CN106806010A - Thoracic and lumbar vertebral posterior fine motion fixed system - Google Patents
Thoracic and lumbar vertebral posterior fine motion fixed system Download PDFInfo
- Publication number
- CN106806010A CN106806010A CN201510870639.XA CN201510870639A CN106806010A CN 106806010 A CN106806010 A CN 106806010A CN 201510870639 A CN201510870639 A CN 201510870639A CN 106806010 A CN106806010 A CN 106806010A
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- China
- Prior art keywords
- fine motion
- button
- nail seat
- thoracic
- fixed system
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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
-
- 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
- A61B17/7002—Longitudinal elements, e.g. rods
-
- 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
- A61B17/7035—Screws or hooks, wherein a rod-clamping part and a bone-anchoring part can pivot relative to each other
- A61B17/704—Screws or hooks, wherein a rod-clamping part and a bone-anchoring part can pivot relative to each other the longitudinal element passing through a ball-joint in the screw head
-
- 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
- A61B17/84—Fasteners therefor or fasteners being internal fixation devices
- A61B17/86—Pins or screws or threaded wires; nuts therefor
- A61B17/8605—Heads, i.e. proximal ends projecting from bone
- A61B17/861—Heads, i.e. proximal ends projecting from bone specially shaped for gripping driver
-
- 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
- A61B17/84—Fasteners therefor or fasteners being internal fixation devices
- A61B17/86—Pins or screws or threaded wires; nuts therefor
- A61B17/8625—Shanks, i.e. parts contacting bone tissue
-
- 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
- A61B2017/564—Methods for bone or joint treatment
Abstract
The present invention relates to when orthopaedics medical instruments field, especially a kind of Spine dieases or damage, for the thoracic and lumbar vertebral posterior fine motion fixed system being fixed to Thoracolumbar disk.The system plays connection two the titanium alloy pitmans and the locking jackscrew for be locked titanium alloy pitman and fine motion pedicle screw of fine motion pedicle screw including two fine motion pedicle screws, one.Fine motion pedicle screw is made up of button and nail seat two parts, button is riveted with nail seat, and button is fixed by nail seat, and nail seat is formed with button and rotates width, button is set to limit direction fine rotation in nail seat, the bulb front portion of button is blocked in the closing in of nail seat front end.Thoracic and lumbar vertebral posterior fine motion fixed system of the invention takes into full account the anatomic characteristic of compatriots, and all design parameters can meet Thoracolumbar disk internal fixation operation demand directly from compatriots' spinal anatomy data, and fixed and recovery effects are good.
Description
Technical field
The present invention relates to when orthopaedics medical instruments field, especially a kind of Spine dieases or damage, for right
The thoracic and lumbar vertebral posterior fine motion fixed system that Thoracolumbar disk is fixed.
Background technology
Lumbar Fusion operation is the lumbar instability that treatment is triggered by the various diseases such as joint degeneration, disc herniation
General operation, the key of operation is the stability that internal fixation device to be implanted into ensures lesion lumbar vertebrae, is planted so as to give
The necessary condition of bone fusion.Its internal fixation device for using belongs to strong system, after implantation lumbar vertebrae, can cause quilt
Implantation sections mobility is too limited, so as to cause Adjacent segment degeneration and bone grafting to merge unreliable or even failure,
It is also possible to cause thrashing because internal stress concentrates excessive simultaneously, the phenomenons such as loosening, de- nail occurs.
In this case, the demand of fine motion internal fixation system is arisen at the historic moment.In nearest 30 years, the world is each
State scholar all constantly in research fine motion internal fixation system, but up to the present, the more ripe market that is applied to
Fine motion internal fixation system is simultaneously few, and main representative has two, is respectively Dynesys systems and Graf ligamentary systems.
But find that it is tight that Dynesys systems and Graf ligamentary systems all have comparing by the investigation of multidigit scholar
The defect of weight.Therefore, in order to meet market needs, it is necessary to design a kind of simple structure based on strong fixation
Reliable thoracic and lumbar vertebral posterior fine motion fixed system.
The content of the invention
A kind of defect of the present invention for existing product, there is provided simple and reliable for structure, excellent in mechanical performance, makes
With convenient, and suitable for degenerative lumbar or fusion convalescence, the thoracic and lumbar vertebral posterior fine motion of good stability is fixed
System.
The technical scheme is that：
A kind of thoracic and lumbar vertebral posterior fine motion fixed system, the system includes two fine motion pedicle screws, the company of rising
Connect the titanium alloy pitman of two fine motion pedicle screws effect and for titanium alloy pitman and the fine motion of being locked
The locking jackscrew of pedicle screw.
Described thoracic and lumbar vertebral posterior fine motion fixed system, fine motion pedicle screw is by button and nail seat two parts group
Into, button is riveted with nail seat, and button is fixed by nail seat, and nail seat is formed with button and rotates width,
Button is set to limit direction fine rotation in nail seat, the bulb front portion of button is blocked in the closing in of nail seat front end.
Described thoracic and lumbar vertebral posterior fine motion fixed system, button slewing area is controlled at -15~15 degree.
Described thoracic and lumbar vertebral posterior fine motion fixed system, button with nail seat riveting direction polish it is a pair of parallel
Plane, makes button firmly be riveted with nail seat.
Described thoracic and lumbar vertebral posterior fine motion fixed system, nail seat rear portion is provided with U-type groove, and fine motion pedicle screw leads to
Cross U-type groove to be fixedly connected with titanium alloy pitman, fine motion pedicle screw is with titanium alloy pitman for cylinder is contacted.
Described thoracic and lumbar vertebral posterior fine motion fixed system, nail seat rear portion is provided with female thread portion, female thread portion peace
Dress locking jackscrew, titanium alloy pitman is fixed by locking jackscrew.
Close up and be provided with two in button fine motion direction in described thoracic and lumbar vertebral posterior fine motion fixed system, the front end of nail seat
Individual inclined-plane.
Described thoracic and lumbar vertebral posterior fine motion fixed system, button and nail seat are a component, and the two is non-dismountable.
Described thoracic and lumbar vertebral posterior fine motion fixed system, using the fine motion pedicle screw of Ti-6Al-4V materials,
Titanium alloy pitman and locking jackscrew.
Compared with prior art, the present invention has the advantages that：
1st, the thoracic and lumbar vertebral posterior fine motion fixed system that the present invention is provided is by fine motion pedicle screw, connection fine motion vertebral arch
The titanium alloy pitman and locking jackscrew composition of root screw, locking jackscrew are used to fix titanium alloy pitman, its
Simple structure, reliability is high.
2nd, fine motion pedicle screw of the invention is made up of button and nail seat, and button is by riveting process and nail
Seat is fixed, button can in nail seat centered on riveting point along assigned direction slight oscillatory, button can be put
Dynamic angle control, at -15~15 degree, meets normal activity of the lumbar vertebrae fixed-segment in the case where operating mode is bent and stretched, and promotes
The reply of lesion lumbar vertebrae.
3rd, fine motion fixed system of the invention inherits the advantage of strong fixed system, good fixed effect is met
On the premise of realize fine motion, clinic was not used this characteristic at present.
4th, fine motion fixed system excellent in mechanical performance of the invention, with tissue good biocompatibility.
5th, the present invention meets human vertebra motion principle, contributes to the recovery of backbone normal function.
Brief description of the drawings
Fig. 1 is the thoracic and lumbar vertebral posterior fine motion fixed system structure diagram according to one embodiment of the invention.
Fig. 2 is that the titanium alloy pitman of the thoracic and lumbar vertebral posterior fine motion fixed system according to one embodiment of the invention is illustrated
Figure.
Fig. 3 (a)-Fig. 3 (b) is the lock of the thoracic and lumbar vertebral posterior fine motion fixed system according to one embodiment of the invention
Press closer a schematic diagram.Wherein, Fig. 3 (a) is top view；Fig. 3 (b) is front view.
Fig. 4 (a)-Fig. 4 (g) is the micro- of the thoracic and lumbar vertebral posterior fine motion fixed system according to one embodiment of the invention
Dynamic pedicle screw schematic diagram.Wherein, Fig. 4 (a) is fine motion pedicle screw overall structure figure；Fig. 4 (b)
It is button front view；Fig. 4 (c) is button side view；Fig. 4 (d) is nail seat top view；Fig. 4 (e)
It is nail seat front view；Fig. 4 (f) is nail seat upward view；Fig. 4 (g) is nail seat stereogram.
In figure, 1, titanium alloy pitman；2nd, fine motion pedicle screw；3rd, jackscrew is locked；4th, nail seat；5、
Button；6th, U-type groove；7th, female thread portion；8th, male thread portion；9 bulbs；10 close up；11 is oblique
Face.
Specific embodiment
Below, the present invention is further elaborated on reference to accompanying drawing.
Referring to Fig. 1, Fig. 2, Fig. 3 (a)-Fig. 3 (b), thoracic and lumbar vertebral posterior fine motion fixed system of the present invention, bag
Include the titanium alloy connection that two fine motion pedicle screws 2, play two fine motion pedicle screws 2 of connection
Rod 1 and the locking jackscrew 3 for be locked titanium alloy pitman 1 and fine motion pedicle screw 2.
As shown in Fig. 4 (a), Fig. 4 (b), Fig. 4 (c), fine motion pedicle screw 2 is by button 5 and nail
Seat 4 two parts composition, button 5 and nail seat 4 riveting is integrally formed, button 5 can nail seat 4 it is interior
Direction fine rotation is limited, the closing in 10 of the front end of nail seat 4 blocks the front portion of bulb 9 of button 5, prevents bulb
Nail 5 is pulled out in vivo, simple and reliable for structure.The male thread portion 8 of fine motion pedicle screw 2 is designed to cone
Shape (range of taper is 1~3 degree), can effectively improve the intensity of the root of fine motion pedicle screw 2, fine motion vertebra
The root of pedicle screw 2 is always the position of whole system stress concentration, and this design can reduce fine motion pedicle of vertebral arch
Risk of the screw 2 from fracture of root.
As shown in Fig. 4 (b), Fig. 4 (c), button 5 polished with the riveting of nail seat 4 direction it is a pair of parallel
Plane, can improve button 5 and rivet firmness with nail seat 4.
As shown in Fig. 4 (a), Fig. 4 (d), Fig. 4 (e), Fig. 4 (f), Fig. 4 (g), the rear portion of nail seat 4 is opened
There is U-type groove 6, fine motion pedicle screw 2 is fixedly connected by U-type groove 6 with titanium alloy pitman 1, fine motion
Pedicle screw 2 is with titanium alloy pitman 1 for cylinder is contacted, it is ensured that solid and reliable.In the rear portion of nail seat 4 is provided with
Threaded portion 7, for being screwed into locking jackscrew 3, the titanium alloy fixed in U-type groove 6 by locking jackscrew 3 connects
Take over the baton 1.Button 5 loads from the rear end of nail seat 4, and the front end of nail seat 4 closes up 10 in the fine motion direction of button 5
(rotation direction) is provided with two inclined-planes 11, controls the fine motion angle of button 5.According between human body lumbar motion segment
Normal activity angle, the fine motion angle control between -15~15 degree the (left-right rotation i.e. after normal mounting
Angle).
Wherein, button of the invention 5 is fixed with nail seat 4 using riveting, both provides certain to button 5
Fixation, forms a rotation width again, realizes the fine motion in vivo of button 5, enables lumbar vertebrae fixed-segment
Enough have a slight flexion-extension motion degree, change it is strong be fixed on lumbar motion segment be entirely limited situation.
When the implantation of thoracic and lumbar vertebral posterior fine motion fixed system is carried out, the diseased segment of patient's vertebra is first determined, according to
Titanium alloy pitman 1, is then pressed into U-type groove 6 by demand implantation fine motion pedicle screw 2, is finally screwed into lock
Silk 3 is pressed closer, implantation process is safe and efficient.
Fine motion fixed system of the invention can be effectively improved implanted device stress in vivo, reduce stress collection
In, stress shielding is reduced, and appropriate flexion-extension motion degree can be provided to fixed-segment.By simulation analysis skill
Art predicts that under Human Physiology load the stress level of implanted device is lower than strong fixation.
Embodiment result shows that thoracic and lumbar vertebral posterior fine motion fixed system of the invention is strong solid for current main flow
Determine the postoperative complications problem of system presence, with reference to body biomechanicses correlation theory, proposed from amechanical angle
The solution for rebuilding human body lumbar vertebrae stabilization.The system has taken into full account the anatomic characteristic of compatriots, Suo Youshe
Meter parameter can meet Thoracolumbar disk internal fixation operation demand directly from compatriots' spinal anatomy data, fixed and extensive
Work well again.
Claims (9)
1. a kind of thoracic and lumbar vertebral posterior fine motion fixed system, it is characterised in that the system includes two fine motion pedicles of vertebral arch
Screw, a titanium alloy pitman for playing two fine motion pedicle screws of connection and for the titanium conjunction that is locked
The locking jackscrew of golden pitman and fine motion pedicle screw.
2. according to the thoracic and lumbar vertebral posterior fine motion fixed system described in claim 1, it is characterised in that fine motion vertebral arch
Root screw is made up of button and nail seat two parts, and button is riveted with nail seat, and button is fixed by nail seat,
And nail seat is formed with button and rotates width, button is set to limit direction fine rotation in nail seat, before nail seat
The bulb that button is blocked in the closing at end is anterior.
3. according to the thoracic and lumbar vertebral posterior fine motion fixed system described in claim 2, it is characterised in that button turns
Dynamic scope control is at -15~15 degree.
4. according to the thoracic and lumbar vertebral posterior fine motion fixed system described in claim 2, it is characterised in that button exists
A pair of parallel plane is polished with nail seat riveting direction, button is firmly riveted with nail seat.
5. according to the thoracic and lumbar vertebral posterior fine motion fixed system described in claim 2, it is characterised in that nail seat rear portion
U-type groove is provided with, fine motion pedicle screw is fixedly connected by U-type groove with titanium alloy pitman, fine motion pedicle of vertebral arch
Screw is with titanium alloy pitman for cylinder is contacted.
6. according to the thoracic and lumbar vertebral posterior fine motion fixed system described in claim 2, it is characterised in that nail seat rear portion
Female thread portion is provided with, female thread portion installation locking jackscrew fixes titanium alloy pitman by locking jackscrew.
7. according to the thoracic and lumbar vertebral posterior fine motion fixed system described in claim 2, it is characterised in that before nail seat
Close up and be provided with two inclined-planes in button fine motion direction in end.
8. according to the thoracic and lumbar vertebral posterior fine motion fixed system described in claim 2, it is characterised in that button and
Nail seat is a component, and the two is non-dismountable.
9. according to the thoracic and lumbar vertebral posterior fine motion fixed system described in claim 1, it is characterised in that use
The fine motion pedicle screw of Ti-6Al-4V materials, titanium alloy pitman and locking jackscrew.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510870639.XA CN106806010A (en) | 2015-12-02 | 2015-12-02 | Thoracic and lumbar vertebral posterior fine motion fixed system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510870639.XA CN106806010A (en) | 2015-12-02 | 2015-12-02 | Thoracic and lumbar vertebral posterior fine motion fixed system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106806010A true CN106806010A (en) | 2017-06-09 |
Family
ID=59109125
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510870639.XA Pending CN106806010A (en) | 2015-12-02 | 2015-12-02 | Thoracic and lumbar vertebral posterior fine motion fixed system |
Country Status (1)
| Country | Link |
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| CN (1) | CN106806010A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109171924A (en) * | 2018-08-31 | 2019-01-11 | 厉锋 | Fixed appliance in lumbar vertebral posterior |
| CN114343815A (en) * | 2022-03-17 | 2022-04-15 | 长沙市第三医院 | Multi-plane cortical bone screw, bone positioning device and positioning and using method |
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| CN201977917U (en) * | 2010-11-11 | 2011-09-21 | 周建明 | Non-fusion elastic rod internal fixing system |
| CN102551856A (en) * | 2011-01-24 | 2012-07-11 | 上海锐植医疗器械有限公司 | Internal fixing system capable of dilating wound of spinal column in self-rotation manner |
| CN102551857A (en) * | 2012-02-07 | 2012-07-11 | 陈远明 | Universal vertebral pedicle screw system capable of moving slightly |
| CN102596068A (en) * | 2009-09-11 | 2012-07-18 | 捷迈脊柱有限公司 | Spinal stabilization system |
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| CN103687560A (en) * | 2011-05-26 | 2014-03-26 | 艾泽特奇有限责任公司 | Bone screw system with connecting portion |
| CN203777035U (en) * | 2014-02-28 | 2014-08-20 | 闻泰医疗科技（上海）有限公司 | Pedicle screw |
| CN205268261U (en) * | 2015-12-02 | 2016-06-01 | 东北大学 | Chest lumbar vertebrae way of escape fine motion fixing system |
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|---|---|---|---|---|
| CN101031248A (en) * | 2004-08-27 | 2007-09-05 | 黑石医药股份有限公司 | Multi-axial connection system |
| CN201492489U (en) * | 2009-08-17 | 2010-06-02 | 北京市富乐科技开发有限公司 | Spine dynamic supporting and fixing system |
| CN102596068A (en) * | 2009-09-11 | 2012-07-18 | 捷迈脊柱有限公司 | Spinal stabilization system |
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| CN201977917U (en) * | 2010-11-11 | 2011-09-21 | 周建明 | Non-fusion elastic rod internal fixing system |
| CN102551856A (en) * | 2011-01-24 | 2012-07-11 | 上海锐植医疗器械有限公司 | Internal fixing system capable of dilating wound of spinal column in self-rotation manner |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109171924A (en) * | 2018-08-31 | 2019-01-11 | 厉锋 | Fixed appliance in lumbar vertebral posterior |
| CN114343815A (en) * | 2022-03-17 | 2022-04-15 | 长沙市第三医院 | Multi-plane cortical bone screw, bone positioning device and positioning and using method |
| US11839412B2 (en) | 2022-03-17 | 2023-12-12 | The Third Hospital Of Changsha | Multi-plane cortical bone screw, bone positioning device and positioning and use method |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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Application publication date: 20170609 |