CN2404494Y - Pressing and locking type intramedullary nail - Google Patents
Pressing and locking type intramedullary nail Download PDFInfo
- Publication number
- CN2404494Y CN2404494Y CN 99230210 CN99230210U CN2404494Y CN 2404494 Y CN2404494 Y CN 2404494Y CN 99230210 CN99230210 CN 99230210 CN 99230210 U CN99230210 U CN 99230210U CN 2404494 Y CN2404494 Y CN 2404494Y
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- CN
- China
- Prior art keywords
- needle
- pin
- inner needle
- lock pin
- outer needle
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- Expired - Fee Related
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Abstract
The utility model discloses a pressing and locking type intramedullary needle for treating long bone fractures. The intramedullary needle comprises an outer needle, an inner needle and lock pins, wherein, the cross section of the outer needle forms an opening quincunx. Lock pin holes are arranged on the inner needle and the outer needle. The lock pin hole of the outer needle is larger than the lock pin hole of the inner needle. The inner needle is positioned in the outer needle. The lock pins are positioned in the lock pin holes of the inner needle and the outer needle. The near end and the far end of the utility model are respectively bent forwards. The near end forms a funnel shape. The near end of the inner needle is a short screw rod which is connected with a cone-shaped nail cap. Meanwhile, the utility model has the functions of screwing resistance, stability and pressurization and has the advantages of good knob stiffness and rotation force control, enough stable force for the bone fracture of a far side section and a near side section and good pressurizing force.
Description
This utility model relates to a kind of intramedullary needle for the treatment of long bone fracture.
The intramedullary needle of use is quincunx and the V-arrangement intramedullary needle at present, and its shortcoming is that turn-knob rigidity and control spinning force are poor, and strength is stablized in distally and proximal section fracture shortage.Lack compression strength between another kind of its epiphysis of fixing interlocking intramedullary nail.(reference material: ringgit chapter chief editor " clinical orthopaedics internal fixation ", Anhui, Hefei science tech publishing house, June in 1999 the 1st edition, P25; Guo's generation silk ribbon for holding a jade seal through its nose work " clinical orthopaedics anatomy ", Tianjin science tech publishing house, JIUYUE was the 1st edition in 1988, P434.)
The purpose of this utility model be to provide a kind of have anti-revolve, the pressurization fixing interlocking intramedullary nail of stable and pressurization.
The purpose of this utility model is achieved in that this intramedullary needle comprises outer pin, interior pin and pinning, on interior pin and the outer pin locking nail hole is arranged, the locking nail hole of outer pin is greater than the locking nail hole of interior nail, interior pin is positioned at outer pin, pinning is arranged in the locking nail hole of pin and outer pin, and the cross section of outer pin is that opening is quincunx, and near-end and far-end are antecurvature respectively, proximal head is infundibulate, and the near-end of interior pin is that short screw is connected with the taper head of a nail.
Described locking nail hole is oblate.
This utility model have simultaneously anti-revolve, stable and pressurization, turn-knob rigidity and control spinning force are good, and all there is enough stable strength in distally and proximal section fracture, compression strength is good.Be suitable for treating long bone fracture.
Below in conjunction with drawings and Examples this utility model is elaborated.
Fig. 1 is the structure chart of an embodiment of the present utility model.
Fig. 2 is the interior needle construction figure of Fig. 1.
Fig. 3 is that the A-A of Fig. 1 is to view.
Fig. 4 is the cone-shaped nail cap figure of Fig. 1.
1. pinnings among the figure, 2. outer pin, 3. in pin, 4. the taper head of a nail, 5. locking nail hole.
In Fig. 1, on interior pin 3 and the outer pin 2 locking nail hole 5 is arranged, the locking nail hole 5 of outer pin 2 is greater than the locking nail hole 5 of interior pin 3.Interior pin 3 is positioned at outer pin 2, and pinning 1 is arranged in the locking nail hole 5 of pin 3 and outer pin 2.The cross section of outer pin 2 is that opening is quincunx, to adapt to tibia marrow shape.Near-end is antecurvature 15 the degree, far-end is antecurvature 10 the degree, be beneficial to and pass outside the bending of tibia epimere.It is skewed that proximal edge is, and reducing stimulates patellar ligament, and far-end is tapered antecurvature, avoids wearing out the rear side cortical bone.Proximal head is infundibulate, prevents that pin from excessively entering pulp cavity.The near-end of interior pin 3 is that short screw is connected with the taper head of a nail 4.When the taper head of a nail 4 screws in, relies on outer pin 2 proximal head infundibulate slope resistances, with interior pin 3 tractive that makes progress.After the reduction of the fracture was threaded a needle, pin 3 and outer pin 2 ran through in distal locking nail 1 reached the backbone, because outer pin 2 perforates are longer, interior pin 3 pulling pinnings 1 also promptly spur the fracture far-end upwards, play pressurization.Pulling pressurization distance is in the 5mm.Can satisfy the pressurization needs fully.
In Fig. 2, interior pin 3 is a rectangle, high resilience, and both sides embed outer pin 2 inner edge notch places respectively, prevent to rotate.Consistent on locking nail hole 5 and the outer pin 2 is oblateness.
The foregoing description is the CIIN of fixed tibial fracture, and is varying sized according to structural principle, also can be used for humerus and Fracture of femur.
Claims (2)
- One kind the pressurization fixing interlocking intramedullary nail, this intramedullary needle comprises outer pin, the cross section of outer pin is that opening is quincunx, it is characterized in that it also has interior pin and pinning, has locking nail hole on interior pin and the outer pin, the locking nail hole of outer pin is greater than the locking nail hole of interior nail, interior pin is positioned at outer pin, and pinning is arranged in the locking nail hole of pin and outer pin, and near-end and far-end are antecurvature respectively, proximal head is infundibulate, and the near-end of interior pin is that short screw is connected with the taper head of a nail.
- 2. pressurization fixing interlocking intramedullary nail according to claim 1 is characterized in that locking nail hole is oblate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99230210 CN2404494Y (en) | 1999-12-03 | 1999-12-03 | Pressing and locking type intramedullary nail |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99230210 CN2404494Y (en) | 1999-12-03 | 1999-12-03 | Pressing and locking type intramedullary nail |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2404494Y true CN2404494Y (en) | 2000-11-08 |
Family
ID=34019340
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99230210 Expired - Fee Related CN2404494Y (en) | 1999-12-03 | 1999-12-03 | Pressing and locking type intramedullary nail |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2404494Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100484489C (en) * | 2002-09-27 | 2009-05-06 | 斯恩蒂斯有限公司 | Intramedullary nail |
| CN103800064A (en) * | 2014-01-22 | 2014-05-21 | 苏州大学 | Double-locking intramedullary nail structure |
| CN107961067A (en) * | 2018-01-12 | 2018-04-27 | 四川大学华西医院 | Lateral inlet tibiobone marrow internal needle |
| CN111728684A (en) * | 2015-06-04 | 2020-10-02 | 爱派司生技股份有限公司 | Fixing device for femoral fracture |
-
1999
- 1999-12-03 CN CN 99230210 patent/CN2404494Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100484489C (en) * | 2002-09-27 | 2009-05-06 | 斯恩蒂斯有限公司 | Intramedullary nail |
| CN103800064A (en) * | 2014-01-22 | 2014-05-21 | 苏州大学 | Double-locking intramedullary nail structure |
| CN103800064B (en) * | 2014-01-22 | 2016-08-17 | 苏州大学 | Double-locking intramedullary nail structure |
| CN111728684A (en) * | 2015-06-04 | 2020-10-02 | 爱派司生技股份有限公司 | Fixing device for femoral fracture |
| CN107961067A (en) * | 2018-01-12 | 2018-04-27 | 四川大学华西医院 | Lateral inlet tibiobone marrow internal needle |
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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 |