CN205458985U - Pedicle screw - Google Patents
Pedicle screw Download PDFInfo
- Publication number
- CN205458985U CN205458985U CN201620138653.0U CN201620138653U CN205458985U CN 205458985 U CN205458985 U CN 205458985U CN 201620138653 U CN201620138653 U CN 201620138653U CN 205458985 U CN205458985 U CN 205458985U
- Authority
- CN
- China
- Prior art keywords
- screw
- screw rod
- spanner
- rod
- connecting rod
- 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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Abstract
The utility model provides a pedicle screw, including screw, screw rod and spanner, be equipped with on the screw rod and hold with the cooperation of spanner complex spanner, be equipped with a plurality of inserted bars on the screw rod, the screw correspondence is equipped with the slot that holds the inserted bar, be equipped with the connecting rod between screw and the screw rod, connecting rod one end is connected with screw thread, and the other end rotates with the screw rod to be connected, it screws up the groove to be equipped with the second on the connecting rod, be equipped with the first groove of screwing up on the screw rod. Since the technical scheme is used, the utility model discloses the part is few, and simple structure, low in manufacturing cost have fine popularization prospect, backbone rear portion muscle ligament complex body structure is not destroyed to the putting into of percutaneous wicresoft in the use, and is little to the influence of backbone stability.
Description
Technical field
This utility model relates to medical instruments field, more particularly to a kind of pedicle screw.
Background technology
Lumbar spinal stenosis refers to that a variety of causes causes bone-ligament vertebral canal volume to reduce, cause lumbar vertebra neural and
Angiokinesis space is reduced, thus cause with Comprehensive Clinical that lumbago and skelalgia, intermittent claudication are main performance
Disease.Along with the acceleration of aged tendency of population process, the sickness rate moving back lumbar spinal stenosis is more and more higher, accepts hands
The patient populations of art increases the most year by year.
The traditional standard procedures of lumbar spinal stenosis is Laminectomy.Operation general's excision spinous process,
Vertebral plate, ligamenta flava and part facet joint, add simultaneously and do pedicle internal fixators and intervertebral fusion, to reach
The extensively purpose of decompression.The failure of operation is because vertebrae plate resection and the prominent excision of partial joint, damage widely
Posterior spinal posterior muscular ligament complex structure, it is the most biological that pedicle screw systems changes spinal column rear pillar of knowing clearly
The line of force, the postoperative iatrogenic lumbar instability of easy appearance and Lumbar Vertebral Canal restenosis, and easily occur that neighbouring section moves back
Become and accelerate, cause long-term effect the best.It is long to there is operating time in this type of operation simultaneously, and wound is big, hemorrhage many,
The problems such as expense is expensive, post-operative recovery time length.
Although Laminectomy remains most basic art formula, but due to its defect and deficiency, thus new
The modus operandi of Wicresoft the most gradually enters into the sight line of people.At present for the operation master of lumbar spinal stenosis Wicresoft
Percutaneous cervical arc root internal fixation by nail-stick system art to be had, processus spinosus prop-open device coflex implantation, pedicle of vertebral arch lengthening
Deng.But it is complicated that these apparatuses have structure, operating difficulties, wound is big, the hemorrhage shortcomings such as many.
Utility model content
The technical problems to be solved in the utility model is to overcome drawbacks described above, it is provided that a kind of simple in construction, operation
Convenient, wound is little, goes out insufficiency of blood, it is adaptable to the pedicle screw of operative treatment lumbar spinal stenosis.
For solving the problems referred to above, this utility model be the technical scheme is that
A kind of pedicle screw, including screw, screw rod and spanner, described screw rod is provided with and coordinates with spanner
Spanner abutting end, described screw rod is provided with some inserted links, and described screw is correspondingly provided with the slot accommodating inserted link,
Being provided with connecting rod between described screw and screw rod, described connecting rod one end is connected with screw thread, the other end with
Screw rod is rotationally connected, and described connecting rod is provided with second and tightens groove, and described screw rod is provided with first and tightens groove.
Improve as one: described screw rod is provided with passage, and described passage and second is tightened groove and is correspondingly arranged,
Described first tightens groove is arranged at channel end.
Improve as one: described connecting rod is provided with the first guide pinhole, and described screw is provided with the second guide pinhole.
Improve as one: described spanner includes that through hole, described through hole are hexagon, described spanner abutting end
For hexagon.
Improve as one: described spanner is provided with handle.
Improve as one: described screw is cancellous threads, and described screw rod is cortical bone screw thread.
Owing to have employed technique scheme, this utility model parts are few, simple in construction, low cost of manufacture,
There is good promotion prospect；The inserting of minimal invasion during use, does not destroy spinal posterior muscle ligament multiple
Whole body structure is little on spinal stability impact.
The utility model is described in further detail with embodiment below in conjunction with the accompanying drawings.
Accompanying drawing explanation
Accompanying drawing 1 is the structural representation of a kind of pedicle screw of this utility model；
Accompanying drawing 2 is the structural representation of Fig. 1 middle section A-A；
Accompanying drawing 3 is the structural representation of Fig. 1 middle section B-B.
In figure: 1-spanner；2-through hole；3-handle；4-first tightens groove；5-screw rod；6-inserted link；7-pulls
Hands abutting end；8-connecting rod；9-second tightens groove；10-the first guide pinhole；11-screw；12-the second guide pin
Hole.
Detailed description of the invention
Embodiment:
As shown in Figure 1,2 and 3, a kind of pedicle screw, including screw 11, screw rod 5 and spanner 1, institute
Stating screw rod 5 and be provided with the spanner abutting end 7 coordinated with spanner 1, described screw rod 5 is provided with four inserted links 6,
Described screw 11 is correspondingly provided with the slot accommodating inserted link 6, is provided with connection between described screw 11 and screw rod 5
Bar 8, described connecting rod 8 one end threadeds with screw 11, and the other end is rotationally connected with screw rod 5, described
Connecting rod 8 is provided with second and tightens groove 9, and described screw rod 5 is provided with first and tightens groove 4.Described screw 11
For cancellous threads, described screw rod 5 is cortical bone screw thread.
Described first tightens groove 4 tightens groove for interior hexagonal, and described second tightens groove 9 tightens groove for interior hexagonal.
Described screw rod 5 is provided with passage, and described passage and second is tightened groove 9 and is correspondingly arranged, and described first twists
Tight groove 4 is arranged at channel end.
Described connecting rod 8 is provided with the first guide pinhole 10, and described screw 11 is provided with the second guide pinhole 12.
Described spanner 1 includes through hole 2, and described through hole 2 is hexagon, and described spanner abutting end 7 is hexagon.
Described spanner 1 is provided with handle 3.
In use, after lumbar vertebra crista lambdoidalis inserts, screw 11 will be anchored in vertebral body this utility model,
Rivet is followed closely in pedicle of vertebral arch by screw rod 5, the female thread phase of the screw with external thread 11 at internal connecting rod 8 two ends
Join, formed threaded.By instrument rotating inner part connecting rod 8, separate screw 11 and screw rod 5, due to
Inserted link 6 acts on, and when rotating inner part connecting rod 8, screw 11 and screw rod 5 will not relatively rotate, and make
With spanner 1 standing screw 5, it is ensured that screw rod 5 position does not offsets, so that screw 11 and screw rod 5 position are true
Fixed, do not destroy spinal posterior muscle ligament complex structure, little on spinal stability impact.
While this utility model extends, drive the increase of the spacing of the pedicle of vertebral arch section of breaking, reach artificially to extend
Pedicle of vertebral arch, expands canalis spinalis cross-sectional area and intervertebral foramina aperture, releases nerve compression and improves the purpose of clinical symptoms.
Can make that operation more Wicresoft's degree increases, spinal posterior tissue injury is little simultaneously, go out insufficiency of blood, operating time
The advantages such as, post-operative recovery time short with the hospital stays is short；Extensive for treating lumbar spinal stenosis prospect.
Above an embodiment of the present utility model is described in detail, but described content has been only this practicality
Novel preferred embodiment, it is impossible to be considered for limiting practical range of the present utility model.Fan Yiben is practical
Equalization change and the improvement etc. that novel application range is made, all should belong to patent of the present utility model and contain model
Within enclosing.
Claims (6)
1. a pedicle screw, it is characterised in that: include screw (11), screw rod (5) and spanner (1),
Described screw rod (5) is provided with the spanner abutting end (7) coordinated with spanner (1), and described screw rod sets on (5)
Some inserted links (6), described screw (11) is had to be correspondingly provided with the slot accommodating inserted link (6), described screw (11)
And between screw rod (5), it being provided with connecting rod (8), described connecting rod (8) one end is with screw (11) screw thread even
Connecing, the other end is rotationally connected with screw rod (5), and described connecting rod (8) is provided with second and tightens groove (9),
Described screw rod (5) is provided with first and tightens groove (4).
Pedicle screw the most according to claim 1, it is characterised in that: described screw rod sets on (5)
Having passage, described passage and second to tighten groove (9) and be correspondingly arranged, described first tightens groove (4) is arranged at
Channel end.
Pedicle screw the most according to claim 1, it is characterised in that: described connecting rod (8) sets
The first guide pinhole (10), described screw (11) is had to be provided with the second guide pinhole (12).
Pedicle screw the most according to claim 1, it is characterised in that: described spanner (1) includes
Through hole (2), described through hole (2) is hexagon, and described spanner abutting end (7) is hexagon.
Pedicle screw the most according to claim 1, it is characterised in that: described spanner sets on (1)
There is handle (3).
Pedicle screw the most according to claim 1, it is characterised in that: described screw (11) is pine
Matter bone thread, described screw rod (5) is cortical bone screw thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620138653.0U CN205458985U (en) | 2016-02-18 | 2016-02-18 | Pedicle screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620138653.0U CN205458985U (en) | 2016-02-18 | 2016-02-18 | Pedicle screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205458985U true CN205458985U (en) | 2016-08-17 |
Family
ID=56677992
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620138653.0U Expired - Fee Related CN205458985U (en) | 2016-02-18 | 2016-02-18 | Pedicle screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205458985U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106618705A (en) * | 2017-01-23 | 2017-05-10 | 南京鼓楼医院 | Flexible connecting vertebral pedicle screw |
| CN107049456A (en) * | 2017-05-12 | 2017-08-18 | 王文军 | Pedicle screw internal fixation operation lock screw and supporting wrench set |
-
2016
- 2016-02-18 CN CN201620138653.0U patent/CN205458985U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106618705A (en) * | 2017-01-23 | 2017-05-10 | 南京鼓楼医院 | Flexible connecting vertebral pedicle screw |
| CN106618705B (en) * | 2017-01-23 | 2018-09-21 | 南京鼓楼医院 | A kind of flexible connection pedicle screw |
| CN107049456A (en) * | 2017-05-12 | 2017-08-18 | 王文军 | Pedicle screw internal fixation operation lock screw and supporting wrench set |
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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: 20160817 Termination date: 20170218 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |