CN206138197U - Locking screw for orthopedics - Google Patents
Locking screw for orthopedics Download PDFInfo
- Publication number
- CN206138197U CN206138197U CN201620701056.4U CN201620701056U CN206138197U CN 206138197 U CN206138197 U CN 206138197U CN 201620701056 U CN201620701056 U CN 201620701056U CN 206138197 U CN206138197 U CN 206138197U
- Authority
- CN
- China
- Prior art keywords
- screw
- groove
- draw
- screw cap
- interior hexagonal
- 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 discloses a locking screw for orthopedics, including the shank of screw, the top of shank of screw is provided with the screw cap, the shape of screw cap upper surface is regular hexagon, and interior hexagonal recess has been seted up at the middle part of screw cap upper surface to the draw -in groove with interior hexagonal recess intercommunication is seted up to the screw cap upper surface, the degree of depth of draw -in groove is the half of interior hexagonal depth of groove, and the quantity of draw -in groove is six, and six draw -in grooves correspond respectively sets up the middle part on six limits of screw cap upper surface. This locking screw for orthopedics is through the cooperation of draw -in groove, cross recess, interior hexagonal recess, straight line groove and screw cap to can take out the screw through the apparatus that takes out of difference, even draw -in groove, cross recess, interior hexagonal recess, straight line groove's the smooth silk phenomenon of one of them emergence also can be taken out the screw through other modes of taking out, it is comparatively convenient to use, the utility model discloses simple structure, convenient to use, the practicality is stronger, is fit for extensively promoting.
Description
Technical field
The utility model is related to technical field of medical instruments, specially a kind of orthopaedics lock screw.
Background technology
Orthopaedics lock screw is mainly used in recombining bone in prior art, and auxiliary bones regrow, fixed
Bone plate, particularly coordinates locking compress hone lamella, forms firm inner fixed support.Generally such screw can be protected for a long time
The internal of patient is stayed in, needs to take out on these screws after fracture recovering.But during screw takes out, the top of screw cap
Easily there is stripped thread phenomenon because removal equipment abrasion or screw cap are unable to good contact with both removal equipments in end.Once occur
Such case, the taking-up to shank of screw will be cumbersome, and device for taking out broken nail tool can not be used, and need to grind off screw cap using industrial drill bit
And the steel plate for contacting, reuse device for taking out broken nail tool and take out shank of screw, the operating time of operation is extended, increase operation
The probability of pollution, postoperative generation infection, the probability fractured again are increased, and increase the economic and psychological burden of patient.
The content of the invention
The purpose of this utility model is to provide a kind of orthopaedics lock screw, to solve above-mentioned background technology in propose
Problem.
For achieving the above object, the utility model provides following technical scheme：A kind of orthopaedics lock screw, including screw
Bar, the top of the shank of screw is provided with screw cap, and the screw cap upper surface is shaped as regular hexagon, screw cap upper surface
Middle part offer interior hexagonal groove, and screw cap upper surface offers the draw-in groove connected with interior hexagonal groove, the draw-in groove
Depth be 1/2nd of interior hexagonal groove depth, the quantity of draw-in groove is six, and six draw-in grooves correspond to be opened in screw respectively
Cross recess, the external diameter of a circle of cross recess are offered in the middle part of the middle part on six sides in cap upper surface, and interior hexagonal groove bottom surface
For 3/4ths of interior hexagonal groove inscribed circle diameter, flat recess, the flat recess are communicated with the middle part of the cross groove bottom
The line between line and cross recessed front-end and back-end between front-end and back-end is respectively positioned in same vertical plane, and one
Word groove is located at the inside of shank of screw, and the depth of flat recess is 1/6th of shank of screw depth.
Compared with prior art, the beneficial effects of the utility model are：The orthopaedics lock screw, by draw-in groove, cross
The cooperation of groove, interior hexagonal groove, flat recess and screw cap such that it is able to taken out on screw by different removal equipments, even if
Draw-in groove, cross recess, interior hexagonal groove, one of generation stripped thread phenomenon of flat recess, it is also possible to will by way of other taking-ups
Screw takes out, using more convenient.
Description of the drawings
Fig. 1 is the utility model structural representation；
Fig. 2 is the utility model surface structure schematic diagram；
Fig. 3 is the utility model cross-sectional view；
Fig. 4 is the utility model shank of screw cross-sectional view.
In figure：1 shank of screw, 2 screw caps, 3 draw-in grooves, 4 cross recesses, hexagonal groove, 6 flat recesses in 5.
Specific embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the utility model, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment for being obtained, belongs to the scope of the utility model protection.
Fig. 1-4 are referred to, the utility model provides a kind of technical scheme：A kind of orthopaedics lock screw, including shank of screw
1, the top of shank of screw 1 is provided with screw cap 2, and the upper surface of screw cap 2 is shaped as regular hexagon such that it is able to using interior hexagonal
Screwdriver engages with the lateral surface of screw cap 2 and takes out on screw, and interior hexagonal groove 5 is offered in the middle part of the upper surface of screw cap 2, and
And the upper surface of screw cap 2 offers the draw-in groove 3 connected with interior hexagonal groove 5, the depth of draw-in groove 3 is the depth of interior hexagonal groove 5
1/2nd, the quantity of draw-in groove 3 is six, and six draw-in grooves 3 correspond to respectively the middle part for being opened in six sides in upper surface of screw cap 2,
So as to when being taken out on screw using draw-in groove 3, the stress of six draw-in grooves 3 is more uniform, hexagonal groove 5 is offered in the middle part of bottom surface
Cross recess 4,3/4ths of the inscribed circle diameter of a diameter of interior hexagonal groove 5 of the circumscribed circle of cross recess 4, so that cross recess 4 is not
Shank of screw 1 can be impacted with the intensity of the junction of screw cap 2, flat recess 6, a word are communicated with the middle part of the bottom surface of cross recess 4
Line between the front-end and back-end of groove 6 and the line between the front-end and back-end of cross recess 4 are respectively positioned in same vertical plane, and
And flat recess 6 is located at the inside of shank of screw 1, the depth of flat recess 6 is 1/6th of the depth of shank of screw 1, is ruptured in screw cap 2
When, screw is taken out using flat recess 6, matched somebody with somebody with screw cap 2 by draw-in groove 3, cross recess 4, interior hexagonal groove 5, flat recess 6
Close such that it is able to taken out on screw by different removal equipments, even if draw-in groove 3, cross recess 4, interior hexagonal groove 5, flat recess 6
One of generation stripped thread phenomenon, it is also possible to screw is taken out by other taking-up modes, using more convenient.
While there has been shown and described that embodiment of the present utility model, for the ordinary skill in the art,
It is appreciated that these embodiments can be carried out various changes in the case of without departing from principle of the present utility model and spirit, repaiies
Change, replace and modification, scope of the present utility model is defined by the appended claims and the equivalents thereof.
Claims (1)
1. a kind of orthopaedics lock screw, including shank of screw（1）, the shank of screw（1）Top be provided with screw cap（2）, its
It is characterised by：The screw cap（2）Upper surface is shaped as regular hexagon, screw cap（2）Interior six are offered in the middle part of upper surface
Angle groove（5）, and screw cap（2）Upper surface offers and interior hexagonal groove（5）The draw-in groove of connection（3）, the draw-in groove（3）'s
Depth is interior hexagonal groove（5）/ 2nd of depth, draw-in groove（3）Quantity be six, six draw-in grooves（3）Correspond to respectively and open up
In screw cap（2）The middle part on six sides in upper surface, and interior hexagonal groove（5）Cross recess is offered in the middle part of bottom surface（4）, cross
Groove（4）The a diameter of interior hexagonal groove of circumscribed circle（5）3/4ths of inscribed circle diameter, the cross recess（4）The middle part of bottom surface
It is communicated with flat recess（6）, the flat recess（6）Line and cross recess between front-end and back-end（4）Front-end and back-end between
Line be respectively positioned in same vertical plane, and flat recess（6）Positioned at shank of screw（1）Inside, flat recess（6）Depth be
Shank of screw（1）/ 6th of depth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620701056.4U CN206138197U (en) | 2016-07-06 | 2016-07-06 | Locking screw for orthopedics |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620701056.4U CN206138197U (en) | 2016-07-06 | 2016-07-06 | Locking screw for orthopedics |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206138197U true CN206138197U (en) | 2017-05-03 |
Family
ID=58616369
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620701056.4U Expired - Fee Related CN206138197U (en) | 2016-07-06 | 2016-07-06 | Locking screw for orthopedics |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206138197U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108742819A (en) * | 2018-06-15 | 2018-11-06 | 梁兆国 | A kind of bone surgery internal fixation screw and move back spike devices |
-
2016
- 2016-07-06 CN CN201620701056.4U patent/CN206138197U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108742819A (en) * | 2018-06-15 | 2018-11-06 | 梁兆国 | A kind of bone surgery internal fixation screw and move back spike devices |
| CN108742819B (en) * | 2018-06-15 | 2021-03-19 | 张学瑜 | Internal fixing screw and screw withdrawing device for orthopedic operation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| DD01 | Delivery of document by public notice |
Addressee: Zhong Rong Document name: Notification of Approving Refund |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice | ||
| DD01 | Delivery of document by public notice |
Addressee: Zhong Rong Document name: Notification of Approving Refund |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170503 Termination date: 20180706 |