CN205083599U - Lumbar vertebrae slippage pedicle of vertebral arch is carried and is drawn screw not hard up fixing system that prevents reseing - Google Patents
Lumbar vertebrae slippage pedicle of vertebral arch is carried and is drawn screw not hard up fixing system that prevents reseing Download PDFInfo
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- CN205083599U CN205083599U CN201520744684.6U CN201520744684U CN205083599U CN 205083599 U CN205083599 U CN 205083599U CN 201520744684 U CN201520744684 U CN 201520744684U CN 205083599 U CN205083599 U CN 205083599U
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- pedicle
- vertebral arch
- screw
- overcoat
- inclined hole
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Abstract
The utility model discloses a lumbar vertebrae slippage pedicle of vertebral arch is carried and is drawn screw not hard up fixing system that prevents reseing, carry including the pedicle of vertebral arch and draw the screw and aim the locator, the pedicle of vertebral arch is carried and is drawn the screw to include the screw rod and set up the U -shaped fork at the screw rod top, aim the locator including being used for cup jointing the overcoat of sticking at the U -shaped, swing joint has the adjustment arm on the overcoat, adjustment arm one end and overcoat swing joint, the other end is provided with the hole with the muffjoint, the pedicle of vertebral arch is carried and is drawn the inclined hole that is provided with the penetrability on the screw screw rod, still include a fixed needle that runs through the inclined hole. It carries the inclined hole that draws on the screw and fixes to utilize fixed needle to run through the pedicle of vertebral arch to the utilization aims that the locator is accurate will fix the stylus printer. It is fixed effectual, can prevent effectively that the pedicle of vertebral arch from carrying to draw that the screw is not hard up to be withdrawed from. And fixed stylus printer income location is accurate, and the avoidance of repetition operation brings the injury to patient.
Description
Technical field
This utility model relates to a kind of system loosened for preventing pedicle of vertebral arch from lifting screw reset.
Background technology
Pedicle of vertebral arch is a part for vertebral arch, arise from vertebral body upper back, short and thick, with Vertical dimension rear, vertebral body direction projection, 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, there is a more shallow incisura to form the lower wall of intervertebral foramina above it, below pedicle of vertebral arch, have a darker pedicle of vertebral arch inferior thyroid notch to form the upper wall of intervertebral foramina.
To serious lumbar spondylolisthesis patient, or merge the loose lumbar spondylolisthesis patient of sclerotin, pedicle of vertebral arch lift screw is a kind of conventional means for the treatment of.Existing pedicle screw comprises the U-shaped fork of screw rod and screw tip.Time in art to reduction of spondylolisthesis, pedicle of vertebral arch lift screw is very easily loosening, even exits, affects surgical effect.
Utility model content
For the technical problem of above-mentioned existence, this utility model provides a kind of lumbar spondylolisthesis pedicle of vertebral arch to lift screw anti-reset to loosen fixed system, utilizes locking pin to run through inclined hole on pedicle of vertebral arch lift screw screw rod, thus is fixed pedicle of vertebral arch lift screw.
In order to solve the problems of the technologies described above, the technical solution adopted in the utility model is: the anti-reset of a kind of lumbar spondylolisthesis pedicle of vertebral arch lift screw loosens fixed system, comprises pedicle of vertebral arch lift screw and aims at localizer; Described pedicle of vertebral arch lift screw comprises screw rod and is arranged on the U-shaped fork of screw tip, and described aiming localizer comprises the overcoat for being socketed on U-shaped fork; Described outer putting is connected with adjustment arm; Described adjustment arm one end is flexibly connected with overcoat, and the other end is provided with the hole with sleeve connection; Described pedicle of vertebral arch lift screw screw rod is provided with the inclined hole of penetrance; Also comprise the locking pin that runs through inclined hole.
Improve as one, put the lock-screw being also provided with and being fixed on by overcoat on U-shaped fork outward.Overcoat is directly socketed on U-shaped fork very infirm, easily misplaces.By be enclosed within outward U-shaped fork on carry out precise positioning after, recycling lock-screw fix, avoid being shifted in use, cause error.
Improve as one, described U-shaped is pitched two yokes and is provided with the indentation being convenient to fracture.The U-shaped fork of pedicle of vertebral arch lift screw lifts screws as connecting portion for connecting two pedicles of vertebral arch.The length of usual U-shaped fork has a definite limitation, and operator is not very convenient when connecting.After U-shaped fork yoke arranges indentation, the U-shaped fork of comparable conventional pedicle of vertebral arch lift screw extends many, and handled easily person adjusts the position of U-shaped fork upper shed under direct-view, thus is conducive to the arrangement of pitman, reset, locking.Only need fracture from indentation after installing.
Improve as one, described inclined hole is arranged on the far-end of screw rod.Due to the relation of internal stress, inclined hole is arranged on screw distal end and least easily fractures, and ensure that reliability and the service life of pedicle of vertebral arch lift screw.
Improve, for rivet between described adjustment arm and overcoat as one.Riveted joint makes two parts can relatively turn right, there is again certain pretightning force, convenient location.
Usefulness of the present utility model is: the anti-reset of pedicle of vertebral arch lift screw with said structure loosens fixed system, utilizes the inclined hole that locking pin runs through on pedicle of vertebral arch lift screw to be fixed, and utilizes aiming localizer to be squeezed into by locking pin accurately.Its good fixing effect, effectively can prevent pedicle of vertebral arch from lifting screw loosening and exit.And locking pin squeezes into registration, repetitive operation is avoided to bring injury to patient.
Accompanying drawing explanation
Fig. 1 pedicle of vertebral arch lift bolt structure schematic diagram.
Fig. 2 structural representation of the present utility model.
Labelling in figure: 1 pedicle of vertebral arch lift screw, 2 screw rods, 3U shape fork, 4 indentations, 5 inclined holes, 6 overcoats, 7 adjustment arm, 8 sleeves, 9 locking pins, 10 lock-screws.
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 only in order to explain this utility model, and be not used in restriction this utility model.
As shown in Figure 1 and Figure 2, this utility model comprises pedicle of vertebral arch lift screw 1 and aims at localizer; Described pedicle of vertebral arch lift screw 1 comprises screw rod 2 and is arranged on the U-shaped fork 3 at screw rod 2 top, and U-shaped is pitched 3 two yokes and is provided with the indentation 4 being convenient to fracture.Described aiming localizer comprises the overcoat 6 for being socketed on U-shaped fork 3; Overcoat 6 is also provided with the lock-screw 10 be fixed on by overcoat 6 on U-shaped fork 3.Described overcoat 6 is connected with adjustment arm 7; Described adjustment arm 7 one end is flexibly connected with overcoat 6, and the other end is provided with the hole be connected with sleeve 8; Described pedicle of vertebral arch lift screw 1 screw rod 2 is provided with the inclined hole 5 of penetrance; Inclined hole 5 is arranged on the far-end of screw rod 2.Also comprise the locking pin 9 that runs through inclined hole 5.Riveted joint is preferably between adjustment arm 7 and overcoat 6.
It uses step as follows:
1, abundant to slippage vertebral resection vertebral plate, spinous process, spinal canal decompression.
2, slippage vertebral body settles one group of pedicle of vertebral arch lift screw 1, and next vertebral body adjacent settles one group of pedicle screw.
3, aiming localizer overcoat 6 is placed on pedicle of vertebral arch lift screw 1U shape fork 3, aims at scale mark, and utilize lock-screw 10 to fix.
4, the angle of adjustment arm 7 is regulated according to the length (being generally 45mm, 50mm) of pedicle of vertebral arch lift screw 1.And sleeve 8 is inserted in the hole of adjustment arm 7 front end, avoid spinal dura mater and nerve root, squeeze into locking pin 9 with electric drill from sleeve 8 and enter vertebral body, and run through the inclined hole 5 on screw rod 2.Sleeve 8 has the effect aiming at and lead.
5, locking pin 9 is taken out after corpus vertebrae replacement.
The foregoing is only preferred embodiment of the present utility model; not in order to limit this utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.
Claims (6)
1. the anti-reset of a lumbar spondylolisthesis pedicle of vertebral arch lift screw loosens fixed system, comprise pedicle of vertebral arch lift screw, described pedicle of vertebral arch lift screw comprises screw rod and is arranged on the U-shaped fork of screw tip, it is characterized in that: the inclined hole described pedicle of vertebral arch lift screw screw rod being provided with penetrance; Also comprise the locking pin that runs through inclined hole.
2. the anti-reset of a kind of lumbar spondylolisthesis pedicle of vertebral arch lift screw according to claim 1 loosens fixed system, it is characterized in that: also comprise an aiming localizer, and described aiming localizer comprises the overcoat for being socketed on U-shaped fork; Described outer putting is connected with adjustment arm; Described adjustment arm one end is flexibly connected with overcoat, and the other end is provided with the hole with sleeve connection.
3. the anti-reset of a kind of lumbar spondylolisthesis pedicle of vertebral arch lift screw according to claim 2 loosens fixed system, it is characterized in that: describedly put the lock-screw being also provided with and being fixed on by overcoat on U-shaped fork outward.
4. the anti-reset of a kind of lumbar spondylolisthesis pedicle of vertebral arch lift screw according to claim 2 loosens fixed system, it is characterized in that: described U-shaped is pitched two yokes and is provided with the indentation being convenient to fracture.
5. the anti-reset of a kind of lumbar spondylolisthesis pedicle of vertebral arch lift screw according to claim 1 loosens fixed system, it is characterized in that: described inclined hole is arranged on the far-end of screw rod.
6. the anti-reset of a kind of lumbar spondylolisthesis pedicle of vertebral arch lift screw according to claim 2 loosens fixed system, it is characterized in that: for rivet between described adjustment arm and overcoat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520744684.6U CN205083599U (en) | 2015-09-24 | 2015-09-24 | Lumbar vertebrae slippage pedicle of vertebral arch is carried and is drawn screw not hard up fixing system that prevents reseing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520744684.6U CN205083599U (en) | 2015-09-24 | 2015-09-24 | Lumbar vertebrae slippage pedicle of vertebral arch is carried and is drawn screw not hard up fixing system that prevents reseing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205083599U true CN205083599U (en) | 2016-03-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520744684.6U Expired - Fee Related CN205083599U (en) | 2015-09-24 | 2015-09-24 | Lumbar vertebrae slippage pedicle of vertebral arch is carried and is drawn screw not hard up fixing system that prevents reseing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205083599U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107174326A (en) * | 2017-06-15 | 2017-09-19 | 邹伟 | A kind of interlocking formula pedicle screw system |
| CN109700521A (en) * | 2019-01-29 | 2019-05-03 | 苏州点合医疗科技有限公司 | One kind creating vertebral canal plastic operation device to wearing to decline |
-
2015
- 2015-09-24 CN CN201520744684.6U patent/CN205083599U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107174326A (en) * | 2017-06-15 | 2017-09-19 | 邹伟 | A kind of interlocking formula pedicle screw system |
| CN107174326B (en) * | 2017-06-15 | 2023-12-12 | 邹伟 | Interlocking pedicle screw system |
| CN109700521A (en) * | 2019-01-29 | 2019-05-03 | 苏州点合医疗科技有限公司 | One kind creating vertebral canal plastic operation device to wearing to decline |
| CN109700521B (en) * | 2019-01-29 | 2023-11-24 | 苏州点合医疗科技有限公司 | Opposite-penetrating minimally invasive vertebral canal forming 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 |
Granted publication date: 20160316 Termination date: 20160924 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |