CN2810515Y - Intramedullary nail - Google Patents
Intramedullary nail Download PDFInfo
- Publication number
- CN2810515Y CN2810515Y CN 200520061314 CN200520061314U CN2810515Y CN 2810515 Y CN2810515 Y CN 2810515Y CN 200520061314 CN200520061314 CN 200520061314 CN 200520061314 U CN200520061314 U CN 200520061314U CN 2810515 Y CN2810515 Y CN 2810515Y
- Authority
- CN
- China
- Prior art keywords
- staple
- locking nut
- fixed nail
- medullary cavity
- external threads
- 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.)
- Expired - Fee Related
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- Surgical Instruments (AREA)
Abstract
The utility model discloses an intramedullary fixed nail which comprises a fixed nail and a locking nut which is mutually matched with the fixed nail, wherein the tail end of the fixed nail is provided with external threads; the inner circumference of the locking nut is provided with internal threads which are matched with the external threads; the outer circumference of the locking nut is provided with the external threads; the locking nut forms a tapered shape; the external threads are arranged on the tapered face; the locking nut is fixedly arranged on the fixed nail by the product, so that the locking nut and the fixed nail form an integral structure; additionally, because the outer circumference of the locking nut is provided with the external threads, the locking among bones is realized when the locking nut is arranged, and accordingly, the situation that the fixed nail slides in a marrow cavity; because the product has the characteristics of reliable positioning and convenient installation, and accordingly, the utility model can be widely used for fracture therapy and is particularly suitable for the therapy of clavicular fracture.
Description
Technical field
This utility model relates to a kind of orthopaedics internal fixation material, the staple in particularly a kind of medullary cavity.
Background technology
At present, the internal fixation method of treatment fracture is divided into two kinds usually, and a kind of steel plate that is to use the band screw hole is arranged on the place that fractures of bone, re-uses screw and passes screw hole steel plate is fixed on the bone, this fixing means is owing to need have bigger otch, cause occurring long cicatrix after the rehabilitation, have a strong impact on attractive in appearance, in addition, it uses non-central property to fix, make and can not at utmost satisfy the biomechanics requirement, and complication is more, healing time is long; Another kind is the therapeutic modality of cross-under staple in medullary cavity, this method has does not destroy outer periosteum, meet biomechanics requirement, the fast characteristics of healing time, especially for the non-whole section comminuted fracture in stage casing good therapeutic effect is arranged, but the staple that now uses all is cylinder usually, and tail end does not have fixture, thereby make staple in medullary cavity, can occur the situation of rotation, slippage easily, also transdermal or bone etc. may occur when serious, make therapeutic effect seriously descend.
Summary of the invention
In order to overcome the deficiencies in the prior art, this utility model provides a kind of medullary cavity internal fixation nail reliable, easy for installation of locating.
The technical scheme that this utility model adopted is:
Staple in a kind of medullary cavity, it comprises staple and the locking nut that complements one another with staple, described staple tail end is provided with external screw thread, and the inner periphery of locking nut is provided with the female thread that matches with external screw thread, and the excircle of described locking nut is provided with external screw thread; Described locking nut is tapered, and described external screw thread is arranged on the conical surface;
As improvement of the technical scheme, the parting face of described staple is a polygon; The parting face of described staple is an equilateral triangle;
As further improvement in the technical proposal, described staple has the radian that meets bone shaped.
The beneficial effects of the utility model are: this product is fixedly mounted on locking nut on the staple, make it to become one structure, in addition, because the excircle of locking nut is provided with external screw thread, locking when making the locking nut installation between realization and the bone, thus prevented that the situation of slippage from appearring in staple in medullary cavity; Simultaneously, the parting face of staple is a polygon, it has effectively prevented the rotation phenomenon that staple occurs in medullary cavity, in addition, staple has the radian that meets bone shaped, thereby the installation that meets more when using is inserted, and increase it and enter the interior length of medullary cavity, increase the stability of staple to fracture fixation, because this product has location characteristics reliable, easy for installation, thereby extensively should have on fractures, be specially adapted in the treatment of clavicular fracture.
Description of drawings
Following accompanying drawing further specifies this utility model.
Fig. 1 is a structure broken away view of the present utility model;
Fig. 2 is a scheme of installation of the present utility model.
The specific embodiment
With reference to Fig. 1, Fig. 2, staple in a kind of medullary cavity, it comprises staple 1 and the locking nut 2 that complements one another with staple 1, described staple 1 tail end is provided with external screw thread 11, the inner periphery of locking nut 2 is provided with the female thread 21 that matches with external screw thread 11, and the excircle of described locking nut 2 is provided with external screw thread 22.
When this product is installed, at first staple 1 is inserted in the medullary cavity, use sleeve set then on the hexagonal (hexagon)nut on the locking nut 2, locking nut 2 is installed in the tail end of staple 1, thereby make locking nut 2 and staple 1 be connected in one, because the excircle of locking nut 2 is provided with external screw thread 22, the locking when making locking nut 2 installations between realization and the bone, thus prevented that the situation of slippage from appearring in staple 1 in medullary cavity; In addition, locking nut 2 is tapered, and described external screw thread 22 is arranged on the conical surface, and the design makes when locking nut 2 is installed more convenient.
The rotation phenomenon of this utility model in order to prevent that staple 1 from occurring in medullary cavity, the parting face of staple 1 is designed to polygon, for example: tetragon, pentagon etc., this product is designed to positive limit shape with staple 1, thereby make that staple 1 installation location is more reliable, simultaneously, staple 1 has the radian that meets bone shaped, thereby the installation that meets more when using is inserted, and increase it and enter the interior length of medullary cavity, increase the stability of staple to fracture fixation, because this product has the location reliably, characteristics easy for installation, thereby extensively should have on fractures, be specially adapted in the treatment of clavicular fracture.
Claims (5)
1. the staple in the medullary cavity, it comprises staple (1) and the locking nut (2) that complements one another with staple (1), it is characterized in that: described staple (1) tail end is provided with external screw thread (11), the inner periphery of locking nut (2) is provided with the female thread (21) that matches with external screw thread (11), and the excircle of described locking nut (2) is provided with external screw thread (22).
2. the staple in a kind of medullary cavity according to claim 1, it is characterized in that: described locking nut (2) is tapered, and described external screw thread (22) is arranged on the conical surface.
3. the staple in a kind of medullary cavity according to claim 1, it is characterized in that: the parting face of described staple (1) is a polygon.
4. the staple in a kind of medullary cavity according to claim 2, it is characterized in that: the parting face of described staple (1) is an equilateral triangle.
5. the staple in a kind of medullary cavity according to claim 1, it is characterized in that: described staple (1) has the radian that meets bone shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520061314 CN2810515Y (en) | 2005-07-06 | 2005-07-06 | Intramedullary nail |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520061314 CN2810515Y (en) | 2005-07-06 | 2005-07-06 | Intramedullary nail |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2810515Y true CN2810515Y (en) | 2006-08-30 |
Family
ID=36936898
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520061314 Expired - Fee Related CN2810515Y (en) | 2005-07-06 | 2005-07-06 | Intramedullary nail |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2810515Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103417282A (en) * | 2012-05-18 | 2013-12-04 | 付备刚 | Clavicle intramedullary nail and method for using same |
-
2005
- 2005-07-06 CN CN 200520061314 patent/CN2810515Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103417282A (en) * | 2012-05-18 | 2013-12-04 | 付备刚 | Clavicle intramedullary nail and method for using same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |