A limb restraint device

Abstract

The utility model discloses a kind of limb binding devices, it is related to limb binding technical field.The utility model includes mattress and bedstead, mattress is placed on bedstead, and placing plate is placed on mattress, placing plate both sides are equipped with lower fixed block, lower fixed block upper side is hinged with upper fixed block, one side is equipped with fixed component, and bedstead both sides are equipped with fixed groove, and fixed component one end is tied in bedstead through fixed groove;Two limit components are elastically fitted in lower fixed block, fixed component is vertically equipped with clamping groove, and the opposite inner side of two limit components is located in clamping groove, and the one side of lower fixed block is slidably fitted with button.The utility model is matched with pivot one and pivot two, and it is convenient to press button to make two push-pull rods rotate open, so that push-pull rod extrusion limit component is separated from clamping groove, and then release the limit of fixed component, realize the convenient replacement of fixed component.

Description

Technical Field

[0001] This utility model belongs to the field of limb restraint, specifically, it relates to a limb restraint device. Background Technology

[0002] Limb restraint devices are medical devices used to restrict the movement of a patient's limbs. In internal medicine, many patients require limb restraint due to their medical conditions.

[0003] Chinese Patent No. CN219782892U discloses a limb restraint frame, comprising: a mattress, a restraint mechanism movably connected to the upper end of the mattress, the restraint mechanism including a connecting plate, an upper airbag, an upper fixing plate, an upper fixing block, a lower fixing block, a restraint strap, fixing holes, buckles, fixing bolts, a lower airbag, and a lower fixing plate; the lower fixing plate is fixedly connected to the outer wall of the connecting plate; a bed board is movably connected to the bottom end of the mattress, a fixing groove is provided on the top of the bed board, a bed frame is fixedly connected to one end of the bed board; an inflation mechanism is movably connected to the outer wall of the restraint mechanism; and the restraint strap is fixedly connected to the right side of the lower airbag.

[0004] The limb restraint frame disclosed in the application is fixed in use by binding the restraint mechanism with restraint straps in the fixing groove. After long-term use, the restraint straps may be damaged or broken due to frequent pulling. Since the restraint straps are fixed to the lower airbag, the entire restraint mechanism needs to be untied, making it inconvenient to replace the restraint straps. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a limb restraint device that solves the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by this utility model is as follows:

[0007] A limb restraint device includes: a mattress and a bed frame, the mattress is placed on the bed frame, a placement board is placed on the mattress, lower fixing blocks are installed on both sides of the placement board, an upper fixing block is hinged to the upper side of the lower fixing block and a fixing component is snapped onto one side, the lower fixing block is located between the placement board and the fixing component, and fixing grooves are provided on both sides of the bed frame, the fixing grooves penetrate through the lower side of the bed frame, the fixing grooves are L-shaped, and one end of the fixing component is tied to the bed frame through the fixing groove;

[0008] The lower fixed block has two limiting components that are elastically fitted inside. The fixed component has a slot that runs through it. The inner sides of the two limiting components are located in the slot. A button is slidably fitted on one side of the lower fixed block. Two side plates are installed on one end of the button. A rotating shaft is installed between the two side plates. Two push-pull rods are rotatably fitted around the rotating shaft. A rotating shaft is installed on the side of the limiting component. The end of the push-pull rod away from the rotating shaft is sleeved on the corresponding side of the rotating shaft.

[0009] Optionally, the fixing components include a mounting block and a belt. One side of the mounting block is snapped into the lower fixing block, and a slot is provided on the mounting block. The belt is installed on one side of the mounting block, and one end of the belt passes through the fixing slot.

[0010] Optionally, the limiting component includes a moving block and a connecting plate 1. The moving block is engaged in a slot, the connecting plate 1 is installed in a lower fixed block, a spring 1 is installed between the moving block and the connecting plate 1, a moving column is installed on one side of the moving block, and both the moving column and the moving block are slidably fitted in the lower fixed block. A rotating shaft 2 is installed on the side of the moving column.

[0011] Optionally, the lower fixed block has a mounting groove on one side, and the mounting block is located in the mounting groove. The upper and lower sides of the mounting groove are provided with movable grooves and storage grooves. The movable grooves are connected to the storage grooves. The connecting plate is installed on the corresponding side of the storage groove. The moving column is slidably fitted in the corresponding movable groove. The mounting groove has an adjustment groove on one side, which is connected to the upper and lower movable grooves. The push-pull rod is slidably fitted in the adjustment groove, and the end of the push-pull rod is located in the movable groove. The lower fixed block has a slot hole connected to the adjustment groove on one side, and the button passes through the slot hole laterally.

[0012] Optionally, an upper fixing plate is installed on one side of the upper fixing block, and a lower fixing plate is installed on one side of the lower fixing block. The upper fixing plate is located above the lower fixing plate. A snap-fit ​​component is elastically fitted inside the lower fixing plate. A limiting block is provided on the lower side of the upper fixing plate. A transverse groove is provided on the side of the limiting block away from the upper fixing block. The transverse groove passes through the limiting block laterally. One side of the snap-fit ​​component is snapped into the transverse groove. A lever is installed on one side of the snap-fit ​​component. The lever passes through laterally to the outside of the lower fixing plate. A lever block is installed on one end face of the lever. The lever block is slidably fitted on one side of the lower fixing plate.

[0013] Optionally, the snap-fit ​​assembly includes a snap-fit ​​block located in a transverse groove, a connecting plate II installed in the lower fixed plate, a spring II installed between the snap-fit ​​block and the connecting plate II, the snap-fit ​​block slidingly engaging in the lower fixed plate, and a lever installed on one side of the snap-fit ​​block.

[0014] Optionally, the upper side of the lower fixed plate is provided with a vertical groove that matches the limiting block. A storage groove 2 is provided on one side of the vertical groove, and a sliding groove is provided on the adjacent side. The sliding groove passes through one side of the lower fixed plate. The lever is slidably engaged in the sliding groove. The connecting plate 2 is installed on one side of the storage groove 2. The spring 2 is located in the storage groove 2. The locking block is slidably engaged in the vertical groove and the storage groove 2.

[0015] Optionally, an electric air pump is installed on the upper side of the placement plate. Both sides of the electric air pump are connected to air guide tubes. Two air distribution tubes are connected to the side of the air guide tubes. Airbags are installed on the inner walls of the upper and lower fixed blocks. The airbags are located between the upper and lower fixed blocks. One end of each of the two air distribution tubes passes through the upper and lower fixed blocks and is connected to the corresponding airbag.

[0016] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art. Of course, any product implementing the present invention does not necessarily need to achieve all of the following advantages at the same time:

[0017] By using the combination of pivot one and pivot two, it is easy to press the button to rotate and open the two push-pull rods, thereby causing the push-pull rods to squeeze the limiting component out of the slot, thus releasing the limitation on the fixing component and enabling convenient replacement of the fixing component. The combination of the limiting component and the slot makes it easy to connect the lower fixing block and the fixing component together, and the combination of the fixing component and the fixing groove makes it easy to fix the placement board and the lower fixing block on the mattress, improving the restraint stability.

[0018] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0019] The accompanying drawings described below are merely some embodiments. Those skilled in the art can obtain other drawings based on these drawings without any creative effort.

[0020] In the picture:

[0021] Figure 1 This is a schematic diagram of the restraint device's main structure;

[0022] Figure 2 This is a schematic diagram of the fixed component structure;

[0023] Figure 3 This is a schematic diagram of the snap-fit ​​assembly structure;

[0024] Figure 4 This is a schematic diagram of the cross-sectional structure of the lower fixed block.

[0025] The attached diagram lists the components represented by each number as follows:

[0026] Mattress 1, Placement board 2, Electric air pump 3, Bed frame 4, Upper fixing block 5, Lower fixing block 6, Upper fixing plate 7, Lower fixing plate 8, Toggle block 9, Toggle lever 10, Spring 11, Connecting plate 12, Storage slot 13, Locking block 14, Vertical groove 15, Horizontal groove 16, Limiting block 17, Push-pull rod 18, Button 19, Moving column 20, Storage slot 21, Spring 22, Moving block 23, Rotating shaft 1 24, Connecting plate 25, Mounting block 26.

[0027] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the present invention in any way, but rather to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] In the medical field, limb restraint devices, as important assistive devices, deserve in-depth discussion regarding their development history and current applications. These devices are primarily used for patient safety during treatment, especially in settings such as psychiatric wards, emergency departments, and intensive care units. By restricting the range of motion of the patient's limbs, they prevent self-harm due to unconscious behavior or accidental dislodgement of medical tubing. Existing technologies, based on functional requirements and differences in the usage environment, have developed various restraint devices with different structural features. Their evolution reflects the continuous driving force of clinical needs on technological innovation.

[0031] Early clinical restraint devices mostly employed rigid fixation methods, such as metal handcuffs. While these products offered significant immobilization, they suffered from noticeable comfort drawbacks. Direct contact between the metal material and skin easily led to pressure sores, and the lack of temperature regulation could cause localized hypothermia in patients during winter. With advancements in medical materials technology, soft restraint belts have gradually become mainstream. Their basic structure typically consists of high-strength textile straps and fasteners, with length adjustment achieved via Velcro or snaps. These products are particularly widely used in psychiatric hospitals, allowing caregivers to quickly adjust the restraint intensity according to the patient's body shape. However, prolonged use still carries the risk of impaired blood circulation, especially in extremities such as the wrists and ankles, where concentrated pressure can easily cause swelling.

[0032] To enhance comfort and safety, some improved devices incorporate a cushioning layer on the contact surface, using medical-grade silicone or memory foam as the lining material. This design has proven effective in geriatric and pediatric applications. For example, semi-open restraint gloves designed for Alzheimer's patients use a three-dimensional structure to restrict finger movement while preserving hand space, avoiding the anxiety caused by traditional full-coverage gloves. Pediatric restraint devices generally employ a split design, with the chest and abdominal fixation straps and limb restraint components being independently detachable for convenient localized fixation during examinations of infants and young children. Notably, these devices often feature quick-release mechanisms, allowing medical personnel to instantly release the restraints in emergencies through specific operations, significantly improving emergency response efficiency.

[0033] In terms of functional expansion, intelligent restraint systems have begun to enter the clinical trial stage. These devices integrate pressure sensors and motion monitoring modules, providing real-time feedback on restraint force and patient activity status. For example, one model of upper limb restraint belt has a built-in fiber optic sensor network that triggers an audible and visual alarm when abnormal muscle tension is detected, alerting medical staff to intervene promptly. Some high-end products are also equipped with wireless transmission capabilities, allowing monitoring data to be synchronized to a nursing information system for remote monitoring of the restraint status. However, these devices currently suffer from high costs and complex maintenance, and are not yet widely adopted in primary healthcare institutions.

[0034] In terms of structural innovation, adjustable limb immobilizers, which have emerged in recent years, showcase new design concepts. This device employs a modular design, with the main support frame injection-molded from medical-grade polypropylene. A sliding rail mechanism allows for multi-dimensional adjustment of length and angle. In clinical applications, doctors can immobilize the patient's limb in specific functional positions, such as shoulder abduction or knee flexion, according to treatment needs. This is of significant value for postoperative rehabilitation training. The accompanying restraint straps are made of breathable mesh material, ensuring restraint while improving airflow at the skin contact surface, effectively reducing the incidence of skin complications such as eczema.

[0035] Advances in materials science have also supported improvements in the performance of restraint devices. The application of antibacterial coatings significantly reduces the risk of cross-infection; a restraint band with a nano-silver ion coating developed by a research institution showed a 99.6% inhibition rate against Staphylococcus aureus in laboratory tests. The introduction of shape memory alloys gives the device adaptive adjustment characteristics; when the ambient temperature changes, the alloy components can automatically adjust the restraint force to maintain the optimal pressure value. The application of these new materials technologies has enabled traditional restraint devices to gradually evolve towards intelligence and functionality.

[0036] In actual clinical applications, the needs for restraint devices vary significantly across different departments. Psychiatric wards prioritize the device's anti-escape performance, often employing multi-point fixation designs in conjunction with alarm devices; rehabilitation departments emphasize joint protection, requiring devices with precise angle locking capabilities; pediatric-specific products generally feature cartoonish designs to alleviate children's fear, while favoring soft, skin-friendly silicone composite materials. This trend of specialization has prompted manufacturers to develop a series of products for specific scenarios, but it has also led to problems such as poor device compatibility and inconsistent operating standards.

[0037] In terms of clinical application guidelines, the design of modern restraint devices increasingly emphasizes ethical considerations. New products generally employ concealed locking mechanisms, avoiding the psychological pressure associated with traditional exposed locks; the use of transparent materials allows medical staff to directly observe the condition of the skin contact surface; and detachable designs facilitate local cleaning and disinfection. These improvements reflect a trend towards humanistic care in medical device development. Notably, some high-end devices are beginning to integrate biofeedback modules, automatically releasing soothing aromas or activating vibration massage functions when detecting patient emotional agitation. This proactive intervention mode opens new avenues for the intelligent development of restraint devices.

[0038] Please see Figure 1-4 As shown, this embodiment provides a limb restraint device, including: a mattress 1 and a bed frame 4. The mattress 1 is placed on the bed frame 4, and a placement board 2 is placed on the mattress 1. Lower fixing blocks 6 are installed on both sides of the placement board 2. An upper fixing block 5 is hinged to the upper side of the lower fixing block 6, and a fixing component is snapped onto one side. The lower fixing block 6 is located between the placement board 2 and the fixing component. Fixing grooves are provided on both sides of the bed frame 4. The fixing grooves penetrate the lower side of the bed frame 4. The fixing grooves are L-shaped structures. One end of the fixing component is tied to the bed frame 4 through the fixing groove.

[0039] The lower fixed block 6 has two limiting components that are elastically fitted inside. The fixing component has a slot that runs through it. The two limiting components are located in the slot on opposite sides. A button 19 is slidably fitted on one side of the lower fixed block 6. Two side plates are installed on one end of the button 19. A rotating shaft 24 is installed between the two side plates. Two push-pull rods 18 are rotatably fitted around the rotating shaft 24. A second rotating shaft is installed on the side of the limiting component. The end of the push-pull rod 18 away from the first rotating shaft 24 is sleeved on the corresponding second rotating shaft.

[0040] One application of this embodiment is as follows: When the fixing component needs to be replaced due to wear, firstly, the binding to the bed frame 4 is released. Then, button 19 is pressed into the lower fixing block 6. When button 19 slides, the compression of the first rotating shaft 24 and the restriction of the horizontal sliding of the second rotating shaft on the push-pull rod 18 cause the two push-pull rods 18 to rotate and open, thereby pushing the limiting component to slide away from the fixing component, causing the limiting component to disengage from the slot, thus releasing the limitation on the fixing component. Then, the fixing component is pulled out from the lower fixing block 6. Similarly, following the above operation, the button is pressed and the replaced fixing component is inserted into the lower fixing block 6. When the fixing component is inserted into place, button 19 is released, and the limiting component is quickly reset and locked into the slot by the elastic force, thus completing the replacement of the fixing component. It should be noted that all electrical equipment involved in this application can be powered by a battery or an external power source.

[0041] By cooperating with pivot 24, it is easy to press the button to rotate and open the two push-pull rods 18, thereby causing the push-pull rods 18 to squeeze the limiting component out of the slot, thus releasing the limitation on the fixing component and realizing convenient replacement of the fixing component. By cooperating with the limiting component and the slot, it is easy to connect the lower fixing block 6 with the fixing component. By cooperating with the fixing component and the fixing groove, it is easy to fix the placement plate 2 and the lower fixing block 6 on the mattress 1, improving the restraint stability.

[0042] like Figure 2 , 4 As shown, the fixing component of this embodiment includes a mounting block 26 and a belt. One side of the mounting block 26 is snapped into the lower fixing block 6, and a slot is provided on the mounting block 26. The belt is installed on one side of the mounting block 26, and one end of the belt passes through the fixing slot. By cooperating with the limiting component through the mounting block 26, the belt can be easily fixedly connected to the lower fixing block 6. By cooperating with the fixing slot through the belt, the convenience of using the device is improved.

[0043] like Figure 4 As shown, the limiting component in this embodiment includes a movable block 23 and a connecting plate 12. The movable block 23 is engaged in the slot, and the connecting plate 12 is installed in the lower fixed block 6. A spring 11 is installed between the movable block 23 and the connecting plate 12. A movable column 20 is installed on one side of the movable block 23. Both the movable column 20 and the movable block 23 are slidably engaged in the lower fixed block 6. A rotating shaft 2 is installed on the side of the movable column 20. When the button 19 is deactivated, the spring 11 facilitates the rapid reset of the movable block 23, keeping it engaged in the slot. The movable column 20 cooperates with the push-pull rod 18 to convert the rotation effect of the push-pull rod 18 into the sliding effect of the movable column 20, thereby enabling the movable column 20 to drive the movable block 23 to slide.

[0044] like Figure 4As shown, in this embodiment, the lower fixing block 6 has a mounting groove on one side, and the mounting block 26 is located in the mounting groove on one side. The upper and lower sides of the mounting groove are provided with movable grooves and storage grooves 13. The movable grooves are connected to the storage grooves 13. The connecting plate 12 is installed on the corresponding storage groove 13 side. The moving column 20 is slidably fitted in the corresponding movable groove. The mounting groove has an adjustment groove on one side, which is connected to the upper and lower movable grooves. The push-pull rod 18 is movably fitted in the adjustment groove, and the end of the push-pull rod 18 is located in the movable groove. The lower fixing block 6 has a slot hole connected to the adjustment groove on one side. The button 19 passes through the slot hole horizontally. The mounting groove facilitates the insertion of the mounting block 26, so that the slot is vertically aligned with the two storage grooves 13. This facilitates the sliding of the moving block 23 into the slot along the storage groove 13. The movable groove provides space for the push-pull rod 18 and the moving column 20 to move, so that the push-pull rod 18 can push the moving column 20 to slide when it rotates.

[0045] like Figure 2 , 3 As shown, in this embodiment, an upper fixing plate 7 is installed on one side of the upper fixing block 5, and a lower fixing plate 8 is installed on one side of the lower fixing block 6. The upper fixing plate 7 is located above the lower fixing plate 8. A snap-fit ​​assembly is elastically fitted inside the lower fixing plate 8. A limiting block 17 is provided on the lower side of the upper fixing plate 7. A transverse groove 16 is provided on the side of the limiting block 17 away from the upper fixing block 5. The transverse groove 16 passes through the limiting block 17 laterally. One side of the snap-fit ​​assembly is snapped into the transverse groove 16. A lever 10 is installed on one side of the snap-fit ​​assembly. The lever 10 passes through the lower fixing plate 8 laterally. A lever block 9 is installed on one end face of the lever 10. The lever block 9 is slidably fitted on one side of the lower fixing plate 8. By moving the lever block 9, the lever 10 drives the snap-fit ​​assembly to slide, thereby causing the snap-fit ​​assembly to disengage from the transverse groove 16, thus releasing the restriction on the rotation of the upper fixing block 5.

[0046] like Figure 3 As shown, the snap-fit ​​assembly of this embodiment includes a snap-fit ​​block 14, which is located in the transverse groove 16. A connecting plate 25 is installed in the lower fixing plate 8. A spring 22 is installed between the snap-fit ​​block 14 and the connecting plate 25. The snap-fit ​​block 14 is slidably engaged in the lower fixing plate 8. A lever 10 is installed on one side of the snap-fit ​​block 14. By engaging the snap-fit ​​block 14 with the transverse groove 16, it is convenient to snap-fit ​​and fix the upper fixing block 5, reducing the probability of the upper fixing block 5 rotating and opening during use. The spring 22 facilitates the quick reset of the snap-fit ​​block 14, thereby keeping the snap-fit ​​block 14 snap-fit ​​in the transverse groove 16.

[0047] like Figure 3As shown, the lower fixing plate 8 in this embodiment has a vertical groove 15 on its upper side that is adapted to the limiting block 17. A storage groove 21 is provided on one side of the vertical groove 15 and a sliding groove is provided on the adjacent side. The sliding groove passes through one side of the lower fixing plate 8. The lever 10 is slidably engaged in the sliding groove. The connecting plate 25 is installed on one side of the storage groove 21. The spring 22 is located in the storage groove 21. The locking block 14 is slidably engaged in the vertical groove 15 and the storage groove 21. The sliding groove facilitates the use of the lever 9 to drive the locking block 14 to disengage from the horizontal groove 16, so that the locking block 14 can slide completely into the storage groove 21.

[0048] like Figure 1 As shown, an electric air pump 3 is installed on the upper side of the placement plate 2 in this embodiment. Air guide tubes are connected to both sides of the electric air pump 3. Two air distribution tubes are connected to the side of the air guide tubes. Airbags are installed on the inner walls of the upper fixing block 5 and the lower fixing block 6. The airbags are located between the upper fixing block 5 and the lower fixing block 6. One end of each of the two air distribution tubes passes through the upper fixing block 5 and the lower fixing block 6 respectively and is connected to the corresponding airbag. By controlling the operation of the electric air pump 3, it is convenient to send external air into the corresponding airbag through the air guide tubes and air distribution tubes, so that the airbag slowly expands and wraps around the patient's limbs, thereby further restraining the patient's limbs.

[0049] This utility model is not limited to the above-described embodiments. Anyone should know that structural changes made under the guidance of this utility model, and any technical solutions that are the same as or similar to this utility model, fall within the protection scope of this utility model. Technical aspects, shapes, and structures not described in detail in this utility model are all publicly known technologies.

Claims

1. A limb restraint device, characterized in that, include: Mattress (1) and bed frame (4), the mattress (1) is placed on the bed frame (4), a placement board (2) is placed on the mattress (1), a lower fixing block (6) is installed on both sides of the placement board (2), an upper fixing block (5) is hinged on the upper side of the lower fixing block (6), and a fixing component is snapped on one side. The bed frame (4) has fixing grooves on both sides, and one end of the fixing component is tied to the bed frame (4) through the fixing groove. The lower fixing block (6) has two limiting components that are elastically fitted inside. The fixing component has a slot in the vertical direction. The two limiting components are located in the slot on opposite sides. The lower fixing block (6) has a button (19) that is slidably fitted on one side. The button (19) has two side plates installed on one end face. A rotating shaft (24) is installed between the two side plates. Two push-pull rods (18) are rotatably fitted around the rotating shaft (24). A rotating shaft (2) is installed on the side of the limiting component. The end of the push-pull rod (18) away from the rotating shaft (24) is sleeved on the corresponding rotating shaft (2) around the side.

2. The limb restraint device according to claim 1, characterized in that, The fixing component includes a mounting block (26) and a belt. One side of the mounting block (26) is snapped into the lower fixing block (6), and a slot is provided on the mounting block (26). The belt is installed on one side of the mounting block (26).

3. A limb restraint device according to claim 2, characterized in that, The limiting component includes a moving block (23) and a connecting plate (12). The moving block (23) is snapped into the slot, and the connecting plate (12) is installed in the lower fixed block (6). A spring (11) is installed between the moving block (23) and the connecting plate (12). A moving column (20) is installed on one side of the moving block (23), and a rotating shaft is installed on the side of the moving column (20).

4. A limb restraint device according to claim 2, characterized in that, The lower fixed block (6) has an installation groove on one side, and the installation block (26) is located in the installation groove on one side. The upper and lower sides of the installation groove are provided with movable grooves and storage groove 1 (13). The connecting plate 1 (12) is installed on the side of the corresponding storage groove 1 (13). The moving column (20) is slidably fitted in the corresponding movable groove. The installation groove has an adjustment groove on one side, and the push-pull rod (18) is movably fitted in the adjustment groove. The lower fixed block (6) has a slot hole connected to the adjustment groove on one side, and the button (19) passes through the slot hole horizontally.

5. A limb restraint device according to claim 1, characterized in that, An upper fixing plate (7) is installed on one side of the upper fixing block (5), and a lower fixing plate (8) is installed on one side of the lower fixing block (6). A snap-fit ​​component is elastically fitted inside the lower fixing plate (8). A limiting block (17) is provided on the lower side of the upper fixing plate (7). A transverse groove (16) is provided on the side of the limiting block (17) away from the upper fixing block (5). One side of the snap-fit ​​component is snapped into the transverse groove (16). A lever (10) is installed on one side of the snap-fit ​​component. A lever (9) is installed on one end face of the lever (10).

6. A limb restraint device according to claim 5, characterized in that, The snap-fit ​​assembly includes a snap-fit ​​block (14), which is located in the transverse groove (16). A connecting plate (25) is installed in the lower fixing plate (8). A spring (22) is installed between the snap-fit ​​block (14) and the connecting plate (25). The snap-fit ​​block (14) is slidably fitted in the lower fixing plate (8). A lever (10) is installed on one side of the snap-fit ​​block (14).

7. A limb restraint device according to claim 6, characterized in that, The upper side of the lower fixed plate (8) is provided with a vertical groove (15) that is compatible with the limiting block (17). A storage groove (21) is provided on one side of the vertical groove (15), and a sliding groove is provided on the adjacent side. The lever (10) is slidably engaged in the sliding groove. The connecting plate (25) is installed on one side of the storage groove (21), and the spring (22) is located in the storage groove (21).

8. A limb restraint device according to claim 1, characterized in that, An electric air pump (3) is installed on the upper side of the placement plate (2). Both sides of the electric air pump (3) are connected to air guide pipes. Two air distribution pipes are connected to the side of the air guide pipes. Airbags are installed on the inner side of the upper fixed block (5) and the lower fixed block (6). One end of the two air distribution pipes passes through the upper fixed block (5) and the lower fixed block (6) respectively and is connected to the corresponding airbag.

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