CN205514863U - Fine motion locking screw - Google Patents
Fine motion locking screw Download PDFInfo
- Publication number
- CN205514863U CN205514863U CN201620149298.7U CN201620149298U CN205514863U CN 205514863 U CN205514863 U CN 205514863U CN 201620149298 U CN201620149298 U CN 201620149298U CN 205514863 U CN205514863 U CN 205514863U
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- CN
- China
- Prior art keywords
- screw
- thread
- swivel nut
- bone
- fine motion
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Abstract
The utility model relates to a fine motion locking screw, include the screw body who makes by the non -biodegradable material, the last swivel nut of making by the degradation material that is fixed with of screw body, screw body by consecutive locking screw thread, connecting rod, screw murices line, move back nail self tapping groove and advance to follow closely the self tapping bank of cells, swivel nut murices line has been seted up on the swivel nut. The utility model discloses a fine motion locking screw, the operation of can pressurizeing in the art, the postoperative swivel nut can be degraded in 1~15 month, and the fine motion can take place for the bone that the degradation back is close to the locking bone plate side to promote its growth under the stimulation of power.
Description
Technical field
This utility model relates to fractures recovery technology field, particularly to a kind of fine motion lock screw.
Background technology
When locking bone fracture plate and lock screw carry out fracture fixation, locking bone fracture plate, lock screw, bone
Strong fixing is formed between folding.And Wolf law shows, the growth stimulating beneficially bone of power.Therefore,
Side away from locking bone fracture plate can be stimulated by power due to the slight bending of screw, bone, is conducive to
The recovery of fracture.And in the side near locking bone fracture plate, owing to interior fixing rigidity is relatively strong, bone is relatively
Feel bad the stimulation of power, be unfavorable for the recovery of fracture.The Chinese patent of CN 202458652U discloses one
Plant dynamic lock screw, including taper thread nail axle and the threaded sleeve that can be inserted into taper thread nail axle.Use
After this dynamic lock screw, the bone of locking bone fracture plate side can be made also to be stimulated by power, promote skeleton circle
The callus of circumferential direction generates.But, due to the deformation of taper thread nail axle, can not in art during Clinical practice
Fracture site is pressurizeed.Additionally, taper thread nail axle is more difficult with being linked and packed of threaded sleeve,
Connection reliability is poor, and in Clinical practice, taper thread nail axle easily ruptures.
Summary of the invention
The purpose of this utility model is the defect overcoming prior art to exist, it is provided that a kind of structure letter
The fine motion lock screw single, connection reliability is strong.
The technical scheme realizing this utility model purpose is: a kind of fine motion lock screw, including by can not
The screw body that degradable material manufactures；The spiral shell manufactured by degradation material it is fixed with on described screw body
Set；Described screw body by the locking screw thread being sequentially connected, connecting rod, screw bone thread, move back nail from
Attack groove and enter to follow closely self tapping groove composition；Swivel nut bone thread is offered on described swivel nut.
Diameter d1 at connecting rod described in technique scheme is little less than or equal to the screw thread at screw bone thread
Footpath d2.
The pitch of swivel nut bone thread described in technique scheme is equal to the screw bone thread on screw body
Pitch.
The Major Diam d5 of swivel nut bone thread described in technique scheme is less than or equal to the spiral shell on screw body
The Major Diam d4 of nail bone thread.
Diameter of thread d3 of swivel nut bone thread described in technique scheme is little equal to the screw thread of screw bone thread
Footpath.
The diameter of thread of swivel nut bone thread described in technique scheme is little more than the screw thread of screw bone thread
Footpath, and described swivel nut is provided with self tapping groove.
Screw bone thread described in technique scheme is cortical bone screw thread.
Using after technique scheme, this utility model has a following positive effect:
Fine motion lock screw of the present utility model, can carry out pressurized operation in art, postoperative swivel nut can 1～
Degrading in 15 months, after degraded, the bone near locking bone fracture plate side can occur fine motion, thus in the thorn of power
Swash its growth of lower promotion.
Accompanying drawing explanation
In order to make content of the present utility model be easier to be clearly understood, below according to specific embodiment
And combine accompanying drawing, this utility model is described in further detail, wherein
Fig. 1 is perspective view of the present utility model；
Fig. 2 is structural representation of the present utility model；
Fig. 3 is the structural representation of embodiment 1 of the present utility model；
Fig. 4 is the other direction structural representation of embodiment 1 of the present utility model；
Fig. 5 is the structural representation of embodiment 2 of the present utility model；
Fig. 6 is the left view of Fig. 5；
Accompanying drawing is numbered: screw body 1, locking screw thread 11, connecting rod 12, screw bone thread 13,
Move back nail self tapping groove 14, enter to follow closely self tapping groove 15, swivel nut 2, swivel nut bone thread 21, self tapping groove 22.
Detailed description of the invention
See that Fig. 1, this utility model include the screw body 1 manufactured by non-degradable material；Screw body
The swivel nut 2 manufactured by degradation material it is fixed with on 1；Screw body 1 is by the locking screw thread being sequentially connected
11, connecting rod 12, screw bone thread 13, move back nail self tapping groove 14 and enter to follow closely self tapping groove 15 and form；Spiral shell
Swivel nut bone thread 21 is offered on set 2.
Diameter d1 at connecting rod 12 is less than or equal to diameter of thread d2 at screw bone thread 13.
The pitch of swivel nut bone thread 21 is equal to the pitch of the screw bone thread 13 on screw body 1.
The Major Diam d5 of swivel nut bone thread 21 is less than or equal to the screw bone thread 13 on screw body 1
Major Diam d4.
Diameter of thread d3 of swivel nut bone thread 21 is equal to the diameter of thread of screw bone thread 13.
The diameter of thread of swivel nut bone thread 21 is more than the diameter of thread of screw bone thread 13, and swivel nut 2
It is provided with self tapping groove 22.
Screw bone thread 13 is cortical bone screw thread.
Operation principle of the present utility model is: uses the fine motion lock screw of the present invention, can carry out in art
Pressurized operation, postoperative swivel nut 2 can be degraded in 1～15 months, near locking bone fracture plate side after degraded
Bone fine motion can occur, thus promote that it grows under the stimulation of power.
(embodiment 1)
See Fig. 1, Fig. 2, Fig. 4, Fig. 5, Fig. 6, the fine motion lock screw of a diameter 5.5*50, institute
Stating screw body 1 is stainless steel material manufacture, and described swivel nut 2 is manufactured by poly-lactic acid material, described spiral shell
Set 2 is fixed on screw body 1 through injection direct forming.Described screw body is by the lock being sequentially connected
Determine screw thread 11, connecting rod 12, move back nail self tapping groove 14, bone thread 13, enter to follow closely self tapping groove 15 and form.
Described bone thread 13 is cortical bone screw thread.Diameter d1 etc. at 1 connecting rod 12 on described screw body
Diameter of thread d2 in bone thread 13 is 4.0, and the Major Diam d4 of described bone thread 13 is 5.0,
Pitch is 1.3.Diameter of thread d3 of described swivel nut 2 is 4.5, and Major Diam d5 is equal to described murices
The Major Diam d4 of stricture of vagina 13, swivel nut 2 outer surface is provided with self tapping groove 22.
(embodiment 2)
Seeing Fig. 3, the fine motion lock screw of a diameter 5.5*50, described screw body 1 is titanium alloy material
Material manufactures, and described swivel nut 2 is poly-lactic acid material manufacture, and described swivel nut 2 is fixed through injection direct forming
On screw body 1.Described screw body by the locking screw thread 11 being sequentially connected, connecting rod 12, move back
Nail self tapping groove 14, bone thread 13, enter to follow closely self tapping groove 15 and form.Described bone thread 13 is cortex murices
Stricture of vagina.On described screw body, the diameter d1 at 1 connecting rod 12 is 3.5, the spiral shell of described bone thread 13
Stricture of vagina big footpath d4 is 5.0, and diameter of thread d2 is 4.0, and pitch is 1.3.The screw thread of described swivel nut 2 is little
Footpath d3 is equal to described bone thread 13 equal to diameter of thread d2 of described bone thread 13, Major Diam d5
Major Diam d4, swivel nut 2 outer surface is without self tapping groove.
Particular embodiments described above, to the purpose of this utility model, technical scheme and beneficial effect
Further described, be it should be understood that the foregoing is only of the present utility model specifically
Embodiment, is not limited to this utility model, all spirit of the present utility model and principle it
In, any modification, equivalent substitution and improvement etc. done, should be included in protection of the present utility model
Within the scope of.
Claims (7)
1. a fine motion lock screw, including the screw body (1) manufactured by non-degradable material；Its
It is characterised by: on described screw body (1), be fixed with the swivel nut (2) manufactured by degradation material；Institute
State screw body (1) by the locking screw thread (11) being sequentially connected, connecting rod (12), screw bone thread
(13), move back nail self tapping groove (14) and enter to follow closely self tapping groove (15) composition；Described swivel nut is opened on (2)
It is provided with swivel nut bone thread (21).
Fine motion lock screw the most according to claim 1, it is characterised in that: described connecting rod (12)
The diameter d1 at place is less than or equal to diameter of thread d2 at screw bone thread (13) place.
Fine motion lock screw the most according to claim 2, it is characterised in that: described swivel nut murices
The pitch of stricture of vagina (21) is equal to the pitch of the screw bone thread (13) on screw body (1).
Fine motion lock screw the most according to claim 3, it is characterised in that: described swivel nut murices
The Major Diam d5 of stricture of vagina (21) is less than or equal to the screw bone thread (13) on screw body (1)
Major Diam d4.
Fine motion lock screw the most according to claim 4, it is characterised in that: described swivel nut murices
Diameter of thread d3 of stricture of vagina (21) is equal to the diameter of thread of screw bone thread (13).
Fine motion lock screw the most according to claim 4, it is characterised in that: described swivel nut murices
The diameter of thread of stricture of vagina (21) is more than the diameter of thread of screw bone thread (13), and described swivel nut (2)
It is provided with self tapping groove (22).
7. according to the fine motion lock screw described in claim 5 or 6, it is characterised in that: described screw
Bone thread (13) is cortical bone screw thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620149298.7U CN205514863U (en) | 2016-02-26 | 2016-02-26 | Fine motion locking screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620149298.7U CN205514863U (en) | 2016-02-26 | 2016-02-26 | Fine motion locking screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205514863U true CN205514863U (en) | 2016-08-31 |
Family
ID=56779937
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620149298.7U Active CN205514863U (en) | 2016-02-26 | 2016-02-26 | Fine motion locking screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205514863U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105596076A (en) * | 2016-02-26 | 2016-05-25 | 创辉医疗器械江苏有限公司 | Micro-motion locking screw |
| CN109091218A (en) * | 2018-09-05 | 2018-12-28 | 陕西创信金属科技有限公司 | A kind of medical titanium alloy fixing screws with internal screw thread head |
-
2016
- 2016-02-26 CN CN201620149298.7U patent/CN205514863U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105596076A (en) * | 2016-02-26 | 2016-05-25 | 创辉医疗器械江苏有限公司 | Micro-motion locking screw |
| CN109091218A (en) * | 2018-09-05 | 2018-12-28 | 陕西创信金属科技有限公司 | A kind of medical titanium alloy fixing screws with internal screw thread head |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |