CN208989101U - A kind of anti-rotation double-headed hollow forcing screw - Google Patents
A kind of anti-rotation double-headed hollow forcing screw Download PDFInfo
- Publication number
- CN208989101U CN208989101U CN201820506601.3U CN201820506601U CN208989101U CN 208989101 U CN208989101 U CN 208989101U CN 201820506601 U CN201820506601 U CN 201820506601U CN 208989101 U CN208989101 U CN 208989101U
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- China
- Prior art keywords
- rotation
- rod
- forcing screw
- outer edge
- headed hollow
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Abstract
A kind of anti-rotation double-headed hollow forcing screw, it is related to medical field, the utility model on the body of rod (5) by being arranged anti-rotation groove (3), anti- rotation needle (1) is then set in anti-rotation groove, especially suitable for avulsion fracture, condyles fracture, the fixation of the small fracture of hand and foot, the utility model have practical, Micro-operation, safely and effectively, it light reseting fracture and can prevent profound true between sclerite, effectively maintain to stablize between bone block, conducive to union etc., the features such as the utility model has structure simple, easy to use, is suitble to large-scale promotion and application.
Description
Technical field
The utility model relates to medical fields, and in particular to a kind of anti-rotation double-headed hollow forcing screw.
Background technique
It is known, clinically, the fracture of condyles caused by various wounds, fracture of scaphoid bone of wrist, hand and foot fracture, femoral neck bone
Folding, avulsion fracture are very common, and operation needs to reset between sclerite often, and are carried out temporarily or forever with cannulated compression screw
Fixed long, clinically common double-headed hollow forcing screw or hollow screw have reset and pressurization between sclerite, but single
Though one hollow screw has pressurization, it is difficult to prevent from rotating between sclerite, though the more pieces of anti-rotations of screw energy, in pressurization, power
It learns effect to be difficult to reach consistent parallel, therefore influences it between the pressurization sclerite, for some small bone blocks, such as wrist boat
Bone, it is difficult to it carries out more pieces of screws and fixes, to influence fracture fixation, increase nonunion rate, more pieces of screws consolidate timing demands height,
Operating time is long, increases the pain etc. of patient.
Summary of the invention
To overcome deficiency present in background technique, the utility model provides a kind of anti-rotation double-headed hollow forcing screw,
Then by the way that anti-rotation groove is arranged on the body of rod anti-rotation needle is arranged in anti-rotation groove in the utility model, have Micro-operation, reality
With property it is strong, can be between carrying out appropriateness loaded reset sclerite, while anti-rotation needle is placed in after the reset, to prevent sclerite from rotating
Displacement, to stablize between keeping sclerite, conducive to healing etc. between bone block.
To realize goal of the invention as described above, the utility model uses technical solution as described below:
A kind of anti-rotation double-headed hollow forcing screw, including anti-rotation groove, tailing screw flight, the body of rod and head threads, the bar
The diameter on body top is greater than the diameter of lower part, and tailing screw flight, the outer rim in body of rod lower part are equipped on the outer edge surface on body of rod top
Face is equipped with head threads, perforates in the guide pin that the middle part of body of rod upper surface is equipped with perforation to lower end surface, perforates in the guide pin
Upper port be equipped with screw mouth, on the outer edge surface of the body of rod be equipped with perforation to upper and lower end face anti-rotation groove, it is described it is anti-rotation it is recessed
It is movably equipped with anti-rotation needle in slot and forms the anti-rotation double-headed hollow forcing screw.
The anti-rotation double-headed hollow forcing screw, the anti-rotation needle are Kirschner wire.
The outer edge surface of the anti-rotation double-headed hollow forcing screw, the lower end of the Kirschner wire is equipped with external screw thread.
The anti-rotation double-headed hollow forcing screw, the anti-rotation groove are U-shaped groove.
The lower end of the anti-rotation double-headed hollow forcing screw, the body of rod is equipped with small top and big bottom bullet.
The anti-rotation double-headed hollow forcing screw, the diameter in the middle part of the body of rod outer edge surface are less than both ends outer edge surface
Diameter.
Using technical solution as described above, the utility model has superiority as described below:
Then by the way that anti-rotation groove is arranged on the body of rod anti-rotation needle is arranged in anti-rotation groove in the utility model, especially suitable
For avulsion fracture, condyles fracture, the fixation of the small fracture of hand and foot, the utility model has practical, Micro-operation, safe
Effectively, it light reseting fracture and can prevent profound true between sclerite, effectively maintain to stablize between bone block, be conducive to union etc., this
The features such as utility model has structure simple, easy to use, is suitble to large-scale promotion and application.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
In figure: 1, anti-rotation needle；2, mouth is screwed；3, anti-rotation groove；4, tailing screw flight；5, the body of rod；6, head threads.
Specific embodiment
The utility model can be explained in more detail by the following examples, the utility model is not limited to following
Embodiment；
A kind of anti-rotation double-headed hollow forcing screw in conjunction with described in attached drawing 1, including anti-rotation groove 3, tailing screw flight 4, the body of rod 5
With head threads 6, the diameter on 5 top of the body of rod is greater than the diameter of lower part, and tail portion spiral shell is equipped on the outer edge surface on 5 top of the body of rod
Line 4 is equipped with head threads 6 on the outer edge surface of 5 lower part of the body of rod, is equipped with perforation to lower end surface at the middle part of 5 upper surface of the body of rod
Guide pin perforation, is equipped in the upper port of guide pin perforation and screws mouth 2, and perforation is equipped on the outer edge surface of the body of rod 5 to upper and lower side
The anti-rotation groove 3 in face, the anti-rotation groove 3 are U-shaped groove, are movably equipped with described in anti-rotation needle 1 formed in the anti-rotation groove 3
Anti- rotation double-headed hollow forcing screw.
Wherein the anti-rotation needle 1 is Kirschner wire.Further, outer spiral shell is equipped on the outer edge surface of the lower end of the Kirschner wire
Line.
Further, the lower end of the body of rod 5 is equipped with small top and big bottom bullet.
Further, the diameter in the middle part of 5 outer edge surface of the body of rod is less than the diameter of both ends outer edge surface.
The utility model in the specific implementation process, after the reduction of the fracture is fixed, pierces perspective guide pin first, has an X-rayed guide pin
After being placed in appropriate location, is pierced with core drill along perspective guide pin, then extracts drill bit, be screwed into anti-rotation double-headed hollow forcing screw,
After anti-rotation double-headed hollow forcing screw is screwed into, mating anti-rotation is squeezed into along the anti-rotation groove 3 on anti-rotation double-headed hollow forcing screw
Anti- rotation needle 1 is truncated after squeezing into suitable position in needle 1, anti-rotation needle 1, completes the fixation of bone at this time.
The non-detailed portion of the utility model is the prior art.
The embodiment selected herein for open the purpose of this utility model, is presently considered to be suitable, still,
It is to be understood that the utility model is intended to include all changes for the embodiment that all belong in this design and invention scope and changes
Into.
Claims (6)
1. a kind of anti-rotation double-headed hollow forcing screw, including anti-rotation groove (3), tailing screw flight (4), the body of rod (5) and head threads
(6), it is characterized in that: the diameter on the body of rod (5) top is greater than the diameter of lower part, is equipped on the outer edge surface on the body of rod (5) top
Tailing screw flight (4) is equipped with head threads (6) on the outer edge surface of the body of rod (5) lower part, is equipped at the middle part of the body of rod (5) upper surface
The guide pin penetrated through to lower end surface is perforated, and is equipped in the upper port of guide pin perforation and is screwed mouth (2), the outer edge surface in the body of rod (5)
It is equipped with the anti-rotation groove (3) of perforation to upper and lower end face, anti-rotation needle (1) is movably equipped in the anti-rotation groove (3) and forms institute
The anti-rotation double-headed hollow forcing screw stated.
2. anti-rotation double-headed hollow forcing screw according to claim 1, it is characterized in that: the anti-rotation needle (1) is Kirschner wire.
3. anti-rotation double-headed hollow forcing screw according to claim 2, it is characterized in that: the lower end of the Kirschner wire is outer
Edge face is equipped with external screw thread.
4. anti-rotation double-headed hollow forcing screw according to claim 1, it is characterized in that: the anti-rotation groove (3) is that U-shaped is recessed
Slot.
5. anti-rotation double-headed hollow forcing screw according to claim 1, it is characterized in that: the lower end of the body of rod (5) is set
There is small top and big bottom bullet.
6. anti-rotation double-headed hollow forcing screw according to claim 1, it is characterized in that: in the middle part of the body of rod (5) outer edge surface
Diameter be less than both ends outer edge surface diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820506601.3U CN208989101U (en) | 2018-04-11 | 2018-04-11 | A kind of anti-rotation double-headed hollow forcing screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820506601.3U CN208989101U (en) | 2018-04-11 | 2018-04-11 | A kind of anti-rotation double-headed hollow forcing screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208989101U true CN208989101U (en) | 2019-06-18 |
Family
ID=66794697
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820506601.3U Expired - Fee Related CN208989101U (en) | 2018-04-11 | 2018-04-11 | A kind of anti-rotation double-headed hollow forcing screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208989101U (en) |
-
2018
- 2018-04-11 CN CN201820506601.3U patent/CN208989101U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| 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: 20190618 Termination date: 20200411 |