CN208002882U - One kind being used for the fixed degradable pure magnesium metal bone fracture plate of Long bone fracture - Google Patents
One kind being used for the fixed degradable pure magnesium metal bone fracture plate of Long bone fracture Download PDFInfo
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- CN208002882U CN208002882U CN201721269593.7U CN201721269593U CN208002882U CN 208002882 U CN208002882 U CN 208002882U CN 201721269593 U CN201721269593 U CN 201721269593U CN 208002882 U CN208002882 U CN 208002882U
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Abstract
The utility model discloses one kind being used for the degradable pure magnesium metal bone fracture plate of acropathy long bone fractures, the through-hole being arranged on bone plate ontology and bone plate ontology including strip, the through-hole includes the pressurization hole of screwed round lock hole and strip, the pressurization hole is located at the center of ontology, the lock hole is symmetrically distributed in the both sides in the pressurization hole, the upper surface of the bone plate ontology is equipped with reinforcing rib protrusion, the lock hole and pressurization hole are located at the inside of reinforcing rib protrusion, the both sides of the bone plate ontology are respectively fixedly connected with the flank protruded outward, the flank is equipped with screw fixed hole.The utility model bone plate body upper surface is equipped with a circle reinforcing rib protrusion, strengthen the biomechanical property of degradable magnesium metal, prevent its fracture etc., and it is equipped with encircling type flank and fixing threaded hole in the both sides of bone plate ontology, make bone plate preferably docile in bone face, with pressurization, there is more good holding fixed function to fracture.
Description
Technical field
The utility model is related to a kind of medical internal fixation device, it is related to fixed degradable pure for Long bone fracture
Magnesium bone plate.
Background technology
For Long bone fracture, clinic mostly uses internal fixation, and internal fixation device used is added with locking
Based on laminated steel, cross locking marrow nail and memorial alloy encircling bone bonding plate, metal material includes mainly used by these implants
Medical stainless steel and titanium alloy series.Titanium alloy has the characteristics that proportion is small, intensity is high, elasticity modulus is low, easy processing forming, existing
Have evolved into the ideal functional structure material of surgical implant.But complicated human internal environment can cause metal material
Material corrodes and causes the release of toxic element, biocompatibility therefore to reduce；Secondly, the elasticity modulus of metal material and human body bone
Tissue has big difference, and is also easy to produce stress shielding effect, is unfavorable for the growth and remodeling of area of new bone, even results in secondary fracture；Again
Secondary, the medical metal material of Clinical practice is non-degradable material at present, must after military service of the implant in human body expires
It must will increase the pain and medical expense burden of patient by taking-up of performing the operation again.Therefore people are dedicated to finding bio-compatible
Property more preferably, with the more close and degradable metal material of human body biomechanics of bone performance.
Degradable magnesium metal bone fracture plate has the advantage that other biological material can not replace：1. magnesium elements belong to needed by human
One of trace element, almost metabolic processes all in participant's body and also have the function of induction of bone growth；2. magnesium
Alloy has the density and mechanical performance closest with people's bone, and with highest specific strength in all metals.Magnesium alloy
Density is about 1.7g/cm3, extremely close with people's bone density (1.75g/cm3 or so)；3. magnesium and magnesium alloy have good biology
Compatibility can degrade automatically in vivo, be taken out without operation again；4. magnesium resource is abundant, cheap, it is suitble to a large amount of exploitations
Production.
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.And a large amount of In vitro cell experiment and animal vivo test demonstrate magnesium metal in field of orthopaedics
The development prospect of great potential, these provide enough reasons with experiment in vivo result for the final clinical conversion of magnesium metal in vitro
By support, magnesium metal really steps into the ripe of clinical application.But pure magnesium material especially purity 99.99% with
When upper, hardness is relatively low, and the fracture fixation implantation material as more demanding stress intensity has prodigious limitation, and there is presently no pure
The bone connector of the pure magnesium material of 99.99% or more degree.
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 of degree and preferable fixed effect, the utility model solve pure magnesium material and cannot be prepared because hardness is low for clinic
Bone plate the problem of.It is 99.99% or more pure magnesium material there is presently no the especially purity of the pure magnesium material of structure of the invention
The bone plate for radius far-end fracture of material.
The technical solution of the utility model is as follows：
One kind being used for the fixed degradable pure magnesium metal bone fracture plate of Long bone fracture, includes the bone plate sheet of strip
The through-hole being arranged on body and bone plate ontology, which is characterized in that the through-hole includes screwed round lock hole and strip
The pressurization hole of shape, the pressurization hole are located at the center of ontology, and the lock hole is symmetrically distributed in the both sides in the pressurization hole, described
The upper surface of bone plate ontology is equipped with reinforcing rib protrusion, and the lock hole and pressurization hole are located at the interior of reinforcing rib protrusion
The both sides of side, the bone plate ontology are respectively fixedly connected with the flank protruded outward, and the flank is fixed equipped with screw
Hole.
In the above-mentioned technical solutions, the bone plate ontology of reinforcing rib protrusion inside is arc-shaped, circular-arc-shaped design
The original anatomical structure for meeting bone, is conducive to bone plate preferably carrying out matching with bone to be bonded.
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 present invention, the upper surface of bone plate ontology is provided with reinforcing rib protrusion, the setting of reinforcing rib protrusion
The mechanical performance of bone plate ontology can be increased, improve endurance, solve the problems such as bone plate is broken, deforms in use.This
In utility model, it is provided with the kick protruded outward on the madial wall or lateral wall of reinforcing rib protrusion, it is small that these are set
On the one hand protrusion 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, is conducive to creeping for osteocyte, induces bone cell differentiation, is conducive to bone plate and cortex bone
Fitting, and then the fixed effect of bone plate is improved, make it be not easy to loosen.The protrusion can also be arranged in the outer of bone plate ontology
On surface, the fitting of bone plate and surrounding tissue is improved, improves fixed effect.When the surface of protrusion is curved surface or zigzag, more
Be conducive to osteocyte creeping in synthetism plate surface and be further proliferated and break up, bone plate and surrounding tissue is made to melt
It closes, improves the fixed effect of bone plate.
In the above-mentioned technical solutions, the reinforcing rib protrusion is integrally distributed along bone plate body edges, in this way
Distribution can increase the mechanical strength and stress intensity of reinforcing rib.
In the above-mentioned technical solutions, the height of the reinforcing rib protrusion is the 1/2~1/5 of bone plate body thickness.In reality
The thickness of reinforcing rib protrusion and height are suitably adjusted according to the thickness and width of bone plate ontology in the application of border.
In the above-mentioned technical solutions, the distance between the lock hole is less than the distance between the lock hole and pressurization hole.
The pressurization hole is arranged in the center of bone plate ontology in the present invention, and lock hole is symmetrically distributed in the two of the pressurization hole
Side, and, the distance between lock hole is less than the distance between the lock hole and pressurization hole, such to be provided with conducive to evenly dispersed
Stress suffered by bone plate improves its fixed function.
In the above-mentioned technical solutions, the 1/3~1/4 of a diameter of bone plate body width of the lock hole.Pressurization hole
Strong point is more than the diameter of lock hole.
In the above-mentioned technical solutions, the flank is the semicircular arc plate being bent to the lower surface of bone plate ontology.Downwards
The close contact of the circular shape of bending being designed with conducive to bone plate flank and bone tissue improves fixed effect, bending angle
Artificial plastotype can be carried out according to bearing's bone feature.
In the above-mentioned technical solutions, the screw fixed hole swings to bone plate ontology lower surface, screw fixed hole slot
Chamfer angle be 8~12 °.
In the above-mentioned technical solutions, the flank is symmetrically or asymmetrically distributed in centered on bone plate body axis and is connect
The both sides of bone plate ontology.Wherein, described to be symmetrically distributed in the screw fixed hole on a pair of of flank of bone plate ontology both sides to connect
It is in mal-distribution centered on bone plate body axis.Such design can reduce stress shielding, effectively avoid because planting
Enter screw or sends out fracture and bone defect again caused by drilling.
In the above-mentioned technical solutions, it is in what width became narrow gradually that the both ends of the bone plate ontology extend to axis direction
Protruding portion, the protruding portion are equipped with mounting hole.Mounting hole is set in protruding portion, is fixed by screw, firm bone plate is consolidated
Determine effect, prevent from rotating and loosen, in addition, the protruding portion extended forms slow slope with ontology, is conducive to creeping for osteocyte
With differentiation, bone plate is bonded with surrounding tissue, improves the fixed effect of bone plate.
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。
It is described in the utility model for the fixed degradable pure magnesium gold of acropathy long bone fractures in preferred technical solution
Belong in bone plate, the length of bone plate ontology is 73mm~360mm, and thickness is 2.5mm~4.5mm, and width is 10mm~16mm；
The size of the flank is 10~12mm*10~12mm, and the thickness of reinforcing rib protrusion is 0.5~1mm, is highly
0.5~1mm；Locking bore dia is about 2.0mm~4.5mm, and pitch of holes is 10mm~15mm.
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；
2, the bone plate ontology both ends of the utility model are cambered design or extend to form width to axis direction and gradually become
The design of narrow protruding portion, and it is equipped with encircling type flank and fixing threaded hole in both sides, make bone plate better docile bone face, has
There is pressurization, there is more good holding fixed function to fracture；
3, bone plate body upper surface is equipped with a circle reinforcing rib protrusion, strengthens the biomechanics of degradable magnesium metal
Can, prevent its fracture etc.；
4, 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.
5, 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.
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.
Fig. 2 is structural schematic diagram when tilting the utility model bone plate by certain angle.
Structural schematic diagram when Fig. 3 is by the utility model bone plate from the side.
Fig. 4 is the structural schematic diagram of the utility model bone plate with both ends protruding portion.
Fig. 5 indicates the protrusion being arranged on reinforcing rib side wall or bone plate body outer surface.
Symbol description：1, bone plate ontology, 2, lock hole, 3, pressurization hole, 4, reinforcing rib protrusion, 5, flank, 6, screw it is solid
Determine hole, 7, protruding portion, 8, mounting hole, 9, 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 Figures 1 to 3, a kind of degradable pure magnesium metal bone fracture plate for acropathy long bone fractures, including strip
The through-hole being arranged on bone plate ontology and bone plate ontology, the through-hole include screwed round lock hole and strip
Pressurization hole, the pressurization hole are located at the center of ontology, and the lock hole is symmetrically distributed in the both sides in the pressurization hole, the synthetism
The upper surface of plate ontology is equipped with reinforcing rib protrusion, and the lock hole and pressurization hole are located at the inside of reinforcing rib protrusion, institute
The both sides for stating bone plate ontology are respectively fixedly connected with the flank protruded outward, and the flank is equipped with screw fixed hole.
Wherein, the bone plate ontology of reinforcing rib protrusion inside is arc-shaped；The flank is to bone plate ontology
Lower surface bending semicircular arc plate；The screw fixed hole swings to bone plate ontology lower surface, and chamfer angle is 8 °
~12 °；The reinforcing rib protrusion is integrally distributed along bone plate body edges；The height of the reinforcing rib protrusion is to connect
The 1/2~1/5 of bone plate body thickness；The flank is symmetrically distributed in the both sides of bone plate ontology, is respectively equipped on the flank
One screw fixed hole, the screw fixed hole mal-distribution is in the both sides of bone plate ontology.
The bone plate is made of purity of 99.99% pure magnesium metal, contains according to pure magnesium metal described in mass percent
There is following ingredient：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：Bone plate is properly carried out direct docile in quilt by exposure fracture portions, selection
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 metal bone fracture plate of the utility model described in embodiment 1, the bone plate ontology
Both ends are arc-shaped, arc radius 0.5mm；The size of the flank is 10mm*10mm, arc radius 0.2mm, flank
Middle screw fixed hole chamfer angle is 10 °；The length of bone plate ontology is 118mm, thickness 2.5mm, width 11mm；It is described
The thickness of reinforcing rib protrusion be 0.5mm, a diameter of 3.5mm of the lock hole, the length in strip pressurization hole is
7mm, the distance between described lock hole (the distance between i.e. adjacent lock hole center) are 13mm, the lock hole and pressurization hole
The distance between the distance between (i.e. adjacent lock hole and pressurization hole center) be 15mm.
Embodiment 3
In the degradable pure magnesium metal bone fracture plate of the utility model described in embodiment 1, the bone plate ontology
Both ends are arc-shaped, arc radius 0.5mm, and the length of bone plate ontology is 260mm, thickness 4mm, width 16mm；
The size of the flank is 12mm*12mm, arc radius 0.3mm, and screw fixed hole chamfer angle is 12 ° in flank；Institute
The thickness for the reinforcing rib protrusion stated is 1mm, is highly 1mm；A diameter of 5mm of the lock hole, strip pressurization hole
Length is 10mm, and the distance between described lock hole (the distance between i.e. adjacent lock hole center) is 15mm, the lock hole
The distance between pressurization hole (the distance between i.e. adjacent lock hole and pressurization hole center) is 17mm.
Embodiment 4
In the degradable pure magnesium metal bone fracture plate of the utility model described in embodiment 1, the both ends of bone plate ontology to
Axis direction extends the protruding portion become narrow gradually in width, and the protruding portion is equipped with mounting hole, and the flank asymmetrically divides
Cloth is in the both sides of bone plate ontology, as shown in Figure 4.
Embodiment 5
In the degradable pure magnesium metal bone fracture plate of the utility model described in above-described embodiment 1~4, 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 5.It is described
Kick can be that semicircle (Fig. 5 A), arc, trapezoidal (Fig. 5 B) or surface are jagged protrusion (Fig. 5 C).
Claims (10)
1. one kind being used for the fixed degradable pure magnesium metal bone fracture plate of Long bone fracture, include the bone plate ontology of strip
With the through-hole being arranged on bone plate ontology, which is characterized in that the through-hole includes screwed round lock hole and strip
Pressurization hole, the pressurization hole is located at the center of ontology, and the lock hole is symmetrically distributed in the both sides in the hole of pressurizeing, described to connect
The upper surface of bone plate ontology is equipped with reinforcing rib protrusion, and the lock hole and pressurization hole are located at the inside of reinforcing rib protrusion,
The both sides of the bone plate ontology are respectively fixedly connected with the flank protruded outward, and the flank is equipped with screw fixed hole.
2. bone plate according to claim 1, which is characterized in that the side wall of the reinforcing rib protrusion is equipped with several prominent
It rises.
3. bone plate according to claim 1, which is characterized in that the height of the reinforcing rib protrusion is that bone plate ontology is thick
The 1/2~1/3 of degree.
4. bone plate according to claim 1, which is characterized in that distance between the lock hole be less than the lock hole with
The distance between pressurization hole.
5. bone plate according to claim 1, which is characterized in that a diameter of bone plate body width of the lock hole
1/3~1/4.
6. bone plate according to claim 1, which is characterized in that prolong to axis direction at the both ends of the bone plate ontology
The protruding portion become narrow gradually in width is stretched, the protruding portion is equipped with mounting hole.
7. bone plate according to claim 1, which is characterized in that the flank is to be bent to the lower surface of bone plate ontology
Semicircular arc plate, the screw fixed hole swings to bone plate ontology lower surface, and screw fixed hole chamfer angle is 8-12 °.
8. bone plate according to claim 1, which is characterized in that the flank is symmetrical centered on bone plate body axis
Or it is asymmetrically distributed in the both sides of bone plate ontology.
9. bone plate according to claim 8, which is characterized in that described a pair for being symmetrically distributed in bone plate ontology both sides
Screw fixed hole on flank is in mal-distribution centered on bone plate body axis.
10. according to any one of them bone plate of claim 1~9, which is characterized in that the bone plate is by purity
99.99% pure magnesium metal is made, and contains following ingredient according to pure magnesium metal described in mass percent：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。
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721269593.7U CN208002882U (en) | 2017-09-29 | 2017-09-29 | One kind being used for the fixed degradable pure magnesium metal bone fracture plate of Long bone fracture |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721269593.7U CN208002882U (en) | 2017-09-29 | 2017-09-29 | One kind being used for the fixed degradable pure magnesium metal bone fracture plate of Long bone fracture |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107496020A (en) * | 2017-09-29 | 2017-12-22 | 赵德伟 | A kind of degradable pure magnesium metal bone fracture plate fixed for Long bone fracture |
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2017
- 2017-09-29 CN CN201721269593.7U patent/CN208002882U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107496020A (en) * | 2017-09-29 | 2017-12-22 | 赵德伟 | A kind of degradable pure magnesium metal bone fracture plate fixed for Long bone fracture |
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