CN204133587U - A kind of neck bone inner fixing device - Google Patents
A kind of neck bone inner fixing device Download PDFInfo
- Publication number
- CN204133587U CN204133587U CN201420566467.8U CN201420566467U CN204133587U CN 204133587 U CN204133587 U CN 204133587U CN 201420566467 U CN201420566467 U CN 201420566467U CN 204133587 U CN204133587 U CN 204133587U
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- CN
- China
- Prior art keywords
- screw hole
- screw
- spring plate
- locking spring
- substrate
- 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
- 210000000988 bone and bone Anatomy 0.000 title claims abstract description 21
- 239000000758 substrate Substances 0.000 claims abstract description 39
- 208000001132 Osteoporosis Diseases 0.000 abstract description 7
- 238000006073 displacement reaction Methods 0.000 abstract description 5
- 229910000831 Steel Inorganic materials 0.000 description 6
- 238000013461 design Methods 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 208000027418 Wounds and injury Diseases 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 230000006378 damage Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 208000014674 injury Diseases 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000012958 reprocessing Methods 0.000 description 3
- 210000002345 respiratory system Anatomy 0.000 description 3
- 208000037408 Device failure Diseases 0.000 description 2
- 206010058522 Oesophageal injury Diseases 0.000 description 2
- 210000004204 blood vessel Anatomy 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000002980 postoperative effect Effects 0.000 description 2
- 208000032170 Congenital Abnormalities Diseases 0.000 description 1
- 206010061619 Deformity Diseases 0.000 description 1
- 206010015769 Extradural haematoma Diseases 0.000 description 1
- 206010061218 Inflammation Diseases 0.000 description 1
- 206010028980 Neoplasm Diseases 0.000 description 1
- 208000028389 Nerve injury Diseases 0.000 description 1
- 206010070995 Vascular compression Diseases 0.000 description 1
- 206010052428 Wound Diseases 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 210000003238 esophagus Anatomy 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 239000007943 implant Substances 0.000 description 1
- 230000004054 inflammatory process Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008764 nerve damage Effects 0.000 description 1
- 208000015122 neurodegenerative disease Diseases 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 108010048734 sclerotin Proteins 0.000 description 1
- 208000020431 spinal cord injury Diseases 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
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- Surgical Instruments (AREA)
Abstract
The utility model discloses a kind of neck bone inner fixing device, described inner fixing device comprises substrate, described substrate comprises first end and the second end, described first end and described the second end are provided with screw hole group respectively, described screw hole group comprises the first screw hole, second screw hole, 3rd screw hole, with the 4th screw hole, described first screw hole, described second screw hole, described 3rd screw hole and described 4th screw hole are arranged as tetragon, described first screw hole, described second screw hole is positioned at the outer end of described substrate, described 3rd screw hole and described 4th screw hole lay respectively at the inner side of described first screw hole and described second screw hole.Neck bone inner fixing device of the present utility model can fixing to cervical vertebra vertebra of more effective realization, particularly to sufferers of osteoporosis face, can reduce significantly due to screw get loose, substrate displacement causes reprocesses risk.
Description
Technical field
This utility model relates to bone surgery set field, particularly relates to a kind of neck bone inner fixing device.
Background technology
In recent years, anterior cervical operation is applied at increasing clinical application, in treatment cervical vertebra degenerative disease, wound, tumor, inflammation and deformity etc., obtain significant curative effect.But anterior cervical operation difficulty is comparatively large, and be easy to complication occurs.At present, the complication that the anterior cervical operation through report is common comprises spinal cord injury, nerve injury, blood vessel injury, respiratory tract injury, esophageal injury, cerebrospinal leak, epidural hematoma formation and Internal implant failure etc.
Anterior cervical operation generally comprises, and then anterior cervical decompression, bone grafting carry out Plate internal fixiation.Internal fixing system for anterior cervical vertebrae can provide postoperative and at once stablize, and fixedly secures plant bone mass, promotes diseased region bone-graft fusion, and allows patient at minimum extenal fixation or without can early ambulant during extenal fixation.In operation process, because subjects bones's quality is different, therefore need to select suitable vertebra inner fixing device.After having performed the operation, implant is in fine motion state in human body, the situations such as steel plate displacement, screw loosening, fracture may occur under long-term fine motion state, and finally cause Internal implant failure.Particularly for sufferers of osteoporosis face, higher steel plate displacement, the risk of screw loosening can be there is.Serious steel plate displacement, screw loosening meeting vascular compression, respiratory tract or esophagus, even cause blood vessel injury, respiratory tract injury or esophageal injury.Because the Low BMD of sufferers of osteoporosis face and osseous tissue micro structure are destroyed, cause sclerotin fragility to increase and be easy to fracture, in the anterior cervical operation of therefore sufferers of osteoporosis face, the better difficulty in steel plate location.Clinically, accept the sufferers of osteoporosis face of anterior cervical operation, the repair rate of its internal fixation steel plate is very high.
Therefore, those skilled in the art is devoted to develop a kind of better stable, the firmly neck bone inner fixing device that are suitable for sufferers of osteoporosis face.
Utility model content
In order to solve the less stable of existing neck bone inner fixing device, steel plate is easily shifted, the technical problem that screw easily loosens, this utility model provides a kind of neck bone inner fixing device, described inner fixing device comprises substrate, described substrate comprises first end and the second end, described first end and described the second end are provided with screw hole group respectively, described screw hole group comprises the first screw hole, second screw hole, 3rd screw hole, with the 4th screw hole, described first screw hole, second screw hole, 3rd screw hole and the 4th screw hole are arranged as tetragon, described first screw hole, second screw hole is positioned at the outer end of described substrate, described 3rd screw hole and described 4th screw hole lay respectively at the inner side of described first screw hole and described second screw hole.
Preferably, described device also comprises screw, and described screw is set to match with described first screw hole, described second screw hole, described 3rd screw hole or described 4th screw hole.
Preferably, between described first screw hole and described second screw hole, and be provided with locking spring plate between described 3rd screw hole and described 4th screw hole, described locking spring plate has the first state and the second state, under external force, described locking spring plate can be changed between described first state and described second state, when screw matches with screw hole, the described locking spring plate being in described first state allows screw to exit from screw hole, and described screw is limited in described screw hole by the described locking spring plate being in described second state.
Preferably, described locking spring plate is rotatable to be fixed on described substrate, described locking spring plate has and corresponds respectively to described first screw hole and described second screw hole, or the locking wings of the 3rd screw hole and described 4th screw hole, when described locking wings avoids screw hole, described locking spring plate is in described first state; When described locking wings points to lock hole, described locking spring plate is in described second state.
Preferably, described locking spring plate bottom is provided with securing rod, and described securing rod is that hollow structure outside is provided with external screw thread, and the inner wall of end of described securing rod is provided with taper chamfering.
Preferably, described substrate arranges the female lock hole of tool in the middle of respective screws hole, and described locking spring plate can be fixed in described lock hole, and the external screw thread of described securing rod and the female thread of described lock hole match.
Preferably, the distance between described first screw and described second screw is d
12, the distance between described 3rd screw and described 4th screw is d
34, d
12< d
34.
More preferably, d
12: d
34for 1:1.2-1.5.
Preferably, in the middle part of described substrate, screw hole is not set.
Preferably, described substrate is also provided with window.
Preferably, described substrate is single segmental or multi-segmental substrate.
Preferably, described first end and described the second end are the curved surface to skeleton curving.
Technique effect
Neck bone inner fixing device of the present utility model can fixing to cervical vertebra vertebra of more effective realization, particularly to sufferers of osteoporosis face, can reduce significantly because screw gets loose, what substrate displacement caused reprocesses risk, and neck bone inner fixing device of the present utility model, be particularly suitable for reprocessing in operation and use, reprocessing in operation, owing to neck bone having existed bone screw boring, if therefore continue to insert bone screw in former boring, be easy to cause screw to get loose, substrate is shifted, and in reprocessing, use four hole substrates of the present utility model, bone screw can be placed in new position, and can effectively disperse screw power, enhance the hold of substrate to skeleton, therefore, it is possible to obtain better fixed effect, greatly improve and reprocess success rate.The curved design of end makes nail to intersection, greatly strengthen anti-rotation performance, reduce further and move back nail risk.
Be described further below with reference to the technique effect of accompanying drawing to design of the present utility model, concrete structure and generation, to understand the purpose of this utility model, characteristic sum effect fully.
Accompanying drawing explanation
Fig. 1 is the board structure schematic diagram of a preferred embodiment of the present utility model;
Fig. 2 is the board structure schematic diagram of another better embodiment of the present utility model;
Fig. 3 is the single-unit board structure schematic diagram of a preferred embodiment of the present utility model;
Fig. 4 is three joint board structure schematic diagrams of a preferred embodiment of the present utility model;
Fig. 5 is the perspective view of a preferred embodiment of the present utility model;
Fig. 6 is the locking spring plate structural representation of a preferred embodiment of the present utility model.
Fig. 7 is the A-A sectional view of locking spring plate in Fig. 6.
Fig. 8 is the B-B sectional view of locking spring plate in Fig. 7.
Fig. 9 is the perspective view of the locking spring plate of a preferred embodiment of the present utility model.
Detailed description of the invention
Embodiment 1
As shown in the figure, the neck bone inner fixing device of this example, comprise substrate 01, described substrate 01 comprises first end 11 and the second end 12, described first end 11 and described the second end 12 are respectively equipped with screw hole group, described screw hole group comprises the first screw hole 111, second screw hole 112, 3rd screw hole 113, with the 4th screw hole 114, described first screw hole 111, second screw hole 112, 3rd screw hole 113, tetragon is arranged as with the 4th screw hole 114, described first screw hole 111 and the second screw hole 112 are positioned at the outer end of described substrate 01, described 3rd screw hole 113 and described 4th screw hole 114 lay respectively at the inner side of described first screw hole 111 and the second screw hole 112, concrete visible Fig. 1.
As shown in Figure 5, described cervical vertebra vertebra inner fixing device also comprises screw 02, and described screw 02 is set to match with described first screw hole 111, described second screw hole 112, described 3rd screw hole 113 or the 4th screw hole 114.
At described first screw hole 111 and described second screw hole 112, and described 3rd screw hole 113 and the described 4th is provided with locking spring plate 115 in the middle of screw hole 114, described locking spring plate 115 has the first state and the second state, under external force, described locking spring plate 115 can be changed between described first state and described second state, when screw matches with screw hole, the described locking spring plate 115 being in described first state allows screw to exit from screw hole, described screw is limited in described screw hole by the described locking spring plate 115 being in described second state, screw is not allowed to exit from screw hole.
Described locking spring plate 115 is rotatable to be fixed on described substrate 01, and described locking spring plate 115 has the locking wings 1151 corresponding respectively to its both sides screw hole, and when described locking wings 1151 avoids screw hole, described locking spring plate 115 is in described first state; When described locking wings 1151 points to lock hole, a part for described locking wings 1151 stretches into above lock hole, is blocked by screw, and now described locking spring plate 115 is in described second state.
In the present embodiment, the distance between described first screw and described second screw is d
12, the distance between described 3rd screw and described 4th screw is d
34, d
12≤ d
34, in preferably embodiment, d
12: d
34for 1:1.2, d in the present embodiment
128.5mm, d
34=10.2mm.
Described substrate 01 is also provided with window 116.
In the present embodiment, as shown in Figure 1, in the middle part of described substrate 01, screw hole is not set, decrease manufacturing procedure, saved production cost, enhance rigidity and the intensity of substrate simultaneously, and can corresponding increase window 116, in more convenient art and postoperative observation.In other embodiments, also can screw hole be set in the middle part of described substrate 01, as shown in Figure 2.When arranging screw hole 117 in middle part, locking spring plate is set equally, respectively the screw hole of corresponding both sides, to realize the locking to both sides screw.
Substrate 01 in the present embodiment can be single-unit (as shown in Figure 3) or more piece (as shown in Figure 2,4), in Fig. 2 for binodal section, be three sections in Fig. 4, use design of the present utility model, make the fixing more firm of multi-segmental substrate, significantly can reduce repair rate.
In the present embodiment, the structure of locking spring plate 115 as shown in Figures 6 to 9, locking spring plate 115 has locking wings 1151, and described locking spring plate 115 bottom is provided with securing rod 1152, securing rod 1152 is provided with external screw thread for hollow structure outside, and securing rod 1152 inner wall of end is provided with taper chamfering 1153.This taper chamfering 1,153 one aspect makes securing rod 1152 end thinning, is easy to deformation, and chamfer design makes easier punch process on the other hand.Substrate 01 arranges the female lock hole of tool in the middle of respective screws hole, and locking spring plate 115 can be fixed in this lock hole, and the described external screw thread of securing rod 1152 and the female thread of lock hole match.In the course of processing, securing rod 1152 is screwed in the lock hole of substrate 01, when described locking spring plate 115 is in described first state to taper chamfering 1153 punching press, make the outermost end wall deformation of securing rod 1152, destroy the screw thread (being riveted on substrate 01 by locking spring plate 115) of securing rod 1152 outermost end, cause described locking spring plate 115 opposing substrate 01 can not back off to external rotation, only can unidirectional inside rotational lock, and described locking spring plate 115 just can be threaded to the second state when screwing, stopped by screw 02 in screw hole, anti-its moves back nail.
More than describe preferred embodiment of the present utility model in detail.Should be appreciated that those of ordinary skill in the art just can make many modifications and variations according to design of the present utility model without the need to creative work.Therefore, all technical staff in the art according to design of the present utility model on the basis of existing technology by the available technical scheme of logical analysis, reasoning, or a limited experiment, all should by the determined protection domain of claims.
Claims (10)
1. a neck bone inner fixing device, it is characterized in that, described inner fixing device comprises substrate, described substrate comprises first end and the second end, described first end and described the second end are provided with screw hole group respectively, described screw hole group comprises the first screw hole, second screw hole, 3rd screw hole, with the 4th screw hole, described first screw hole, described second screw hole, described 3rd screw hole and described 4th screw hole are arranged as tetragon, described first screw hole, described second screw hole is positioned at the outer end of described substrate, described 3rd screw hole and described 4th screw hole lay respectively at the inner side of described first screw hole and described second screw hole.
2. device as claimed in claim 1, it is characterized in that, described device also comprises screw, and described screw is set to match with described first screw hole, described second screw hole, described 3rd screw hole or described 4th screw hole.
3. device as claimed in claim 2, it is characterized in that, between described first screw hole and described second screw hole, and be provided with locking spring plate between described 3rd screw hole and described 4th screw hole, described locking spring plate has the first state and the second state, under external force, described locking spring plate can be changed between described first state and described second state, when screw matches with screw hole, the described locking spring plate being in described first state allows screw to exit from screw hole, described screw is limited in described screw hole by the described locking spring plate being in described second state.
4. device as claimed in claim 3, it is characterized in that, described locking spring plate is rotatable to be fixed on described substrate, described locking spring plate has and corresponds respectively to described first screw hole and described second screw hole, or the locking wings of the 3rd screw hole and described 4th screw hole, when described locking wings avoids screw hole, described locking spring plate is in described first state; When described locking wings points to lock hole, described locking spring plate is in described second state.
5. device as claimed in claim 1, it is characterized in that, the distance between described first screw and described second screw is d
12, the distance between described 3rd screw and described 4th screw is d
34, d
12≤ d
34.
6. device as claimed in claim 5, is characterized in that, d
12: d
34for 1:1.2-1.5.
7. device as claimed in claim 1, is characterized in that, do not arrange screw hole in the middle part of described substrate.
8. device as claimed in claim 1, is characterized in that, described substrate is also provided with window.
9. device as claimed in claim 1, it is characterized in that, described substrate is single segmental or multi-segmental substrate.
10. device as claimed in claim 4, it is characterized in that, described locking spring plate bottom is provided with securing rod, and described securing rod is that hollow structure outside is provided with external screw thread, and the inner wall of end of described securing rod is provided with taper chamfering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420566467.8U CN204133587U (en) | 2014-09-28 | 2014-09-28 | A kind of neck bone inner fixing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420566467.8U CN204133587U (en) | 2014-09-28 | 2014-09-28 | A kind of neck bone inner fixing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204133587U true CN204133587U (en) | 2015-02-04 |
Family
ID=52410313
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420566467.8U Expired - Fee Related CN204133587U (en) | 2014-09-28 | 2014-09-28 | A kind of neck bone inner fixing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204133587U (en) |
-
2014
- 2014-09-28 CN CN201420566467.8U patent/CN204133587U/en not_active Expired - Fee Related
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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: 20150204 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |