CN202078392U - Chute screw extractor - Google Patents
Chute screw extractor Download PDFInfo
- Publication number
- CN202078392U CN202078392U CN2011201406423U CN201120140642U CN202078392U CN 202078392 U CN202078392 U CN 202078392U CN 2011201406423 U CN2011201406423 U CN 2011201406423U CN 201120140642 U CN201120140642 U CN 201120140642U CN 202078392 U CN202078392 U CN 202078392U
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- China
- Prior art keywords
- extractor
- screw
- guide pin
- separator
- hollow
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- Expired - Fee Related
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Abstract
The utility model provides a chute screw extractor clinically used for orthopedics department. The extractor comprises a steel plate screw separator and a screw extractor; the steel plate screw separator is a hollow drill bit or a solid drill bit, wherein a separator guide pin is held in the hollow part of the hollow drill bit, and the front end of the separator guide pin is internally hexangular; and the screw extractor is a hollow drill bit or a pipe wrench, wherein another extractor guide pin is held in the hollow part of the hollow drill bit, a round concave platform is arranged at the front end of the extractor guide pin, and internal threads are formed on the inner wall of the concave platform. The chute screw extractor provided by the utility model has a simple structure, and a chute screw in a removal surgery for internal fixation can be taken out conveniently, so that the purposes of saving the surgery time, reducing medical tangles and decreasing the infection occurring rate can be achieved, and removal surgeries for internal fixation in the orthopedics department can be guaranteed.
Description
Technical field
This utility model relates to a kind of medical apparatus and instruments, specifically is a kind of orthopaedics internal fixation removal equipment, and it is clinical to be applied to orthopaedics.
Background technology
Orthopaedics is when internal fixation takes out clinically, and the situation through regular meeting runs into the screw chute causes inside-fixture to take out the problem that difficulty maybe can't be taken out.When especially steel plate screw internal fixation postoperative patient internal fixation takes out, often 1 to 2 piece of screw chute causes inside-fixture to take out difficulty maybe can't to take out, and causes inside-fixture residual and cause operative failure, has prolonged operating time, increase the probability that infects, be easy to generate medical tangle.
We design chute screw extractor at the situation of screw chute, have extensive, the practical advantage of clinical practice, are one of indispensable internal fixation removal equipments of a kind of orthopaedics.
Summary of the invention
The purpose of this utility model provides a kind of chute screw extractor easy to use, simple in structure.
For achieving the above object, the technical solution adopted in the utility model is: a kind of chute screw extractor, comprise steel plate screw separator and screw extractor, described steel plate screw separator is hollow boring bit or solid bit, hollow parts in the hollow boring bit is equipped with the separator guide pin, and separator guide pin front end is interior hexagonal.
During use, utilize the steel plate screw separator that screw nut is separated with steel plate, reuse screw extractor takes out screw nut.When using hollow boring bit, hollow boring bit diameter and nut diameter adapt, and drill steel plate with hollow boring bit, and the interior hexagonal of the separator guide pin front end on the hollow boring bit is blocked nut, for taking out the screw nut navigation, screw nut are separated with steel plate.When using solid bit, bore broken nut, steel plate is separated with screw with solid bit.The screw extractor can adopt multiple mode, and is first-class as pincers, tweezers, core drill.
As a kind of optimized technical scheme, described screw extractor is a hollow boring bit, and the hollow parts of hollow boring bit is equipped with the extractor guide pin, and the front end of extractor guide pin is provided with circular concave station, and the concave station inwall is provided with female thread.Female thread on the extractor guide pin concave station inwall cooperates with screw thread to be got, and the extractor guide pin is combined with screw nut, by the extractor guide pin screw nut is taken out.
As another kind of optimized technical scheme, described screw extractor is a pipe wrench, and the jaw of pipe wrench is provided with vertical shape screw thread, 90 °-135 ° of the middle part bendings of pipe wrench handle.Block and the isolating screw nut of steel plate with jaw, can take out, handle middle part bending can reduce stopping surgical field of view.
Chute screw extractor described in the utility model, simple in structure, can take out the chute screw in the internal fixation removal surgery easily, reached the saving operating time, reduce medical tangle, reduce the purpose of infection rate, for orthopaedics internal fixation removal surgery escorts.
Description of drawings
Fig. 1 is the hollow boring bit of steel plate screw separator.
Fig. 2 is the separator guide pin.
Fig. 3 is the left view of Fig. 2.
Fig. 4 is the solid bit of steel plate screw separator.
Fig. 5 is the hollow boring bit of screw extractor.
Fig. 6 is the extractor guide pin.
Fig. 7 is the left view of Fig. 6.
Fig. 8 is a pipe wrench.
Among the figure, 1-separator guide pin, 2-extractor guide pin, 3-jaw, 4-handle.
The specific embodiment
Below in conjunction with accompanying drawing this utility model is done and to be specified.
A kind of chute screw extractor described in the utility model, comprise steel plate screw separator and screw extractor, described steel plate screw separator is hollow boring bit or solid bit, hollow parts in the hollow boring bit (Fig. 1) is equipped with separator guide pin 1, separator guide pin 1(Fig. 2,3) front end is interior hexagonal.The diameter of the hollow parts of hollow boring bit is 8mm, 6mm, 5mm, 4mm, 3mm, is complementary with the different size screw nut.The diameter of hexagonal is 6.5mm, 4.5mm, 4.0mm, 3.5mm, 2.7mm, 2.0mm, 1.5mm in separator guide pin 1 front end, and is supporting with corresponding screw thread; The diameter of guide pin is 8mm, 6mm, 5mm, 4mm, 3mm, and is supporting with hollow boring bit.The hollow boring bit front end is provided with known elastic metallic debris collector, and catcher is provided with dregs guiding groove.Solid bit (Fig. 4) point diameter is 8mm, 6mm, 5mm, 4mm, 3mm, has the screw thread that is complementary with the different size screw nut, is provided with the elastic metallic debris collector, and catcher is provided with dregs guiding groove; The screw rod of solid bit rear end and common medical drill bit are as good as.
Described screw extractor is hollow boring bit (Fig. 5), and the hollow parts of hollow boring bit is equipped with extractor guide pin 2(Fig. 6,7), the front end of extractor guide pin 2 is provided with circular concave station, and the concave station inwall is provided with female thread.The diameter of hollow boring bit hollow parts is 6.5mm, 4.5mm, 4.0mm, 3.5mm, 2.7mm, 2.0mm, 1.5mm, and is supporting with corresponding screw thread; Concave station diameter on the extractor guide pin 2 also is 6.5mm, 4.5mm, 4.0mm, 3.5mm, 2.7mm, 2.0mm, 1.5mm, and is supporting with corresponding screw thread.
As shown in Figure 8, described screw extractor is a pipe wrench, and the jaw 3 of pipe wrench is provided with vertical shape screw thread, the middle part bending of pipe wrench handle 4, and bending angle a is 90 °-135 °.Jaw 3 parts can be held lug tight and be made it smooth taking-up.
Claims (3)
1. chute screw extractor, it is characterized in that: comprise steel plate screw separator and screw extractor, described steel plate screw separator is hollow boring bit or solid bit, and the hollow parts in the hollow boring bit is equipped with separator guide pin (1), and separator guide pin (1) front end is interior hexagonal.
2. chute screw extractor according to claim 1, it is characterized in that: described screw extractor is a hollow boring bit, the hollow parts of hollow boring bit is equipped with extractor guide pin (2), and the front end of extractor guide pin (2) is provided with circular concave station, and the concave station inwall is provided with female thread.
3. chute screw extractor according to claim 1 is characterized in that: described screw extractor is a pipe wrench, and the jaw of pipe wrench (3) is provided with vertical shape screw thread, 90 °-135 ° of the middle part bendings of pipe wrench handle (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201406423U CN202078392U (en) | 2011-05-06 | 2011-05-06 | Chute screw extractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201406423U CN202078392U (en) | 2011-05-06 | 2011-05-06 | Chute screw extractor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202078392U true CN202078392U (en) | 2011-12-21 |
Family
ID=45339051
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201406423U Expired - Fee Related CN202078392U (en) | 2011-05-06 | 2011-05-06 | Chute screw extractor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202078392U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109247983A (en) * | 2018-09-20 | 2019-01-22 | 史迎春 | A kind of jaw type Multifunctional elastic intramedullary needle fastener driving device |
-
2011
- 2011-05-06 CN CN2011201406423U patent/CN202078392U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109247983A (en) * | 2018-09-20 | 2019-01-22 | 史迎春 | A kind of jaw type Multifunctional elastic intramedullary needle fastener driving device |
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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: 20111221 Termination date: 20120506 |