CN2666362Y - Intramedullary forked pin - Google Patents
Intramedullary forked pin Download PDFInfo
- Publication number
- CN2666362Y CN2666362Y CN 200320131364 CN200320131364U CN2666362Y CN 2666362 Y CN2666362 Y CN 2666362Y CN 200320131364 CN200320131364 CN 200320131364 CN 200320131364 U CN200320131364 U CN 200320131364U CN 2666362 Y CN2666362 Y CN 2666362Y
- Authority
- CN
- China
- Prior art keywords
- nail
- tongue
- far
- notched
- forked
- 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
An intramedullary nail which can be bifurcated at the front section consists of a convex groove nail and a concave groove nail by embedding-junction, the front section of the concave groove nail is provided with a pivot which is inclined to the convex groove nail, the two nails can be divided into a fork shape after using a screw nail entering device to ensure the convex groove nail passes through the pivot; the utility model can be mainly divided into three types of humerus type, tibia type and femur type according to the location of the pivot which is decided by the radian of the marrow cavity and the type of the fracture, and the utility model can be divided into the different subtypes further according to the proximal, middle and distal fracture.
Description
Technical field
This utility model relates to a kind of intramedullary pin that is used for fracture fixation, particularly a kind of in marrow divaricable nail
Background technology
The present intramedullary pin that uses clinically is interlocking intramedullary nail normally, but has the stress-shielding effect knitting not firm to the broken ends of fractured bone, need dial the shortcoming except that pinning in advance.It is undesirable that the bifurcated of IESN props up tiny fixed effect.The double square intramedullary pin is not suitable for humerus.And the various intramedullary pin rare clinical of other invention should have.
Summary of the invention
Stress-shielding effect for fear of interlocking intramedullary nail, increase the strength that bifurcated props up and can in humeral fracture, use, the invention provides forked nail in a kind of marrow, this nail can enlarge when it advances to follow closely section far away bifurcated gradually gradually according to pulp cavity, has fixed far-end preferably.
Forked nail is made of together tongue nail and notched nail intercalation in the marrow, and near-end has locking nail hole section far away bifurcated gradually.The notched nail near-end has a locking nail hole, and nearly section has the groove of vertical shape, in some inclined to one side tongue of section far away follow closely the fulcrum that this place is bifurcated, inside groove Dou shape from depth to shallow, the rectangular or half garden shape of the smooth cross section of far-end.Tongue nail near-end has a locking nail hole, and nearly section has the tongue of vertical shape, in far away section some protruding ridge is arranged, the rectangular or half garden shape of the smooth cross section of far-end.When the tongue nail inserts notched nail by fulcrum, force the lateral displacement of notched nail, reach the purpose of two nail bifurcateds to recessed side.Fulcrum bifurcated when the far-end is little, and bifurcated is big during near near-end, can be according to the position of the needs decision fulcrum of the form of pulp cavity and fracture fixation.Main humerus type, tibia type, femur type three types of dividing, according near, in, section fracture far away is further divided into different hypotypes.
Description of drawings
Fig. 1 is this utility model structural representation;
Sketch map when Fig. 2 is this utility model split;
Fig. 3 is the A-A cutaway view of Fig. 1;
Fig. 4 is the B-B cutaway view of Fig. 1;
Fig. 5 is the structural representation that screw rod advances to follow closely device.
1. notched nails among the figure, 2. tongue nail, 3. notched nail proximal locking nail hole, 4. the groove of the vertical shape of nearly section, 5. in the inclined to one side fulcrum of crossing the tongue nail of section far away, the 6. rectangular or half garden shape of the smooth cross section of far-end, 7. tongue nail near-end has a locking nail hole, and 8. near section has the tongue of vertical shape, 9. in far away section some protruding ridge is arranged, 10. the rectangular or half garden shape of the smooth cross section of far-end, 11. screw rods advance to follow closely device, 12. near-end hooks, 13. far-end hook, 14. screw rod, 15. shells, 16. handles.
The specific embodiment
Be described further below in conjunction with accompanying drawing: 1, according to forked nail in the suitable marrow of the type selecting of position, the fracture of fracture.2, the end at pulp cavity is slotted after the reduction of the fracture, inserts notched nail (1) earlier, and concave surface is inside, and the insertion tongue was followed closely (2) after far-end (6) was crossed fracture site, and the notch (4) of tongue (8) the alignment indentation nail of tongue nail inserts.Advance to follow closely near-end hook (12) that device advances nail (11) the notched nail locking nail hole (3) of packing into screw rod when 3, resistance is big, far-end hook (13) locking nail hole (7) of packing into, rotary handle (16) makes the far-end (10) of tongue nail by fulcrum (5).4, advance to follow closely order according to the situation of pulp cavity, fracture and nail bifurcated decision concave, convex groove nail.5, locking nail hole (3) (7) insertion screw is fixed in epiphysis, the rotation displacement of anti-non-magnetic shim.6, advancing to follow closely device (11) with screw rod after the union of fracture takes out earlier tongue nail (2) easily and takes out notched nail (1) again.
Claims (4)
1, forked nail in a kind of marrow, near-end has the locking nail hole far-end to separate gradually, it is characterized in that: notched nail has the fulcrum of a deflection tongue nail, and the tongue of tongue nail inserts in the groove of notched nail, with screw rod advance to follow closely far-end that device makes the tongue nail by the fulcrum of notched nail after two nails separate gradually.
2, forked nail in the marrow according to claim 1 is characterized in that: the near-end of tongue nail has locking nail hole, and nearly section has tongue, the far-end of tongue that discontinuous slick Xiao is arranged, and far away section of the tongue nail is smooth shape and does not have tongue.
3, forked nail in the marrow according to claim 1 is characterized in that: the locking nail hole of the near-end of notched nail, and nearly section is fluted, and the far-end of groove shoals, and the inclined to one side tongue nail of crossing in a place is far arranged in the notched nail, becomes fulcrum, and far away section of notched nail is smooth shape and does not have groove.
4, forked nail in the marrow according to claim 1 is characterized in that: screw rod advances to follow closely device handle, screw rod, nut, closely collude, shell, and hook far away is formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320131364 CN2666362Y (en) | 2003-12-30 | 2003-12-30 | Intramedullary forked pin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320131364 CN2666362Y (en) | 2003-12-30 | 2003-12-30 | Intramedullary forked pin |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2666362Y true CN2666362Y (en) | 2004-12-29 |
Family
ID=34350193
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200320131364 Expired - Fee Related CN2666362Y (en) | 2003-12-30 | 2003-12-30 | Intramedullary forked pin |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2666362Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102631238A (en) * | 2011-02-10 | 2012-08-15 | 财团法人金属工业研究发展中心 | Medical equipment with modularized intramedullary nail and intramedullary nail |
-
2003
- 2003-12-30 CN CN 200320131364 patent/CN2666362Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102631238A (en) * | 2011-02-10 | 2012-08-15 | 财团法人金属工业研究发展中心 | Medical equipment with modularized intramedullary nail and intramedullary nail |
| US9421047B2 (en) | 2011-02-10 | 2016-08-23 | Metal Industries Research & Development Centre | Support instrument with modular intramedullary nail |
| US9421048B2 (en) | 2011-02-10 | 2016-08-23 | Metal Industries Research & Development Centre | Support instrument with modular intramedullary nail |
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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 |