CN105213017A - Lock screw that multi-angle is adjustable - Google Patents
Lock screw that multi-angle is adjustable Download PDFInfo
- Publication number
- CN105213017A CN105213017A CN201510716808.4A CN201510716808A CN105213017A CN 105213017 A CN105213017 A CN 105213017A CN 201510716808 A CN201510716808 A CN 201510716808A CN 105213017 A CN105213017 A CN 105213017A
- Authority
- CN
- China
- Prior art keywords
- screw
- screw thread
- thread
- angle
- curve
- 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
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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
- A61B17/8605—Heads, i.e. proximal ends projecting from bone
-
- 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
- A61B17/8625—Shanks, i.e. parts contacting bone tissue
Abstract
The present invention relates to the adjustable lock screw of a kind of multi-angle, be integrally made up of the head of screw connected successively, connecting portion and shank of screw; Described shank of screw has bone thread; Described head of screw have rotation direction contrary and cross one another first screw thread and the second screw thread; Line between each crest that described first screw thread and the second screw thread are formed forms the first curve, line between at the bottom of each tooth that first screw thread and the second screw thread are formed forms the second curve, and the angular bisector of each tooth form of the first screw thread and the second screw thread is parallel to each other.Lock screw that multi-angle of the present invention is adjustable directly can realize multi-angle locking on common lockplate, without the need to increasing extra groove in the screwed hole of plate, do not reduce the loaded area of plate, do not affect the bearing capacity of plate, and the angular bisector of the thread of the locking screw thread of the adjustable lock screw of multi-angle of the present invention is parallel to each other, be convenient to processing.
Description
Technical field
The present invention relates to fractures technical field, particularly the adjustable lock screw of a kind of multi-angle.
Background technology
Locking bone fracture plate eliminates the compressing to periosteum, and available protecting blood fortune, achieves immense success in clinical practice.But due to the complexity of fracture, what Clinical practice wished to carry out multi-angle often plants nail, particularly when carrying out that metaphysis is fixed, foot is fixed.CN101778604B discloses a kind of Universal locking fracture bone plate, and locking screw thread, for increase some grooves in plain taper locking screw thread hole, is become the file be separated from each other by concrete technical scheme, and coordinates the adjustable lock screw of multi-angle to realize the locking of multi-angle.CN103961173A discloses a kind of bone screw, and this bone screw coordinates the universal lock plate in CN101778604B to use, and realizes the locking of multi-angle.The angular bisector of the thread of the locking screw thread of this bone screw intersects at a point, and this point is the center of circle of crest place circle.The locking screw thread processing difficulties of blade plate female thread of the prior art and lock screw.And the groove increased decreases the effective bearing area of blade plate, makes its bearing capacity reduce, increase and resolve plate risk.
Summary of the invention
The object of the invention is the defect overcoming prior art existence, provide a kind of and do not reduce the loaded area of plate without the need to increasing extra groove in the screwed hole of plate, do not affect the adjustable lock screw of multi-angle of the bearing capacity of plate.
The technical scheme realizing the object of the invention is: lock screw that a kind of multi-angle is adjustable, is integrally made up of the head of screw connected successively, connecting portion and shank of screw; Described shank of screw has bone thread; Described head of screw have rotation direction contrary and cross one another first screw thread and the second screw thread; Line between each crest that described first screw thread and the second screw thread are formed forms the first curve, line between at the bottom of each tooth that first screw thread and the second screw thread are formed forms the second curve, and the angular bisector of each tooth form of the first screw thread and the second screw thread is parallel to each other.
First curve described in technique scheme and the second curve are circular arc line.
Described in technique scheme, the center of circle of circular arc line is positioned on the axis of screw.
Described in technique scheme, the thread form angle a of the first screw thread and the second screw thread is 25 ~ 75 °.
Each angular bisector described in technique scheme is all perpendicular to the axis of screw.
Described in technique scheme, the thread form angle a of the first screw thread and the second screw thread is 55 °.
First screw thread described in technique scheme and the second screw thread are double thread.
After adopting technique scheme, the present invention has following positive effect:
(1) the adjustable lock screw of multi-angle of the present invention directly can realize multi-angle locking on common lockplate, without the need to increasing extra groove in the screwed hole of plate, do not reduce the loaded area of plate, do not affect the bearing capacity of plate, and the angular bisector of the thread of the locking screw thread of the adjustable lock screw of multi-angle of the present invention is parallel to each other, be convenient to processing.
Accompanying drawing explanation
In order to make content of the present invention more easily be clearly understood, below according to specific embodiment also by reference to the accompanying drawings, the present invention is further detailed explanation, wherein
Fig. 1 is surface structure schematic diagram of the present invention;
Fig. 2 is structural representation of the present invention;
Fig. 3 is the enlarged diagram of the head of screw in Fig. 1;
Attached number in the figure is: head of screw 1, first screw thread 11, second screw thread 12, first curve 13, second curve 14, angular bisector 15, axis 16, connecting portion 2, bone thread 3.
Detailed description of the invention
(embodiment 1)
See Fig. 1, Fig. 2 and Fig. 3, the present invention is integrally made up of the head of screw 1 connected successively, connecting portion 2 and shank of screw; Shank of screw has bone thread 3; Head of screw 1 have contrary and cross one another first screw thread 11 and the second screw thread 12 of rotation direction; Line between each crest that first screw thread 11 and the second screw thread 12 are formed forms the first curve 13, the angular bisector 15 that line between at the bottom of each tooth that first screw thread 11 and the second screw thread 12 are formed forms each tooth form of the second curve 14, first screw thread 11 and the second screw thread 12 is parallel to each other.
First curve 13 and the second curve 14 are circular arc line.
The center of circle of circular arc line is positioned on the axis 16 of screw.
The thread form angle a of the first screw thread 11 and the second screw thread 12 is 25 °.
Each angular bisector 15 is all perpendicular to the axis 16 of screw.
First screw thread 11 and the second screw thread 12 are double thread.
(embodiment 2)
The present invention is integrally made up of the head of screw 1 connected successively, connecting portion 2 and shank of screw; Shank of screw has bone thread 3; Head of screw 1 have contrary and cross one another first screw thread 11 and the second screw thread 12 of rotation direction; Line between each crest that first screw thread 11 and the second screw thread 12 are formed forms the first curve 13, the angular bisector 15 that line between at the bottom of each tooth that first screw thread 11 and the second screw thread 12 are formed forms each tooth form of the second curve 14, first screw thread 11 and the second screw thread 12 is parallel to each other.
First curve 13 and the second curve 14 are circular arc line.
The center of circle of circular arc line is positioned on the axis 16 of screw.
The thread form angle a of the first screw thread 11 and the second screw thread 12 is 75 °.
Each angular bisector 15 is all perpendicular to the axis 16 of screw.
First screw thread 11 and the second screw thread 12 are double thread.
(embodiment 3)
The present invention is integrally made up of the head of screw 1 connected successively, connecting portion 2 and shank of screw; Shank of screw has bone thread 3; Head of screw 1 have contrary and cross one another first screw thread 11 and the second screw thread 12 of rotation direction; Line between each crest that first screw thread 11 and the second screw thread 12 are formed forms the first curve 13, the angular bisector 15 that line between at the bottom of each tooth that first screw thread 11 and the second screw thread 12 are formed forms each tooth form of the second curve 14, first screw thread 11 and the second screw thread 12 is parallel to each other.
First curve 13 and the second curve 14 are circular arc line.
The center of circle of circular arc line is positioned on the axis 16 of screw.
The thread form angle α formed between first screw thread 11 and the second screw thread 12 is 55 °.
Each angular bisector 15 is all perpendicular to the axis 16 of screw.
First screw thread 11 and the second screw thread 12 are double thread.
Above-described specific embodiment; object of the present invention, technical scheme and beneficial effect are further described; be understood that; the foregoing is only specific embodiments of the invention; be not limited to the present invention; within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (7)
1. the adjustable lock screw of multi-angle, is made up of the head of screw connected successively (1), connecting portion (2) and shank of screw one; Described shank of screw has bone thread (3); It is characterized in that: described head of screw (1) has rotation direction contrary and cross one another first screw thread (11) and the second screw thread (12); Line between each crest that described first screw thread (11) and the second screw thread (12) are formed forms the first curve (13), line between at the bottom of each tooth that first screw thread (11) and the second screw thread (12) are formed forms the second curve (14), and the angular bisector (15) of the tooth form of the first screw thread (11) and the second screw thread (12) is parallel to each other.
2. the adjustable lock screw of multi-angle according to claim 1, is characterized in that: described first curve (13) and the second curve (14) are circular arc line.
3. the adjustable lock screw of multi-angle according to claim 2, is characterized in that: the center of circle of described circular arc line is positioned on the axis of screw (16).
4. the adjustable lock screw of multi-angle according to claim 3, is characterized in that: the thread form angle a of described first screw thread (11) and the second screw thread (12) is 25 ~ 75 °.
5. the adjustable lock screw of multi-angle according to claim 4, is characterized in that: described each angular bisector (15,16,17,18) is all perpendicular to the axis (19) of screw.
6. the adjustable lock screw of multi-angle according to claim 5, is characterized in that: the thread form angle a of described first screw thread (11) and the second screw thread (12) is 55 °.
7. the adjustable lock screw of multi-angle according to claim 6, is characterized in that: described first screw thread (11) and the second screw thread (12) are double thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510716808.4A CN105213017A (en) | 2015-10-29 | 2015-10-29 | Lock screw that multi-angle is adjustable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510716808.4A CN105213017A (en) | 2015-10-29 | 2015-10-29 | Lock screw that multi-angle is adjustable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105213017A true CN105213017A (en) | 2016-01-06 |
Family
ID=54982552
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510716808.4A Pending CN105213017A (en) | 2015-10-29 | 2015-10-29 | Lock screw that multi-angle is adjustable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105213017A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111529034A (en) * | 2020-05-20 | 2020-08-14 | 重庆市中医院 | Internal fixing device for patellar lower-pole fracture and screw fixing method |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4343117A1 (en) * | 1993-12-17 | 1995-06-22 | Wolter Dietmar | Bone fixation system for Osteosynthesis |
| EP1138266A1 (en) * | 2000-03-24 | 2001-10-04 | Xavier Renard | System for maintaining two bone portions relative to each other |
| DE102006000948A1 (en) * | 2005-04-11 | 2006-10-19 | Aap Implantate Ag | Bone plate, has thread fixing head or neck of screw and including longitudinal axis that extends within guiding surface and cuts plane at angle that is different from ninety degrees |
| CN101778604A (en) * | 2007-08-13 | 2010-07-14 | 新特斯有限责任公司 | Highly-versatile variable-angle bone plate system |
| WO2013059090A1 (en) * | 2011-10-17 | 2013-04-25 | Biomet Trauma, LLC | Variable locking bone plating system |
| US20130165981A1 (en) * | 2009-12-22 | 2013-06-27 | Merete Medical Gmbh | Bone Plate System for Osteosynthesis |
| WO2014160166A2 (en) * | 2013-03-14 | 2014-10-02 | Amei Technologies, Inc. | Variable angle screws, plates and systems |
| KR20140120112A (en) * | 2013-04-02 | 2014-10-13 | 주식회사 제일메디칼코퍼레이션 | Locking angle adjustable bone plate system |
| CN104739495A (en) * | 2015-03-12 | 2015-07-01 | 创辉医疗器械江苏有限公司 | Bone fracture plate for fixing in all directions |
| CN205144703U (en) * | 2015-10-29 | 2016-04-13 | 创辉医疗器械江苏有限公司 | Adjustable locking screw of multi -angle |
-
2015
- 2015-10-29 CN CN201510716808.4A patent/CN105213017A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4343117A1 (en) * | 1993-12-17 | 1995-06-22 | Wolter Dietmar | Bone fixation system for Osteosynthesis |
| EP1138266A1 (en) * | 2000-03-24 | 2001-10-04 | Xavier Renard | System for maintaining two bone portions relative to each other |
| DE102006000948A1 (en) * | 2005-04-11 | 2006-10-19 | Aap Implantate Ag | Bone plate, has thread fixing head or neck of screw and including longitudinal axis that extends within guiding surface and cuts plane at angle that is different from ninety degrees |
| CN101778604A (en) * | 2007-08-13 | 2010-07-14 | 新特斯有限责任公司 | Highly-versatile variable-angle bone plate system |
| US20130165981A1 (en) * | 2009-12-22 | 2013-06-27 | Merete Medical Gmbh | Bone Plate System for Osteosynthesis |
| WO2013059090A1 (en) * | 2011-10-17 | 2013-04-25 | Biomet Trauma, LLC | Variable locking bone plating system |
| WO2014160166A2 (en) * | 2013-03-14 | 2014-10-02 | Amei Technologies, Inc. | Variable angle screws, plates and systems |
| KR20140120112A (en) * | 2013-04-02 | 2014-10-13 | 주식회사 제일메디칼코퍼레이션 | Locking angle adjustable bone plate system |
| CN104739495A (en) * | 2015-03-12 | 2015-07-01 | 创辉医疗器械江苏有限公司 | Bone fracture plate for fixing in all directions |
| CN205144703U (en) * | 2015-10-29 | 2016-04-13 | 创辉医疗器械江苏有限公司 | Adjustable locking screw of multi -angle |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111529034A (en) * | 2020-05-20 | 2020-08-14 | 重庆市中医院 | Internal fixing device for patellar lower-pole fracture and screw fixing method |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160106 |
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| WD01 | Invention patent application deemed withdrawn after publication |