CN2629660Y - Expanding screw - Google Patents
Expanding screw Download PDFInfo
- Publication number
- CN2629660Y CN2629660Y CN 03246268 CN03246268U CN2629660Y CN 2629660 Y CN2629660 Y CN 2629660Y CN 03246268 CN03246268 CN 03246268 CN 03246268 U CN03246268 U CN 03246268U CN 2629660 Y CN2629660 Y CN 2629660Y
- Authority
- CN
- China
- Prior art keywords
- screw
- bolt
- sleeve
- expansion
- inflation
- 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 an expansion screw of an inner fixing device for clinical orthopedics, which is composed of an inner screw bolt, an expansion screw sleeve and a fixing claw, wherein the tThe utility model relates to a clinical orthopedics inflates bolt with in fixed instrument, which is made of an inside bolt, an inflate nut and a solid jaw. The screw rod's rear part of the inside bolail part of an inner screw bolt rod is shortened in the radial direction and forms a circular cone shape, the outer diameter of the expansion screw sleeve has screw threads, and a sleeve barrel at thet radial reduces to assume a conical shape. The outer diameter of the inflation nut is provided with the thread, the sleeve at rear part of the inflation nut fits with the screw rod's rear part shape tail part of the screw threads is matched with the shape of the tail part of the inner screw bolt rod and is provided with a plurality of groove-shaped openings. The fixing claw has a shim with clawsof the inside bolt, and several grooved openings are arranged at the rear sleeve. The fixed jaw is a filling piece with fingernail; the filling piece's outer diameter is provided with several convexit, the outer diameter of the shim has a plurality of convex flat claws or bending claws, the inner screw bolt forms screw thread connection with the expansion screw sleeve, and the fixing claw is arrany even fingernails or curving fingernails. The inside bolt connects to the inflation nut screw. The solid jaw is arranged between the bolt head and the inflation nut. When the inflation bolt is used iged between a screw bolt head and the expansion screw sleeve. When the expansion screw is used for treating fractures at special positions, the fracture position can be firmly fixed, and the phenomenan treating the privileged site bone fracture, the inflation bolt can cause the bone fracture spot be fixed firmly, can not present the phenomena that the fixture becoming less crowded, the bone fractu of fixture looseness, fracture block displacement, etc. can not occur. The utility model has the advantages of simple and quick operation, small damage and few nail usage, and is suitable for the popre block shifting and so on, and the operation is simple, rapid, damage slightly, using few nails, and is suitable in orthopedics clinical promotion and application. ularization and the application of clinical orthopedics.
Description
Affiliated technical field
This utility model relates to a kind of internal fixation device swell fixture of orthopaedics clinical practice, is suitable for treating the privileged sites fracture.
Background technology
Orthopaedics therapy medial and lateral malleolus fracture, the interior outside condylar fracture of humerus, femur is when fracture of femoral neck and olecranal fracture, forcing screw commonly used or internal fixation devices such as Kirschner wire, steel wire become flexible the sclerite displacement but fixture appears in these apparatuses easily, more with nail, operation is than drawbacks such as difficulties.
Summary of the invention
All drawbacks that the purpose of this utility model just is to avoid orthopaedics clinical treatment privileged sites fracture to occur easily adopt advanced configuration, change fixed form, make the fracture site fixation, have both reduced with nail, and are simple to operate again, rapid, damage is little.A kind of orthopaedics swell fixture therefore is provided.
The clinical internal fixation device swell fixture of using of this orthopaedics is made up of inner bolt, expansion swivel nut and fixed claw.Inner bolt is threaded with the expansion swivel nut, and fixed claw places between bolt head and the expansion swivel nut.
The inner bolt head is hexagon, opening or other shape, and screw flight radially dwindles with lower tail and is coniform.Expansion swivel nut external diameter is threaded, and its afterbody sleeve and inner bolt screw rod tail shape adapt, and have several slit openings.Expansion swivel nut outer-diameter threads embeds in the sclerotin, and the effect of anti-retaining nail is arranged.Fixed claw is the pad of band pawl, and flat pawl of several convexs of pad external diameter band or curved jaws are used to grasp sclerite.The expansion swivel nut is provided with several bellmouths, is convenient to use when swell fixture takes out special extractor.
Swell fixture can be designed plurality of specifications according to its diameter, length scale, selects for use during for use.
Select length, swell fixture that diameter is suitable for use according to X-ray film, fix sclerite, with the bit bore identical with the swell fixture diameter, insert swell fixture, progressively screw inner bolt, the cone reach of its afterbody, distending expansion swivel nut slit opening, its external screw thread close and firm immediately embeds in the sclerotin, and fixed claw compresses and grasp sclerite, prevents its rotation, loosening.According to the fracture site difference, select the fixed claw of different size for use, make it can compress and grasp firm sclerite and be advisable.Treat that fracture fully after the healing, when taking out swell fixture, screws out inner bolt earlier, take out fixed claw, block the bellmouth of expansion swivel nut head, taking-up expansion swivel nut with special extractor.
This swell fixture is used for the treatment of privileged sites when fracture, can make the fracture site fixation, phenomenons such as fixture is loosening, sclerite displacement can not occur, and simple to operate, rapid, damage is little, few with nail, be suitable for the orthopaedics clinical application.
Description of drawings
Fig. 1 is the swell fixture front view
Fig. 2 is a swell fixture A-A view
Fig. 3 is the fixed claw structural representation
The specific embodiment
Introduce embodiment of the present utility model below in conjunction with accompanying drawing:
This swell fixture is made up of inner bolt (1), expansion swivel nut (2) and fixed claw (3).Inner bolt (1) is a top single radial cut nut, and screw flight radially dwindles with lower tail and is coniform.Expansion swivel nut (2) external diameter is threaded, and its afterbody sleeve and inner bolt (1) screw rod tail shape adapt, and have four slit openings.Fixed claw (3) is band claw pad sheet, two convex bending pawls of pad external diameter band.Inner bolt (1) is threaded with expansion swivel nut (2).Fixed claw (3) places between bolt (1) head and the expansion swivel nut (2).
Claims (6)
1. a kind of internal fixation device swell fixture of orthopaedics clinical practice is characterized in that being made up of inner bolt, expansion swivel nut and fixed claw, and inner bolt is threaded with the expansion swivel nut, and fixed claw places between bolt head and the expansion swivel nut.
2. swell fixture according to claim 1 is characterized in that inner bolt is turret head or open top nut, and screw flight radially dwindles with lower tail and is coniform.
3. swell fixture according to claim 1, the swivel nut external diameter that it is characterized in that expanding is threaded, and its afterbody sleeve and inner bolt screw rod tail shape adapt, and have several slit openings.
4. swell fixture according to claim 3, the swivel nut afterbody sleeve that it is characterized in that expanding has four slit openings.
5. swell fixture according to claim 1 is characterized in that fixed claw is the pad of band pawl, flat pawl of several convexs of pad external diameter band or curved jaws.
6. swell fixture according to claim 5 is characterized in that fixed claw is the pad of band pawl, two flat pawls of convex of pad external diameter band or curved jaws.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03246268 CN2629660Y (en) | 2003-07-31 | 2003-07-31 | Expanding screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03246268 CN2629660Y (en) | 2003-07-31 | 2003-07-31 | Expanding screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2629660Y true CN2629660Y (en) | 2004-08-04 |
Family
ID=34292603
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03246268 Expired - Fee Related CN2629660Y (en) | 2003-07-31 | 2003-07-31 | Expanding screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2629660Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104095677A (en) * | 2014-07-15 | 2014-10-15 | 东南大学 | High-strength combined self-degrading expansion bone peg |
| CN105361941A (en) * | 2015-12-14 | 2016-03-02 | 中国人民解放军第二军医大学 | Atlas vertebral pedicle hollow universal screw |
| CN106344142A (en) * | 2016-08-23 | 2017-01-25 | 郝立波 | Expandable bone nail convenient to remove and having fastness convenient to adjust |
| CN106691525A (en) * | 2017-01-06 | 2017-05-24 | 南京市六合区人民医院 | Fixing system for transplant in anterior cruciate ligament reconstruction |
-
2003
- 2003-07-31 CN CN 03246268 patent/CN2629660Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104095677A (en) * | 2014-07-15 | 2014-10-15 | 东南大学 | High-strength combined self-degrading expansion bone peg |
| CN104095677B (en) * | 2014-07-15 | 2016-11-16 | 东南大学 | High-strength combination formula is from degrading expansion bone nail |
| CN105361941A (en) * | 2015-12-14 | 2016-03-02 | 中国人民解放军第二军医大学 | Atlas vertebral pedicle hollow universal screw |
| CN106344142A (en) * | 2016-08-23 | 2017-01-25 | 郝立波 | Expandable bone nail convenient to remove and having fastness convenient to adjust |
| CN106691525A (en) * | 2017-01-06 | 2017-05-24 | 南京市六合区人民医院 | Fixing system for transplant in anterior cruciate ligament reconstruction |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |