CN204723168U - A kind of nail taking out apparatus in orthopaedics - Google Patents
A kind of nail taking out apparatus in orthopaedics Download PDFInfo
- Publication number
- CN204723168U CN204723168U CN201520165530.1U CN201520165530U CN204723168U CN 204723168 U CN204723168 U CN 204723168U CN 201520165530 U CN201520165530 U CN 201520165530U CN 204723168 U CN204723168 U CN 204723168U
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- China
- Prior art keywords
- nail
- screw
- screw thread
- orthopaedics
- steel plate
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Abstract
The utility model discloses a kind of nail taking out apparatus in orthopaedics, this device for fetching nail comprises screw steel plate separator, thread tapper and turnbarrel, and steel plate can be separated with screw by described screw steel plate separator; Described nail-fetching device, under the normal good working condition of screw, utilizes the turnbarrel of this nail-fetching device and fixture to take out; When there is broken nail, described thread tapper can attack anti-silk on broken nail post, and turnbarrel makes bone nail and sleeve wall combine closely, and utilizes power of oppositely back-outing to be back-outed by broken nail.Make screw no matter be can rapid and convenient take out in complete situation or in broken nail situation, alleviate patient suffering, and reduce health care expenditures, more greatly reduce the risk of second fracture.
Description
Technical field
This utility model relates to a kind of nail taking out apparatus in orthopaedics, belongs to technical field of medical instruments.
Background technology
Usually use screw fit steel plate to carry out internal fixtion to fracture site clinically, when getting steel plate and screw, because there is thread lock system between steel plate and screw, adding the problem of getting rusty, steel plate can not be removed smoothly, take out screw.The way of current employing first rubs nut with drill bit to take out steel plate fluting boring taking-up screw around screw again.This operating process adds wound, at fracture again wound, and very easily secondary fracture.And in time there is broken nail, now part doctor usually feels simply helpless, wantonly cutting sclerotin or getting into the cave causes osseous tissue defect too much, there is fracture or postoperative refracture in art, iatrogenic injury is caused to patient, increase the risk of infection and refracture, the Hospitalized costs of patient increases, and causes medical tangle.
Utility model content
For the above-mentioned problems in the prior art, this utility model provides a kind of simple to operate, safe and reliable, nail taking out apparatus in orthopaedics of alleviating patient suffering.
This utility model is achieved in that a kind of nail taking out apparatus in orthopaedics, comprises screw steel plate separator, thread tapper and sleeve of back-outing; Described screw steel plate separator comprises hollow boring bit (1), the hollow parts of described hollow boring bit (1) is equipped with locating core (13), and the front end of locating core (13) is provided with the first cross tongue (14).Described thread tapper is circular casing, and its front inner wall is provided with screw thread, in screw die columnar structure.Described screw thread is anti-silk screw thread, and described anti-silk screw thread is provided with porus excretorius sample hole slot.Described sleeve of back-outing is " scholar " font round buss, and its front end is provided with the screw thread identical with the front end of thread tapper anti-filament plate tooth shape screw thread.
The tail end of described sleeve of back-outing is provided with depth limiting pole, and described depth limiting pole can limit by screwing in length the degree of depth that broken nail enters sleeve.Also can regarding pressure rod as simultaneously, when taking out complete screw, playing hold-down screw effect.The tail end of described depth limiting pole has external screw thread and hands handle; Described sleeve tail end of back-outing: bottom is provided with the second cross tongue (12), and inwall is provided with positive silk screw thread, the external screw thread of described depth limiting pole tail end matches with described positive silk screw thread, described in the back-out tail end of sleeve be provided with rotary handle.
This utility model additionally provides the using method of above-mentioned broken nail withdrawing device, is specially:
First the first cross tongue of locating core is placed in the cross recess of screw, then overcoat hollow boring bit, bit makes steel plate screw be separated, and removes steel plate; When screw keeps intact state, be placed in the cross recess of screw by the second cross tongue bottom turnbarrel, rotary presser rod (gag lever post) makes its housing screw, then rotates cannulated sleeve, just can easily be screwed out by screw; When there is fracture in screw, with corresponding core drill centered by broken nail post, drill through the circular cortical bone block around broken nail post and take off for subsequent use, on broken nail post, anti-silk 5-8mm is attacked with the thread tapper of described screw withdrawing device, exit thread tapper, the depth limiting pole of sleeve of back-outing is positioned the respective depth place of tapping, broken nail post along tapping is screwed into turnbarrel, the firmly reversion when gag lever post withstands broken nail post tail end, sleeve and broken nail brute force are fixed together, hold the rotatable handle sleeve on sleeve tail end outer wall, can easily the bone nail of fracture be taken out; By the circular bone block Hui Zhi that cuts and nail place.
This utility model structure is simple, easy to use, the hollow boring bit with locating core is utilized to be separated with screw by steel plate, and then utilization makes complete screw easily screw out with the turnbarrel adding pressure bar (gag lever post), whole operating process does not increase wound, alleviate patient suffering, simple to operate, safe and reliable.When processing broken nail, thread tapper can attack anti-silk on broken nail post, sleeve of back-outing makes bone nail and sleeve wall combine closely, power of oppositely back-outing is utilized to be back-outed by broken nail, make broken nail taking-up process convenient and swift, time saving and energy saving, do not destroy offside cortical bone, reduce the risk of refracture, greatly can alleviate the misery of patient and the expenditure of medical expense.
Accompanying drawing explanation
Fig. 1 is the structural representation of this utility model hollow boring bit;
Fig. 2 is the structural representation of this utility model locating core;
Fig. 3 is the left view of Fig. 2;
Fig. 4 is the structural front view of this utility model thread tapper;
Fig. 5 is the left TV structure schematic diagram of thread tapper.
Fig. 6 is that this utility model is back-outed the vertical section structure schematic diagram of sleeve;
In figure: 1 is hollow boring bit, 13 is locating cores, and 14 is first cross tongues, and 15 is thread tappers; 2 is sleeves of back-outing; 16 is screw die sample female threads; 17 is excretion hole slots; 6 is screw threads; 7 is depth limiting pole (pressure rods); 8 is external screw threads; 9 is rotary handles; 10 is hands handles; 11 is positive silk screw threads; 12 is second cross tongues.
Detailed description of the invention
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with embodiment, this this utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain this this utility model, and be not used in restriction this utility model.
Below in conjunction with drawings and the specific embodiments, application principle of the present utility model is further described.
This utility model embodiment is achieved in that and is first placed in the cross recess of screw by the first cross tongue 14 of locating core 13, then overcoat hollow boring bit 1, and bit makes steel plate screw be separated, and removes steel plate, when screw keeps intact state, be placed in the cross recess of screw by the second cross tongue 12 bottom turnbarrel 2, rotary presser rod 7 (gag lever post) makes its housing screw, then rotates cannulated sleeve, just can easily be screwed out by screw, when there is fracture in screw, with corresponding core drill centered by broken nail post, drill through the circular cortical bone block around broken nail post and take off for subsequent use, on broken nail post, anti-silk 5-8mm is attacked with the thread tapper 15 of described screw withdrawing device, exit thread tapper, the depth limiting pole 7 of sleeve 2 of back-outing is positioned the respective depth place of tapping, broken nail post along tapping is screwed into turnbarrel 2, the firmly reversion when gag lever post 7 withstands broken nail post tail end, sleeve and broken nail brute force are fixed together, what handle 9 turnbarrel held on sleeve tail end outer wall rotated is rotation 10 hands handle, easily the bone nail of fracture can be taken out, by the circular bone block Hui Zhi that cuts and nail place.
Claims (4)
1. a nail taking out apparatus in orthopaedics, is characterized in that, comprises screw steel plate separator, thread tapper and sleeve of back-outing; Described screw steel plate separator comprises hollow boring bit (1), the hollow parts of described hollow boring bit (1) is equipped with locating core (13), and the front end of locating core (13) is provided with the first cross tongue (14); The tail end of depth limiting pole has external screw thread and hands handle; Be provided with the second cross tongue (12) bottom described sleeve tail end of back-outing, inwall is provided with positive silk screw thread, and the external screw thread of depth limiting pole tail end matches with described positive silk screw thread, described in the back-out tail end of sleeve be provided with rotary handle.
2. nail taking out apparatus in orthopaedics as claimed in claim 1, it is characterized in that, described thread tapper is circular casing, and front inner wall is provided with screw thread; Described screw thread is anti-silk screw thread, and described anti-silk screw thread is provided with porus excretorius sample hole slot.
3. nail taking out apparatus in orthopaedics as claimed in claim 1, is characterized in that, described in barrel forward end of back-outing be provided with the screw thread identical with the front end of thread tapper anti-filament plate tooth shape screw thread.
4. nail taking out apparatus in orthopaedics as claimed in claim 1, is characterized in that, described in the back-out tail end of sleeve depth limiting pole is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520165530.1U CN204723168U (en) | 2015-03-23 | 2015-03-23 | A kind of nail taking out apparatus in orthopaedics |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520165530.1U CN204723168U (en) | 2015-03-23 | 2015-03-23 | A kind of nail taking out apparatus in orthopaedics |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204723168U true CN204723168U (en) | 2015-10-28 |
Family
ID=54381560
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520165530.1U Expired - Fee Related CN204723168U (en) | 2015-03-23 | 2015-03-23 | A kind of nail taking out apparatus in orthopaedics |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204723168U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104799935A (en) * | 2015-04-23 | 2015-07-29 | 陈晨 | Orthopedic screw taking device |
| CN106073886A (en) * | 2016-07-13 | 2016-11-09 | 苏州苏南捷迈得医疗器械有限公司 | A kind of orthopedic broken screw nail-fetching device |
| CN106175916A (en) * | 2016-07-13 | 2016-12-07 | 苏州苏南捷迈得医疗器械有限公司 | A kind of bone surgery nail-fetching device |
-
2015
- 2015-03-23 CN CN201520165530.1U patent/CN204723168U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104799935A (en) * | 2015-04-23 | 2015-07-29 | 陈晨 | Orthopedic screw taking device |
| CN106073886A (en) * | 2016-07-13 | 2016-11-09 | 苏州苏南捷迈得医疗器械有限公司 | A kind of orthopedic broken screw nail-fetching device |
| CN106175916A (en) * | 2016-07-13 | 2016-12-07 | 苏州苏南捷迈得医疗器械有限公司 | A kind of bone surgery nail-fetching device |
| CN106073886B (en) * | 2016-07-13 | 2019-09-27 | 苏州苏南捷迈得医疗器械有限公司 | A kind of orthopedic broken screw nail-fetching device |
| CN106175916B (en) * | 2016-07-13 | 2019-09-27 | 苏州苏南捷迈得医疗器械有限公司 | A kind of bone surgery nail-fetching device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151028 Termination date: 20160323 |
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| CF01 | Termination of patent right due to non-payment of annual fee |