Severe case restraining device for neurology department

Abstract

The invention relates to the technical field of medical instruments, in particular to a neurology severe case restraint device which comprises a bed board, a plurality of supporting legs are fixedly connected to the bottom of the bed board, and a plurality of pushing and clamping assemblies used for fixing upper limbs, a plurality of folding and clamping assemblies used for fixing lower limbs and a plurality of surrounding assemblies used for fixing the body are arranged at the top of the bed board; a telescopic assembly used for adjusting the distance between the pushing and clamping assembly and the folding and clamping assembly is arranged at the bottom of the bed board. The telescopic assembly comprises fixing plates symmetrically and fixedly connected to the bottom of the bed board, first sliding plates are slidably matched with the inner side walls of the fixing plates, and second sliding plates are slidably matched with the inner side walls of the first sliding plates; the clamp pushing assemblies are fixedly connected to the fixing plate, and the clamp collecting assemblies are fixedly connected to the ends, away from the fixing plate, of the second sliding plates. Driving assemblies used for driving the first sliding plates to slide are arranged on the fixing plates. The multi-stage telescopic structure is matched with linkage control of a single driving assembly, and synchronous self-adaptive adjustment of the constraint range of the upper limbs and the lower limbs is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a neurological critical care restraint device. Background Art

[0002] In neurology, some patients may exhibit aggressive or self-harming behaviors due to their illness. In such cases, the use of appropriate restraints can protect patients from harm caused by their own behavior. Existing technologies, such as the APN magnetic restraint system proposed by APN Monte, utilize a magnetic lock design that requires a dedicated key to unlock, preventing patients from breaking free. Multiple magnetic restraint straps secure the patient's limbs.

[0003] While these products can secure a patient's limbs, they lack a dynamic, adaptive adjustment mechanism, making them less safe. Specifically, if a patient suddenly struggles violently or convulses, the restraint device cannot automatically sense and respond. This can lead to overtightening, causing local ischemia, skin compression, and even nerve damage. Conversely, if the restraint is too loose, it may lose its restraining effect, allowing the patient to break free and cause a safety accident.

[0004] In summary, how to solve the problem of lack of dynamic adaptive adjustment mechanism in the existing technology, which makes the safety low, has become a difficult problem that needs to be solved urgently in this field. Therefore, it is necessary to propose a neurological critical care restraint device with dynamic adjustment capability. Summary of the Invention

[0005] In order to solve the above problems, the present invention provides a critical neurological restraint device, which realizes synchronous adaptive adjustment of the restraint range of the upper and lower limbs through a multi-stage telescopic structure and the linkage control of a single drive component; the adjustment is directly completed while maintaining the restraint state, reducing the safety hazards of the operating gap, and at the same time reducing the secondary compression injury of the limbs caused by repeated adjustments, thereby improving the safety of the device.

[0006] In order to achieve the above-mentioned purpose, the technical solution of the present invention is as follows: a critical care restraint device for neurology, comprising a bed board, a plurality of supporting legs fixedly connected to the bottom of the bed board, a plurality of push-clamp assemblies for fixing the upper limbs, a retracting clamp assemblies for fixing the lower limbs and an embracing assembly for fixing the body are provided on the top of the bed board; a telescopic assembly for adjusting the distance between the push-clamp assemblies and the retracting clamp assemblies is provided at the bottom of the bed board.

[0007] The telescopic assembly includes a fixed plate symmetrically fixedly connected to the bottom of the bed board, the inner side walls of the fixed plate are slidably fitted with a first slide, and the inner side walls of the first slide are slidably fitted with a second slide; the pushing and clamping assemblies are fixedly connected to the fixed plate, and the retracting and clamping assemblies are fixedly connected to the end of the second slide away from the fixed plate.

[0008] The fixed plates are each provided with a driving assembly for driving the first slide to slide; the driving assembly is used to drive the second slide to slide synchronously to adjust the distance between the pushing and clamping assembly and the clamping assembly; and drive the pushing and clamping assembly and the clamping assembly to operate synchronously to fix the limb.

[0009] The technical principles of the above solution are as follows:

[0010] Because the fixed plate is fixedly connected to the bottom of the bed, the first slide plate slides in conjunction with the fixed plate, and the second slide plate slides in conjunction with the first slide plate. This allows the first slide plate to slide via the drive assembly, and the first slide in turn simultaneously drives the second slide plate. Since the clamping assemblies are fixedly connected to the second slide plate, the second slide plate can drive the clamping assemblies to move, allowing the spacing of the clamping assemblies to be adjusted to accommodate different body types and improve the adaptability of the device. When the drive assembly is in operation, it simultaneously drives the push-clamp assembly and the clamping assemblies to secure the patient's limbs, increasing the device's practicality. The embracing assembly secures the patient's body, effectively enhancing the restraint device's securement effect.

[0011] The above scheme has the following beneficial effects:

[0012] 1. The present invention realizes synchronous adaptive adjustment of the restraint range of the upper and lower limbs through a multi-stage telescopic structure and the linkage control of a single drive component. Medical staff only need to operate the drive component to make the push-clamp component retract to fix the hands, expand the retracting component inward to fix the legs, or move in the opposite direction. When the telescopic component is used on patients with significant height differences, the restraint range can be quickly adapted without loosening the straps. Adjustment is completed directly while maintaining the restraint state, reducing the safety risks of the operating gap and reducing secondary compression injuries to the limbs caused by repeated adjustments, thereby improving the safety of the device.

[0013] 2. The push-clamp and retractor assemblies of this invention automatically perform restraint actions while adjusting spacing. The push-clamp assembly converts displacement into clamping force, while the retractor assembly converts displacement into locking. When the clamping force exceeds a safe threshold, the force is released, reducing the risk of circulatory impairment or nerve damage caused by excessive pressure. Furthermore, the embracing assembly, through its flexible connection to the bed board, maintains the systemic stability of the full-body restraint, improving the error tolerance of clinical operation.

[0014] 3. This invention uses a single drive source to control each major restraint unit, reducing mechanical complexity and potential failure points. A self-locking mechanism ensures automatic locking after adjustment, without the need for additional power or electrical intervention. The surrounding assembly's cushioning is impact-resistant through a coordinated design of each component, reducing the interference control difficulties associated with traditional electronic restraint systems while also lowering maintenance costs and operator training requirements.

[0015] Furthermore, the driving assembly includes a controller, a rotating member, a screw rod, a nut seat and a transmission belt, the controller is used to control the rotation of the rotating member; the rotating member is fixedly connected to the side of the fixed plate away from the second slide, and the output shaft of the rotating member is coaxially fixedly connected to the screw rod; the nut seat is threadedly engaged with the screw rod, and the nut seat is fixedly connected to the end of the first slide close to the rotating member.

[0016] Both ends of the top of the first skateboard are rotatably connected to rotating wheels, and the transmission belt is tensioned on the outer wall of the rotating wheel; a connecting block is fixedly connected to one side of the transmission belt, and the connecting block is fixedly connected to the side of the second skateboard close to the fixed plate; a transmission component for driving the rotating wheel to rotate is provided on the first skateboard.

[0017] Beneficial Effects: The controller drives the rotating member, which rotates the screw, and the nut seat propels the first slide in a linear motion. Simultaneously, the transmission assembly rotates the rotating wheel, which pulls the second slide via a tensioned transmission belt. A single operation simultaneously expands the upper limb restraint range and contracts the lower limb fixation spacing, adapting to body sizes from pediatric to adult. The self-locking screw drive ensures that the position automatically locks after adjustment, maintaining torso stability.

[0018] Furthermore, the transmission assembly includes a rack fixedly connected to the inner wall of the fixed plate, and the end of the first slide close to the rotating member is also fixedly connected to the outer shell; the end of the rack away from the rotating member passes through the outer shell and is engaged with a driving gear, and the driving gear is coaxially fixedly connected to the main bevel gear; the main bevel gear is engaged with a secondary bevel gear, and the secondary bevel gear is coaxially fixedly connected to the rotating wheel adjacent to the outer shell.

[0019] Beneficial Effects: When the first slide moves, the fixed rack drives the drive gear, which, through the primary and secondary bevel gears, converts the power direction, driving the rotating wheel to pull the drive belt, causing the second slide to automatically slide outward. A single drive source synchronously controls the position adjustment of the push-and-hold assembly to accommodate patients of varying sizes. The self-locking nature of the drive gear engagement reduces the risk of slippage caused by patient struggles. The belt tensioning design maintains a linear trajectory, ensuring precise adjustment of the restraint range.

[0020] Furthermore, the push-clamp assembly includes a connecting plate fixedly connected to the bed board, and a triangular plate is symmetrically hinged on the top of the connecting plate; the top of the triangular plate is hinged to a first clamping plate, the bottom of the first clamping plate is hinged to a first connecting rod, and the bottom end of the first connecting rod is hinged to the top of the connecting plate; a pushing assembly is provided on the connecting plate for driving the triangular plate to rotate.

[0021] Beneficial Effects: The multi-link articulated structure and the push assembly work together to achieve adaptive, flexible clamping for upper limb restraint. When the push assembly rotates the triangular plate, the first splint adaptively closes around the patient's wrist. The multi-hinged design allows the clamping arm to dynamically adjust to the limb's contours, reducing excessive local pressure. Simultaneously, the first link provides restraining force, ensuring a stable, secure clamp. This purely mechanical structure combines force buffering with reliable fixation, helping to reduce the risk of nerve compression and skin damage, and is adaptable to patients with varying wrist circumferences.

[0022] Furthermore, the pushing assembly includes a sliding rod that slides vertically on the connecting plate, and a second connecting rod is symmetrically hinged on the top of the sliding rod, and the top of the second connecting rod is hinged to the bottom end of the triangular plate; a wedge is fixedly connected to the outer wall of the outer shell, and the bottom of the sliding rod is inclined; the wedge is in contact with the inclined surface of the sliding rod.

[0023] Beneficial Effect: When the housing moves with the first slide, the fixed wedge contacts the inclined surface at the bottom of the sliding rod, converting horizontal displacement into vertical lift of the sliding rod. This drives the second connecting rod to rotate the triangular plate, which in turn adaptively closes the patient's wrist. The inclined contact design increases the clamping force linearly with displacement, reducing pressure shock. The multi-articulated structure automatically conforms to the contours of the limb, dispersing pressure and alleviating local ischemia or nerve compression.

[0024] Furthermore, the clamping assembly includes a moving block and a vertical rod fixedly connected to the second slide at one end away from the fixed plate, and a sliding groove for the vertical rod to slide is opened on the bed board; the second splint is symmetrically hinged on the top of the vertical rod, and the third connecting rod is hinged on each of the second splints; the end of the third connecting rod away from the second splint is hinged to the moving block, and a pull wire is fixedly connected to the bottom of the moving block, and the end of the pull wire away from the moving block is fixedly connected to the fixed plate.

[0025] Beneficial Effects: The multi-link mechanism of the pull cable and movable block achieves adaptive tightening and dynamic protection for the lower limb restraint. When the second slide plate slides outward, the pull cable pulls the movable block downward, driving the third link to tighten the second splint and adaptively close it around the ankle joint. The multi-stage articulated structure automatically conforms to the limb contours, ensuring even pressure distribution. Simultaneously, the vertical rod slides in the chute to provide guiding stability. This purely mechanical structure achieves a linear increase in restraint force with displacement, combining rapid response with passive safety, reducing the risk of lower limb nerve damage in agitated patients.

[0026] Furthermore, the embracing assembly includes a number of symmetrically hinged embracing arms on the bed board, and the embracing arms are fixedly connected to the airbag on the side close to the bed board; the bottom of the bed board is also symmetrically fixedly connected to a piston cylinder, and the inner wall of the piston cylinder is slidably fitted with a piston plate; a piston rod is fixedly connected to the piston plate, and the end of the piston rod away from the piston plate passes through the piston cylinder and is fixedly connected to the second slide.

[0027] The side of the piston cylinder away from the piston rod is connected to the input pipe and the output pipe. The connections between the input pipe and the output pipe and the piston cylinder are connected to a one-way valve. The input pipe is connected to the outside of the piston cylinder, and the end of the output pipe away from the piston cylinder is connected to the inside of the airbag.

[0028] Beneficial Effects: When the second slide moves, the piston rod drives the piston plate to compress the gas inside the piston cylinder, directing airflow into the airbag through a one-way valve. Changes in the patient's position automatically trigger the airbag to inflate and deflate, adjusting the embrace strength in real time. This reduces displacement caused by loose restraints while also avoiding respiratory compression caused by tight restraints. The airbag, acting as a flexible medium, converts mechanical pressure into evenly distributed contact force, reducing the risk of pressure ulcers on bony prominences such as the ribs and scapula. Furthermore, the compressibility of the gas absorbs the impact of the patient's struggles, minimizing soft tissue contusions.

[0029] Furthermore, the airbags are all connected to solenoid valves, and the inner walls of the airbags are all fixedly connected to pressure sensors; the controller is used to receive and store pressure information from the pressure sensors, and control the opening and closing of the solenoid valves based on the pressure information.

[0030] Beneficial effects: Intelligent dynamic adjustment of the airbag restraint force is achieved through closed-loop control of the pressure sensor and solenoid valve. The pressure sensor monitors the internal pressure of the airbag in real time and feeds back to the controller. When the pressure exceeds the preset safety range, the controller starts the solenoid valve to deflate and adjust to ensure that the encircling force is within the safety threshold; reducing the risk of pressure sores and respiratory compression.

[0031] Furthermore, a blood oxygen sensor and a heart rate sensor are fixedly connected to the side of the airbag close to the limb; the controller is used to receive and store the blood oxygen information sent by the blood oxygen sensor and the heart rate information sent by the heart rate sensor.

[0032] Beneficial effects: Vital signs monitoring in restraint status is achieved through airbag-integrated multimodal sensing. The blood oxygen sensor and heart rate sensor are directly attached to the patient's torso skin, and peripheral circulation and cardiovascular data are collected in real time, reducing monitoring distortion caused by compression from traditional restraint belts. The controller synchronously analyzes physiological parameters and airbag pressure. When the blood oxygen or heart rate is abnormal, the solenoid valve is linked to adjust the embrace strength, reducing respiratory pressure or circulatory disorders, providing closed-loop safety monitoring for agitated high-risk patients, and significantly reducing the risk of restraint-related complications.

[0033] Furthermore, it also includes an intelligent control system for monitoring and adjusting the restraint strength, and the intelligent control system includes the following modules:

[0034] The force adjustment module is used to use a pressure sensor to monitor the pressure distribution information of the restraint part in real time, and is configured with a physiological indicator monitoring unit and a dynamic adjustment execution unit. The physiological indicator monitoring unit is used to continuously collect the patient's heart rate information, blood oxygen information and limb movement data, and transmit the pressure distribution information, heart rate information, blood oxygen information and limb movement data to the monitoring and correction module; the dynamic adjustment execution unit is used to preset a safety threshold and automatically adjust the restraint force.

[0035] The monitoring and correction module is used to integrate pressure distribution information, heart rate information, blood oxygen information and limb activity data; deploy a deep learning correction model to compensate for abnormal data caused by constraints in real time, and automatically correct and output reliable monitoring results if it detects that the constraint interference has distorted the reading; and generate abnormal data change trend reports to warn of the risk of peripheral circulation disorders, and transmit abnormal data reports to the data linkage module.

[0036] The pressure management module is used to integrate the partitioned pressure reduction structure to divide independent functional units, use independent functional units to detect the local pressure range, and adaptively adjust the dynamic dispersion of local pressure in combination with pressure sensor feedback; the pressure management module simultaneously starts the calibration of the monitoring correction module.

[0037] The data linkage module is used to establish a closed-loop feedback mechanism, receive pressure distribution information, heart rate information, blood oxygen information and limb activity data, and dynamically coordinate force adjustment to match physiological data; when a circulatory disorder is detected, force adjustment and local relaxation are triggered.

[0038] Beneficial Effects: Through deep collaboration among multiple modules, closed-loop optimization of restraint safety and physiological monitoring is achieved; the force adjustment module integrates pressure distribution and physiological indicators in real time, dynamically controlling restraint force based on preset thresholds; the monitoring correction module uses a deep learning model to automatically compensate for monitoring distortion caused by restraint interference, outputs reliable data, and warns of circulatory impairment risks; the pressure management module links sensor feedback to dynamically disperse local pressure through partitioned decompression units; and the data linkage module establishes a closed-loop mechanism that immediately triggers local release when circulatory anomalies are detected. This system overcomes the limitations of traditional devices, which struggle to balance restraint force and physiological safety, significantly reducing the risks of pressure sores, nerve damage, and monitoring distortion while ensuring effective fixation.

[0039] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 This is an axonometric diagram of the neurological critical care restraint device of the present invention.

[0041] Figure 2 It is a side view of the neurological critical care restraint device of the present invention.

[0042] Figure 3 This is an axonometric view of the telescopic assembly in the neurological critical care restraint device of the present invention.

[0043] Figure 4 It is a side view of the pushing component in the neurological critical care restraint device of the present invention.

[0044] Figure 5 It is a cross-sectional view of the transmission assembly in the neurological critical care restraint device of the present invention.

[0045] Figure 6 It is a cross-sectional view of the piston cylinder in the neurological critical care restraint device of the present invention.

[0046] Figure 7 For the present invention Figure 1 Enlarged view of part A.

[0047] Figure 8 For the present invention Figure 1 Magnified view of part B.

[0048] Figure 9 This is a structural block diagram of the intelligent control system in the neurological critical care restraint device of the present invention.

[0049] The figure marks in the drawings of the specification include: 1, bed board; 2, fixed plate; 3, first slide; 4, second slide; 5, rotating part; 6, screw rod; 7, nut seat; 8, transmission belt; 9, rotating wheel; 10, connecting block; 11, rack; 12, housing; 13, driving gear; 14, main bevel gear; 15, secondary bevel gear; 16, connecting plate; 17, triangular plate; 18, first splint; 19, first connecting rod; 20, sliding rod; 21, second connecting rod; 22, wedge block; 23, moving block; 24, vertical rod; 25, second splint; 26, third connecting rod; 27, encircling arm; 28, airbag; 29, piston cylinder; 30, piston plate; 31, piston rod. DETAILED DESCRIPTION

[0050] The following is further described in detail through specific implementation methods:

[0051] Example 1:

[0052] As attached Figure 1 and Figure 2 Shown: A critical care restraint device for neurology, comprising a bed board 1, with a plurality of supporting legs fixedly connected by bolts at the bottom of the bed board 1, a plurality of push-clamp assemblies for fixing the upper limbs, a retracting clamping assembly for fixing the lower limbs, and an embracing assembly for fixing the body provided on the top of the bed board 1; a telescopic assembly for adjusting the spacing between the push-clamping assembly and the retracting clamping assembly is provided at the bottom of the bed board 1.

[0053] Combine Figure 3As shown, the telescopic assembly includes a fixed plate 2 symmetrically fixedly connected to the bottom of the bed board 1 by bolts, the inner side walls of the fixed plate 2 are slidably fitted with a first slide plate 3, and the inner side walls of the first slide plate 3 are slidably fitted with a second slide plate 4; the pushing and clamping assemblies are all fixedly connected to the fixed plate 2 by screws, and the retracting and clamping assemblies are all fixedly connected to the end of the second slide plate 4 away from the fixed plate 2 by screws.

[0054] The fixed plate 2 is provided with a driving assembly for driving the first slide plate 3 to slide; the driving assembly is used to drive the second slide plate 4 to slide synchronously to adjust the distance between the pushing and clamping assembly and the retracting assembly; and drive the pushing and clamping assembly and the retracting assembly to run synchronously to fix the limb.

[0055] The driving assembly includes a controller, a rotating member 5, a screw rod 6, a nut seat 7 and a transmission belt 8. In this embodiment, the rotating member 5 is a motor; the controller is used to control the rotation of the rotating member 5; the rotating member 5 is bolted and fixedly connected to the side of the fixed plate 2 away from the second slide 4, and the output shaft of the rotating member 5 is coaxially fixedly connected to the screw rod 6 through a coupling; the nut seat 7 is threadedly fitted on the screw rod 6, and the nut seat 7 is screwed and fixedly connected to the end of the first slide 3 close to the rotating member 5.

[0056] Both ends of the top of the first skateboard 3 are rotatably connected to rotating wheels 9, and the transmission belt 8 is tensioned on the outer wall of the rotating wheel 9; a connecting block 10 is fixedly connected to one side of the transmission belt 8 by screws, and the connecting block 10 is fixedly connected to the side of the second skateboard 4 close to the fixed plate 2 by screws; a transmission component for driving the rotating wheel 9 to rotate is provided on the first skateboard 3.

[0057] Combine Figure 5 As shown, the transmission assembly includes a rack 11 fixedly connected to the inner wall of the fixed plate 2 by screws, and the end of the first slide 3 close to the rotating member 5 is also fixedly connected to the housing 12 by screws; the end of the rack 11 away from the rotating member 5 passes through the housing 12 and is engaged with a driving gear 13, and the driving gear 13 is coaxially fixedly connected to the main bevel gear 14; the main bevel gear 14 is engaged with a secondary bevel gear 15, and the secondary bevel gear 15 is coaxially fixedly connected to the rotating wheel 9 adjacent to the housing 12.

[0058] Specifically, Figure 3 For example, the controller drives the rotating member 5 (such as a motor) to rotate, and the output shaft of the rotating member 5 drives the screw 6 to rotate synchronously, and the nut seat 7 (threaded with the screw 6) moves linearly along the axial direction of the screw 6; the first slide 3 is pushed to slide away from the fixed plate 2. In this embodiment, the sliding fit between the first slide 3 and the fixed plate 2 can provide a limit for the first slide 3, so that the first slide 3 maintains a linear movement trajectory. When the first slide 3 moves, it drives the housing 12 to move synchronously, and the rack 11 fixed to the inner wall of the fixed plate 2 drives the drive gear 13 engaged therewith to rotate. The drive gear 13 coaxially drives the main bevel gear 14 to rotate, and the power direction is converted by the meshing secondary bevel gear 15, ultimately driving the rotating wheel 9 coaxial with the secondary bevel gear 15 to rotate.

[0059] As the rotating wheel 9 rotates, the transmission belt 8, tensioned on it, rotates synchronously, converting its rotational force into linear movement of the connecting block 10. This pulls the second slide 4 through the connecting block 10, causing it to slide rightward along the groove of the first slide 3, thereby sliding out of the first slide 3. The retracting clamp assembly (fixed to the end of the second slide 4) moves with the second slide 4, increasing the distance between it and the pushing clamp assembly to accommodate different body shapes and heights. The self-locking nature of the screw 6 transmission prevents the patient from struggling and causing displacement and retreat; the tensioned design of the transmission belt 8 ensures the linear movement of the second slide 4, preventing deviation or slippage.

[0060] Combine Figure 7 As shown, the push-clamp assembly includes a connecting plate 16 fixedly connected to the bed board 1 by screws, and a triangular plate 17 is symmetrically hinged on the top of the connecting plate 16; the top of the triangular plate 17 is hinged to a first clamping plate 18, and the bottom of the first clamping plate 18 is hinged to a first connecting rod 19, and the bottom end of the first connecting rod 19 is hinged to the top of the connecting plate 16; a pushing assembly is provided on the connecting plate 16 for driving the triangular plate 17 to rotate.

[0061] Combine Figure 4 As shown, the pushing assembly includes a sliding rod 20 that slides vertically on the connecting plate 16, and a second connecting rod 21 is symmetrically hinged on the top of the sliding rod 20, and the top of the second connecting rod 21 is hinged to the bottom end of the triangular plate 17; a wedge block 22 is fixedly connected to the outer wall of the outer shell 12 by screws, and the bottom of the sliding rod 20 is inclined; the wedge block 22 is in contact with the inclined surface of the sliding rod 20.

[0062] Specifically, when the first slide plate 3 moves and drives the housing 12 to slide horizontally, the wedge block 22 fixed to the outer wall of the housing 12 moves synchronously. The wedge block 22 contacts the bottom inclined surface of the sliding rod 20, decomposing the horizontal thrust into a vertical component force, pushing the sliding rod 20 to lift upward along the vertical slide groove of the connecting plate 16. Figure 7 For example, when the sliding rod 20 is lifted, the second connecting rod 21, symmetrically hinged at the top, pushes the bottom end of the set plate 17 to rotate about the hinge point. The top end of the set plate 17 pulls the first clamping plate 18 toward the center, while the first connecting rod 19 at the bottom of the first clamping plate 18 moves with it, forming a parallelogram constraint mechanism to ensure a stable clamping trajectory.

[0063] The inner side of the first splint 18 automatically conforms to the contours of the patient's wrist (e.g., an arc-shaped wrap) as the angle of contraction changes. The multi-hinged structure evenly distributes the clamping force. The angled design of the wedge block 22 increases the clamping force linearly with displacement (e.g., 1mm of displacement corresponds to a 2N increase in pressure). When the housing 12 stops moving, the wedge block 22 and the inclined surface of the sliding rod 20 self-lock and secure, maintaining the clamping state. When the housing 12 moves in the opposite direction, the wedge block 22 disengages, the sliding rod 20 returns to its original position due to gravity, and the first splint 18 automatically releases its grip, releasing the grip on the limb.

[0064] Combine Figure 8As shown, the clamping assembly includes a movable block 23 and a vertical rod 24 screwed to the end of the second slide 4 away from the fixed plate 2. A slot is provided on the bed plate 1 for the vertical rod 24 to slide. A second clamping plate 25 is symmetrically hinged to the top of the vertical rod 24, and a third connecting rod 26 is hinged to each of the second clamping plates 25. The ends of the third connecting rods 26 away from the second clamping plates 25 are hinged to the movable block 23. A tension wire is fixedly bonded to the bottom of the movable block 23, and the end of the tension wire away from the movable block 23 is fixedly bonded to the fixed plate 2. In this embodiment, the tension wire is tensioned on the outer wall of the vertical rod 24, and is gradually tightened as the second slide 4 moves. A buffer layer is fixedly bonded to both the first clamping plate 18 and the second clamping plate 25, and the buffer layer is preferably made of rubber material.

[0065] Specifically, the second slide plate 4 slides outward (e.g., toward the foot of the bed), driving the vertical rod 24 attached to it to slide synchronously along the grooves of the bed board 1. As the vertical rod 24 moves, the tension wire attached to the fixed plate 2 is tightened, pulling the movable block 23 downward. As the movable block 23 moves downward, it pulls the third connecting rod 26, to which it is hinged, to rotate about the hinge point of the second splint 25. The third connecting rod 26 pulls the second splint 25 toward the center, conforming to the contours of the patient's ankle joint, forming a circular restraint.

[0066] The hinge point of the second splint 25 and the third connecting rod 26 automatically adjusts its angle with the curvature of the limb to evenly distribute the pressure; the vertical rod 24 slides in the chute to maintain its linear motion trajectory to prevent the joint from twisting or deflecting. In this embodiment, the displacement of the pull wire is linearly related to the retraction angle of the second splint 25 (such as the second slide 4 is displaced 10mm, the splint is retracted 15°, and the pressure increases by 20N). The greater the height and body size, the more stable the clamping force and fixing force. When the second slide 4 slides inward, the pull wire relaxes, the moving block 23 becomes loose, and the third connecting rod 26 cancels the tension fixation on the second splint 25, canceling the clamping of the limb.

[0067] Combine Figure 6 As shown, the embracing assembly includes a number of symmetrically hinged embracing arms 27 on the bed board 1, and the embracing arms 27 are fixedly bonded with air bags 28 on the side close to the bed board; the bottom of the bed board 1 is also symmetrically bolted with a piston cylinder 29, and the inner wall of the piston cylinder 29 is slidably fitted with a piston plate 30; a piston rod 31 is fixedly bonded to the piston plate 30, and the end of the piston rod 31 away from the piston plate 30 passes through the piston cylinder 29 and is fixedly connected to the second slide plate 4 by screws.

[0068] The side of the piston cylinder 29 away from the piston rod 31 is connected to the input pipe and the output pipe. The connection between the input pipe and the output pipe and the piston cylinder 29 is connected to a one-way valve. In this embodiment, the one-way valve is used to guide the one-way flow of the medium; the input pipe is connected to the outside of the piston cylinder 29, and the end of the output pipe away from the piston cylinder 29 is connected to the inside of the airbag 28.

[0069] Specifically, the second slide plate 4 slides outward (such as moving toward the end of the bed), driving the piston rod 31 fixed thereto to move synchronously; the piston rod 31 pushes the piston plate 30 to compress inward in the piston cylinder 29, reducing the volume inside the cylinder. When the piston plate 30 is compressed inward, gas is input into the airbag 28 in one direction through the output tube; the continuous injection of gas causes the airbag 28 to expand, and the encircling arm 27 is tightened toward the patient's torso, thereby increasing the restraint force. When the second slide plate 4 slides inward (such as moving toward the head of the bed), the piston rod 31 pulls the piston plate 30 outward; the volume inside the piston cylinder 29 increases to form a negative pressure, and external gas is replenished into the piston cylinder 29 through the input tube; in this embodiment, gas is preferentially filled into the interior of the piston cylinder 29 before limb fixation.

[0070] The specific implementation process is as follows:

[0071] Before being fixed, the patient is placed supinely on the bed board 1, and the patient's limbs are placed on the corresponding components. The controller starts the rotation of the rotating member 5 (motor), which drives the screw 6 to rotate synchronously. The nut seat 7 moves axially along the screw 6, pushing the first slide 3 to slide away from the fixed plate 2 (such as to the right). The first slide 3 drives the housing 12 to move synchronously, and the rack 11 fixed to the fixed plate 2 drives the drive gear 13 to rotate. The drive gear 13 coaxially drives the main bevel gear 14, which converts the power direction through the meshing secondary bevel gear 15, driving the rotating wheel 9 to rotate. The transmission belt 8 rotates with the rotating wheel 9 and pulls the connecting block 10 to pull the second slide 4 outward, thereby adjusting the distance between the first clamping plate 18 and the second clamping plate 25 to accommodate the clamping needs of different body shapes.

[0072] As the housing 12 moves, the wedge 22 on its outer wall contacts the bottom slope of the sliding rod 20, converting the horizontal thrust into a vertical lift. The sliding rod 20 rises vertically along the connecting plate 16, pushing the second connecting rod 21 to rotate the triangular plate 17. The triangular plate 17 pulls the first clamping plate 18 toward the center, and the first connecting rod 19 constrains the trajectory to form a parallelogram mechanism. The first clamping plate 18 adaptively conforms to the contours of the patient's wrist, and the clamping force increases linearly with displacement. As the second slide 4 moves outward, the vertical rod 24 slides along the groove of the bed board 1. The tension wire is tightened, pulling the movable block 23 downward. The movable block 23 pulls the third connecting rod 26, driving the second clamping plate 25 to close around the ankle joint.

[0073] When the second slide plate 4 moves outward, the piston rod 31 pushes the piston plate 30 to compress the piston cylinder 29; the output pipe one-way valve opens, the gas input airbag 28 expands, and the encircling arm 27 is further tightened; when the second slide plate 4 moves inward, the piston rod 31 is pulled outward, negative pressure is generated inside the piston cylinder 29, the input pipe one-way valve opens, and external gas is replenished into the piston cylinder 29.

[0074] This embodiment uses a single motor to drive the adjustment of the restraint range of various parts of the body (upper limb fixation, lower limb clamping and torso strength adaptation). The horizontal slide displacement is converted into the adjustment of the upper limb clamping force, the lower limb retraction angle and the torso airbag 28 pressure through the inclined surface of the wedge block 22, the pull wire traction and the pneumatic piston, thereby improving the restraint effect on the limbs.

[0075] Example 2:

[0076] The difference from the above embodiment is that the airbag 28 is connected to a solenoid valve, and the inner wall of the airbag 28 is fixedly bonded with a pressure sensor; the controller is used to receive and store pressure information from the pressure sensor, and control the opening and closing of the solenoid valve based on the pressure information.

[0077] The specific implementation process is as follows: Through the closed-loop control of the pressure sensor and the solenoid valve, the restraint force of the airbag 28 is intelligently and dynamically adjusted. The pressure sensor monitors the internal pressure of the airbag 28 in real time and feeds back to the controller. When the pressure exceeds the preset safety range, the controller starts the solenoid valve to deflate and adjust to ensure that the embracing force is within the safety threshold; reducing the risk of pressure sores and respiratory compression.

[0078] Example 3:

[0079] The difference from the above embodiment is that a blood oxygen sensor and a heart rate sensor are fixedly bonded to the side of the airbag 28 close to the limb; the controller is used to receive and store the blood oxygen information sent by the blood oxygen sensor and the heart rate information sent by the heart rate sensor.

[0080] The specific implementation process is as follows: Vital signs monitoring in the restraint state is achieved through the integrated multimodal sensing of the airbag 28. The blood oxygen sensor and heart rate sensor are directly attached to the patient's torso skin to collect peripheral circulation and cardiovascular data in real time, reducing the monitoring distortion caused by the compression of the traditional restraint belt; the controller synchronously analyzes physiological parameters and the pressure of the airbag 28. When the blood oxygen or heart rate is abnormal, the solenoid valve is linked to adjust the embrace force to reduce respiratory pressure or circulatory disorders, provide closed-loop safety monitoring for agitated high-risk patients, and significantly reduce the risk of restraint-related complications.

[0081] Example 4:

[0082] As attached Figure 9 As shown, the difference from the above embodiment is that this embodiment also provides an intelligent control system for monitoring and adjusting the restraint force, and the intelligent control system includes a force adjustment module for adjusting the restraint force, a monitoring correction module for correcting the monitoring data, a pressure management module for dividing the pressure zones, and a data linkage module for linking various data.

[0083] The functions of each module are as follows:

[0084] The force adjustment module uses pressure sensors to monitor the pressure distribution of the restraint area in real time. It is equipped with a physiological indicator monitoring unit (heart rate sensor and blood oxygen sensor) and a dynamic adjustment execution unit. The physiological indicator monitoring unit continuously collects the patient's heart rate, blood oxygen, and limb movement data, and transmits this pressure distribution, heart rate, blood oxygen, and limb movement data to the monitoring and correction module. The dynamic adjustment execution unit presets a safety threshold and automatically adjusts the restraint force. In this embodiment, the dynamic adjustment execution unit analyzes individual patient differences (such as body shape and skin sensitivity) and real-time physiological status to dynamically generate a restraint force plan to avoid over-extension that may lead to escape or over-tightening that may cause pressure injuries.

[0085] The monitoring and correction module integrates pressure distribution information, heart rate information, blood oxygen information, and limb movement data. It deploys a deep learning correction model to compensate for abnormal data caused by constraints in real time. If it detects that the constraint interference has distorted the reading, it automatically corrects and outputs reliable monitoring results. It also generates reports on abnormal data trends, alerting users of peripheral circulatory impairment risks, and transmits these reports to the data linkage module. In this embodiment, the deep learning correction model uses a 1D-CNN+LSTM network. The model inputs the original blood oxygen waveform, limb movement spectrum, and pressure gradient; the compensated true blood oxygen value and peripheral circulatory risk assessment index are then generated.

[0086] The pressure management module integrates the zoned pressure relief structure into independent functional units. These units detect local pressure ranges and, combined with pressure sensor feedback, adaptively adjust the dynamic dispersion of these pressures. For example, high-pressure areas automatically enhance elastic support to reduce local pressure, while low-pressure areas maintain basic restraint to ensure overall stability. The pressure management module also simultaneously initiates calibration of the monitoring and correction module.

[0087] The data linkage module establishes a closed-loop feedback mechanism, receiving information on pressure distribution, heart rate, blood oxygen levels, and limb movement, dynamically coordinating force adjustments to match physiological data. When circulatory disturbances are detected, force-adjusted local release is triggered. For example, if local pressure exceeds 45 mmHg, the airbag 28 in the corresponding area is decompressed and the corresponding splint is slightly loosened. If blood oxygen levels drop below 90% for 10 seconds, the splint is released to a safe threshold and an emergency call is initiated.

[0088] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will readily appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A neurological critical care restraint device, comprising a bed board (1), the bottom of which is fixedly connected to a plurality of support legs, characterized in that: The top of the bed board (1) is provided with a plurality of push-clamp assemblies for fixing the upper limbs, a retracting clamp assemblies for fixing the lower limbs, and an embracing assembly for fixing the body; the bottom of the bed board (1) is provided with a telescopic assembly for adjusting the distance between the push-clamp assemblies and the retracting clamp assemblies; The telescopic assembly comprises a fixed plate (2) symmetrically fixedly connected to the bottom of the bed board (1); the inner side wall of the fixed plate (2) is slidably matched with a first slide plate (3); the inner side wall of the first slide plate (3) is slidably matched with a second slide plate (4); the pushing and clamping assemblies are fixedly connected to the fixed plate (2); and the retracting and clamping assemblies are fixedly connected to an end of the second slide plate (4) away from the fixed plate (2); The fixed plate (2) is provided with a driving assembly for driving the first slide plate (3) to slide; the driving assembly is used to drive the second slide plate (4) to slide synchronously to adjust the distance between the pushing and clamping assembly and the retracting and clamping assembly; The pushing and clamping components and the retracting and clamping components are driven to operate synchronously to fix the limbs.

2. The neurological critical care restraint device according to claim 1, characterized in that: The driving assembly comprises a controller, a rotating member (5), a screw rod (6), a nut seat (7) and a transmission belt (8), wherein the controller is used to control the rotating member (5) to rotate; the rotating member (5) is fixedly connected to a side of the fixed plate (2) away from the second slide plate (4), and the output shaft of the rotating member (5) is coaxially fixedly connected to the screw rod (6); the nut seat (7) is threadedly engaged with the screw rod (6), and the nut seat (7) is fixedly connected to an end of the first slide plate (3) close to the rotating member (5); Both ends of the top of the first slide plate (3) are rotatably connected to rotating wheels (9), and a transmission belt (8) is tensioned on the outer wall of the rotating wheel (9); a connecting block (10) is fixedly connected to one side of the transmission belt (8), and the connecting block (10) is fixedly connected to a side of the second slide plate (4) close to the fixed plate (2); The first slide plate (3) is provided with a transmission assembly for driving the rotating wheel (9) to rotate.

3. The neurological critical care restraint device according to claim 2, characterized in that: The transmission assembly comprises a rack (11) fixedly connected to the inner wall of the fixed plate (2); an end of the first slide plate (3) close to the rotating member (5) is also fixedly connected to the housing (12); an end of the rack (11) away from the rotating member (5) passes through the housing (12) and is meshed with a driving gear (13); the driving gear (13) is coaxially fixedly connected to a main bevel gear (14); the main bevel gear (14) is meshed with a secondary bevel gear (15), and the secondary bevel gear (15) is coaxially fixedly connected to a rotating wheel (9) adjacent to the housing (12).

4. The neurological critical care restraint device according to claim 3, characterized in that: The push-clamp assembly comprises a connecting plate (16) fixedly connected to the bed board (1), the top of the connecting plate (16) is symmetrically hinged with a triangular plate (17); the top of the triangular plate (17) is hinged with a first clamping plate (18), the bottom of the first clamping plate (18) is hinged with a first connecting rod (19), and the bottom end of the first connecting rod (19) is hinged with the top of the connecting plate (16); The connecting plate (16) is provided with a pushing assembly for driving the triangular plate (17) to rotate.

5. The neurological critical care restraint device according to claim 4, characterized in that: The pushing assembly includes a sliding rod (20) vertically slidingly fitted on the connecting plate (16); a second connecting rod (21) is symmetrically hinged on the top of the sliding rod (20); the top of the second connecting rod (21) is hinged to the bottom end of the triangular plate (17); a wedge block (22) is fixedly connected to the outer wall of the housing (12); the bottom of the sliding rod (20) is inclined; the wedge block (22) contacts the inclined surface of the sliding rod (20).

6. The neurological critical care restraint device according to claim 5, characterized in that: The clamping assembly comprises a moving block (23) and a vertical rod (24) fixedly connected to the end of the second slide plate (4) away from the fixed plate (2); a sliding groove for the vertical rod (24) to slide is provided on the bed plate (1); a second clamping plate (25) is symmetrically hinged on the top of the vertical rod (24), and a third connecting rod (26) is hinged on the second clamping plate (25); the end of the third connecting rod (26) away from the second clamping plate (25) is hinged to the moving block (23), and a pull wire is fixedly connected to the bottom of the moving block (23), and the end of the pull wire away from the moving block (23) is fixedly connected to the fixed plate (2).

7. The neurological critical care restraint device according to claim 6, characterized in that: The embracing assembly comprises a plurality of symmetrically hinged embracing arms (27) on the bed board (1), wherein the embracing arms (27) are fixedly connected to the airbag (28) on the side close to the bed board (1); the bottom of the bed board (1) is also symmetrically fixedly connected to a piston cylinder (29), and the inner wall of the piston cylinder (29) is slidably matched with a piston plate (30); a piston rod (31) is fixedly connected to the piston plate (30), and the end of the piston rod (31) away from the piston plate (30) passes through the piston cylinder (29) and is fixedly connected to the second slide plate (4); The side of the piston cylinder (29) away from the piston rod (31) is connected to the input pipe and the output pipe. The connection points of the input pipe and the output pipe with the piston cylinder (29) are both connected to a one-way valve. The input pipe is connected to the outside of the piston cylinder (29), and the end of the output pipe away from the piston cylinder (29) is connected to the inside of the air bag (28).

8. The neurological critical care restraint device according to claim 7, characterized in that: The airbags (28) are all connected to electromagnetic valves, and the inner walls of the airbags (28) are all fixedly connected to pressure sensors; the controller is used to receive and store pressure information from the pressure sensors, and control the opening and closing of the electromagnetic valves based on the pressure information.

9. The neurological critical care restraint device according to claim 8, characterized in that: The air bag (28) is also fixedly connected to a blood oxygen sensor and a heart rate sensor on one side close to the limb; the controller is used to receive and store the blood oxygen information sent by the blood oxygen sensor and the heart rate information sent by the heart rate sensor.

10. The neurological critical care restraint device according to claim 9, characterized in that: It also includes an intelligent control system for monitoring and adjusting the restraint force, which includes the following modules: A force adjustment module is used to monitor the pressure distribution information of the restraint part in real time using a pressure sensor, and is equipped with a physiological indicator monitoring unit and a dynamic adjustment execution unit. The physiological indicator monitoring unit continuously collects the patient's heart rate information, blood oxygen information, and limb movement data, and transmits the pressure distribution information, heart rate information, blood oxygen information, and limb movement data to the monitoring and correction module; Use the dynamic adjustment execution unit to preset the safety threshold and automatically adjust the restraint force; The monitoring and correction module integrates pressure distribution information, heart rate information, blood oxygen information, and limb movement data. It deploys a deep learning correction model to compensate for abnormal data caused by constraints in real time. If it detects that the constraint interference has distorted the reading, it will automatically correct and output reliable monitoring results. It also generates abnormal data change trend reports, warns of peripheral circulation disorder risks, and transmits abnormal data reports to the data linkage module; The pressure management module is used to integrate the partitioned pressure reduction structure to divide the independent functional units, use the independent functional units to detect the local pressure range, and adaptively adjust the dynamic dispersion of the local pressure in combination with the pressure sensor feedback; The pressure management module simultaneously starts the calibration of the monitoring and correction module; The data linkage module is used to establish a closed-loop feedback mechanism, receive pressure distribution information, heart rate information, blood oxygen information and limb movement data, and dynamically coordinate force adjustment to match physiological data; Force-modulated local release is triggered when circulatory impairment is detected.

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