CN201519188U - Atlanto-odontoid joint connector - Google Patents
Atlanto-odontoid joint connector Download PDFInfo
- Publication number
- CN201519188U CN201519188U CN2009202002237U CN200920200223U CN201519188U CN 201519188 U CN201519188 U CN 201519188U CN 2009202002237 U CN2009202002237 U CN 2009202002237U CN 200920200223 U CN200920200223 U CN 200920200223U CN 201519188 U CN201519188 U CN 201519188U
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- dentata
- atlas
- shaped
- ring groove
- component
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Abstract
The utility model discloses an atlanto-odontoid joint connector, which comprises a dentata component and an atlas component which are in rotational engagement. A rotary head body is arranged at the middle end of the dentata component, and an included angle between two lines connecting initial points of an inner ring groove of the rotary head body to the circle center is at least 90 degrees. The atlas component comprises an atlas connecting plate, and an atlas connecting plate rotating hole inner cavity is inserted and movably engaged with the rotary head body. A limit screw is radially assembled on one side of the atlas connecting plate, and the center of the limit screw faces towards the central axis of the rotating hole. A boss at the head end of the limit screw is fastened and engaged with the inner ring groove and controls limitation between the dentata component and the atlas component. The inner ring groove on the front side of the rotary head body of the dentata component matches with the limit screw of the atlas component, and dislocation of the dentata component and the atlas component can be prevented. Besides, after the limit screw is locked, the dentata component and the atlas component can rotate 45 degrees left and right only. The upper end of the atlas component rotating hole is sealed, thereby preventing grow-in of surrounding soft tissue from affecting movement of artificial atlanto-odontoid joints.
Description
Technical field
This utility model relates to technical field of medical, particularly a kind of atlanto-odontoid joint adapter.
Background technology
Medically treating atlantoaxial dislocation and unstable decompression and the fusions of adopting at present more.Simple decompression can not be corrected completely to the extensive region dentata, even can increase the weight of the shakiness of articulatio atlantoepistrophica; And fusion is to stablize articulatio atlantoepistrophica by Atlantoaxial fusion, directly causes rotatablely moving of patient's postoperative head and neck articulatio atlantoepistrophica obviously limited, finally can make the cervical spinal instability and the regression of not merging.So decompression and fusion can not be eradicated Atlantoaxial dislocation and unstable problem, can't keep original function of articulatio atlantoepistrophica motion simultaneously, make the patient finally can't return to health status, promptly can't be treated completely.There is treatment means in the society at present, as November 22 2002 applying date, application number 02288644.3 has disclosed " pillow neck holder ", and it comprises an occipital fixation plates, on the head end arc plate section of this occipital fixation plates, be provided with several holes, in the hole, be provided with the occipital bone screw of tip; End in the straight plate section of tail end of occipital fixation plates is provided with a hole, wears pedicle screw in this hole, is provided with the hold-down nut that is complementary on this pedicle screw; This holder adopts fixed form, has pinned occipital bone and cervical vertebra, has limited the activity in occipital bone and cervical vertebra joint.
Summary of the invention
Technical problem to be solved in the utility model is the present situation at prior art, the atlanto-odontoid joint adapter that a kind of reliable, safe in utilization, good stability, long service life rational in infrastructure is provided and has positioning function.
This utility model solves the problems of the technologies described above the technical scheme that is adopted: the atlanto-odontoid joint adapter, comprise the dentata parts and the atlas parts that rotate and cooperate, head end is shaped on the swivel head body in the middle of the dentata parts, at least one side circular surfaces of this swivel head body is shaped on interior concave ring groove according to left and right directions, and the angle value that the starting point of concave ring groove is connected between two lines in the center of circle in this is at least nine ten degree; The atlas parts include the atlas connecting plate, be shaped in the middle of the atlas connecting plate axially and according to the rotation hole of below, and this rotation hole inner chamber are with the swivel head body plugs together and move and join; A side radially is fitted with stop screw in the middle of the atlas connecting plate, and the center of this stop screw is right against the centrage of rotation hole; The stop screw head end is shaped on the boss body, and this boss body cooperates with interior concave ring groove buckle, and the left-right rotation between control dentata parts and the atlas parts is spacing and anchor spacing up and down; The rotation hole upper end closed promptly intercepts contacting between swivel head body upper end and the surrounding soft tissue.
The measure of taking also comprises:
Above-mentioned interior concave ring groove is equipped on the front of swivel head body, and to be connected in the angle value between two lines in the center of circle be 90 degree to the starting point of concave ring groove in this, and be symmetrical arranged with the centrage of swivel head body.
Above-mentioned interior concave ring groove is the circular arc cell body, and the depth value of this circular arc cell body is 0.5 millimeter, and the arc radius value of this circular arc cell body is at least 0.75 millimeter; Correspondingly, above-mentioned stop screw boss end of body is a spheroplast, and the arc radius value of this spheroplast also is at least 0.75 millimeter, and the spherical arc radius value of boss body is identical with above-mentioned interior concave ring groove arc groove body arc radius value.
Above-mentioned interior concave ring groove arc groove body arc radius value is 0.75 millimeter, and correspondingly, the spherical arc radius value of above-mentioned boss body also is 0.75 millimeter; Above-mentioned swivel head body head end is shaped on spheroplast, and the radius value of this spheroplast is at least 4 millimeters; Distance values between above-mentioned spheroplast's centrage and the interior concave ring groove centrage is at least 1 millimeter.
Stage body and side plate in the middle of above-mentioned atlas connecting plate includes, rotation hole is positioned at this centre stage body, the positive both sides of stage body in the middle of above-mentioned side plate is assigned in, and all be inserted with a tapping screw on this side plate; Side plate is a conical plate, and promptly this side plate outwards enlarges according to atlas connecting plate centrage.
Be shaped on two mounting holes on the above-mentioned side plate, and this mounting hole and above-mentioned tapping screw pairing; Above-mentioned tapping screw central shaft is to being shaped on middle through hole, and this tapping screw radially is shaped on the transverse holes group that at least three circles be arranged in parallel, and each circle transverse holes group includes at least three transverse holes that wait radians to be provided with, and this transverse holes all with above-mentioned middle through hole break-through; Above-mentioned tapping screw front end is shaped on the arc head, and this tapping screw rear end is shaped on and screws end, and this screws and is shaped on hexagon ring in the end.
Above-mentioned dentata parts also include the dentata Connection Block that is positioned at swivel head body bottom, and the both sides of this dentata Connection Block are shaped on the dihedral connecting plate; Above-mentioned dihedral connecting plate end wedge angle, and form the triangle plate body with the dentata Connection Block, and all be inserted with a tapping screw on this triangle plate body.
Above-mentioned dentata Connection Block is a square body, is shaped on the open die cavity in bottom in the middle of this square body, all is shaped at least one row's cinclides group on this cavity lateral, roof and the diapire.
Be shaped on row's cinclides group on the above-mentioned dentata Connection Block cavity lateral, and this row cinclides group includes at least three cinclides; Be shaped at least three row's cinclides groups on dentata Connection Block die cavity roof and the diapire, and this row cinclides group also includes at least three cinclides, the diameter value of this cinclides is at least 0.8 millimeter.
Compared with prior art, this utility model comprises dentata parts and the atlas parts that rotate and cooperate, head end is shaped on the swivel head body in the middle of the dentata parts, at least one side circular surfaces of this swivel head body is shaped on interior concave ring groove according to left and right directions, and the angle value that the starting point of concave ring groove is connected between two lines in the center of circle in this is at least nine ten degree; The atlas parts include the atlas connecting plate, be shaped in the middle of the atlas connecting plate axially and according to the rotation hole of below, and this rotation hole inner chamber are with described swivel head body plugs together and move and join; A side radially is fitted with stop screw in the middle of the atlas connecting plate, and the center of this stop screw is right against the centrage of rotation hole; The stop screw head end is shaped on the boss body, and this boss body cooperates with interior concave ring groove buckle, and the left-right rotation between control dentata parts and the atlas parts is spacing and anchor spacing up and down; The rotation hole upper end closed promptly intercepts contacting between swivel head body upper end and the surrounding soft tissue.Advantage of the present utility model is: there is the stop screw coupling of an interior concave ring groove and atlas parts the swivel head body front side of dentata parts, can stop the atlas parts to cause the articulatio atlantoepistrophica shakiness that the organizational structure around the upper cervical spine is caused secondary damage because of excessively rotating, reliable in structure, good stability; The stop screw of concave ring groove and atlas parts coupling in the swivel head body front side of dentata parts, can also stop the dislocation of extensive region dentata parts, in addition, extensive region dentata parts can only left rotation and right rotation 45 ° after the stop screw locking, be that whole stroke is 90 °, positioning function is strong, prevents to thread off, and improves safe in utilization; The sealing of atlas parts rotation hole upper end has avoided influencing because of growing into of surrounding soft tissue the motion of artificial atlanto-odontoid joint, and it is rational in infrastructure, long service life.
Description of drawings
Fig. 1 is the front schematic view of this utility model embodiment;
Fig. 2 is the dextrad cross-sectional schematic of Fig. 1;
Fig. 3 is the schematic top plan view of Fig. 1;
Fig. 4 be among Fig. 1 the atlas connecting plate vertically and with the sketch map of broken section;
Fig. 4 a is looking up of Fig. 4 and with the sketch map of broken section;
Fig. 4 b is that sketch map is looked on the right side of Fig. 4;
Fig. 4 c be among Fig. 1 A to sketch map;
Fig. 5 is the positive main sketch map of looking of dentata parts among Fig. 1;
Fig. 5 a is the left-hand cross-sectional schematic of Fig. 5;
Fig. 5 b is overlooking of Fig. 5 and with the sketch map of broken section;
Fig. 5 c is that Fig. 5 is the dextrad cross-sectional schematic;
Fig. 5 d be among Fig. 5 A to sketch map;
Fig. 5 e be among Fig. 5 b B to sketch map;
Fig. 5 f is the cross section cross-sectional schematic of C-C among the figure c;
Fig. 6 is the traverse sketch map of stop screw among Fig. 1;
Fig. 6 a is that sketch map is looked on the left side of Fig. 6;
Fig. 7 is the positive cross-sectional schematic of tapping screw among Fig. 1;
Fig. 7 a is that sketch map is looked on the left side of Fig. 7;
Fig. 7 b is the schematic top plan view of Fig. 7;
Fig. 7 c is that sketch map is looked on the right side of Fig. 7.
The specific embodiment
Embodiment describes in further detail this utility model below in conjunction with accompanying drawing.
Shown in Fig. 1 to Fig. 7 c, figure grade is described as follows: dentata parts 1, swivel head body 11, interior concave ring groove 12, spheroplast 13, dentata Connection Block 14, die cavity 14a, cinclides 14b, dihedral connecting plate 15, atlas parts 2, atlas connecting plate 21, rotation hole 22, middle stage body 23, side plate 24, mounting hole 24a, stop screw 3, boss body 31, tapping screw 4, middle through hole 41, transverse holes 42, arc head 43 screws end 44, hexagon ring 45.
This utility model embodiment, the atlanto-odontoid joint adapter, comprise the dentata parts 1 and the atlas parts 2 that rotate and cooperate, head end is shaped on swivel head body 11 in the middle of the dentata parts 1, concave ring groove 12 in these swivel head body 11 at least one side circular surfaces are shaped on according to left and right directions, the angle value that the starting point of concave ring groove 12 is connected between two lines in the center of circle in this is at least nine ten degree; Atlas parts 2 include atlas connecting plate 21, be shaped in the middle of the atlas connecting plate 21 axially and according to the rotation hole 22 of below, and these rotation hole 22 inner chambers are with swivel head body 11 plugs together and move and join; A side radially is fitted with stop screw 3 in the middle of the atlas connecting plate 21, and the center of this stop screw 3 is right against the centrage of rotation hole 22; Stop screw 3 head ends are shaped on boss body 31, and this boss body 31 cooperates with interior concave ring groove 12 buckles, and the left-right rotation between control dentata parts 1 and the atlas parts 2 is spacing and anchor spacing up and down; Rotation hole 22 upper end closeds promptly intercept contacting between swivel head body 11 upper ends and the surrounding soft tissue.
Present embodiment is achieved in that the dentata parts 1 shown in Fig. 5, Fig. 5 a, Fig. 5 b and Fig. 5 c, Fig. 5 d, Fig. 5 e and Fig. 5 f, interior concave ring groove 12 is equipped on the front of swivel head body 11, should in the angle value that is connected between two lines in the center of circle of the starting point of concave ring groove 12 be 90 degree, and be symmetrical arranged with the centrage of swivel head body 11.
Interior concave ring groove 12 is the circular arc cell body, and the depth value of this circular arc cell body is 0.5 millimeter, and the arc radius value of this circular arc cell body is at least 0.75 millimeter; Correspondingly, stop screw 3 boss bodies 31 ends are spheroplast, and the arc radius value of this spheroplast also is at least 0.75 millimeter, and boss body 31 arc radius values with described in concave ring groove 12 circular arc cell body arc radius values identical.
Interior concave ring groove 12 circular arc cell body arc radius values are 0.75 millimeter, and correspondingly, boss body 31 arc radius values also are 0.75 millimeter; Swivel head body 11 head ends are shaped on spheroplast 13, and the radius value of this spheroplast 13 is at least 4 millimeters; Distance values between spheroplast's 13 centrages and interior concave ring groove 12 centrages is at least 1 millimeter.
1, tolerance grade not noted is pressed the IT12 level, does not annotate the equal rounding of seamed edge.
2, product surface roughness: inner surface≤1.6 μ m, outer surface≤0.8 μ m, hole, groove≤3.2 μ m.
3, product surface blasting treatment.
Atlas connecting plate shown in Fig. 4, Fig. 4 a, Fig. 4 b and Fig. 4 c, stage body 23 and side plate 24 in the middle of atlas connecting plate 21 includes, rotation hole 22 is positioned at this centre stage body 23, stage body 23 positive both sides in the middle of side plate 24 is assigned in, and all be inserted with a tapping screw 4 on this side plate 24; Side plate 24 is a conical plate, and promptly this side plate 24 outwards enlarges according to atlas connecting plate 21 centrages.
Be shaped on two mounting hole 24a on the side plate 24, and this mounting hole 24a and tapping screw 4 pairings; Tapping screw 4 central shafts through hole 41 in being shaped on, this tapping screw 4 radially are shaped at least three transverse holes groups that be arranged in parallel of circle, and each circle transverse holes group includes at least three transverse holes 42 that wait radians to be provided with, and this transverse holes 42 all with middle through hole 41 break-through; Tapping screw 4 front ends are shaped on arc head 43, and these tapping screw 4 rear ends are shaped on and screw end 44, and this screws end and is shaped on hexagon ring 45 in 44.These atlas parts 2 specification requirements are as described below:
1, tolerance grade not noted is pressed the IT12 level, does not annotate the equal rounding of seamed edge.
2, threaded bores deburring chamfering.
3, product surface roughness: inner surface≤1.6 μ m, outer surface≤0.8 μ m, hole, groove≤3.2 μ m.
4, product surface blasting treatment.
Advantage of the present utility model is: there is the stop screw coupling of an interior concave ring groove and atlas parts the swivel head body front side of dentata parts, can stop the atlas parts to cause the articulatio atlantoepistrophica shakiness that the organizational structure around the upper cervical spine is caused secondary damage because of excessively rotating, reliable in structure, good stability; The stop screw of concave ring groove and atlas parts coupling in the swivel head body front side of dentata parts, can also stop the dislocation of extensive region dentata parts, in addition, extensive region dentata parts can only left rotation and right rotation 45 ° after the stop screw locking, be that whole stroke is 90 °, positioning function is strong, prevents to thread off, and improves safe in utilization; The sealing of atlas parts rotation hole upper end has avoided influencing because of growing into of surrounding soft tissue the motion of artificial atlanto-odontoid joint, and it is rational in infrastructure, long service life.
Most preferred embodiment of the present utility model is illustrated, and various variations or the remodeling made by those of ordinary skills can not break away from scope of the present utility model.
Claims (9)
1. atlanto-odontoid joint adapter, comprise the dentata parts (1) and the atlas parts (2) that rotate and cooperate, it is characterized in that: head end is shaped on swivel head body (11) in the middle of the described dentata parts (1), at least one side circular surfaces of this swivel head body (11) is shaped on interior concave ring groove (12) according to left and right directions, and the angle value that the starting point of concave ring groove (12) is connected between two lines in the center of circle in this is at least nine ten degree; Described atlas parts (2) include atlas connecting plate (21), be shaped in the middle of the described atlas connecting plate (21) axially and according to the rotation hole (22) of below, and this rotation hole (22) inner chamber are with described swivel head body (11) plugs together and move and join; A side radially is fitted with stop screw (3) in the middle of the described atlas connecting plate (21), and the center of this stop screw (3) is right against the centrage of rotation hole (22); Described stop screw (3) head end is shaped on boss body (31), and this boss body (31) with described in concave ring groove (12) buckle cooperates, and it is spacing and anchor spacing up and down to control left-right rotation between dentata parts (1) and the atlas parts (2).
2. atlanto-odontoid joint adapter according to claim 1, it is characterized in that: concave ring groove (12) is equipped on the front of swivel head body (11) in described, should in the angle value that is connected between two lines in the center of circle of the starting point of concave ring groove (12) be 90 degree, and be symmetrical arranged with the centrage of swivel head body (11).
3. atlanto-odontoid joint adapter according to claim 2 is characterized in that: concave ring groove (12) is the circular arc cell body in described, and the depth value of this circular arc cell body is 0.5 millimeter, and the arc radius value of this circular arc cell body is at least 0.75 millimeter; Correspondingly, described stop screw (3) boss body (31) end is a spheroplast, and the arc radius value of this spheroplast also is at least 0.75 millimeter, and the spherical arc radius value of boss body (31) is identical with described interior concave ring groove (12) circular arc cell body arc radius value.
4. atlanto-odontoid joint adapter according to claim 3 is characterized in that: concave ring groove (12) circular arc cell body arc radius value is 0.75 millimeter in described, and correspondingly, the spherical arc radius value of described boss body (31) also is 0.75 millimeter; Described swivel head body (11) head end is shaped on spheroplast (13), and the radius value of this spheroplast (13) is at least 4 millimeters; Distance values between described spheroplast (13) centrage and interior concave ring groove (12) centrage is at least 1 millimeter.
5. atlanto-odontoid joint adapter according to claim 4, it is characterized in that: stage body (23) and side plate (24) in the middle of described atlas connecting plate (21) includes, described rotation hole (22) is positioned at this centre stage body (23), the positive both sides of stage body (23) in the middle of described side plate (24) is assigned in, and all be inserted with a tapping screw (4) on this side plate (24); Described side plate (24) is a conical plate, and promptly this side plate (24) outwards enlarges according to atlas connecting plate (21) centrage.
6. atlanto-odontoid joint adapter according to claim 5 is characterized in that: be shaped on two mounting holes (24a) on the described side plate (24), and this mounting hole (24a) and described tapping screw (4) pairing; Described tapping screw (4) central shaft is to being shaped on middle through hole (41), this tapping screw (4) radially is shaped on the transverse holes group that at least three circles be arranged in parallel, each encloses described transverse holes group and includes at least three transverse holes (42) that wait radians to be provided with, and this transverse holes (42) all with described middle through hole (41) break-through; Described tapping screw (4) front end is shaped on arc head (43), and this tapping screw (4) rear end is shaped on and screws end (44), and this screws and is shaped on hexagon ring (45) in the end (44).
7. atlanto-odontoid joint adapter according to claim 6 is characterized in that: described dentata parts (1) also include the dentata Connection Block (14) that is positioned at swivel head body (11) bottom, and the both sides of this dentata Connection Block (14) are shaped on dihedral connecting plate (15); Described dihedral connecting plate (15) end wedge angle, and form the triangle plate body with dentata Connection Block (14), and all be inserted with a tapping screw (4) on this triangle plate body.
8. atlanto-odontoid joint adapter according to claim 7, it is characterized in that: described dentata Connection Block (14) is a square body, be shaped on the open die cavity in bottom (14a) in the middle of this square body, all be shaped at least one row's cinclides group on this die cavity (14a) sidewall, roof and the diapire.
9. atlanto-odontoid joint adapter according to claim 8 is characterized in that: be shaped on row's cinclides group on described dentata Connection Block (14) die cavity (14a) sidewall, and this row cinclides group includes at least three cinclides (14b); Be shaped at least three row's cinclides groups on described dentata Connection Block (14) die cavity (14a) roof and the diapire, and this row cinclides group also includes at least three cinclides (14b), the diameter value of this cinclides (14b) is at least 0.8 millimeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202002237U CN201519188U (en) | 2009-11-05 | 2009-11-05 | Atlanto-odontoid joint connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202002237U CN201519188U (en) | 2009-11-05 | 2009-11-05 | Atlanto-odontoid joint connector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201519188U true CN201519188U (en) | 2010-07-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202002237U Expired - Fee Related CN201519188U (en) | 2009-11-05 | 2009-11-05 | Atlanto-odontoid joint connector |
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| CN (1) | CN201519188U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012145971A1 (en) * | 2011-04-26 | 2012-11-01 | 西安交通大学 | Artificial atlanto-odontoid joint |
| CN103860296A (en) * | 2014-03-07 | 2014-06-18 | 西安交通大学医学院第二附属医院 | Bionic low-friction artificial atlanto-odontoid joint |
| CN103860297A (en) * | 2014-03-07 | 2014-06-18 | 西安交通大学医学院第二附属医院 | Bionic artificial atlanto-odontoid joint |
| CN107224340A (en) * | 2016-03-24 | 2017-10-03 | 中国科学院宁波材料技术与工程研究所 | A kind of spacing Atlanto-odontoid joint connector and its installation method |
| CN109700517A (en) * | 2019-02-01 | 2019-05-03 | 西安增材制造国家研究院有限公司 | A kind of auxiliary reset instrument and preparation method thereof for atlantoaxial dislocation |
-
2009
- 2009-11-05 CN CN2009202002237U patent/CN201519188U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012145971A1 (en) * | 2011-04-26 | 2012-11-01 | 西安交通大学 | Artificial atlanto-odontoid joint |
| CN103860296A (en) * | 2014-03-07 | 2014-06-18 | 西安交通大学医学院第二附属医院 | Bionic low-friction artificial atlanto-odontoid joint |
| CN103860297A (en) * | 2014-03-07 | 2014-06-18 | 西安交通大学医学院第二附属医院 | Bionic artificial atlanto-odontoid joint |
| CN103860297B (en) * | 2014-03-07 | 2015-12-02 | 西安交通大学医学院第二附属医院 | Biomimetic prosthetic atlanto-odontoid joint |
| CN103860296B (en) * | 2014-03-07 | 2016-02-24 | 西安交通大学医学院第二附属医院 | Bionical low friction artificial atlanto-odontoid joint |
| CN107224340A (en) * | 2016-03-24 | 2017-10-03 | 中国科学院宁波材料技术与工程研究所 | A kind of spacing Atlanto-odontoid joint connector and its installation method |
| CN109700517A (en) * | 2019-02-01 | 2019-05-03 | 西安增材制造国家研究院有限公司 | A kind of auxiliary reset instrument and preparation method thereof for atlantoaxial dislocation |
| CN109700517B (en) * | 2019-02-01 | 2024-03-19 | 西安增材制造国家研究院有限公司 | Auxiliary resetting device for atlantoaxial dislocation and manufacturing method thereof |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100707 Termination date: 20101105 |