CN201542728U - Posterior atlantoaxial non-fusion internal fixation device - Google Patents
Posterior atlantoaxial non-fusion internal fixation device Download PDFInfo
- Publication number
- CN201542728U CN201542728U CN2009200748572U CN200920074857U CN201542728U CN 201542728 U CN201542728 U CN 201542728U CN 2009200748572 U CN2009200748572 U CN 2009200748572U CN 200920074857 U CN200920074857 U CN 200920074857U CN 201542728 U CN201542728 U CN 201542728U
- Authority
- CN
- China
- Prior art keywords
- universal
- pitman
- atlas
- dentata
- head
- 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
Links
Images
Abstract
The utility model relates to the technical field of medical instruments, particularly to a posterior atlantoaxial non-fusion internal fixation device used for the bone surgery. The device comprises four vertebral arch pedicle universal screws (1), an atlas connecting bar (2), an axis connecting bar (3) and a universal fixing bar (4), wherein the vertebral arch pedicle universal screws are fixed at the left and the right ends of the atlas connecting bar (2) and the axis connecting bar (3) respectively, and the atlas connecting bar and the axis connecting bar are connected into a whole through the cylindrical hollow passage (413) at the head part (41) of the universal fixing bar (4) and the square column-shaped hollow passage (412) at the body part (42) of the universal fixing bar (4) respectively. The posterior atlantoaxial non-fusion internal fixation device has simple structure, is convenient to use, and retains the function of the atlas joints simply by connecting and fixing the atlas and the axis. The universal fixing bar limits the flexion and extension of the atlantoaxial vertebrae, thereby achieving the restoration purpose, retaining the normal physiological function to the maximum extent and reducing body injury and patient's pain because of no need of autograft fusion.
Description
Technical field
This utility model relates to technical field of medical instruments, is a kind of Orthopeadic Surgery way of escape extensive region dentata non-integration inner fixer.
Background technology
Atlas and dentata are special vertebra joints in the cervical vertebra, it is again the important component part of pillow extensive region pivot complex, articulatio atlantoepistrophica is can be with tooth prominent be that the axle center is done axle in the larger context and rotatablely moved, and accounts for whole cervical vertebra the over half of scope that rotatablely move, and its spinfunction is very important to human body.But extensive region, dentata also are the predilection sites of diseases such as mechanical damage, congenital malformation, tumor, tuberculosis and rheumatoid, and it is the importance of spinal surgery treatment that the extensive region dentata shakiness that therefore causes causes spinal compression.
Way of escape fusion is to solve the unsteady main means of extensive region dentata, traditional fusion method has: rest the head on the neck fusion 1.: with fixing upper cervical vertebra of nail rod (plate) and occipital bone, be aided with bigger ilium bone grafting again, this method is the classical fusion of earliest period, but wound is big, hemorrhage many, internal fixation mortality height, fusion rate of bone graft is lower, though the technological improvement of internal fixation has improved fusion rate of bone graft recently, but this method is to be cost to sacrifice atlantooccipital joint and articulatio atlantoepistrophica even more multiarticulate function, and the spinfunction of postoperative cervical vertebra is limited obviously; 2. extensive region dentata fusion: carry out Atlantoaxial internal fixation by various internal fixation method (Gallie technology, Brooks technology, Mager1 technology, Harms technology etc.), and bone grafting merges between the dentata of extensive region, reach effect steady in a long-term.Raising along with the internal fixation technology, its stability is well promoted, increased bone graft fusion, this method can avoid resting the head on the neck fusion than the long segment internal fixation, and reservation atlantooccipital joint function, be present main amalgamation mode, cause certain wound, and be that cost makes the spinfunction of postoperative cervical vertebra limited obviously to sacrifice the articulatio atlantoepistrophica function but still need merge from the body bone grafting.
Summary of the invention
The purpose of this utility model provides a kind of extensive region dentata stability of both can having kept, and can keep extensive region dentata rotary moveable function again and not need extensive region dentata non-integration inner fixer from the body bone grafting merges.
This utility model is made up of 4 the universal screws of pedicle of vertebral arch, atlas pitman, dentata pitman and universal fixed bars.The universal screw of pedicle of vertebral arch is made up of nail body, the head of a nail and nut, head of a nail hollow, head of a nail both sides are provided with the U-shaped groove, head of a nail inwall is provided with female thread, the external screw thread coupling of this female thread and nut, nut hollow, the inner chamber cross section is polygon, be generally hexagon, so that it is screwed in the head of a nail with the interior hexagonal spiral shell cutter that is complementary with it; The atlas pitman is the solid cylindrical round metal bars, divide three sections of left, center, right, interlude is thicker, be convexly curved, about two sections summaries thin, isometric grade is thick, and the width coupling of the universal screw head of a nail of its external diameter and pedicle of vertebral arch both sides U-shaped groove is individually fixed in atlas pitman two ends so that be embedded in this U-shaped groove with two universal screws of pedicle of vertebral arch; The dentata pitman also is the solid metal rod, divides three sections of left, center, right, and interlude is thicker, and it is square column type; About two sections cylindrical, isometric grade is thick, the width of its external diameter and universal screw head of a nail both sides U-shaped groove coupling is individually fixed in dentata pitman two ends so that be embedded in this U-shaped groove with other two universal screws of pedicle of vertebral arch; Universal fixed bar is used to connect atlas pitman and dentata pitman, it is made up of head and body two parts, head is the universal bearing structure of being made up of the universal joint of hollow oblate spheroid shape shell and Qi Nei, the two sides is provided with circular open before and after the oblate spheroid shape shell, it is spherical that universal joint is, can in oblate spheroid shape shell, rotate, the cylinder type hollow passage that connects before and after the centre is provided with, the circular open of the circular open of passage and oblate spheroid shape shell can transfer to same direction, the diameter of universal joint cylinder type hollow passage and atlas pitman interlude cylinder external diameter coupling is so that insert the interlude of atlas pitman in it and slidably adjust the position; The body of universal fixed bar is square column type or other shapes, the square column type hollow passageway that connects before and after the centre is provided with, the same direction of circular open of the square aperture at passage two ends and head oblate spheroid shape shell, the length of this passage, wide, high and dentata pitman square column type interlude mates, so that dentata pitman square column type interlude is placed this, the vertical direction that is positioned at this passage centre position, the back side also is provided with the screw that communicates with this passage, this screw is provided with female thread, be used to screw in flat nut with its coupling, this flat nut hollow, the inner chamber cross section is polygon, be generally hexagon, so that it is screwed in the screw, with fixing dentata pitman with the interior hexagonal spiral shell cutter that is complementary with it.
The all available titanium alloy of atlas pitman of the present utility model, dentata pitman and universal fixed bar is made, and also available other histocompatibilitys metal good, that certain bending strength is arranged is made.
During operation, according to the Harms technology the universal screw of pedicle of vertebral arch is implanted the relevant position of the atlas and the dentata left and right sides earlier respectively, insert the atlas pitman to interlude after the circular open of the circular open of universal joint cylinder type hollow passage and oblate spheroid shape shell transferred to same direction, according to the arch of posterior atlas radian with atlas pitman interlude bow with the applying arch of posterior atlas; Equally, the dentata pitman is inserted the square column type hollow passageway of the body of universal fixed bar, and dentata pitman square column type interlude placed in the square column type hollow passageway, screw in flat nut with locking dentata pitman by screw, again according to the position of universal fixed bar and the universal screw that is fixed in the dentata pedicle of vertebral arch from the cylindrical part of the square column type hollow passageway mouth bending dentata pitman left and right sides, and be embedded in the U-shaped groove of the universal screw head of a nail of having implanted dentata left and right sides pedicle of vertebral arch respectively, fastening nut is fixed it, the universal screw of having implanted atlas left and right sides pedicle of vertebral arch is fixed at atlas pitman two ends by the same method after satisfied under the perspective atlantoaxial dislocation being resetted then, promptly reaches the fixed purpose that resets.
This utility model is simple in structure, easy to use, because this inner fixer only is connected and fixed atlas and dentata, sections is short, and the interlude of atlas pitman inserts behind the universal joint of universal fixed bar slidably, therefore the function that has kept dentata joint, extensive region, simultaneously because universal fixed bar has limited the Atlantoaxial activity of bending and stretching, thereby reach the purpose that resets, again because the universal bearing structure that the universal joint of universal fixed bar and atlas pitman are formed can keep rotation and the lateroflexion function between the dentata of extensive region, therefore this non-fusion inner fixer ideal that resets keeps its normal physiological function, better efficacy again to greatest extent; Also, body injury and patient suffering have been reduced owing to do not need to merge from the body bone grafting.
Description of drawings
Fig. 1 is this utility model overall structure sketch map.
Fig. 2 is the structural representation of universal screw of the present utility model.
Fig. 3 is the structural representation of the nut of of the present utility model and universal screw coupling.
Fig. 4 is the structural representation of atlas pitman of the present utility model.
Fig. 5 is the structural representation of dentata pitman of the present utility model.
Fig. 6 is the side structure sketch map of universal fixed bar of the present utility model.
Fig. 7 is the Facad structure sketch map of universal fixed bar of the present utility model.
Fig. 8 is the flat nut structural representation of of the present utility model and universal fixed bar screw coupling.
The specific embodiment
Now in conjunction with the accompanying drawings and embodiments, this utility model is described in detail.
This utility model is made up of 4 the universal screws 1 of pedicle of vertebral arch, atlas pitman 2, dentata pitman 3 and universal fixed bars 4.The universal screw of pedicle of vertebral arch is made up of nail body 11, the head of a nail 12 and nut 13, the head of a nail 12 hollows, head of a nail both sides are provided with U-shaped groove 14, head of a nail inwall is provided with female thread, the external screw thread coupling of this female thread and nut 13, nut 13 hollows, the inner chamber cross section is hexagon, so that with the interior hexagonal spiral shell cutter that is complementary with it it is screwed in the head of a nail 12; Atlas pitman 2 is the solid cylindrical round metal bars, divide three sections of left, center, right, interlude 21 is thicker, be convexly curved, about two section 22 slightly thin, isometric grade is thick, and the width coupling of the universal screw head of a nail of its external diameter and pedicle of vertebral arch both sides U-shaped groove 14 is individually fixed in atlas pitman two ends so that be embedded in this U-shaped groove with two universal screws of pedicle of vertebral arch; Dentata pitman 3 also is the solid metal pole, divide three sections of left, center, right, interlude 31 is thicker, it is square column type, about two section 32 cylindrical, isometric grade is thick, and the width coupling of its external diameter and universal screw head of a nail both sides U-shaped groove is individually fixed in dentata pitman two ends to be embedded in this U-shaped groove with other two universal screws of pedicle of vertebral arch; Universal fixed bar 4 is used to connect atlas pitman 2 and dentata pitman 3, it is made up of head 41 and body 42 two parts, head is the universal bearing structure of being made up of the universal joint 412 of hollow oblate spheroid shape shell 411 and Qi Nei, the two sides is provided with circular open before and after the oblate spheroid shape shell, it is spherical that universal joint is, can in oblate spheroid shape shell, rotate, the cylinder type hollow passage 413 that connects before and after the centre is provided with, the circular open of the circular open of passage and oblate spheroid shape shell can transfer to same direction, the diameter of universal joint cylinder type hollow passage 413 and atlas pitman interlude 21 cylinder external diameters coupling is so that insert the interlude of atlas pitman in it and slidably adjust the position; The body 42 of universal fixed bar is square column type or other shapes, the square column type hollow passageway 421 that connects before and after the centre is provided with, the same direction of circular open of the square aperture at passage two ends and head oblate spheroid shape shell, the length of this passage, wide, high and dentata pitman square column type interlude 31 mates, so that dentata pitman square column type interlude is placed this, the vertical direction that is positioned at this passage centre position, the back side also is provided with the screw 422 that communicates with this passage, this screw is provided with female thread, be used to screw in flat nut 423 with its coupling, flat nut 423 hollows, the inner chamber cross section is hexagon, so that it is screwed in the screw, with fixing dentata pitman with the interior hexagonal spiral shell cutter that is complementary with it.
1. 1 kinds of way of escape extensive regions of embodiment dentata non-integration inner fixer
Universal screw nail body 11 long 24mm of the present utility model, external diameter 3.5mm, the head of a nail 12 internal diameter 6.0mm, nut 13 and its coupling.Atlas pitman 2 long 55mm, interlude 21 diameter 4.0mm, long 15mm, about the section 22 diameter 3.0mm, long 20mm.Dentata pitman 3 interludes 31 long 10mm, the transverse section be the square, length of side 4.0mm, about the section 32 cylinder diameter 3.0mm, long 30mm.Universal fixed bar 4 heads 41 lateral circular diameter 12mm, the diameter 4.2mm of universal joint cylinder type hollow passage 413, the frontal width of body 42 is 10mm, lateral width is 8mm, the length of square column type hollow passageway 421 and dentata pitman 3 interludes 31 couplings, the diameter 6.0mm of the central screw at the universal fixed bar back side, interior hexagonal flat nut 423 and its coupling, long 2.0mm.
This utility model can be made different specifications and models as required.
Claims (1)
1. way of escape extensive region dentata non-integration inner fixer, it is characterized in that forming by 4 universal screws of pedicle of vertebral arch (1), atlas pitman (2), dentata pitman (3) and universal fixed bar (4), the universal screw of pedicle of vertebral arch is made up of nail body (11), the head of a nail (12) and nut (13), head of a nail hollow, head of a nail both sides are provided with U-shaped groove (14), and head of a nail inwall is provided with female thread, the external screw thread coupling of this female thread and nut (13), nut hollow, the inner chamber cross section is polygon; Atlas pitman (2) is the solid cylindrical round metal bars, divide three sections of left, center, right, interlude (21) is thicker, be convexly curved, about two sections (22) slightly thin, isometric grade is thick, the width coupling of the universal screw head of a nail of its external diameter and pedicle of vertebral arch both sides U-shaped grooves (14), and it is embedded in this U-shaped groove two universal screws of pedicle of vertebral arch is individually fixed in atlas pitman two ends; Dentata pitman (3) also is the solid metal pole, divide three sections of left, center, right, interlude (31) is thicker, it is square column type, about two sections (32) cylindrical, isometric grade is thick, the width coupling of its external diameter and universal screw head of a nail both sides U-shaped grooves (14), and it is embedded in this U-shaped groove other two universal screws of pedicle of vertebral arch is individually fixed in dentata pitman two ends; Universal fixed bar (4) is used to connect atlas pitman (2) and dentata pitman (3), it is made up of head (41) and body (42) two parts, head is the universal bearing structure of being made up of hollow oblate spheroid shape shell (411) and the universal joint (412) in it, the two sides is provided with circular open before and after the oblate spheroid shape shell, it is spherical that universal joint is, can in oblate spheroid shape shell, rotate, the cylinder type hollow passage (413) that connects before and after the centre is provided with, the circular open of the circular open of passage and oblate spheroid shape shell can transfer to same direction, the diameter of universal joint cylinder type hollow passage (413) and atlas pitman interlude (21) external diameter coupling, the interlude of atlas pitman are inserted in it and are slidably adjusted the position; The body of universal fixed bar (42) is square column type, the square column type hollow passageway (421) that connects before and after the centre is provided with, the same direction of circular open of the square aperture at passage two ends and head oblate spheroid shape shell, the length of this passage, wide, high and dentata pitman square column type interlude (31) mates, dentata pitman square column type interlude places this, the vertical direction that is positioned at this passage centre position, the back side also is provided with the screw (422) that communicates with this passage, this screw is provided with female thread, be used to screw in flat nut (423) with its coupling, flat nut (423) hollow, the inner chamber cross section is polygon, it is screwed in the screw, with fixing dentata pitman.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200748572U CN201542728U (en) | 2009-07-20 | 2009-07-20 | Posterior atlantoaxial non-fusion internal fixation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200748572U CN201542728U (en) | 2009-07-20 | 2009-07-20 | Posterior atlantoaxial non-fusion internal fixation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201542728U true CN201542728U (en) | 2010-08-11 |
Family
ID=42597886
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200748572U Expired - Fee Related CN201542728U (en) | 2009-07-20 | 2009-07-20 | Posterior atlantoaxial non-fusion internal fixation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201542728U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104000645A (en) * | 2014-06-10 | 2014-08-27 | 张衣北 | Dynamic fixing system of posterior spinal |
| CN105361941A (en) * | 2015-12-14 | 2016-03-02 | 中国人民解放军第二军医大学 | Atlas vertebral pedicle hollow universal screw |
-
2009
- 2009-07-20 CN CN2009200748572U patent/CN201542728U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104000645A (en) * | 2014-06-10 | 2014-08-27 | 张衣北 | Dynamic fixing system of posterior spinal |
| CN105361941A (en) * | 2015-12-14 | 2016-03-02 | 中国人民解放军第二军医大学 | Atlas vertebral pedicle hollow universal screw |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102133132B (en) | Dynamic screw implant for pedicle of vertebral arch | |
| US8025681B2 (en) | Dynamic motion spinal stabilization system | |
| EP2967582B1 (en) | Pedicle screw with reverse spiral cut | |
| US20210137570A1 (en) | Articulating rod inserter | |
| WO2006016371A3 (en) | Minimally invasive spinal fusion | |
| CN203841856U (en) | Cervical vertebra fusion device | |
| WO2017067461A1 (en) | Interspinous omnidirectional dynamic stabilization device | |
| CN201108492Y (en) | Synarthrosis machine within atlantoaxial | |
| CN201542728U (en) | Posterior atlantoaxial non-fusion internal fixation device | |
| CN101601603B (en) | Posterior atlantoaxial restricted internal fixation device | |
| EP3419537B1 (en) | Polyaxial bone fixation element | |
| CN108888327B (en) | Elastic spine-stretching growth rod system | |
| CN110680488A (en) | Transverse connecting device and spinal internal fixing system applying same | |
| CN209404914U (en) | Posterior occipitocervical joint prosthesis device | |
| CN211156174U (en) | Transverse connecting device and spinal internal fixing system applying same | |
| CN209808498U (en) | Front-road occipital neck artificial joint device | |
| CN206910388U (en) | For inserting the ejector apparatus of scoliosis nail rod correction bracket | |
| CN202223325U (en) | Non-fusion elastic connecting rod | |
| CN208274609U (en) | A kind of variable diameter spinous process fusion Interal fixation system | |
| WO2015155789A2 (en) | Artificial implant for atlas-axis (c1-2) lateral joints and method of use thereof | |
| CN201139627Y (en) | Atlantoaxial posterior nail stick internal fixation device | |
| CN202365902U (en) | Lock-mounted axial infusion internal fixator for lumbosacral vertebrae | |
| CN202654210U (en) | Dynamic reconstruction device for lumbar vertebra isthmus | |
| CN219021765U (en) | Melt board nail stick system | |
| CN102715943A (en) | Dynamic repairing device for lumbar vertebra isthmus |
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: 20100811 Termination date: 20140720 |
|
| EXPY | Termination of patent right or utility model |