CN203458453U - Anterior cervical plate system with clasp automatic fixing structure - Google Patents
Anterior cervical plate system with clasp automatic fixing structure Download PDFInfo
- Publication number
- CN203458453U CN203458453U CN201320414156.5U CN201320414156U CN203458453U CN 203458453 U CN203458453 U CN 203458453U CN 201320414156 U CN201320414156 U CN 201320414156U CN 203458453 U CN203458453 U CN 203458453U
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- CN
- China
- Prior art keywords
- snap ring
- steel plate
- annular groove
- anterior cervical
- clasps
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- 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 - Lifetime
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Abstract
The utility model belongs to medical apparatuses, and concretely provides an anterior cervical plate system with a clasp automatic fixing structure. The anterior cervical plate system comprises a steel plate and clasps, and is characterized in that, a particular clasp groove structure is disposed in the steel plate, the clasps are disposed in the clasp groove, after the clasps are installed into the steel plate, the clasps are automatically supported in the clasp groove of the steel plate without auxiliary external force. By the clasps, cooperated screws can be fixed. The steel plate is provided with gaps for fixing boss structures of the clasps. The anterior cervical plate system can effectively prevent withdrawal of the screws in the anterior cervical plate system, and no other structure is needed for fixation of the screws. The anterior cervical plate system is characterized by reasonable structure, simple operation, and safety.
Description
Technical field
This utility model belongs to medical mechanical domain, specifically a kind of anterior plate fixation with snap ring automatic fixing structure.
Background technology
Cervical vertebra, between skull and thoracic vertebra, and forms pillow neck joint with skull, upper cervical spine and lower cervical vertebra, consists of.Upper cervical spine is divided into C1 atlas, C2 dentata, and lower cervical vertebra is divided into C3-C7 joint.The common disease of cervical vertebra has tumor, spinal canal stenosis, intervertebral disc degradation disease, cervical spondylolisthesis, joint fusion failure, pseudoarticulation formation, deformity etc.Anterior plate fixation can be treated these diseases preferably, in clinical practice, also day by day increase, but there is the physiological movement of fatiguability, periodicity and past renaturation in joint, cervical vertebra place, what this also just gave steel plate screw fixedly brings certain impact, and the situation of becoming flexible, deviating from even fracture also occurs often.The unstability that steel plate and screw are fixing, can reduce the Initial stability of postoperative cervical vertebra, the incidence rate of increase pseudarthrosis, and increase the occurrence probability of cervical kyphosis, severe patient there will be malunion, local deformity, pain obviously, degeneration of intervertebral disc protrusion etc., larger on patient's post-operative recovery impact.
Summary of the invention
The purpose of this utility model is for the deficiencies in the prior art, provide a kind of can be fast and effectively fixedly anterior plate fixation and screw, and limit a kind of anterior plate fixation with snap ring automatic fixing structure that becomes flexible, deviates from of screw.
The technical scheme that this utility model adopts is:
A kind of anterior plate fixation with snap ring automatic fixing structure, comprise steel plate, snap ring, it is characterized in that: in steel plate, be provided with annular groove structure, snap ring is housed in annular groove, snap ring packs into after steel plate, meeting automatic stand, on the annular groove of steel plate, is installed without external force is auxiliary, by snap ring, can fix the screw coordinating with it.
Annular groove described in the utility model comprises two-part structure, and a part is circular ring slot structure, and for placing snap ring, another part is nick shaped structure, for the fixing boss structure of snap ring, thereby guarantees that snap ring cannot swing.Snap ring one end is boss structure, the other end is circulus, intermediate openings, both sides structure is c-shaped, boss structure and circulus in same level, snap ring in packing anterior plate fixation into after, can automatic stand on the annular groove of anterior plate fixation, after screw packs into, automatic hold-down screw.
During this utility model assembling, need first the boss structure on snap ring to be inserted in the annular groove breach of steel plate, then snap ring is pressed in the annular groove of anterior plate fixation.After steel plate and snap ring install, then by the screw coordinating with it through steel plate and fix with snap ring, steel plate is firmly arranged on pathological changes cervical vertebra joint, in the situation that there is no external force assistive device, screw can not ease out from cervical steel plate.
This utility model, due to the automatic fixing construction features of snap ring, makes steel plate hold-down screw more efficiently, and does not need unnecessary operation and assistive device to remove screw; Snap ring and steel plate good fit, utilizes the boss structure of snap ring itself, can securely screw is fixed in steel plate and be difficult for rollback.The utlity model has the features such as rational in infrastructure, simple and safe, the screw fixation of performing the operation.
Accompanying drawing explanation
Fig. 1 is the structural representation of this utility model embodiment.
Fig. 2 is the B-B cutaway view of Fig. 1.
Fig. 3 is the structural representation of snap ring in Fig. 1.
Fig. 4 is the A portion enlarged drawing of Fig. 3.
Fig. 5 is using state schematic diagram of the present utility model.
The specific embodiment
Embodiment as shown in Figure 1, 2, a kind of anterior plate fixation with snap ring automatic fixing structure, comprise steel plate 1, snap ring 2, it is characterized in that: in steel plate 1, be provided with special annular groove 3 structures, snap ring 2 is housed in annular groove 3, snap ring 2 packs into after steel plate 1, and meeting automatic stand, on the annular groove 3 of steel plate 1, can fix by snap ring 2 screw coordinating with it.
As shown in Figure 3,4, snap ring 2 one end in this utility model embodiment are boss structure 5, the other end is circulus, intermediate openings, both sides structure is c-shaped, and boss structure 5 and circulus are in same level, as shown in Figure 2, steel plate 1 in this utility model is designed with breach, for the fixing boss structure 5 of snap ring 2.In assembling process, first the boss structure of snap ring 25 is packed in the breach of steel plate, again the other end of snap ring is packed in the annular groove 3 of anterior plate fixation, meeting automatic stand is on annular groove 3, be not easy to come off, can effectively prevent that screw from getting loose from anterior plate fixation and the accurate fixed position of energy, guarantee the movable smooth and easy not clamping stagnation of snap ring simultaneously.
The thickness of this utility model snap ring 2 is corresponding with steel plate clamp annular groove 3 width sizes.
Be illustrated in figure 5 using state figure of the present utility model, wherein comprise anterior plate fixation 1, snap ring 2, annular groove 3, screw 4, first snap ring 2 is packed in the annular groove 3 on anterior plate fixation 1, after anterior plate fixation 1 and snap ring 2 assemble, the through hole that screw 4 is passed on anterior plate fixation 1 and snap ring 2, again that anterior plate fixation 1 is solid on cervical vertebra joint, on the annular groove 3 of snap ring 2 two side arms supports and anterior plate fixation 1, can effectively prevent the rollback of screw 4.
Claims (4)
1. with an anterior plate fixation for snap ring automatic fixing structure, comprise steel plate, snap ring, it is characterized in that: in steel plate, be provided with annular groove structure, snap ring is housed in annular groove, by snap ring, fix the screw coordinating with it.
2. the anterior plate fixation with snap ring automatic fixing structure according to claim 1, it is characterized in that: snap ring comprises boss structure and circulus two parts, snap ring one end is boss structure, the other end is circulus, intermediate openings, both sides structure is c-shaped, and boss structure and circulus are in same level, the annular groove of snap ring and anterior plate fixation matches, and can strut on the annular groove of anterior plate fixation.
3. the anterior plate fixation with snap ring automatic fixing structure according to claim 2, is characterized in that: steel plate design is jagged, for the fixing boss structure of snap ring.
4. the anterior plate fixation with snap ring automatic fixing structure according to claim 1, is characterized in that: the thickness of snap ring is corresponding with steel plate clamp annular groove width size.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320414156.5U CN203458453U (en) | 2013-07-10 | 2013-07-10 | Anterior cervical plate system with clasp automatic fixing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320414156.5U CN203458453U (en) | 2013-07-10 | 2013-07-10 | Anterior cervical plate system with clasp automatic fixing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203458453U true CN203458453U (en) | 2014-03-05 |
Family
ID=50170835
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320414156.5U Expired - Lifetime CN203458453U (en) | 2013-07-10 | 2013-07-10 | Anterior cervical plate system with clasp automatic fixing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203458453U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110856674A (en) * | 2018-08-23 | 2020-03-03 | 台湾微创医疗器材股份有限公司 | Spinal implant and method of making same |
-
2013
- 2013-07-10 CN CN201320414156.5U patent/CN203458453U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110856674A (en) * | 2018-08-23 | 2020-03-03 | 台湾微创医疗器材股份有限公司 | Spinal implant and method of making same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: ZHEJIANG CANWELL MEDICAL CO., LTD. Free format text: FORMER NAME: KEHUI MEDICAL EQUIPMENT CO., LTD., ZHEJIANG |
|
| CP03 | Change of name, title or address |
Address after: 321016 Zhejiang Province, Jinhua city Wucheng District Xianghua Street No. 466 Patentee after: CANWELL MEDICAL Co.,Ltd. Address before: 321016 Zhejiang city in Jinhua Province, Xinhua Street No. 466 Patentee before: ZHEJIANG CANWELL MEDICAL Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140305 |