CN204765888U - Metal meets bone screw - Google Patents
Metal meets bone screw Download PDFInfo
- Publication number
- CN204765888U CN204765888U CN201520457087.5U CN201520457087U CN204765888U CN 204765888 U CN204765888 U CN 204765888U CN 201520457087 U CN201520457087 U CN 201520457087U CN 204765888 U CN204765888 U CN 204765888U
- Authority
- CN
- China
- Prior art keywords
- rivet nut
- nail body
- screw thread
- leading portion
- back end
- 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.)
- Active
Links
Abstract
The utility model provides a metal meets bone screw belongs to the orthopedic medical devices field, including the nail body and pin fin, the nail body comprises nail body anterior segment, nail body middle section and the nail body back end of toper structure, and the junction of nail body anterior segment, nail body middle section and nail body back end be the arc surface, and nail body back end links to each other with the pin fin, and the cone angle of nail body anterior segment, nail body middle section and nail body back end reduces in proper order, and nail body anterior segment, nail body middle section and the nail body are equipped with anterior segment screw thread, middle section screw thread and back end screw thread respectively on the back end, and the pitch of anterior segment screw thread, middle section screw thread and back end screw thread reduces in proper order. The utility model discloses simple structure, reasonable in design, the structure that adopts nail body anterior segment, follows closely body middle section and nail body back end to the cone angle of three segment structures is different with pitch, connects bone screw difficult not hard up when fixed, and the reliability that the fracture was fixed is high, has reduced the healing time of fracture, easy operation, and the success rate of operation is high.
Description
Technical field
This utility model relates to orthopaedics medical instruments field, specifically a kind of metal bone screw.
Background technology
In bone surgery, often need to utilize blade plate and bone screw to implement fixing to fracture site.The rivet nut major part of existing bone screw is screwed cylindrical or conical structure, easily bone screws loosen is there is in these bone screws when being fixed fracture site, reduce the reliability of fracture fixation, thus extend the healing time of fracture, the success rate of operation is lower.In order to solve the problem; also the structure of blade plate screw is become comparatively complicated by some; also the comparatively complicated bone screw of these structures usually can be used in the bone surgery of hospital to be coupled together by the bone fractureed; but baroque screw is not only not easy to install; nor easily unload, add operation easier.
Summary of the invention
Problem to be solved in the utility model is: overcome the deficiencies in the prior art, provides a kind of structure simple, reasonable in design, simple to operate, time fixing, bone screw not easily loosens, and the reliability of fracture fixation is high, decrease the healing time of fracture, the metal bone screw that the success rate of operation is high.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of metal bone screw, comprise rivet nut and ailhead, described rivet nut is by the rivet nut leading portion of pyramidal structure, rivet nut stage casing and rivet nut back segment are formed, described rivet nut leading portion, the junction of rivet nut stage casing and rivet nut back segment is arc surface, described rivet nut back segment is connected with ailhead, described rivet nut leading portion, the cone angle of rivet nut stage casing and rivet nut back segment reduces successively, described rivet nut leading portion, rivet nut stage casing and rivet nut back segment are respectively equipped with leading portion screw thread, mid-section threads and back segment screw thread, described leading portion screw thread, the pitch of mid-section threads and back segment screw thread reduces successively.
Further, described ailhead is spherical.
Further, the top center place of described ailhead has a groove.
Further, described groove is tetragon, hexagon, cross or quincunx.
Further, the cone angle of described rivet nut leading portion is 45-60 °.
Further, the cone angle in described rivet nut stage casing is 25-40 °.
Further, the cone angle of described rivet nut leading portion is 10-20 °.
Further, the material of described rivet nut and ailhead is Ti-6Al-4V, Ti-6Al-7Nb or 00Cr18Ni14Mo3.
The advantage that this utility model has and good effect are:
This utility model structure is simple, reasonable in design, adopt the structure of rivet nut leading portion, rivet nut stage casing and rivet nut back segment, and the cone angle of three-stage structure is different with pitch, time fixing, bone screw not easily loosens, and the reliability of fracture fixation is high, decreases the healing time of fracture, simple to operate, the success rate of operation is high.
Accompanying drawing explanation
Fig. 1 is the structural representation of embodiment one.
Fig. 2 is the structural representation of the ailhead of embodiment one.
Fig. 3 is the structural representation of the ailhead of embodiment two.
Fig. 4 is the structural representation of the ailhead of embodiment three.
In figure: 1, rivet nut; 2, ailhead; 3, rivet nut leading portion; 4, rivet nut stage casing; 5, rivet nut back segment; 6, leading portion screw thread; 7, mid-section threads; 8, back segment screw thread; 9, groove.
Detailed description of the invention
Embodiment one
As Fig. 1, shown in 2, a kind of metal bone screw, comprise rivet nut 1 and spherical ailhead 2, the material of rivet nut 1 and ailhead 2 is Ti-6Al-4V, rivet nut 1 is by the rivet nut leading portion 3 of pyramidal structure, rivet nut stage casing 4 and rivet nut back segment 5 are formed, rivet nut leading portion 3, the junction of rivet nut stage casing 4 and rivet nut back segment 5 is arc surface, rivet nut back segment 5 is connected with ailhead 2, rivet nut leading portion 3, the cone angle of rivet nut stage casing 4 and rivet nut back segment 5 reduces successively, the cone angle of rivet nut leading portion 3 is 45 °, the cone angle in rivet nut stage casing 4 is 25 °, the cone angle of rivet nut leading portion 5 is 10 °, rivet nut leading portion 3, rivet nut stage casing 4 and rivet nut back segment 5 are respectively equipped with leading portion screw thread 6, mid-section threads 7 and back segment screw thread 8, leading portion screw thread 6, the pitch of mid-section threads 7 and back segment screw thread 8 reduces successively, the top center place of ailhead 2 has a hexagonal indentations 9.
The work process of the present embodiment: during use, the rivet nut front end 3 of rivet nut 1, rivet nut stage casing 4 and rivet nut rear end 5 are successively screwed in skeleton, because the cone angle of rivet nut leading portion 3, rivet nut stage casing 4 and rivet nut back segment 5 reduces successively, and the cone angle of three-stage structure is different with pitch, time fixing, bone screw not easily loosens, and the reliability of fracture fixation is high, decreases the healing time of fracture, simple to operate, the success rate of operation is high.
Embodiment two
As shown in Figure 3, a kind of metal bone screw, comprise rivet nut 1 and spherical ailhead 2, the material of rivet nut 1 and ailhead 2 is Ti-6Al-7Nb, rivet nut 1 is by the rivet nut leading portion 3 of pyramidal structure, rivet nut stage casing 4 and rivet nut back segment 5 are formed, rivet nut leading portion 3, the junction of rivet nut stage casing 4 and rivet nut back segment 5 is arc surface, rivet nut back segment 5 is connected with ailhead 2, rivet nut leading portion 3, the cone angle of rivet nut stage casing 4 and rivet nut back segment 5 reduces successively, the cone angle of rivet nut leading portion 3 is 50 °, the cone angle in rivet nut stage casing 4 is 30 °, the cone angle of rivet nut leading portion 5 is 15 °, rivet nut leading portion 3, rivet nut stage casing 4 and rivet nut back segment 5 are respectively equipped with leading portion screw thread 6, mid-section threads 7 and back segment screw thread 8, leading portion screw thread 6, the pitch of mid-section threads 7 and back segment screw thread 8 reduces successively, the top center place of ailhead 2 has a cross groove 9.
The work process of the present embodiment: with embodiment one.
Embodiment three
As shown in Figure 4, a kind of metal bone screw, comprise rivet nut 1 and spherical ailhead 2, the material of rivet nut 1 and ailhead 2 is 00Cr18Ni14Mo3, rivet nut 1 is by the rivet nut leading portion 3 of pyramidal structure, rivet nut stage casing 4 and rivet nut back segment 5 are formed, rivet nut leading portion 3, the junction of rivet nut stage casing 4 and rivet nut back segment 5 is arc surface, rivet nut back segment 5 is connected with ailhead 2, rivet nut leading portion 3, the cone angle of rivet nut stage casing 4 and rivet nut back segment 5 reduces successively, the cone angle of rivet nut leading portion 3 is 60 °, the cone angle in rivet nut stage casing 4 is 40 °, the cone angle of rivet nut leading portion 5 is 20 °, rivet nut leading portion 3, rivet nut stage casing 4 and rivet nut back segment 5 are respectively equipped with leading portion screw thread 6, mid-section threads 7 and back segment screw thread 8, leading portion screw thread 6, the pitch of mid-section threads 7 and back segment screw thread 8 reduces successively, the top center place of ailhead 2 has a tetragon groove 9.
The work process of the present embodiment: with embodiment one.
Above embodiment of the present utility model has been described in detail, but described content being only preferred embodiments of the present utility model, can not being considered to for limiting practical range of the present utility model.All equalizations done according to this utility model application range change and improve, and all should still belong within patent covering scope of the present utility model.
Claims (8)
1. a metal bone screw, comprise rivet nut and ailhead, it is characterized in that: described rivet nut is made up of the rivet nut leading portion of pyramidal structure, rivet nut stage casing and rivet nut back segment, the junction of described rivet nut leading portion, rivet nut stage casing and rivet nut back segment is arc surface, described rivet nut back segment is connected with ailhead, the cone angle of described rivet nut leading portion, rivet nut stage casing and rivet nut back segment reduces successively, described rivet nut leading portion, rivet nut stage casing and rivet nut back segment are respectively equipped with leading portion screw thread, mid-section threads and back segment screw thread, the pitch of described leading portion screw thread, mid-section threads and back segment screw thread reduces successively.
2. a kind of metal bone screw according to claim 1, is characterized in that: described ailhead is spherical.
3. a kind of metal bone screw according to claim 1 and 2, is characterized in that: the top center place of described ailhead has a groove.
4. a kind of metal bone screw according to claim 3, is characterized in that: described groove is tetragon, hexagon, cross or quincunx.
5. a kind of metal bone screw according to claim 1, is characterized in that: the cone angle of described rivet nut leading portion is 45-60 °.
6. a kind of metal bone screw according to claim 1, is characterized in that: the cone angle in described rivet nut stage casing is 25-40 °.
7. a kind of metal bone screw according to claim 1, is characterized in that: the cone angle of described rivet nut leading portion is 10-20 °.
8. a kind of metal bone screw according to claim 1, is characterized in that: the material of described rivet nut and ailhead is Ti-6Al-4V, Ti-6Al-7Nb or 00Cr18Ni14Mo3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520457087.5U CN204765888U (en) | 2015-06-29 | 2015-06-29 | Metal meets bone screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520457087.5U CN204765888U (en) | 2015-06-29 | 2015-06-29 | Metal meets bone screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204765888U true CN204765888U (en) | 2015-11-18 |
Family
ID=54506033
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520457087.5U Active CN204765888U (en) | 2015-06-29 | 2015-06-29 | Metal meets bone screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204765888U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104921801A (en) * | 2015-06-29 | 2015-09-23 | 北京贝思达生物技术有限公司 | Metal bone screw |
| WO2023109432A1 (en) * | 2021-12-17 | 2023-06-22 | 苏州景昱医疗器械有限公司 | Skull pin and brain electrode fixation assembly |
-
2015
- 2015-06-29 CN CN201520457087.5U patent/CN204765888U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104921801A (en) * | 2015-06-29 | 2015-09-23 | 北京贝思达生物技术有限公司 | Metal bone screw |
| WO2023109432A1 (en) * | 2021-12-17 | 2023-06-22 | 苏州景昱医疗器械有限公司 | Skull pin and brain electrode fixation assembly |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207949887U (en) | A kind of orthopedic internal fixation system of modified form pedicle screw stick | |
| CN204765888U (en) | Metal meets bone screw | |
| CN104224291A (en) | Novel combined-type calcaneal-fracture internal fixation steel plate | |
| CN204765887U (en) | Hollow rivet | |
| CN103800065A (en) | Malleolus medialis fixing steel plate system | |
| CN104083201B (en) | A kind of distal radius supports locking steel plate | |
| CN207236837U (en) | Bone screw | |
| CN202060854U (en) | Bone fracture plate with combination locking holes | |
| CN201642297U (en) | Femoral neck screw used for treatment of proximal femoral fractures | |
| CN204468250U (en) | A kind of hollow pressurization nail | |
| CN104921801A (en) | Metal bone screw | |
| CN201384552Y (en) | Osseous pin capable of being broken by pressure | |
| CN208974076U (en) | The inside and outside double fixed systems of fracture | |
| CN204971551U (en) | Hollow compression screw in hole is let out to double helix | |
| CN202714915U (en) | Bone-setting screw | |
| CN203953785U (en) | A kind of capitulum radii locking steel plate | |
| CN208974080U (en) | The inside and outside double fixing screws of fracture | |
| CN206424138U (en) | One kind is anti-to back-out bone screw | |
| CN205054409U (en) | Firm support type coaptation board | |
| CN204931822U (en) | Locking compress bridge joining composite internal fixation system | |
| CN203953784U (en) | A kind of distal radius is supported locking steel plate | |
| CN204219011U (en) | A kind of combined type gas-liquid-solid fixed system | |
| CN204765875U (en) | Immediately, pressurize hip screw steel sheet and system | |
| CN204951130U (en) | Orthopedics implant cable device | |
| CN210843254U (en) | Operation anchor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |