CN204951118U - Novel extensive region vertebra cantle hook and subassembly thereof - Google Patents
Novel extensive region vertebra cantle hook and subassembly thereof Download PDFInfo
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- CN204951118U CN204951118U CN201520441120.5U CN201520441120U CN204951118U CN 204951118 U CN204951118 U CN 204951118U CN 201520441120 U CN201520441120 U CN 201520441120U CN 204951118 U CN204951118 U CN 204951118U
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- hook
- coupler body
- cantle
- extensive region
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Abstract
The utility model discloses a novel extensive region vertebra cantle hook and subassembly thereof, the utility model discloses a vertebra cantle hook in novel extensive region is including the hook cap, through the connecting piece with the coupler body that the hook cap links to each other, be provided with on the connecting piece can with locking screw secure fit's through -hole, the coupler body with the junction of connecting piece be provided with with what the through -hole was corresponding portals. The utility model discloses an extensive region vertebra cantle hook and subassembly easy operation during concrete operations, only need expose extensive region vertebra cantle, have avoided neural blood vessel damage, especially are suitable for and implant extensive region vertebra lateral mass screw or pedicle of vertebral arch screw person, and the utility model discloses a this cantle hook accessible locking screw makes hook and extensive region vertebra form a whole on firmly being fixed in extensive region vertebra cantle, avoids the coupler body to become flexible, drop, and is fixed with occipital bone, dentata, can better anti rotation.
Description
Technical field
This utility model relates to medical instruments field, particularly relates to a kind of novel arch of posterior atlas hook.
Background technology
The illness such as odontoid fracture, rheumatic arthritis can cause atlanto-axial instability or dislocation, thus cause upper neck marrow pressurized and occur paralysis, it is stable that this situation just can must make articulatio atlantoepistrophica obtain effective biomechanics by operative treatment, otherwise spinal cord injury can increase the weight of by Progressive symmetric erythrokeratodermia.Therefore, usually need positive surgical operation therapy for this illness, to rebuild spinal stability.
Current row neck way of escape atlas operative treatment fixed form mainly contains: wire technique, interlaminar clamp technology, screw technique etc.But this several mode all has certain limitation: fixation with steel wire cannot provide enough biomechanics to stablize, and anti-cervical region activity is poor, postoperatively strong exterior fixation bracket is still needed to brake, fusion rate of bone graft is on the low side, often cause pseudoarticulation formation, in addition, steel wire has the danger of Spinal Cord through canalis spinalis; And interlaminar clamp technique for fixing only provides stability on the anterior flexion and rear stretching of spinal column, anti-rotation and to move horizontally effect poor, and the easy fatigability of interlaminar clamp loosens, de-folder, and the mode of its internal fixtion also will cause higher complication; And screw technique mainly comprises, and pedicle screw is fixing to be fixed with lateral mass screw, it is large that this technical requirement enters to follow closely angle, there are screw placement failure, damage vertebral artery, spinoneural danger, further, for sufferers of osteoporosis face, the risk that screw is transferred to is very high, and its operation time to patient require high, learning curve is long, in addition, the pedicle diameter of some patients is less, can not take this modus operandi.
Therefore, need a kind of safe, reliable and effective fixture at present badly to carry out way of escape atlas and fix.
Summary of the invention
Technical problem to be solved in the utility model is, provide a kind of novel arch of posterior atlas hook and assembly thereof, it is simple to operate, and neural blood vessel can be avoided to damage, and is suitable for and can not implants lateral mass of atlas screw or pedicle screw person.
In order to solve the problems of the technologies described above, this utility model provides a kind of novel arch of posterior atlas hook, it comprises hook cap, by the coupler body that connector is connected with described hook cap, described connector is provided with can with the through hole of lock screw secure fit, described coupler body and the junction of described connector are provided with corresponding the portalling with described through hole.
Further, described hook cap is the pipe that is connected with described connector of bottom, the tube wall of described pipe is symmetrically arranged with two U-lags, and tube wall between described two U-lags is also provided with lift groove.
Further, described coupler body is C font, and described coupler body top is connected with described connector, and described coupler body top is provided with portalling corresponding to described through hole, and be provided with the shallow trench holding lock screw tail end bottom described coupler body, described shallow trench with described portal corresponding.
Closer, the surface bottom described coupler body is also provided with anti-slip veins.
Correspondingly, this utility model additionally provides a kind of arch of posterior atlas hook assembly, it comprises above-mentioned novel arch of posterior atlas hook, the lock-screw that can be connected with the through hole whorl on the connector of described novel arch of posterior atlas hook, and the nut that can be threaded with the tube wall of the hook cap of described novel arch of posterior atlas hook.
Implement this utility model embodiment, there is following beneficial effect:
Novel arch of posterior atlas hook of the present utility model and assembly operation thereof simply, only need to expose arch of posterior atlas, avoid neural blood vessel to damage, and are especially suitable for and can not implant lateral mass of atlas screw or pedicle screw person; Further, by adding lock screw on cantle hook, making it be firmly secured on arch of posterior atlas, making hook and atlas form an entirety, avoiding coupler body to loosen, come off, fix with occipital bone, dentata, can good anti-rotation.
Accompanying drawing explanation
In order to be illustrated more clearly in this utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of an embodiment of a kind of novel arch of posterior atlas hook of the present utility model;
Fig. 2 is the structural representation of an embodiment of a kind of arch of posterior atlas hook assembly of the present utility model.
Detailed description of the invention
Below in conjunction with the accompanying drawing in this utility model embodiment, be clearly and completely described the technical scheme in this utility model embodiment, obviously, described embodiment is only this utility model part embodiment, instead of whole embodiments.Based on the embodiment in this utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of this utility model protection.
See Fig. 1, the structural representation of an embodiment of a kind of novel arch of posterior atlas hook of the present utility model.Particularly, in the present embodiment, this novel arch of posterior atlas hook comprises hook cap 11, the coupler body 12 be connected with this hook cap 11 by connector 13.Wherein, in the present embodiment the positive middle part of this connector 13 be provided with can with the through hole of lock screw secure fit, particularly, the inwall of this through hole is provided with female thread, thus it can coordinate with the external screw thread in lock screw; And in the present embodiment, this coupler body 12 is then provided with corresponding the portalling with this through hole with the junction of this connector 13, namely this portals and to constitute a passage that can pass through for lock screw with the through hole of connector 13, and by arranging female thread on through hole with the inwall portalled, cantle hook and being threaded between lock screw can be realized.When implementing the novel arch of posterior atlas hook of the present embodiment, only need the coupler body of this novel arch of posterior atlas hook be hung on arch of posterior atlas, relend and help lock screw to be fixed on arch of posterior atlas by this novel arch of posterior atlas hook, namely this cantle hook and atlas is made to form an entirety, thus avoid coupler body and loosen, come off, pitman, nut is placed in hook cap, can good anti-rotation.
Particularly, see Fig. 1, in the present embodiment, this hook cap 11 is specially the pipe that is connected with connector 13 of bottom, and the tube wall of this pipe is symmetrically arranged with two U-lags, and tube wall between these two U-lags is also provided with lifts groove 14.During enforcement, only need by suitable pitman through in the U-type groove of this hook cap 11, relend and help lifting pincers, snap in lift groove 14 by lifting pincers, then pitman can be pressed in this U-type groove by lift, thus time saving and energy saving.
See Fig. 1, in the present embodiment, this coupler body 12 is in C font, and its top is connected with connector 13, and this coupler body 12 top is provided with the portalling of through hole corresponding to above-mentioned connector, then be provided with the shallow trench 15 that can hold lock screw tail end bottom this coupler body 12, and this shallow trench is corresponding with portalling of top, namely this shallow trench is arranged on immediately below this portals.
Further, in order to increase frictional force, the surface in the present embodiment also bottom this coupler body 12 is also provided with anti-slip veins, specifically by arranging horizontal stripe or fin realizes.
Further, in the present embodiment, this connector is connected with this coupler body 12 in the mode that can rotate relative to this coupler body 12, thus when this coupler body 12 is hung on after on cantle, direction as required or angle can rotate this connector, after adjusting angle and/or direction, relend and help lock screw to be fixed on arch of posterior atlas by this novel arch of posterior atlas hook.
Corresponding to above-mentioned novel arch of posterior atlas hook, see Fig. 2, the present embodiment also provides a kind of arch of posterior atlas hook assembly, it comprises the novel arch of posterior atlas hook of above-described embodiment, and lock-screw 3 and nut 2, in one embodiment, this lock screw 3 comprises ailhead, nail bar, nail tail, wherein have the screw thread matched that to portal with coupler body 12 top outside ailhead, nail bar, nail tail also all have screw thread, and follow closely in shallow hook groove 15 that tail can stretch into bottom coupler body 12; This nut 2 is hollow, and lumenal cross-section is hexagon, the external screw thread that the female thread that outer wall is provided with hook cap 11 inwall matches; Namely when the coupler body of this novel arch of posterior atlas hook is hung over after on arch of posterior atlas, then this lock screw 3 is passed the through hole on the connector of this novel arch of posterior atlas hook, and be threaded with it, its tail end portalling then through coupler body 12 top, and stretch in the shallow trench 15 of bottom, thus arch of posterior atlas hook is fixed on arch of posterior atlas; On the other hand, by suitable pitman through in the U-type groove on the hook cap 11 of this novel arch of posterior atlas hook, and by the lift groove 14 on lifting pincers lift hook cap 11, be pressed in U-type groove by pitman, then be locked in hook cap 11 with the screwdriver of coupling by nut 2, namely this nut is connected with hook cap thread, thus make this novel arch of posterior atlas hook and arch of posterior atlas form an entirety, avoid coupler body to loosen, come off, fix with occipital bone, dentata, can good anti-rotation.
Above disclosedly be only this utility model preferred embodiment, certainly the interest field of this utility model can not be limited with this, one of ordinary skill in the art will appreciate that all or part of flow process realizing above-described embodiment, and according to the equivalent variations that this utility model claim is done, still belong to the scope that utility model contains.
Claims (5)
1. a novel arch of posterior atlas hook, it is characterized in that, comprise hook cap (11), by the coupler body (12) that connector (13) is connected with described hook cap (11), described connector (13) is provided with can with the through hole of lock screw secure fit, described coupler body (12) is provided with corresponding the portalling with described through hole with the junction of described connector (13).
2. novel arch of posterior atlas hook as claimed in claim 1, it is characterized in that, the pipe that described hook cap (11) is connected with described connector for bottom, the tube wall of described pipe is symmetrically arranged with two U-lags, and tube wall between described two U-lags is also provided with lift groove (14).
3. novel arch of posterior atlas hook as claimed in claim 1, it is characterized in that, described coupler body (12) is in C font, described coupler body (12) top is connected with described connector (13), and described coupler body (12) top is provided with portalling corresponding to described through hole, and described coupler body (12) bottom is provided with the shallow trench (15) holding lock screw tail end, described shallow trench (15) with described portal corresponding.
4. novel arch of posterior atlas hook as claimed in claim 3, is characterized in that, the surface of described coupler body (12) bottom is also provided with anti-slip veins.
5. an arch of posterior atlas hook assembly, it is characterized in that, comprise as the novel arch of posterior atlas hook in Claims 1-4 as described in any one, the lock-screw (3) that can be connected with the through hole whorl on the connector of described novel arch of posterior atlas hook, and nut (2), described nut (2) is threaded with the tube wall of the hook cap (11) of described novel arch of posterior atlas hook.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520441120.5U CN204951118U (en) | 2015-06-25 | 2015-06-25 | Novel extensive region vertebra cantle hook and subassembly thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520441120.5U CN204951118U (en) | 2015-06-25 | 2015-06-25 | Novel extensive region vertebra cantle hook and subassembly thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204951118U true CN204951118U (en) | 2016-01-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520441120.5U Expired - Fee Related CN204951118U (en) | 2015-06-25 | 2015-06-25 | Novel extensive region vertebra cantle hook and subassembly thereof |
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| CN (1) | CN204951118U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108498155A (en) * | 2018-04-26 | 2018-09-07 | 重庆医科大学附属永川医院 | A kind of anti-rotation pedicle screw of self-locking and its application method |
-
2015
- 2015-06-25 CN CN201520441120.5U patent/CN204951118U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108498155A (en) * | 2018-04-26 | 2018-09-07 | 重庆医科大学附属永川医院 | A kind of anti-rotation pedicle screw of self-locking and its application method |
| CN108498155B (en) * | 2018-04-26 | 2023-06-20 | 重庆医科大学附属永川医院 | Self-locking anti-rotation pedicle screw and use method thereof |
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| 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: 20160113 Termination date: 20160625 |
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| CF01 | Termination of patent right due to non-payment of annual fee |