CN201790889U - Medical extractor for thread-stripping screws - Google Patents
Medical extractor for thread-stripping screws Download PDFInfo
- Publication number
- CN201790889U CN201790889U CN2010202762064U CN201020276206U CN201790889U CN 201790889 U CN201790889 U CN 201790889U CN 2010202762064 U CN2010202762064 U CN 2010202762064U CN 201020276206 U CN201020276206 U CN 201020276206U CN 201790889 U CN201790889 U CN 201790889U
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- CN
- China
- Prior art keywords
- hexagon
- thread
- handle
- pulling head
- extractor
- 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 medical extractor for thread-stripping screws. The extractor mainly comprises a handle and a pulling rod mounted on the handle; a hexagon pulling head is arranged at the tail end of the pulling rod, a linear slot or a cross slot is formed on the hexagon pulling head, and the hexagon pulling head adopts a memory alloy pulling head. When the hexagon pulling head is inserted into the internal hexagon of a thread-stripping screw, the memory alloy splits towards two sides due to human body temperature, so as to enlarge torque force, and the internal hexagonal thread-stripping screw can be extracted through turning the handle, thereby avoiding secondary injury of fracture area, protecting radical vessel and nerve tissues and alleviating pain of patients.
Description
Technical field
This utility model relates to a kind of medical appliance accessory, relates in particular to the medical slipped screws extractor that a kind of synthetism steel plate is used.
Background technology
Need internal fixation is taken out after the fixing fracture of orthopaedics using steel plate screw, because present screw is generally interior six sides, the easy stripped thread of misoperation causes taking out the screw difficulty, and internal fixation is difficult to take out.Now the method for taking-up slipped screws commonly used has two kinds substantially, a kind ofly takes out screw then for destroying the sclerotin around the screw, causes fracture to take place once more easily and damages important vessel, nervous tissue.Another kind takes out the screw steel plate together for steel plate is blocked, owing to block the steel plate relatively difficulty and the generation once more that causes fracturing, and the prolongation operating time, increase operation risk.
The utility model content
In view of this, the purpose of this utility model provides a kind of medical slipped screws extractor, can easily the SOC.HD. cap screw of stripped thread easily be taken out, and avoids the patient is caused the secondary injury, alleviates the patient suffering.
The technical solution of the utility model realizes with following method, a kind of medical slipped screws extractor, and it mainly comprises handle, is installed in the dead man on the handle, and wherein, the dead man end is provided with hexagon and pulls out head, and hexagon is pulled out head and is provided with groove.
Groove is yi word pattern groove or cross groove.
Hexagon is pulled out head and is pulled out head for memorial alloy.
The good effect of technical solutions of the utility model is:
After this utility model pulls out interior six sides of head insertion slipped screws with hexagon; owing to be subjected to the influence of human body temperature; the memorial alloy post separates to both sides; to increase torsion; the turn handle can take out the SOC.HD. cap screw of stripped thread, has protected the position of fracture to avoid secondary damage; protect important vessel, nervous tissue, alleviated patient's misery.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is for pulling out the header structure sketch map among the embodiment one.
Fig. 3 is for pulling out the header structure sketch map among the embodiment two.
The specific embodiment
Below in conjunction with drawings and Examples this utility model is further specified.
Embodiment one,
As seen from Figure 1, a kind of medical slipped screws extractor, it mainly comprises handle 1, is fixedly mounted on the dead man 2 on the handle 1, wherein, dead man 2 ends are provided with hexagon and pull out 3.
As seen from Figure 2, hexagon pulls out that shaft position is provided with cross groove 5 in 3, and hexagon is pulled out 3 be divided into 4 half, and symmetrical tetragon memorial alloy post.
Embodiment two,
As seen from Figure 3, hexagon pulls out that shaft position can also be provided with yi word pattern groove 4 in 3, and hexagon is pulled out 3 for a dimidiation, and symmetrical tetragon memorial alloy post.
With embodiment two is example, pull out 3 and pull out head for six sides in form by the symmetrical tetragon memorial alloy of two halves post, see it is normal interior six side's screwdrivers from the side, after pulling out interior six side of 3 insertion slipped screws, owing to be subjected to the influence of human body temperature, the memorial alloy post separates to both sides, the frictional force of memorial alloy post in slipped screws will be increased, thereby increase torsion, the turn handle can take out SOC.HD. cap screw in patient's body then.
Claims (3)
1. medical slipped screws extractor, it mainly comprises handle (1), is installed in the dead man (2) on the handle (1), it is characterized in that: dead man (2) end is provided with hexagon and pulls out head (3), and hexagon is pulled out head (3) and is provided with groove.
2. medical slipped screws extractor according to claim 1 is characterized in that: groove is yi word pattern groove (4) or cross groove (5).
3. medical slipped screws extractor according to claim 1 is characterized in that: described hexagon is pulled out head (3) and is pulled out head for memorial alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202762064U CN201790889U (en) | 2010-07-30 | 2010-07-30 | Medical extractor for thread-stripping screws |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202762064U CN201790889U (en) | 2010-07-30 | 2010-07-30 | Medical extractor for thread-stripping screws |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201790889U true CN201790889U (en) | 2011-04-13 |
Family
ID=43845809
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202762064U Expired - Fee Related CN201790889U (en) | 2010-07-30 | 2010-07-30 | Medical extractor for thread-stripping screws |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201790889U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107736930A (en) * | 2017-09-30 | 2018-02-27 | 谢安迪 | A kind of orthopedic instrument |
| CN117643496A (en) * | 2024-01-30 | 2024-03-05 | 中国人民解放军西部战区总医院 | Thoracolumbar spine individual nail placement device and use method thereof |
-
2010
- 2010-07-30 CN CN2010202762064U patent/CN201790889U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107736930A (en) * | 2017-09-30 | 2018-02-27 | 谢安迪 | A kind of orthopedic instrument |
| CN107736930B (en) * | 2017-09-30 | 2019-08-09 | 刘军 | A kind of orthopedic instrument |
| CN117643496A (en) * | 2024-01-30 | 2024-03-05 | 中国人民解放军西部战区总医院 | Thoracolumbar spine individual nail placement device and use method thereof |
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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: 20110413 Termination date: 20120730 |