CN201642296U - Reinforced pressurizing screw - Google Patents
Reinforced pressurizing screw Download PDFInfo
- Publication number
- CN201642296U CN201642296U CN2010201723518U CN201020172351U CN201642296U CN 201642296 U CN201642296 U CN 201642296U CN 2010201723518 U CN2010201723518 U CN 2010201723518U CN 201020172351 U CN201020172351 U CN 201020172351U CN 201642296 U CN201642296 U CN 201642296U
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- Prior art keywords
- screw
- screw rod
- diameter
- link
- reinforced
- 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 an orthopedic screw, in particular to a reinforced pressurizing screw, which comprises a screw rod and a screw cap connected with the screw rod. The diameter of a connecting end of the screw rod with the screw cap is larger than that of an extended end of the screw rod, and a chip pocket lower than thread roots is arranged on threads at the connecting end. Compared with the prior art, the reinforced pressurizing screw adopting the technical scheme has the advantages of simple structure, convenient manufacture, convenience for the screw to be screwed into a bone hole with a smaller diameter by self-threads as the diameter of the connecting end is larger than that of the extended end of the screw rod and the chip pocket lower than the thread roots is arranged at the connecting end of the screw, and capability of leading fixation to be firmer than a common screw.
Description
Technical field:
This utility model relates to a kind of orthopaedics screw, particularly a kind of enhancing forcing screw.
Background technology:
In the process of fracture internal fixation, regular meeting runs into screw the fracture back or the situation of later stage screw loosening, gets the screw that needs to fracture after screw fractures and takes out, and increases the difficulty of operation technique, prolongs operating time; The later stage screw loosening can cause internal fixation loosening, and displacement fracture influences the function of limbs.
The utility model content:
Goal of the invention of the present utility model is to overcome the deficiency of background technology and provides a kind of in the process that the fracture internal fixation screws in and screws out, and can avoid the screw generation of situation that fractures, and avoid loosening enhancing forcing screw of later stage.
This utility model adopts following technical scheme:
A kind of enhancing forcing screw comprises screw rod, the nut that is connected with screw rod, and the link diameter of this screw rod and nut is greater than the diameter of screw rod elongated end, and the screw thread of this link is provided with the chip pocket that is lower than Bottom of Thread.
This utility model of employing technique scheme compared with prior art, its advantage is: simple in structure, easy to make, the link diameter is greater than the diameter of screw rod elongated end, the link of screw is provided with the chip pocket that is lower than Bottom of Thread, be convenient to screw by self be threaded in the bone hole than minor diameter, make fixing more firm than plain screw.
As a kind of preferred structure of the present utility model, the tapered structure of described link, its bigger diameter end is connected with nut.
Description of drawings:
Fig. 1 is a structural representation of the present utility model.
The specific embodiment:
Below in conjunction with drawings and Examples in detail this utility model is described in detail:
A kind of enhancing forcing screw is referring to accompanying drawing 1, among the figure: nut 1, link 2, chip pocket 3, elongated end 4.
Screw rod is made up of link 2 and elongated end 4, and link 2 diameters of screw rod and nut 1 are greater than the diameter of screw rod elongated end 4, and the screw thread of link 2 is provided with the chip pocket 3 that is lower than Bottom of Thread.
This screw is identical with plain screw, directly screws in behind the drilling and tapping to get final product, and during the fracture internal fixation, at first presses diameter boring, the tapping of the anterior screw rod of screw, selects the screw of suitable length then and puts into and screw.When present embodiment screwed in to link 2, the chip pocket that is lower than Bottom of Thread 3 that is provided with on the link 2 made the screw thread of link 2 be interrupted shape structure.Like this when relatively slightly little bone hole screws in, can the limit carry out the tapping thread limit and be tightened, the bone bits that are cut in the process of precession can be discharged in chip pocket 3, and can not influence fixing of screw itself.
Nut 1 in the present embodiment is big than plain screw, thus laborsaving than plain screw when screw screws in and screw out, and than plain screw frangibility not.
Claims (2)
1. one kind strengthens forcing screw, comprises screw rod, and the nut that is connected with screw rod is characterized in that: the link diameter of this screw rod and nut is greater than the diameter of screw rod elongated end, and the screw thread of this link is provided with the chip pocket that is lower than Bottom of Thread.
2. enhancing forcing screw according to claim 1 is characterized in that: the tapered structure of described link, its bigger diameter end is connected with nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201723518U CN201642296U (en) | 2010-04-23 | 2010-04-23 | Reinforced pressurizing screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201723518U CN201642296U (en) | 2010-04-23 | 2010-04-23 | Reinforced pressurizing screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201642296U true CN201642296U (en) | 2010-11-24 |
Family
ID=43107481
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201723518U Expired - Fee Related CN201642296U (en) | 2010-04-23 | 2010-04-23 | Reinforced pressurizing screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201642296U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108703796A (en) * | 2018-06-08 | 2018-10-26 | 创美得医疗器械（天津）有限公司 | Explosion-proof compressive hollow screw without a head |
-
2010
- 2010-04-23 CN CN2010201723518U patent/CN201642296U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108703796A (en) * | 2018-06-08 | 2018-10-26 | 创美得医疗器械（天津）有限公司 | Explosion-proof compressive hollow screw without a head |
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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: 20110423 |