CN201814644U - Lumbar vertebra posterior internal fixation device - Google Patents
Lumbar vertebra posterior internal fixation device Download PDFInfo
- Publication number
- CN201814644U CN201814644U CN2010205759082U CN201020575908U CN201814644U CN 201814644 U CN201814644 U CN 201814644U CN 2010205759082 U CN2010205759082 U CN 2010205759082U CN 201020575908 U CN201020575908 U CN 201020575908U CN 201814644 U CN201814644 U CN 201814644U
- Authority
- CN
- China
- Prior art keywords
- screw
- connecting rod
- pedicle
- lumbar vertebra
- fixation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Surgical Instruments (AREA)
- Prostheses (AREA)
Abstract
The utility model relates to a lumbar vertebra posterior internal fixation device, which comprises pedicle screws, a positioning block, positioning rings, a screw and a connecting rod, wherein the pedicle screws are implanted in pediculus arcus vertebrae of vertebra of patient in order to play the role of anchoring and provide three-dimensional correction and firm internal fixation, the positioning block is positioned between the pedicle screws and the screw to be bridge arc-shaped, and the positioning block creates slide with the connecting rod owing to smooth internal surface, the positioning rings are positioned at two ends of the fixation device and are used for preventing lumbar vertebra from excessive flexion and distraction, the screw is positioned at the upper part of the pedicle screw and used for fixing the positioning block and the connecting rod, and the connecting rod is used for the connection with various pedicle screws so as to play the role of fixation. The device of the utility model has the characteristics that: long segment spine dynamic internal fixation is adopted for dislocation-type lumbar vertebra fracture, which can not only guarantee effective fixation strength to recover the stability of spine, but also prevent degenerative diseases on fixed segments and adjacent segments so as to protect intervertebral disc tissue and favor postoperative rehabilitation.
Description
Technical field
This utility model relates to a kind of lumbar vertebral posterior inner fixing device, belongs to the orthopedic medical device technical field.
Background technology
At present, lumbar vertebra fracture for the dislocation type, the pedicle of vertebral arch internal fixation treatment that carries out long segment is by everybody confessed treatment means, but for behind the long segment internal fixation, the activeness of lumbar vertebra has been subjected to very big restriction and has easily produced the degenerated disease of closing on the joint.If adopt short segment to fix, it is not enough to be easy to generate constant intensity, danger such as the loosening and fixing failure of internal fixation.
The utility model content
The problem that this utility model exists at above-mentioned prior art and a kind of lumbar vertebral posterior inner fixing device is provided.Pedicle nail is implanted in the patient vertebral body pedicle of vertebral arch, played anchorage effect, three-dimensional correction and strong internal fixation can be provided.
The technical solution of the utility model is as follows:
A kind of lumbar vertebral posterior inner fixing device, it is characterized in that: it comprises pedicle nail, locating piece, locating ring, screw and connecting rod, and locating piece becomes bridge arch shape profile between pedicle screw and screw, inner face is smooth, produce slip with connecting rod, locating ring is positioned at the two ends of fixed apparatus, is used to prevent that lumbar vertebra from producing hyperflexion and strutting, screw is positioned at pedicle nail top, be used for fixing locating piece and connecting rod, connecting rod is used to connect each pedicle screw, plays fixation.
This utility model lumbar vertebral posterior inner fixing device its advantage compared with the prior art is: the fixing of long segment is provided; guaranteed constant intensity; allow up and down to slide between two pedicle screws and the connecting rod; allow vertebral body sagittal plain and axially movable; do not allow the activity of vertebral body side; avoided normal intercalated disc tissue and joint that the degenerated disease takes place, protection intercalated disc tissue is beneficial to postoperative rehabilitation.
Description of drawings
Fig. 1 is the structural representation of this utility model pedicle nail.
Fig. 2 is the structural representation of this utility model locating piece.
Fig. 3 is the structural representation of this utility model locating ring.
Fig. 4 is the structural representation of this utility model screw.
Fig. 5 is the structure cutaway view of this utility model pedicle nail.
Fig. 6 is that the A-A of Fig. 4 is to the structure cutaway view.
Fig. 7 is that the B-B of Fig. 1 is to the structure cutaway view.
Fig. 8 is that the C of Fig. 1 is to structural representation.
Fig. 9 is that the D-D of Fig. 1 is to the structure cutaway view.
Among the figure, 1, pedicle nail, 2, locating piece, 3, locating ring, 4, screw, 5, connecting rod.
The specific embodiment
Describe in detail this utility model below in conjunction with drawings and Examples.
Embodiment 1
As Fig. 1-shown in Figure 4, this utility model lumbar vertebral posterior inner fixing device is made up of pedicle nail 1, locating piece 2, locating ring 3, screw 4 and connecting rod 5, pedicle nail 1 is screwed in the vertebral body pedicle of vertebral arch, plays anchorage effect, and three-dimensional correction and strong internal fixation are provided.Locating piece 2 becomes " bridge arch " shape profile between pedicle screw and screw, inner face is smooth, can produce with connecting rod to slide.Locating ring 3 is positioned at the two ends of fixed apparatus, is used to prevent that lumbar vertebra from producing hyperflexion and strutting.Screw 4 is positioned at pedicle nail top, is used for fixing locating piece and connecting rod.Connecting rod 5 is used to connect each pedicle screw, plays fixation.The same with other lumbar vertebral posterior operations, need internal fixation device is accurately implanted in the vertebral body pedicle of vertebral arch.
Claims (1)
1. lumbar vertebral posterior inner fixing device, it is characterized in that: it comprises pedicle nail (1), locating piece (2), locating ring (3), screw (4), connecting rod (5), locating piece (2) is between pedicle screw and screw, become bridge arch shape profile, inner face is smooth, can produce with connecting rod and slide, locating ring (3) is positioned at the two ends of fixed apparatus, be used to prevent that lumbar vertebra from producing hyperflexion and strutting, screw (4) is positioned at pedicle nail top, be used for fixing locating piece and connecting rod, connecting rod (5) is used to connect each pedicle screw, plays fixation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205759082U CN201814644U (en) | 2010-10-26 | 2010-10-26 | Lumbar vertebra posterior internal fixation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205759082U CN201814644U (en) | 2010-10-26 | 2010-10-26 | Lumbar vertebra posterior internal fixation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201814644U true CN201814644U (en) | 2011-05-04 |
Family
ID=43912614
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205759082U Expired - Fee Related CN201814644U (en) | 2010-10-26 | 2010-10-26 | Lumbar vertebra posterior internal fixation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201814644U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109998655A (en) * | 2019-04-10 | 2019-07-12 | 晏怡果 | Thoracic and lumbar vertebral posterior is orthopedic to use vertebral pedicle nail fixing device and fixed system |
-
2010
- 2010-10-26 CN CN2010205759082U patent/CN201814644U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109998655A (en) * | 2019-04-10 | 2019-07-12 | 晏怡果 | Thoracic and lumbar vertebral posterior is orthopedic to use vertebral pedicle nail fixing device and fixed system |
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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 |
Granted publication date: 20110504 Termination date: 20141026 |
|
| EXPY | Termination of patent right or utility model |