CN101803943A - Combined type clavicular intramedullary pin - Google Patents
Combined type clavicular intramedullary pin Download PDFInfo
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- CN101803943A CN101803943A CN 201010153946 CN201010153946A CN101803943A CN 101803943 A CN101803943 A CN 101803943A CN 201010153946 CN201010153946 CN 201010153946 CN 201010153946 A CN201010153946 A CN 201010153946A CN 101803943 A CN101803943 A CN 101803943A
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- nail
- overcoat
- pin
- combined type
- abutting end
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Abstract
The invention discloses a combined type clavicular intramedullary pin for orthopedic surgery, which comprises an outer sleeve pin with an inner bore and an inner pin, wherein one end of the outer sleeve pin is provided with a first joint end having external threads, one end of the inner pin is provided with a second joint end with the external threads, the thread pitch of the external threads of the first joint end is larger than that of the second joint end, the inner pin penetrates through the inner bore of the outer sleeve pin to be connected with the inner wall threads of the first joint end of the outer sleeve pin, and the second joint end of the inner pin is extended out of the outer sleeve pin. The invention solves the problem that the fixation technique adopted by the existing clavicle fracture surgery can not produce compressive stress, realizes the firmly fixation of fractured bones, has simple operation, is safe and convenient, and can be taken out more conveniently.
Description
Technical field
The present invention 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.
Summary of the invention
The technical problem to be solved in the present invention 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 solution adopted for the present invention to solve the technical problems 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 invention has the beneficial effects as follows: the socket combination of nail and overcoat nail in the present invention 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
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is a structural representation of the present invention.
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
The present invention is further illustrated with preferred embodiment in conjunction with the accompanying drawings now.These accompanying drawings are the sketch map of simplification, basic structure of the present invention only is described in a schematic way, so it only show the formation relevant with the present invention.
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 the present invention 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 of the present invention, 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.
The foregoing description only is explanation technical conceive of the present invention and characteristics; its purpose is to allow the personage that is familiar with this technology can understand content of the present invention and is implemented; can not limit protection scope of the present invention with this; all equivalences that spirit is done according to the present invention change or modify, and all should be encompassed in protection scope of the present invention.
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. a kind of 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. a kind of 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. a kind of 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. a kind of 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 |
|---|---|---|---|
| CN 201010153946 CN101803943A (en) | 2010-04-23 | 2010-04-23 | Combined type clavicular intramedullary pin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010153946 CN101803943A (en) | 2010-04-23 | 2010-04-23 | Combined type clavicular intramedullary pin |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101803943A true CN101803943A (en) | 2010-08-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010153946 Pending CN101803943A (en) | 2010-04-23 | 2010-04-23 | Combined type clavicular intramedullary pin |
Country Status (1)
| Country | Link |
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| CN (1) | CN101803943A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN112451073A (en) * | 2020-11-26 | 2021-03-09 | 合肥市第二人民医院 | Clavicle intramedullary nail fixing anchor and clavicle intramedullary nail fixing device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2243865Y (en) * | 1995-03-27 | 1997-01-01 | 陈奇 | Internal fixing screw for fracture of neck of femur |
| CN2272731Y (en) * | 1995-10-31 | 1998-01-21 | 王明才 | Interlocking pressure internal fixation intramedullary nail |
| CN2305960Y (en) * | 1997-06-20 | 1999-02-03 | 张明 | Automatic pressurizing intramedullary screw |
| CN2917569Y (en) * | 2006-07-13 | 2007-07-04 | 中国人民解放军第一一八医院 | Medical double-thread dynamically pressing hollow nail |
| CN201642284U (en) * | 2010-04-23 | 2010-11-24 | 刘志春 | Combined clavicle intramedullary nail |
-
2010
- 2010-04-23 CN CN 201010153946 patent/CN101803943A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2243865Y (en) * | 1995-03-27 | 1997-01-01 | 陈奇 | Internal fixing screw for fracture of neck of femur |
| CN2272731Y (en) * | 1995-10-31 | 1998-01-21 | 王明才 | Interlocking pressure internal fixation intramedullary nail |
| CN2305960Y (en) * | 1997-06-20 | 1999-02-03 | 张明 | Automatic pressurizing intramedullary screw |
| CN2917569Y (en) * | 2006-07-13 | 2007-07-04 | 中国人民解放军第一一八医院 | Medical double-thread dynamically pressing hollow nail |
| CN201642284U (en) * | 2010-04-23 | 2010-11-24 | 刘志春 | Combined clavicle intramedullary nail |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN112451073A (en) * | 2020-11-26 | 2021-03-09 | 合肥市第二人民医院 | Clavicle intramedullary nail fixing anchor and clavicle intramedullary nail fixing device |
| CN112451073B (en) * | 2020-11-26 | 2022-03-08 | 合肥市第二人民医院 | Clavicle intramedullary nail fixing anchor and clavicle intramedullary nail fixing device |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20100818 |