CN215384935U - Knee joint brace - Google Patents

Abstract

The utility model provides a knee joint brace, which is characterized by comprising: a thigh support to be worn on a thigh; a lower leg support to be worn on the lower leg; the thigh support is provided with two thigh supporting strips which are respectively positioned at two side positions of a thigh, the shank support is provided with two shank supporting strips which are respectively positioned at two side positions of a shank, the connecting part is provided with two adjusting mechanisms which respectively connect the thigh supporting strips and the shank supporting strips at the same side in a rotating manner, an included angle is formed between rotating planes of the two adjusting mechanisms, the thigh support is also provided with an elastic belt, two ends of the elastic belt are respectively connected to the two thigh supporting strips, and the position of the elastic belt corresponds to the position, close to a knee, of the front side of the thigh of a user. The knee joint brace disclosed by the utility model can adapt to the change of the contour of the thigh in flexion and extension movements, can overcome the defect of easiness in slipping down and loosening, and improves the wearing comfort of a user.

Description

Knee joint brace

Technical Field

The utility model belongs to the field of medical instruments, and relates to a knee joint brace.

Background

The knee joint brace is a common assistive device worn on the lower limb of a human body, and has the functions of correcting deformity, improving gait, lightening or eliminating the knee joint so as to protect the knee joint, promoting the functional recovery of the lower limb and the like.

In order to achieve wearing, a knee brace generally includes a thigh brace fixed to a thigh of a user, a lower leg brace fixed to a lower leg of the user, and a connecting portion connecting the thigh brace and the lower leg brace. Meanwhile, the connecting part usually comprises two adjusting components which are respectively arranged on two sides of the leg part and correspond to the knee position, so that the thigh support and the shank support can rotate, and the leg connecting device is suitable for flexion and extension movements of the leg part of the human body.

In the actual process of bending and stretching motion of the legs of the human body, the section profile of the thigh changes along with the change of the bending state, which is specifically represented as follows: in the curved state of the leg, particularly during the squatting movement, the tissues of the thigh are squeezed and the cross-sectional profile is significantly greater than the straightened state of the leg, and conventional knee braces are generally difficult to adapt to such changes in the cross-section of the thigh, thereby making it difficult to conform well to the leg profile.

In view of the above problems, the inventor of the present invention has devised and applied for a knee joint brace having a thigh skeleton, a calf skeleton, and a connecting structure disposed between the thigh skeleton and the calf skeleton, wherein the connecting structure includes an adjusting mechanism and a connecting hinge, an included angle α between rotation planes of the adjusting mechanism is 50 °, and when worn, the two adjusting mechanisms are located at a position 1/3 in front of the knee joint in the front-rear direction (CN 106535833A). From this, two adjustment mechanism's rotation plane demonstrate in fact and are similar to the state of opening backward, can make vertical branch in the thigh skeleton paste tight thigh from the shank front side to in-process expansion or shrink that the shank bends and stretches, thereby the better laminating thigh, let the user feel more comfortable.

Most knee braces are easy to slide down due to gravity when in use. In the knee joint brace designed by the inventor, the knee joint brace is easy to integrally slide down under the influence of gravity; moreover, when the leg of the user is straightened, the thigh support is in a shape with a small lower part and a large upper part, the upper part of the thigh support is abutted against the thigh of the user, so that the knee joint brace loads the weight part of the thigh of the user, the thigh support cannot move upwards relative to the thigh at the moment, but the shank support can move downwards relative to the shank more easily. Therefore, compared with the conventional knee joint brace, the knee joint brace is more prone to slide and move downwards due to the fact that the legs are not bent or stretched continuously in the wearing process, and a user has to adjust the wearing state frequently to avoid the whole loosening.

SUMMERY OF THE UTILITY MODEL

In order to overcome the problems, the utility model provides a knee joint brace, which adopts the following technical scheme.

The utility model provides a knee joint brace, which is characterized by comprising: a thigh support to be worn on a thigh; a lower leg support to be worn on the lower leg; the thigh support is provided with two thigh supporting strips which are respectively positioned at two side positions of a thigh, the connecting part is provided with two adjusting mechanisms which can rotatably connect the thigh supporting strips with the shank support, an included angle is formed between rotating planes of the two adjusting mechanisms, the thigh support is also provided with an elastic belt, two ends of the elastic belt are respectively connected with the two thigh supporting strips, and the position of the elastic belt corresponds to the position, close to a knee, of the front side of the thigh of a user.

The knee joint brace provided by the utility model can also have the technical characteristics that the included angle between the rotating planes of the adjusting mechanism is 30-70 degrees.

The knee joint brace provided by the utility model can also have the technical characteristics that the included angle between the rotating planes of the adjusting mechanism is 50 degrees.

The knee joint brace provided by the utility model can also have the technical characteristics that the lower leg support is also provided with a flexible belt, two ends of the flexible belt are respectively connected with the two lower leg support bars, the length of the flexible belt can be adjusted, and the position of the flexible belt corresponds to the lower part of the front side of the lower leg of the user.

The knee joint brace provided by the utility model can also have the technical characteristics that one end of the flexible belt is fixed at the lower end of one shank branch bar, and the other end of the flexible belt is connected to the lower end of the other shank branch bar through a fixing piece capable of adjusting the length of the flexible belt.

The knee joint brace provided by the utility model can also have the technical characteristics that the thigh support is also provided with at least two thigh straps for connecting the two thigh branches from the rear side of the thigh of the user, and the shank support is also provided with at least two shank straps for connecting the two shank branches from the rear side of the shank of the user.

Utility model with the functions and effects

According to the knee joint brace provided by the utility model, because the rotation planes of the adjusting mechanism have included angles, the knee joint brace can adapt to the change of the thigh outline in the flexion and extension movement of the leg; furthermore, the thigh support is provided with the elastic belt connected to the thigh supporting strip, and the position of the elastic belt corresponds to the position, close to the knee, of the front side of the thigh of the user, so that the shank support can be pulled up through the retraction force of the elastic belt during each bending and stretching movement, the shank support is pulled up continuously during walking, the shank support is prevented from sliding downwards, the thigh support is prevented from being driven by the shank support to slide downwards, and the anti-loosening effect is achieved. Therefore, the knee joint brace disclosed by the utility model can adapt to the change of the contour of the thigh in flexion and extension movements, can overcome the defect of easiness in slipping down and loosening, and improves the wearing comfort of a user.

Drawings

FIG. 1 is a block diagram of a knee brace in accordance with an embodiment of the present invention;

FIG. 2 is a side view of a knee brace in accordance with an embodiment of the present invention;

FIG. 3 is a structural view of a strap buckle of an embodiment of the present invention;

FIG. 4 is a side view structural diagram of an adjustment mechanism of an embodiment of the present invention;

FIG. 5A is a schematic view of the rotation limitation of the adjustment mechanism when the leg of the user is extended to a position where the included angle between the legs is 110 °;

FIG. 5B is a schematic view of the rotational position of the adjustment mechanism with the legs of the user extended to a position where the included angle between the legs is 180 degrees;

FIG. 6 is an angle limit adjustment schematic of the adjustment mechanism of an embodiment of the present invention;

FIG. 7 is a schematic view of the angle between the planes of rotation of the adjustment mechanism of an embodiment of the present invention;

FIG. 8 is an exploded view of a connection hinge according to an embodiment of the present invention;

FIG. 9A is a schematic view of the knee brace of the present invention being worn on a user's leg without straightening impediment;

FIG. 9B is a schematic view of the knee brace of the present invention being worn on a user's leg with a straightening impediment;

FIG. 10 is a view showing the knee brace of the embodiment of the present invention in a state where the user's legs are flexed.

Reference numerals: 100-knee brace; 10-thigh support; 11-thigh branches; 12-thigh support; 13-thigh strap; 131-a strap buckle; 131A-a perforation; 1311-hook member; 132-a retaining buckle; 14-an elastic band; 20-a lower leg support; 21-calf branch; 22-calf support; 23-calf strap; 231-a strap buckle; 232-fixing buckle; 24-a flexible band; 241-a fixing piece; 30-a connecting portion; 31-an adjustment mechanism; 311-thigh link; 312-shank junction; 313-an outer cover; 3131-an adjuster mount; 314-a link member; 315-limit adjustment; 3151-an inner end; 32-a connecting hinge; 321-a first hinge part; 322-a second hinge part; 323-first pin; 324 — a second pin.

Detailed Description

The following describes a specific embodiment of the knee joint brace according to the present invention with reference to the drawings and examples. In the following description, the descriptions of the front, back, up, down, etc. directions are based on the direction of the user wearing the knee brace, wherein the direction in which the user faces is the front, and vice versa.

< example >

Fig. 1 is a structural view of a knee joint brace according to an embodiment of the present invention.

As shown in fig. 1, the knee brace 100 of the present embodiment includes a thigh brace 10, a lower leg brace 20, and a connecting portion 30 provided between the thigh brace 10 and the lower leg brace 20.

The thigh support 10 is worn on the thigh of the user in use, and includes a thigh support 11, a thigh support 12, a thigh strap 13, and an elastic band 14.

The number of the thigh branches 11 is two, and each thigh branch 11 is sheet-shaped and is arranged approximately along the up-down direction.

The thigh support 12 is strip-shaped, and two ends thereof are respectively fixedly connected with the upper ends of the two thigh supporting strips 11 and are formed into a whole.

Fig. 2 is a side view structural view of the knee joint brace according to the embodiment of the present invention.

As shown in fig. 1-2, the thigh support 12 has a relatively short length (e.g., less than half of the circumference of the thigh), so that the lower ends of the thigh branches 11 are located at the front of the thighs of the user when the thigh support 12 is worn, and accordingly, the connecting portion 30 is located at the front of the thighs of the user in the front-rear direction of the knee joint.

The number of the thigh straps 13 is two, and the two thigh straps 13 are both located on the rear side. Each of the thigh straps 13 has one end detachably connected to one of the thigh branches 11 via a strap buckle 131, and the other end detachably connected to the other thigh branch 11 via a fixing buckle 132.

Fig. 3 is a structural view of a band buckle according to an embodiment of the present invention. In fig. 3, most of the structure of the thigh brace 11 and the thigh strap 13 are omitted for clarity of illustration.

As shown in fig. 3, in the present embodiment, the thigh support 11 has a hanging hole (not shown), the strap buckle 131 is provided with a hook 1311 engaged with the hanging hole, and the strap 13 can be connected to the thigh support 11 by hanging the hook 1311 in the hanging hole. The strap buckle 131 is provided with two through holes 131A, and the end of the thigh strap 13 is passed through the two through holes 131A in sequence and then passed out, so that the end of the thigh strap 13 is fixed to the strap buckle 131. When in use, the hook member is firstly hung in the hanging hole, and then the end of the thigh strap 13 is pulled to pass through the part 131A, so that the thigh strap 13 can be tensioned after the thigh strap 13 is connected to the thigh brace 11, thereby the whole thigh support 10 can better adapt to the size of the thigh.

In addition, since the buckle 131 is fixed by hooking the hook 1311 into the hooking hole, the buckle 131 allows the end of the thigh strap 13 to rotate with respect to the thigh support; in this embodiment, the fixing buckle 132 is connected to the thigh brace 11 by means of a hinge, so that it enables the other end portion of the thigh strap 13 to rotate as well. This allows the entire thigh strap 13 to rotate relative to the thigh brace 11, and the user's thigh can be fitted better.

The number of the elastic bands 14 is one. The two ends of the elastic band 14 are fixed at the lower end positions of the two thigh branches 11, respectively, and the position of the elastic band 14 corresponds to the position of the front thigh of the user near the knee.

The lower leg support 20 includes a lower leg brace 21, a lower leg support 22, a lower leg strap 23, and a flexible band 24.

The number of the shank branches 21 is two, and each shank branch 21 is sheet-shaped, corresponds to two thigh branches, and extends approximately in the up-down direction.

The shank support 22 is strip-shaped, and two ends of the shank support are respectively fixedly connected with the upper ends of the two small push supporting bars 21 to form a whole.

The number of the calf straps 23 is two, the two calf straps 23 are both positioned at the rear side, and both ends of each calf strap 23 are respectively connected to the two calf braces 21 through a strap buckle 231 and a fixing buckle 232. In this embodiment, the structure of the strap fastener 231 is the same as that of the strap fastener 131, the structure of the fixing fastener 232 is also the same as that of the fixing fastener 132, and the connection and length adjustment mechanism of the calf strap 23 is the same as that of the thigh strap 13, which will not be described herein again.

The flexible band 24 is a flexible band-shaped member (e.g., canvas belt or the like) having no elasticity, and both ends thereof are fixedly connected to the lower ends of the two lower leg struts 21 by one fastener 241. The flexible band 24 is positioned to correspond to the lower anterior portion of the user's lower leg. The fastening element 241 is fastened in its entirety to the lower leg strut 21 in a rotationally fixed manner, so that the flexible band 24 cannot rotate relative to the lower leg strut.

In this embodiment, one of the two fixing members 241 is provided with a through hole, the surface of the flexible band 24 is provided with a galling, and the end surface corresponding to the fixing member with the through hole 241 is provided with a magic tape. When the length adjusting device is used, the end part with the magic tape penetrates through the hole penetrating part and then is reversely folded and adhered to the part with the napping, and then the length of the flexible belt 24 can be adjusted through adjusting the mutual adhesion position of the magic tape and the napping.

The number of the connecting portions 30 is two, and each connecting portion 30 includes an adjusting mechanism 31 and a connecting hinge 32.

Fig. 4 is a side view structural view of an adjustment mechanism according to an embodiment of the present invention, and in fig. 4, an internal structure that is not visible from the outside is indicated by a broken line in order to show the internal structure.

As shown in fig. 4, the adjusting mechanism 31 of the present embodiment is a limit adjustable brace hinge, and specifically includes a lower leg connecting portion 312, a thigh connecting portion 311, an outer cover 313, a link 314, and a limit adjusting member 315.

The lower leg connecting portion 312 is integrally formed with the upper end of the lower leg strut 21, and the thigh connecting portion 311 is connected to the lower end of the thigh strut 11 via the connecting hinge 32.

The outer cover 313 is formed by two cover sheets with the same shape, which are fastened together, and thus has a cavity structure inside. The upper end of the lower leg link 312 is hinged at a lower position inside the outer cover 313 by a first hinge shaft 316, and the lower end of the thigh link 311 is hinged at an upper position inside the outer cover 313 by a second hinge shaft 317.

The link member 314 is located in the outer cover 313, and has one end hinged to the lower leg link 312 via a third hinge 318 and the other end hinged to the upper leg link 311 via a fourth hinge 319.

As described above, the lower leg link 312, the upper leg link 311, the outer cover 313 and the link 314 are hinged to each other, and actually constitute a four-bar linkage. Such a four-bar linkage allows for arbitrary rotation between the lower leg link 312 and the thigh link 311 when not affected by external forces.

The spacing adjustment member 315 is insertedly disposed within the outer cover 313. Specifically, an adjusting piece mounting seat 3131 is formed at one side of the outer cover 313 in a protruding manner, and the adjusting piece mounting seat 3131 is provided with a threaded through hole penetrating through the outer cover 313; the spacing adjustment member 315 is a bolt that is threaded through the threaded through hole and thereby passes through the outer cover 313 and into the cavity within the outer cover 313. In addition, the remaining portion of the spacing adjuster 315 remains exposed outside the outer cover 313, and the position of the inner end 3151 of the spacing adjuster 315 inside the outer cover 313 can be adjusted by rotating the exposed portion to screw in or screw out the spacing adjuster 315.

Fig. 5A is a schematic view of the rotation limit of the adjustment mechanism when the leg of the user is extended to a position where the included angle between the thigh and the thigh is 110 °, and fig. 5B is a schematic view of the rotation limit of the adjustment mechanism when the leg of the user is extended to a position where the included angle between the thigh and the thigh is 180 °.

As shown in fig. 5A, in the state where the user's leg is flexed, since the adjuster mount 3131 is located at a position closer to the rear side of the outer cover 313, even if the stopper adjuster 315 is inserted into the outer cover 313 through the adjuster mount 3131, the inner end 3151 thereof does not obstruct the movement of the lower leg link 312 or the thigh link 311, and accordingly, the lower leg link 312, the thigh link 311, and the outer cover 315 are freely rotatable, so that the angle between the lower leg link 312 and the thigh link 311 can be changed. Therefore, the user can freely stretch the legs, so that the included angle between the thigh and the shank is gradually increased.

When the maximum extension is reached (i.e. the angle between the thigh and the calf is about 180 °), the inner end 3151 of the spacing adjuster 315 abuts against the rear side edge of the calf connecting portion 312, so that the outer cover 315 cannot rotate any further relative to the calf connecting portion 312, as shown in fig. 5B; at this time, the thigh link 311 cannot rotate relative to the shank link 312 any more under the combined restriction of the link 314 and the outer cover 313, that is, the included angle between the thigh link 311 and the shank link 312 is limited to the maximum extension angle of 180 °; accordingly, this angle is also the maximum angle that the user's leg can reach for extension.

Fig. 6 is an angle limit adjustment schematic diagram of the adjustment mechanism of the embodiment of the present invention, and fig. 6 shows a state where the maximum extension angle is limited to about 170 °.

When the user desires to adjust the maximum extension angle, the exposed portion of the spacing adjustment member 315 may be rotated, as shown in fig. 6, to screw the spacing adjustment member 315 into its inner end 3151 to a more inward position. In this case, when the user extends the leg, the inner end 3151 abuts the lower leg link portion when the extension angle has not reached 180 ° (the state of about 170 ° is shown in fig. 6), and the thigh link portion 311 and the lower leg link portion 312 are restricted from further rotation, that is, the maximum extension angle is adjusted to 170 °. In addition, since the link 314 and the stopper adjuster 315 of the present embodiment are offset from each other in the left-right direction (i.e., the direction perpendicular to the paper surface in fig. 6), the stopper adjuster 315 does not contact the link 314 and the effect of abutting against the lower leg link 312 is not affected.

FIG. 7 is a schematic view of the angle between the planes of rotation of the adjustment mechanism of an embodiment of the present invention.

As shown in fig. 7, the adjusting mechanism 31 enables the thigh support bar 11 and the shank support bar 21 to rotate relative to each other, and the rotation plane of the rotational movement is a plane perpendicular to the rotation axis of the rotational movement. In this embodiment, the angle α between the planes of rotation of the two adjustment mechanisms 31 is 50 °.

Fig. 8 is an exploded view of a connection hinge according to an embodiment of the present invention.

As shown in fig. 8, the connection hinge 32 of the present embodiment includes a first hinge portion 321, a second hinge portion 322, a first pin 323, and a second pin 324.

The first hinge portion 321 is fixed at the lower end of the thigh branch 11, the second hinge portion 322 is rotatably connected to the upper end of the thigh link portion 311 by the second pin 324, and the first hinge portion 321 and the second hinge portion 322 are rotatably connected by the first pin 323. The first pin 323 and the second pin 324 have different length directions, so that the connecting hinge 32 allows the thigh brace 11 and the thigh link 311 to rotate relative to each other about the first pin 323 (i.e., C-D axis) and also about the second pin 324 (i.e., a-B axis), i.e., the connecting hinge 32 is a two-degree-of-freedom hinge. The hinge 32 allows the thigh support 10 and the shank support 20 to accommodate the flexion and extension movements of the user's leg and the internal and external rotation movements of the knee joint, and the operation principle and effect thereof are the same as those described in the patent CN106535833A previously filed by the inventor, and will not be described herein again.

The working principle of the knee joint brace of the present embodiment is described below with reference to the drawings.

When the user wears the thigh strap 13 and the calf strap 23, the thigh brace 11 and the calf brace 21 are fastened by the corresponding strap buckles 131 and 231, respectively, and then the tightness of the thigh strap 13 is adjusted by the respective strap buckles 131, the tightness of the calf strap 23 is adjusted by the strap buckles 231, and the length of the flexible belt 24 is adjusted by the fixing piece 241. In general, in order to ensure the use effect of the knee brace 100, the thigh strap 13 needs to be adjusted to be slightly tight, and the elastic band 14 will be slightly stretched; further, the user needs to adjust the position of the lower leg brace 21 so that the two adjustment mechanisms 31 are securely attached to the front side of the knee joint, and then adjust the length of the flexible band 24 so that the degree of tightness of the flexible band 24 is appropriate and the lower part of the lower leg can be attached. The user may then also adjust the maximum extension angle by twisting the limit adjustment member 315.

Fig. 9A is a schematic view of the knee brace of the present invention being worn on a user's leg without straightening impediment, and fig. 9B is a schematic view of the knee brace of the present invention being worn on a user's leg with straightening impediment.

As shown in FIG. 9A, for the same knee brace 100, when worn on a user's leg without extension impediment (i.e., the user's leg can be extended normally), the fit may be better, and simple adjustment of thigh strap 13, calf strap 23, and flexible band 24 allows the various portions of knee brace 100 to fit around the user's leg. In contrast, when the leg support is worn on the leg of a user who has a straightening disorder (e.g., the knee joint is diseased and cannot be straightened), since the longitudinal directions of the thigh and the calf are not aligned with each other at the maximum straightening, even if the thigh support 10 is attached, the front side of the calf support 20 (i.e., the flexible band 24) protrudes outward and is difficult to attach. In this case, it is necessary to adjust the flexible band 24 more, shortening its length so that the lower leg support 20 as a whole also forms a good fit. I.e., the flexible band 24, may also function to adjust the maximum extension angle of the brace.

That is, the knee brace 100 of the present embodiment can be adapted to various leg shapes by adjusting the flexible band 24, and can be well fitted to the leg regardless of the maximum extension angle of the leg (i.e., the angle between the thigh and the calf in the longitudinal direction when the leg is maximally extended) of the user.

In addition, for some users who have knee joint hyperextension (that is, the knee joint angle is too large when straightening) and need to limit the hyperextension degree, the maximum extension angle can be limited through the adjusting mechanism 31, and the flexible belt 24 can be adjusted to be shorter when the user wears the device, so that the user can feel the blocking effect of the flexible belt 24 when straightening the leg each time, the user is prompted to control the leg to move, and the purpose of limiting the hyperextension better is achieved. Further, the degree of the obstruction can also be adjusted by adjusting the length of the flexible band 24: the shorter the flexible band 24 is adjusted, the earlier the leg straightening process is hindered; conversely, the longer the adjustment, the later the leg is felt to be blocked when it is straightened. Thus, while the maximum extension angle is limited by the adjustment mechanism 31, a prompt effect can be given accordingly by adjusting the length adjustment of the flexible band 24.

FIG. 10 is a view showing the knee brace of the embodiment of the present invention in a state where the user's legs are flexed.

As shown in FIG. 10, when the leg of the user bends, the thigh and the calf rotate, and the thigh tissue is compressed, the cross-sectional profile is increased, but the cross-section of the calf is hardly changed. Therefore, when the knee joint extends to bend, the thigh support rotates relative to the shank support, the thigh branches 11 are driven by the joint of the adjusting mechanism, so that the distance between the two thigh branches 11 is pulled, and the distance between the shank branches 21 is not changed; because the rotation planes of the adjusting mechanism 31 have an included angle of 50 degrees, the adjusting mechanism 31 makes the two thigh branches 11 expand outwards while allowing the thigh branches 11 and the shank branches 21 to rotate and translate along with the leg movement. Due to the connection function of the thigh support 33, the distance from the far end (the end far away from the adjusting mechanism 31) of the thigh support 11 hardly changes, but the distance from the middle part to the near end (i.e. the end near the adjusting mechanism 31) of the thigh support 11 increases, so that the thigh section change during the leg bending process can be adapted.

In the above process, the distance between both ends of the elastic band 14 is increased due to the expansion action of the thigh branches 11, so that the elastic band 14 is stretched; at this time, the elastic band 14 will generate a retraction force, which acts on the thigh branches 11, so that the two thigh branches 11 are lifted up at the same time, and the lifting action further acts on the lower leg branch 21 through the connecting hinge 32 and the adjusting mechanism 31, so that the lower leg branch 21 is also pulled up. Thus, each time the user flexes the leg, it is equivalent to pulling up on the lower leg support 20; when the user walks, the user pulls the lower leg support 20 continuously, even if the motion amplitude of the lower leg is usually large, the continuous pulling action can ensure that the lower leg support 20 does not slide down, and further, the lower leg support 20 is prevented from driving the thigh support 10 to slide down.

Effects and effects of the embodiments

According to the knee joint brace provided by the embodiment, because the included angle is formed between the rotating planes of the adjusting mechanism, the knee joint brace can adapt to the change of the thigh outline in the leg flexion and extension movement; furthermore, the thigh support is provided with the elastic belt connected to the lower end of the thigh supporting strip, and accordingly the position of the elastic belt corresponds to the position, close to the knee, of the front side of the thigh of the user, so that the shank support can be pulled upwards through the retraction force of the elastic belt during each flexion movement, the shank support is pulled upwards continuously during walking, the shank support is prevented from sliding downwards, the thigh support is prevented from being driven by the shank support to slide downwards, and the anti-loosening effect is achieved. From this, the knee joint brace of this embodiment not only can be adapted to the change of the thigh profile in the motion of stretching and flexion, can also overcome the shortcoming of easy gliding pine and take off, promotes user's the comfort of wearing.

In the embodiment, because the shank support still has the flexible band that corresponds with user's shank front side lower part, this flexible band length is adjustable, consequently, not only can let straighten the obstacle user and also form good laminating through the length adjustment of flexible band, can also form the suggestion of hindering to the user that has knee joint hyperextension through the flexible band, let the user can notice the shank action. Therefore, the knee brace of the embodiment can be well applied to users with special conditions of extension disorder or hyperextension of the knee joint.

The above embodiments are provided to illustrate specific embodiments of the present invention, and the knee brace of the present invention is not limited to the forms described in the above embodiments.

For example, the adjusting part of the embodiment adopts the adjusting mechanism and the connecting hinge designed by the inventor in the past, compared with the rotating connecting structure in the conventional knee joint brace, the adjusting mechanism can allow rotation and translation to play a load-free role, and the connecting hinge has two degrees of freedom and can be better adapted to the internal rotation and external rotation functions of the knee joint. In the present invention, however, the adjustment mechanism may be replaced with a conventional rotational connection structure (e.g., a hinge shaft), and the attachment hinge may be replaced with a conventional one-degree-of-freedom attachment hinge, or even eliminated. In the utility model, the adjusting part can play the same role as the embodiment as long as the adjusting part is provided with the adjusting mechanism which can rotatably connect the thigh branch and the shank branch at two sides, and the rotating plane between the two adjusting mechanisms has a certain included angle.

In addition, the angle between the above-mentioned planes of rotation is not limited to 50 ° mentioned in the embodiment, and may be any angle between 30 ° and 70 ° in the present invention, which can perform the same function as the embodiment.

In an embodiment, the ends of the thigh strap and the calf strap are connected to the thigh or calf brace by a strap buckle having a hook. However, in the present invention, the strap can be connected by a conventional hook, or an additional length adjusting buckle can be arranged on the strap after the strap is directly fixed and connected, as long as the connection and length adjustment of the strap can be realized. Similarly, the two ends of the flexible belt in the embodiment are respectively fixed on the shank supporting strip through the fixing buckles, and the length can be adjusted through one of the fixing buckles, but the flexible belt can also adopt a mode that a binding belt buckle with a hook is detachably fixed, or a mode that the two ends are respectively fixedly connected and then an additional length adjusting buckle is arranged.

In addition, in the embodiment, the lower leg support is provided with the flexible belt, so that good fit can be well formed for users with straightening obstacles or proper obstruction prompts can be well formed for users with over-extending knee joints. However, in the present invention, the lower leg support can be replaced by a conventional lower leg support, that is, the flexible belt is replaced by a rigid strip similar to the lower leg support, and such replacement cannot achieve the effect of the flexible belt in the embodiment, but does not affect the pull-up action of the elastic belt, so that the downward sliding can still be effectively avoided.

Furthermore, in the embodiment, the adjusting mechanism is a limit adjustable brace hinge capable of adjusting the maximum extension angle, the extension angle of the leg of the user can be limited to the maximum extension angle, and the maximum extension angle can be adjusted. In the present invention, other types of angle-limitable limit hinges may be used, or conventional hinges without limiting function may be used instead. When a conventional hinge is used, the flexible strap functions to limit the maximum extension angle, i.e., the maximum angle at which the user extends the leg by interference; at this time, the user can also adjust the maximum extension angle by adjusting the length of the flexible band.

In addition, the number of the elastic belts and the number of the flexible belts in the embodiment are both one, but in the present invention, the number of the elastic belts and the number of the flexible belts are not limited to one; when the number of the elastic belts is more than one, the elastic belts can be arranged in parallel or in a crossed manner, as long as the two ends of each elastic belt are respectively fixed on the thigh supporting strip and the elastic belt is integrally positioned at the front side of the thigh close to the knee, similarly, the flexible belts can also be arranged in parallel or in a crossed manner, and the two ends of each flexible belt are respectively connected to the shank supporting strip and integrally positioned at the front part of the lower side of the shank.

In the embodiment, the length adjustment of the flexible band is realized by the way of napping and the adjustment of the position of the magic tape, but in the utility model, two through holes can be arranged on the fixing piece, and the end part of the flexible band is sequentially penetrated and wound on the two through holes, thereby realizing the length adjustment in a way similar to that of a thigh binding band.

Claims (6)

1. A knee brace, comprising:

a thigh support to be worn on a thigh;

a lower leg support to be worn on the lower leg; and

a connecting portion provided between the thigh support and the shank support,

wherein the thigh support is provided with two thigh branches which are respectively positioned at the two sides of the thigh,

the connecting part is provided with two adjusting mechanisms which respectively connect the thigh supporting strip with the shank bracket in a rotatable way,

an included angle is formed between the rotating planes of the two adjusting mechanisms,

the thigh support is also provided with an elastic belt, two ends of the elastic belt are respectively connected with the two thigh supporting strips, and the position of the elastic belt corresponds to the position of the front side of the thigh of the user close to the knee.

2. The knee brace of claim 1, wherein:

wherein the included angle between the rotating planes of the adjusting mechanism is 30-70 degrees.

3. The knee brace of claim 2, wherein:

wherein an included angle between the rotation planes of the adjusting mechanism is 50 degrees.

4. The knee brace of claim 1, wherein:

wherein the shank support is provided with two shank supporting strips which are respectively positioned at the two sides of the shank and flexible belts of which the two ends are respectively connected with the two shank supporting strips,

the length of the flexible belt is adjustable, and the position of the flexible belt corresponds to the lower front side of the lower leg of the user.

5. The knee brace of claim 4, wherein:

one end of the flexible belt is fixed at the lower end of one shank supporting strip, and the other end of the flexible belt is connected to the lower end of the other shank supporting strip through a fixing piece capable of adjusting the length of the flexible belt.

6. The knee brace of claim 4, wherein:

wherein the thigh support further has at least two thigh straps for connecting the two thigh branches from the rear thigh side of the user,

the lower leg support is also provided with at least two lower leg straps for connecting the two lower leg braces from the rear side of the lower leg of the user.

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