CN106264704B - 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
- CN106264704B CN106264704B CN201610828457.0A CN201610828457A CN106264704B CN 106264704 B CN106264704 B CN 106264704B CN 201610828457 A CN201610828457 A CN 201610828457A CN 106264704 B CN106264704 B CN 106264704B
- Authority
- CN
- China
- Prior art keywords
- thread
- shaped card
- conical points
- fastening device
- shape handle
- 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.)
- Expired - Fee Related
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
- A61B17/88—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, 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
- A61B17/88—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
Abstract
The present invention relates to a kind of conical points sharp tackle head extractor for thread-stripping screws with press fastening device, belongs to orthopedic medical device technical field.It includes T shape handle and card pressure folder；The T shape handle front end connects conical points sharp tackle head, is additionally provided with spherical nut and hex nut on T shape handle；The card pressure folder upper end is equipped with U-shaped card slot, and lower end is equipped with U-shaped card seat, is connected between U-shaped card slot and U-shaped card seat by connecting rod；The U-shaped card slot can block spherical nut, and U-shaped card seat blocks below slipped screws slot.The configuration of the present invention is simple, have many advantages, such as that success rate is high, be not easy stripped thread, be easy to operate, being remained without destruction of bone, without metal fillings, maximum feature is that press fastening device does not need just to be able to maintain with external force when conical points sharp tackle head is tightly stuck in stripped thread slot, takes out and is not easy to skid, and extraction efficiency is high.
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, belongs to orthopaedic medical treatment device
Tool technical field.
Background technique
Bone plate and the fixed fracture of screw have become current common methods of internal fixation, currently, interior hexagon screw is
The most frequently used screw of orthopaedics.It needs to take out internal synthetism plate bolt after union.Because screw bears larger answer in vivo
Power causes screw frictional resistance to greatly increase, and screws out screw and causes high effort for and often will appear screw being screwed sliding situation, especially
Recent years is widely applied with lock screw, has thin spiral shell between the nail hole of such bone plate and its matched lock screw nail tail
Line locking after union in suffering limb weight-bearing activities, more easily causes on screw nail tail and bone plate since screw meets with stresses
Deformation occurs for screw thread between lock hole, keeps the back-out of screw more difficult, and the probability for occurring twisting sliding screw when strength rotates is big
Increase greatly.
Screw stripped thread can obviously increase taking-up difficulty, extend operating time, increase infection probability, occur taking out failure even
Cause the severe complications such as refracture.The existing reversed spiral shell tap tapping of taper and quincunx screwdriver etc. tool can not
Itself keeps screwdriver tightly to block and is pressed in stripped thread in hexagonal groove, needs external force to be just able to maintain screwdriver and tightly block and is pressed in stripped thread
In interior hexagonal groove.User should firmly rotate when taking out, and firmly hold down screwdriver again and tightly block and be pressed in stripped thread
It is laborious in hexagonal groove, stripped thread is still easy when resistance is larger, failure rate is higher.
Summary of the invention
It is an object of the present invention to overcome the above deficiencies, and it is sliding to provide a kind of conical points sharp tackle head with press fastening device
Silk screw extractor.
According to technical solution provided by the invention, the conical points sharp tackle head extractor for thread-stripping screws with press fastening device, packet
Include T shape handle and card pressure folder；The T shape handle front end connects conical points sharp tackle head, is additionally provided with spherical nut and hexagonal spiral shell on T shape handle
It is female；The card pressure folder upper end is equipped with U-shaped card slot, and lower end is equipped with U-shaped card seat, is connected between U-shaped card slot and U-shaped card seat by connecting rod
It connects；The U-shaped card slot can block spherical nut, and U-shaped card seat is located at below conical points sharp tackle head, blocks under slipped screws slot
Side.
The shank of T shape handle is equipped with screw thread, and spherical nut is set to threaded upper end, cooperates between screw thread and hex nut.
It is equipped with box thread inside the hex nut, screw thread is male thread, and the two is worked in coordination connection.
The width of the U-shaped card slot is of same size with T shape handle longitudinal direction handle.
The first end of conical points sharp tackle matches each other with T shape handle front end and connect, and other end cutter head is in hexagonal pyramidal.It is described
Conical points sharp tackle head hexagonal pyramidal cutter head and the interior hex slot of slipped screws front end match each other.
Beneficial effects of the present invention: the configuration of the present invention is simple has success rate height, is not easy stripped thread, is easy to operate, is bone-free
The advantages that matter is destroyed, remained without metal fillings, maximum feature is that press fastening device can make the extractor not need to be protected with external force
It holds conical points sharp tackle head to be tightly stuck in stripped thread slot, when taking-up is not easy to skid, and extraction efficiency is high.
Detailed description of the invention
Fig. 1 is schematic structural view of the invention.
Fig. 2 is card press-clamping structure left view of the present invention.
Description of symbols: 1, T shape handle；2, card pressure folder；3, conical points sharp tackle head；4, screw thread；5, spherical nut；6, hexagonal
Nut；7, U-shaped card slot；8, U-shaped card seat；9, slipped screws.
Specific embodiment
It is as shown in Figs. 1-2: the conical points sharp tackle head extractor for thread-stripping screws with press fastening device, including T shape handle 1 and card pressure
Folder 2.
The T shape handle 1 includes lateral hand holding handle and longitudinal shank, and the two is at T-shaped connection；The connection of 1 front end of T shape handle
Conical points sharp tackle head 3 is additionally provided with spherical nut 5 and hex nut 6 on T shape handle 1；The longitudinal shank of T shape handle 1 is equipped with screw thread 4,
Spherical nut 5 is set to 4 upper end of screw thread, and the lower end of spherical nut 5 is placed exactly in 4 top of screw thread, passes through the fixation of screw thread 4 and T shape
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 be moved up and down along screw thread 4.
5 center of spherical nut is equipped with through-hole, and the shank diameter that the size of through-hole is longitudinal with T shape handle 1 matches each other, will be spherical
Nut 5 is placed in longitudinal shank, is limited by 4 top of screw thread to spherical nut 5.The effect of spherical nut 5 is to reduce
Card pressure folder clamps frictional resistance when rotating with T shape arbor.
2 upper ends of the card pressure folder are equipped with U-shaped card slot 7, and lower end is equipped with U-shaped card seat 8, lead between U-shaped card slot 7 and U-shaped card seat 8
Cross connecting rod connection；The longitudinal shank diameter of the U-shaped card slot 7 and T shape handle 1 matches, and when clamping, enables U-shaped card slot 7 right
Spherical nut 5 is positioned.The U-shaped card seat 8 of 2 lower section of card pressure folder blocks below 9 slot of slipped screws.
Described 3 one end of sharp cutter head matches each other with 1 front end of T shape handle and connect, and other end cutter head is in hexagonal pyramidal.The point
3 hexagonal pyramidal cutter head of sharp tackle head and the interior hex slot of 9 front end of slipped screws match each other.The sharp cutter head 3 is according to stripped thread spiral shell
The size of nail 9 includes a series of different specifications.
When the invention works, the suitably sharp cutter head 3 of the size selection of the slipped screws 9 taken out as needed first, so
Sharp cutter head 3 is socketed on to longitudinal shank front end of T shape handle 1 afterwards, longitudinal shank is equipped with spherical nut 5 and hex nut at this time
6, hex nut 6 is some along screwing, the hexagonal pyramidal cutter head of 3 front end of conical points sharp tackle head is then directed at stripped thread spiral shell
The interior hex slot of 9 upper ends is followed closely, it is slightly firmly axial to beat 1 top of T shape handle, it is stuck in conical points sharp tackle head 3 in interior hexagonal stripped thread slot.
Card pressure folder 2 is taken out, presses the U-shaped card seat 8 of 2 lower ends of folder to be directed at 9 lower section of slipped screws to be removed on card, and along T
The shank of shape handle longitudinal direction is caught in, and then presses the U-shaped card slot 7 of 2 upper ends of folder to be directed at 5 top of spherical nut on card, and be caught in, at this point, U
Type card slot 7 is stuck in 5 top of spherical nut, rotates hex nut 6 along screw thread 4, so that spherical nut 5 and U-shaped card slot 7 are blocked mutually
Tightly, it at this point, press fastening device itself forms tensioning state, does not need that conical points sharp tackle head 3 can be kept tightly to be stuck in cunning with external force
In silk slot.After hexagonal pyramidal cutter head, which keeps tightly blocking, to be pressed in the interior hex slot of slipped screws, T shape handle 1 is not just allowed when turning
Easily skid.
Finally, driving slipped screws 9 to screw out by rotation T shape handle 1.
Claims (6)
1. the conical points sharp tackle head extractor for thread-stripping screws of press fastening device is had, it is characterized in that: including T shape handle (1) and card pressure folder
(2)；The T shape handle (1) front end connects conical points sharp tackle head (3), and T shape handle (1) is equipped with spherical nut (5) and hex nut
(6)；Card pressure folder (2) upper end is equipped with U-shaped card slot (7), and lower end is equipped with U-shaped card seat (8), U-shaped card slot (7) and U-shaped card seat (8)
Between pass through connecting rod connect；The U-shaped card slot (7) can block spherical nut (5), and U-shaped card seat (8) is located at conical points sharp tackle head
(3) lower section.
2. the conical points sharp tackle head extractor for thread-stripping screws of press fastening device is had as described in claim 1, it is characterized in that: T shape handle
(1) shank is equipped with screw thread (4), and spherical nut (5) is set to screw thread (4) upper end, between hex nut (6) and screw thread (4)
It is cooperatively connected.
3. the conical points sharp tackle head extractor for thread-stripping screws of press fastening device is had as described in claim 1, it is characterized in that: the U
The width of type card slot (7) is of same size with the longitudinal handle of T shape handle (1).
4. the conical points sharp tackle head extractor for thread-stripping screws of press fastening device is had as described in claim 1, it is characterized in that: the cone
The sharp cutter head of shape (3) one end matches each other with T shape handle (1) front end and connect, and other end cutter head is in hexagonal pyramidal.
5. the conical points sharp tackle head extractor for thread-stripping screws of press fastening device is had as claimed in claim 4, it is characterized in that: the cone
The hexagonal pyramidal cutter head of the sharp cutter head of shape (3) front end and the interior hex slot of slipped screws front end match each other.
6. the conical points sharp tackle head extractor for thread-stripping screws of press fastening device is had as claimed in claim 2, it is characterized in that: described six
Nut (6) inner wall in angle is equipped with box thread, and screw thread (4) is male thread, and the two is worked 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 CN106264704A (en) | 2017-01-04 |
| CN106264704B true 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) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110315461B (en) * | 2018-03-28 | 2021-07-13 | 南宁富桂精密工业有限公司 | Pressing tool |
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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106264704A (en) | 2017-01-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11154969B2 (en) | Fastener extractor device | |
| CN106572872B (en) | Screw with insertion post | |
| CN203777039U (en) | Pressing-type combined extractor used for slipped screw | |
| CN105485138B (en) | Pre-tightening bolt assembly | |
| CN202682036U (en) | Wire sliding prevention bolt and hollow locking screwdriver matched with the same | |
| CN203125425U (en) | Angle-adjustable handle and socket wrench with same | |
| CN106264704B (en) | Conical points sharp tackle head extractor for thread-stripping screws with press fastening device | |
| CN106901848B (en) | Anchorage nail | |
| CN204921608U (en) | Half left -hand thread takes out screw | |
| CN206434408U (en) | Conical points sharp tackle head extractor for thread-stripping screws with press fastening device | |
| CN208388737U (en) | A kind of continuous locking type is autotomyed plug screw locking bottle opener | |
| CN203291020U (en) | Broken nail taking-out machine | |
| CN204765895U (en) | Orthopedics set screw follows closely extractor absolutely | |
| CN203885611U (en) | Simple and convenient broken nail extractor for orthopedics | |
| CN2912548Y (en) | Locked bone fracture screw | |
| CN207928368U (en) | Pedicle screw fixation operation operation lock screw and mating wrench set | |
| CN201734773U (en) | Left-hand threaded anti-slip screw and screwdriver for orthopedics | |
| CN217014191U (en) | Can prevent smooth silk extractor that drops | |
| CN201253256Y (en) | Nail taking device for orthopaedics | |
| CN201493814U (en) | Device for taking out broken pipe fitting | |
| CN205136293U (en) | Set screw | |
| CN211633547U (en) | Nail puller for orthopedics | |
| CN217886184U (en) | Orthopedic intra-vascular fixing bolt taking-out device | |
| CN211560312U (en) | Hollow nail | |
| CN201602860U (en) | Broken drill extractor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| 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 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |