CN208048785U - A kind of T-type/degradable pure magnesium bone plate for radius far-end fracture of oblique T-type - Google Patents
A kind of T-type/degradable pure magnesium bone plate for radius far-end fracture of oblique T-type Download PDFInfo
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- CN208048785U CN208048785U CN201721269313.2U CN201721269313U CN208048785U CN 208048785 U CN208048785 U CN 208048785U CN 201721269313 U CN201721269313 U CN 201721269313U CN 208048785 U CN208048785 U CN 208048785U
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Abstract
The utility model discloses a kind of T-type/degradable pure magnesium bone plate for radius far-end fracture of oblique T-type, the bone plate includes lateral part and longitudinal component, the upper surface of the longitudinal component is equipped with reinforcing rib protrusion, the inside that fixing threaded hole in longitudinal component is located at reinforcing rib protrusion is set, the both sides of the longitudinal component are respectively fixedly connected with the flank protruded outward, the flank is equipped with screw fixed hole, the lateral part upwarps 10 °~15 ° relative to longitudinal component, and it is in reclinate arc-shaped structure, the length ratio of the lateral part and longitudinal component is 1:2~3.The material of the bone plate of the utility model is that the pure magnesium of 99.99% or more purity is prepared, and simple in structure, good fixing effect has good mechanical strength, bone inductive effect and degradability.
Description
Technical field
The utility model is related to a kind of medical internal fixation devices, are related to a kind of T-type/degradable pure magnesium distal radius of oblique T-type
Bone plate.
Background technology
Fracture of distal radius is a kind of multiple fracture, accounts for about the most common bone of 1/6 and upper limb of whole body incidence of fracture
Folding.The method for the treatment of fracture of distal radius is still in the majority with fixation outside traditional manipulative reduction gypsum at present.The method is remote to radius
Hold abarticular Fracture Simple that can obtain more satisfied curative effect, but to unstable comminuted fracture of distal radius, especially
It is intra-articular fracture, fixed outside simple gypsum is difficult the fixation accomplished the good contraposition of articular surface and stablized, and in turn results in oar
Wrist and articulatio radioulnaris bone joint.Requirement with the raising and people of Internal fixation technology to wrist joint function rehabilitation, in recent years
Internal fixation operation treatment is come into effect to comminuted fracture of distal radius.
It is mostly stainless steel, Titanium Alloy Screw, other memorial alloys etc., material tool that material is fixed in implantation common at this stage
There is preferable Biostrength, to the fixed effect of fracture of distal radius.But there is certain following drawback in such implantation material：1.
Toxic metal ions are released in human body, lead to inflammation in receptor body, to reduce biocompatibility.2. elasticity modulus mostly can not
It is close with people's bone well, lead to stress-shielding effect, to reduce the stimulation for growing and remolding to freshman bone tissue, most
Cause the unstable of implant afterwards.3. the medical metal material of current Clinical practice is non-degradable material, when implant exists
After military service in human body expires, it is necessary to by taking-up of performing the operation again, the pain and medical expense burden of patient will be increased.
It is currently used for the fixed traditional standard bone plate of fracture of distal radius, is single tabular in design feature
Structure, existing cannot need operator to carry out manual bending to reach with the matching for needing fixed skeletal structure intact when most
To the fixed shape of compound anatomical structure；Therefore usually there is not firm stress shielding, loosening, interior fixation, fracture redisplacement, steel
Plate is broken, these deficiencies will cause the operation bidirectional of patient to bear, or even influence surgical effect, and then need in the application very
Cautiously, it avoids that similar problems occur.
Relatively low about the magnesium alloy purity obtained under degradable magnesium material normal condition, the production of magnesium metal at present is mainly adopted
With ferrosilicon process and electrolysis, the content of the impurity elements such as Si, Fe and Cl is higher in alloy, limits the utilization of magnesium alloy, but with
The improvement of the improvement and process equipment of magnesium alloy manufacture processing conditions, the high-purity magnesium of current 99.99% or more purity is
Into the industrialized production stage.But pure magnesium material especially 99.99% or more purity when, hardness is relatively low, as more demanding
The fracture fixation implantation material of stress intensity has prodigious limitation, and there is presently no the pure magnesium materials of 99.99% or more purity
Bone connector.
Utility model content
In view of the above-mentioned prior art the problem of, the purpose of this utility model is to provide a kind of preferable mechanics is strong
The pure magnesium bone plate for radius far-end fracture of degree and preferable fixed effect.The utility model solves pure magnesium material and cannot be prepared because hardness is low
The problem of can be used in clinical bone plate, the especially purity there is presently no the pure magnesium material of structure of the invention is
The bone plate for radius far-end fracture of 99.99% or more pure magnesium material.
The technological means that the utility model uses is as follows：
A kind of degradable pure magnesium bone plate for radius far-end fracture, the bone plate includes lateral part and longitudinal component, the cross
It is integrally connected to form T-type plate or oblique T-type plate to part and longitudinal component, be set respectively on the lateral part and longitudinal component
3~7 fixing threaded holes are equipped with, the upper surface of the longitudinal component is equipped with reinforcing rib protrusion, the fixation in longitudinal component is arranged
Screw hole is located at the inside of reinforcing rib protrusion, and the both sides of the longitudinal component are respectively fixedly connected with the side protruded outward
The wing, the flank are equipped with screw fixed hole, and the lateral part upwarps 10 °~15 ° relative to longitudinal component, and is in be turned under
The length ratio of bent arc-shaped structure, the lateral part and longitudinal component is 1:2~3.
In the above-mentioned technical solutions, the side wall of the reinforcing rib protrusion is equipped with several protrusions.The protrusion can be arranged
On the lateral wall or madial wall of reinforcing rib protrusion, distribution can be arranged along the length direction of reinforcing rib protrusion evenly and at intervals
It arranges in a row, or arrange to arbitrary interval.The shape of the protrusion can be semicircle, arc, trapezoidal or unsetting.
Preferably, the surface of the protrusion can be curved surface, or zigzag.
In the above-mentioned technical solutions, it is the 1/7 of longitudinal component length that the distance between the fixing threaded hole of longitudinal component, which is arranged,
~1/9, the 1/3~1/4 of a diameter of longitudinal component width of fixing threaded hole.
In the above-mentioned technical solutions, it is the 1/7 of lateral part length that the distance between the fixing threaded hole of lateral part, which is arranged,
~1/9, the 1/3~1/4 of a diameter of lateral part width of the fixing threaded hole.
In the above-mentioned technical solutions, the longitudinal component of reinforcing rib protrusion inside is arc-shaped.It is such to be designed with
It is bonded conducive to bone plate is preferably carried out matching with bone, because skeletal structure majority is long tubular structure, there is arc knot
Structure part, therefore plate design is arcuate structure, the original anatomical structure of compound bone.
In the above-mentioned technical solutions, the flank is the semicircular arc plate being bent to longitudinal component lower surface.It is bent downwardly
Circular shape the close contact being designed with conducive to bone plate flank and bone surface, improve fixed effect, bending angle can root
Artificial plastotype is carried out according to bearing's bone feature.
In the above-mentioned technical solutions, the screw fixed hole swings to longitudinal component lower surface, and chamfer angle is 8 °~
12°。
In the above-mentioned technical solutions, the flank is symmetrically distributed in the both sides same position of longitudinal component, the side
Screw fixed hole on the wing is in the both sides of longitudinal component in mal-distribution.Preferably, two flanks are set, are symmetrically distributed in
On the identical position in both sides of longitudinal component, the center line of flank is longitudinal component length from the distance between longitudinal component distal end
1/3~1/4.The stress distribution of bone plate is uniform when in the position, it is not easy to deform, be broken.The screw of two symmetrical flanks
The mal-distribution of mounting hole can reduce stress shielding, efficiently avoid because pedicle screw or caused by drilling again
Hair fracture and bone defect.In addition, the flank can not also be symmetrically dispersed in the both sides of longitudinal component.Such structure can be with
Adjustment and the mechanical strength and fixed effect for improving structural slab.
In the above-mentioned technical solutions, raised adjacent to reinforcing rib is not provided on the longitudinal component upper surface of lateral part.
In the above-mentioned technical solutions, the height of the reinforcing rib protrusion is 1/2~1/5, preferably the 1/3 of longitudinal component thickness
~1/5.The width of reinforcing rib protrusion and height are suitably adjusted according to the thickness and width of bone plate ontology in practical applications,
The width of reinforcing rib protrusion is about 0.5~1.0mm.The setting of reinforcing rib protrusion can increase the mechanical performance of bone plate ontology,
Endurance is improved, the problems such as bone plate is broken, deforms in use is solved.In addition, in the present invention, reinforcing rib protrusion
The kick protruded outward is provided on madial wall or lateral wall, these kicks are arranged, and on the one hand can to improve reinforcing rib convex
The supporting role risen, makes it be unlikely to deform, the mechanical strength of raising bone plate ontology, the setting of another aspect kick, favorably
In creeping for osteocyte, bone cell differentiation is induced, is conducive to the fitting of bone plate and cortex bone, and then improve the fixation of bone plate
Effect makes it be not easy to loosen.The protrusion can also be arranged on the outer surface of bone plate ontology, improve bone plate and surrounding group
The fitting knitted improves fixed effect.When the surface of protrusion is curved surface or zigzag, osteocyte is more advantageous in synthetism plate surface
Creep and be further proliferated and break up, so that bone plate and surrounding tissue is merged, improve the fixed effect of bone plate.
In the above-mentioned technical solutions, in the arc-shaped structure of bending between two ends of the lateral part.This
The structure of sample preferably to be bonded at articular surface close with the metaphysis of distal radius, and the side of the oblique T-shaped plates of the utility model T/
Edge is arc-shaped shape, and at the backbone of distal radius, the design of the oblique T-shaped plate angles of T/ (angle is 90-120 °) makes longitudinal component
Bone plate can be properer be placed on distal radial palmar.The angle refers to the central axis of the lateral part and described
Angle one of between the central axis of longitudinal component.
In the above-mentioned technical solutions, the bone plate is made of purity of 99.99% pure magnesium metal, according to quality percentage
Contain following ingredient than the pure magnesium metal：Mg:99.99,Al:0.002,Si<0.001,Ca<0.001,Ti<0.0001,Mn:
0.002、Fe:0.001、Ni<0.0001、Cu:0.0002、Zn:0.0028、Pb:0.0008。
In degradable pure magnesium bone plate for radius far-end fracture described in the utility model, the size of each component can be according to implanting portion
Position and the difference for being implanted individual suitably adjust, and the total length of wherein bone plate is preferably 73mm~360mm, lateral part and
The thickness of longitudinal component is about 2.5~3.0mm, and the length ratio of lateral part and longitudinal component is preferably 1:2~3, lateral part
It can be equipped with suitable number of fixing threaded hole with longitudinal component, fixing threaded hole diameter is about 2.0mm~4.5mm, pitch of holes 10mm
~15mm, the flank size are about 10~12*10~12mm, and the width of reinforcing rib protrusion is about 0.5~1.0mm, is highly
0.5~1.5mm, preferably 0.5~1mm.
In degradable pure magnesium bone plate for radius far-end fracture described in the utility model, the upper surface of the longitudinal component and under
It is that r is preferably 20mm~30mm that surface, which has certain radian, radius of the radian,.
In degradable pure magnesium bone plate for radius far-end fracture described in the utility model, the central axis of the lateral part and institute
It is 90 °~120 ° one of to state between the central axis of longitudinal component angle, and bone plate is T shapes, angle when angle is 90 °
Bone plate is in oblique T shapes when more than 90 °, and the angle of oblique T shapes bone plate is preferably 70 °~80 °, and angle can be special according to bearing's bone
Click through pedestrian's work plasticity.
The beneficial effects of the utility model：
1, the material of the bone plate of the utility model is that the pure magnesium of 99.99% or more purity is prepared, and can avoid making
With process Poisoning Metal ion release, lead to inflammation in receptor body, to reduce biocompatibility, causes infection and aseptic pine
Dynamic possibility；Pure magnesium material has degradability, is taken out without second operation, mitigates patient suffering.Magnesium elements belong to human body must
One of the trace element needed almost metabolic processes all in participant's body and also has the function of induction of bone growth.
2, the bone plate of the utility model is to be equipped with encircling type flank with cambered design, and in the both sides of longitudinal component
And fixing threaded hole, better docile bone face have pressurization, have more good holding fixed function to fracture；
3, the longitudinal component upper surface of the bone plate of the utility model is equipped with a circle reinforcing rib protrusion, strengthens degradable
The biomechanical property of magnesium metal prevents its fracture etc.；
4, in the utility model bone plate, the lateral part upwarps 10 ° -15 ° relative to longitudinal component, and is in be turned under
Bent arc-shaped structure, while in the arc-shaped structure of bending, such structure is not only between two ends of lateral part
Be conducive to bone plate preferably carrying out matching with bone to be bonded, and stress of the fracture segment to bone plate can be reduced, to
Increase the intensity of bone plate.
5, it is provided with outside pleurapophysis on the madial wall or lateral wall of reinforcing rib protrusion and on bone plate body outer surface
The kick gone out, on the one hand these kicks, which are arranged, can improve the supporting role of reinforcing rib protrusion, it is made to be unlikely to deform, and improve
The mechanical strength of bone plate ontology, the setting of another aspect kick are conducive to creeping for osteocyte, induce bone cell differentiation,
Be conducive to the fitting of bone plate and cortex bone, and then improve the fixed effect of bone plate, it is made to be not easy to loosen.
6, the utility model increases mechanical strength by the structure of the traditional bone plate of improvement, realizes using pure magnesium material
Bone plate is made, meanwhile, the bone plate of the utility model, preparation method is simple, at low cost, is conducive to implement and clinic is answered
With being suitable for the needs of many patients.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model bone plate.
Structural schematic diagram when Fig. 2 is by the utility model bone plate from the side.
Fig. 3 indicates the protrusion being arranged on reinforcing rib side wall or bone plate body outer surface.
Symbol description：1, lateral part, 2, longitudinal component, 3, fixing threaded hole, 4, reinforcing rib protrusion, 5, flank, 6, screw
Mounting hole, 7, protrusion.
Specific implementation mode
Following non-limiting embodiments can make those skilled in the art that the utility model be more fully understood, but
The utility model is not limited in any way.
Embodiment 1
As shown in Fig. 1~2, a kind of degradable pure magnesium bone plate for radius far-end fracture of T-type, including lateral part and longitudinal component,
The lateral part is equipped with 4 fixing threaded holes, and the longitudinal component is equipped with 6 fixing threaded holes, the central shaft of the lateral part
Angle is 90 ° one of between line and the central axis of the longitudinal component, and the upper surface of the longitudinal component is equipped with
Reinforcing rib protrusion, wherein adjacent to reinforcing rib protrusion, the longitudinal component is not provided on the longitudinal component upper surface of lateral part
Fixing threaded hole be located at the inside of reinforcing rib protrusion, the both sides of the longitudinal component be respectively fixedly connected with it is outwardly convex go out
A pair of of flank is respectively equipped with a screw fixed hole on the flank, and the lateral part upwarps 12 ° relative to longitudinal component,
And be in reclinate arc-shaped structure, the length ratio of the lateral part and longitudinal component is 1:2.
The bone plate body outer surface of the wherein described reinforcing rib protrusion inside and the inner surface of bone plate longitudinal component
It is arc-shaped；The flank is the semicircular arc plate being bent to longitudinal component lower surface, and the screw fixed hole swings to longitudinal direction
Portion lower surface, chamfer angle are 10 °, and the height of the reinforcing rib protrusion is the 1/3 of longitudinal component thickness, the transverse direction
For in the arc-shaped structure of bending, the both sides that the flank is symmetrically distributed in longitudinal component are identical between two partial ends
On position, the screw fixed hole mal-distribution on the pair of flank is in the both sides of longitudinal component.
In the above-mentioned technical solutions, the bone plate is made of purity of 99.99% pure magnesium metal, according to quality percentage
Contain following ingredient than the pure magnesium metal：Mg:99.99,Al:0.002,Si<0.001,Ca<0.001,Ti<0.0001,Mn:
0.002、Fe:0.001、Ni<0.0001、Cu:0.0002、Zn:0.0028、Pb:0.0008。
The occupation mode of the bone plate is：Exposure fracture portions select suitable bone plate to carry out direct docile in quilt
Fixed fracture, Kirschner wire fixation, drilling are sequentially screwed into screw, complete plate fixation device, sew up the incision.
Embodiment 2
In the degradable pure magnesium bone plate for radius far-end fracture of T-type described in above-described embodiment 1, the lateral part relative to
Longitudinal component upwarps 15 °, and is in reclinate arc-shaped structure, and the length ratio of the lateral part and longitudinal component is 1:
2.5.The screw fixed hole swings to longitudinal component lower surface, and chamfer angle is 12 °, and the height of the reinforcing rib protrusion is
The 1/2 of longitudinal component thickness.
Embodiment 3
A kind of degradable pure magnesium bone plate for radius far-end fracture of T-type, including lateral part and longitudinal component, the lateral part point
Not She You fixing threaded hole, one of between the central axis of the lateral part and the central axis of the longitudinal component press from both sides
Angle is 90 °, and the upper surface of the longitudinal component is equipped with reinforcing rib protrusion, wherein adjacent to the longitudinal component upper table of lateral part
Reinforcing rib protrusion is not provided on face, the fixing threaded hole of the longitudinal component is located at the inside of reinforcing rib protrusion, the longitudinal direction
Partial both sides be respectively fixedly connected with it is outwardly convex go out a pair of of flank, the flank is half be bent to longitudinal component lower surface
Arc-shaped plate, the flank are symmetrically distributed in the both sides of longitudinal component, and a screw fixed hole is respectively equipped on flank, and screw is solid
Hole mal-distribution is determined in the both sides of longitudinal component, screw fixed hole swings to longitudinal component lower surface, and chamfer angle is 10 °,
The height of the reinforcing rib protrusion is the 1/3 of longitudinal component thickness, and the lateral part upwarps 12 ° relative to longitudinal component, and
In reclinate arc-shaped structure.
The bone plate body outer surface of reinforcing rib protrusion inside and the inner surface of bone plate longitudinal component has
Certain radian, radius of the radian is that r is preferably 25mm, in the arc-shaped of bending between two ends of the lateral part
Structure, two rounded types in end, radius of corner 5.5mm.
In addition, the size of each component of the bone plate can according to implant site and be implanted individual difference suitably adjust
Whole, the thickness of wherein lateral part and longitudinal component is about 2.5~3.0mm, and the length ratio of lateral part and longitudinal component is preferred
It is 1:2~3, lateral part and longitudinal component can be equipped with suitable number of fixing threaded hole, fixing threaded hole diameter be about 2.0mm~
4.5mm, pitch of holes are 10mm~15mm, and the flank size is about 10~12*10~12mm, and the width of reinforcing rib protrusion is about
0.5~1.0mm is highly 0.5~1.5mm, preferably 0.5~1mm.
In the above-mentioned technical solutions, the bone plate is made of purity of 99.99% pure magnesium metal, according to quality percentage
Contain following ingredient than the pure magnesium metal：Mg:99.99,Al:0.002,Si<0.001,Ca<0.001,Ti<0.0001,Mn:
0.002、Fe:0.001、Ni<0.0001、Cu:0.0002、Zn:0.0028、Pb:0.0008。
The occupation mode of the bone plate is：Exposure fracture portions select suitable bone plate to carry out direct docile in quilt
Fixed fracture, Kirschner wire fixation, drilling are sequentially screwed into screw, complete plate fixation device, sew up the incision.
Embodiment 4
In the degradable pure magnesium metal bone fracture plate of the utility model described in above-described embodiment 1~3, in reinforcing rib protrusion
It is provided on madial wall, lateral wall or on the outer surface of bone plate ontology the kick protruded outward, as shown in Figure 3.It is described
Kick can be that semicircle (Fig. 3 A), arc, trapezoidal (Fig. 3 B) or surface are jagged protrusion (Fig. 3 C).
Claims (9)
1. a kind of T-type/the oblique degradable pure magnesium bone plate for radius far-end fracture of T-type, the bone plate includes lateral part and longitudinal component,
The lateral part and longitudinal component are integrally connected to form T-type plate or oblique T-type plate, on the lateral part and longitudinal component
It is respectively arranged with 3-7 fixing threaded hole, which is characterized in that the upper surface of the longitudinal component is equipped with reinforcing rib protrusion, setting
It is located at the inside of reinforcing rib protrusion in the fixing threaded hole of longitudinal component, the both sides of the longitudinal component have been respectively fixedly connected with
The flank protruded outward, the flank be equipped with screw fixed hole, the lateral part relative to longitudinal component upwarp 10 °~
15 °, and be in reclinate arc-shaped structure, the length ratio of the lateral part and longitudinal component is 1:2~3.
2. the T-type according to claim 1/degradable pure magnesium bone plate for radius far-end fracture of oblique T-type, which is characterized in that described
The side wall of reinforcing rib protrusion is equipped with several protrusions.
3. the T-type according to claim 1/degradable pure magnesium bone plate for radius far-end fracture of oblique T-type, which is characterized in that setting exists
Distance between the fixing threaded hole of longitudinal component is the 1/7~1/9 of longitudinal component length, a diameter of longitudinal direction portion of fixing threaded hole
Divide the 1/3~1/4 of width.
4. the T-type according to claim 1/degradable pure magnesium bone plate for radius far-end fracture of oblique T-type, which is characterized in that setting exists
Distance between the fixing threaded hole of lateral part is the 1/7~1/9 of lateral part length, a diameter of cross of the fixing threaded hole
To the 1/3~1/4 of partial width.
5. the T-type according to claim 1/degradable pure magnesium bone plate for radius far-end fracture of oblique T-type, which is characterized in that the side
The wing is the semicircular arc plate being bent to longitudinal component lower surface.
6. the T-type according to claim 1/degradable pure magnesium bone plate for radius far-end fracture of oblique T-type, which is characterized in that described
Screw fixed hole swings to longitudinal component lower surface, and chamfer angle is 8 °~12 °.
7. the T-type according to claim 1/degradable pure magnesium bone plate for radius far-end fracture of oblique T-type, which is characterized in that described
Flank is symmetrically distributed in the both sides same position of longitudinal component, and the screw fixed hole on the flank is in the both sides of longitudinal component
In mal-distribution.
8. the T-type according to claim 1/degradable pure magnesium bone plate for radius far-end fracture of oblique T-type, which is characterized in that adjacent to
Reinforcing rib protrusion is not provided on the longitudinal component upper surface of lateral part.
9. the T-type according to claim 1/degradable pure magnesium bone plate for radius far-end fracture of oblique T-type, which is characterized in that described to add
The height of strengthening tendons protrusion is the 1/2~1/5 of longitudinal component thickness.
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| CN201721269313.2U CN208048785U (en) | 2017-09-29 | 2017-09-29 | A kind of T-type/degradable pure magnesium bone plate for radius far-end fracture of oblique T-type |
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|---|---|---|---|
| CN201721269313.2U CN208048785U (en) | 2017-09-29 | 2017-09-29 | A kind of T-type/degradable pure magnesium bone plate for radius far-end fracture of oblique T-type |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110152069A (en) * | 2019-05-27 | 2019-08-23 | 南通罗伯特医疗科技有限公司 | The degradable multiporous iron-based bone plate of one kind and its increasing material manufacturing method |
-
2017
- 2017-09-29 CN CN201721269313.2U patent/CN208048785U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110152069A (en) * | 2019-05-27 | 2019-08-23 | 南通罗伯特医疗科技有限公司 | The degradable multiporous iron-based bone plate of one kind and its increasing material manufacturing method |
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