AU2021104492A4

AU2021104492A4 - Orthopedic brace for knee joint

Info

Publication number: AU2021104492A4
Application number: AU2021104492A
Authority: AU
Inventors: Kerong Dai; Tongyou Liu; Yihao Liu; Keming Wan; Jinwu WANG; Ping Wu; Yuanjing Xu
Original assignee: Shangha Jiaoda Intellectual Property Management Co Ltd; Ninth Peoples Hospital Shanghai Jiaotong University School of Medicine; Shanghai Jiao Tong University
Current assignee: Shangha Jiaoda Intellectual Property Management Co Ltd; Ninth Peoples Hospital Shanghai Jiaotong University School of Medicine; Shanghai Jiao Tong University
Priority date: 2020-07-24
Filing date: 2021-07-23
Publication date: 2021-09-16
Anticipated expiration: 2029-07-23
Also published as: WO2022017493A1

Abstract

of the Disclosure The present invention provides an orthopedic brace for knee joint, including a thigh support member, a lower leg support member, and two intermediate connecting members. The two intermediate connecting members are disposed on two sides of the thigh support member and two sides of the lower leg support member. The intermediate connecting member includes an upper connection portion, an intermediate connection portion, and a lower connection portion that are sequentially connected. The upper connection portion includes a fixing plate, a sliding plate, and a fixing unit, the sliding plate is slidably sleeved over the fixing plate, the fixing unit is used for fixing the fixing plate and the sliding plate, the sliding plate is connected to the thigh support member, the fixing plate is connected to the intermediate connection portion, and the lower connection portion is connected to the lower leg support member. Lengths of two sides of the orthopedic brace for knee joint are easy to adjust, so that a patient can wear and adjust the orthosis independently and conveniently. 311 312 31. 1311 3220 3 321321 33 335 ( 21 11 12 FIG. 2 2 22 4r 21 FIG. 3 1/5

Description

312 31. 1311 3220 3 321321

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Title

ORTHOPEDIC BRACE FOR KNEE JOINT

Background of the Present Invention

Field of Invention

The present invention relates to the field of medical rehabilitation instruments, and

particularly, to an orthopedic brace for knee joint.

Description of Related Arts

Knee osteoarthritis is one of the most common orthopedic diseases and is mainly

characterized by knee cartilage degeneration and bone hyperplasia, which has a relatively high

incidence rate in middle-aged and elderly populations and seriously affects the living standards of

patients. In a course of the disease, unbalance of limb alignment is a main reason for knee osteoarthritis,

and when the disease develops to a terminal stage, treatment generally can be performed only through

knee osteotomy correction techniques or knee replacement. However, in addition to considerable costs

and a long postoperative recovery cycle, surgical treatment may lead to a risk of replacing prosthesis

through a second operation for young patients. Therefore, slowing down the course development

through conservative treatment becomes one of important treatment methods for treating knee

osteoarthritis. The orthopedic brace for knee joint can apply different orthopedic forces to two sides

of a knee joint to redistribute stress conditions of an inner side and an outer side of the knee joint, to

correct the limb alignment, reduce compartment loads on a diseased side of the knee joint, and

alleviate pain without reducing the comfort.

Summary of the Present Invention

An objective of the present invention is to provide an orthopedic brace for knee joint, to

resolve a problem of difficulty in adjustment on two sides, to enable a patient to wear and adjust the orthopedic brace independently and conveniently.

To accomplish the foregoing objective and other related objectives, the present invention

provides an orthopedic brace for knee joint, including a thigh support member, a lower leg support

member, and two intermediate connecting members, where

the two intermediate connecting members are disposed on two sides of the thigh support

members and two sides of the lower leg support member; and

the intermediate connecting member includes an upper connection portion, an intermediate

connection portion, and a lower connection portion that are sequentially connected, the upper

connection portion includes a fixing plate, a sliding plate, and a fixing unit, the sliding plate is slidably

sleeved over the fixing plate, the fixing unit is used for fixing the fixing plate and the sliding plate,

the sliding plate is connected to the thigh support member, the fixing plate is connected to the

intermediate connection portion, and the lower connection portion is connected to the lower leg

support member.

Preferably, the fixing plate includes a fixing plate first unit, a connecting shaft, and a fixing

plate second unit that are sequentially connected from a far intermediate connection portion end to a

near intermediate connection portion end; the sliding plate includes a sliding plate first unit of a near

intermediate connection portion end and a sliding plate second unit of a far intermediate connection

portion end; and the sliding plate first unit is slidably sleeved over the fixing plate first unit, and the

sliding plate second unit is connected to the thigh support member.

More preferably, the orthopedic brace for knee joint further includes at least one of the

following technical features:

1) the fixing plate first unit is provided with a plurality of fixing plate first through holes, the

sliding plate first unit is provided with sliding plate first through holes matching the fixing plate first

through holes, and the fixing unit connects the fixing plate and the sliding plate through the fixing

plate first through holes and the sliding plate first through holes; and

2) the sliding plate second unit is provided with a plurality of sliding plate second through

holes and a plurality of sliding plate fixing units, the thigh support member is provided with thigh

support member through holes matching the sliding plate second through holes, and the sliding plate fixing units connect the sliding plate second unit and the thigh support member through the sliding plate second through holes and the thigh support member through holes.

Preferably, the orthopedic brace for knee joint further includes at least one of the following

technical features:

1) the thigh support member and the lower leg support member are both in a U-shaped

opening structure and an opening direction thereof faces a front side of a leg; and

2) the thigh support member is provided with a thigh support surface, and the thigh support

surface is in close contact with an outer surface of a thigh of a patient; and the lower leg support

member is provided with a lower leg support surface, and the lower leg support surface is in close

contact with an outer surface of a lower leg of the patient.

More preferably, the thigh support member is provided with a thigh support member hollow

portion, and the lower leg support member is provided with a lower leg support member hollow

portion.

Preferably, the intermediate connection portion includes a dual-axis chassis, a first limiting

buckle for limiting a rotation range of the upper connection portion, and a second limiting buckle for

limiting a rotation range of the lower connection portion, the dual-axis chassis is provided with an

accommodating cavity accommodating rotation of the upper connection portion and rotation of the

lower connection portion, the dual-axis chassis is rotatably connected to the upper connection portion

through the first limiting buckle, and the dual-axis chassis is rotatably connected to the lower

connection portion through the second limiting buckle.

following technical features:

1) the dual-axis chassis includes a first layer board, a second layer board, and a connection

wall used for limitation, the connection wall is disposed on the same side of the first layer board and

the second layer board, and the first layer board is connected to the second layer board through the

connection wall;

2) the rotation range of the upper connection portion is 0 degree to 80 degrees; and

3) the rotation range of the lower connection portion is 0 degree to 90 degrees.

following technical features:

1) the first limiting buckle includes a first connection stud, afirst limiting connection unit,

and a first limiting protrusion, one end of the first limiting connection unit is connected to the first

connection stud, and the other end of the first limiting connection unit is connected to the first limiting

protrusion; and the dual-axis chassis is provided with a first connection through hole corresponding

to the first connection stud, the first connection stud runs through the first connection through hole,

the dual-axis chassis is provided with a plurality offirst limiting holes surrounding the first connection

through hole, and the first limiting protrusion runs through the first limiting hole; and

2) the second limiting buckle includes a second connection stud, a second limiting connection

unit, and a second limiting protrusion, one end of the second limiting connection unit is connected to

the second connection stud, and the other end of the second limiting connection unit is connected to

the second limiting protrusion; and the dual-axis chassis is provided with a second connection through

hole corresponding to the second connection stud, the second connection stud runs through the second

connection through hole, the dual-axis chassis is provided with a plurality of second limiting holes

surrounding the second connection through hole, and the second limiting protrusion runs through the

second limiting hole.

Further more preferably, the orthopedic brace for knee joint further includes at least one of

the following technical features:

11) in the feature 1), the fixing plate is provided with afixing plate second through hole

corresponding to the first connection through hole, the first connection stud runs through the fixing

plate second through hole, the fixing plate is provided with a fixing plate notch providing a movement

space for the first limiting protrusion, and the fixing plate notch is provided with a fixing plate limiting

stop wall for limiting a movement range of the first limiting protrusion;

12) in the feature 1), the first connection stud is movably riveted to the dual-axis chassis;

13) in the feature 1), in the accommodating cavity, the first connection stud is provided with

a plurality of first anti-wear gaskets close to the dual-axis chassis;

21) in the feature 2), the lower connection portion is provided with a lower connection portion

first connection through hole corresponding to the second connection through hole, the second

connection stud runs through the second connection through hole, the lower connection portion is

provided with a lower connection portion notch providing a movement space for the second limiting

protrusion, and the lower connection portion notch is provided with a lower connection portion

limiting stop wall for limiting a movement range of the second limiting protrusion;

22) in the feature 2), the second connection stud is movably riveted to the dual-axis chassis;

and

23) in the feature 2), in the accommodating cavity, the second connection stud is provided

with a plurality of second anti-wear gaskets close to the dual-axis chassis.

Preferably, the lower connection portion is provided with a plurality of lower connection

portion second connection through holes and lower connection portion fixing units, the lower leg

support member is provided with lower leg support member through holes matching the lower

connection portion second connection through holes, and the lower connection portion fixing units

connect the lower connection portion and the lower leg support member through the second

connection through holes and the lower leg support member through holes.

The technical solutions have at least one of the following beneficial effects:

1) After a patient with a disease such as knee osteoarthritis, genu varum, or genu valgum

wears the orthopedic brace for knee joint, compartment pressure of a knee joint on a narrower side

can be reduced, further development of the disease of a compartment of a diseased side can be

postponed, and surgical treatment can be postponed or avoided.

2) After wearing the orthopedic brace for knee joint, pain caused by non-uniform distribution

of pressure on an inner side and an outer side of a knee joint can be reduced, load on the knee joint is

reduced by using the orthopedic brace for knee joint and limb alignment is corrected, thereby

improving the quality of life of the patient.

3) The orthopedic brace for knee joint has a more convenient orthopedic adjustment apparatus,

and lengths of two sides can be adjusted easily, so that the patient can wear and adjust the orthopedic

brace for knee joint independently and conveniently, thereby reducing an adjustment time for the patient, increasing the compliance of the patient, and improving a treatment effect.

4) A thigh support member and a lower leg support member in the orthopedic brace for knee

joint are both in a U-shaped opening structure and an opening direction thereof faces a front side of a

leg, thereby improving the wear comfort of the patient, and reducing slipping frequency of the

orthopedic brace for knee joint.

Brief Description of the Drawings

Fig. 1 is a schematic structural diagram of an orthopedic brace for knee joint of the present

invention.

Fig. 2 is a schematic structural diagram of a thigh support member in the orthopedic brace

for knee joint of the present invention.

Fig. 3 is a schematic structural diagram of a lower leg support member in the orthopedic

brace for knee joint of the present invention.

Fig. 4 is a schematic structural diagram of an intermediate connecting member in the

orthopedic brace for knee joint of the present invention.

Fig. 5 is a schematic structural diagram of an upper connection portion in the orthopedic

brace for knee joint of the present invention.

Fig. 6 is a schematic structural diagram of a fixing plate in the orthopedic brace for knee joint

of the present invention.

Fig. 7 is a schematic structural diagram of a sliding plate in the orthopedic brace for knee

joint of the present invention.

Fig. 8 is a schematic structural diagram of a lower connection portion in the orthopedic brace

for knee joint of the present invention.

Fig. 9 is a schematic structural diagram of a dual-axis chassis in the orthopedic brace for knee

joint of the present invention.

Fig. 10 is a schematic structural diagram of a first limiting buckle and a second limiting buckle in the orthopedic brace for knee joint of the present invention.

Reference numerals

1 Thigh support member 11 Thigh support member through hole 12 Thigh support member hollow portion 2 Lower leg support member 21 Lower leg support member hollow portion 22 Lower leg support member through hole 3 Intermediate connecting member 31 Upper connection portion 311 Fixing plate 3111 Fixing plate first unit 31111 Fixing plate first through hole 3112 Connecting shaft 3113 Fixing plate second unit 3114 Fixing plate second through hole 3115 Fixing plate notch 3116 Fixing plate limiting stop wall 312 Sliding plate 3121 Sliding plate first unit 31211 Sliding plate first through hole 3122 Sliding plate second unit 31221 Sliding plate second through hole 31222 Sliding plate fixing unit 313 Fixing unit 32 Intermediate connection portion 321 Dual-axis chassis 3211 Accommodating cavity 3212 First layer board 3213 Second layer board 3214 Connection wall

3215 First connection through hole 3216 First limiting hole 3217 Second connection through hole 3218 Second limiting hole 322 First limiting buckle 3221 First connection stud 3222 First limiting connection unit 3223 First limiting protrusion 3224 First anti-wear gasket 323 Second limiting buckle 3231 Second connection stud 3232 Second limiting connection unit 3233 Second limiting protrusion 3234 Second anti-wear gasket 33 Lower connection portion 331 Lower connection portion first connection through hole 332 Lower connection portion notch 333 Lower connection portion limiting stop wall 334 Lower connection portion second connection through hole 335 Lower connection portion fixing unit

Detailed Description of the Preferred Embodiments

In the descriptions of the present invention, it should be noted that, the structures, proportions,

sizes, and the like shown in the drawings of the specification, in coordination with the content

disclosed in the specification, are only used to help a person skilled in the art to read and understand,

and they are not intended to limit the conditions under which the present invention can be implemented

and therefore have no technical significance. Any modifications to the structure, changes to the

proportional relationship or the adjustment on the size should fall within the scope of the technical

content disclosed by the present invention without affecting the effects and the objectives that can be

achieved by the present invention. In addition, orientation or position relationships indicated by the terms such as "center", "longitudinal", "transverse", "upper", "lower", "front", "back", "left", "right",

"vertical", "horizontal", "top", "bottom", "inner", and "outer" are based on orientation or position

relationships shown in the accompanying drawings, and are used only for ease and brevity of

illustration and description of the present invention, rather than indicating or implying that the

mentioned apparatus or component needs to have a particular orientation or needs to be constructed

and operated in a particular orientation. Therefore, such terms should not be understood as limiting

the present invention. In addition, terms "first" and "second" are merely used for description and

should not be understood as indicating or implying relative importance.

In the descriptions consistent with the present invention, it should be noted that, unless

otherwise clearly specified and defined, terms such as "mounting", "interconnection", and

"connection" shall be understood in a broad sense, for example, may be a fixed connection, a

detachable connection, an integral connection, a mechanical connection, an electrical connection, a

direct connection, an indirect connection by using an intermediate medium, or internal communication

between two components. A person of ordinary skill in the art may understand the specific meanings

of the foregoing terms in the present invention according to specific situations.

An orthopedic brace for knee joint is provided, and as shown in Fig. 1, Fig. 4, and Fig. 5, the

orthopedic brace for knee joint includes a thigh support member 1, a lower leg support member 2, and

two intermediate connecting members 3, where

the two intermediate connecting members 3 are disposed on two sides of the thigh support

members 1 and two sides of the lower leg support member 2; and

the intermediate connecting member 3 includes an upper connection portion 31, an

intermediate connection portion 32, and a lower connection portion 33 that are sequentially connected,

the upper connection portion 31 includes a fixing plate 311, a sliding plate 312, and a fixing unit 313,

the sliding plate 312 is slidably sleeved over the fixing plate 311, the fixing unit 313 is used for fixing

the fixing plate 311 and the sliding plate 312, the sliding plate 312 is connected to the thigh support

member 1, the fixing plate 311 is connected to the intermediate connection portion 32, and the lower

connection portion 33 is connected to the lower leg support member 2.

In the orthopedic brace for knee joint, the upper connection portion 31 includes a fixing plate

311, a sliding plate 312, and a fixing unit 313, the sliding plate 312 is slidably sleeved over the fixing

plate 311, and the fixing unit 313 is used for fixing the fixing plate 311 and the sliding plate 312. By

connecting the sliding plate 312 and the fixing plate 311, a patient can adjust the orthopedic brace for

knee joint conveniently and independently, thereby reducing an adjustment time, increasing the

compliance of the patient, and improving a treatment effect. By connecting the sliding plate 312 and

the fixing plate 311, in use of the orthopedic brace for knee joint, an orthopedic force is applied by

increasing a length on a side (diseased side) suffering relatively great force of the patient by 1 to 2

centimeters (cm), to reduce a stress condition of the diseased side. After a patient with a disease such

as knee osteoarthritis, genu varum, or genu valgum wears the orthopedic brace for knee joint,

compartment pressure of a knee joint on a narrower side can be reduced, further development of the

disease of a compartment of a diseased side can be postponed, and surgical treatment can be postponed

or avoided. After the orthopedic brace for knee joint is wom, pain caused by non-uniform distribution

of pressure on an inner side and an outer side of a knee can be reduced, load on the knee is reduced

by using the orthosis and limb alignment is corrected, thereby improving the quality of life of the

patient.

In a preferred embodiment, as shown in Fig. 6 and Fig. 7, the fixing plate 311 includes a

fixing plate first unit 3111, a connecting shaft 3112, and a fixing plate second unit 3113 that are

sequentially connected from a far intermediate connection portion end to a near intermediate

connection portion end; the sliding plate 312 includes a sliding plate first unit 3121 of a near

intermediate connection portion end and a sliding plate second unit 3122 of a far intermediate

connection portion end; and the sliding plate first unit 3121 is slidably sleeved over the fixing plate

first unit 3111, and the sliding plate second unit 3122 is connected to the thigh support member 1. The

fixing plate is divided into the fixing plate first unit 3111 and the fixing plate second unit 3113 that

are fixed by the connecting shaft 3112, to meet a certain degree of deformation of the orthopedic brace

for kneejoint during actual application. An angle between the fixing plate first unit 3111 and thefixing

plate second unit 3113 changes within a relatively small range, and the angle may be controlled within

a range of 5 degrees.

In a preferred embodiment, as shown in Fig. 6 and Fig. 7, the fixing plate first unit 3111 is

provided with a plurality of fixing plate first through holes 31111, the sliding plate first unit 3121 is provided with sliding plate first through holes 31211 matching the fixing plate first through holes

31111, and the fixing unit 313 connects the fixing plate 311 and the sliding plate 312 through the

fixing plate first through holes 31111 and the sliding plate first through holes 31211. The fixing unit

313 may be a magnetic pin, run through both the fixing plate first through hole 31111 and the sliding

plate first through hole 31211, and be attracted by magnetic force, so as to fix the fixing plate 311 and

the sliding plate 312 integrally to adjust a proper length.

In a preferred embodiment, as shown in Fig. 7, Fig. 1, and Fig. 2, the sliding plate second

unit 3122 is provided with a plurality of sliding plate second through holes 31221 and a plurality of

sliding plate fixing units 31222, the thigh support member 1 is provided with thigh support member

through holes 11 matching the sliding plate second through holes 31221, and the sliding plate fixing

units 31222 connect the sliding plate second unit 3122 and the thigh support member 1 through the

sliding plate second through holes 31221 and the thigh support member through holes 11.

In a preferred embodiment, as shown in Fig. 1, Fig. 2, and Fig. 3, the thigh support member

1 and the lower leg support member 2 are both in a U-shaped opening structure and an opening

direction thereof faces a front side of a leg.

In a preferred embodiment, the thigh support member 1 is provided with a thigh support

surface, and the thigh support surface is in close contact with an outer surface of a thigh of a patient;

and the lower leg support member 2 is provided with a lower leg support surface, and the lower leg

support surface is in close contact with an outer surface of a lower leg of the patient.

The thigh support member 1 and the lower leg support member 2 may be manufactured

through 3D printing after being designed by modeling a femoral head to ankles of a patient through

computed tomography (CT) and body surface scanning data, so as to pass through straps of the support

members and be fixed to a thigh and a lower leg of the patient. Personalized orthopedics are

implemented on patients with knee osteoarthritis, genu varum, genu valgum, and the like by using the

thigh support member and the lower leg support member. By attaching the orthopedic brace to a lower

limb of a patient in a personalized manner, the wear comfort and the accuracy of applying an

orthopedic force are increased. The thigh support member 1 and the lower leg support member 2 are

both in a U-shaped opening structure and an opening direction thereof faces a front side of a leg,

thereby improving the wear comfort of the patient, and reducing slipping frequency of the orthopedic brace.

In a preferred embodiment, as shown in Fig. 2 and Fig. 3, the thigh support member 1 is provided with a thigh support member hollow portion 12, and the lower leg support member 2 is provided with a lower leg support member hollow portion 21. The thigh support member hollow portion 12 and the lower leg support member hollow portion 21 increase the breathability when the patient wears the orthopedic brace and improve the comfort.

In a preferred embodiment, as shown in Fig. 1 and Fig. 9, the intermediate connection portion 32 includes a dual-axis chassis 321, a first limiting buckle 322 for limiting a rotation range of the upper connection portion 31, and a second limiting buckle 323 for limiting a rotation range of the lower connection portion 33, the dual-axis chassis 321 is provided with an accommodating cavity 3211 accommodating rotation of the upper connection portion 31 and rotation of the lower connection portion 33, the dual-axis chassis 321 is rotatably connected to the upper connection portion 31 through the first limiting buckle 322, and the dual-axis chassis 321 is rotatably connected to the lower connection portion 33 through the second limiting buckle 323. The dual-axis chassis 321 is rotatably connected to the upper connection portion 31 through the first limiting buckle 322 to adjust the rotation range of the upper connection portion 31; and the dual-axis chassis 321 is rotatably connected to the lower connection portion 33 through the second limiting buckle 323 to adjust the rotation range of the lower connection portion 33.

In a preferred embodiment, the dual-axis chassis 321 includes a first layer board 3212, a second layer board 3213, and a connection wall 3214 used for limitation, the connection wall 3214 is disposed on the same side of the first layer board 3212 and the second layer board 3213, and the first layer board 3212 is connected to the second layer board 3213 through the connection wall 3214. This design limits the upper connection portion 31 and the lower connection portion 33 to rotate in the accommodating cavity 3211 by using the connection wall 3214 used for limitation.

In a preferred embodiment, the rotation range of the upper connection portion 31 is 0 degree to 80 degrees. In this way, a knee joint is prevented from hyperextension or hyperflexion, a risk of injury is reduced, and a maximum movement range is provided for the knee joint. As a result, basic and advanced movement requirements are met, and exercise can be also performed when the orthosis is wom. The rotation range is a range of angles by which a thigh can be bent backward. A plurality of first limiting holes 3216 may be provided. As shown in Fig. 1, 4 first limiting holes 3216 are provided, when the first limiting protrusion 3223 runs through the first first limiting hole 3216, the rotation range of the upper connection portion 31 is 0 degree to 50 degrees, when thefirst limiting protrusion 3223 runs through the second first limiting hole 3216, the rotation range of the upper connection portion 31 is 0 degree to 60 degrees, and the rest may be deduced by analogy.

In a preferred embodiment, the rotation range of the lower connection portion 33 is 0 degree

to 90 degrees. In this way, a knee joint is prevented from hyperextension or hyperflexion, a risk of

injury is reduced, and a maximum movement range is provided for the knee joint. As a result, basic

and advanced movement requirements are met, and exercise can be also performed when the orthosis

is worn. The rotation range is a range of angles by which a lower leg can be bent backward. A plurality

of second limiting holes 3218 may be provided. As shown in Fig. 1, 10 second limiting holes 3218

are provided, when the second limiting protrusion 3233 runs through the first second limiting hole

3218, the rotation range of the lower connection portion 33 is 0 degree to 0 degree, when the second

limiting protrusion 3233 runs through the second second limiting hole 3218, the rotation range of the

lower connection portion 33 is 0 degree to 10 degrees, and the rest may be deduced by analogy.

In a preferred embodiment, as shown in Fig. 10, the first limiting buckle 322 includes a first

connection stud 3221, a first limiting connection unit 3222, and a first limiting protrusion 3223, one

end of the first limiting connection unit 3222 is connected to the first connection stud 3221, and the

other end of the first limiting connection unit 3222 is connected to the first limiting protrusion 3223;

and the dual-axis chassis 321 is provided with a first connection through hole 3215 corresponding to

the first connection stud 3221, the first connection stud 3221 runs through the first connection through

hole 3215, the dual-axis chassis 321 is provided with a plurality of first limiting holes 3216

surrounding the first connection through hole 3215, and the first limiting protrusion 3223 runs through

the first limiting hole 3216. The first limiting protrusion 3223 is detachably connected to the first

limiting connection unit 3222, to help adjust the rotation range of the upper connection portion 31.

In a preferred embodiment, the fixing plate 311 is provided with a fixing plate second through

hole 3114 corresponding to the first connection through hole 3215, the first connection stud 3221 runs

through the fixing plate second through hole 3114, the fixing plate 311 is provided with a fixing plate

notch 3115 providing a movement space for the first limiting protrusion 3223, and the fixing plate notch 3115 is provided with a fixing plate limiting stop wall 3116 for limiting a movement range of the first limiting protrusion 3223.

In a preferred embodiment, the first connection stud 3221 is movably riveted to the dual-axis

chassis 321.

In a preferred embodiment, in the accommodating cavity 3211, the first connection stud 3221

is provided with a plurality of first anti-wear gaskets 3224 close to the dual-axis chassis 321.

In a preferred embodiment, as shown in Fig. 10, the second limiting buckle 323 includes a

second connection stud 3231, a second limiting connection unit 3232, and a second limiting protrusion

3233, one end of the second limiting connection unit 3232 is connected to the second connection stud

3231, and the other end of the second limiting connection unit 3232 is connected to the second limiting

protrusion 3233; and the dual-axis chassis 321 is provided with a second connection through hole

3217 corresponding to the second connection stud 3231, the second connection stud 3231 runs through

the second connection through hole 3217, the dual-axis chassis 321 is provided with a plurality of

second limiting holes 3218 surrounding the second connection through hole 3217, and the second

limiting protrusion 3233 runs through the second limiting hole 3218. The second limiting protrusion

3233 is detachably connected to the second limiting connection unit 3232, to help adjust the rotation

range of the lower connection portion 33.

In a preferred embodiment, as shown in Fig. 8, the lower connection portion 33 is provided

with a lower connection portion first connection through hole 331 corresponding to the second

connection through hole 3217, the second connection stud 3231 runs through the second connection

through hole 3217, the lower connection portion 33 is provided with a lower connection portion notch

332 providing a movement space for the second limiting protrusion 3233, and the lower connection

portion notch 332 is provided with a lower connection portion limiting stop wall 333 for limiting a

movement range of the second limiting protrusion 3233.

In a preferred embodiment, the second connection stud 3231 is movably riveted to the dual

axis chassis 321.

In a preferred embodiment, in the accommodating cavity 3211, the second connection stud

3231 is provided with a plurality of second anti-wear gaskets 3234 close to the dual-axis chassis 321.

In a preferred embodiment, the lower connection portion 33 is provided with a plurality of

lower connection portion second connection through holes 334 and lower connection portion fixing

units 335, the lower leg support member 2 is provided with lower leg support member through holes

22 matching the lower connection portion second connection through holes 334, and the lower

connection portion fixing units 335 connect the lower connection portion 33 and the lower leg support

member 2 through the second connection through holes 334 and the lower leg support member through

holes 22.

The intermediate connecting member 3 in the orthopedic brace for knee joint is a unified

component and may be assembled in advance for use, and the thigh support member 1 and the lower

leg support member 2 are assembled with the intermediate connecting member 3 after being formed

through 3D printing.

The fixing plate first unit 3111 and the fixing plate second unit 3113 are assembled into the

fixing plate 311 through the connecting shaft 3112. The fixing plate 311 and the lower connection

portion 33 are respectively mounted in the accommodating cavity 3211 of the dual-axis chassis 321

to mount the first limiting buckle 322 and the second limiting buckle 323. The sliding plate first unit

3121 is slidably sleeved over the fixing plate first unit 3111, and the sliding plate first unit 3121 and

the fixing plate first unit 3111 are fixed by using the fixing unit 313 such as a magnetic pin, to complete

the assembly of the intermediate connecting member 3. A model is obtained after performing CT and

optical scanning on a patient, the thigh support member 1 and the lower leg support member 2 are

obtained through 3D printing, two intermediate connecting members 3 are then used to fix the lower

connection portion 33 on two sides of an upper part of the lower leg support member 2 respectively,

and the sliding plate second unit 3122 is fixed to two sides of a lower part of the thigh support member

1, to complete the assembly of the orthopedic brace for knee joint.

After obtaining the orthopedic brace for knee joint, the patient first takes off the fixing unit

313 such as the magnetic pin to adjust the two sides to the shortest length, and then fixes the two sides

by using the fixing unit 313. The thigh support member 1 and the lower leg support member 2 are

moved forward and worn on the lower limb, and the orthopedic brace for knee joint is fixed to the

lower limb by using straps when the dual-axis chassis 321 is aligned with the knee joint. The fixing

unit 313 such as magnetic pin on the diseased side is taken off, the sliding plate 312 is pulled to form a relative displacement with the fixing plate 311 and is kept, and the fixing unit 313 such as magnetic pin is inserted into the sliding plate 312 and fixed in the fixing plate 311. The other side is then adjusted in the same manner. To sum up, the diseased side, namely, a side suffering great stress is increased, to enlarge the side with a narrow knee gap so as to alleviate pain.

The above embodiments only exemplarily illustrate the principles and effects of the present

invention, but are not used to limit the present invention. Any person skilled in the art may make

modifications or changes on the foregoing embodiments without departing from the spirit and scope

of the present invention. Therefore, all equivalent modifications or changes made by a person of

ordinary skill in the art without departing from the spirit and technical idea of the present invention

shall be covered by the claims of the present invention.

Claims

What is claimed is:

1. An orthopedic brace for knee joint, comprising a thigh support member (1), a lower leg support

member (2), and two intermediate connecting members (3), wherein

the two intermediate connecting members (3) are disposed on two sides of the thigh support

members (1) and two sides of the lower leg support member (2); and

the intermediate connecting member (3) comprises an upper connection portion (31), an

intermediate connection portion (32), and a lower connection portion (33) that are sequentially

connected, the upper connection portion (31) comprises a fixing plate (311), a sliding plate (312), and

a fixing unit (313), the sliding plate (312) is slidably sleeved over the fixing plate (311), the fixing

unit (313) is used for fixing the fixing plate (311) and the sliding plate (312), the sliding plate (312) is

connected to the thigh support member (1), the fixing plate (311) is connected to the intermediate

connection portion (32), and the lower connection portion (33) is connected to the lower leg support

member (2).

2. The orthopedic brace for knee joint as in claim 1, wherein the fixing plate (311) comprises a fixing

plate first unit (3111), a connecting shaft (3112), and a fixing plate second unit (3113) that are

connection portion end; the sliding plate (312) comprises a sliding plate first unit (3121) of a near

intermediate connection portion end and a sliding plate second unit (3122) of a far intermediate

connection portion end; and the sliding plate first unit (3121) is slidably sleeved over the fixing plate

first unit (3111), and the sliding plate second unit (3122) is connected to the thigh support member

(1).

3. The orthopedic brace for knee joint as in claim 2, further comprising at least one of the following

technical features:

1) the fixing plate first unit (3111) is provided with a plurality offixing plate first through

holes (31111), the sliding plate first unit (3121) is provided with sliding plate first through holes

(31211) matching the fixing plate first through holes (31111), and the fixing unit (313) connects the

fixing plate (311) and the sliding plate (312) through the fixing plate first through holes (31111) and the sliding plate first through holes (31211); and

2) the sliding plate second unit (3122) is provided with a plurality of sliding plate second

through holes (31221) and a plurality of sliding plate fixing units (31222), the thigh support member

(1) is provided with thigh support member through holes (11) matching the sliding plate second

through holes (31221), and the sliding plate fixing units (31222) connect the sliding plate second unit

(3122) and the thigh support member (1) through the sliding plate second through holes (31221) and

the thigh support member through holes (11).

4. The orthopedic brace for knee joint as in claim 1, further comprising at least one of the following

technical features:

1) the thigh support member (1) and the lower leg support member (2) are both in a U-shaped

2) the thigh support member (1) is provided with a thigh support surface, and the thigh

support surface is in close contact with an outer surface of a thigh of a patient; and the lower leg

support member (2) is provided with a lower leg support surface, and the lower leg support surface is

in close contact with an outer surface of a lower leg of the patient.

5. The orthopedic brace for knee joint as in claim 4, wherein the thigh support member (1) is

provided with a thigh support member hollow portion (12), and the lower leg support member (2) is

provided with a lower leg support member hollow portion (21).

6. The orthopedic brace for knee joint as in any one of claims 1 to 5, wherein the intermediate

connection portion (32) comprises a dual-axis chassis (321), a first limiting buckle (322) for limiting

a rotation range of the upper connection portion (31), and a second limiting buckle (323) for limiting

a rotation range of the lower connection portion (33), the dual-axis chassis (321) is provided with an

accommodating cavity (3211) accommodating rotation of the upper connection portion (31) and

rotation of the lower connection portion (33), the dual-axis chassis (321) is rotatably connected to the

upper connection portion (31) through the first limiting buckle (322), and the dual-axis chassis (321)

is rotatably connected to the lower connection portion (33) through the second limiting buckle (323).

7. The orthopedic brace for knee joint as in claim 6, further comprising at least one of the following

technical features:

1) the dual-axis chassis (321) comprises a first layer board (3212), a second layer board

(3213), and a connection wall (3214) used for limitation, the connection wall (3214) is disposed on

the same side of the first layer board (3212) and the second layer board (3213), and the first layer

board (3212) is connected to the second layer board (3213) through the connection wall (3214);

2) the rotation range of the upper connection portion (31) is 0 degree to 80 degrees; and

3) the rotation range of the lower connection portion (33) is 0 degree to 90 degrees.

8. The orthopedic brace for knee joint as in claim 6, further comprising at least one of the following

technical features:

1) the first limiting buckle (322) comprises a first connection stud (3221), a first limiting

connection unit (3222), and a first limiting protrusion (3223), one end of the first limiting connection

unit (3222) is connected to the first connection stud (3221), and the other end of thefirst limiting

connection unit (3222) is connected to the first limiting protrusion (3223); and the dual-axis chassis

(321) is provided with a first connection through hole (3215) corresponding to the first connection

stud (3221), the first connection stud (3221) runs through the first connection through hole (3215),

the dual-axis chassis (321) is provided with a plurality of first limiting holes (3216) surrounding the

first connection through hole (3215), and the first limiting protrusion (3223) runs through the first

limiting hole (3216); and

2) the second limiting buckle (323) comprises a second connection stud (3231), a second

limiting connection unit (3232), and a second limiting protrusion (3233), one end of the second

limiting connection unit (3232) is connected to the second connection stud (3231), and the other end

of the second limiting connection unit (3232) is connected to the second limiting protrusion (3233);

and the dual-axis chassis (321) is provided with a second connection through hole (3217)

corresponding to the second connection stud (3231), the second connection stud (3231) runs through

the second connection through hole (3217), the dual-axis chassis (321) is provided with a plurality of

second limiting holes (3218) surrounding the second connection through hole (3217), and the second

limiting protrusion (3233) runs through the second limiting hole (3218).

9. The orthopedic brace for knee joint as in claim 8, further comprising at least one of the following

technical features:

11) in the feature 1), the fixing plate (311) is provided with afixing plate second through hole

(3114) corresponding to the first connection through hole (3215), the first connection stud (3221) runs

through the fixing plate second through hole (3114), the fixing plate (311) is provided with afixing

plate notch (3115) providing a movement space for the first limiting protrusion (3223), and the fixing

plate notch (3115) is provided with a fixing plate limiting stop wall (3116) for limiting a movement

range of the first limiting protrusion (3223);

12) in the feature 1), the first connection stud (3221) is movably riveted to the dual-axis

chassis (321);

13) in the feature 1), in the accommodating cavity (3211), the first connection stud (3221) is

provided with a plurality offirst anti-wear gaskets (3224) close to the dual-axis chassis (321);

21) in the feature 2), the lower connection portion (33) is provided with a lower connection

portion first connection through hole (331) corresponding to the second connection through hole

(3217), the second connection stud (3231) runs through the second connection through hole (3217),

the lower connection portion (33) is provided with a lower connection portion notch (332) providing

a movement space for the second limiting protrusion (3233), and the lower connection portion notch

(332) is provided with a lower connection portion limiting stop wall (333) for limiting a movement

range of the second limiting protrusion (3233);

22) in the feature 2), the second connection stud (3231) is movably riveted to the dual-axis

chassis (321); and

23) in the feature 2), in the accommodating cavity (3211), the second connection stud (3231)

is provided with a plurality of second anti-wear gaskets (3234) close to the dual-axis chassis (321).

10. The orthopedic brace for knee joint as in claim 1, wherein the lower connection portion (33) is

provided with a plurality of lower connection portion second connection through holes (334) and

lower connection portion fixing units (335), the lower leg support member (2) is provided with lower

leg support member through holes (22) matching the lower connection portion second connection

through holes (334), and the lower connection portion fixing units (335) connect the lower connection

portion (33) and the lower leg support member (2) through the second connection through holes (334) and the lower leg support member through holes (22).