CN2676849Y - Bone screw structure - Google Patents
Bone screw structure Download PDFInfo
- Publication number
- CN2676849Y CN2676849Y CN 03208406 CN03208406U CN2676849Y CN 2676849 Y CN2676849 Y CN 2676849Y CN 03208406 CN03208406 CN 03208406 CN 03208406 U CN03208406 U CN 03208406U CN 2676849 Y CN2676849 Y CN 2676849Y
- Authority
- CN
- China
- Prior art keywords
- bone screw
- opening
- hole
- concave arc
- connecting rod
- 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
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Abstract
The utility model relates to a bone screw structure which is fixed on a connecting rod, comprising a bone screw and a locked firmware. Wherein, the bone screw is provided with a connecting part and a bolt part, the upper part of the connecting part is provided with an opening, a concave arc slot, a fixing hole and a through hole, the connecting rod is penetrated through the opening, and the concave arc slot is near to the inner bottom of the opening. The fixing hole is penetrated to the opening and is corresponding to the concave arc slot, the through hole is arranged in the opening, the bolt part is provided with the perforating hole for connecting with the through hole, the locked firmware is fixed in the fixing hole of the connecting part, and the connecting rod is tightly pressed for positioning in the concave arc slot. The connecting rod is sunk and held in the concave arc slot, which makes the position easy and the connecting rod not easy to slide out of the opening, and the through hole of the connecting part of the bone screw fills bone cement to the perforating hole of the bolt part in order to strength the skeletal structure and make the lock of the bone screw more durable.
Description
Technical field
A kind of bone screw structure is particularly about a kind of connecting rod that is fixed in, in order to correct the bone screw structure of skeleton.
Background technology
One of function of skeleton mainly is to support each organ sites of human body, also keeps normal running as other organ that normally just can make of vertebrae.The religion vertebrae has lateral bending impaired, must live again to help its recovery by suitable assist location.And the assist location vertebrae is to prop up bone screw in a connecting rod fixed number, and bone screw is then with different angles, according to the location that locked, the position of vertebrae.
Known bone screw structure, see also illustrated in figures 1 and 2, comprise bone screw 50 and locking part 60, this bone screw 50 has connecting portion 51 and threaded shank 52, and these connecting portion 51 belows connect this threaded shank 52, and connecting portion 51 tops are provided with opening 53 and fixing hole 55, this opening 53 wears a connecting rod 70, this fixing hole 55 is through to opening 53, and the relevant medical apparatus and instruments of these locking part 60 utilizations is locked in the fixing hole 55 of this connecting portion 51, and this connecting rod 70 of packing.
Above-mentioned known bone screw structure, the opening apparent surface size of connecting portion is equidistant, because the space of human body is little, the limited flexibility of operation technique, need to grip fixedly locking part of medical apparatus and instruments on the one hand, need take into account the angle position of different bone screws on the one hand, when connecting rod is arranged in opening, have the generation of displacement and be difficult for having and cooperate accurately with bone screw, and connecting rod only depends on the application of force packing of locking part line contact ground, in case a little error is arranged, the packing of locking part just is not enough to guarantee the strong fix of connecting rod, and especially bone screw respective outer side edges connecting rod mainly is fixedly vertebrae, if connecting rod is loosening, just lose its function, very and easily because of connecting rod breaks away from bone screw from opening, and jeopardize vertebrae and peripheral cell tissue.
Therefore as from the foregoing, above-mentioned known bone screw structure on reality is used, obviously has inconvenience and remains to be improved with shortcoming.
The utility model content
Main purpose of the present utility model is to provide a kind of bone screw structure, makes cooperating with fixing more easy and in a down-to-earth manner between bone screw and the connecting rod.
An of the present utility model purpose is to provide a kind of bone screw structure, makes the locking between bone screw and the skeleton more firm.
In order to reach above-mentioned purpose, this utility model mainly provides a kind of bone screw structure, be fixed in a connecting rod, comprise bone screw and locking part, wherein this bone screw has connecting portion and threaded shank, this connecting portion below connects this threaded shank, the connecting portion top is provided with opening, following concave arc groove, fixing hole and through hole, this opening wears this connecting rod, this time concave arc groove is near the opening inner bottom surface, this fixing hole is through to opening and with respect to following concave arc groove, this through hole is positioned at opening, and this threaded shank is provided with perforation and is communicated in through hole; And this locking part is locked in the fixing hole of this connecting portion, and this connecting rod of packing is positioned in this time concave arc groove.
After this connecting rod is arranged in the opening of connecting portion of bone screw, sink to being contained in down in the concave arc groove, the location is difficult for skidding off opening easily: and the through hole of the connecting portion of this bone screw pours into the perforation of bone cement to this threaded shank, strengthens skeleton and makes the locking of bone screw more firm.
Description of drawings
Fig. 1 is the three-dimensional exploded view of known bone screw structure.
Fig. 2 is fixed in the partial sectional view of a connecting rod for known bone screw structure.
Fig. 3 is a three-dimensional exploded view of the present utility model.
Fig. 4 is a three-dimensional combination figure of the present utility model.
Fig. 5 is a cross sectional side view of the present utility model.
Fig. 6 is fixed in the cross sectional side view of a connecting rod for this utility model.
Fig. 7 is fixed in a connecting rod for this utility model and is locked in the partial sectional view of skeleton.
Connecting portion 51 threaded shank 52
Opening 53 fixing holes 55
Locking part 60
Connecting rod 70
Connecting portion 11 threaded shank 12
13 times concave arc grooves 14 of opening
Fixing hole 15 through holes 16
Locking part 20
Connecting rod 30
The specific embodiment
For further setting forth this utility model is to reach technological means and the effect that predetermined purpose is taked, see also following about detailed description of the present utility model and accompanying drawing, believe the purpose of this utility model, feature and characteristics, go deep into and concrete understanding when getting one thus, yet appended graphic reference and the explanation usefulness of only providing not is to be used for this utility model is limited.
See also Fig. 3 to shown in Figure 6, this utility model is a kind of bone screw structure, is fixed in a connecting rod 30, comprises bone screw 10 and locking part 20, wherein:
Locking part 20, it is locked in the fixing hole 15 of this connecting portion 11, and this connecting rod 30 of packing is positioned in this time concave arc groove 14, and as shown in Figure 3, this locking part 20 is a hexagon socket head cap screw, and the fixing hole 15 of this bone screw 10 is provided with screw-internal thread fit in this locking part 20.
Please consult shown in Figure 7 simultaneously, the threaded shank 12 of bone screw 10 according to required angle and fixed-site in skeleton 40, bone cement (figure slightly) then pours into perforation 17 to threaded shank 12 from the through hole 16 of connecting portion 11, with strengthen skeleton 40 structures and be condensed in skeleton 40 and bone screw 10 between, make both lockings more firm, connecting rod 30 then is arranged in the opening 13 of the connecting rod 30 of bone screw 10, after connecting rod 30 sinks to being contained in down concave arc groove 14, because following concave arc groove 14 is lower than opening 13 surfaces, the location of connecting rod 30 is cooperated easily, can not skid off from opening 13, by the packing of locking part 20, make the fixing more sturdy of connecting rod 30 again, the rectification of skeleton 40 is safer, the center of circle of this fixing hole 15 when coaxial, more can make connecting rod 30 fit in down concave arc groove 14 with the center of curvature of this time concave arc groove 14.
Be with, by bone screw structure of the present utility model, have characteristics described as follows:
(1) the set lower concave arc groove of the opening inner bottom surface of the connecting portion of this bone screw cooperates connecting rod The surface, make connecting rod be arranged in opening after, sink to being contained in the lower concave arc groove, the location easily, And by the packing of locking part, make the fixing more sturdy of connecting rod, be difficult for directly along opening Skid off.
(2) through hole of the connecting portion of this bone screw is communicated to the perforation of this threaded shank, and bone screw is provided Pour into bone cement after being locked in bone, the cement augmentation skeletal structure also is condensed in bone and murices Between the silk, make the locking of bone screw more firm.
Claims (8)
1, a kind of bone screw structure is fixed in a connecting rod, it is characterized in that, this structure comprises:
Bone screw, it has connecting portion and threaded shank, this connecting portion below connects this threaded shank, the connecting portion top is provided with opening, following concave arc groove, fixing hole and through hole, this opening wears this connecting rod, and this time concave arc groove is near the opening inner bottom surface, and this fixing hole is through to opening and with respect to concave arc groove down, this through hole is positioned at opening, and this threaded shank is provided with perforation and is communicated in through hole; And
Locking part, it is locked in the fixing hole of this connecting portion, and this connecting rod of packing is positioned in this time concave arc groove.
2, bone screw structure as claimed in claim 1 is characterized in that, the punch position of this threaded shank is distributed in default different cross section.
3, bone screw structure as claimed in claim 1 is characterized in that, the punch position of this threaded shank has default differential seat angle.
4, bone screw structure as claimed in claim 1 is characterized in that, the perforation of this threaded shank has default different apertures.
5, bone screw structure as claimed in claim 1 is characterized in that, this locking part is a hexagon socket head cap screw, and the fixing hole of this bone screw is provided with screw-internal thread fit in this locking part.
6, bone screw structure as claimed in claim 1 is characterized in that, the bottom diameter of this threaded shank is gradually little to the threaded shank end from connecting portion one end.
7, bone screw structure as claimed in claim 1 is characterized in that, the through hole of this connecting portion is positioned at the following concave arc groove of this opening.
8, bone screw structure as claimed in claim 1 is characterized in that, the center of circle of this fixing hole is coaxial with the center of curvature of this time concave arc groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03208406 CN2676849Y (en) | 2003-08-25 | 2003-08-25 | Bone screw structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03208406 CN2676849Y (en) | 2003-08-25 | 2003-08-25 | Bone screw structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2676849Y true CN2676849Y (en) | 2005-02-09 |
Family
ID=34580246
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03208406 Expired - Fee Related CN2676849Y (en) | 2003-08-25 | 2003-08-25 | Bone screw structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2676849Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103142302A (en) * | 2013-03-19 | 2013-06-12 | 胡晓晖 | Bone screw |
-
2003
- 2003-08-25 CN CN 03208406 patent/CN2676849Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103142302A (en) * | 2013-03-19 | 2013-06-12 | 胡晓晖 | Bone screw |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |