CN205514862U - Ilium nail and vertebra fixing device with material coating is inductiond to bone - Google Patents
Ilium nail and vertebra fixing device with material coating is inductiond to bone Download PDFInfo
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- CN205514862U CN205514862U CN201620054923.XU CN201620054923U CN205514862U CN 205514862 U CN205514862 U CN 205514862U CN 201620054923 U CN201620054923 U CN 201620054923U CN 205514862 U CN205514862 U CN 205514862U
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- sleeve
- nail
- induction material
- bone
- material coating
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Abstract
The utility model relates to an ilium nail and vertebra fixing device with material coating is inductiond to bone, including the nail body and connector, the nail is personally experienced sth. Part of the body including the head of the one end of pole portion and pole portion, the surface of pole portion has at least partly surface and has the external screw thread, the surface coating of external screw thread has the bone to induction the material layer, the connector be used for with the head is connected fixedly with the backbone stick. The utility model provides an ilium nail and vertebra fixing device on the one hand, can utilize the biological activity of the induced material of bone, excite the ability of ostosis, promote the sclerotin healing of growing, in addition can be so that form between the nail body and the sclerotin and combine closely, guarantee the reliability of its connection, and on the other hand, the nail -free body and sclerotin direct contact can be kept away to the induced material of coating bone, avoid appearing the infection scheduling problem.
Description
Technical field
This utility model relates to medical surgery instrument field, particularly to a kind of ilium nail with bone induction material coating
And spinal fixing device.
Background technology
Waist sacrum pelvis technique for fixing is always spinal surgery neck waist sacrum pelvis technique for fixing and is always field of spinal surgery
Study hotspot and difficult point, especially with regard to how improving interior fixing stability and fusion rate aspect.At treatment lumbosacral spine position
Because tuberculosis, the destruction of tumor and senile osteoporosis companion's vertebra degenerative disorders etc. needs to carry out the removing of focus, reset and interior
Fixing aspect majority spinal surgeon uses ilium nail associating nail pedicle fix method.Biomechanics Research shows: ilium is followed closely
And lumbosacral spine pedicle screw interconnection technique has the biomechanical advantage of stability between maintenance waist sacrum pelvis, and this technology is at waist rumpbone
The stability that basin is fixed is best, and the mobility under various kinestates all significantly reduces.
Ilium follows closely associating nail pedicle fix method particularly as follows: provide spinal rod and Duo Gen pedicle nail and an ilium nail,
Many pedicle nails are arranged along the bearing of trend of spinal rod, and one end of every pedicle nail is connected to spinal rod by adapter,
The other end is screwed into lumbar vertebra, and ilium is followed closely one end and is connected to spinal rod by adapter, and the other end is screwed into ilium, and then realizes solid
Fixed.
Existing ilium nail generally comprises rivet nut and adapter, and the bar portion of rivet nut has external screw thread, and the head of rivet nut sets
Adapter, adapter is had to be used for connecting spinal rod.The ilium nail of this structure, rivet nut is screwed into ilium, between rivet nut and ilium
Biocompatibility is poor, it is difficult to accomplishes to combine closely, easily loosens, and then causes pain to human body, furthermore, it is possible to cause sense
Dye.
Additionally, the adapter that existing ilium nails on, owing to its structural strength is poor, in loading process, the company of being likely to result in
Connect device deformation, or and spinal rod between connection become loosening, and then affect therapeutic effect, in some instances it may even be possible to cause vertebra to be fixed
Lost efficacy.
Utility model content
Main purpose of the present utility model is, for above-mentioned deficiency of the prior art, it is provided that one has self-bone grafting
The ilium nail of material coating and spinal fixing device.
For achieving the above object, on the one hand, this utility model provides a kind of ilium nail with bone induction material coating,
Including:
Rivet nut, described rivet nut includes that the head of the one end in bar portion and bar portion, the surface in described bar portion have at least partially
Surface has external screw thread, and described externally threaded surface-coated has bone induction material layer；
Adapter, fixing in order to described head is connected with spinal rod.
Preferably, described adapter includes:
Sleeve, described sleeve one end is connected with described head universal rotational, and the sidewall of the described sleeve other end is provided with two
The relative U-shaped storage breach extended along axis；
Nut, described nut is threadeded with the described other end of described sleeve.
Preferably, described one end of described sleeve is provided with ball cup, through hole on described ball cup, and the hole wall of described through hole is
Sphere, described bar portion is passed by described through hole, and described head is the spherical structure suitable with described sphere.
Preferably, described one end of described sleeve is formed with the gear edge that side is protruded radially inward, and described ball cup is arranged
In sleeve, and described ball cup is formed with axially projecting stage portion, and described stage portion backstop is in described gear edge.
Preferably, the outer surface of the described other end of described sleeve is provided with external screw thread, and described nut has and described outer spiral shell
The female thread of stricture of vagina coupling.
Preferably, described nut includes:
Lid, described lid includes that circumferential wall and roof, described circumferential wall are provided with described female thread；
Conflict platform, described conflict platform protrudes formation from described roof along the direction towards described sleeve, described conflict platform
Axis and the dead in line of described lid, and diameter is less than the internal diameter of described sleeve.
Preferably, the free end end face of described conflict platform is provided with and is formed with the arc location suitable with described spinal rod
Groove.
Preferably, the height of described conflict platform is more than the height of described circumferential wall.
Preferably, described bone induction material layer is hydroxyapatite and/or magnesium metal.
On the other hand, this utility model provides a kind of spinal fixing device, including:
Spinal rod；
Having the ilium nail of bone induction material coating as above, described adapter is fixedly connected on described spinal rod.
The ilium nail with bone induction material coating provided according to this utility model and spinal fixing device, by nail
One layer of bone induction material is coated, on the one hand, the biological activity of bone induction material can be utilized, excite osteogenesis on the external screw thread of body
Ability, promote bone tissue growth healing, and so that between rivet nut and sclerotin formed combine closely, it is ensured that its connect can
By property, on the other hand, coat bone induction material, rivet nut can be avoided directly to contact with sclerotin, it is to avoid the problems such as infection occur.
Accompanying drawing explanation
Fig. 1 is the structural representation that this utility model embodiment has the ilium nail of bone induction material coating；
Fig. 2 is the decomposing schematic representation that this utility model embodiment has the ilium nail of bone induction material coating；
Fig. 3 is the sectional view that this utility model embodiment has the ilium nail of bone induction material coating；
Fig. 4 is that this utility model embodiment has cuing open of being connected with ball cup of rivet nut in the ilium nail of bone induction material coating
View.
Reference:
Rivet nut 10；
Bar portion 101；
Head 102；
Adapter 20；
Sleeve 201；
U-shaped storage breach 2011；
External screw thread 2012；
Gear is along 2013；
Nut 202；
Circumferential wall 2021；
Roof 2022；
Conflict platform 2023；
Arc positioning groove 2024；
Ball cup 203；
Through hole 2031；
Sphere 2032；
Stage portion 2033.
The realization of this utility model purpose, functional characteristics and advantage will in conjunction with the embodiments, are described further referring to the drawings.
Detailed description of the invention
Of the present utility model embodiment is described below in detail, and the example of described embodiment is shown in the drawings, the most ad initio
Represent same or similar element to same or similar label eventually or there is the element of same or like function.Below by ginseng
It is exemplary for examining the embodiment that accompanying drawing describes, it is intended to be used for explaining this utility model, and it is not intended that to this utility model
Restriction.
In description of the present utility model, it is to be understood that term " center ", " longitudinally ", " laterally ", " length ", " width
Degree ", " thickness ", " go up vertically ", " level ", " top, ", " under ", " front ", " afterwards " a, " left side ", " right side ", " ", " end " " interior ", " outward ", " suitable
Orientation or the position relationship of the instructions such as hour hands ", " counterclockwise " they are based on orientation shown in the drawings or position relationship, merely to just
Describe in description this utility model and simplification rather than indicate or imply that the device of indication or element must have specific side
Position, with specific azimuth configuration and operation, therefore it is not intended that to restriction of the present utility model.
Additionally, term " first ", " second " are only used for describing purpose, and it is not intended that instruction or hint relative importance
Or the implicit quantity indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can express or
Implicitly include one or more this feature.In description of the present utility model, " multiple " are meant that two or two
Above, unless otherwise expressly limited specifically.
In this utility model, unless otherwise clearly defined and limited, term " install ", " being connected ", " connection ", " solid
Fixed " wait term to be interpreted broadly, for example, it may be fixing connection, it is also possible to it is to removably connect, or is integrally connected；Can
To be mechanical connection, it is also possible to be electrical connection；Can be to be joined directly together, it is also possible to be indirectly connected to by intermediary, Ke Yishi
The connection of two element internals.For the ordinary skill in the art, above-mentioned term can be understood as the case may be
Concrete meaning in this utility model.
Referring to figs. 1 through shown in Fig. 2, this utility model embodiment provides a kind of ilium with bone induction material coating
Nail, including rivet nut 10 and adapter 20.
Rivet nut 10 includes that the head 102 of the one end in bar portion 101 and bar portion 101, the surface in described bar portion 101 have at least one
Part surface has external screw thread, and described externally threaded surface-coated has bone induction material layer (not shown).
Adapter 20 is fixing in order to be connected with spinal rod by described head 102, the head 102 of such as rivet nut 10 and adapter
20 connect, and adapter 20 is connected with spinal rod, so, can realize rivet nut 10 and be connected with spinal rod fixing.
As preferably, bone induction material layer is hydroxyapatite and/or magnesium metal.
Hydroxyapatite (hydroxyapatit, HA) is the bioceramic material of a kind of nonabsorable, and molecular formula is Ca
10 (PO 4) 6 (OH) 2, its chemical composition and natural bone tissue, tooth are close, and (tooth and bone matrix are all to the most hundreds of by tens nanometer
The hydroxylapatite crystal composition of nanometer, has the structure of similar pottery), therefore, it has biocompatibility and the nothing of height
Bio-toxicity, nonirritant, without sensitization, non-carcinogenesis.Hydroxyapatite has good bone guided power, energy and inside of human body
Being organized on interface formation topochemistry key to combine, hydroxyapatite is by carrying out calcium, phosphonium ion with the sclerotin of surrounding
Exchanging and reach to integrate completely, new bone and hydroxyapatite exist without fibrous connective tissue on interface, and bond strength is the highest,
Based on above-mentioned plurality of advantages, using hydroxyapatite as bone induction material, osteogenetic ability can be excited, promote bone tissue growth
Healing, and so that formed between rivet nut 10 and sclerotin and combine closely, it is ensured that its reliability connected.
And magnesium is drawn materials metal material widely as one, is human essential elements, participates in important metabolic activity,
Research in recent years proves that it has good biocompatibility, can be absorbed by the body, and the magnesium of excess can discharge body by urine
Outward, there is higher safety.Magnesium can produce Mg (OH) 2, the in vivo effect of 150mmol/L chloride ion in biological internal environment
Under, the magnesium ion compound of solubility can be quickly formed, can be absorbed by human body.Magnesium have relatively low Young's modulus (40～
The series of advantages such as 45GPa), and the dense bone of human body is close, and specific strength, specific stiffness are high, are preferable biomaterials.Except this it
Outward, magnesium metal also has good self-bone grafting ability, therefore, using magnesium as bone induction material, owing to magnesium alloy is in degradation process
The magnesium ion of middle release and at the alkaline environment formed about, can cause bone morphogenetic protein in magnesium alloy surrounding tissue
(BMP-2) increase, and then stimulate the differentiation of pluripotency mesenchymal cell, growth, cause the New born formation of local, and then, also
Combine closely so that formed between rivet nut 10 and sclerotin, it is ensured that its reliability connected.
It should be noted that the shortcoming of common hydroxyapatite to be fragility big, fracture toughness be only titanium alloy 1/70～
1/40, fatigue resistance is poor, and the porous of material makes its mechanical strength decline further.And magnesium has relatively low Young mould
Measuring (40～45GPa), and the dense bone of human body is close, the series of advantages such as specific strength, specific stiffness are high, therefore, by magnesium and hydroxyl phosphorus
Lime stone compound use, can overcome the defect of hydroxyapatite, improves its intensity, especially in ilium position, and its stress effect
Relatively big, only it is provided with enough intensity, adopts and can ensure that its Bone Defect Repari is effective.
It is understood that as preferably, in bar portion 101, only the part in implanting bone coats bone induction material layer,
And then play and increase the affine of screw and bone, and then improve the bone hold to screw, and increase stable, pre-anti-loosening grade acts on.
With reference to shown in Fig. 2 to Fig. 4, in an embodiment of the present utility model, adapter 20 includes sleeve 201 and nut
202, sleeve 201 one end is connected with described head 102 universal rotational, say, that head 102 and the sleeve 201 1 of rivet nut 10
Can be with universal rotational between end.The sidewall of sleeve 201 other end is provided with two relative U-shaped storage breach extended along axis
2011, this U-shaped storage breach 2011 is for receiving placement spinal rod.Nut 202 and the described other end of described sleeve 201
Threaded, after nut 202 is threadeded with the other end described in sleeve 201, U-shaped storage breach 2011 i.e. forms closing
State, its internal spinal rod can be fixed on sleeve 201.
Owing to ilium is one of part bigger as load-bearing in human body, so, the bigger pressure received, corresponding,
When ilium nail is fixed in ilium, also can be subject to bigger pressure, now, so, the head 102 of ilium nail is fixing with spinal rod
Connect and immobile, then water occurs that stress is concentrated, and causes the problems such as ilium damage.In view of this, in the present embodiment, due to
Can therefore, it can so that internal stress is dispersed with universal rotational between head 102 and sleeve 201 one end of rivet nut 10, and then
Ilium is avoided to damage.Additionally, the head 102 of rivet nut 10 uses universal rotational connected mode with sleeve 201 one end, it is also convenient in nail
The adjustment in body 10 direction, and then adapt it to the direction, nail road determined.
With reference to shown in Fig. 3, Fig. 4, in a specific embodiment of the present utility model, described one end of sleeve 201 is provided with
Ball cup 203, through hole 2031 on described ball cup 203, the hole wall of described through hole 2031 is sphere 2032, described bar portion 101 by
Described through hole 2031 passes, and described head 102 is the spherical structure suitable with described sphere 2032.
It is to say, by coordinating between sphere 2032 and the spherical head 102 in ball cup 203, can realize
Between described one end and the head 102 of rivet nut 10 of sleeve 201, universal rotational is connected, and it rotates smooth-going, simple in construction, assembling side
Just.
More specifically, in an example of utility model, described one end of sleeve 201 is formed with side radially inward
The gear protruded is along 2013, and described ball cup 203 is arranged in sleeve 201, and described ball cup 203 is formed axially projecting
Stage portion 2033, described stage portion 2033 backstop in described gear along 2013.
It is to say, ball cup 203 is disposed on the inside of one end described in sleeve 201, and be with described in sleeve 201
Stage portion 2033 in one end offsets, and so, ball cup 203 is limited in sleeve 201.Use this structure, its structure
Simply, it is to need to load ball cup 203 from the other end described in sleeve 201 during assembling, easy to assembly.
In a preferred embodiment of the present utility model, the outer surface of the described other end of sleeve 201 is provided with external screw thread
2012, described nut 202 has the female thread mated with described external screw thread 2012.
It should be noted that in prior art, be typically all and arrange female thread on sleeve 201, then by the appearance of plug screw
Face arranges external screw thread, carries out utilizing plug screw and sleeve 201 threaded engagement, and this thread fiting mode, owing to offering on sleeve 201
There are two relative U-shapeds storage breach 2011, and, this U-shaped storage breach 2011 is relatively large, therefore, and its sleeve 201 upper
End is equivalent to be divided into relative two semi-circular portion, it is clear that its intensity is greatly lowered, threaded by plug screw
After, and integrally-built the lowest, when by bigger pressure, the spinal rod in its U-shaped storage breach 2011 and sleeve 201 phase
Active force between Hu causes other end deformation described in sleeve 201, even damages, in turn results in sleeve 201 and get loose with spinal rod,
The problems such as vertebra solid failure.And in the present embodiment, external screw thread is set by the outer surface of the described other end at sleeve 201
2012, then with nut 202 threaded engagement, so, the described other end of sleeve 201 is played booster action, Ke Yiti by nut 202
Its intensity high, and then in use spinal rod is reliable with sleeve 201 fixation, it is to avoid prior art causes because of structure problem
The problem such as spinal column solid failure.
With reference to shown in Fig. 3, more favorably, in an embodiment of the present utility model, nut 202 includes lid and supports
Touching platform 2023, lid includes that circumferential wall 2021 and roof 2022, described circumferential wall 2021 are provided with described female thread.Conflict platform 2023
Formation, the axis of described conflict platform 2023 and described lid is protruded along the direction towards described sleeve 201 from described roof 2022
Dead in line, and diameter is less than the internal diameter of described sleeve 201.
It is to say, be formed with conflict platform 2023 on nut 202, when nut 202 is threaded on sleeve 201 and downward
During motion, conflict platform 2023 stretches in sleeve 201, and moves downward with nut 202, when moving downwardly to certain position,
The free end end face (namely lower end surface) of conflict platform 2023 offsets with the spinal rod being located in U-shaped storage breach 2011,
And then spinal rod is pressed abd fixed in U-shaped storage breach 2011, it is ensured that spinal rod is reliable with sleeve 201 fixation.
As preferably, the height of conflict platform 2023 is more than the height of described circumferential wall 2021, so, with nut 202
When moving downward, it is possible to faster get involved the compressing to spinal rod, and then play the effect that is preferably fixed.
In an embodiment of the present utility model, the free end end face of conflict platform 2023 is provided with and is formed and described spinal column
The arc positioning groove 2024 that rod is suitable.So, when conflict platform 2023 free end end face (namely lower end surface) with wear
When spinal rod in U-shaped storage breach 2011 offsets, spinal rod is located just in this arc positioning groove 2024, plays location and makees
With, it is ensured that spinal rod is fixing more firm.
This utility model embodiment provides a kind of spinal fixing device, including the tool described in spinal rod and above-described embodiment
The ilium having bone induction material coating is followed closely, and described adapter 20 is fixedly connected on described spinal rod.
Concrete, in the U-shaped storage breach 2011 that spinal rod is located on sleeve 201, nut 202 and sleeve 201 screw thread
After connection, on it, spinal rod is pressed abd fixed on U-shaped storage breach 2011 by conflict platform 2023.
The ilium nail with bone induction material coating provided according to this utility model and spinal fixing device, by nail
Coat one layer of bone induction material on the external screw thread of body 10, on the one hand, the biological activity of bone induction material can be utilized, excite bone raw
The ability become, promotes bone tissue growth healing, and so that formed between rivet nut 10 and sclerotin and combine closely, it is ensured that it connects
Reliability, on the other hand, coat bone induction material, rivet nut 10 can be avoided directly to contact with sclerotin, it is to avoid infection etc. occurs
Problem.Additionally, adapter 20 can realize be connected fixing with spinal rod, fastness and the reliability of connection are higher.
In the description of this specification, reference term " embodiment ", " some embodiments ", " example ", " specifically show
Specific features, structure, material or the spy that the description of example " or " some examples " etc. means to combine this embodiment or example describes
Point is contained at least one embodiment of the present utility model or example.In this manual, the schematic table to above-mentioned term
State and be not necessarily referring to identical embodiment or example.And, the specific features of description, structure, material or feature can be
Any one or more embodiments or example combine in an appropriate manner.
Although above it has been shown and described that embodiment of the present utility model, it is to be understood that above-described embodiment is
Exemplary, it is impossible to it is interpreted as that those of ordinary skill in the art is without departing from this utility model to restriction of the present utility model
Principle and objective in the case of above-described embodiment can be changed in the range of this utility model, revise, replace and
Modification.
Claims (10)
1. an ilium nail with bone induction material coating, it is characterised in that including:
Rivet nut, described rivet nut includes that the head of the one end in bar portion and bar portion, the surface in described bar portion have at least some of surface
Having external screw thread, described externally threaded surface-coated has bone induction material layer；
Adapter, fixing in order to described head is connected with spinal rod.
The ilium nail with bone induction material coating the most according to claim 1, it is characterised in that described adapter bag
Include:
Sleeve, described sleeve one end is connected with described head universal rotational, and the sidewall of the described sleeve other end is provided with two relatively
Along axis extend U-shaped storage breach；
Nut, described nut is threadeded with the described other end of described sleeve.
The ilium nail with bone induction material coating the most according to claim 2, it is characterised in that described sleeve described
One end is provided with ball cup, through hole on described ball cup, and the hole wall of described through hole is sphere, and described bar portion is passed by described through hole,
Described head is the spherical structure suitable with described sphere.
The ilium nail with bone induction material coating the most according to claim 3, it is characterised in that described sleeve described
One end is formed with the gear edge that side is protruded radially inward, and described ball cup is arranged in sleeve, and described ball cup is formed with edge
Axially projecting stage portion, described stage portion backstop is in described gear edge.
The ilium nail with bone induction material coating the most according to claim 2, it is characterised in that described sleeve described
The outer surface of the other end is provided with external screw thread, and described nut has the female thread mated with described external screw thread.
The ilium nail with bone induction material coating the most according to claim 5, it is characterised in that described nut includes:
Lid, described lid includes that circumferential wall and roof, described circumferential wall are provided with described female thread；
Conflict platform, described conflict platform protrudes formation, the axis of described conflict platform from described roof along the direction towards described sleeve
With the dead in line of described lid, and diameter is less than the internal diameter of described sleeve.
The ilium nail with bone induction material coating the most according to claim 6, it is characterised in that described conflict platform from
It is provided with by end end face and is formed with the arc positioning groove suitable with described spinal rod.
The ilium nail with bone induction material coating the most according to claim 6, it is characterised in that the height of described conflict platform
Degree is more than the height of described circumferential wall.
The ilium nail with bone induction material coating the most according to claim 1, it is characterised in that described bone induction material
Layer is hydroxyapatite and/or magnesium metal.
10. a spinal fixing device, it is characterised in that including:
Spinal rod；
Having the ilium nail of bone induction material coating as claimed in any one of claims 1-9 wherein, described adapter is fixing to be connected
In described spinal rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620054923.XU CN205514862U (en) | 2016-01-20 | 2016-01-20 | Ilium nail and vertebra fixing device with material coating is inductiond to bone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620054923.XU CN205514862U (en) | 2016-01-20 | 2016-01-20 | Ilium nail and vertebra fixing device with material coating is inductiond to bone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205514862U true CN205514862U (en) | 2016-08-31 |
Family
ID=56766811
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620054923.XU Expired - Fee Related CN205514862U (en) | 2016-01-20 | 2016-01-20 | Ilium nail and vertebra fixing device with material coating is inductiond to bone |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205514862U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105496540A (en) * | 2016-01-20 | 2016-04-20 | 北京大学深圳医院 | Iliac screw with bone induction material coating and spine fixing device |
| CN107260279A (en) * | 2017-06-01 | 2017-10-20 | 成都贝施美生物科技有限公司 | A kind of spine nail rod fixed system |
-
2016
- 2016-01-20 CN CN201620054923.XU patent/CN205514862U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105496540A (en) * | 2016-01-20 | 2016-04-20 | 北京大学深圳医院 | Iliac screw with bone induction material coating and spine fixing device |
| CN107260279A (en) * | 2017-06-01 | 2017-10-20 | 成都贝施美生物科技有限公司 | A kind of spine nail rod fixed system |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
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| CF01 | Termination of patent right due to non-payment of annual fee |