CN205322465U - A interior fixing system for lumbar vertebrae slippage resets - Google Patents
A interior fixing system for lumbar vertebrae slippage resets Download PDFInfo
- Publication number
- CN205322465U CN205322465U CN201520979392.0U CN201520979392U CN205322465U CN 205322465 U CN205322465 U CN 205322465U CN 201520979392 U CN201520979392 U CN 201520979392U CN 205322465 U CN205322465 U CN 205322465U
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- China
- Prior art keywords
- screw
- pedicle
- vertebral arch
- fixation system
- pitman
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Abstract
The utility model discloses an interior fixing system for lumbar vertebrae slippage resets, including a plurality of pedicles of vertebral arch inflation screw, pedicle of vertebral arch inflation screw is provided with the screw thread including nail pole and pin fin on the nail pole, and the distal end is most advanced, pedicle of vertebral arch inflation screw is makeed by memory alloy, just cuts the institute open and outside branching under normal atmospheric temperature from most advanced axial, it has axial screw to open on the pin fin, and its terminal surface is opened there is the recess that runs through the screw, still include cause memory alloy preparation connective bar, the connective bar is installed in the recess, still including the screw rod that is used for compressing tightly the connective bar, screw rod and screw cooperation. The lumbar vertebrae slippage that the has an above -mentioned structure interior fixing system that resets, pedicle of vertebral arch screw front end expandable, the increase resistance effectively prevents not hard up withdrawing from. And its convenient operation is good with the organism compatibility.
Description
Technical field
This utility model relates to a kind of internal fixation system resetted for lumbar spondylolisthesis。
Background technology
Pedicle of vertebral arch is a part for vertebral arch, arise from vertebral body upper back, short and thick, rearward projection vertical with vertebral body direction, its profile is arc, merges with vertebral body, articular process and vertebral plate, and pedicle of vertebral arch is the ingredient of composition intervertebral foramina, it constitutes the lower wall of intervertebral foramina arranged above with a shallower incisura, and a pedicle of vertebral arch deeper pedicle of vertebral arch inferior thyroid notch arranged below constitutes the upper wall of intervertebral foramina。
To serious lumbar spondylolisthesis patient, pedicle of vertebral arch lift screw is the conventional means of a kind for the treatment of。Because vertebral body osteoporosis or reset difficulty cause that pedicle screw loosens in lumbar spondylolisthesis art, cause operative failure。
Utility model content
For the technical problem of above-mentioned existence, this utility model provides a kind of internal fixation system resetted for lumbar spondylolisthesis。Most advanced and sophisticated expandable pedicle of vertebral arch swell fixture is utilized to implant the lumbar vertebra slipped, it is to avoid to loosen。
In order to solve above-mentioned technical problem, the technical solution adopted in the utility model is: a kind of internal fixation system resetted for lumbar spondylolisthesis, and including some pedicle of vertebral arch swell fixtures, described pedicle of vertebral arch swell fixture includes nail rod and ailhead, nail rod is provided with screw thread, and far-end is most advanced and sophisticated；Described pedicle of vertebral arch swell fixture is made by memorial alloy, and axially cut open from tip and outside bifurcated at normal temperatures；Having axial screw on described ailhead, its end face has the groove running through screw；Also including one and made pitman by memorial alloy, described pitman is installed in groove；Also including the screw rod for compressing pitman, described screw rod coordinates with screw。
Preferred as one, described memorial alloy is Nitinol。Nitinol can deform upon at low temperatures, can return to again original shape after being heated。Utilize the pedicle of vertebral arch swell fixture that this characteristic makes, under low temperature, its front end is closed up implantation lumbar vertebra, when temperature recovers to reach room temperature, its most advanced and sophisticated outwards bifurcated so that it not easily loosens。
Improving as one, also include some pedicle of vertebral arch plain screws, described pedicle of vertebral arch plain screw includes nail rod and ailhead, and nail rod is provided with screw thread, and far-end is most advanced and sophisticated；Having axial screw on described ailhead, its end face has the groove running through screw。Vertebral arch plain screw is for being embedded in the vertebral body that slippage lumbar vertebra is adjacent, and its effect, primarily as fulcrum, does not play the effect of lift, so without adopting pedicle of vertebral arch swell fixture, reducing cost。
Improving as one, described screw tip is provided with the interior hexagonal mouth or cross mouth of being easy to tighten。It is easy to utilize screwdriver to tighten, thus being fixed by pitman。
Improving as one, described pitman is the arc coincideing with human anatomic structure, and its concave side is provided with mark line。Effect is to allow mark line all the time upwards with under transfer rod pincers auxiliary in slippage corpus vertebrae replacement process under prone body position, makes rod lumbar spondylolisthesis in the process of deformation reset toward normal physiological curvature。
Improving as one, described pedicle of vertebral arch swell fixture has axial through hole, described through hole has been built into inner core。When needing to take out pedicle of vertebral arch swell fixture, inner core of first back-outing, pass into through hole with frozen water and make the cooling deformation of screw front end, convenient taking-up。
Of the present utility model having the beneficial effect that the lumbar spondylolisthesis reduction fixation system with said structure, pedicle screw front end is inflatable, increases resistance and effectively prevents from loosening exiting。And it is easy to operate, good with the body compatibility。
Accompanying drawing explanation
Fig. 1 is pedicle of vertebral arch swell fixture sectional structure schematic diagram。
Fig. 2 is pedicle of vertebral arch plain screw sectional structure schematic diagram。
Fig. 3 is structural representation of the present utility model。
Labelling in figure: 1 pedicle of vertebral arch swell fixture, 2 nail rods, 3 ailheads, 4 grooves, 5 inner cores, 6 pedicle of vertebral arch plain screws, 7 nail rods, 8 pitmans, 9 screw rods。
Detailed description of the invention
Below in conjunction with accompanying drawing, this utility model is described in detail。
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, this utility model is further elaborated。Should be appreciated that specific embodiment described herein is only in order to explain this utility model, be not used to limit this utility model。
As shown in Figure 1, Figure 2, Figure 3 shows, this utility model includes some pedicle of vertebral arch swell fixtures 1, and described pedicle of vertebral arch swell fixture 1 is made by memorial alloy, including nail rod 2 and ailhead 3, nail rod 2 is provided with screw thread, and its far-end is most advanced and sophisticated, and axially cuts open from tip；Having axial screw on described ailhead, its end face has the groove running through screw；Having axial through hole on pedicle of vertebral arch swell fixture 1, described through hole has been built into inner core 5。Also including one and made pitman 8 by memorial alloy, described pitman is installed in groove 4；Also including the screw rod 9 for compressing pitman, described screw rod 9 coordinates with screw。Screw rod 9 top is provided with the interior hexagonal mouth or cross mouth of being easy to tighten。Also including some vertebral arch plain screws 6, described pedicle of vertebral arch plain screw 6 includes nail rod 7 and ailhead 3, and nail rod 6 is provided with screw thread, and far-end is most advanced and sophisticated；Having axial screw on described ailhead 3, its end face has the groove 4 running through screw；Described pitman is 8 arcs coincideing with human anatomic structure, and its concave side is provided with mark line。Described memorial alloy is Nitinol。
It uses step as follows:
1. the excision vertebral plate of sliding vertebral body, spinous process, spinal canal decompression is abundant。
2. utilize screw tap to expand nail road after sliding vertebral body upper cutting pedicle screw trajectory。Pedicle of vertebral arch swell fixture 1 is placed in the normal saline of low temperature so that it is be quickly screwed after most advanced and sophisticated Guan Bi in nail road。Along with temperature raises, the shape under room temperature is recovered and bifurcated gradually in its tip, follows closely dense contact sclerotin in road vertebral body。
3., according to operation requirement, if taking two groups of screws to fix, then sliding vertebral body next vertebral body adjacent, one group of pedicle of vertebral arch plain screw 6 is installed。If taking three groups of screws to fix, then sliding vertebral body each vertebral body up and down, one group of pedicle of vertebral arch plain screw 6 is installed。If osteoporosis is obvious certainly, it is possible to all implant pedicle of vertebral arch swell fixture 1。
4. pitman 8 is placed in the normal saline of low temperature so that it is be quickly placed into after quality deliquescing in the groove 4 of ailhead 3, screw is all together in series。And utilize screw rod 9 to push down fixing pitman 8, but screw rod is not exclusively locked, allows pitman 8 can produce certain displacement。Making pitman 8 mark line all the time upwards with under transfer rod pincers auxiliary, along with temperature raises, pitman 8 reverts to the arc that the physiological anatomic architecture with normal person's vertebra coincide gradually。At this moment, the screw on limit is as fulcrum, and under leverage, sliding vertebral body lifts reset gradually。After excellent 8 recoveries to be connected, screw rod 9 is screwed into the screw on ailhead 3, compresses pitman 8。
The foregoing is only preferred embodiment of the present utility model, not in order to limit this utility model, all any amendment, equivalent replacement and improvement etc. made within spirit of the present utility model and principle, should be included within protection domain of the present utility model。
Claims (6)
1. the internal fixation system resetted for lumbar spondylolisthesis, including some pedicle of vertebral arch swell fixtures, described pedicle of vertebral arch swell fixture includes nail rod and ailhead, and nail rod is provided with screw thread, and far-end is most advanced and sophisticated；It is characterized in that: described pedicle of vertebral arch swell fixture is made by memorial alloy, and axially cut open from tip and outside bifurcated at normal temperatures；Having axial screw on described ailhead, its end face has the groove running through screw；Also including one and made pitman by memorial alloy, described pitman is installed in groove；Also including the screw rod for compressing pitman, described screw rod coordinates with screw。
2. a kind of internal fixation system resetted for lumbar spondylolisthesis according to claim 1, it is characterised in that: also including some pedicle of vertebral arch plain screws, described pedicle of vertebral arch plain screw includes nail rod and ailhead, and nail rod is provided with screw thread, and far-end is most advanced and sophisticated；Having axial screw on described ailhead, its end face has the groove running through screw。
3. a kind of internal fixation system resetted for lumbar spondylolisthesis according to claim 1, it is characterised in that: described screw tip is provided with the interior hexagonal mouth or cross mouth of being easy to tighten。
4. a kind of internal fixation system resetted for lumbar spondylolisthesis according to claim 1, it is characterised in that: described pitman is the arc coincideing with human anatomic structure, and its concave side is provided with mark line。
5. a kind of internal fixation system resetted for lumbar spondylolisthesis according to claim 1, it is characterised in that: having axial through hole on described pedicle of vertebral arch swell fixture, described through hole has been built into inner core。
6. a kind of internal fixation system resetted for lumbar spondylolisthesis according to claim 1, it is characterised in that: described memorial alloy is Nitinol。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520979392.0U CN205322465U (en) | 2015-12-01 | 2015-12-01 | A interior fixing system for lumbar vertebrae slippage resets |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520979392.0U CN205322465U (en) | 2015-12-01 | 2015-12-01 | A interior fixing system for lumbar vertebrae slippage resets |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205322465U true CN205322465U (en) | 2016-06-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520979392.0U Expired - Fee Related CN205322465U (en) | 2015-12-01 | 2015-12-01 | A interior fixing system for lumbar vertebrae slippage resets |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205322465U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111557725A (en) * | 2020-05-23 | 2020-08-21 | 徐州长风生物科技有限公司 | Bone screw with low damage and high holding force |
| CN111588456A (en) * | 2020-05-23 | 2020-08-28 | 徐州长风生物科技有限公司 | High-holding-force low-loss slow-release medical bone screw |
| CN111616788A (en) * | 2020-05-23 | 2020-09-04 | 徐州长风生物科技有限公司 | Bone screw with high anti-pulling capacity |
| CN113317859A (en) * | 2021-06-16 | 2021-08-31 | 青岛大学附属医院 | Percutaneous screw longitudinal rod system |
| CN113729902A (en) * | 2021-09-18 | 2021-12-03 | 邦世科技(南京)有限公司 | Pedicle screw, distraction rod, heating rod and pedicle screw system |
-
2015
- 2015-12-01 CN CN201520979392.0U patent/CN205322465U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111557725A (en) * | 2020-05-23 | 2020-08-21 | 徐州长风生物科技有限公司 | Bone screw with low damage and high holding force |
| CN111588456A (en) * | 2020-05-23 | 2020-08-28 | 徐州长风生物科技有限公司 | High-holding-force low-loss slow-release medical bone screw |
| CN111616788A (en) * | 2020-05-23 | 2020-09-04 | 徐州长风生物科技有限公司 | Bone screw with high anti-pulling capacity |
| CN111557725B (en) * | 2020-05-23 | 2022-03-22 | 余丹丹 | Bone screw and perforating device with low damage and high holding force |
| CN111616788B (en) * | 2020-05-23 | 2022-04-26 | 北京庆北医疗器械有限公司 | Bone screw and perforating device with high anti-pulling capacity |
| CN113317859A (en) * | 2021-06-16 | 2021-08-31 | 青岛大学附属医院 | Percutaneous screw longitudinal rod system |
| CN113729902A (en) * | 2021-09-18 | 2021-12-03 | 邦世科技(南京)有限公司 | Pedicle screw, distraction rod, heating rod and pedicle screw 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160622 Termination date: 20161201 |