CN209301287U - A kind of orthopaedics screw internal fixing system - Google Patents
A kind of orthopaedics screw internal fixing system Download PDFInfo
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- CN209301287U CN209301287U CN201821725072.2U CN201821725072U CN209301287U CN 209301287 U CN209301287 U CN 209301287U CN 201821725072 U CN201821725072 U CN 201821725072U CN 209301287 U CN209301287 U CN 209301287U
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- screw
- orthopaedics
- fixing system
- internal fixing
- rod
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Abstract
The utility model discloses a kind of orthopaedics screw internal fixing systems, belong to orthopaedics implant technical field, the orthopaedics includes carrying out the first fixed screw of pressurization to bone for passing perpendicularly through the fracture line of damaged bone and the second screw for locking first screw with screw internal fixing system, wherein: the body of rod end of first screw is self tapping cutting edge, body of rod lower part is provided with screw thread, middle and upper part is polished rod, is provided with slanting screw channel on the head of screw of first screw；Second screw is threaded through in the screw channel, and the head of screw of second screw has the external screw thread adaptable with the internal screw thread of the screw channel.The utility model structure is simple, easy processing, and clinical use is easy, and fixing-stable minimally invasive can be implanted into, smaller to soft tissue injury, not osteoclastic blood fortune, and postoperation recovery is fast.
Description
Technical field
The utility model relates to orthopaedics implant technical fields, particularly relate to a kind of orthopaedics screw internal fixing system.
Background technique
Unstable fracture caused by indirect violence (oblique type, spiral shape etc.), fracture end easily shifts, and generallys use bone plate and spiral shell
Nail carries out replacement and fixation, however the unstable structure of fracture end be easy to cause after resetting to shift to cause to perform the operation again and fail, and bone plate
Implantation need to cut skin soft tissue, patient is caused compared with macrolesion, screw to the pressurization of bone plate can osteoclastic blood transport, make
It is long to obtain the postoperation recovery period.
Utility model content
The technical problem to be solved by the present invention is to provide a kind of fixing-stables, the orthopaedics that damage is small, postoperation recovery is fast
Use screw internal fixing system.
In order to solve the above technical problems, the utility model offer technical solution is as follows:
A kind of orthopaedics screw internal fixing system pressurize to bone solid including the fracture line for passing perpendicularly through damaged bone
The first fixed screw and the second screw for locking first screw, in which:
The body of rod end of first screw is self tapping cutting edge, and body of rod lower part is provided with screw thread, and middle and upper part is polished rod, institute
It states and is provided with slanting screw channel on the head of screw of the first screw；
Second screw is threaded through in the screw channel, and the head of screw of second screw has logical with the screw thread
The adaptable external screw thread of the internal screw thread in road.
Further, the body of rod end of first screw is that self tapping bores cutting edge certainly.
Further, the screw channel is up big and down small taper.
Further, the angle between the axis of the screw channel and the axis of first screw is 40-50 degree.
Further, the head of screw of first screw is spherical surface hemispherical directed downwardly.
Further, first screw is hollow structure.
Further, the body of rod end of second screw is self tapping cutting edge.
Further, the body of rod lower part of second screw is provided with screw thread, and middle and upper part is polished rod, alternatively, described second
The body of rod entire body of screw is provided with screw thread.
Further, the helicla flute opposite with hand of spiral is provided on the screw thread of the body of rod of first screw.
Further, first screw and the second screw are made of medical titanium alloy material, first screw and
Handle hole in the head of screw of two screws is hexagonal recess.
The utility model has the following beneficial effects:
The orthopaedics screw internal fixing system of the utility model, structure is simple, easy processing, and clinical use is easy, Ke Yiwei
Wound implantation, not osteoclastic blood fortune smaller to soft tissue injury, postoperation recovery are fast；First screw, the second screw and bon e formation three
Angular rock-steady structure, the structure anti-rotation, fixing-stable, resistance to plucking go out superior performance, can prevent fracture end from sliding to greatest extent；And
And implantation material is convenient to remove after knitting.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the orthopaedics screw internal fixing system of the utility model；
Fig. 2 is the use state diagram of orthopaedics screw internal fixing system shown in Fig. 1；
Fig. 3 is the top the schematic diagram of the section structure of the first screw in Fig. 1；
Fig. 4 is the lower part of the first screw and partial enlargement structural representation in Fig. 1.
Specific embodiment
In order to make the technical problems, technical solutions and advantages to be solved by the utility model clearer, below in conjunction with attached drawing
And specific embodiment is described in detail.
The utility model provides a kind of orthopaedics screw internal fixing system, as shown in Figs 1-4, including for passing perpendicularly through damage
The fracture line of the injury of the bone carries out the first fixed screw 1 of pressurization to bone and the second screw 2 for locking the first screw 1, in which:
First screw 1 includes the body of rod 11 and the head of screw 12 above the body of rod 11, and 11 end of the body of rod is self tapping cutting edge
15, for convenience of drilling, 11 end of the body of rod can also bore certainly cutting edge for self tapping；11 lower part of the body of rod is provided with screw thread, and middle and upper part is
Polished rod, so that realization be facilitated to fix the pressurization of bone；Slanting screw channel 13 is provided on head of screw 12；
Second screw 2 includes the body of rod 21 and the head of screw 22 above the body of rod 21, and the second screw 2 is threaded through screw channel
In 13 (i.e. the body of rod 21 passes through screw channel 13, and head of screw 22 is fixed in screw channel 13), head of screw 22 has logical with screw thread
The adaptable external screw thread of the internal screw thread in road 13, it is preferred that head of screw 22 can be fully screwed into screw channel 13, head of screw 22 it is upper
End face is substantially flush with the handle hole inner wall in the head of screw 12 of the first screw 1.
The utility model is suitable for treating oblique type, spiral fracture or bone split, in use, as shown in Fig. 2, the first screw 1
The fracture line 4 for passing perpendicularly through damaged bone 3 carries out pressurization fixation to bone；Second screw 2 is passed through from the screw channel of the first screw 1,
The body of rod end of second screw 2 is screwed into bone tissue and preferably also passes through fracture line 4, the head of screw and the first spiral shell of the second screw 2
The screw channel of nail 1 is connected to form one, and the second screw 2 can neutralize the bending stress and rotation stress of the first screw 1.First spiral shell
The 1, second screw of nail 2 forms triangle rock-steady structure with bone 3, and the structure anti-rotation, fixing-stable, resistance to plucking go out superior performance, energy
Prevent fracture end from sliding to greatest extent.
The orthopaedics screw internal fixing system of the utility model minimally invasive can be implanted into, smaller to soft tissue injury, not destroyed
The blood of bone is transported, and postoperation recovery is fast.After knitting, the second screw 2 can be first taken out, further takes out the first screw 1, implantation material taking-up side
Just.
To sum up, the orthopaedics screw internal fixing system of the utility model, structure is simple, easy processing, and clinical use is easy, can
Smaller to soft tissue injury with minimally invasive implantation, not osteoclastic blood is transported, and postoperation recovery is fast；First screw, the second screw and bone shape
At triangle rock-steady structure, the structure anti-rotation, fixing-stable, resistance to plucking go out superior performance, can prevent fracture end sliding to greatest extent
It moves；And implantation material is convenient to remove after knitting.
In the utility model, the screw channel 13 of the first screw 1 can be up big and down small taper, to improve the second screw
2 locking effect.Between the axis (while being also the axis of the second screw 2) and the axis of the first screw 1 of screw channel 13
Angle α is preferably 40-50 degree, verified, when angular range entire product optimal stability.It is understood that first
In the enough situations of 12 intensity of head of screw of screw 1, multiple screw channels 13 also can be set, to connect multiple second screws 2,
Further increase the stability of product.
The head of screw 12 of first screw 1 is preferably spherical surface hemispherical directed downwardly, in this way, can have sufficient space setting screw thread logical
Road 13, and product is the design of undercut mark, it is possible to reduce the stimulation to human body, it is smaller to the additional injury of patient.Of course, it is possible to manage
Solution, head of screw 12 can also use those skilled in the art it is conceivable that various other shapes, such as can be U-shaped spiral shell
Ailhead etc., to adapt to the needs that patient's difference uses position.Also, the handle hole in head of screw 12 can be linear type, cross
The groove of various shapes such as shape, however preferably hexagonal recess, hexagonal recess inner space is relatively large, in the space
Second screw 2 easy to operate.
As shown in figure 3, the first screw 1 is preferably hollow structure, it is easier resistance can be reduced during boring bone in this way
In drilling.As shown in figure 4, the helicla flute 14 opposite with hand of spiral can be set on the screw thread of the body of rod 11 of the first screw 1,
During screw screws in bone, helicla flute 14 can retain sclerotin as far as possible, especially in the treatment to sufferers of osteoporosis face
In the process, preferable grasping force can be obtained, bone loss reaches minimum；The space of helicla flute 14 is conducive to decompose pressure inside bone
Power avoids stress concentration from causing bone split.Also, due to being full of sclerotin between the screw thread of the body of rod 11 and in helicla flute 14, therefore more
The rock-steady structure of X pattern shown in partial enlarged view, the structure can make the first screw 1 in bone structure Fig. 4 easy to form after conjunction
Reach optimal fixing intensity, resistance to plucking goes out superior performance.Different, quantity/intensive journey of helicla flute 14 according to the bone mass of patient
Degree can be different, and the quantity of helicla flute 14 is more, and the bone structure of the X pattern of formation is more, and anticreep power output is stronger.
21 end of the body of rod of second screw 2 is preferably self tapping cutting edge, to facilitate implantation.The body of rod 21 of second screw 2 can
To use structure identical with the body of rod 11 of the first screw 1, it may be assumed that lower part is provided with screw thread, and middle and upper part is polished rod, such second spiral shell
Nail 2 can also pressurize to bon e formation and fix；Alternatively, the body of rod 21 can also be provided with screw thread with entire body, so that the second screw 2 mainly rises
It locks the first screw 1 and effect is auxiliarily fixed.Handle hole in the head of screw 22 of second screw 2 can be linear type, cross, six
The groove of various shapes such as rectangular, in order to instrumentation.
First screw 1 and the second screw 2 can be made of the suitable material of various medical high-strength degree, such as titanium alloy.
The above is preferred embodiments of the present invention, it is noted that for the ordinary skill of the art
For personnel, under the premise of not departing from principle described in the utility model, it can also make several improvements and retouch, these improvement
It also should be regarded as the protection scope of the utility model with retouching.
Claims (10)
1. a kind of orthopaedics screw internal fixing system, which is characterized in that including the fracture line for passing perpendicularly through damaged bone to bone
Carry out the first fixed screw of pressurization and the second screw for locking first screw, in which:
The body of rod end of first screw is self tapping cutting edge, and body of rod lower part is provided with screw thread, and middle and upper part is polished rod, described the
Slanting screw channel is provided on the head of screw of one screw；
Second screw is threaded through in the screw channel, and the head of screw of second screw has and the screw channel
The adaptable external screw thread of internal screw thread.
2. orthopaedics screw internal fixing system according to claim 1, which is characterized in that the body of rod end of first screw
End is that self tapping bores cutting edge certainly.
3. orthopaedics screw internal fixing system according to claim 1, which is characterized in that the screw channel be it is upper it is big under
Small taper.
4. orthopaedics screw internal fixing system according to claim 1, which is characterized in that the axis of the screw channel with
Angle between the axis of first screw is 40-50 degree.
5. orthopaedics screw internal fixing system according to claim 1, which is characterized in that the head of screw of first screw
For spherical surface hemispherical directed downwardly.
6. orthopaedics screw internal fixing system according to claim 1, which is characterized in that first screw is hollow knot
Structure.
7. orthopaedics screw internal fixing system according to claim 1, which is characterized in that the body of rod end of second screw
End is self tapping cutting edge.
8. orthopaedics screw internal fixing system according to claim 7, which is characterized in that under the body of rod of second screw
Portion is provided with screw thread, and middle and upper part is polished rod, alternatively, the body of rod entire body of second screw is provided with screw thread.
9. any orthopaedics screw internal fixing system in -8 according to claim 1, which is characterized in that first screw
The body of rod screw thread on be provided with the helicla flute opposite with hand of spiral.
10. orthopaedics screw internal fixing system according to claim 9, which is characterized in that first screw and second
Screw is made of medical titanium alloy material, and the handle hole in the head of screw of first screw and the second screw is that hexagon is recessed
Slot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821725072.2U CN209301287U (en) | 2018-10-24 | 2018-10-24 | A kind of orthopaedics screw internal fixing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821725072.2U CN209301287U (en) | 2018-10-24 | 2018-10-24 | A kind of orthopaedics screw internal fixing system |
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| Publication Number | Publication Date |
|---|---|
| CN209301287U true CN209301287U (en) | 2019-08-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821725072.2U Active CN209301287U (en) | 2018-10-24 | 2018-10-24 | A kind of orthopaedics screw internal fixing system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113662647A (en) * | 2020-05-15 | 2021-11-19 | 北京中安泰华科技有限公司 | Clavicle automatic pressurizing intramedullary nail with lock |
-
2018
- 2018-10-24 CN CN201821725072.2U patent/CN209301287U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113662647A (en) * | 2020-05-15 | 2021-11-19 | 北京中安泰华科技有限公司 | Clavicle automatic pressurizing intramedullary nail with lock |
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