CN2528411Y - 股骨头表面置换假体 - Google Patents

股骨头表面置换假体 Download PDF

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Publication number
CN2528411Y
CN2528411Y CN 02218621 CN02218621U CN2528411Y CN 2528411 Y CN2528411 Y CN 2528411Y CN 02218621 CN02218621 CN 02218621 CN 02218621 U CN02218621 U CN 02218621U CN 2528411 Y CN2528411 Y CN 2528411Y
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China
Prior art keywords
pole
utility
single glass
femoral head
model
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Expired - Fee Related
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CN 02218621
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English (en)
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孙俊英
王禹基
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SUN JUNYING (CN)
SUN JUNYING CN
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SUN JUNYING (CN)
SUN JUNYING CN
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Priority to CN 02218621 priority Critical patent/CN2528411Y/zh
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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
    • A61F2/36Femoral heads ; Femoral endoprostheses
    • 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
    • A61F2002/30001Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof

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

Abstract

一种股骨头表面置换假体,其特征在于:它包括外表面为部分球面的单杯[1]、与所述的单杯[1]的内壁相固定连接的中心杆[5],所述的中心杆[5]的一端部与所述的单杯[1]的内壁中央部相连接,并且所述的中心杆[5]的轴心线通过单杯[1]的外表球面的球心。中心杆可插入骨头内,使得本实用新型与骨头的连接更牢固,中心杆还具有导向的作用,使得单杯的安装位置更准确。本实用新型适用于股骨头无菌坏死、大骨节病骨性关节炎等股骨头的置换。

Description

股骨头表面置换假体
技术领域
本实用新型涉及一种医院骨科使用的股骨头表面置换假体。
背景技术
中国专利ZL93235674.5公开了一种碳质股骨头表面置换假体的实用新型专利,它是一种碳质单杯,内壁和外壁分别为偏心的球面,外表面为球形,这种结构的单杯与骨头端部的固定不牢固,特别是单杯的内壁为球面形,使得单杯的内壁与骨头之间有较大的间隙,只能通过骨水泥进行充填。
发明内容
本实用新型的目的在于提供一种能与骨头牢固地连接的股骨头表面置换假体。
本实用新型的技术方案是:一种股骨头表面置换假体,它包括外表面为部分球面的单杯、与所述的单杯的内壁相固定连接的中心杆,所述的中心杆的一端部与所述的单杯的内壁中央部相连接,并且所述的中心杆的轴心线通过单杯的外表球面的球心。
本实用新型与现有技术相比具有下列优点:
中心杆可插入骨头内,使得本实用新型与骨头的连接更牢固,中心杆还具有导向的作用,使得单杯的安装位置更准确。
附图说明
附图1为本实用新型的结构主剖视图;
附图2为本实用新型的立体图;
附图3为本实用新型固定于骨头上时的使用状态图;其中:
[1]单杯;[2]、环形凹槽;[3]、圆柱形内壁;[4]、中心杆的凹槽;[5]、中心杆;[6]、球形内壁;[7]、骨头;
具体实施方式
参见附图1至附图3,一种股骨头表面置换假体,它包括外表面为部分球面的单杯[1]、与所述的单杯[1]的内壁相固定连接的中心杆[5],所述的中心杆[5]的一端部与所述的单杯[1]的内壁中央部相连接,并且所述的中心杆[5]的轴心线通过单杯[1]的外表球面的球心。
所述的单杯[1]的内壁中,口部以内有一段圆柱形内壁[3],该圆柱形内壁套在骨头上,使得单杯[1]与骨头的连接更牢固,禁止单杯[1]相对于骨头[7]多方向转动。
所述的圆柱形内壁[3]上设有至少一圈环形凹槽[2],使得骨头[7]与单杯[1]的内壁相连接后,间隙处所充填的骨水泥充满环形凹槽[2]内,进一步使单杯[1]与骨头[7]的表面相固定。
所述的中心杆[5]的外表面设有至少一圈中心杆的凹槽[4],可以使中心杆[5]与骨头[7]更好地相固定,禁止中心杆[5]轴向移动。

Claims (4)

1、一种股骨头表面置换假体,其特征在于:它包括外表面为部分球面的单杯[1]、与所述的单杯[1]的内壁相固定连接的中心杆[5],所述的中心杆[5]的一端部与所述的单杯[1]的内壁中央部相连接,并且所述的中心杆[5]的轴心线通过单杯[1]的外表球面的球心。
2、根据权利要求1所述的股骨头表面置换假体,其特征在于:所述的单杯[1]的内壁中,口部以内有一段圆柱形内壁[3]。
3、根据权利要求2所述的股骨头表面置换假体,其特征在于:所述的圆柱形内壁[3]上设有至少一圈环形凹槽[2]。
4、根据权利要求1所述的股骨头表面置换假体,其特征在于:所述的中心杆[5]的外表面设有至少一圈中心杆的凹槽[4]。
CN 02218621 2002-01-25 2002-01-25 股骨头表面置换假体 Expired - Fee Related CN2528411Y (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 02218621 CN2528411Y (zh) 2002-01-25 2002-01-25 股骨头表面置换假体

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Application Number Priority Date Filing Date Title
CN 02218621 CN2528411Y (zh) 2002-01-25 2002-01-25 股骨头表面置换假体

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102188298A (zh) * 2011-07-13 2011-09-21 张前法 一种生物型股骨头表面置换假体
CN106420115A (zh) * 2007-10-22 2017-02-22 T.J.史密夫及内修有限公司 关节假体
CN111616839A (zh) * 2020-06-01 2020-09-04 北京爱康宜诚医疗器材有限公司 半髋关节的置换假体以及手术工具

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106420115A (zh) * 2007-10-22 2017-02-22 T.J.史密夫及内修有限公司 关节假体
CN102188298A (zh) * 2011-07-13 2011-09-21 张前法 一种生物型股骨头表面置换假体
CN111616839A (zh) * 2020-06-01 2020-09-04 北京爱康宜诚医疗器材有限公司 半髋关节的置换假体以及手术工具

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