CN201631366U - Fastening nail for femoral neck fracture - Google Patents
Fastening nail for femoral neck fracture Download PDFInfo
- Publication number
- CN201631366U CN201631366U CN2010201422737U CN201020142273U CN201631366U CN 201631366 U CN201631366 U CN 201631366U CN 2010201422737 U CN2010201422737 U CN 2010201422737U CN 201020142273 U CN201020142273 U CN 201020142273U CN 201631366 U CN201631366 U CN 201631366U
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- staple
- femoral neck
- fracture
- head
- hole
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Abstract
A fastening nail for femoral neck fracture sequentially comprises a head, a nail body and a tail, wherein the outer surface of the head is provided with screw threads; a holding hole is arranged on the central axis of the tail; the fastening nail is made of material with the mesh porous structure of the osteoid trabecula; the porosity is 50-80%; various pores are uniformly distributed and are communicated; and the aperture is 100-1000 microns. The fastening nail has rough outer surface and high friction coefficient, is suitable for bone ingrowth and has enough space allowing bone ingrowth with the elastic modulus approximate to the human bones. After installation on the patient, the timely fixation can be realized, the intraosseous pressure also can be reduced, the long-term femoral head necrosis is prevented, and the bone healing is promoted.
Description
Technical field
This utility model relates to a kind of staple that is used for fracture of femoral neck, belongs to the orthopedic medical device field.
Background technology
Fracture of femoral neck is a kind of commonly encountered diseases.The old people is because the neck of femur sclerotin is loose fragile, and it is bigger to meet with stresses, and very little rotation external force just may cause fracture.Minority person between twenty and fifty's fracture of femoral neck then is by due to the violence, as Vehicular impact or from high falling.At present, adopt nail for collum femoris,hip to carry out internal fixation operation to the treatment of fracture of femoral neck more, traditional metal nail for collum femoris,hip has forcing screw, three wing nail, hollow double end forcing screw etc., because its elastic modelling quantity is much larger than femur, complication such as nonunion, femur head necrosis very easily take place in postoperative.
The utility model content
The purpose of this utility model is to provide a kind of fracture of femoral neck staple, and this staple has excellent biological compatibility, pore structure that bone grows into and enough spaces can be provided, and have skin-friction coefficient height, constitutionally stable characteristics.
For achieving the above object, this utility model adopts following design:
A kind of fracture of femoral neck staple, described staple are made up of head, nail body and afterbody successively; The outer surface of described head has screw thread, and the central axis of described afterbody is provided with to hold gets the hole, and described staple is made by the material with the bone trabecular mesh structural porous structure of class, and porosity is 50-80%; Each hole uniform distribution and being interconnected, the aperture is the 100-1000 micron.
Fracture of femoral neck staple as above, wherein, the central axis of described staple is provided with a center through hole and runs through described head and nail body successively, and gets the hole with holding of afterbody and be communicated with.
Fracture of femoral neck staple as above, wherein, the porosity of described staple most preferably is 70%.
Aforesaid fracture of femoral neck staple, wherein, the aperture of described staple most preferably is the 450-500 micron.
Fracture of femoral neck staple as above, wherein, the cross section diameter of described afterbody is greater than described head and nail body.
Fracture of femoral neck staple as above, wherein, the described cross section of getting the hole of holding can be quincunx or regular hexagon.
Fracture of femoral neck staple as above, wherein, described staple by titanium alloy powder through the electron beam melting molding.
Fracture of femoral neck staple as above, wherein, described staple can be one-body molded.
The beneficial effects of the utility model are:
Fracture of femoral neck staple of the present utility model has the bone trabecular mesh structural porous structure of class, its outer surface is coarse, the coefficient of friction height, the aperture of its loose structure is the 100-1000 micron, porosity is 50-80%, intercommunication between each micropore, suitable bone is grown into, and the enough spaces that allow bone to grow into are arranged.The elastic modelling quantity of staple is approaching to the marrow.The patient not only can fix after installing immediately, can also reduce intra-osteal pressure, prevents femur head necrosis at a specified future date, promotes knitting.
Description of drawings
Fig. 1 is the cutaway view of this utility model embodiment 1
Fig. 2 is the left view of Fig. 1
The specific embodiment
Below in conjunction with the drawings and specific embodiments this utility model being described further, so that those skilled in the art can clearerly learn the technical solution of the utility model, is not to restriction of the present utility model.
Embodiment 1
The exemplary embodiments of fracture of femoral neck staple of the present utility model as shown in Figure 1.This staple is elongated cylindrical, is made up of head 1, nail body 2 and afterbody 3 successively from front to back.Wherein, this head 1 outer surface has screw thread, and the cross section diameter of nail body 2 can be equal to or slightly less than the cross section diameter of head 1, and the cross section diameter of afterbody 3 is comparatively significantly greater than head 1 and nail body 2.These afterbody 3 central axis are provided with one and hold and get hole 4, and have a central through hole 5 on the whole staple central axis, and this central through hole 5 runs through head 1 and nail body 2, and get hole 4 and be connected with holding.As shown in Figure 2, this is held the cross section of getting hole 4 and is quincunx (also can be hexagon etc.), and its slightly larger in diameter is in the diameter of central through hole 5.Staple integral body of the present utility model through the electron beam melting molding, forms the bone trabecular mesh structural porous structure of similar human body spongy bone by titanium alloy powder.The porosity of staple is about 70%, and each micropore is evenly distributed, and intercommunication each other, and the aperture most preferably is the 450-500 micron.The suitable bone of staple of the present utility model is grown into, and the enough spaces that allow bone to grow into are arranged, and its elastic modelling quantity is near people's bone.The patient not only can fix after installing immediately, can also reduce intra-osteal pressure, prevents femur head necrosis at a specified future date, promotes knitting.
Claims (8)
1. a fracture of femoral neck staple is characterized in that, described staple is made up of head, nail body and afterbody successively; The outer surface of described head has screw thread, and the central axis of described afterbody is provided with to hold gets the hole, and described staple is made by the material with the bone trabecular mesh structural porous structure of class, and porosity is 50-80%; Each hole uniform distribution and being interconnected, the aperture is the 100-1000 micron.
2. fracture of femoral neck staple as claimed in claim 1 is characterized in that, the central axis of described staple is provided with a center through hole and runs through described head and nail body successively, and gets the hole with holding of afterbody and be communicated with.
3. fracture of femoral neck staple as claimed in claim 1 or 2 is characterized in that, the porosity of described staple is 70%.
4. fracture of femoral neck staple as claimed in claim 1 or 2 is characterized in that, the aperture of described staple is the 450-500 micron.
5. fracture of femoral neck staple as claimed in claim 1 or 2 is characterized in that, the cross section diameter of described afterbody is greater than described head and nail body.
6. fracture of femoral neck staple as claimed in claim 1 or 2 is characterized in that, the described cross section of getting the hole of holding is quincunx or regular hexagon.
7. fracture of femoral neck staple as claimed in claim 1 or 2 is characterized in that, described staple by titanium alloy powder through the electron beam melting molding.
8. fracture of femoral neck staple as claimed in claim 1 or 2 is characterized in that described staple is formed in one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201422737U CN201631366U (en) | 2010-03-25 | 2010-03-25 | Fastening nail for femoral neck fracture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201422737U CN201631366U (en) | 2010-03-25 | 2010-03-25 | Fastening nail for femoral neck fracture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201631366U true CN201631366U (en) | 2010-11-17 |
Family
ID=43075837
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201422737U Expired - Lifetime CN201631366U (en) | 2010-03-25 | 2010-03-25 | Fastening nail for femoral neck fracture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201631366U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104586496A (en) * | 2015-02-09 | 2015-05-06 | 张英泽 | Microporous bionic fracture fixing device capable of promoting fracture healing |
| US10363075B2 (en) | 2015-02-09 | 2019-07-30 | Yingze Zhang | Porous bionic internal fixation device for promoting healing of fractured bone |
-
2010
- 2010-03-25 CN CN2010201422737U patent/CN201631366U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104586496A (en) * | 2015-02-09 | 2015-05-06 | 张英泽 | Microporous bionic fracture fixing device capable of promoting fracture healing |
| US10363075B2 (en) | 2015-02-09 | 2019-07-30 | Yingze Zhang | Porous bionic internal fixation device for promoting healing of fractured bone |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 102200 Changping District science and Technology Park, Beijing torch street, No. 30 Patentee after: Tianxinfu (Beijing) medical equipment Limited by Share Ltd Address before: 102200 Changping District science and Technology Park, Beijing torch street, No. 30 Patentee before: Beijing Tian Xin Fu Medical Appliance Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20101117 |
|
| CX01 | Expiry of patent term |