CN208741112U - A kind of fibula/radius intramedullary nail - Google Patents
A kind of fibula/radius intramedullary nail Download PDFInfo
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- CN208741112U CN208741112U CN201720928954.8U CN201720928954U CN208741112U CN 208741112 U CN208741112 U CN 208741112U CN 201720928954 U CN201720928954 U CN 201720928954U CN 208741112 U CN208741112 U CN 208741112U
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- connecting rod
- fibula
- radius
- intramedullary nail
- nail
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Abstract
A kind of fibula/radius intramedullary nail, it is described to include a fibula or radius and a fibula/radius intramedullary nail being plugged on the fibula or radius using fibula/radius intramedullary nail fibula group and radius group.Described fibula/the radius intramedullary nail includes a nail rod, an end cap that described nail rod one end is arranged in and an anti-rotation portion being arranged on the nail rod side wall.The nail rod includes a first connecting rod and a second connecting rod, and the angle between the first connecting rod and the central axis of second connecting rod is between 170 degree to 160 degree.The anti-rotation portion is arranged on the lateral wall of the second connecting rod and including multiple card tooth.Above-mentioned fibula/radius intramedullary nail can achieve self-locking effect for the fibula or radius after fixed fracture, and without being equipped with fixing screws, and required installation tool is also in daily use and simply, and quantity is also greatly reduced, property simple to operate.
Description
Technical field
The present invention relates to a kind of orthopedic fixation device tool, especially a kind of fibula/radius intramedullary nail.
Background technique
The similar product for fibula, fracture of shaft of radius is traditional intramedullary nail with lock currently on the market, such product is adopted
With proximal end (or distal end) approach, one end is fixed using pinning, and one end is polished rod, increases product cost in actual operation, and
And larger, the fixed failure rate of practical operation difficulty is higher, the set-up time is longer, due to needing multiple locking devices, so pacifying
Cause wound larger the skin and bone of patient in dress and removal process, and polished end radial direction anti-rotation and axial anti-cripetura
Effect is poor.
Summary of the invention
In view of this, the present invention provides a kind of fibula/radius intramedullary nails, to solve the above problems.
A kind of fibula/radius intramedullary nail comprising a nail rod, one is arranged in the end cap of described nail rod one end, and
One anti-rotation portion being arranged on the nail rod side wall.The nail rod includes a first connecting rod and one and the first connecting rod
The second connecting rod of connection.Angle between the first connecting rod and the central axis of second connecting rod is between 170 degree to 160 degree.
The free end of the second connecting rod is the closed end with round blunt chamfering.The freedom of the first connecting rod is arranged in the end cap
End.The anti-rotation portion is arranged on the lateral wall of the second connecting rod and including multiple card tooth.Each described card tooth is along institute
The axis for stating second connecting rod extends.The contour line in the anti-rotation portion is isosceles on the section along the axis of the second connecting rod
It is trapezoidal, and the upper bottom of the isosceles trapezoid is than going to the bottom closer to the free end of the second connecting rod.The maximum in the anti-rotation portion is straight
Diameter should be less than the maximum gauge of the end cap.
Further, institute's first, second connecting rod is solid hopkinson bar.
Further, the circumferential lengths of the second connecting rod are greater than the circumferential lengths of the first connecting rod, and described first connects
The central axis of bar and second connecting rod is in the same plane.
Further, multiple card teeth in the anti-rotation portion are uniformly distributed by center axis of the axis of the second connecting rod.
Further, on the section along the axis of the second connecting rod, the contour line of the end cap is isosceles trapezoid, and
The upper bottom of the isosceles trapezoid and the free end of first connecting rod connect, the upper bottom of the isosceles trapezoid and the diameter phase of first connecting rod
Deng.
Further, contour line of the anti-rotation portion on the section of the axis perpendicular to the second connecting rod with it is described
Contour line of the end cap on the section of the axis perpendicular to the first connecting rod can overlap or scaled down.
Compared with prior art, above-mentioned fibula/radius intramedullary nail is for the fibula or radius after fixed fracture, Ke Yida
To self-locking effect, and without being equipped with fixing screws, required installation tool is also in daily use and simply, and quantity is also greatly reduced,
It is simple to operate.Simultaneously because after fibula/radius intramedullary nail insertion fibula or radius, the external aiming without conventional intramedullary nails
Device also avoids the fixed failure in traditional lock fashion, improves while reducing installation difficulty, shortening the set-up time
Safety and validity.In addition, since the fibula/radius intramedullary nail need to only be reduced in the open at one end of bone to patient
Skin and bone damage.
Detailed description of the invention
The embodiment of the present invention is described below in conjunction with attached drawing, in which:
Fig. 1 is that a kind of cross-section structure using fibula/radius intramedullary nail fibula that first embodiment of the invention provides shows
It is intended to.
Fig. 2 uses fibula/radius intramedullary nail decomposition texture possessed by fibula/radius intramedullary nail fibula for Fig. 1's
Schematic diagram.
Fig. 3 is that a kind of cross-section structure using fibula/radius intramedullary nail radius that second embodiment of the invention provides shows
It is intended to.
Specific embodiment
Specific embodiments of the present invention are further elaborated below based on attached drawing.It should be understood that herein
The explanation of the embodiment of the present invention is not intended to limit the scope of protection of the present invention.
Fig. 1 and Fig. 2 is please referred to, is provided for first embodiment of the invention a kind of using fibula/radius intramedullary nail calf
The structural schematic diagram of bone group 100.The fibula group 100 includes that a fibula 10 and one are plugged in the shaft of fibula 10
Fibula/radius intramedullary nail 20.
The fibula 10 is one of two pieces of long bones on people and vertebrate (Tetrapoda) shank, is located at small leg outer side.Institute
Stating fibula 10 includes a capitulum fibulae 11, and a fibula external malleolus 12 and one connect outside the capitulum fibulae 11 and fibula
The shaft of fibula 13 of ankle 12.The capitulum fibulae 11 be fibula 10 upper end, can be touched from outer surface of the skin, and only with shin
Bone photo connection, is not involved in kneed composition.The fibula external malleolus 12 is the lower end of fibula, and (figure is not for the lower end, shin bone lower end
Show) and astragalus (not shown) constitute ankle-joint together.The shaft of fibula 13 is recessed with one towards the side of shin bone (not shown)
Lower part, referred to as interosseous crest of fibula 131.There is fibular medullary cavity 132 inside the shaft of fibula 13.The specific structure of the fibula 10
And working principle is should be known by those skilled in the art, details are not described herein.
Fibula/the radius intramedullary nail 20 is inserted into from the fibula external malleolus 12 of the fibula 10, and is plugged in the shaft of fibula
In 13 fibular medullary cavity 132.Fibula/the radius intramedullary nail 20 includes a nail rod 21, and one is arranged in described 21 one end of nail rod
End cap 22 and an anti-rotation portion 23 being arranged on 21 side wall of nail rod.
The nail rod 21 includes a first connecting rod 211 and a second connecting rod connecting with the first connecting rod 211
212.The first connecting rod 211 and second connecting rod 212 are integrally formed, can be formed in a manner of bending, while strong in order to guarantee
Degree, first, second connecting rod 211,212 is all solid hopkinson bar.The central axis of the first connecting rod 211 and second connecting rod 212
In the same plane, the angle theta and between the central axis is between 160 degree to 170 degree.The week of the first connecting rod 211
It is less than the circumferential lengths of the second connecting rod 212, to length to adapt to the physilogical characteristics of the fibula 10 itself.Described first,
Second connecting rod 211,212 specific circumferential lengths and diameter are greater than to be set according to the physiological structure parameter of specific fibula 10
It is fixed.The free end of the second connecting rod 212 is the closed end 2121 with round blunt chamfering, will be described in favor of passing through the closed end
Nail rod 21 is inserted into the fibular medullary cavity 131 of the fibula 10.
The free end of the first connecting rod 211 is arranged in the end cap 22, can with 211 one of the first connecting rod at
Type can also be connected through a screw thread.In the present embodiment, the end cap 22 is integrally formed with the first connecting rod 211.Along institute
On the section for stating the axis of second connecting rod 212, the contour line of the end cap 22 is isosceles trapezoid, and the upper bottom of the isosceles trapezoid with
The free end of first connecting rod 211 connects, and bottom is suitable with the diameter of first connecting rod 211 on this.On the free end of the end cap 22
A mounting groove 221 is offered, which opens up along the radial direction of the end cap 22, is used for and intramedullary nail installation tool phase
Even.In order to fix the intramedullary nail installation tool, internal screw thread 222 is additionally provided in the through-hole of the end cap 22.It needs further
Illustrate, the intramedullary nail installation tool should be the prior art, be usually used standard tool, herein no longer specifically
It is bright.The end cap 22 rotates in order to prevent, and the lateral wall of the end cap 22 is provided with multiple equally distributed end cap card teeth 223.
When in the fibula/radius intramedullary nail 20 insertion fibula 10, the end cap 22 is folded in the fibula external malleolus 12.
The anti-rotation portion 23 is arranged on the lateral wall of the second connecting rod 212, and including multiple card teeth 231.It is each
A card tooth 231 extends along the axis of the second connecting rod 212, and equal as center axis using the axis of the second connecting rod 212
Even distribution.The contour line in the anti-rotation portion 23 is isosceles trapezoid on the section along the axis of the second connecting rod 212, and should
The upper bottom of isosceles trapezoid is than going to the bottom closer to the free end of the second connecting rod 212.In the axis perpendicular to the second connecting rod 212
The contour line in the anti-rotation portion 23 is in gear-like on the section of line.In order to allow end cap 22 to be folded in the fibula external malleolus 12
In, the maximum gauge in the anti-rotation portion 23 should be less than the maximum gauge of the end cap 22, and the card in the anti-rotation portion 23
The structure having the same of end cap card tooth 223 of tooth 231 and end cap 22.Preferably, the anti-rotation portion 23 is perpendicular to described
Contour line and the end cap 22 on the section of the axis of second connecting rod 212 is in the axis perpendicular to the first connecting rod 211
Contour line on section can overlap or scaled down, in favor of being first inserted into outside the fibula when the anti-rotation portion 23
After ankle 12, the shape that the end cap 22 can be formed by jack with the anti-rotation portion 23 is completely coincident.
When installing the fibula/radius intramedullary nail 20, intramedullary nail installation tool is passed through to the mounting groove of end cap 22 first
221 and internal screw thread 222 connect with the fibula/radius intramedullary nail 20, then from the outer side center of the fibula external malleolus 12 of fibula 10
It is inserted into fibular medullary cavity 132, bone hammer can be used into nail mode and tap entrance.Make first, second connecting rod 211,212 simultaneously
Junction far from the interosseous crest of fibula 131.Finally, the end cap 23 is folded in the fibula external malleolus 12, so that completing should
The installation of fibula/radius intramedullary nail 20 finally removes the installation tool.Since the side wall of the interosseous crest of fibula 131 is relatively thin,
Therefore the junction of first, second connecting rod 211,212 should not be supported on the side wall of the interosseous crest of fibula 131, to prevent
It stops loss and hurts the side wall.And since the central axis of first, second connecting rod 211,212 has certain angle, make first, the
The junction of two connecting rods 211,212 and cortical bone generate extrusion friction, then under the action of the anti-rotation portion 23 is with end cap 22,
Reach the fixed effect of radial anti-rotation and axial anti-cripetura.
Compared with prior art, above-mentioned fibula/radius intramedullary nail 20 can achieve for the fibula 10 after fixed fracture
Self-locking effect, and without being equipped with fixing screws, required installation tool are also in daily use and simply, and quantity is also greatly reduced, behaviour
Make simple and convenient.Simultaneously because the external aiming without conventional intramedullary nails fills after fibula/radius intramedullary nail 20 is inserted into fibula 10
It sets, while reducing installation difficulty, shortening the set-up time, also avoids the fixed failure in traditional lock fashion, improve
Safety and validity.In addition, since the fibula/radius intramedullary nail 20 need to only be reduced in the open at one end of bone to patient
Skin and bone damage.
Referring to Fig. 3, it uses fibula/radius intramedullary nail radius group 200 for second embodiment of the invention is provided
Structural schematic diagram.Compared with first embodiment, only bone used in the fibula/radius intramedullary nail is different, and the fibula/
Radius intramedullary nail and fibula/radius intramedullary nail 20 of first embodiment are duplicate.Therefore in a second embodiment, described
Fibula/radius intramedullary nail still uses the label with fibula/radius intramedullary nail 20 of first embodiment.
It is described to be plugged in the calf including a radius 30 and one using fibula/radius intramedullary nail radius group 200
Fibula/radius intramedullary nail 20 in diaphysis 10.
The radius 30 is one of double bones of forearm, is located on the outside of forearm, and the side of thumb is divided into one and both ends, and
It is one of people and the forearm long bone of vertebrate (four-footed).The radius packet 30 includes a caput radii 31, a processus styloideus radii
32 and a body of radius 33 being connected between the caput radii 31 and processus styloideus radii 32.The caput radii 31 is located at radius
30 upper end, with capitulum of humerus associated section.The oar flesh belemnoid 32 is located at the lower end of radius 30, with nearside carpal bone associated section.Institute
The inside for stating body of radius 33 has a radius pulp cavity 331, and has an interosseous crest of radius 332 in outside.The radius bone
Between edge 332 towards the side of ulna, and it is recessed towards the direction far from the ulna, when forearm rotates, to increase rotation row
Journey avoids interference with.The detailed structure of the radius 30 and working principle are should be known by those skilled in the art, herein not
It repeats again.
When installing the fibula/radius intramedullary nail 20, via approach at the processus styloideus radii 32, it is inserted into radius pulp cavity
In 331, bone hammer can be used into nail mode and tap entrance.Keep the junction of first, second connecting rod 211,212 separate simultaneously
The interosseous crest of radius 332.Finally, the end cap 23 is folded in the processus styloideus radii 32, to complete the fibula/radius marrow
The installation of interior nail 20.
The foregoing is merely a prefered embodiment of the invention, is not used to limitation protection scope of the present invention, any in the present invention
Modification, equivalent replacement or improvement in spirit etc., all cover in scope of the presently claimed invention.
Claims (6)
1. a kind of fibula/radius intramedullary nail, it is characterised in that: the fibula/radius intramedullary nail includes a nail rod, and a setting exists
The end cap of described nail rod one end and an anti-rotation portion being arranged on the nail rod side wall,
The nail rod includes a first connecting rod and a second connecting rod connecting with the first connecting rod, the first connecting rod and
Angle between the central axis of two connecting rods is between 170 degree to 160 degree, and the free end of the second connecting rod is to fall with round blunt
The free end of the first connecting rod is arranged in the closed end at angle, the end cap, and the anti-rotation portion is arranged in the second connecting rod
Lateral wall on and including multiple card teeth, each described card tooth extends along the axis of the second connecting rod, along described second
The contour line in the anti-rotation portion is isosceles trapezoid on the section of the axis of connecting rod, and the upper bottom of the isosceles trapezoid is more leaned on than bottom
The free end of the nearly second connecting rod, the maximum gauge in the anti-rotation portion should be less than the maximum gauge of the end cap.
2. fibula/radius intramedullary nail as described in claim 1, it is characterised in that: first, second connecting rod is solid hopkinson bar.
3. fibula/radius intramedullary nail as described in claim 1, it is characterised in that: the circumferential lengths of the second connecting rod are greater than
The central axis of the circumferential lengths of the first connecting rod, the first connecting rod and second connecting rod is in the same plane.
4. fibula/radius intramedullary nail as described in claim 1, it is characterised in that: multiple card teeth in the anti-rotation portion are with institute
The axis for stating second connecting rod is that center axis is uniformly distributed.
5. fibula/radius intramedullary nail as described in claim 1, it is characterised in that: in cutting for the axis along the second connecting rod
On face, the contour line of the end cap is isosceles trapezoid, and the upper bottom of the isosceles trapezoid and the free end of first connecting rod connect, described
The upper bottom of isosceles trapezoid is equal with the diameter of first connecting rod.
6. fibula/radius intramedullary nail as described in claim 1, it is characterised in that: the anti-rotation portion is perpendicular to described
Contour line and wheel of the end cap on the section of the axis perpendicular to the first connecting rod on the section of the axis of two connecting rods
Profile can overlap or scaled down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720928954.8U CN208741112U (en) | 2017-07-27 | 2017-07-27 | A kind of fibula/radius intramedullary nail |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720928954.8U CN208741112U (en) | 2017-07-27 | 2017-07-27 | A kind of fibula/radius intramedullary nail |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208741112U true CN208741112U (en) | 2019-04-16 |
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ID=66049861
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720928954.8U Active CN208741112U (en) | 2017-07-27 | 2017-07-27 | A kind of fibula/radius intramedullary nail |
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| Country | Link |
|---|---|
| CN (1) | CN208741112U (en) |
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2017
- 2017-07-27 CN CN201720928954.8U patent/CN208741112U/en active Active
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