A limb injury prevention restraint structure and restraint strap

Abstract

The utility model provides a kind of limbs damage-preventing restraint structure and restraint belt, when limb suddenly moves and hits restraint structure, soft pad layer absorbs kinetic energy by material compression deformation, reduces impact pressure intensity distribution;When limb moves in restraint space, rolling assembly generates homodromous rolling with skin movement, converts the sliding friction of traditional restraint belt into rolling friction;The circumference of annular space of baseband is changed by adjusting assembly, both guarantee restraint effect and avoid too tight compression;Protection uses the layered design of soft pad and rolling, respectively cope with two kinds of damage mechanism of instantaneous impact and sustained friction;Through composite protective layer design, impact buffering and friction reduction are realized simultaneously under the premise of maintaining restraint function;Through the above technical scheme, instantaneous impact force and sustained friction that skin is subjected to when limb struggles can be effectively reduced, and the formation of scratch and epidermis damage are prevented.

Description

Technical Field

[0001] This utility model relates to the field of restraint belt technology, specifically to a limb injury prevention restraint structure and restraint belt. Background Technology

[0002] Limb restraints are commonly used to restrain the limbs of patients with mental illnesses to prevent them from becoming agitated or engaging in uncontrolled behavior. The limb restraints currently used in clinical practice are ordinary cloth straps, with one end fixed to the patient's wrist or ankle by a knot, and the other end fixed to the bed rail by a knot.

[0003] When a patient's limbs are restricted by the aforementioned limb restraints, they may instinctively become agitated and struggle violently, which can easily lead to skin injuries on the limbs. Observation shows that the main causes of skin abrasions on the limbs are the impact of the restraints with the skin when the patient struggles suddenly, causing the restraints to embed into the flesh and form ligature marks, and the violent friction between the restraints and the skin of the restrained limbs when the patient swings their limbs, causing skin damage. If the skin abrasions on the limbs are not treated in time, it may cause large-area tissue damage or infection. Utility Model Content

[0004] The problem to be solved by this utility model is to provide a limb injury prevention restraint structure that can reduce the formation of ligature marks caused by restraint straps embedding into the skin and flesh of the limbs and reduce the severe friction between the restraint straps and the skin, as well as a restraint strap containing such a restraint structure.

[0005] The technical solution adopted by this utility model to solve the above problems is: a limb injury prevention restraint structure, comprising: A baseband, wherein the baseband includes a fixing component disposed at one end and an adjusting component disposed at the other end; when the adjusting component engages with the fixing component, the baseband forms an annular space for accommodating a wrist or ankle. A cushioned layer, wherein the cushioned layer is disposed on one side of the baseband to cushion the impact of a wrist or ankle within the annular space of the baseband; and A rolling layer, wherein the rolling layer is disposed on the side of the padding layer away from the baseband; the rolling layer includes a plurality of rolling components disposed along the length direction to reduce friction when the wrist or ankle moves within the annular space of the baseband.

[0006] Compared with existing technologies, this invention, when a limb suddenly moves and impacts the restraint structure, utilizes a soft padding layer to absorb kinetic energy through material compression deformation, reducing the impact pressure distribution. As the limb moves within the restraint space, the rolling component moves in the same direction as the skin, converting the sliding friction of traditional restraint straps into rolling friction. The annular space of the base strap has its circumference adjusted by an adjustment component, ensuring restraint effectiveness while avoiding excessive tightness. The protection employs a layered design of soft padding and rolling components to address both instantaneous impact and continuous friction injury mechanisms. Traditional restraint straps rely solely on a single layer of fabric to fix the limb, lacking dynamic protection. This invention, through a composite protective layer design, simultaneously achieves impact buffering and friction reduction while maintaining restraint functionality. These technical solutions effectively reduce the instantaneous impact and continuous friction on the skin during limb struggle, preventing ligature marks and epidermal damage. The buffer layer absorbs impact energy to prevent tissue compression injuries, and the rolling component reduces frictional heat accumulation and the risk of epidermal tearing, significantly improving safety while ensuring restraint effectiveness.

[0007] According to one embodiment of the present invention, the fixing component includes a fixing strap body sewn to a base tape and an extension strap at one end of the fixing strap body; the fixing strap body has a first fixing surface on the side away from the base tape; the extension strap has a second fixing surface that cooperates with the first fixing surface.

[0008] According to one embodiment of the present invention, the adjusting component includes a plurality of D-rings disposed at the other end of the fixing belt body; the plurality of D-rings are arranged in an array along the length direction of the fixing belt body; the extension belt passes through the D-rings and then folds back, and the annular space formed by the base belt is maintained by the cooperation of the second fixing surface and the first fixing surface.

[0009] According to one embodiment of the present invention, the cushion layer includes a memory foam layer and a smooth silicone coating disposed on the surface of the memory foam layer; the smooth silicone coating is configured to have spaced breathable grooves on its surface.

[0010] According to one embodiment of the present invention, the rolling assembly includes a plurality of retaining portions disposed along the width direction of the baseband, and a rolling portion rotatably disposed on the retaining portions.

[0011] According to one embodiment of the present invention, the retaining part is configured as a connecting strip along the width direction of the base strip; the rolling part includes a plurality of micro balls strung on the connecting strip; the micro balls have a degree of freedom to move along the central axis of the connecting strip and a degree of freedom to rotate about the central axis of the connecting strip.

[0012] According to one embodiment of the present invention, the rolling portion further comprises a plurality of buffer partitions; the buffer partitions are respectively disposed between two of the micro balls.

[0013] A restraint strap, including the aforementioned limb injury prevention restraint structure, further includes: An elastic band, wherein the elastic band is configured to be connected to the fixing component; and A binding strap, wherein the elastic band is configured to be connected to one end of the elastic band.

[0014] According to one embodiment of the present invention, one end of the elastic band is configured to be sewn into the middle of the fixing component; the elastic band includes a first fixing end disposed away from one end of the fixing component.

[0015] According to one embodiment of the present invention, the binding strap includes a second fixed end disposed at one end and a binding end disposed at the other end; the second fixed end is configured to be bound to the first fixed end. Attached Figure Description

[0016] Figure 1 This is a perspective view of a limb injury prevention restraint structure according to a preferred embodiment of the present invention.

[0017] Figure 2 This is a three-dimensional schematic diagram from another side of a preferred embodiment of the limb injury prevention restraint structure according to the present invention.

[0018] Figure 3 This is a top view schematic diagram of a limb injury prevention restraint structure according to a preferred embodiment of the present invention.

[0019] Figure 4 This is a three-dimensional schematic diagram of the rolling layer according to a preferred embodiment of the present invention.

[0020] Figure 5 This is a top view of a preferred embodiment of the rolling layer according to the present invention.

[0021] Figure 6 This is a perspective view of one side of the constraint strap according to a preferred embodiment of the present invention.

[0022] Figure 7 This is a perspective view of the constraint strap from another side according to a preferred embodiment of the present invention. Detailed Implementation

[0023] Before describing any embodiment of this invention in detail, it should be understood that the invention is not limited in its application to the details of the construction and arrangement of the components set forth in the following description or illustrated in the following figures. The invention is capable of other embodiments and can be practiced or carried out in various ways. Furthermore, it should be understood that the wording and terminology used herein are for descriptive purposes and should not be considered limiting. The use of “comprising” or “having” and variations thereof herein is intended to cover the items set forth below and their equivalents, as well as any additional items. Unless otherwise specified or limited, the terms “installation,” “connection,” “support,” and “linkage,” and variations thereof are used broadly and cover both direct and indirect installation, connection, support, and linking. Moreover, “connection” and “linkage” are not limited to physical or mechanical connections or links.

[0024] Furthermore, firstly, in the disclosure of this utility model, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as a limitation on this utility model. Secondly, the term "a" should be understood as "at least one" or "one or more," that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple. The term "a" should not be construed as a limitation on the quantity.

[0025] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functions and structural principles of the present invention have been shown and explained in the embodiments. Without departing from the stated principles, the implementation of the present invention may have any variations or modifications.

[0026] The embodiments of this utility model will be further described below with reference to the accompanying drawings.

[0027] In existing technologies, limb restraints often use ordinary cloth straps to fix limbs by tying knots. When patients struggle, the restraints come into direct contact with the skin, causing impact and friction, resulting in skin marks and damage. Traditional restraint structures lack a buffering mechanism, and sliding friction during limb movement causes continuous damage to the epidermal tissue, posing a risk of secondary injury.

[0028] To address these issues, it was found that limb injuries primarily stem from the combined effects of instantaneous impact force and continuous friction. Analysis suggests that the constraint structure must simultaneously possess energy absorption and friction conversion capabilities. Traditional solutions focus only on fixed strength, neglecting dynamic protection requirements. By studying the combination of cushioning materials and rolling structures, a composite protective layer design was developed, combining the dispersion and absorption of impact energy with the conversion of sliding friction into rolling friction.

[0029] Please see Figure 1-5 The aforementioned limb injury prevention restraint structure includes a base band 1, a padding layer 2, and a rolling layer 3. The base band 1 includes a fixing component 11 at one end and an adjusting component 12 at the other end. When the adjusting component 12 cooperates with the fixing component 11, the base band 1 forms an annular space for accommodating the wrist or ankle. The padding layer 2 is disposed on one side of the base band 1 to cushion the impact of the wrist or ankle within the annular space of the base band 1. The rolling layer 3 is disposed on the side of the padding layer 2 away from the base band 1. The rolling layer 3 includes a plurality of rolling components 31 arranged along the length direction to reduce friction when the wrist or ankle moves within the annular space of the base band 1.

[0030] Among them, the base band 1 refers to the strip-shaped main body made of flexible fabric, which can be realized by combining nylon webbing with adjusting buckles. The adjustable ring structure is formed by the cooperation of the components at both ends to adapt to different limb sizes; the cushion layer 2 refers to the buffer medium layer covering the inside of the base band, which can be realized by a composite structure of memory foam and silicone coating, absorbing impact energy through material deformation; the rolling layer 3 refers to the active component layer set on the surface of the buffer layer, which can be realized by combining ball bearings and retaining bands, changing the friction mode through rolling motion.

[0031] Specifically, when a limb suddenly moves and impacts the restraint structure, the padding layer 2 absorbs kinetic energy through material compression deformation, reducing the impact pressure distribution. When the limb moves within the restraint space, the rolling component 31 rolls in the same direction as the skin, converting the sliding friction of traditional restraint straps into rolling friction. The annular space of the base strap 1 has its circumference changed by the adjusting component 12, ensuring restraint effectiveness while avoiding excessive tightness. The protection adopts a layered design of padding and rolling to address both instantaneous impact and continuous friction injury mechanisms. Compared with existing technologies, traditional restraint straps rely solely on a single layer of fabric to fix the limb, lacking dynamic protection. This solution, through a composite protective layer design, simultaneously achieves impact buffering and friction reduction while maintaining restraint function. Through the above technical solutions, the instantaneous impact force and continuous friction force on the skin during limb struggle can be effectively reduced, preventing the formation of ligature marks and epidermal damage. The buffer layer absorbs impact energy to avoid tissue compression injuries, and the rolling component 31 reduces the accumulation of frictional heat and the risk of epidermal tearing, significantly improving safety while ensuring restraint effectiveness.

[0032] Please continue reading. Figure 2 , Figure 3 The fixing component 11 includes a fixing belt body 111 sewn to the base belt 1 and an extension belt 112 fixed at one end of the fixing belt body 111; the fixing belt body 111 has a first fixing surface 1111 on the side away from the base belt 1; the extension belt 112 has a second fixing surface 1121 that cooperates with the first fixing surface 1111.

[0033] The fixing strap body 111 refers to the strap-shaped structure that forms a rigid connection with the base strap 1. Specifically, it can be achieved by sewing a high-strength nylon strap onto the back of the base strap 1, and the sewing length can be 1.5 to 3 times the width of the base strap 1. The extension strap 112 refers to the adjustable component that forms a detachable connection with the fixing strap body 111. Specifically, it can be achieved by using an integrally molded material of the same material as the fixing strap body 111, and its length can be 1 to 1.5 times the length of the fixing strap body. The first fixing surface 1111 refers to the adhesive area set on the back of the fixing strap body 111. Specifically, it can be achieved by covering two-thirds of the distal area of ​​the fixing strap body with the hook side of the Velcro. The second fixing surface 1121 refers to the mating area set on the back of the extension strap 112. Specifically, it can be achieved by covering two-thirds of the proximal area of ​​the extension strap with the loop side of the Velcro.

[0034] Specifically, when the extension band 112 passes through the adjustment component 12 and folds back, the second fixing surface 1121 and the first fixing surface 1111 form an overlapping adhesive area; when the patient's limb movement generates a pulling force, the sewn connection point between the fixing band body 111 and the base band 1 bears the main tensile force, while the overlapping adhesive area between the extension band 112 and the fixing band body 111 disperses the stress through surface contact; the cooperation of the two fixing surfaces forms an interlocking structure to prevent longitudinal slippage.

[0035] Please continue reading. Figure 2 The adjustment component 12 includes a plurality of D-ring buckles 121 disposed at the other end of the fixing belt body 111; the plurality of D-ring buckles 121 are arranged in an array along the length direction of the fixing belt body 111; the extension belt 112 passes through the D-ring buckles 121 and is folded back, and the annular space formed by the base belt 1 is maintained by the cooperation of the second fixing surface 1121 and the first fixing surface 1111.

[0036] Among them, the D-ring buckle 121 refers to a rectangular metal or plastic buckle with two horizontal through holes. Specifically, it can be made of smooth nylon material. It is arranged at intervals along the length of the fixing strap body 111 to form multiple selectable adjustment points. The extension strap 112 folding refers to the extension strap 112 passing through the upper through hole of the selected D-ring buckle 121 and bending 180 degrees back to the direction of the fixing strap body 111. This folding operation makes the extension strap 112 and the fixing strap body 111 form an overlapping contact surface.

[0037] Specifically, the D-ring buckles 121 are arranged in an adjustable array along the length of the fixing strap body 111 at intervals of 2 to 4 centimeters. Medical staff select the corresponding D-ring buckle 121 as the threading point according to the patient's limb circumference. The extension strap 112 extends from the end of the fixing strap body 111, passes through the upper through hole of the selected D-ring buckle 121, and then folds back to the surface of the fixing strap body 111. The folded extension strap 112 is bonded to the hook and loop surface of the fixing strap body 111 through the hook and loop hook surface on its outer surface, forming a double constraint structure. This structure works in synergy between the mechanical limiting effect of the D-ring buckles 121 and the adhesive effect of the hook and loop hooks to maintain the stable size of the annular space during limb movement. Figure 3 As shown, the extension band 112 moves along the direction of the dotted line, passes through the appropriate D-ring buckle 121, and then folds back to finally form an annular space in region C. Through the above technical solution, the circumference of the annular space can be precisely adjusted at multiple levels to adapt to the constraint requirements of different limb sizes. The constraint structure formed by the folding of the extension band 112, combined with the Velcro self-locking mechanism, reduces the risk of constraint loosening and ensures the stability of the annular space size under constraint.

[0038] Please continue reading. Figure 3 , Figure 5 The cushion layer 2 includes a memory foam layer 21 and a smooth silicone coating 22 disposed on the surface of the memory foam layer 21; the smooth silicone coating 22 is configured to have spaced ventilation grooves 221 on its surface.

[0039] Among them, the memory foam layer 21 refers to a polymer material layer with slow rebound characteristics, specifically polyurethane foam material, which absorbs impact energy through the deformation of the material itself, reducing the pressure concentration when the limb comes into contact with the baseband; the smooth silicone coating 22 refers to a low-friction coefficient flexible material layer covering the surface of the memory foam layer 21, which can be achieved by coating liquid silicone and then curing it, and its smooth surface characteristics reduce the frictional resistance generated during limb movement; the breathable grooves 221 refer to the groove structure regularly distributed on the surface of the silicone coating 22, which can be formed by mold pressing or laser engraving process, and the groove structure increases the surface area to promote moisture evaporation while maintaining the continuity of the coating.

[0040] Specifically, the memory foam layer 21 undergoes compression deformation upon impact with a limb, dispersing the local impact force over a larger contact area and preventing concentrated stress on the skin from the restraint band edges. A smooth silicone coating 22 covers the surface of the memory foam layer 21, forming a low-friction interface. When the limb swings within the restraint band, the sliding resistance between the silicone surface and the skin is significantly reduced, thus minimizing mechanical damage to the epidermis. This also allows the rolling component 31 to roll even when pressed against the smooth silicone coating 22, reducing friction. The spaced ventilation grooves 221 form air circulation channels on the surface of the silicone coating 22. On one hand, this increases the surface area, accelerating sweat evaporation and preventing the skin from being in a damp environment for extended periods. On the other hand, when the base band 1 is bent to form a ring-shaped restraint space, the groove structure of the ventilation grooves allows for localized deformation of the silicone coating, preventing cracking or peeling due to bending. Compared to existing technologies, traditional restraint bands only use a single layer of cotton or sponge. As a buffer layer, its material rebounds too quickly and cannot effectively disperse the impact force, and its rough surface easily causes friction with the skin. The combination of smooth silicone coating 22 and memory foam layer 21 not only achieves the dual functions of buffering and anti-friction through the synergistic effect of the two layers, but the design of the ventilation groove 221 also breaks through the inherent defect of traditional silicone coatings that have too strong sealing and poor breathability. While maintaining anti-friction performance, it forms a controllable ventilation channel. With this setting, the problem of skin injury caused by insufficient cushioning of the soft pad layer when the patient is restrained is effectively solved, while avoiding skin moisture infection caused by poor breathability of traditional soft pad materials. The memory foam layer 21 absorbs the impact energy when the limb struggles through the material deformation characteristics, the smooth silicone coating 22 reduces the friction damage caused by limb swinging, and the ventilation groove 221 keeps the skin surface dry by enhancing air circulation. The three work together to achieve a balance between protection and comfort in the restraint device.

[0041] Please continue reading. Figure 1 , Figure 4 , Figure 5 The rolling component 31 includes a plurality of holding portions 312 disposed along the width direction of the base belt 1, and a rolling portion 311 disposed rotatably in the holding portions 312.

[0042] The retaining part 312 refers to the load-bearing structure for mounting the rolling part 311. Specifically, it can be implemented by using a connecting belt extending laterally along the base belt 1. The connecting belt can be fixed to the surface of the base belt 1 by sewing or hot pressing. Its function is to provide a stable mounting base for the rolling part 311 and prevent the rolling part 311 from shifting or falling off when subjected to force. The rolling part 311 refers to the friction-reducing component that contacts the limb. Specifically, it can be implemented by using miniature balls 3111 connected in series on the connecting belt. The surface of the miniature balls 3111 can be covered with a flexible material to reduce the contact hardness. Its function is to convert the sliding friction between the limb and the restraint belt into rolling friction through rolling motion, thereby reducing frictional resistance.

[0043] Specifically, the connecting band is evenly distributed along the width of the base band, allowing the rolling part 311 to cover the transverse area of ​​the limb contact surface. When the limb moves, the micro-balls 3111 roll freely in the direction of limb movement, maintaining the stability of the restraint band's annular structure while dispersing frictional energy through rolling. For example, when a patient struggles with their wrist or ankle, the micro-balls 3111 rotate or move along the central axis of the connecting band, keeping the contact surface between the restraint band and the skin in a dynamic adjustment state, avoiding continuous stress on the local skin due to sliding in one direction. Compared with existing technologies, traditional restraint bands only reduce friction through a smooth coating, but they still rely on a sliding contact mechanism, which cannot adapt to multi-directional limb movements and is prone to damage during intense activity. During intense struggle, local friction hotspots are generated. This design, through the combination of a rolling part and a retaining part, transforms sliding friction into rolling friction, which can adapt to limb movement in any direction. At the same time, the laterally distributed connecting bands further expand the coverage of the friction-reducing effect, avoiding the aggravation of local friction due to the concentrated distribution of the rolling part. Under this setting, the risk of skin damage caused by friction when the patient's limbs move within the restraint band is effectively reduced. The rolling motion of the rolling part 311 directly reduces the friction force on the skin surface, and the lateral distribution of the retaining part 312 ensures that the friction-reducing effect covers the limb contact surface. The two work together to form a dynamic friction-reducing mechanism, which maintains the restraint function while avoiding the concentration of frictional energy on a single skin area.

[0044] Please refer to further information. Figure 4 , Figure 5 The retaining part 312 is configured as a connecting belt along the width direction of the base belt 1; the rolling part 311 includes a plurality of miniature balls 3111 strung on the connecting belt; the miniature balls 3111 have a degree of freedom to move along the central axis of the connecting belt and a degree of freedom to rotate about the central axis of the connecting belt.

[0045] Among them, the miniature ball bearing 3111 can be a spherical or cylindrical rolling element with a diameter of less than 3 mm, specifically made of medical-grade stainless steel or ceramic materials, and its degree of freedom of movement along the axial direction (i.e. Figure 4 The degree of freedom shown in direction A allows for displacement compensation when the ball moves longitudinally in the limb, and the degree of freedom for rotation about the axis (i.e., Figure 5 The B-direction degree of freedom shown allows the ball bearing to rotate as the limb twists circumferentially.

[0046] Specifically, the connecting belt is arranged along the width of the base belt 1 to form a transverse support track, and multiple micro-balls 3111 are connected in series inside the track to form a sliding linear array. When the patient's limb swings, the friction direction of the skin contact surface can be divided into two categories: longitudinal tension and circumferential torsion. In longitudinal movement, the micro-balls 3111 slide along the track axis to counteract the tensile force; in circumferential movement, the micro-balls 3111 rotate around the track axis to eliminate torsional friction. The synergistic effect of these two degrees of freedom enables the restraint belt and the skin contact surface to form a dynamic rolling interface, transforming the linear contact of traditional restraint belt sliding friction into the point-like dispersed contact of rolling friction. Through the displacement compensation and rotation adjustment of the balls, it continuously adapts to the frictional stress generated by the multi-directional movement of the limb. Compared with existing technologies, traditional restraint belts use fixed cloth strips to directly contact the skin. During vigorous limb movement, continuous sliding friction occurs between the strap and the skin. This solution transforms sliding friction into dynamic rolling friction by introducing an array of micro-balls 3111 that can slide axially and rotate circumferentially. This changes the frictional force from a single direction to multi-directional dispersion, and the frictional contact area from continuous fabric contact to discrete ball contact. With this setup, when the patient's limb swings, the composite motion of the micro-balls 3111 disperses the skin friction stress to multiple independent rolling units, avoiding concentrated frictional damage to the skin caused by the fixed strap. The axial sliding of the micro-balls 3111 can absorb the displacement generated by the longitudinal stretching of the limb, and the circumferential rotation can eliminate the shear force generated when the limb twists. The dual-degree-of-freedom design allows the restraint strap to adapt to multi-dimensional limb movements, significantly reducing the risk of skin abrasions.

[0047] Please refer to further information. Figure 4 The rolling part 311 is further divided into multiple buffer partitions 3112; the buffer partitions 3112 are respectively disposed between two micro balls 3111.

[0048] The buffer separator 3112 refers to a flexible isolation structure set between adjacent micro balls 3111. Specifically, it can be implemented by using an annular ring made of elastic material, such as silicone or polyurethane, with an outer diameter equal to or slightly larger than the diameter of the micro balls 3111. This structure restricts the axial displacement of the balls while absorbing collision energy through the elastic deformation of the material.

[0049] Specifically, when the patient's limbs struggle and cause the rolling layer 3 to come into contact with the skin, the micro-balls 3111 generate axial displacement and rotational motion within the connecting belt; the buffer partition 3112 absorbs the impact force generated by the collision of adjacent micro-balls 3111 through elastic deformation, avoiding motion stagnation caused by rigid contact of the balls; at the same time, the buffer partition 3112 divides the group of micro-balls 3111 into independent motion units, so that the local pressure in the skin contact area is dispersed to a larger contact area through the elastic support of the buffer partition 3112; while maintaining the low-friction rolling characteristics of the micro-balls 3111, the buffer partition 3112 eliminates the pressure concentration phenomenon caused by the dense arrangement of micro-balls 3111; under this setting, non-rigid contact between micro-balls 3111 is achieved through the buffer partition 3112, which maintains the degree of freedom of movement of individual micro-balls 3111 and achieves pressure dispersion through the flexible support structure.

[0050] Please see Figure 6 , Figure 7 The restraint strap shown includes the aforementioned limb injury prevention restraint structure, and also includes an elastic band 4 and a binding strap 5; wherein the elastic band 4 is configured to be connected to the fixing component 11; wherein the elastic band 4 is configured to be connected to one end of the elastic band 4.

[0051] Among them, the elastic band 4 refers to a strip-shaped component with longitudinal stretching capability, which can be achieved by using a woven band containing a high-resilience rubber core, and its elastic modulus can be controlled between 0.5MPa and 3MPa; this feature absorbs the impact energy generated when limbs struggle through elastic deformation; the binding band 5 refers to a connecting component with an adjustable fixed length, which can be achieved by using nylon webbing with a buckle structure, and its length adjustment range can be set from 30cm to 150cm; this feature disperses the restraint tension through multi-point fixation.

[0052] Specifically, the connection between the elastic band 4 and the middle of the fixation component 11 forms a primary buffer structure. When the patient's limb struggles violently, the stretching and deformation of the elastic band 4 prolongs the impact time, converting the instantaneous rigid tension into the storage and release of elastic potential energy. The binding strap 5, through the connection between its second fixing end 51 and the end of the elastic band 4, forms a secondary buffer structure. The restraint tension is dispersed to the deformation area of ​​the elastic band 4 and the length direction of the binding strap, avoiding stress concentration caused by a single-point connection. The cooperation of the two forms a graded buffer mechanism. The elastic band 4 mainly absorbs high-frequency impact energy, while the binding strap 5 is responsible for dispersing low-frequency continuous tension. Dynamic balance is achieved through the synergistic effect of material elasticity and structural design. Through the above technical solution, the rigid tension of the restraint strap fixing end on the skin can be significantly reduced, preventing the edge of the restraint strap from cutting into the skin and forming marks when the limb struggles, and further reducing epidermal abrasion caused by friction.

[0053] Please continue reading. Figure 6 , Figure 7 One end of the elastic band 4 is configured to be sewn into the middle of the fixing component 11; the elastic band 4 includes a first fixing end 41 disposed at one end away from the fixing component 11; the binding band 5 includes a second fixing end 51 disposed at one end and a binding end 52 disposed at the other end; the second fixing end 51 is configured to be bound to the first fixing end 41.

[0054] The second fixing end 51 refers to the part where the binding strap connects to the elastic band. Specifically, it can be implemented using a strap structure with Velcro or buckles, forming a detachable connection with the first fixing end through wrapping or fastening, thus enhancing the connection stability. The binding end 52 refers to the strap part used to fix to the bed rail, specifically using a structure with a loop or hook at the end for easy adaptation to rails of different shapes. The first fixing end 41 refers to the end of the elastic band 4 away from the fixing component 11, specifically using a sewn or heat-pressed connection part to form a fixing point that matches the second fixing end 51.

[0055] The above description only illustrates the preferred embodiment of this utility model and should not be construed as limiting the scope of the claims. This utility model is not limited to the above embodiments, and variations in its specific structure are permitted. All changes made within the scope of the independent claims of this utility model are also within the scope of protection of this utility model.

Claims

1. A limb injury prevention restraint structure, characterized in that, include: A baseband (1), wherein the baseband (1) includes a fixing component (11) disposed at one end and an adjusting component (12) disposed at the other end; when the adjusting component (12) cooperates with the fixing component (11), the baseband (1) forms an annular space for accommodating a wrist or ankle. A cushioning layer (2), wherein the cushioning layer (2) is disposed on one side of the baseband (1) so as to cushion the wrist or ankle when impacted within the annular space of the baseband (1); as well as A rolling layer (3), wherein the rolling layer (3) is disposed on the side of the padding layer (2) away from the baseband (1); the rolling layer (3) includes a plurality of rolling components (31) disposed along the length direction to reduce friction when the wrist or ankle moves within the annular space of the baseband (1).

2. The limb injury prevention restraint structure according to claim 1, characterized in that: The fixing component (11) includes a fixing strap body (111) sewn to the base strap (1) and an extension strap (112) at one end of the fixing strap body (111); the fixing strap body (111) has a first fixing surface (1111) on the side away from the base strap (1); the extension strap (112) has a second fixing surface (1121) that cooperates with the first fixing surface (1111).

3. The limb injury prevention restraint structure according to claim 2, characterized in that: The adjustment component (12) includes a plurality of D-ring buckles (121) disposed at the other end of the fixing belt body (111); the plurality of D-ring buckles (121) are arranged in an array along the length direction of the fixing belt body (111); the extension belt (112) passes through the D-ring buckles (121) and then folds back, and the annular space formed by the base belt (1) is maintained by the cooperation of the second fixing surface (1121) and the first fixing surface (1111).

4. The limb injury prevention restraint structure according to claim 1, characterized in that: The cushion layer (2) includes a memory foam layer (21) and a smooth silicone coating (22) disposed on the surface of the memory foam layer (21); the smooth silicone coating (22) is configured to have air-permeable grooves (221) spaced apart on its surface.

5. The limb injury prevention restraint structure according to claim 1, characterized in that: The rolling assembly (31) includes a plurality of retaining portions (312) disposed along the width direction of the baseband (1), and a rolling portion (311) rotatably disposed on the retaining portions (312).

6. The limb injury prevention restraint structure according to claim 5, characterized in that: The retaining part (312) is configured as a connecting strip along the width direction of the base strip (1); the rolling part (311) includes a plurality of miniature balls (3111) threaded on the connecting strip; the miniature balls (3111) have a degree of freedom to move along the central axis of the connecting strip and a degree of freedom to rotate about the central axis of the connecting strip.

7. The limb injury prevention restraint structure according to claim 6, characterized in that: The rolling part (311) further comprises a plurality of buffer partitions (3112); the buffer partitions (3112) are respectively disposed between the two micro balls (3111).

8. A restraint strap, comprising the limb injury prevention restraint structure as described in any one of claims 1-7, characterized in that, include: An elastic band (4), wherein the elastic band (4) is configured to be connected to the fixing component (11); as well as A binding strap (5), wherein the elastic band (4) is configured to be connected to one end of the elastic band (4).

9. The constraint strap according to claim 8, characterized in that: One end of the elastic band (4) is configured to be sewn into the middle of the fixing component (11); the elastic band (4) includes a first fixing end (41) disposed at one end away from the fixing component (11).

10. The restraint strap according to claim 9, characterized in that: The binding strap (5) includes a second fixed end (51) disposed at one end and a binding end (52) disposed at the other end; the second fixed end (51) is configured to be bound to the first fixed end (41).

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