CN200948166Y - Screw for connecting bones - Google Patents
Screw for connecting bones Download PDFInfo
- Publication number
- CN200948166Y CN200948166Y CN 200620077896 CN200620077896U CN200948166Y CN 200948166 Y CN200948166 Y CN 200948166Y CN 200620077896 CN200620077896 CN 200620077896 CN 200620077896 U CN200620077896 U CN 200620077896U CN 200948166 Y CN200948166 Y CN 200948166Y
- Authority
- CN
- China
- Prior art keywords
- screw
- shank
- bone
- root
- screw 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 - Lifetime
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Abstract
The utility model relates to orthopedics medical equipment, in particular to a bone screw for osteotrauma fixation in bone fracture treatment, the device comprises screw rod and screw cap, the screw rod is made up with screw rod root and screw rod anterior extremity, the diameter of the screw rod root is larger than that of the screw rod anterior extremity, and the spiral marking direction of the root and anterior extremity is the same. The bone screw can be connected together with the bone plate through the spiral marking of the screw rod root and the spiral marking hole of the bone plate, so that the bone screw will not proceed angle offset to the bone plate for compression and the union of fracture will not be affected.
Description
Technical field
This utility model relates to a kind of orthopedic medical device, especially a kind of bone screw that is used for fixing the injury of the bone in fractures.
Background technology
It is fixing often to need to utilize blade plate and bone screw that fracture site is implemented in bone surgery, previously used bone screw is after fixing blade plate, reasons such as motion owing to the patient, bone screw can produce slippage in the screwed hole of blade plate, the healing of influence fracture, this because bone screw and blade plate are to rely on pressure to combine after fixing, is not an integral body mainly.
Summary of the invention
In order to overcome the defective that original bone screw slides in the blade plate screwed hole, the purpose of this utility model provides a kind of bone screw that can be combined into an integral body with blade plate.
The technical scheme that its technical problem that solves this utility model adopts is: a kind of bone screw, have shank of screw, screw cap, shank of screw is made up of shank of screw root and shank of screw front end, the diameter of shank of screw root is greater than the diameter of shank of screw front end, and the shank of screw root is identical with the thread rotary orientation of shank of screw front end.
Further, the pitch of shank of screw root is less than the pitch of shank of screw front end; The length of screw is consistent on the length of shank of screw root and the blade plate; The lower edge of screw cap is circular-arc; Has the blossom type endoporus on the screw cap.
The beneficial effects of the utility model are: combine with screwed hole on the blade plate by the screw thread of shank of screw root and make bone screw and blade plate be linked to be an integral body, make that bone screw can be because of not stressed and angular deflection takes place on blade plate, the healing of influence fracture, the contact surface maximum of the lower edge of circular-arc screw cap and blade plate is stressed more even.
Description of drawings
Below in conjunction with drawings and Examples this utility model is further specified.
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is a upward view of the present utility model.
Among the figure: 1. shank of screw, 2. screw cap, 3. shank of screw root, 4. shank of screw front end, 5. blossom type endoporus.
The specific embodiment
A kind of bone screw, have shank of screw 1, screw cap 2, shank of screw 1 is made up of shank of screw root 3 and shank of screw front end 4, the diameter of shank of screw root 3 is greater than the diameter of shank of screw front end 4, shank of screw root 3 is identical with the thread rotary orientation of shank of screw front end 4, and the pitch of shank of screw root 3 is less than the pitch of shank of screw front end 4; The length of screw is consistent on the length of shank of screw root 3 and the blade plate, combines with screwed hole on the blade plate by shank of screw root 3 screw threads to make bone screw and blade plate be linked to be an integral body, and the lower edge of screw cap 2 is circular-arc; Has the blossom type endoporus on the screw cap 2.
Claims (5)
1, a kind of bone screw, have shank of screw (1), screw cap (2), it is characterized in that: described shank of screw (1) is made up of shank of screw root (3) and shank of screw front end (4), the diameter of shank of screw root (3) is greater than the diameter of shank of screw front end (4), and shank of screw root (3) is identical with the thread rotary orientation of shank of screw front end (4).
2, bone screw according to claim 1 is characterized in that: the pitch of described shank of screw root (3) is less than the pitch of shank of screw front end (4).
3, bone screw according to claim 1 is characterized in that: the length of screw is consistent on the length of shank of screw root (3) and the blade plate.
4, bone screw according to claim 1 is characterized in that: the lower edge of described screw cap (2) is circular-arc.
5, bone screw according to claim 1 is characterized in that: have blossom type endoporus (5) on the described screw cap (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620077896 CN200948166Y (en) | 2006-09-26 | 2006-09-26 | Screw for connecting bones |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620077896 CN200948166Y (en) | 2006-09-26 | 2006-09-26 | Screw for connecting bones |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200948166Y true CN200948166Y (en) | 2007-09-19 |
Family
ID=38890702
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620077896 Expired - Lifetime CN200948166Y (en) | 2006-09-26 | 2006-09-26 | Screw for connecting bones |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200948166Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105997218A (en) * | 2016-06-29 | 2016-10-12 | 江苏艾迪尔医疗科技股份有限公司 | Humeral inverted intramedullary nail |
-
2006
- 2006-09-26 CN CN 200620077896 patent/CN200948166Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105997218A (en) * | 2016-06-29 | 2016-10-12 | 江苏艾迪尔医疗科技股份有限公司 | Humeral inverted intramedullary nail |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20070919 |
|
| EXPY | Termination of patent right or utility model |