Orthosis and orthopedic system for scoliosis

Abstract

The embodiment of the utility model provides an orthosis and an orthosis system for scoliosis. The orthosis for scoliosis comprises a sleeve, a reset piece, a first rod body and a second rod body. The sleeve is provided with a containing cavity, the reset piece is arranged in the containing cavity, and the end of the sleeve is provided with a stop part; the first rod body and the second rod body are oppositely arranged on the sleeve, an anti-dislocation part is arranged at the end of the second rod body, the anti-dislocation part is arranged in the containing cavity in a sliding and penetrating mode, and the anti-dislocation part abuts against the reset piece and can abut against the stop part. Therefore, the anti-disengagement part is prevented from being disengaged from the containing cavity. Therefore, the orthosis for scoliosis avoids the problem of correction failure caused by the fact that the rod body slides out of the sleeve, and further has the advantage of improving stability after implantation.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to an orthotic device for scoliosis and an orthotic system having the orthotic device. Background Technology

[0002] Growth rod (orthopedic) technology is a non-fusion corrective surgery used for early-onset scoliosis in children or idiopathic scoliosis in adolescents. It is generally used for growing and developing minors, preserving the spine's growth potential while maintaining coronal and sagittal plane balance, and allowing the thoracic cavity to continue growing, thus improving thoracic volume and cardiopulmonary function. Conventional growth rod techniques typically require repeated open surgeries to ensure normal spinal growth; patients need to undergo growth rod lengthening surgery every six months, which significantly increases the risk of complications.

[0003] In related technologies, growth rods consist of a rod body and a cylinder, with the rod body sliding relative to the cylinder. As the child grows, the overall length of the growth rod is extended. During the patient's spinal growth, this type of growth rod can self-extend through a non-rigid, fixed sliding structure, thus achieving coronal and sagittal spinal correction without repeated invasive surgeries, while not affecting the patient's axial spinal growth. However, with increasing implantation time, unexpected spinal growth and increased daily activities can cause the rod body to detach from the cylinder, leading to growth rod failure. Utility Model Content

[0004] This invention aims to at least partially solve one of the technical problems in related technologies. To this end, embodiments of this invention provide an orthotic device for scoliosis. This orthotic device for scoliosis thus has the advantage of improving post-implantation stability and avoiding the problem of growth rod implantation failure.

[0005] An embodiment of this utility model also proposes an orthopedic system.

[0006] The orthotic device for scoliosis according to this utility model includes a sleeve, a repositioning member, a first rod, and a second rod.

[0007] The sleeve has a receiving cavity, the reset member is disposed in the receiving cavity, and the end of the sleeve has a stop portion; the first rod and the second rod are disposed opposite to each other on the sleeve, and the end of the second rod is provided with an anti-disengagement portion, the anti-disengagement portion is slidably inserted into the receiving cavity, the anti-disengagement portion abuts against the reset member, and the anti-disengagement portion can abut against the stop portion to prevent the anti-disengagement portion from disengaging from the receiving cavity.

[0008] The scoliosis orthosis of this utility model, by setting a stop on the sleeve to limit the sliding rod (second rod) and setting an anti-dislocation part on the sliding rod, can prevent the end of the rod from falling out of the sleeve and causing the orthosis to fail in some cases. This is because the slid-out rod cannot provide the necessary support and corrective force, which may lead to the partial or complete loss of the previous corrective results, so that the spine can grow in the ideal state.

[0009] Therefore, the scoliosis orthosis of this utility model avoids the problem of correction failure caused by the rod slipping out of the sleeve, and thus has the advantage of improving the stability after implantation.

[0010] In some embodiments, the sleeve includes a cylindrical body and an end cap. The sleeve has a first end and a second end disposed opposite to each other along its length. The first rod is fixedly connected to the first end of the cylindrical body. The end cap is detachably engaged with the second end of the sleeve. The end cap has the stop portion, and the second rod passes through the stop portion.

[0011] In some embodiments, the end cap includes a cap body and an annular portion extending along the thickness direction of the cap body along the peripheral wall of the cap body. The annular portion is fitted onto the second end of the sleeve. The cap body has a mating hole through which the second rod body passes. The diameter of the mating hole is smaller than the diameter of the receiving cavity, so as to form the stop portion on the end cap. The anti-displacement portion is stopped within the receiving cavity.

[0012] In some embodiments, the cover has one of a first anti-spin groove and a first anti-spin convexity, and the outer wall surface of the second rod has the other of the first anti-spin groove and the first anti-spin convexity, wherein the first anti-spin convexity is disposed within the first anti-spin groove.

[0013] In some embodiments, the ring portion has one of a second anti-spin groove and a second anti-spin convexity, and the outer wall surface of the cylinder has the other of the second anti-spin groove and the second anti-spin convexity, with the second anti-spin convexity disposed within the second anti-spin groove.

[0014] In some embodiments, the second rod body includes a sliding section, an anti-rotation section, and a round rod section connected in sequence. The diameter of the sliding section is larger than the diameter of the anti-rotation section, the diameter of the round rod section, and the diameter of the mating hole, so as to form the anti-dislocation portion in the sliding section. The anti-rotation section passes through the mating hole of the cover body.

[0015] In some embodiments, the sleeve is a straight segment, the sliding segment and the anti-rotation segment are coaxially arranged straight segments, and the round bar segment is an arc segment with a pre-bent curvature.

[0016] In some embodiments, the sum of the lengths of the sliding section and the anti-rotation section is 25mm-60mm.

[0017] In some embodiments, the ring portion is provided with a pressure relief notch, which is located at the end of the ring portion away from the cover.

[0018] In some embodiments, the wall of the mating hole is provided with a plurality of anti-rotation notches to form a first anti-rotation groove.

[0019] In some embodiments, the length of the sleeve is 70mm-130mm.

[0020] In some embodiments, the sleeve has an observation window to observe the movement of the second rod.

[0021] In some embodiments, the sleeve is a radiation-permeable sleeve.

[0022] In some embodiments, at least one of the first rod and the second rod is a solid rod.

[0023] In some embodiments, the reset element is a compression spring.

[0024] In some embodiments, the reset element is a metal spring.

[0025] The orthopedic system of this utility model embodiment includes a plurality of pedicle screws and a scoliosis orthosis according to any one of the above-mentioned methods, wherein the first rod and the second rod of the orthosis are respectively fixed to the upper and lower regions of the spine by the pedicle screws. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the sagittal plane implantation extension state of the orthotic device for scoliosis according to an embodiment of the present invention.

[0027] Figure 2 This is a schematic diagram of the coronal plane implantation compression state of the orthotic device for scoliosis according to an embodiment of the present invention.

[0028] Figure 3 This is a front view of an orthotic device for scoliosis according to an embodiment of the present invention.

[0029] Figure 4 This is a partial view of the orthotic device for scoliosis according to an embodiment of the present invention, showing the sleeve portion.

[0030] Figure 5 This is a partial view of the orthotic device for scoliosis according to an embodiment of the present invention, showing the sleeve near the second end.

[0031] Figure 6 yes Figure 3A cross-sectional view along the AA direction.

[0032] Figure 7 yes Figure 7 A partial view near the second end.

[0033] Figure 8 yes Figure 3 Cross-sectional view near the second end.

[0034] Figure 9 This is a perspective view of the end cap of an embodiment of the present utility model.

[0035] Figure 10 This is another perspective view of the end cap of an embodiment of the present utility model.

[0036] Figure 11 This is a perspective view of the second rod in an embodiment of the present invention.

[0037] Figure label:

[0038] Orthopedic device 100; pedicle screw 200; spine 300;

[0039] Sleeve 1; Cylinder body 11; First end 111; Second end 112; Observation window 113; Second anti-rotation groove 114;

[0040] End cap 12; Cover body (stop part) 121; First anti-rotation groove 1211; Mating hole 1212;

[0041] Ring body 122; Second anti-rotation protrusion 1221; Pressure relief notch 1222;

[0042] Reset component 2;

[0043] First rod body 3;

[0044] Second rod body 4; sliding section 41; anti-dislocation part 411; anti-rotation section 42; first anti-rotation protrusion 421; round rod section 43. Detailed Implementation

[0045] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0046] The following is for reference. Figures 1-11 This invention describes an orthosis 100 and orthotic system for scoliosis of the spine 300 according to an embodiment of the present invention.

[0047] The orthotic device 100 for scoliosis of the spine 300 according to this utility model embodiment includes a sleeve 1, a repositioning member 2, a first rod 3, and a second rod 4.

[0048] The sleeve 1 has a receiving cavity, the reset member 2 is disposed in the receiving cavity, and the end of the sleeve 1 has a stop portion; the first rod 3 and the second rod 4 are disposed opposite to each other on the sleeve 1, and the end of the second rod 4 is provided with an anti-dislocation portion 411, which is slidably inserted into the receiving cavity. The anti-dislocation portion 411 abuts against the reset member 2, and the anti-dislocation portion 411 can abut against the stop portion to prevent the anti-dislocation portion 411 from dislodging from the receiving cavity.

[0049] The orthotic device 100 for scoliosis of the spine 300 of this utility model provides a stop on the sleeve 1 to limit the sliding rod (second rod 4) and provides an anti-dislocation part 411 on the sliding rod. In some cases, this can prevent the end of the rod from falling out of the sleeve 1 and causing the orthotic device 100 to fail. This is because the slid-out rod cannot provide the necessary support and corrective force, which may lead to the partial or complete loss of the previous corrective results, so that the spine 300 can grow in the ideal state.

[0050] Therefore, the orthotic device 100 for scoliosis of the spine 300 in this embodiment of the present invention avoids the problem of correction failure caused by the rod slipping out of the sleeve 1, and thus has the advantage of improving the stability after implantation.

[0051] like Figures 4 to 10 As shown, the sleeve 1 includes a cylinder 11 and an end cap 12 disposed at the end of the cylinder 11. The sleeve 1 has a first end 111 and a second end 112 disposed opposite to each other along its length extension direction. A first rod 3 is fixedly connected to the first end 111 of the cylinder 11. The end cap 12 is detachably engaged with the second end 112 of the sleeve 1. The end cap 12 has a stop portion, and the second rod 4 passes through the stop portion.

[0052] The orthotic device 100 for scoliosis of the spine 300 of this utility model consists of a sleeve 1 divided into a cylinder 11 and an end cap 12 disposed at the end of the cylinder 11. During assembly, the portion of the second rod 4 with the anti-dislocation part 411 can be inserted into the cylinder 11 first, and then the end cap 12 can be sealed onto the cylinder 11, thereby achieving the installation and fixation of the sleeve 1 and the second rod 4. Therefore, the orthotic device 100 for scoliosis of the spine 300 has the advantages of simple structure and high ease of installation.

[0053] like Figures 7 to 10 As shown, the end cap 12 includes a cap body 121 and an annular portion 122 extending along the thickness direction of the cap body 121 along the peripheral wall of the cap body 121. The annular portion 122 is fitted onto the second end 112 of the sleeve 1. The cap body 121 has a mating hole 1212 for the second rod 4 to pass through. The diameter of the mating hole 1212 is smaller than the diameter of the receiving cavity, so as to form a stop portion in the end cap 12.

[0054] The orthotic device 100 for scoliosis of the spine 300 of this utility model divides the end cap 12 into a cap body 121 and a ring body 122, and fits the ring body 122 onto the second end 112 of the cylinder 11. This helps to increase the installation contact surface between the end cap 12 and the sleeve 1. The increase in contact surface can prevent the end cap 12 from shaking relative to the cylinder 11, thereby improving the stability of the fit between the ring body 122 and the sleeve 1.

[0055] like Figures 8 to 10 As shown, the cover 121 has one of a first anti-spin groove 1211 and a first anti-spin protrusion 421, and the outer wall surface of the second rod 4 has the other of the first anti-spin groove 1211 and the first anti-spin protrusion 421. The first anti-spin protrusion 421 is disposed within the first anti-spin groove 1211. In other words, the cover 121 has the first anti-spin groove 1211 and the outer wall surface of the second rod 4 has the first anti-spin protrusion 421, or the cover 121 has the first anti-spin protrusion 421 and the outer wall surface of the second rod 4 has the first anti-spin groove 1211.

[0056] The orthosis 100 for scoliosis of the spine 300 of this utility model prevents the second rod 4 from rotating relative to the cover 121 by providing a first anti-rotation groove 1211 and a first anti-rotation protrusion 421 between the cover 121 and the second rod 4. This allows the orthosis 100 to guide the axial growth of the spine 300 while also restricting vertebral torsion. Torsion of the second rod 4 can alter the direction and distribution of force applied to the spine 300, thus affecting the correction effect. This may prevent the correction plan from proceeding as expected, or even worsen the degree of scoliosis. Therefore, the orthosis 100 for scoliosis of the spine 300 of this utility model can prevent the problem of poor correction effect caused by torsion.

[0057] At the same time, such as Figure 7 and Figure 10 As shown, the ring portion 122 has one of a second anti-rotation groove 114 and a second anti-rotation protrusion 1221, and the outer wall surface of the cylinder 11 has the other of the second anti-rotation groove 114 and the second anti-rotation protrusion 1221. The first anti-rotation protrusion 421 is disposed within the first anti-rotation groove 1211. This prevents the end cap 12 from rotating relative to the cylinder 11, further preventing the torsion of the second rod 4. Therefore, the orthotic 100 for scoliosis of the spine 300 improves the effect of correcting the spine 300.

[0058] like Figure 7 and Figure 11As shown, the second rod 4 includes a sliding section 41, an anti-rotation section 42, and a round rod section 43 connected in sequence. The diameter of the sliding section 41 is larger than the diameter of the anti-rotation section 42, the diameter of the round rod section 43, and the diameter of the mating hole 1212, so as to form an anti-dislocation part 411 in the sliding section 41. The anti-rotation section 42 passes through the mating hole 1212 of the cover 121. It can be understood that a stepped surface is formed at the connection between the sliding section 41 and the anti-rotation section 42.

[0059] The orthotic 100 for scoliosis of the spine 300 of this utility model embodiment divides the second rod 4 into a sliding section 41, an anti-rotation section 42, and a round rod section 43 connected in sequence. The diameter of the sliding section 41 is larger than the diameter of the anti-rotation section 42, the diameter of the round rod section 43, and the diameter of the mating hole 1212. Thus, while ensuring the movement of the sliding section 41, it can also abut against the cover 121 to form a limiting position. Therefore, the limiting position of the second rod 4 can be achieved simply by adjusting the diameter of each segment of the second rod 4. Therefore, the orthotic 100 for scoliosis of the spine 300 has the advantage of simple structure.

[0060] Furthermore, for example, such as Figure 8 and Figure 11 As shown, the outer wall surface of the anti-spin section 42 can be provided with a first anti-spin protrusion 421. There can be multiple first anti-spin protrusions 421, which extend along the axial direction of the sleeve 1. The area of ​​the cover 121 with the mating hole 1212 is provided with multiple first anti-spin grooves 1211. The multiple first anti-spin protrusions 421 are arranged one-to-one in the multiple first anti-spin grooves 1211.

[0061] like Figure 7 and Figure 11 As shown, the sleeve 1 is a straight segment, the sliding segment 41 and the anti-rotation segment 42 are straight segments set coaxially, and the round bar segment 43 (a straight segment in the figure, which needs to be pre-bent before implantation according to different patients) is an arc segment with a pre-bent curvature.

[0062] The orthotic device 100 for scoliosis of the spine 300 in this embodiment of the present invention sets the sleeve 1 as a straight line. Because the anteroposterior radiograph of a normal spine 300 is a vertical straight line, in order to ensure that the deformed spine 300 restores its normal physiological curvature, the middle extension component is designed as a straight shape. The middle repositioning component 2 provides support and can slowly traction the spine 300 to restore its normal curvature. The middle arc-shaped traction structure pulls the entire spine 300 along a straight line when viewed on the anteroposterior radiograph. However, in the lateral radiograph, the spine 300 can only extend along a fixed curvature, which may cause excessive or insufficient traction of the spine 300, or even damage to the spinal nerves. The straight traction ensures normal traction of the spine 300 in the anteroposterior radiograph, while the lateral traction is not restricted and can self-correct as the child's spine 300 grows normally without damaging the spine 300.

[0063] The sum of the lengths of the sliding segment 41 and the anti-rotation segment 42 is 25mm-60mm. Therefore, the orthosis 100 for scoliosis of the spine 300 of this embodiment, by limiting the length between the sliding segment 41 and the anti-rotation segment 42, avoids the problem that an excessively long segment might exceed the range requiring support or correction, causing additional discomfort or even pain. Furthermore, an excessively long segment may rub against the skin, especially when the body is bending or moving, increasing the risk of skin abrasion, redness, and even pressure sores. It also avoids the problem that an excessively short length between the sliding segment 41 and the anti-rotation segment 42 might not be able to maintain a stable position, easily slipping or shifting, affecting the overall performance of the orthosis and the patient's comfort. Therefore, reasonably setting the lengths of the sliding segment 41 and the anti-rotation segment 42 has the advantages of improving the implantation correction effect and reducing damage to the patient.

[0064] Optionally, the sum of the lengths of the sliding section 41 and the anti-rotation section 42 can be 25mm, 28mm, 30mm, 32mm, 34mm, 36mm, 39mm, 41mm, 43mm, 46mm, 48mm, 51mm, 53mm, 56mm, 58mm and 60mm.

[0065] like Figure 9 and Figure 10 As shown, the annular portion 122 is provided with a pressure-reducing notch 1222. This facilitates the press-fitting of the end cap 12 onto the cylinder 11, and the structure is relatively stable and not easily detached.

[0066] The length of sleeve 1 is 70mm-130mm. Therefore, by limiting the length of sleeve 1, it is possible to avoid the possibility that an excessively long sleeve 1 could restrict the normal range of motion of certain parts of the body, such as rotation and bending of the shoulders, back, or waist, thus affecting freedom of movement in daily life. At the same time, limiting the length of sleeve 1 to an excessively long length could also result in the overall structure of the orthosis 100 being less compact, affecting its stability and fixation effect, thereby weakening the efficiency of the transmission of corrective force.

[0067] Furthermore, this design avoids situations where the sleeve 1 is too short to provide sufficient support area, which could lead to inadequate support for the spinal 300 area requiring support, weakening the corrective effect and hindering the improvement of the condition. Moreover, a shorter sleeve 1 may be difficult to maintain in the correct position, easily slipping or shifting, affecting the function of the orthosis 100 and the wearer's comfort.

[0068] Optionally, the length of the sleeve 1 is 70mm, 74mm, 76mm, 80mm, 84mm, 86mm, 90mm, 94mm, 96mm, 100mm, 104mm, 106mm, 110mm, 114mm, 116mm, 118mm, 120mm, 124mm, 126mm, 128mm and 130mm.

[0069] like Figure 7 and Figure 11 As shown, the sleeve 1 has an observation window 113 to observe the movement of the second rod 4.

[0070] During the implantation of the orthotic device 100, the position of the spring and the opening status can be observed in real time through the observation window 113 to determine whether the height of the repositioning component 2 after compression meets the patient's opening requirements, thereby improving the accuracy of implantation.

[0071] Furthermore, observation window 113 is a strip-shaped observation window.

[0072] Optionally, the sleeve 1 is a radiopaque sleeve 1. This allows for monitoring of the spring's state via imaging equipment (such as X-rays) during postoperative follow-up, enabling assessment of the spring's expansion length and corrective effect. Furthermore, the sleeve 1 can be a carbon fiber sleeve 1. This not only offers good portability but also meets the requirement of monitoring the spring's position via imaging equipment during postoperative follow-up.

[0073] At least one of the first rod 3 and the second rod 4 is a solid rod. Because of its uniform material distribution and lack of internal voids, a solid rod provides greater resistance to bending and torsion. This means it can more effectively resist external forces, providing stable and durable support, which helps to better correct scoliosis. At the same time, the solid structure reduces the risk of fracture due to material fatigue or localized stress concentration, extending the service life of the orthosis 100. A solid rod is less prone to deformation under high pressure, ensuring stability and reliability during long-term use. Due to its enclosed structure, there is no possibility of external substances entering the internal space, thus reducing the risk of infection and other complications.

[0074] Furthermore, solid rods can be made from different types of biocompatible materials (such as titanium alloys, stainless steel, etc.) as needed. These materials are not only harmless to the human body, but their physical properties can also be adjusted according to specific requirements.

[0075] Optionally, the repositioning element 2 is a compression spring. Different elastic springs are selected to control the support force and displacement of the spine 300, ensuring sufficient support for the growth of the spine 300. Clinicians determine the required opening distance and support force of the orthopedic system according to the deformity of different patients. The specific parameters of the corresponding springs can be calculated by referring to the formula below, and then the corresponding springs are selected and placed into the sleeve 1 to make a customized orthopedic system.

[0076] The basic formulas for designing and calculating cylindrical helical compression springs are:

[0077]

[0078] In the formula:

[0079] τ - Shear stress (MPa);

[0080] τ p - Allowable shear stress (MPa);

[0081] F - Working load of the spring (N);

[0082] f - Deformation under working load (mm);

[0083] k - Spring stiffness (N / mm);

[0084] U - Spring deformation energy (N·mm);

[0085] d - Material diameter (mm);

[0086] D - Spring mean diameter (mm);

[0087] C - Wound ratio, C = D / d;

[0088] n - the effective number of coils of the spring;

[0089] G - Shear modulus of the material (MPa).

[0090] K - curvature coefficient, calculated by the following formula:

[0091]

[0092] From the above formula, a formula for calculating the diameter of the material can be derived:

[0093]

[0094] A formula for calculating the effective number of spring coils can be derived:

[0095]

[0096] The surgeon can observe the spring position and expansion status in real time during the implantation of the orthosis 100 to determine whether the height of the compressed repositioning element 2 meets the patient's expansion requirements. Because different elastic springs are selected to control the support force and displacement of the spine 300, ensuring sufficient support for the growth of the spine 300, clinicians can determine the required expansion distance and support force of the orthotic system based on the deformity of different patients. The specific parameters of the corresponding springs can be calculated using the formula below, and then the corresponding springs can be selected and inserted into the sleeve 1 to create a customized orthotic system.

[0097] The metal spring is made of a photosensitive metal material, such as stainless steel.

[0098] Multiple pedicle screws 200 and a scoliosis orthosis 100 for the spine 300 according to any one of the above, wherein the first rod 3 and the second rod 4 of the orthosis 100 are respectively fixed to the upper and lower regions of the spine 300 by pedicle screws 200.

[0099] Furthermore, multiple sets of orthotics 100 for scoliosis of the spine 300, wherein two sets of orthotics 100 are arranged in a mirror-symmetrical manner about the sagittal plane of the spine 300, and the first rod 3 of each set of orthotics 100.

[0100] Therefore, the orthopedic system of this utility model embodiment avoids the problem of correction failure caused by the rod slipping out of the sleeve 1, and thus has the advantage of improving post-implantation stability.

[0101] The first rod 3 and the second rod 4 are fixed to the head and tail ends of the orthopedic segment by connecting the pedicle screw 200. The rods can be equipped with anti-rotation structures to limit the vertebral torsion in the middle of the orthopedic segment when the vertebral body with the screw is straightened in the coronal position, so that the spine 300 grows axially in an ideal state.

[0102] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0103] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0104] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0105] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0106] In this utility model, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0107] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A scoliosis orthosis, characterized in that, include: A sleeve and a reset member, the sleeve having a receiving cavity, the reset member being disposed within the receiving cavity, and a stop portion being provided at the end of the sleeve; A first rod and a second rod are disposed opposite to each other on the sleeve. The end of the second rod is provided with an anti-dislocation part. The anti-dislocation part is slidably inserted into the receiving cavity and abuts against the reset member. The anti-dislocation part can also abut against the stop part to prevent the anti-dislocation part from coming out of the receiving cavity.

2. The orthotic device for scoliosis according to claim 1, characterized in that, The sleeve includes a cylindrical body and an end cap. The sleeve has a first end and a second end that are disposed opposite each other along its length. The first rod is fixedly connected to the first end of the cylindrical body. The end cap is detachably engaged with the second end of the sleeve. The end cap has the stop portion, and the second rod passes through the stop portion.

3. The orthotic device for scoliosis according to claim 2, characterized in that, The end cap includes a cap body and an annular portion extending along the thickness direction of the cap body along the peripheral wall of the cap body. The annular portion is fitted onto the second end of the sleeve. The cap body has a mating hole for the second rod to pass through. The diameter of the mating hole is smaller than the diameter of the receiving cavity, so as to form the stop portion on the end cap. The anti-displacement portion is stopped in the receiving cavity.

4. The orthotic device for scoliosis according to claim 3, characterized in that, The cover has one of a first anti-spin groove and a first anti-spin convexity, and the outer wall of the second rod has the other of the first anti-spin groove and the first anti-spin convexity, with the first anti-spin convexity disposed in the first anti-spin groove; And / or, the ring portion has one of a second anti-spin groove and a second anti-spin convexity, the outer wall surface of the cylinder has the other of the second anti-spin groove and the second anti-spin convexity, and the second anti-spin convexity is disposed within the second anti-spin groove.

5. The orthotic device for scoliosis according to claim 3, characterized in that, The second rod includes a sliding section, an anti-rotation section, and a round rod section connected in sequence. The diameter of the sliding section is larger than the diameter of the anti-rotation section, the diameter of the round rod section, and the diameter of the mating hole, so as to form the anti-dislocation part in the sliding section. The anti-rotation section passes through the mating hole of the cover.

6. The orthotic device for scoliosis according to claim 5, characterized in that, The sleeve is a straight section, the sliding section and the anti-rotation section are coaxial straight sections, and the round bar section is an arc-shaped section with a pre-bent curvature; And / or, the sum of the lengths of the sliding section and the anti-rotation section is 25mm-60mm.

7. The orthotic device for scoliosis according to claim 3, characterized in that, The ring body is provided with a pressure relief notch, which is located at the end of the ring body away from the cover body. And / or, the wall of the mating hole is provided with multiple anti-rotation notches to form a first anti-rotation groove.

8. The orthotic device for scoliosis according to claim 1, characterized in that, The length of the sleeve is 70mm-130mm; And / or, the sleeve has an observation window to observe the movement of the second rod; And / or, the sleeve is a radiation-permeable sleeve.

9. The orthotic device for scoliosis according to claim 1, characterized in that, At least one of the first rod and the second rod is a solid rod; And / or, the reset element is a compression spring; And / or, the reset element is a metal spring.

10. An orthopedic system, characterized in that, It includes a plurality of pedicle screws and a scoliosis orthosis according to any one of claims 1-9, wherein the first rod and the second rod of the orthosis are respectively fixed to the upper and lower regions of the spine by the pedicle screws.

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