag. All the air inlet pipes are commonly communicated with a first hose fixedly provided on the sealing plate. An air inlet adjustment mechanism is provided on the first hose outside the support frame. The air inlet adjustment mechanism is used to supply air to or suck air from the first hose. A pipeline switching mechanism is further provided on the push handle. The pipeline switching mechanism is used to connect the first hose with the air inlet pipe or connect the first hose with the internal space enclosed by the support frame.

[0006] Preferably, a guiding box communicated with the air inlet pipe is covered outside the extrusion airbag. An opening is provided at the rear side of the guiding box. The guiding box is slidably connected to the sealing plate.

[0007] Through the above setting, the guiding box is used to limit the expansion path of the extrusion airbag, which is beneficial to improving the working efficiency and stability of the present solution.

[0008] Preferably, the intake air regulating mechanism includes a Y-shaped connecting pipe, an air inflation pump, and a vacuum pump. The single-pipe end of the connecting pipe is communicated with the first hose, and the air inflation pump and the vacuum pump are respectively connected to the double-pipe ends of the connecting pipe.

[0009] With the above arrangement, the present solution can improve the efficiency of air inflation and air extraction by means of the air inflation pump and the vacuum pump.

[0010] Preferably, the intake air regulating mechanism includes a pressing balloon and first air pipes communicated on both sides of the pressing balloon. A rotating plate is rotationally and sealingly connected in each first air pipe. A first stopper that abuts against the bottom of the rotating plate is provided on one side of each first air pipe away from the free end of the rotating plate. A second air pipe is rotatably connected to each first air pipe. A second stopper opposite to the first stopper is provided on the second air pipe. The second stopper abuts against the top of the rotating plate. The second air pipe located on the upper side is communicated with the first hose.

[0011] With the above arrangement, by rotating the two second air pipes relative to the first air pipes, the two sealing plates are simultaneously located below the first stopper or above the second stopper, thereby realizing the regulation of inflation or suction of the first hose, enabling the present solution to quickly inflate the sealing airbag to maintain the sealed environment in the support frame, and at the same time, enabling inflation of the corresponding squeezing airbag to generate a positive squeezing force.

[0012] Preferably, magnets are symmetrically embedded in the first air pipes, and iron blocks are embedded at one end of the second air pipes close to the rotation points of the rotating plates.

[0013] With the above arrangement, the working states of inflation and suction after switching in the present solution can be relatively stable.

[0014] Preferably, the lengths of the first stopper and the second stopper are both smaller than the distance between the rotation point on the rotating plate and the side wall closest to the rotation point.

[0015] With the above arrangement, the rotating plate can maintain an opening angle of 90° when rotating, thereby avoiding the problem that the working efficiency of the present solution is affected due to too small an opening angle of the rotating plate.

[0016] Preferably, the pipeline switching mechanism includes a first ventilation passage opened in the push handle, a slideway opened in the intake pipe, a bracket arranged at the bottom of the intake pipe, and sliding plates symmetrically arranged on both sides of the push handle. The first ventilation passage is L-shaped, the first ventilation passage is communicated with the first hose, and the bottom of the first ventilation passage is also communicated with a conical clamping groove arranged in the push handle. The slideway is provided with a first spring abutting against the push handle. A conical protrusion with its top located in the slideway is integrally formed on the bracket. The protrusion is located on the movement track of the clamping groove and is matched with the clamping groove. A second ventilation passage penetrates through the protrusion, and the second ventilation passage is coaxially arranged with one side of the first ventilation passage; the two sliding plates and the push handle are jointly rotatably and sealingly connected in the intake pipe.

[0017] With the above settings, by rotating the push plate, the sliding plate can be used to open the passage of the intake pipe, so that the intake pipe and the sealing airbag can be inflated, thereby realizing the sealing of the area to be fixed; when the sliding plate and the push handle seal the intake pipe, by pressing down the push handle, the clamping groove of the push handle can be engaged with the protrusion, and the first ventilation passage and the second ventilation passage are used to connect the first hose with the internal space of the support frame, facilitating the direct air extraction operation of the sealed space inside the support frame.

[0018] Preferably, a third stopper abuts against the left side of any one of the sliding plates, and a fourth stopper abuts against the right side of the other sliding plate. The third stopper and the fourth stopper are both fixedly arranged in the intake pipe.

[0019] With the above settings, it is convenient for the operator to quickly rotate the push plate, and the intake pipe can be clearly and quickly sealed during the reset process, improving the efficiency of pipeline switching.

[0020] Preferably, a drainage tube is communicated with all the second ventilation passages.

[0021] With the above settings, the free end of the drainage tube can be fixed at the wound for directional and rapid drainage, enhancing the application scope of this solution.

[0022] Preferably, a pain reliever layer and a brace layer are sequentially arranged from bottom to top in the support frame, and the brace layer abuts against the extrusion airbag.

[0023] With the above settings, the pain reliever layer can be used to relieve the pain of the patient, and the brace layer and the extrusion airbag are used to shape the part of the patient that needs to be fixed.

[0024] The beneficial effects of the present invention:

[0025] 1. This solution is applicable to patients with multiple rib fractures (i.e., flail chest), open pneumothorax, rib fractures, and limb fractures. It has a wide application range and is easy to operate, which is beneficial to improving the success rate during first aid;

[0026] 2. This solution can seal the internal space of the support frame with the help of straps and a sealing airbag, and can fix the injured part of the patient by squeezing the airbag, so as to control the mediastinal swing of patients with chest trauma flail chest. At the same time, it can also closely adhere to the ribs with the help of the negative pressure in the support frame, ultimately improving hemodynamic problems, preventing patient hypoxia, and providing the survival rate of patients with severe chest trauma.

[0027] 3. This solution can drain the negative pressure generated in the support frame through a drainage tube, so as to drain the gas in the chest cavity of patients with open pneumothorax, or drain the liquid in the chest cavity of patients with hemopneumothorax, realizing the rapid and effective treatment of these two types of patients and improving the survival rate. Description of the Drawings

[0028] Figure 1 It is the front view of a multifunctional negative pressure fixation device in Embodiment 1;

[0029] Figure 2 It is Figure 1 The partial enlarged view at A in

[0030] Figure 3 It is the front view of a multifunctional negative pressure fixation device (excluding the sealing plate) in Embodiment 1;

[0031] Figure 4 It is the structural schematic diagram of the push handle in Embodiment 1;

[0032] Figure 5 It is Figure 4 The cross-sectional view along B-B in

[0033] Figure 6 It is Figure 4 The cross-sectional view along C-C in

[0034] Figure 7 It is the front view of a multifunctional negative pressure fixation device in Embodiment 2. Detailed Implementation Modes

[0035] The present invention will be further described in detail below in conjunction with the drawings and embodiments:

[0036] The reference numerals in the accompanying drawings of the specification include: support frame 1, strap 2, sealing plate 3, sliding hole 4, push handle 5, baffle 6, air inlet pipe 7, guide box 8, second hose 9, third hose 10, first hose 11, pressure gauge 12, pressing balloon 13, first ventilation pipe 14, fixing block 15, rotating plate 16, first stop block 17, second ventilation pipe 18, second stop block 19, first ventilation passage 20, slideway 21, bracket 22, sliding plate 23, card slot 24, first spring 25, protrusion 26, second ventilation passage 27, fourth hose 28, chute 29, second spring 30, third stop block 31, fourth stop block 32, connecting pipe 33, air pump 34, vacuum pump 35.

[0037] Embodiment 1

[0038] As Figures 1-6 shown, a multifunctional negative pressure fixing device includes a support frame 1 and a sealing airbag adhered to the rear edge of the support frame 1. Four corners on the left and right sides of the support frame 1 are respectively adhered with straps 2, and the device can be fixed on a stretcher, a hospital bed or a patient through the straps 2, so as to keep the relative position between the device and the patient's body unchanged. A sealing plate 3 is covered on the front side of the support frame 1, and sliding holes 4 arranged at intervals in an array are formed in the middle of the sealing plate 3. The number of the sliding holes 4 does not exceed the number of human ribs, and the distribution range of the sliding holes 4 can completely cover the rib range of most human bodies. A push handle 5 is slidably connected in each sliding hole 4. The free end of the push handle 5 is located outside the sealing plate 3. A baffle 6 which is slidably and sealingly connected with the sliding hole 4 is covered on the push handle 5. The baffle 6 is located inside the support frame 1, and the baffle 6 can always seal the sliding hole 4 during movement. An air inlet pipe 7 is arranged on each push handle 5. The air inlet pipe 7 is communicated with a guide box 8 which is slidably connected with the sealing plate 3. An embedding groove matched with the air inlet pipe 7 is formed in the guide box 8. An opening is arranged at the rear side of the guide box 8. An extrusion airbag communicated with the air inlet pipe 7 above is arranged in the guide box 8. The front side of the extrusion airbag is adhered to the front side wall inside the guide box 8, so that the extrusion airbag can move towards the opening of the guide box 8 by means of the guide box 8. A second hose 9 passing through the guide box 8 is communicated between each extrusion airbag and the corresponding side wall of the sealing airbag. The other end of each air inlet pipe 7 is communicated with a third hose 10. All the third hoses 10 are jointly communicated with a first hose 11 fixedly arranged at the rear side of the sealing plate 3. The first hose 11 and the third hose 10 are arranged perpendicular to each other. An air inlet adjusting mechanism located outside the support frame 1 is arranged on the first hose 11. The air inlet adjusting mechanism is used for sending air into the first hose 11 or sucking air from the first hose 11. A pipeline switching mechanism is further arranged on the push handle 5. The pipeline switching mechanism is used for communicating the first hose 11 with the air inlet pipe 7 or communicating the first hose 11 with the internal space enclosed by the support frame 1. A pressure gauge 12 is installed on the sealing airbag, and the internal pressure of the sealing airbag can be monitored in real time by means of the pressure gauge 12.

[0039] The intake air regulating mechanism includes a pressing balloon 13 and a first air pipe 14 communicating with the upper and lower sides of the pressing balloon 13. Fixed blocks 15 are provided on the left side walls of each first air pipe 14. Grooves are formed in the fixed blocks 15, and a rotating plate 16 is rotatably and sealingly connected in the grooves. A rotating shaft passes through the rotating plate 16 and is rotatably connected in the grooves. A torsion spring is embedded between the rotating shaft and the side wall of the groove. A first stop block 17 is provided on the right side of the first air pipe 14 and abuts against the bottom of the rotating plate 16. A second air pipe 18 is rotatably connected to each first air pipe 14. A second stop block 19 opposite to the first stop block 17 is provided on the left side wall of the second air pipe 18. The second stop block 19 abuts against the top of the rotating plate 16. When the free end of the rotating plate 16 is located below the second stop block 19, the second stop block 19 abuts against the top of the rotating plate 16. The widths of the first stop block 17 and the second stop block 19 are both smaller than the distance between the rotating shaft and the nearest side wall adjacent to the rotating shaft, so as to ensure that when the first stop block 17 or the second stop block 19 is located on one side of the rotating shaft, the rotating plate 16 can still maintain an opening angle of 90°, ensuring the working efficiency of this solution. Magnets are symmetrically embedded in the left and right bottom walls of the first air pipe 14 near the second air pipe 18, and an iron block is embedded at one end of the second air pipe 18 near the rotation point on the rotating plate 16. The second air pipe 18 located on the upper side communicates with the first hose 11.

[0040] The pipeline switching mechanism includes a first air passage 20 opened in the lower part of the push handle 5, a slideway 21 opened in the air inlet pipe 7, a bracket 22 provided at the bottom of the air inlet pipe 7, and sliding plates 23 symmetrically provided on the front and rear sides of the push handle 5. The first air passage 20 is in an L shape, and the right side of the first air passage 20 penetrates through the right side wall of the push handle 5. The bottom of the first air passage 20 is also communicated with a conical card slot 24 opened in the push handle 5. The slider is located directly below the push handle 5. Two first springs 25 abutting against the push handle 5 are symmetrically provided in the left and right directions in the slideway 21. A conical protrusion 26 with the top located in the slideway 21 is integrally formed in the middle of the bracket 22. The protrusion 26 is located on the movement track of the card slot 24 and can be engaged with the card slot 24. A second air passage 27 penetrates through the protrusion 26, and the second air passage 27 is coaxially arranged with one side of the first air passage 20; all the second air passages 27 are communicated with a drainage pipe through a fourth hose 28. The two sliding plates 23 and the push handle 5 are jointly rotatably and sealingly connected in the air inlet pipe 7. Chute 29 are opened on the front and rear sides of the push handle 5, and the sliding plates 23 are slidably connected in the chutes 29. A second spring 30 is connected between the sliding plates 23 and the top of the chutes 29. A third stop block 31 abuts against the left side of the sliding plate 23 located on the front side, and a fourth stop block 32 abuts against the right side of the sliding plate 23 located on the rear side. The third stop block 31 and the fourth stop block 32 are both fixedly arranged in the air inlet pipe 7.

[0041] Inside the support frame 1, there are also successively arranged an analgesic layer and a brace layer from back to front. Both the analgesic layer and the brace layer are located inside the sealed airbag. The analgesic layer is attached to the brace layer, and the brace layer is slidably connected to the support frame inside the sealed airbag. Through holes communicating with the sliding holes 4 are provided on both the analgesic layer and the brace layer. The analgesic layer uses an existing analgesic patch, and the analgesic layer is attached to the human skin through an adhesive. The brace layer is made of an aluminum sheet, and the brace layer abuts against the extrusion airbag.

[0042] The working process of this solution:

[0043] The treatment method for patients with multiple rib fractures in multiple places (i.e., flail chest): First, let the patient lie on a stretcher or a hospital bed, and then use the binding strap 2 to tie him / her to the stretcher or the hospital bed, or directly tie it to the patient's body, so as to keep the sealed airbag and the support frame 1 on the front side of the patient's body.

[0044] Adjust the position of the corresponding extrusion airbag according to the specific rib position of the patient's fracture. Move the position of the guide box 8 and the extrusion airbag by sliding the push handle 5, and move the extrusion airbag directly above the fracture. Then rotate the push handle 5 so that the two sliders on it are separated from the third stop block 31 and the fourth stop block 32 respectively. At this time, the air inlet pipe 7 is communicated with the first hose 11, so that the sealed airbag and the air inlet pipe 7 can be inflated through the first hose 11. Before inflation, first rotate the first ventilation pipe 14 and the second ventilation pipe 18 so that the rotating plate 16 can only rotate upward (that is, the first stop block 17 is directly above the rotating shaft, and the second stop block 19 abuts against the bottom of the rotating plate 16). At this time, squeezing the pressure ball bag 13 will make the air in it enter the first hose 11 through the first ventilation pipe 14 located above, so as to realize the inflation of the air inlet pipe 7 and the sealed balloon. After releasing the pressure ball bag 13, the pressure ball bag 13 returns to its original position under its elastic force and generates negative pressure, so as to open the rotating plate 16 located below to achieve the effect of air replenishment. By repeating such operations, the rapid inflation of the sealed airbag and the extrusion airbag can be realized. When a certain amount of gas is filled into the extrusion airbag, the extrusion airbag moves towards the buffer layer under the action of the guide box 8, so as to exert pressure on the brace layer. With the certain plasticity of the brace layer, the brace layer can be plastically deformed according to the situation of the patient on site, so as to form a good fixing effect on the patient's fracture. When a certain amount of gas is filled into the sealed airbag, the elasticity of the sealed airbag is used to keep its contact and sealing with the human body surface. When the sealed airbag reaches the predetermined pressure, stop inflation, and then rotate the push handle 5 to reset it. With the help of the third stop block 31 and the fourth stop block 32, the push handle 5 can be quickly reset. It only requires the operator to rotate the push handle 5 in the reverse direction until it cannot move.

[0045] Then, press the corresponding push handle 5 downward so that the clamping groove 24 inside it is clamped and connected to the corresponding protrusion 26. At this time, the first ventilation channel 20 is communicated with the second ventilation channel 27, so that the first hose 11 is communicated with the gap inside the support frame 1. Then, rotate the first ventilation pipe 14 and the second ventilation pipe 18 so that both rotating plates 16 can only rotate downward. When the pressure balloon 13 is squeezed, the air inside the pressure balloon 13 flows out of the pressure balloon 13 through the rotating plate 16 on the lower side. When the pressure balloon 13 returns to its original position under the action of its own elastic force, a negative pressure is generated inside the pressure balloon 13, thereby opening the rotating plate 16 on the upper side, realizing the air extraction operation of the air inside the support frame 1, and finally generating a negative pressure inside it, so that this solution can better adsorb on the patient's body surface.

[0046] Treatment method for patients with open pneumothorax: Fix the free end of the drainage tube near the patient's wound, adjust the intake air regulating mechanism in this embodiment to the state of negative pressure suction, so as to discharge the gas in the patient's chest cavity out of the body through the fourth hose 28 and the drainage tube, alleviating the hypoxia caused by the collapse of the patient's lungs.

[0047] Treatment method for patients with open hemothorax: Before drainage, first connect a drainage bag between the fourth hose 28 and the drainage tube, and then adjust the intake air regulating mechanism in this embodiment to the state of negative pressure suction, so as to discharge the blood through the wound into the drainage bag through the fourth hose 28 and the drainage tube, realizing the temporary storage of blood. At the same time, it is also possible to replace as few components as possible when using it next time, achieving the purpose of cost saving.

[0048] Embodiment 2

[0049] As Figure 7 shown, the difference between this embodiment and Embodiment 1 is only that: the structure of the intake air regulating mechanism is different. The intake air regulating mechanism of this embodiment includes a Y-shaped connecting pipe 33, an air inflation pump 34 and a vacuum pump 35. The single-pipe end of the connecting pipe 33 is communicated with the first hose 11, and the air inflation pump 34 and the vacuum pump 35 are respectively connected to the double-pipe end of the connecting pipe 33.

[0050] The working process of this solution:

[0051] The difference in the working process of this embodiment from that of Embodiment 1 is only the operation mode of the intake air regulating mechanism. In this embodiment, when inflation is required, close the vacuum pump 35 and turn on the air inflation pump 34. At this time, the air inflation pump 34 realizes the inflation of the sealing airbag and the extrusion airbag. When suction is required, close the air inflation pump 34 and turn on the vacuum pump 35. At this time, the vacuum pump 35 realizes the suction of the internal space of the support frame 1. With the help of the air inflation pump 34 and the vacuum pump 35, rapid inflation and suction operations can be realized, which is more convenient in terms of working efficiency.

[0052] The above are only embodiments of the present invention, and common general technical solutions or characteristics in the embodiments are not described in detail herein. It should be noted that for those skilled in the art, without departing from the technical solution of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the implementation effect of the present invention and the practicability of the patent. The protection scope required by this application shall be subject to the content of its claims, and the specific implementation manners and the like recorded in the specification can be used to interpret the content of the claims.

Claims

1. A multifunctional negative pressure fixation device, characterized in that: It includes a support frame (1) and a sealing airbag arranged on one side of the support frame (1). Straps (2) are provided at the four corners of the support frame (1). A sealing plate (3) is covered on the side of the support frame (1) far from the sealing airbag. Arrayed and spaced sliders (4) are formed on the sealing plate (3). A push handle (5) is arranged in each slider (4). A baffle (6) that is slidably and sealingly connected to the slider (4) is covered on the push handle (5). The baffle (6) always seals the slider (4) when moving. An air inlet pipe (7) is penetrated through the push handle (5). An extrusion airbag located inside the support frame (1) is communicated with the air inlet pipe (7). The extrusion airbag is slidably connected to the sealing plate (3). A second hose (9) is connected between the extrusion airbag and the sealing airbag. All the air inlet pipes (7) are commonly communicated with a first hose (11) fixedly arranged on the sealing plate (3). An air inlet adjustment mechanism is arranged on the first hose (11) outside the support frame (1). The air inlet adjustment mechanism is used to supply air to or suck air from the first hose (11). A pipeline switching mechanism is further arranged on the push handle (5). The pipeline switching mechanism is used to connect the first hose (11) with the air inlet pipe (7) or connect the first hose (11) with the internal space enclosed by the support frame (1); The air inlet adjustment mechanism includes a pressing balloon (13) and first air pipes (14) communicated on both sides of the pressing balloon (13). A rotating plate (16) is rotatably and sealingly connected in each first air pipe (14). A first stopper (17) that abuts against the bottom of the rotating plate (16) is arranged on the side of each first air pipe (14) far from the free end of the rotating plate (16). A second air pipe (18) is rotatably connected to each first air pipe (14). A second stopper (19) opposite to the first stopper (17) is arranged on the second air pipe (18). The second stopper (19) abuts against the top of the rotating plate (16). The second air pipe (18) located on the upper side is communicated with the first hose (11); The pipeline switching mechanism includes a first ventilation channel (20) opened in the push handle (5), a slideway (21) opened in the intake pipe (7), a bracket (22) arranged at the bottom of the intake pipe (7), and sliding plates (23) symmetrically arranged on both sides of the push handle (5). The first ventilation channel (20) is in an L shape, the first ventilation channel (20) is communicated with the first hose (11), and the bottom of the first ventilation channel (20) is also communicated with a conical card slot (24) arranged in the push handle (5). The slideway (21) is provided with a first spring (25) abutted against the push handle (5). A conical protrusion (26) with the top located in the slideway (21) is integrally formed on the bracket (22). The protrusion (26) is located on the movement track of the card slot (24) and is matched with the card slot (24). A second ventilation channel (27) penetrates through the protrusion (26), and the second ventilation channel (27) is coaxially arranged with one side of the first ventilation channel (20). The two sliding plates (23) and the push handle (5) are jointly and rotationally and sealingly connected in the intake pipe (7).

2. The multifunctional negative pressure fixing device according to claim 1, characterized in that: The extrusion airbag is coated with a guiding box (8) communicated with the intake pipe (7). An opening is arranged at the rear side of the guiding box (8), and the guiding box (8) is slidably connected with the sealing plate (3).

3. The multifunctional negative pressure fixation device according to claim 1, characterized in that: The intake air regulating mechanism includes a Y-shaped connecting pipe (33), an air inflation pump (34), and a vacuum pump (35). The single-pipe end of the connecting pipe (33) is communicated with the first hose (11), and the air inflation pump (34) and the vacuum pump (35) are respectively connected to the double-pipe ends of the connecting pipe (33).

4. A multifunctional negative pressure fixing device according to claim 1, characterized in that: Magnets are symmetrically embedded in the first ventilation pipe (14), and an iron block is embedded at one end of the second ventilation pipe (18) close to the rotation point on the rotating plate (16).

5. A multifunctional negative pressure fixation device according to claim 4, characterized in that: The lengths of the first stop block (17) and the second stop block (19) are both smaller than the distance between the rotation point on the rotating plate (16) and the side wall on the nearest side of the rotation point.

6. A multifunctional negative pressure fixing device according to claim 1, characterized in that: The left side of any one of the sliding plates (23) abuts against a third stop block (31), and the right side of the other sliding plate (23) abuts against a fourth stop block (32). The third stop block (31) and the fourth stop block (32) are both fixedly arranged in the intake pipe (7).

7. A multifunctional negative pressure fixation device according to any one of claims 1-6, characterized in that: All the second ventilation channels (27) are communicated through a drainage pipe.

8. A multifunctional negative pressure fixing device according to any one of claims 1-6, characterized in that: A pain reliever layer and a brace layer are sequentially arranged in the support frame (1) from bottom to top, and the brace layer abuts against the extrusion airbag.

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