CN2915047Y - Cervical anterior bone plate - Google Patents
Cervical anterior bone plate Download PDFInfo
- Publication number
- CN2915047Y CN2915047Y CN 200620075166 CN200620075166U CN2915047Y CN 2915047 Y CN2915047 Y CN 2915047Y CN 200620075166 CN200620075166 CN 200620075166 CN 200620075166 U CN200620075166 U CN 200620075166U CN 2915047 Y CN2915047 Y CN 2915047Y
- Authority
- CN
- China
- Prior art keywords
- ring
- butterfly
- plate
- butterfly plate
- hole
- 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 - Lifetime
Links
Images
Landscapes
- Surgical Instruments (AREA)
Abstract
The utility model discloses a bone plate of anterior cervical, comprising a butterfly-shaped plate, on which is arranged a plurality of via holes matching a plurality of nail heads of bone screws, and a shield ring which can withdraw along the axis of the bone screw in order to avoid loosening of the bone screws. Along a radial direction of the shielding ring is arranged an open slot and at the big diameter end of the via holes of the butterfly-shaped is arranged a round annular groove used to clamp the shield ring. the main characteristic is that an external diameter of the said shield ring should be less than the diameter of the arranged groove in the butterfly-shaped plate. The utility model is characterized in a simple structure and an easy operation and can effectively avoid any loosening and withdraw of the bone screw after an operation.
Description
Technical field
This utility model relates to a kind of anterior cervical vertebrae blade plate, belongs to medical device technology.
Background technology
The anterior cervical vertebrae blade plate is fixed on the anterior cervical vertebrae by bone screw, in order to diseases such as the regression of operative treatment cervical vertebra, wound and tumors.
At known anterior cervical vertebrae blade plate, adopt bone screw to be fixed in the operative treatment process on the anterior cervical vertebrae, accidental because bone screw loosening and axially withdraw from the malpractice that is caused along it.For this reason, provide a kind of postoperative bone screw that can effectively limit to become flexible the anterior cervical vertebrae blade plate deviate from, just become people's expectation.The disclosed cervical front-side sheet steel bone screw anti-releasing device of Chinese patent Granted publication 1148153C, although have bone screw anti-drop function preferably, it still exists complex structure, clinical operation operation inconvenience, the more high deficiency of preparation cost.
Summary of the invention
This utility model makes improvements at the deficiency of known technology, provides a kind of simple in structure, and clinical operation is easy to operate, can effectively avoid the loosening anterior cervical vertebrae blade plate that withdraws from of bone screw, to satisfy needs of society.
This utility model realizes that the technical scheme of its purpose is,
A kind of anterior cervical vertebrae blade plate comprises butterfly plate; Butterfly plate is provided with the through hole that can be complementary with the ailhead of bone screw, and its improvement is: comprise that also to be used for avoiding bone screw loosening and along its back-up ring that axially withdraws from; Back-up ring radially is provided with open slot; In the larger diameter end of the set through hole of butterfly plate, be provided with the circle shape groove that is used for clamping back-up ring; The external diameter of said back-up ring is less than the diameter of the set groove of butterfly plate.
Can understand by above given technical scheme, this utility model is because the existence of built-in back-up ring, when bone screw is screwed into bones, and back-up ring snapped in groove and withhold after the bone screw, can effectively avoid the loosening of bone screw to withdraw from, thereby realize the purpose of this utility model, and it is simple in structure, the clinical operation operation is simple and easy, especially because there is not other metallic article in the blade plate surface, helps the healing of wound.When needing to remove this utility model behind surgical healing, the available dedicated instrument gos deep in the groove of butterfly plate back-up ring, and does not withhold on the ailhead of bone screw, by twisting the uncoupling bone screw, this utility model can be disassembled from operative site.
The further improvement of the utility model point is,
Said butterfly plate is single butterfly plate, or two butterfly plate, or three butterfly plates; Single butterfly plate is provided with 5 through holes, and two butterfly plates are provided with 8 through holes, and three butterfly plates are provided with 11 through holes, and said through hole is by 2-1-2 order symmetric arrangement.3 kinds of butterfly plates that provided can satisfy the demand of different clinical operations.
The cylindrical of back-up ring is provided with several depressions, and depression is divided equally layout along the back-up ring circumferencial direction.Its purpose is to be convenient to the clamping of operating forceps, thereby further facilitates the clinical operation operation.
The through hole of said back-up ring is a cone-shaped hole.Because the existence of cone-shaped hole can further facilitate clinical operation.Adopt special hollow conehead instrument, back-up ring is entered in the groove of butterfly plate, so that withdraw from bone screw.
The side of major diameter one end of the cone-shaped hole of back-up ring is domatic, and the domatic of the lateral surface of butterfly plate groove and back-up ring is complementary.Because domatic existence can further facilitate the operation that clinical back-up ring snaps in groove.
After technique scheme was implemented, what this utility model had was simple in structure, and the clinical operation operation is simple and easy, and preparation cost is lower, effectively avoided the loosening characteristics that withdraw from of postoperative bone screw, was conspicuous.
Description of drawings
Fig. 1 is the front view of a kind of specific embodiment of this utility model;
Fig. 2 is the A-A cutaway view of Fig. 1;
Fig. 3 is the B-B cutaway view (rotation) of Fig. 1;
Fig. 4 is the front view of the another kind of specific embodiment of this utility model;
Fig. 5 is the C-C cutaway view of Fig. 4;
Fig. 6 is the D-D cutaway view (rotation) of Fig. 4;
Fig. 7 is the front view of the third specific embodiment of this utility model;
Fig. 8 is the E-E cutaway view of Fig. 7;
Fig. 9 is the F-F cutaway view (rotation) of Fig. 7;
Figure 10 is the included back-up ring front view of this utility model;
Figure 11 is the G-G cutaway view of Figure 10;
Figure 12 is this utility model and bone screw configuration status sketch map, and 3 is bone screw shown in the figure.
The specific embodiment
Below contrast accompanying drawing, by the description of the specific embodiment, the utility model is described in further detail.
One of specific embodiment is shown in accompanying drawing 1 to 3 and Figure 10,11.
A kind of anterior cervical vertebrae blade plate comprises medical stainless steel butterfly plate 1; Butterfly plate 1 is provided with the through hole 1-1 that can be complementary with the ailhead of bone screw, comprises that also to be used for avoiding bone screw loosening and along its medical stainless steel back-up ring 2 that axially withdraws from; Back-up ring 2 radially is provided with open slot 2-1; Thereby make back-up ring 2 constitute the circlip that to expand contraction; Larger diameter end at said through hole 1-1 is the arrival end of through hole 1-1, is provided with the circle shape groove 1-2 that is used for clamping back-up ring 2; The external diameter of said back-up ring 2 that is to say less than the diameter of butterfly plate 1 set groove 1-2, has gap delta (as shown in figure 12) between the circumference wall of the cylindrical of back-up ring 2 and groove 1-2.Said butterfly plate 1 is single butterfly plate; Single butterfly plate 1 is provided with 5 through hole 1-1, and said through hole 1-1 is by 2-1-2 order symmetric arrangement.The cylindrical of back-up ring 2 is provided with 4 depression 2-2, and depression 2-2 divides equally layout along back-up ring 2 circumferencial directions.The through hole 2-3 of said back-up ring 2 is cone-shaped holes.The side of major diameter one end of the cone-shaped hole 2-3 of back-up ring 2 is domatic 2-4, and the lateral surface 1-2-1 of butterfly plate groove 1-2 and the domatic 2-4 of back-up ring 2 are complementary.
Two of the specific embodiment is shown in accompanying drawing 4,5,6, l0,11.
A kind of anterior cervical vertebrae blade plate, said butterfly plate 1 are two butterfly plates, and two butterfly plates 1 are provided with 8 through hole 1-1, and said through hole 1-1 is by 2-1-2 order symmetric arrangement, and other is all as one of specific embodiment.
Three of the specific embodiment is shown in accompanying drawing 7,8,9,10,11.
A kind of anterior cervical vertebrae blade plate, said butterfly plate 1 is three butterfly plates; Three butterfly plates 1 are provided with 11 through hole 1-1, and said through hole 1-1 by 2-1-2 the order symmetric arrangement, other is all as one of specific embodiment.
The shape of the blade plate 1 of three specific embodiment described above, all the same with known technology, promptly along its in length and breadth to all with the neck bone profile be close circular-arc.
This utility model first sample trial effect is good.
Claims (5)
1, a kind of anterior cervical vertebrae blade plate comprises butterfly plate (1); Butterfly plate (1) is provided with the through hole (1-1) that can be complementary with the ailhead of bone screw, it is characterized in that: comprise that also to be used for avoiding bone screw loosening and along its back-up ring that axially withdraws from (2); Back-up ring (2) radially is provided with open slot (2-1); In the larger diameter end of the set through hole of butterfly plate (1) (1-1), be provided with the circle shape groove (1-2) that is used for clamping back-up ring (2); The external diameter of said back-up ring (2) is less than the diameter of the set groove of butterfly plate (1) (1-2).
2, anterior cervical vertebrae blade plate according to claim 1 is characterized in that: said butterfly plate (1) is single butterfly plate, or two butterfly plate, or three butterfly plates; Single butterfly plate (1) is provided with 5 through holes (1-1), and two butterfly plates (1) are provided with 8 through holes (1-1), and three butterfly plates (1) are provided with 11 through holes (1-1), and said through hole (1-1) is by 2-1-2 order symmetric arrangement.
3, anterior cervical vertebrae blade plate according to claim 1 is characterized in that: the cylindrical of back-up ring (2) is provided with several depressions (2-2), and depression (2-2) is divided equally layout along back-up ring (2) circumferencial direction.
4, according to claim 1 or 3 described anterior cervical vertebrae blade plates, it is characterized in that: the through hole (2-3) of said back-up ring (2) is a cone-shaped hole.
5, anterior cervical vertebrae blade plate according to claim 4, it is characterized in that: the side of major diameter one end of the cone-shaped hole (2-3) of back-up ring (2) is domatic (2-4), and the lateral surface (1-2-1) of butterfly plate groove (1-2) is complementary with domatic (2-4) of back-up ring (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620075166 CN2915047Y (en) | 2006-07-14 | 2006-07-14 | Cervical anterior bone plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620075166 CN2915047Y (en) | 2006-07-14 | 2006-07-14 | Cervical anterior bone plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2915047Y true CN2915047Y (en) | 2007-06-27 |
Family
ID=38185951
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620075166 Expired - Lifetime CN2915047Y (en) | 2006-07-14 | 2006-07-14 | Cervical anterior bone plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2915047Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105326543A (en) * | 2014-08-08 | 2016-02-17 | 冯骄阳 | Memory alloy bone screw type anterior cervical steel plate |
-
2006
- 2006-07-14 CN CN 200620075166 patent/CN2915047Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105326543A (en) * | 2014-08-08 | 2016-02-17 | 冯骄阳 | Memory alloy bone screw type anterior cervical steel plate |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201082188Y (en) | Expansion bone nail | |
| CN202497228U (en) | Spiral blade type femur near-end minimally invasive lockplate | |
| CN2915047Y (en) | Cervical anterior bone plate | |
| CN204072294U (en) | A kind of intramedullary pin for implanting humerus medullary cavity | |
| CN2936183Y (en) | Expansion type spongy bone hollow screw | |
| CN100369589C (en) | Means for preventing fixed bone screw loosening for cervical vertebrae front steel plate system | |
| CN207679425U (en) | Novel rectoscope | |
| CN204814131U (en) | Universal locking system of skeleton internal fixation | |
| CN202859279U (en) | Novel minimally invasive hollow breakable long-tail screw | |
| CN204699109U (en) | Neuroprotective suction aspirator tip | |
| CN203988319U (en) | A kind of pawl type rib plate with screw hole | |
| CN208974080U (en) | The inside and outside double fixing screws of fracture | |
| CN208838142U (en) | A kind of crushing fracture of head of radius reduction fixture device | |
| CN206950207U (en) | A kind of new medical surgical knife | |
| CN205924137U (en) | A prevent rotatory internal fixation device for femoral neck fracture | |
| CN217660091U (en) | Quick connecting sleeve for pedicle screw | |
| CN201088616Y (en) | Novel anterior cervical plate system | |
| CN105078560A (en) | Spiral bone plate | |
| CN211382066U (en) | Orthopedic forearm splint convenient for daily nursing | |
| CN108742824A (en) | A kind of bone surgery double end switching screwdriver | |
| CN202960737U (en) | Kirschner wire tail end locking device | |
| CN203693731U (en) | Acetabulum anterior wall anatomic plate | |
| CN217472062U (en) | Ball head hollow bone screw | |
| CN208435783U (en) | Orthopaedics angle screwdriver | |
| CN207666675U (en) | Multifunctional bolt |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20070627 |
|
| EXPY | Termination of patent right or utility model |