CN104706445A - Acetabulum lined prosthesis with capillary tube structure - Google Patents
Acetabulum lined prosthesis with capillary tube structure Download PDFInfo
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- CN104706445A CN104706445A CN201510068391.5A CN201510068391A CN104706445A CN 104706445 A CN104706445 A CN 104706445A CN 201510068391 A CN201510068391 A CN 201510068391A CN 104706445 A CN104706445 A CN 104706445A
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- China
- Prior art keywords
- pipe structure
- capillary pipe
- acetabular bone
- bone liner
- prosthesis
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Abstract
The invention relates to an acetabulum lined prosthesis with a capillary tube structure. The acetabulum lined prosthesis with the capillary tube structure comprises an inner surface 1, a base body 2 and an outer surface 3. The acetabulum lined prosthesis base body 2 is made of metal materials having biocompatibility. The capillary tube structure 4 is arranged in the base body 2. The capillary tube structure 4 can be a V-shaped structure or a U-shaped structure. The cross section of the capillary tube structure 4 is round or oval or polygonal, and the capillary tube structure 4 is formed through the 3D printing technology. By the adoption of the acetabulum lined prosthesis with the capillary tube structure, the abrasion of the friction interface of the hip joint can be reduced, and the service life of the hip joint prosthesis is prolonged.
Description
Technical field
The invention belongs to technical field of medical instruments, relate to a kind of artificial hip prosthesis, especially a kind of acetabular bone liner prosthese with capillary pipe structure for hip replacement.
Background technology
Artificial hip prosthesis, after being implanted to human body, depends on the friction and wear behavior at prosthese interface its service life to a great extent.Interface friction specifically comprises: dry friction, boundary friction and infiltration friction, the wear rate wherein infiltrating friction is minimum.Improve the service life of artificial hip prosthesis, optimal mode makes frictional interface be in infiltration Frotteurism for a long time exactly in lifetime.
What adopt between femoral head prosthesis and acetabular component in current artificial hip prosthesis is the form of dry friction, certain gap is designed between frictional interface, for holding tissue fluid or blood, its objective is and make frictional interface reach boundary friction or infiltrate the effect of friction.But, no matter adopt ceramic/metal to polyethylene, ceramic-on-ceramic, any compatibility mode of metal to metal, all have no idea to make friction pair be in wet face state completely.
In order to address this problem, the present invention creatively proposes capillary pipe structure to be applied in frictional interface, utilize capillarity to form one deck liquid film on articular prosthesis surface, frictional interface just can be made to be in wet face state for a long time, reach the effect extending articular prosthesis service life.
Summary of the invention
The object of the invention is the wearing and tearing in order to reduce hip prosthesis frictional interface, extending the service life of hip prosthesis.
For realizing the above object, the present invention takes following technical scheme:
Acetabular bone liner prosthese with capillary pipe structure comprises inner surface 1, matrix 2 and outer surface 3, it is characterized in that: acetabular bone liner prosthesis body 2 is made up of the metal material with biocompatibility, there is in matrix 2 capillary pipe structure 4, capillary pipe structure 4 can adopt V-structure or U-shaped structure, the shape of cross section of capillary pipe structure 4 adopts circular 4.1, oval 4.2 or polygon 4.3, during cross section employing polygon, polygonal limit number preferably adopts 3 ~ 10, and the cross-sectional area of capillary pipe structure 4 is preferably 0.01mm
2~ 0.25mm
2, the pitch of holes of capillary pipe structure 4 on outer surface 3 is preferably 1mm ~ 5mm, and the acetabular bone liner prosthese with capillary pipe structure adopts the molding of 3D printing technique.
Advantage of the present invention is:
1, the acetabular bone liner prosthese with capillary pipe structure utilizes the capillary pipe structure of acetabular bone liner prosthese inner surface by the liquid adsorption such as tissue fluid or blood in capillary pipe structure, when acetabular bone liner prosthese mates with femoral head prosthesis, one deck liquid film can be full of under pressure between frictional interface, this layer of liquid film can make femoral head prosthesis and acetabular component in motor process, be in infiltration Frotteurism, this will reduce wear rate greatly, the significant service life extending hip prosthesis.
The general way of 2, fixing for artificial hip joint biotype is: acetabular component is divided into acetabular outer cup and acetabular bone liner, if wherein acetabular bone liner prosthese adopts metal material, its inner surface requires to have high roughness requirements.The present invention, because introduced capillary pipe structure, makes the inner surface of acetabular bone liner prosthese not need very high roughness requirements, and processing is easier, and cost is lower.
Accompanying drawing explanation
Fig. 1 is according to the acetabular bone liner prosthese with capillary pipe structure of the present invention;
Fig. 2 is the acetabular bone liner prosthese with capillary pipe structure according to another embodiment of the present invention, has V-type capillary pipe structure;
Fig. 3 is the acetabular bone liner prosthese with capillary pipe structure according to another embodiment of the present invention, has U-shaped capillary pipe structure;
Fig. 4 is with the capillary pipe structure cross sectional representation in the acetabular bone liner prosthese of capillary pipe structure according to of the present invention;
Fig. 5 prints machine-shaping process schematic according to the 3D of the acetabular bone liner prosthese with capillary pipe structure of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the invention will be further described, but the present invention is not limited to following embodiment.
Acetabular bone liner prosthese with capillary pipe structure comprises inner surface 1, matrix 2 and outer surface 3.Inner surface 1 is the spherical surface of standard hemisphere, and bulb diameter is preferred: 22mm, 26mm, 28mm, 32mm, 36mm and 40mm.
Acetabular bone liner prosthesis body 2 is made up of the metal material with biocompatibility, and metal material is preferred: titanium alloy, rustless steel and vitallium.
Tight arrangement capillary pipe structure 4 in acetabular bone liner prosthesis body 2, this structure does not allow inner surface 1 to be communicated with outer surface 3, otherwise will sufficient and necessary condition inner surface 1 being formed liquid film be lost, because inner surface 1 and outer surface 3 are once be communicated with, by under the pressure that the liquid of capillary attraction will produce when femoral head prosthesis and acetabular component move mutually, flow to outside outer surface 3, and there will be the lasting loss of liquid, so it is the first element of acetabular bone liner prosthetic designs with capillary pipe structure that inner surface 1 and outer surface 3 are not communicated with.
Capillary pipe structure 4 can present various structures form in matrix 2, the preferred V-structure of these versions and U-shaped structure, as shown in Figures 2 and 3.The version of capillary pipe structure 4 must ensure that opening is on inner surface 1, and pipe shaft path is in matrix 2.Because the absorbability of capillary tube depends on the thickness of pipe, so the length of different capillary pipe structures 4 can't affect result of use, this also just makes the version of capillary pipe structure 4 present variation.But simple version is easier to the circulation of liquid in pipe.
The shape of cross section of capillary pipe structure 4 can adopt various ways, circular 4.1, ellipse 4.2 and polygon 4.3, as shown in Figure 4.If employing polygonal crosssection, polygonal limit number should be at least 3, preferably adopts 3 ~ 10.Because less Bian Gengneng embodies shape facility, limit number is more, and polygon characteristic is fuzzyyer, circular or oval feature is more obvious.
The condition that capillary pipe structure 4 has capillarity is that its cross-sectional area is enough little, and cross-sectional area is preferably 0.01mm
2~ 0.25mm
2.Because cross-sectional area is larger, capillarity is more not obvious, and cross-sectional area is less, is more unfavorable for production and processing.If capillary pipe structure 4 adopts square cross-sectional shape, the preferred length of side of its correspondence is 0.1mm ~ 0.5mm.
The pitch of holes of capillary pipe structure 4 on inner surface 1 is preferably 1mm ~ 5mm.Excessive pitch of holes can cause liquid film discontinuous, can not form complete liquid film between frictional interface.Too small pitch of holes can cause processing difficulties, if there is aperture adhesion, significantly will reduce the absorbability of capillary pipe structure 4.
Acetabular bone liner prosthese with capillary pipe structure of the present invention can be prepared as follows.
Select the 3D printer EOSINT M280 of technical grade as process equipment, the printing precision of this printer can reach 0.02mm, the capillary pipe structure processing of the minimum 0.1mm in aperture can be met, the material selected is Ti6Al4V titanium alloy, and 3D printer realizes processing by multilamellar printing type.Specifically be implemented as follows:
The first step: use 3 d modeling software PRO/E that the acetabular bone liner prosthese with capillary pipe structure is carried out three-dimensional modeling, and save as stl form, called after thinhole-liner.stl.The threedimensional model of thinhole-liner.stl is copied in 3D printer by SD card or flash disk.
Second step: in 3D printer, the threedimensional model of thinhole-liner.stl is opened, and carried out slicing treatment, the thickness arranging every layer of section is 0.02mm, the end face that original position is acetabular bone liner is set simultaneously, Print direction is along the axis of acetabular bone liner, and Method of printing is indirect sintering moulding process.
3rd step: load enough Ti6Al4V titanium alloy powders in the print cartridge of 3D printer, the particle diameter≤0.02mm of powder.
4th step: arrange print speed 7mm/s, power 400W, jet size 0.02mm, open 3D printer and carry out printing processing, the course of processing as shown in Figure 5.
5th step: the product printed, without the need to secondary operations, directly carries out quality testing, for the acetabular bone liner prosthese with capillary pipe structure, in cleaning process, must ensure free from admixture blocking in capillary pipe structure, dry abundant no liquid and remain.
Claims (10)
1. with the acetabular bone liner prosthese of capillary pipe structure, comprise inner surface (1), matrix (2) and outer surface (3), it is characterized in that: acetabular component matrix (2) is made up of the metal material with biocompatibility, there is in matrix (2) capillary pipe structure (4), capillary pipe structure (4) is communicated with inner surface (1), is not communicated with outer surface (3).
2. the acetabular bone liner prosthese with capillary pipe structure according to claim 1, is characterized in that described capillary pipe structure (4) is for V-structure (5).
3. the acetabular bone liner prosthese with capillary pipe structure according to claim 1, is characterized in that described capillary pipe structure (4) is for U-shaped structure (6).
4. the acetabular bone liner prosthese with capillary pipe structure according to claim 1, is characterized in that the shape of cross section of described capillary pipe structure (4) is for circular.
5. the acetabular bone liner prosthese with capillary pipe structure according to claim 1, is characterized in that the shape of cross section of described capillary pipe structure (4) is for oval.
6. the acetabular bone liner prosthese with capillary pipe structure according to claim 1, is characterized in that the shape of cross section of described capillary pipe structure (4) is polygon.
7. the acetabular bone liner prosthese with capillary pipe structure according to claim 6, is characterized in that described polygonal limit number is 3 ~ 10.
8. the acetabular bone liner prosthese with capillary pipe structure according to claim 1, is characterized in that the cross-sectional area of described capillary pipe structure (4) is 0.01mm
2~ 0.25mm
2.
9. the acetabular bone liner prosthese with capillary pipe structure according to claim 1, is characterized in that the described pitch of holes of capillary pipe structure (4) on inner surface (1) is 1mm ~ 5mm.
10., according to the preparation method of the arbitrary acetabular bone liner prosthese with capillary pipe structure of claim 1-9, it is characterized in that by the machine-shaping of 3D printing technique.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510068391.5A CN104706445A (en) | 2015-02-05 | 2015-02-05 | Acetabulum lined prosthesis with capillary tube structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510068391.5A CN104706445A (en) | 2015-02-05 | 2015-02-05 | Acetabulum lined prosthesis with capillary tube structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104706445A true CN104706445A (en) | 2015-06-17 |
Family
ID=53406505
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510068391.5A Pending CN104706445A (en) | 2015-02-05 | 2015-02-05 | Acetabulum lined prosthesis with capillary tube structure |
Country Status (1)
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109662810A (en) * | 2019-03-01 | 2019-04-23 | 安徽工程大学 | A kind of artificial knee joint |
| CN110946678A (en) * | 2019-12-31 | 2020-04-03 | 吉林大学 | Design method of bionic porous gradient artificial hip joint substrate |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002325781A (en) * | 2001-04-27 | 2002-11-12 | Kobe Steel Ltd | Artificial joint implant member |
| US20070179613A1 (en) * | 2006-01-30 | 2007-08-02 | Sdgi Holdings, Inc. | Passive lubricating prosthetic joint |
| US20070270975A1 (en) * | 2006-05-12 | 2007-11-22 | Finsbury (Development) Limited | Prosthesis |
| US20080228282A1 (en) * | 2007-03-14 | 2008-09-18 | John Brodowski | Artificial hip with grooved ball or cup for improved lubrication by capillary action |
| CN202761481U (en) * | 2012-08-08 | 2013-03-06 | 嘉思特华剑医疗器材(天津)有限公司 | Bionic double-action full hip device |
| CN103211666A (en) * | 2013-04-25 | 2013-07-24 | 南京理工大学 | Artificial joint bearing surface micro-hole texture capable of improving lubricating performance and abrasion-resistant performance |
-
2015
- 2015-02-05 CN CN201510068391.5A patent/CN104706445A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002325781A (en) * | 2001-04-27 | 2002-11-12 | Kobe Steel Ltd | Artificial joint implant member |
| US20070179613A1 (en) * | 2006-01-30 | 2007-08-02 | Sdgi Holdings, Inc. | Passive lubricating prosthetic joint |
| US20070270975A1 (en) * | 2006-05-12 | 2007-11-22 | Finsbury (Development) Limited | Prosthesis |
| US20080228282A1 (en) * | 2007-03-14 | 2008-09-18 | John Brodowski | Artificial hip with grooved ball or cup for improved lubrication by capillary action |
| CN202761481U (en) * | 2012-08-08 | 2013-03-06 | 嘉思特华剑医疗器材(天津)有限公司 | Bionic double-action full hip device |
| CN103211666A (en) * | 2013-04-25 | 2013-07-24 | 南京理工大学 | Artificial joint bearing surface micro-hole texture capable of improving lubricating performance and abrasion-resistant performance |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109662810A (en) * | 2019-03-01 | 2019-04-23 | 安徽工程大学 | A kind of artificial knee joint |
| CN110946678A (en) * | 2019-12-31 | 2020-04-03 | 吉林大学 | Design method of bionic porous gradient artificial hip joint substrate |
| CN110946678B (en) * | 2019-12-31 | 2022-02-01 | 吉林大学 | Design method of bionic porous gradient artificial hip joint substrate |
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Application publication date: 20150617 |