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 PDF

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Publication number
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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China
Prior art keywords
femoral stem
hip joint
artificial hip
bone
improved artificial
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CN201510445225.2A
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Chinese (zh)
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不公告发明人
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深圳市义和平有限公司
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Priority to CN201510445225.2A priority Critical patent/CN105105880A/en
Publication of CN105105880A publication Critical patent/CN105105880A/en

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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

一种改进的带粗糙薄层的人工髋关节股骨柄及其制备方法 An improved sheet with rough artificial hip joint stem and preparation method

技术领域 FIELD

[0001] 本发明涉及医学骨关节领域的人工关节,特别是一种改进的人工髋关节柄。 [0001] The present invention relates to the field of medical artificial joint bone and joint, in particular to an improved artificial hip stem.

背景技术 Background technique

[0002] 人工髋关节柄是人体植入物,用于人体髋关节病变需要进行骨科置换手术时植入人体股骨髓腔的替换物,使病人在一定程度上恢复髋关节的生理功能,缓解疼痛,改善运动与提高生活质量。 [0002] artificial hip implants handle the body for human hip joint disease need to be implanted in the body when the femoral canal orthopedic replacement surgery alternatives, restore physiological function of the patient's hip to a certain extent, ease the pain to improve the movement and quality of life.

[0003] 在已有技术中,可通过铸造或锻造制成人工髋关节股骨柄,之后经喷砂在柄体(I)形成粗糙薄层,或者将羟基磷灰石或钛通过热喷涂在柄体(I)形成粗糙薄层;也可通过增材制造一体制成人工髋关节股骨柄及表面粗糙薄层。 [0003] In the prior art, can be made by casting or forging an artificial hip stem, after roughening by sandblasting a thin layer is formed in the handle body (the I), or titanium or hydroxyapatite by thermal spraying the shank (I) is a thin layer forming a rough; may be integrally formed artificial hip stem by a thin layer of the surface roughness and additive manufacturing. 但通过铸造和锻造形成的人工髋关节股骨柄,其表面的粗糙度很难定制,不利于骨依附或骨长入,使用一定时间后,有松动的可能,增加了置换术的失败率,加重患者的生理负担。 But artificial hip stem formed by casting and forging, its surface roughness difficult to customize, is not conducive to bone ingrowth or bone attached, after a certain time, there may be loose, increasing the failure rate of replacement, increased physiological burden on the patient. 通过增材制造一体制成的人工髋关节股骨柄因制造技术成熟度不够,不能保证股骨柄的力学性能和机械强度,导致植入物内有断裂和二次手术的风险。 Artificial hip stem integrally formed by additive manufacturing because of manufacturing technology is mature enough, we can not guarantee the mechanical properties and the mechanical strength of the femoral stem, and the risk of fracture in the secondary implant surgery.

发明内容 SUMMARY

[0004] 本发明的目的在于提供一种改进的人工髋关节柄,在保证力学性能和机械强度的前提下,能为股骨柄定制最适合骨依附和骨长入的表面粗糙度,克服已有人工髋关节股骨柄植入后易松动和可能断裂的缺陷。 [0004] The object of the present invention to provide an improved artificial hip stem in ensuring the mechanical strength and the mechanical properties of the premise, can be the most suitable for bone ingrowth and bone attachment surface roughness of custom femoral stem to overcome the existing after total hip femoral implant loosening and handle may break defects.

[0005] 本发明的任务是以这样的方式实现的: [0005] The object of the invention is achieved in such a manner that:

一种人工髋关节股骨柄,先由铸造或锻造制成,再通过增材制造在柄体(I)形成粗糙医用金属薄层(2 ),并为该粗糙薄层定制最适宜的表面粗糙度。 A prosthetic hip stem, first by casting or forging is made, and then manufactured by forming a rough medical Additive metal thin layer (2) in the handle body (the I), and the most suitable surface roughness for rough sheet Custom .

[0006] 可以根据患者的骨质差异和生物力学要求,为患者定制粗糙薄层的覆盖率和表面粗糙度。 [0006] and the difference may bone biomechanical requirements of the patient, the rough sheet is customized patient coverage and surface roughness.

[0007] 粗糙薄层(2)分布于柄体(I)与患者骨质接触的相应表面,可覆盖1%〜99%的表面; [0007] roughened thin layer (2) located in the respective surface of the handle (I) is in contact with the patient's bone, the surface may be 1% ~99% coverage;

粗糙薄层(2)的平均表面粗糙度Ra范围为3.2~1250。 Rough thin layer (2) has an average surface roughness Ra in the range of 3.2 to 1250.

[0008] 本发明的优点是:本发明通过铸造或锻造制成人工髋关节股骨柄,保证了股骨柄的强度和力学性能。 [0008] The advantage of the present invention are: the present invention is made by casting or forging an artificial hip stem, to ensure the strength and the mechanical properties of the femoral stem. 再通过增材制造为粗糙薄层(2)定制最适宜的表面粗糙度,能最大化地有利于骨依附和骨长入。 Then by additive manufacturing rough sheet (2) custom optimum surface roughness to maximize bone to facilitate bone ingrowth and attachment.

附图说明 BRIEF DESCRIPTION

[0009]图1为本发明实施例结构示意图(其中粗糙薄层分布于柄体的部分表面)。 [0009] Fig 1 a schematic view of the structure (some of which the surface roughness of the thin layer located in the handle body) Examples of the present invention.

具体实施方式 Detailed ways

[0010] 如图1所示,本发明提供一种人工髋关节股骨柄,通过铸造或锻造制成。 [0010] As shown in FIG. 1, the present invention provides a prosthetic hip stem, is made by casting or forging. 然后在计算机中建立具有最适宜表面粗糙度(例如Ra=400)的粗糙薄层模型,再通过激光或高能电子束熔融医用金属粉末,在该人工髋关节股骨柄上得到所需要的粗糙薄层。 Then a thin layer to establish a rough model having an optimum surface roughness (e.g. Ra = 400) in a computer, and then by a laser or high-energy electron beam melting metal powder medical, to give the desired roughness on the thin layer of the artificial hip joint stem .

Claims (1)

1.一种改进的带粗糙薄层的人工髋关节股骨柄,其特征是通过铸造或锻造制成,再通过增材制造在柄体(I)上与患者骨质接触的相应表面形成粗糙的医用金属薄层(2);该粗糙医用金属薄层(2)的覆盖范围可以定制,分布于柄体(I)与患者骨质接触的相应表面,可覆盖1%〜99%的表面;该粗糙医用金属薄层(2)的表面粗糙度可以定制,平均表面粗糙度Ra范围为3.2~1250。 Artificial hip joint stem with rough An improved thin layer, characterized in that made by casting or forging, and then formed by additive manufacturing with a corresponding contact surface of the patient bone on the handle (I) is roughened medical metal thin layer (2); the medical roughened metal thin layer (2) coverage can be customized, distributed to the respective surface of the handle (I) is contacted with the patient's bone, the surface may be 1% ~99% coverage; the medical thin metal layer surface roughness (2) can be customized roughness, average surface roughness Ra in the range of 3.2 to 1250.
CN201510445225.2A 2015-07-27 2015-07-27 Improved artificial hip joint femoral stem with rough film and preparation method thereof CN105105880A (en)

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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

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Citations (6)

* Cited by examiner, † Cited by third party
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 宁 徐 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

Patent Citations (6)

* Cited by examiner, † Cited by third party
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 宁 徐 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

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