CN204744375U - Elasticity intramedullary nail - Google Patents
Elasticity intramedullary nail Download PDFInfo
- Publication number
- CN204744375U CN204744375U CN201520526478.8U CN201520526478U CN204744375U CN 204744375 U CN204744375 U CN 204744375U CN 201520526478 U CN201520526478 U CN 201520526478U CN 204744375 U CN204744375 U CN 204744375U
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- China
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- sealing cap
- intramedullary nail
- rivet nut
- elasticity
- nail
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Abstract
The utility model relates to an elasticity intramedullary nail, including the nail body and sealing cap, the shape of the nail body is rectangular shape, and the head of the nail body is the platykurtic to the width of nail body front end reduces forward after by gradually, the sealing cap is the cylindricality structure, and the front end inside of sealing cap is provided with the counter bore, and the outside of sealing cap is provided with one section screw thread. Set up inside the pulp cavity of long bone through two elasticity intramedullary nail are crisscross when it uses, correct the skeleton of dislocation through elasticity intramedullary nail's elasticity, the postoperative union phase, maintain the length and the axis of bone all the time, avoid the cripetura phenomenon to through the design of sealing cap, guarantee through the sealing cap that elasticity intramedullary nail can't withdraw from in the pulp cavity, and the sealing cap passes through wicresoft's approach, need not to enlarge incision or extra drilling, after the union, be more convenient for taking out elasticity intramedullary nail through the sealing cap.
Description
Technical field
This utility model relates to technical field of medical instruments, particularly refers to flexible intramedullary nail.
Background technology
Intramedullary pin is a kind of medical apparatus and instruments of relatively more conventional treatment fracture, belongs to the orthopedic fixation device tool in medical apparatus and instruments.Intramedullary pin is generally used for the internal fixtion of the long bone fractures such as radius, humerus, femur, tibia, the axial line of force of fracture site can be controlled, promote union of fracture, make patient can out-of-bed activity as early as possible, than general titanium alloy or pure titanium steel plate treatment relative low price, intensity is high, not easily fractures as steel plate.
The intramedullary pin structure used at present has medullary nailing rod, is provided with through hole at medullary nailing rod near-end or far-end.Screw one end is connected and fixed by screw thread and long bone, and the screw other end can be used for positioning medullary nailing rod through through hole.Usually, the comparatively shank of screw footpath that the through-hole diameter on medullary nailing rod is offered is larger, so that because medullary nailing rod is placed in the long bone inside of fracture during operation, shank of screw more easily penetrates in medullary nailing rod.Due to the matched in clearance between through hole and shank of screw, make the connection between medullary nailing rod and screw cannot realize real locking, easily produce and rock, thus cause fracture to produce the situations such as rotation deformity, affect knitting.
Utility model content
Technical problem to be solved in the utility model is: provide a kind of flexible intramedullary nail, can overcome the deficiency of the intramedullary pin used at present, avoids fracture to produce the situations such as rotation deformity and occurs.
For solving the problem, the technical solution adopted in the utility model is: flexible intramedullary nail, comprise rivet nut and sealing cap, the shape of described rivet nut is strip, and the head of rivet nut is flat, and the width of rivet nut front end reduces back to front gradually, described sealing cap is column construction, the inside, front end of sealing cap is provided with counterbore, and the outer setting of sealing cap has one section of screw thread, and screw thread has anti-back function trough.
Preferably, described rivet nut is cylindrical structure except head, and shaft diameter is 1.5mm ~ 5.0mm.
Preferably, the head of described rivet nut is with certain radian.
Preferably, the rear end of described sealing cap is flat.
The beneficial effects of the utility model are: above-mentioned flexible intramedullary nail, be crisscross arranged by two flexible intramedullary nails when it uses inner at the pulp cavity of long bone, the skeleton of dislocation is corrected by the elasticity of flexible intramedullary nail, postoperative fracture healing stage, all the time length and the axis of bone is maintained, avoid cripetura phenomenon, and by the design of sealing cap, guarantee that flexible intramedullary nail cannot exit in pulp cavity by sealing cap, and sealing cap is by Wicresoft's approach, without the need to expanding otch or additionally holing, after union of fracture, be more convenient for taking out flexible intramedullary nail by sealing cap.
Accompanying drawing explanation
Fig. 1 is the structural representation of rivet nut in this utility model;
Fig. 2 is the structural representation of sealing cap in this utility model;
Fig. 3 is the sectional structure schematic diagram of Fig. 2;
Fig. 4 is using state figure of the present utility model;
In figure: 1, rivet nut, 2, sealing cap, 3, counterbore, 4, screw thread.
Detailed description of the invention
Below by specific embodiment, a kind of flexible intramedullary nail described in the utility model is described in further detail.
As shown in Figure 1, flexible intramedullary nail, comprise rivet nut 1 and sealing cap 2, the shape of described rivet nut 1 is strip, rivet nut 1 is cylindrical structure except head, rivet nut 1 diameter is 1.5mm ~ 5.0mm, the head of rivet nut 1 is flat, and with certain radian, thus convenient insertion pulp cavity is inner, and the width of rivet nut 1 front end reduces back to front gradually, as Fig. 2, shown in Fig. 3, described sealing cap 2 is column construction, the inside, front end of sealing cap 2 is provided with counterbore 3, the outer setting of sealing cap 2 has one section of screw thread 4, and screw thread 4 has anti-back function trough, the rear end of sealing cap 2 is flat, sealing cap 2 is facilitated to be connected with skeleton phase screw thread 4.Wherein rivet nut 1 and sealing cap 2 have multi-specification optional.
As shown in Figure 4, above-mentioned flexible intramedullary nail, be crisscross arranged by two flexible intramedullary nails in use inner at the pulp cavity of long bone, the skeleton of dislocation is corrected by the elasticity of flexible intramedullary nail, postoperative fracture healing stage, all the time length and the axis of bone is maintained, avoid cripetura phenomenon, and by the design of sealing cap 2, the afterbody of rivet nut 1 is arranged in the counterbore 3 of sealing cap 2, then sealing cap 2 is fixed by screw thread 4 and skeleton, guarantee that flexible intramedullary nail cannot exit in pulp cavity by sealing cap 2, and sealing cap 2 is by Wicresoft's approach, without the need to expanding otch or additionally holing, after union of fracture, be more convenient for taking out flexible intramedullary nail by sealing cap 2.
The above embodiments are the principle of illustrative the invention and effect thereof only, and the embodiment that part is used, but not for limiting this utility model; It should be pointed out that for the person of ordinary skill of the art, under the prerequisite not departing from this utility model creation design, can also make some distortion and improvement, these all belong to protection domain of the present utility model.
Claims (4)
1. flexible intramedullary nail, comprise rivet nut and sealing cap, it is characterized in that: the shape of described rivet nut is strip, the head of rivet nut is flat, and the width of rivet nut front end reduces back to front gradually, described sealing cap is column construction, and the inside, front end of sealing cap is provided with counterbore, the outer setting of sealing cap has one section of screw thread, and screw thread has anti-back function trough.
2. flexible intramedullary nail according to claim 1, is characterized in that: described rivet nut is cylindrical structure except head, and shaft diameter is 1.5mm ~ 5.0mm.
3. flexible intramedullary nail according to claim 1 and 2, is characterized in that: the head of described rivet nut is with certain radian.
4. flexible intramedullary nail according to claim 1 and 2, is characterized in that: the rear end of described sealing cap is flat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520526478.8U CN204744375U (en) | 2015-07-20 | 2015-07-20 | Elasticity intramedullary nail |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520526478.8U CN204744375U (en) | 2015-07-20 | 2015-07-20 | Elasticity intramedullary nail |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204744375U true CN204744375U (en) | 2015-11-11 |
Family
ID=54459140
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520526478.8U Active CN204744375U (en) | 2015-07-20 | 2015-07-20 | Elasticity intramedullary nail |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204744375U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106725792A (en) * | 2017-01-10 | 2017-05-31 | 河北医科大学第三医院 | A kind of flexible intramedullary nail with pressurization anti-rotation function |
-
2015
- 2015-07-20 CN CN201520526478.8U patent/CN204744375U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106725792A (en) * | 2017-01-10 | 2017-05-31 | 河北医科大学第三医院 | A kind of flexible intramedullary nail with pressurization anti-rotation function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |