CN105326546A - Pedicle screw system - Google Patents
Pedicle screw system Download PDFInfo
- Publication number
- CN105326546A CN105326546A CN201410392617.2A CN201410392617A CN105326546A CN 105326546 A CN105326546 A CN 105326546A CN 201410392617 A CN201410392617 A CN 201410392617A CN 105326546 A CN105326546 A CN 105326546A
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- CN
- China
- Prior art keywords
- pedicle screw
- pedicle
- connecting rod
- connection rod
- pedicle nail
- 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.)
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Abstract
The invention belongs to the technical field of medical instruments and particularly relates to a pedicle screw system. The pedicle screw system comprises a fixed pedicle screw and a breakable pedicle screw which are connected with each other through an angular connection rod. The angular connection rod comprises a connection rod body and an internal thread head connected with the connection rod body, the internal thread head is connected with the root of the fixed pedicle screw prior to being fixedly locked by a locking device, and the other end of the connection rod body passes through a U-shaped groove of the root of the breakable pedicle screw prior to being compressed by a compressing device. The pedicle screw system has the advantage that the fixed pedicle screw is connected with the breakable pedicle screw through the angular connection rod, so that during surgery, the fixed pedicle screw can be adjusted by corresponding angles conveniently to meet different surgical needs.
Description
Technical field
The invention belongs to technical field of medical instruments, be specifically related to a kind of spinal surgery pedicle screw systems.
Background technology
Pedicle screw instrumentation has three posts and fixes advantage, is a kind of very ripe spine surgical technique, is widely used.Traditional method adopts way of escape otch open surgery, need extensively peel off the structure such as paraspinal muscle, ligament, easily causes paraspinal muscle to lose innervation, the sequela such as patient easily leaves over lumbar and back pain, stiff.This operation wound is large, hemorrhage many, and the hospital stays is long, increases patient's misery and financial burden.Minimal invasion pedicle screw instrumentation was applied to clinical in recent years, and wound is little, lost blood few, recovered fast, obtained certain curative effect.Current percutaneous cervical arc root nail system and corresponding Minimally Invasive Surgery apparatus mainly offshore company are developed and are released in market, it all adopts hollow pedicle to follow closely, preset length and the radian of rod, device design is loaded down with trivial details, processing technology difficulty is large, and especially the difficulty of processing of hollow pedicle nail is large, and cost of manufacture is high, expensive, operation technique is complicated.The minimal invasion pedicle screw-rod fixed system of domestic employing and supporting apparatus, substantially divide two large classes, a class is still similar to external pedicle screw, adopts the design of hollow pedicle nail, presets length and the radian of rod, there is above-mentioned identical defect; The non-hollow Pediculus arcus vertebrae screw of another kind of application, but using the locating effect that cannot reach hollow pedicle nail in this non-hollow Pediculus arcus vertebrae screw process, Pedicle Screw position is difficult to accurate control, some needs separately perforate just can complete the installation of vertical even rod, need repeatedly to load and unload attachment screw, extension rod and various sleeve, make operation technique very complicated.
Summary of the invention
The object of the invention is to solve above-mentioned technical problem and a kind of pedicle screw systems carrying out angular adjustment is provided.
For achieving the above object, the present invention adopts following technical scheme:
A kind of pedicle screw systems, comprise a fixing pedicle nail and can to break pedicle nail, described fixing pedicle nail is connected by an angle connecting rod with the described pedicle nail that breaks, the inner thread head that described angle connecting rod comprises a connecting rod and is connected with described connecting rod, described inner thread head is locked by locking device after being connected with the root of described fixing pedicle nail, and the other end of described connecting rod is compressed by a hold down gag through after the U-lag of the described pedicle nail root that breaks.
Described hold down gag is a compression plug screw, and described U-lag comprises two arc counterparts, and the inwall of described arc counterpart has the female thread adapted with described compression plug screw.
Described locking device is nut.
Pedicle screw systems of the present invention is by being connected a fixing pedicle nail by an angle connecting rod with the pedicle nail that can break, the inner thread head that described angle connecting rod comprises a connecting rod and is connected with described connecting rod, described inner thread head is locked by locking device after being connected with the root of described fixing pedicle nail, the other end of described connecting rod is compressed by a hold down gag through after the U-lag of the described pedicle nail root that breaks, thus facilitate in operation process, corresponding angle adjustment is carried out to this fixing pedicle nail, to adapt to the difference needs of performing the operation.
Accompanying drawing explanation
Figure 1 shows that the structural representation of a kind of pedicle screw systems that the embodiment of the present invention provides.
Detailed description of the invention
Below, in conjunction with example, substantive distinguishing features of the present invention and advantage are further described, but the present invention is not limited to listed embodiment.
Shown in Figure 1, the figure shows the structure of a kind of pedicle screw systems that the embodiment of the present invention provides.For convenience of explanation, illustrate only the part relevant with the embodiment of the present invention.
Refer to Fig. 1, a kind of pedicle screw systems, comprise a fixing pedicle nail 1 and can to break pedicle nail 2, described fixing pedicle nail 1 is connected by an angle connecting rod 3 with the described pedicle nail 3 that breaks, the inner thread head 31 that described angle connecting rod 3 comprises a connecting rod 31 and is connected with described connecting rod 31, described inner thread head 31 is locked by locking device 4 after being connected with the root of described fixing pedicle nail 1, and the other end of described connecting rod 31 is compressed by a hold down gag 5 through after the U-lag of the described pedicle nail root 2 that breaks.
Described hold down gag 5 is a compression plug screw, and described U-lag comprises two arc counterparts 21, and the inwall of described arc counterpart 21 has the female thread 22 adapted with described compression plug screw.
Described locking device 4 is nut.
Pedicle screw systems of the present invention is by being connected a fixing pedicle nail by an angle connecting rod with the pedicle nail that can break, the inner thread head that described angle connecting rod comprises a connecting rod and is connected with described connecting rod, described inner thread head is locked by locking device after being connected with the root of described fixing pedicle nail, the other end of described connecting rod is compressed by a hold down gag through after the U-lag of the described pedicle nail root that breaks, thus facilitate in operation process, corresponding angle adjustment is carried out to this fixing pedicle nail, to adapt to the difference needs of performing the operation.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (3)
1. a pedicle screw systems, it is characterized in that, comprise a fixing pedicle nail and can to break pedicle nail, described fixing pedicle nail is connected by an angle connecting rod with the described pedicle nail that breaks, the inner thread head that described angle connecting rod comprises a connecting rod and is connected with described connecting rod, described inner thread head is locked by locking device after being connected with the root of described fixing pedicle nail, and the other end of described connecting rod is compressed by a hold down gag through after the U-lag of the described pedicle nail root that breaks.
2. pedicle screw systems according to claim 1, it is characterized in that, described hold down gag is a compression plug screw, and described U-lag comprises two arc counterparts, and the inwall of described arc counterpart has the female thread adapted with described compression plug screw.
3. pedicle screw systems according to claim 1, it is characterized in that, described locking device is nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410392617.2A CN105326546A (en) | 2014-08-11 | 2014-08-11 | Pedicle screw system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410392617.2A CN105326546A (en) | 2014-08-11 | 2014-08-11 | Pedicle screw system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105326546A true CN105326546A (en) | 2016-02-17 |
Family
ID=55277469
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410392617.2A Pending CN105326546A (en) | 2014-08-11 | 2014-08-11 | Pedicle screw system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105326546A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0328883B1 (en) * | 1988-02-18 | 1994-07-06 | Howmedica GmbH | Supporting device for the human spinal column |
| CN1254545A (en) * | 1999-08-24 | 2000-05-31 | 潘显明 | Anti-rotation internal fixator for setting of bone fracture |
| CN2398981Y (en) * | 1999-12-15 | 2000-10-04 | 邹德威 | Reduction fixed bone orthopedic appts. |
| CN2798864Y (en) * | 2005-04-30 | 2006-07-26 | 金伟 | Internal fixation device for lumbar spondylolisthesis reposition |
| CN201299638Y (en) * | 2008-10-29 | 2009-09-02 | 张为 | Depth-adjustable internal fixation system used for reduction of spondylolisthesis |
| CN101601601A (en) * | 2009-07-14 | 2009-12-16 | 常州市康辉医疗器械有限公司 | Dynamic spinal internal fixation system |
| CN101803944A (en) * | 2010-03-26 | 2010-08-18 | 王春 | pedicle screw |
-
2014
- 2014-08-11 CN CN201410392617.2A patent/CN105326546A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0328883B1 (en) * | 1988-02-18 | 1994-07-06 | Howmedica GmbH | Supporting device for the human spinal column |
| CN1254545A (en) * | 1999-08-24 | 2000-05-31 | 潘显明 | Anti-rotation internal fixator for setting of bone fracture |
| CN2398981Y (en) * | 1999-12-15 | 2000-10-04 | 邹德威 | Reduction fixed bone orthopedic appts. |
| CN2798864Y (en) * | 2005-04-30 | 2006-07-26 | 金伟 | Internal fixation device for lumbar spondylolisthesis reposition |
| CN201299638Y (en) * | 2008-10-29 | 2009-09-02 | 张为 | Depth-adjustable internal fixation system used for reduction of spondylolisthesis |
| CN101601601A (en) * | 2009-07-14 | 2009-12-16 | 常州市康辉医疗器械有限公司 | Dynamic spinal internal fixation system |
| CN101803944A (en) * | 2010-03-26 | 2010-08-18 | 王春 | pedicle screw |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160217 |