CN103860246B - Pedicle screw and Thoracolumbar disk Anterior fixation system - Google Patents
Pedicle screw and Thoracolumbar disk Anterior fixation system Download PDFInfo
- Publication number
- CN103860246B CN103860246B CN201210537131.4A CN201210537131A CN103860246B CN 103860246 B CN103860246 B CN 103860246B CN 201210537131 A CN201210537131 A CN 201210537131A CN 103860246 B CN103860246 B CN 103860246B
- Authority
- CN
- China
- Prior art keywords
- pad
- fixation system
- pedicle screw
- screw
- thoracolumbar disk
- 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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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
- A61B17/7001—Screws or hooks combined with longitudinal elements which do not contact vertebrae
- A61B17/7044—Screws or hooks combined with longitudinal elements which do not contact vertebrae also having plates, staples or washers bearing on the vertebrae
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
- A61B17/7049—Connectors, not bearing on the vertebrae, for linking longitudinal elements together
Abstract
The present invention provides a kind of pedicle screw and Thoracolumbar disk Anterior fixation system.Pedicle screw according to the present invention includes having female head and have externally threaded screw rod.Described pedicle screw also includes pad, described screw rod is provided with circumferential recess in the one end bordering on described head, pad is buckled in described circumferential recess, and described pad can rotate relative to screw rod around the longitudinal axis of screw rod, and the upper surface of pad is resisted against the basal surface of head.Pad is pressed in vertebral body while being screwed into by the pedicle screw according to the present invention, reduces operation technique difficulty, alleviates the damage to patient, saves operating time, increases the firmness that implant is combined with vertebral body.Thoracolumbar disk Anterior fixation system according to the present invention includes plug screw, pitman and above-mentioned pedicle screw.
Description
Technical field
The present invention relates to orthopaedics implant field, be specifically related to spinal surgery, such as treating
Or the implant field of the spinal disease of reparation patient, particularly to pedicle screw and Thoracolumbar disk
Anterior fixation system.
Background technology
The spinal surgery of the spinal disease for the treatment of or reparation patient has the history of decades.
At present, clinically for internal fixation of spine orthopedic, lumbar vertebra compression fracture, lumbar-thoracic spine tumor with
And the disease such as other deformity is when needing to carry out thoracic spine surgery internal fixation treatment, the usual root of doctor
Front road or the method for posterior approach approach is selected according to patient profiles.When before spinal column, center pillar unstable,
When Vertebral body, tuberculosis, tumor, Anterior fixation is used can substantially to increase spinal column at each
Stability on direction and reject pathological changes, reinvent spinal column physiology and appearance.
Anterior decompression and fusion are except reaching to reduce pressure in addition to purpose, moreover it is possible to recover intervertebral disc and vertebra
Between the height in hole, rebuild Thoracolumbar disk stability.Before front road bone grafting and interior secure bond can be spinal column
Line structure provides strong support, and makes the stability that spinal column recovery is enough.Between the vertebral body of front road
Merging compared with Posterior Fusion, contact surface bigger between vertebral body and abundant blood supply provide more
Preferably implant bed, thus the having higher success rate of fusion.After posterior fusion is failed,
Anterior stabilization art often becomes even more ideal and the most uniquely selects.
As it is shown in figure 9, the Thoracolumbar disk of routine front road fixed system includes: pedicle screw 4 ',
Pad 5 ', plug screw (not shown), horizontal-associate device 3 ', pitman 1 ' and 2 '.By assembling so
Nail-stick system be allowed to be combined in a fixed frame carrys out stable frame with vertebral body and need treatment
Spinal segments.
Chinese utility model patent 99232520X discloses a kind of Thoracolumbar disk front road replacement and fixation dress
Putting, it includes strut, vertebral body screw, cross-bridges intermediate plate and door shape sole, and wherein support bar is by even
Adapter docking expansion link composition, steady arm is connected by trip bolt is vertical with vertebral body screw.
Chinese utility model patent CN 03236836.4 discloses another kind of anterior spinal multi-segmental
In fixing orthotic device, this fixing device comprises several and comprises pedicle of vertebral arch for be screwed into vertebral body
Screw, pitman, tightening plug screw and pad, the vertebral body screw being installed on each pad is at least
There is one for Universal screw nail.
Chinese utility model patent 200920222845.X discloses another diplopore both feet and dissects shape
Traffic stud bar system before pad and Thoracolumbar disk, this pad is the double arc clout body of a shape of a saddle, its length
With the cross section on width all be bending circular arc, have with corpus vertebrae surface of bone coincide
Vertebral anatomy surface, and before this Thoracolumbar disk, traffic stud bar system includes 4 pedicle screws, 2 institutes
State pad, 2 pitmans, 1-2 horizontal-associate devices.
Chinese utility model patent 201120387224.4 is solid in disclosing the front road of another Thoracolumbar disk
Determine system, including first, second connecting rod of pair of parallel setting, be used for connecting this first,
A pair contiguous block of second connecting rod, and the multiple screws being located on first, second connecting rod, its
Increasing circular arc pad and circular gasket on the basis of conventional pedicle screw fixation system, pad is suitable for
In the screw angle providing 10 °.
In existing Thoracolumbar disk Anterior fixation system as shown in Figure 9, need to be first by pad during operation
Sheet 5 ' knocks in vertebral body, then is screwed in vertebral body in the pedicle screw 4 ' hole along pad 5 '.Beat
The more difficult grasp of dynamics of pad, light strikes to enter, and having weighed can Spinal Cord.
Summary of the invention
Present invention aim to address this problem.To this end, the present invention proposes a kind of for breast waist
Pedicle screw in vertebra Anterior fixation system.Described pedicle screw includes having female thread
Head and there is externally threaded screw rod, it is characterised in that described pedicle screw also include pad
Sheet, described screw rod is provided with circumferential recess in the one end bordering on described head, and pad is buckled in described
In circumferential recess, described pad can rotate relative to screw rod around the longitudinal axis of screw rod, and described
The basal surface of head is resisted against the upper surface of described pad.The pedicle screw of the present invention simplify and
Reduce operation technique difficulty, because can be by pad while being screwed into pedicle screw during operation
In press-in vertebral body, two original steps can be combined into a step, and without beaing pad again,
Alleviate the damage to patient, save operating time.
Preferably, the basal surface of described head is convex spherical, and the upper surface of described pad is recessed ball
Face.At this under structure, owing to the bottom sphere of pedicle screw and the top sphere of pad are automatic
Centering press-in, it combines dense, and a fixing rear phase will not produce unstable phenomenon.It addition,
Increase the firmness that implant is combined with vertebral body.When being screwed into pedicle screw because of the opposing of pad
Power and make the axially increased bone density of combination of bone thread and vertebral body.
Preferably, the upper surface of described pad is radially provided with elastic deformation groove.
The present invention also provides for a kind of Thoracolumbar disk Anterior fixation system, and it includes plug screw, pitman,
It is characterized in that, described Thoracolumbar disk Anterior fixation system also includes being fixed on pitman many
Individual pedicle screw as above, described pedicle screw passes through female thread and the phase of its head
The plug screw answered coordinates and is fixed on pitman.
It is orthopedic that the internal fixation system of the present invention can be used for scoliosis Anterior fixation, or Thoracolumbar disk
The diseases such as fracture, lumbar-thoracic spine tumor and other deformity of spine need to carry out anterior spinal list
Sections or the treatment of multi-segmental surgical menopause.
Basic inventive embodiment, described Thoracolumbar disk Anterior fixation system is waist thoracic vertebra front road vertebra
Merging internal fixation system between body, described waist thoracic vertebra front road intervertebral fusion internal fixation system includes two
Individual pitman, and also include installing at least one the horizontal-associate device between said two pitman, often
Multiple described pedicle screw all it is fixed with on individual pitman.
Basic inventive embodiment, described Thoracolumbar disk Anterior fixation system is solid in anterior spinal
Determining double stick orthopedic system, it includes two pitmans, and each pitman is fixed with multiple institute
State pedicle screw.
Basic inventive embodiment, described Thoracolumbar disk Anterior fixation system is solid in anterior spinal
Order rod orthopedic system, it includes single pitman.
The advantage of the present invention is to reduce operation technique difficulty, alleviates the damage to patient, saves hands
The art time, increase the firmness that implant is combined with vertebral body.
Accompanying drawing explanation
By the detailed description with reference to the accompanying drawings embodiment of the present invention carried out, the spy of the present invention
Levy and advantage will be apparent from.In the drawings:
Fig. 1 is the schematic diagram of the Thoracolumbar disk Anterior fixation system of the embodiment of the present invention, its display
For Thoracolumbar disk front road intervertebral fusion internal fixation system.
Fig. 2 is the schematic diagram of the pedicle screw of the embodiment of the present invention.
Fig. 3 is the schematic diagram in the case of the pedicle screw shown in Fig. 2 removes pad.
Fig. 4 is the schematic diagram of the pad of the pedicle screw shown in Fig. 2.
Fig. 5 is the schematic diagram of another embodiment of the pad of the present invention.
Fig. 6 is the schematic diagram of another embodiment of the pad of the present invention.
Fig. 7 is the schematic diagram fixing double stick orthopedic system in anterior spinal.
Fig. 8 is the schematic diagram of fixing single rod orthopedic system in anterior spinal.
Fig. 9 is the schematic diagram of the anterior spinal nail-stick system of prior art.
Reference numerals list
1, the head 2 of pedicle screw, plug screw 3, pitman 4, horizontal-associate device
5, the screw rod of pad 6, pedicle screw
7, convex spherical 8, circumferential recess
9, concave spherical surface 10, elastic groove 11, stitch
1 ' pitman 2 ' pitman 3 ' horizontal-associate device 4 ' pedicle screw 5 ' pad
Detailed description of the invention
Embodiments of the invention are described with reference to the accompanying drawings.
Fig. 1 shows an embodiment of the Thoracolumbar disk Anterior fixation system of the present invention.At this
In example, Thoracolumbar disk Anterior fixation system is Thoracolumbar disk front road intervertebral fusion internal fixation system.
This system includes four pedicle screws, two pitmans 3 and being arranged between pitman 3
One horizontal-associate device 4, each pedicle screw passes through the female thread of its head 1 and corresponding bolt 2
External screw thread coordinates and is individually fixed on two pitmans 3, and each pitman 3 is fixed with two
Individual pedicle screw.
Fig. 2 shows the pedicle screw of the embodiment of the present invention.As in figure 2 it is shown, the present invention is real
The pedicle screw executing example is made up of two parts, i.e. pad 5 and pedicle screw.Such as Fig. 3
Shown in, pedicle screw includes head 1 and screw rod 6, and head 1 has female thread, and screw rod 6
The thread root connected with head is provided with circumferential recess 8.It addition, the basal surface 7 of head 1 constructs
Become convex spherical.
Fig. 4 shows the embodiment of pad 5.In this example, pad 5 is circular, along circular
Circumference have several stitch.It addition, the upper surface 9 of pad 5 is configured to concave spherical surface,
Cooperate with the basal surface of the head 1 with pedicle screw.It is additionally provided with bullet on the upper surface of pad 5
Property groove 10.
Fig. 5-Fig. 6 shows the other embodiments of pad.In Figure 5, pad 5 is square,
There are 4 stitch, are arranged in four corners.In figure 6, pad 5 is also square,
Also there are 4 stitch, but are arranged in the centre position of four edges.
Pad 5 screws in, along with screw rod 6 slowly along the screw tip of the screw rod 6 of pedicle screw
Thicker, the elastic groove 10 in pad 5 deforms, after arriving at the circumferential recess 8 of thread root,
Elastic groove 10 recovers initial condition, makes pad 5 be buckled in circumferential recess 8, thus and vertebra
Pedicle screw is integrally forming, but still can be relative to screw rod 6 around the longitudinal axis of pedicle screw
Rotating freely, the basal surface 7 of head 1 is resisted against the upper surface 9 of pad 5 simultaneously.
During operation, by a custom-designed upper crow-bar locating shim 5, and it is screwed into vertebral arch
Root screw, is allowed to be combined with vertebral body.When being screwed into pedicle screw, due to pedicle screw
The convex spherical 7 of the screw rod 6 and concave spherical surface 9 of pad 5 leans and energy between screw rod 6 and pad
Enough rotate against, so pad 5 is applied pressure, make the nail foot 11 on pad be slowly pressed into
In vertebral body.
The pedicle screw of the present invention can be additionally used in different Thoracolumbar disk Anterior fixation systems, as
Double stick orthopedic system and Fig. 8 is fixed in the anterior spinal only including two pitmans shown in Fig. 7
Fixing single rod orthopedic system in the shown anterior spinal including single pitman.
The present invention is by the pedicle screw in conventional Thoracolumbar disk Anterior fixation system and pad synthesis
Integrally, a kind of novel vertebral pedicle bolt is formed.This structure simplifies and reduces operation technique difficulty.
Former operating procedure is that pad is first knocked in vertebral body, then is screwed in pedicle screw hole along pad
In vertebral body, beaing the more difficult grasp of dynamics of pad, light strike to enter, having weighed can Spinal Cord.
Be now be screwed into novel vertebral body screw while pad is pressed in vertebral body, two steps synthesize a step,
Without beaing pad, alleviate the damage to patient, save operating time.
2, the firmness that implant is combined is increased with vertebral body.When being screwed into novel vertebral body screw because of pad
The resistance of sheet makes bone thread axially can increase bone density with the combination of vertebral body, and a fixing rear phase is not
Unstable phenomenon can be produced.
It will be understood by those skilled in the art that above description is exemplary.Without departing substantially from this
In the case of the thought of invention and scope, the present invention can be made multiple by those skilled in the art
Modifications and variations.
Claims (5)
1. pedicle screw, it includes having female head and has externally threaded screw rod,
It is characterized in that, described pedicle screw also includes pad, and described screw rod is bordering on described head
One end be provided with circumferential recess, pad is buckled in described circumferential recess, and described pad can be around
The longitudinal axis of screw rod rotates relative to screw rod, and the basal surface of described head is resisted against described pad
The upper surface of sheet, the basal surface of described head is convex spherical, and the upper surface of described pad is recessed ball
Face, and the upper surface of described pad is radially provided with elastic groove.
2. Thoracolumbar disk Anterior fixation system, it includes plug screw, pitman, it is characterised in that
It is multiple such as claim that described Thoracolumbar disk Anterior fixation system also includes being fixed on pitman
Pedicle screw described in 1, described pedicle screw passes through the female thread of its head and corresponding spiral shell
Plug coordinates and is fixed on pitman.
Thoracolumbar disk Anterior fixation system the most according to claim 2, it is characterised in that
Described Thoracolumbar disk Anterior fixation system is waist thoracic vertebra front road intervertebral fusion internal fixation system, institute
State waist thoracic vertebra front road intervertebral fusion internal fixation system and include two pitmans, and also include installing
At least one horizontal-associate device between said two pitman, each pitman is fixed with multiple
Described pedicle screw.
Thoracolumbar disk Anterior fixation system the most according to claim 2, it is characterised in that
Described Thoracolumbar disk Anterior fixation system is to fix double stick orthopedic system in anterior spinal, and it includes
Two pitmans, each pitman is fixed with multiple described pedicle screw.
Thoracolumbar disk Anterior fixation system the most according to claim 2, it is characterised in that
Described Thoracolumbar disk Anterior fixation system is fixing single rod orthopedic system in anterior spinal, and it includes
Single pitman.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210537131.4A CN103860246B (en) | 2012-12-12 | 2012-12-12 | Pedicle screw and Thoracolumbar disk Anterior fixation system |
| PCT/CN2013/088731 WO2014090114A1 (en) | 2012-12-12 | 2013-12-06 | Pedicle screw and anterior thoracic/lumbar vertebral internal fixation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210537131.4A CN103860246B (en) | 2012-12-12 | 2012-12-12 | Pedicle screw and Thoracolumbar disk Anterior fixation system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103860246A CN103860246A (en) | 2014-06-18 |
| CN103860246B true CN103860246B (en) | 2016-12-21 |
Family
ID=50899661
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210537131.4A Active CN103860246B (en) | 2012-12-12 | 2012-12-12 | Pedicle screw and Thoracolumbar disk Anterior fixation system |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN103860246B (en) |
| WO (1) | WO2014090114A1 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104970874B (en) * | 2015-07-24 | 2018-07-20 | 王清 | Anatomical form pedicle screw |
| CN107041800A (en) * | 2017-01-21 | 2017-08-15 | 张洪剑 | The artificial spinal devices of New type detachable |
| CN109171924A (en) * | 2018-08-31 | 2019-01-11 | 厉锋 | Fixed appliance in lumbar vertebral posterior |
| CN111358546B (en) * | 2018-12-26 | 2023-10-17 | 北京纳通医学科技研究院有限公司 | Screw plug mounting device |
| CN109875668A (en) * | 2019-04-03 | 2019-06-14 | 广东施泰宝医疗科技有限公司 | Assembly type Thoracolumbar disk Anterior fixation system |
| CN110916785B (en) * | 2019-12-17 | 2024-01-12 | 浙江德康医疗器械有限公司 | Thoracolumbar anterior system |
| CN111616787B (en) * | 2020-05-23 | 2022-01-18 | 上海市闵行区中心医院 | Prestress anti-back bone screw assembly |
| CN111616785B (en) * | 2020-05-23 | 2022-01-28 | 暨南大学 | Bone screw capable of preventing retreat and slowly releasing nutrient solution |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5269784A (en) * | 1991-12-10 | 1993-12-14 | Synthes (U.S.A.) | Screw nut for plate osteosynthesis |
| US5690629A (en) * | 1996-04-24 | 1997-11-25 | Acromed Corporation | Apparatus for maintaining vertebrae of a spinal column in a desired spatial relationship |
| US5947969A (en) * | 1998-10-19 | 1999-09-07 | Third Millennium Engineering, Llc | Rotatable locking vertebral body screw, staple and rod assembly |
| CN101146486A (en) * | 2005-03-24 | 2008-03-19 | 德普伊斯派尔公司 | Low profile spinal tethering devices |
| CN201537127U (en) * | 2009-09-22 | 2010-08-04 | 郭谦 | Dissection gasket with double holes and double feet and anterior thoracolumbar screw rod system |
| CN203017074U (en) * | 2012-12-12 | 2013-06-26 | 上海微创骨科医疗科技有限公司 | Pedicle screw and thoracolumbar spine anterior cervical plate system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1356790A3 (en) * | 1996-02-16 | 2004-01-14 | Smith & Nephew, Inc. | Graft Anchor |
-
2012
- 2012-12-12 CN CN201210537131.4A patent/CN103860246B/en active Active
-
2013
- 2013-12-06 WO PCT/CN2013/088731 patent/WO2014090114A1/en active Application Filing
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5269784A (en) * | 1991-12-10 | 1993-12-14 | Synthes (U.S.A.) | Screw nut for plate osteosynthesis |
| US5690629A (en) * | 1996-04-24 | 1997-11-25 | Acromed Corporation | Apparatus for maintaining vertebrae of a spinal column in a desired spatial relationship |
| US5947969A (en) * | 1998-10-19 | 1999-09-07 | Third Millennium Engineering, Llc | Rotatable locking vertebral body screw, staple and rod assembly |
| CN101146486A (en) * | 2005-03-24 | 2008-03-19 | 德普伊斯派尔公司 | Low profile spinal tethering devices |
| CN201537127U (en) * | 2009-09-22 | 2010-08-04 | 郭谦 | Dissection gasket with double holes and double feet and anterior thoracolumbar screw rod system |
| CN203017074U (en) * | 2012-12-12 | 2013-06-26 | 上海微创骨科医疗科技有限公司 | Pedicle screw and thoracolumbar spine anterior cervical plate system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103860246A (en) | 2014-06-18 |
| WO2014090114A1 (en) | 2014-06-19 |
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| CB02 | Change of applicant information |
Address after: 201318 Shanghai city Pudong New Area zhouputown Tianxiong road 588 Lane No. twenty-third 1-28 Applicant after: Shanghai MicroPort Orthopedics Co., Ltd. Applicant after: SUZHOU MINIMALLY-INVASIVE SPINE TRAUMA MEDICAL TECHNOLOGY CO., LTD. Address before: 201318 Shanghai city Pudong New Area zhouputown Tianxiong road 588 Lane No. twenty-third 1-28 Applicant before: Shanghai MicroPort Orthopedics Co., Ltd. Applicant before: Suhzou Health Medical Treatment Apparatus Co.,Ltd. |
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| COR | Change of bibliographic data | ||
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| TR01 | Transfer of patent right |
Effective date of registration: 20181213 Address after: 215000 Workshop B, No. 112 Fangzhong Street, Suzhou Industrial Park, Suzhou City, Jiangsu Province Patentee after: Suzhou Minimally Invasive Spinal Trauma Medical Technology Co., Ltd. Address before: 201318 twenty-third, 1-28 Lane 588, Tian Xiong Road, Zhou Pu town, Pudong New Area, Shanghai Co-patentee before: Suzhou Minimally Invasive Spinal Trauma Medical Technology Co., Ltd. Patentee before: Shanghai MicroPort Orthopedics Co., Ltd. |