CN206761725U - A kind of interface nail with HA coatings - Google Patents
A kind of interface nail with HA coatings Download PDFInfo
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- CN206761725U CN206761725U CN201621363315.3U CN201621363315U CN206761725U CN 206761725 U CN206761725 U CN 206761725U CN 201621363315 U CN201621363315 U CN 201621363315U CN 206761725 U CN206761725 U CN 206761725U
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Abstract
The utility model discloses a kind of interface nail with HA coatings, the interface nail includes main body, the main body is made up of PEEK materials, multiple micropores are provided with the body, the porosity of the interface nail is between 20% to 85%, the diameter of the micropore is between 0.1mm to 1mm, the main body includes front-end and back-end, the front end is cone, the front end and the rear end connect as one, HA coatings are coated with the outer surface of the main body, the interface is followed closely in anterior cruciate ligament operation.Interface nail of the present utility model with HA coatings, has preferable biocompatibility, new bone growth effect is good, does not allow in use easy to fall off, and manufacturing process is simple, and cost is low.
Description
Technical field
It the utility model is related to surgical implant, more particularly to a kind of interface nail with HA coatings.
Background technology
Anterior cruciate ligament, also known as anterior cruciate ligament, in knee joint, femur and shin bone are connected, main function is limitation
Shin bone excessively shifts forward, it with knee joint in other structures collective effect, be to maintain knee to close to maintain kneed stability
One of stable primary structure is saved, physical efficiency is made one and completes various complicated and highly difficult lower limb movement.
Tears of anterior cruciate ligament causes instability of knee, and malpractice will cause knee joint function serious hindrance.Due to damage
It is larger to hinder violence, often merge other primary structures damage, diagnose, deal with improperly will delay treatment, simultaneously because it is preceding intersect it is tough
The mechanics function of band is increasingly paid attention to, and damage after caused by feature it is unstable, caused by knee joint can not meet day
Often live and motion needs, and can cause knee joint it is a series of after lose lesions, therefore should row operative treatment, ligament and
Its function.
Anterior Cruciate Ligament Ruptures operation can use interference screw or button plate tendon graft is fixed, still
Interference screw further have impact on tensile strength and tendon and the knitting of tendon to the dissection of tendon graft.And button
Plate, which fixes adjoint " rain brush effect " and " bungee jumping effect ", may destroy biological healing processes of the graft in osseous tunnel.
And the poor biocompatibility of existing metal interface nail, easily produce rejection.And absorbable interface nail is not
Larger difference all be present with the infiltration rate in human body and absorbable degree, therefore surgical effect is unstable.
Accordingly, it is desirable to provide a kind of interface with HA coatings is followed closely to solve the above problems.
Utility model content
In order to solve the problem, the utility model discloses a kind of interface nail with HA coatings, the interface nail includes
Main body, the main body are made up of PEEK materials, are provided with multiple micropores, the porosity of the interface nail on the body
Between 20% to 85%, the diameter of the micropore is between 0.1mm to 1mm, and the main body includes front-end and back-end, before described
Hold and connected as one for cone, the front end and the rear end, HA coatings are coated with the outer surface of the main body, it is described
Follow closely in anterior cruciate ligament operation at interface.
It is preferred that the thickness of the HA coatings is 50 to 75 microns.
It is preferred that the crystallinity of the HA coatings, more than 95%, the granular size of the HA coatings is between 50-80 microns.
It is preferred that the porosity of the interface nail is 30% to 50%.
It is preferred that the diameter of the micropore is between 0.4mm to 0.6mm.
It is preferred that the surface roughness of the main body is between 0.2 micron to 10 microns.
It is preferred that being provided with external screw thread on the front end and the rear end, the external screw thread outer is smooth.
It is preferred that the main body is arranged to cone on the whole.
It is preferred that the rear end can be cylinder or cuboid.
Interface nail of the present utility model with HA coatings, has preferable biocompatibility, and new bone growth effect is good,
Do not allow easy to fall off during use, manufacturing process is simple, and cost is low.
A series of concept of reduced forms is introduced in utility model content part, this will be in specific embodiment part
Middle further description.The utility model content part is not meant to attempt to limit technical scheme claimed
Key feature and essential features, do not mean that the protection domain for attempting to determine technical scheme claimed more.
Below in conjunction with accompanying drawing, advantages and features of the present utility model are described in detail.
Brief description of the drawings
Fig. 1 is the schematic diagram followed closely according to the interface with HA coatings of the utility model one embodiment.
Embodiment
In the following description, a large amount of concrete details are given more thoroughly to manage the utility model to provide
Solution.It will be apparent, however, to one skilled in the art that the utility model can be without one or more of these thin
Save and be carried out.In other examples, in order to avoid obscuring with the utility model, for more well known in the art
Technical characteristic is not described.
In order to thoroughly understand the utility model, detailed structure will be proposed in following description.Obviously, the utility model
Execution be not limited to the specific details that those skilled in the art is familiar with.Preferred embodiment of the present utility model is retouched in detail
State it is as follows, but except these detailed description in addition to, the utility model can also have other embodiment.
Embodiment of the present utility model is described in detail below in conjunction with accompanying drawing.
With reference to figure 1, followed closely according to the interface with HA (hydroxyapatite) coating of the utility model one embodiment
Schematic diagram.Interface nail of the present utility model, is manufactured using PEEK (polyether-ether-ketone).PEEK materials have excellent biocompatibility
And mechanical property, human body can be chronically implanted and do not cause human body to repel.PEEK density of material is low, and porous PEEK materials are more
The quality of implant can be reduced, in addition, the modulus of elasticity of PEEK materials can be good at stimulating osteanagenesis close to human Cortex's bone.
Interface nail of the present utility model with HA coatings includes main body 1, and main body 1 includes front end 2 and rear end 3.Front end 2 is
Cone, front end 2 and rear end 3 connect as one.The above-mentioned interface nail front end with HA coatings is taper, into osseous tunnel and flesh
Resistance is smaller when between tendon graft, and to tendon graft without dissection.In one example, rear end 3 can be cylinder
Body, further to reduce resistance.In another example, rear end 3 can be cuboid.In addition, main body 1 can also be set on the whole
It is equipped with cone.Because front end is taper, resistance is smaller during between osseous tunnel and tendon graft, and to tendon graft
Without dissection.
It is preferred that as shown in figure 1, external screw thread is provided with front end 2 and rear end 3, external screw thread outer is smooth, equally to tendon
Graft is without dissection.Due to there is provided screw thread, being more prone to be implanted into, and improve the stability of combination.
Multiple micropores 4 are provided with the body 1, and the interface nail of the present utility model with HA coatings can be good at inducing
New bone follows closely surface and tumor growth at interface.
HA coatings are additionally provided with the outer surface of main body 1.It is preferred that the thickness of the HA coatings is between 50-70 microns.
HA has the composition of similar skeleton mineral, has good bioactivity.HA coatings in the utility model can conduct
The matrix of Bone Ingrowth, bone tissue is set to form synostosis with implant.
HA coatings can use to enter the methods of plasma spraying method, electrochemical deposition method, ion implantation, laser cladding
OK, it is preferred to use plasma spraying method.The HA coatings of formation, its crystallinity requirements is more than 95%, and preferably more than 98%.HA
Granular size between 50 to 80 microns.
Setting for micropore, if the quantity set is excessive, the overall intensity of interface nail can be influenceed, if the number set
Measure very few, then telling on for new bone can be made bad.Therefore, select suitable porosity particularly important.Porosity is hole
Cumulative volume accounts for the ratio of small product size.Its calculation is as follows：
In formula：P is porosity (%), drFor material actual density (g/cm3), dthFor materials theory density (g/cm3)。
Through overtesting, it has been found that the selection of porosity can obtain preferably new bone life between 25%-85%
It is long.Experiment is following (without HA coatings in this experiment)：
1. using 3D printing PEEK technologies, using laser sintered PEEK powder, produce of the present utility model with HA paintings
The interface nail of layer.The length of interface nail be 25mm, a diameter of 8mm at screw thread, a diameter of 5mm at non-threaded, pore diameter select be
0.5mm.Under above-mentioned parameter identical parameter, the interface that porosity is 25%, 30%, 40%, 50%, 85% is prepared respectively and is followed closely.
2. subjects use healthy adult domesticated dog, body weight is about 13 kilograms.It is divided into five groups, every group 4.Wherein A groups are adopted
Followed closely with the interface that porosity is 25%, B groups porosity is that 30%, C groups porosity is that 40%, D groups porosity is 50%, E groups hole
Gap rate is 85%.
3. above-mentioned subjects are manufactured into Cranial defect, defect area and interface nail size one in condylus lateralis femoris centre
Cause.It is implanted into sewing-up cut after interface is followed closely.
4. after operation 3 months, subjects condylus lateralis femoris sample is taken.Freshman bone tissue at Cranial defect is quantitatively divided
Analysis.Calculation is：
Gross area x100% in N=bone tissues area/visual field.
Wherein N is freshman bone tissue's area ratio.
When carrying out quantitative analysis, the full microscope of in the market can be used to carry out IMAQ, and pass through image
Analysis software (such as Image pro etc.) carries out quantitative analysis.As a result it is as follows：
| Group | N (average value) |
| A groups (porosity 25%) | 10.33 |
| B groups (porosity 30%) | 14.87 |
| C groups (porosity 40%) | 19.23 |
| D groups (porosity 50%) | 27.70 |
| E groups (porosity 85%) | 52.86 |
It can be seen from the results above that porosity is higher, then the growth of new bone is better.Therefore, if do not consider intensity etc. because
Element, the interface nail that porosity is higher can be selected.But if porosity is too high, intensity is influenceed.It is therefore advantageous to
, porosity is selected in 30%-50%.More excellent selection is 40%.
Above-mentioned experiment is repeated, the HA coatings that will be set on above-mentioned holdfast in the utility model, the thickness of coating is 50
Micron, then result is as follows：
It can be seen from the results above that after HA coatings are set, freshman bone tissue's area is than obvious increase, increased amplitude
About between 15%-25%.
The aperture of above-mentioned micropore 4 can be selected between 0.1mm-1mm.Preferably, aperture 0.4mm-0.6mm.
In addition, in order to promote blood platelet attachment and the adhesion of fibrin block, initial stabilization is provided for getting up early bon e formation
Environment, the roughness R on the surface of the interface nail in the utility modelaSelection is more than 0.2 micron and is less than 10 microns.
As described above, the preparation of interface nail of the present utility model can use laser sintered 3D printing PEEK technologies, utilize
Laser sintered PEEK powder, " printing " go out the interface nail with HA coatings.The preparation of interface nail of the present utility model need to only use
PEEK powder, compared to PEEK section bars, the cost of powder substantially reduces, and is lost low.And preparation process need not be added and made
Hole agent, thus be not in cleaning it is unclean caused by pollution be topic, and technique is simple, and cost is low.
Interface nail of the present utility model with HA coatings, has preferable biocompatibility, and new bone growth effect is good,
Do not allow easy to fall off during use, manufacturing process is simple, and cost is low.
The utility model is illustrated by above-described embodiment, but it is to be understood that, above-described embodiment is
For the purpose illustrated and illustrated, and it is not intended to the utility model being limited in described scope of embodiments.In addition ability
Field technique personnel are it is understood that the utility model is not limited to above-described embodiment, according to teaching of the present utility model also
More kinds of variants and modifications can be made, these variants and modifications all fall within the utility model scope claimed with
It is interior.The scope of protection of the utility model is defined by the appended claims and its equivalent scope.
Claims (9)
1. a kind of interface nail with HA coatings, it is characterised in that the interface nail includes main body, and the main body is by PEEK materials
Be made, be provided with multiple micropores on the body, the porosity of the interface nail between 20% to 85%, the micropore
For diameter between 0.1mm to 1mm, the main body includes front-end and back-end, and the front end is cone, the front end and it is described after
End is connected as one, and HA coatings are coated with the outer surface of the main body, and the interface is followed closely in anterior cruciate ligament operation.
2. followed closely according to the interface with HA coatings described in claim 1, it is characterised in that the thickness of the HA coatings be 50 to
75 microns.
3. followed closely according to the interface with HA coatings described in claim 2, it is characterised in that the crystallinity of the HA coatings exists
More than 95%, the granular size of the HA coatings is between 50-80 microns.
4. followed closely according to the interface with HA coatings described in claim 1, it is characterised in that the porosity of the interface nail is
30% to 50%.
5. followed closely according to the interface with HA coatings described in claim 1, it is characterised in that the diameter of the micropore is in 0.4mm
To between 0.6mm.
6. followed closely according to the interface with HA coatings described in claim 1, it is characterised in that the surface roughness of the main body exists
Between 0.2 micron to 10 microns.
7. followed closely according to the interface with HA coatings any one of claim 1-6, it is characterised in that the front end and institute
State and external screw thread is provided with rear end, the external screw thread outer is smooth.
8. followed closely according to the interface with HA coatings any one of claim 1-6, it is characterised in that the main body is overall
On be arranged to cone.
9. followed closely according to the interface with HA coatings any one of claim 1-6, it is characterised in that the rear end can be with
For cylinder or cuboid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621363315.3U CN206761725U (en) | 2016-12-12 | 2016-12-12 | A kind of interface nail with HA coatings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621363315.3U CN206761725U (en) | 2016-12-12 | 2016-12-12 | A kind of interface nail with HA coatings |
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| Publication Number | Publication Date |
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| CN206761725U true CN206761725U (en) | 2017-12-19 |
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| CN201621363315.3U Active CN206761725U (en) | 2016-12-12 | 2016-12-12 | A kind of interface nail with HA coatings |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10575886B2 (en) | 2018-05-09 | 2020-03-03 | Warsaw Orthopedic, Inc. | Bone screw and method of manufacture |
| US10993753B2 (en) | 2018-05-09 | 2021-05-04 | Warsaw Orthopedic, Inc. | Bone screw and method of manufacture |
| US11191582B2 (en) | 2018-05-09 | 2021-12-07 | Warsaw Orthopedic, Inc. | Bone screw and method of manufacture |
| US11224470B2 (en) | 2018-05-09 | 2022-01-18 | Warsaw Orthopedic, Inc. | Bone screw and method of manufacture |
-
2016
- 2016-12-12 CN CN201621363315.3U patent/CN206761725U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10575886B2 (en) | 2018-05-09 | 2020-03-03 | Warsaw Orthopedic, Inc. | Bone screw and method of manufacture |
| US10993753B2 (en) | 2018-05-09 | 2021-05-04 | Warsaw Orthopedic, Inc. | Bone screw and method of manufacture |
| US11191582B2 (en) | 2018-05-09 | 2021-12-07 | Warsaw Orthopedic, Inc. | Bone screw and method of manufacture |
| US11224470B2 (en) | 2018-05-09 | 2022-01-18 | Warsaw Orthopedic, Inc. | Bone screw and method of manufacture |
| US11589907B2 (en) | 2018-05-09 | 2023-02-28 | Warsaw Orthopedic, Inc. | Bone screw and method of manufacture |
| US11857233B2 (en) | 2018-05-09 | 2024-01-02 | Warsaw Orthopedic, Inc. | Bone screw and method of manufacture |
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