CN105105881A - Improved artificial knee joint femoral prosthesis with porous film and preparation method thereof - Google Patents

Improved artificial knee joint femoral prosthesis with porous film and preparation method thereof Download PDF

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Publication number
CN105105881A
CN105105881A CN 201510445229 CN201510445229A CN105105881A CN 105105881 A CN105105881 A CN 105105881A CN 201510445229 CN201510445229 CN 201510445229 CN 201510445229 A CN201510445229 A CN 201510445229A CN 105105881 A CN105105881 A CN 105105881A
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Prior art keywords
femoral prosthesis
knee joint
artificial knee
porous
improved artificial
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CN 201510445229
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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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Abstract

The invention relates to an improved artificial knee joint femoral prosthesis which is characterized in that the improved artificial knee joint femoral prosthesis is cast or forged, and then a porous medical metal film is formed on the corresponding surface, which makes contact with a bone of a patient, of the femoral prosthesis through additive manufacturing. The strength and mechanical properties of the femoral prosthesis are guaranteed by casting and forging, and then the optimal porosity is customized for the porous film through the additive manufacturing, so that bone attachment or bone ingrowth can be facilitated to the maximum. The improved artificial knee joint femoral prosthesis is suitable for a bone joint replacement surgery for human knee joint lesions.

Description

一种改进的带多孔薄层的人工膝关节股骨假体及其制备方 An improved artificial knee joint femoral prosthesis and the porous sheet with preparing

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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膝关节股骨假体。 [0001] The present invention relates to the field of medical artificial joint bones and joints, particularly to an improved artificial knee joint femoral prosthesis.

背景技术 Background technique

[0002] 人工膝关节股骨假体是人体植入物,用于人体膝关节病变需要进行骨科置换手术时植入在人体股骨端的替换物,使病人在一定程度上恢复膝关节的生理功能,缓解疼痛,改善运动与提高生活质量。 [0002] artificial knee femoral component is human implants for the human knee joint lesions need to be implanted in a human femur end when orthopedic replacement surgery alternatives, restore physiological function of the patient's knee to a certain extent, ease pain, improve movement and enhance the quality of life.

[0003] 在已有技术中,可通过铸造或锻造制成人工膝关节股骨假体,之后经喷砂在股骨假体表面形成多孔薄层,或者将羟基磷灰石或钛通过热喷涂在股骨假体表面形成多孔薄层;也可通过增材制造一体制成人工膝关节股骨假体及表面多孔薄层。 [0003] In the prior art, can be made by casting or forging an artificial knee joint femoral prosthesis, after forming a thin layer on a porous surface of the femoral prosthesis by sandblasting, or titanium or hydroxyapatite by thermal spraying femur The prosthesis surface porous sheet; may be integrally formed and the artificial knee joint femoral prosthesis surface of the porous sheet by additive manufacturing. 但通过铸造和锻造形成的人工膝关节股骨假体,其表面的孔隙率很难定制,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 knee femoral prosthesis formed by casting and forging, it's difficult to customize the porosity of the surface, is not conducive to bone ingrowth or bone attached, after a certain time, there may be loose, increasing the failure rate of replacement surgery, increase the physiological burden of patients. 通过增材制造一体制成的人工膝关节股骨假体因制造技术成熟度不够,不能保证股骨假体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 knee joint femoral prosthesis is 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 prosthesis, the risk of fracture in the second operation and implant.

发明内容 SUMMARY

[0004] 本发明的目的在于提供一种改进的人工膝关节股骨假体,在保证力学性能和机械强度的前提下,能为股骨假体定制最适合骨依附和骨长入的孔隙率,克服已有人工膝关节股骨假体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 knee joint femoral prosthesis in ensuring the mechanical properties and the mechanical strength of the premise, capable of bone porosity most suitable for bone ingrowth and attachment to the femoral prosthesis tailored to overcome existing artificial knee femoral component loosening and possible fracture after implantation 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:

一种人工膝关节股骨假体,先由铸造或锻造制成,再通过增材制造在股骨假体表面形成多孔医用金属薄层(2),并为该多孔薄层定制最适宜的孔隙率。 An artificial knee joint femoral prosthesis, made first by casting or forging, and then by a medical additive manufacturing a porous metal sheet is formed (2) the surface of the femoral prosthesis, and a porous sheet for customized optimum porosity.

[0006] 可以根据患者的骨质差异和生物力学要求,为患者定制多孔薄层的覆盖率和孔隙率。 [0006] and the difference may bone biomechanical requirements of the patient, the patient customized porous sheet coverage and porosity.

[0007] 多孔医用金属薄层(2)分布于股骨假体上与患者骨质接触的相应表面,可覆盖1%〜99%的表面; [0007] Medical porous metal sheet (2) distributed on respective surfaces of a femoral prosthesis bone contact with the patient, the surface may be 1% ~99% coverage;

多孔医用金属薄层(2)的平均孔隙率范围为1%~99%。 Medical porous metal sheet (2) has an average porosity in the range 1% to 99%.

[0008] 本发明的优点是: [0008] The advantage of the present invention are:

本发明通过铸造或锻造制成人工膝关节股骨假体,保证了股骨假体的强度和力学性能。 The present invention is made by casting or forging an artificial knee joint femoral prosthesis, to ensure the strength and the mechanical properties of the femoral prosthesis. 再通过增材制造为多孔医用金属薄层(2)定制最适宜的孔隙率,能最大化地有利于骨依附和骨长入。 And then producing a porous material by increasing the medical sheet metal (2) custom optimum porosity 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(多孔薄层分布于股骨假体的部分表面)。 [0009] FIG. 1 shows a structure of embodiment (distributed in the porous sheet portion of the surface of the femoral prosthesis) of the present invention.

具体实施方式 detailed description

[0010] 如图1所示,本发明提供一种人工膝关节股骨假体,通过铸造或锻造制成。 [0010] As shown in FIG. 1, the present invention provides an artificial knee joint femoral prosthesis, made by casting or forging. 然后在计算机中建立具有最适宜孔隙率(例如40%)的多孔薄层的模型,再通过激光或高能电子束熔融医用金属粉末,在该人工膝关节股骨假体上得到所需要的多孔薄层。 And create a model porous sheet having an optimum porosity (e.g. 40%) in a computer, and then by a laser or high-energy electron beam melting metal powder medical, required to obtain a porous thin layer on the artificial knee joint femoral prosthesis .

Claims (1)

  1. 1.一种改进的带多孔薄层的人工膝关节股骨假体(1),其特征是通过铸造或锻造制成,再通过增材制造在股骨假体与患者骨质接触的相应表面形成多孔医用金属薄层(2);该多孔医用金属薄层(2)的覆盖范围可以定制,分布于股骨假体与患者骨质接触的相应表面,可覆盖1%〜99%的表面;该多孔医用金属薄层(2)的平均孔隙率范围为1%~99%。 An improved porous sheet with an artificial knee joint femoral prosthesis (1), characterized in that made by casting or forging, and then forming a porous material is manufactured by increasing the corresponding surface of the femoral bone prosthesis in contact with the patient medical metal thin layer (2); medical porous metal sheet (2) coverage can be customized, distributed to the respective surfaces of the femoral bone prosthesis contact with the patient, the surface may be 1% ~99% coverage; porous medical metal thin layer (2) has an average porosity in the range 1% to 99%.
CN 201510445229 2015-07-27 2015-07-27 Improved artificial knee joint femoral prosthesis with porous film and preparation method thereof CN105105881A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105853026A (en) * 2016-04-28 2016-08-17 华南理工大学 Personalized femoral prosthesis and manufacturing method

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060058888A1 (en) * 2004-09-16 2006-03-16 Gordon Hunter Method of surface oxidizing zirconium and zirconium alloys and resulting product
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
US20130204384A1 (en) * 2012-02-02 2013-08-08 Biomet Manufacturing Corporation Implant With Patient-Specific Porous Structure
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
CN103480043A (en) * 2013-09-26 2014-01-01 赵德伟 Porous medical tantalum implant material and preparation method thereof
CN204909737U (en) * 2015-07-27 2015-12-30 深圳市义和平有限公司 Modified area thin porous layer's artificial knee joint femoral prosthesis

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060058888A1 (en) * 2004-09-16 2006-03-16 Gordon Hunter Method of surface oxidizing zirconium and zirconium alloys and resulting product
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
US20130204384A1 (en) * 2012-02-02 2013-08-08 Biomet Manufacturing Corporation Implant With Patient-Specific Porous Structure
CN103480043A (en) * 2013-09-26 2014-01-01 赵德伟 Porous medical tantalum implant material and preparation method thereof
CN204909737U (en) * 2015-07-27 2015-12-30 深圳市义和平有限公司 Modified area thin porous layer's artificial knee joint femoral prosthesis

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105853026A (en) * 2016-04-28 2016-08-17 华南理工大学 Personalized femoral prosthesis and manufacturing method

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