CN2738744Y - Improved structure of intramedullary nail - Google Patents
Improved structure of intramedullary nail Download PDFInfo
- Publication number
- CN2738744Y CN2738744Y CN 200420096281 CN200420096281U CN2738744Y CN 2738744 Y CN2738744 Y CN 2738744Y CN 200420096281 CN200420096281 CN 200420096281 CN 200420096281 U CN200420096281 U CN 200420096281U CN 2738744 Y CN2738744 Y CN 2738744Y
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- CN
- China
- Prior art keywords
- extension
- bar portion
- bone
- intramedullary pin
- inclined plane
- Prior art date
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- Expired - Fee Related
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Abstract
The utility model provides an improved intramedullary nail conformation which is a hollow body comprising a rod part and an extending segment, wherein the rod end-face is provided with a saw-tooth part around, and the extending segment end margin is provided with an inclined surface part which is provided with a breach. The rod part and the extending segment are respectively provided with a plurality of upper through holes arranged on different axial lines, which makes the intramedullary nail firmly conjoined in the bone causing no offsetting phenomenon.
Description
Technical field
This utility model relates to a kind of structure of intramedullary pin of improvement, refer in particular to a kind ofly to make the inside bone that is incorporated into that intramedullary pin can be firm, and not can in conjunction with the time cause the phenomenon of skew
Background technology
As shown in Figure 5, general traditional intramedullary pin 4 is made of a hollow tube with head 41 and distal portion 42, wherein, offer most keyholes 43 that run through from hollow tube on the head 41, a most keyhole 43 are to be arranged on the same axis, and the end face of head 41 is to have an inclined plane part 44, and has an end 45 that is gradually-reducing shape in an end of distal portion 42.
When using, be with the inclined plane part 44 of an instrument (not shown) corresponding to head 41 end faces, intramedullary pin 4 is placed in the bone, afterwards, locking has screw in most keyholes 43, and intramedullary pin 4 is fixedly arranged in the bone.Though above-mentioned traditional structure can be fixedly arranged on intramedullary pin 4 in the bone, its major defect is:
1, because the end face of head 41 is to have an inclined plane part 44, so when the end face interoperation of instrument and head 41, inclined plane part 44 is understood the corresponding surface generation gap with instrument, and intramedullary pin 4 can't be placed in correct position in the bone;
2,, therefore, when cooperating screw to be locked in intramedullary pin 4 in the bone in most the keyholes 43, then can cause the not good phenomenon of support effect of structure because most keyholes 43 are to be arranged on the same axis;
3 moreover because an end of distal portion 42 is the ends 45 that are gradually-reducing shape, so when intramedullary pin 4 is fixedly arranged in the bone, interlock also can't be done with cancellous bone closely in the end 45 that is gradually-reducing shape.So general traditional intramedullary pin 4 can not meet the required of user on reality is used.
Summary of the invention
Main purpose of the present utility model provides the structure of the intramedullary pin of improvement, it is the hollow body that is made of a bar portion and an extension, the extension ora terminalis of body is to have an inclined plane part, be to be provided with most perforation on bar portion and the extension respectively at appropriate location, the end face of bar portion is to be equipped with a sawtooth portion, the inclined plane part of extension end face is to have a breach, most perforation on bar portion and the extension are to be arranged at respectively on the different axis, reach make intramedullary pin firm be incorporated into inside bone, and not can in conjunction with the time cause the purpose of skew.
The purpose of this utility model is achieved in that a kind of structure of intramedullary pin of improvement, it is a hollow body that is made of a bar portion and an extension, the ora terminalis of extension is to have an inclined plane part, and be to be provided with most perforation respectively at appropriate location on bar portion and the extension, it is characterized in that: the end face of this bar portion is to be equipped with a sawtooth portion, the inclined plane part of this extension end face is to have a breach, and most perforation on this bar portion and the extension are to be arranged at respectively on the different axis.
Further specify below in conjunction with preferred embodiment and accompanying drawing.
Description of drawings
Fig. 1 is a schematic side view of the present utility model.
Fig. 2 is a schematic top plan view of the present utility model.
Fig. 3 is a generalized section of the present utility model.
Fig. 4 is a user mode generalized section of the present utility model.
Fig. 5 is the schematic perspective view of traditional structure.
The specific embodiment
Consult Fig. 1-shown in Figure 3, the structure of the intramedullary pin of improvement of the present utility model, it is the hollow body 1 that is made of a bar portion 11 and an extension 12, and what make that intramedullary pin body 1 can be firm is incorporated into bone 3 inside, and not can in conjunction with the time cause the phenomenon of skew.
Bar portion 11 end faces of body 1 are to be equipped with a sawtooth portion 111, and the ora terminalis of extension 12 is to have an inclined plane part 121, the inclined plane part 121 of extension 12 ora terminalis is to have a breach 122, and be to be provided with most perforation 13 on bar portion 11 and extension 12 respectively at appropriate location, and most perforation 13 on bar portion 11 and the extension 12 are to be arranged at respectively on the different axis, constitute the structure of the intramedullary pin of a brand-new improvement.
Consult shown in Figure 4, it is user mode generalized section of the present utility model, when this utility model when using, be to cooperate with a tool group (not shown) to be connected on the inclined plane part 121 of body 1 one end extensions 12 ora terminalis, and because inclined plane part 121 is to have a breach 122, therefore, when tool group combines with the inclined plane part 121 of extension 12 ora terminalis, can form the effect of a clip, avoid the two generation gap, and do not have the phenomenon of rotation or skew when body 1 is combined with bone 3, and can utilize the set sawtooth of the 11 end faces portion of bar portion 111 of body 1, when body 1 is combined with bone 3, can be deeply to the cancellous bone 31 of bone 3, and do interlock closely;
Afterwards, a Locking screw 2 again locks respectively in most the perforation 13 on bar portion 11 and extension 12, make body 1 can be fixed in bone 3 inside, because most perforation 13 on bar portion 11 and the extension 12 are to be arranged at respectively on the different axis, therefore, can cooperate Locking screws 2 by perforation 13, increase the gmatjpdumamics of different axis, so can make body 1 firm be incorporated into bone 3 inside.
In sum, the structure of the intramedullary pin of improvement of the present utility model, can effectively improve traditional various shortcoming, making the structure of intramedullary pin is the structural grouping that has the inclined plane part of breach and be arranged at most perforation on the different axis respectively because of sawtooth portion, the extension ora terminalis of bar end surface, reach can be firm the inside bone that is incorporated into, make to the utlity model has novelty, creativeness and practicality.
The above only is preferred embodiment of the present utility model, and all simple equivalent of doing according to content of the present utility model change and modify, and all should belong within the protection domain of the present utility model.
Claims (1)
1, a kind of structure of intramedullary pin of improvement, it is a hollow body that is made of a bar portion and an extension, the ora terminalis of extension is to have an inclined plane part, and be to be provided with most perforation respectively at appropriate location on bar portion and the extension, it is characterized in that: the end face of this bar portion is to be equipped with a sawtooth portion, the inclined plane part of this extension end face is to have a breach, and most perforation on this bar portion and the extension are to be arranged at respectively on the different axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420096281 CN2738744Y (en) | 2004-09-28 | 2004-09-28 | Improved structure of intramedullary nail |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420096281 CN2738744Y (en) | 2004-09-28 | 2004-09-28 | Improved structure of intramedullary nail |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2738744Y true CN2738744Y (en) | 2005-11-09 |
Family
ID=35353813
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420096281 Expired - Fee Related CN2738744Y (en) | 2004-09-28 | 2004-09-28 | Improved structure of intramedullary nail |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2738744Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108778168A (en) * | 2016-03-18 | 2018-11-09 | 李东勋 | intramedullary nail with anti-inclining function |
-
2004
- 2004-09-28 CN CN 200420096281 patent/CN2738744Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108778168A (en) * | 2016-03-18 | 2018-11-09 | 李东勋 | intramedullary nail with anti-inclining function |
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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: 20051109 Termination date: 20130928 |