Neck immobilization device for cervical spine injury patients

Abstract

This invention discloses a neck restraint device for patients with cervical spine injuries, specifically relating to the field of medical device technology. It includes a limiting member and a second limiting plate that form a neck-accommodating space by closing and enclosing the neck. The upper sides of the second limiting plate are provided with cheek rotation restraint modules, including a limiting plate, a movable plate movably disposed inside the limiting plate, and a second sensing unit. An arc-shaped resistance plate is fixed to the side of the movable plate facing the cheek, used to gather soft tissue to trigger the second sensing unit when the cheek deflects. The bottom of the second limiting plate is provided with a body rotation early warning module, including a shaped flexible plate and a third sensing unit installed inside it. The shaped flexible plate has straps at both ends that are fixed to the patient's shoulders, used to trigger the third sensing unit when the body deforms during turning. This invention can physically block conscious head turning and utilize arc-shaped resistance to trigger sensing, while simultaneously providing early warning through body turning prediction, effectively reducing the risk of secondary cervical spine injury.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and more specifically, to a neck restraint device for patients with cervical spine injuries. Background Technology

[0002] The core purpose of cervical restraint devices (commonly known as neck braces) for patients with cervical spine injuries is to immobilize, stabilize, decompress, and prevent secondary injury. Existing cervical restraint devices for cervical spine injuries mostly use two rigid resin frames (front and rear) with an inner liner for secure binding, offering advantages such as reliable support and easy assembly / disassembly. These devices rely on the enclosure of the shell to restrain the neck, providing a certain degree of limitation on cervical flexion-extension and lateral torsion. Adult patients generally have good compliance and can independently control the range of head movement; this structure can meet daily immobilization needs.

[0003] However, the existing solutions have a problem: the design logic of current neck braces is based on the premise that the patient's head can turn voluntarily while awake, relying on restricting direct head rotation to achieve protection. Clinical findings show that when young children turn over in bed at night, their movement patterns are fundamentally different from when they are awake. Specifically, the trunk rolls to the side first, and then the head is passively dragged and twisted; it is not the case that the head turns actively first. Therefore, the current restraint structures lack a constraint pattern that adapts to the linkage between the body and head, making the neck easily dragged to a dangerous twisting angle unconsciously when turning over at night, causing secondary injury.

[0004] Therefore, this invention proposes a neck restraint device for patients with cervical spine injuries to solve the problem of passive dragging and twisting of the head caused by the trunk turning over first in young children. It achieves cervical spine restraint protection covering all scenarios of wakefulness and sleep, and effectively reduces the risk of secondary cervical spine injury. Summary of the Invention

[0005] In order to overcome the above-mentioned defects of the prior art, embodiments of the present invention provide a neck restraint device for patients with cervical spine injuries to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a cervical restraint device for patients with cervical spine injuries, comprising: a limiting member and a second limiting plate, wherein the limiting member and the second limiting plate are engaged and enclosed to form a cervical accommodating space. The second limiting plate is provided with cheek rotation limiting modules on both sides above it. The cheek rotation limiting module includes: a limiting plate fixedly installed on the top of the second limiting plate, a movable plate movably disposed inside the limiting plate, and a second sensing unit disposed between the limiting plate and the movable plate. A resistance increasing plate is fixedly connected to the side of the movable plate facing the patient's cheek, and the side of the resistance increasing plate facing away from the movable plate is an arc surface. The bottom of the second limiting plate is provided with a body rotation early warning module. The body rotation early warning module includes a shaped flexible plate and a third sensing unit. Both ends of the shaped flexible plate are provided with tightening straps for fixing to the patient's shoulders. The third sensing unit is installed on the inner side of the shaped flexible plate.

[0007] Specifically, the physical barrier of the limiting plate restricts the child's head from actively turning at an extreme angle from a structural level; the arc-shaped resistance plate gathers and stacks the facial soft tissue and presses against the moving plate when the child's cheeks turn, ensuring that the second sensing unit is effectively triggered and avoiding the problem of the child's facial soft tissue slipping along the surface of the limiting plate, which would cause the sensing to fail; the shaped flexible plate deforms as the body rolls over and squeezes the third sensing unit, enabling early prediction and warning of the trunk rolling over first.

[0008] Furthermore, a second spring is provided between the moving plate and the limiting plate. One end of the second spring is fixedly connected to the moving plate, and the other end of the second spring is fixedly connected to the limiting plate, so that when the external force of cheek deflection disappears, the moving plate automatically returns to the initial position under the elastic force of the second spring, enabling the cheek rotation limiting module to have the ability to repeatedly trigger detection.

[0009] Furthermore, the shaping flexible plate is an arc-shaped plate structure that bends inward, so that the arc-shaped bending structure can be adapted to the curve of the human shoulder, improving the fit and comfort of wearing, while concentrating the deformation of the shaping flexible plate in the central area when the body turns over, thereby improving the deformation acquisition sensitivity of the third sensing unit.

[0010] Furthermore, the body rotation warning module also includes a connecting plate, a rotating sleeve, and a threaded shaft. One end of the connecting plate is fixedly connected to the shaped flexible plate, and the other end of the connecting plate is fixedly connected to the rotating sleeve. One end of the threaded shaft is threadedly connected to the rotating sleeve, and the other end of the threaded shaft is fixedly connected to the second limiting plate. This allows for a detachable connection between the body rotation warning module and the second limiting plate through the threaded engagement of the rotating sleeve and the threaded shaft. It also enables disassembly for weight reduction and quick reassembly for use, allowing for on-demand assembly.

[0011] Furthermore, the limiting component includes a first limiting plate and a tightening strap. The tightening strap is disposed on both sides of the first limiting plate and is detachably and fixedly connected to the second limiting plate, so that the limiting component and the second limiting plate can be quickly put on and fixed through the tightening strap. The operation is simple and can be adapted to patients with different neck circumference sizes.

[0012] Furthermore, connecting members are fixedly connected to both sides of the first limiting plate, and support plates are rotatably connected to the connecting members. Through the support plates rotatably connected to the connecting members via a rotating shaft, the support plates can be rotated outward around the rotating shaft during sleep, with the ends of the support plates abutting against the bed surface on both sides of the head, thus providing spatial constraint for the patient. During the day, the support plates can be folded and brought closer to the first limiting plate around the rotating shaft, without affecting normal activities. The rotating connection structure is simple and reliable, achieving structural reuse between wearable protective gear and spatial constraint support.

[0013] Furthermore, a sliding cavity is formed at the end of the support plate away from the connector. A sliding block is slidably disposed within the sliding cavity. A compression plate is fixedly connected to one end of the sliding block, and the compression plate extends outside the sliding cavity. A first elastic element is disposed between the other end of the sliding block and the inner wall of the sliding cavity. A first sensing unit is also installed within the sliding cavity. When the child's head twists laterally during sleep, the compression plate on the deflected side experiences increased reaction force from the bed surface, and the sliding block compresses the first elastic element, increasing the pressure detected by the first sensing unit. Conversely, the compression plate on the opposite side moves away from the bed surface, and the first elastic element extends, decreasing the pressure detected by the sensing unit. The increase and decrease in pressure on both sides form a differential signal, enabling accurate detection of the head deflection trend and alarm triggering.

[0014] Furthermore, a magnetic plate is fixedly connected to the sliding block; a matching magnet corresponding to the magnetic plate is fixedly connected to the support plate, the magnetic poles of the magnetic plate and the matching magnet being the same and opposite to each other. The repulsive force between the same magnetic poles of the magnetic plate and the matching magnet provides a stable reference force, keeping the initial positions of the two sliding blocks symmetrical, ensuring that the initial zero point of the difference detection does not drift with changes in the wearing posture of the device, thus improving detection accuracy and long-term stability.

[0015] Furthermore, two sets of rubber blocks are fixedly connected to the inner side of the shaped flexible plate, and the two sets of rubber blocks are arranged opposite to each other. The third sensing unit is clamped and fixed between the two sets of rubber blocks. When the shaped flexible plate deforms, the two sets of rubber blocks move closer together, concentrating the deformation of the flexible plate to the third sensing unit clamped between them. This improves the sensitivity and reliability of deformation signal acquisition. At the same time, the rubber blocks act as a buffer to protect the sensing unit and prevent overload damage.

[0016] Furthermore, a mandibular support platform is fixedly connected to the inner side of the second limiting plate, and the mandibular support platform is located in the middle of the second limiting plate. The mandibular support platform provides stable support for the patient's mandible, making the second limiting plate fit more firmly against the neck, improving the overall limiting effect, and aiding in neck rehabilitation.

[0017] The technical effects and advantages of this invention are as follows: 1. Compared to existing neck braces that can only handle active head turning while awake, this new design incorporates cheek rotation limiting modules on both sides above the second limiting plate. These modules physically block the cheeks, structurally restricting large-angle active head turning. The curved surface of the resistance plate facing the cheeks causes facial soft tissue to gather and press against the moving plate during cheek turning, effectively triggering the second sensing unit. This avoids the technical defect of the sensor failing to trigger due to the child's facial soft tissue slipping on the limiting plate surface. Simultaneously, a body rotation warning module at the bottom of the second limiting plate uses a flexible plate that deforms with body turning to compress the third sensing unit, shifting the monitoring point from the head to the shoulders. This allows for early prediction and warning of trunk turning, effectively solving the technical problem of secondary cervical spine injury caused by passive head turning during nighttime.

[0018] 2. Compared with existing technologies, this system incorporates a second spring, enabling the moving plate to automatically reset and repeatedly trigger detection; the body rotation warning module is detachably connected via a threaded connection, facilitating disassembly and assembly as needed; the support plate is connected via a rotating shaft, rotating outwards to abut against the bed surface during sleep to create spatial limitation; a sliding block within the cavity, in conjunction with elastic components and sensors, accurately detects head rotation based on the pressure difference between the two sides; the magnetic plate and the matching magnet have their magnetic poles aligned to ensure the zero point of the difference detection does not drift with the wearing posture; and a rubber block concentrates the deformation transmission to the third sensing unit, improving data acquisition sensitivity. The synergistic effect of these structures achieves a closed-loop protection system covering all scenarios, from active head turning when awake to head deflection during sleep, and even body-first movement during rolling over. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the structure of the limiting component of the present invention; Figure 3 This is a schematic diagram of the cheek rotation limiting module of the present invention; Figure 4 This is a schematic diagram of the body rotation early warning module of the present invention; Figure 5 This is a schematic diagram of the installation structure of the third sensing unit of the present invention.

[0020] The attached figures are labeled as follows: 1. Limiting component; 101. First limiting plate; 102. Tightening band; 103. Support plate; 104. Connecting component; 105. Rotating shaft; 106. Extrusion plate; 107. Sliding block; 108. Magnetic plate; 109. First elastic component; 110. First sensing unit; 2. Second limiting plate; 3. Cheek rotation limiting module; 301. Limiting plate; 302. Groove; 303. Moving plate; 304. Resistance plate; 305. Second spring; 306. Second sensing unit; 307. Early warning unit; 4. Body rotation early warning module; 401. Connecting plate; 402. Rotating sleeve; 403. Threaded shaft; 404. Shaped flexible plate; 405. Tightening band; 406. Rubber block; 407. Third sensing unit; 5. Jaw support platform. 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] Example 1: As Figure 1 and Figure 2 As shown, this embodiment provides a neck restraint device for patients with cervical spine injuries, including a limiting member 1 and a second limiting plate 2.

[0023] The limiting component 1 includes a first limiting plate 101 and a tightening strap 102. The first limiting plate 101 is an arc-shaped plate structure used to fit the back of the patient's neck. The tightening strap 102 is disposed on both sides of the first limiting plate 101, and the free end of the tightening strap 102 is provided with a Velcro hook surface, which is used to cooperate with the corresponding Velcro rough surfaces disposed on both sides of the second limiting plate 2 to realize the detachable and fixed connection between the limiting component 1 and the second limiting plate 2. Connecting components 104 are also fixedly connected to both sides of the first limiting plate 101, and a support plate 103 is rotatably connected to the connecting component 104 via a rotating shaft 105; the support plate 103 is arc-shaped and can rotate relative to the first limiting plate 101 via the rotating shaft 105. During sleep, it rotates outward around the rotating shaft 105, that is, it rotates outward and unfolds so that the end touches the bed surface, and during the day it moves towards the first limiting plate 101 and folds up around the rotating shaft 105.

[0024] The second limiting plate 2 is an arc-shaped plate structure used to conform to the front of the patient's neck. The second limiting plate 2 and the first limiting plate 101 are fitted together to form a neck receiving space. A mandibular support platform 5 is fixedly connected to the wall of the second limiting plate 2 facing the neck receiving space. The mandibular support platform 5 is located in the center of the second limiting plate 2 and is used to provide support for the patient's mandible.

[0025] Cheek rotation limiting modules 3 are provided on both sides above the second limiting plate 2. Please refer to... Figure 3The cheek rotation limiting module 3 includes a limiting plate 301, a movable plate 303, and a second sensing unit 306. The limiting plate 301 is fixedly installed on the top of the second limiting plate 2 and extends towards the patient's cheek. A groove 302 is formed on the side of the limiting plate 301 facing the neck receiving space. The movable plate 303 is movably disposed inside the limiting plate 301, i.e., on the side of the limiting plate 301 facing the neck receiving space, and can reciprocate horizontally under the guidance of the groove 302. The second sensing unit 306 is fixedly installed on the bottom wall of the groove 302, located between the limiting plate 301 and the movable plate 303. A resistance increasing plate 304 is fixedly connected to the side of the movable plate 303 facing the patient's cheek, and the side of the resistance increasing plate 304 facing away from the movable plate 303 is an arc surface. A second spring 305 is provided between the movable plate 303 and the limiting plate 301. One end of the second spring 305 is fixedly connected to the movable plate 303, and the other end is fixedly connected to the bottom wall of the groove 302 of the limiting plate 301. A warning unit 307 is also installed on one side of the limiting plate 301. The warning unit 307 is signal-connected to the second sensing unit 306.

[0026] A body rotation early warning module 4 is provided at the bottom of the second limiting plate 2. Please refer to [link / reference]. Figure 4 The body rotation early warning module 4 includes a shaped flexible plate 404, a connecting plate 401, a rotating sleeve 402, and a threaded shaft 403. The shaped flexible plate 404 is a long, strip-shaped flexible material with a certain bending stiffness, capable of deforming under stress and recovering its shape after the stress is released. Both ends of the shaped flexible plate 404 are fixedly connected to tightening straps 405 for securing the shaped flexible plate 404 to the patient's shoulders or arms. One end of the connecting plate 401 is fixedly connected to the middle of the shaped flexible plate 404, and the other end is fixedly connected to the rotating sleeve 402. The rotating sleeve 402 has internal threads, and one end of the threaded shaft 403 is threadedly connected to the rotating sleeve 402, while the other end is fixedly connected to the bottom of the second limiting plate 2. Rotating the rotating sleeve 402 allows for a detachable connection between the body rotation early warning module 4 and the second limiting plate 2. (See also...) Figure 5 Two sets of rubber blocks 406 are fixedly connected to the inner side of the shaped flexible plate 404. The two sets of rubber blocks 406 are arranged opposite to each other, and the third sensing unit 407 is clamped and fixed between the two sets of rubber blocks 406. The early warning unit 307 is also signal-connected to the third sensing unit 407.

[0027] Working principle: During daytime wear, the limiting member 1 and the second limiting plate 2 are tightened and fixed to the patient's neck by the tightening strap 102, and the chin support platform 5 provides support for the chin. When the child actively turns his head while awake, his cheek contacts the resistance plate 304. The curved surface causes the facial soft tissue to gather and stack, pushing the moving plate 303 to squeeze the second sensing unit 306. The second sensing unit 306 transmits the pressure signal to the early warning unit 307, triggering an audible and visual alarm to remind the caregiver to correct the head posture in time.

[0028] During sleep at night, the support plate 103 is rotated outward via the rotating shaft 105, with the ends of the support plate 103 resting against the bed surface on both sides of the head, forming a floor-mounted spatial constraint for the entire device. When the child turns over first, the ipsilateral flexible plate 404 is stretched and deformed, and the two sets of rubber blocks 406 come closer together, squeezing the third sensing unit 407. The third sensing unit 407 transmits the deformation signal to the early warning unit 307, triggering a remote alarm push to the caregiver's mobile terminal.

[0029] Example 2: The difference between this example and Example 1 is that the specific arrangement of the second spring 305 between the moving plate 303 and the limiting plate 301 is specified. For example... Figure 3 As shown, there are multiple second springs 305 evenly distributed, and each second spring 305 is arranged at equal intervals along the length of the moving plate 303. One end of each second spring 305 is fixedly connected to the side of the moving plate 303 facing the limiting plate 301, and the other end of the second spring 305 is fixedly connected to the bottom wall of the groove 302 of the limiting plate 301.

[0030] In this embodiment, when the child's cheek deflects and presses against the movable plate 303, the second spring 305 is compressed; when the external force of cheek deflection disappears, the movable plate 303 automatically returns to its initial position under the elastic force of the second spring 305. Simultaneously, the second spring 305 provides a certain preload to the movable plate 303, preventing the second sensing unit 306 from being falsely triggered due to slight head movements of the patient, thus improving the reliability and accuracy of the detection.

[0031] Example 3: The difference between this example and Example 1 is that the shaped flexible plate 404 is defined as an inwardly curved arc-shaped plate structure. Inward curvature means that the shaped flexible plate 404 bends towards the patient's body. The curvature of the shaped flexible plate 404 is designed according to the curve of the human shoulder.

[0032] In this embodiment, the arc-shaped bending structure allows the flexible plate 404 to make surface contact with the patient's shoulders and back, improving the fit and stability of the garment. When the patient turns over, the deformation of the flexible plate 404 is concentrated in its central area, and the relative proximity between the two sets of rubber blocks 406 is more significant, thus making the deformation signal collected by the third sensing unit 407 more sensitive and accurate.

[0033] Example 4: The difference between this example and Example 1 lies in the connection method between the body rotation early warning module 4 and the second limiting plate 2. For example... Figure 4As shown, the body rotation warning module 4 includes a connecting plate 401, a rotating sleeve 402, and a threaded shaft 403. One end of the connecting plate 401 is fixedly connected to the middle of the shaped flexible plate 404, and the other end of the connecting plate 401 is fixedly connected to the outer wall of the rotating sleeve 402. The rotating sleeve 402 has a cylindrical structure with internal threads. One end of the threaded shaft 403 has external threads that mate with the internal threads of the rotating sleeve 402, and the other end of the threaded shaft 403 is fixedly connected to the bottom of the second limiting plate 2 or integrally formed. The outer wall of the rotating sleeve 402 also has anti-slip textures for easy hand operation. In use, align the threaded shaft 403 with the inner hole of the rotating sleeve 402, rotate the rotating sleeve 402 to make it threadedly engage with the threaded shaft 403 and tighten it, thus installing the body rotation warning module 4 on the bottom of the second limiting plate 2. To disassemble, simply rotate the rotating sleeve 402 in the opposite direction to separate it.

[0034] In this embodiment, the body rotation warning module 4 is detachably connected through the threaded engagement of the rotating sleeve 402 and the threaded shaft 403. The body rotation warning module 4 can be removed when the patient gets out of bed during the day, reducing the overall weight of the device and facilitating movement; it can be quickly reassembled before sleep at night, enabling on-demand use and improving the adaptability and ease of use of the device.

[0035] Example 5: Figure 2 As shown, the difference between this embodiment and Embodiment 1 lies in the specific structure of the support plate 103. A sliding cavity is provided at the end of the support plate 103 away from the connector 104, extending along the length of the support plate 103. A sliding block 107 is slidably disposed within the sliding cavity, the cross-sectional shape of which matches the cross-sectional shape of the sliding cavity, for example, the cross-sectional shape of the sliding block 107 is rectangular, ensuring that the sliding block 107 can only slide back and forth along the length of the sliding cavity.

[0036] A pressing plate 106 is fixedly connected to one end of the sliding block 107 facing the end opening of the support plate 103, and the pressing plate 106 extends outside the sliding cavity. The end face of the pressing plate 106 is flat or curved, for contacting the bed surface. A first elastic element 109 is provided between the end of the sliding block 107 facing the inside of the support plate 103 and the inner wall of the sliding cavity. The first elastic element 109 is preferably a compression spring. One end of the first elastic element 109 is fixedly connected to the sliding block 107, and the other end of the first elastic element 109 is fixedly connected to the inner wall of the sliding cavity. A first sensing unit 110 is also installed inside the sliding cavity. The first sensing unit 110 is fixed to the bottom of the sliding cavity and is used to detect the sliding displacement or pressure of the sliding block 107.

[0037] The sliding block 107 is also fixedly connected to a magnetic plate 108; the support plate 103 is fixedly connected to a matching magnet corresponding to the magnetic plate 108. The magnetic poles of the magnetic plate 108 and the magnetic poles of the matching magnet are the same and opposite to each other, and the same magnetic poles repel each other to provide a stable reference force.

[0038] In this embodiment, during sleep, the two support plates 103 are rotated outward around the rotation axis 105, i.e., unfolded outward to rest against the bed surface. When the child's head twists laterally during sleep, the pressure plate 106 on the side of the head's rotation experiences increased reaction force from the bed surface, pushing the sliding block 107 into the sliding cavity, compressing the first elastic element 109 and bringing the magnetic plate 108 closer to the mating magnet. This causes the like magnetic poles to move closer together, increasing the repulsive force, and the first sensing unit 110 detects the increased pressure on that side. Conversely, the pressure plate 106 on the opposite side moves away from the bed surface, the first elastic element 109 extends, pushing the sliding block 107 outward from the sliding cavity, and the magnetic plate 108 moves away from the mating magnet. This causes the like magnetic poles to move further apart, decreasing the repulsive force, and the first sensing unit 110 detects the decreased pressure on that side. The pressure data from the two first sensing units 110 are compared by a comparator, and an alarm is triggered when the difference exceeds a preset safety threshold. Furthermore, the repulsive force between the magnetic plates 108 and the matching magnets ensures that the sliding blocks 107 on both sides are in a symmetrical equilibrium position in the initial state, ensuring that the initial zero point of the difference detection does not drift with changes in the wearing posture of the device, thus improving the detection accuracy for long-term use.

[0039] Example 6: As Figure 5 As shown, the difference between this embodiment and Embodiment 1 lies in the installation method of the third sensing unit 407. Two sets of rubber blocks 406 are fixedly connected to the inner side of the shaped flexible plate 404, and the two sets of rubber blocks 406 are arranged opposite each other in the width direction of the shaped flexible plate 404. Multiple sets of rubber blocks 406 are provided, evenly distributed along the length direction of the shaped flexible plate 404. A gap is left between the two sets of rubber blocks 406 in their natural state.

[0040] The third sensing unit 407 is clamped and fixed between the two sets of rubber blocks 406. The third sensing unit 407 is a thin-film pressure sensor or a strain gauge sensor, and its two sides are respectively attached and fixed to the opposite end faces of the two sets of rubber blocks 406.

[0041] In this embodiment, when the body rolls over and deforms the shaping flexible plate 404, the plate contracts or bends in the width direction, causing the two sets of rubber blocks 406 to move closer or further apart, compressing the third sensing unit 407. The rubber blocks 406, acting as a deformation transmission medium, concentrate the large-scale deformation of the flexible plate onto a localized area of ​​the third sensing unit 407, improving the sensitivity and signal-to-noise ratio of the deformation signal. Simultaneously, the rubber blocks 406 possess a certain degree of elasticity, providing cushioning protection for the third sensing unit 407 and preventing overload damage.

[0042] Working principle of this invention: Complete assembly and wearing method: Step 1: Place the second limiting plate 2 against the patient's front neck so that the mandibular support plate 5 supports the patient's mandible.

[0043] Step 2: Place the first limiting plate 101 against the back of the patient's neck, and wrap the tightening strap 102 around the neck from both sides, and attach and fix it to the corresponding positions on both sides of the second limiting plate 2 to complete the initial wearing of the device.

[0044] Step 3: Rotate the support plate 103 along the rotating shaft 105 to close it up to the side, so that it fits against both sides of the first limiting plate 101 for daytime activities.

[0045] Step 4: During the daytime, the second sensing unit 306 and the third sensing unit 407 are in standby monitoring mode. When the child's head turns beyond the limit, the cheek contacts the resistance plate 304, pushing the moving plate 303 to squeeze the second sensing unit 306, and the warning unit 307 emits an audible and visual alarm.

[0046] Step 5: Before going to sleep at night, rotate and unfold the support plate 103 via the rotating shaft 105 so that the compression plate 106 rests against the bed surface on both sides of the head.

[0047] Step 6: Install the body rotation warning module 4 onto the bottom of the second limiting plate 2 through the threaded engagement of the rotating sleeve 402 and the threaded shaft 403, and fix the tightening strap 405 to the patient's shoulders on both sides.

[0048] Step 7: In nighttime mode, the first sensor unit 110 monitors the head turning to the side, and the third sensor unit 407 monitors the body turning over. Once either is triggered, a remote alarm will be pushed to the caregiver's mobile terminal through the warning unit 307.

[0049] Step 8: After waking up during the day, rotate the rotating sleeve 402 in the opposite direction to disassemble the body rotation warning module 4, rotate and retract the support plate 103, and resume normal daytime activities.

[0050] Through the above assembly and wearing methods, cervical spine limiting protection is achieved in all scenarios, including wakefulness and sleep, effectively reducing the risk of secondary cervical spine injury.

[0051] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0052] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. Neck restraint devices for patients with cervical spine injuries, including: The limiting member (1) and the second limiting plate (2) are engaged and enclosed to form a neck accommodating space, characterized in that: A cheek rotation limiting module (3) is provided on both sides above the second limiting plate (2). The cheek rotation limiting module (3) includes: a limiting plate (301) fixedly installed on the top of the second limiting plate (2), a movable plate (303) movably disposed inside the limiting plate (301), and a second sensing unit (306) disposed between the limiting plate (301) and the movable plate (303). A resistance increasing plate (304) is fixedly connected to the side of the movable plate (303) facing the patient's cheek. The side of the resistance increasing plate (304) away from the movable plate (303) is an arc surface. The bottom of the second limiting plate (2) is provided with a body rotation early warning module (4). The body rotation early warning module (4) includes a shaping flexible plate (404) and a third sensing unit (407). Both ends of the shaping flexible plate (404) are provided with a tightening strap (405) for fixing to the patient's shoulder. The third sensing unit (407) is installed on the inner side of the shaping flexible plate (404).

2. The cervical restraint device for patients with cervical spine injuries according to claim 1, characterized in that: A second spring (305) is provided between the movable plate (303) and the limiting plate (301). One end of the second spring (305) is fixedly connected to the movable plate (303), and the other end of the second spring (305) is fixedly connected to the limiting plate (301).

3. The cervical restraint device for patients with cervical spine injuries according to claim 1, characterized in that: The shaped flexible plate (404) is an arc-shaped plate structure that bends inward.

4. The cervical restraint device for patients with cervical spine injuries according to claim 1, characterized in that: The body rotation early warning module (4) further includes a connecting plate (401), a rotating sleeve (402), and a threaded shaft (403). One end of the connecting plate (401) is fixedly connected to the shaping flexible plate (404), and the other end of the connecting plate (401) is fixedly connected to the rotating sleeve (402). One end of the threaded shaft (403) is threadedly connected to the rotating sleeve (402), and the other end of the threaded shaft (403) is fixedly connected to the second limiting plate (2).

5. The cervical restraint device for patients with cervical spine injuries according to claim 1, characterized in that: The limiting member (1) includes a first limiting plate (101) and a tightening band (102). The tightening band (102) is disposed on both sides of the first limiting plate (101), and the tightening band (102) is detachably and fixedly connected to the second limiting plate (2).

6. The cervical restraint device for patients with cervical spine injuries according to claim 5, characterized in that: Both sides of the first limiting plate (101) are fixedly connected to connectors (104), and a support plate (103) is rotatably connected to the connectors (104).

7. The cervical restraint device for patients with cervical spine injuries according to claim 6, characterized in that: The support plate (103) has a sliding cavity at one end away from the connector (104). A sliding block (107) is slidably disposed in the sliding cavity. A pressing plate (106) is fixedly connected to one end of the sliding block (107). The pressing plate (106) extends out of the sliding cavity. A first elastic element (109) is disposed between the other end of the sliding block (107) and the inner wall of the sliding cavity. A first sensing unit (110) is also installed in the sliding cavity.

8. The cervical restraint device for patients with cervical spine injuries according to claim 7, characterized in that: A magnetic plate (108) is fixedly connected to the sliding block (107); a matching magnet corresponding to the magnetic plate (108) is fixedly connected to the support plate (103), and the magnetic poles of the magnetic plate (108) and the matching magnet are the same and opposite to each other.

9. The cervical restraint device for patients with cervical spine injuries according to claim 1, characterized in that: Two sets of rubber blocks (406) are fixedly connected to the inner side of the shaped flexible plate (404). The two sets of rubber blocks (406) are arranged opposite to each other, and the third sensing unit (407) is clamped and fixed between the two sets of rubber blocks (406).

10. The cervical restraint device for patients with cervical spine injuries according to claim 1, characterized in that: The second limiting plate (2) is fixedly connected to a mandibular support platform (5), which is located in the middle of the second limiting plate (2).

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