CN114587551B - Internal fixing system for cervical vertebra lateral bending orthopedic cervical vertebra front path steel plate - Google Patents
Internal fixing system for cervical vertebra lateral bending orthopedic cervical vertebra front path steel plate Download PDFInfo
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- CN114587551B CN114587551B CN202210204161.7A CN202210204161A CN114587551B CN 114587551 B CN114587551 B CN 114587551B CN 202210204161 A CN202210204161 A CN 202210204161A CN 114587551 B CN114587551 B CN 114587551B
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
- A61B17/7059—Cortical plates
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/80—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates
- A61B17/8004—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates with means for distracting or compressing the bone or bones
- A61B17/8014—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates with means for distracting or compressing the bone or bones the extension or compression force being caused by interaction of the plate hole and the screws
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/80—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates
- A61B17/8052—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates immobilised relative to screws by interlocking form of the heads and plate holes, e.g. conical or threaded
- A61B17/8057—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates immobilised relative to screws by interlocking form of the heads and plate holes, e.g. conical or threaded the interlocking form comprising a thread
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/80—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates
- A61B17/8061—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates specially adapted for particular bones
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B2017/564—Methods for bone or joint treatment
Abstract
The patent relates to a be used for cervical vertebra side bending orthopedic cervical vertebra anterior approach steel sheet internal fixation system, include: the first end of the second steel plate is provided with a first screw hole, the second end of the second steel plate is provided with a second screw hole, and a rotary reset track is arranged between the first screw hole and the second screw hole; the first end of the first steel plate is provided with a third screw hole, the second end of the first steel plate is connected with the second steel plate through a shaft, and the axis of the shaft is perpendicular to the first steel plate and the second steel plate and is positioned between the rotary reset track and the second screw hole; the first steel plate is also provided with an orthopedic hole corresponding to the rotary reset track; a vertebral body rotating screw inserted into the vertebrae through the rotating reduction track and the orthopedic hole; the first screw is inserted into the vertebra through the first screw hole and the third screw hole, and the second screw is inserted into the vertebra through the second screw hole. The cervical vertebra lateral bending orthopedic device is simple in structure and convenient to operate, can prevent the vertebral body fixing screw from falling out, and achieves the effect of cervical vertebra lateral bending orthopedic in a true sense.
Description
Technical Field
This patent belongs to orthopedics medical instrument technical field, particularly relates to a be used for cervical vertebra side bending orthopedic cervical vertebra anterior approach steel sheet internal fixation system.
Background
With the progress of modernization in recent years, the traditional lifestyle has changed greatly. The physical labor of teenagers is relatively reduced, and the popularization of televisions, computers and the like is realized, so that the devices and the movement modes for modern life, entertainment, study and work are adapted to, people are forced to be always in a forced body position, the probability of chronic strain of soft tissues of the neck is increased, and cervical vertebra lateral bending phenomenon is gradually caused. The lateral curvature of cervical vertebra can affect the normal growth and development of bones of a patient, so that the patient has the appearance of pelvic tilt, uneven shoulder, uneven back, unequal legs, distorted body, short body and the like. The traditional Chinese medicine massage, self-correction or Milko type neck ring is usually used for controlling, and the effect is often not ideal.
With the continuous development of spinal surgery and internal fixation technology, internal fixation instruments are increasingly applied to the treatment of cervical spondylosis. At present, the anterior cervical approach nail plate internal fixation operation type is widely applied to the treatment of cervical vertebra wounds, degenerative diseases, deformities and tumor patients, and the anterior cervical approach internal fixation aims are as follows: the cervical vertebra is instantly stabilized, restored and maintained, the bone grafting fusion is promoted, and the external fixation is reduced. The anterior cervical spine plate internal fixation can not only enhance the stability of the cervical spine after operation, effectively reduce the bone grafting block falling out, the end plate fracture collapse and the delayed generation of the posterior cervical convex deformity, promote the bone grafting fusion of the lesion part, but also allow the early movement of patients when the external fixation is at least or not at all.
However, the existing anterior cervical spine nail plate is fixed on the anterior cervical spine by adopting screws, and the screws are prevented from falling off by utilizing the locking plate to cover the screws, however, the implementation process is complex in operation and high in difficulty, and the situation of falling off still exists, so that serious medical accidents are generated. In addition, the prior cervical spine front nail plate is of a single-layer plate structure, and the cervical spine front nail plate is difficult to accurately install and fix at the optimal correcting position of cervical vertebrae in actual operation, so that the correcting effect is not ideal. Accordingly, there is a need for an anterior cervical plate internal fixation system that is simple to operate, prevents screw back-out, and accurately fits and secures in the desired corrected position of the cervical vertebrae.
Disclosure of Invention
This patent is based on the above-mentioned demand of prior art and proposes, and the technical problem that this patent will solve provides a be used for cervical vertebra side bending orthopedic cervical vertebra anterior steel sheet internal fixation system to avoid the screw to deviate from and can the accurate ideal correction position of installation fixed at the cervical vertebra, and convenient operation.
In order to solve the technical problem, the technical scheme that this patent provided includes:
an internal fixation system for a cervical spine anterior approach steel plate for cervical spine lateral bending orthotics, comprising:
the first end of the second steel plate (2) is provided with a first screw hole, the second end of the second steel plate (2) is provided with a second screw hole, and a rotary reset track (7) is arranged between the first screw hole and the second screw hole;
the first end of the first steel plate (1) is provided with a third screw hole, the second end of the first steel plate (1) is connected with the second steel plate (2) through a shaft, and the axis of the shaft is perpendicular to the first steel plate (1) and the second steel plate (2) and is positioned between the rotary reset track (7) and the second screw hole; the first steel plate (1) is also provided with an orthopedic hole (14) corresponding to the rotary reset track (7);
a vertebral body rotation screw (5) inserted into a vertebra through the rotation reduction track (7) and the orthopedic hole (14);
a vertebral body fixation screw (4) comprising a first screw inserted into the vertebra through the first screw hole and the third screw hole and a second screw inserted into the vertebra through the second screw hole.
Preferably, the number of the first screw holes, the second screw holes and the third screw holes is 2.
Preferably, the hole walls of the first screw hole and the second screw hole are respectively provided with an anti-falling structure, and the anti-falling structure extrudes the loaded vertebral body fixing screw (4) through elastic deformation.
Preferably, the anti-falling structure is a buckle (3), and the buckle (3) is provided with an elastic bulge;
the side end surfaces of the first end and the second end of the second steel plate (2) are respectively provided with a clamping groove (10),
the cell wall in buckle groove (10) is equipped with buckle hole (11), buckle hole (11) with screw hole intercommunication, buckle (3) pack into behind buckle groove (10), elastic bulge warp buckle hole (11) stretch into in first screw hole, the second screw hole.
Preferably, the buckle (3) comprises a U-shaped elastic sheet (9), and the elastic bulge is arranged on the U-shaped elastic sheet (9).
Preferably, the periphery of the ball head of the cone fixing screw (4) is provided with a groove structure (8);
the anti-falling structure can rebound and be clamped into the groove structure (8) under the extrusion of the vertebral body fixing screw (4).
Preferably, the channel structure (8) comprises a first channel and a second channel, and the resilient protrusions comprise a first stage protrusion and a second stage protrusion.
Preferably, the shaft is a locking lever (6);
the second steel plate (2) is provided with a first rotary hole (12), and the first rotary hole (12) is positioned between the rotary reset track (7) and the second screw hole;
a second rotary hole (13) is formed in the second end of the first steel plate (1), and a riveting groove (18) is formed in the bottom of the second rotary hole (13);
the locking rod (6) is riveted in the riveting groove (18) through the first rotary hole (12) and the second rotary hole (13), and the first steel plate (1) is rotationally connected with the second steel plate (2).
Preferably, the riveted end (17) of the locking rod (6) is of a hollow cylinder structure.
Preferably, the rotary reset track (7) is a slotted hole, and the slotted hole is arranged around the hole center of the second rotary hole (13).
Preferably, the rotary reset track (7) is provided with a limiting assembly, the outer circumferential wall of the ball head of the cone rotary screw (5) is provided with a limiting groove (26), and the limiting assembly can be clamped into the limiting groove (26).
Preferably, the limiting component is an elastic bulge, and the elastic bulge is fixedly arranged on the track wall of the rotary reset track (7).
Preferably, the limiting assembly comprises a limiting spring (20) and a limiting steel ball (19);
the track wall of the rotary reset track (7) is provided with a limit steel ball groove (21), and the limit spring (20) and the limit steel ball (19) are arranged in the limit steel ball groove (21); one end of the limiting spring (20) is propped against the bottom of the limiting steel ball groove (21), and the other end of the limiting spring ejects part of the limiting steel ball (19) from the notch of the limiting steel ball groove (21).
Preferably, the ball head of the cone rotary screw (5) is provided with a reset driving interface (25), the side wall of the reset driving interface (25) is parallel to the axis of the nail body, and the side wall of the reset driving interface (25) is provided with an elliptic cylinder protrusion (251).
Preferably, the nail body of the vertebral body rotating screw (5) is a double-line thread structure 7.
The proposal can avoid the screw from falling out and accurately install and fix the ideal correction position of the cervical vertebra
Drawings
In order to more clearly illustrate the embodiments of the present description or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the embodiments of the present description, and other drawings may be obtained according to these drawings for a person having ordinary skill in the art.
FIG. 1 is an exploded view of an internal fixation system for a cervical spine anterior approach steel plate for cervical spine lateral curvature correction in accordance with the present application;
FIG. 2 is a front view of an internal fixation system for a cervical spine anterior approach steel plate for cervical spine lateral curvature correction in accordance with the present application;
FIG. 3 is a top view of an internal fixation system for cervical spine anterior steel plate for cervical spine lateral bending orthotics according to the present application;
FIG. 4 is a bottom view of an anterior cervical plate internal fixation system for cervical spine lateral curvature correction in accordance with the present application;
FIG. 5 is a cross-sectional view A-A of FIG. 2 showing an internal fixation system for a cervical spine anterior approach steel plate for cervical spine lateral curvature correction in accordance with the present application;
FIG. 6 is a sectional view B-B of FIG. 3 showing an internal fixation system for a cervical spine anterior approach steel plate for cervical spine lateral curvature correction in accordance with the present application;
FIG. 7 is a cross-sectional view C-C of FIG. 3 showing an internal fixation system for a cervical spine anterior approach steel plate for cervical lateral curvature correction in accordance with the present application;
FIG. 8 is a schematic view of a buckle for an internal fixation system of a cervical spine anterior steel plate for cervical lateral bending correction according to the present application;
FIG. 9 is a schematic view showing the structure of a vertebral body fixing screw for an internal fixation system of a cervical spine anterior approach steel plate for cervical spine lateral bending correction according to the present application;
fig. 10 is a schematic structural view of a vertebral body rotating screw for an internal fixation system of a cervical spine anterior steel plate for cervical lateral bending correction according to the present application.
Reference numerals:
1. a first steel plate; 2. a second steel plate; 3. a buckle; 4. a vertebral body fixing screw; 5. rotating the screw by the vertebral body; 6. a locking lever; 7. rotating the reset rail; 8. a trough structure; 9. a U-shaped spring plate; 10. a buckle groove; 11. a snap hole; 12. a first rotation hole; 13. a second rotation hole; 14. an orthopedic hole; 15. nailing the path; 16. nailing the path; 17. riveting the end; 18. riveting grooves; 19. limiting the steel balls; 20. a limit spring; 21. a steel ball groove; 22. a rotating rail 1; 23. a rotating rail 2; 25. resetting the driving interface; 26. a limit groove; 27. a double thread structure.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
For the purpose of facilitating an understanding of the embodiments of the present application, reference will now be made to the following description of specific embodiments, taken in conjunction with the accompanying drawings, which are not intended to limit the embodiments of the application.
In one embodiment of the present application, an internal fixation system for cervical spine lateral curvature orthopedic cervical spine anterior approach steel plate is disclosed, as shown in fig. 1 to 10, comprising:
the first end of the second steel plate 2 is provided with a first screw hole, the second end of the second steel plate 2 is provided with a second screw hole, and a rotary reset track 7 is arranged between the first screw hole and the second screw hole;
the first steel plate 1, the first end of the first steel plate 1 is provided with a third screw hole, the second end is connected with the second steel plate 2 through a shaft, the axis of the shaft is perpendicular to the first steel plate 1 and the second steel plate 2, and the shaft is positioned between the rotary reset track 7 and the second screw hole; the first steel plate 1 is also provided with an orthopedic hole 14 corresponding to the rotary reset track 7;
a vertebral body rotation screw 5 inserted into the vertebrae through said rotation reduction track 7 and said orthopedic hole 14;
the vertebral body fixing screw 4 includes a first screw inserted into the vertebra through the first screw hole and the third screw hole and a second screw inserted into the vertebra through the second screw hole.
In this embodiment, the first steel plate 1 and the second steel plate 2 have hyperbolic cambered surface designs which conform to the anatomical characteristics of the cervical vertebrae of the people in China, can be more attached to the vertebrae, and reduce the occurrence rate of reduction and disappearance of physiological curvature of the cervical vertebrae, so that the cervical vertebrae is firmly fixed, is not easy to loosen, and can reduce compression and damage to structures such as front esophagus.
In order to improve the installation stability of the internal fixing system of the cervical vertebra lateral bending orthopedic cervical vertebra front steel plate, two ends of the second steel plate 2 are respectively provided with 2 or 4 nail channels 15 for the vertebral body fixing screws 4 to pass through, and the nail channels 15 at two ends are arranged in parallel; one end of the first steel plate 1 is provided with 2 or 4 nail channels 16 for the vertebral body fixing screws 4 to pass through in parallel. Illustratively, as shown in fig. 1, the number of the first screw holes, the second screw holes and the third screw holes is 2, and by providing an even number of nail paths 15 and 16, the installation and fixation effects of the first steel plate 1 and the second steel plate 2 are ensured.
The second steel plate 2 is fixed to the vertebra through the centrum fixing screw 4 with the first steel plate 1, in order to prevent that the centrum fixing screw 4 from droing, be equipped with the anticreep structure in the nail way of the second steel plate 2, the anticreep structure is through elastic deformation extrusion centrum fixing screw 4, and the anticreep structure is looped in the nail way, and when the centrum fixing screw 4 is loaded into nail way 15 and nail way 16 in, the anticreep structure takes place elastic deformation, extrudes centrum fixing screw 4, and the anticreep structure that the centrum fixing screw 4 was installed through on the second steel plate 2 reaches fixed anticreep effect, and finally fixed locking becomes an organic whole, reaches fixed purpose. Illustratively, the hole walls of the first screw hole and the second screw hole are provided with an anti-drop structure. Through set up anticreep structure in the nail way of steel sheet, effectually avoided centrum set screw 4 to drop, increased simultaneously the fixed effect of connection between centrum set screw 4 and the cervical vertebra.
In a preferred embodiment of this embodiment, the hole wall of the third screw hole of the first steel plate 1 may also be provided with an anti-falling structure, and the anti-falling structure in the first screw hole is matched with the anti-falling structure, so that the anti-falling structure has a dual anti-falling effect, and further improves the fixing anti-falling effect.
In order to facilitate the disassembly and assembly of the fixing system in the front cervical vertebra steel plate, the anti-falling structure is a buckle 3, and the buckle 3 is provided with an elastic structure; the side end faces of the first end and the second end of the second steel plate 2 are respectively provided with a buckling groove 10, the groove walls of the buckling grooves 10 are provided with buckling holes 11, the buckling holes 11 are communicated with the screw holes, and after the buckling grooves 10 are filled with the buckles 3, the elastic structures extend into the screw holes through the buckling holes 11. The buckle 3 is pre-installed in the buckle groove 10 of the second steel plate 2, and the elastic structure extends into the first screw hole and the second screw hole through the buckle hole 11, so that one-step nailing operation is realized, and the operation time is greatly saved. Of course, it will be understood that the side end surface of the first end of the first steel plate 1 may be provided with the fastening groove 10 and the fastening 3 may be mounted, and the elastic structure of the fastening 3 presses the nail portion of the vertebral body fixing screw 4 to play a role in preventing the falling off.
In a preferred embodiment of this embodiment, the buckle 3 includes a U-shaped elastic piece 9,U, two elastic structures are provided on the outer side of the elastic piece 9, the elastic structures are arc-shaped elastic protrusions, as shown in fig. 8, the buckle 3 is pre-installed in the buckle slot 10 of the second steel plate 2, before the installation is completed, the U-shaped elastic piece 9 contracts inwards to advance along the buckle slot 10, when reaching the buckle hole 11, the U-shaped elastic piece 9 rebounds, and the arc-shaped elastic protrusions are blocked in the buckle hole 11, so as to complete the pre-installation; the first end of the second steel plate 2 is provided with two first screw holes, the second end of the second steel plate is provided with two second screw holes, the side end faces of the first end and the second end of the second steel plate 2 are respectively provided with a first buckling groove and a second buckling groove, the groove wall of the first buckling groove is provided with two first buckling holes, and the groove wall of the second buckling groove is provided with two second buckling holes; the groove wall of the first buckling groove is simultaneously communicated with the two first screw holes through the first buckling holes, and the two elastic protrusions of the first U-shaped elastic piece extend into the two first screw holes through the two first buckling holes respectively; the cell wall in second buckle groove passes through the second buckle hole simultaneously with two second screw holes intercommunication, and two elastic bulge of second U-shaped shell fragment stretches into two second screw holes through two second buckle holes respectively. The buckle with the structure has the advantages of simple design, excellent elastic deformation and convenient installation, and can achieve the purpose of locking and preventing the nail from backing out in one step, thereby greatly saving the operation time and reducing the bleeding amount of patients in operation.
In order to improve the anti-falling effect of the U-shaped elastic sheet, the U-shaped elastic sheet 9 is provided with a wedge-shaped structure, and the edge of the elastic bulge is thinned to allow the U-shaped elastic sheet 9 to slide through the groove-shaped structure 8 of the cone fixing screw 4. When the buckle 3 is inserted into the buckle groove 10, the buckle 3 can be gradually tapered relatively to the thicker part of the center of the U-shaped elastic piece 9 so as to be wedged into the buckle hole 11. The U-shaped elastic sheet 9 is firmly wedged in place by the force generated by friction contact between the buckle 3 and the buckle hole 11 and the groove-shaped structure 8 of the cone fixing screw 4, so as to prevent the cone fixing screw from withdrawing.
In order to further improve the anti-falling effect of the vertebral body fixing screw, as shown in fig. 9, the vertebral body fixing screw 4 comprises a screw body and a head, the head is a ball head, a groove structure 8 is arranged on the periphery of the ball head of the vertebral body fixing screw 4, and the groove structure 8 is an annular groove arranged in an annular mode. When the first steel plate 1, the second steel plate 2 and the vertebral body are fixed by the vertebral body fixing screw 4, the buckle 3 can rebound and be clamped into the groove structure 8 under the extrusion of the vertebral body fixing screw 4, so that the screw anti-retreating purpose is achieved. Through set up groove structure 8 at the bulb periphery of centrum set screw 4, for the outer peripheral wall of the pin fin of buckle 3 direct extrusion centrum set screw 4 or direct extrusion nail pole part, have better anticreep, anticreep effect.
In order to further improve the anti-falling effect of the vertebral body fixing screw, the groove structure 8 of the periphery of the ball head of the vertebral body fixing screw 4 comprises a first groove and a second groove, the first groove and the second groove are all annularly arranged around the periphery wall of the ball head, correspondingly, the buckle 3 is provided with two-stage elastic bulges, the two-stage elastic bulges comprise a first-stage elastic bulge and a second-stage elastic bulge, and the edges of the two-stage elastic bulges are thinned, so that the U-shaped elastic sheet 9 is allowed to slide through the first groove and the second groove of the vertebral body fixing screw 4. Through with the bulb periphery of centrum set screw 4 encircle setting up first groove and second groove, and supporting setting has the bellied buckle 3 of two-stage elasticity, realizes the two-stage anticreep effect.
In this embodiment, the first steel plate 1 and the second steel plate 2 are connected through shaft rotation, the size of the first steel plate 1 is smaller than that of the second steel plate 2, the first end of the first steel plate 1 is aligned with the first end of the second steel plate, the second end of the first steel plate 1 is located at the inner side of the second screw hole of the second steel plate 2, the first steel plate 1 and the second steel plate 2 can rotate around the shaft in a scissor shape, and the second screw penetrating into the second screw hole is directly inserted into the vertebra without penetrating through the first steel plate 1.
The second steel plate 2 has a first surface and a second surface, one end of the second surface is provided with a boss, the height of the boss is equal to the thickness of the first steel plate 1, the cone fixing screw 4 is installed in the nail path from the first surface to the second surface, and the second end of the first steel plate 1 is processed in an arc manner, so that rotation interference with the boss can be avoided, and flexible rotation of the first steel plate 1 and the second steel plate 2 is ensured.
In a preferred embodiment of this example, the shaft is a locking rod 6, the rod body of the locking rod 6 is in a polished rod structure, the first steel plate 1 and the second steel plate 2 are connected through the locking rod 6, and the riveting end 17 of the locking rod 6 is in a hollow cylinder structure; the second steel plate 2 is provided with a first rotary hole 12, and the first rotary hole 12 is positioned between the rotary reset track 7 and a second screw hole; a second rotary hole 13 is formed in the second end of the first steel plate 1, and a riveting groove 18 is formed in the bottom of the second rotary hole 13; the locking rod 6 is riveted in the riveting groove 18 through the first rotary hole 12 and the second rotary hole 13, and the first steel plate 1 and the second steel plate 2 are rotationally connected. The structural design allows the cervical vertebrae of the contralateral curvature to be subjected to orthopedic reduction, the operation is simple and convenient, the learning curve of a doctor is short, the bleeding of a patient in operation is less, the recovery is quick, and the satisfaction degree of doctors and patients is greatly increased.
In a preferred embodiment of this example, the first steel plate 1 is provided with an orthopedic hole 14, corresponding to the rotating reset rail 7 provided by the second steel plate 2, the orthopedic hole 14 is a circular through hole, the vertebral body rotating screw 5 is inserted into the vertebra after passing through, and the vertebral body rotating screw 5 sequentially passes through the rotating reset rail 7 and the orthopedic hole 14 and is fixed on the vertebra to be orthopedic. Further, the second steel plate 2 is provided with a rotary reset track 7 for the first steel plate 1, the rotary reset track 7 is a slotted hole, and the slotted hole is arranged around the hole center of the second rotary hole 13. The second steel plate 2 is fixed on the vertebral body without correction in advance by inserting 2 vertebral body fixing screws 4 into second screw holes of the second steel plate 2, the first steel plate 1 is rotated to an angle before correction, then the vertebral body rotating screw 5 tightly fixed with the first steel plate 1 is driven by a special surgical instrument to rotate to the position, which is overlapped with the first screw holes of the second steel plate 2, of the first steel plate 1, at the moment, the limit steel balls 19 on the second steel plate 2 can be just clamped into limit grooves 26 of the vertebral body rotating screw 5, and the cervical vertebrae of the lateral bending can achieve the purpose of resetting, so that the cervical vertebrae lateral bending correction effect in the true sense is realized.
In order to improve the adaptability to the assembly apparatus, as shown in fig. 10 (a) - (c), the vertebral body rotation screw 5 includes a screw body and a screw head, the screw head of the vertebral body rotation screw 5 is in a ball head structure, the screw body is in a double-line thread structure 27, the double-line thread structure 27 can firmly fix the vertebrae to drive the vertebrae to rotate and reset, the screw head of the vertebral body rotation screw 5 is provided with a reset driving interface 25, and the reset driving interface 25 is matched with a driving screwdriver of a special surgical apparatus.
Further, the whole recess structure that is of the drive interface 25 that resets, recess structure's lateral wall sets up the arch, the lateral wall that resets the drive interface 25 sets up parallel to the axis of the nail body, the drive interface that resets is formed by 6 elliptic cylinder archs 251 and 6 elliptic cylinder recesses alternate connection, also can understand that the lateral wall that resets the drive interface 25 evenly sets up 6 elliptic cylinder archs 251, set up an elliptic cylinder recess between two elliptic cylinder archs 251, elliptic cylinder arch 251 and elliptic cylinder recess lug connection, as shown in fig. 10 (c), overlook the pin head of centrum rotary screw 5, the lateral wall shape projection of drive interface 25 that resets is the closed curve of concave-convex section interval, concave section curve and convex section curve are the one side curve of elliptic major axis.
By designing the reset drive interface 25 as a protrusion and a recess with an elliptical geometry, the following advantages are achieved:
(1) the full contact surface-elliptic geometric structure is quite unique, so that the meshing degree of the driving screwdriver of the special surgical instrument and the reset driving interface 25 can be maximized, and the driving force of the driving screwdriver can be distributed on the whole meshing surface, thereby prolonging the service life of the special tool and maximizing the transmission torque. (2) The high torque transmission characteristic-0 degree driving angle is realized, the radial force of stress concentration caused by the notch of the reset driving interface is eliminated, and the torque transmission speed can be ensured to reach the optimal state when the special tool drives the vertebral body rotary screw to reset. (3) The risk of skidding of the special tool is reduced, namely, the side wall of the reset driving interface is straight, the skidding risk caused by the deviating force of the connecting protruding part of the special tool is eliminated, the end part of the special tool screwdriver is completely surrounded by the notch of the reset driving interface, the possibility of damage to the appearance is reduced, and the service life of the special tool is prolonged.
In order to enable the vertebral body rotating screw 5 to drive the vertebral body to be subjected to lateral bending correction to reset to a required fixed position, the rotating reset track 7 is provided with a limiting assembly, the outer circumferential wall of the ball head of the vertebral body rotating screw 5 is provided with a limiting groove 26, and the limiting assembly can be clamped into the limiting groove 26 to achieve a limiting position.
The limiting component of the embodiment is an elastic bulge, the elastic bulge is fixedly arranged on the track wall of the rotary reset track 7, namely on the hole wall of the oblong hole, the cone rotary screw 5 rotates in the rotary reset track 7 towards the reset position, and when the elastic bulge is clamped into the limiting groove 26 of the cone fixing screw 5, the final limiting position is achieved.
Still another spacing component of this embodiment, including spacing spring 20 and spacing steel ball 19, the track wall of rotatory reset track 7 (i.e. the pore wall of slotted hole) is equipped with spacing steel ball groove 21, install the spacing component of combination that comprises spacing spring 20 and spacing steel ball 19 in the spacing steel ball groove 21, the diameter of spacing steel ball 19 is greater than the groove diameter of spacing steel ball groove 21, spacing spring 20 is compressed state, spacing spring 20's one end is supported and is leaned on spacing steel ball groove 21's tank bottom, the other end pops out spacing steel ball 19's out the notch of spacing steel ball groove 21, spacing steel ball 19 exposes spacing steel ball groove 21's notch's volume and is less than spacing steel ball 19's half, preferably, spacing steel ball 19 exposes spacing steel ball groove 21's notch's volume equals spacing steel ball 19's 1/3-3/7. In the orthopedic process, as the vertebral body rotating screw 5 rotates towards the reset position in the rotating reset track 7, when the limiting steel balls 19 of the combined limiting device are clamped into the limiting grooves 26 of the vertebral body fixing screw 5, the final limiting position is achieved, elastic acting force is applied to the limiting steel balls 19 through the limiting springs 20, the limiting steel balls 19 can be effectively prevented from falling out of the limiting grooves 26, the fastening reliability of the internal fixing system is improved, and therefore the orthopedic effect of the vertebral body is guaranteed.
When in implementation, the buckle 3 is firstly pre-installed into the buckle hole 11 through the buckle groove 10 of the second steel plate 2, and the second steel plate 2 is placed on an intact cone; then 2 centrum fixing screws 4 are placed in the second end of the second steel plate 2, namely 2 second centrum fixing screws are placed in the second screw holes of the second steel plate 2, the elastic structure of the buckle 3 is extruded in the process of placing the second screws, so that the elastic structure is extruded and deformed, after the second steel plate is placed in a preset position, the elastic structure is rebound clamped into the groove-shaped structure on the ball head of the second centrum fixing screw, so that screw withdrawal is prevented, and the connection and fixation operation of the second end of the second steel plate 2 and the cervical vertebrae is completed.
According to the previous cervical vertebra which has been bent sideways, the first steel plate 1 is rotated to the angle consistent with the pathological change vertebral body which needs to be bent sideways by taking the locking rod 6 as the center in advance, the vertebral body rotating screw 5 is inserted into the cervical vertebra which needs to be bent sideways through the rotating reset track 7 and the orthopedic hole 14, then the rotating reset track 7 which is arranged along the second steel plate 2 drives the bent sideways cervical vertebra to rotate and reset to the third screw hole of the first steel plate 1 and the first screw hole of the second steel plate 2 through the matching connection of a special side bending orthopedic surgical instrument and the reset driving interface 25 on the vertebral body rotating screw 5, namely, the limit steel ball 19 is clamped into the limit groove 26 of the vertebral body rotating screw 5, so as to achieve the aim of complete reset. Because the first steel plate 1 can rotate left and right by taking the locking rod 6 as the center, the cervical vertebra body which is deviated left or right can be corrected, the clinical practicability is greatly increased, and various operation demands are met.
After the side-bending cervical vertebrae are rotated and reset to a proper position, 2 vertebrae fixing screws 4 are installed at the first end of the second steel plate 2, the nail channel 15 of the second steel plate 2 and the nail channel 16 of the first steel plate 1 are placed into the cervical vertebrae with the side-bending shape being completed, namely, 2 first vertebrae fixing screws are installed in the first screw holes of the second steel plate 2, the elastic structure is deformed by extruding the elastic structure of the clamp buckle 3 in the process of installing the first screws, after the side-bending cervical vertebrae are installed at a preset position, the second screws penetrate through the first screw holes of the second steel plate and the third screw holes of the second steel plate 2 and are inserted into vertebrae, the elastic structure is rebound clamped into a groove-shaped structure on the ball head of the first vertebrae fixing screws, so that the screw nail backing-out is prevented, the connection fixing operation of the first end of the second steel plate 22 and the first steel plate and the cervical vertebrae is completed, and the orthopedic fixing connection of the first steel plate 1 and the second steel plate 2 and the vertebrae is completed, and the orthopedic fixing function of the cervical vertebrae is realized by completely overlapping the first steel plate 1 and the second steel plate 2 in top view as shown in fig. 3. Through the operation mode, the problems that traditional Chinese medicine massage, self-correction or Milko type neck ring treatment is not thorough and various adverse events are reported can be avoided, such as: fracture dislocation, high paraplegia, arterial injury (subintimal tear, hematoma, spasm), cervical spinal cord and nerve root injury, soft tissue injury, etc.
Compared with the prior art, the internal fixing system for the cervical vertebra lateral bending orthopedic cervical vertebra front steel plate has at least one of the following beneficial effects:
1. the nail way 15 of the second steel plate 2 is internally provided with the buckle 3, when the vertebral body fixing screw 4 is inserted into the nail way 15, the second steel plate is fixed on the intact cervical vertebra, and the purposes of locking and preventing the vertebral body fixing screw 4 from retreating are achieved through the elastic deformation of the buckle 3. Further, be equipped with the cell type structure 8 in centrum set screw 4 bulb position, cell type structure 8 is fixed in the nail way of first steel sheet 1 and second steel sheet 2 through the U-shaped shell fragment 9 of buckle 3, avoids centrum set screw 4 to deviate from, increases the fixed effect of connection between centrum set screw and the cervical vertebra simultaneously, guarantees the correction effect.
2. Through setting up first steel sheet 1 and second steel sheet 2 into the structure that rotates the connection, first steel sheet 1 and second steel sheet 2 pass through locking lever 6 and rotate to be connected, let first steel sheet rotate (the second steel sheet has accomplished fixedly) for the second steel sheet simultaneously, drive the centrum revolving screw that closely fixes with first steel sheet and the cervical vertebra side bending section that needs correction through special surgical instruments and reset to suitable position, spacing steel ball 19 card is to the spacing groove 26 of centrum revolving screw 5, as shown in fig. 2, the effect of cervical vertebra side bending orthopedic in the true sense has been realized, can correct the cervical vertebra centrum that leans left or leans right cervical, greatly increased clinical practicality, satisfy various operation demands.
3. The reset driving interface 25 of the vertebral body rotary screw 5 is provided with a bulge and a groove with oval geometric structures, the side wall of the reset driving interface 25 is parallel to the axis of the screw body, a driving angle of 0 degree is realized, radial force is eliminated, the driving performance of a special orthopedic tool is improved, and the safety coefficient for driving the vertebral body rotary screw is increased; meanwhile, the torque transmission device has larger torque transmission capacity, and ensures the reliability of a fixing system.
The foregoing description of the embodiments has been provided for the purpose of illustrating the general principles of the application, and is not meant to limit the scope of the application, but to limit the application to the particular embodiments, and any modifications, equivalents, improvements, etc. that fall within the spirit and principles of the application are intended to be included within the scope of the application.
Claims (15)
1. An internal fixation system for a cervical spine anterior approach steel plate for cervical spine lateral bending orthotics, comprising:
the first end of the second steel plate (2) is provided with a first screw hole, the second end of the second steel plate (2) is provided with a second screw hole, and a rotary reset track (7) is arranged between the first screw hole and the second screw hole;
the first end of the first steel plate (1) is provided with a third screw hole, the second end of the first steel plate (1) is connected with the second steel plate (2) through a shaft, and the axis of the shaft is perpendicular to the first steel plate (1) and the second steel plate (2) and is positioned between the rotary reset track (7) and the second screw hole; the first steel plate (1) is also provided with an orthopedic hole (14) corresponding to the rotary reset track (7);
a vertebral body rotation screw (5) inserted into a vertebra through the rotation reduction track (7) and the orthopedic hole (14);
a vertebral body fixation screw (4) comprising a first screw inserted into the vertebra through the first screw hole and the third screw hole and a second screw inserted into the vertebra through the second screw hole.
2. The anterior cervical plate internal fixation system for cervical lateral bending orthotics of claim 1, wherein the number of first screw holes, second screw holes and third screw holes is 2.
3. The internal fixation system for cervical vertebra lateral bending orthopedic cervical vertebra anterior steel plate according to claim 1, characterized in that the hole walls of the first screw hole and the second screw hole are both provided with an anti-drop structure, and the anti-drop structure presses the fitted vertebral body fixing screw (4) through elastic deformation.
4. The internal fixation system for cervical spine lateral bending orthopedic cervical spine steel plate according to claim 3, characterized in that the anti-falling structure is a buckle (3), the buckle (3) is provided with an elastic bulge;
the side end surfaces of the first end and the second end of the second steel plate (2) are respectively provided with a clamping groove (10),
the cell wall in buckle groove (10) is equipped with buckle hole (11), buckle hole (11) with screw hole intercommunication, buckle (3) pack into behind buckle groove (10), elastic bulge warp buckle hole (11) stretch into in first screw hole, the second screw hole.
5. The internal fixation system for cervical spine lateral bending orthopedic cervical spine anterior steel plate of claim 4 wherein the buckle (3) comprises a U-shaped spring (9), the elastic protrusion being provided on the U-shaped spring (9).
6. The internal fixation system for cervical spine anterior approach steel plate for cervical spine lateral curvature according to claim 3, characterized in that the periphery of the ball head of the vertebral body fixation screw (4) is provided with a groove structure (8);
the anti-falling structure can rebound and be clamped into the groove structure (8) under the extrusion of the vertebral body fixing screw (4).
7. The anterior cervical plate internal fixation system for cervical lateral bending orthotics of claim 6 wherein the channel structure (8) comprises a first channel and a second channel and the resilient protrusions comprise a first stage protrusion and a second stage protrusion.
8. The internal fixation system for cervical spine, anterior cervical plate for cervical lateral curvature, according to claim 1, characterized in that the shaft is a locking bar (6);
the second steel plate (2) is provided with a first rotary hole (12), and the first rotary hole (12) is positioned between the rotary reset track (7) and the second screw hole;
a second rotary hole (13) is formed in the second end of the first steel plate (1), and a riveting groove (18) is formed in the bottom of the second rotary hole (13);
the locking rod (6) is riveted in the riveting groove (18) through the first rotary hole (12) and the second rotary hole (13), and the first steel plate (1) is rotationally connected with the second steel plate (2).
9. The internal fixation system for cervical spine lateral bending orthopedic cervical spine anterior steel plate according to claim 8, characterized in that the riveted end (17) of the locking bar (6) is a hollow cylinder structure.
10. The internal fixation system for cervical spine lateral bending orthopedic cervical spine plate according to claim 8, characterized in that the rotational return rail (7) is an oblong hole, which is arranged around the hole center of the second rotational hole (13).
11. The internal fixation system for the cervical vertebra lateral bending orthopedic cervical vertebra anterior steel plate according to claim 10, characterized in that the rotary reset rail (7) is provided with a limit assembly, the outer circumferential wall of the ball head of the vertebral body rotary screw (5) is provided with a limit groove (26), and the limit assembly can be clamped into the limit groove (26).
12. The internal fixation system for cervical vertebra lateral bending orthopedic cervical vertebra anterior steel plate of claim 11, wherein the limit component is an elastic protrusion fixedly arranged on the rail wall of the rotary reset rail (7).
13. The internal fixation system for cervical spine lateral curvature cervical spine anterior approach steel plate of claim 11, wherein the stop assembly comprises a stop spring (20) and a stop steel ball (19);
the track wall of the rotary reset track (7) is provided with a limit steel ball groove (21), and the limit spring (20) and the limit steel ball (19) are arranged in the limit steel ball groove (21); one end of the limiting spring (20) is propped against the bottom of the limiting steel ball groove (21), and the other end of the limiting spring ejects part of the limiting steel ball (19) from the notch of the limiting steel ball groove (21).
14. The internal fixation system for the anterior cervical plate for cervical lateral bending orthotics according to claim 1, wherein the ball head of the vertebral body rotating screw (5) is provided with a reset driving interface (25), the side wall of the reset driving interface (25) is parallel to the axis of the nail body, and the side wall of the reset driving interface (25) is provided with an elliptic cylinder protrusion (251).
15. The internal fixation system for cervical spine, lateral curvature orthopedic cervical spine, anterior steel plate of claim 14, characterized in that the body of the vertebral body rotation screw (5) is a double-thread structure 7.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210204161.7A CN114587551B (en) | 2022-03-03 | 2022-03-03 | Internal fixing system for cervical vertebra lateral bending orthopedic cervical vertebra front path steel plate |
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| CN202210204161.7A CN114587551B (en) | 2022-03-03 | 2022-03-03 | Internal fixing system for cervical vertebra lateral bending orthopedic cervical vertebra front path steel plate |
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| CN114587551A (en) | 2022-06-07 |
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