CN201879815U - Internal fixing elastic rod of vertebral pedicle - Google Patents
Internal fixing elastic rod of vertebral pedicle Download PDFInfo
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- CN201879815U CN201879815U CN201020577386XU CN201020577386U CN201879815U CN 201879815 U CN201879815 U CN 201879815U CN 201020577386X U CN201020577386X U CN 201020577386XU CN 201020577386 U CN201020577386 U CN 201020577386U CN 201879815 U CN201879815 U CN 201879815U
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- pedicle
- vertebral
- elastic rod
- vertebral arch
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Abstract
The utility model relates to an internal fixing elastic rod of vertebral pedicle, which is provided with a rod body made of polyetheretherketone (PEEK); both ends of the rod body are provided with pin holes; and metal pins are inlaid in the pin holes. In the internal fixing elastic rod of vertebral pedicle, the rod body which is made of PEEK is provided with the metal pins, so that the elastic rod can be visualized in X ray without affecting the functions, the re-examination, the filming and other diagnosis of a doctor are facilitated.
Description
Technical field
This utility model relates to a kind of medical apparatus and instruments, particularly a kind of pedicle of vertebral arch internal fixation flexible rod.
Background technology
Each vertebral body of human body all has a pair of pedicle of vertebral arch, i.e. the fulcrum at the formed domes of vertebral plate two ends in the posterior column structure is connected with the vertebral body in the place ahead and grows inferior articular process respectively at the upper and lower of pedicle of vertebral arch by it, is connected with the vertebral body that links to each other up and down.Pedicle of vertebral arch is the bone pipeline that cortical bone surrounds, and central authorities are full of spongy bone, has linked up spinal column front pillar and rear pillar.If controlled pedicle of vertebral arch, then can control the vertebral body in the place ahead and articular process, the vertebral plate at rear effectively.Therefore, the location of pedicle of vertebral arch is significant.
Pedicle of vertebral arch connects vertebral body and vertebral arch, contiguous spinal cord and nerve root.The transverse section of pedicle of vertebral arch is made up of the cortical bone of densification on every side for the ellipse of vertical footpath greater than transverse diameter, and the place ahead links to each other with vertebral body trailing edge cortical bone, and the rear then links to each other with articular process.The pedicle of vertebral arch center has only the thin cut bone spongiosa, and loose relatively x line sheet is cellular, but fine and close gradually from front to back, reaches maximal density in the pedicle of vertebral arch rear end, and the load that can bear is big.
Cause neuropathic pain or low back pain, single-unit or multi-segmental intervertebral disc degeneration to cause low back pain, decompression operation to cause iatrogenic lumbar instability, degeneration scoliosis to cause lumbar spinal stenosis and be in diseases such as progressive stage can adopting the pedicle of vertebral arch internal fixation operation greatly for lumbar spinal stenosis or degeneration lumbar spondylolisthesis.At present, the pedicle of vertebral arch internal fixation operation mostly adopts pedicle of vertebral arch internal fixation metal bar to cooperate with the vertebral fusion system, pedicle of vertebral arch is fixed, though this metal bar can play good fixation, but because its material has determined it to be out of shape with the actual demand of human body, promptly by metal bar carry out lumbar vertebral posterior fixing after, the activity of vertebral body is subjected to the restriction of metal bar during the health flexing, reduced the normal range of activity of patient's lumbar vertebra, and increased and close on the up and down generation of sections degenerated disease.
The flexible rod of using nonmetallic materials to make is also arranged, as adopt certain elastic internal fixation flexible rod that has that polyether-ether-ketone (PEEK) makes, can keep the normal range of activity of lumbar vertebra according to health flexing situation strain, reduce the generation of sections degenerated disease up and down.But this flexible rod can't be shown one's color under X-ray, makes that the doctor is very inconvenient in check, film making.
The utility model content
The purpose of this utility model provides a kind of above-mentioned shortcoming that overcomes, the pedicle of vertebral arch internal fixation flexible rod that can show one's color under X-ray.
The technical scheme that realizes this utility model purpose is: a kind of pedicle of vertebral arch internal fixation flexible rod, have the barred body that PEEK makes, and described barred body two ends have pin-and-hole, interlocking metallic pin in the pin-and-hole.
The direction that the pin-and-hole of above-mentioned pedicle of vertebral arch internal fixation flexible rod is provided with is consistent with the barred body length direction.
The utlity model has positive effect: this utility model makes flexible rod can show one's color under X-ray under the situation that does not influence its function by on the barred body of making at PEEK metallic pin being set, and is convenient to doctor's diagnostic work such as check, film making.
Description of drawings
Content of the present utility model is easier to be expressly understood in order to make, and according to specific embodiment also in conjunction with the accompanying drawings, this utility model is described in further detail, wherein below
Fig. 1 is a structural representation of the present utility model.
The specific embodiment
See Fig. 1, the utlity model has the barred body 1 that PEEK makes, barred body 1 two ends have pin-and-hole 2, and the direction that pin-and-hole 2 is provided with is consistent with barred body 1 length direction, interlocking metallic pin 3 in the pin-and-hole 2.
Above-described specific embodiment; the purpose of this utility model, technical scheme and beneficial effect are further described; institute is understood that; the above only is a specific embodiment of the utility model; be not limited to this utility model; all within spirit of the present utility model and principle, any modification of being made, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (2)
1. a pedicle of vertebral arch internal fixation flexible rod has the barred body (1) that PEEK makes, and it is characterized in that: described barred body (1) two ends have pin-and-hole (2), interlocking metallic pin (3) in the pin-and-hole (2).
2. pedicle of vertebral arch internal fixation flexible rod according to claim 1 is characterized in that: the direction that described pin-and-hole (2) is provided with is consistent with barred body (1) length direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020577386XU CN201879815U (en) | 2010-10-27 | 2010-10-27 | Internal fixing elastic rod of vertebral pedicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020577386XU CN201879815U (en) | 2010-10-27 | 2010-10-27 | Internal fixing elastic rod of vertebral pedicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201879815U true CN201879815U (en) | 2011-06-29 |
Family
ID=44177335
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020577386XU Expired - Fee Related CN201879815U (en) | 2010-10-27 | 2010-10-27 | Internal fixing elastic rod of vertebral pedicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201879815U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107432763A (en) * | 2016-05-26 | 2017-12-05 | 吴孟晃 | Vertebra nail fixing device |
-
2010
- 2010-10-27 CN CN201020577386XU patent/CN201879815U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107432763A (en) * | 2016-05-26 | 2017-12-05 | 吴孟晃 | Vertebra nail fixing device |
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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: 20110629 Termination date: 20191027 |