CN201642293U - Anti-slip thread bone screw - Google Patents
Anti-slip thread bone screw Download PDFInfo
- Publication number
- CN201642293U CN201642293U CN2010201552478U CN201020155247U CN201642293U CN 201642293 U CN201642293 U CN 201642293U CN 2010201552478 U CN2010201552478 U CN 2010201552478U CN 201020155247 U CN201020155247 U CN 201020155247U CN 201642293 U CN201642293 U CN 201642293U
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- CN
- China
- Prior art keywords
- hexagonal
- bone screw
- screw
- stripped thread
- thread bone
- 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 and provides a novel anti-slip thread bone screw. The anti-slip thread bone screw is provided with two parts for taking out a screwdriver, wherein one part is an inner hexagon, and the other part is an outer hexagon; and the two parts can respectively be taken out by an inner hexagonal screwdriver and an outer hexagonal screwdriver, so as to lead the screw to have two normal methods to be taken out, thus avoiding the phenomenon that screw sliding threads caused by careless operation or other reasons when in operation can not be taken out normally.
Description
Technical field
This utility model relates to a kind of bone screw.
Background technology
The situation of stripped thread may appear in the present bone screw of medically using in the process of installing and taking out, cause screw to be difficult to take out even can not take out, the carrying out of influence operation even cause the failure of whole surgery.The method of dealing with that occurred the screw stripped thread in the past is with electric drill, mill nail device the head of a nail to be ground off, and behind the taking-up steel plate, the reuse core drill takes out screw or cuts off, takes off steel plate with big shaped steel after enlarging sclerotin, and the reuse clamp takes out screw.Above method has all strengthened the difficulty of operation, has brought unnecessary wound to the patient, has increased the probability that infects in the art.
Summary of the invention
For overcome traditional bone screw install or the taking-up process in the situation of the stripped thread that may occur, this utility model provides a kind of novel anti-stripped thread bone screw, it has two can be for the position of screwdriver taking-up, one is interior hexagonal, one is outer-hexagonal, can also take out respectively, make the taking-up of screw that two kinds of normal methods arranged by allen driver and outer-hexagonal screwdriver.Thereby avoid in operation is carried out the phenomenon that normally to take out because of the screw stripped thread due to careless manipulation or other reason.
The technical solution of the utility model is: the head of bone screw (1) comprises an interior hexagonal (2) and outer-hexagonal (3), six faces of interior hexagonal (2) and outer-hexagonal (3) are corresponding parallel respectively, the angle of phase cross surface is 120 degree, can be screwed into or take out screw by allen driver and outer-hexagonal screwdriver.
The beneficial effects of the utility model: can be screwed into and take out screw by two kinds of different modes, reduce because the probability that the bone screw stripped thread due to the reason such as operation technique is improper takes place.
Description of drawings
Fig. 1 is a front view of the present utility model, has reflected total structure, and wherein (1) is head, and (2) are interior hexagonal, and (3) are outer-hexagonal, and (4) are for screwing part.
Fig. 2 is a vertical view of the present utility model, reflected hexagonal (2) and outer-hexagonal (3) in the screw concrete shape and between neighbouring relationship.
The specific embodiment
Following accompanying drawings, as shown in Figure 1, screw head (1) comprises two parts, interior hexagonal (2) and outer-hexagonal (3).Angle between each face of interior hexagonal (2) is 120 degree, and is corresponding parallel between the face of each face of interior hexagonal (2) and outer-hexagonal (3).Angle between each face of outer-hexagonal (3) also is 120 degree.Allen driver can screw in or take out screw by interior hexagonal (2), and the outer-hexagonal screwdriver can pass through outer-hexagonal (3) and screw in or take out screw.When taking out screw, can when causing to take out smoothly, then can use the outer-hexagonal screwdriver instead earlier by take out anti-stripped thread bone screw by allen driver if stripped thread appears in interior hexagonal (2), take out anti-stripped thread bone screw by outer-hexagonal (3), order also can be put upside down.So just can greatly avoid in operation is carried out the phenomenon that normally to take out because of the screw stripped thread due to careless manipulation or other reason.
Claims (3)
1. an anti-stripped thread bone screw comprises head, interior hexagonal, outer-hexagonal and screws part, it is characterized in that: there are two positions that can supply screwdriver to take out in the head of anti-stripped thread bone screw, and one is interior hexagonal, and one is outer-hexagonal.
2. anti-stripped thread bone screw according to claim 1, it is characterized in that: head has an outer-hexagonal, and angle is 120 degree between per two crossing faces of outer-hexagonal.
3. anti-stripped thread bone screw according to claim 1 is characterized in that: head has hexagonal in, and angle is 120 degree between per two crossing faces of interior hexagonal, and each face is parallel with the face of corresponding outer-hexagonal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201552478U CN201642293U (en) | 2010-04-09 | 2010-04-09 | Anti-slip thread bone screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201552478U CN201642293U (en) | 2010-04-09 | 2010-04-09 | Anti-slip thread bone screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201642293U true CN201642293U (en) | 2010-11-24 |
Family
ID=43107478
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201552478U Expired - Fee Related CN201642293U (en) | 2010-04-09 | 2010-04-09 | Anti-slip thread bone screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201642293U (en) |
-
2010
- 2010-04-09 CN CN2010201552478U patent/CN201642293U/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 | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101124 Termination date: 20110409 |