CN201263718Y - General-purpose intramedullary nail - Google Patents
General-purpose intramedullary nail Download PDFInfo
- Publication number
- CN201263718Y CN201263718Y CNU2008201616383U CN200820161638U CN201263718Y CN 201263718 Y CN201263718 Y CN 201263718Y CN U2008201616383 U CNU2008201616383 U CN U2008201616383U CN 200820161638 U CN200820161638 U CN 200820161638U CN 201263718 Y CN201263718 Y CN 201263718Y
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- Prior art keywords
- nail body
- nail
- intramedullary pin
- fracture
- general
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- 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.)
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Abstract
The utility model relates to a medical apparatus for orthopedic operation, in particular to a universal intramedullary nail for fracture operation, which comprises a nail body, wherein the nail body is an elastic body; the head end of the nail body is a sickle-shaped nail head; the nail body is prebent; the prebending direction is identical to the bending direction of the sickle-shaped nail body; two prebent nail bodies with identical bending percentage are symmetrically inserted into a hollow pith of a fracture section; and each intramedullary nail has three supporting points at the inner side of a bone.
Description
Technical field
This utility model relates to the bone surgery medical apparatus and instruments, especially a kind of general intramedullary pin that is used for fracture operation.
Background technology
Along with the development of fracture internal fixation biology, the intramedullary pin technique for fixing of fracture is subjected to people's high praise in recent years.The fracture intramedullary pin fixedly is to insert a good biocompatibility, intramedullary pin that intensity is high in far-end of fracturing and near-end pulp cavity, reaches the connection and the fixed purpose of fracture end.And patient can exempt the hardship of external fixation of fracture, just can carry out functional exercise in early days at operative treatment.The intramedullary pin of fracturing is fixed but existing intramedullary pin is not suitable for 3-15 year child, and the diameter of existing intramedullary pin is too big concerning child's pulp cavity, is not suitable for child's fixation of fractures.
The utility model content
In order to overcome the deficiency that existing intramedullary pin can't be used for child's fracture, this utility model provides a kind of general intramedullary pin, and this intramedullary pin can well be suitable for child's fracture, and can accomplish Wicresoft, reduces patient's misery.
The technical scheme that its technical problem that solves this utility model adopts is: a kind of general intramedullary pin, comprise the nail body, the nail body is an elastomer, at nail body head end is the sickleshaped ailhead, the nail body carries out prebuckling, the direction of prebuckling is identical with the bending direction of reaping hook staple body, and two that the flexibility of process prebuckling is identical should nail body symmetry be inserted the fracture segment pulp cavity, and every intramedullary pin has three strong points in the bone inboard.The purpose of sickleshaped ailhead is to make insertion smooth and easy.
In order to increase the biocompatibility of following closely body and to guarantee that the nail body after the prebuckling of nail body has elastic force preferably, the nail body is the elastomer that titanium alloy is made.
The beneficial effects of the utility model are that there is enough stability in Wicresoft during the movable part heavy burden, relatively be fit to child's long bone from physiology and clinical adaptability aspect.
Description of drawings
Below in conjunction with drawings and Examples this utility model is further specified.
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the final stationary state sketch map in operation of the present utility model back.
1. nail body, 2. reaping hook staple bodies among the figure.
The specific embodiment
A kind of general intramedullary pin as shown in Figure 1, comprise nail body 1, nail body 1 is an elastomer, at nail body 1 head end is sickleshaped ailhead 2, nail body 1 carries out prebuckling, the direction of prebuckling is identical with the bending direction of reaping hook staple body 2, and two of the process prebuckling should nail body 1 symmetry be inserted the fracture segment pulp cavity, and every intramedullary pin has three strong points in the bone inboard.The elastomer that nail body 1 is made for titanium alloy.
The use of this intramedullary pin is as follows:
Infant is lain on the back on the printing opacity operation table under the general anesthesia, and whole limbs sterile drape keeps suffering from the limb activity, so that traction and operation technique.Be equipped with C type arm X line machine, select this suitable general intramedullary pin of diameter, to the far-end metaphysis, with this intramedullary pin pre-bending, the prebuckling radian is 3 times of pulp cavity diameter to length requirement from the near-end metaphysis, and the top of its convex surface can reach the level height of fracture.Suffering from the nearly fracture end 1～2cm of limb epiphyseal plate place work one little otch, the passivity separation reaches periosteum, cuts periosteum.Apart from epiphyseal plate 2cm place, open cortical bone with awl, the inclination awl becomes miter angle with the backbone.Insert two these intramedullary pins respectively, be advanced to place, fracture plane and suspend.The reduction of the fracture continues into nail then.In the process of inserting, the pulp cavity passage promotes crooked intramedullary pin and become straight in pulp cavity, this elastic force distortion produces a bending moment in pulp cavity, the lateral displacement that impels fracture with become angular displacement to obtain correcting, when the intramedullary needle of second same flexure degree inserts pulp cavity, it with identical and relative equalising torque first intramedullary pin, like this, two intramedullary pins produce cross stress in marrow, reach the purpose of keeping the fracture longitudinal axis.Two these intramedullary pins are inserted their final position.The bending of backshank end is embedded in the next door of skeleton, about about 1～1.5cm, wipes out redundance.Final surgical state as shown in Figure 2.
Claims (2)
1, a kind of general intramedullary pin, comprise nail body (1), it is characterized in that: described nail body (1) is an elastomer, at nail body (1) head end is sickleshaped ailhead (2), nail body (1) carries out prebuckling, the direction of prebuckling is identical with the bending direction of reaping hook staple body (2), and two of the process prebuckling should nail body (1) symmetry be inserted the fracture segment pulp cavity, and every intramedullary pin has three strong points in the bone inboard.
2, general intramedullary pin according to claim 1 is characterized in that: the elastomer that described nail body (1) is made for titanium alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201616383U CN201263718Y (en) | 2008-10-09 | 2008-10-09 | General-purpose intramedullary nail |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201616383U CN201263718Y (en) | 2008-10-09 | 2008-10-09 | General-purpose intramedullary nail |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201263718Y true CN201263718Y (en) | 2009-07-01 |
Family
ID=40830062
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201616383U Expired - Fee Related CN201263718Y (en) | 2008-10-09 | 2008-10-09 | General-purpose intramedullary nail |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201263718Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI706765B (en) * | 2019-08-27 | 2020-10-11 | 楊琳敏 | Interlocking "ㄡ" type intramedullary double slender steel rods for reduction and fixation of humeral fractures near the elbow joint |
-
2008
- 2008-10-09 CN CNU2008201616383U patent/CN201263718Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI706765B (en) * | 2019-08-27 | 2020-10-11 | 楊琳敏 | Interlocking "ㄡ" type intramedullary double slender steel rods for reduction and fixation of humeral fractures near the elbow joint |
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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: 20090701 Termination date: 20161009 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |