CN201418780Y - Broken nail extractor of pedicle of vertebral arch - Google Patents
Broken nail extractor of pedicle of vertebral arch Download PDFInfo
- Publication number
- CN201418780Y CN201418780Y CN2009201718080U CN200920171808U CN201418780Y CN 201418780 Y CN201418780 Y CN 201418780Y CN 2009201718080 U CN2009201718080 U CN 2009201718080U CN 200920171808 U CN200920171808 U CN 200920171808U CN 201418780 Y CN201418780 Y CN 201418780Y
- Authority
- CN
- China
- Prior art keywords
- inner core
- broken nail
- pedicle
- sleeve
- taking out
- 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
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Abstract
The utility model discloses a broken nail extractor of a pedicle of a vertebral arch, which comprises a sleeve barrel, an inner core and a lifting mechanism which is connected with the inner core, wherein the sleeve barrel comprises a lower horn contraction segment and a straight pipe segment which is provided with inner screw threads, the horn contraction segment comprises more than three take-uppieces, an opening groove is arranged between each take-up pieces, the inner diameter of the horn contraction segment of the sleeve barrel corresponds to the diameter of a broken nail, the inner coreis provided with an outer screw thread which is matched with the straight pipe segment of the sleeve barrel, and the lifting mechanism comprises a handle which is connected with the inner core through screw threads and a nut which is arranged on the upper portion of the handle and is matched with the inner core. The broken nail extractor of the pedicle of the vertebral arch has convenient use after adopting the structure, does not need to take out a great amount of substance of bone when taking nails, and uses short time for taking nails, thereby preventing broken nails from being left in human bodies and bringing discomfort to patients.
Description
Technical field
This utility model relates to medical apparatus and instruments, relates in particular to a kind of pedicle screws device for taking out broken nail.
Background technology
Need to use pedicle screws in the spinal surgery, pedicle screws in use, because the effect of stress is often ruptured, broken nail is embedded in the bone, device for taking out broken nail commonly used at present need take out a large amount of sclerotin and could take out broken nail, and the time of taking out broken nail is longer, and all is human body important structure such as blood vessel, nerve around the broken nail, do not allow to do like this, therefore have only broken nail is stayed in the patient body.
The utility model content
Technical problem to be solved in the utility model is: a kind of pedicle screws device for taking out broken nail is provided, this kind pedicle screws device for taking out broken nail 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.
Solve this technical problem, the technical solution of the utility model is: a kind of pedicle screws device for taking out broken nail, it is made up of sleeve, inner core and the hoisting mechanism that is connected with inner core, described sleeve is made up of with the straight length with female thread the loudspeaker contraction section of bottom, the loudspeaker contraction section is made up of the sheet that tightens up more than three, each tightens up all has open slot between the sheet, the diameter of described telescopic loudspeaker contraction section internal diameter and disconnected screw adapts, and described inner core has the external screw thread that cooperates with telescopic straight length.
Described hoisting mechanism comprises the handle that is threaded with inner core and is positioned at the nut adaptive with inner core of handle top.
The nut of described hoisting mechanism is a left-handed nut.
The quantity of tightening up sheet of described telescopic loudspeaker contraction section is four.
A kind of pedicle screws device for taking out broken nail 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, thus the discomfort of having avoided broken nail stream in the patient body, to bring to patient.
Description of drawings
Below in conjunction with accompanying drawing a kind of pedicle screws device for taking out broken nail of this utility model is done explanation in further detail:
Fig. 1 is the structural representation of a kind of pedicle screws device for taking out broken nail of this utility model;
In Fig. 1,1, the hands handle; 2, sleeve; 3, inner core; 4, left-handed nut; 5, tighten up sheet; 6, open slot.
The specific embodiment
As shown in Figure 1, a kind of pedicle screws device for taking out broken nail, by sleeve 2, inner core 3 is formed with the hoisting mechanism that is connected with inner core 3, described sleeve 2 is made up of with the straight length with female thread the loudspeaker contraction section of bottom, the loudspeaker contraction section tightens up sheet 5 by four and forms, each tightens up all has open slot 6 between the sheet 5, the loudspeaker contraction section internal diameter of sleeve 2 and the diameter of disconnected screw adapt, described inner core 3 has the sinistral external thread that cooperates with the straight length of sleeve 2, and hoisting mechanism comprises handle 1 that is threaded with inner core 3 and the left-handed nut 4 adaptive with inner core that is positioned at handle 1 top.
During use, the medical worker gets out the space around being drilled in disconnected screw with the internal diameter cavity ring identical with the pedicle screws external diameter, the loudspeaker section of the inner core of pedicle screws device for taking out broken nail is inserted in disconnected screw, again with jacket casing on inner core, the degree of depth will surpass the diameter of disconnected screw, screw in nut on inner core, will carry on the inner core, sleeve presses down.The loudspeaker section of inner core is because telescopic banding produces the mechanical swelling effect, make the loudspeaker section of sleeve, inner core and disconnected screw tightly obvolvent fix, rotary handle can will be stayed the intravital disconnected screw of patient and take out, a kind of pedicle screws device for taking out broken nail of this utility model is easy to use, 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.
Claims (4)
1, a kind of pedicle screws device for taking out broken nail, it is characterized in that: it is made up of sleeve (2), inner core (3) and the hoisting mechanism that is connected with inner core (3), described sleeve (2) is made up of with the straight length with female thread the loudspeaker contraction section of bottom, the loudspeaker contraction section is made up of the sheet (5) that tightens up more than three, each tightens up all has open slot (6) between the sheet (5), the loudspeaker contraction section internal diameter of described sleeve (2) and the diameter of disconnected screw adapt, and described inner core (3) has the external screw thread that cooperates with the straight length of sleeve (2).
2, a kind of pedicle screws device for taking out broken nail according to claim 1 is characterized in that: described hoisting mechanism comprises the handle (1) that is threaded with inner core (3) and is positioned at the nut adaptive with inner core of handle (1) top.
3, a kind of pedicle screws device for taking out broken nail according to claim 2 is characterized in that: the nut of described hoisting mechanism is left-handed nut (4).
4, according to claim 1 or 2 or 3 described a kind of pedicle screws device for taking out broken nail, it is characterized in that: the quantity of tightening up sheet (3) of the loudspeaker contraction section of described sleeve (2) is four.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201718080U CN201418780Y (en) | 2009-04-29 | 2009-04-29 | Broken nail extractor of pedicle of vertebral arch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201718080U CN201418780Y (en) | 2009-04-29 | 2009-04-29 | Broken nail extractor of pedicle of vertebral arch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201418780Y true CN201418780Y (en) | 2010-03-10 |
Family
ID=41805424
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201718080U Expired - Fee Related CN201418780Y (en) | 2009-04-29 | 2009-04-29 | Broken nail extractor of pedicle of vertebral arch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201418780Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109247981A (en) * | 2017-07-13 | 2019-01-22 | 香港大学 | Suitable for removing the removal equipment of bone implant terminal part from bone tissue |
-
2009
- 2009-04-29 CN CN2009201718080U patent/CN201418780Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109247981A (en) * | 2017-07-13 | 2019-01-22 | 香港大学 | Suitable for removing the removal equipment of bone implant terminal part from bone tissue |
| CN109247981B (en) * | 2017-07-13 | 2023-10-31 | 香港大学 | Extraction instrument adapted to remove a distal portion of a bone implant from bone tissue |
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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: 20100310 Termination date: 20100429 |