CN106264698A - A kind of anti-bone screw of back-outing - Google Patents
A kind of anti-bone screw of back-outing Download PDFInfo
- Publication number
- CN106264698A CN106264698A CN201610711784.8A CN201610711784A CN106264698A CN 106264698 A CN106264698 A CN 106264698A CN 201610711784 A CN201610711784 A CN 201610711784A CN 106264698 A CN106264698 A CN 106264698A
- Authority
- CN
- China
- Prior art keywords
- screw
- screw cap
- counterbore
- outing
- round platform
- 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.)
- Pending
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/84—Fasteners therefor or fasteners being internal fixation devices
- A61B17/86—Pins or screws or threaded wires; nuts therefor
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/84—Fasteners therefor or fasteners being internal fixation devices
- A61B17/86—Pins or screws or threaded wires; nuts therefor
- A61B17/8665—Nuts
Abstract
The invention discloses a kind of anti-bone screw of back-outing, including screw cap and shank of screw.Wherein, screw cap is made up of upper screw cap and lower screw cap；The outer round surface non-threaded of upper screw cap；The outer round surface of lower screw cap has screw thread.Upper screw cap is made up of upper round platform and lower round platform, and the bottom surface of upper round platform and the upper bottom surface of lower round platform are same shared bottom surface；The bus of upper round platform is acute angle with the angle of shared bottom surface；The bus of lower round platform and the angle of shared bottom surface are acute angle.Wherein, screw cap outer face central authorities are provided with three layers of counterbore；Shank of screw by the escape being connected with screw cap, from escape extend be threaded into district and head of screw forms.Upper screw cap non-threaded design in the screw cap of the present invention, can prevent screw and steel plate from occurring being threaded through head when tightening, and improves simultaneously and implants efficiency, reduces to implant and hinders；Head of screw is provided with V-arrangement arc groove, and ensures that locking is strong, drops, beneficially the recovery after synthetism after preventing screw placement.
Description
Technical field
The present invention relates to orthopedic medical device field, particularly relate to a kind of bone screw.
Background technology
In bone surgery, generally require and utilize blade plate and bone screw to implement to fix, the most enough to fracture site
Ankle position.
The screw cap of existing ankle series of bolts all has screw thread, easily occurs synthetism when being fixed fracture site
" being threaded through head " phenomenon occurs during screw-driving, so not only reduces the reliability of fracture fixation, when extending the healing of fracture
Between, the success rate of operation is relatively low.
In order to solve the problems referred to above, bone screw was once improved by designer, but structure design is increasingly complex.At bone
Section's operation is applied the bone screw that the design of these structures is complex, is on the one hand not easy to install, is on the other hand also not easy
Dismounting, considerably increases operation easier.
Summary of the invention
The technical problem to be solved in the present invention be to provide a kind of simple in construction, reasonable in design, easy and simple to handle anti-back-out connect
Bone screw.
Anti-bone screw of back-outing of the present invention, including screw cap and shank of screw, the two is integrated makes；Described spiral shell
The head of a nail is made up of upper screw cap and lower screw cap, and the two is integrated makes；Upper screw cap and the height of lower screw cap
Ratio is 1:3；The outer round surface non-threaded of described upper screw cap；The outer round surface of described lower screw cap has screw thread；
Described upper screw cap is made up of upper round platform and lower round platform, and the two is integrated makes；The bottom surface of described upper round platform
It is same shared bottom surface with the upper bottom surface of lower round platform；The bus of upper round platform is acute angle with the angle of shared bottom surface；The mother of lower round platform
Line is acute angle with the angle of shared bottom surface；
Described screw cap outer face central authorities are provided with three layers of counterbore；Described counterbore by screw cap outer end towards shank of screw direction
It is arranged in order；
Described shank of screw is threaded into district and screw by the escape being connected with screw cap, from what escape extended
Head composition.
The anti-bone screw of back-outing of one of the present invention, wherein, the upper round platform of described upper screw cap and lower round platform
Height ratio is 1:1；The bus of upper round platform is 35 ° with the angle of shared bottom surface；The bus of lower round platform and the angle of shared bottom surface
It it is 80 °.
The anti-bone screw of back-outing of one of the present invention, wherein, described counterbore is along screw cap outer end towards shank of screw
Direction is followed successively by interior hexagonal Flos Mume counterbore, cylinder counterbore and circular cone counterbore.
One of the present invention anti-back-out bone screw, wherein, described interior hexagonal Flos Mume counterbore, cylinder counterbore and circular cone
The height ratio of counterbore is 3:1:1；The inscribed circle diameter of interior hexagonal Flos Mume counterbore is more than the basal diameter of cylinder counterbore；Cylinder sinks
The basal diameter in hole is equal to the basal diameter of circular cone counterbore.
The anti-bone screw of back-outing of one of the present invention, wherein, the screw thread of described lower screw cap is single thread, its
Radius of fillet tapers into shank of screw direction.
The anti-bone screw of back-outing of one of the present invention, wherein, the length of described escape is equal in screw precession district
2 times of lead.
The anti-bone screw of back-outing of one of the present invention, wherein, the screw thread in described screw precession district is single thread.
The anti-bone screw of back-outing of one of the present invention, wherein, described head of screw is cone；The edge, surface of head of screw
Screw axis direction offers V-type arc groove.
The anti-bone screw of back-outing of one of the present invention, wherein, the opening of described V-type arc groove is towards being threaded into
District；The depth capacity of V-type arc groove is 1.5 times of the height of thread in screw precession district.
The anti-bone screw of back-outing of one of the present invention, wherein, the tip of described head of screw is circular arc point.
The technique effect of the anti-bone screw of back-outing that the present invention provides includes:
(1) design of the upper screw cap non-threaded in screw cap, can prevent screw and steel plate from occurring being threaded through head when tightening, with
Shi Tigao implants efficiency, reduces to implant and hinders；
(2) head of screw is provided with V-arrangement arc groove, and ensures there is locking effect effectively, drops, favorably after preventing screw placement
Recovery after synthetism.
The anti-bone screw of back-outing of the present invention is described further by explanation and specific embodiment below in conjunction with the accompanying drawings.
Accompanying drawing explanation
Fig. 1 be the present invention prevent back-outing front, bone screw side to schematic perspective view；
Fig. 2 is that the present invention prevents back-outing the top view of screw cap in bone screw；
Fig. 3 is that the present invention prevents back-outing the front view of bone screw；
Fig. 4 is that the present invention prevents back-outing the Longitudinal cross section schematic of bone screw；
Fig. 5 is the details enlarged drawing at " A " place in Fig. 3；
Fig. 6 is that the present invention prevents back-outing the schematic perspective view in direction, bone screw rear flank；
Fig. 7 is the embodiment schematic diagram of common bone screw；
Fig. 8 is that the present invention prevents back-outing the embodiment schematic diagram of bone screw.
Detailed description of the invention
Shown in Fig. 1, Fig. 3 and Fig. 5, the anti-bone screw of back-outing of the present invention includes screw cap 1 and shank of screw 2, and the two is
It is made into integration；Screw cap 1 is made up of upper screw cap 11 and lower screw cap 12, and the two is integrated makes；Upper screw cap 11
It is 1:3 with the height ratio of lower screw cap 12；The outer round surface non-threaded of upper screw cap 11；The cylindrical of lower screw cap 12
There is screw thread on surface.
Shown in Fig. 3 and Fig. 5, upper screw cap 11 is made up of upper round platform 111 and lower round platform 112, and the two is integrated system
Become；The height ratio of upper round platform 111 and lower round platform 112 is 1:1；The bottom surface of upper round platform 111 and the upper bottom surface of lower round platform 112 are
Same shared bottom surface 115；The bus 116 of upper round platform 111 is 35 ° with the angle of shared bottom surface 115；The bus 117 of lower round platform 112
It it is 80 ° with the angle of shared bottom surface 115.
Shown in Fig. 1, Fig. 2 and Fig. 4, screw cap 1 outer face central authorities are provided with three layers of counterbore；Counterbore is by screw cap 1 outer end
It is arranged in order towards shank of screw 2 direction, is followed successively by interior hexagonal Flos Mume counterbore 13, cylinder counterbore 14 and circular cone counterbore 15, its height
Ratio is 3:1:1；The inscribed circle diameter of interior hexagonal Flos Mume counterbore 13 is more than the basal diameter of cylinder counterbore 14；Cylinder counterbore 14
Basal diameter is equal to the basal diameter of circular cone counterbore.
Shown in Fig. 1, Fig. 3, the screw thread of lower screw cap 12 is single thread, its radius of fillet to shank of screw direction by
Gradual change is little；Shank of screw 2 is threaded into district 22 and spiral shell by the escape 21 being connected with screw cap 1, from what escape 21 extended
Ailhead 23 forms；The length of escape 21 is equal in screw precession district 22 times of lead；The screw thread in screw precession district 2 is single
Line screw thread.
Shown in Fig. 3, Fig. 6, head of screw 23 is cone；The surface of head of screw 23 offers V along screw axis direction
Type arc groove 231；The opening of V-type arc groove 231 is towards being threaded into district 22；The depth capacity of V-type arc groove 231 is screw
1.5 times of the height of thread in precession district 2；The tip of head of screw 23 is circular arc point.
Fig. 8 show the present invention to be prevented back-outing the implementation result schematic diagram of bone screw.
Shown in Fig. 8, the present invention prevent the back-outing specific implementation method of bone screw is: blade plate 6 is covered in knochenbruch 3
Above fracture site 4, anti-for present invention bone screw 8 of back-outing is screwed into blade plate 6, it is ensured that tighten.
Fig. 7 show the implementation result schematic diagram of common bone screw, and wherein labelling 7 is common bone screw.
Comparison diagram 7 and Fig. 8, it will thus be seen that
After common bone screw 7 is screwed into blade plate 6, screw cap has fully entered blade plate, easily occurs " being threaded through head " existing
As, cause the reliability of fracture fixation to reduce, healing time extends, the success rate of operation reduces.
After anti-bone screw 8 of back-outing is screwed into blade plate 6, upper screw cap is not because having screw thread, so cannot be introduced into synthetism
Plate, because without there is " being threaded through head " phenomenon, the reliability of fracture fixation is high, healing is fast, and the success rate of operation is greatly improved.
Embodiment described above is only to be described the preferred embodiment of the present invention, the not model to the present invention
Enclose and be defined, on the premise of designing spirit without departing from the present invention, the those of ordinary skill in the art technical side to the present invention
Various deformation that case is made and improvement, all should fall in the protection domain that claims of the present invention determines.
Claims (10)
1. an anti-bone screw of back-outing, it is characterised in that: including screw cap (1) and shank of screw (2), the two is integrated makes；
Described screw cap (1) is made up of upper screw cap (11) and lower screw cap (12), and the two is integrated makes；Upper screw cap
And the height ratio of lower screw cap (12) is 1:3 (11)；The outer round surface non-threaded of described upper screw cap (11)；Described
The outer round surface of lower screw cap (12) have screw thread；
Described upper screw cap (11) is made up of upper round platform (111) and lower round platform (112), and the two is integrated makes；Described upper circle
The bottom surface of platform (111) and the upper bottom surface of lower round platform (112) are same shared bottom surface (115)；The bus of upper round platform (111)
(116) angle with shared bottom surface (115) is acute angle；The bus (117) of lower round platform (112) and the angle of shared bottom surface (115)
For acute angle；
Described screw cap (1) outer face central authorities are provided with three layers of counterbore；Described counterbore by screw cap (1) outer end towards shank of screw
(2) direction is arranged in order；
Described shank of screw (2) is by the escape (21) being connected with screw cap (1), the screw thread rotation extended from escape (21)
Time zone (22) and head of screw (23) composition.
The anti-bone screw of back-outing of one the most according to claim 1, it is characterised in that: described upper round platform (111) and lower circle
The height ratio of platform (112) is 1:1；The bus (116) of upper round platform (111) and the angle of shared bottom surface (115) are 35 °；Lower circle
The bus (117) of platform (112) and the angle of shared bottom surface (115) are 80 °.
The anti-bone screw of back-outing of one the most according to claim 2, it is characterised in that: described counterbore is along screw cap (1) outward
End face is followed successively by interior hexagonal Flos Mume counterbore (13), cylinder counterbore (14) and circular cone counterbore (15) to the direction of shank of screw (2).
The anti-bone screw of back-outing of one the most according to claim 3, it is characterised in that: described interior hexagonal Flos Mume counterbore
(13), the height ratio of cylinder counterbore (14) and circular cone counterbore (15) is 3:1:1；The inscribed circle of interior hexagonal Flos Mume counterbore (13) is straight
Footpath is more than the basal diameter of cylinder counterbore (14)；The basal diameter of cylinder counterbore (14) is equal to the basal diameter of circular cone counterbore.
The anti-bone screw of back-outing of one the most according to claim 4, it is characterised in that: the spiral shell of described lower screw cap (12)
Stricture of vagina is single thread, and its radius of fillet tapers into shank of screw direction.
The anti-bone screw of back-outing of one the most according to claim 5, it is characterised in that: the length etc. of described escape (21)
In screw precession district (2) 2 times of lead.
The anti-bone screw of back-outing of one the most according to claim 6, it is characterised in that: the spiral shell of described screw precession district (2)
Stricture of vagina is single thread.
The anti-bone screw of back-outing of one the most according to claim 7, it is characterised in that: described head of screw (23) is circular cone
Shape；The surface of head of screw (23) offers V-type arc groove (231) along screw axis direction.
The anti-bone screw of back-outing of one the most according to claim 8, it is characterised in that: opening of described V-type arc groove (231)
Mouth end is towards being threaded into district (22)；The depth capacity of V-type arc groove (231) is the 1.5 of the height of thread in screw precession district (2)
Times.
The anti-bone screw of back-outing of one the most according to claim 9, it is characterised in that: the tip of described head of screw (23)
For circular arc point.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610711784.8A CN106264698A (en) | 2016-08-24 | 2016-08-24 | A kind of anti-bone screw of back-outing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610711784.8A CN106264698A (en) | 2016-08-24 | 2016-08-24 | A kind of anti-bone screw of back-outing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106264698A true CN106264698A (en) | 2017-01-04 |
Family
ID=57614975
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610711784.8A Pending CN106264698A (en) | 2016-08-24 | 2016-08-24 | A kind of anti-bone screw of back-outing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106264698A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200951107Y (en) * | 2006-06-16 | 2007-09-26 | 创生医疗器械(江苏)有限公司 | Medical use bone setting screw |
| CN203328792U (en) * | 2013-07-22 | 2013-12-11 | 杨梓兰 | Novel medical bone screw |
| CN204033469U (en) * | 2014-08-26 | 2014-12-24 | 无锡市闻泰百得医疗器械有限公司 | A kind of multistage lead bone screw |
| CN204379419U (en) * | 2014-12-25 | 2015-06-10 | 江苏博朗森思医疗器械有限公司 | Medical bone screw |
| CN104902833A (en) * | 2012-10-10 | 2015-09-09 | 费瑟特-链接公司 | Anti-over tightening bone screw fixing arrangement |
| CN206424138U (en) * | 2016-08-24 | 2017-08-22 | 苏州欣荣博尔特医疗器械有限公司 | One kind is anti-to back-out bone screw |
-
2016
- 2016-08-24 CN CN201610711784.8A patent/CN106264698A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200951107Y (en) * | 2006-06-16 | 2007-09-26 | 创生医疗器械(江苏)有限公司 | Medical use bone setting screw |
| CN104902833A (en) * | 2012-10-10 | 2015-09-09 | 费瑟特-链接公司 | Anti-over tightening bone screw fixing arrangement |
| CN203328792U (en) * | 2013-07-22 | 2013-12-11 | 杨梓兰 | Novel medical bone screw |
| CN204033469U (en) * | 2014-08-26 | 2014-12-24 | 无锡市闻泰百得医疗器械有限公司 | A kind of multistage lead bone screw |
| CN204379419U (en) * | 2014-12-25 | 2015-06-10 | 江苏博朗森思医疗器械有限公司 | Medical bone screw |
| CN206424138U (en) * | 2016-08-24 | 2017-08-22 | 苏州欣荣博尔特医疗器械有限公司 | One kind is anti-to back-out bone screw |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8518090B2 (en) | Fastener with serrated thread for attachment to a bone plate at a selectable angle | |
| CN103550003B (en) | Implantation body's device of easy taking-up and the instrument of back-out thereof | |
| JPH05228162A (en) | Fixing member | |
| WO2016058243A1 (en) | Steel plate screw system with universal locking function | |
| CN204092147U (en) | A kind of patella fixture | |
| CN208123221U (en) | It is a kind of to determine torque anti-loosening locking bolt group | |
| CN203516393U (en) | Screw | |
| CN104224291A (en) | Novel combined-type calcaneal-fracture internal fixation steel plate | |
| CN206424138U (en) | One kind is anti-to back-out bone screw | |
| CN106264698A (en) | A kind of anti-bone screw of back-outing | |
| CN107280756A (en) | A kind of medical cranial Bone nail structure | |
| CN203524761U (en) | Expansion type metal bone-setting locking screw | |
| CN203915048U (en) | Novel combination type fracture of calcaneus internal fixation steel plate | |
| CN204133596U (en) | A kind of synthetism Wicresoft locking device | |
| CN204765888U (en) | Metal meets bone screw | |
| CN204971551U (en) | Hollow compression screw in hole is let out to double helix | |
| CN205019148U (en) | Bone screw of screw in fast | |
| CN203988327U (en) | A kind ofly be with directed bone cement side opening negative angle spinal column hollow nail | |
| CN210009110U (en) | Metal spicule with drill function | |
| CN206526094U (en) | A kind of special nail of orthopaedics | |
| US20150104755A1 (en) | Winged implant | |
| CN210990653U (en) | Medical pressure relief screw for orthopedics | |
| CN207928368U (en) | Pedicle screw fixation operation operation lock screw and mating wrench set | |
| CN210228301U (en) | Flap screw | |
| CN203873858U (en) | Internal fixing device for bones |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170104 |