CN105832400B - Telescopic orthopedic nail extractor - Google Patents
Telescopic orthopedic nail extractor Download PDFInfo
- Publication number
- CN105832400B CN105832400B CN201610283034.5A CN201610283034A CN105832400B CN 105832400 B CN105832400 B CN 105832400B CN 201610283034 A CN201610283034 A CN 201610283034A CN 105832400 B CN105832400 B CN 105832400B
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- China
- Prior art keywords
- cylinder
- screw
- nail
- cutting
- sleeve
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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.)
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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
- A61B17/88—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
- A61B2017/564—Methods for bone or joint treatment
-
- 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
- A61B2017/924—Impact element driving means
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- 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)
- Surgical Instruments (AREA)
Abstract
The invention discloses a kind of telescopic orthopedic nail extractor, including mainboard, the rotatable and then cutting-sleeve of cutting steel plate, it is arranged in taking nail counterpart and take screw assembly in the mainboard；The mainboard bottom is provided with the flange connector that can be rotatably assorted with cutting-sleeve, and mother board side is provided with the first motor that can be used for driving the cutting-sleeve to rotate；It is characterized in that：It is described take nail counterpart include coordinating cylinder, be connected to coordinate the first of cylinder upper end grip, coordinate outside cylinder and then the movable sleeve of folding grabbing claw and located at the second motor for being used to drive movable sleeve to move up and down for coordinating cylinder side wall located at coordinating the grabbing claw of cylinder lower end, can move up and down to be sheathed on.The present invention smoothly can take out the screw together with steel plate corrosion, taking-up for broken nail also fast and easy, effectively avoid the secondary injury to patient.
Description
Technical field
Invention belongs to orthopedic medical device field, more particularly, to a kind of telescopic orthopedic nail extractor.
Background technology
Fracture is that the integrality of phalanges and continuity are interrupted.It is obvious for shifting at present, need row open reduction and Kirschner wire fixation
Patient, generally all it is that replacement and fixation again is carried out to the bone piece of fracture site by steel plate, nail so that the bone piece of dislocation is in steel
It is closely joined together in the presence of plate bolt system, is grown by prolonged postoperative growth, the bone piece of fracture afterwards again
Go out new poroma, heal into again together.Generally require, by interior fixed taking-up, to avoid rejection between the fixed postoperative 1-2 of in-seam
Reaction etc., yet with the overlong time of healing, fine motion displacement can occur for steel nail, or weld together with steel plate, it is difficult to take out；
And in the influence of the factors such as accident, misoperation, easily there is screw extraction, so as to need increasing fluting face when taking nail
Product, secondary injury is caused to patient.
The content of the invention
The present invention is for overcome the deficiencies in the prior art, there is provided a kind of screw for quickly removing corrosion in steel plate, bone
Matter failure mechanics are small, can conveniently take out the telescopic orthopedic nail extractor of broken nail.
To achieve these goals, the present invention uses following technical scheme：A kind of telescopic orthopedic nail extractor, including master
Plate, the rotatable and then cutting-sleeve of cutting steel plate, it is arranged in taking nail counterpart and take screw assembly in the mainboard；The mainboard
Bottom is provided with the flange connector that can be rotatably assorted with cutting-sleeve, and mother board side, which is provided with, can be used for driving what the cutting-sleeve rotated
First motor；It is described take nail counterpart include coordinating cylinder, be connected to coordinate the first of cylinder upper end grip, located at coordinating cylinder
The grabbing claw of lower end, it can move up and down to be sheathed on and coordinate cylinder outer and then the movable sleeve of folding grabbing claw and located at coordinating cylinder side wall
For the second motor for driving movable sleeve to move up and down；The grabbing claw is made up of at least two pawl bars, and the pawl bar one end is consolidated
It is connected in and coordinates cylinder bottom, the other end curves inwardly to form grasping flange that can capture screw and lifting, and the grasping is convex
Edge and the pawl bar are magnetic strength structure setting；External screw thread is offered outside the cooperation cylinder, offers and is available on the mainboard
Coordinate the through hole inserted of cylinder, offered in the through hole and coordinate the internal thread being spirally connected with the external screw thread；It is described to take screw assembly to include opening
Located at coordinating taking nail groove, be rotatably placed in this and take boring bar in nail groove and rotatable, being placed in of moving up and down in cylinder
This takes the punching bar in nail groove；The boring bar upper end is connected with the second gripping handle, and second gripping is provided with for driving
The 3rd motor that the boring bar is rotated and then drilled to screw；The punching bar bottom is provided with punching press cutter head, the punching
Push type broach head is arranged to pyramidal structure, and the cross section of the punching press cutter head is set for triangle；The punching bar upper end, which is connected with, to be easy to
Rotate the 3rd of the punching bar and grip handle, the 3rd grips provided with for driving the punching bar to move up and down and then making punching press
Cutter head is stamped into the punching motor in screw.The section of punching press cutter head is arranged to three-legged structure by the present invention, passes through punch rod
Move up and down in punching press cutter head punching press to screw so that the punching hole of screw end is presented three-legged structure, and then punching hole with
Rotation stop can be achieved between punching press cutter head to coordinate, and then realize that the rotation stop between punch rod and screw coordinates, by rotating punch rod
Quickly screw can be screwed out, will not occur first to take nail speed fast, efficiency high, it is not necessary to repeatedly weighed to sliding between the two
Multiple operation；But do not interfixed between punching hole and punching press cutter head, choosing between the two can be realized easily, and then screw takes
Easily it can be removed after going out from punch rod, it is not necessary to carried out by external tool；The pyramidal structure of punching press cutter head is set, and is reduced
Contact area during punching press between cutter head and screw, increase the pressure on punching press point, be easy to cutter head to pour in screw；Boring bar can
Drilling operation first is carried out to screw before punching operation, is needing the position of punching press to drill through an aperture, so that cutter head
Punch operation it is more easy；Grabbing claw can be supported when punch rod is punched out operation to screw, and slightly upward
Lift screw, there is provided give screw one upward active force, prevent screw from being moved down during punch operation；Grabbing claw is
Folding is set, and realizes that folding captures and then to screw by movable sleeve, and then pawl bar can be adjacent to screw completely, and positioning is more
For stabilization；And can be captured for the screw of different size, the scope of application is more extensive；Grasp flange and the pawl bar
Magnetic strength structure setting, can effectively adsorb the caused iron filings in screw punch process, prevent iron filings from falling into sclerotin；Coordinate cylinder
It is to be threadedly coupled between mainboard, the positioning between grabbing claw and screw is effectively realized by relative position between the two,
Spiro connection structure is stable, coordinates cylinder to be not easy to be moved with mainboard during punch operation, and then effectively to the grabbing claw of bottom
Positioned, limit the movement of grabbing claw.
Further, in addition to a heating member, the heating member is included wearing to the heating pole taken in nail groove, located at adding
The heating head of hot rod lower end, the battery being embedded in heating pole and the controlling switch located at heating boom end；The heating head is distinguished
Battery and controlling switch are electrically connected in by electric wire, heating pole insertion can be taken in nail groove before punch operation, screw is entered
Row heating, the screw after heating are more easy to be punched, the time required to reducing punching；Screw, can under the influence of expanding with heat and contract with cold simultaneously
Gap is produced with steel plate junction, is easy to screw to take out.
Further, the cutting-sleeve is used for cutting steel plate end for pyramidal structure setting, is more easy to cut steel plate.
Further, the cutting-sleeve, cooperation cylinder are local transparent structure setting；Can be by transparent configuration to taking nail
When screw and each component between relative position observed, it is easy to operation, reduce operational error.
Further, the punching press cutter head of alloy steel material by being made up.
In summary, the present invention smoothly can take out the screw together with steel plate corrosion, and then steel plate is taken out, and operate
It is easy；Coordinated by the rotation stop between punch rod and screw, effectively screw is screwed out, takes nail efficiency high；Taking-up for broken nail
Also fast and easy, without increasing area of slotting, destruction of bone face is small, effectively avoids the secondary injury to patient.
Brief description of the drawings
Fig. 1 is schematic structural view of the invention.
Fig. 2 is the structural representation of boring bar.
Fig. 3 is the structural representation of punching bar.
Fig. 4 is the first embodiment schematic diagram of punching press cutter head.
Fig. 5 is second of embodiment schematic diagram of punching press cutter head.
Embodiment
In order that those skilled in the art are better understood from the present invention program, below in conjunction with the embodiment of the present invention
Accompanying drawing, clear, complete description is carried out to the technical scheme in the embodiment of the present invention.
As Figure 1-5, a kind of telescopic orthopedic nail extractor, including mainboard 1, rotatable and then cutting steel plate cutting set
Cylinder 2, it is arranged in taking nail counterpart and take screw assembly in the mainboard 1；Preferably, the cutting-sleeve 2 is used for cutting steel plate end
Set for pyramidal structure, be easy to cutting steel plate；This takes nail counterpart to include coordinating cylinder 31, first to grip 32, grabbing claw, activity
The motor 34 of set 33 and second；It is described to take screw assembly to include taking nail groove 41, boring bar 42, punching bar 43, second to grip handle
44 and the 3rd motor 45；By moving up and down the position for coordinating cylinder 31 to adjust bottom grabbing claw, screw is firmly grasped；It is logical
Crossing up and down action punch rod drives punching press cutter head to be punched out screw top, passes through stopping between punching press cutter head and punching afterwards
Turn to coordinate, rotary punching bar can screw out screw；Due to screw may corrosion and linked together in steel plate, Wu Fafen
From, so after being cut by cutting-sleeve 2 to the steel plate of screw periphery, then carry out taking nail to operate；Can smoothly by with steel
The screw of plate corrosion together is taken out, and then steel plate is taken out, easy to operate；Effectively screw is screwed out, takes nail efficiency high；For
The taking-up of broken nail also fast and easy, without increasing area of slotting, destruction of bone face is small, effectively avoids the secondary injury to patient.
Specifically, offering external screw thread outside the cooperation cylinder 31, offered on the mainboard 1 and be available for coordinating cylinder 31 to insert
Through hole, offer in the through hole and coordinate the internal thread being spirally connected with the external screw thread；First gripping is connected to cooperation cylinder 32
, it is necessary to which mobile coordinate during cylinder 31 and can be gripped by gripping first being operated after 32, it is more convenient to operate for 31 top；It is described
Grabbing claw is located at cylinder lower end is coordinated, specifically, the grabbing claw is made up of at least two pawl bars 35, the one end of pawl bar 35 is fixedly connected
In coordinating the bottom of cylinder 31, the other end curves inwardly to form grasping flange 36 that can capture screw and lifting；The work
Dynamic set 33, which is sheathed on, to be coordinated outside cylinder 31, and can be moved up and down and then be controlled the folding of grabbing claw, so that when capturing screw, can
Pass through crawl or release of the mobile realization of movable sleeve to screw；Second motor 34 is used for located at cylinder side wall is coordinated
Driving movable sleeve 33 moves up and down；As preferable, the grasping flange 36 is connected with card cutting knife first 7, and the cooperation cylinder
31 are connected with the 4th motor for driving the cooperation cylinder 31 to rotate；When taking broken nail, the driving of the 4th motor coordinates
Cylinder 31 rotates and then drives the card cutting knife first 7 to rotate, so as to be slotted to broken nail side wall so that grasping flange 36 can be caught in disconnected
In the side wall of nail, broken nail is grasped.
Specifically, described take nail groove 41 to be opened in cooperation cylinder, punching bar 43 can take under the driving of punching motor 53
To follow closely in groove and move up and down, and then punching press cutter head 51 is stamped into screw, punching press cutter head 51 is arranged on the bottom of punching bar 43,
Preferably, the punching press cutter head 51 is arranged to pyramidal structure, as shown in figure 4, the cross section of the punching press cutter head 51 sets for triangle
Put；So as to when pouring in screw, rotation stop coordinate between screw, so as to easily screw out screw；Preferably, the punching
The cross section of push type broach first 51 may be configured as structure as shown in Figure 5, and the side of punching press cutter head 51 curves inwardly to form groove, so as to
The overall size of punching press cutter head 51 is reduced, the punching press contact area with screw is reduced, is more easy to punching；In other embodiment,
The cross section of the punching press cutter head 51 may also be configured to other structures, such as rhombus, hexagon；Specifically, punching press cutter head 51 by
Alloy steel material is made, and hardness is larger, and punch operation is relatively easy to；In order to facilitate turn punching bar 43, we are in punching bar 43
Upper end is connected with the 3rd gripping 52, so as to be operated during turn punching bar 43 by gripping the 3rd gripping 52.
The boring bar 42 can be rotated in taking in nail groove 41 under the driving of the 3rd motor 45, so as to spiral shell
Nail is drilled；Boring bar 42 is taken for convenience, we are connected to the second gripping in the upper end of boring bar 42 44, need
To be operated again after the second gripping when taking nail groove 41 to take out boring bar 42, can be gripped 44, it is more convenient；Further
, a heating member can also be set, and the heating member includes heating pole 61, heating head 62, battery and controlling switch, heating head
62 are arranged on the lower end of heating pole 61, and battery is embedded in heating pole 61, and controlling switch is located at the end of heating pole 61, and heating head 62 is divided
Battery and controlling switch are not electrically connected in by electric wire；Nail groove 41 can be inserted or taken out to heating pole 61, so as to be punched out
Before operation, first pass through heating member and screw is heated so that screw is easier to be threaded into, and accelerates punching process.
The bottom of mainboard 1 is provided with flange connector 11, and the flange connector 11 can be rotatably assorted with cutting-sleeve 2, mainboard
Sidepiece is provided with the first motor 12, and the cutting-sleeve 2 is rotated and can rotated under the driving of the first motor 12；It is preferred that
, the grasping flange 36 and the pawl bar 35 are magnetic strength structure setting, can effectively adsorb and be produced in screw punch process
Iron filings, prevent iron filings from falling into sclerotin；The cutting-sleeve 2, cylinder 31 is coordinated to be local transparent structure setting；Can be by saturating
Relative position when bright structure is to taking nail between screw and each component is observed, easy to operation, reduces operational error.
Specific operation process is as follows：After seeing screw present position clearly, mainboard is held, the bottom of cutting-sleeve 2 is supported to screw
On the steel plate of outer circumferential side, screw top is ensphered in cutting-sleeve 2, first is held afterwards and grips handle, turn coordinates cylinder to transport downwards
It is dynamic, inserted when moving to screw in operation pawl, and grasp flange 36 it is above when, drive movable sleeve downward actuation, tighten up
Pawl bar, movable sleeve can not be further continued for moving down after grasping flange 36 and supporting to screw side wall, and now movable sleeve is fixed in position,
So as to remain that grasping flange 36 is in the state firmly grasped to screw；Slightly turn coordinates cylinder upwards afterwards so that grasping is convex
Edge 36 has the power lifted upwards to screw；Boring bar is inserted and taken in nail groove, by the rotation of boring bar to screw
Top is drilled, and is drilled through an aperture and is stopped drilling afterwards；Boring bar is taken out, heating pole is inserted, heating head is inserted into aperture
It is interior, screw is conducted heat so that screw is integrally heated, consequently facilitating punching；Heating pole is taken out afterwards, inserts punch rod, is led to
Cross the quick up and down action of punch rod so that punching press cutter head carries out punching press to aperture, and then punching press cutter head is poured in screw；Afterwards
Drive cutting-sleeve to rotate, cutting is carried out to the steel plate around screw and is integrally separated with steel plate so that screw can be with respect to steel
Plate is rotated；Turn punch rod, screw is screwed out.
When being taken out to broken nail, control grasping flange 36 is moved to screw rod sidewall locations, and driving afterwards coordinates cylinder to turn
It is dynamic so that card cutting knife first 7 is slotted to broken nail side wall, and grasping flange 36 can be caught in the side wall of broken nail, and broken nail is grabbed
Hold, broken nail can be taken out by repeating above-mentioned punch operation afterwards.
Obviously, described embodiment is only the part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, it should all belong to the scope of protection of the invention.
Claims (4)
1. a kind of telescopic orthopedic nail extractor, including mainboard（1）, rotatable and then cutting steel plate cutting-sleeve（2）, be arranged in
The mainboard（1）It is interior to take nail counterpart and take screw assembly；The mainboard（1）Bottom is provided with can be with cutting-sleeve（2）It is rotatably assorted
Flange connector（11）, mother board side, which is provided with, can be used for driving the cutting-sleeve（2）The first motor rotated（12）；It is special
Sign is：It is described to take nail counterpart to include coordinating cylinder（31）, be connected to and coordinate the first of cylinder upper end to grip handle（32）, located at cooperation
The grabbing claw of cylinder lower end, it can move up and down and be sheathed on cooperation cylinder（31）Outer and then folding grabbing claw movable sleeve（33）And located at
Close cylinder side wall be used for drive movable sleeve（33）The second motor moved up and down（34）；The grabbing claw is by least two pawl bars
（35）Form, the pawl bar（35）One end is fixed on cooperation cylinder（31）Bottom, the other end curve inwardly to be formed and can grab screw
Grasping flange take and lifting（36）, the grasping flange（36）With the pawl bar（35）It is magnetic strength structure setting；It is described to match somebody with somebody
Close cylinder（31）Outside offers external screw thread, the mainboard（1）On offer be available for coordinate cylinder（31）The through hole inserted, in the through hole
Offer and coordinate the internal thread being spirally connected with the external screw thread；It is described to take screw assembly to take nail groove including being opened in coordinate in cylinder
（41）, be rotatably placed in this and take nail groove（41）Interior boring bar（42）And it is rotatable, move up and down be placed in this and take nail groove
Interior punching bar（43）；The boring bar（42）Upper end is connected with the second gripping handle（44）, the second gripping handle（44）It is provided with and uses
In the driving boring bar（42）The 3rd motor for rotating and then being drilled to screw（45）；The punching bar（43）Bottom
Provided with punching press cutter head（51）, the punching press cutter head（51）Pyramidal structure is arranged to, the punching press cutter head（51）Cross section be triangle
Shape is set；The punching bar（43）Upper end, which is connected with, is easy to the rotate the punching bar the 3rd gripping handle（52）, the 3rd grips handle
（52）It is provided with and is used to drive the punching bar（43）Move up and down and then make punching press cutter head（51）The punching electricity being stamped into screw
Machine（53）.
2. telescopic orthopedic nail extractor according to claim 1, it is characterised in that：Also include a heating member, the heating member
Including that can wear to taking nail groove（41）Interior heating pole（61）, located at heating pole（61）The heating head of lower end（62）, be embedded in
Heating pole（61）Interior battery and located at heating pole（61）The controlling switch of end；The heating head（62）It is electrically connected respectively by electric wire
In battery and controlling switch.
3. telescopic orthopedic nail extractor according to claim 1, it is characterised in that：The cutting-sleeve（2）For cutting
Steel plate end is set for pyramidal structure.
4. telescopic orthopedic nail extractor according to claim 1, it is characterised in that：The punching press cutter head（51）By for alloy
Steel material is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610283034.5A CN105832400B (en) | 2016-05-03 | 2016-05-03 | Telescopic orthopedic nail extractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610283034.5A CN105832400B (en) | 2016-05-03 | 2016-05-03 | Telescopic orthopedic nail extractor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105832400A CN105832400A (en) | 2016-08-10 |
| CN105832400B true CN105832400B (en) | 2017-12-01 |
Family
ID=56591310
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610283034.5A Expired - Fee Related CN105832400B (en) | 2016-05-03 | 2016-05-03 | Telescopic orthopedic nail extractor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105832400B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106236244B (en) * | 2016-08-31 | 2019-07-09 | 北京爱康宜诚医疗器材有限公司 | Skeleton fixing nail withdrawing device and skeleton fixing nail extraction system |
| CN107157569A (en) * | 2017-06-14 | 2017-09-15 | 高飞 | A kind of orthopaedics bone nail-fetching device |
| CN107753097B (en) * | 2017-11-22 | 2019-12-20 | 李志鹏 | Orthopedic nail taking device and using method thereof |
| CN109091221A (en) * | 2018-08-17 | 2018-12-28 | 毛金霞 | A kind of bone surgery device for fetching nail |
| CN109984832B (en) * | 2018-12-28 | 2022-04-15 | 丽水市人民医院 | Hollow nail and matched nail extractor thereof |
| CN109793566B (en) * | 2019-01-11 | 2020-08-25 | 温月云 | Orthopedic nail taking device capable of preventing back movement |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5951554A (en) * | 1997-10-02 | 1999-09-14 | Holmes; Russell P. | Screw removal system |
| CN201542737U (en) * | 2009-09-29 | 2010-08-11 | 王卫国 | Screw extraction screwdriver with upper clamping device and lower clamping device for orthopaedics |
| CN203898421U (en) * | 2014-05-12 | 2014-10-29 | 熊光星 | Orthopedic surgery broken screw removing device |
| CN203953796U (en) * | 2014-05-12 | 2014-11-26 | 熊光星 | Blade plate screw withdrawing device |
| CN204839723U (en) * | 2015-07-13 | 2015-12-09 | 赵全明 | Orthopaedic nail removing device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100087831A1 (en) * | 2008-10-07 | 2010-04-08 | Donald Marx | Knee replacement nail remover |
-
2016
- 2016-05-03 CN CN201610283034.5A patent/CN105832400B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5951554A (en) * | 1997-10-02 | 1999-09-14 | Holmes; Russell P. | Screw removal system |
| CN201542737U (en) * | 2009-09-29 | 2010-08-11 | 王卫国 | Screw extraction screwdriver with upper clamping device and lower clamping device for orthopaedics |
| CN203898421U (en) * | 2014-05-12 | 2014-10-29 | 熊光星 | Orthopedic surgery broken screw removing device |
| CN203953796U (en) * | 2014-05-12 | 2014-11-26 | 熊光星 | Blade plate screw withdrawing device |
| CN204839723U (en) * | 2015-07-13 | 2015-12-09 | 赵全明 | Orthopaedic nail removing device |
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| Publication number | Publication date |
|---|---|
| CN105832400A (en) | 2016-08-10 |
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| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Liu Bin Inventor before: Ji Weiping Inventor before: Fan Qiuping Inventor before: Wang Bo |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171201 Termination date: 20180503 |