Limb fixing device for first aid
By designing an adjustable fixation mechanism and a thermal insulation structure, the problem of inflexible limb fixation in existing technologies has been solved, achieving precise fixation and comfortable transfer of limbs, and reducing the risk of secondary injury and shock.
Patent Information
- Application Number
- CN202511820249.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-04
- Publication Date
- 2026-01-13
AI Technical Summary
Existing emergency limb immobilization devices can only immobilize the upper or lower limbs, and it is difficult to flexibly adjust the immobilization position, which may lead to secondary injuries if the immobilization is not properly performed.
Design an emergency limb immobilization device that uses an adjustable immobilization mechanism, combined with an electric push rod, connecting frame, rotating shaft, rotating plate and airbag, to achieve precise immobilization of the limbs. It is also equipped with an adjustable warming pad and lifting mechanism to adapt to different body types and environments.
It achieves precise fixation of the limbs, reduces secondary injury, provides uniform pressure and support, keeps the injured area stable, adapts to different body types and environments, and reduces the risk of shock.
Smart Images
Figure CN121313397A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of limb immobilization technology, and more particularly to a limb immobilization device for emergency use. Background Technology
[0002] First aid refers to the initial medical care provided to people suffering accidental injuries or sudden illnesses in emergency situations. These measures aim to stabilize the patient's vital signs before professional medical assistance arrives, prevent the condition from worsening, and provide a foundation for further treatment. First aid limb immobilization devices are specially designed medical devices used to quickly and effectively immobilize injured limbs in emergency situations to reduce further injury and ensure the patient's safety and comfort during transport.
[0003] The existing technology has the following technical problems: it may only be able to fix the upper limb or only the lower limb, and it is difficult to flexibly adjust the position of the fixed limb structure. Therefore, an emergency limb fixation device is designed to provide another technical solution to the above technical problems. Summary of the Invention
[0004] Therefore, it is necessary to provide an emergency limb immobilization device to address the aforementioned technical problems, which may only be able to immobilize the upper limb or the lower limb in previous technologies, and make it difficult to flexibly adjust the position of the immobilized limb structure.
[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: An emergency limb immobilization device includes a fixation platform with multiple fixing slots inside. An adjusting block is slidably connected to the inner wall of the platform. A mounting plate is fixedly connected to the lower surface of the adjusting block. An electric push rod is fixedly connected inside the mounting plate. A push block is fixedly connected to the output end of the electric push rod. The outer wall of the push block is slidably connected to the inner wall of the adjusting block. A push plate is fixedly connected to the top of the push block. The outer wall of the push plate is slidably connected to the inside of the adjusting block. The push plate has symmetrically formed sliding grooves inside. A connecting rod is slidably connected to the inside of the adjusting block. A sliding column is fixedly connected to one end of the connecting rod, with its outer wall fitting against the inner wall of the sliding groove. A connecting piece is fixedly connected to the other end of the connecting rod, with its outer wall slidably connected to the inner wall of the adjusting block. A fixing post is fixedly connected to the outer wall of the connecting piece, with its outer wall slidably connected to the inside of the adjusting block and its outer wall abutting against the inner wall of the fixing slot. A fixing mechanism is provided on the outer wall of the push plate.
[0006] In a preferred embodiment of the limb immobilization device for emergency use provided by the present invention, the immobilization mechanism includes a connecting frame, the outer wall of the connecting frame is fixedly connected to the outer wall of the push plate, a connecting frame is fixedly connected to the upper surface of the connecting frame, a rotating shaft is rotatably connected inside the connecting frame, and a rotating plate is fixedly connected to the outer wall of the rotating shaft.
[0007] In a preferred embodiment of the limb immobilization device for emergency use provided by the present invention, the inside of the rotating plate is rotatably connected to a connecting column, the outer wall of the connecting column is slidably connected to the inner wall of the adjusting block, the top of the connecting column is fixedly connected to a clamping plate, the lower surface of the clamping plate is slidably connected to the upper surface of the adjusting block, and an airbag is provided on the inner wall of the clamping plate.
[0008] In a preferred embodiment of the limb immobilization device for emergency use provided by the present invention, a support shaft is fixedly connected to one side of the immobilization platform, a heat-insulating sheet is provided inside the support shaft, a first Velcro is provided on one side of the heat-insulating sheet, and a second Velcro is provided on one side of the immobilization platform, wherein the first Velcro and the second Velcro are bonded together.
[0009] In a preferred embodiment of the limb immobilization device for emergency use provided by the present invention, an adhesive surface is provided on the other side of the immobilization platform, the back side of the heat preservation sheet is bonded to the adhesive surface, and a lifting mechanism is provided on the lower surface of the immobilization platform.
[0010] In a preferred embodiment of the limb immobilization device for emergency use provided by the present invention, the lifting mechanism includes a fixed frame, the upper surface of which is fixedly connected to the lower surface of a fixed platform, a telescopic column fixedly connected to the lower surface of the fixed frame, a support block slidably connected to the outer wall of the telescopic column, a support platform fixedly connected to the outer wall of the support block, a base plate fixedly connected to the lower surface of the support platform, and casters provided on the lower surface of the base plate.
[0011] In a preferred embodiment of the limb immobilization device for emergency use provided by the present invention, a motor is fixedly connected inside the support platform, a worm gear is fixedly installed at the output end of the motor, the outer wall of the worm gear is rotatably connected to the inside of the support platform, a worm wheel is meshed with the tooth end of the worm gear, a support rod is fixedly connected inside the worm wheel, and the two ends of the support rod are rotatably connected to the inside of the support platform.
[0012] In a preferred embodiment of the limb immobilization device for emergency use provided by the present invention, a rotating block is fixedly connected to the outer wall of the support rod, a sliding plate is slidably connected to the inner wall of the rotating block, a connecting shaft is rotatably connected to the inside of the sliding plate, and the end of the connecting shaft away from the sliding plate is fixedly connected to the inside of the telescopic column.
[0013] It is clear without a doubt that the technical solution described above in this application can solve the technical problem that this application aims to address.
[0014] Meanwhile, through the above technical solutions, the present invention has at least the following beneficial effects: The present invention provides an emergency limb immobilization device, which features four adjustable immobilization mechanisms for the limbs. By activating an electric push rod, the position of the immobilization mechanism can be flexibly adjusted according to the injured parts of different patients, precisely corresponding to the physiological weight-bearing and support points of the limbs. This helps to maintain the stability of the injured parts and reduce secondary injuries caused by improper immobilization.
[0015] In the process of adjusting the position of the fixing mechanism within the fixing platform by the electric push rod, the present invention also drives the connecting frame to slide. Through the cooperation of the connecting frame, rotating shaft, rotating plate and connecting column, the positions of the clamping plates and airbags on both sides are adjusted. Through the design of the adjustable clamping plates and airbags, the adjustable rigid structure and adaptive flexible filling are combined to achieve precise fixation of patients of different body sizes, provide uniform pressure and support, and reduce secondary injuries.
[0016] This invention adds a warming pad to the injured person's limbs after immobilization. The warming pad can be flexibly adjusted according to the different body types of the injured person, and can also be rolled up and stored when not in use, providing the best warming effect for the injured person, helping to maintain the injured person's body temperature, preventing the body temperature from dropping due to excessively low ambient temperature, and helping to reduce the risk of shock.
[0017] The lifting mechanism designed in this invention allows for flexible adjustment of the height of the fixed platform, making it easy to adjust the platform to the most comfortable operating height. It can also be adapted to different transport tools and ambulances, ensuring that patients are transported safely and comfortably. Attached Figure Description
[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a partial structural diagram of the second hook and loop fastener of the present invention; Figure 3 This is a partial structural diagram of the fixing frame of the present invention; Figure 4 This is a partial structural diagram of the fixing column of the present invention; Figure 5This is a partial structural diagram of the pusher block of the present invention; Figure 6 This is a schematic diagram of the internal structure of the adjusting block of the present invention; Figure 7 This is a partial structural diagram of the push plate of the present invention; Figure 8 This is a schematic diagram of the internal structure of the support platform of the present invention; Figure 9 This is a schematic diagram of the internal structure of the support block of the present invention; Figure 10 This is a schematic diagram of the internal structure of the telescopic column of the present invention.
[0020] In the diagram: 1. Fixed platform; 2. Fixed groove; 3. Adjusting block; 4. Mounting plate; 5. Electric push rod; 6. Push block; 7. Push plate; 8. Slide groove; 9. Slide column; 10. Connecting rod; 11. Connecting piece; 12. Fixed column; 13. Fixed mechanism; 14. Connecting frame; 15. Connecting frame; 16. Rotating shaft; 17. Rotating plate; 18. Connecting column; 19. Clamping plate; 20. Airbag; 21. Support shaft; 22. Insulating sheet; 23. First Velcro; 24. Second Velcro; 25. Adhesive surface; 26. Lifting mechanism; 27. Fixed frame; 28. Telescopic column; 29. Support block; 30. Support platform; 31. Motor; 32. Worm gear; 33. Worm wheel; 34. Support rod; 35. Rotating block; 36. Slide piece; 37. Connecting shaft; 38. Base plate; 39. Caster wheel. Detailed Implementation
[0021] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.
[0022] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.
[0023] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.
[0024] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0025] Reference Figures 1-10An emergency limb immobilization device includes a fixing platform 1 with multiple fixing slots 2 inside. An adjusting block 3 is slidably connected to the inner wall of the fixing platform 1, providing support and limiting for the adjusting block 3. A mounting plate 4 is fixedly connected to the lower surface of the adjusting block 3, and an electric push rod 5 is fixedly connected inside the mounting plate 4. The mounting plate 4, fixed to the lower surface of the adjusting block 3, provides support and fixation for the electric push rod 5. A push block 6 is fixedly connected to the output end of the electric push rod 5, and the outer wall of the push block 6 is slidably connected to the inner wall of the adjusting block 3. A push plate 7 is fixedly connected to the top of the push block 6. The outer wall of the push plate 7 is slidably connected to the inside of the adjusting block 3. The inside of the push plate 7 is symmetrically provided with sliding grooves 8. The inside of the adjusting block 3 is slidably connected with a connecting rod 10. One end of the connecting rod 10 is fixedly connected with a sliding column 9. The outer wall of the sliding column 9 fits against the inner wall of the sliding groove 8. The other end of the connecting rod 10 is fixedly connected with a connecting piece 11. The outer wall of the connecting piece 11 is slidably connected to the inner wall of the adjusting block 3. The outer wall of the connecting piece 11 is fixedly connected with a fixing column 12. The outer wall of the fixing column 12 is slidably connected to the inside of the adjusting block 3. The outer wall of the fixing column 12 abuts against the inner wall of the fixing groove 2. The outer wall of the push plate 7 is provided with a fixing mechanism 13.
[0026] The usage process of the limb immobilization device for emergency treatment provided by this invention is as follows: The fixation platform 1 is equipped with four fixation mechanisms 13. Fixation mechanisms 13 in different positions can fix the limbs. The fixation mechanism 13 for upper limb fixation is slightly smaller than that for lower limb fixation. The remaining components are designed with different sizes but identical shapes and functions. The positions of the fixation mechanisms 13 can be flexibly adjusted according to the fixation needs of different patients. Activating the electric push rod 5 pushes the push block 6 to slide against the inner wall of the adjusting block 3. When the push block 6 slides, it drives the top push plate 7 to slide synchronously. The push plate 7 has symmetrically opened grooves 8 inside, and the inner wall of the grooves 8 is fitted with sliding columns 9. During the sliding process of the push plate 7, it squeezes and pushes the sliding columns 9, causing them to slide against the inner wall of the grooves 8. The connecting rod 10 is connected to the connecting piece 11 through the sliding columns 9, allowing the connection... The plate 11 drives the fixed column 12 to slide synchronously through the sliding of the connecting rod 10. When the fixed column 12 is fully retracted into the interior of the adjusting block 3, the position of the adjusting block 3 inside the fixed platform 1 can be adjusted. The fixed platform 1 has multiple fixing slots 2 inside. By sliding the fixed column 12 into or out of the fixing slots 2, the position of the adjusting block 3 inside the fixed platform 1 can be fixed or adjusted, thereby fixing different parts of the patient's limb, accurately corresponding to the physiological weight-bearing and support points of the limb, which helps to maintain the stability of the injured part and reduce secondary injuries caused by improper fixation. During the sliding of the push plate 7, the fixation mechanism 13 will also be adjusted. The fixation mechanism 13 limits and fixes the limb. One adjustment can achieve fixation of different injured parts and is suitable for patients of different body types.
[0027] Reference Figures 1-7The fixing mechanism 13 includes a connecting frame 14, the outer wall of which is fixedly connected to the outer wall of the push plate 7. A connecting frame 15 is fixedly connected to the upper surface of the connecting frame 14. The connecting frame 14 serves to connect and fix the push plate 7 and the connecting frame 15. A rotating shaft 16 is rotatably connected inside the connecting frame 15. A rotating plate 17 is fixedly connected to the outer wall of the rotating shaft 16. A connecting column 18 is rotatably connected inside the rotating plate 17. The outer wall of the connecting column 18 is slidably connected to the inner wall of the adjusting block 3. A clamping plate 19 is fixedly connected to the top of the connecting column 18. The connecting column 18 fixes the clamping plate 19. The lower surface of the clamping plate 19 is slidably connected to the upper surface of the adjusting block 3. An airbag 20 is provided on the inner wall of the clamping plate 19.
[0028] The usage process of the limb immobilization device for emergency treatment provided by this invention is as follows: During the sliding process of the push plate 7, the connecting frame 15 is also pushed to slide synchronously through the connecting frame 14. The connecting frame 15 has symmetrically arranged rotating shafts 16 inside. The rotating plate 17 is connected to the connecting frame 15 through the rotating shafts 16, so that the rotating plates 17 on both sides can rotate synchronously inside the adjusting block 3 through the sliding of the connecting frame 15 and the rotating shafts 16. The clamping plate 19 is connected to the rotating plate 17 through the connecting column 18, so that the connecting column 18 drives the clamping plates 19 on both sides to slide through the rotation of the rotating plate 17. The adjusting block 3 has a limiting groove inside that can limit the sliding of the connecting column 18 to ensure the stability of the connecting column 18 during the sliding process. The inner wall of the clamping plate 19 is provided with an airbag 20, which can be inflated. The airbag 20 can adapt to the irregular wheels of the limb. The airbag 20 distributes pressure evenly across the entire contact surface, reducing the risk of localized high pressure points. Applying appropriate pressure to the airbag 20 can compress blood vessels to help stop bleeding, and external pressure can promote lymphatic drainage, helping to reduce and prevent further swelling. The design of the adjustable clamping plate 19 combined with the airbag 20, along with the adjustable rigid structure and adaptive flexible filling, enables precise fixation for patients of different body sizes, providing uniform pressure and support, and reducing secondary injuries. Before the electric push rod 5 is activated, the fixing post 12 is designed to be completely retracted into the adjusting block 3, while the clamping plates 19 on both sides are at their furthest distance. Therefore, when the clamping plates 19 on both sides are adjusted, the fixing post 12 will be stably locked into the inner wall of the fixing groove 2.
[0029] Reference Figure 1 and Figure 2A support shaft 21 is fixedly connected to one side of the fixed platform 1. A heat insulation sheet 22 is installed inside the support shaft 21. The support shaft 21 is fixed to the upper surface of the fixed platform 1 to support the heat insulation sheet 22. A first Velcro 23 is provided on one side of the heat insulation sheet 22, and a second Velcro 24 is provided on one side of the fixed platform 1. The first Velcro 23 and the second Velcro 24 are bonded together. An adhesive surface 25 is provided on the other side of the fixed platform 1. The back side of the heat insulation sheet 22 is bonded to the adhesive surface 25. A lifting mechanism 26 is provided on the lower surface of the fixed platform 1.
[0030] The usage process of the limb immobilization device for emergency treatment provided by this invention is as follows: The fixing platform 1 is equipped with a warming pad 22 for keeping the injured person's limbs warm. A first Velcro 23 is provided on one side of the warming pad 22, which can be rolled up and stored when not in use. A second Velcro 24 is provided on one side of the fixing platform 1, which can be glued together when the first Velcro 23 and the second Velcro 24 are aligned, thereby storing and fixing the rolled-up warming pad 22. After fixing the injured person's limbs, the warming pad 22 can be unfolded. The back of the warming pad 22 is made of a material that can be glued to the adhesive surface 25. The width of the warming pad 22 can be adjusted according to the different body shapes of the injured person. By gluing the back of the warming pad 22 to the adhesive surface 25, the warming pad 22 can be fixed. The adjustable design provides the best warming effect for the injured person, helps maintain the injured person's body temperature, prevents the body temperature from dropping due to the low ambient temperature, and helps reduce the risk of shock.
[0031] Reference Figure 1 , Figure 2 , Figure 8 , Figure 9 and Figure 10The lifting mechanism 26 includes a fixed frame 27, the upper surface of which is fixedly connected to the lower surface of the fixed platform 1. A telescopic column 28 is fixedly connected to the lower surface of the fixed frame 27, providing support and fixation for the fixed frame 27. A support block 29 is slidably connected to the outer wall of the telescopic column 28, and a support platform 30 is fixedly connected to the outer wall of the support block 29, fixing the support block 29. A base plate 38 is fixedly connected to the lower surface of the support platform 30, fixing the support platform 30. A caster wheel 39 is provided on the lower surface of the base plate 38, facilitating the movement of the entire device. The motor 31 is fixedly connected inside the support platform 30, which supports and fixes the motor 31. A worm gear 32 is fixedly installed at the output end of the motor 31. The outer wall of the worm gear 32 is rotatably connected inside the support platform 30. A worm wheel 33 is meshed with the tooth end of the worm gear 32. A support rod 34 is fixedly connected inside the worm wheel 33. Both ends of the support rod 34 are rotatably connected inside the support platform 30. A rotating block 35 is fixedly connected to the outer wall of the support rod 34. A sliding plate 36 is slidably connected to the inner wall of the rotating block 35. A connecting shaft 37 is rotatably connected inside the sliding plate 36. The end of the connecting shaft 37 away from the sliding plate 36 is fixedly connected to the inside of the telescopic column 28.
[0032] The usage process of the limb immobilization device for emergency treatment provided by this invention is as follows: The height of the fixed platform 1 can be flexibly adjusted through the lifting mechanism 26. The starting motor 31 drives the worm gear 32 to rotate inside the support platform 30. The toothed ends of the worm gear 32 are engaged with worm wheels 33, which can rotate synchronously with the rotation of the worm gear 32. During the rotation of the worm wheel 33, it will drive the internal support rod 34 to rotate inside the support platform 30, and also provide stable support for the rotation of the worm wheel 33. During the rotation of the support rod 34, it will drive the rotating block 35 to rotate synchronously. The rotating block 35 has a groove inside that can limit the sliding of the slide plate 36. When the rotating block 35 rotates, the slide plate 36 will slide on its inner wall. During the sliding process, the telescopic column 28 will be pushed to slide on the inner wall of the support block 29 through the connecting shaft 37. Thus, the sliding of the telescopic column 28 will push the fixed frame 27 and the fixed platform 1 to slide, and the height of the fixed platform 1 can be adjusted to the most comfortable operating height. At the same time, it can also adapt to different transport tools and ambulances, ensuring that patients are transported safely and comfortably.
[0033] In this embodiment, each structure has its own service life. In actual manufacturing and application, the corresponding structure made of different materials can be replaced according to the needs of use.
[0034] In this embodiment, the motor 31 is a self-locking motor 31, which can drive the connected structure to rotate normally when it is powered on and working. When the motor 31 stops working, it can prevent the connected structure from rotating through its self-locking function.
[0035] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims
1. A limb immobilization device for emergency use, comprising a fixation platform (1), characterized in that, The fixed platform (1) has multiple fixed slots (2) inside. An adjusting block (3) is slidably connected to the inner wall of the fixed platform (1). An mounting plate (4) is fixedly connected to the lower surface of the adjusting block (3). An electric push rod (5) is fixedly connected inside the mounting plate (4). A push block (6) is fixedly connected to the output end of the electric push rod (5). The outer wall of the push block (6) is slidably connected to the inner wall of the adjusting block (3). A push plate (7) is fixedly connected to the top of the push block (6). The outer wall of the push plate (7) is slidably connected to the inside of the adjusting block (3). Sliding grooves (8) are symmetrically opened inside the push plate (7). A connecting rod (10) is slidably connected inside the block (3). One end of the connecting rod (10) is fixedly connected to a sliding column (9). The outer wall of the sliding column (9) is in contact with the inner wall of the sliding groove (8). The other end of the connecting rod (10) is fixedly connected to a connecting piece (11). The outer wall of the connecting piece (11) is slidably connected to the inner wall of the adjusting block (3). The outer wall of the connecting piece (11) is fixedly connected to a fixing column (12). The outer wall of the fixing column (12) is slidably connected inside the adjusting block (3). The outer wall of the fixing column (12) abuts against the inner wall of the fixing groove (2). A fixing mechanism (13) is provided on the outer wall of the push plate (7).
2. The limb immobilization device for emergency use according to claim 1, characterized in that, The fixing mechanism (13) includes a connecting frame (14), the outer wall of the connecting frame (14) is fixedly connected to the outer wall of the push plate (7), the upper surface of the connecting frame (14) is fixedly connected to a connecting frame (15), the inside of the connecting frame (15) is rotatably connected to a rotating shaft (16), and the outer wall of the rotating shaft (16) is fixedly connected to a rotating plate (17).
3. The limb immobilization device for emergency use according to claim 2, characterized in that, The rotating plate (17) is rotatably connected to a connecting column (18). The outer wall of the connecting column (18) is slidably connected to the inner wall of the adjusting block (3). A clamping plate (19) is fixedly connected to the top of the connecting column (18). The lower surface of the clamping plate (19) is slidably connected to the upper surface of the adjusting block (3). An airbag (20) is provided on the inner wall of the clamping plate (19).
4. The limb immobilization device for emergency use according to claim 1, characterized in that, A support shaft (21) is fixedly connected to one side of the fixed platform (1). A heat insulation sheet (22) is provided inside the support shaft (21). A first Velcro (23) is provided on one side of the heat insulation sheet (22). A second Velcro (24) is provided on one side of the fixed platform (1). The first Velcro (23) and the second Velcro (24) are bonded together.
5. A limb immobilization device for emergency use according to claim 4, characterized in that, An adhesive surface (25) is provided on the other side of the fixed platform (1), the back side of the heat preservation sheet (22) is bonded to the adhesive surface (25), and a lifting mechanism (26) is provided on the lower surface of the fixed platform (1).
6. A limb immobilization device for emergency use according to claim 5, characterized in that, The lifting mechanism (26) includes a fixed frame (27), the upper surface of which is fixedly connected to the lower surface of the fixed platform (1), and a telescopic column (28) is fixedly connected to the lower surface of the fixed frame (27). A support block (29) is slidably connected to the outer wall of the telescopic column (28), and a support platform (30) is fixedly connected to the outer wall of the support block (29). A base plate (38) is fixedly connected to the lower surface of the support platform (30), and a caster wheel (39) is provided on the lower surface of the base plate (38).
7. A limb immobilization device for emergency use according to claim 6, characterized in that, A motor (31) is fixedly connected inside the support platform (30). A worm (32) is fixedly installed at the output end of the motor (31). The outer wall of the worm (32) is rotatably connected to the inside of the support platform (30). A worm wheel (33) is meshed with the tooth end of the worm (32). A support rod (34) is fixedly connected inside the worm wheel (33). Both ends of the support rod (34) are rotatably connected to the inside of the support platform (30).
8. A limb immobilization device for emergency use according to claim 7, characterized in that, The outer wall of the support rod (34) is fixedly connected to a rotating block (35), the inner wall of the rotating block (35) is slidably connected to a sliding plate (36), the inside of the sliding plate (36) is rotatably connected to a connecting shaft (37), and the end of the connecting shaft (37) away from the sliding plate (36) is fixedly connected to the inside of the telescopic column (28).