WO2022160362A1 - Système de correction de ligne de force d'articulation de genou - Google Patents

Système de correction de ligne de force d'articulation de genou Download PDF

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Publication number
WO2022160362A1
WO2022160362A1 PCT/CN2021/074906 CN2021074906W WO2022160362A1 WO 2022160362 A1 WO2022160362 A1 WO 2022160362A1 CN 2021074906 W CN2021074906 W CN 2021074906W WO 2022160362 A1 WO2022160362 A1 WO 2022160362A1
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WO
WIPO (PCT)
Prior art keywords
worm
assembly
knee joint
bracket assembly
mounting seat
Prior art date
Application number
PCT/CN2021/074906
Other languages
English (en)
Chinese (zh)
Inventor
白雨
黄智涵
东人
梁哲
Original Assignee
深圳市奇诺动力科技有限公司
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Application filed by 深圳市奇诺动力科技有限公司 filed Critical 深圳市奇诺动力科技有限公司
Publication of WO2022160362A1 publication Critical patent/WO2022160362A1/fr

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F5/00—Orthopaedic methods or devices for non-surgical treatment of bones or joints; Nursing devices; Anti-rape devices
    • A61F5/01—Orthopaedic devices, e.g. splints, casts or braces
    • A61F5/0102—Orthopaedic devices, e.g. splints, casts or braces specially adapted for correcting deformities of the limbs or for supporting them; Ortheses, e.g. with articulations
    • A61F5/0123—Orthopaedic devices, e.g. splints, casts or braces specially adapted for correcting deformities of the limbs or for supporting them; Ortheses, e.g. with articulations for the knees
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F5/00—Orthopaedic methods or devices for non-surgical treatment of bones or joints; Nursing devices; Anti-rape devices
    • A61F5/01—Orthopaedic devices, e.g. splints, casts or braces
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F5/00—Orthopaedic methods or devices for non-surgical treatment of bones or joints; Nursing devices; Anti-rape devices
    • A61F5/01—Orthopaedic devices, e.g. splints, casts or braces
    • A61F5/0102—Orthopaedic devices, e.g. splints, casts or braces specially adapted for correcting deformities of the limbs or for supporting them; Ortheses, e.g. with articulations
    • A61F2005/0132—Additional features of the articulation
    • A61F2005/0158—Additional features of the articulation with locking means
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F5/00—Orthopaedic methods or devices for non-surgical treatment of bones or joints; Nursing devices; Anti-rape devices
    • A61F5/01—Orthopaedic devices, e.g. splints, casts or braces
    • A61F5/0102—Orthopaedic devices, e.g. splints, casts or braces specially adapted for correcting deformities of the limbs or for supporting them; Ortheses, e.g. with articulations
    • A61F2005/0132—Additional features of the articulation
    • A61F2005/0179—Additional features of the articulation with spring means

Definitions

  • the present application relates to the technical field of joint treatment equipment, in particular to a knee joint force alignment system.
  • the purpose of the embodiments of the present application is to provide a knee joint force line correction system, which aims to solve the problems in the prior art that the knee joint force line correction system is weak in effect, poor in adaptability, weak in versatility and high in cost.
  • a technical solution adopted in the embodiments of the present application is a knee joint force alignment system, which is used to be worn on the knee joint of the human body and the upper and lower thigh and calf positions, including an upper bracket assembly, a lower bracket assembly, a first a connection assembly, a second connection assembly and a first adjustment mechanism, the upper bracket assembly, the lower bracket assembly, the first connection assembly, the second connection assembly and the first adjustment mechanism are enclosed into a closed-loop structure;
  • first end of the first adjustment mechanism is connected with the first end of the first connection component
  • second end of the first adjustment mechanism is connected with the first end of the upper bracket assembly
  • the upper bracket The second end of the assembly is connected with the first end of the second connecting assembly
  • the second end of the second connecting assembly is connected with the first end of the lower bracket assembly
  • the second end of the lower bracket assembly is connected with the first end of the lower bracket assembly.
  • the second end of the first connecting assembly is connected, the first adjusting mechanism is adjusted, and the first connecting assembly is controlled to approach the direction of the second connecting assembly, so as to form a force in the direction of the second connecting assembly, at Under the support of the upper bracket assembly and the lower bracket assembly, a three-point force is formed to act on the leg of the human body to correct the force line of the leg of the human body.
  • it also includes a second adjustment mechanism, wherein the first end of the second adjustment mechanism is connected to the second end of the first connection assembly, and the second end of the second adjustment mechanism is connected to the lower bracket assembly , respectively adjust the first adjustment mechanism and the second adjustment mechanism to control the first connecting assembly to tighten in the direction of the second connecting assembly, so as to adjust the first connecting assembly, the upper bracket assembly and the The force acting on the leg of the human body at three points of the lower bracket assembly.
  • it also includes a first hinge structure, the first end of the first hinge structure is connected with the second end of the first adjustment mechanism, and the second end of the first hinge structure is connected with the upper bracket assembly connect.
  • it also includes a second hinge structure, the first end of the second hinge structure is connected with the second end of the second adjustment mechanism, and the second end of the second hinge structure is connected with the lower bracket assembly connect.
  • the upper bracket assembly is provided with a first elastic member to reduce the force on the upper bracket assembly
  • the lower bracket assembly is provided with a second elastic member to reduce the force on the lower bracket assembly. force.
  • the first adjustment mechanism includes a worm wheel mounting seat, a worm screw mounting seat, a worm wheel, a hinge assembly, and a worm screw assembly, the worm wheel mounting seat and the worm screw mounting seat are connected through the hinge assembly, and the worm wheel is arranged on the On the hinge assembly, the worm assembly is meshed with the worm wheel, so that when the worm assembly is adjusted to be controlled to rotate by an external force, the worm wheel is driven to rotate, so as to control the worm wheel mounting seat connected to the worm wheel and the worm wheel.
  • the hinge assembly rotates relative to the shaft.
  • the worm assembly includes a worm body, a worm adjustment shaft and a worm support shaft, the worm body is arranged in engagement with the worm wheel, and the worm mounting seat is provided with a first accommodation for accommodating the worm body.
  • a cavity, the worm support shaft is fixed in the first accommodation cavity, at least one side surface of the first accommodation cavity is provided with a through hole, and the worm body is accommodated in the first accommodation cavity through the worm support shaft
  • one end of the worm adjustment shaft is in interference fit with the worm body, and the other end passes through the through hole, so that the external adjustment workpiece can adjust the worm adjustment shaft, thereby driving the worm The body rotates.
  • the worm body is provided with an inner hole, and the end of the worm support shaft is clearance-fitted with the inner hole on the worm body, so that the worm body can rotate on the worm support shaft. .
  • a gasket for reducing relative friction is further provided between the worm body and the worm support shaft.
  • the hinge assembly includes a hinge rotating shaft and a locking jack screw, and the hinge rotating shaft passes through the first mounting hole of the worm mounting seat, the through hole on the worm wheel, and the first mounting hole of the worm mounting seat, respectively.
  • Two installation holes, the locking top wire is arranged at the end of the first installation hole or the second installation hole to axially fix the hinge rotating shaft.
  • the worm gear mounting seat is provided with a mounting piece for accommodating the worm wheel, the mounting piece is provided with a protrusion adapted to the worm wheel, and the worm wheel is provided with a protrusion adapted to the protrusion.
  • the groove of the worm gear is matched with the protrusion of the mounting piece to lock the worm gear and the worm gear mounting seat.
  • a knee joint force line correction system provided by the present application, through designing a reasonable worm gear structure that meets the requirements of self-locking, determining the installation center distance and the worm gear and worm meshing.
  • the body rotates, the worm body meshes with the worm wheel, the worm drives the worm wheel to rotate in a direction perpendicular to the axial direction of the worm, and the worm wheel and the worm wheel mounting seat are connected by matching features, so that the worm wheel mounting seat is hinged relative to the worm mounting seat.
  • the structure is simple to perform a rotary motion; and by adjusting the first adjustment mechanism, the bracket forms a three-point force to act on the human leg to achieve the effect of correcting the force line, and the force line correction system has strong applicability and obvious effect.
  • the whole frame system is simple in structure, small in size and light in weight, and adopts elastic structure as a connecting piece, which makes the adjustment more convenient, has strong versatility and low cost.
  • FIG. 1 is a schematic structural diagram of a knee joint alignment system provided by an embodiment of the application.
  • FIG. 2 is a schematic diagram of a combination diagram of a worm gear and worm drive mechanism provided by an embodiment of the application;
  • FIG. 3 is a sectional view of a worm gear transmission mechanism in an embodiment of the application.
  • FIG. 4 is an exploded view of a worm gear transmission mechanism in an embodiment of the application.
  • FIG. 6 is a schematic diagram of a knee varus situation according to an embodiment of the present application.
  • FIG. 7 is a schematic diagram of the force line of the femoral and calf bones of the knee joint before the application is corrected;
  • FIG. 8 is a schematic diagram of the force line of the femoral and calf bones of the knee joint after the correction of the application.
  • first and second are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature defined as “first”, “second” may expressly or implicitly include one or more of that feature. In the description of the present application, “plurality” means two or more, unless otherwise expressly and specifically defined.
  • the knee joint alignment correction system provided by the embodiment of the present application can help patients with knee alignment alignment correction to perform knee joint correction, and has good self-locking properties, which can satisfy the degree of freedom during adjustment and also take into account the stability of the knee joint. supportive. It is worth noting that, for the convenience of orientation reference description, the orientations such as up, down, left, and right described below are based on the up, down, left, and right orientations when the pictures are displayed, and are not intended to limit the present application.
  • an embodiment of the present application provides a knee alignment correction system, which is used to be worn on the knee joint of the human body and the upper and lower thighs and calves, including an upper bracket assembly 300, a lower bracket assembly 400, a first connection
  • the assembly 210, the second connecting assembly 220 and the first adjusting mechanism 100A, the upper bracket assembly 300, the lower bracket assembly 400, the first connecting assembly 210, the second connecting assembly 220 and the first adjusting mechanism 100A are enclosed in a closed-loop structure; It is worn by the patient, wherein the first connecting component 210 and the second connecting component 220 clamp the knee joint of the patient, so as to perform force alignment on the knee joint.
  • the first end of the first adjusting mechanism 100A is connected to the first end of the first connecting assembly 210
  • the second end of the first adjusting mechanism 100A is connected to the first end of the upper bracket assembly 300
  • the first end is connected
  • the second end of the upper bracket assembly 300 is connected with the first end of the second connection assembly 220
  • the second end of the second connection assembly 220 is connected with the first end of the lower bracket assembly 400
  • the second end of the lower bracket assembly 400 is connected with the second end of the first connecting assembly 210
  • the first adjusting mechanism 100A is adjusted to control the first connecting assembly 210 to move toward the second connecting assembly 220
  • the direction is close to form a force in the direction of the second connecting assembly 220, and under the support of the upper bracket assembly 300 and the lower bracket assembly 400, a three-point force is formed to act on the legs of the human body to correct the legs of the human body line of force.
  • the above-mentioned first adjusting mechanism 100A is a mechanism that can adjust the relative positions of the first connecting assembly 210 and the upper bracket assembly 300. Since the entire force line correction system is worn on the thigh and calf of the human body, when adjusting the first When an adjustment mechanism 100A is used, the relative position of the first connecting assembly 210 and the upper bracket assembly 300 connected to it will be affected, causing a certain deformation. The second connecting assembly 220 and the lower bracket assembly 400 connected with the first connecting assembly 210 will also be deformed accordingly, thereby affecting the relative position and tightness of the entire force alignment system worn on the patient's thigh, calf and knee joint, so as to achieve Adjustments to patient wearing comfort.
  • it further includes a second adjusting mechanism 100B, wherein the first end of the second adjusting mechanism 100B is connected to the second end of the first connecting component 210 , and the second adjusting mechanism 100B is connected to the second end of the second adjusting mechanism 100B.
  • the end is connected to the lower bracket assembly 400, and the first adjustment mechanism 100A and the second adjustment mechanism 100B are adjusted respectively to control the first connection assembly 210 to tighten in the direction of the second connection assembly 220, so as to adjust the
  • the first connecting assembly 210, the upper bracket assembly 300 and the lower bracket assembly 400 act on the leg of the human body at three points.
  • it further includes a first hinge structure 24A, the first end of the first hinge structure 24A is connected with the second end of the first adjustment mechanism 100A, and the second end of the first hinge structure 24B Connect with the upper bracket assembly 300 .
  • a hinge structure to connect the first adjustment mechanism 100A and the upper bracket assembly 300 can reduce the twist and deformation between the upper bracket assembly 300 and the first adjustment mechanism 100A to a certain extent.
  • the first end of the second hinge structure 24B is connected with the second end of the second adjustment mechanism 100B, so The second end of the second hinge structure 100B is connected to the lower bracket assembly 400 .
  • the upper bracket assembly 300 is provided with a first elastic member 320 to relieve the force on the upper bracket assembly 300
  • the lower bracket assembly 400 is provided with a second elastic member 420 to relieve the lower bracket assembly 400 power on.
  • a rotatable hinge structure is arranged on the adjustment side, and an elastic member is arranged on the opposite side of the adjustment side.
  • the first elastic member 320 and the second elastic member 420 are spring steel structures, which are respectively fixed on the upper bracket assembly 300 and the lower bracket assembly 400 by the fasteners 500 , and the first elastic member 320 attaches the upper bracket to the upper bracket.
  • the assembly 300 is further divided into a first bracket 310 and a first support rod 330, and the second elastic member 420 divides the lower bracket assembly 400 into a second bracket 410 and a second support rod 430, wherein the first end of the first bracket 310 is connected to the first In the hinge structure 24A, the second end of the first bracket 310 is connected to one end of the first elastic member 320 through the fastener 500 , and the second end of the first elastic member 320 is connected to the first end of the first support rod 330 through the fastener 500 , the second end of the first support rod 330 is connected to the first end of the second connecting component 220 , in one embodiment, the fastener 500 is a rivet.
  • the second elastic member 420 divides the lower bracket assembly 400 into a second bracket 410 and a second support rod 430, wherein the first end of the second support rod 430 is connected to the second connection assembly 220, and the second support rod
  • the second end of 430 is connected to the first end of the second elastic member 420 through the fastener 500
  • the second end of the second elastic member 420 is connected to the first end of the second bracket 410 through the fastener 500
  • the second bracket 410 The second end is connected to the first end of the second hinge structure 24B
  • the second end of the second hinge structure 24B is connected to the second end of the second adjusting mechanism 100B
  • one end of the second adjusting mechanism 100B is connected to the first connecting assembly 210's second end.
  • the structures of the first adjustment mechanism 100A and the second adjustment mechanism 100B are the same, and the specific structure inside the adjustment structure is described by taking the first adjustment mechanism 100A as an example.
  • the first adjustment mechanism 100A is a worm gear transmission mechanism, including a worm gear mounting seat 10 , a worm screw mounting seat 20 , a worm wheel 30 , a hinge assembly 40 and Worm assembly 50 , the worm wheel mounting seat 10 and the worm wheel mounting seat 20 are connected through the hinge assembly 40 , the worm wheel 30 is arranged on the hinge assembly 40 , and the worm wheel assembly 50 is engaged with the worm wheel 30 , so that when the worm assembly 50 is controlled to rotate by an external force, the worm wheel 30 is driven to rotate, thereby controlling the worm wheel mounting seat 10 connected to the worm wheel 30 and the hinge assembly 40 to rotate relative to each other.
  • the worm assembly 50 includes a worm body 51 , a worm adjustment shaft 53 and a worm support shaft 52 , and the worm mounting seat 20 is provided with a worm to accommodate the worm
  • the first accommodating cavity 23 of the main body 51, the worm support shaft 52 is fixed in the first accommodating cavity 23, and at least one side of the first accommodating cavity 23 is provided with a through hole 231.
  • a through hole 231 is provided on one side, one end of the worm support shaft 52 is directly fixed in the first accommodating cavity 23 , and the free end of the other end is connected with the worm adjusting shaft 53 .
  • the two through holes are symmetrically arranged, and one end of the worm support shaft 52 passes through one of the through holes to become a free end, and is accommodated in the first accommodating cavity 23, the other end is fixed by interference fit with the through hole.
  • the worm body 51 is accommodated in the first accommodating cavity 23 through the worm support shaft 52 , one end of the worm adjusting shaft 53 is in an interference fit with the worm body 51 , and the other end has a hexagonal structure.
  • One end of the worm screw passes through the remaining through hole 231, so that the external adjustment workpiece can adjust the worm adjusting shaft 53, thereby driving the worm body 51 to rotate.
  • tooth-like saw teeth are arranged around the periphery of the worm wheel 30 , and tooth-like saw teeth are also arranged on the outer circumference of the worm body 51 , and the tooth-like saw teeth of the worm wheel 30 and the worm body 51 are meshed with each other. .
  • the axial direction of the worm wheel 30 and the axial direction of the worm body 51 are perpendicular to each other, but the outer surfaces thereof are arranged in engagement with each other.
  • the worm gear structure that meets the self-locking requirements is designed, the installation center distance and the worm gear meshing mode are determined, and the worm gear adjustment shaft 53 is rotated by the adjusting tool to drive the worm body 51 to perform rotational movement, and the worm body 51 Meshing with the worm wheel 30, the worm body 51 drives the worm wheel 20 to rotate in a direction perpendicular to the axial direction of the worm body 51, and the worm wheel 30 and the worm wheel mounting seat 10 are connected by a matching feature, so that the worm wheel mounting seat 10 is hinged relative to the worm screw mounting seat 20.
  • the rotating shaft 40 rotates in the axial direction, the structure is simple, the volume is small, and the weight is light, and in this way, the angle can be adjusted from the outside after wearing the knee joint force line correction system, and the adjustment method is simple and convenient.
  • the worm body 51 is provided with an inner hole, and the end of the worm support shaft 52 is in clearance fit with the inner hole on the worm body 51, so that the worm body 51 is in the worm body 51.
  • the support shaft 52 performs a rotational motion. Since the worm body 51 can rotate in the first accommodating cavity 23 , the outer wall of the worm body 51 may contact the inner wall of the first accommodating cavity 23 and the worm support shaft 52 , in order to reduce the friction during rotating motion and protect the worm body 51 , between the worm body 51 and the worm support shaft 52 is also provided with a pad 54 for reducing relative friction, the pad 54 is a lubricating pad, which greatly reduces the strength of friction.
  • the hinge assembly 40 includes a hinge rotating shaft 41 and a locking top wire 42, and the hinge rotating shaft 41 passes through the first mounting hole 21 of the worm mounting seat 20 and the through hole on the worm wheel respectively. 31 and the second mounting hole 22 of the worm mounting seat 20, the locking jack screw 42 is arranged at the end of the first mounting hole 21 or the second mounting hole Axial fixation.
  • one of the first mounting hole 21 and the second mounting hole 22 is a through hole
  • the other is a non-penetrating through hole
  • the non-penetrating through hole is used to abut the hinge rotating shaft 41
  • the other The through hole is used for inserting the hinge rotating shaft 41. After insertion, the connecting rotating shaft is easy to fall out during use. Therefore, the locking screw 42 is locked on the through hole to achieve The purpose of locking the hinge rotating shaft 41 .
  • the worm gear 30 rotates around the hinge rotating shaft 41, the hinge rotating shaft 41 passes through the through hole on the worm gear 30, and the worm gear 30 can simultaneously drive the worm gear mounting seat 10 when it rotates.
  • the hinge rotating shaft 41 is used as the axis to rotate, and the mounting member 13 of the worm gear 30 is accommodated on the worm gear mounting seat 10, and a protrusion 131 is provided.
  • the worm gear 30 has two symmetrical surfaces connected to the mounting member 13, there are two protrusions 131 on the mounting member 13, and two grooves 31 are also provided at the corresponding positions of the worm gear 30.
  • the groove 31 is adapted to the protrusion of the mount 13 to lock the worm gear 30 and the worm gear mount 10 .
  • the groove 31 of the worm wheel 30 is fitted with the protrusion 131 on the mounting member 13 by sliding.
  • the mounting member 13 is also provided with a through hole for the hinge rotating shaft 41 to pass through. After the hinge rotating shaft 41 passes through the through hole 21 on the worm mounting seat 20, it passes through the first through hole on the mounting member 13 in turn. The hole 132 , the through hole on the worm wheel 30 , the second through hole 133 on the mounting member 13 , and finally inserted into the non-penetrating through hole 22 on the worm mounting seat 20 for abutting. When the worm wheel 30 is matched with the mounting member 13 , the worm wheel 30 is locked with the worm wheel mounting seat 10 and rotates together with the hinge rotating shaft 41 as the axis.
  • At least one of the first adjustment mechanism 100A and the second adjustment mechanism 100B includes the worm gear transmission mechanism described in any one of the above 100.
  • the worm gear is driven to rotate, so as to control the relative rotation of the worm gear mounting seat connected to the worm gear with the hinge assembly as the axis to correct the correction device.
  • the angle of the body is adjusted.
  • both the first adjustment mechanism 100A and the second adjustment mechanism 100B are set as worm gear transmission mechanisms, and the first adjustment mechanism 100A and the second adjustment mechanism 100B are located at the knee joint force line correction The same side of the system to achieve the adjustment of the upper and lower ends of the knee joint alignment system.
  • the first connecting assembly 210 and the second connecting assembly 220 have the same structure, and both include a mounting piece 240 and a rotating shaft 230 that are oppositely disposed front and rear, and each mounting piece 240 is provided with a passage for the rotating shaft 230 to pass through. hole.
  • the two mounting pieces 240 are clamped between the free end of the worm wheel mounting seat 10A of the first worm gear and worm drive mechanism 100A and the free end of the worm wheel mounting seat 10B of the second worm gear and worm drive mechanism 100B, Please refer to FIG. 4 , the free end of the worm gear mounting seat 10 is provided with a through hole 11 and a toothed structure 12 for the rotating shaft 230 to pass through.
  • the worm gear mounting seat 10B of 100B is arranged symmetrically up and down, so the toothed structure on the worm gear mounting seat 10A and the toothed structure on the worm gear mounting seat 10B can be engaged with each other for transmission.
  • the transmission ratio of the two is 1. : 1, the center of rotation of the tooth shape is at the upper and lower shafts.
  • the two mounting pieces 240 are clamped between the upper support rod 330 and the lower support rod 430.
  • the upper support rod 330 and the lower support rod 430 are also provided with through holes for the rotating shaft 230 to pass through.
  • the two mounting pieces 240 connect the upper support rod 330 and the lower support rod 430 into one body.
  • the arc-shaped opening positions of the first bracket 310 and the second bracket 410 can be set to be symmetrical positions, so as to realize mutual abutment of the leg wearing.
  • a spring steel sheet is used to connect the first bracket 310 and the first support rod 330, and the second bracket 410 and the second support rod 430.
  • the spring steel sheet is light in weight and has a certain elasticity. The strength of the material is required to meet the extreme working conditions, and the spring steel sheet has a large deformation amount without failure due to its own characteristics, then during adjustment, the deformation of the spring steel sheet is used to deform the first bracket 310 and the second bracket 410. And the stress becomes smaller and reaches the range of its safe stress.
  • the spring steel sheet can be a "hard hinge" by default. Although it cannot provide a direct rotational degree of freedom, it can rely on its own deformation to connect the first bracket 310 and the second bracket 410 with the first support rod 320 and The second support rod 420 is rotated relative to each other.
  • the whole device can be divided into five parts: the first bracket 310 is one part; the first support rod 330 , the second connection assembly 220 , the second elastic member 420 and the second support rod 430 become a part; the second bracket 410 is a part; the first worm mounting seat is a part; the first worm gear mounting seat, the second worm wheel mounting seat, and the second worm mounting seat are combined as a part.
  • the above can be considered as a closed five-link structure, and the upper and lower elastic parts on the left side are regarded as two lower motion pairs. is unlimited.
  • adjusting the second worm main body is also a reason.
  • the position of the middle mounting plate on the right side (it can be considered as the part of the combination of the first worm gear seat and the second worm gear seat) can realize multi-directional movement, and can be adjusted to the corresponding position according to the needs of different patients, and squeezed at different positions.
  • the force of pressing the knee joint is also different, so as to meet the needs of different users.
  • Figure 6- Figure 8 take the correction of the knee joint varus as an example.
  • the normal line of force of the upper leg bone and the lower leg bone of the normal knee is basically on the same extension line.
  • Figure 6 the shape of the upper leg bone and the lower leg bone is shown in Figure 6, and the schematic diagram of the force line between the upper leg bone and the lower leg bone is shown in Figure 7.
  • the adjustment mechanism (100A, 100B) of the above-mentioned knee joint alignment system of FIG. 1 can be worn on the outside of the knee joint.
  • the upper and lower parts connected with the adjustment mechanism (100A, 100B) fit the legs, so that the inner side of the knee joint in the middle part is opened, so that the thigh line and the calf line are corrected to a normal and reasonable position, which solves the problem of the patient's lack of biological force. Normal leg deformity, swelling, pain, limited mobility and other problems.
  • the force line correction system of the present application has strong applicability, and when used by different patients, it only needs to be adjusted according to the condition of the patient's knee joint before use, and then it can be adapted to be worn.
  • the force line correction system of the present application can also have a certain rigidity and a better supporting effect structure during adjustment through the structure of the hinge and the elastic member.
  • the adjustable mechanism is realized by a worm gear mechanism.
  • the whole system adopts the above structure to provide better rigidity and support effect, ensuring that when the system device is used, the force line can be kept in a normal state. position to avoid "wiggling" or deforming during use.
  • two elastic parts are set at the upper and lower support positions on the opposite side. High strength, certain toughness and plasticity, high fatigue limit, etc., the elastic part is selected as spring steel.
  • the spring steel itself is deformed, so that the upper and lower frames can rotate relative to the support rod, which can satisfy the degree of freedom at the same time. It also takes into account the entire support, greatly reduces the deformation of the upper and lower frames due to adjustment, protects the stability of the entire frame structure, and achieves better use requirements.

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  • Health & Medical Sciences (AREA)
  • Nursing (AREA)
  • Orthopedic Medicine & Surgery (AREA)
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  • Orthopedics, Nursing, And Contraception (AREA)

Abstract

Système de correction de ligne de force d'articulation de genou, destiné à être utilisé pour être porté sur une articulation de genou humain et des positions de cuisse et de mollet supérieure et inférieure, et comprenant un ensemble renfort supérieur (300), un ensemble renfort inférieur (400), un premier ensemble de connexion (210), un second ensemble de connexion (220) et un premier mécanisme de réglage (100A). L'ensemble renfort supérieur (300), l'ensemble renfort inférieur (400), le premier ensemble de connexion (210), le second ensemble de connexion (220) et le premier mécanisme de réglage (100A) sont enfermés pour former une structure en boucle fermée. Selon le système de correction de ligne de force d'articulation de genou, au moyen du réglage du premier mécanisme de réglage (100A), un renfort forme une force à trois points sur la jambe humaine pour obtenir l'effet de correction d'une ligne de force. De plus, le système de correction de ligne de force d'articulation de genou présente une forte applicabilité et un bon effet. L'ensemble du système de cadre a une structure simple et un petit volume et est léger. Une structure élastique est utilisée en tant que pièce de connexion, ce qui rend le réglage plus pratique. La polyvalence est forte et les coûts sont faibles.
PCT/CN2021/074906 2021-01-29 2021-02-02 Système de correction de ligne de force d'articulation de genou WO2022160362A1 (fr)

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CN206700275U (zh) * 2016-12-01 2017-12-05 百安健康复医疗（深圳）有限公司 一种双柱减荷膝关节炎支具
CN109773755A (zh) * 2018-12-27 2019-05-21 南京航空航天大学 一种无驱动的穿戴式膝关节助力外骨骼机器人
CN111000701A (zh) * 2019-12-27 2020-04-14 王星亮 膝关节矫形器
CN111084685A (zh) * 2020-01-08 2020-05-01 复旦大学 一种支撑相控制膝关节支具
US10744021B1 (en) * 2019-05-17 2020-08-18 Richard Nace Device for, and method of, protecting knees from external forces

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CN102846418A (zh) * 2011-06-29 2013-01-02 汤福刚 体外人工膝关节——无创伤膝关节骨关节病矫治装置
CN215839760U (zh) * 2021-01-29 2022-02-18 深圳市奇诺动力科技有限公司 膝关节力线矫正系统

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CN206700275U (zh) * 2016-12-01 2017-12-05 百安健康复医疗（深圳）有限公司 一种双柱减荷膝关节炎支具
CN109773755A (zh) * 2018-12-27 2019-05-21 南京航空航天大学 一种无驱动的穿戴式膝关节助力外骨骼机器人
US10744021B1 (en) * 2019-05-17 2020-08-18 Richard Nace Device for, and method of, protecting knees from external forces
CN111000701A (zh) * 2019-12-27 2020-04-14 王星亮 膝关节矫形器
CN111084685A (zh) * 2020-01-08 2020-05-01 复旦大学 一种支撑相控制膝关节支具

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