Flexible orthopedic system

Abstract

The present invention provides a flexible orthopedic system, which is used to be arranged on a strip-shaped predetermined object. The predetermined object is longitudinal along its own extension direction, and the predetermined object has a reference surface extending longitudinally. The two sides of the reference surface are the first side and the second side respectively. The flexible orthopedic system includes: a transverse connection component, a flexible connection body, a first fixing screw, and a first turning screw. The transverse connection component is used to be fixed on the predetermined object across the reference surface. The first turning screw is used to be fixed on the predetermined object on the first side and is located at a different longitudinal position from the transverse connection component. The first fixing screw is used to be fixed on the predetermined object on the second side. One end of the flexible connection body is used to be connected to a part of the transverse connection component on the first side, and the other end of the flexible connection body is used to change the extension direction through the first turning screw and then cross the reference surface to be connected to the first fixing screw.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly to a flexible orthopedic system. Background Art

[0002] Abnormal development of the spine can cause deformities such as scoliosis and posteroscoliosis, which will continue to worsen with growth, and then lead to severe trunk deformities, seriously affecting the physical and mental health of patients. With the in-depth understanding of the three-dimensional deformity of scoliosis, the development of spinal internal fixation technology, and the development of spinal osteotomy technology, for patients in the developmental maturity stage, the use of pedicle screw-rod correction systems can achieve satisfactory results. However, for children and adolescents with scoliosis of the spine who are immature and still have great growth potential, traditional treatment methods include braces, growth guidance techniques (including traditional growth rods, magnetically controlled growth rods), and direct fusion, etc., but there are many difficulties and problems, the treatment effect is poor, and postoperative scoliosis recurrence and aggravation often occur before the end of the patient's growth and development, which is still a difficult problem in the field of spinal surgery.

[0003] For the growing spine, the treatment not only needs to correct the deformity, but more importantly, maintain the growth of the spine. Currently, orthopedic devices for scoliosis, kyphoscoliosis and other deformities in children and adolescents with great growth potential basically do not solve the contradictions and difficulties between deformity correction and continuous growth. The rigid pedicle screw-rod system can achieve the correction of spinal stiffness, but the disadvantage is that it limits the flexibility and growth potential of the spine, affects the normal growth of the spine, and the growth of the spine can produce a crankshaft phenomenon, leading to deformity recurrence and aggravation. There are also a small number of products such as growth valves, growth rods, magnetically controlled growth rods, etc. in the market, hoping to meet the growth of the patient's spine and maintain orthosis through continuous expansion inside and outside the body after the first correction operation, but most of them develop recurrence and aggravation because the correction force is concentrated at the upper and lower ends of the orthosis, and the spinal deformity area, especially the apical vertebra, cannot be controlled; the growth of the spine will not grow along the axis of the rigid system; some systems cannot be expanded after 1 to 2 expansions after the operation, etc., and it is often difficult to obtain satisfactory correction effects.

[0004] How to effectively solve the contradiction between spinal orthosis and continuous growth of the spine and orthose the scoliosis of the spine in infants and young people has always been an issue actively explored and solved by those in this field at home and abroad. Summary of the Invention

[0005] The purpose of the present invention is to provide a flexible orthopedic system to solve the problem that the existing spinal orthopedic systems are difficult to achieve satisfactory correction effects.

[0006] To solve the above technical problems, the present invention provides a flexible orthopedic system, which is used to be disposed on a strip-shaped predetermined object. The predetermined object is longitudinal along its own extension direction, and the predetermined object has a reference surface extending longitudinally. On both sides of the reference surface are a first side and a second side respectively. The flexible orthopedic system is characterized in that it includes: a transverse connection assembly, a flexible connection body, a first fixing screw, and a first turning screw;

[0007] The transverse connection assembly is used to be fixed on the predetermined object across the reference surface;

[0008] The first turning screw is used to be fixed on the predetermined object on the first side, and is located at a different longitudinal position from the transverse connection assembly;

[0009] The first fixing screw is used to be fixed on the predetermined object on the second side;

[0010] One end of the flexible connection body is used to be connected to a part of the transverse connection assembly on the first side, and the other end of the flexible connection body is used to cross the reference surface after changing the extension direction through the first turning screw and is connected to the first fixing screw.

[0011] Optionally, the flexible orthopedic system includes: a transition screw; the transition screw includes an intermediate limit screw and / or a second turning screw;

[0012] The intermediate limit screw is used to be fixed on the predetermined object on the first side; the intermediate limit screw is used to be disposed between the transverse connection assembly and the first turning screw; the intermediate limit screw is provided for the flexible connection body to pass through axially movably, and the intermediate limit screw is used to limit the radial position of the flexible connection body;

[0013] The second turning screw is used to be fixed on the predetermined object on the second side; the second turning screw is used to be disposed between the first turning screw and the first fixing screw, and the second turning screw is used to change the extension direction of the flexible connection body.

[0014] Optionally, in the flexible orthopedic system, at least one of the intermediate limit screw, the first turning screw, and the second turning screw includes a first nail seat, a first plug, and a retaining clamp. The first nail seat has a first through hole opened radially and a first plug hole opened axially; the first through hole is provided for the flexible connection body to pass through movably, the first plug hole communicates with the first through hole, and the first plug is used to be screwed into the first plug hole; the retaining clamp is connected to the screwing end of the first plug and is used to limit the screwing position of the first plug.

[0015] Optionally, in the flexible orthopedic system, the anti-retreat clamp is rotatably connected to the first plug along the circumferential direction of the first plug and is restricted in the axial position relative to the first plug; the first nail seat has a clamping groove, and the anti-retreat clamp has an elastic clamping arm, and the clamping arm is used to snap into the clamping groove to restrict the axial position of the anti-retreat clamp relative to the first nail seat.

[0016] Optionally, in the flexible orthopedic system, the first through hole of the first turning screw and / or the second turning screw extends in a curved manner.

[0017] Optionally, in the flexible orthopedic system, at least one of the intermediate limit screw, the first turning screw and the second turning screw includes a third nail seat, and the third nail seat has a third through hole opened along the radial direction, and the third through hole is used for the flexible connecting body to pass through movably.

[0018] Optionally, the flexible orthopedic system further includes: a positioning member; the positioning member is respectively connected to the first turning screw and the second turning screw to restrict the relative positions of the first turning screw and the second turning screw.

[0019] Optionally, in the flexible orthopedic system, the transverse connection assembly includes a first transverse connecting member, a second fixing screw and a third fixing screw;

[0020] The first transverse connecting member extends across the reference plane, one end of the first transverse connecting member on the first side is recessed along the screwing-in direction of the second fixing screw, the first transverse connecting member has a connection port in the recessed area, and the second fixing screw is used to pass through the connection port and be fixed to the predetermined object on the first side;

[0021] One end of the first transverse connecting member on the second side is connected to the third fixing screw and is used to be fixed to the predetermined object on the second side.

[0022] Optionally, in the flexible orthopedic system, the second fixing screw has a rotation-limiting portion, the rotation-limiting portion snaps into the connection port, and the connection port restricts the circumferential rotation of the rotation-limiting portion.

[0023] Optionally, in the flexible orthopedic system, the first fixing screw, the second fixing screw and the third fixing screw include a second nail seat and a second plug, the second nail seat has a second through hole opened along the radial direction and a second plug hole opened along the axial direction; the second through hole is used for the flexible connecting body or the first transverse connecting member to pass through, the second plug hole communicates with the second through hole, and the second plug is used to be screwed into the second plug hole to fix the flexible connecting body or the first transverse connecting member.

[0024] Optionally, in the flexible orthopedic system, the second fixing screw includes two of the second plugs. The second through holes of the second fixing screw are for two of the flexible connectors to pass through. The second socket has two of the second plug holes, and the two second plug holes overlap in the radial direction; at least one of the second plugs has a circumferential notch, and the circumferential notch is adapted to the circumcircle of the other second plug. The two second plugs are for screwing into the two second plug holes to respectively fix the two flexible connectors.

[0025] Optionally, in the flexible orthopedic system, the transverse connection assembly includes a second transverse connecting member, two fastening assemblies, a fourth fixing screw, and a fifth fixing screw;

[0026] The second transverse connecting member extends across the reference plane. The second transverse connecting member has two first fastening holes, and the two first fastening holes are distributed on both sides of the reference plane and are respectively for two of the fastening assemblies to pass through;

[0027] One end of the second transverse connecting member on the first side is connected to the fourth fixing screw through one of the fastening assemblies; one end of the second transverse connecting member on the second side is connected to the fifth fixing screw through the other fastening assembly;

[0028] The fourth fixing screw is for fixing to the predetermined object on the first side, and the fifth fixing screw is for fixing to the predetermined object on the second side.

[0029] Optionally, in the flexible orthopedic system, the fastening assembly includes a fastening nut and a third plug; the fourth fixing screw and the fifth fixing screw include a fourth socket; the fourth socket has a fourth plug hole axially formed therein; a part of the third plug is for screwing into the fourth plug hole, and another part of the third plug remains outside the fourth plug hole and passes through the first fastening hole. The fastening nut is threadedly connected to the part of the third plug passing through the first fastening hole to fasten the second transverse connecting member to the fourth fixing screw and the fifth fixing screw respectively.

[0030] Optionally, in the flexible orthopedic system, in the fourth fixing screw, the fourth socket further has a fourth through hole formed radially therein. The fourth through hole is for a flexible connector to pass through. The fourth through hole communicates with the fourth plug hole, and the third plug screwed into the fourth plug hole is used to fix the flexible connector.

[0031] Optionally, in the flexible orthopedic system, the transverse connection assembly further includes a sliding adjustment member; the sliding adjustment member is movably connected to the second transverse connection member along the extension direction of the second transverse connection member; the sliding adjustment member has a second set screw hole for the third set screw to pass through; within the moving stroke of the sliding adjustment member along the second transverse connection member, the third set screw can pass through the first set screw hole and the second set screw hole simultaneously.

[0032] Optionally, in the flexible orthopedic system, the first set screw hole is an elongated hole, and its long axis is arranged along the extension direction of the second transverse connection member; the second set screw hole is adapted to the third set screw.

[0033] Optionally, the flexible orthopedic system further includes a limit joint, and the limit joint is arranged at at least one end of the flexible connection body; the limit joint is used to limit the position of the flexible connection body along its axial direction relative to the first fixing screw and / or the transverse connection assembly.

[0034] Optionally, the flexible orthopedic system includes: two of the first fixing screws, two of the first turning screws, and two of the flexible connection bodies;

[0035] The two first fixing screws are longitudinally distributed on both sides of the transverse connection assembly;

[0036] The two first turning screws are longitudinally distributed on both sides of the transverse connection assembly;

[0037] One end of each of the two flexible connection bodies is connected to a part of the same transverse connection assembly on the first side; after the other ends of the two flexible connection bodies change their extension directions through different two first turning screws respectively, they are connected to different two first fixing screws.

[0038] Optionally, the flexible orthopedic system further includes: a protective sleeve; the protective sleeve is sleeved outside the exposed part of the flexible connection body.

[0039] In summary, the flexible orthopedic system provided by the present invention is configured to be disposed on a strip-shaped predetermined object. The predetermined object has a longitudinal direction along its own extension direction, and the predetermined object has a reference surface extending longitudinally. On both sides of the reference surface are a first side and a second side respectively. The flexible orthopedic system includes: a transverse connection assembly, a flexible connection body, a first fixing screw, and a first turning screw. The transverse connection assembly is used to be fixed on the predetermined object across the reference surface. The first turning screw is used to be fixed on the predetermined object on the first side and is located at a different longitudinal position from the transverse connection assembly. The first fixing screw is used to be fixed on the predetermined object on the second side. One end of the flexible connection body is used to be connected to a part of the transverse connection assembly on the first side, and the other end of the flexible connection body is used to change the extension direction through the first turning screw, cross the reference surface, and be connected to the first fixing screw.

[0040] With such a configuration, the flexible connection body is fixed on the predetermined object through the first fixing screw and the transverse connection assembly, and orthosis is achieved through the traction force of the flexible connection body, which belongs to a flexible fixation. In particular, when the adolescent spine is configured as the predetermined object, it can adapt to the continuous growth adjustment of the adolescent spine to achieve orthosis of the adolescent bones. After the operation, the external force for spine orthosis can be continued and the spine can grow flexibly, with less harm to bone development and good spine orthosis effect. In addition, since the transverse connection assembly is directly fixed on the predetermined object, the surgical wound surface is small, which is beneficial to the patient's recovery. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Those of ordinary skill in the art will understand that the provided drawings are used to better understand the present invention and do not constitute any limitation to the scope of the present invention. Among them:

[0042] Figure 1 is a perspective view of the flexible orthopedic system according to an embodiment of the present invention;

[0043] Figure 2 is a top view of the flexible orthopedic system according to an embodiment of the present invention;

[0044] Figure 3 is a schematic diagram of the transition screw according to an embodiment of the present invention;

[0045] Figure 4 is a schematic diagram of the cooperation between the transition screw and the flexible connection body according to an embodiment of the present invention;

[0046] Figure 5a is a perspective view of the first nail seat and the anti-back-off clamp assembled according to an embodiment of the present invention;

[0047] Figure 5b is a top view of the first nail seat and the anti-back-off clamp disassembled according to an embodiment of the present invention;

[0048] Figure 5c is an axial sectional view after decomposition of the first nail seat and the anti-retreat clamp of the embodiment of the present invention;

[0049] Figure 6a is a top view of the second bent screw of the embodiment of the present invention, in which the first plug and the anti-retreat clamp are not shown;

[0050] Figure 6b is a side view of the second bent screw of the embodiment of the present invention, in which the first plug and the anti-retreat clamp are not shown;

[0051] Figure 7a is a top view of the first cross-connecting member of the embodiment of the present invention;

[0052] Figure 7b is a side view of the first cross-connecting member of the embodiment of the present invention;

[0053] Figure 8 is a schematic diagram of the fixing screw of the embodiment of the present invention;

[0054] Figure 9a is a side view of the second fixing screw of the embodiment of the present invention, in which the second plug is not screwed in;

[0055] Figure 9b is an axial sectional view of the second fixing screw of the embodiment of the present invention, in which the second plug has been screwed in;

[0056] Figure 9c is a top view of the second fixing screw of the embodiment of the present invention, in which the second plug has been screwed in;

[0057] Figure 10a is a three-dimensional view of the second plug of the embodiment of the present invention;

[0058] Figure 10b is a top view of the second plug of the embodiment of the present invention;

[0059] Figure 11 is a three-dimensional view of a flexible orthopedic system of another example of the embodiment of the present invention, which does not include a positioning member;

[0060] Figure 12 is a three-dimensional view of a flexible orthopedic system of another example of the embodiment of the present invention, which includes a positioning member;

[0061] Figure 13a and Figure 13b is a schematic diagram of a transition screw of another example of the embodiment of the present invention;

[0062] Figure 14 is a schematic diagram after assembly combination of the second cross-connecting member, the locking assembly and the fifth fixing screw of the embodiment of the present invention;

[0063] Figure 15a It is a schematic diagram after the assembly combination of the second horizontal connecting member and the sliding adjustment member in the embodiment of the present invention;

[0064] Figure 15b It is a schematic diagram of the second horizontal connecting member in the embodiment of the present invention;

[0065] Figure 15c It is a schematic diagram of the sliding adjustment member in the embodiment of the present invention;

[0066] Figure 15d It is a bottom view of the sliding adjustment member in the embodiment of the present invention;

[0067] Figure 16a It is a schematic diagram of the limit joint in the embodiment of the present invention;

[0068] Figure 16b It is an axial sectional view of the limit joint in the embodiment of the present invention.

[0069] In the drawings:

[0070] 01 - reference plane; 011 - first side; 012 - second side;

[0071] 10 - transverse connection assembly; 11 - first horizontal connecting member; 110 - connection port; 12 - second fixing screw; 121 - second nail seat; 121a - second through hole; 121b - second plug hole; 122 - second plug; 122a - circumferential notch; 122b - circumscribed circle; 123 - nail body; 124 - rotation limiting part; 13 - third fixing screw; 14 - second horizontal connecting member; 140 - first set screw hole; 141 - sliding groove; 15 - set screw assembly; 151 - set screw nut; 152 - third plug; 16 - fourth fixing screw; 161 - fourth nail seat; 161b - fourth through hole; 17 - fifth fixing screw; 18 - sliding adjustment member; 180 - second set screw hole; 181 - boss; 20 - flexible connection body; 21 - limit joint; 30 - first fixing screw; 40 - first turning screw; 50 - transition screw; 501 - first nail seat; 501a - first through hole; 501b - first plug hole; 501c - engaging groove; 502 - first plug; 502a - clamping groove; 503 - anti - rotation clamp; 503a - engaging arm; 503b - snap ring; 504 - nail body; 505 - third nail seat; 505a - third through hole; 505b - third plug hole; 505c - tool operation surface; 51 - intermediate limit screw; 52 - second turning screw; 60 - protective sleeve; 70 - positioning member. Detailed implementation manners

[0072] To make the objectives, advantages and features of the present invention clearer, the following further elaborates on the present invention in conjunction with the accompanying drawings and specific embodiments. It should be noted that the accompanying drawings are in very simplified forms and not drawn to scale, and are only used to conveniently and clearly assist in explaining the objectives of the embodiments of the present invention. In addition, the structures shown in the accompanying drawings are often part of the actual structures. In particular, the accompanying drawings need to show different emphases and sometimes use different scales.

[0073] As used in the present invention, the singular forms "a", "an" and "the" include plural objects. The term "or" is generally used in the sense of including "and / or". The term "several" is generally used in the sense of including "at least one". The term "at least two" is generally used in the sense of including "two or more". In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", "third" may explicitly or implicitly include one or at least two of such features. "One end" and "the other end", as well as "proximal end" and "distal end" generally refer to two corresponding parts, which not only include the endpoints. In addition, as used in the present invention, "mounted", "connected", "coupled", an element "disposed" on another element should be understood in a broad sense, and generally only indicates that there is a connection, coupling, cooperation or transmission relationship between the two elements, and the two elements can be directly or indirectly connected, coupled, cooperated or transmitted through an intermediate element, rather than being construed as indicating or implying the spatial position relationship between the two elements, that is, an element can be in any position such as inside, outside, above, below or on one side of another element, unless otherwise explicitly stated in the content. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. In addition, directional terms such as above, below, up, down, upward, downward, left, right, etc. are used with respect to the exemplary embodiments as shown in the drawings. The upward or upper direction faces the top of the corresponding drawing, and the downward or lower direction faces the bottom of the corresponding drawing.

[0074] The objective of the present invention is to provide a flexible orthopedic system to solve the problem that the existing spinal orthopedic systems are difficult to achieve satisfactory correction effects. The non-fusion growth rod technology is currently an ideal method for treating EOS. The design concept of the present invention is to use an elastic, non-fusion flexible system to obtain complete or partial correction of deformities through the first surgery, and during the growth process of the spine, it can adjustably meet the growth needs of the spine or some deformities can be gradually self-corrected during the growth process of the spine. This system meets the "tension band" mechanism, retains the spinal movement function, and can avoid or reduce the occurrence of the crankshaft phenomenon.

[0075] The following description is made with reference to the accompanying drawings.

[0076] The inventors' research found that in existing spinal orthopedic systems, although the rigid fixation scheme has a relatively strong link stiffness, it will limit the flexibility and growth potential of the spine and is not suitable for some teenagers in the growth and development stage. On the one hand, the flexible fixation scheme requires finding reliable fixation points, which often causes a large surgical wound surface and is not conducive to the patient's recovery. On the other hand, during the orthopedic process after surgery, a second operation may be required to cut the tissue to adjust the tension, causing more trauma, risks and economic pressure to the patient.

[0077] Please refer to Figure 1 and Figure 2 , based on the above research, the present invention provides a flexible orthopedic system, which is used to be arranged on a strip-shaped predetermined object. The predetermined object is longitudinal along its own extension direction. "Strip-shaped" means a shape in which the longitudinal dimension is much larger than the transverse dimension. For example, the ratio of the longitudinal dimension to the transverse dimension is greater than 2. The predetermined object has a reference surface 01 extending longitudinally; on both sides of the reference surface 01 are a first side 011 and a second side 012 respectively. Optionally, the predetermined object includes a scoliosis segment that bulges and bends towards the first side 011.

[0078] This embodiment is described by taking the spine as an example of the predetermined object. It should be noted that the spine is only an exemplary example of the predetermined object, rather than a limitation on the predetermined object. In some other application scenarios, a spine model, an animal, etc. can also be used as the predetermined object, and the flexible orthopedic system provided in this embodiment can be used to perform operations such as simulated surgery or force calibration on it. The present invention is not limited thereto. Generally, the spine has a normal physiological curvature, and the normal physiological curvature is along the sagittal plane of the human body. The flexible orthopedic system provided in this embodiment is mainly applicable to a spine with scoliosis. Scoliosis means that in addition to having a normal physiological curvature along the sagittal plane, the spine also has a lateral curvature along the coronal plane. In this embodiment, the reference plane 01 can be generally understood by referring to the sagittal plane. For a normal person's spine, the reference plane 01 coincides with the sagittal plane. However, for a patient with scoliosis, the reference plane 01 does not refer to a plane that completely coincides with its sagittal plane, but refers to the middle plane of the spine that bends and extends along the axis of the scoliotic spine. The first side 011 and the second side 012 on both sides of the reference plane 01 can be correspondingly understood as the left and right sides of the human body in the sagittal plane (of course, the left and right sides can also be arranged in the opposite way). For application scenarios where a spine model, an animal, etc. are used as the predetermined object, the reference plane 01 and its first side 011 and second side 012 can also be correspondingly defined, and the present invention will not elaborate further. Further, the spine includes a scoliotic segment that protrudes and bends towards the first side 011, and it is not limited to the spine only including a single scoliotic segment. Some patients may have an S-shaped curved spine. It can be understood that the protruding and bending directions of the upper and lower halves of the spine are different. Therefore, the predetermined object of the spine includes a scoliotic segment that protrudes and bends towards the first side 011, and the first side 011 and the second side 012 are opposite. The following will be described by combining Figure 1 and Figure 2 , and a spine that protrudes and bends towards the left will be used for exemplary illustration. Figure 1 and Figure 2 The spine shown only includes a single scoliotic segment, which protrudes and bends towards Figure 1 and Figure 2 the left side in Figure 2 . In Figure 2 , the reference plane 01 is an arc surface perpendicular to the paper surface. The left side of the reference plane 01 is the first side 011, and the right side of the reference plane 01 is the second side 012. In the scenario of applying to other spines or spine models, those skilled in the art can understand and replace the reference plane 01, the first side 011, and the second side 012 according to the above description.

[0079] The flexible orthopedic system includes: a transverse connection assembly 10, a flexible connection body 20, a first fixing screw 30, and a first bending screw 40; the transverse connection assembly 10 is used to be fixed on the predetermined object across the reference plane 01, and "across" means passing through the first side 011 and the second side 012 and laterally spanning the reference plane 01; the first bending screw 40 is used to be fixed on the predetermined object on the first side 011 and is located at a different longitudinal position from the transverse connection assembly 10; the first fixing screw 30 is used to be fixed on the predetermined object on the second side 012; one end of the flexible connection body 20 is used to be connected to a part of the transverse connection assembly 10 on the first side 011, and the other end of the flexible connection body 20 is used to change the extension direction through the first bending screw 40 and then span the reference plane 01 and be connected to the first fixing screw 30. With such a configuration, the flexible connection body 20 is fixed on the predetermined object through the first fixing screw 30 and the transverse connection assembly 10, and orthosis is achieved through the traction force of the flexible connection body 20, which belongs to a flexible fixation. In particular, when the adolescent spine is configured as the predetermined object, as the spine grows, the vertebral body spacing of the spine increases, driving the distance between the transverse connection assembly 10 and the first fixing screw 30 to increase, and the flexible connection body 20 is tensioned, capable of applying a force opposite to the convex bending direction of the scoliosis segment to the spine, so that the deformed side is subjected to a tensile force, driving the deformed side to be gradually corrected. Thus, the flexible orthopedic system can adapt to the continuous growth adjustment of the adolescent spine to achieve the orthosis of adolescent bones, can continue the external force for spine orthosis after surgery and allow the flexible growth of the spine, has less harm to bone development, has good spine orthosis effect, and does not require a second operation to adjust the tension after implantation, and the entire flexible orthopedic system can be removed through surgery until the orthosis is completed. Further, since the transverse connection assembly 10 is fixed on the spine across the reference plane 01, it can serve as a reliable fixed fulcrum and will not have problems such as movement or bending under the tension of the flexible connection body 20. And the flexible orthosis applies force through the flexible connection body 20, will not limit the flexibility of the spine, and has less restriction on the patient. In addition, since the transverse connection assembly 10 is directly fixed on the predetermined object, the surgical wound surface only involves the spine segment, the wound surface is small, which is beneficial to the patient's recovery. Of course, the flexible orthopedic system provided in this embodiment is not limited to being applied to the spine of adolescents, and can also be applied to the orthopedic treatment of the scoliosis spine of some adults, or operations such as simulating surgical training or evaluation on a spine model.

[0080] Preferably, the flexible orthopedic system includes: a transition screw 50; the transition screw 50 includes an intermediate limiting screw 51 and / or a second turning screw 52; the intermediate limiting screw 51 is used to be fixed on the predetermined object on the first side 011; the intermediate limiting screw 51 is used to be arranged between the transverse connection assembly 10 and the first turning screw 40, that is, located between the transverse connection assembly 10 and the first turning screw 40 along the extension direction of the flexible connection body 20; the flexible connection body 20 is axially movably penetrated through the intermediate limiting screw 51, and the intermediate limiting screw 51 is used to limit the radial position of the flexible connection body 20; the second turning screw 52 is used to be fixed on the predetermined object on the second side 012 and is located at the same longitudinal position as the first turning screw 40; the second turning screw 52 is used to be arranged between the first turning screw 40 and the first fixing screw 30, that is, located between the first turning screw 40 and the first fixing screw 30 along the extension direction of the flexible connection body 20, and the second turning screw 52 is used to change the extension direction of the flexible connection body 20. It should be noted that the first turning screw 40 and the second turning screw 52 being located at the same longitudinal position means that the two are approximately symmetric with respect to the reference plane 01. When the scoliosis segment of the spine is short, the transition screw 50 may not be provided. However, when the scoliosis segment of the spine is long, the arrangement of the intermediate limiting screw 51 and the second turning screw 52 can enable the flexible connection body 20 to extend along the scoliosis segment of the spine, improving the force application effect and orthopedic effect of the flexible connection body 20. It should be noted that the number of the intermediate limiting screws 51 in this embodiment is not limited and can be adaptively set according to the length of the scoliosis segment of the spine.

[0081] Please refer to Figures 3 to 5c , in an alternative exemplary embodiment, at least one of the intermediate limiting screw 51, the first turning screw 40 and the second turning screw 52 includes a first nail seat 501, a first plug 502 and an anti-back-off clamp 503, preferably further including a nail body 504 connected to the first nail seat 501; the nail body 504 has an external thread and is used to be screwed into the spine. The first nail seat 501 has a first through hole 501a opened radially and a first plug hole 501b opened axially; the first through hole 501a is used for the flexible connection body 20 to be movably penetrated through, the first plug hole 501b is communicated with the first through hole 501a, and the first plug 502 is used to be screwed into the first plug hole 501b; the anti-back-off clamp 503 is connected to the screwing end of the first plug 502 (and Figure 5b and Figure 5cis connected to the lower end of the first plug 502) to limit the screwing position of the first plug 502. Optionally, the first plug hole 501b has an internal thread, and the first plug 502 has an external thread adapted to the internal thread of the first plug hole 501b, and the first plug 502 can be screwed into the first plug hole 501b. The anti-backlash clamp 503 can limit the axial position of the first plug 502 in the first plug hole 501b after the first plug 502 is screwed into the first plug hole 501b to a predetermined depth, so that it will not spontaneously come out or be over-tightened spontaneously. Preferably, the structures of the intermediate limit screw 51, the first bent screw 40, and the second bent screw 52 are similar, and each includes a first nail seat 501, a first plug 502, an anti-backlash clamp 503, and a nail body 504.

[0082] Please refer to Figures 5a to 5c , preferably, the anti-backlash clamp 503 is rotatably connected to the first plug 502 along the circumferential direction of the first plug 502 and is restricted in the axial position relative to the first plug 502; the first nail seat 501 has a clamping groove 501c, and the anti-backlash clamp 503 has an elastic clamping arm 503a, and the clamping arm 503a is used to be clamped into the clamping groove 501c to limit the axial position of the anti-backlash clamp 503 relative to the first nail seat 501. In an alternative exemplary embodiment, the outer periphery of the first plug 502 has an annular clamp groove 502a, and the anti-backlash clamp 503 includes a snap ring 503b connected to the clamping arm 503a. The snap ring 503b has a certain ductility, and its inner diameter is adapted to the outer diameter of the clamp groove 502a. The snap ring 503b can be elastically deformed and clamped into the clamp groove 502a and can rotate circumferentially around the clamp groove 502a, but the snap ring 503b is restricted by the clamp groove 502a and cannot move axially along the first plug 502. Optionally, the clamping groove 501c is located on the side of the first plug hole 501b close to the nail body 504, and it is preferably an annular inwardly open groove. The inner diameter of the clamping groove 501c is larger than the minor diameter of the first plug hole 501b. During the screwing process, the clamping arm 503a is elastically deformed inwardly by the side wall of the first plug hole 501b. When the clamping arm 503a reaches the clamping groove 501c, it is no longer squeezed by the side wall of the first plug hole 501b, and the elastic deformation is restored and clamped into the clamping groove 501c. At this time, if Figure 4As shown, there is a certain gap between the first plug 502 and the flexible connector 20, ensuring that the flexible connector 20 can move axially within the first through-hole 501a while only restricting the radial position of the flexible connector 20. After the engaging arm 503a snaps into the engaging groove 501c, it can restrict the screwing position of the first plug 502. Continuing to screw in or out the first plug 502 will be subject to the relative force between the engaging arm 503a and the engaging groove 501c. Unless a force greater than the elastic deformation of the engaging arm 503a is applied, the first plug 502 will not spontaneously withdraw from or continue to screw into the first plug hole 501b, ensuring the long-term reliability of the transition screw 50 after being implanted into the human body. Preferably, the anti-back-off clamp 503 has at least 2 engaging arms 503a arranged radially opposite to each other. The anti-back-off clamp 503 can also have more than 3 engaging arms 503a evenly distributed circumferentially. Alternatively, the engaging arm 503a can be replaced by a circumferentially continuous engaging ring, which can be understood as multiple engaging arms 503a connected together circumferentially.

[0083] Preferably, please refer to Figure 6a and Figure 6b , the first through-hole 501a of the first angled screw 40 and / or the second angled screw 52 bends and extends, and its bending angle can be set according to actual needs. When the flexible connector 20 passes through the bent first through-hole 501a, its extension direction will be guided by the first through-hole 501a and changed. Further, the bending directions of the first through-holes 501a of the first angled screw 40 and the second angled screw 52 are opposite. Optionally, the first through-hole 501a of the intermediate limiting screw 51 can extend linearly or in a bent shape with a relatively large radius, that is, slightly bent, and this embodiment is not limited thereto.

[0084] Please refer to Figures 11 to 13b , in another alternative exemplary embodiment, at least one of the intermediate limiting screw 51, the first angled screw 40, and the second angled screw 52 includes a third screw base 505, and the third screw base 505 has a third through-hole 505a opened radially, and the third through-hole 505a is for the flexible connector 20 to pass through movably. It can be understood that since the flexible connector 20 needs to be able to move within the third through-hole 505a, the inner diameter of the third through-hole 505a can be configured to be slightly larger than the outer diameter of the flexible connector 20 so that the flexible connector 20 can move.

[0085] In some application scenarios, the intermediate limiting screw 51, the first angled screw 40, or the second angled screw 52 can be selected as similar ball head screws, such as Figure 13a and Figure 13b shown. Among them Figure 13b is Figure 13aAxial sectional view of the transitional screw shown. Generally, in addition to the third through-hole 505a through which the flexible connecting body 20 can pass, the ball head screw also has a third plug hole 505b along the axial direction, into which a set screw can be screwed to lock the component passing through the third through-hole 505a. In this embodiment, however, the intermediate limit screw 51, the first bent screw 40, and the second bent screw 52 do not need to lock the flexible connecting body 20. Therefore, the third through-hole 505a can be left empty without screwing in the set screw. With such a configuration, the intermediate limit screw 51, the first bent screw 40, or the second bent screw 52 can be selected from existing ball head screws without special customization. Specifically, the third through-hole 505a of the first bent screw 40 or the second bent screw 52 can also be bent and extended to adapt to guiding the flexible connecting body 20 to change the extension direction. Optionally, as shown in FIG. 13, the third screw base 505 has a tool operation surface 505c, which can be a plane that is relatively milled flat along the passing direction of the third through-hole 505a. During use, the tool operation surface 505c can be used for an operating tool (such as a wrench or a socket, etc.) to abut or clamp against, so that the operating tool can apply torque to the third screw base 505. Of course, it can be understood that the tool operation surface 505c is not limited to being relatively arranged along the passing direction of the third through-hole 505a, and it can be arranged at any circumferential position of the third screw base 505.

[0086] Please refer to Figure 1 and Figure 2 and, in combination with reference to Figure 7a and Figure 7b , in an alternative exemplary embodiment, the transverse connection assembly 10 includes a first transverse connecting member 11, a second fixing screw 12, and a third fixing screw 13; the first transverse connecting member 11 extends across the reference plane 01, one end of the first transverse connecting member 11 on the first side 011 is recessed along the screwing-in direction of the second fixing screw 12, the first transverse connecting member 11 has a connection port 110 in the recessed area, and the second fixing screw 12 is used to pass through the connection port 110 and fix to the predetermined object on the first side 011; one end of the first transverse connecting member 11 on the second side 012 is connected to the third fixing screw 13 and is used to fix to the predetermined object on the second side 012. Since one end of the first transverse connecting member 11 on the first side 011 is recessed, after the second fixing screw 12 is fixed, the recessed area presses under the second fixing screw 12, making the protruding screw head of the second fixing screw 12 lower, so that the notch after implantation can be reduced, which is beneficial to reducing the irritation to the tissue and reducing the foreign body sensation.

[0087] The structures of the first fixing screw 30, the second fixing screw 12, and the third fixing screw 13 can be the same or similar fixing screws. Please refer to Figure 8, in a demonstration example, the first fixing screw 30, the second fixing screw 12, and the third fixing screw 13 include a second nail seat 121 and a second plug 122, and preferably further include a nail body 123 connected to the second nail seat 121; the nail body 123 has an external thread for screwing into the spine. The second nail seat 121 has a second through hole 121a opened along the radial direction and a second plug hole 121b opened along the axial direction; the second through hole 121a is for the flexible connecting body 20 (such as the second through holes 121a of the first fixing screw 30 and the third fixing screw 13) or the first cross-linking member 11 (such as the second through hole 121a of the second fixing screw 12) to pass through, the second plug hole 121b communicates with the second through hole 121a, and the second plug 122 is for screwing into the second plug hole 121b to fix the flexible connecting body 20 or the first cross-linking member 11. The structures of the first fixing screw 30, the second fixing screw 12, and the third fixing screw 13 are substantially the same as Figure 3 the structure of the transition screw 50 shown, but the fixing screw does not include the anti-backlash clamp 503. Therefore, the second plug 122 screwing into the second plug hole 121b will not be restricted or hindered, so that it can be screwed until it abuts against the flexible connecting body 20 or the first cross-linking member 11 to tightly press and fix the flexible connecting body 20 or the first cross-linking member 11.

[0088] Optionally, one end of the first cross-linking member 11 on the second side 012 is in a round rod shape or a column shape with a flat surface. After it is inserted into the second through hole 121a of the second fixing screw 12, it can be pressed by the second plug 122. For the other structures and principles of the fixing screw, please refer to the prior art, and this embodiment will not be elaborated further.

[0089] Optionally, the outer contour of the second nail seat 121 of the second fixing screw 12 is larger than the inner contour of the connection port 110. The nail body 123 of the second fixing screw 12 is for passing through the connection port 110 and screwing and fixing on the spine, and the second nail seat 121 is then pressed on the recessed area of the first cross-linking member 11, so as to realize the fixation of the first cross-linking member 11 to the first side 011 of the spine. Preferably, the connection port 110 can be a through hole or a fork-shaped opening structure. This embodiment is not limited thereto, and preferably it is a fork-shaped opening structure, which is convenient for the installation of the second fixing screw 12.

[0090] Please refer to Figure 9a and Figure 9b, Optionally, the second fixing screw 12 has a rotation limiting portion 124, and the rotation limiting portion 124 is snapped into the connection port 110, and the connection port 110 restricts the circumferential rotation of the rotation limiting portion 124. The profiles of the connection port 110 and the rotation limiting portion 124 should be configured to be non-circular, for example, they can be polygonal, square, oblate, elliptical or other regular or irregular shapes. After the rotation limiting portion 124 is snapped into the connection port 110, the circumferential rotation of the second fixing screw 12 relative to the first cross-linking member 11 is restricted, thereby preventing the rotation stress of the spine from damaging the fixing stability of the second fixing screw 12.

[0091] Please refer to Figures 11 to 15c , In another alternative exemplary embodiment, the transverse connection assembly 10 includes a second cross-linking member 14, two fastening assemblies 15, a fourth fixing screw 16, and a fifth fixing screw 17; the second cross-linking member 14 extends across the reference plane 01, and the second cross-linking member 14 has two first fastening holes 140, and the two first fastening holes 140 are distributed on both sides of the reference plane 01 respectively for the two fastening assemblies 15 to pass through; one end of the second cross-linking member 14 on the first side 011 is connected to the fourth fixing screw 16 through one of the fastening assemblies 15; one end of the second cross-linking member 14 on the second side 012 is connected to the fifth fixing screw 17 through the other fastening assembly 15; the fourth fixing screw 16 is used to be fixed on the predetermined object on the first side 011, and the fifth fixing screw 17 is used to be fixed on the predetermined object on the second side 012.

[0092] The second cross-linking member 14 is connected to the fourth fixing screw 16 and the fifth fixing screw 17 through the fastening assemblies 15, and the structural requirements for the fourth fixing screw 16 and the fifth fixing screw 17 are relatively low, that is, the fourth fixing screw 16 or the fifth fixing screw 17 does not need to be specially customized, and existing ordinary ball head screws can be selected, which simplifies the structure of the entire flexible orthopedic system and reduces the surgical cost.

[0093] Optionally, the locking component 15 includes a locking nut 151 and a third plug 152; the fourth fixing screw 16 and the fifth fixing screw 17 include a fourth screw seat 161; the fourth screw seat 161 has a fourth plug hole axially formed therein; a part of the third plug 152 is screwed into the fourth plug hole, and another part of the third plug 152 remains outside the fourth plug hole and passes through the first locking hole 140, and the locking nut 151 is threadedly connected to the part of the third plug 152 passing through the first locking hole 140 to lock the second cross-connecting member 14 to the fourth fixing screw 16 and the fifth fixing screw 17 respectively. The axial length of the third plug 152 is relatively long. After one end of it is screwed into the fourth plug hole, the other end can still protrude outside the fourth plug hole. Then, the second cross-connecting member 14 is placed on the fourth screw seat 161, and the first locking hole 140 is sleeved outside the protruding section of the third plug 152. At this time, the third plug 152 should be long enough to at least protrude outside the first locking hole 140. Finally, the locking nut 151 is sleeved on the protruding end of the third plug 152, and the locking nut 151 is tightened, so that the second cross-connecting member 14 can be locked to the fourth fixing screw 16 or the fifth fixing screw 17. It can be understood that in some embodiments, the outer diameter of the locking nut 151 is greater than the aperture of the first locking hole 140; in other embodiments, the locking nut 151 can also be locked on the first locking hole 140 through an additional gasket, and the present invention is not limited thereto.

[0094] Further, in the fourth fixing screw 16, the fourth screw seat 161 further has a fourth through hole 161b formed radially therein, and the fourth through hole 161b is used for the flexible connecting body 20 to pass through. The fourth through hole 161b is communicated with the fourth plug hole, and the third plug 152 screwed into the fourth plug hole is used to fix the flexible connecting body 20. For the fourth fixing screw 16, in addition to being used for assembling and connecting with the second cross-connecting member 14, it also needs to be connected to the flexible connecting body 20 and further fix the flexible connecting body 20. Therefore, the fourth screw seat 161 of the fourth fixing screw 16 is also provided with a fourth through hole 161b. After the flexible connecting body 20 passes through the fourth through hole 161b, it can be pressed in the fourth through hole 161b by screwing in the third plug 152. It can be understood that in order to simplify the specifications and quantities of consumables during the operation, the fourth screw seat 161 of the fifth fixing screw 17 can also have a fourth through hole 161b formed radially therein. Thus, the fifth fixing screw 17 can actually use the same type of ball head screw as the intermediate limiting screw 51, the first turning screw 40, and the second turning screw 52, and only the fourth through hole 161b of the fifth fixing screw 17 is left empty during use.

[0095] Please refer to Figures 14 to 15c, Optionally, the transverse connection component 10 further includes a sliding adjustment member 18; the sliding adjustment member 18 is movably connected to the second transverse connecting member 14 along the extending direction of the second transverse connecting member 14; the sliding adjustment member 18 has a second set screw hole 180 for the third set screw 152 to pass through; within the moving stroke of the sliding adjustment member 18 along the second transverse connecting member 14, the third set screw 152 can pass through the first set screw hole 140 and the second set screw hole 180 simultaneously. The purpose of setting the sliding adjustment member 18 is to allow the second transverse connecting member 14 to be finely adjusted relative to the positions of the fourth fixing screw 16 and the fifth fixing screw 17 during the operation to adapt to various different surgical scenarios. It should be noted that the extending direction of the second transverse connecting member 14 is generally perpendicular to the reference plane 01, but it is not limited to being perpendicular to the reference plane 01 and can form a certain angle with the reference plane 01. For example, in Figure 15b the exemplary embodiment shown, the second transverse connecting member 14 is bent relatively on both sides of the reference plane 01, and the extending directions of the second transverse connecting member 14 on both sides of the reference plane 01 form an angle of 50° to 70° with the reference plane 01. Of course, in some other embodiments, those skilled in the art can also select the second transverse connecting member 14 with other suitable shapes according to the actual situation of the patient, and the present invention is not limited thereto.

[0096] Further, in an exemplary embodiment, the sliding adjustment member 18 is generally C-shaped, and the inner sides of the two wings of its C-shape have protrusions 181. Correspondingly, both sides of the second transverse connecting member 14 are provided with sliding grooves 141 arranged along its own extending direction. The sliding adjustment member 18 is clamped in the sliding grooves 141 of the second transverse connecting member 14 through the protrusions 181, so as to limit the sliding adjustment member 18 to move only along the extending direction of the second transverse connecting member 14 without coming off. Since within the moving stroke of the sliding adjustment member 18 along the second transverse connecting member 14, the third set screw 152 can pass through the first set screw hole 140 and the second set screw hole 180 simultaneously, the position of the second transverse connecting member 14 relative to the third set screw 152 can be adjusted by moving the sliding adjustment member 18, thereby realizing the adjustment of the position of the second transverse connecting member 14 relative to the fourth fixing screw 16 or the fifth fixing screw 17.

[0097] In an alternative exemplary embodiment, the first set screw hole 140 is an elongated hole (such as an oblong hole, etc.), and its major axis is arranged along the extending direction of the second transverse connecting member 14; the second set screw hole 180 is adapted to the third plug 152. It should be noted that the second set screw hole 180 being adapted to the third plug 152 means that the inner diameter of the second set screw hole 180 is slightly larger than the outer diameter of the third plug 152, such that the third plug 152 can pass through the second set screw hole 180 but is restricted from radial movement by the second set screw hole 180. It can be understood that since the third plug 152 can pass through the first set screw hole 140, the minor axis length of the first set screw hole 140 is not less than the outer diameter of the third plug 152. With such a configuration, when the sliding adjustment member 18 moves along the extending direction of the second transverse connecting member 14, it will drive the third plug 152 to move along the major axis direction within the first set screw hole 140, thereby adjusting the position of the second transverse connecting member 14 relative to the third plug 152. It should be understood that the sliding adjustment member 18 is only used to adjust the position of the second transverse connecting member 14 relative to the fourth fixing screw 16 or the fifth fixing screw 17 during the operation to facilitate the surgical operation. After the sliding adjustment member 18 is adjusted to a suitable position during the operation and the lock nut 151 is tightened and locked, the position of the sliding adjustment member 18 relative to the second transverse connecting member 14 is relatively fixed.

[0098] Please refer to Figure 1 and Figure 2 , in an alternative exemplary embodiment, the flexible orthopedic system includes: two of the first fixing screws 30, two of the first turning screws 40, and two of the flexible connecting bodies 20; the two first fixing screws 30 are longitudinally distributed on both sides of the transverse connecting assembly 10 ( Figure 2on the upper and lower sides thereof); the two first bent screws 40 are longitudinally distributed on both sides of the transverse connection assembly 10; one end of each of the two flexible connectors 20 is connected to a part of the same transverse connection assembly 10 located on the first side 011; after the other ends of the two flexible connectors 20 change their extending directions through different ones of the two first bent screws 40 respectively, they are connected to different ones of the two first fixing screws 30. In some application scenarios, the scoliosis segment of the spine is relatively long, and the effect of only using one side of the transverse connection assembly 10 for flexible fixation is limited. A flexible fixation system with two sets of flexible connectors 20 can be respectively arranged on both longitudinal sides of the transverse connection assembly 10, which can disperse the pulling force of the transverse connection assembly 10 towards the longitudinal side, make the transverse connection assembly 10 be in balanced force in the longitudinal direction, and is beneficial to its stability. Further, transition screws 50 as described above can be respectively arranged on both longitudinal sides of the transverse connection assembly 10. In particular, the number of the intermediate limiting screws 51 on both longitudinal sides of the transverse connection assembly 10 can be the same or different, and this embodiment does not limit this. In practice, it can be selected according to different situations of the scoliosis segment of the spine. In some other embodiments, a continuous flexible connector 20 can also be selected to penetrate through the transverse connection assembly 10 to achieve flexible fixation of both longitudinal sides of the transverse connection assembly 10, and this embodiment also does not limit this. However, preferably, two separate flexible connectors 20 are respectively adopted on both longitudinal sides of the transverse connection assembly 10. On the one hand, it is beneficial to the installation during the operation. On the other hand, different pulling forces can be applied to the flexible connectors 20 on both longitudinal sides of the transverse connection assembly 10 to adapt to various different actual requirements.

[0099] To accommodate two different flexible connectors 20, please refer to Figure 10a and Figure 10b and in combination with Figures 9a to 9c In an alternative exemplary embodiment, the second fixing screw 12 includes two of the second plugs 122. The second through holes 121a of the second fixing screw 12 are for the two flexible connectors 20 to pass through. The second screw base 121 has two of the second plug holes 121b, and the two second plug holes 121b overlap in the radial direction; at least one of the second plugs 122 has a circumferential notch 122a, and the circumferential notch 122a and the circumscribed circle 122b of the other second plug 122 (at Figure 10bis adapted to the second plug (shown in dashed lines), and the two second plugs 122 are used to be screwed into the two second plug holes 121b to respectively fix the two flexible connectors 20. It can be understood that the two second plugs 122 can be the same or different; the inner diameters of the two second plug holes 121b can be the same or different, and they are respectively adapted to the two second plugs 122. At least one second plug 122 has at least one circumferential notch 122a. During use, the second plug 122 with the circumferential notch 122a is first screwed into its corresponding second plug hole 121b. After being screwed to a predetermined depth to compress its corresponding flexible connector 20, the circumferential notch 122a is aligned with the center of the other second plug 122, and the screwing of the other second plug 122 is not hindered. The arrangement that the two second plug holes 121b overlap in the radial direction enables the two flexible connectors 20 to be closer to each other, which is beneficial to reducing the space volume of the second staple base 121 and reducing surgical trauma.

[0100] In Figure 10a and Figure 10b the exemplary embodiment shown, the two second plugs 122 are the same and each has 3 circumferential notches 122a. With such a configuration, on the one hand, it is beneficial to simplify the number of instruments during the operation and is also convenient for the operator to use, that is, there is no need to specifically distinguish different second plugs 122; on the other hand, the setting of the 3 circumferential notches 122a is beneficial to ensuring that after the second plug 122 is screwed to a predetermined depth, it only needs to be adjusted by at most ±30° to ensure that one circumferential notch 122a faces the other second plug 122; on the other hand, since both of the two second plugs 122 have circumferential notches 122a, the screwing order of the two second plugs 122 is not limited. After the two second plugs 122 are screwed in successively, by adjusting the angle of the later-screwed second plug 122 so that its circumferential notch 122a faces the previously-screwed second plug 122, the previously-screwed second plug 122 can be adjusted again, which facilitates the adjustment operation during the operation. Of course, in some other embodiments, the number of circumferential notches 122a on the second plug 122 is not limited to 3, and it can also be 1, 2 or more.

[0101] Please refer to Figure 11 and Figure 12, in another alternative exemplary embodiment, the fourth through hole 161b of the fourth fixing screw 16 is for two of the flexible connectors 20 to pass through. The fourth screw seat 161 has two of the fourth plug holes, and the two fourth plug holes overlap in the radial direction; correspondingly, the fastening assembly 15 includes two third plugs 152. The structures of the two third plugs 152 can be similar to the structures of the above two second plugs 122, that is, at least one of the third plugs 152 has a circumferential notch, so that the two third plugs 152 can be screwed into the two fourth plug holes that overlap in the radial direction. The specific structure and principle can refer to the above description of the second plug 122 and the second plug hole 121b, and will not be repeated here. Particularly, the axial lengths of the two third plugs 152 in the fastening assembly 15 are different. After one of the third plugs 152 is screwed into the fourth through hole 161b and compresses the corresponding flexible connector 20, its other end preferably does not protrude from the fourth through hole 161b. After the other third plug 152 is screwed into the fourth through hole 161b and compresses the corresponding flexible connector 20, its other end preferably protrudes from the fourth through hole 161b to facilitate the connection of the fastening nut 151.

[0102] Please refer to Figure 12 , preferably, the flexible orthopedic system further includes: a positioning member 70; the positioning member 70 is respectively connected to the first turning screw 40 and the second turning screw 52 to limit the relative positions of the first turning screw 40 and the second turning screw 52. The positioning member 70 is provided to limit the distance between the first turning screw 40 and the second turning screw 52. Since the two turning screws are connected by the flexible connector 20, there is a possibility that they may approach each other due to the tension of the flexible connector 20. In some application scenarios for patients where there is no need for a relative movement trend between the two turning screws, the positioning member 70 can be used to limit the positions of the first turning screw 40 and the second turning screw 52 to keep the two turning screws relatively fixed. The specific structure of the positioning member 70 in this embodiment is not particularly limited. In an exemplary embodiment, to simplify the number of consumables during surgery, the positioning member 70 can be a structural member identical to the aforementioned second cross member 14, and the first turning screw 40 and the second turning screw 52 can be structural members identical to the fifth fixing screw 17. Thus, the positioning member 70 can also be fixed to the first turning screw 40 and the second turning screw 52 through the corresponding fastening assembly 15. This embodiment will not be elaborated and repeated here, and those skilled in the art can refer to the corresponding descriptions of the above components such as the second cross member 14 and the fastening assembly 15.

[0103] Optionally, the flexible connector 20 can be a cable or other similar flexible structure. The flexible connector 20 preferably includes multiple strands of metal wire. The metal wire can be, for example, titanium alloy wire or other metal wires with good biocompatibility. The grade of the titanium alloy wire can be, for example, TI6AL4V ELI. Optionally, the minimum elongation rate of the titanium alloy wire is not less than 10%. Since the flexible connector 20 needs to have a certain tensile strength and flexibility, preferably, the number of strands of the flexible connector 20 is 7X7, 19x7, 7X19, 37x7, 7x37, 7X7+(8)1X19, 7X7X7, 19X19, etc. The overall outer diameter of the flexible connector 20 is between 3.0 mm and 6.5 mm, and the overall tensile strength of the flexible connector 20 is not less than 860 MPa.

[0104] Please refer to Figure 16a and Figure 16b , and in combination with reference to Figure 11 and Figure 12, preferably, the flexible orthopedic system further includes a limit joint 21, which is disposed at at least one end of the flexible connector 20; the limit joint 21 is used to limit the position of the flexible connector 20 relative to the first fixing screw 30 and / or the transverse connection assembly 10 along its axial direction. The setting of the limit joint 21 is used to provide additional supplementary limitation for the connection between the flexible connector 20 and the first fixing screw 30 or the transverse connection assembly 10. For the convenience of description below, one end of the flexible connector 20 connected to the transverse connection assembly 10 is called the first end, and one end of the flexible connector 20 connected to the first fixing screw 30 is called the second end. In a demonstration example, the limit joint 21 is disposed at the second end of the flexible connector 20. After the flexible connector 20 sequentially passes through the intermediate limit screw 51, the first turning screw 40, the second turning screw 52 and the first fixing screw 30, the second end of the flexible connector 20 preferably extends out of the radial through hole of the first fixing screw 30, and the limit joint 21 is disposed on the extended flexible connector 20. Optionally, the limit joint 21 can be a flat sleeve, which can be clamped on the flexible connector 20 with an appropriate tool, for example, it can be press-fitted and fixed by a hydraulic clamp. The radial dimension of the limit joint 21 is preferably larger than the radial through hole of the first fixing screw 30. After the limit joint 21 is connected to the flexible connector 20, when the flexible connector 20 moves in the direction towards the transverse connection assembly 10 until the limit joint 21 abuts against the first fixing screw 30, the flexible connector 20 is restricted from continuing to move towards the transverse connection assembly 10, thereby realizing additional supplementary limitation of the flexible connector 20 and the first fixing screw 30, and avoiding the flexible connector 20 from disengaging from the first fixing screw 30 due to the failure of the plug of the first fixing screw 30. On the other hand, the setting of the limit joint 21 can also simplify the surgical operation steps. Specifically, the limit joint 21 can be fixed to the second end of the flexible connector 20 during the preoperative preparation. During the operation, the first end of the flexible connector 20 is inserted from the first fixing screw 30 until it passes through the transverse connection assembly 10. The operator can directly pre-tighten the first end of the flexible connector 20, and at this time, it is not necessary to tighten the plug of the first fixing screw 30. After the flexible connector 20 is pre-tightened to a suitable position, the plug on the transverse connection assembly 10 can be tightened first, and then the plug of the first fixing screw 30 can be tightened to complete the assembly. Thus, it can be understood that the setting of the limit joint 21 can simplify the threading process of the flexible connector 20. Of course, in some other embodiments, the limit joint 21 can also be disposed at the first end of the flexible connector 20, or both ends of the flexible connector 20 can be provided at the same time, and the present invention is not limited thereto.

[0105] Preferably, the flexible orthopedic system further includes: a protective sleeve 60; the protective sleeve 60 is sleeved outside the exposed portion of the flexible connector 20. The protective sleeve 60 can be made of a polymer material, preferably a biocompatible polymer material, and has a certain elasticity without causing harm to human tissues. Since the flexible connector 20 is preferably a multi-strand metal wire, it has certain gaps. If not protected after implantation into the human body, it is easy for human tissues to grow into it. The function of the protective sleeve 60 is to prevent human tissues from growing into the flexible connector 20 and protect the flexible connector 20, so that the flexible connector 20 can still move after being implanted into the human body, thereby realizing flexible orthopedics. Optionally, the protective sleeve 60 is segmented and sleeved on the flexible connector 20 between adjacent screws.

[0106] In summary, the flexible orthopedic system provided by the present invention is used to be arranged on a strip-shaped predetermined object. The predetermined object is longitudinal along its own extension direction, and the predetermined object has a reference plane extending longitudinally; the two sides of the reference plane are the first side and the second side respectively; the flexible orthopedic system includes: a transverse connection assembly, a flexible connector, a first fixing screw, and a first turning screw; the transverse connection assembly is used to be fixed on the predetermined object across the reference plane; the first turning screw is used to be fixed on the predetermined object on the first side and is at a different longitudinal position from the transverse connection assembly; the first fixing screw is used to be fixed on the predetermined object on the second side; one end of the flexible connector is used to be connected to a part of the transverse connection assembly on the first side, and the other end of the flexible connector is used to cross the reference plane after changing the extension direction through the first turning screw and is connected to the first fixing screw. With such a configuration, the flexible connector is fixed on the predetermined object through the first fixing screw and the transverse connection assembly, and orthopedics is realized through the traction force of the flexible connector, which belongs to a flexible fixation. In particular, when the adolescent spine is configured as the predetermined object, it can adapt to the continuous growth adjustment of the adolescent spine to realize the orthopedics of the adolescent bones, can continue the external force of spinal orthopedics and allow the flexible growth of the spine after the operation, has less harm to bone development, and has a good spinal orthopedic effect. In addition, since the transverse connection assembly is directly fixed on the predetermined object, the surgical wound surface is small, which is beneficial to the recovery of the patient.

[0107] It should be noted that the above-mentioned several embodiments can be combined with each other. The above description is only a description of the preferred embodiments of the present invention, and does not limit the scope of the present invention in any way. Any changes and modifications made by those of ordinary skill in the field of the present invention according to the above disclosure belong to the protection scope of the claims.

Claims

1. A flexible orthopedic system for being disposed on a strip-shaped predetermined object, the predetermined object being longitudinal along its own extending direction, the predetermined object having a reference surface extending longitudinally; on both sides of the reference surface are a first side and a second side respectively; characterized in that, The flexible orthopedic system includes: a transverse connection assembly, a flexible connection body, a first fixing screw, and a first turning screw; the flexible connection body includes multiple strands of metal wire materials; The transverse connection assembly is used to be fixed on the predetermined object across the reference plane; The first turning screw is used to be fixed on the predetermined object on the first side and is located at a different longitudinal position from the transverse connection assembly; The first fixing screw is used to be fixed on the predetermined object on the second side; One end of the flexible connection body is used to be connected to a part of the transverse connection assembly on the first side, and the other end of the flexible connection body is used to cross the reference plane after changing the extension direction through the first turning screw and is connected to the first fixing screw.

2. The flexible orthopedic system according to claim 1, wherein The flexible orthopedic system includes: a transition screw; the transition screw includes an intermediate limit screw and / or a second turning screw; The intermediate limit screw is used to be fixed on the predetermined object on the first side; the intermediate limit screw is used to be arranged between the transverse connection assembly and the first turning screw; the flexible connection body is axially movably inserted through the intermediate limit screw, and the intermediate limit screw is used to limit the radial position of the flexible connection body; The second turning screw is used to be fixed on the predetermined object on the second side; the second turning screw is used to be arranged between the first turning screw and the first fixing screw, and the second turning screw is used to change the extension direction of the flexible connection body.

3. The flexible orthopedic system according to claim 2, wherein At least one of the intermediate limit screw, the first turning screw, and the second turning screw includes a first nail seat, a first plug, and a retaining clip; the first nail seat has a first through hole opened radially and a first plug hole opened axially; the first through hole is used for the flexible connection body to be movably inserted through, the first plug hole communicates with the first through hole, and the first plug is used to be screwed into the first plug hole; the retaining clip is connected to the screwing end of the first plug and is used to limit the screwing position of the first plug.

4. The flexible orthopedic system according to claim 3, wherein The retaining clip is rotatably connected to the first plug along the circumferential direction of the first plug and is restricted from moving axially relative to the first plug; the first nail seat has a clamping groove, and the retaining clip has an elastic clamping arm, and the clamping arm is used to be clamped into the clamping groove to limit the axial position of the retaining clip relative to the first nail seat.

5. The flexible orthopedic system according to claim 3, wherein The first through hole of the first turning screw and / or the second turning screw extends in a curved manner.

6. The flexible orthopedic system according to claim 2, wherein At least one of the intermediate limit screw, the first turning screw, and the second turning screw includes a third nail seat, and the third nail seat has a third through hole opened radially, and the third through hole is used for the flexible connection body to be movably inserted through.

7. The flexible orthopedic system according to claim 2, wherein The flexible orthopedic system further includes: a positioning member; the positioning member is respectively connected to the first turning screw and the second turning screw to limit the relative positions of the first turning screw and the second turning screw.

8. The flexible orthopedic system according to claim 1, characterized in that, The transverse connection assembly includes a first transverse connection member, a second fixing screw, and a third fixing screw; The first transverse connecting member extends across the reference plane. One end of the first transverse connecting member on the first side is recessed along the screwing-in direction of the second fixing screw. The first transverse connecting member has a connection port in the recessed area. The second fixing screw is used to pass through the connection port and fix to the predetermined object on the first side; One end of the first transverse connecting member on the second side is connected to the third fixing screw and is used to fix to the predetermined object on the second side.

9. The flexible orthopedic system according to claim 8, wherein The second fixing screw has a rotation-limiting portion. The rotation-limiting portion is snapped into the connection port, and the connection port restricts the circumferential rotation of the rotation-limiting portion.

10. The flexible orthopedic system according to claim 8, wherein, The first fixing screw, the second fixing screw, and the third fixing screw include a second nail seat and a second plug. The second nail seat has a second through hole opened radially and a second plug hole opened axially; the second through hole is used for the flexible connecting body or the first transverse connecting member to pass through, the second plug hole communicates with the second through hole, and the second plug is used to be screwed into the second plug hole to fix the flexible connecting body or the first transverse connecting member.

11. The flexible orthopedic system according to claim 10, wherein, The second fixing screw includes two second plugs. The second through hole of the second fixing screw is used for two flexible connecting bodies to pass through. The second nail seat has two second plug holes, and the two second plug holes overlap radially; at least one of the second plugs has a circumferential notch, and the circumferential notch is adapted to the circumscribed circle of the other second plug. The two second plugs are used to be screwed into the two second plug holes to respectively fix the two flexible connecting bodies.

12. The flexible orthopedic system according to claim 1, wherein, The transverse connection assembly includes a second transverse connecting member, two fastening assemblies, a fourth fixing screw, and a fifth fixing screw; The second transverse connecting member extends across the reference plane. The second transverse connecting member has two first fastening holes, and the two first fastening holes are distributed on both sides of the reference plane and are respectively used for the two fastening assemblies to pass through; One end of the second transverse connecting member on the first side is connected to the fourth fixing screw through one of the fastening assemblies; one end of the second transverse connecting member on the second side is connected to the fifth fixing screw through the other fastening assembly; The fourth fixing screw is used to fix to the predetermined object on the first side, and the fifth fixing screw is used to fix to the predetermined object on the second side.

13. The flexible orthopedic system according to claim 12, characterized in that, The fastening assembly includes a fastening nut and a third plug; the fourth fixing screw and the fifth fixing screw include a fourth nail seat; the fourth nail seat has a fourth plug hole opened axially; a part of the third plug is used to be screwed into the fourth plug hole, and the other part of the third plug remains outside the fourth plug hole and passes through the first fastening hole. The fastening nut is threadedly connected to the part of the third plug passing through the first fastening hole to fasten the second transverse connecting member to the fourth fixing screw and the fifth fixing screw respectively.

14. The flexible orthopedic system according to claim 13, wherein, In the fourth fixing screw, the fourth nail seat further has a fourth through hole opened radially, and the fourth through hole is used for the flexible connecting body to pass through. The fourth through hole communicates with the fourth plug hole, and the third plug screwed into the fourth plug hole is used to fix the flexible connecting body.

15. The flexible orthopedic system according to claim 13, wherein, The transverse connection assembly further includes a sliding adjustment member; the sliding adjustment member is movably connected to the second transverse connecting member along the extending direction of the second transverse connecting member; the sliding adjustment member has a second set screw hole for the third plug to pass through; Within the moving stroke of the sliding adjustment member along the second transverse connecting member, the third plug can pass through the first set screw hole and the second set screw hole simultaneously.

16. The flexible orthopedic system according to claim 15, wherein, The first set screw hole is an oblong hole, and its long axis is arranged along the extending direction of the second transverse connecting member; the second set screw hole is adapted to the third plug.

17. The flexible orthopedic system according to claim 1, wherein The flexible orthopedic system further includes a limiting joint, and the limiting joint is arranged at at least one end of the flexible connecting body; the limiting joint is used to limit the position of the flexible connecting body relative to the first fixing screw and / or the transverse connection assembly along its axial direction.

18. The flexible orthopedic system according to any one of claims 1 to 17, characterized in that, The flexible orthopedic system includes: two of the first fixing screws, two of the first turning screws, and two of the flexible connecting bodies; The two first fixing screws are longitudinally distributed on both sides of the transverse connection assembly; The two first turning screws are longitudinally distributed on both sides of the transverse connection assembly; One ends of the two flexible connecting bodies are connected to a part of the same transverse connection assembly on the first side; after the other ends of the two flexible connecting bodies change their extending directions through different two first turning screws respectively, they are connected to different two first fixing screws.

19. The flexible orthopedic system according to any one of claims 1 to 17, characterized in that The flexible orthopedic system further includes: a protective sleeve; the protective sleeve is sleeved outside the exposed part of the flexible connecting body.

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