CN105105880A - Improved artificial hip joint femoral stem with rough film and preparation method thereof - Google Patents
Improved artificial hip joint femoral stem with rough film and preparation method thereof Download PDFInfo
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- CN105105880A CN105105880A CN201510445225.2A CN201510445225A CN105105880A CN 105105880 A CN105105880 A CN 105105880A CN 201510445225 A CN201510445225 A CN 201510445225A CN 105105880 A CN105105880 A CN 105105880A
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- hip joint
- artificial hip
- femoral stem
- thin layer
- improved artificial
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Abstract
The invention relates to an improved artificial hip joint femoral stem which is characterized in that the improved artificial hip joint femoral stem is cast or forged, and then a rough medical metal film is formed on the corresponding surface, being in contact with a bone of a patient, of the femoral stem through additive manufacturing. The strength and mechanical properties of the femoral stem are guaranteed by casting and forging, and then the optimal roughness is customized for the rough film through the additive manufacturing, so that bone attachment or bone ingrowth can be facilitated to the maximum. The improved artificial hip joint femoral stem is suitable for a bone joint replacement surgery for human hip joint lesions.
Description
Technical field
The present invention relates to the artificial joint of medical science osteoarticular field, the artificial hip joint stem of particularly a kind of improvement.
Background technology
Artificial hip joint stem is body implant, the alternative of implant into body femoral bone cavitas medullaris when needing to carry out orthopaedics replacement operation for human hip pathological changes, make patient recover the physiological function of hip joint to a certain extent, alleviating pain, improve motion and improve the quality of living.
In prior art, make artificial hip joint femoral shaft by casting or forging, after form coarse thin layer through sandblasting at handle body (1), or hydroxyapatite or titanium are formed coarse thin layer by thermal spraying at handle body (1); Also artificial hip joint femoral shaft and rough surface thin layer is made into integration by increasing material manufacture.But by casting and forge the artificial hip joint femoral shaft of formation, the roughness on its surface is difficult to customization, is unfavorable for that bone depends on or Bone Ingrowth, after using certain hour, has loosening possibility, adds the mortality of replacement, the physiological load of making patients.The artificial hip joint femoral shaft be made into integration by the manufacture of increasing material is inadequate because of manufacturing technology Maturity, can not ensure mechanical property and the mechanical strength of femoral stem, causes the risk having fracture and second operation in implant.
Summary of the invention
The object of the present invention is to provide a kind of artificial hip joint stem of improvement, under the prerequisite ensureing mechanical property and mechanical strength, the surface roughness with Bone Ingrowth can be depended on for the most applicable bone of femoral stem customization, overcome the defect easily loosening and may rupture after existing artificial hip joint femoral shaft is implanted.
Task of the present invention realizes by this way:
A kind of artificial hip joint femoral shaft, first makes by casting or forging, then is manufactured on handle body (1) by increasing material and forms coarse medical metal thin layer (2), and customizes optimum surface roughness for this coarse thin layer.
Can according to the sclerotin difference of patient and biomechanics requirement, for patient customizes coverage rate and the surface roughness of coarse thin layer.
Coarse thin layer (2) is distributed in the respective surfaces that handle body (1) contacts with patient's sclerotin, can cover the surface of 1% ~ 99%;
The average surface roughness Ra scope of coarse thin layer (2) is 3.2 ~ 1250.
Advantage of the present invention is: the present invention makes artificial hip joint femoral shaft by casting or forging, and ensure that intensity and the mechanical property of femoral stem.Be fabricated to coarse thin layer (2) by increasing material again and customize optimum surface roughness, bone can be conducive to substantially and depend on and Bone Ingrowth.
Accompanying drawing explanation
Fig. 1 is embodiment of the present invention structural representation (wherein coarse thin layer is distributed in the part surface of handle body).
Detailed description of the invention
As shown in Figure 1, the invention provides a kind of artificial hip joint femoral shaft, make by casting or forging.Then set up the coarse thin film model with optimum surface roughness (such as Ra=400) in a computer, then by laser or high-power electron beam melting medical metal powder, this artificial hip joint femoral shaft obtains required coarse thin layer.
Claims (1)
1. the artificial hip joint femoral shaft of the coarse thin layer of band improved, is characterized in that making by casting or forging, then is manufactured on handle body (1) and goes up the respective surfaces contacted with patient's sclerotin by increasing material and form coarse medical metal thin layer (2); The coverage of this coarse medical metal thin layer (2) can customize, and is distributed in the respective surfaces that handle body (1) contacts with patient's sclerotin, can covers the surface of 1% ~ 99%;
shouldthe surface roughness of coarse medical metal thin layer (2) can customize, and average surface roughness Ra scope is 3.2 ~ 1250.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN201510445225.2A CN105105880A (en) | 2015-07-27 | 2015-07-27 | Improved artificial hip joint femoral stem with rough film and preparation method thereof |
Applications Claiming Priority (1)
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CN201510445225.2A CN105105880A (en) | 2015-07-27 | 2015-07-27 | Improved artificial hip joint femoral stem with rough film and preparation method thereof |
Publications (1)
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CN105105880A true CN105105880A (en) | 2015-12-02 |
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CN201510445225.2A Pending CN105105880A (en) | 2015-07-27 | 2015-07-27 | Improved artificial hip joint femoral stem with rough film and preparation method thereof |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109688979A (en) * | 2016-08-03 | 2019-04-26 | 泰坦脊椎公司 | Enhance the implant surface of self-bone grafting |
Citations (6)
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---|---|---|---|---|
CN2657617Y (en) * | 2003-11-24 | 2004-11-24 | 吴栋 | Artificial hip joint femur handle |
US20060058888A1 (en) * | 2004-09-16 | 2006-03-16 | Gordon Hunter | Method of surface oxidizing zirconium and zirconium alloys and resulting product |
CN201154008Y (en) * | 2008-01-22 | 2008-11-26 | 徐宁 | Hip-joint prosthesis with titanium coating |
CN101862231A (en) * | 2010-05-12 | 2010-10-20 | 中国人民解放军第四军医大学 | Method for preparing prosthesis with tantalum coating |
US20130218288A1 (en) * | 2012-02-09 | 2013-08-22 | Mx Orthopedics, Corp. | Dynamic porous coating for orthopedic implant |
CN103328016A (en) * | 2011-01-04 | 2013-09-25 | 利润泰克株式会社 | Implant for in-vivo insertion which is formed with a porous coating layer thereon |
-
2015
- 2015-07-27 CN CN201510445225.2A patent/CN105105880A/en active Pending
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN2657617Y (en) * | 2003-11-24 | 2004-11-24 | 吴栋 | Artificial hip joint femur handle |
US20060058888A1 (en) * | 2004-09-16 | 2006-03-16 | Gordon Hunter | Method of surface oxidizing zirconium and zirconium alloys and resulting product |
CN201154008Y (en) * | 2008-01-22 | 2008-11-26 | 徐宁 | Hip-joint prosthesis with titanium coating |
CN101862231A (en) * | 2010-05-12 | 2010-10-20 | 中国人民解放军第四军医大学 | Method for preparing prosthesis with tantalum coating |
CN103328016A (en) * | 2011-01-04 | 2013-09-25 | 利润泰克株式会社 | Implant for in-vivo insertion which is formed with a porous coating layer thereon |
US20130218288A1 (en) * | 2012-02-09 | 2013-08-22 | Mx Orthopedics, Corp. | Dynamic porous coating for orthopedic implant |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109688979A (en) * | 2016-08-03 | 2019-04-26 | 泰坦脊椎公司 | Enhance the implant surface of self-bone grafting |
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Application publication date: 20151202 |
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WD01 | Invention patent application deemed withdrawn after publication |