CN111772754A - Pillow neck fixation and fusion system - Google Patents
Pillow neck fixation and fusion system Download PDFInfo
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- CN111772754A CN111772754A CN202010760747.2A CN202010760747A CN111772754A CN 111772754 A CN111772754 A CN 111772754A CN 202010760747 A CN202010760747 A CN 202010760747A CN 111772754 A CN111772754 A CN 111772754A
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- occipital
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- wing plate
- connecting rod
- screw
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- 230000004927 fusion Effects 0.000 title claims abstract description 19
- 210000000103 occipital bone Anatomy 0.000 claims abstract description 22
- 210000000988 bone and bone Anatomy 0.000 claims abstract description 6
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000009434 installation Methods 0.000 abstract description 7
- 210000003484 anatomy Anatomy 0.000 abstract description 3
- 230000002980 postoperative effect Effects 0.000 abstract description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 210000003625 skull Anatomy 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 210000004220 fundus oculi Anatomy 0.000 description 1
- 210000003128 head Anatomy 0.000 description 1
- 210000001154 skull base Anatomy 0.000 description 1
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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
- A61B17/7055—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant connected to sacrum, pelvis or skull
-
- 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
- A61B17/7056—Hooks with specially-designed bone-contacting part
-
- 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
- A61B17/7058—Plates mounted on top of bone anchor heads or shoulders
-
- 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
- A61B2017/7073—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant with intervertebral connecting element crossing an imaginary spinal median surface
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- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Neurology (AREA)
- Surgery (AREA)
- Heart & Thoracic Surgery (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Neurosurgery (AREA)
- Surgical Instruments (AREA)
Abstract
The invention belongs to the technical field of medical instruments, and particularly discloses an occipital cervical fixation and fusion system which comprises an epistropheus pedicle screw, an occipital plate, a posterior cervical transverse connection and a connecting rod; the occipital plate comprises a central line plate, a left wing plate and a right wing plate which are connected into a whole, the left wing plate and the right wing plate are symmetrically arranged at two sides of the central line plate), a sliding groove and a side wing fixing hole are formed on the left wing plate and the right wing plate, and an occipital fixing hole is formed on the central line plate; when the vertebra dentata pedicle screw is used, the vertebra dentata pedicle screw is placed in bone tissue of a dentata of a patient, the occipital bone plate is fixed on an occipital bone of the patient, the vertebra dentata pedicle screw is connected with the occipital bone plate through the connecting rod, and the connecting rods on the two sides are transversely connected through a posterior cervical path. The occipital plate adapts to the anatomy characteristics of the occipital bone, and has the advantages of fixing the midline and the lateral wings, dispersing stress and preventing looseness; the relative positions of the connecting rods on the two sides can be adjusted to enable the connecting rods to be parallel by the aid of the function of the sliding grooves, stress conduction is facilitated, installation operation of the connecting rods is simplified, and transverse connection is facilitated. The directional pedicle screw is placed in the axis vertebra, so that the reduction is facilitated and the postoperative nail tail swing is reduced.
Description
Technical Field
The invention belongs to the technical field of medical instruments, and relates to a occipital cervical fixation and fusion system.
Background
The upper cervical vertebra needs the reduction and fixation operation treatment of the short segment of the neck with moving occipital due to the atlantoaxial deformity, the atlantoaxial dislocation and the like, and the existing occipital cervical fixation system mainly adopts a nail rod-occipital plate system. Depending on the occipital anatomy, the occipital protuberance on the midline is bony thick and the occipital scales on both sides are thinner. Therefore, the screw fixing position needs to take into account that the two parts simultaneously disperse the reset stress to prevent the screw from loosening. The following problems exist in clinical use: 1. the problem of simultaneous fixation of the midline and the lateral side is not solved, and the occipital bone screw is easy to loosen under poor bone or strong restoring force. 2. Cervical vertebra screw base and occipital bone board set screw are apart from the midline distance and are not in a sagittal plane, are inverted V-shaped structure after the connective bar installation, need adjust the angle of preflex of connective bar repeatedly simultaneously, and the connective bar is difficult for the installation.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention aims to provide an occipital cervical fixation and fusion system, which solves the problems of looseness of occipital screws and difficulty in installation of connecting rods.
The invention is realized by the following technical scheme:
an occipital cervical fixation and fusion system comprises an axis vertebral pedicle screw, an occipital plate, a cervical posterior transverse connection and a connecting rod;
the occipital plate comprises a central line plate, a left wing plate and a right wing plate which are connected into a whole, the left wing plate and the right wing plate are symmetrically arranged at two sides of the central line plate, sliding grooves and side wing fixing holes are formed in the left wing plate and the right wing plate, and occipital fixing holes are formed in the central line plate;
when the vertebra dentata pedicle screw is used, the vertebra dentata pedicle screw is implanted into bone tissue of a dentata of a patient, the occipital bone plate is fixed on an occipital bone of the patient, the vertebra dentata pedicle screw is connected with the occipital bone plate through the connecting rod, and the connecting rods on the two sides are transversely connected through a posterior cervical path.
Furthermore, the back of the neck is horizontal including connecting rod and fastener, is equipped with the couple that links up the connective bar on the fastener, sets up the through-hole that runs through the connecting rod and is used for locking the screw and the screw of connecting rod on the fastener.
Furthermore, the connecting rod is connected with the occipital plate through a connecting assembly, the connecting assembly comprises a screw with a flange cap and an anti-rotation gasket, the screw with the flange cap comprises a base and two tail arms fixed on the base, and two grooves corresponding to the connecting rod are formed in the anti-rotation gasket;
when the anti-rotation gasket is used, the base is arranged below the sliding groove, the two tail arms extend out of the sliding groove, the anti-rotation gasket is sleeved on the outer sides of the two tail arms, and the connecting rod is arranged between the two tail arms and clamped in the groove on the anti-rotation gasket.
Furthermore, the tail arm is an arc-shaped rod, and the inner wall of the rod is provided with internal threads.
Furthermore, the dentata pedicle screw adopts a directional/universal double-thread screw, and the rear part 1/3-1/2 of the screw body is of a double-thread structure.
Furthermore, the included angle between the left wing plate and the right wing plate is 100-120 degrees.
Furthermore, the left wing plate and the right wing plate are curved surfaces, and the included angle between the left wing plate and the right wing plate and the central line plate is 30-60 degrees.
Furthermore, the middle line board, the left wing plate and the right wing plate form an inverted Y shape.
Furthermore, occipital bone fixing nails are arranged in the side wing fixing holes and the occipital bone fixing holes.
Compared with the prior art, the invention has the following beneficial technical effects:
the invention discloses an occipital cervical fixation and fusion system, which comprises an axis vertebral pedicle screw, an occipital plate, a cervical posterior transverse connection and a connecting rod; the occipital plate comprises a central line plate, a left wing plate and a right wing plate which are connected into a whole, the left wing plate and the right wing plate are provided with a chute and a side wing fixing hole, the central line plate is provided with an occipital fixing hole, the occipital plate adapts to the anatomy characteristics of the occipital bone, the fixation of the central line and the side wing is considered, the stress is dispersed, and the looseness is prevented; the relative positions of the connecting rods on the two sides can be adjusted to enable the connecting rods to be parallel by the aid of the function of the sliding grooves, stress conduction is facilitated, installation operation of the connecting rods is simplified, and transverse connection is facilitated.
Further, the back of the neck is horizontal including connecting rod and fastener, and is fixed with connective bar and connecting rod through the fastener, and the connecting rod is taut with both sides connective bar on horizontal, and the fine improvement of transverse connection is bent and is stretched, the fixed postoperative stability of upper cervical vertebra that rotation function is stronger, is favorable to planting the bone and fuses.
Further, the connective bar passes through coupling assembling and is connected with the occipital bone board, and coupling assembling includes flanged cap screw and prevents the spin-on gasket, can slide in the spout before flanged cap screw is not locked to make occipital bone end connective bar adapt to axis end connective bar position, tend to parallel level until head and the tail end connective bar, the stress conduction of being convenient for, simplify connective bar installation operation, do benefit to and install the cross-linking additional.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the occipital plate structure of the present invention;
FIG. 3 is a schematic view of a flanged cap screw configuration of the present invention;
FIG. 4 is a schematic structural view of the anti-spin gasket of the present invention;
FIG. 5 is a schematic view of the construction of the fastener of the present invention;
fig. 6 is a state diagram of the present invention in use.
Wherein: 1 is an axis pedicle screw, 2 is an occipital plate, 3 is a connecting rod, 4 is a connecting rod, 5 is a clamping piece, 6 is a screw with a flange cap, and 7 is an anti-rotation gasket;
21 is a central line board, 22 is a left wing plate, 23 is a right wing plate, 24 is a sliding groove, 25 is a side wing fixing hole, and 26 is an occipital bone fixing hole;
the hook 51 is a hook, and the screw 52 is a screw; 61 is a base, 62 is a tail arm, and 71 is a groove.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings:
as shown in figure 1, the occipital cervical fixation fusion system comprises an axis pedicle screw 1, an occipital bone plate 2, a cervical posterior transverse connection rod 3; as shown in fig. 2, the occipital plate 2 comprises a central line plate 21, a left wing plate 22 and a right wing plate 23 which are connected into a whole, the left wing plate 22 and the right wing plate 23 are symmetrically arranged at two sides of the central line plate 21, and the central line plate 21, the left wing plate 22 and the right wing plate 23 form an inverted "Y" shape; the left wing plate 22 and the right wing plate 23 are provided with a sliding groove 24 and a side wing fixing hole 25, and the middle plate 21 is provided with an occipital bone fixing hole 26; occipital fixation nails are placed in the lateral wing fixation holes 25 and the occipital fixation holes 26. As shown in figure 6, when in use, the dentata pedicle screw 1 is placed in the bone tissue of the dentata of a patient, the occipital plate 2 is installed on the occipital bone of the patient, the dentata pedicle screw 1 is connected with the occipital plate 2 through the connecting rod 3, and the connecting rods 3 at the two sides are transversely connected through the posterior cervical path.
The posterior cervical transverse connection comprises a connecting rod 4 and a clamping piece 5, as shown in fig. 5, a hook 51 for connecting the connecting rod 3, a through hole penetrating through the connecting rod 4, a screw hole for locking the connecting rod 4 and a screw 52 are arranged on the clamping piece 5. After the direction of the connecting rod 3 is adjusted, the screw 52 is screwed into the screw hole to lock the connecting rod 4 and the clamping piece 5. Fastener 5 is for taking couple 51 cuboid structure, connects both sides connective bar 3 through connecting rod 4 through controlling two fasteners 5, improves internal fixation frame stability.
Preferably, the included angle between the left wing plate 22 and the right wing plate 23 is 100-120 degrees, the left wing plate 22 and the right wing plate 23 are curved surfaces, and the included angle between the left wing plate 22 and the right wing plate 23 and the median plate 21 is 30-60 degrees, so that the occiput plate 2 is more easily attached to the occiput.
The connective bar 3 is connected with the occipital plate 2 through a connection assembly, the connection assembly comprises a screw 6 with a flange cap and an anti-rotation gasket 7, as shown in fig. 3, the screw 6 with the flange cap comprises a base 61 and two tail arms 62 fixed on the base 61, the tail arms 62 are similar to pedicle screw tails in structure, and the tail arms 62 are arc-shaped rods with internal threads.
As shown in fig. 4, the anti-rotation gasket 7 is provided with two grooves 71 corresponding to the connecting rods 3; when the anti-rotation device is used, the base 61 is arranged below the sliding groove 24, the two tail arms 62 extend out of the sliding groove 24, the anti-rotation gasket 7 is sleeved on the outer sides of the two tail arms 62, the connecting rod 3 is arranged between the two tail arms 62 and is matched with a groove in the anti-rotation gasket 7, and then the tail arms 62 are locked by jackscrews. The connecting rod 3 for connecting the cervical vertebra is connected with the occipital plate 2 in the sliding groove 24 through a screw 6 with a flange cap, and the tail arm 62 passes through the sliding groove 24 and then is locked through the anti-rotation gasket 7 and the connecting rod 3 by means of a screw jackscrew. The bolt 6 with the flange cap can slide in the sliding groove 24 before being locked, so that the occipital end connecting rod 3 is adapted to the position of the axis end connecting rod 3 until the head end connecting rod 3 and the tail end connecting rod 3 are parallel to each other, the mechanical conduction is facilitated, the repeated pre-bending of the connecting rod 3 is reduced, the installation of the posterior cervical transverse connection is facilitated, and meanwhile, the convenience is provided for the placing of the directional bolt into the axis.
The dentata pedicle screw 1 adopts a directional/universal double-thread screw, and the rear part 1/3-1/2 of the screw body is of a double-thread structure, so that the anti-pulling force of the screw is increased. During reduction, a directional screw is recommended to be selected to improve the reduction capability and reduce the reduction loss after the operation.
For example, the skull base depression accompanied by atlanto-occipital fusion is firstly placed into the dentalis pedicle screws 1 on both sides of the axis, and then the caudal connecting rod 3 is installed and locked. The head-side connector rod 3 is then installed into the flanged cap screw 6 of the occipital plate 2 and screwed into the jackscrew, but not locked, so that the flanged cap screw 6 can slide within the slide slot 24 to facilitate adjustment of the relative position of the connector rod 3. Under the traction state of the skull, an operator and an assistant cooperate to press the pre-bent connecting rod 3 and the occipital plate 2 to the corresponding position of the occipital bone, and the middle line and the lateral occipital nail are sequentially placed in. After the position of the connecting rod 3 in the sliding groove 24 is adjusted, the jackscrew is locked, and the locking can be realized by means of the occipital nail which is placed around the sliding groove 24. For difficult-to-restore dislocation, the anterior joint is required to be loosened if necessary, and then the posterior joint is installed for internal fixation after skull traction restoration.
The occipital cervical fixation and fusion system has simple structure and strong compatibility, and is suitable for cases of cranium fundus oculi depression, atlantoaxial dislocation, atlantoaxial deformity and other diseases requiring occipital cervical (occipital) short-segment fixation.
While the embodiments of the present invention have been described in detail with reference to the drawings, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art, and the scope of the present invention is within the scope of the claims.
Claims (9)
1. An occipital cervical fixation and fusion system is characterized by comprising an axis vertebral pedicle screw (1), an occipital bone plate (2), a cervical posterior transverse connection rod and a connecting rod (3);
the occipital plate (2) comprises a central line plate (21), a left wing plate (22) and a right wing plate (23) which are connected into a whole, the left wing plate (22) and the right wing plate (23) are symmetrically arranged at two sides of the central line plate (21), a sliding groove (24) and a side wing fixing hole (25) are formed in the left wing plate (22) and the right wing plate (23), and an occipital bone fixing hole (26) is formed in the central line plate (21);
when the vertebra dentata pedicle screw is used, the vertebra dentata pedicle screw (1) is implanted into bone tissue of a dentata of a patient, the occipital plate (2) is fixed on an occipital bone of the patient, the vertebra dentata pedicle screw (1) is connected with the occipital plate (2) through the connecting rod (3), and the connecting rods (3) at two sides are transversely connected through a posterior cervical path.
2. The occipital cervical fixation and fusion system according to claim 1, wherein the posterior cervical cross-connection comprises a connecting rod (4) and a clamping piece (5), a hook (51) for connecting the connecting rod (3) is arranged on the clamping piece (5), and a through hole penetrating through the connecting rod (4) and a screw hole and a screw (52) for locking the connecting rod (4) are arranged on the clamping piece (5).
3. The occipital cervical fixation fusion system according to claim 1, wherein the connecting rod (3) is connected with the occipital plate (2) through a connecting assembly, the connecting assembly comprises a flanged cap screw (6) and an anti-rotation gasket (7), the flanged cap screw (6) comprises a base (61) and two tail arms (62) fixed on the base (61), and the anti-rotation gasket (7) is provided with two grooves (71) corresponding to the connecting rod (3);
during the use, base (61) set up in spout (24) below, and two trailing arms (62) stretch out spout (24), and two trailing arms (62) outside are established to the gasket (7) cover of preventing revolving, and connective bar (3) are installed between two trailing arms (62) and are blocked in preventing the recess on revolving gasket (7).
4. The occipital cervical fixation fusion system of claim 3 wherein the tail arm (62) is an arcuate rod having internal threads on the inner wall.
5. The occipital cervical fixation fusion system of claim 1 wherein the dentalis pedicle screw (1) is a directional/universal double-threaded screw and the post-screw 1/3-1/2 is a double-threaded structure.
6. The occipital cervical fixation fusion system of claim 1 wherein the angle between the left and right wings (22, 23) is 100 ° to 120 °.
7. The occipital cervical fixation fusion system of claim 1, wherein the left wing plate (22) and the right wing plate (23) are curved and form an angle of 30-60 ° with the median plate (21).
8. The occipital cervical fixation fusion system of claim 1, wherein the median plate (21), the left wing plate (22) and the right wing plate (23) form an inverted "Y" shape.
9. The occipital cervical fixation fusion system of claim 1, wherein the lateral wing fixation holes (25) and the occipital fixation holes (26) have occipital fixation nails installed therein.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010760747.2A CN111772754A (en) | 2020-07-31 | 2020-07-31 | Pillow neck fixation and fusion system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010760747.2A CN111772754A (en) | 2020-07-31 | 2020-07-31 | Pillow neck fixation and fusion system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111772754A true CN111772754A (en) | 2020-10-16 |
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ID=72766159
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010760747.2A Withdrawn CN111772754A (en) | 2020-07-31 | 2020-07-31 | Pillow neck fixation and fusion system |
Country Status (1)
| Country | Link |
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| CN (1) | CN111772754A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114129308A (en) * | 2021-11-15 | 2022-03-04 | 中国人民解放军空军军医大学 | 3D prints fixed integration back way neck pillow and fuses false body |
-
2020
- 2020-07-31 CN CN202010760747.2A patent/CN111772754A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114129308A (en) * | 2021-11-15 | 2022-03-04 | 中国人民解放军空军军医大学 | 3D prints fixed integration back way neck pillow and fuses false body |
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| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20201016 |
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| WW01 | Invention patent application withdrawn after publication |