CN202801780U - Broken screw trepanation device - Google Patents
Broken screw trepanation device Download PDFInfo
- Publication number
- CN202801780U CN202801780U CN 201220238329 CN201220238329U CN202801780U CN 202801780 U CN202801780 U CN 202801780U CN 201220238329 CN201220238329 CN 201220238329 CN 201220238329 U CN201220238329 U CN 201220238329U CN 202801780 U CN202801780 U CN 202801780U
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- trepan
- handle
- broken nail
- screw
- montant
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Abstract
The utility model relates to a medical appliance, in particular to a broken screw trepanation device for an orthopedics department, more particularly to a broken screw trepanation device for pedicle screws. The broken screw trepanation device comprises a handle, a vertical rod and a trephine, and is characterized in that a front-end round opening of the trephine is in a sawtooth shape; the middle end of the handle is matched and connected with the vertical rod; a square hole is formed in the front-end round opening of the trephine; the vertical rod and the trephine form a whole body; the vertical rod is movably connected with the handle through a groove opening; and the diameter of the front-end round opening of the trephine is 58 mm, 68 mm or 78 mm. The broken screw trepanation device adopting the structure is convenient to use; and a large amount of bone substances do not need to be extracted in the screw extracting process, and the screw extracting time is short, so that a broken screw is prevented from being left in the body of a patient and bringing the psychological influence to the patient.
Description
Technical field
This utility model has related to a kind of medical apparatus and instruments, is specially adapted to a kind of orthopaedics broken nail withdrawing device, relates in particular to a kind of pedicle screw broken nail trepan device.
Background technology
At present at Orthopeadic Surgery, fracture patient constantly increases, the medical rate of fracture patient is very high, in in these fracture patients, treating, Therapeutic Method more effective and commonly used exactly to fracture dock reset after, owing to adopt screw fixing more firm, it is interior fixing mostly to adopt now the fixtures such as copper coin and screw to carry out, so curative effect is better.But, in the taking-up of orthopaedics inside-fixture and implantation surgery, often run into bone screw from nut and screw rod junction even apart from nut crack conditions at a distance, broken nail remains in the human body and can cause in various degree psychological shade to patient, therefore broken nail must be taken out.Because clinically, it is a very complicated thing that broken nail takes out, waste time and energy, it is time-consuming long, larger to bone destruction to get nail, and get again nail after needing steel plate to dismantle down fully, steel plate may need the position of remapping, and makes whole operation bring very large inconvenience, has increased the risk of iatrogenic refracture.In spinal surgery, need to use especially pedicle screws, pedicle screws in use, because the effect of stress is often ruptured, broken nail is embedded in the bone, at present device for taking out broken nail commonly used need to take out that sclerotin could take out broken nail when a large amount of, increased operating time, thereby caused patient's bleeding more, caused that the post-operative infection probability strengthens.In addition, after screw is being implanted sclerotin, owing to be subjected to the effect of bearing capacity, MSR power, no matter more increase the phenomenon that screw fractures, in this case, be in removing fixedly the time, or in interior fixing the replacement, all need to take out first the screw of fracture, just can carry out next step operation.At this moment, how successfully to take out the screw of fracture, and the unlikely too much destruction that causes sclerotin, to the orthopedist stern challenge has been proposed.Particularly broken nail occurs the time, because after the elongated things such as nail of nail lid are not pricked in human body, because these elongated things do not have can be for the position of clamping, existing medical apparatus and instruments is difficult to fast with its taking-up, often needing to carry out larger operation could take out, but because broken nail is positioned at skeleton, the soft tissues such as muscle are arranged again on every side, exposed space is limited, apparatus commonly used such as vice or needle-nose pliers etc. reach more greatly the limited and very difficult effective clamping broken nail screw rod of hold because of the nip part profile again, increased the taking-up difficulty, allowed fracture patient stand extraly a lot of miseries.And because the thickness of nail is different, it is not identical to take out its medical apparatus and instruments that needs yet, and is applicable to take out different types of broken nail without any a kind of medical apparatus and instruments in the prior art.
Summary of the invention
Technical problem to be solved in the utility model is: a kind of pedicle screws broken nail trepan device is provided, this kind broken nail extractor of pedicle of vertebral arch need not take out a large amount of sclerotin when getting nail, get nail time weak point, thus the discomfort of having avoided broken nail stream in the patient body, to bring to patient.
Technical problem to be solved in the utility model is achieved by the following technical solution: broken nail trepan device of the present utility model, consisted of by handle, montant and trepan, the front end round mouth indentation of trepan, the middle-end place of handle is connected with the montant coupling, the front end round mouth top of trepan is provided with the square hole, it is characterized in that described montant and described trepan consist of an integral body, described montant is flexibly connected by notch and handle, and the diameter of the front end round mouth of described trepan is 58 millimeters or 68 millimeters or 78 millimeters.
Described montant of the present utility model upper part is solid, and the described trepan in lower end is hollow shape.Described trepan hollow shape place, described lower end has 15mm * 3mm rectangle through hole.
Described montant upper top of the present utility model and described handle are flexibly connected notch each other four jiaos or hexagonal or octagon.Described montant upper top and described handle are flexibly connected also each other screw thread flexible connection of notch.
Described handle of the present utility model is cannula-like, and the middle-end place is connected with described montant coupling in the sleeve pipe.
A kind of broken nail extractor of pedicle of vertebral arch of this utility model adopts such structure, and is easy to use, need not take out a large amount of sclerotin when getting nail, gets nail time weak point, affects to outpatients mental state thereby avoided broken nail to stay in the patient body.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is montant of the present utility model and trepan structural representation in aggregates.
The specific embodiment
Below in conjunction with description of drawings this utility model is described in further detail: such as Fig. 1, shown in Figure 2, broken nail trepan device of the present utility model, by handle 1, the parts such as montant 2 and trepan 3 consist of, the 5 indention shapes of round mouth foremost of trepan 3, the middle-end place of handle 1 consists of match activities with montant 2 and is connected, the place, top of the front end round mouth 5 of trepan 3 is provided with square hole 4, described montant 2 of the present utility model and described trepan 3 can consist of an integral body, described montant 2 is flexibly connected by notch and the handle 1 of handle 1, its movable connection method is four jiaos or hexagonal or octagon running-on 6 each other, 7 are flexibly connected, and also screw thread is flexibly connected each other.Because this utility model adopts movable connection method, the diameter of the front end round mouth of described trepan 3 can be selected respectively the different situations of 58 millimeters or 68 millimeters or 78 millimeters, therefore, this utility model can be selected respectively the diameter of the front end round mouth of different trepan 3 according to different broken nail diameters.Specifically, the trepan 3 that this utility model broken nail trepan device arranges at the front port of montant 2 is so that hole to the sclerotin at fracture screw place.The diameter of trepan 3 need to be slightly larger than the diameter of broken nail, bores sky with the sclerotin that guarantees broken nail position week is made a circle, and after the sclerotin that broken nail position week is made a circle bores sky, can take out smoothly broken nail.Because when sclerotin is holed, may have the materials such as blood, bone marrow and overflow, at this moment, the materials such as the blood that overflows, bone marrow can be discharged by the hole slot in the square hole 4 that arranges above the front end round mouth of trepan.Described montant of the present utility model 2 upper parts are solid, and the lower end is hollow shape.Hollow shape place, lower end described in the utility model has 15mm * 3mm rectangle through hole, so that the materials such as the blood that overflows, bone marrow can be discharged by the hole slot in the square hole 4 that arranges above the front end round mouth of trepan.Of the present utility model simple in structure, easy to operate, can take out quickly and easily the screw that fractures.
Although feature of the present utility model and advantage thereof have been described a lot; yet be understandable that; for the person of ordinary skill of the art; can make other a lot of corresponding changes according to the technical solution of the utility model and technical though, and all these change the scope that all should belong to claim protection of the present utility model.
Claims (6)
1. broken nail trepan device, consisted of by handle, montant and trepan, the front end round mouth indentation of trepan, the middle-end place of handle is connected with the montant coupling, the front end round mouth top of trepan is provided with the square hole, it is characterized in that described montant and described trepan consist of an integral body, described montant is flexibly connected by notch and handle, and the diameter of the front end round mouth of described trepan is 58 millimeters or 68 millimeters or 78 millimeters.
2. broken nail trepan device according to claim 1 is characterized in that described montant upper part is solid, and the described trepan in lower end is hollow shape.
3. broken nail trepan device according to claim 1 and 2 is characterized in that described trepan hollow shape place, described lower end has 15mm * 3mm rectangle through hole.
4. broken nail trepan device according to claim 1 and 2 is characterized in that described montant upper top and described handle are flexibly connected notch each other four jiaos or hexagonal or octagon.
5. broken nail trepan device according to claim 1 and 2 is characterized in that described montant upper top and described handle are flexibly connected each other screw thread flexible connection of notch.
6. broken nail trepan device according to claim 1 is characterized in that described handle is cannula-like, and the middle-end place is connected with described montant coupling in the sleeve pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220238329 CN202801780U (en) | 2012-05-16 | 2012-05-16 | Broken screw trepanation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220238329 CN202801780U (en) | 2012-05-16 | 2012-05-16 | Broken screw trepanation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202801780U true CN202801780U (en) | 2013-03-20 |
Family
ID=47860728
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220238329 Expired - Fee Related CN202801780U (en) | 2012-05-16 | 2012-05-16 | Broken screw trepanation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202801780U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105708517A (en) * | 2016-04-19 | 2016-06-29 | 苏州瑞华医院有限公司 | Hollow trephine provided with push rod |
| CN109276307A (en) * | 2018-12-04 | 2019-01-29 | 吴峣 | A kind of neck pedicle of vertebral arch broken nail withdrawing device |
| CN115530957A (en) * | 2022-09-29 | 2022-12-30 | 任晓春 | Elastic intramedullary needle closing extractor |
-
2012
- 2012-05-16 CN CN 201220238329 patent/CN202801780U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105708517A (en) * | 2016-04-19 | 2016-06-29 | 苏州瑞华医院有限公司 | Hollow trephine provided with push rod |
| CN109276307A (en) * | 2018-12-04 | 2019-01-29 | 吴峣 | A kind of neck pedicle of vertebral arch broken nail withdrawing device |
| CN115530957A (en) * | 2022-09-29 | 2022-12-30 | 任晓春 | Elastic intramedullary needle closing extractor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130320 Termination date: 20140516 |