CN208355547U - A kind of Orthopedic medical screw - Google Patents
A kind of Orthopedic medical screw Download PDFInfo
- Publication number
- CN208355547U CN208355547U CN201720996320.6U CN201720996320U CN208355547U CN 208355547 U CN208355547 U CN 208355547U CN 201720996320 U CN201720996320 U CN 201720996320U CN 208355547 U CN208355547 U CN 208355547U
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- CN
- China
- Prior art keywords
- screw
- orthopedic medical
- shank
- nut
- utility
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- 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.)
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Abstract
The utility model provides a kind of Orthopedic medical screw, belongs to orthopedic medical device technical field.The utility model includes shank of screw and the nut for being fixed at shank of screw upper end, and the end face upper edge of nut circumferentially opens up several dovetail caulking grooves, opens up interior hexagonal groove in the middle part of the end face of nut；And the middle part setting T-type protrusion in interior hexagonal groove.The utility model effectively reduces the probability that screw skids in demolishing process, solves the problems, such as to be easy skidding, bad dismounting in screw demolishing process.
Description
Technical field
The utility model relates to orthopedic medical device technical field, especially a kind of Orthopedic medical screw.
Background technique
Orthopaedics is mainly used for recombining bone with screw in the prior art, and auxiliary bones regrow, fixed synthetism
Plate, especially cooperation locking compress bone plate, form firm inner fixed support.Usually such screw can be retained in for a long time
Patient's is internal, after need to take out on these screws after fracture recovering.But during screw takes out, the top of screw cap holds
Easily there is stripped thread phenomenon due to removal equipment abrasion or both screw cap and removal equipment cannot be contacted well.Once occurring this
Situation, cumbersome to the taking-up of shank of screw, device for taking out broken nail tool cannot use, need to use industrial drill bit grind off screw cap and with
Contact steel plate, reuse device for taking out broken nail tool and take out shank of screw, extend the operating time of operation, aggravate operation pollution
Risk, the postoperative probability increasing that infection, refracture occurs, when these are all that orthopaedics removes internal fixation device, what longest was met is asked
Topic.
Utility model content
The purpose of the utility model is to provide a kind of Orthopedic medical screws, solve existing Orthopedic medical screw in demolishing process
It is easy to skid, the technical issues of being not easily taken out.
In order to achieve the above object, the utility model provides the following technical solutions:
A kind of Orthopedic medical screw including shank of screw and is fixed at the nut of shank of screw upper end, the nut
End face upper edge circumferentially opens up several dovetail caulking grooves, opens up interior hexagonal groove in the middle part of the end face of the nut；And described interior six
Middle part setting T-type protrusion in the groove of angle.
In a preferred embodiment, anti-skid particles are set on the slot inner wall of the dovetail caulking groove.
In a preferred embodiment, the angle of the dovetail caulking groove is 45-55 °.
In a preferred embodiment, circumferential in the end face edge of the nut uniformly to open up six dovetail caulking grooves.
In a preferred embodiment, the shank of screw is titanium alloy material.
In a preferred embodiment, the head of the shank of screw is equipped with tapping screw thread.
In a preferred embodiment, the head end of the shank of screw and periphery use chamfered transition.
The Orthopedic medical screw of the utility model is compared with prior art, convex by dovetail caulking groove, interior hexagonal groove, T-type
The setting risen, can be taken out screw by different removal equipments, and for the dovetail caulking groove strip groove vertical relative to side wall
Torque is increased, stripped thread phenomenon is not susceptible to.In addition, anti-skid particles are arranged on dovetail caulking groove inner wall, the utility model it is anti-skidding
Particle effectively increases the anti-skidding degree in dovetail caulking groove, further reduced the probability to skid.T-type in interior hexagonal groove
The setting of protrusion also can effectively solve the problem that the problem of skidding, bad dismounting are easy in screw demolishing process.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the Orthopedic medical bolt structure schematic diagram of the utility model；
Fig. 2 is the nut overlooking structure diagram of the Orthopedic medical screw of the utility model.
Specific embodiment
Below in conjunction with the attached drawing of the utility model, the technical solution of the utility model is clearly and completely described,
Obviously, the described embodiments are only a part of the embodiments of the utility model, instead of all the embodiments.It is practical based on this
Embodiment in novel, every other reality obtained by those of ordinary skill in the art without making creative efforts
Example is applied, is fallen within the protection scope of the utility model.
According to Fig. 1-2, illustrate preferred embodiments of the present invention.
As shown in Figs. 1-2, a kind of Orthopedic medical screw including shank of screw 2 and is fixed at the spiral shell of 2 upper end of shank of screw
Cap 1, the end face upper edge of above-mentioned nut 1 circumferentially open up several dovetail caulking grooves 3, interior six are opened up in the middle part of the end face of above-mentioned nut 1
Angle groove 4；And T-type protrusion 5 is arranged in the middle part in above-mentioned interior hexagonal groove 4.The setting of dovetail caulking groove 3 is relative to traditional side wall
The phenomenon that increasing torque for vertical strip groove, be not susceptible to stripped thread.T-type protrusion 5 is set in interior hexagonal groove 4,
Reduce the probability that interior hexagonal groove 4 is skidded.
Anti-skid particles are set on the slot inner wall of above-mentioned dovetail caulking groove 3, effectively increase the anti-skidding degree in dovetail caulking groove 3.
The angle of preferred above-mentioned dovetail caulking groove 3 is 45-55 °, since the angle of dovetail caulking groove 3 and the size of torque are related, preferably
The angle of dovetail caulking groove 3 is 45 °.The utility model is preferably circumferential in the end face edge of above-mentioned nut 1 uniformly to open up six swallows
Tail caulking groove 3.
Above-mentioned shank of screw 2 is titanium alloy material, nontoxic since titanium alloy material intensity is high, light weight, and is had excellent
Biocompatibility is ideal medical metal material.
For the ease of in use, screw is easy to fixed tendon in marrow road, guaranteeing the healing of tendon in bone surgery, on
The head 201 for stating shank of screw 2 is equipped with tapping screw thread 6.201 end face of head of above-mentioned shank of screw 2 and periphery use chamfered transition,
Such structure setting can more preferably avoid 2 head of shank of screw, 201 sharp edges from cutting to tendon.
Above description is only a specific implementation of the present invention, but the protection scope of the utility model is not limited to
In this, anyone skilled in the art within the technical scope disclosed by the utility model, can readily occur in variation
Or replacement, it should be covered within the scope of the utility model.Therefore, the protection scope of the utility model is answered described with power
Subject to the protection scope that benefit requires.
Claims (7)
1. a kind of Orthopedic medical screw, including shank of screw and it is fixed at the nut of shank of screw upper end, it is characterised in that: institute
The end face upper edge for stating nut circumferentially opens up several dovetail caulking grooves, opens up interior hexagonal groove in the middle part of the end face of the nut；And
Middle part setting T-type protrusion in the interior hexagonal groove.
2. a kind of Orthopedic medical screw according to claim 1, it is characterised in that: set on the slot inner wall of the dovetail caulking groove
Set anti-skid particles.
3. a kind of Orthopedic medical screw according to claim 1, it is characterised in that: the angle of the dovetail caulking groove is 45-
55°。
4. a kind of Orthopedic medical screw according to claim 1, it is characterised in that: circumferential in the end face edge of the nut
Uniformly open up six dovetail caulking grooves.
5. a kind of Orthopedic medical screw according to claim 1, it is characterised in that: the shank of screw is titanium alloy material.
6. a kind of Orthopedic medical screw according to claim 1, it is characterised in that: the head of the shank of screw is equipped with self tapping
Screw thread.
7. a kind of Orthopedic medical screw according to claim 1, it is characterised in that: the head end and circle of the shank of screw
Circumferential surface uses chamfered transition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720996320.6U CN208355547U (en) | 2017-08-10 | 2017-08-10 | A kind of Orthopedic medical screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720996320.6U CN208355547U (en) | 2017-08-10 | 2017-08-10 | A kind of Orthopedic medical screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208355547U true CN208355547U (en) | 2019-01-11 |
Family
ID=64913417
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720996320.6U Expired - Fee Related CN208355547U (en) | 2017-08-10 | 2017-08-10 | A kind of Orthopedic medical screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208355547U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10939944B2 (en) | 2018-04-18 | 2021-03-09 | Glw, Inc. | Removable orthopedic screws |
-
2017
- 2017-08-10 CN CN201720996320.6U patent/CN208355547U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10939944B2 (en) | 2018-04-18 | 2021-03-09 | Glw, Inc. | Removable orthopedic screws |
| US11793559B2 (en) | 2018-04-18 | 2023-10-24 | Glw, Inc. | Removable orthopedic screws |
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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 |
Granted publication date: 20190111 Termination date: 20200810 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |