CN106264704A - Conical points sharp tackle head extractor for thread-stripping screws with press fastening device - Google Patents
Conical points sharp tackle head extractor for thread-stripping screws with press fastening device Download PDFInfo
- Publication number
- CN106264704A CN106264704A CN201610828457.0A CN201610828457A CN106264704A CN 106264704 A CN106264704 A CN 106264704A CN 201610828457 A CN201610828457 A CN 201610828457A CN 106264704 A CN106264704 A CN 106264704A
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- China
- Prior art keywords
- shaped
- thread
- groove
- conical points
- fastening device
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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.)
- Granted
Links
- 210000000988 bone and bone Anatomy 0.000 abstract description 2
- 238000000605 extraction Methods 0.000 abstract description 2
- 239000002184 metal Substances 0.000 abstract description 2
- 230000006378 damage Effects 0.000 abstract 1
- 230000000399 orthopedic effect Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 2
- 208000031481 Pathologic Constriction Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001727 in vivo Methods 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 210000001215 vagina Anatomy 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- 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 or setting implements
- A61B17/88—Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
- A61B17/92—Impactors or extractors, e.g. for removing intramedullary devices
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- 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 or setting implements
- A61B17/88—Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
- A61B17/92—Impactors or extractors, e.g. for removing intramedullary devices
- A61B2017/922—Devices for impaction, impact element
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Surgery (AREA)
- Biomedical Technology (AREA)
- Engineering & Computer Science (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
Abstract
The present invention relates to a kind of conical points sharp tackle head extractor for thread-stripping screws with press fastening device, belong to orthopedic medical device technical field.It includes T-shaped handle and card pressure folder；Described T-shaped handle front end connects conical points sharp tackle head, and T-shaped handle is additionally provided with spherical nut and hex nut；Described card pressure folder upper end is provided with U-shaped draw-in groove, and lower end is provided with U-shaped deck, is connected by connecting rod between U-shaped draw-in groove and U-shaped deck；Described U-shaped draw-in groove can block spherical nut, and U-shaped deck blocks below slipped screws groove.Present configuration is simple, have that success rate is high, be not easy stripped thread, easy and simple to handle, without bone destruction, without advantages such as metal fillings residuals, maximum feature is that press fastening device need not just keep by external force conical points sharp tackle head to be tightly stuck in stripped thread groove, is not easy skidding, extraction efficiency height when taking out.
Description
Technical field
The present invention relates to a kind of conical points sharp tackle head extractor for thread-stripping screws with press fastening device, belong to orthopaedic medical treatment device
Tool technical field.
Background technology
Blade plate and screw are fixed fracture and are had become as current conventional methods of internal fixation, and at present, interior hexagon screw is
The most frequently used screw of orthopaedics.Need after union of fracture to take out internal blade plate screw.More greatly should because screw bears in vivo
Power causes screw frictional resistance to be greatly increased, and screws out screw and causes high effort for and often there will be screw being screwed sliding situation, particularly
Recent years is extensively applied along with lock screw, has thin spiral shell between the nail of this type of blade plate and its supporting lock screw nail tail
Stricture of vagina locks, and after union of fracture in suffering limb weight-bearing activities, more easily causes on screw nail tail and blade plate owing to screw meets with stresses
Screw thread between lock hole deforms upon, and the back-out making screw is more difficult, occurs that the probability twisting sliding screw is big when strength rotates
Increase greatly.
Screw stripped thread can substantially strengthen taking-up difficulty, extends operating time, increases and infects probability, occurs taking out the most even
Cause the severe complications such as refracture.Existing taper reverse spiral shell tap tapping and quincunx screwdriver etc. instrument all cannot
Self keep screwdriver tightly to block to be pressed in stripped thread in hexagonal groove, need external force that screwdriver could be kept tightly to block and be pressed in stripped thread
In interior hexagonal groove.User should firmly rotate when taking out, and the most firmly holds down screwdriver and tightly blocks and be pressed in stripped thread
In hexagonal groove, relatively more painstaking, the still easy stripped thread when resistance is bigger, mortality is higher.
Summary of the invention
It is an object of the invention to overcome above-mentioned weak point, it is provided that a kind of conical points sharp tackle head with press fastening device is sliding
Silk screw extractor.
The technical scheme provided according to the present invention, with the conical points sharp tackle head extractor for thread-stripping screws of press fastening device, bag
Include T-shaped handle and card pressure folder；Described T-shaped handle front end connects conical points sharp tackle head, and T-shaped handle is additionally provided with spherical nut and hexagonal spiral shell
Female；Described card pressure folder upper end is provided with U-shaped draw-in groove, and lower end is provided with U-shaped deck, between U-shaped draw-in groove and U-shaped deck by connecting rod even
Connect；Described U-shaped draw-in groove can block spherical nut, and U-shaped deck is positioned at below conical points sharp tackle head, blocks under slipped screws groove
Side.
The shank of T-shaped handle is provided with screw thread, and spherical nut is arranged at threaded upper end, coordinates between screw thread with hex nut.
Being provided with box thread inside described hex nut, screw thread is male thread, and both work in coordination connection.
The width of described U-shaped draw-in groove is identical with the width of T-shaped handle longitudinal direction handle.
The described first end of conical points sharp tackle matches each other with T-shaped handle front end and is connected, and other end cutter head is hexagonal pyramidal.Described
Conical points sharp tackle head hexagonal pyramidal cutter head matches each other with the interior hex slot of slipped screws front end.
Beneficial effects of the present invention: present configuration is simple, has success rate height, is not easy stripped thread, easy and simple to handle, bone free
Matter destroys, without advantages such as metal fillings residuals, maximum feature is that press fastening device can make this extractor need not by external force just to protect
Holding conical points sharp tackle head to be tightly stuck in stripped thread groove, be not easy to skid during taking-up, extraction efficiency is high.
Accompanying drawing explanation
Fig. 1 is present configuration schematic diagram.
Fig. 2 is card press-clamping structure left view of the present invention.
Description of reference numerals: 1, T-shaped handle；2, card pressure folder；3, conical points sharp tackle head；4, screw thread；5, spherical nut；6, hexagonal
Nut；7, U-shaped draw-in groove；8, U-shaped deck；9, slipped screws.
Detailed description of the invention
As shown in Figure 1-2: with the conical points sharp tackle head extractor for thread-stripping screws of press fastening device, including T-shaped handle 1 and card pressure
Folder 2.
Described T-shaped handle 1 includes horizontal hand holding handle and longitudinal shank, and both become T-shaped connection；T-shaped handle 1 front end connects
Conical points sharp tackle head 3, T-shaped handle 1 is additionally provided with spherical nut 5 and hex nut 6；The shank of T-shaped handle 1 longitudinal direction is provided with screw thread 4,
Spherical nut 5 is arranged at screw thread 4 upper end, and the lower end of spherical nut 5 is placed exactly in above screw thread 4, the fixing and T-shaped by screw thread 4
Relative position between handle 1；Hex nut 6 is fixed on screw thread 4, and wherein hex nut 6 is box thread, and screw thread 4 is male thread,
Hex nut 6 can move up and down along screw thread 4.
Spherical nut 5 central authorities are provided with through hole, and the size of through hole matches each other with the shank diameter of T-shaped handle 1 longitudinal direction, by spherical
Nut 5 is placed in longitudinal shank, carries out spacing by screw thread 4 top to spherical nut 5.The effect of spherical nut 5 is to reduce
Frictional resistance when card pressure folder rotates with the clamping of T-shaped arbor.
Described card pressure folder 2 upper ends are provided with U-shaped draw-in groove 7, and lower end is provided with U-shaped deck 8, logical between U-shaped draw-in groove 7 and U-shaped deck 8
Cross connecting rod to connect；Described U-shaped draw-in groove 7 matches, during clamping with the shank diameter of T-shaped handle 1 longitudinal direction so that U-shaped draw-in groove 7 can be right
Spherical nut 5 positions.U-shaped deck 8 below card pressure folder 2 blocks below slipped screws 9 groove.
Described sharp-pointed cutter head 3 one end matches each other with T-shaped handle 1 front end and is connected, and other end cutter head is hexagonal pyramidal.Described point
Sharp tackle head 3 hexagonal pyramidal cutter head matches each other with the interior hex slot of slipped screws 9 front end.Described sharp-pointed cutter head 3 is according to stripped thread spiral shell
The size of nail 9 includes a series of different specification.
When the present invention works, the suitably sharp-pointed cutter head 3 of the size Selection of the slipped screws 9 taken out the most as required, so
After sharp-pointed cutter head 3 is socketed on longitudinal shank front end of T-shaped handle 1, now longitudinal shank is provided with spherical nut 5 and hex nut
6, by hex nut 6 along screwing some, then the hexagonal pyramidal cutter head of conical points sharp tackle head 3 front end is directed at stripped thread spiral shell
Follow closely the interior hex slot of 9 upper ends, slightly firmly axially beat above T-shaped handle 1, make conical points sharp tackle head 3 be stuck in interior hexagonal stripped thread groove.
Take out card pressure folder 2, the U-shaped deck 8 of card pressure folder 2 lower ends is directed at below slipped screws 9 to be removed, and along T
The shank of shape handle longitudinal direction snaps in, and is then directed at above spherical nut 5 by the U-shaped draw-in groove 7 of card pressure folder 2 upper ends, and snaps in, now, and U
Type draw-in groove 7 is stuck in above spherical nut 5, rotates hex nut 6 along screw thread 4 so that spherical nut 5 blocks mutually with U-shaped draw-in groove 7
Tightly, now, press fastening device self forms tensioning state, it is not necessary to conical points sharp tackle head 3 can be kept tightly to be stuck in cunning by external force
In silk groove.After hexagonal pyramidal cutter head keeps tightly blocking and is pressed in the interior hex slot of slipped screws, T-shaped handle 1 is not just allowed when turning
Easily skid.
Finally, slipped screws 9 is driven to screw out by rotation T-shaped handle 1.
Claims (6)
1. with the conical points sharp tackle head extractor for thread-stripping screws of press fastening device, it is characterized in that: include T-shaped handle (1) and card pressure folder
(2)；Described T-shaped handle (1) front end connects conical points sharp tackle head (3), and T-shaped handle (1) is provided with spherical nut (5) and hex nut
(6)；Described card pressure folder (2) upper end is provided with U-shaped draw-in groove (7), and lower end is provided with U-shaped deck (8), U-shaped draw-in groove (7) and U-shaped deck (8)
Between connected by connecting rod；Described U-shaped draw-in groove (7) can block spherical nut (5), and U-shaped deck (8) is positioned at conical points sharp tackle head
(3) lower section.
2., as claimed in claim 1 with the conical points sharp tackle head extractor for thread-stripping screws of press fastening device, it is characterized in that: T-shaped handle
(1) shank is provided with screw thread (4), and spherical nut (5) is arranged at screw thread (4) upper end, between hex nut (6) and screw thread (4)
It is connected.
3., as claimed in claim 1 with the conical points sharp tackle head extractor for thread-stripping screws of press fastening device, it is characterized in that: described U
The width of the width of type draw-in groove (7) handle longitudinal with T-shaped handle (1) is identical.
4., as claimed in claim 1 with the conical points sharp tackle head extractor for thread-stripping screws of press fastening device, it is characterized in that: described cone
Shape sharp-pointed cutter head (3) one end matches each other with T-shaped handle (1) front end and is connected, and other end cutter head is hexagonal pyramidal.
5., as claimed in claim 4 with the conical points sharp tackle head extractor for thread-stripping screws of press fastening device, it is characterized in that: described cone
The hexagonal pyramidal cutter head of shape sharp-pointed cutter head (3) front end matches each other with the interior hex slot of slipped screws front end.
6., as claimed in claim 1 with the conical points sharp tackle head extractor for thread-stripping screws of press fastening device, it is characterized in that: described six
Angle nut (6) inwall is provided with box thread, and screw thread (4) is male thread, and both work in coordination connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610828457.0A CN106264704B (en) | 2016-09-18 | 2016-09-18 | Conical points sharp tackle head extractor for thread-stripping screws with press fastening device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610828457.0A CN106264704B (en) | 2016-09-18 | 2016-09-18 | Conical points sharp tackle head extractor for thread-stripping screws with press fastening device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106264704A true CN106264704A (en) | 2017-01-04 |
| CN106264704B CN106264704B (en) | 2019-01-08 |
Family
ID=57711732
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610828457.0A Expired - Fee Related CN106264704B (en) | 2016-09-18 | 2016-09-18 | Conical points sharp tackle head extractor for thread-stripping screws with press fastening device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106264704B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110315461A (en) * | 2018-03-28 | 2019-10-11 | 南宁富桂精密工业有限公司 | Pressing tool |
| CN112022322A (en) * | 2020-09-18 | 2020-12-04 | 中国人民解放军总医院第一医学中心 | Hexagonal screwdriver for orthopedics department |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2289531Y (en) * | 1997-04-10 | 1998-09-02 | 王洪亮 | Screw push type pin screwing device |
| US5951554A (en) * | 1997-10-02 | 1999-09-14 | Holmes; Russell P. | Screw removal system |
| CN2474100Y (en) * | 2001-03-16 | 2002-01-30 | 刘作华 | Intramarrow nail extractor |
| CN1765335A (en) * | 2005-11-19 | 2006-05-03 | 谢福广 | Multifunctional device for screwing out bone nail |
| CN201094664Y (en) * | 2007-08-24 | 2008-08-06 | 王忠春 | Medical automatic pressurization nail taking-out device |
| CN201299643Y (en) * | 2008-12-04 | 2009-09-02 | 胡令东 | Intramedullary nail extractor |
| CN202342175U (en) * | 2011-12-09 | 2012-07-25 | 殷铭 | Bone nail extractor |
| CN203089359U (en) * | 2013-02-19 | 2013-07-31 | 十堰市太和医院 | Special-shaped steel plate slide nail extractor for orthopedics |
| CN203263522U (en) * | 2013-06-05 | 2013-11-06 | 郝惠南 | Novel bone needle extractor |
| CN203777039U (en) * | 2014-04-02 | 2014-08-20 | 合肥市五洋医疗器械有限公司 | Pressing-type combined extractor used for slipped screw |
| CN206434408U (en) * | 2016-09-18 | 2017-08-25 | 无锡市第九人民医院 | Conical points sharp tackle head extractor for thread-stripping screws with press fastening device |
-
2016
- 2016-09-18 CN CN201610828457.0A patent/CN106264704B/en not_active Expired - Fee Related
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2289531Y (en) * | 1997-04-10 | 1998-09-02 | 王洪亮 | Screw push type pin screwing device |
| US5951554A (en) * | 1997-10-02 | 1999-09-14 | Holmes; Russell P. | Screw removal system |
| CN2474100Y (en) * | 2001-03-16 | 2002-01-30 | 刘作华 | Intramarrow nail extractor |
| CN1765335A (en) * | 2005-11-19 | 2006-05-03 | 谢福广 | Multifunctional device for screwing out bone nail |
| CN201094664Y (en) * | 2007-08-24 | 2008-08-06 | 王忠春 | Medical automatic pressurization nail taking-out device |
| CN201299643Y (en) * | 2008-12-04 | 2009-09-02 | 胡令东 | Intramedullary nail extractor |
| CN202342175U (en) * | 2011-12-09 | 2012-07-25 | 殷铭 | Bone nail extractor |
| CN203089359U (en) * | 2013-02-19 | 2013-07-31 | 十堰市太和医院 | Special-shaped steel plate slide nail extractor for orthopedics |
| CN203263522U (en) * | 2013-06-05 | 2013-11-06 | 郝惠南 | Novel bone needle extractor |
| CN203777039U (en) * | 2014-04-02 | 2014-08-20 | 合肥市五洋医疗器械有限公司 | Pressing-type combined extractor used for slipped screw |
| CN206434408U (en) * | 2016-09-18 | 2017-08-25 | 无锡市第九人民医院 | Conical points sharp tackle head extractor for thread-stripping screws with press fastening device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110315461A (en) * | 2018-03-28 | 2019-10-11 | 南宁富桂精密工业有限公司 | Pressing tool |
| CN112022322A (en) * | 2020-09-18 | 2020-12-04 | 中国人民解放军总医院第一医学中心 | Hexagonal screwdriver for orthopedics department |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106264704B (en) | 2019-01-08 |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190108 Termination date: 20190918 |
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| CF01 | Termination of patent right due to non-payment of annual fee |