CN2640425Y - Proximal intramedullary nail of femur - Google Patents
Proximal intramedullary nail of femur Download PDFInfo
- Publication number
- CN2640425Y CN2640425Y CN 03269742 CN03269742U CN2640425Y CN 2640425 Y CN2640425 Y CN 2640425Y CN 03269742 CN03269742 CN 03269742 CN 03269742 U CN03269742 U CN 03269742U CN 2640425 Y CN2640425 Y CN 2640425Y
- Authority
- CN
- China
- Prior art keywords
- nail
- lag screw
- anteversion
- utility
- hole
- 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
Links
- 210000000689 upper leg Anatomy 0.000 title description 5
- 210000002436 femur neck Anatomy 0.000 abstract description 6
- 238000005452 bending Methods 0.000 abstract description 2
- 210000000988 bone and bone Anatomy 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 abstract description 2
- 238000001356 surgical procedure Methods 0.000 abstract description 2
- 239000007943 implant Substances 0.000 abstract 1
- 208000010392 Bone Fractures Diseases 0.000 description 3
- 206010017076 Fracture Diseases 0.000 description 3
- 206010020100 Hip fracture Diseases 0.000 description 2
- 206010025482 malaise Diseases 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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- Surgical Instruments (AREA)
Abstract
The utility model relates to a proximal femoral nail, belonging to a bone surgery medical instrument technology field, aiming at providing a proximal femoral nail which can make lag screws implant fast and correctly along the direction of femoral neck anteversion. The utility model adopts the technical proposal that the nail comprises a nail body and lag screw holes together with locking screw holes which are both arranged at the nail body; anteversion is arranged at the lag screw holes; the axis and the coronal surface of the lag screw hole has the angle Alpha of eight to eighteen degrees. For the utility model which changes the present direction of gamma nail lag screw holes into the same anteversion direction, when the abduction angle of the small gamma nail is at the inside of the coronal surface, the directions of the lag screw hole axis and the anteversion are the same. During operation, when the nail radian of the long gamma nail and the physiological bending radian of the femoral nail are the same, the lag screw can be implanted fast and correctly along the direction of femoral neck anteversion. The utility model is very suitable for curing intertrochanteric and tuberosity fractures.
Description
Technical field
This utility model relates to a kind of PFN, belongs to the Orthopeadic Surgery technical field of medical instruments.
Background technology
Along with the development of aged tendency of population, femoral intertrochanteric, subtrochanteric fracture sickness rate improve year by year.Clinical practice proves that it is better that the employing internal fixation operation of cutting and resetting is treated this sick effect.Normal clinically in recent years gamma type femoral interlocking nail treatment femoral intertrochanteric with lock, the subtrochanteric fracture that uses, this gamma nail is less to the fracture site influence, and employing marrow internal fixation, fixed axis is near the axle center of femur, the tensile stress that bears, compressive stress minimum, fracture site stress shielding minimum can realize broken ends of fractured bone pressurization, has lot of advantages.But commercially available gamma nail and matching used sighting device all do not considered anteversion of femoral neck at present, when implanting lag screw, must press down location guide, can be along correct top rake implanted femur neck (this moment, lag screw was positioned at the axle center of neck of femur).In the operation process, press down location guide and not only operate very inconvenience, and far-end T shape locating rod will point to the arcuate segments of femur front and lateral surface intersection, when making far-end T shape locating rod location, the tip easily forwards or the side slide, cause the location inaccurate, pinning is implanted difficulty.The angle of splay of existing short gamma nail (claiming the standard gamma nail again) and supporting with it lag screw thereof, the axis of pinning, the sight hole axis of sighting device all at grade, if lag screw is implanted by the ideal orientation of top rake, it is inboard before then top, the angle of angle of splay is pointed to, can cause and insert difficulty, and do not meet biomechanical principle, the outside before the radian of long gamma nail (claiming the lengthening gamma nail again) also will point to also can be caused and be inserted difficulty.
Summary of the invention
Technical problem to be solved in the utility model provides a kind of quick PFN of accurately implanting by the anteversion of femoral neck direction of lag screw that makes.
It is as follows to address the above problem the technical scheme that is adopted:
A kind of PFN, it is the improvement on existing gamma type femoral interlocking nail basis, forms and comprises the nail body, and the nail body is provided with lag screw hole and locking nail hole, said lag screw hole is provided with top rake, and the axis in lag screw hole and the angle α between coronalplane are 8 °-18 °.
Above-mentioned PFN comprises short gamma nail and long gamma nail, and the locking nail hole of said short gamma nail is two distal locking nail holes, and one of them is a circular hole, and another is a slotted hole, and the axis of distal locking nail hole is in coronalplane; The locking nail hole of said long gamma nail is two or one, is located at nail body far-end, and the axis of distal locking nail hole is in coronalplane, and nail body arc pushes up a side and is provided with locating platform.
This utility model has changed the direction in existing gamma nail lag screw hole, makes the direction in lag screw hole identical with the top rake direction, and when the angle of splay of axle gamma nail was in the coronalplane when performing the operation, the direction of lag screw axially bored line was the direction of top rake.In when operation, when long gamma ailing body arc portion was consistent with the physiological bending portion of femur, lag screw can be implanted along the anteversion of femoral neck direction rapidly and accurately.Especially be suitable for treating femoral intertrochanteric, the inferior fracture use of tuberosity.
Description of drawings
Fig. 1 is the front view of the short gamma nail in a kind of embodiment of this utility model right side;
Fig. 2 is the left view of Fig. 1;
Fig. 3 is the vertical view of Fig. 1;
Fig. 4 is the front view of the long gamma nail in the another kind of embodiment right side of this utility model;
Fig. 5 is the left view of Fig. 4;
Fig. 6 is the vertical view of Fig. 4.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail by embodiment:
Referring to accompanying drawing, this utility model comprises nail body 1,8, and nail body 1,8 is provided with lag screw hole 2 and locking nail hole, lag screw hole 2 is provided with top rake α, and the angle α that the axis 6 in lag screw hole 2 and coronalplane are 5 is 8 °-18 °, and the best is 12 °, to meet people's physiological feature.
Fig. 1-shown in Figure 3, when this utility model during for short gamma nail, its locking nail hole is two distal locking nail holes 3,4, and one of them 3 is a circular hole, and another 4 is a slotted hole, and the axis of locking nail hole 3,4 is in coronalplane 5.
Referring to Fig. 4-Fig. 6, when this utility model was long gamma nail, its locking nail hole was two distal locking nail holes 9 again, and the axis of distal locking nail hole is in coronalplane 5, and nail body 8 arcs push up a side and are provided with locating platform 7, and locating platform 7 is between two distal locking nail holes 9.
Claims (4)
1. PFN, it comprises the nail body, the nail body is provided with lag screw hole and locking nail hole, it is characterized in that said lag screw hole [2] is provided with top rake α, and the axis [6] of lag screw hole [2] and the angle α between coronalplane [5] are 8 °-18 °.
2. PFN according to claim 1 is characterized in that, described locking nail hole is two distal locking nail holes [3], [4], and one of them is circular hole [3], and another is slotted hole [4], and the axis of distal locking nail hole [3], [4] is in coronalplane [5].
3. PFN according to claim 1 is characterized in that, described locking nail hole [9] is one, is located at nail body far-end, and the axis of distal locking nail hole [9] is in coronalplane [5], and nail body [8] arc pushes up a side and is provided with locating platform [7].
4. PFN according to claim 1, it is characterized in that, described locking nail hole [9] is two, be located at nail body far-end, the axis of distal locking nail hole [9] is in coronalplane [5], nail body [8] arc pushes up a side and is provided with locating platform [7], and this locating platform [7] is between two distal locking nail holes [9].
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03269742 CN2640425Y (en) | 2003-07-29 | 2003-07-29 | Proximal intramedullary nail of femur |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03269742 CN2640425Y (en) | 2003-07-29 | 2003-07-29 | Proximal intramedullary nail of femur |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2640425Y true CN2640425Y (en) | 2004-09-15 |
Family
ID=34300137
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03269742 Expired - Fee Related CN2640425Y (en) | 2003-07-29 | 2003-07-29 | Proximal intramedullary nail of femur |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2640425Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101779981A (en) * | 2010-02-25 | 2010-07-21 | 张磊 | Locking gamma nail |
| CN101601605B (en) * | 2009-07-14 | 2011-01-05 | 常州市康辉医疗器械有限公司 | Intramedullary nail fixation device for fractured near end of thighbone |
| CN105997216A (en) * | 2016-06-29 | 2016-10-12 | 江苏艾迪尔医疗科技股份有限公司 | Ulna intramedullary nail |
-
2003
- 2003-07-29 CN CN 03269742 patent/CN2640425Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101601605B (en) * | 2009-07-14 | 2011-01-05 | 常州市康辉医疗器械有限公司 | Intramedullary nail fixation device for fractured near end of thighbone |
| WO2011006413A1 (en) * | 2009-07-14 | 2011-01-20 | 常州市康辉医疗器械有限公司 | Intramedullary nail fixing device for proximal femoral fracture |
| CN101779981A (en) * | 2010-02-25 | 2010-07-21 | 张磊 | Locking gamma nail |
| CN105997216A (en) * | 2016-06-29 | 2016-10-12 | 江苏艾迪尔医疗科技股份有限公司 | Ulna 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 |