CN106691576A - Device for withdrawing bolt in bone - Google Patents
Device for withdrawing bolt in bone Download PDFInfo
- Publication number
- CN106691576A CN106691576A CN201710010415.0A CN201710010415A CN106691576A CN 106691576 A CN106691576 A CN 106691576A CN 201710010415 A CN201710010415 A CN 201710010415A CN 106691576 A CN106691576 A CN 106691576A
- Authority
- CN
- China
- Prior art keywords
- stud
- fixed
- bone
- inner bolt
- withdrawing device
- 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
- A61B17/88—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
Abstract
The invention discloses a device for withdrawing a bolt in bone. The device for withdrawing the bolt in the bone comprises a fixed length fixing part, a fixing block, an inner stud and an outer stud, wherein the lower end of the inner stud is fixed to a replaceable screwdriver sleeve cylinder, the outer stud is a hollow pipe, the outer stud is rotatably arranged on the outer wall of the inner stud through screw-thread fit, the outer wall of the outer stud is provided with an external thread, the middle portion of the fixing block is provided with a thread through hole, the outer stud is rotatably arranged in the thread through hole, one end of the fixed length fixing part is fixedly provided with the fixing block, and the other end of the fixed length fixing part is used for fixing the bone. According to the device for withdrawing the bolt in the bone, through the match of the inner stud and the outer stud, the outer stud is capable of sliding up and down on the outer wall of the inner stud through a thread structure, a downwards pressure can be exerted on the inner stud along with the rotation of the outer stud to move upwards, the bolt in the bone is driven to be spun out through the rotation of the inner stud, and due to the fact that the larger the pressure is, the more unlikely the space between the screwdriver sleeve cylinder and the bolt is easy to slip, the bolt in the bone can be effectively taken out.
Description
Technical field
The present invention relates to medical instruments field, and in particular to a kind of bone inner bolt withdrawing device.
Background technology
Fracture internal fixaiion originates from and foreign countries, with fixed in steel plate screw, waits bone long good, steel plate is taken out, due to bone
Growth, be fixed on screw in bone can closely with the sclerotin adhesion of bone, cohesive force is very big, and screw is being taken out with screwdriver
When, easily skid, the situation for being difficult to take out is caused, this minor issue is also very troublesome thing in various big hospital.
It is clinical generally using wiring clip energetically, industrial brill, osteotome, osteotome and hacksaw etc. by a series of measures by inner bolt
Take out；Industry is bored, and screw cap is bored, it may appear that bottom is not removed in metal particle cleaning.Later stage does harm to an ancient egg-shaped, holed wind instrument of hepatic and renal function, remaining spiral shell
Nail rod also needs to be bored again with trepan；The hand drill time is long, and electric drill gets into screw, and metal particle cannot be cleaned up in ossis；
Osteotome, osteotome is also very undesirable.Operating time will occur long, wound is big, and easy infection loses blood many, and what is had grows up 8 hours.
Therefore lacking a kind of effectively and can quickly remove the instrument of bone inner bolt.
The content of the invention
The present invention is in order to overcome above-mentioned instrument blind area, there is provided taking-up that is a kind of effective and quickly removing bone inner bolt
Device.
To achieve these goals, the present invention uses following technical scheme：A kind of bone inner bolt withdrawing device, including it is fixed
Fixed part long, fixed block, interior stud and outer stud, the lower end of the interior stud are fixed with replaceable driver sleeve, described outer
Stud is hollow tube, and the outer stud coordinates rotation to be located at the outer wall of the interior stud by screw thread, and the outer wall of the outer stud sets
External screw thread is equipped with, the fixed block middle part offers tapped through hole, and the outer stud rotation is set in the tapped through hole, described fixed
The fixed block is fixed in one end of fixed part long, and the other end of the fixed length fixed part is used for fixing bone.
Preferably, the two ends of the fixed length fixed part are provided with hook formation, and the fixed block and bone are embedded in the hook
In shape structure.
Preferably, the upper end of the interior stud is provided with the first handle of the convenient rotation interior stud.
Further, the lower end of the interior stud is the fixed column of rectangular-shape, and the outer wall of the fixed column is arranged with
Driver sleeve.
Preferably, the upper end of the outer stud is fixed with second handle.
Preferably, the first handle is detachably mounted to the upper end of the interior stud.
Further, the second handle is detachably mounted to the upper end of the outer stud.
Preferably, the fixed length fixed part is steel wire ring.
Further, the upper surface of the fixed block is provided with the groove for steel wire ring insertion.
Coordinated by the interior stud and the outer stud in the present invention, the outer stud can lead on the outer wall of interior stud
Crossing helicitic texture to slide up and down, the driver sleeve of interior stud lower end is contacted with the screw in bone, by will be moved on outer stud, making
Obtain fixed block fixed on outer stud outer wall to be pressed with the upper end of the fixed length fixed part, due to the lower end of the fixed length fixed part
With bone pressing, therefore give interior stud downward pressure with the outer upward athletic meeting of stud is rotated, that is, increase driver sleeve with
The contact of the screw in bone, after pressure is sufficiently large, rotates interior stud, and interior stud drives driver sleeve to be rotated,
Driver sleeve drives the screw in bone to screw out, due to being just less susceptible to beat between the bigger driver sleeve of the pressure and screw
It is sliding, therefore can effectively take out the screw in bone, also to rotate outer stud while stud in rotation, allow outer stud after
Continuous motion upwards, in order to keep the pressure between driver sleeve and screw.
The present invention has simple structure, easy to use, can fast and effeciently take out the advantage of the screw in bone.
Brief description of the drawings
Fig. 1 is the structural representation of the embodiment of the present invention 1.
Fig. 2 is the right view of Fig. 1.
Fig. 3 is the structural representation of interior stud in the embodiment of the present invention 1.
Fig. 4 is the structural representation of the embodiment of the present invention 2.
Specific embodiment
Technical scheme is further elaborated with reference to specific embodiment.
Embodiment 1
A kind of embodiment 1 of the bone inner bolt withdrawing device as shown in Fig. 1 ~ Fig. 3, including fixed length fixed part 1, fixed block 5,
Interior stud 3 and outer stud 4, the lower end of the interior stud 3 are fixed with replaceable driver sleeve 2, and the lower end of interior stud 3 is rectangular
The fixed column of body shape, the outer wall of the fixed column is arranged with driver sleeve 2, and the upper end of interior stud 3 is provided with described in convenient rotation
Dismountable first handle 7 of interior stud, the outer stud 4 is hollow tube, and the outer stud coordinates rotation to be located at institute by screw thread
The outer wall of interior stud 3 is stated, the upper end of the outer stud 4 is detachably and fixedly provided with second handle 6, and the outer wall of the outer stud 4 sets
External screw thread is equipped with, the middle part of the fixed block 5 offers tapped through hole, and the rotation of outer stud 4 is set in the tapped through hole, described
The two ends of fixed length fixed part 1 are provided with hook formation, and the fixed block 5, the fixed length are fixed in one end of the fixed length fixed part 1
The other end of fixed part is used for fixing bone.
The present embodiment when in use, the lower end of fixed length fixed part 1 is hooked on bone, and upper end hook sets the fixation fixed block
5, the outer stud 4 of turn causes that fixed block 5 and outer stud 4 are moved upwardly together, the upper end of the top pressure fixed length fixed part 1 of fixed block 5, this
When driver sleeve 2 and bone inner bolt be in big pressure contact, then rotate the screw that interior stud 3 is gradually screwed out in bone, rotating
While interior stud 3, driver sleeve 2 can reduce with the pressure of bone inner bolt, in order to keep pressure, outer stud be rotated simultaneously
4 allow fixed block 5 to continue the upper end of top pressure fixed length fixed part 1, are that driver sleeve 2 and bone inner bolt provide lasting big pressure,
Untill screw is taken out completely.
Embodiment 2
A kind of embodiment 2 of bone inner bolt withdrawing device as shown in Figure 4, the places different from structure in embodiment 1 exist
In, fixed length fixed part 8 be the steel wire ring of closing, for the distance between fixing bone and fixed block, accordingly, fixed block it is upper
End face is provided with the groove for the insertion of fixed part 8.
The use principle of embodiment 2 is same as Example 1, directly replaces fixed length fixed part 8, no longer goes to live in the household of one's in-laws on getting married herein
State.
NM technology is prior art in the present invention.
Embodiments of the invention 1 and embodiment 2 are the preferred embodiment of technical solution of the present invention, but are not to the present invention
The further restriction of claim, any deterioration or equivalents all should belong to the protection domain of the claims in the present invention with
It is interior.
Claims (9)
1. a kind of bone inner bolt withdrawing device, it is characterised in that：Including fixed length fixed part, fixed block, interior stud and outer stud,
The lower end of the interior stud is fixed with replaceable driver sleeve, and the outer stud is hollow tube, and the outer stud passes through screw thread
Rotation is coordinated to be located at the outer wall of the interior stud, the outer wall of the outer stud is provided with external screw thread, and the fixed block middle part offers
Tapped through hole, the outer stud rotation is set in the tapped through hole, and the fixed block, institute are fixed in one end of the fixed length fixed part
The other end of fixed length fixed part is stated for fixing bone.
2. the bone inner bolt withdrawing device according to claim 1, it is characterised in that：The two ends of the fixed length fixed part
Hook formation is provided with, the fixed block and bone are embedded in the hook formation.
3. the bone inner bolt withdrawing device according to claim 1, it is characterised in that：The upper end of the interior stud is set
There is the first handle of the convenient rotation interior stud.
4. the bone inner bolt withdrawing device according to claim 3, it is characterised in that：The lower end of the interior stud is length
The fixed column of cube shape, the outer wall of the fixed column is arranged with the driver sleeve.
5. the bone inner bolt withdrawing device according to claim 1, it is characterised in that：The upper end of the outer stud is fixed
There is second handle.
6. the bone inner bolt withdrawing device according to claim 3, it is characterised in that：The first handle is dismountable
It is fixed on the upper end of the interior stud.
7. the bone inner bolt withdrawing device according to claim 5, it is characterised in that：The second handle is dismountable
It is fixed on the upper end of the outer stud.
8. the bone inner bolt withdrawing device according to claim 1, it is characterised in that：The fixed length fixed part is steel wire
Ring.
9. the bone inner bolt withdrawing device according to claim 8, it is characterised in that：The upper surface of the fixed block sets
It is equipped with the groove for steel wire ring insertion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710010415.0A CN106691576A (en) | 2017-01-06 | 2017-01-06 | Device for withdrawing bolt in bone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710010415.0A CN106691576A (en) | 2017-01-06 | 2017-01-06 | Device for withdrawing bolt in bone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106691576A true CN106691576A (en) | 2017-05-24 |
Family
ID=58907983
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710010415.0A Pending CN106691576A (en) | 2017-01-06 | 2017-01-06 | Device for withdrawing bolt in bone |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106691576A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108515491A (en) * | 2018-07-12 | 2018-09-11 | 张新 | A kind of nail extractor |
| CN112890942A (en) * | 2021-01-13 | 2021-06-04 | 蔡执中 | But orthopedics is with self-cleaning's nail device of getting |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040158257A1 (en) * | 2003-02-12 | 2004-08-12 | Bonati Alfred O. | Extractor tube for removing orthopaedic hardware |
| 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 |
| CN201316312Y (en) * | 2008-12-17 | 2009-09-30 | 安阳钢铁集团有限责任公司 | Bone plate fixer |
| WO2010042251A1 (en) * | 2008-10-07 | 2010-04-15 | Donald Marx | Knee replacement nail remover |
| CN103565510A (en) * | 2013-10-10 | 2014-02-12 | 石国华 | Orthopaedic nail extractor |
-
2017
- 2017-01-06 CN CN201710010415.0A patent/CN106691576A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040158257A1 (en) * | 2003-02-12 | 2004-08-12 | Bonati Alfred O. | Extractor tube for removing orthopaedic hardware |
| 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 |
| WO2010042251A1 (en) * | 2008-10-07 | 2010-04-15 | Donald Marx | Knee replacement nail remover |
| CN201316312Y (en) * | 2008-12-17 | 2009-09-30 | 安阳钢铁集团有限责任公司 | Bone plate fixer |
| CN103565510A (en) * | 2013-10-10 | 2014-02-12 | 石国华 | Orthopaedic nail extractor |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108515491A (en) * | 2018-07-12 | 2018-09-11 | 张新 | A kind of nail extractor |
| CN112890942A (en) * | 2021-01-13 | 2021-06-04 | 蔡执中 | But orthopedics is with self-cleaning's nail device of getting |
| CN112890942B (en) * | 2021-01-13 | 2022-11-29 | 嘉兴慧泉生物科技有限公司 | But orthopedics is with self-cleaning's nail device of getting |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| 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: 20170524 |