CN110226964B - Screw extractor for disassembling bone fixing instrument - Google Patents
Screw extractor for disassembling bone fixing instrument Download PDFInfo
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- CN110226964B CN110226964B CN201910615345.0A CN201910615345A CN110226964B CN 110226964 B CN110226964 B CN 110226964B CN 201910615345 A CN201910615345 A CN 201910615345A CN 110226964 B CN110226964 B CN 110226964B
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- 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
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Abstract
The invention relates to the technical field of orthopedic medical equipment, in particular to a screw extractor for disassembling a bone fixing instrument. A screw extractor for disassembling a bone fixing instrument comprises a stabilizing frame, a clamping part and an adjusting sleeve connected with the clamping part, wherein the clamping part comprises a clamping piece and an arc-shaped stable piece arranged at a port of the clamping piece, the clamping piece comprises a horn-shaped clamping piece body and a threaded pipe arranged at the tail part of the clamping piece, the adjusting sleeve is sleeved on the threaded pipe, the stabilizing frame comprises a fixing plate and a support for supporting the fixing plate, at least two jacks are formed in the fixing plate, the adjusting sleeve is inserted in the jacks, adjusting plates are arranged at intervals on the fixing plate, through holes are formed in the adjusting plates, the adjusting sleeve is inserted in the through holes, and an adjusting handle is arranged at one end, far away from the threaded pipe, of the adjusting sleeve; the fixed plate is provided with an adjusting piece for adjusting the distance between the fixed plate and the adjusting plate. A plurality of screws can be unloaded simultaneously, and the working efficiency is greatly improved.
Description
Technical Field
The invention relates to the technical field of orthopedic medical equipment, in particular to a screw extractor for disassembling a bone fixing instrument.
Background
With the progress and development of science and technology, the orthopedic technology is continuously innovated and improved. In clinical practice of orthopedic surgery, a fracture site is often fixed using a steel plate and a mating screw. The situation that the screw can not be efficiently disassembled in the process of disassembling the screw due to uneven installation angle, force application or rust of the screw in the process of installing or disassembling the steel plate is caused. The problem generated in the clinical process is solved, the nail path is not expanded as much as possible, and the problem that the injury part is prevented from being more seriously injured becomes a problem which needs to be solved urgently.
In clinical practice, the conventional way is to repeatedly reverse and twist the broken screw or rusty and slippery screw exposed outside the bone by using forceps or tweezers, and the process of removing the screw by medical staff is time-consuming and quite laborious, and the uncertainty of removing the screw is quite large.
At present, some devices are also used for solving the problems in practical clinical application, but the existing devices can efficiently disassemble screws for bone fixing instruments, but the structure is complex and the operation is complex; some devices have lower efficiency though having simpler structure and simple and convenient operation, and can not effectively lighten the screw for medical staff to disassemble the bone fixing instrument.
Because a plurality of screws are often needed for fixation in the process of fixing the bone fixation instrument, if one screw is unloaded in the unloading process, the unloading time is greatly increased, the operation time is increased, and the patient and medical staff are greatly burdened, while the existing device can only carry out single unloading on the screws and can not carry out a plurality of screws simultaneously, so that the efficiency is lower.
Disclosure of Invention
The invention provides a screw extractor for disassembling a bone fixing instrument, which aims to solve the problem that the prior device is lack of and can only unload a plurality of screws singly and simultaneously has low efficiency.
The invention relates to a screw extractor for disassembling a bone fixing instrument, which adopts the following technical scheme: a screw extractor for disassembling a bone fixing instrument comprises a stabilizing frame, a clamping part and an adjusting sleeve connected with the clamping part, wherein the clamping part comprises a clamping piece and an arc-shaped stable piece arranged at a port of the clamping piece, the clamping piece comprises a horn-shaped clamping piece body and a threaded pipe arranged at the tail part of the clamping piece, the adjusting sleeve is sleeved on the threaded pipe, the stabilizing frame comprises a fixing plate and a support for supporting the fixing plate, at least two jacks are formed in the fixing plate, the adjusting sleeve is inserted into the jacks, adjusting plates are arranged on the fixing plate at intervals, through holes are formed in the adjusting plates, the adjusting sleeve is inserted into the through holes, and one end, far away from the threaded pipe, of the adjusting sleeve is provided with an adjusting handle; the fixing plate is provided with an adjusting piece for adjusting the position between the fixing plate and the adjusting plate.
The clamping piece body outside be provided with the screw thread, the clamping piece body adopt elastic metal strip.
The adjusting part comprises an adjusting part body, a rotating shaft arranged on the adjusting part body and a fixed sleeve arranged on the fixed plate, and the rotating shaft is inserted in the fixed sleeve.
The adjusting parts are arranged in two at intervals.
The adjusting piece body adopts a hook-type metal block.
The adjusting handle is a cross-shaped handle.
The invention has the beneficial effects that: this device plays the supporting role to whole device through setting up the steady rest, dismantles the screw that needs to dismantle through setting up the clamping part. The adjusting sleeve arranged in the device is used for adjusting the clamping force of the clamping part. The adjusting handle is installed at the end of the adjusting sleeve far away from the threaded pipe, so that the medical staff can reduce the strength of exertion. The stabilizing frame comprises a fixing plate and a support for supporting the fixing plate, at least two jacks are formed in the fixing plate, the adjusting sleeves penetrate through the jacks, the jacks corresponding to the adjusting sleeves are selected according to actual positions of the screws, and the number of the inserted adjusting sleeves can be selected according to the number of the screws, so that the screws can be detached simultaneously. This device still is provided with the regulating plate in the interval position department of fixed plate, adjusting sleeve also cartridge regulating plate in cartridge fixed plate, the fixed plate on be provided with the regulation the regulating part of distance between fixed plate and the regulating plate. The adjusting piece is used for assisting medical staff to unload the screw, so that the labor intensity of the medical staff is reduced, and the screw unloading efficiency is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural view of an embodiment of a screw extractor for use in removing a bone fixation device in accordance with the present invention;
FIG. 2 is a schematic structural view of the clamping portion of FIG. 1;
FIG. 3 is a schematic structural view of the fixing plate of FIG. 1;
FIG. 4 is a schematic structural view of a second embodiment of a screw extractor for use in removing a bone fixation device in accordance with the present invention;
FIG. 5 is a schematic structural view of a third embodiment of a screw extractor for use in removing a bone fixation device in accordance with the present invention;
FIG. 6 is a top view of FIG. 5;
in the figure: 1. a clamping portion; 2. a holder body; 21. an arc-shaped stabilizing piece; 3. a threaded pipe; 4. adjusting the sleeve; 5. a fixing plate; 6. a stabilizer frame; 7. a segment body; 71. a rotating shaft; 8. fixing the sleeve; 9. an adjusting plate; 10. an adjusting handle; 11. and (4) inserting the jack.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The first embodiment of the screw extractor for disassembling the bone fixation instrument of the invention is shown in fig. 1 to 3, and comprises a stabilizing frame 6, a clamping part 1 and an adjusting sleeve 4 connected with the clamping part, wherein the clamping part 1 comprises a clamping piece and an arc-shaped stable piece 21 arranged at the port of the clamping piece, the clamping piece comprises a horn-shaped clamping piece body 2 and a threaded pipe 3 arranged at the tail part of the clamping piece, the adjusting sleeve 4 is sleeved on the threaded pipe 3, the stabilizing frame comprises a fixing plate 5 and a bracket 6 for supporting the fixing plate, at least two insertion holes 11 are arranged on the fixing plate 5, the adjusting sleeve 4 is inserted in the insertion holes 11, adjusting plates 9 are arranged at intervals on the fixing plate 5, through holes are arranged on the adjusting plates 9, the adjusting sleeve 4 is inserted in the through holes, an adjusting handle 10 is arranged at one end of the adjusting sleeve 4 far away from the threaded pipe 3; the fixed plate 5 is provided with an adjusting piece for adjusting the position between the fixed plate 5 and the adjusting plate 9.
This device plays the supporting role to whole device through setting up the steady rest, dismantles the screw that needs to dismantle through setting up the clamping part. The adjusting sleeve arranged in the device is used for adjusting the clamping force of the clamping part. The adjusting handle is installed at the end of the adjusting sleeve far away from the threaded pipe, so that the medical staff can reduce the strength of exertion.
The stabilizing frame comprises a fixing plate and a support for supporting the fixing plate, at least two jacks are formed in the fixing plate, the adjusting sleeves penetrate through the jacks, the jacks corresponding to the adjusting sleeves are selected according to actual positions of the screws, and the number of the inserted adjusting sleeves can be selected according to the number of the screws, so that the screws can be detached simultaneously. This device still is provided with the regulating plate in the interval position department of fixed plate, adjusting sleeve also cartridge regulating plate in cartridge fixed plate, the fixed plate on be provided with the regulation the regulating part of distance between fixed plate and the regulating plate. The medical staff is assisted in unloading the screws by means of the adjusting piece.
Preferably, the outer side of the clamping piece body 2 is provided with threads, and the clamping piece body 2 is made of an elastic metal strip.
Preferably, the adjusting member comprises an adjusting member body 7, a rotating shaft 71 arranged on the adjusting member body, and a fixing sleeve 8 arranged on the fixing plate, wherein the rotating shaft 71 is inserted into the fixing sleeve 8.
Preferably, two regulating members are arranged at intervals.
Preferably, the adjusting piece body 7 is made of a butt hook type metal block.
Preferably, the adjustment handle 10 is a cross-shaped handle.
The invention has the beneficial effects that: this device plays the supporting role to whole device through setting up the steady rest, dismantles the screw that needs to dismantle through setting up the clamping part. The adjusting sleeve arranged in the device is used for adjusting the clamping force of the clamping part. The adjusting handle is installed at the end of the adjusting sleeve far away from the threaded pipe, so that the medical staff can reduce the strength of exertion. The stabilizing frame comprises a fixing plate and a support for supporting the fixing plate, at least two jacks are formed in the fixing plate, the adjusting sleeves penetrate through the jacks, the jacks corresponding to the adjusting sleeves are selected according to actual positions of the screws, and the number of the inserted adjusting sleeves can be selected according to the number of the screws, so that the screws can be detached simultaneously. This device still is provided with the regulating plate in the interval position department of fixed plate, adjusting sleeve also cartridge regulating plate in cartridge fixed plate, the fixed plate on be provided with the regulation the regulating part of distance between fixed plate and the regulating plate. The medical staff is assisted in unloading the screws by means of the adjusting piece.
A second embodiment of the screw extractor for removing a bone fixation device of the present invention is shown in fig. 4: in this technical scheme, the cartridge has two adjusting sleeve 4 on the fixed plate 5, dismantles two screws simultaneously.
In the present technique, the axis of the fixing sleeve 8 is parallel to the transverse axis of the fixing plate 5. The other technical scheme is the same as the first embodiment.
A third embodiment of the screw extractor for removing a bone fixation device of the present invention is shown in fig. 5 and 6: in the technical scheme, the axis of the fixed sleeve 8 is parallel to the vertical axis of the fixed plate 5. The other technical scheme is the same as the first embodiment.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (6)
1. The utility model provides a dismantle screw extractor for bone fixation device which characterized in that: the clamping part comprises a clamping part and an arc-shaped stable part arranged at a port of the clamping part, the clamping part comprises a horn-shaped clamping part body and a threaded pipe arranged at the tail part of the clamping part, the adjusting sleeve is sleeved on the threaded pipe, the stabilizing frame comprises a fixed plate and a support for supporting the fixed plate, at least two jacks are formed in the fixed plate, the adjusting sleeve is inserted into the jacks, adjusting plates are arranged at intervals on the fixed plate, through holes are formed in the adjusting plates, the adjusting sleeve is inserted into the through holes, and an adjusting handle is arranged at one end, far away from the threaded pipe, of the adjusting sleeve; the fixed plate is provided with an adjusting piece for adjusting the distance between the fixed plate and the adjusting plate.
2. A screw extractor for removing a bone fixation device as recited in claim 1, further comprising: the clamping piece body outside be provided with the screw thread, the clamping piece body adopt elastic metal strip.
3. A screw extractor for removing a bone fixation device as recited in claim 1, further comprising: the adjusting part comprises an adjusting part body, a rotating shaft arranged on the adjusting part body and a fixed sleeve arranged on the fixed plate, and the rotating shaft is inserted in the fixed sleeve.
4. A screw extractor for removing a bone fixation device as recited in claim 3, further comprising: the adjusting parts are arranged in two at intervals.
5. A screw extractor for removing a bone fixation device as recited in claim 4, further comprising: the adjusting piece body adopts a hook-type metal block.
6. A screw extractor for removing a bone fixation device as recited in claim 1, further comprising: the adjusting handle is a cross-shaped handle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910615345.0A CN110226964B (en) | 2019-07-09 | 2019-07-09 | Screw extractor for disassembling bone fixing instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910615345.0A CN110226964B (en) | 2019-07-09 | 2019-07-09 | Screw extractor for disassembling bone fixing instrument |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110226964A CN110226964A (en) | 2019-09-13 |
| CN110226964B true CN110226964B (en) | 2020-09-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910615345.0A Active CN110226964B (en) | 2019-07-09 | 2019-07-09 | Screw extractor for disassembling bone fixing instrument |
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Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8075579B2 (en) * | 2008-01-17 | 2011-12-13 | Life Spine, Inc. | Pedicle dart system |
| US20100087831A1 (en) * | 2008-10-07 | 2010-04-08 | Donald Marx | Knee replacement nail remover |
| CN206198034U (en) * | 2016-07-12 | 2017-05-31 | 南京卓策知识产权服务有限公司 | A kind of nail taking out apparatus in orthopaedics |
| CN206333960U (en) * | 2016-10-13 | 2017-07-18 | 赵福亭 | A kind of extractor for bone-pin |
| CN106511019A (en) * | 2016-12-14 | 2017-03-22 | 合肥工业大学 | Power-assisting device for incarcerated intramedullary nail removal operation |
| CN106624757B (en) * | 2016-12-29 | 2019-02-22 | 青岛海泰新光科技股份有限公司 | A kind of device being able to achieve more screws while installation and adjustment |
| CN207152646U (en) * | 2017-03-08 | 2018-03-30 | 孙正明 | A kind of safe and reliable Orthopeadic Surgery device for fetching nail |
| CN208741130U (en) * | 2018-01-19 | 2019-04-16 | 叶茂 | A kind of orthopaedics quickly positions device for fetching nail |
| CN108703801B (en) * | 2018-06-15 | 2019-11-12 | 中国人民解放军陆军军医大学第一附属医院 | A kind of percutaneous positioning minimally invasive internal fixation steel plate screw withdrawing device of orthopaedics |
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- 2019-07-09 CN CN201910615345.0A patent/CN110226964B/en active Active
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| CN110226964A (en) | 2019-09-13 |
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