CN111000701A - Knee joint orthosis - Google Patents
Knee joint orthosis Download PDFInfo
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- CN111000701A CN111000701A CN201911378684.8A CN201911378684A CN111000701A CN 111000701 A CN111000701 A CN 111000701A CN 201911378684 A CN201911378684 A CN 201911378684A CN 111000701 A CN111000701 A CN 111000701A
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- side plate
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- thigh
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- 210000000629 knee joint Anatomy 0.000 title claims abstract description 72
- 210000000689 upper leg Anatomy 0.000 claims abstract description 47
- 210000004417 patella Anatomy 0.000 claims description 11
- 244000309466 calf Species 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 5
- 210000003127 knee Anatomy 0.000 claims 4
- 238000005452 bending Methods 0.000 abstract description 25
- 230000000399 orthopedic effect Effects 0.000 abstract description 5
- 238000005096 rolling process Methods 0.000 abstract description 2
- 210000001699 lower leg Anatomy 0.000 description 21
- 210000002303 tibia Anatomy 0.000 description 10
- 238000000034 method Methods 0.000 description 9
- 210000003041 ligament Anatomy 0.000 description 5
- 210000000845 cartilage Anatomy 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000005499 meniscus Effects 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 3
- 210000003141 lower extremity Anatomy 0.000 description 3
- 208000012659 Joint disease Diseases 0.000 description 2
- 210000000988 bone and bone Anatomy 0.000 description 2
- 230000007850 degeneration Effects 0.000 description 2
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 2
- 210000002414 leg Anatomy 0.000 description 2
- 238000002560 therapeutic procedure Methods 0.000 description 2
- 208000030016 Avascular necrosis Diseases 0.000 description 1
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 241001330002 Bambuseae Species 0.000 description 1
- 206010005963 Bone formation increased Diseases 0.000 description 1
- 208000029578 Muscle disease Diseases 0.000 description 1
- 206010031264 Osteonecrosis Diseases 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 210000001188 articular cartilage Anatomy 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001684 chronic effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000035475 disorder Diseases 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 210000003414 extremity Anatomy 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 210000003407 lower extremity of femur Anatomy 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 210000005036 nerve Anatomy 0.000 description 1
- 201000008482 osteoarthritis Diseases 0.000 description 1
- 230000008506 pathogenesis Effects 0.000 description 1
- 238000000554 physical therapy Methods 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
- A61H1/00—Apparatus for passive exercising; Vibrating apparatus; Chiropractic devices, e.g. body impacting devices, external devices for briefly extending or aligning unbroken bones
- A61H1/02—Stretching or bending or torsioning apparatus for exercising
- A61H1/0237—Stretching or bending or torsioning apparatus for exercising for the lower limbs
- A61H1/024—Knee
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
- A61H2205/00—Devices for specific parts of the body
- A61H2205/10—Leg
- A61H2205/102—Knee
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- Health & Medical Sciences (AREA)
- Epidemiology (AREA)
- Pain & Pain Management (AREA)
- Physical Education & Sports Medicine (AREA)
- Rehabilitation Therapy (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Orthopedics, Nursing, And Contraception (AREA)
- Prostheses (AREA)
Abstract
The invention discloses a knee joint orthosis, relates to the technical field of orthotics, and solves the problems of single function and poor orthopedic effect of the existing orthosis, and the key points of the technical scheme are as follows: the connecting structure comprises an inner side plate and an outer side plate; the outer side plate is provided with a support column, the support column is provided with a universal ball, the inner side plate is provided with a universal shell, and the universal ball is movably connected with the universal shell; the inner side plate is provided with a limiting piece, the limiting piece comprises two connecting rods and a limiting ball, and the limiting ball is movably connected with the connecting rods; the outer side plate is provided with a limiting surface for limiting the rolling ball to contact and roll; the limiting surface comprises convex surfaces and concave surfaces, and the convex surfaces and the concave surfaces are alternately arranged; when the thigh and the shank are unfolded and straightened, the limiting ball is positioned at the center of the convex surface; when the thigh is perpendicular to the shank in a bending way, the limiting ball is positioned at the center of the concave surface; not only can support the knee joint to do stretching and bending movement, but also can support the knee joint to do internal and external rotation movement, and can change the internal and external rotation movement performance of the knee joint in a self-adaptive manner along with the stretching and bending movement of the knee joint.
Description
Technical Field
The invention relates to the technical field of orthotics, in particular to a knee joint orthosis.
Background
The knee joint is composed of the lower end of the femur, the upper end of the tibia and the patella, is the most complicated joint of the human body, has more load and large exercise amount, belongs to a pulley joint, and is a pivot for the movement of the lower limbs. Therefore, the disease rate is the first of the sections. Among these, one of the most common disorders is osteoarthritis, a chronic joint disease characterized by degeneration, wear and tear of articular cartilage and hyperosteogeny, the long-term and increased joint load being the major contributor to its pathogenesis. Meanwhile, knee joint cartilage wear, meniscus damage, tibial plateau fracture and tibial node avascular necrosis are also common conditions of the knee joint, and the occurrence of these conditions is related to joint load.
At present, medication, traditional physical therapy and rehabilitation therapy are generally adopted, and in severe cases, surgical treatment is adopted to recover the functions of lower limb bones or joints. In rehabilitation therapy, orthoses are often used. The orthotics are extracorporeal devices used for preventing and correcting deformity, treating bone, joint, nerve and muscle diseases and compensating functions of the orthotics, and the load-free orthotics for the knee joint share the joint load through correcting force lines, so that the orthotics are important means for treating the joint diseases, relieving the pain of the knee joint of a patient and recovering the activity of the patient.
From the analysis of human kinematics, when the lower limbs of the human body are bent to be straightened, a plurality of movements exist in the knee joints. For example: when the shank swings forwards and backwards, the bending angle range of the shank in the passive bending state is 0-140 degrees; meanwhile, the thigh can rotate a certain angle around the long axis of the shank, which is called as the internal and external rotation movement of the knee joint, the angle is about 30 degrees in the general active rotation state, the maximum rotation angle of the internal and external rotation movement of the knee joint changes along with the change of the bending state of the shank, when the shank and the thigh are straightened, the angle of the internal and external rotation movement of the knee joint is the maximum, and when the shank is perpendicular to the thigh, the angle of the internal and external rotation movement of the knee joint is the maximum.
However, most of the existing knee joint orthotics can only support the knee joint to do stretching and bending movement, are limited by the hinged part of the orthotics, cannot support the internal and external rotation movement of the knee joint, and are easy to cause the degeneration of the auxiliary functions of cartilage, meniscus, auxiliary ligament and the like in the process of orthotics; the small part of the knee joint orthotics can manually adjust the hinged parts to support the internal and external rotation movements of the knee joint, but have the defects of high operation difficulty and poor flexibility, and are easy to cause the deviation of the internal and external rotation movements of the knee joint from the normal movement performance after the orthotics. Therefore, how to design an orthosis capable of adaptively changing the motion performance of the internal rotation and the external rotation of the knee joint along with the extension and flexion of the knee joint is a problem which is urgently needed to be solved at present.
Disclosure of Invention
The invention aims to provide a knee joint orthosis which can support a knee joint to do stretching and bending movement and can also support the knee joint to do internal and external rotation movement, and the internal and external rotation movement performance of the knee joint can be adaptively changed along with the stretching and bending movement of the knee joint.
The technical purpose of the invention is realized by the following technical scheme: the knee joint orthosis comprises a thigh framework worn on a thigh and a shin framework worn on a shank, wherein the thigh framework is provided with two first connecting plates, the shin framework is provided with two second connecting plates, the first connecting plates are movably connected with the corresponding second connecting plates through connecting structures, and the connecting structures are used for realizing first relative rotation of the shin framework and the thigh framework when the thigh and the shank are stretched and bent and second relative rotation of the shin framework and the thigh framework when the thigh and the shank are rotated inwards and outwards;
the connecting structure comprises an inner side plate fixedly connected with the first connecting plate and an outer side plate connected with the second connecting plate;
the inner surface of the outer side plate is fixedly connected with a support column, the end part of the support column is fixedly connected with a universal ball, the outer surface of the inner side plate is fixedly connected with a universal shell, and the universal ball is movably connected with the universal shell;
the outer surface of the inner side plate is symmetrically provided with at least one group of limiting parts, each group of limiting parts comprises two connecting rods which are arranged in central symmetry and limiting balls which are arranged in one-to-one correspondence with the connecting rods, and the limiting balls are movably connected with the connecting rods;
the inner surface of the outer side plate is provided with a limiting surface for limiting the rolling of the ball bearings in a contact manner, and the limiting surface is annularly arranged along the circumferential direction of the support column; the limiting surface comprises two symmetrically arranged convex surfaces and two symmetrically arranged concave surfaces, and the convex surfaces and the concave surfaces are alternately arranged; when the thigh and the shank are unfolded and straightened, the limiting ball is positioned at the center of the convex surface; when the thigh is perpendicular to the shank in bending, the limiting ball is positioned in the center of the concave surface.
By adopting the technical scheme, the tibia framework and the femur framework can rotate relative to each other by utilizing the movable connection of the universal ball and the universal shell, and the knee joint is supported to do stretching and bending movement; the tibia framework and the femur frame can rotate relatively for the second time, and the knee joint is supported to do internal and external rotation movement; when the knee joint does stretching and bending movement, the limiting ball rotates along the circumferential direction of the limiting surface; when the knee joint does internal and external rotation movement, the limiting ball moves towards or away from the limiting surface; the limiting surface is arranged in a concave-convex mode, and the distance between the limiting ball and the limiting surface is changed continuously in the rotating process, so that the maximum rotating angle of the knee joint in the inward and outward rotation motion is changed, and the inward and outward rotation motion performance of the knee joint can be changed in a self-adaptive mode along with the stretching and bending motion of the knee joint.
The invention is further configured to: the maximum rotation angle of the first relative rotation is 120 degrees, and the maximum rotation angle of the second relative rotation is 30 degrees.
By adopting the technical scheme, the angle from the straight state to the maximum bending state of the thigh and the shank is convenient to limit to 120, and the condition that cartilage and ligaments are damaged due to large-amplitude stretching and bending in the knee joint orthopedic process is effectively prevented; meanwhile, the angle from the maximum internal rotation state to the maximum external rotation state of the thigh and the shank is limited to 30 degrees, and the situation that the meniscus and the ligament are pressed and damaged due to large-amplitude internal and external rotation in the knee joint orthopedic process is effectively prevented.
The invention is further configured to: the support column is annularly provided with a limiting plate which can be contacted with the limiting ball, and the limiting plate is positioned on one side of the limiting ball, which is close to the inner side plate.
Through adopting above-mentioned technical scheme, when spacing ball in the spacing piece of same group and spacing face contact spacing for another spacing ball can be spacing with the limiting plate contact, stability when having strengthened connection structure and being interior external rotation motion.
The invention is further configured to: the limiting plate is fixedly connected with a fixing sleeve, and the fixing sleeve is sleeved with the end part of the supporting column far away from the universal ball; the support column is an internal thread cylinder, the fixing sleeve is provided with a through hole which can be aligned with the port of the internal thread cylinder in a penetrating way, the outer side plate is provided with a jack which can be aligned with the through hole in a penetrating way, and the bolt can be matched with the support column in a threaded way after sequentially passing through the jack and the through hole.
By adopting the technical scheme, the fixing sleeve is sleeved with the end part of the supporting column, and then the bolt sequentially penetrates through the jack and the through hole and is in threaded fit with the supporting column, so that the connecting structure is flexible in assembling and disassembling operation; meanwhile, the maximum rotation angle of the internal and external rotation of the knee joint can be flexibly adjusted within a certain range by adjusting the thread matching depth of the bolt and the support column.
The invention is further configured to: the inner surface of the outer side plate is provided with a positioning groove for inserting the fixing sleeve.
Through adopting above-mentioned technical scheme, utilize the constant head tank for the interior plate can be connected with accurate location with the outer panel, has strengthened the precision that connection structure used.
The invention is further configured to: the patella sleeve is connected between the two inner side plates through a connecting band.
By adopting the technical scheme, after the patella sleeve is sleeved with the patella part, the patella is tightly jointed with the tibia and the femur when the knee joint is stretched and bent, so that the treatment effect of the orthosis is enhanced; meanwhile, when the knee joint is stretched and bent, the displacement of the femoral frame relative to the thigh and the displacement of the tibial frame relative to the shank can be limited.
The invention is further configured to: the femoral framework and the tibial frame respectively comprise a first semicircular clamp, a second semicircular clamp and an adjusting cylinder; the first semicircular clamp is fixedly connected with a first screw rod, the second semicircular clamp is fixedly connected with a second screw rod, two ends of the adjusting cylinder are respectively in threaded fit with the first screw rod and the second screw rod, and the thread directions of the first screw rod and the second screw rod are opposite; the two free ends of the first semicircular clip and the second semicircular clip are respectively connected with a lock tongue and a lock catch through a binding belt.
Through adopting above-mentioned technical scheme, rotate and adjust a section of thick bamboo, can adjust first semicircle clamp and second semicircle clamp and do motion in opposite directions or motion dorsad, because thigh, shank position all have the inclination, when first semicircle clamp and second semicircle clamp relative motion, can change the load strength between first connecting plate and the second connecting plate.
The invention is further configured to: the outer surface of the inner side plate is provided with a first accommodating cavity, and the inner surface of the outer side plate is provided with a second accommodating cavity.
By adopting the technical scheme, the occupied space of the connecting structure can be reduced, and the orthosis is miniaturized and lightened.
In conclusion, the invention has the following beneficial effects: the limiting surface is arranged in a concave-convex manner, and the distance between the limiting ball and the limiting surface is continuously changed in the rotating process, so that the maximum rotating angle of the knee joint in the inward and outward rotation motion is changed, and the inward and outward rotation motion performance of the knee joint can be adaptively changed along with the stretching and bending motion of the knee joint; when the limiting balls in the same group of limiting pieces are in contact with the limiting surface for limiting, the other limiting ball can be in contact with the limiting plate for limiting, so that the stability of the connecting structure in internal and external rotation motion is enhanced; the adjusting cylinder is rotated to adjust the first semicircular clamp and the second semicircular clamp to move in opposite directions or move back to back, and the load intensity between the first connecting plate and the second connecting plate can be changed when the first semicircular clamp and the second semicircular clamp move relatively due to the fact that slopes exist at thigh and shank parts.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic view of the overall structure in an embodiment of the present invention;
FIG. 2 is an exploded view of the attachment structure positioned on the outside of a limb in an embodiment of the present invention;
fig. 3 is a schematic distribution structure diagram of a limiting surface in the embodiment of the invention.
In the figure: 1. a strand skeleton; 11. a first connecting plate; 12. a first semicircular clip; 13. a second half clamp; 14. a binding band; 15. locking; 16. a latch bolt; 17. a first screw; 18. an adjusting cylinder; 19. a second screw; 2. a tibia skeleton; 21. a second connecting plate; 3. a connecting structure; 4. a connecting belt; 41. a patella sleeve; 5. an inner side plate; 51. a first accommodating chamber; 52. a universal housing; 53. a universal ball; 54. a support pillar; 55. a connecting rod; 56. limiting balls; 57. a limiting plate; 58. fixing a sleeve; 59. a through hole; 6. an outer panel; 61. a second accommodating chamber; 62. a convex surface; 63. a concave surface; 64. a jack; 65. and (6) positioning a groove.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to fig. 1 to 3 and the embodiments.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly or indirectly connected to the other element.
It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings that is solely for the purpose of facilitating the description and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and is therefore not to be construed as limiting the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
Example (b): the knee joint orthosis is shown in fig. 1 and comprises a thigh framework 1 worn on a thigh and a shin framework 2 worn on a shank, wherein the thigh framework 1 is provided with two first connecting plates 11, the shin framework 2 is provided with two second connecting plates 21, the first connecting plates 11 are movably connected with the corresponding second connecting plates 21 through connecting structures 3, and the connecting structures 3 are used for realizing the stretching and bending of the thigh and the shank, the shin framework 2 rotates relative to the thigh framework 1, and the shin framework 2 and the shin framework 1 rotate relative to each other when the thigh and the shank rotate inwards and outwards.
As shown in fig. 2, the connecting structure 3 includes an inner side plate 5 fixedly connected to the first connecting plate 11 and an outer side plate 6 connected to the second connecting plate 21. The inner surface of outer panel 6 is fixedly connected with support column 54, and the tip fixedly connected with universal ball 53 of support column 54, the outer fixed surface of inner panel 5 is connected with universal shell 52, universal ball 53 and universal shell 52 swing joint. The outer surface of the inner side plate 5 is symmetrically provided with at least one set of limiting parts, each set of limiting parts comprises two connecting rods 55 which are arranged in central symmetry and limiting balls 56 which are arranged in one-to-one correspondence with the connecting rods 55, and the limiting balls 56 are movably connected with the connecting rods 55.
As shown in fig. 2 and 3, the inner surface of the outer plate 6 is provided with a limiting surface for the limiting balls 56 to contact and roll, and the limiting surface is arranged around the supporting column 54 in the circumferential direction. The limiting surface comprises two convex surfaces 62 and two concave surfaces 63 which are symmetrically arranged, and the convex surfaces 62 and the concave surfaces 63 are alternately arranged. When the thigh and the calf are unfolded and straightened, the limiting ball 56 is positioned at the center of the convex surface 62. When the thigh is perpendicular to the calf curvature, the stop ball 56 is centered on the concave surface 63. The universal ball 53 is movably connected with the universal shell 52, so that the tibia framework 2 and the femur framework 1 can rotate relative to each other, and the knee joint is supported to do stretching and bending movement; and the tibia framework 2 and the femur framework 1 can rotate relatively to each other, so that the knee joint is supported to do internal and external rotation movement. When the knee joint does stretching and bending movement, the limiting ball 56 rotates along the circumferential direction of the limiting surface. When the knee joint does the inward and outward rotation movement, the limiting ball 56 moves towards or away from the limiting surface. Because the limiting surface is arranged in a concave-convex manner, the distance between the limiting ball 56 and the limiting surface is continuously changed in the rotating process, so that the maximum rotating angle of the knee joint in the inward and outward rotation motion is changed, and the inward and outward rotation motion performance of the knee joint can be adaptively changed along with the stretching and bending motion of the knee joint.
The maximum rotation angle of the first relative rotation is 120 degrees, the maximum rotation angle of the second relative rotation is 30 degrees, so that the angle from the straightening state to the maximum bending state of the thigh and the shank is convenient to limit to 120, and the condition that the cartilage and the ligament are damaged due to large-amplitude stretching and bending in the knee joint orthopedic process is effectively prevented; meanwhile, the angle from the maximum internal rotation state to the maximum external rotation state of the thigh and the shank is limited to 30 degrees, and the situation that the meniscus and the ligament are pressed and damaged due to large-amplitude internal and external rotation in the knee joint orthopedic process is effectively prevented.
As shown in fig. 2, the supporting column 54 is provided with a limiting plate 57 capable of contacting with the limiting ball 56, and the limiting plate 57 is located on one side of the limiting ball 56 close to the inner side plate 5. When the limiting ball 56 in the same group of limiting pieces is in contact with the limiting surface for limitation, the other limiting ball 56 can be in contact with the limiting plate 57 for limitation, and the stability of the connecting structure 3 in internal and external rotation is enhanced.
As shown in fig. 2, the retainer plate 57 is fixedly connected with a fixing sleeve 58, and the fixing sleeve 58 is sleeved with the end of the support column 54 far away from the universal ball 53. The supporting column 54 is an internal thread cylinder, the fixing sleeve 58 is provided with a through hole 59 which can be aligned with the port of the internal thread cylinder, the outer side plate 6 is provided with a jack 64 which can be aligned with the through hole 59, and the bolt can be matched with the supporting column 54 through the jack 64 and the through hole 59 in a threaded manner after sequentially passing through the jack 64 and the through hole 59. The fixing sleeve 58 is sleeved with the end part of the supporting column 54, and then the bolt sequentially penetrates through the jack 64 and the through hole 59 and then is in threaded fit with the supporting column 54, so that the connecting structure 3 is flexible in assembling and disassembling operations; meanwhile, the maximum rotation angle of the internal and external rotation of the knee joint can be flexibly adjusted within a certain range by adjusting the thread matching depth of the bolt and the support column 54.
As shown in fig. 2, the inner surface of the outer panel 6 is provided with a positioning groove 65 into which the fixing sleeve 58 is inserted. Utilize constant head tank 65 for interior plate 5 can be connected with accurate location with outer panel 6, has strengthened the precision that connection structure 3 used.
As shown in fig. 1, a patella sleeve 41 is connected between the two medial plates 5 via a connecting strap 4. After the patella sleeve 41 is sleeved with the patella part, when the knee joint stretches, the patella is tightly jointed with the tibia and the femur, so that the treatment effect of the orthosis is enhanced; meanwhile, when the knee joint is stretched and flexed, the displacement of the femoral skeleton 1 relative to the thigh and the tibial skeleton 2 relative to the calf can be limited.
As shown in fig. 1, each of the femoral skeleton 1 and the tibial skeleton 2 comprises a first semicircular clamp 12, a second semicircular clamp 13 and an adjusting cylinder 18; the first semicircular clamp 12 is fixedly connected with a first screw rod 17, the second semicircular clamp 13 is fixedly connected with a second screw rod 19, two ends of the adjusting cylinder 18 are respectively in threaded fit with the first screw rod 17 and the second screw rod 19, and the thread directions of the first screw rod 17 and the second screw rod 19 are opposite. The two free ends of the first semicircular clip 12 and the second semicircular clip 13 are respectively connected with a lock tongue 16 and a lock catch 15 through a binding belt 14, and the lock tongue 16 and the lock catch 15 can be of an automobile safety plug-in structure or other plug-in structures. The adjusting cylinder 18 is rotated to adjust the first semicircular clamp 12 and the second semicircular clamp 13 to move in opposite directions or move back to back, and the load intensity between the first connecting plate 11 and the second connecting plate 21 can be changed when the first semicircular clamp 12 and the second semicircular clamp 13 move relatively due to the fact that the upper legs and the lower legs have slopes.
As shown in fig. 2, the outer surface of the inner side plate 5 is provided with a first accommodating cavity 51, and the inner surface of the outer side plate 6 is provided with a second accommodating cavity 61, so that the occupied space of the connecting structure 3 can be reduced, and the orthosis can be miniaturized and lightened.
The working principle is as follows: the universal ball 53 is movably connected with the universal shell 52, so that the tibia framework 2 and the femur framework 1 can rotate relative to each other, and the knee joint is supported to do stretching and bending movement; the tibia framework 2 and the femur framework 1 can rotate relatively to each other, and the knee joint is supported to do internal and external rotation movement; when the knee joint does stretching and bending movement, the limiting ball 56 rotates along the circumferential direction of the limiting surface; when the knee joint does internal and external rotation movement, the limiting ball 56 moves towards or away from the limiting surface; because the limiting surface is arranged in a concave-convex manner, the distance between the limiting ball 56 and the limiting surface is continuously changed in the rotating process, so that the maximum rotating angle of the knee joint in the inward and outward rotation motion is changed, and the inward and outward rotation motion performance of the knee joint can be adaptively changed along with the stretching and bending motion of the knee joint.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.
Claims (8)
1. The knee joint orthosis comprises a thigh framework (1) worn on a thigh and a shin framework (2) worn on a shank, wherein the thigh framework (1) is provided with two first connecting plates (11), the shin framework (2) is provided with two second connecting plates (21), and the first connecting plates (11) are movably connected with the corresponding second connecting plates (21) through connecting structures (3), and the knee joint orthosis is characterized in that: the connecting structure (3) is used for realizing first relative rotation of the shin framework (2) and the femur frame (1) when the thigh and the calf are stretched and flexed and second relative rotation of the shin framework (2) and the femur frame (1) when the thigh and the calf are rotated at the inner side and the outer side;
the connecting structure (3) comprises an inner side plate (5) fixedly connected with the first connecting plate (11) and an outer side plate (6) connected with the second connecting plate (21);
the inner surface of the outer side plate (6) is fixedly connected with a supporting column (54), the end part of the supporting column (54) is fixedly connected with a universal ball (53), the outer surface of the inner side plate (5) is fixedly connected with a universal shell (52), and the universal ball (53) is movably connected with the universal shell (52);
the outer surface of the inner side plate (5) is symmetrically provided with at least one group of limiting parts, each group of limiting parts comprises two connecting rods (55) which are arranged in central symmetry and limiting balls (56) which are arranged in one-to-one correspondence with the connecting rods (55), and the limiting balls (56) are movably connected with the connecting rods (55);
the inner surface of the outer side plate (6) is provided with a limiting surface for a limiting ball (56) to contact and roll, and the limiting surface is annularly arranged along the circumferential direction of the supporting column (54); the limiting surface comprises two convex surfaces (62) which are symmetrically arranged and two concave surfaces (63) which are symmetrically arranged, and the convex surfaces (62) and the concave surfaces (63) are alternately arranged; when the thigh and the shank are unfolded and straightened, the limiting ball (56) is positioned at the center of the convex surface (62); when the thigh is perpendicular to the calf, the limiting ball (56) is positioned at the center of the concave surface (63).
2. The knee brace of claim 1, wherein: the maximum rotation angle of the first relative rotation is 120 degrees, and the maximum rotation angle of the second relative rotation is 30 degrees.
3. The knee brace of claim 1, wherein: the supporting column (54) is annularly provided with a limiting plate (57) capable of contacting with the limiting ball (56), and the limiting plate (57) is positioned on one side of the limiting ball (56) close to the inner side plate (5).
4. The knee brace of claim 3, wherein: the limiting plate (57) is fixedly connected with a fixing sleeve (58), and the fixing sleeve (58) is sleeved with the end part, far away from the universal ball (53), of the supporting column (54); the supporting column (54) is an internal thread cylinder, the fixing sleeve (58) is provided with a through hole (59) which can be aligned with the port of the internal thread cylinder in a penetrating mode, the outer side plate (6) is provided with a jack (64) which can be aligned with the through hole (59) in a penetrating mode, and a bolt can be matched with the supporting column (54) in a threaded mode after sequentially penetrating through the jack (64) and the through hole (59).
5. The knee brace of claim 4, wherein: the inner surface of the outer side plate (6) is provided with a positioning groove (65) for inserting the fixing sleeve (58).
6. The knee joint orthosis of any of claims 1-5, wherein: the two inner side plates (5) are connected with a patella sleeve (41) through a connecting band (4).
7. The knee joint orthosis of any of claims 1-5, wherein: the femoral framework (1) and the tibial framework (2) respectively comprise a first semicircular clamp (12), a second semicircular clamp (13) and an adjusting cylinder (18); the first semicircular clamp (12) is fixedly connected with a first screw (17), the second semicircular clamp (13) is fixedly connected with a second screw (19), two ends of the adjusting cylinder (18) are respectively in threaded fit with the first screw (17) and the second screw (19), and the thread directions of the first screw (17) and the second screw (19) are opposite; the two free ends of the first semicircular clip (12) and the second semicircular clip (13) are respectively connected with a lock tongue (16) and a lock catch (15) through a binding belt (14).
8. The knee joint orthosis of any of claims 1-5, wherein: the outer surface of the inner side plate (5) is provided with a first accommodating cavity (51), and the inner surface of the outer side plate (6) is provided with a second accommodating cavity (61).
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|---|---|---|---|
| CN201911378684.8A CN111000701B (en) | 2019-12-27 | 2019-12-27 | Knee joint orthosis |
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| CN201911378684.8A CN111000701B (en) | 2019-12-27 | 2019-12-27 | Knee joint orthosis |
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| CN111000701A true CN111000701A (en) | 2020-04-14 |
| CN111000701B CN111000701B (en) | 2021-07-30 |
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| CN112022618A (en) * | 2020-09-03 | 2020-12-04 | 河北工业大学 | Rigid-flexible coupling wearable walking-aid exoskeleton system |
| WO2022160362A1 (en) * | 2021-01-29 | 2022-08-04 | 深圳市奇诺动力科技有限公司 | Knee joint force line correction system |
| CN114028054B (en) * | 2021-11-02 | 2024-02-02 | 西北工业大学 | Knee joint orthopedic device for adjusting human lower limb joint force line |
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| Publication number | Publication date |
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| CN111000701B (en) | 2021-07-30 |
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