JP5168682B2 - 人工関節固定用ステム - Google Patents
人工関節固定用ステム Download PDFInfo
- Publication number
- JP5168682B2 JP5168682B2 JP2006352232A JP2006352232A JP5168682B2 JP 5168682 B2 JP5168682 B2 JP 5168682B2 JP 2006352232 A JP2006352232 A JP 2006352232A JP 2006352232 A JP2006352232 A JP 2006352232A JP 5168682 B2 JP5168682 B2 JP 5168682B2
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- JP
- Japan
- Prior art keywords
- bone
- cement
- stem
- layer
- medullary cavity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS 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
- A61F2/00—Filters 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
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/32—Joints for the hip
- A61F2/36—Femoral heads ; Femoral endoprostheses
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS 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
- A61F2/00—Filters 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
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2002/30001—Additional 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)
Description
本実施例に示す人工関節固定用ステム3は、上端に人工関節の骨頭部8が取り付けられ、大腿骨2の髄腔に挿し込まれる形状の髄腔挿入部4と人工の骨頭部8を装着する骨頭装着部5からなり、骨盤1にネジ固定された骨臼カップ9に人工の骨頭部8が嵌まり整復される。
また、骨セメント層の厚みとしては、2mmから5mmが臨床的に良い結果をもたらすことよりステム側にその深さ(β)は、1〜3mmの骨セメント固定層を設け、更にステム最外周と髄腔表面との間に2〜3mmのセメント層をラスプ(髄腔を拡大)により形成し、合わせて2mm以上のセメント固定層を設けることで最良のセメント固定が可能となった。セメント層の幅(α)については、セメントレスステムのポーラス加工した骨誘導部分7aは一般に近位3分1、約5cmであるため、その5cm幅を維持し、且つ、セメント固定層6を近位最上端に具備するため、セメント固定層の幅(α)をセメントレスステムの骨性固定の効果を減弱させない幅として、7mmから20mmとした。
2:大腿骨
3:ステム
4:髄腔挿入部
5:骨頭装着部
6:セメント固定層
7:骨性固定層
7a:骨誘導部分(Bone ingrowth)
7b:骨付着部分(Bone ongrowth)
8:骨頭部
9:骨臼カップ
10:沈込み予防カラー
α:ステムのセメント固定層の幅
β:ステムのセメント固定層の深さ
Claims (1)
- 髄腔に押し込まれる髄腔挿入部の近位部の一部を骨セメントで固定し、セメント固定層以下の骨性固定層である髄腔挿入部の骨新生を誘導する部分と、それ以下はその表面に骨が付着する部分をもつ構造とし、固定した以下の部分をセメント非使用の骨誘導材で作成し、髄腔挿入部の上端全外周部に幅が7mmから20mm、深さが1mmから3mmの骨セメント充填層を被着し、沈込み予防カラーを前記セメント層上端全外周部に備えて前記髄腔に固定とすることを特徴とする人工関節固定用ステム。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006352232A JP5168682B2 (ja) | 2006-12-27 | 2006-12-27 | 人工関節固定用ステム |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006352232A JP5168682B2 (ja) | 2006-12-27 | 2006-12-27 | 人工関節固定用ステム |
Publications (3)
Publication Number | Publication Date |
---|---|
JP2008161312A JP2008161312A (ja) | 2008-07-17 |
JP2008161312A5 JP2008161312A5 (ja) | 2010-02-12 |
JP5168682B2 true JP5168682B2 (ja) | 2013-03-21 |
Family
ID=39691561
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2006352232A Active JP5168682B2 (ja) | 2006-12-27 | 2006-12-27 | 人工関節固定用ステム |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP5168682B2 (ja) |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05277140A (ja) * | 1992-04-02 | 1993-10-26 | Depiyuu Japan:Kk | 人工股関節部材 |
JP3372561B2 (ja) * | 1992-04-28 | 2003-02-04 | 京セラ株式会社 | 人工股関節 |
US5954771A (en) * | 1993-02-16 | 1999-09-21 | Wright Medical Technology, Inc. | Dual fixation prosthesis |
JP3363212B2 (ja) * | 1993-08-30 | 2003-01-08 | 京セラ株式会社 | 人工股関節 |
JP3495161B2 (ja) * | 1995-11-30 | 2004-02-09 | 京セラ株式会社 | 人工膝関節の大腿骨コンポーネント |
JP2001037792A (ja) * | 1999-07-30 | 2001-02-13 | Yasushi Kumazawa | 人工股関節 |
-
2006
- 2006-12-27 JP JP2006352232A patent/JP5168682B2/ja active Active
Also Published As
Publication number | Publication date |
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JP2008161312A (ja) | 2008-07-17 |
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