CN203138664U - Inner fixing system of axis vertebral plate hook provided with inner fixed core and atlas pedicle screw - Google Patents
Inner fixing system of axis vertebral plate hook provided with inner fixed core and atlas pedicle screw Download PDFInfo
- Publication number
- CN203138664U CN203138664U CN 201320110289 CN201320110289U CN203138664U CN 203138664 U CN203138664 U CN 203138664U CN 201320110289 CN201320110289 CN 201320110289 CN 201320110289 U CN201320110289 U CN 201320110289U CN 203138664 U CN203138664 U CN 203138664U
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- vertebral plate
- fixing system
- axis
- fixed core
- plate hook
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Abstract
The utility model relates to the field of medical instruments and provides an inner fixing system of an axis vertebral plate hook provided with an inner fixed core and an atlas pedicle screw. The inner fixing system is composed of the axis vertebral plate hook (1), the atlas pedicle screw (2) and a connecting bar (3), wherein the axis vertebral plate hook (1) is composed of a vertebral plate hook body (11), a nut (12) and the inner fixed core (13), a lifting groove (111) is formed in the upper end of the vertebral plate hook body (11), and the inner fixed core (13) is arranged on one side, close to an opening of a hook (112), of the vertebral plate hook body (11). The inner fixing system is simple in structure and convenient to use, the inner fixing system is complementary with an existing rear atlantoaxial inner fixing system, and the inner fixing system provides a practical and effective inner fixing technology for treatandcure of atlantoaxial dislocation with axis bony structure abnormality, vertebral artery high-position crossing, bone rarefaction and other conditions.
Description
Technical field
This utility model relates to medical instruments field, relates in particular to a kind of lamina of axis hook and atlas cervical arc root screw internal fixing system that is applicable to atlantoaxial dislocation.
Background technology
Illness such as odontoid fracture, rheumatic arthritis or ankylosing spondylitis can cause atlantoaxial dislocation, shakiness, even can cause the persistence compressing of ventral side of spinal cord.Non-operative treatment can not make articulatio atlantoepistrophica obtain effective mechanical stability, and the spinal cord injury that can cause carrying out property to increase the weight of.Therefore, in case clarify a diagnosis, it is that treatment is crucial that positive surgical operation is rebuild extensive region dentata stability.
The stability of rebuilding extensive region dentata complex to spinal surgeons be have challenging.The row neck way of escape articulatio atlantoepistrophica bone-graft fusion internal fixation that resets is a kind of effective Therapeutic Method simple to operate, clinical.But several modus operandis commonly used at present have different pluses and minuses at aspects such as fusion rate of bone graft, biomechanical stability and clinical effectiveness.Main modus operandi has: (1) pillow neck fusion, and as a kind of traditional posterior approach method easy operating and good stability, but it has limited the activity of cranium cervical region; In addition, continue the compressing ventral side of spinal cord and cause symptom to fail alleviation person's prominent excision of ability to speak of passing through of still needing if tooth is prominent.Thereby, a kind of remedial measure during at present only as other operation method failures.Technology such as (2) extensive region dentata fixation with steel wire (Gallie steel wire and Brooks steel wire), Halifax interlaminar clamp and Apofix vertebral lamina hook, the biomechanical stability that provides is limited, the dentata joint, extensive region that can't reset in the art, the ventral side of spinal cord pressurized also can't be removed; And can not obtain at once or long-term stability, fusion rate of bone graft is on the low side, seldom adopts at present.(3) through articulatio atlantoepistrophica screw fixation, can control the rotation of extensive region dentata the most effectively, bend and stretch the stability with lateroflexion, but it is big that this specification requirement advances to follow closely angle, requires articulatio atlantoepistrophica to reach the anatomical reduction state before screw graft failure, the vertebrarterial danger of damage and art are arranged.(4) extensive region dentata pedicle screw technology lifts and resets but also can obtain to carry out in strong extensive region dentata stability and the art extensive region dentata, but can not be used for having a vertebral artery high position patient of vertebral artery and bone anatomic abnormalities such as to ride.(5) lamina of axis screw technology can be used as the vertebral artery high position person's of riding means to save the situation, but screw has from side and far-end and wears out the risk that vertebral plate causes spinal cord injury.Especially for osteoporotic patient, the risk that screw is extracted is higher.
This shows, modus operandi fixing in the dentata bone-graft fusion of way of escape extensive region is various, but still do not have at present a kind of safe, reliable and effectively and can form fixed form in the dentata of extensive region dentata internal fixation system with the atlas pedicle screw, especially have dentata bone textural anomaly, a vertebral artery high position to ride and during situation such as osteoporosis as the patient.
The utility model content
The purpose of this utility model is to provide a kind of safe and effective lamina of axis hook and atlas cervical arc root screw internal fixing system.
Goal of the invention of the present utility model is achieved through the following technical solutions:
This utility model provides a kind of lamina of axis hook and atlas cervical arc root screw internal fixing system with interior fixed core, and this internal fixation system is made up of lamina of axis hook, atlas pedicle screw and pitman; Lamina of axis hook wherein is made up of vertebral plate coupler body, nut and interior fixed core, and the upper end of vertebral plate coupler body is provided with and lifts groove, and the vertebral plate coupler body has fixed core in a piece near a side of crotch opening, is provided with the hexagon inner chamber in the nut; Pitman passes the lamina of axis hook, passes the atlas pedicle screw again.
Described nut hollow, the inner chamber cross section is hexagon, and the interior hexagonal spiral shell cutter of available coupling screws;
Fixed core can be up and down in described, and it can embed the outside cortical bone of lamina of axis after nut is with pitman locking, thereby has played the fixedly effect of vertebral lamina hook.
During use, after the extensive region dentata resets in the Rhizoma Atractylodis Macrocephalae, insert the atlas pedicle screw and put vertebral lamina hook in the lamina of axis lower edge; The big young pathbreaker's pitman of drop according to extensive region dentata anterior dislocation carries out suitable prebuckling, and pitman is passed the U-shaped groove of vertebral lamina hook afterbody, and nut is locked; Be pressed into the nail tail U-shaped groove of atlas pedicle screw and suitably locking with lifting the pitman of pincers with perk, insert the pitman of offside with method.Finishing arch of posterior atlas and spinous process of axis and vertebral plate implant bed are implanted between arch of posterior atlas and the lamina of axis spinous process both sides pressurization back locking, broken bone piece bone grafting on every side with pruning suitable autologous iliac bone.So far, finish atlas reset and extensive region dentata bone-graft fusion in fixing.
This utility model is simple in structure, easy to use, complement one another with existing way of escape extensive region dentata internal fixation system, for be associated with dentata bone textural anomaly, a vertebral artery high position rides and the treatment of the atlantoaxial dislocation of situation such as osteoporosis provides a kind of effective interior technique for fixing.
The utility model has the advantages that:
1, the size to the vertebral plate of dentata does not have strict requirement, is particularly useful for inserting dentata pedicle screw or vertebral plate screw person, and the vertebrarterial risk of not damaged.
2, parameters such as screw material, diameter, length are identical with existing atlas pedicle screw, and fixed core made it vertebral lamina hook can be fixed in lamina of axis in vertebral lamina hook was improved, adds, and was more conducive to carry out lift in the art dentata joint, extensive region that resets; In addition, taken full advantage of existing technical method, reduced the research and development time, can comparatively fast be applied to clinical.
Description of drawings
Fig. 1 is the structural representation of internal fixation system of the present utility model;
Fig. 2 is the structural representation of lamina of axis hook of the present utility model;
Fig. 3 is the structural representation of the nut of lamina of axis hook of the present utility model;
Wherein: lamina of axis hook 1, vertebral plate coupler body 11, nut 12, interior fixed core 13, lift groove 111, crotch 112, hexagon inner chamber 121; Atlas pedicle screw 2; Pitman 3.
The specific embodiment
Now in conjunction with the embodiments and accompanying drawing, this utility model is further described, but enforcement of the present utility model is not limited in this.
Embodiment 1:
As shown in Figures 1 to 3, this internal fixation system is made up of lamina of axis hook 1, atlas pedicle screw 2 and pitman 3; Lamina of axis hook 1 wherein is made up of vertebral plate coupler body 11, nut 12 and interior fixed core 13, and the upper end of vertebral plate coupler body 11 is provided with and lifts groove 111, and vertebral plate coupler body 11 has fixed core 13 in a piece near a side of crotch 112 openings, is provided with hexagon inner chamber 121 in the nut 12; Pitman 3 passes lamina of axis hook 1, passes atlas pedicle screw 2 again.
Nut hollow, the inner chamber cross section is hexagon, and the interior hexagonal spiral shell cutter of available coupling screws; The big young pathbreaker's pitman of drop according to extensive region dentata anterior dislocation carries out suitable prebuckling, and pitman is passed the U-shaped groove of vertebral lamina hook, nut is screwed again; Vertebral lamina hook near a side of crotch opening have one piece can be up and down interior fixed core, it can embed the outside cortical bone of lamina of axis after nut is with pitman locking, thereby has played the fixedly effect of vertebral lamina hook.Lift U-shaped groove and the locking nut that pitman is pressed into behind the atlas pedicle screw its head of a nail with lifting pincers, lifting of atlas anterior dislocation reset.
More than show and described ultimate principle of the present utility model, principal character and advantage of the present utility model.The technical staff of the industry should understand; this utility model is not restricted to the described embodiments; that describes in above-described embodiment and the description just illustrates principle of the present utility model; this utility model also has various changes and modifications under the prerequisite that does not break away from this utility model spirit and scope, and these changes and improvements all fall in claimed this utility model scope.The claimed scope of this utility model is defined by appending claims and equivalent thereof.
Claims (1)
1. lamina of axis hook and the atlas cervical arc root screw internal fixing system of the interior fixed core of band is characterized in that this internal fixation system is made up of lamina of axis hook (1), atlas pedicle screw (2) and pitman (3); Lamina of axis hook (1) wherein is made up of vertebral plate coupler body (11), nut (12) and interior fixed core (13), the upper end of vertebral plate coupler body (11) is provided with and lifts groove (111), vertebral plate coupler body (11) has fixed core in a piece (13) near a side of crotch (112) opening, is provided with hexagon inner chamber (121) in the nut (12); Pitman (3) passes lamina of axis hook (1), passes atlas pedicle screw (2) again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320110289 CN203138664U (en) | 2013-03-12 | 2013-03-12 | Inner fixing system of axis vertebral plate hook provided with inner fixed core and atlas pedicle screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320110289 CN203138664U (en) | 2013-03-12 | 2013-03-12 | Inner fixing system of axis vertebral plate hook provided with inner fixed core and atlas pedicle screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203138664U true CN203138664U (en) | 2013-08-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320110289 Expired - Fee Related CN203138664U (en) | 2013-03-12 | 2013-03-12 | Inner fixing system of axis vertebral plate hook provided with inner fixed core and atlas pedicle screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203138664U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103181816A (en) * | 2013-03-12 | 2013-07-03 | 中国人民解放军第二军医大学 | Dentata laminar hook with inner fixed core |
-
2013
- 2013-03-12 CN CN 201320110289 patent/CN203138664U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103181816A (en) * | 2013-03-12 | 2013-07-03 | 中国人民解放军第二军医大学 | Dentata laminar hook with inner fixed core |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130821 Termination date: 20160312 |