CN201642284U - Combined clavicle intramedullary nail - Google Patents
Combined clavicle intramedullary nail Download PDFInfo
- Publication number
- CN201642284U CN201642284U CN2010201684551U CN201020168455U CN201642284U CN 201642284 U CN201642284 U CN 201642284U CN 2010201684551 U CN2010201684551 U CN 2010201684551U CN 201020168455 U CN201020168455 U CN 201020168455U CN 201642284 U CN201642284 U CN 201642284U
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- nail
- overcoat
- abutting end
- joint end
- screwed
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Abstract
The utility model discloses a combined clavicle intramedullary nail for bone surgery, comprising an inner nail and a jacket nail with an inner hole, wherein one end of the jacket nail is provided with a first joint end with an external thread; one end of the inner nail is provided with a second joint end with an external thread; the thread pitch of the external thread of the first joint end is larger than that of the second joint end; the inner nail passes through the inner hole of the jacket nail and is in threaded connection with an inner-wall thread at the first joint end of the jacket nail; and the second joint end of the inner nail extends out of the jacket nail. The utility model solves the problem that a fixation technology adopted by the current clavicle fracture surgery can not generate pressure stress, achieves firm fixation on broken bones, and has simple operation, safety and rapidness as well as more convenient taking out.
Description
Technical field
This utility model relates to technical field of medical instruments, especially a kind of combined type clavicular intramedullary pin that is used for the operation of human body clavicle.
Background technology
Clavicular fracture is one of clinical common fracture, and such fracture is mainly in 1/3 position, clavicle China and foreign countries.When the doctor undergos surgery to this, for the type surgical treatment of fracture, adopt Kirschner wire and reconstruction plate internal fixation treatment method at present, the Kirschner wire internal fixation treatment is simple to operate, safe, quick more, but it is fixing strong inadequately, and sliding nail and broken needle phenomenon easily take place; The reconstruction plate internal fixation treatment is fixing comparatively strong, but its operation relative complex difficulty, and can form more eye-catching skin bulge and cicatrix in patient's surface after fixing, especially obvious in summer especially.
The utility model content
The technical problems to be solved in the utility model is: overcome the deficiency in the prior art, a kind of combined type clavicular intramedullary pin that is used for the clavicular fracture operation is provided, solve the problem that technique for fixing that the operation of present clavicular fracture adopted can not produce compressive stress, reach the strong of knochenbruch fixed, and simple to operate, safe and efficient, meet the less invasive techniques requirement.
The technical scheme that its technical problem that solves this utility model adopts is: a kind of combined type clavicular intramedullary pin, comprise overcoat nail and interior nail with endoporus, overcoat is followed closely an end and is had and be with externally threaded first abutting end, interior nail one end has is with externally threaded second abutting end, and the external screw thread pitch of first abutting end is greater than the external screw thread pitch of second abutting end, interior nail passes the endoporus of overcoat nail and is connected with the inner thread of overcoat nail at the first abutting end place, and second abutting end of interior nail stretches out the overcoat nail.
For conveniently turning the overcoat nail, described overcoat nail has the outer section of being screwed into that is used to turn the overcoat nail in the end of first abutting end.
Further, the radial section of the described outer section of being screwed into is a regular polygon.
For nail in convenient is screwed into the overcoat nail, described in nail other end end have be used to turn in nail in the section of being screwed into.
Preferably, the regular polygon of nail cylindrical in the radial section of the section of being screwed into is connected in being in described.
The beneficial effects of the utility model are: the socket combination of nail and overcoat nail in this utility model adopts, be fixed in the cortical bone of clavicle, has preferable anti-slip effect, because overcoat is followed closely the thread pitch of the thread pitch of first abutting end greater than second abutting end of interior nail, the clavicle of fracture is after engaging locking, utilize the poor of two pitch, can play automatic pressurization to fracture, make fracture end produce compressive stress, to promote the healing early of fracture, simultaneously after union of fracture, interior nail and overcoat nail can take out respectively, can not produce shear stress and pull the clavicle that has been almost recovered fracture end, the intramedullary pin of this structure is simple to operate, and be safe and efficient, fixed effect is good, can reduce the subject discomfort sense, wound is less during use, can not stay tangible cicatrix in the patient surface.
Description of drawings
Below in conjunction with drawings and embodiments this utility model is further specified.
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the left view of Fig. 1.
1. overcoats are followed closely in 11. endoporus, 12. first abutting ends, the 13. outer sections of being screwed into 2. and are followed closely the section of being screwed in 21. second abutting ends 22. among the figure
The specific embodiment.
In conjunction with the accompanying drawings this utility model is further described now.The sketch map that these accompanying drawings are simplification only illustrates basic structure of the present utility model in a schematic way, so it only shows the formation relevant with this utility model.
A kind of combined type clavicular intramedullary pin that is used for the clavicular fracture operation as depicted in figs. 1 and 2, combine by nail 2 sockets in 1 and one of the overcoat nail of a band endoporus 11, overcoat is followed closely 1 one ends for being with externally threaded first abutting end 12, interior nail 2 one ends are for being with externally threaded second abutting end 21, in order to engage the clavicle of fracture respectively, the external screw thread pitch of first abutting end 12 is greater than the external screw thread pitch of second abutting end 21, in the present embodiment, the external screw thread pitch of first abutting end 12 is 0.8mm, the external screw thread pitch of second abutting end 21 is 0.5mm, in nail 2 pass overcoat nail 1 endoporus 11 and with overcoat nail 1 at the inwall at first abutting end, 12 places by being threaded, the thread rotary orientation that first abutting end 12 of connecting thread herein and overcoat nail 1 and second abutting end 21 of interior nail 2 go out is identical, second abutting end 21 of interior nail 2 stretches out the other end that overcoat is followed closely 1 endoporus 11, overcoat nail 1 has the outer section of being screwed into 13 that is used to turn overcoat nail 1 in the end of first abutting end 12, these the outer section of being screwed into 13 diameters are a bit larger tham overcoat and follow closely 1 body diameter, be that a radial section is orthohexagonal six prisms, be similar to the hexagonal (hexagon)nut head, also can be the quadrangular shape of square sectional, perhaps other similarly can make things convenient for the shape of rotating jacket nail 1, in nail 2 be positioned at that to have radial section with overcoat nail 1 an end end that is threaded be the orthohexagonal hexa-prism section of being screwed into 22, can certainly be triangular prism or quadrangular shape, convenient in nail 2 be screwed in the endoporus 11 of overcoat nail 1 by being threaded.
When this utility model uses, according to the patient the size of disconnected clavicle place medullary cavity (but before the art, measure in the art), select suitable overcoat nail 1 and interior nail 2, the section of being screwed into 22 of hexa-prism on the nail 2 in turning, interior nail 2 and overcoat nail 1 is combined into one by being threaded, hole in patient's injury of the bone outside by operation in advance, then the intramedullary pin that combines is screwed in medullary cavity from drill hole, the external screw thread at two is fixed in cortical bone, because overcoat nail 1 has good guiding and fixation, and interior nail 2 has support and fixation, therefore can be with the clavicle good bond locking on request of both sides fracture, fracture is in conjunction with after locking, utilize the outer section of being screwed into 13 can continue to turn overcoat nail 1, because overcoat nail 1 is to be threaded with interior nail 2, simultaneously also be because the external screw thread pitch of first abutting end 12 is 1.6 times of external screw thread pitch of second abutting end 21, when turning overcoat nail 1 slightly, interior nail 2 can be followed closely the reverse fast moving of 1 direction towards overcoat, can produce automatic pressurization to the fracture that is connected thus, make fracture end produce compressive stress, help union of fracture.Combined type clavicular intramedullary pin described in the utility model, its overcoat nail 1 after union of fracture can take out respectively with interior nail 2, can not produce shear stress and pull the clavicle that has been almost recovered fracture, wound is less when using simultaneously, need not as reconstruction plate is fixing, to open very big otch, can not stay tangible cicatrix in the patient surface.
Above-mentioned embodiment only is explanation technical conceive of the present utility model and characteristics; its purpose is to allow the personage that is familiar with this technology can understand content of the present utility model and is implemented; can not limit protection domain of the present utility model with this; all equivalences of being done according to this utility model spirit change or modify, and all should be encompassed in the protection domain of the present utility model.
Claims (5)
1. combined type clavicular intramedullary pin, comprise have endoporus overcoat nail (1) and the interior nail (2) of (11), it is characterized in that: overcoat nail (1) one end has is with externally threaded first abutting end (12), interior nail (2) one ends have is with externally threaded second abutting end (21), and the external screw thread pitch of first abutting end (12) is greater than the external screw thread pitch of second abutting end (21), interior nail (2) passes the endoporus (11) of overcoat nail (1) and follows closely the inner thread of (1) locating at first abutting end (12) with overcoat and is connected, and second abutting end (21) of interior nail (2) stretches out overcoat nail (1).
2. combined type clavicular intramedullary pin according to claim 1 is characterized in that: described overcoat nail (1) has the outer section of being screwed into (13) that is used to turn overcoat nail (1) in the end of first abutting end (12).
3. combined type clavicular intramedullary pin according to claim 2 is characterized in that: the radial section of the described outer section of being screwed into (13) is a regular polygon.
4. combined type clavicular intramedullary pin according to claim 1 is characterized in that: in described nail (2) other end end have be used to turn interior nail (2) in the section of being screwed into (22).
5. combined type clavicular intramedullary pin according to claim 4 is characterized in that: the radial section of the section of being screwed in described (22) is connected to the regular polygon of interior nail (2) cylindrical in being.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201684551U CN201642284U (en) | 2010-04-23 | 2010-04-23 | Combined clavicle intramedullary nail |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201684551U CN201642284U (en) | 2010-04-23 | 2010-04-23 | Combined clavicle intramedullary nail |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201642284U true CN201642284U (en) | 2010-11-24 |
Family
ID=43107469
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201684551U Expired - Fee Related CN201642284U (en) | 2010-04-23 | 2010-04-23 | Combined clavicle intramedullary nail |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201642284U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101803943A (en) * | 2010-04-23 | 2010-08-18 | 刘志春 | Combined type clavicular intramedullary pin |
| CN108065996A (en) * | 2017-12-04 | 2018-05-25 | 中国人民解放军第二军医大学第二附属医院 | A kind of two parts intramedullary nail Fracture internal fixaiion system |
-
2010
- 2010-04-23 CN CN2010201684551U patent/CN201642284U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101803943A (en) * | 2010-04-23 | 2010-08-18 | 刘志春 | Combined type clavicular intramedullary pin |
| CN108065996A (en) * | 2017-12-04 | 2018-05-25 | 中国人民解放军第二军医大学第二附属医院 | A kind of two parts intramedullary nail Fracture internal fixaiion system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101124 Termination date: 20130423 |