CN209847347U - Anterior cervical fixing system - Google Patents
Anterior cervical fixing system Download PDFInfo
- Publication number
- CN209847347U CN209847347U CN201920221572.0U CN201920221572U CN209847347U CN 209847347 U CN209847347 U CN 209847347U CN 201920221572 U CN201920221572 U CN 201920221572U CN 209847347 U CN209847347 U CN 209847347U
- Authority
- CN
- China
- Prior art keywords
- steel plate
- screw holes
- fixing
- screw
- bending
- 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
Abstract
The utility model provides an anterior cervical fixing system, which comprises a fixing steel plate and a plurality of fixing screws, the fixed steel plate is a rectangular steel plate, the two sides of the long side of the fixed steel plate are provided with mutually symmetrical transverse pre-bends, the two sides of the short side of the fixed steel plate are provided with longitudinal pre-bending, the curvature of the transverse pre-bending and the longitudinal pre-bending is matched with the physiological curvature of the cervical vertebra, two rows of screw holes are longitudinally arranged on the fixed steel plate, the fixing screws penetrate through the fixed steel plate through the screw holes, the fixing screw is provided with a locking cap, a backstop sheet is arranged between the screw holes in the same row, notches are arranged at two opposite sides of the backstop sheet, the anti-return sheet is provided with a rotary groove, the center of the anti-return sheet is provided with a positioning hole, a key is inserted into the positioning hole, the anti-return sheet is riveted on the fixed steel plate through the key, and an observation window is further arranged on the fixed steel plate between every two adjacent rows of the screw holes. The utility model provides high fixed knot constructs the security.
Description
Technical Field
The utility model belongs to the technical field of medical instrument, concretely relates to anterior cervical fixing system.
Background
Along with the development of cervical surgery, the application of anterior cervical steel plates in cervical degenerative diseases is gradually increased. At present, the anterior cervical steel plate has become an internal fixation system widely applied to reconstruction of cervical stability after cervical intervertebral disc and vertebral body resection, plays a role of a tension band when the steel plate is extended, plays a role of support when the steel plate is bent, and can ensure physiological activity of the spine and clinical effect of the spine as far as possible by means of decompression of the minimum segments and fusion of the minimum range of motion. The screws are used to lock the steel plate into tight engagement with the vertebral bodies of the spine and to enhance spinal stability. After operation, the cervical vertebra physiological curvature stabilizing device has the functions of immediately stabilizing, promoting fusion and maintaining the physiological curvature of the cervical vertebra, and obtains good clinical effect. With the continuous accumulation of clinical experience, the anterior cervical steel plate is also continuously developed.
At present, the anterior cervical locking steel plate conforms to the composite internal fixation treatment principle of low incisura, anti-withdrawal locking, narrow width, less oppression blood vessels and the like, and after the operation is finished, the micromotion of the locking screw, the withdrawal of the locking screw and the dropping of the clamping ring in the steel plate all bring serious influence on patients.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a cervical vertebra way of escape fixing system improves fixed knot and constructs the security.
The utility model provides a following technical scheme:
a cervical vertebra anterior fixing system comprises a fixing steel plate and a plurality of fixing screws, wherein the fixing steel plate is a rectangular steel plate, two sides of a long edge of the fixing steel plate are provided with mutually symmetrical transverse pre-bending, two sides of a short edge of the fixing steel plate are provided with longitudinal pre-bending, the curvature of the transverse pre-bending and the longitudinal pre-bending is identical to the physiological curvature of cervical vertebra, the fixing steel plate is longitudinally provided with two rows of screw holes, the screw holes are close to the edge of the fixing steel plate and are arranged in alignment with each other, the edge of the fixing steel plate close to the screw holes is provided with arc edges identical to the curvature of the screw holes, the fixing screws are arranged on the fixing steel plate in a penetrating way through the screw holes, the fixing screws are provided with locking caps, anti-backing pieces are arranged between the screw holes in the same row, notches are arranged on two opposite sides of the anti-backing pieces, two ends of the, the anti-back-off device is characterized in that a rotating groove is formed in the anti-back-off piece, a positioning hole is formed in the center of the anti-back-off piece, a key is inserted into the positioning hole, the anti-back-off piece is riveted on the fixed steel plate through the key, and an observation window is further arranged on the fixed steel plate between every two adjacent rows of screw holes.
Preferably, the inner ring of the screw hole is provided with a screw clamping groove, and the locking cap is clamped on the screw clamping groove.
Preferably, the screw holes in the same row are provided with retaining grooves, the retaining grooves are communicated with the adjacent screw holes, and the retaining sheets are arranged on the retaining grooves.
Preferably, the locking cap is provided with a rotary locking groove, a stud is arranged below the locking cap, the cross-sectional diameter of the stud is smaller than the diameter of the screw hole, and the diameter of the locking cap is matched with the diameter of the screw hole.
Preferably, the center of the rotating groove coincides with the center of the anti-return sheet, the screw holes in the same row are symmetrical about the center of the anti-return sheet, and the key penetrates through the positioning hole to be connected with the fixed steel plate.
Preferably, the number of the screw holes is two columns and three rows, and the screw holes are uniformly and symmetrically distributed on the fixed steel plate.
The utility model has the advantages that: the fixed steel plate is pre-bent longitudinally and transversely and is matched with the physiological bending curvature of the cervical vertebra, so that the plate bending operation again in the operation can be effectively reduced; the anti-back sheet is designed to prevent the screw from loosening and backing out, so that the safety of the internal fixing structure is ensured; the anti-backing sheet is provided with a rotating groove and a positioning hole, can be locked in one step through a key, is convenient to use, can ensure that a screw is backed out, and improves the safety of the structure; be equipped with the transplanting bone observation window on the steel sheet, make things convenient for the doctor to observe the use, improved fixed knot's safety in utilization.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the fixing screw structure of the present invention;
labeled as: 1. fixing a steel plate; 11. transversely pre-bending; 12. longitudinal pre-bending; 13. a screw clamp groove; 14. a recess; 15. a withdrawal stopping sheet; 151. positioning holes; 152. a rotating tank; 16. an observation window; 2. a set screw; 21. rotating the locking groove; 22. a locking cap; 23. a stud.
Detailed Description
As shown in fig. 1 and 2, a cervical vertebra anterior fixing system comprises a fixing steel plate 1 and a plurality of fixing screws 2, wherein the fixing steel plate 1 is a rectangular steel plate, the two sides of the long side of the fixing steel plate 1 are provided with mutually symmetrical transverse pre-bending 11, the two sides of the short side of the fixing steel plate 1 are provided with longitudinal pre-bending 12, the curvature of the transverse pre-bending 11 and the longitudinal pre-bending 12 is identical to the physiological bending curvature of cervical vertebra, the fixing steel plate 1 is longitudinally provided with two rows of screw holes, the number of the screw holes is two rows of three rows, and the screw holes are uniformly and symmetrically distributed on the fixing steel plate 1, and the. The screw is close to fixed steel sheet 1 edge and aligns the setting each other, and fixed steel sheet 1 edge that is close to the screw is equipped with the arc limit the same with the screw curvature, and set screw 2 wears to establish on fixed steel sheet 1 through the screw, is equipped with locking cap 22 on set screw 2, is equipped with rotatory locking groove 21 on the locking cap 22, makes things convenient for 2 rotatory installations of set screw, and locking cap 22 has double-screw bolt 23, and the transversal diameter of double-screw bolt 23 is less than the screw diameter, and locking cap 22 diameter and screw diameter phase-match. The screw hole inner ring is provided with a screw clamping groove 13, and the locking cap 22 is clamped on the screw clamping groove 13 to prevent the fixing screw 2 from penetrating out. The anti-back-off piece 15 is arranged between the screw holes in the same row, the anti-back-off groove is communicated with the adjacent screw holes, the anti-back-off piece 15 is arranged on the anti-back-off groove, and the anti-back-off piece 15 can rotate around the center in the anti-back-off groove. Notches 14 are formed in two opposite sides of the anti-return piece 15, two ends of the anti-return piece 15 can rotate to the positions above the screw holes and are tangent to the locking cap 22, a rotating groove 152 is formed in the anti-return piece 15, a positioning hole 151 is formed in the center of the anti-return piece 15, a key is inserted into the positioning hole 151, the anti-return piece 15 is riveted on the fixed steel plate 1 through the key, the center of the rotating groove 152 is coincident with the center of the anti-return piece 15, the screw holes in the same row are symmetrical about the center of the anti-return piece 15, the key penetrates through the positioning hole 151 to be connected with the fixed steel plate. Furthermore, an observation window 16 is further arranged on the fixed steel plate 1 between two adjacent rows of screw holes, so that a doctor can conveniently observe and use the fixed steel plate, and the use safety of the fixed structure is improved.
As shown in figures 1 and 2, when the anterior cervical vertebra fixing system is used, the fixing steel plate 1 is pre-bent longitudinally and transversely and is matched with the physiological bending curvature of cervical vertebra, so that the plate re-bending operation in the operation can be effectively reduced; fixing screw 2 passes its locking cap 22 behind the screw and fixes in the screw, fixed back, will only move back 15 both ends rotation to locking cap 22 top and tangent locking, wear to establish locating hole 151 through the key and make its riveting on fixed steel sheet 1 and fixed only move back the rotational position of piece 15, guarantee to prevent that fixing screw 2 is not hard up, withdraw from, the security of internal fixation structure has been ensured, furthermore, only move back 15 both sides and be equipped with notch 14, can guarantee when convenient only moving back 15 rotation operation that only move back piece 15 both ends leave screw position after rotatory 90 degrees that fixing screw 2 can withdraw from the screw, and be equipped with transplanting bone observation window 16 on the fixed steel sheet 1, make things convenient for the doctor to observe the use and operation, the safety in utilization of fixed knot structure has been improved.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. A cervical vertebra anterior fixing system is characterized by comprising a fixing steel plate and a plurality of fixing screws, wherein the fixing steel plate is a rectangular steel plate, two sides of a long edge of the fixing steel plate are provided with mutually symmetrical transverse pre-bending, two sides of a short edge of the fixing steel plate are provided with longitudinal pre-bending, the curvature of the transverse pre-bending and the longitudinal pre-bending is identical to the physiological curvature of cervical vertebra, the fixing steel plate is longitudinally provided with two rows of screw holes, the screw holes are close to the edge of the fixing steel plate and are arranged in an aligned mode, the edge of the fixing steel plate close to the screw holes is provided with an arc edge the same as the curvature of the screw holes, the fixing screws penetrate through the screw holes on the fixing steel plate, the fixing screws are provided with locking caps, anti-backing sheets are arranged between the screw holes in the same row, two opposite edges of the anti-backing sheets are provided with notches, two ends of the anti-backing sheets can, the anti-back-off device is characterized in that a rotating groove is formed in the anti-back-off piece, a positioning hole is formed in the center of the anti-back-off piece, a key is inserted into the positioning hole, the anti-back-off piece is riveted on the fixed steel plate through the key, and an observation window is further arranged on the fixed steel plate between every two adjacent rows of screw holes.
2. The anterior cervical fixation system of claim 1, wherein the screw hole has a screw retaining groove on an inner ring thereof, and the locking cap is engaged with the screw retaining groove.
3. The anterior cervical fixation system of claim 1, wherein anti-backup grooves are formed between the screw holes in the same row, the anti-backup grooves communicate with adjacent screw holes, and the anti-backup plate is disposed on the anti-backup grooves.
4. The anterior cervical fixation system of claim 1, wherein the locking cap is provided with a rotational locking groove, and a threaded stud is provided under the locking cap, the cross-sectional diameter of the threaded stud being smaller than the diameter of the threaded hole, and the diameter of the locking cap matching the diameter of the threaded hole.
5. The anterior cervical fixation system of claim 1, wherein the center of the rotation slot coincides with the center of the anti-back plate, the screw holes in the same row are symmetrical about the center of the anti-back plate, and the key passes through the positioning hole to connect to the fixing steel plate.
6. The anterior cervical fixation system of claim 1, wherein the screw holes are two columns and three rows and are evenly and symmetrically distributed on the fixation plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920221572.0U CN209847347U (en) | 2019-02-22 | 2019-02-22 | Anterior cervical fixing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920221572.0U CN209847347U (en) | 2019-02-22 | 2019-02-22 | Anterior cervical fixing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209847347U true CN209847347U (en) | 2019-12-27 |
Family
ID=68931900
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920221572.0U Expired - Fee Related CN209847347U (en) | 2019-02-22 | 2019-02-22 | Anterior cervical fixing system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209847347U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109674522A (en) * | 2019-02-22 | 2019-04-26 | 苏州吉美瑞医疗器械股份有限公司 | A kind of anterior cervical vertebrae fixed system |
-
2019
- 2019-02-22 CN CN201920221572.0U patent/CN209847347U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109674522A (en) * | 2019-02-22 | 2019-04-26 | 苏州吉美瑞医疗器械股份有限公司 | A kind of anterior cervical vertebrae fixed system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9681898B2 (en) | Spinous process fusion devices and methods thereof | |
| US7931678B2 (en) | Hybrid spinal plates | |
| US10206721B2 (en) | Cervical spine stabilization system with extendable plates | |
| US7909855B2 (en) | Orthopedic implant assembly | |
| WO2009061604A1 (en) | In-line occipital plate and method of use | |
| CN209847347U (en) | Anterior cervical fixing system | |
| CN108498152A (en) | spinal implant system and method | |
| US20210015523A1 (en) | Rib Fixation Device and Related Methods | |
| US10729474B2 (en) | Bone plates, systems, and methods of use | |
| CN210185777U (en) | Zero incisura anterior cervical compression fuses fixing device | |
| CN201055419Y (en) | Spinal column waist 5 sacrum 1 front steel plate screw internal fixation device | |
| CN204581478U (en) | A kind of anatomical form chest rib encircling type bone-knitting device | |
| CN109730815B (en) | Combined adjustable interbody fusion cage | |
| CN208598585U (en) | A kind of shin bone reconstruction Titanium Mesh | |
| RU170604U1 (en) | MEDICAL INSTRUMENT FOR TEMPORARY STABILIZATION OF THE SPINE WHEN CORRECTING ITS DEFORMATION | |
| CN206007349U (en) | A kind of anterior locking cervical plate system | |
| CN215503344U (en) | Practical dentata (C2) pedicle screw guiding device | |
| CN214484592U (en) | Internal fixing system for thoracolumbar vertebral plate and pedicle isthmus | |
| CN109674522A (en) | A kind of anterior cervical vertebrae fixed system | |
| CN212037611U (en) | Spinal surgery operation tractive apparatus | |
| CN210931766U (en) | A universal resetting means of cylinder for bone department spine operation | |
| CN212394984U (en) | Nerve retractor | |
| CN214342548U (en) | Novel spinal cortical bone fixing screw | |
| CN215306607U (en) | Sacrum rear T-shaped fixing device | |
| EP3525699B1 (en) | Spinal implant |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191227 |