JP2003505147A - 脱臼防止両股義足 - Google Patents

脱臼防止両股義足

Info

Publication number
JP2003505147A
JP2003505147A JP2001511853A JP2001511853A JP2003505147A JP 2003505147 A JP2003505147 A JP 2003505147A JP 2001511853 A JP2001511853 A JP 2001511853A JP 2001511853 A JP2001511853 A JP 2001511853A JP 2003505147 A JP2003505147 A JP 2003505147A
Authority
JP
Japan
Prior art keywords
dislocation
prosthesis
femoral head
acetabulum
acetabular cup
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.)
Abandoned
Application number
JP2001511853A
Other languages
English (en)
Inventor
カルダローニ、ドナート
カルダローニ、フィオーレ
Original Assignee
テクノメカニカ エス.アール.エル.
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by テクノメカニカ エス.アール.エル. filed Critical テクノメカニカ エス.アール.エル.
Publication of JP2003505147A publication Critical patent/JP2003505147A/ja
Abandoned legal-status Critical Current

Links

Classifications

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    • 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
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    • AHUMAN NECESSITIES
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    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
    • A61B17/68Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/84Fasteners therefor or fasteners being internal fixation devices
    • A61B17/86Pins or screws or threaded wires; nuts therefor
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    • A61F2002/30354Cylindrically-shaped protrusion and recess, e.g. cylinder of circular basis
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    • A61F2220/0033Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by longitudinally pushing a protrusion into a complementary-shaped recess, e.g. held by friction fit
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    • A61F2220/0025Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
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Abstract

(57)【要約】 本発明は、大腿骨内に実現される対応する縦孔内に導入される軸部(2)と、大腿骨頚内に実現される対応する孔内に挿入され、前記軸部(2)に結合する大腿骨頭(4)とを備え、前記大腿骨頭(4)が、関節球状端部と、骨盤内に埋め込まれた寛骨臼(7)と、前記寛骨臼(7)と大腿骨頭(4)の前記球状端部との間に設けられた減摩寛骨臼カップ(8)とを有する脱臼防止両股義足(1)に関する。

Description

【発明の詳細な説明】
【0001】 本発明は、脱臼防止両股義足に関する。
【0002】 更に詳細には、本発明は、現存する義足により得られるものに対して、著しく
高い下肢の可動性が得られるように実現した、上記の種類の義足に関する。
【0003】 現在市場で入手可能な股義足は、十分な歩行を可能にするものであるが、脱臼
の可能性が高いという特徴がある。
【0004】 実際に、公知の股義足には著しい欠点があるという特徴がある。
【0005】 まず、下肢の歩行の可動性が限定され、特に屈曲、内転、伸展が限定されるこ
とに言及しなければならない。
【0006】 屈曲、すなわち下肢の胴側への屈曲に関する限り、下肢の最大到達可能角度は
90゜である。
【0007】 内転、すなわち下肢の後方への屈曲の際には、下肢の最大到達可能角度は10
゜であり、伸展、すなわち下肢の背面に沿った屈曲の際には、下肢の最大到達可
能角度は、立位の人間の体軸に対して10゜である。
【0008】 義足に前記の値を超える応力が掛かると、義足は脱臼するため、病院で緊急に
回復させて脱臼した義足を整復する必要があり、結果として一般に麻酔を受ける
ことが必要となる。
【0009】 前述の点は全て、脱臼が起こる可能性があるため患者に大きな不安を引き起こ
す。
【0010】 前述の点を鑑みて、出願人は前記欠点を解決し、主により高い歩行の自由を与
え、脱臼の危険性を著しく減らすことのできる股義足を実現した。
【0011】 本発明の解決法によって、既に前記したように、下肢の最適な歩行可動性が、
特に屈曲、内転、伸展に関して得られる。
【0012】 特に、本発明の解決法により、約127゜の肢屈曲、50゜の内転角度、約4
2゜の伸展角度が得られる。
【0013】 更に、本発明の解決法により、前記の値を超えた場合でも、義足は標準の状態
において、すなわち、睡眠、着席、階段の昇降、睡眠の際などに脱臼することが
なく、結果として患者に対し実用的かつ心理的な利点を与える。
【0014】 従って、本発明の特定の目的は、大腿骨内に実現される対応する縦孔内に導入
される軸部と、大腿骨頚内に実現される対応する孔内に挿入され、前記軸部に結
合する大腿骨頭とを備え、前記大腿骨頭が、関節球状端部と、骨盤内に埋め込ま
れた寛骨臼と、前記寛骨臼と大腿骨頭の前記球状端部との間に設けられた減摩寛
骨臼カップとを有する、脱臼防止両股義足である。
【0015】 本発明によれば、前記減摩寛骨臼カップは、寛骨臼内にリングによって保持さ
れることが好ましい。
【0016】 特に、本発明によれば、前記軸部は円錐台形の断面を有し、前記軸部を、チタ
ン合金もしくはAISI316Lステンレス鋼等の金属材料、または他の抗拒絶
性材料から構成することができる。
【0017】 更に本発明によれば、前記大腿骨頭を、ねじ切りまたは円錐台形結合等により
前記軸部に結合することができる。
【0018】 好ましくは、前記大腿骨頭を、チタン合金、AISI316Lステンレス鋼、
もしくはセラミック材料等の金属材料、または他の抗拒絶性材料から構成するこ
とができる。
【0019】 特に、大腿骨頭を軸部へ固定するために、軸部の軸に沿って動作する止めねじ
を設けることができる。
【0020】 更に、本発明によれば、前記寛骨臼を、骨盤内にねじによって埋め込むことが
でき、または接着、固定もしくは他の方法で固定することができる。
【0021】 更に、前記寛骨臼を、チタン合金もしくはAISI316Lステンレス鋼等の
金属材料、または他の抗拒絶性材料から構成することができる。
【0022】 常に本発明によれば、前記減摩寛骨臼カップを、F.D.A規則C.F.R.
177.2415およびUE規則90/128/E.E.C.による非毒性のポ
リアミド材料、または他の抗拒絶性材料から構成することができる。
【0023】 更に本発明によれば、寛骨臼カップと大腿骨頭との間に設けられた前記リング
を、寛骨臼にねじによって固定することができる。
【0024】 好ましくは、前記リングを、F.D.A規則C.F.R.177.2415お
よびUE規則90/128/E.E.C.による非毒性のポリアミド材料、また
は他の抗拒絶性材料から構成することができる。
【0025】 本発明について、好適な実施形態により、同封の図面を特に参照して説明する
が、これは例示のためであって限定的なものではない。
【0026】 まず同封の図面の図1〜3に注目すると、本発明の股義足の好適な実施形態が
示されており、これは全体が符号1で示されている。
【0027】 本発明の義足は複数の要素を備えており、その中には大腿骨3内に埋め込まれ
た軸部2がある(図2参照)。
【0028】 前記軸部2は、円錐台形密封もしくは接着するように、または別の種類の方法
により実現され、チタン合金もしくはAISI316Lステンレス鋼等の金属材
料、または他の抗拒絶性材料から構成される。
【0029】 符号4は大腿骨頭を示し、これは円錐台形結合したねじ山5により軸部2に結
合している。前記大腿骨頭4はチタン合金、AISI316Lステンレス鋼、も
しくはセラミック材料等の金属材料、または他の抗拒絶性材料から構成される。
【0030】 軸部2と大腿骨頭4とが埋め込まれると(図2)、好ましくはAISI316
Lステンレス鋼等の金属材料から構成される止めねじ6により、これらが互いに
ロックする。
【0031】 符号7は寛骨臼を示し、これは骨盤内にねじによって埋め込まれ、または接着
、固定もしくは他の方法で固定される。寛骨臼7は、チタン合金もしくはAIS
I316Lステンレス鋼等の金属材料、または他の抗拒絶性材料から構成される
【0032】 大腿骨頭4と寛骨臼7との間には、減摩寛骨臼カップ8が設けられ、これは寛
骨臼カップ8のリングによって寛骨臼7内に保持される。寛骨臼カップ8は、F
.D.A規則C.F.R.177.2415およびUE規則90/128/E.
E.C.による非毒性のポリアミド材料、または他の抗拒絶性材料から構成され
る。
【0033】 更に、脱臼防止密封する寛骨臼カップ8のリング9が設けられる。前記リング
はねじ10により寛骨臼7に固定される。リング9は、F.D.A規則第C.F
.R.177.2415およびUE規則90/128/E.E.C.による非毒
性のポリアミド材料から構成される。
【0034】 前記ねじ10は好ましくはフレア頭ねじであり、好ましくはAISI316L
ステンレス鋼もしくはチタン合金等の金属材料、または他の抗拒絶性材料から構
成される。
【0035】 図4aおよび4bは、本発明による義足1の屈曲機能により127゜の屈曲角
度に到達できることを示している。
【0036】 図5aおよび5bは、本発明による義足1の屈曲機能により50゜の内転角度
に到達できることを示している。
【0037】 図6aおよび6bは、本発明による義足1の屈曲機能により42゜の伸展角度
に到達できることを示している。
【0038】 本発明による義足の構造は、前記の歩行値を超えた場合でも、既に述べた標準
の状態で脱臼が起こらないようになっている。
【0039】 このように、外科的介入を受けた人がより安全な状態を得ることができる。脱
臼が起こらないのは、特に、整形外科医により前もって、例えば患者の体重に応
じて500g〜15kg、またはそれ以上の値に設定された制御抵抗に対抗する
、大腿骨頭4の閉込めリング9があるためである。
【0040】 しかし、前記の値および応力を超えた場合には、義足を埋め込んだ骨組織の完
全性を保つ必要があるため、脱臼が起こる。
【0041】 本発明による解決法により、義足1の簡単な「非観血的」整復、すなわち公知
の義足の脱臼の際に行われるような、一般に麻酔を伴う外科的介入なしに行う整
復が可能となる。
【0042】 本発明による義足の整復は、下肢の延長および内転方向への約30゜の伸展に
より行われる、専門医の整形外科的介入のみを必要とする。このように、本発明
による義足1が容易に整復されるのは、その先端にある大腿骨頭4が、応力なし
に寛骨臼カップ8内で自由に整復できるような寸法を有するリング状の浅浮彫り
で構成された球状の輪郭を有するからである。
【0043】 義足の整復後に、機能および安定性が元の状態に対して変更されることはない
【0044】 本発明の義足1により得られる別の顕著な利点は、インプラント介入に関する
ものである。
【0045】 実際に、本発明の義足(図2)により、大腿骨の上部では、縦円錐台形の縦孔
が実現され、大腿骨頚部分では、大腿骨上部の掘削および分離を行う必要なしに
、円筒形孔が実現される。
【0046】 本発明を、好適な実施形態により、限定的ではなく例示のために説明したが、
同封の請求の範囲で定義された関連範囲を逸脱することなく、修正および/また
は変更を当業者が導入することができることを理解すべきである。
【図面の簡単な説明】
【図1】 本発明の股義足の実施形態の斜視図である。
【図2】 図1の股義足の縦断面図である。
【図3】 図1の股義足の分解図である。
【図4】 aおよびbは本発明による義足の屈曲時の動作を示す図である。
【図5】 aおよびbは本発明による義足の内転時の動作を示す図である。
【図6】 aおよびbは本発明による義足の伸展時の動作を示す図である。
【手続補正書】特許協力条約第34条補正の翻訳文提出書
【提出日】平成13年7月3日(2001.7.3)
【手続補正1】
【補正対象書類名】明細書
【補正対象項目名】特許請求の範囲
【補正方法】変更
【補正の内容】
【特許請求の範囲】
【手続補正2】
【補正対象書類名】明細書
【補正対象項目名】0013
【補正方法】変更
【補正の内容】
【0013】 更に、本発明の解決法により、前記の値を超えた場合でも、義足は標準の状態
において、すなわち、睡眠、着席、階段の昇降、睡眠の際などに脱臼することが
なく、結果として患者に対し実用的かつ心理的な利点を与える。 US−A−3067740では、本発明の請求項1の前提特徴部分の特徴を有 する義足について記載されている。
【手続補正3】
【補正対象書類名】明細書
【補正対象項目名】0014
【補正方法】変更
【補正の内容】
【0014】 従って、本発明の特定の目的は、大腿骨内に実現される対応する縦孔内に導入
される軸部と、大腿骨頚内に実現される対応する孔内に挿入され、前記軸部に結
合する、特別な端部を有する大腿骨頭とを備え、前記大腿骨頭が、関節球状端部
と、骨盤内に埋め込まれた寛骨臼とを有する脱臼防止両股義足であって、減摩寛 骨臼カップが前記寛骨臼と大腿骨頭の前記球状端部との間に設けられ、前記減摩 寛骨臼カップが寛骨臼内にリングによって保持され、溝が大腿骨頭の前記球状端 部に設けられたことを特徴と する、脱臼防止両股義足である。
───────────────────────────────────────────────────── フロントページの続き (81)指定国 EP(AT,BE,CH,CY, DE,DK,ES,FI,FR,GB,GR,IE,I T,LU,MC,NL,PT,SE),OA(BF,BJ ,CF,CG,CI,CM,GA,GN,GW,ML, MR,NE,SN,TD,TG),AP(GH,GM,K E,LS,MW,MZ,SD,SL,SZ,TZ,UG ,ZW),EA(AM,AZ,BY,KG,KZ,MD, RU,TJ,TM),AE,AG,AL,AM,AT, AU,AZ,BA,BB,BG,BR,BY,BZ,C A,CH,CN,CU,CZ,DE,DK,DM,DZ ,EE,ES,FI,GB,GD,GE,GH,GM, HR,HU,ID,IL,IN,IS,JP,KE,K G,KP,KR,KZ,LC,LK,LR,LS,LT ,LU,LV,MA,MD,MG,MK,MN,MW, MX,MZ,NO,NZ,PL,PT,RO,RU,S D,SE,SG,SI,SK,SL,TJ,TM,TR ,TT,TZ,UA,UG,US,UZ,VN,YU, ZA,ZW Fターム(参考) 4C081 AB05 BA02 BB05 CA231 CG02 CG05 4C097 AA05 AA06 BB01 BB09 CC01 CC04 DD09 DD10 EE11 SC02 SC04 SC06

Claims (12)

    【特許請求の範囲】
  1. 【請求項1】 大腿骨内に実現される対応する縦孔内に導入される軸部と、
    大腿骨頚内に実現される対応する孔内に挿入され、前記軸部に結合する大腿骨頭
    とを備え、前記大腿骨頭が、関節球状端部と、骨盤内に埋め込まれた寛骨臼と、
    前記寛骨臼と大腿骨頭の前記球状端部との間に設けられた減摩寛骨臼カップとを
    有することを特徴とする脱臼防止両股義足。
  2. 【請求項2】 前記減摩寛骨臼カップは、寛骨臼内にリングによって保持さ
    れることを特徴とする、請求項1に記載の脱臼防止両股義足。
  3. 【請求項3】 前記軸部は、円錐台形の断面を有することを特徴とする、前
    記請求項のうちの一項に記載の脱臼防止両股義足。
  4. 【請求項4】 前記軸部は、チタン合金もしくはAISI316Lステンレ
    ス鋼等の金属材料、または他の抗拒絶性材料から構成されることを特徴とする、
    前記請求項のうちの一項に記載の脱臼防止両股義足。
  5. 【請求項5】 前記大腿骨頭は、ねじ切りまたは円錐台形結合等により前記
    軸部に結合されることを特徴とする、前記請求項のうちの一項に記載の脱臼防止
    両股義足。
  6. 【請求項6】 前記大腿骨頭は、チタン合金、AISI316Lステンレス
    鋼、もしくはセラミック材料等の金属材料、または他の抗拒絶性材料から構成さ
    れることを特徴とする、前記請求項のうちの一項に記載の脱臼防止両股義足。
  7. 【請求項7】 大腿骨頭を軸部へ固定するために、軸部の軸に沿って動作す
    る止めねじが設けられることを特徴とする、前記請求項のうちの一項に記載の脱
    臼防止両股義足。
  8. 【請求項8】 前記寛骨臼は、骨盤内にねじによって埋め込まれ、または接
    着、固定もしくは他の方法で固定されることを特徴とする、前記請求項のうちの
    一項に記載の脱臼防止両股義足。
  9. 【請求項9】 前記寛骨臼は、チタン合金もしくはAISI316Lステン
    レス鋼等の金属材料、または他の抗拒絶性材料から構成されることを特徴とする
    、前記請求項のうちの一項に記載の脱臼防止両股義足。
  10. 【請求項10】 前記減摩寛骨臼カップは、F.D.A規則C.F.R.1
    77.2415およびUE規則90/128/E.E.C.による非毒性のポリ
    アミド材料、セラミック材料または他の抗拒絶性材料から構成されることを特徴
    とする、前記請求項のうちの一項に記載の脱臼防止両股義足。
  11. 【請求項11】 寛骨臼カップと大腿骨頭との間に設けられた前記リングは
    、寛骨臼にねじによって固定されることを特徴とする、前記請求項のうちの一項
    に記載の脱臼防止両股義足。
  12. 【請求項12】 前記リングは、F.D.A規則C.F.R.177.24
    15およびUE規則90/128/E.E.C.による非毒性のポリアミド材料
    から構成されることを特徴とする、前記請求項のうちの一項に記載の脱臼防止両
    股義足。
JP2001511853A 1999-07-27 2000-07-11 脱臼防止両股義足 Abandoned JP2003505147A (ja)

Applications Claiming Priority (3)

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IT99A000014 1999-07-27
IT1999FR000014A IT1316060B1 (it) 1999-07-27 1999-07-27 Protesi di anca bilaterale antilussante.
PCT/IT2000/000284 WO2001006960A1 (en) 1999-07-27 2000-07-11 Anti-dislocation bilateral hip prosthesis

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JP (1) JP2003505147A (ja)
AU (1) AU5847200A (ja)
CA (1) CA2379789A1 (ja)
IL (1) IL147546A0 (ja)
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CN104874019A (zh) * 2015-05-22 2015-09-02 中奥汇成科技股份有限公司 一种人工关节股骨柄
CN104840277B (zh) * 2015-05-22 2017-09-29 中奥汇成科技股份有限公司 一种人工髋臼外杯

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3067740A (en) * 1959-09-08 1962-12-11 Edward J Haboush Hip joint prosthesis
US3683421A (en) * 1970-07-13 1972-08-15 Skf Ind Inc Prosthetic joint assembly
SU440014A1 (ru) * 1972-05-04 1978-08-05 Саратовский государственный медицинский институт Эндропротез проксимального конца бедренной кости
FR2210909A5 (ja) * 1972-12-20 1974-07-12 Rambert Andre
EP0257359B1 (en) * 1986-08-15 1991-11-27 Boehringer Mannheim Corporation Modular hip prosthesis
FR2668702B1 (fr) * 1990-11-06 1995-06-09 Impact Tige femorale perfectionnee pour prothese de hanche.
DE4402675A1 (de) * 1993-11-26 1995-06-01 Cerasiv Gmbh Konische Hüftgelenkpfanne ohne Selbsthemmung

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IL147546A0 (en) 2002-08-14
ITFR990014A1 (it) 2001-01-27
AU5847200A (en) 2001-02-13
EP1196117A1 (en) 2002-04-17
IT1316060B1 (it) 2003-03-28
CA2379789A1 (en) 2001-02-01

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