CN201239194Y - Device for fetching screw of orthopaedics - Google Patents
Device for fetching screw of orthopaedics Download PDFInfo
- Publication number
- CN201239194Y CN201239194Y CNU200820024788XU CN200820024788U CN201239194Y CN 201239194 Y CN201239194 Y CN 201239194Y CN U200820024788X U CNU200820024788X U CN U200820024788XU CN 200820024788 U CN200820024788 U CN 200820024788U CN 201239194 Y CN201239194 Y CN 201239194Y
- Authority
- CN
- China
- Prior art keywords
- sleeve
- pullover
- bolt
- handle
- rotating cylinder
- 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 relates to a bolt extraction device for an orthopedics department, which belongs to medical equipment and mainly comprises a sleeve barrel and a handle. The bolt extraction device is characterized in that the sleeve barrel comprises a sleeve head in a pipe socket shape and a sleeve tail in a cylinder shape, wherein the sleeve head is longitudinally provided with a retractable gap slot, and the sleeve tail is outwardly sleeved with a rotating cylinder with a handle through a screw thread structure. By adopting a rotation and tightening way to fasten a bolt and rotate or directly extract the bolt, the utility model has the convenient, stable and rapid bolt extraction, the sleeve head and the bolt are tightly combined without submarining phenomenon, thereby the utility model is applicable to medical fixing nails of various types.
Description
Technical field
This utility model belongs to medical equipment, the special-purpose withdrawing device of particularly a kind of medical orthopaedics hold-down screw.
Background technology
Fracture patient usually uses medical screw fixedly fracture site or fixation steel plate, and medical screw generally comprises staple, drive screw, gim peg etc., and the back that recovers from injury generally needs to take out.Generally adopt screwdriver and operating forceps to take out operation now clinically.Since screw is long-time use after, phenomenon such as be prone to stripped thread, raise one's hat is taken out difficulty, need firmly press closer screw just can finish, it is big to take out difficulty, and increases the patient suffering, undue force also can cause new fracture.
Summary of the invention
The purpose of this utility model is to provide a kind of orthopaedic screw withdrawing device of special use, adopts the fastening mode of rotation to take out screw.
This utility model is achieved in that
The orthopaedic screw withdrawing device mainly comprises sleeve and handle, it is characterized in that: described sleeve is anterior pullover for the toroidal that outwards stretches, and vertically has flexible clearance groove on pullover; The sleeve rear portion is the cylindrical shroud tail, and this cover tail is by rotating cylinder of helicitic texture overcoat, and this rotating cylinder rear end connects described handle.
After this utility model adopts said structure, utilize the fastening mode of rotation to entangle screw firm, promptly rotatable or directly take out screw, convenient to remove, steady, quick, sleeve combines with screw closely, the generation of no slip phenomenon, the taking-up of the suitable medical staple of various models.
Description of drawings
Accompanying drawing is a kind of structural representation of the present utility model.
The specific embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is elaborated.
In the accompanying drawing, 1 be pullover, 2 be driving lever for handle, 6 for rotating cylinder, 5 for flexible clearance groove, 4 for cover tail, 3.
As shown in drawings, this utility model is a kind of withdrawing device that is exclusively used in medical orthopaedics hold-down screw, mainly form by the rotating cylinder 4 and the sleeve of band handle 5, sleeve by forward pullover 1 and cover tail 2 two parts at rear portion constitute.Pullover 1 outwards stretches, and forms toroidal; Vertically have the flexible clearance groove 3 more than two on pullover 1, make pullover 1 can inwardly shrink under external force, be used to grip screw; Flexible clearance groove 3 generally is designed to three, uniform distribution on pullover 1.For increasing by pullover 1 chucking power, pullover 1 medial surface is provided with bar shaped or the anti-skidding stricture of vagina of criss-cross.Cover tail 2 is designed to cylindrical, and pullover 1 is connected smoothly.Cover tail 2 outsides are provided with external screw thread, and rotating cylinder 4 inboards are provided with corresponding female thread, and the two connects by the helicitic texture spinning.Rotating cylinder 4 rear ends are operating grip 5, rotate by handle 5 driven rotary tubes 4.For increasing revolving force, have a horizontal through hole on the handle 5, can penetrate a horizontal driving lever 6 in the through hole, logical driving lever 6 turning handles 5 increase the torsion of rotating cylinder 4 and can effectively reduce operating force.
For adapting to the taking-up direction of rotation of existing retaining thread nail, adopt reverse thread between cover tail 2 and the rotating cylinder 4.
During use, pullover 1 entangles screw, reverse rotation handle 5, and rotating cylinder 4 moves ahead along 2 rotations of cover tail, and inwardly pushes pullover 1, pullover 1 inside contraction gradually and tightly entangle screw firm, and can outwards extract screw this moment.As what take out is drive screw, can continue rotary handle 5, when pullover 1 with screws clamp after to a certain degree, pullover 1 can rotate synchronously with rotating cylinder 4, and begins to screw screw, screw is rotated withdraw from.Rotating cylinder 4 rotates more, and the power of pullover 1 clamp screws is big more, and pullover 1 the power of screwing is big more.
Claims (5)
1, orthopaedic screw withdrawing device mainly comprises sleeve and handle (5), it is characterized in that: the anterior toroidal pullover (1) for outwards stretching of described sleeve vertically has flexible clearance groove (3) on pullover (1); The sleeve rear portion is cylindrical shroud tail (2), and this cover tail (2) is by a rotating cylinder of helicitic texture overcoat (4), and this rotating cylinder (4) rear end connects described handle (5).
2, orthopaedic screw withdrawing device according to claim 1 is characterized in that: adopt the reverse thread structure between described cover tail (2) and the rotating cylinder (4).
3, orthopaedic screw withdrawing device according to claim 1 and 2 is characterized in that: described flexible clearance groove (3) is three, is evenly distributed on pullover (1).
4, orthopaedic screw withdrawing device according to claim 3 is characterized in that: have a cross through hole on the described handle (5), be coated with a horizontal driving lever (6) in this through hole.
5, orthopaedic screw withdrawing device according to claim 4 is characterized in that: described pullover (1) medial surface is provided with anti-skidding stricture of vagina.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820024788XU CN201239194Y (en) | 2008-06-26 | 2008-06-26 | Device for fetching screw of orthopaedics |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820024788XU CN201239194Y (en) | 2008-06-26 | 2008-06-26 | Device for fetching screw of orthopaedics |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201239194Y true CN201239194Y (en) | 2009-05-20 |
Family
ID=40712480
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200820024788XU Expired - Fee Related CN201239194Y (en) | 2008-06-26 | 2008-06-26 | Device for fetching screw of orthopaedics |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201239194Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102835994A (en) * | 2012-08-17 | 2012-12-26 | 苏州瑞华医院有限公司 | Three-jaw bone holder |
| CN104013443A (en) * | 2014-05-16 | 2014-09-03 | 吴静 | Medical screw clamping device |
| CN106388927A (en) * | 2016-09-21 | 2017-02-15 | 河北医科大学第三医院 | A clamp device for taking out screws in bones |
-
2008
- 2008-06-26 CN CNU200820024788XU patent/CN201239194Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102835994A (en) * | 2012-08-17 | 2012-12-26 | 苏州瑞华医院有限公司 | Three-jaw bone holder |
| CN102835994B (en) * | 2012-08-17 | 2014-04-02 | 苏州瑞华医院有限公司 | Three-jaw bone holder |
| CN104013443A (en) * | 2014-05-16 | 2014-09-03 | 吴静 | Medical screw clamping device |
| CN106388927A (en) * | 2016-09-21 | 2017-02-15 | 河北医科大学第三医院 | A clamp device for taking out screws in bones |
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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: 20090520 |