CN201445551U - Crest internal fixing device - Google Patents
Crest internal fixing device Download PDFInfo
- Publication number
- CN201445551U CN201445551U CN2009200473014U CN200920047301U CN201445551U CN 201445551 U CN201445551 U CN 201445551U CN 2009200473014 U CN2009200473014 U CN 2009200473014U CN 200920047301 U CN200920047301 U CN 200920047301U CN 201445551 U CN201445551 U CN 201445551U
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- CN
- China
- Prior art keywords
- internal
- nut
- fixing plates
- spinous
- fixation device
- 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 - Lifetime
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Abstract
The utility model relates to a crest internal fixing device, in particular to an internal fixing device which is used for lumbar, thoracic vertebra, cervical vertebra traumatic and pathologic fracture with narrow neural scutes. The crest internal fixing device comprises fixing plates, connecting screws and a nut, wherein two fixing plates are arranged, one sides of the fixing plates are provided with a plurality of tooth-shaped convex areas, chutes are arranged on the fixing plates, the tooth-shaped convex area sides of the two fixing plates are assembled face to face, the connecting screws penetrate through the chutes of two fixing plates to connect the two fixing plates together, and the two fixing plates are locked through the nut. The chutes are a long waist through slots. One to six chutes 2 are arranged. The connecting screws adopt bone screws, and screw heads are in hexagon shapes. The nut adopts an expansion hexagonal nut or a hexagonal nut.
Description
Technical field
What this utility model spinous internal-fixation device related to is a kind of lumbar vertebra, thoracic vertebra, cervical vertebra of being used for, traumatic and pathologisch Bruch, the inner fixing device that vertebral plate is narrow.
Background technology
At present, along with the continuous development of spinal surgery method, multiple internal fixation of spine device has appearred thereupon also.For example: spinous process steel plate, Ha Shi rod and vertebral body fixation steel plate.Have to strut the vertebral body number more, easily be strayed into spinal cord and increase the weight of damage, easily break off relations complicated operation; The fixed position that also has is darker, easily is strayed into the thoracic cavity or the abdominal cavity of front, the nervus vasculairs that easy damaged is big.The fixedly spinous process that also has can not strut and compress, and anti-torsion ability is poor.
Summary of the invention
This utility model purpose is at above-mentioned weak point, and a kind of spinous internal-fixation device is provided, and is that a kind of installation site is more shallow, and simple to operate, volume is little, fixedly the reliable internal fixation device.
Spinous internal-fixation device takes following technical scheme to realize: spinous internal-fixation device comprises fixing head, attachment screw and nut.Fixing head is provided with 2, and fixing head one side is provided with the plurality of tooth-shaped projection, and chute is arranged on the fixing head, and chute is the groove of long waist shaped.The toothed projections side of two fixing heads is assembled relatively, and attachment screw passes the chute of 2 fixing heads, connects together.Attachment screw adopts bone screw, and head of screw is an outer-hexagonal.Nut adopts expansion hex nut or hex nut.
Operation principle:
2 fixing heads are installed in the required fixed spinous process of patient both sides respectively, on spinous process,, leave through hole by operation tool.Attachment screw passes the chute and the supraspinous through hole of fixing head, and nut screwing clamping is on attachment screw.Protruding both sides of inserting spinous process are fixed spinous process by attachment screw and nut on 2 fixing heads.
The advantage of spinous internal-fixation device:
Spinous internal-fixation device, reasonable in design, simple in structure, convenient to operation, the installation site is more shallow, and volume is little, has shortened operating time, reduces patient's misery, can reduce the risk in the art, and firm and reliable connection can be treated traumatic and pathologisch Bruch.The present invention is a kind of lumbar vertebra, thoracic vertebra, cervical vertebra of being used for, traumatic and pathologisch Bruch, the inner fixing device that vertebral plate is narrow.
Description of drawings
The utility model is described in further detail below with reference to accompanying drawing:
Fig. 1 is the spinous internal-fixation device structural representation.
Fig. 2 is the fixing head sketch map of spinous internal-fixation device.
The specific embodiment
With reference to accompanying drawing 1～2, spinous internal-fixation device comprises that fixing head 1, attachment screw 4 and nut 6. fixing heads 1 are provided with 2, fixing head 1 one sides are provided with plurality of tooth-shaped projection 5, chute 2 is arranged on the fixing head 1, chute 2 is the groove of long waist shaped. toothed projections 5 sides of two fixing heads 1 are assembled relatively, attachment screw 4 passes the chute 2 of 2 fixing heads 1, connecting together. described chute 2 is provided with 1～6. and described attachment screw 4 is provided with 1～6. and attachment screw 4 adopts bone screw, and head of screw 3 is an outer-hexagonal. and nut 6 adopts expansion hex nut or hex nut.
Claims (6)
1. a spinous internal-fixation device is characterized in that comprising fixing head, attachment screw and nut; Fixing head is provided with 2, and fixing head one side is provided with the plurality of tooth-shaped projection, and chute is arranged on the fixing head, and the toothed projections side of two fixing heads is assembled relatively, and attachment screw passes the chute of 2 fixing heads, connects together, by nut check.
2. spinous internal-fixation device according to claim 1 is characterized in that described chute is the groove of long waist shaped.
3. spinous internal-fixation device according to claim 1 is characterized in that described chute 2 is provided with 1～6.
4. spinous internal-fixation device according to claim 1 is characterized in that described attachment screw is provided with the 1-6 root.
5. spinous internal-fixation device according to claim 1 is characterized in that described attachment screw adopts bone screw, and head of screw is an outer-hexagonal.
6. spinous internal-fixation device according to claim 1 is characterized in that described nut adopts expansion hex nut or hex nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200473014U CN201445551U (en) | 2009-07-14 | 2009-07-14 | Crest internal fixing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200473014U CN201445551U (en) | 2009-07-14 | 2009-07-14 | Crest internal fixing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201445551U true CN201445551U (en) | 2010-05-05 |
Family
ID=42550261
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200473014U Expired - Lifetime CN201445551U (en) | 2009-07-14 | 2009-07-14 | Crest internal fixing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201445551U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9662150B1 (en) | 2007-02-26 | 2017-05-30 | Nuvasive, Inc. | Spinal stabilization system and methods of use |
| US10335207B2 (en) | 2015-12-29 | 2019-07-02 | Nuvasive, Inc. | Spinous process plate fixation assembly |
-
2009
- 2009-07-14 CN CN2009200473014U patent/CN201445551U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9662150B1 (en) | 2007-02-26 | 2017-05-30 | Nuvasive, Inc. | Spinal stabilization system and methods of use |
| US10080590B2 (en) | 2007-02-26 | 2018-09-25 | Nuvasive, Inc. | Spinal stabilization system and methods of use |
| US10335207B2 (en) | 2015-12-29 | 2019-07-02 | Nuvasive, Inc. | Spinous process plate fixation assembly |
| US11382670B2 (en) | 2015-12-29 | 2022-07-12 | Nuvasive, Inc. | Spinous process plate fixation assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20100505 Effective date of abandoning: 20090714 |