CN217472043U - Flexible orthopedic system - Google Patents

Abstract

The utility model provides a flexible orthopedic system, which is used for being arranged on a strip-shaped preset object, the preset object is longitudinal along the extending direction of the preset object, and the preset object is provided with a reference surface extending along the longitudinal direction; the two sides of the reference surface are respectively a first side and a second side; a flexible orthopedic system comprising: the device comprises a transverse connecting component, a flexible connecting body, a first fixing screw and a first turning screw; the transverse connecting assembly is used for being fixed on a predetermined object across the reference surface; the first turning screw is used for being fixed on a predetermined object on the first side and is positioned on a different longitudinal position from the transverse connecting assembly; the first fixing screw is used for fixing on a predetermined object on the second side; one end of the flexible connecting body is used for being connected with the part, located on the first side, of the transverse connecting assembly, and the other end of the flexible connecting body is used for crossing the reference surface after the extending direction of the flexible connecting body is changed through the first turning screw and is connected with the first fixing screw.

Description

Flexible orthopedic system

Technical Field

The utility model relates to the technical field of medical equipment, in particular to flexible orthopedic system.

Background

Abnormal development of the spine can cause deformity such as scoliosis and lateral kyphosis, and the deformity is continuously aggravated along with growth, so that serious trunk deformity is caused, and the physical and mental health of a patient is seriously affected. With the deep understanding of scoliosis three-dimensional deformity, the development of spinal internal fixation technology and the development of spinal osteotomy technology, for patients in the development and mature period, a pedicle screw-rod correction system is adopted, so that the effect is satisfactory, but for children and adolescent scoliosis which are immature in development and still have larger growth potential, the traditional treatment method comprises braces, growth guiding technology (comprising traditional growth rods and magnetic control growth rods), direct fusion and the like, but more difficulties and problems exist, the treatment effect is poor, and postoperative scoliosis relapse, aggravation and the like occur before the growth and development of the patients are finished, and the problem still exists in the field of spinal surgery.

In the case of a growing spine, it is therapeutically important not only to correct the deformity, but also to maintain the growth of the spine. At present, the contradiction and difficulty between deformity correction and continuous growth are basically not solved aiming at the deformity correction instruments with larger growth potential, such as scoliosis, lateral kyphosis and the like of children and teenagers. The rigid pedicle screw-rod system can achieve the correction of the rigidity of the spine, and has the defects that the flexibility and the growth potential of the spine are limited, the normal growth of the spine is influenced, and the growth of the spine can generate a crankshaft phenomenon, so that the deformity is recurrent and aggravated. A small number of products such as growth valves, growth rods, magnetic control growth rods and the like exist in the market, the growth of the spine of a patient and the maintenance of the shape correction are hopefully met by the continuous in-vivo and in-vitro opening after the first correction, but most of the products are developed, recurred and aggravated because the correction force is concentrated on the upper end and the lower end of the shape correction, the deformed region of the spine, and particularly the top vertebra cannot be controlled; growth of the spine does not occur axially along a rigid system; some systems can not be propped open after being propped open for 1-2 times after operation, and the like, so that a satisfactory correction effect is often difficult to obtain.

How to effectively solve the contradiction between spinal correction and continuous growth of the spine, and correcting the scoliosis of infants and young people is always a problem actively explored and solved by the technicians in the field at home and abroad.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a flexible orthopedic system to solve the problem that current spinal orthopedic system is difficult to gain satisfied correction effect.

In order to solve the above technical problem, the present invention provides a flexible orthopedic system, which is configured to be disposed on a strip-shaped predetermined object, wherein the predetermined object is longitudinal along a direction of extension of the predetermined object, and the predetermined object has a reference surface extending along the longitudinal direction; the two sides of the reference surface are respectively a first side and a second side; wherein the flexible orthotic system comprises: the transverse connecting assembly, the flexible connecting body, the first fixing screw and the first turning screw are arranged on the base;

the transverse connecting assembly is used for being fixed on the predetermined object across the reference surface;

the first turning screw is used for being fixed on the predetermined object on the first side and is located at a different longitudinal position from the transverse connecting component;

the first fixing screw is used for fixing on the predetermined object on the second side;

one end of the flexible connecting body is used for being connected with the part, located on the first side, of the transverse connecting assembly, and the other end of the flexible connecting body is used for striding over the reference surface after the extending direction of the first turning screw is changed and is connected with the first fixing screw.

Optionally, the flexible orthotic system comprises: a transition screw; the transition screw comprises a middle limiting screw and/or a second turning screw;

the middle limiting screw is used for being fixed on the preset object on the first side; the middle limiting screw is used for being arranged between the transverse connecting assembly and the first turning screw; the middle limiting screw is used for the flexible connecting body to movably penetrate through along the axial direction, and the middle limiting screw is used for limiting the radial position of the flexible connecting body;

the second turning screw is used for being fixed on the predetermined object on the second side; the second turning screw is used for being arranged between the first turning screw and the first fixing screw, and the second turning screw is used for changing the extending direction of the flexible connecting body.

Optionally, in the flexible orthopedic system, at least one of the middle limit screw, the first corner screw and the second corner screw includes a first nail seat, a first screw plug and a backstop clamp, and the first nail seat has a first through hole formed in a radial direction and a first screw plug hole formed in an axial direction; the first through hole is used for the flexible connector to movably penetrate through, the first plug screw hole is communicated with the first through hole, and the first plug screw is used for screwing in the first plug screw hole; the stopping hoop is connected with the screwing-in end of the first plug screw and used for limiting the screwing-in position of the first plug screw.

Optionally, in the flexible orthopedic system, the retaining clip is rotatably connected to the first plug in a circumferential direction of the first plug and is limited in axial position relative to the first plug; first nail seat has the block groove, the stopping clamp has elastic block arm, the block arm is used for the card to go into the block groove, so that the restriction the stopping clamp for the axial position of first nail seat.

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

Optionally, in the flexible orthopedic system, at least one of the middle limiting screw, the first turning screw and the second turning screw includes a third screw seat, the third screw seat has a third through hole formed along a radial direction, and the third through hole is used for allowing the flexible connector to movably pass through.

Optionally, the flexible orthopedic system further comprises: a positioning member; the positioning piece is connected with the first turning screw and the second turning screw respectively so as to limit the relative positions of the first turning screw and the second turning screw.

Optionally, in the flexible orthopedic system, the transverse connection assembly includes a first transverse connection member, a second set screw, and a third set screw;

the first cross piece extends across the reference surface, one end of the first cross piece on the first side is recessed along the screwing-in direction of the second fixing screw, the first cross piece is provided with a connecting port in the recessed area, and the second fixing screw is used for being fixed on the predetermined object on the first side through the connecting port;

one end of the first cross connecting piece on the second side is connected with the third fixing screw and is used for being fixed on the predetermined object on the second side.

Optionally, in the flexible orthopedic system, the second fixing screw has a rotation limiting portion, the rotation limiting portion is snapped into the connection port, and the connection port limits circumferential rotation of the rotation limiting portion.

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 screw, and the second nail seat has a second through hole formed in the radial direction and a second plug screw hole formed in the axial direction; the second through hole is used for allowing a flexible connector or the first cross connecting piece to penetrate through, the second plug screw hole is communicated with the second through hole, and the second plug screw is used for screwing in the second plug screw hole to fix the flexible connector or the first cross connecting piece.

Optionally, in the flexible orthopedic system, the second fixing screw includes two second screw plugs, the second through hole of the second fixing screw is used for two flexible connectors to pass through, the second nail seat has two second screw plug holes, and the two second screw plug holes overlap in a radial direction; at least one second plug screw has a circumference breach, the circumference breach with another the circumscribed circle looks adaptation of second plug screw, two the second plug screw is used for screwing in two the second plug screw hole is in order to fix two respectively flexible connector.

Optionally, in the flexible orthopedic system, the transverse connecting assembly includes a second transverse connecting member, two tightening assemblies, a fourth fixing screw and a fifth fixing screw;

the second transverse connecting piece stretches across the reference surface, the second transverse connecting piece is provided with two first fastening holes, and the two first fastening holes are distributed on two sides of the reference surface and are respectively used for the two fastening assemblies to penetrate through;

one end of the second transverse connecting piece on the first side is connected with the fourth fixing screw through the fastening component; one end of the second transverse connecting piece on the second side is connected with the fifth fixing screw through the other fastening assembly;

the fourth fixing screw is used for fixing on the predetermined object on the first side, and the fifth fixing screw is used for fixing on the predetermined object on the second side.

Optionally, in the flexible orthopedic system, the tightening assembly includes a tightening nut and a third plug; the fourth and fifth set screws comprise a fourth nail seat; the fourth nail seat is provided with a fourth screw hole which is arranged along the axial direction; one part of the third plug screw is used for being screwed into the fourth plug screw hole, the other part of the third plug screw is reserved outside the fourth plug screw hole and penetrates through the first fastening hole, and the fastening nut is in threaded connection with the part of the third plug screw penetrating through the first fastening hole so as to fasten the second cross connecting piece with the fourth fixing screw and the fifth fixing screw respectively.

Optionally, in the flexible orthopedic system, in the fourth fixing screw, the fourth nail seat further has a fourth through hole formed in the radial direction, the fourth through hole is used for allowing a flexible connector to pass through, the fourth through hole is communicated with the fourth plug screw hole, and the third plug screw screwed into the fourth plug screw hole is used to fix the flexible connector.

Optionally, in the flexible orthopedic system, the transverse connecting assembly further comprises a sliding adjustment member; the sliding adjusting piece is movably connected with the second transverse connecting piece along the extending direction of the second transverse connecting piece; the sliding adjusting piece is provided with a second fastening hole for the third plug screw to penetrate through; in the moving stroke of the sliding adjusting piece along the second transverse connecting piece, the third screw plug can simultaneously pass through the first fastening hole and the second fastening hole.

Optionally, in the flexible orthopedic system, the first fastening hole is an elongated hole, and a long axis of the elongated hole is arranged along the extending direction of the second transverse connecting piece; the second fastening hole is matched with the third plug screw.

Optionally, the flexible orthopedic system further comprises a spacing joint, the spacing joint being disposed at least one end of the flexible connector; the limiting joint is used for limiting the position of the flexible connecting body relative to the first fixing screw and/or the transverse connecting assembly along the axial direction of the flexible connecting body.

Optionally, the flexible orthotic system comprises: the two first fixing screws, the two first turning screws and the two flexible connecting bodies;

the two first fixing screws are distributed on two sides of the transverse connecting component along the longitudinal direction;

the two first turning screws are longitudinally distributed on two sides of the transverse connecting component;

one end of each flexible connecting body is connected with the part of the same transverse connecting assembly positioned on the first side; the other ends of the two flexible connectors are respectively connected with the two different first fixing screws after the extending directions of the two different first turning screws are changed.

Optionally, the flexible orthopedic system further comprises: a protective sleeve; the protective sleeve is sleeved outside the exposed part of the flexible connecting body.

In summary, the present invention provides a flexible orthopedic system for being disposed on a strip-shaped predetermined object, wherein the predetermined object is longitudinal along a direction of extension thereof, and the predetermined object has a reference surface extending along the longitudinal direction; the two sides of the reference surface are respectively a first side and a second side; the flexible orthopedic system includes: the transverse connecting assembly, the flexible connecting body, the first fixing screw and the first turning screw are arranged on the base; the transverse connecting assembly is used for being fixed on the predetermined object across the reference surface; the first turning screw is used for being fixed on the predetermined object on the first side and is located at a different longitudinal position from the transverse connecting component; the first fixing screw is used for being fixed on the predetermined object on the second side; one end of the flexible connecting body is used for being connected with the part, located on the first side, of the transverse connecting assembly, and the other end of the flexible connecting body is used for crossing the reference surface after the extending direction of the first turning screw is changed and is connected with the first fixing screw.

The flexible connecting body is fixed on a preset object through the first fixing screw and the transverse connecting assembly, and correction is achieved through traction force of the flexible connecting body, the flexible fixing device belongs to flexible fixing, particularly, when a teenager spine is configured into the preset object, the flexible fixing device can adapt to continuous growth regulation of the teenager spine to achieve correction of teenager skeleton, spine correction external force can be continued after operation, the flexible growth of the spine is allowed, damage to skeleton development is small, and spine correction effect is good. In addition, because the transverse connecting component is directly fixed on the preset object, the surgical wound is small, and the recovery of a patient is facilitated.

Drawings

Those skilled in the art will appreciate that the drawings are provided for a better understanding of the invention and do not constitute any limitation on the scope of the invention. Wherein:

fig. 1 is a perspective view of a flexible orthotic system according to an embodiment of the present invention;

fig. 2 is a top view of a flexible orthotic system according to an embodiment of the present invention;

fig. 3 is a schematic view of a transition screw according to an embodiment of the present invention;

FIG. 4 is a schematic view of a transition screw of an embodiment of the present invention mated with a flexible connector;

fig. 5a is a perspective view of the first nail seat and the retaining clip according to the embodiment of the present invention after assembly;

fig. 5b is a top view of the first nail seat and the retaining clip according to the embodiment of the present invention after being disassembled;

fig. 5c is an axial cross-sectional view of the first nail seat and the retaining clip according to the embodiment of the present invention after being disassembled;

fig. 6a is a top view of a second turn screw of an embodiment of the present invention, wherein the first plug and the backstop clamp are not shown;

FIG. 6b is a side view of a second turn screw of an embodiment of the present invention, wherein the first plug and the backstop clamp are not shown;

figure 7a is a top view of a first cross-member of an embodiment of the present invention;

fig. 7b is a side view of a first cross member according to an embodiment of the present invention;

fig. 8 is a schematic view of a set screw according to an embodiment of the present invention;

fig. 9a is a side view of a second set screw according to an embodiment of the invention, wherein the second plug screw is not screwed in;

FIG. 9b is an axial cross-sectional view of a second set screw in accordance with an embodiment of the present invention, wherein the second plug has been screwed in;

fig. 9c is a top view of a second set screw of an embodiment of the present invention, wherein the second plug screw has been screwed in;

fig. 10a is a perspective view of a second plug screw according to an embodiment of the present invention;

fig. 10b is a top view of a second plug screw according to an embodiment of the invention;

FIG. 11 is a perspective view of another example flexible orthotic system, which does not include a spacer, in accordance with an embodiment of the present invention;

fig. 12 is a perspective view of another example flexible orthotic system according to an embodiment of the present invention, including a spacer;

fig. 13a and 13b are schematic views of a transition screw of another example of an embodiment of the present invention;

fig. 14 is a schematic view of the second cross member, the tightening unit and the fifth fixing screw of the embodiment of the present invention after assembled and combined;

fig. 15a is a schematic view of the second cross member of the embodiment of the present invention assembled and combined with the slide adjusting member;

figure 15b is a schematic view of a second cross-member of an embodiment of the present invention;

figure 15c is a schematic view of a slide adjust of an embodiment of the present invention;

figure 15d is a bottom view of the slide adjuster of an embodiment of the present invention;

figure 16a is a schematic view of a spacing joint according to an embodiment of the present invention;

fig. 16b is an axial cross-sectional view of a spacing joint in accordance with an embodiment of the present invention.

In the drawings:

01-a reference plane; 011-first side; 012-a second side;

10-a transverse connection assembly; 11-a first cross-link; 110-connection port; 12-a second set screw; 121-a second nail seat; 121 a-a second through hole; 121 b-a second plug hole; 122-a second plug screw; 122 a-circumferential notch; 122 b-circumscribed circle; 123-nail body; 124-rotation limiting part; 13-a third set screw; 14-a second cross-piece; 140-a first fastening hole; 141-a chute; 15-a tightening assembly; 151-fastening nuts; 152-a third plug screw; 16-a fourth set screw; 161-a fourth nail seat; 161 b-a fourth perforation; 17-a fifth set screw; 18-a slip adjuster; 180-a second fastening hole; 181-boss; 20-a flexible linker; 21-a limit joint; 30-a first set screw; 40-a first corner screw; 50-a transition screw; 501-a first nail seat; 501 a-a first through hole; 501 b-a first plug hole; 501 c-a clamping groove; 502-a first plug screw; 502 a-a clamp groove; 503-stopping hoop; 503 a-a snap arm; 503 b-snap ring; 504-nail body; 505-a third nail seat; 505 a-a third through hole; 505 b-a third plug hole; 505c — tool operational face; 51-middle limit screw; 52-second corner screw; 60-protective sleeve; 70-positioning piece.

Detailed Description

To make the objects, advantages and features of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments. It is to be noted that the drawings are in simplified form and are not to scale, but rather are provided for the purpose of facilitating and distinctly claiming the embodiments of the present invention. Further, the structures illustrated in the drawings are often part of actual structures. In particular, the drawings may have different emphasis points and may sometimes be scaled differently.

As used in this application, the singular forms "a," "an," and "the" include plural referents, the term "or" is generally employed in a sense including "and/or," the terms "a number of" are generally employed in a sense including "at least one," the terms "at least two" are generally employed in a sense including "two or more," and moreover, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to imply that the number of technical features indicated are present. Thus, a feature defined as "first," "second," or "third" may explicitly or implicitly include one or at least two of that feature, "one end" and "the other end" and "proximal end" and "distal end" generally refer to the corresponding two parts, including not only the endpoints. Furthermore, as used in the present application, the terms "mounted," "connected," and "disposed" on another element should be construed broadly, and generally only mean that there is a connection, coupling, fit, or drive relationship between the two elements, and that the connection, coupling, fit, or drive between the two elements can be direct or indirect through intervening elements, and should not be construed as indicating or implying any spatial relationship between the two elements, i.e., an element can be located in any orientation within, outside, above, below, or to one side of another element unless the content clearly dictates otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art. Moreover, directional terminology, such as above, below, up, down, upward, downward, left, right, etc., is used with respect to the exemplary embodiments as they are shown in the figures, with the upward or upward direction being toward the top of the corresponding figure and the downward or downward direction being toward the bottom of the corresponding figure.

An object of the utility model is to provide a flexible orthopedic system to solve the problem that current spinal orthopedic system is difficult to gain satisfied correction effect. The non-fusion growth rod technology is the more ideal method of present treatment EOS, the utility model discloses a design theory is through an elastic, non-fusion flexible system, when obtaining deformity through the operation for the first time and totally or partially correct, in the growth process of backbone, has the effect of satisfying the backbone growth needs adjustably or the gradual self-correction of partial deformity in the growth process of backbone, and this system satisfies "tension band" mechanism, has kept backbone activity function, can avoid or alleviate the emergence of bent axle phenomenon.

The following description refers to the accompanying drawings.

The inventor researches to find that in the existing spinal orthopedic system, the rigid fixation scheme has stronger link rigidity, but can limit the flexibility and growth potential of the spine, and is not suitable for some adolescents in growth and development. On one hand, the flexible fixing scheme needs to find a reliable fixing point, and therefore a large operation wound surface is often caused, and recovery of a patient is not facilitated. On the other hand, as the orthopedic operation is performed, the tissue may need to be cut for a second operation to adjust the tension, which causes more trauma, risks and economic stress to the patient.

Referring to fig. 1 and 2, based on the above research, the present invention provides a flexible orthopedic system for being disposed on a predetermined strip-shaped object, the predetermined object being longitudinal along its extending direction, the "strip" refers to a shape having a longitudinal dimension much larger than a transverse dimension, for example, a ratio of the longitudinal dimension to the transverse dimension is larger than 2. The predetermined object has a reference surface 01 extending in a longitudinal direction; the reference plane 01 is flanked by a first side 011 and a second side 012. Optionally, the predetermined object includes a lateral bending section convexly curved toward the first side 011.

The present embodiment is explained taking the spine as an example of a predetermined object. It should be noted that the spine is only an example of the predetermined object, and is not a limitation of the predetermined object. Under some other application scenarios, can also regard backbone model, animal etc. as predetermined object, utilize the flexible orthopedic system that this embodiment provided to carry out operations such as simulation operation or application of force mark to it, the utility model discloses it is not limited to this. In general, the spine has normal physiological curvature, which is along the sagittal plane of the human body. The flexible orthopedic system provided by the present embodiment is primarily suitable for use with a spine having lateral curvature, i.e., a lateral curvature along the coronal plane in addition to a normal physiological curvature along the sagittal plane. In this embodiment, the reference plane 01 can be understood with reference to the sagittal plane approximately, and for a normal human spine, the reference plane 01 and the sagittal plane coincide. However, for a patient with lateral curvature of the spine, the reference plane 01 does not refer to a plane that is completely coincident with its sagittal plane, but rather to the mid-spinal plane that extends in curvature along the spinal axis of the lateral curvature. The first side 011 and the second side 012 on both sides of the reference plane 01 can be understood as the left side and the right side of the human body on the sagittal plane, respectively (of course, the left side and the right side can be oppositely arranged). For the application scenario with spine model, animal, etc. as the predetermined object, the reference plane 01 and the first side 011 and the second side 012 thereof can be correspondingly defined, and the present invention is not explained again. Further, the spine includes a lateral bending section convexly curved toward the first side 011, and is not limited to the spine including only a single lateral bending section, and some patients may have an S-shaped curved spine, and it is understood that the convex bending directions of the upper and lower segments of the spine are different, so that the predetermined object of the spine including the lateral bending sections convexly curved toward the first side 011 is opposite to the first side 011 and the second side 012. Referring now to fig. 1 and 2, which are exemplary illustrations of a convexly curved spine toward the left, fig. 1 and 2 show a spine that includes only one lateral curvature segment that is convexly curved toward the left in fig. 1 and 2. In fig. 2, a reference plane 01 is an arc surface perpendicular to the paper surface, the left side of the reference plane 01 is a first side 011, and the right side of the reference plane 01 is a second side 012. In the context of application to other spines or spine models, the reference plane 01, the first side 011 and the second side 012 can be understood and substituted by those skilled in the art from the above description.

The flexible orthopedic system includes: a lateral connection assembly 10, a flexible connection body 20, a first set screw 30 and a first corner screw 40; the transverse connection assembly 10 is used for fixing the predetermined object across the reference surface 01, and the transverse connection assembly transversely crosses the reference surface 01 through the first side 011 and the second side 012; the first turning screw 40 is used for being fixed on the predetermined object on the first side 011 and is located at a different longitudinal position from the transverse connecting component 10; the first fixing screw 30 is used for fixing to the predetermined object on the second side 012; one end of the flexible connecting body 20 is used for connecting with the part of the transverse connecting component 10, which is positioned on the first side 011, and the other end of the flexible connecting body 20 is used for crossing over the reference surface 01 after the extending direction is changed through the first turning screw 40 and is connected with the first fixing screw 30. With such a configuration, the flexible connecting body 20 is fixed on a predetermined object through the first fixing screw 30 and the transverse connecting assembly 10, and the correction is realized through the traction force of the flexible connecting body 20, which belongs to a flexible fixing, in particular, when a vertebral column of a teenager is configured as the predetermined object, the vertebral body spacing of the vertebral column is increased along with the growth of the vertebral column, so that the distance between the transverse connecting assembly 10 and the first fixing screw 30 is increased, the flexible connecting body 20 is pulled, a force opposite to the convex bending direction of a lateral bending section can be applied to the vertebral column, so that one side of the deformity is pulled, and one side of the deformity is gradually corrected. Therefore, the flexible correcting system can adapt to continuous growth regulation of the teenager spine to realize correction of teenager skeletons, can continue spine correcting external force after operation and allow flexible growth of the spine, has small damage to skeleton development and good spine correcting effect, does not need secondary operation to adjust tension after implantation, and can be taken out through operation until correction is completed. Further, since the transverse connection assembly 10 is fixed to the spine across the reference plane 01, it can serve as a reliable fixed pivot point without moving or bending under the tension of the flexible connection body 20. While the flexible orthopedic device applies force through the flexible connecting body 20, the flexibility of the spine is not limited, and the limitation to the patient is small. In addition, because the transverse connecting component 10 is directly fixed on a predetermined object, the surgical wound only relates to a spinal column segment, and the wound is small, thereby being beneficial to the recovery of a patient. Of course, the flexible orthopedic system provided in this embodiment is not limited to be applied to the spine of a teenager, and may also be applied to orthopedic treatment of a scoliosis spine of a part of adults, or to operations such as simulated surgical training or evaluation on a spine model.

Preferably, the flexible orthotic system comprises: a transition screw 50; the transition screw 50 comprises a middle limit screw 51 and/or a second turning screw 52; the middle limit screw 51 is used for being fixed on the predetermined object on the first side 011; the middle limiting screw 51 is used for being arranged between the transverse connecting component 10 and the first turning screw 40, namely between the transverse connecting component 10 and the first turning screw 40 along the extending direction of the flexible connecting body 20; the middle limit screw 51 is used for the flexible connector 20 to movably penetrate through along the axial direction, and the middle limit screw 51 is used for limiting the radial position of the flexible connector 20; the second corner screw 52 is used for being fixed on the predetermined object on the second side 012 and is located at the same longitudinal position as the first corner screw 40; the second corner screw 52 is used to be disposed between the first corner screw 40 and the first fixing screw 30, i.e. between the first corner screw 40 and the first fixing screw 30 along the extending direction of the flexible connecting body 20, and the second corner screw 52 is used to change the extending direction of the flexible connecting body 20. Here, the first and second corner screws 40 and 52 are located at the same longitudinal position, which means that they are substantially symmetrical with respect to the reference plane 01. Where the lateral curvature of the spine is short, the transition screw 50 may not be provided. However, when the lateral curvature of the spine is long, the middle stop screw 51 and the second curve screw 52 can be arranged to extend the flexible connector 20 along the lateral curvature of the spine, thereby improving the force application effect and the orthopedic effect of the flexible connector 20. It should be noted that the number of the middle limit screws 51 is not limited in this embodiment, and can be adaptively set according to the length of the lateral bending section of the spinal column.

Referring to fig. 3 to 5c, in an alternative example, at least one of the middle limiting screw 51, the first turning screw 40 and the second turning screw 52 includes a first screw seat 501, a first screw plug 502 and a retaining clip 503, and preferably further includes a screw body 504 connected to the first screw seat 501; the shank 504 is externally threaded for threading into the spinal column. The first nail seat 501 is provided with a first through hole 501a formed along the radial direction and a first screw hole 501b formed along the axial direction; the first through hole 501a is used for the flexible connector 20 to movably pass through, the first plug screw hole 501b is communicated with the first through hole 501a, and the first plug screw 502 is used for screwing in the first plug screw hole 501 b; the retaining clip 503 is connected to the screwing end of the first plug screw 502 (and the lower end of the first plug screw 502 in fig. 5b and 5 c), and is used for limiting the screwing position of the first plug screw 502. Optionally, the first plug screw hole 501b has an internal thread, the first plug screw 502 has an external thread matching the internal thread of the first plug screw hole 501b, and the first plug screw 502 can be screwed into the first plug screw hole 501 b. And the retaining clip 503 enables the first plug 502 to be restricted in axial position in the first plug hole 501b without spontaneously coming out or spontaneously being over-tightened after being screwed into the first plug hole 501b to a predetermined depth. Preferably, the structure of the middle limiting screw 51, the first corner screw 40 and the second corner screw 52 is similar, and each of them includes a first nail seat 501, a first screw plug 502, a retaining clip 503 and a nail body 504.

Referring to fig. 5a to 5c, preferably, the retaining clip 503 is rotatably connected to the first plug 502 along the circumferential direction of the first plug 502, and is limited in axial position relative to the first plug 502; the first nail seat 501 is provided with a clamping groove 501c, the retaining hoop 503 is provided with an elastic clamping arm 503a, and the clamping arm 503a is clamped into the clamping groove 501c to limit the axial position of the retaining hoop 503 relative to the first nail seat 501. In an alternative example, the first plug 502 has an annular clamp groove 502a on the outer circumference, the anti-return clamp 503 includes a clamp ring 503b connected to the clamp arm 503a, the clamp ring 503b has a ductility with an inner diameter matched with the outer diameter of the clamp groove 502a, the clamp ring 503b can be clamped into the clamp groove 502a through elastic deformation and can rotate circumferentially around the clamp groove 502a, but the clamp ring 503b is restricted from moving axially along the first plug 502 by the clamp groove 502 a. Optionally, the engaging groove 501c is located on one side of the first plug hole 501b close to the nail body 504, and is preferably an annular inward-opening groove, and the inner diameter of the engaging groove 501c is larger than the small diameter of the first plug hole 501b, during the screwing process, the engaging arm 503a is extruded by the sidewall of the first plug hole 501b to generate inward elastic deformation, until the engaging arm 503a reaches the engaging groove 501c, and is not extruded by the sidewall of the first plug hole 501b any more, and the elastic deformation is recovered and is engaged in the engaging groove 501 c. At this time, as shown in fig. 4, a certain gap is formed between the first plug screw 502 and the flexible connecting body 20, so that the flexible connecting body 20 is ensured to be movable in the first through hole 501a along the axial direction, and only the radial position of the flexible connecting body 20 is limited. After the engaging arm 503a is engaged in the engaging groove 501c, the screwing position of the first plug 502 can be restricted. The first plug 502 is continuously screwed in or out and is subjected to the relative acting force of the clamping arm 503a and the clamping groove 501c, and unless a force greater than the elastic deformation of the clamping arm 503a is applied, the first plug 502 cannot be spontaneously screwed out or screwed in from the first plug hole 501b, so that the long-term reliability of the transition screw 50 after being implanted into a human body is ensured. Preferably, the retaining band 503 has at least 2 engaging arms 503a disposed opposite to each other in the radial direction, and the retaining band 503 may have more than 3 engaging arms 503a uniformly distributed in the circumferential direction. Alternatively, the engaging arms 503a may be replaced with engaging rings that are continuously provided in the circumferential direction, and the engaging ring may be understood as a plurality of engaging arms 503a that are integrally connected in the circumferential direction.

Preferably, referring to fig. 6a and 6b, the first through hole 501a of the first turning screw 40 and/or the second turning screw 52 extends in a curved manner, the curved angle can be set according to actual requirements, and the flexible connecting body 20 is guided by the first through hole 501a to change the extending direction when passing through the curved first through hole 501 a. Further, the first through holes 501a of the first and second corner screws 40 and 52 are bent in opposite directions. Alternatively, the first through hole 501a of the middle limiting screw 51 may extend linearly, or may extend in a curved shape with a larger radius, that is, extend slightly in a curved shape, which is not limited in this embodiment.

Referring to fig. 11 to 13b, in another alternative example, at least one of the middle limiting screw 51, the first turning screw 40 and the second turning screw 52 includes a third screw seat 505, the third screw seat 505 has a third through hole 505a opened along a radial direction, and the third through hole 505a is used for movably passing through the flexible connecting body 20. As can be appreciated, since the flexible connecting body 20 needs to be able to move in 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 connecting body 20, so that the flexible connecting body 20 can move.

In some application scenarios, the middle limiting screw 51, the first turning screw 40 or the second turning screw 52 may be similar ball screws, as shown in fig. 13a and 13 b. Wherein fig. 13b is an axial cross-sectional view of the transition screw shown in fig. 13 a. In general, the ball screw has a third through hole 505a through which the flexible connecting body 20 is inserted, and a third screw hole 505b along the axial direction through which a head screw is screwed to lock a member inserted through the third through hole 505 a. In this embodiment, the middle limiting screw 51, the first turning screw 40 and the second turning screw 52 do not need to lock the flexible connector 20, so the third through hole 505a can be left empty without being screwed into the jackscrew. So configured, the middle limit screw 51, the first corner screw 40, or the second corner screw 52 may be selected from existing ball screws without special customization. In particular, the third through hole 505a of the first or second turn screw 40 or 52 may also be curved to extend, so as to adapt to guide the flexible connector 20 to change the extending direction. Alternatively, as shown in fig. 13, the third nail seat 505 has a tool operation surface 505c, and the tool operation surface 505c may be a flat surface milled along the penetrating direction of the third penetrating hole 505a, and the tool operation surface 505c may be used for an operation tool (such as a wrench or a socket) to abut against or clamp in use, so that the operation tool can apply a torque to the third nail seat 505. It is understood that the tool operation surface 505c is not limited to be disposed opposite to the third through hole 505a in the through direction, and may be disposed at any circumferential position of the third nail seat 505.

Referring to fig. 1 and 2 in combination with fig. 7a and 7b, in an alternative example, the transverse connecting assembly 10 includes a first transverse connecting member 11, a second fixing screw 12 and a third fixing screw 13; the first cross member 11 extends across the reference plane 01, one end of the first cross member 11 on the first side 011 is recessed along a screwing direction of the second fixing screw 12, the first cross member 11 has a connection port 110 in a recessed area, and the second fixing screw 12 is used for being fixed on the predetermined object on the first side 011 through the connection port 110; one end of the first cross-piece 11 on the second side 012 is connected to the third fixing screw 13, so as to be fixed on the predetermined object on the second side 012. Because the one end in first side 011 of first cross-piece 11 is sunken, after supplying second set screw 12 to fix, the region of sunken is pressed under second set screw 12 for the screw head that emits of second set screw 12 is lower, thereby can reduce the incisal track after implanting, is favorable to reducing the stimulation to the tissue, reduces the foreign matter and feels.

The first, second and third fixing screws 30, 12 and 13 may be the same or similar fixing screws, referring to fig. 8, in an exemplary embodiment, the first, second and third fixing screws 30, 12 and 13 include a second nail seat 121 and a second screw plug 122, and preferably further include a nail body 123 connected to the second nail seat 121; the shank 123 has external threads for threading into the spinal column. The second nail seat 121 is provided with a second through hole 121a formed along the radial direction and a second screw hole 121b formed along the axial direction; the second through hole 121a is used for a flexible connector 20 (such as the second through hole 121a of the first fixing screw 30 and the third fixing screw 13) or the first cross-connecting member 11 (such as the second through hole 121a of the second fixing screw 12) to pass through, the second screw hole 121b is communicated with the second through hole 121a, and the second screw plug 122 is used for screwing into the second screw hole 121b to fix the flexible connector 20 or the first cross-connecting member 11. The first set screw 30, the second set screw 12 and the third set screw 13 have substantially the same structure as the transition screw 50 shown in fig. 3, but the set screws do not include the retaining clip 503, so that the second plug screw 122 can be screwed into the second screw hole 121b without being restricted or obstructed so as to be pressed against the flexible connecting body 20 or the first crosspiece 11 to hold the flexible connecting body 20 or the first crosspiece 11 in compression.

Optionally, one end of the first cross-piece 11 on the second side 012 is in a round bar shape or a column shape with a flat surface, and after being inserted into the second through hole 121a of the second fixing screw 12, the first cross-piece can be pressed by the second plug screw 122. Other structures and principles of the fixing screw are referred to in the prior art, and the embodiment is not described herein.

Optionally, the outer contour of the second nail seat 121 of the second fixing screw 12 is larger than the inner contour of the connecting port 110, the nail body 123 of the second fixing screw 12 is used for being screwed into and fixed on the spinal column through the connecting port 110, and the second nail seat 121 is pressed in the concave area of the first transverse connecting piece 11, so as to realize the fixation of the first transverse connecting piece 11 and the first side 011 of the spinal column. Preferably, the connection port 110 may be a through hole or a fork-shaped opening structure, but the present embodiment is not limited thereto, and a fork-shaped opening structure is preferred, which facilitates the installation of the second fixing screw 12.

Referring to fig. 9a and 9b, optionally, the second fixing screw 12 has a rotation limiting portion 124, the rotation limiting portion 124 is snapped into the connection port 110, and the connection port 110 limits the rotation limiting portion 124 to rotate circumferentially. The contours of the connection port 110 and the rotation limiter 124 should be configured to be non-circular, such as polygonal, square, oblate, elliptical, or other regular or irregular shapes. After the rotation limiting part 124 is clamped into the connecting port 110, the circumferential rotation of the second fixing screw 12 relative to the first transverse connecting piece 11 is limited, so that the spinal rotation stress can be prevented from damaging the stability of the fixation of the second fixing screw 12.

Referring to fig. 11 to 15c, in another alternative example, the transverse connecting assembly 10 includes a second transverse connecting member 14, two fastening assemblies 15, a fourth fixing screw 16 and a fifth fixing screw 17; the second transverse connecting piece 14 extends across the reference surface 01, the second transverse connecting piece 14 has two first fastening holes 140, and the two first fastening holes 140 are distributed on two sides of the reference surface 01 and are respectively used for the two fastening assemblies 15 to penetrate through; the end of the second cross-piece 14 on the first side 011 is connected to the fourth fixing screw 16 through one of the fastening assemblies 15; the second cross-piece 14 is connected to the fifth fixing screw 17 at one end of the second side 012 via another fastening assembly 15; the fourth fixing screw 16 is used for fixing to the predetermined object on the first side 011, and the fifth fixing screw 17 is used for fixing to the predetermined object on the second side 012.

The second cross-piece 14 is connected with the fourth fixing screw 16 and the fifth fixing screw 17 through the fastening assembly 15, and the requirements on the construction of the fourth fixing screw 16 and the fifth fixing screw 17 are low, i.e. the fourth fixing screw 16 or the fifth fixing screw 17 does not need to be specially customized, and the existing common ball head screw can be selected, so that the construction of the whole flexible orthopedic system is simplified, and the operation cost is reduced.

Optionally, the tightening assembly 15 includes a tightening nut 151 and a third plug 152; the fourth and fifth set screws 16, 17 include a fourth nail seat 161; the fourth nail seat 161 has a fourth screw hole opened along the axial direction; a part of the third plug screw 152 is used for screwing into the fourth plug screw hole, another part of the third plug screw 152 is left outside the fourth plug screw hole and passes through the first fastening hole 140, and the fastening nut 151 is in threaded connection with the part of the third plug screw 152 passing through the first fastening hole 140, so as to fasten the second cross connecting piece 14 with the fourth fixing screw 16 and the fifth fixing screw 17 respectively. The third plug screw 152 has a long axial length, and after one end of the third plug screw 152 is screwed into the fourth plug screw hole, the other end of the third plug screw can be exposed out of the fourth plug screw hole, and the second cross member 14 is placed on the fourth nail seat 161, so that the first fastening hole 140 is sleeved outside the exposed section of the third plug screw 152, and at this time, the third plug screw 152 should be long enough to be at least exposed out of the first fastening hole 140. Finally, the fastening nut 151 is fitted around the exposed end of the third plug 152, and the second cross member 14 is fastened to the fourth fixing screw 16 or the fifth fixing screw 17 by screwing the fastening nut 151. It will be appreciated that in some embodiments, the outer diameter of the tightening nut 151 is greater than the diameter of the first tightening bore 140; in other embodiments, the fastening nut 151 may be fastened to the first fastening hole 140 by an additional gasket, but the present invention is not limited thereto.

Further, in the fourth fixing screw 16, the fourth nail seat 161 further has a fourth through hole 161b formed along the radial direction, the fourth through hole 161b is used for the flexible connector 20 to pass through, the fourth through hole 161b is communicated with the fourth screw hole, and the third screw 152 screwed into the fourth screw hole is used for fixing the flexible connector 20. In addition to being used to assemble the second cross member 14, the fourth set screw 16 also needs to be connected to the flexible connector 20 and further fix the flexible connector 20. Therefore, the fourth nail seat 161 of the fourth fixing screw 16 is further opened with a fourth through hole 161b, and the flexible connecting body 20 can be pressed in the fourth through hole 161b by screwing in the third plug 152 after penetrating the fourth through hole 161 b. It is understood that, in order to simplify the specification and quantity of consumables during the operation, the fourth nail seat 161 of the fifth fixing screw 17 may also have a fourth through hole 161b opened along the radial direction, so that the fifth fixing screw 17 may actually be a ball screw of the same type as the middle 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 the operation.

Referring to fig. 14 to 15c, the transverse connecting assembly 10 further includes a sliding adjuster 18; the sliding adjusting piece 18 is movably connected with the second cross piece 14 along the extending direction of the second cross piece 14; the sliding adjustment part 18 is provided with a second fastening hole 180 for the third screw plug 152 to pass through; during the movement of the slide adjusting member 18 along the second cross member 14, the third screw 152 can pass through the first fastening hole 140 and the second fastening hole 180 simultaneously. The purpose of the slide adjustment 18 is to allow the second cross member 14 to be fine-tuned in position intraoperatively relative to the fourth set screw 16 and the fifth set screw 17 to accommodate a variety of different surgical scenarios. It should be noted that the extending direction of the second cross member 14 is substantially perpendicular to the reference plane 01, but it is not limited to being perpendicular to the reference plane 01 and may form an angle with the reference plane 01. For example, in the example shown in fig. 15b, the second transverse connecting members 14 are bent at two sides of the reference plane 01, and the extending directions of the second transverse connecting members 14 at two sides of the reference plane 01 form included angles of 50 ° to 70 ° with the reference plane 01. Of course, in other embodiments, the second cross-member 14 with other suitable shapes can be selected by those skilled in the art according to the actual condition of the patient, and the invention is not limited thereto.

Further, in an exemplary embodiment, the sliding adjusting member 18 is substantially C-shaped, the inner sides of the two wings of the C-shape are provided with bosses 181, and are adapted, the two sides of the second transverse member 14 are provided with sliding grooves 141 arranged along the extending direction thereof, and the sliding adjusting member 18 is engaged in the sliding grooves 141 of the second transverse member 14 through the bosses 181, so that the sliding adjusting member 18 is limited to move only along the extending direction of the second transverse member 14 without being disengaged. Since the third screw plug 152 can simultaneously pass through the first fastening hole 140 and the second fastening hole 180 in the moving stroke of the sliding adjusting piece 18 along the second cross-piece 14, the position of the second cross-piece 14 relative to the third screw plug 152 can be adjusted by the movement of the sliding adjusting piece 18, thereby adjusting the position of the second cross-piece 14 relative to the fourth fixing screw 16 or the fifth fixing screw 17.

In an alternative example, the first fastening hole 140 is an elongated hole (e.g., an elongated hole, etc.), and the long axis thereof is arranged along the extending direction of the second cross member 14; the second fastening hole 180 is adapted to the third plug 152. It should be noted that the second fastening hole 180 is matched with the third plug 152, which means that the inner diameter of the second fastening hole 180 is slightly larger than the outer diameter of the third plug 152, so that the third plug 152 can pass through the second fastening hole 180, but is limited by the second fastening hole 180 to move radially. It will be appreciated that since the third plug 152 is capable of passing through the first tightening bore 140, the minor axis length of the first tightening bore 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 cross member 14, the third screw 152 is driven to move along the long axis direction in the first fastening hole 140, so as to adjust the position of the second cross member 14 relative to the third screw 152. It should be understood that the slide adjustment member 18 is only used to adjust the position of the second cross member 14 relative to the fourth set screw 16 or the fifth set screw 17 during the operation, which facilitates the operation. After the sliding adjusting member 18 is adjusted to a proper position in the operation, the position of the sliding adjusting member 18 relative to the second cross member 14 is relatively fixed after the tightening nut 151 is tightened and locked.

Referring to fig. 1 and 2, in an alternative example, the flexible orthotic system includes: two of the first set screws 30, two of the first corner screws 40, and two of the flexible connectors 20; two first fixing screws 30 are distributed on two sides (upper and lower sides in fig. 2) of the transverse connection assembly 10 along the longitudinal direction; two first turning screws 40 are distributed on two sides of the transverse connecting component 10 along the longitudinal direction; one end of each of the two flexible connecting bodies 20 is connected with the part of the same transverse connecting assembly 10 on the first side 011; the other ends of the two flexible connectors 20 are respectively connected to two different first fixing screws 30 after the extending direction is changed by two different first turning screws 40. In some application scenarios, the lateral bending section of the spine is relatively long, the effect of flexible fixation is limited only by adopting one side of the transverse connection assembly 10, two sets of flexible fixation systems of the flexible connection bodies 20 can be respectively arranged at two longitudinal sides of the transverse connection assembly 10, and the flexible fixation systems can disperse the tensile force of the transverse connection assembly 10 towards one longitudinal side, so that the transverse connection assembly 10 is stressed in a balanced manner in the longitudinal direction, and the stability of the transverse connection assembly 10 is facilitated. Further, the transition screws 50 may be disposed on both longitudinal sides of the transverse connecting assembly 10, and particularly, the number of the middle limit screws 51 on both longitudinal sides of the transverse connecting assembly 10 may be the same or different, which is not limited in this embodiment, and may be selected according to different conditions of the lateral bending section of the spine. In other embodiments, a continuous flexible connecting body 20 may penetrate through the transverse connecting member 10 to flexibly fix both longitudinal sides of the transverse connecting member 10, which is not limited in this embodiment. Preferably, however, two separate flexible connectors 20 are used on both longitudinal sides of the transverse connection assembly 10, which on one hand facilitates the installation during surgery, and on the other hand, the flexible connectors 20 on both longitudinal sides of the transverse connection assembly 10 can be pulled differently to adapt to different practical requirements.

In order to accommodate two different flexible connectors 20, please refer to fig. 10a and 10b in combination with fig. 9a to 9c, in an alternative example, the second fixing screw 12 includes two second screw plugs 122, the second through hole 121a of the second fixing screw 12 is used for two flexible connectors 20 to pass through, the second nail seat 121 has two second screw plug holes 121b, and the two second screw plug holes 121b overlap in a radial direction; at least one of the second screw plugs 122 has a circumferential notch 122a, the circumferential notch 122a is adapted to a circumcircle 122b (shown by a dotted line in fig. 10 b) of another second screw plug 122, and the two second screw plugs 122 are used for screwing into the two second screw plug holes 121b to respectively fix the two flexible connectors 20. It is understood that the two second plugs 122 may be the same or different; the inner diameters of the two second screw holes 121b may be the same or different, which are respectively adapted to the two second screws 122. At least one second screw plug 122 has at least one circumferential notch 122a, in use, the second screw plug 122 with the circumferential notch 122a is screwed into its corresponding second screw plug hole 121b first, and after the corresponding flexible connecting body 20 is compressed to a predetermined depth, the circumferential notch 122a is aligned with the center of another second screw plug 122, and the screwing in of another second screw plug 122 is not hindered. The two second screw holes 121b are overlapped in the radial direction, so that the two flexible connectors 20 can be closer to each other, the space volume of the second nail seat 121 can be reduced, and the surgical trauma can be reduced.

In the exemplary embodiment shown in fig. 10a and 10b, the two second screw plugs 122 are identical and each have 3 circumferential recesses 122 a. So configured, on the one hand, the number of equipment in operation is facilitated to be simplified, and the use by an operator is also facilitated, i.e., the different second screw plugs 122 do not need to be distinguished particularly; on the other hand, the arrangement of the 3 circumferential notches 122a is beneficial to ensuring that one circumferential notch 122a faces the other second plug screw 122 only by adjusting +/-30 degrees at most after the second plug screw 122 is screwed to a predetermined depth; on the other hand, both the two second screw plugs 122 have the circumferential notches 122a, so that the screwing sequence of the two second screw plugs 122 is not limited, and after the two second screw plugs 122 are screwed in successively, the circumferential notches 122a face the second screw plug 122 screwed in first through adjusting the angle of the screwed-in second screw plug 122, and then the second screw plug 122 screwed in first can be adjusted again, thereby facilitating the adjustment operation in the operation. Of course, in some other embodiments, the number of the circumferential notches 122a on the second plug screw 122 is not limited to 3, and may be 1, 2 or more.

Referring to fig. 11 and 12, in another alternative example, the fourth through hole 161b of the fourth fixing screw 16 is used for two flexible connectors 20 to pass through, and the fourth nail seat 161 has two fourth screw holes, which overlap in the radial direction; suitably, the tightening assembly 15 comprises two third plug screws 152, and the structure of the two third plug screws 152 may be similar to the structure of the two second plug screws 122, that is, at least one of the third plug screws 152 has a circumferential notch, so that the two third plug screws 152 can be screwed into the two fourth plug holes which radially overlap. The specific structure and principle thereof can refer to the above description about the second plug screw 122 and the second plug screw hole 121b, and will not be repeated here. Specifically, the two third plugs 152 in the tightening assembly 15 have different axial lengths, one of the third plugs 152 is preferably not exposed from the fourth through hole 161b after being screwed into the fourth through hole 161b and pressing the corresponding flexible connector 20, and the other of the third plugs 152 is preferably exposed from the fourth through hole 161b after being screwed into the fourth through hole 161b and pressing the corresponding flexible connector 20, so as to facilitate connection of the tightening nut 151.

Referring to fig. 12, preferably, the flexible orthopedic system further comprises: a positioning member 70; the positioning member 70 is coupled to the first and second turning screws 40 and 52, respectively, to limit the relative positions of the first and second turning screws 40 and 52. The positioning member 70 is provided to limit the spacing between the first and second corner screws 40 and 52. Since the two corner screws are connected by the flexible connecting body 20, the two corner screws may approach each other due to the tension of the flexible connecting body 20, and in an application scenario corresponding to some patients, the positioning member 70 may be used to define the positions of the first corner screw 40 and the second corner screw 52, so that the two corner screws are kept relatively fixed. The present embodiment does not specifically limit the specific structure of the positioning member 70. In an exemplary embodiment, to simplify the number of consumables in operation, the positioning member 70 may be the same structure as the second cross member 14, and the first and second corner screws 40 and 52 may be the same structure as the fifth fixing screw 17, so that the positioning member 70 may also be fixed to the first and second corner screws 40 and 52 by the corresponding fastening assembly 15, and the description of the embodiment will not be repeated, and the skilled person can refer to the corresponding description of the components of the second cross member 14 and the fastening assembly 15.

Alternatively, the flexible connector 20 may be a cable or other similar flexible structure, and the flexible connector 20 preferably comprises a plurality of metal wires, such as titanium alloy wires or other metal wires with good biocompatibility, and the titanium alloy wires may be TI6AL4V ELI. Optionally, the minimum elongation of the titanium alloy wire is not less than 10%. Since the flexible connectors 20 need to have a certain tensile strength and flexibility, the number of strands of the flexible connectors 20 is preferably 7X7, 19X7, 7X19, 37X7, 7X37, 7X7+ (8)1X19, 7X7, 19X19, and the like. The overall outer diameter of the flexible connector 20 is between 3.0mm and 6.5mm, and the overall tensile strength of the flexible connector 20 is not less than 860 MPa.

Referring to fig. 16a and 16b in combination with fig. 11 and 12, preferably, the flexible orthopedic system further comprises a spacing joint 21, wherein the spacing joint 21 is disposed at least one end of the flexible connector 20; the limiting joint 21 is used for limiting the position of the flexible connecting body 20 along the axial direction thereof relative to the first fixing screw 30 and/or the transverse connection assembly 10. The limiting joint 21 is provided for additional limiting of the connection of the flexible connecting body 20 to the first fixing screw 30 or the transverse connection assembly 10. For convenience of description, an end of the flexible connecting body 20 connected to the lateral connecting member 10 is referred to as a first end, and an end of the flexible connecting body 20 connected to the first fixing screw 30 is referred to as a second end. In one example, a spacing joint 21 is disposed at a second end of the flexible connector 20. After the flexible connecting body 20 sequentially passes through the middle limiting screw 51, the first turning screw 40, the second turning screw 52 and the first fixing screw 30, the second end of the flexible connecting body 20 preferably extends out of the radial through hole of the first fixing screw 30, and the limiting joint 21 is arranged on the extended flexible connecting body 20. Alternatively, the limiting connection 21 can be, for example, a flat sleeve, which can be snapped onto the flexible connecting body 20 by means of a suitable tool, for example by pressing it with hydraulic pliers. The radial dimension of the limit joint 21 is preferably larger than the radial through hole of the first fixing screw 30, and after the limit joint 21 is connected to the flexible connecting body 20, the flexible connecting body 20 is limited from moving continuously in the direction of the transverse connecting assembly 10 when moving in the direction of the transverse connecting assembly 10 until the limit joint 21 abuts against the first fixing screw 30, so that additional supplementary limit of the flexible connecting body 20 and the first fixing screw 30 is realized, and the flexible connecting body 20 is prevented from being separated from the first fixing screw 30 due to the screw plug failure of the first fixing screw 30. On the other hand, the arrangement of the limit joint 21 can also simplify the operation steps. Specifically, the limit joint 21 may be fixed to the second end of the flexible connecting body 20 during preparation before operation, and the first end of the flexible connecting body 20 is inserted from the first fixing screw 30 until passing through the transverse connection assembly 10, so that the operator may directly pre-tighten the first end of the flexible connecting body 20 without screwing the plug screw of the first fixing screw 30. After the flexible connector 20 is pre-tightened into place, the assembly is completed by tightening the plug on the transverse connector assembly 10 and then tightening the plug on the first set screw 30. It can be understood that the positioning of the limiting joint 21 can simplify the threading process of the flexible connector 20. Of course, in other embodiments, the limiting joint 21 can also be disposed at the first end of the flexible connecting body 20, or disposed at both ends of the flexible connecting body 20, which is not limited by the present invention.

Preferably, the flexible orthotic system further comprises: a protective sheath 60; the protective sheath 60 is disposed outside the exposed portion of the flexible connector 20. The protective sheath 60 can be made of a polymer material, preferably a biocompatible polymer material, and has a certain elasticity without causing damage to human tissues. Since the flexible connecting body 20 is preferably a plurality of strands of metal wire with certain gaps, human tissue can easily grow into the flexible connecting body after being implanted into a human body without protection. The protective sheath 60 functions to prevent the human tissue 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 achieving flexible orthopedic. Optionally, the protective sleeve 60 is sleeved on the flexible connector 20 between the adjacent screws in a segmented manner.

In summary, the present invention provides a flexible orthopedic system for being disposed on a strip-shaped predetermined object, wherein the predetermined object is longitudinal along a direction of extension thereof, and the predetermined object has a reference surface extending along the longitudinal direction; the two sides of the reference surface are respectively a first side and a second side; the flexible orthopedic system includes: the transverse connecting assembly, the flexible connecting body, the first fixing screw and the first turning screw are arranged on the base; the transverse connecting component is used for being fixed on the predetermined object across the reference surface; the first turning screw is used for being fixed on the predetermined object on the first side and is positioned on a different longitudinal position from the transverse connecting component; the first fixing screw is used for being fixed on the predetermined object on the second side; one end of the flexible connecting body is used for being connected with the part, located on the first side, of the transverse connecting assembly, and the other end of the flexible connecting body is used for striding over the reference surface after the extending direction of the first turning screw is changed and is connected with the first fixing screw. The flexible connecting body is fixed on a preset object through the first fixing screw and the transverse connecting assembly, and correction is achieved through traction force of the flexible connecting body, the flexible fixing device belongs to flexible fixing, particularly, when a teenager spine is configured into the preset object, correction of bones of the teenager can be achieved by being adaptive to continuous growth regulation of the teenager spine, spine correction external force can be continued after operation, the flexible growth of the spine is allowed, damage to the development of the bones is small, and the spine correction effect is good. In addition, because the transverse connecting component is directly fixed on the preset object, the surgical wound is small, and the recovery of a patient is facilitated.

It should be noted that, several of the above embodiments may be combined with each other. The above description is only for the preferred embodiment of the present invention and is not intended to limit the scope of the present invention, and any modification and modification made by those skilled in the art according to the above disclosure are all within the scope of the claims.

Claims (19)

1. A flexible orthopedic system is used for being arranged on a strip-shaped predetermined object, the predetermined object is longitudinal along the extending direction of the predetermined object, and the predetermined object is provided with a reference surface extending along the longitudinal direction; the two sides of the reference surface are respectively a first side and a second side; wherein the flexible orthotic system comprises: the transverse connecting assembly, the flexible connecting body, the first fixing screw and the first turning screw are arranged on the base;

the transverse connecting assembly is used for being fixed on the predetermined object across the reference surface;

the first turning screw is used for being fixed on the predetermined object on the first side and is positioned on a different longitudinal position from the transverse connecting component;

the first fixing screw is used for fixing on the predetermined object on the second side;

one end of the flexible connecting body is used for being connected with the part, located on the first side, of the transverse connecting assembly, and the other end of the flexible connecting body is used for striding over the reference surface after the extending direction of the first turning screw is changed and is connected with the first fixing screw.

2. The flexible orthopedic system according to claim 1, characterized in that the flexible orthopedic system comprises: a transition screw; the transition screw comprises a middle limiting screw and/or a second turning screw;

the middle limiting screw is used for being fixed on the preset object on the first side; the middle limiting screw is used for being arranged between the transverse connecting assembly and the first turning screw; the middle limiting screw is used for the flexible connecting body to movably penetrate through along the axial direction, and the middle limiting screw is used for limiting the radial position of the flexible connecting body;

the second turning screw is used for being fixed on the predetermined object on the second side; the second turning screw is used for being arranged between the first turning screw and the first fixing screw, and the second turning screw is used for changing the extending direction of the flexible connecting body.

3. The flexible orthopedic system according to claim 2, characterized in that at least one of the medial stop screw, the first corner screw and the second corner screw comprises a first nail seat having a first through hole radially opened and a first screw hole axially opened, a first screw plug and a backstop clamp; the first through hole is used for the flexible connector to movably penetrate through, the first plug screw hole is communicated with the first through hole, and the first plug screw is used for screwing in the first plug screw hole; the stopping clamp is connected with the screwing-in end of the first plug screw and used for limiting the screwing-in position of the first plug screw.

4. The flexible orthopedic system according to claim 3, wherein the backstop clamp is rotatably connected with the first plug in a circumferential direction of the first plug and is restrained from axial position relative to the first plug; first nail seat has the block groove, the stopping clamp has elastic block arm, the block arm is used for the card to go into the block groove, so that the restriction the stopping clamp for the axial position of first nail seat.

5. The flexible orthopedic system according to claim 3, characterized in that the first through-going hole of the first and/or second corner screw extends curvedly.

6. The flexible orthopedic system according to claim 2, characterized in that at least one of the middle stop screw, the first corner screw and the second corner screw comprises a third nail seat having a third through hole radially opened for movably passing the flexible connecting body therethrough.

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

8. The flexible orthopedic system according to claim 1, wherein the transverse connection assembly includes a first transverse link, a second set screw, and a third set screw;

the first cross piece extends across the reference surface, one end of the first cross piece on the first side is recessed along the screwing-in direction of the second fixing screw, the first cross piece is provided with a connecting port in the recessed area, and the second fixing screw is used for being fixed on the predetermined object on the first side through the connecting port;

one end of the first cross connecting piece on the second side is connected with the third fixing screw and is used for being fixed on the predetermined object on the second side.

9. The flexible orthopedic system according to claim 8, wherein the second set screw has a rotation limiter that snaps into the connection port that limits circumferential rotation of the rotation limiter.

10. The flexible orthopedic system according to claim 8, wherein the first set screw, the second set screw, and the third set screw include a second nail seat and a second plug screw, the second nail seat having a second through hole radially opened and a second plug screw hole axially opened; the second through hole is used for allowing a flexible connector or the first transverse connecting piece to penetrate, the second plug screw hole is communicated with the second through hole, and the second plug screw is used for screwing in the second plug screw hole so as to fix the flexible connector or the first transverse connecting piece.

11. The flexible orthopedic system according to claim 10, characterized in that the second fixing screw comprises two second plug screws, the second through hole of the second fixing screw is used for the two flexible connecting bodies to pass through, the second nail seat has two second plug screw holes, and the two second plug screw holes overlap in the radial direction; at least one second plug screw is provided with a circumferential notch, the circumferential notch is matched with the circumcircle of the other second plug screw, and the two second plug screws are used for screwing into the two second plug screw holes so as to respectively fix the two flexible connectors.

12. The flexible orthopedic system according to claim 1, wherein the transverse connection assembly comprises a second transverse link, two tightening assemblies, a fourth set screw, and a fifth set screw;

the second transverse connecting piece stretches across the reference surface, the second transverse connecting piece is provided with two first fastening holes, and the two first fastening holes are distributed on two sides of the reference surface and are respectively used for the two fastening assemblies to penetrate through;

one end of the second transverse connecting piece on the first side is connected with the fourth fixing screw through the fastening component; one end of the second cross connecting piece on the second side is connected with the fifth fixing screw through the other fastening assembly;

the fourth fixing screw is used for fixing on the predetermined object on the first side, and the fifth fixing screw is used for fixing on the predetermined object on the second side.

13. The flexible orthopedic system according to claim 12, wherein the tightening assembly includes a tightening nut and a third plug; the fourth and fifth set screws comprise a fourth nail seat; the fourth nail seat is provided with a fourth screw hole which is arranged along the axial direction; one part of the third plug screw is used for being screwed into the fourth plug screw hole, the other part of the third plug screw is reserved outside the fourth plug screw hole and penetrates through the first fastening hole, and the fastening nut is in threaded connection with the part of the third plug screw penetrating through the first fastening hole so as to fasten the second cross connecting piece with 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 in the radial direction, the fourth through hole is used for a flexible connector to pass through, the fourth through hole is communicated with the fourth plug hole, and the third plug screwed into the fourth plug hole is used for fixing the flexible connector.

15. The flexible orthopedic system according to claim 13, wherein the transverse connection assembly further comprises a slip adjustment; the sliding adjusting piece is movably connected with the second transverse connecting piece along the extending direction of the second transverse connecting piece; the sliding adjusting piece is provided with a second fastening hole for the third plug screw to penetrate through; in the moving stroke of the sliding adjusting piece along the second transverse connecting piece, the third screw plug can simultaneously pass through the first fastening hole and the second fastening hole.

16. The flexible orthopedic system according to claim 15, wherein the first fastening hole is an elongated hole having a long axis disposed along the direction of extension of the second cross-piece; the second fastening hole is matched with the third plug screw.

17. The flexible orthopedic system according to claim 1, further comprising a spacing joint disposed at least one end of the flexible connector; the limiting joint is used for limiting the position of the flexible connecting body relative to the first fixing screw and/or the transverse connecting component along the axial direction of the flexible connecting body.

18. The flexible orthotic system according to any one of claims 1 to 17, wherein the flexible orthotic system comprises: the two first fixing screws, the two first turning screws and the two flexible connecting bodies;

the two first fixing screws are distributed on two sides of the transverse connecting component along the longitudinal direction;

the two first turning screws are longitudinally distributed on two sides of the transverse connecting component;

one end of each flexible connecting body is connected with the part of the same transverse connecting assembly positioned on the first side; the other ends of the two flexible connectors are respectively connected with the two different first fixing screws after the extending directions of the two different first turning screws are changed.

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

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