CN216933926U - Lower limb rehabilitation walking aid - Google Patents

Abstract

The utility model relates to a lower limb rehabilitation walking aid, which at least comprises a main support, and further comprises a thigh supporting component and a shank supporting component which are respectively contacted with an affected side from the back side of the thigh of the affected side and the back side of the shank of the affected side under the condition that the walking aid is worn on the affected side, and are both assembled at the same end part of the main support. The frame body at the end part of the main frame support far away from the thigh supporting assembly and the shank supporting assembly is provided with a first radian and a second radian which are mutually bent and face away from each other. This application has carried out structural improvement to the trunk support, can form the space of dodging the trunk that is close to the heel on the user's shank, and the second backup pad still can play supporting role and power conduction effect simultaneously. In this arrangement, the device proposed in the present application allows the user to bend the lower leg backwards over a greater angle, better meeting the different requirements imposed on the knee joint bending angle.

Description

Lower limb rehabilitation walking aid

Technical Field

The utility model relates to the technical field of rehabilitation instruments, in particular to a lower limb rehabilitation walking aid.

Background

The ankle and knee joints are vulnerable to athletic injuries because in most sports, both joints are subjected to greater stress and are therefore more prone to injury. In addition to the motor impairment, when the cartilage of the ankle or knee joint is diseased, such as osteoarthritis, the cartilage of the joint is gradually degenerated, necrosed and worn, and then the bones begin to rub against each other directly, thereby causing joint pain and further affecting daily life. In addition, joint aging, genetics, obesity, or excessive motion can also cause additional weight to the joint. For these joint problems, there is a need for a device for rehabilitation that can avoid or reduce the weight bearing of the limbs of the joint part, i.e. a lower limb walker with load-free function, which is usually a mechanical device wearable outside the body of the operator, and which can provide support and protection for the knee joint or ankle joint, reduce the impact on the joint, and help to reduce the pain of the joint and help to recover the joint.

In the prior art, patent document No. CN207221003U proposes a walking aid device, which mainly comprises a velcro strap, a support rod and a base, wherein the velcro strap is used for fixing the affected side of the patient and the walking aid device, the upper part of the support rod is a support seat, the support seat is in contact with the back of the thigh, the lower part of the support rod is inserted into a barrel-shaped groove of the base, the lower part of the support rod and the barrel-shaped groove of the base are provided with a plurality of corresponding screw holes, adjusting screws are screwed into the screw holes with different heights, and the depth of the support rod inserted into the base is adjusted to adapt to different heights of the human body. The base is composed of a barrel-shaped groove and a simulation foot, the barrel-shaped groove is connected with the simulation foot through a shaft, the simulation foot can move through the shaft, and a spring is arranged in front of and behind the simulation foot and connected with the barreled groove to limit the moving range of the simulation foot. The simulated sole is arched and is similar to the arch of foot, and the bottom is made of elastic material to buffer the impact force between the simulated sole and the ground. The foot of the patient does not touch the ground and does not receive force directly.

In the technical scheme provided by the above patent, the trunk support provided by most of the prior art is of a vertical rod body structure, the backward bending of the lower leg with a larger angle enables the heel of the user to abut against the trunk support, so that the backward bending of the lower leg with a larger angle is not allowed for the user, and the application range is limited for the requirements of different knee joint bending angles.

Furthermore, on the one hand, due to the differences in understanding to the person skilled in the art; on the other hand, since the inventor has studied a lot of documents and patents when making the present invention, but the space is not limited to the details and contents listed in the above, however, the present invention is by no means free of the features of the prior art, but the present invention has been provided with all the features of the prior art, and the applicant reserves the right to increase the related prior art in the background.

SUMMERY OF THE UTILITY MODEL

To the not enough of prior art, this application has provided a recovered capable ware of helping of low limbs, includes the trunk support at least, help capable ware still include with this help capable ware dress to the condition on the affected side respectively from affected side thigh rear side and affected side shank rear side come with the affected side contact and all assemble thigh supporting component and the shank supporting component of same tip on the trunk support. The frame body at the end part of the main frame support far away from the thigh supporting assembly and the shank supporting assembly is provided with a first radian and a second radian which are mutually bent and face away from each other. This application has carried out structural improvement to the trunk support, is the forming die of certain radian change through prefabricated cavity, pours into this forming die with the forming material of melt state/particulate state into, has obtained after the cooling die sinking and has had this support body/second backup pad of predetermineeing the radian change. In particular, the shelf/second support plate can be fitted as the lower shelf of the main frame, i.e. at a position corresponding to the heel from which the user is hanging. The radian of predetermineeing that forms in the second backup pad can form the space of dodging the truck that is close to the heel on the user's shank, and the second backup pad still can play supporting role and power conduction effect simultaneously. In this arrangement, the device proposed in the present application allows the user to bend the lower leg backwards over a greater angle, better meeting the different requirements imposed on the knee joint bending angle.

For the convenience of understanding, a three-dimensional coordinate system is established for the walking aid, wherein the parallel direction of the legs of the user when the user stands normally is an X axis, the parallel direction of the back of the face of the user is a Y axis, and the direction or the vertical direction of the height of the user is a Z axis. In this application, the backbone support includes a shelf/second support plate distal from the end where the thigh support assembly and the lower leg support assembly are located. The second support plate has at least an end surface extending vertically upward from a third end to a fourth end thereof. The end face has a first arc and a second arc that curve away from each other. The end face may be an end face perpendicular to the XZ plane. On this basis, in the case of viewing the device perpendicular to the XZ plane, the angle between the tangential direction formed by the end faces of the backbone support in the direction of extension thereof and the Z axis/vertical direction has at least a decreasing trend and an increasing trend simultaneously. The included angle referred to in this application may refer to a single angle or may be a continuously varying set of included angle data. More specifically, in the case where the device is viewed perpendicularly to the XZ plane, the included angle between the tangential direction formed by the end surface of the main holder in the extending direction thereof and the Z axis/vertical direction tends to gradually decrease and then gradually increase. Preferably, the angle between the tangent direction formed by the end surface at the third end portion in the extending direction thereof and the Z axis is a right angle. Preferably, the end face forms an angle between a tangential direction of the fourth end portion in the extending direction thereof and the Z axis at a right angle.

The projection of this end of the trunk support on an imaginary horizontal plane perpendicular to the vertical is always located in the middle region of the projection of the thigh support assembly on this imaginary horizontal plane. The virtual horizontal plane perpendicular to the vertical direction may also be the ground. Namely, the vertical top end of the main support is supported on the middle area of the thigh supporting assembly, the acting force conducted downwards by the thigh on the affected side through the thigh supporting assembly is inwards collected to the middle area and then is conducted downwards to the main support, and the force is concentrated and is more beneficial to control. Likewise, the ground reaction force conducted upward by the ground through the main frame is distributed to the affected thigh along the thigh support assembly having a certain coverage area, the force is distributed, and the force can be distributed more uniformly because the main support position is located on the middle area. Because the force application and the stress after the walking aid is worn are more stable and reliable, a user can adapt to the walking aid more quickly, and the walking aid is favorable for quick recovery after the walking aid is detached.

This application has carried out as aforementioned institutional advancement to trunk support, because the device that this application provided allows the user to the postflexion shank of great angle to after dressing the device, user's shank is more located the thigh directly under, rather than dangling excessively in thigh the place ahead or the health rear side, user's health focus is more inclined to in the vertical at its main trunk place, the user can maintain the stability of health better, is favorable to realizing better recovered effect from this.

Preferably, the lower leg support assembly is assembled on the main support, and the action position of the lower leg on the affected side, which is acted by the pulling force of the lower leg on the affected side and conducted by the lower leg support assembly and faces the face of the user, on the affected side after the lower leg support assembly is assembled on the lower leg on the affected side is located at the same end part of the main support as the assembly position of the thigh support assembly on the main support. Namely, the thigh support assembly and the shank support assembly are arranged at the same end part, namely the vertical top end, of the trunk support at the assembly positions on the trunk support. The large and small leg supports are respectively connected to the large and small legs at positions closer to the knees, and even if the small legs bend backwards, the tensile force acting on the side, where the face of the user is located, formed by the main support is mainly concentrated on the upper end of the main support. Therefore, when the user walks, the whole gravity center of the trunk support and the affected side is more inclined to the top end of the trunk support, the top end of the trunk support is relatively closer to the root of the thigh, namely, the user mainly exerts force to drive the affected limb to move when walking, the vertical gravity center position is highly suitable, and the user can move the affected limb more easily.

The frame body on the main support close to the end part where the thigh supporting assembly and the shank supporting assembly are located is provided with a third radian which is bent towards the side where the affected side is located when the user wears the walking aid in the use state.

The device that this application provided sets up the upper end of trunk support into the microbending form, makes its vertical top to the reverse force that the sick side thigh formed no longer completely through vertical going effect, but forms the reverse effect through the direction of perpendicular to sick side thigh more. Specifically, the plate body of the first support plate of the main support may be perpendicular to the XY plane, and the side surface of the plate body thereof vertically extends upward from the first end to the second end thereof to form a third arc. Under this radian setting, the trunk support passes through thigh supporting component to thigh rear side conduction's reverse action and the contained angle between the vertical of perpendicular to thigh is less relatively, just also make this reverse action in forming the oblique force effect component that is located thigh incline direction and perpendicular to thigh ascending vertical force effect component, vertical force effect component is bigger, it is littleer correspondingly to suffer from the frictional force effect that receives the effect of oblique force component between side thigh and the thigh supporting component, the comfort is strong during the walking, and make full use of ground reaction force, laborsaving during the walking.

In the present application, the backbone support includes a frame/first support plate near the end where the thigh support assembly and the lower leg support assembly are located. The first support plate has at least an end surface extending vertically upward from a first end to a second end thereof. The end face has a third radian which is bent towards the affected side when the user wears the device. The end face may be an end face perpendicular to the YZ plane. On this basis, in the case of viewing the device perpendicularly to the YZ plane, the angle between the tangential direction formed by the end face of the backbone support in its direction of extension and the Z axis/vertical direction has at least a decreasing trend. More specifically, in a case where the device is viewed perpendicularly to the YZ plane, an angle between a tangential direction formed by the end surface of the trunk support in the extending direction thereof and the Z axis/vertical direction tends to gradually increase and then gradually decrease. Preferably, the end face forms a non-acute angle between a tangential direction of the first end portion in the extending direction and the Z axis.

Preferably, the third radian enables the upper end and the lower end of the frame body of the main frame support to be located in the same vertical direction. That is, the first end and the second end of the first supporting plate are both located in the same vertical direction. Thereby the focus on the first backup pad is relatively stable, is favorable to helping the user to maintain the stability when walking.

Preferably, the frame body on the main frame near the end where the thigh support assembly and the shank support assembly are located has a fourth radian which is different from the third radian and is bent towards the side where the affected side is located when the user wears the device, so that the end surface of the vertical top end of the main frame is in an inclined posture.

The device proposed in this application designs the backbone support/first support plate as a plate-like structure with a third and fourth arc simultaneously. The plate-like structure is arranged in such a way that the plate body thereof is approximately parallel to the YZ plane. Two end faces of the plate body structure in the Y-axis direction are both in a bent shape and have different bending angles. At different bending angles, a top end surface of the vertical top end in an inclined posture is formed. The top end surface has two ends of a high end and a low end. The thigh support assembly is connected to a higher end of the top end surface. The lower leg support assembly is connected to a lower end of the top end face. The side/end of the first support plate adjacent the thigh support assembly has a third arc. The side/end surface of the first support plate adjacent the calf support assembly has a fourth arc. The fourth arc is greater than the third arc. That is, the sides/end of the first support plate that are closer to the calf support assembly are more curved so that their lower ends are closer to the position of the calf than their higher ends. Under the above arrangement, on one hand, the inclined top end face forms a space capable of avoiding the thigh on the affected side, so that the influence of the main support on the lifting height of the thigh on the affected side can be avoided, and on the other hand, the plate-shaped structure with a certain thickness is adopted, so that the volume of the whole part of the device exceeding the body range of a user is reduced, the structural strength and stability of the whole device are improved, and the problem of unbalance in use is avoided. Meanwhile, one end point of the top end surface under the inclined posture is closer to the crus, and the crus can be restrained by adopting a crus support assembly with smaller overall length. Because along with the extension of connecting length, the stability of connecting piece reduces gradually, consequently can adopt correspondingly to strengthen the constraint stability of device to the shank under the less shank supporting component's of whole length condition, the shank is difficult for receiving external force to influence and changes the angle between it and the thigh, is favorable to ensureing recovered effect. In addition, under the structural design of the main support/the first supporting plate provided by the application, most of the device is positioned under the thigh at the affected side, so that the position between the legs or the side legs can not be affected, and the quick adaptation and use of a user are facilitated. The utility model provides a first backup pad can also carry out the fretwork to it, reduces the weight of first backup pad on supporting little basis of influence to mechanics.

Preferably, the thigh support assembly further comprises a thigh link and a thigh support, the thigh link having a first fulcrum for connection with the trunk support and at least three second fulcrums for connection with the thigh support, wherein the at least three second fulcrums are spaced apart along the length of the affected thigh supported in the thigh support.

The device provided by the application supports the thigh on the affected side through at least three fulcrums, the thigh on the affected side can be covered on the rear side close to the hip, the front side close to the knee joint and the middle part of the thigh on the affected side, and the thigh on the affected side is supported in a large area to disperse the stress of the thigh on the affected side. Furthermore, an included angle between two virtual connecting lines formed by any one second supporting point and any other two second supporting points is an acute angle. Namely, the three second supporting points are respectively connected to corresponding positions on the thigh support in a way of jointly surrounding to form an imaginary triangular supporting surface. By providing different spatial arrangements of the second fulcrums, a more stable support structure is formed, enabling a more stable control of the device for the user. In the present application, the fulcrum is not a single point-like support, but a support area formed by a plurality of points. In the present application, the thigh link includes a positioning portion formed with a first fulcrum and a plurality of supporting portions formed with a second fulcrum. The plurality of supporting portions are connected to a top area on the positioning portion, as shown in fig. 1, the respective corresponding connection positions of the plurality of supporting portions in the top area are different, and the top area can be understood as a first fulcrum in the present application.

Preferably, the frame body on the main frame bracket close to the end part where the thigh support component and the shank support component are located is a first support plate. The frame body at the end part, far away from the thigh supporting assembly and the shank supporting assembly, of the main support is a second supporting plate. One end of the second supporting plate is rotatably connected with one end of the first supporting plate.

Preferably, a first working included angle and a second working included angle are formed between the second supporting plate and the first supporting plate, and the bending directions of the bending parts of the second supporting plate under different working included angles are different from each other.

Preferably, the thigh support assembly comprises at least a thigh support and a flexible layer laid on the inner side of the thigh support.

Preferably, the flexible layer is removably attached to the thigh rest by a zipper arrangement.

Preferably, the walking aid further comprises a foot support assembly, the foot support assembly is arranged at the vertical bottom end of the main support and is provided with a foot connecting frame and two elastic pieces.

Preferably, the elastic piece is of a multi-layer wave spring structure, and the thickness or the rigidity of each layer of wave spring structure in the vertical direction has an increasing trend. The relatively greater thickness or stiffness of the single layer wave spring near the ground provides a more stable ground reaction force against the ground after kicking the ground for the user. The relatively small thickness or stiffness of the single layer wave spring near the foot provides better cushioning of the user from the ground. The thickness refers to the thickness of a section of the single-layer wave spring, and is not the wave thickness between the highest point and the lowest point of the single-layer wave spring in the vertical direction.

Drawings

FIG. 1 is a simplified overall schematic diagram of a lower limb rehabilitation walker as proposed by the present invention;

fig. 2 is a simplified exploded view of the connection between the thigh support assembly and the trunk support proposed by the present invention;

FIG. 3 is a simplified schematic diagram of the connection relationship between the second support plate and the first support plate according to the present invention;

FIG. 4 is a simplified cross-sectional structural schematic of the proposed adjustment mechanism;

FIG. 5 is a simplified schematic diagram of the connection between the second support plate and the third support plate proposed in the present invention;

FIG. 6 is a simplified schematic view of the bottom of the foot support assembly set forth in the present invention;

FIG. 7 is a simplified overall schematic of the wave spring of the present invention;

FIG. 8 is a simplified partial schematic structural view of the thigh support assembly of the present invention;

FIG. 9 is a simplified schematic view of a lower limb rehabilitation walker as proposed by the present invention.

List of reference numerals

1: a trunk support; 2: a thigh support assembly; 3: a lower leg support assembly; 4: a thigh support; 5: a thigh mount; 6: a thigh link; 7: adjusting the fastening structure; 8: operating the screw; 9: a pinned screw; 10: a convex table; 11: a pin slot; 12: a through hole; 13: a flexible layer; 14: a zipper structure; 15: a foot support assembly; 16: a foot connecting frame; 17: a rebound mechanism; 18: an elastic member; 19: a wave spring; 20: a first U-shaped frame; 21: a second U-shaped frame; 22: a separation space; 23: an anti-slip layer; 24: a first support plate; 25: a second support plate; 26: a third support plate; 27: a first bend; 28: a second bend; 29: a button; 30: a central shaft; 31: a thigh link; 32: a first fulcrum; 33: a second fulcrum.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings.

As shown in figure 1, the application provides a lower limb rehabilitation walking aid which can assist a patient needing a brace when the ankle and the knee are moderately injured, is suitable for various environments, and can walk on the ground as well as go up and down stairs. The relative posture between the thigh and the shank can be adaptively adjusted according to the use feeling of the patient, and the chair is comfortable to use and is suitable for different rehabilitation postures. Meanwhile, the walking aid can prevent the affected side leg from being stressed excessively, so that the affected side leg can be recovered. The walking aid disperses the acting force of the supporting piece and the like to the thigh and the crus of the affected side leg, avoids local stress, provides larger supporting area, further disperses the acting force which can be applied when the affected side leg walks, and improves the comfort. The walking aid can be suitable for patients with the left leg or the right leg as the affected side leg through conversion, the utilization rate is high, and the problem of medical resource waste caused by the fact that two types of walking aids suitable for the left leg and the right leg need to be designed respectively in the prior art is solved.

The lower limb rehabilitation walking aid mainly comprises a main support 1, a thigh supporting assembly 2 and a shank supporting assembly 3. The thigh supporting component 2 and the shank supporting component 3 are respectively and movably connected on the main bracket 1.

The thigh support assembly 2 comprises a thigh support 4 and a thigh mount 5. The thigh support 4 can provide a stable supporting function with a large supporting area for the thigh. The thigh mount 5 is detachably attached to the thigh rest 4. The thigh support 4 and the thigh fixing part 5 are fixed relatively and surround to form a thigh placing space.

At the outer edge of the thigh mount 5 at least one thigh link 6 is arranged. The thigh link 6 is connected at both ends thereof to the thigh fixing part 5 and the thigh support 4, respectively, so as to be relatively fixed.

The thigh link 6 may be an existing buckle or a backpack strap with an adjusting buckle, and the application is not particularly limited. For example, the thigh links 6 may be resilient material with removable chuck hooks. For example, the thigh link 6 may be a user-owned fixing cord.

Preferably, at least one thigh link 6 is provided on both sides of the thigh mount 5. Preferably, only one side of the thigh fixing part 5 is provided with a thigh connecting part 6, and the other side is rotatably connected with the thigh support 4.

The thigh support assembly 2 further comprises a thigh link 31. One end of the thigh connecting frame 31 is fixedly connected with the lower end surface of the thigh support 4. The other end of the thigh connecting frame 31 is movably connected to the main frame 1. The thigh link 31 is rotatable relative to the trunk 1.

When the auxiliary device proposed by the prior art is used, the supporting rod only supports the rear side of the local thigh close to the knee, so that not only can the patient feel uncomfortable due to local stress, but also most of the body weight needs to be borne by the leg with the healthy side when the patient stands, the use feeling is poor, and the rehabilitation process causes excessive stress on the leg with the healthy side. In this respect, in the present application, the thigh link 31 has one first fulcrum 32 for connection with the trunk 1 and at least two second fulcrums 33 for connection with the thigh rests 4. Thigh link 31 is equivalent to the stable triangular structure that forms between thigh support 4 and trunk support 1, through the supporting role of a plurality of second fulcrums 33, can hold the thigh steadily, and bearing area is big not only is favorable to promoting to use the comfort to avoid the excessive atress of strong side leg, can make equipment realize more lightweight requirement simultaneously under this structure. Although the auxiliary device proposed in the prior art can also extend its thigh support platform upwards to satisfy a large support area, it increases the weight of the apparatus at the same time, and cannot achieve the lightweight of the auxiliary device of the present application.

The auxiliary device proposed in the above patent, in which the lower leg is naturally suspended along the support rod, the support rod can only restrain the lower leg to avoid the lower leg from shaking, and the weight of the lower leg is basically stressed by the knee and the thigh, and is especially not suitable for the patient who needs to reduce the stress of the knee as much as possible due to the moderate damage of the knee. In contrast, in the present application, the lower leg support assembly 3 is also indirectly fixed to the main support 1 by using a connecting frame, and the lower leg connecting frame is used in cooperation with the lower leg support, so that the weight of the lower leg can be unloaded onto the main support 1 through the lower leg connecting frame, and the stress on the upper leg and the knee can be reduced.

The joint between the thigh link 31 and the trunk support 1 is provided with an adjusting fastening structure 7. The adjustment fastening structure 7 comprises an operating screw 8 and a pinned screw 9 cooperatively connected to each other. The pinned screw 9 refers to a screw provided with a boss 10 on the shank structure for limiting. The operating screw 8 refers to a screw for manual operation by a person.

The main bracket 1 is provided with a pin slot 11. The pin grooves 11 are adapted to the cams 10 on the bolt 9. The pin slot 11 serves to prevent relative rotation between the pinned screw 9 and the backbone bracket 1.

The bolt 9 with the pin is provided with a threaded hole, the rod part structure of the operating bolt 8 is provided with threads, and the operating bolt 8 is matched with the threaded hole. The operator can turn the operating screw 8 to position the thigh link 31 on the trunk stand 1.

The pinned screw 9 may be fitted to the main frame 1 from the left or right side of the main frame 1, and the operation screw 8 may be oppositely disposed at the right or left side of the main frame 1. That is, the user can select to dispose the operating screw 8 on the right or left side of the trunk stand 1 so that the user who is accustomed to using the left or right hand can operate with the comfort side hand of the user.

The thigh connecting frame 31 is provided with a through hole 12 at the end part matched with the main bracket 1. The diameter of the through hole 12 is slightly larger than the diameter of the pinned screw 9. Thereby ensuring mobility of the thigh support assembly 2.

Preferably, there is a non-smooth contact between the thigh link 31 and the trunk support 1. That is, the end surfaces of the thigh link 31 and the trunk mount 1 that are in contact with each other are preferably rough surfaces or uneven surfaces. The relative rotation between the thigh connecting frame 31 and the main frame 1 can be realized by loosening the operating screw 8.

Preferably, the through hole 12 of the thigh link 31 may have the same diameter as the through hole with the pin slot 11 of the main frame 1, and the through hole 12 is opened with a plurality of pin slots 11 along its inner edge, which are all matched with the convex table. Namely, the relative rotation between the thigh connecting frame 31 and the main frame 1 can be realized by taking out the bolt 9 with the pin.

The structure of the lower leg support assembly 3 is similar to that of the thigh support assembly 2, the connection structure between the lower leg support assembly 3 and the trunk support 1 is similar to that between the thigh support assembly 2 and the trunk support 1, and the detailed structure of the lower leg support assembly 3 is not repeated herein. The shank link and the thigh link 31 are connected to different positions on the vertical top end of the trunk support 1, respectively.

The calf support and calf fastener included in the calf support assembly 3, and the thigh support 4 and thigh fastener 5 can each be shaped like a parabolic cylinder. Thereby being better suitable for human body wearing and improving the comfort.

The shank support, the shank fixing piece, the thigh support 4 and the thigh fixing piece 5 are all paved with flexible layers 13. The flexible layer 13 is preferably of soft leather. The flexible layer 13 is often in contact with a user and is easily contaminated by dirt, and the soft leather material can provide the characteristic of easy cleaning while keeping the comfort.

The flexible layer 13 is detachably fastened to the calf support, calf fastener, thigh support 4 and thigh fastener 5 by means of a zip-fastener arrangement 14. The zipper arrangement 14 is provided along the outer edges of the calf support, calf fastener, thigh support 4 and thigh fastener 5. The zip noise is little, compares in prior art and adopts the magic to detain as the brace of main fixed mode, and the operation is more random, wears to take off conveniently. The zipper can be used repeatedly, and has longer and more stable service life compared with a magic buckle. The magic is detained and is easily taken place the adhesion deviation, leads to the magic to collude other article adhesions such as face and clothes, and under the comparison, the zip that this application adopted uses the good reliability, and the convenience is high.

Preferably, the flexible layer can be formed by a contact layer, an interlayer and a bottom layer which are sequentially overlapped from top to bottom. The contact layer can be a laminated composite made of one or more of leather layer, top textile fabric layer, top weaving fabric layer, elastic laminated object made of silica gel foam or sponge or memory cotton or EVA or latex foam or rubber. The bottom layer can be a porous silica gel layer made of silica gel or a layered composite made of one or more of a porous silica gel net layer made of silica gel, a rubber layer, a bottom textile fabric layer and a bottom woven fabric layer. The bottom surface of the bottom layer can be provided with anti-skid projections or anti-skid holes or anti-skid convex edges. The interlayer can be a layer formed by extrusion molding or injection molding of mineral powder, plastics and other raw materials capable of releasing negative ions.

The lower extremity rehabilitation walker also includes a foot support assembly 15. The foot supporting component 15 is arranged at the vertical bottom end of the main support 1 and is used for stably supporting the ground and providing a main assisting effect for the walking of the patient.

Foot support assembly 15 includes a foot link 16 and a resilient mechanism 17. Foot link 16 is fixedly attached to resilient mechanism 17 to transmit the force applied thereto in an upward or downward direction.

The resilient mechanism 17 is provided with a deformation recoverable elastic member 18. The elastic member 18 is in particular a wave spring 19. With the same amount of deformation, the volume of the wave spring 19 is much smaller than that of a conventional coil spring, thereby greatly saving the space occupied by the foot support assembly 15.

The elastic member 18 is a multi-layer wave spring 19. The single-layer wave spring 19 is an elastic element with a plurality of wave crests and wave troughs on a metal ring, and the multi-layer wave spring 19 is composed of a plurality of single-layer wave springs 19.

The resilient mechanism 17 includes a first U-shaped frame 20 and a second U-shaped frame 21. The two U-shaped frames are fixedly connected with each other in a way that the U-shaped openings face away from each other. The elastic member 18 is installed inside the U-shaped frame. The stress law of the front sole and the rear sole of the human foot during walking is simulated to the maximum extent.

Two ends of the foot connecting frame 16 are respectively fixedly connected to the first and second U-shaped frames. The U-shaped frame may be a material with certain hardness, such as alloy or rubber, which can be elastically deformed.

The shelf of foot link 16 is recessed towards the side away from resilient mechanism 17 such that a clearance space 22 remains between the shelf of foot link 16 and resilient mechanism 17. Thereby allowing the U-shaped frame to deform towards the interspace 22.

People have 3 ~ 5 cm's the vertical direction when walking fluctuation, and the foot supporting component 15 that this application provided can simulate people's gait law betterly.

An anti-skid layer 23 is arranged on the end face of the U-shaped frame, which is in contact with the ground. The anti-slip layer 23 mentioned in the present application may be made of an existing material for anti-slip, and is not particularly limited to a certain type of material. For example, the anti-slip layer 23 may preferably be an anti-slip fleece pad or a gecko webbed biomimetic design-related structure.

The backbone support 1 includes a first support plate 24, a second support plate 25, and a third support plate 26, which are connected in sequence. One end of the second support plate 25 is opened with an open hollow, one end of the third support plate 26 is slidably connected in the hollow of the second support plate 25, and the other end is connected to the foot connecting frame 16. The third support plate 26 and the second support plate 25 may be fixed relative to each other, and in the case where the fixed relationship is released, the third support plate 26 may move up and down relative to the second support plate 25 and may return to the fixed relationship therebetween at a desired position. Therefore, the overall height of the product can be flexibly adjusted, and the product is better suitable for different wearers.

The connection between the third support plate 26 and the second support plate 25 may be the above-described manually adjustable adjustment fastening arrangement 7. Or the existing freely telescopic fixed structure can be adopted, and the structural design is not the improvement point of the application, so the application is not limited to the specific structure. For example, the second support plate 25 and the third support plate 26 are both provided with an elongated through hole, the elongated through hole extends vertically, and two inner wall surfaces of the elongated through hole extending vertically are respectively provided with a plurality of pin grooves corresponding to each other, where the adjusting and fastening structure 7 has two convex platforms opposite to each other on the pin screw for matching with the pin grooves on the inner wall surfaces of the elongated through hole to fix the relative positions of the third support plate and the second support plate.

The second support plate 25 has two bent portions, and the bent portions of the two bent portions are opposite to each other. The bending angles of the bent portions of the second support plate 25 are all obtuse angles. A first bend 27 in the second support plate 25, which is closer to the first support plate 24, is bent away from the plane of the first support plate 24. The plane of the third support plate 26 is different from the plane of the first support plate 24. A second bend 28 in the second support plate 25, remote from the first support plate 24, is bent towards a direction close to the plane in which the first support plate 24 lies.

The second support plate 25 and the first support plate 24 may be connected to each other by a central shaft 30. The second support plate 25 may be fixed relative to the first support plate 24 without affecting the walking assistance to the patient. With the fixed relationship released, the second support plate 25 can carry the third support plate 26 with the foot support assembly 15 for rotation relative to the first support plate 24.

Under the condition that the second supporting plate 25 is fixed relative to the first supporting plate 24, a first working included angle and a second working included angle are formed between the second supporting plate 25 and the first supporting plate 24. The two working included angles are respectively 180 degrees and 0 degree.

An adjustment mechanism or a top-to-bottom pivot mechanism is provided in one end of the first support plate 24. One end of the top-bottom rotating shaft mechanism penetrates through the plate body of the first supporting plate 24, and a button 29 for operation of a user is arranged on the end. The top and bottom rotating shaft mechanism can be an existing top and bottom lock structure or an existing elastic pressing structure similar to a pressing pen. The present application does not suggest any improvement as long as it can be used as a top-to-bottom hinge mechanism by a structure that can be locked and unlocked by repeated pressing, and therefore, the present application does not limit the specific structure thereof.

The top and bottom rotating shaft mechanism comprises a button 29 and at least one movable column shaft in linkage connection with the button. The number of movable column shafts is preferably two. The shape of the movable post shaft is preferably cylindrical.

When the button 29 is pressed, at least one movable shaft is inserted into the second support plate 25, which can function as a fixed angle. When the button 29 is pressed again, all the movable axes are raised, and the user can rotate the second supporting plate 25 from the first working angle to the second working angle. The button 29 is pressed again and the movable post shaft is inserted into the second support plate 25, limiting the second support plate 25 to a designated working angle.

The main frame of the walking aid can be made of light high-strength materials such as aluminum alloy materials, and the strength is guaranteed while the weight of the walking aid is reduced.

When in use, the walking aid can be adjusted to be in a posture convenient for the affected leg to use by selectively adjusting the working included angle of the second supporting plate 25. The operator can select the mounting direction of the fastening structure to facilitate the assembly and adjustment operations. After the affected leg is correspondingly placed on the thigh support 4 and the shank support, the shank support and the shank fixing piece, and the thigh support 4 and the thigh fixing piece 5 are respectively and correspondingly connected and fixed, so that the wearing is completed. The sick side leg can walk stably by means of the rebounding mechanism 17 at the bottom of the walking aid, the foot of the sick side leg does not need to be in direct contact with the ground, further damage to the sick side leg is avoided, and recovery of the sick side leg is facilitated.

It should be noted that the above-mentioned embodiments are exemplary, and that those skilled in the art, having benefit of this disclosure, may devise various solutions which are within the scope of this disclosure and are within the scope of the utility model. It should be understood by those skilled in the art that the present specification and figures are illustrative only and are not limiting upon the claims. The scope of the utility model is defined by the claims and their equivalents.

Claims (10)

1. A lower limb rehabilitation walking aid, at least comprises a main support (1),

characterized in that the walking aid further comprises a thigh supporting component (2) and a crus supporting component (3) which are respectively contacted with the affected side from the affected side thigh rear side and the affected side crus rear side and are both assembled at the same end part of the main support (1) under the condition that the walking aid is worn on the affected side,

the frame body at the end part of the main support (1) far away from the thigh support assembly (2) and the shank support assembly (3) is provided with a first radian and a second radian which are mutually bent and face away from each other.

2. The lower limb rehabilitation walker according to claim 1, wherein the frame body of the main frame (1) near the ends of the thigh support assembly (2) and the lower leg support assembly (3) has a third curvature which is curved towards the affected side in the use position of the walker worn by the user.

3. The lower limb rehabilitation walker according to claim 2, characterized in that the frame body of the main frame (1) near the ends of the thigh support assembly (2) and the lower leg support assembly (3) has a fourth curvature different from the third curvature which is curved towards the affected side in the use state of the device worn by the user, which causes the end surface of the vertical top end of the main frame (1) to assume an inclined position.

4. The lower limb rehabilitation walker according to claim 3, wherein the thigh support assembly (2) further comprises a thigh link (31) and a thigh support (4), the thigh link (31) having one first fulcrum (32) for connection with the trunk support (1) and at least three second fulcrums (33) for connection with the thigh support (4), wherein the at least three second fulcrums (33) are spaced apart along the length of the affected thigh supported in the thigh support (4).

5. The lower limb rehabilitation walker as claimed in claim 4, wherein the frame body of the main support (1) close to the end where the thigh support assembly (2) and the shank support assembly (3) are located is a first support plate, the frame body of the main support (1) far away from the end where the thigh support assembly (2) and the shank support assembly (3) are located is a second support plate, and one end of the second support plate (25) is rotatably connected with one end of the first support plate (24).

6. The lower limb rehabilitation walker according to claim 5, characterized in that the second support plate (25) has a first working angle and a second working angle with the first support plate (24), and the bending directions of the bends of the second support plate (25) at different working angles are different from each other.

7. The lower limb rehabilitation walker according to claim 6, characterized in that the thigh support assembly (2) comprises at least a thigh support (4) and a flexible layer (13) laid on the inside of the thigh support (4).

8. The lower limb rehabilitation walker according to claim 7, characterized in that the flexible layer (13) is detachably connected to the thigh support (4) by means of a zip-lock arrangement (14).

9. The lower limb rehabilitation walker according to claim 8, further comprising a foot support assembly (15), wherein the foot support assembly (15) is provided at the vertical bottom end of the main support (1) and has a foot connecting frame (16) and two elastic members (18).

10. The lower limb rehabilitation walker according to claim 9, characterized in that the elastic member (18) is of a multi-layer wave spring structure, and the thickness or stiffness of each layer of the wave spring structure has an increasing trend in the vertical direction.

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