CN107252369A - 一种一体式髋臼假体及其制备方法 - Google Patents

一种一体式髋臼假体及其制备方法 Download PDF

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CN107252369A
CN107252369A CN201710109636.3A CN201710109636A CN107252369A CN 107252369 A CN107252369 A CN 107252369A CN 201710109636 A CN201710109636 A CN 201710109636A CN 107252369 A CN107252369 A CN 107252369A
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outer cup
acetabular component
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cup liner
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吴栋
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2/32Joints for the hip
    • A61F2/34Acetabular cups
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2/3094Designing or manufacturing processes
    • A61F2/30942Designing or manufacturing processes for designing or making customized prostheses, e.g. using templates, CT or NMR scans, finite-element analysis or CAD-CAM techniques
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2/3094Designing or manufacturing processes
    • A61F2002/30985Designing or manufacturing processes using three dimensional printing [3DP]
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2310/00Prostheses classified in A61F2/28 or A61F2/30 - A61F2/44 being constructed from or coated with a particular material
    • A61F2310/00005The prosthesis being constructed from a particular material
    • A61F2310/00011Metals or alloys
    • A61F2310/00023Titanium or titanium-based alloys, e.g. Ti-Ni alloys
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2310/00Prostheses classified in A61F2/28 or A61F2/30 - A61F2/44 being constructed from or coated with a particular material
    • A61F2310/00005The prosthesis being constructed from a particular material
    • A61F2310/00011Metals or alloys
    • A61F2310/00029Cobalt-based alloys, e.g. Co-Cr alloys or Vitallium

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  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Vascular Medicine (AREA)
  • Animal Behavior & Ethology (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Cardiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Transplantation (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Manufacturing & Machinery (AREA)
  • Prostheses (AREA)

Abstract

本发明公开了一种一体式髋臼假体的制备方法,包括:由金属外杯和外杯内衬组成,先采用各种加工方法制备外杯内衬,再在外杯内衬本体上采用增材制造技术直接构筑金属外杯。一次成型一体式髋臼假体,使两者之间精密结合,微动减少,从而降低磨损,减少机加工工序,有利于降低成本。

Description

一种一体式髋臼假体及其制备方法
技术领域
本发明涉及医疗器械技术领域,尤其涉及一种骨科植入物一体式髋臼假体及其制备方法。
背景技术
由疾病和创伤造成的人工关节疾病是临床上的常见病,也是骨科治疗的世界性难题之一,严重地影响着患者的生活质量。金属外杯和外杯内衬作为髋臼假体是目前临床应用较为普遍的骨科用材料。髋臼假体在骨科治疗中的广泛应用,显著改善了过去临床无法解决的问题并且植入成功率也已达到了相当满意的效果。目前的金属外杯与外杯内衬独立加工,独立包装,需通过手术操作进行两者的配合,植入人体后,金属外杯和外杯内衬之间的界面会产生微动,从而产生磨屑,导致假体植入失败,并且加工成本较高。而我们在外杯内衬本体上通过增材制造技术直接构筑金属外杯,形成一体式的髋臼假体,金属外杯和外杯内衬之间精密结合,微动减少,从而降低磨损,同时机加工工序的减少进一步节约了生产成本。
发明内容
本发明所要解决的技术问题是克服上述现有技术的缺陷,我们采用增材制造技术在外杯内衬上直接构筑金属外杯,有利于金属外杯与外杯内衬的精密配合,同时减少了加工工序,节省了成本。
本发明所要解决的技术问题通过以下技术方案予以实现:
一种一体式髋臼假体的制备方法,包括:由金属外杯和外杯内衬组成,先采用各种加工方法制备外杯内衬,再在外杯内衬本体上采用增材制造技术直接构筑金属外杯。
进一步地,所述增材制造技术为3D打印。
进一步地,所述金属外杯通过生物相容性的金属材料3D打印制成。
进一步地,外杯内衬所用材料为高分子材料。
本发明具有如下有益效果:
(1)本发明一次成型一体式髋臼假体,直接在外杯内衬上采用增材制造技术构筑金属外杯,使两者之间精密结合,微动减少,从而降低磨损,减少机加工工序,有利于降低成本。
(2)工序步骤简单、可控性强、操作简便。
附图说明
图1为本发明的正视图。
图2为本发明的剖面图。
具体实施方式
下面结合实施例对本发明进行详细的说明,实施例仅是本发明的优选实施方式,不是对本发明的限定。
本发明的一体式髋臼假体的制备方法中,先采用机加工方法加工出外杯内衬,再通过增材制造技术在外杯内衬本体上构筑金属外杯。
所述增材制造技术优选但不限定为3D打印。
所述金属外杯优选但不限定为通过生物相容性的金属材料3d打印制成,其中生物相容性的金属材料优选但不限定为钛合金、钴铬合金,其中钛合金包括TC4,Ti-8Fe-8Ta-4Zr,Ti-8Fe-8Ta-4Zr相较于传统的钛合金,大大降低了弹性模量,可以获得在机械性质和生物相容性方面的优异结果。
所述外杯内衬优选但不限定为通过生物相容性的高分子材料机加工制成,其中生物相容性的高分子材料优选但不限定为超高分子量聚乙烯、高交联超高分子量聚乙烯等材料。
实施例1
一种一体式髋臼假体,其制备方法包括:采用超高分子量聚乙烯材料,通过机加工方式制造外杯内衬,再采用钛合金,通过3d打印的方法在外杯内衬本体上直接构筑金属外杯。
对比例1
一种髋臼假体,分别包含金属外杯和外杯内衬,其制备方法为:采用钛合金材料,通过锻造方式制造金属外杯;采用超高分子量聚乙烯材料,通过机加工方法制造外杯内衬,二者为独立部件。
检测项目:
A.磨损试验
依据ISO 14242-1及ISO 14242-2对一体式髋臼假体与普通独立的髋臼假体进行磨损试验,通过测试超高分子量聚乙烯的磨损量来判定两者的磨损性能。
B.成本核算
对产品生产全流程中的各项成本如机加工成本、清洗成本、检测成本、人工成本等进行核算,对比一体式髋臼假体与普通独立的髋臼假体在成本方面的异同。
测试结果:
A:实施例的一体式髋臼假体的磨损量小于对比例的普通独立的髋臼假体。
B:成本核算显示实施例的一体式髋臼假体的成本较低,总体成本优势明显。
以上所述实施例仅表达了本发明的实施方式,其描述较为具体和详细,但并不能因此而理解为对本发明专利范围的限制,但凡采用等同替换或等效变换的形式所获得的技术方案,均应落在本发明的保护范围之内。

Claims (4)

1.一种一体式髋臼假体的制备方法,其特征在于,包括:由金属外杯和外杯内衬组成,先采用各种加工方法制备外杯内衬,再在外杯内衬本体上采用增材制造技术直接构筑金属外杯。
2.如权利要求1所述的一体式髋臼假体的制备方法,其特征在于,所述金属外杯通过生物相容性的金属材料增材制造制成。
3.如权利要求1所述的一体式髋臼假体的制备方法,其特征在于,所述外杯内衬通过生物相容性的高分子材料加工制成。
4.一种一体式髋臼假体,采用权利要求1-3任一项所述的制备方法制成。
CN201710109636.3A 2017-02-27 2017-02-27 一种一体式髋臼假体及其制备方法 Pending CN107252369A (zh)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107252367A (zh) * 2017-02-28 2017-10-17 吴栋 一种一体式双动头及其制备方法
CN107638233A (zh) * 2017-10-27 2018-01-30 北京大学国际医院 一种3d打印股骨头的防脱位髋关节假体及其制造方法

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2642265Y (zh) * 2003-10-14 2004-09-22 吴栋 人工髋关节双动股骨头
CN2657616Y (zh) * 2003-11-24 2004-11-24 吴栋 人工髋关节金属髋臼外杯
CN2659379Y (zh) * 2003-11-24 2004-12-01 吴栋 人工髋关节金属髋臼
CN2855368Y (zh) * 2005-12-15 2007-01-10 蒋谊康 人工髋关节双动头
CN201939535U (zh) * 2010-10-08 2011-08-24 李亚东 多层壳芯复合结构件组成的人工髋关节
CN202821719U (zh) * 2012-07-10 2013-03-27 北京爱康宜诚医疗器材股份有限公司 解剖式双动全髋人工关节
US20130268083A1 (en) * 2009-12-21 2013-10-10 Derek James Wallace McMinn Cup with crosslinked polymer layer cable ties
CN105030381A (zh) * 2015-07-03 2015-11-11 江苏奥康尼医疗科技发展有限公司 一种人工髋关节臼杯
CN105287064A (zh) * 2015-10-21 2016-02-03 青岛尤尼科技有限公司 一种假肢接受腔及其3d打印制备方法
CN205163325U (zh) * 2015-10-21 2016-04-20 青岛尤尼科技有限公司 一种带仿生关节的小腿假肢

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2642265Y (zh) * 2003-10-14 2004-09-22 吴栋 人工髋关节双动股骨头
CN2657616Y (zh) * 2003-11-24 2004-11-24 吴栋 人工髋关节金属髋臼外杯
CN2659379Y (zh) * 2003-11-24 2004-12-01 吴栋 人工髋关节金属髋臼
CN2855368Y (zh) * 2005-12-15 2007-01-10 蒋谊康 人工髋关节双动头
US20130268083A1 (en) * 2009-12-21 2013-10-10 Derek James Wallace McMinn Cup with crosslinked polymer layer cable ties
CN201939535U (zh) * 2010-10-08 2011-08-24 李亚东 多层壳芯复合结构件组成的人工髋关节
CN202821719U (zh) * 2012-07-10 2013-03-27 北京爱康宜诚医疗器材股份有限公司 解剖式双动全髋人工关节
CN105030381A (zh) * 2015-07-03 2015-11-11 江苏奥康尼医疗科技发展有限公司 一种人工髋关节臼杯
CN105287064A (zh) * 2015-10-21 2016-02-03 青岛尤尼科技有限公司 一种假肢接受腔及其3d打印制备方法
CN205163325U (zh) * 2015-10-21 2016-04-20 青岛尤尼科技有限公司 一种带仿生关节的小腿假肢

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107252367A (zh) * 2017-02-28 2017-10-17 吴栋 一种一体式双动头及其制备方法
CN107638233A (zh) * 2017-10-27 2018-01-30 北京大学国际医院 一种3d打印股骨头的防脱位髋关节假体及其制造方法

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Application publication date: 20171017