CN112869927A

CN112869927A - Appliance for treating knee osteoarthritis

Info

Publication number: CN112869927A
Application number: CN201911197325.2A
Authority: CN
Inventors: 姚剑龙; 郭越; 白苓
Original assignee: Baj Reha Medical Shenzhen Co ltd
Current assignee: Baj Reha Medical Shenzhen Co ltd
Priority date: 2019-11-29
Filing date: 2019-11-29
Publication date: 2021-06-01
Anticipated expiration: 2039-11-29
Also published as: CN112869927B; WO2021104137A1

Abstract

An orthosis for treating knee osteoarthritis, which is suitable for patients of different heights and can effectively prevent them from sliding down. It includes a thigh guard, a calf guard, and a correction board connected between the thigh guard and the calf guard, which can apply laterally adjustable pressure to the knee joint, and the upper end of the correction board passes through an upper adjusting member with an adjustable length. It is connected with the thigh guard, and the lower end of the straightening plate is connected with the calf guard through a lower adjusting piece whose length can be adjusted. The correction plate is composed of a biaxial gear meshing hinge and several fixing devices. It is designed to adjust and fix the angle, which can limit the patient's movement angle, thereby avoiding other secondary injuries such as the noose of the knee joint. By replacing the limit device, the purpose of limit is achieved. It has the following advantages: 1) It plays a supporting and stabilizing role. 2) It has good orthopedic strength and effect. 3) Ergonomic, convenient and comfortable to wear.

Description

Appliance for treating knee osteoarthritis

Technical Field

The invention relates to an appliance for limb rehabilitation, in particular to an appliance for knee osteoarthritis rehabilitation.

Background

When the limbs of a person with normal limbs are upright and closed, the two thighs are closed to the midline. When viewed from the front, the inner sides of the two knee joints can be contacted, the two shanks are slightly inclined outwards, and the two ankle joints can be closed together. The trunk is on a straight line with the thigh and the shank when viewed from the side, and the gravity center falls on the center of the ankle joint from the hip joint through the back of the knee joint. In the horizontal position, a line is connected between the anterior superior iliac spine of the pelvis and the first and second toes of the foot, and the line just bisects the patella internally and externally. The straight line is a normal lower limb force line, the normal lower limb force line can ensure that the two lower limbs bear very proper force, so that all joints move coordinately and are not easy to fatigue and damage, which is the natural environment endowing humanity.

Measurement of normal lower limb force line: "the anterior superior iliac spine and the center of the patella and the webs between the 1 st and 2 nd digits of the ilium are on a straight line" - - - - - -Tangjia & lt & gt & ltorthopedics clinical measurement & gt, Anhui scientific Press 2002.

Knee osteoarthritis is caused by the deviation and failure of the fit between the lower limb force line of a patient and the normal lower limb force line due to various causes.

There are many orthoses in the prior art that correct and treat a patient's abnormal lower limb line of force by applying pressure laterally to the patient's knee (e.g., laterally outward from the medial side of the knee for an "X" leg patient and inward from the lateral side of the knee for an "o" leg patient).

Generally, the orthosis comprises a thigh guard plate, a shank guard plate, a orthosis plate connected between the thigh guard plate and the shank guard plate, and a strap for fixing the thigh guard plate and the shank guard plate on the thigh and the shank, respectively.

The prior art orthotics have the following disadvantages:

1) the distance between the thigh guard plate and the shank guard plate is of a fixed structure, so that the height group suitable for the thigh guard plate is limited.

2) The binding belt buckle is a rigid body, cannot be better attached to a human body, and causes discomfort for a user.

3) The straps are laid flat and unfolded to form a straight line, which shape does not meet the ergonomic requirements, i.e. the orthosis is easy to slide downwards after the user has moved.

4) The thigh guard plate and the shank guard plate are fixed on the leg only by the binding belt, the pressing area of the binding belt on the leg is too narrow, and the blood supply of the pressed part is insufficient after long-term wearing.

5) The product is not breathable, and the user feels local sultry and may suffer from skin diseases after wearing the product for a long time.

Disclosure of Invention

The invention aims to provide an appliance for treating knee osteoarthritis, which is suitable for patients with different heights and can effectively prevent the patients from sliding downwards.

In order to solve the technical problems, the invention adopts the technical scheme that:

the invention relates to a corrector for treating knee osteoarthritis, which comprises a thigh guard plate, a shank guard plate and a correcting plate which is connected between the thigh guard plate and the shank guard plate and can apply transversely adjustable pressure to knee osteoarthritis, and is characterized in that: the upper end part of the correcting plate is connected with the thigh guard plate through an upper adjusting piece with adjustable length, and the lower end part of the correcting plate is connected with the shank guard plate through a lower adjusting piece with adjustable length.

The upper adjusting part is composed of an upper supporting arm made of rigid material with better strength and a connecting buckle fixedly connected with the upper end part of the correcting plate, the lower end of the upper supporting arm penetrates through the connecting buckle, the lower end is fixedly connected with the connecting buckle through a screw, a plurality of distance adjusting clamping holes and positioning screw holes are arranged at the upper part of the upper supporting arm at intervals, correspondingly, distance adjusting lugs with the same number as the distance adjusting clamping holes and at least one positioning hole are arranged on the inner side of the thigh guard plate, the distance adjusting lugs can be clamped in any distance adjusting clamping holes in an adaptive mode, and the distance between the thigh guard plate and the correcting plate can be fixed at the position with set length by the positioning screws penetrating through the selected positioning screw holes and the positioning holes.

The lower adjusting part is a lower support arm made of rigid material with better strength, the upper end of the lower support arm and the base plate of the correcting plate are of an integral structure, a plurality of distance adjusting clamping holes and positioning screw holes are formed in the lower portion of the lower support arm at intervals, correspondingly, distance adjusting lugs and at least one positioning hole are arranged on the inner side of the shank guard plate, the number of the distance adjusting lugs is the same as that of the distance adjusting clamping holes, the distance adjusting lugs can be clamped in any one of the distance adjusting clamping holes in an adaptive mode, and the distance between the shank guard plate and the correcting plate can be fixed at the position of set length by the aid of the positioning screws penetrating through the selected positioning screw holes and the positioning holes.

The upper adjusting piece and the lower adjusting piece are of the same structure, and are respectively an upper support arm inserting belt and a lower support arm inserting belt which are of an integral structure with a base plate of the correction plate and made of materials with rigidity and better strength, a plurality of clamping grooves are formed in the side faces of the upper support arm inserting belt and the lower support arm inserting belt, strip-shaped closed sliding boxes which can enable the upper support arm inserting belt or the lower support arm inserting belt to be inserted into the upper support arm inserting belt and the lower support arm inserting belt are respectively arranged on the inner sides of a thigh protecting plate and a shank protecting plate, window holes are formed in the set positions of the side sides of the sliding boxes, elastic pressing type clamping keys are arranged on the window holes, and the inner ends of the clamping keys penetrate through the window holes and can be clamped in any clamping grooves in the upper support arm inserting.

The upper adjusting piece and the lower adjusting piece are of the same structure and are respectively an upper base band and a lower base band which are integrated with the base plate of the correcting plate and are made of rigid materials with better strength, the outer sides of the upper base band and the lower base band are provided with rough surfaces of magic tapes, the inner sides of the thigh guard plate and the shank guard plate are respectively provided with an upper plate substrate and a lower plate substrate which are made of rigid materials with better strength, and the inner sides of the upper plate substrate and the lower plate substrate are both provided with hook surfaces of the magic tapes.

The thigh guard plate and the shank guard plate are rigid hard plates with high strength, the thigh guard plate comprises a thigh upper support and a thigh lower support positioned on the lower side of the thigh upper support, the thigh upper support is in a double-section arc shape, and when the thigh upper support is tied to a thigh, the middle part of the thigh upper support is tightly attached to the inner side or the outer side of the thigh; the shank guard plate is divided into a shank upper bracket and a shank lower bracket positioned on the lower side of the shank upper bracket, the shank upper bracket is also in a double-section arc shape, and when the shank upper bracket is tied on a shank, the shank upper bracket is tightly attached to the inner side or the outer side; the bandage that disposes for thigh upper bracket, thigh lower carriage and shank lower carriage is the arc area that the centre is higher than both ends for preventing the landing and after the tiling expandes according to ergonomic principle, and the bandage that disposes for the shank upper bracket is the arc area that the centre is less than both ends for preventing the landing and after the tiling expandes according to ergonomic principle.

The thigh guard plate and the shank guard plate are provided with a plurality of air holes with different sizes, and the inner side surfaces of the thigh guard plate and the shank guard plate are provided with a plurality of air grooves communicated with the air holes.

The side of the correction plate is provided with an angle change scale value which can display and adjust the pressure application degree of the correction plate to the knee bone joint.

The belt buckles arranged on the thigh guard plate and the shank guard plate can deflect up and down by 45 degrees in a vertical arc surface where the corresponding guard plates are positioned and by taking a horizontal plane as a boundary; meanwhile, the binding belt buckle can deflect 180 degrees from front to back on the outer side of the corresponding guard plate.

Elastic thigh lining protection pads are arranged on the opposite sides of the thigh protection plates, and elastic shank lining protection pads are arranged on the opposite sides of the shank protection plates.

The invention is composed of a double-shaft gear meshing hinge and a plurality of fixing devices, has the functions of angle adjustment and fixation, and can limit the moving angle of a patient, thereby avoiding other secondary injuries such as a hinge rope of a knee joint and the like. The purpose of limiting is achieved by replacing the limiting device. It has the following advantages: 1) plays a role in supporting and stabilizing. 2) Has good orthopedic strength and effect. 3) Accords with human engineering and is convenient and comfortable to wear.

Drawings

Fig. 1 is a schematic view of the orthosis of the present invention.

Fig. 2 is a schematic view of the state in which the orthosis of fig. 1 is used.

Fig. 3 is a rear view of fig. 2.

Fig. 4 is an exploded view of fig. 1.

Fig. 5 is a schematic view of fig. 1 with the strap and inner liner removed.

Fig. 5a is a view from direction a of fig. 5 (i.e., a top view of the thigh panel).

FIG. 5B is a view from the direction B of FIG. 5 (i.e., a bottom view of the calf guard).

Figure 6 is a rear view of figure 5 (i.e., a medial side view of the orthotic).

Fig. 7 is a schematic structural diagram of the adjustable length.

FIG. 8 is a schematic view of the strap buckle being deflectable up and down and back and forth.

Fig. 9 is a structural view of an adjustable angle of a correction plate.

FIG. 10 is a schematic view of adjusting the angle of a correction plate.

Figure 11 is an enlarged exploded schematic view of a correction plate.

FIG. 12 is an enlarged view of the upper arm, worm and outboard shaft bracket of the mounting bracket.

FIG. 13 is an enlarged exploded view of the upper arm, worm gear, inboard pedestal and upper base plate of the mount.

The reference numbers are as follows:

the thigh guard 1, the thigh upper support 11, the thigh lower support 12, the thigh lining pad 13, the calf guard 2, the calf upper support 21, the calf lower support 22, the calf lining pad 23, the band 3, the band fastening ring 31, the fastening position 32, the band buckle 33, the buckle 331, the buckle 332, the lock tongue 3321, the lock tongue shifting piece 3322, the buckle 333, the loop 3331, the loop handle 3332, the vent 4, the ventilation groove 41, the calf lining pad 5, the upper connecting plate 51, the upper base plate 511, the mounting bracket 512, the inner side shaft bracket 5121, the outer side shaft bracket 5122, the rotating shaft hole 5123, the worm wheel 513, the groove 5131, the bayonet 5132, the driving worm 514, the upper arm 515, the lower connecting plate 52, the lower base plate 521, the lower arm 522, the inner clamping plate 53, the outer clamping plate 54, the angle marking line 55, the flexible guard pad 56, the distance adjusting clamping hole 6, the positioning screw hole 61, the distance adjusting lug 62, the positioning hole 63.

Detailed Description

As shown in figures 1-5, the orthosis 7 for treating knee osteoarthritis according to the present invention comprises a thigh guard 1, a thigh lining pad 13, a calf guard 2, a calf lining pad 23, a orthosis plate 5 connected between the thigh guard 1 and the calf guard 2 for applying a laterally adjustable pressure to a knee joint, an adjusting member for adjusting the distance between the orthosis plate 5 and the thigh guard 1 and the calf guard 2, and a strap 3.

The invention will be described in detail below, taking as an example the orthosis 7 for the treatment of leg wearing o.

Thigh guard plate 1 and shank guard plate 2

1. The thigh shield 1 and the shank shield 2 are made of a plastic material, are rigid and high-strength rigid plates, and preferably consist of a rigid shell and an inner pad of an elastomer.

The preferred surface shell is prepared by mixing, blending and injection molding LDPE (Chinese name: low density polyethylene (also called high pressure polyethylene)) and EVA (Chinese name: ethylene-vinyl acetate copolymer), wherein the components of the preferred surface shell are 80% of LDPE and 20% of EVA according to weight ratio.

In the orthosis 7, the thigh guard plate 1 and the calf guard plate 2 are positioning base points for orthosis, and the pressure of the orthosis plate 5 on the knee joint is achieved by adjusting the angle between the orthosis plate 5 and the connecting line between the thigh guard plate 1 and the calf guard plate 2, so that the rigidity of the thigh guard plate 1 and the calf guard plate 2 is particularly important once positioned. However, because the protective plate is tied on the thigh and the calf, under the tightening of the binding band 3, the protective plate should have elasticity capable of being properly deformed in the leg circumference direction, and the elasticity is suitable for the whole protective plate to be tightly attached to the skin of the thigh or the calf, namely, the protective plate can be attached to the human body along with different leg shapes. The strength means that it is strong against excessive deformation and breakage.

2. Thigh guard board 1

The upper thigh support 11 and the lower thigh support 12 are integrated, and the upper thigh support 11 is wider than the lower thigh support 12.

The upper thigh support 11 has a two-segment arc shape (see fig. 5 a), and when it is applied to the thigh, its middle portion is closely attached to the extrafemoral muscle on the outer side of the thigh, and its front and rear ends extend toward the front and rear sides of the thigh, respectively.

The radius of the arc line of the front side part of the thigh upper bracket 11 along the leg circumference direction is 100-120mm and the radius of the arc line of the rear side part along the leg circumference direction is 80-90mm, with the upward extension line of the perpendicular bisector of the straightening plate 5 as a boundary. According to the principle of ergonomics, the upper thigh support 11 is basically suitable for most people, when the upper thigh support is tied on the thigh, the bending degree of the upper thigh support is matched with the bending degree of the outer side of the thigh in the leg circumference direction, namely, the upper thigh support is basically clung to the skin of the thigh, and the structure can improve the wearing comfort of a patient.

The front side end of the upper thigh support 11 is provided with a buckle position 32 which is provided with a binding buckle 33 and is recessed inwards, the rear side end is provided with a binding band fastening ring 31, the binding band fastening ring 31 at the rear side end is inclined towards the perpendicular bisector direction of the correction plate 5 from top to bottom, the structure can make the binding band 3 tightly attached to the leg circumference, and the slipping of the binding band 3 can be effectively prevented.

The under-thigh support 12 has an inverted trapezoidal shape with an inner surface curved substantially in accordance with the upper thigh support 11, a buckle portion 32 provided at a front side end of the under-thigh support 12 and having a buckle portion 33 for attaching the front end of the strap 3 thereto and recessed inward, and a strap fastening ring 31 provided at a rear side end thereof for attaching the rear end of the strap 3 thereto, the strap fastening ring 31 of the rear side end being parallel to the strap fastening ring 31 of the rear side end of the upper thigh support 11. The benefits of this construction are the same as those of the strap tie ring 31 on the upper thigh brace 11.

A plurality of ventilation holes 4 (which can be arranged on the face shell) are arranged on the upper thigh support 11, a plurality of mutually communicated ventilation grooves 41 (which can be arranged on the inner cushion of the elastic body) are arranged on the inner surfaces of the upper thigh support 11 and the lower thigh support 12, and the ventilation grooves 41 are communicated with the ventilation holes 4 on the upper thigh support 11 (see fig. 6). The product is good in ventilation and more suitable for long-time wearing.

The thigh guard 1 of the present invention has a double-strap 3 structure which can better fix the thigh guard 1 to the leg.

In order to improve the comfort of the patient wearing the orthosis 7 and to prevent blood flow from being obstructed due to excessive local pressure on the legs after the straps 3 are tightened too much, an elastic and hard thigh lining pad 13 (provided with holes for allowing the straps 3 to pass through) is provided on the opposite side of the thigh guard plate 1, preferably a base plate made of plastic material is provided, and then a comfortable flexible lining is provided on the base plate. The pad is placed against the rectus femoris and the medial femoral muscles of the inner thigh.

By adding the thigh lining pad 13, the pressure of the binding band 3 is dispersed, and the user can bind more tightly, thereby increasing the orthopedic strength.

3. Shank guard board 2

The upper leg support 21 and the lower leg support 22 are integrated, the rear side of the upper leg support 21 is longer than the lower leg support 22 and extends towards the rear of the leg circumference, and the front side edge of the upper leg support 21 and the front side edge of the lower leg support 22 are basically positioned on a vertical line.

The upper leg support 21 is in the shape of a double arc (see figure 5 b) which, when applied to the lower leg, fits snugly against the gastrocnemius and gastrocnemius muscles on the outside of the lower leg.

The radius of the arc line of the front side part of the bracket 21 on the lower leg along the leg circumference direction is 65-80mm, and the radius of the arc line of the rear side part along the leg circumference direction is 60-75mm by taking the downward extension line of the perpendicular bisector of the straightening plate 5 as a boundary. According to the principle of ergonomics, the design can ensure that the upper bracket 21 of the lower leg is basically suitable for most people, when the upper bracket is tied on the lower leg, the bending degree of the upper bracket is more consistent with the bending degree of the leg circumference direction at the outer side of the lower leg, namely the upper bracket is basically clung to the skin of the lower leg, and the structure can improve the wearing comfort of a patient.

The front side end of the upper bracket 21 of the lower leg is provided with a buckle position 32 which is provided with a binding buckle 33 and is recessed inwards, the rear side end of the upper bracket is provided with a binding belt fastening ring 31 (used for fastening the rear end of the binding belt 3 thereon), the binding belt fastening ring 31 at the rear side end is basically vertically arranged, the structure can lead the binding belt 3 to be tightly bound on the leg circumference, and the slip-off of the binding belt 3 can be effectively prevented.

The curvature of the inner surface of the lower leg support 22 is substantially the same as that of the upper leg support 21, a buckle 32 for attaching a strap buckle 33 (for fixing the front end of the strap 3 thereto) is provided at the front side end of the lower leg support 22 and is recessed inward, a strap fastening ring 31 is provided at the rear side end thereof, and the strap fastening ring 31 at the rear side end is inclined from the top to the bottom in the direction of the perpendicular line of the leveling plate 5. The benefits of this construction are the same as those of the strap tie ring 31 on the upper leg brace 21.

Similarly, a plurality of ventilation holes 4 are arranged on the upper crus support 21, a plurality of mutually communicated ventilation grooves 41 are arranged on the inner surfaces of the upper crus support 21 and the lower crus support 22, and the ventilation grooves 41 are communicated with the ventilation holes 4 on the upper crus support 21 (see fig. 6).

The calf guard 2 of the present invention has a double strap 3 construction which better secures the calf guard 2 to the leg.

Similarly, an elastic and hard lower leg insert pad 23 is provided on the opposite side of the lower leg shield 2, and its structure, material and function are the same as those of the upper leg insert pad 13. The pad is tightly attached to the gastrocnemius muscle on the inner side of the lower leg.

Secondly, the binding band 3 and the binding band buckle 33

1. Binding band 3

According to the principle of ergonomics, in order to enable the binding belt 3 to be tightly tied on the leg and prevent the thigh protection plate 1 and the shank protection plate 2 from sliding downwards in the process of rehabilitation activities of a patient, the shape of the binding belt 3 is designed as follows:

1) the straps 3 provided to the upper thigh brace 11, the lower thigh brace 12 and the lower leg brace 22 are in the form of arc-shaped bands with the middle higher than the two ends after being spread flat (to take off the orthographic projection of the spread from the leg).

2) Bandage 3 of configuration for shank upper bracket 21 is the middle arc area that is less than both ends after the tiling expandes, utilizes the anti-slant of human shank gastrocnemius, and the anti-oblique position of 2 laminating of shank backplate, 3 holes in bandage accord with the inclination design to design 3D tailors bandage 3, more laminates the human body.

The shape is matched with the shape of the leg circumference at the position of the binding band 3, so that the binding band can be closely attached to the leg part in a matched manner and is not easy to slide downwards in the moving process.

The width of the band 3 of the present invention is preferably 20 to 40 mm.

2. Strap fastener 33

As shown in fig. 8, the buckle position 32 at the front side end of the upper thigh support, the lower thigh support, the upper calf support and the lower calf support is provided with a strap buckle 33 with the same structure, and a buckle ring 333 of the strap buckle 33 can deflect up and down by 45 degrees within a vertical arc plane where the corresponding guard plate (i.e. the thigh guard plate 1, the lower calf guard plate 2, the same below) is located; meanwhile, the retaining ring 333 can deflect 180 degrees from front to back on the outer side of the corresponding guard plate, and the binding buckle 33 is composed of a retaining plate 331, a lock 332 and the retaining ring 333, and the specific structure is as follows:

1) buckle 331

The buckle plate 331 is embedded in the buckle position 32, the front side edge of the buckle plate 331 is hinged with the front side edge of the buckle position 32, the lock catch 332 is arranged at the rear part of the buckle plate 331, and the buckle plate 331 is turned from inside to outside or from outside to inside by taking the hinged edge as an axis.

2) Lock catch 332

The lock catch 332 is composed of a lock tongue 3321 and a lock tongue shifting member 3322, and correspondingly, a lock catch is arranged at the rear side edge of the fastening position 32, so that when the buckle plate 331 is pressed into the fastening position 32, the lock tongue 3321 is clamped by the lock catch, and thus, the buckle plate 331 is completely locked in the fastening position 32. When the buckle plate 331 needs to be opened, the lock tongue shifting piece 3322 is pulled forward, so that the lock tongue 3321 can be disengaged from the lock catch, and the buckle plate 331 is turned outwards.

3) Retaining ring 333

The buckle 333 is divided into a collar 3331 and a shank 3332, the collar 3331 is used to fix the front end of the strap 3 thereto, the front end of the shank 3332 is connected to the collar 3331, and the rear end of the shank 3332 is movably disposed in a movable groove provided on the front portion of the buckle 331.

The rear end of the shank 3332 is in a universal ball joint arrangement with the movable slot, thereby allowing the retaining ring 333 to deflect at the angles described above.

The above-described structure of the strap buckle 33 has the following advantages:

1) when the corresponding protecting plate is tied on the leg, the binding band 3 can be adjusted adaptively according to the specific shape of the leg circumference of the wearer, so that the structure that the buckle 333 can deflect up and down by 45 degrees in the vertical arc surface of the corresponding protecting plate with the horizontal plane as a boundary can meet the corresponding adjustment, thereby ensuring the wearing comfort and the stability of the binding band 3 after being fixed. The bandage 3 can be more fit with the human body, effectively prevents the backplate landing.

2) Before the corresponding protective plate is worn on the leg, the buckle plate 331 of the binding belt buckle 33 is opened, at the moment, the buckle plate 331 turns outwards, the buckle plate 333 can deflect 180 degrees relative to the buckle plate 331, the buckle ring 333 can slightly push forwards, correspondingly, the circumference enclosed by the binding belt 3 and the protective plate is properly increased, a patient can sleeve the binding belt 3 at the corresponding position conveniently, after the binding belt is pre-fixed, the buckle plate 331 is pressed into the buckle position 32 to be locked, at the moment, the buckle ring 333 moves backwards along with the turning of the buckle plate 331, therefore, the binding belt 3 is tensioned, namely, the binding function is realized while the locking is carried out, and no other person is needed to tension.

Third, correct the board 5

As shown in fig. 9, 10 and 11, the upper connecting plate 51 connected to the thigh shield 1, the lower connecting plate 52 connected to the calf shield 2, the inner and

outer clamping plates

53 and 54 sandwiching the intersection between the upper and lower connecting

plates

51 and 52, and the pressure regulating unit.

1. Upper connecting plate 51

The upper connection plate 51 is composed of an upper arm 515, a mounting bracket 512 provided at the bottom end of the upper arm 515 for mounting the pressure regulating assembly, and an upper substrate 511.

The upper arm 515 is rigid and strong, and is connected at its upper end to the thigh panel 1.

The lower edge of the upper base plate 511 is provided with a plurality of teeth, and the upper base plate 511 is provided with bolt holes.

The mounting bracket 512 is composed of two inner side shaft brackets 5121 and two outer side shaft brackets 5122 arranged at the outer side of the inner side shaft bracket 5121, the inner side shaft bracket 5121 and the outer side shaft brackets 5122 are provided with rotating shaft holes 5123 with the same axis, the inner side shaft bracket 5121 and the upper base plate part 511 are connected into a whole, and the outer side shaft brackets 5122 are positioned at the lower end of the upper support arm 515 and are in a whole structure with the upper support arm.

The mounting frame 512 is composed of a worm wheel cavity for accommodating a driven part worm wheel 513 arranged in a staggered shaft mode and a worm cavity for accommodating a driving part worm 514 from bottom to top, the worm wheel cavity is arranged between the two inner side shaft frames 5121, and the worm cavity is arranged in an outer side shaft frame 5122 above the driven part worm wheel 513. The driven worm wheel, the inner side shaft bracket 5121 and the outer side shaft bracket 5122 are connected together through a rotating shaft with a stop groove (also called a straight thread flower) at one end, the driven worm wheel and the inner side shaft bracket 5121 can rotate around the rotating shaft, and the outer side shaft bracket 5122 is fixedly connected with the rotating shaft through the stop groove.

2. Lower connecting plate 52

The lower base 521 and the lower arm 522 are integrally formed.

The upper end edge of lower base plate portion 521 is a plurality of teeth, and it meshes with the tooth of upper junction plate 51 lower extreme edge mutually, and its effect is, when this unscrambler 7 was worn to the recovered person and is recovered the motion, does benefit to its shank crooked, promptly: is convenient for the knee joint to move.

The lower base plate 521 is also provided with a bolt hole.

The lower base plate 521 is connected to the lower leg shield 2 by a rigid and strong lower arm 522, and the lower base plate 521 and the lower arm 522 are preferably formed integrally.

The upper arm 515 and the lower arm 522 of the present invention are preferably made of a metal material, and are preferably made of a lightweight aluminum alloy plate.

3. Inner splint 53 and outer splint 54

It is a rigid plastic plate or a metal plate with better strength.

Two bolt holes are formed in the upper and lower positions of the inner and

outer plates

53 and 54, the upper bolt holes correspond to the bolt holes in the upper substrate portion 511, the lower bolt holes correspond to the bolt holes in the lower substrate portion 521, and the inner and

outer plates

53 and 54 are fixed to the inner and outer sides of the upper and lower substrate portions 511 and 521 by bolts, respectively, that is, the joint portion between the upper and lower substrate portions 511 and 521 is tightly clamped between the inner and

outer plates

53 and 54, so that the upper arm 515, the mounting frame 512, the upper and lower substrate portions 511, 521, and the lower arm 522 are formed into a rigid and integrated structure.

The outer side of the inner splint 53 is further provided with a flexible pad 56, the flexible pad 56 is closely attached to the knee joint, and when the orthosis applies pressure to the knee joint, the flexible pad 56 can give a soft, gentle and comfortable pressure feeling to the rehabilitee.

The inner and

outer clips

53 and 54 may be formed by a combination of pressing pieces and wear-resistant pieces interposed between the pressing pieces and the corresponding base plate portions.

4. Pressure regulating assembly

As shown in fig. 11, 12 and 13, the worm gear comprises a driving worm 514 and a driven worm wheel 513.

1) The driver worm 514, as described above, is disposed in a worm cavity above the follower worm wheel 513 and perpendicular to the upper base plate portion 511, and meshes with the follower worm wheel 513.

The driving worm 514 is rotated by screwing a nut provided on an outer end surface of the driving worm 514 with a special tool.

2) The driven worm wheel 513 is perpendicular to the driving worm 514, a strip-shaped groove 5131 is formed in the bottom of the driven worm wheel 513, correspondingly, strip-shaped clamping pins 5132 fixedly connected with the upper base plate 511 are arranged on the bottom surface of the worm wheel cavity, and the driven worm wheel 513 is installed between two inner side shaft brackets 5121 of the worm wheel cavity in a mode that the clamping pins 5132 are embedded into the groove 5131.

3) Voltage regulation operation

The worm 514 of the driving part is screwed to rotate the worm wheel 513 of the driven part, and the rotation of the worm wheel 513 of the driven part can shift the bayonet 5132 to force the upper base plate 511 to rotate in the same direction as the worm wheel 513 of the driven part (because the worm wheel 513 of the driven part and the inner side shaft bracket 5121 are arranged on the same rotating shaft, and the upper base plate and the inner side shaft bracket 5121 are integrated, the rotation directions of the worm wheel 513 of the driven part and the upper base plate 511 are the same), thereby changing the included angle between the plane of the correcting plate 5 and the connecting line of the thigh protecting plate 1 and the calf protecting plate 2.

4) Rotation angle of the correcting plate 5

As shown in fig. 9 and 10, in order to make the rehabilitee using the orthosis 7 accurately know the strength of adjusting the correction plate 5, an angle mark line 55 (also called an angle change scale value) may be provided on the outer side surface of the mounting frame 512 (i.e., on the outer side surface of the outer shaft bracket 5122), and correspondingly, an indication arrow may be provided on the outer side surface of the upper base plate 511, and when the driven worm wheel 513 rotates by an angle, the angle mark line 55 indicated by the indication arrow may be changed correspondingly.

The structure can enable a rehabilitee to carry out accurate angle adjustment according to the requirements of medical advice.

Fourth, height adjusting part

As shown in fig. 7, the height adjustment means comprises an upper adjustment means and a lower adjustment means, and the "adjustment" means to adjust the distance between the orthosis plate 5 and the thigh shield 1 and the calf shield 2, respectively, so that the orthosis 7 is suitable for use by rehabilitation groups having different leg lengths.

The upper adjusting piece and the lower adjusting piece of the invention can adopt the following structures:

1. the upper and lower adjusters are the upper arm 515 and the lower arm 522, respectively.

A plurality of distance adjusting clamp holes 6 and positioning screw holes 61 are respectively arranged at intervals on the upper part of the upper support arm 515 and the lower part of the lower support arm 522, correspondingly, distance adjusting lugs 62 and at least one positioning hole 63 with the same number as the distance adjusting clamp holes 6 are respectively arranged on the inner side of the thigh guard plate 1 and the inner side of the shank guard plate 2, the distance adjusting lugs 62 can be adaptive to be clamped in any one of the distance adjusting clamp holes 6, and the distance between the thigh guard plate 1 and the shank guard plate 2 and the correcting plate 5 can be fixed at the position with the set length by positioning screws penetrating through the selected positioning screw holes 61 and the positioning holes 63.

2. The upper and lower adjusters are the upper arm 515 (also referred to as an upper arm strap for this configuration) and the lower arm 522 (also referred to as a lower arm strap for this configuration), respectively.

The side surfaces of the upper support arm 515 and the lower support arm 522 are respectively provided with a plurality of clamping grooves, and the inner sides of the thigh guard plate 1 and the shank guard plate 2 are respectively provided with a strip-shaped sliding box with closed four sides and an open end surface.

The window hole is arranged at the set position of the side of the sliding box, the window hole is provided with an elastic press type clamping key, when the upper support arm 515 and the lower support arm 522 are inserted into the corresponding sliding box, the inner end of the clamping key can pass through the window hole to be clamped in the clamping groove at the side of the corresponding support arm, and therefore the upper support arm 515 and the lower support arm 522 are fixed at the set position.

The distance between the correction plate 5 and the thigh shield 1 or the calf shield 2 is adjusted by adjusting the density of the upper arm 515 and the lower arm 522 inserted into the corresponding slide boxes.

3. The upper and lower adjusters are the upper arm 515 (for this structure, it is also called upper base band) and the lower arm 522 (for this structure, it is also called lower base band), respectively.

The outer sides of the upper support arm 515 and the lower support arm 522 are provided with rough surfaces of the hook and loop fasteners, the inner sides of the thigh guard plate 1 and the shank guard plate 2 are respectively provided with an upper substrate and a lower substrate which are made of rigid and high-strength materials, and the inner sides of the upper substrate and the lower substrate are respectively provided with hook surfaces of the hook and loop fasteners.

During operation, the rough surfaces of the upper support arm 515 and the lower support arm 522 are adhered to the hook surfaces of the corresponding guard plates, namely, the distances between the correcting plate 5 and the thigh guard plate 1 and the shank guard plate 2 are adjusted, and then the correcting plate is worn on the legs and tightened and fixed, so that the operation is very convenient.

Claims

1. The utility model provides an unscrambler for treating knee osteoarthritis, includes thigh backplate (1), shank backplate (2) and connect can apply horizontal adjustable pressure's board (5) to knee joint between thigh backplate (1) and shank backplate (2), its characterized in that: the upper end part of the correcting plate (5) is connected with the thigh guard plate (1) through an upper adjusting piece with adjustable length, and the lower end part of the correcting plate (5) is connected with the shank guard plate (2) through a lower adjusting piece with adjustable length.

2. The orthosis of claim 1 for treating knee osteoarthritis, wherein: the upper adjusting part is composed of an upper supporting arm (515) made of rigid material with better strength and a connecting buckle fixedly connected with the upper end part of the correcting plate (5), the lower end of the upper supporting arm (515) penetrates through the connecting buckle and is fixedly connected with the connecting buckle through a screw, a plurality of distance adjusting clamping holes (6) and positioning screw holes (61) are arranged at the upper part of the upper supporting arm (515) at intervals, correspondingly, distance adjusting lugs (62) and at least one positioning hole (63) which are the same as the distance adjusting clamping holes (6) in number are arranged on the inner side of the thigh protecting plate (1), the distance adjusting lugs (62) can be clamped in any distance adjusting clamping holes (6) in an adaptive mode, and the distance between the thigh protecting plate (1) and the correcting plate (5) can be fixed at the position of set length by the positioning screws penetrating through the selected positioning screw holes (61) and the positioning holes (63).

3. The orthosis of claim 2 for treating knee osteoarthritis, wherein: the lower adjusting part is a lower support arm (522) made of rigid material with better strength, the upper end of the lower support arm (522) and a base plate of the correcting plate (5) are of an integrated structure, a plurality of distance adjusting clamp holes (6) and positioning screw holes (61) are arranged at the lower part of the lower support arm (522) at intervals, correspondingly, distance adjusting lugs (62) and at least one positioning hole (63) which are the same as the distance adjusting clamp holes (6) in number are arranged on the inner side of the shank guard plate (2), the distance adjusting lugs (62) can be clamped in any distance adjusting clamp holes (6) in an adaptive mode, and the distance between the shank guard plate (2) and the correcting plate (5) can be fixed at the position of set length by enabling positioning screws to penetrate through the selected positioning screw holes (61) and the positioning holes (63).

4. The orthosis of claim 1 for treating knee osteoarthritis, wherein: the upper adjusting piece and the lower adjusting piece are of the same structure, the upper arm inserting belt and the lower arm inserting belt are respectively of an integrated structure with a base plate of the correcting plate (5) and are made of materials with rigidity and better strength, a plurality of clamping grooves are formed in the side faces of the upper arm inserting belt and the lower arm inserting belt, strip-shaped closed sliding boxes capable of enabling the upper arm inserting belt or the lower arm inserting belt to be inserted into the upper arm inserting belt and the lower arm inserting belt are respectively arranged on the inner sides of the thigh protecting plate (1) and the shank protecting plate (2), window holes are formed in the set positions of the side sides of the sliding boxes, elastic pressing type clamping keys are arranged on the window holes, and the inner ends of the clamping keys penetrate through the window holes and can be clamped in any clamping grooves in the upper arm inserting belt or the lower arm inserting belt arranged in the sliding boxes.

5. The orthosis of claim 1 for treating knee osteoarthritis, wherein: the upper adjusting piece and the lower adjusting piece are of the same structure, the upper base band and the lower base band are of an integral structure with the base plate of the correcting plate (5) and are made of rigid materials with better strength, the outer sides of the upper base band and the lower base band are provided with rough surfaces of the magic tapes, the inner sides of the thigh guard plate (1) and the shank guard plate (2) are respectively provided with an upper plate substrate and a lower plate substrate which are made of rigid materials with better strength, and the inner sides of the upper plate substrate and the lower plate substrate are both provided with hook surfaces of the magic tapes.

6. The orthosis of any one of claims 1-5 for treating knee osteoarthritis, wherein: the thigh guard plate (1) and the shank guard plate (2) are both rigid hard plates with high strength, the thigh guard plate (1) is divided into a thigh upper support (11) and a thigh lower support (12) positioned on the lower side of the thigh upper support (11), the thigh upper support (11) is in a double-section arc shape, and when the thigh upper support is tied to a thigh, the middle part of the thigh upper support is tightly attached to the inner side or the outer side of the thigh; the shank guard plate (2) is divided into a shank upper bracket (21) and a shank lower bracket (22) positioned at the lower side of the shank upper bracket (21), the shank upper bracket (21) is also in a double-section arc shape, and when the shank upper bracket (21) is tied on a shank, the shank upper bracket (21) is tightly attached to the inner side or the outer side; bandage (3) that dispose for thigh upper bracket (11), thigh lower carriage (12) and shank lower carriage (22) are according to the ergonomic principle for preventing the landing and be the arc area that the centre is higher than both ends after the tiling expandes, and bandage (3) that dispose for shank upper bracket (21) are according to the ergonomic principle for preventing the landing and be the arc area that the centre is less than both ends after the tiling expandes.

7. The orthosis of claim 6 for treating knee osteoarthritis, wherein: a plurality of air holes (4) with different sizes are arranged on the thigh guard plate (1) and the shank guard plate (2), and a plurality of air-permeable grooves (41) communicated with the air holes (4) are arranged on the inner side surfaces of the thigh guard plate (1) and the shank guard plate (2).

8. The orthosis of claim 7 for treating knee osteoarthritis, wherein: the side of the correction plate (5) is provided with an angle change scale value which can display and adjust the pressure application degree of the correction plate (5) to the knee bone joint.

9. The orthosis of claim 8 for treating knee osteoarthritis, wherein: the belt buckles (33) arranged on the thigh guard plate (1) and the shank guard plate (2) can deflect up and down by 45 degrees in a vertical arc surface where the corresponding guard plates are positioned and by taking a horizontal plane as a boundary; meanwhile, the binding belt buckle (33) can be deflected by 180 degrees from front to back on the outer side of the corresponding protection plate.

10. The orthosis of claim 9 for treating knee osteoarthritis, wherein: an elastic thigh lining protection pad (13) is arranged at the opposite side of the thigh protection plate (1), and an elastic shank lining protection pad (23) is arranged at the opposite side of the shank protection plate (2).