A 3D printed orthopedic brace for children's lower limb torsion deformity

Abstract

A 3D printed orthopedic brace for torsion deformity of lower limbs of children, including a thigh brace, a calf brace, a foot brace and an adjustable rotation corrector; the thigh brace, the calf brace and the foot brace are all composed of a back plate and side plates on both sides; the adjustable rotation corrector is divided into three parts, the thigh brace and the calf brace are connected by a first adjustable rotation corrector, the calf brace and the foot brace are connected by a second adjustable rotation corrector, and a third adjustable rotation corrector is provided between the forefoot and the rear foot of the foot brace; the thigh brace, the calf brace, the foot brace and the adjustable rotation corrector are all manufactured by 3D printing. This orthopedic brace, through the setting of three adjustable rotation correctors, realizes multi-level controllable and precise correction of the knee joint, ankle joint and forefoot, is easy to operate, can record the degree of correction and make a plan through the scale, has a good correction effect, can be customized for different patients through 3D printing technology, and is more comfortable to wear.

Description

Technical Field

[0001] The present invention relates to the field of lower limb torsional deformity correction, and in particular to a 3D-printed orthopedic brace for children's lower limb torsional deformity. Background Art

[0002] Abnormal gait in children is a very common clinical phenomenon, especially pigeon-toed gait and pigeon-toed gait, which are caused by torsion deformity of the lower limbs. It can be physiological or pathological. Clinical testing can be used to determine whether the specific torsion deformity is from the hip joint, knee joint, ankle joint or simple forefoot torsion deformity, or whether there are torsion deformities in multiple planes at the same time. Children are still in the growth and development stage, and orthopedic braces can be used to correct the torsion deformity of the lower limbs of children after accurate clinical evaluation. However, all braces currently on the market for correcting lower limb rotational deformities have used connecting rods added between the two leg braces or at the soles of the feet to control and maintain the relative rotation angle of the two legs. Therefore, the two lower limbs cannot move independently and the comfort level is extremely poor. In addition, these braces are all formed in one go and lack an adjustable dial, making it impossible to quantitatively and accurately adjust the correction angle, which often results in insufficient correction or overcorrection. Therefore, there is an urgent need for an orthopedic brace that can simultaneously and accurately correct torsional deformities of different planes of the unilateral lower limb and ensure the comfort and cooperation of children during the correction process to achieve the best correction effect. Summary of the invention

[0003] In view of the problems existing in the above-mentioned background technology, the present invention proposes a 3D printed orthotic brace for children's lower limb torsion deformity. Through the setting of three adjustable rotation correctors, it is possible to correct multiple levels of the knee joint, ankle joint and forefoot at the same time. The operation is convenient, the degree of correction can be recorded and a plan can be made through the scale, the correction effect is good, and it can be customized for different patients through 3D printing technology, making it more comfortable to wear.

[0004] A 3D printed orthopedic brace for torsion deformity of lower limbs in children, comprising a thigh brace, a calf brace, a foot brace and an adjustable rotation corrector;

[0005] The thigh brace, calf brace and foot brace are all composed of a back plate and side plates on both sides; the adjustable rotation corrector is divided into three parts, the thigh brace and the calf brace are connected by the first adjustable rotation corrector, the calf brace and the foot brace are connected by the second adjustable rotation corrector, and the third adjustable rotation corrector is provided between the forefoot and the rear foot of the foot brace;

[0006] The first adjustable rotation corrector enables the knee joint to be flexed and extended while allowing the calf brace to be internally rotated or externally rotated relative to the thigh brace to correct the internal and external rotation deformity of the tibia. The second rotation corrector enables the ankle joint to be plantar flexed and dorsiflexed while allowing the foot brace to be internally rotated or externally rotated relative to the calf brace to correct the internal and external rotation deformity of the ankle joint. The third adjustable rotation corrector allows the forefoot part of the foot brace to be rotated left and right on the sole plane relative to the rear part to correct the forefoot adduction and abduction deformity.

[0007] The thigh brace, calf brace, foot brace and adjustable rotation orthosis are all manufactured by 3D printing.

[0008] Further, the first adjustable rotation corrector includes a thigh fixing ring, a first calf fixing ring, a thigh brace connecting piece, and a first calf brace connecting piece;

[0009] The thigh fixing ring is installed on the thigh brace connecting piece, and the first calf fixing ring is installed on the first calf brace connecting piece; the thigh brace connecting piece and the first calf brace connecting piece are both concave curved sheet structures; the thigh brace connecting piece is divided into an upper connecting piece and a lower connecting piece, and the two are connected by a rotating shaft structure on both sides; the upper end of the first calf brace connecting piece is movably fitted to the curved surface of the lower connecting piece; the first calf brace connecting piece and the lower connecting piece are provided with corresponding limiting grooves, and the first calf brace connecting piece is fixed and limited after being moved by inserting a limiting rod slightly wider than the groove width.

[0010] Furthermore, a scale is provided on the lower connecting piece of the thigh brace connecting piece to display the moving distance of the first calf brace connecting piece.

[0011] Further, the second adjustable rotational corrector includes a second calf fixing ring, a second calf brace connector, and a foot brace connector;

[0012] The second calf fixing ring is installed on the second calf brace connecting piece; the second calf brace connecting piece and the foot brace connecting piece are both concave curved sheet structures; the second calf brace connecting piece is divided into an upper connecting piece and a lower connecting piece, and the two are connected by a rotating shaft structure on both sides; the upper end of the foot brace connecting piece is movably fitted to the curved surface of the lower connecting piece; the foot brace connecting piece and the lower connecting piece are provided with corresponding limiting grooves, and the foot brace connecting piece is fixed and limited after being moved by inserting a limiting rod slightly wider than the groove width.

[0013] Furthermore, a scale is provided on the lower connecting member of the second calf brace connecting member to display the moving distance of the foot brace connecting member.

[0014] Further, the third adjustable rotation corrector includes a rear palm fixing ring, a fore palm fixing ring, a rear palm support connecting piece, and a fore palm support connecting piece;

[0015] The rear palm fixing ring is installed on the rear palm support connecting piece, and the fore palm fixing ring is installed on the fore palm support connecting piece;

[0016] The rear palm support connector and the fore palm support connector are both connecting pieces with a circular ring shape at one end. After the circular rings overlap, they are rotated by inserting the rotating shaft and the angles are fixed by the upper and lower rotating fixing pieces.

[0017] Furthermore, marking lines are provided on the rear palm support connector and the fore palm support connector, and scales are provided on the circumference of the rotating fixing member, and the relative rotation angles of the two support connectors are displayed by the marking lines and the scales.

[0018] Furthermore, ventilation holes are provided on the back panels of the thigh brace, the calf brace and the foot brace.

[0019] Furthermore, the inner sides of the thigh brace, calf brace and foot brace are made into a curved shape that fits the patient's body through 3D printing.

[0020] The beneficial effects achieved by the present invention are as follows: the present invention proposes a 3D printed orthopedic brace for children's lower limb torsion deformity, which realizes simultaneous correction of multiple levels of the knee joint, ankle joint and forefoot through the setting of three adjustable rotation correctors, is easy to operate, and the degree of correction can be recorded and a plan can be made through the scale, with good correction effect. It can be customized for different patients through 3D printing technology, and is more comfortable to wear. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 Schematic diagram of the structure of the orthopedic brace in an embodiment of the present invention.

[0022] Figure 2 It is a front view of the structure of the first adjustable rotation corrector in an embodiment of the present invention.

[0023] Figure 3 This is a rear view of the structure of the first adjustable rotation corrector in an embodiment of the present invention.

[0024] Figure 4 It is a top view of the structure of the third adjustable rotation corrector described in an embodiment of the present invention.

[0025] Figure 5 Schematic diagram of the structure of the third adjustable rotation corrector in an embodiment of the present invention.

[0026] In the figure, 1-thigh brace, 2-calf brace, 3-foot brace, 4-first adjustable rotation corrector, 401-thigh fixing ring, 402-first calf fixing ring, 403-thigh brace connecting piece, 404-first calf brace connecting piece, 405-upper connecting piece, 406-lower connecting piece, 407-rotating shaft structure, 408-limiting groove, 409-limiting rod, 410-fixing kit, 5-second adjustable rotation corrector, 6-third adjustable rotation corrector, 601-forefoot fixing ring, 602-rear palm fixing ring, 603-forefoot brace connecting piece, 604-rear palm brace connecting piece, 605-rotation fixing piece, 606-rotation axis. DETAILED DESCRIPTION

[0027] The technical solution of the present invention is further described in detail below in conjunction with the accompanying drawings.

[0028] A 3D printed orthopedic brace for children with lower limb torsion deformity, referring to Figure 1 , including a thigh brace 1, a calf brace 2, a foot brace 3 and an adjustable rotation corrector.

[0029] The thigh brace 1, the calf brace 2 and the foot brace 3 are all composed of a back plate and side plates on both sides; the adjustable rotation corrector is divided into three parts, the thigh brace 1 and the calf brace 2 are connected by a first adjustable rotation corrector 4, the calf brace 2 and the foot brace 3 are connected by a second adjustable rotation corrector 5, and a third adjustable rotation corrector 6 is provided between the forefoot and the rear foot of the foot brace 3.

[0030] The first adjustable rotation corrector 4 enables the knee joint to be flexed and extended while allowing the calf brace 2 to be internally rotated or externally rotated relative to the thigh brace 1 to correct the internal and external rotation deformities of the tibia. The second rotation corrector 5 enables the ankle joint to be plantar flexed and dorsiflexed while allowing the foot brace 3 to be internally rotated or externally rotated relative to the calf brace 2 to correct the internal and external rotation deformities of the ankle joint. The third adjustable rotation corrector 6 allows the forefoot part of the foot brace 3 to be rotated left and right on the sole plane relative to the rear part to correct the forefoot adduction and abduction deformities.

[0031] The thigh brace 1, the calf brace 2, the foot brace 3 and the adjustable rotation corrector are all manufactured by 3D printing.

[0032] Reference Figure 2-3 The first adjustable rotation corrector 4 includes a thigh fixing ring 401, a first calf fixing ring 402, a thigh brace connector 403, and a first calf brace connector 404. The thigh brace connector 403 is connected to the back plate of the thigh brace 1. The first calf brace connector 404 is connected to the back plate of the calf brace 2.

[0033] The thigh fixing ring 401 is mounted on the thigh brace connector 403, and the first calf fixing ring 402 is mounted on the first calf brace connector 404. The fixing ring is a circular ring with an adjustable radius, or a restraining belt or strap with an adjustable length, and is used to fix the upper and lower limbs during rotation correction.

[0034] The thigh brace connector 403 and the first calf brace connector 404 are both concave curved sheet structures. The thigh brace connector 403 is divided into an upper connector 405 and a lower connector 406, which are connected by a rotating shaft structure 407 on both sides. The rotating shaft structure can be a simple annular connecting piece and a central axis interface, one annular connecting piece connects the upper connector 405, and the other connects the lower connecting piece 406. The two circular rings overlap and pass through the center of the ring with a central axis, so that the upper connector 405 and the lower connecting piece 406 can rotate relative to each other, and the patient's knee bending is not affected after wearing the orthopedic brace.

[0035] The upper end of the first calf brace connecting member 404 is movably fitted to the curved surface of the lower connecting member 406, so that when the first calf brace connecting member 404 moves, it drives the calf brace 2 connected thereto to move together. Since the lower connecting member 406 is a curved surface, the calf brace 2 performs a rotational motion at this time, so that the deformity of the calf internal rotation or external rotation can be corrected.

[0036] The first calf brace connector 404 and the lower connector 406 are provided with corresponding limit slots 408. The first calf brace connector is fixed and limited after being moved by inserting a limit rod 409 which is slightly wider than the slot width. The back of the limit rod 409 can achieve a better simultaneous limit and fixation effect at both the upper and lower positions through the set of the fixing kit 401. The lower connector 406 of the thigh brace connector 403 is provided with a scale to display the moving distance of the first calf brace connector 404. In actual operation, an orthopedic plan can be formulated according to the actual situation of the patient, the brace can be rotated according to the scale, and then the moving distance, i.e., the rotation angle, can be fixed by the limit slot 408 and the limit rod 409 to achieve orthopedics according to the course of treatment.

[0037] The structure of the second adjustable rotation corrector 5 is similar to that of the first adjustable rotation corrector 4. Figure 1-3 , which includes a second calf fixing ring, a second calf brace connecting piece, and a foot brace connecting piece. The foot fixing ring is not provided, and the foot brace connecting piece is directly connected to the foot brace 3. During rotational correction, the foot is directly fixed through the two side plates of the foot brace 3.

[0038] The second calf fixing ring is installed on the second calf brace connector; the second calf brace connector and the foot brace connector are both concave curved sheet structures; the second calf brace connector is divided into an upper connector and a lower connector, and the two are connected by a rotating shaft structure on both sides; the upper end of the foot brace connector can movably fit the curved surface of the lower connector; the foot brace connector and the lower connector are provided with corresponding limit grooves, and the foot brace connector is fixed and limited after moving by inserting a limit rod slightly wider than the groove width. The lower connector of the second calf brace connector is provided with a scale to display the moving distance of the foot brace connector.

[0039] The structure of the third adjustable rotation corrector 6 is shown in FIG. Figure 4-5 , including a forefoot fixing ring 601, a rear palm fixing ring 602, a forefoot support connecting piece 603, and a rear palm support connecting piece 604.

[0040] The forefoot fixing ring 601 is installed on the forefoot support connecting piece 603 , and the rear palm fixing ring 602 is installed on the rear palm support connecting piece 604 .

[0041] Reference Figure 5 The forefoot support connecting piece 603 and the rear palm support connecting piece 604 are both connecting pieces with a circular ring shape at one end. After the circular rings overlap, they are rotated by inserting the rotating shaft 606 and fixed at an angle by the upper and lower rotating fixing pieces 605. Specifically, an annular fixing groove is opened on the upper and lower surfaces of the rotating shaft 606, the upper surface of the forefoot support connecting piece 603, and the lower surface of the rear palm support connecting piece 604. The rotating fixing piece 605 is provided with inner and outer annular protrusions corresponding to the position of the fixing groove, and the protrusions are slightly wider than the grooves. In this way, the rotating fixing piece 605 can fix the forefoot support connecting piece 603, the rear palm support connecting piece 604 and the rotating shaft 606 after rotation by the form of the protrusions and the grooves being fitted together.

[0042] Marking lines are provided on the forefoot support connector 603 and the rear foot support connector 604, and scales are provided on the circumference of the rotating fixing member 605. The relative rotation angle between the forefoot support connector 603 and the rear foot support connector 604 can be obtained through the marking lines and the scales.

[0043] The back panels of the thigh brace 1, the calf brace 2 and the foot brace 3 are provided with ventilation holes.

[0044] The inner sides of the thigh brace 1, the calf brace 2 and the foot brace 3 are made into curved shapes that fit the patient's body through 3D printing.

[0045] The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiment. Any equivalent modifications or changes made by ordinary technicians in this field based on the contents disclosed by the present invention should be included in the protection scope recorded in the claims.

Claims

1. A 3D printed orthopedic brace for children's lower limb torsion deformity, characterized by: The orthotic brace includes a thigh brace, a calf brace, a foot brace and an adjustable rotational orthosis; The thigh brace, calf brace and foot brace are all composed of a back plate and side plates on both sides; the adjustable rotation corrector is divided into three parts, the thigh brace and the calf brace are connected by a first adjustable rotation corrector, the calf brace and the foot brace are connected by a second adjustable rotation corrector, and a third adjustable rotation corrector is provided between the forefoot and the rear foot of the foot brace; The first adjustable rotation corrector enables the knee joint to be flexed and extended while allowing the calf brace to be internally rotated or externally rotated relative to the thigh brace to correct the internal and external rotation deformity of the tibia. The second adjustable rotation corrector enables the ankle joint to be plantar flexed and dorsiflexed while allowing the foot brace to be internally rotated or externally rotated relative to the calf brace to correct the internal and external rotation deformity of the ankle joint. The third adjustable rotation corrector allows the forefoot part of the foot brace to be rotated left and right on the sole plane relative to the rear part to correct the forefoot adduction and abduction deformity. The first adjustable rotation corrector includes a thigh fixing ring, a first calf fixing ring, a thigh brace connecting piece, and a first calf brace connecting piece; The thigh fixing ring is installed on the thigh brace connecting piece, and the first calf fixing ring is installed on the first calf brace connecting piece; the thigh brace connecting piece and the first calf brace connecting piece are both concave curved sheet structures; the thigh brace connecting piece is divided into an upper connecting piece and a lower connecting piece, and the two are connected by a rotating shaft structure on both sides; the upper end of the first calf brace connecting piece is movably attached to the curved surface of the lower connecting piece; the first calf brace connecting piece and the lower connecting piece are provided with corresponding limiting grooves, and the first calf brace connecting piece is fixed and limited after being moved by inserting a limiting rod slightly wider than the groove width; The third adjustable rotation corrector includes a rear palm fixing ring, a fore palm fixing ring, a rear palm support connecting piece, and a fore palm support connecting piece; The rear palm fixing ring is installed on the rear palm support connecting piece, and the fore palm fixing ring is installed on the fore palm support connecting piece; The rear palm support connecting piece and the fore palm support connecting piece are both connecting pieces with a circular ring shape at one end. After the circular rings overlap, they are rotated by inserting the rotating shaft and the angles are fixed by the upper and lower rotating fixing pieces. Specifically, an annular fixing groove is opened on the upper and lower surfaces of the rotating shaft and the upper surface of the forefoot support connecting piece and the lower surface of the rear palm support connecting piece, and the rotating fixing piece is provided with inner and outer annular protrusions corresponding to the position of the fixing groove, and the protrusion is slightly wider than the groove, so that the rotating fixing piece can fix the forefoot support connecting piece, the rear palm support connecting piece and the rotating shaft after rotation by the engagement of the protrusion and the groove; The rear palm support connecting member and the fore palm support connecting member are provided with marking lines, and the circumference of the rotating fixing member is provided with scales, and the relative rotation angles of the two support connecting members are displayed by the marking lines and the scales; The thigh brace, calf brace, foot brace and adjustable rotation orthosis are all manufactured by 3D printing.

2. A 3D printed orthopedic brace for children's lower limb torsion deformity according to claim 1, characterized in that: The lower connecting piece of the thigh brace connecting piece is provided with a scale to display the moving distance of the first calf brace connecting piece.

3. A 3D printed orthopedic brace for children's lower limb torsion deformity according to claim 1, characterized in that: The second adjustable rotation corrector includes a second calf fixing ring, a second calf brace connecting piece, and a foot brace connecting piece; The second calf fixing ring is installed on the second calf brace connecting piece; the second calf brace connecting piece and the foot brace connecting piece are both concave curved sheet structures; the second calf brace connecting piece is divided into an upper connecting piece and a lower connecting piece, and the two are connected by a rotating shaft structure on both sides; the upper end of the foot brace connecting piece is movably fitted with the curved surface of the lower connecting piece; the foot brace connecting piece and the lower connecting piece are provided with corresponding limiting grooves, and the foot brace connecting piece is fixed and limited after being moved by inserting a limiting rod slightly wider than the groove width.

4. A 3D printed orthopedic brace for torsion deformity of lower limbs for children according to claim 3, characterized in that: The lower connecting piece of the second calf brace connecting piece is provided with a scale to display the moving distance of the foot brace connecting piece.

5. A 3D printed orthopedic brace for children's lower limb torsion deformity according to claim 1, characterized in that: The back panels of the thigh brace, the calf brace and the foot brace are provided with ventilation holes.

6. A 3D printed orthopedic brace for torsion deformity of lower limbs for children according to claim 1, characterized in that: The inner sides of the thigh brace, calf brace and foot brace are made into a curved shape that fits the patient's body through 3D printing.

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