CN204158480U - A kind of Patella fracture Internal fixation pin - Google Patents
A kind of Patella fracture Internal fixation pin Download PDFInfo
- Publication number
- CN204158480U CN204158480U CN201420632996.3U CN201420632996U CN204158480U CN 204158480 U CN204158480 U CN 204158480U CN 201420632996 U CN201420632996 U CN 201420632996U CN 204158480 U CN204158480 U CN 204158480U
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- locking pin
- needle point
- pin body
- backshank
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Abstract
The utility model discloses a kind of Patella fracture Internal fixation pin, comprise locking pin body (1), described locking pin body sets gradually needle point section (2), thread segment (3) and backshank section (4) along axis; The profile of described needle point section is cone shape, and formed by the cone bus of described needle point section and the axis of described locking pin body, angle is 15 °; And described needle point section has the first circular hole (5); The end of described backshank section is provided with pin cap (6), and needle point section described in described backshank Duan Shangcong sets gradually to the direction of described pin cap expands limiting section (7) and recess (8).After this utility model locking pin squeezes into skeleton, effectively can not only avoid the generation retreating phenomenon; And excessive insertion can also be avoided squeezing in bone processes.
Description
Technical field
This utility model belongs to medical instruments field, particularly, the utility model relates to a kind of Patella fracture Internal fixation pin.
Background technology
Patella is the maximum sesamoid bone of whole body, by great function in knee joint physiological movement.The incidence rate of Patella fracture accounts for 1.65% of whole body fracture, common with person between twenty and fifty.At present along with the progress of society, the development of Modern Traffic, the actual generation of Patella fracture has exceeded report incidence rate.
At present, clinically for the patient of Patella fracture, be generally squeeze into patella at patella place locking pin, coordinate extenal fixation lock to fix.After existing locking pin squeezes into skeleton, have through often after a period of time and retreat phenomenon generation.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of Patella fracture Internal fixation pin.After this utility model locking pin squeezes into skeleton, effectively can not only avoid the generation retreating phenomenon; And excessive insertion can also be avoided squeezing in bone processes.
It is realize by the following technical solutions that this utility model solves the problems of the technologies described above: a kind of Patella fracture Internal fixation pin, comprises locking pin body, and described locking pin body sets gradually needle point section, thread segment and backshank section along axis; The profile of described needle point section is cone shape, and formed by the cone bus of described needle point section and the axis of described locking pin body, angle is 15 °; And described needle point section has the first circular hole; The end of described backshank section is provided with pin cap, and needle point section described in described backshank Duan Shangcong sets gradually to the direction of described pin cap expands limiting section and recess; The described limiting section that expands is formed by the rat of described backshank section, described in expand the center of limiting section the second circular hole be set; Described recess is caved inward by the surface of described backshank section and is formed; The described limiting section that expands accounts for 4/5ths of described locking pin body overall length apart from the length of described needle point section end; The length of described needle point section accounts for 1/5th of described locking pin body overall length.
In technique scheme, needle point section and thread segment set gradually, and locking pin can be made to squeeze into skeleton fast on the one hand; After locking pin can being made again to squeeze into skeleton on the other hand, increase the hold between locking pin and skeleton, avoid the generation retreating phenomenon.The design of limiting section of expanding can prevent locking pin to be exceedingly inserted in skeleton.
When using this utility model, pin cap portion is connected with have an injection device or drilling equipment; Needle point section aims at the mark a little, is squeezed into by locking pin.Generally, to expand limiting section time stop squeeze into.Then the part of backshank section and pin cap thereof is cut away from the position of recess; Then the first circular hole is each passed through with steel wire and the second circular hole carries out drawing and fixing
Further technical scheme, the overall length of described locking pin body is 25mm.
Further technical scheme, the length of described thread segment accounts for 1/5th of described locking pin body overall length.
Further technical scheme, described recess and described beeline of expanding limiting section are 1 ~ 2mm.When cutting away one section that expands between limiting section and pin cap, the only length of remaining 1 ~ 2mm, can friction between effective less locking pin and cartilaginous tissue.
Further technical scheme, described locking pin body adopts titanium alloy material preparation.
Further technical scheme, described locking pin body arranges graduation mark along axial location.The arranging of graduation mark medical worker can be facilitated immediately the to understand degree of depth that locking pin squeezes into skeleton.
Compared with prior art, the beneficial effect had is this utility model: after this utility model locking pin squeezes into skeleton, effectively can not only avoid the generation retreating phenomenon; And excessive insertion can also be avoided squeezing in bone processes.
Accompanying drawing explanation
This utility model is described in detail below in conjunction with the drawings and specific embodiments;
Fig. 1 is the structural representation of embodiment 1.
The component names that in figure, each Reference numeral is corresponding is: 1-locking pin body; 2-needle point section; 3-thread segment; 4-backshank section; 5-first circular hole; 6-pin cap; 7-expands limiting section; 8-recess; 9-second circular hole.
detailed description of the invention
The technological means realized for making this utility model, creation characteristic, reaching object and effect is easy to understand, below in conjunction with detailed description of the invention, setting forth this utility model further.
Embodiment 1
A kind of Patella fracture Internal fixation pin, comprise locking pin body 1, described locking pin body sets gradually needle point section 2, thread segment 3 and backshank section 4 along axis; The profile of described needle point section is cone shape, and formed by the cone bus of described needle point section and the axis of described locking pin body, angle α is 15 °; And described needle point section has the first circular hole 5; The end of described backshank section is provided with pin cap 6, and needle point section described in described backshank Duan Shangcong sets gradually to the direction of described pin cap expands limiting section 7 and recess 8; The described limiting section that expands is formed by the rat of described backshank section, described in expand the center of limiting section the second circular hole 9 be set; Described recess is caved inward by the surface of described backshank section and is formed; The described limiting section that expands accounts for 4/5ths of described locking pin body overall length apart from the length of described needle point section 2 end; The length of described needle point section accounts for 1/5th of described locking pin body overall length.
In the present embodiment, the overall length of locking pin body 1 is 25mm.The length of described thread segment 3 accounts for 1/5th of described locking pin body overall length.Described recess 8 is 1 ~ 2mm with described beeline of expanding limiting section 7.Described locking pin body 1 adopts titanium alloy material to prepare.Described locking pin body 1 arranges graduation mark along axial location.
Wherein, the limiting section that expands described in refers to apart from the length of described needle point section 2 end and expands the center of limiting section and the length a of described needle point section 2 end.
More than show and describe ultimate principle of the present utility model and principal character and advantage of the present utility model.The technical staff of the industry should understand; this utility model is not restricted to the described embodiments; what describe in above-described embodiment and description just illustrates principle of the present utility model; under the prerequisite not departing from this utility model spirit and scope; this utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed this utility model.The claimed scope of this utility model is defined by appending claims and equivalent thereof.
Claims (6)
1. a Patella fracture Internal fixation pin, is characterized in that, comprises locking pin body (1), and described locking pin body sets gradually needle point section (2), thread segment (3) and backshank section (4) along axis; The profile of described needle point section is cone shape, and formed by the cone bus of described needle point section and the axis of described locking pin body, angle is 15 °; And described needle point section has the first circular hole (5); The end of described backshank section is provided with pin cap (6), and needle point section described in described backshank Duan Shangcong sets gradually to the direction of described pin cap expands limiting section (7) and recess (8); The described limiting section that expands is formed by the rat of described backshank section, described in expand the center of limiting section the second circular hole (9) be set; Described recess is caved inward by the surface of described backshank section and is formed; The described limiting section that expands accounts for 4/5ths of described locking pin body overall length apart from the length of described needle point section (2) end; The length of described needle point section accounts for 1/5th of described locking pin body overall length.
2. a kind of Patella fracture Internal fixation pin according to claim 1, is characterized in that, the overall length of described locking pin body (1) is 25mm.
3. a kind of Patella fracture Internal fixation pin according to claim 2, is characterized in that, the length of described thread segment (3) accounts for 1/5th of described locking pin body overall length.
4. a kind of Patella fracture Internal fixation pin according to claim 3, is characterized in that, described recess (8) and described beeline of expanding limiting section (7) are 1 ~ 2mm.
5. a kind of Patella fracture Internal fixation pin according to claim 4, is characterized in that, described locking pin body (1) adopts titanium alloy material preparation.
6. a kind of Patella fracture Internal fixation pin according to claim 4, is characterized in that, described locking pin body (1) arranges graduation mark along axial location.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420632996.3U CN204158480U (en) | 2014-10-29 | 2014-10-29 | A kind of Patella fracture Internal fixation pin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420632996.3U CN204158480U (en) | 2014-10-29 | 2014-10-29 | A kind of Patella fracture Internal fixation pin |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204158480U true CN204158480U (en) | 2015-02-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420632996.3U Active CN204158480U (en) | 2014-10-29 | 2014-10-29 | A kind of Patella fracture Internal fixation pin |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204158480U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104644256A (en) * | 2015-03-13 | 2015-05-27 | 邱正奭 | Internal fixation hollow needle for patellar fracture |
-
2014
- 2014-10-29 CN CN201420632996.3U patent/CN204158480U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104644256A (en) * | 2015-03-13 | 2015-05-27 | 邱正奭 | Internal fixation hollow needle for patellar fracture |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |