CN206390983U - The bone plate lock screw of anti-back button - Google Patents
The bone plate lock screw of anti-back button Download PDFInfo
- Publication number
- CN206390983U CN206390983U CN201620976654.2U CN201620976654U CN206390983U CN 206390983 U CN206390983 U CN 206390983U CN 201620976654 U CN201620976654 U CN 201620976654U CN 206390983 U CN206390983 U CN 206390983U
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- screw
- bone plate
- shank
- thread
- back button
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Abstract
The utility model discloses a kind of bone plate lock screw of anti-back button, including screw cap, the shank of screw that one end is connected with screw cap, and the thread head that the shank of screw other end is provided with；Cross recess is formed with described screw cap, described screw cap is provided with the connecting portion caved inward, described thread head and shank of screw with shank of screw junction is formed with screw thread, and described screw thread is extended on shank of screw from thread head.The utility model uses cross-shaped groove structure with bone plate mating part, lock screw can be screwed into hone lamella, because lock screw has the trend shunk to axle center, after bone plate locking, it can be played using the anti-expansion of itself and the close-fitting effect of bone plate, surgical procedure is simple, reduces operation risk.
Description
Technical field
The utility model is related to the technical field of medicine equipment, more particularly to a kind of bone plate lock screw of anti-back button.
Background technology
At present clinically, the lock screw essentially double thread of synthetism, coordinates bone plate to use, is mainly used in making
Bone is recombined, and auxiliary bones regrow, and lock screw can be retained in patient's body for a long time.When in use, by
It need to match and use with bone plate in double thread, but often occur that double thread moves back the phenomenon of button, and in operation, operation
Inconvenience, gets well to patient and impacts.Need a kind of more preferable to play a part of the lock screw of anti-back button.
Utility model content
The problem of the utility model is in order to solve above-mentioned, and a kind of bone plate lock screw of anti-back button is provided.
Technical solution adopted in the utility model is：
The bone plate lock screw of anti-back button of the present utility model, including screw cap, the screw that one end is connected with screw cap
Bar, and the thread head that the shank of screw other end is provided with；Cross recess, described screw cap and screw are formed with described screw cap
Bar junction, which is provided with the connecting portion that caves inward, described thread head and shank of screw, is formed with screw thread, and described screw thread is from spiral shell
Line head is extended on shank of screw.
Described screw cap includes vertical cross-section trapezoidal upper and lower part, the chi of described screw cap vertical cross-section
It is very little to be gradually reduced from top with bottom junction to two ends.
Described cross recess runs through whole screw cap.
The diameter of described connecting portion vertical cross-section is less than the diameter of each vertical cross-section of screw cap Yu shank of screw.
Screw thread on described thread head and shank of screw is double thread.
Described thread head is self-tapping drill stern construction.
The utility model has the advantages and positive effects of：
The utility model uses cross-shaped groove structure with bone plate mating part, lock screw can be screwed into hone lamella, due to lock
Determining screw has the trend shunk to axle center, after bone plate locking, can play close with bone plate using the anti-expansion of itself
The effect of cooperation, surgical procedure is simple, reduces operation risk.
Brief description of the drawings
Fig. 1 is front view of the present utility model；
Fig. 2 is left view of the present utility model.
Wherein：
1：Screw cap 2：Shank of screw
3：Thread head 4：Cross recess
5：Connecting portion 6：Top
7：Bottom.
Embodiment
Referring to the drawings and the utility model is described in detail embodiment.
As shown in Figure 1-2, the bone plate lock screw of anti-back button of the present utility model, including screw cap 1, one end and screw
The shank of screw 2 that cap 1 is connected, and the thread head 3 that the other end of shank of screw 2 is provided with；Cross recess 4 is formed with described screw cap 1,
Described screw cap 1 is provided with the connecting portion 5 caved inward, described thread head 3 and shape on shank of screw 2 with the junction of shank of screw 2
Into there is screw thread, described screw thread is extended on the bar of screw 2 from thread head 3.
Described screw cap 1 includes vertical cross-section trapezoidal top 6 and bottom 7, the described vertical cross-section of screw cap 1
Size be gradually reduced from top 6 with the junction of bottom 7 to two ends.
Described cross recess 4 runs through whole screw cap 1.
The diameter of the described vertical cross-section of connecting portion 5 is less than the diameter of each vertical cross-section of screw cap 1 Yu shank of screw 2.
Described thread head 3 is double thread with the screw thread on shank of screw 2.
Described thread head 3 is self-tapping drill stern construction.
The utility model is coordinating bone plate in use, thread head 3 is aligned on bone plate into corresponding screw, uses operation
Apparatus is locked in patient's body by the cross recess 4 on screw cap 1.Due to being formed with double end on thread head 3 and shank of screw 2
Screw thread, with stronger centripetal force, makes its quick locking in patient's body, and close by the anti-dilatancy and bone plate of itself
Coordinate.
The utility model uses cross-shaped groove structure with bone plate mating part, lock screw can be screwed into hone lamella, due to lock
Determining screw has the trend shunk to axle center, after bone plate locking, can play close with bone plate using the anti-expansion of itself
The effect of cooperation, surgical procedure is simple, reduces operation risk.
Embodiment of the present utility model is described in detail above, but the content is only of the present utility model preferable
Embodiment, it is impossible to be considered as being used to limit practical range of the present utility model.It is all according to present utility model application scope made it is equal
Deng change and improvement etc., all should still it belong within patent covering scope of the present utility model.
Claims (6)
1. a kind of bone plate lock screw of anti-back button, it is characterised in that：Including screw cap, the screw that one end is connected with screw cap
Bar, and the thread head that the shank of screw other end is provided with；Cross recess, described screw cap and screw are formed with described screw cap
Bar junction, which is provided with the connecting portion that caves inward, described thread head and shank of screw, is formed with screw thread, and described screw thread is from spiral shell
Line head is extended on shank of screw.
2. the bone plate lock screw of anti-back button according to claim 1, it is characterised in that：Described screw cap includes hanging down
Straightforward face trapezoidal upper and lower part, the size of described screw cap vertical cross-section is from top and bottom junction to two ends
It is gradually reduced.
3. the bone plate lock screw of anti-back button according to claim 1, it is characterised in that：Described cross recess is through whole
Individual screw cap.
4. the bone plate lock screw of anti-back button according to claim 1, it is characterised in that：Described connecting portion is vertically cut
The diameter in face is less than the diameter of each vertical cross-section of screw cap Yu shank of screw.
5. the bone plate lock screw of anti-back button according to claim 1, it is characterised in that：Described thread head and screw
Screw thread on bar is double thread.
6. the bone plate lock screw of anti-back button according to claim 1, it is characterised in that：Described thread head is self tapping
Drilling tail structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620976654.2U CN206390983U (en) | 2016-08-30 | 2016-08-30 | The bone plate lock screw of anti-back button |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620976654.2U CN206390983U (en) | 2016-08-30 | 2016-08-30 | The bone plate lock screw of anti-back button |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206390983U true CN206390983U (en) | 2017-08-11 |
Family
ID=59507119
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620976654.2U Active CN206390983U (en) | 2016-08-30 | 2016-08-30 | The bone plate lock screw of anti-back button |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206390983U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108338827A (en) * | 2018-03-15 | 2018-07-31 | 无锡圣诺亚科技有限公司 | Easily take out screw device |
-
2016
- 2016-08-30 CN CN201620976654.2U patent/CN206390983U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108338827A (en) * | 2018-03-15 | 2018-07-31 | 无锡圣诺亚科技有限公司 | Easily take out screw device |
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| GR01 | Patent grant |