JP2003522593A - 骨細管へ挿入するための栓 - Google Patents

骨細管へ挿入するための栓

Info

Publication number
JP2003522593A
JP2003522593A JP2001559387A JP2001559387A JP2003522593A JP 2003522593 A JP2003522593 A JP 2003522593A JP 2001559387 A JP2001559387 A JP 2001559387A JP 2001559387 A JP2001559387 A JP 2001559387A JP 2003522593 A JP2003522593 A JP 2003522593A
Authority
JP
Japan
Prior art keywords
plug
flange
bone
central body
flanges
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.)
Pending
Application number
JP2001559387A
Other languages
English (en)
Inventor
サレト, コーネリス ヘッセリング,
ペトラス, タラシウス, ジョセフス スピエリングス,
Original Assignee
イソティス エヌ.ブイ.
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
Priority claimed from EP00200565A external-priority patent/EP1127558A1/en
Priority claimed from EP00200566A external-priority patent/EP1127559A1/en
Priority claimed from EP00203547A external-priority patent/EP1197191A1/en
Application filed by イソティス エヌ.ブイ. filed Critical イソティス エヌ.ブイ.
Publication of JP2003522593A publication Critical patent/JP2003522593A/ja
Pending legal-status Critical Current

Links

Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61LMETHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L31/00Materials for other surgical articles, e.g. stents, stent-grafts, shunts, surgical drapes, guide wires, materials for adhesion prevention, occluding devices, surgical gloves, tissue fixation devices
    • A61L31/04Macromolecular materials
    • A61L31/06Macromolecular materials obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • AHUMAN NECESSITIES
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    • 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
    • A61F2/30721Accessories
    • A61F2/30723Plugs or restrictors for sealing a cement-receiving space
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    • A61F2/46Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor
    • A61F2/4603Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof
    • A61F2/4614Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof of plugs for sealing a cement-receiving space
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    • A61F2002/30004Material related properties of the prosthesis or of a coating on the prosthesis the prosthesis being made from materials having different values of a given property at different locations within the same prosthesis
    • A61F2002/30014Material related properties of the prosthesis or of a coating on the prosthesis the prosthesis being made from materials having different values of a given property at different locations within the same prosthesis differing in elasticity, stiffness or compressibility
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    • A61F2002/3006Properties of materials and coating materials
    • A61F2002/30062(bio)absorbable, biodegradable, bioerodable, (bio)resorbable, resorptive
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    • A61F2250/0029Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof having different values of a given property or geometrical feature, e.g. mechanical property or material property, at different locations within the same prosthesis differing in bending or flexure capacity
    • 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
    • A61F2250/00Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2250/0014Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof having different values of a given property or geometrical feature, e.g. mechanical property or material property, at different locations within the same prosthesis
    • A61F2250/0036Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof having different values of a given property or geometrical feature, e.g. mechanical property or material property, at different locations within the same prosthesis differing in thickness
    • 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
    • A61F2250/00Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
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    • A61F2250/0039Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof having different values of a given property or geometrical feature, e.g. mechanical property or material property, at different locations within the same prosthesis differing in diameter
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
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    • A61F2250/00Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
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Abstract

(57)【要約】 骨細管(14)へ挿入するための栓(1)が開示されている。栓(1)は、実質的に等しい形および大きさの少なくとも4つの半径方向に広がるフランジ(3)を有する、実質的に一定の断面積の細長い中心体(2)を含む。フランジ(3)は、切れ目のない固い円盤状の構造を形成し、実質的に平行な平面に広がるように、体(2)の中心軸に沿って軸方向に間隔をあけられている。栓(1)は、ポリアルキレングリコールテレフタレートおよび芳香族ポリエステルのコポリマーでできている。

Description

【発明の詳細な説明】
【0001】
【発明の属する技術分野】
本発明は、骨細管(bone canal)へ挿入するための栓に関する。
【0002】
【従来の技術】
骨細管へ挿入するための栓は一般に知られており、補綴移植中にセメントの流
れを制限するために使用される。
【0003】 移植手術、特に股関節部の補綴物の移植のための手術においては、補綴物を骨
へセメント接着することが普通実施される。補綴物を骨へセメント接着するため
に、柱状の多孔性骨部分を除き、残った皮質の堅い骨部分が骨細管の壁を規定す
るように、骨細管に穴をあけ、または穴を広げられる。次に、補綴物の固定部分
が、骨細管へと挿入される。例えば、補綴物の球状部分が外へ広がって、股関節
部の天然の骨の球状部分と置き換わるように、股関節部の補綴物の固定部分が、
穴をあけられた大腿骨へと挿入される。
【0004】 補綴物の固定部分を骨へ取り付けるために、セメント、例えばポリメチルメタ
クリレート(PMMA)が骨細管へと挿入され、挿入前に補綴物に充填される。次に、
このセメントは、補綴物の固定部分を骨物質へ固定する。
【0005】 セメント界面での補綴物と骨との間の確かな結合を供給するために、補綴物と
骨物質との間の隙間でセメントが補綴物を完全に取り囲むようにすることが望ま
しい。しかしながら、移植片の挿入中にはたらく挿入力と圧力はしばしば、セメ
ント物質を骨髄内細管へと下げて、固定領域から離れさせてしまう。このように
して、セメントマントル中に空隙が形成され、これは後に、補綴および/または
固定の早期疲労へと至る応力点になる。
【0006】 骨のセメントが骨髄内細管へさらに流れるのを制限するために、骨髄内充填装
置または「栓」が開発されており、これは、妨害物として骨細管へと挿入するこ
とができる。通常、栓はフィン(fin)または他のフランジ状の突起を備えている
。これらのフィンまたはフランジは、壁の束縛を締めつけることによる骨細管中
の栓の同時固定のために、かつ骨細管のセメント通行を妨げるために働く。移植
片が骨髄内細管の穴をあけられた部分へと押しつけられるときには、制限された
骨セメントが細管を下方へ流れる傾向は、細管の壁と協同する栓のフィンまたは
フランジによって妨げられる。
【0007】
【発明が解決しようとする課題】
公知の栓に関しての問題は、フィンまたはフランジが、常に十分に封止的に(s
ealingly)または閉塞的に(blockingly)骨細管と協同するわけではないことであ
る。これは主として、皮質の骨によって規定される骨細管が、その長手軸に沿っ
て変化する断面を有するという事実によって引き起こされる。特に、断面は、細
管の開始では実質的に長円形または楕円形をしており、中間部分では、軸の方向
に内部へより円形に形作られるようになる。さらに内部へいくと、断面は再び実
質的に楕円または長円形になり、最初の部分の配向に実質的に垂直である位置へ
、細管の軸のまわりに回転する配向を有する。さらには、各人について、骨の大
きさおよびそれと共に断面ならびに骨細管の軸の寸法は変化する。
【0008】 移植中、栓は、骨細管内の所定の場所に、例えば挿入後に固定部分の下方端の
好ましい位置から軸方向へ内部に約1.5cmの場所に、封止的に置かれなければな
らない。
【0009】 骨細管の変化する形の故に、任意の軸方向の場所で信頼性よく細管に栓をする
ために使用することができる栓を提供することは、困難であることが判明した。
周囲環境に依存して、セメントが栓のフランジを通過することができるか、また
は固定部分を挿入すると、栓が内部に細管中へと逃れることができるよい機会が
存在する。
【0010】 従来、フランジと骨細管との不十分な協同の問題を克服するために、複数のフ
ランジを有する栓を提供することが示唆されており、例えば米国特許明細書第5,
383,932号に記載されているような、円盤状のフィンが広がる中心体を先細りに
することによって、または米国特許明細書第5,879,403号に記載されているよう
な、大きさが増加する円盤状のフィンを有する中心体を提供することによって、
それぞれが、変化する半径寸法を有する。しかしながら、この解決は、1つ以上
のフランジが十分に強く壁を束縛しない可能性が存在するという不都合を有し、
このことは、栓を細管中へと逃れさせ得る。その上、従来、半径方向の切れ目を
有するフランジを提供することが提案されており、それによって、骨細管の予期
されないほどに狭い部分へのそのようなフランジの挿入が容易にされる。その例
は、例えば米国特許明細書第4,245,359号または米国特許明細書第5,766,178号に
示されている。
【0011】 しかしながら、これは、フランジの上部表面が開いているときに、栓のフラン
ジをセメントが通過する可能性を増加させる。
【0012】
【課題を解決するための手段】
本発明は、上記の問題が解決される栓を提供することを目的とする。本発明に
よれば、骨細管に挿入するための栓が提供され、これは、実質的に等しい形およ
び大きさの少なくとも4つの半径方向に広がる該フランジを有する、実質的に一
定の断面積の細長い中心体を含み、フランジは、実質的に平行な平面で広がるよ
うに、体の中心軸に沿って軸方向に間隔をあけられており、該栓はポリアルキレ
ングリコールテレフタレートおよび芳香族ポリエステルのコポリマーでできてい
る。
【0013】 驚くべきことに、ポリアルキレングリコールテレフタレートおよび芳香族ポリ
エステルのコポリマーは、減少する半径寸法を有するフランジを提供する必要な
しに、複数の軸方向に間隔をあけられた同一のフランジを有する栓形態を見込む
ことがわかった。少なくとも4つのフランジはそれぞれ、骨細管の壁を束縛する
等しい可能性を有する。配置および材料の特定の組合せは、フランジが、なお生
物適合性かつ生分解性の物質でできていながら、骨細管の壁と十分に封止的かつ
閉塞的の両方で協同することを可能にする。周囲の流体に応じた材料の膨張の故
に、フランジ中の任意の半径方向の切れ目を、使用中に閉じることができる。
【0014】 可撓性をさらに高めるために、少なくとも1つのフランジは、曲げ域を取り囲
む支持域に比べて減少された材料厚みを有する少なくとも1つの曲げ域を備える
ことができる。特に、フランジは開口部を備えることができ、これはフランジを
通って軸方向に伸びることができるかまたはそうでないことができる。フランジ
を通って軸方向に伸びない開口部の例は、閉鎖された小室または空隙、盲穴およ
び溝である。フランジを通って軸方向に伸びる開口部の例は、穴および溝を通る
貫通である。材料の膨張の故に、フランジを通って軸方向に伸びる開口部は、使
用中に、例えば軸方向に先細にされたフランジ中の貫通の場合、少なくとも部分
的に閉じることができる。
【0015】 材料の可撓性はまた、フランジが、切れ目なしに、閉じられた表面を備えるこ
とを可能にする。これは、漏れの可能性を減らして最小にする。特に、フランジ
は、使用中に軸方向にフランジを通って伸びるどんな開口部をも有さないことが
できる。
【0016】 好ましくは、コポリマーは、20〜90重量%、より好ましくは50〜80重量%のポ
リアルキレングリコールテレフタレートおよび、80〜10重量%、より好ましくは
50〜20重量%の芳香族ポリエステルを含む。本発明のコポリマーの好ましいタイ
プは、ブロックコポリマーの群によって形成される。
【0017】 ポリアルキレングリコールテレフタレートは、重量平均分子量約150〜約4000
を有することができる。好ましくは、ポリアルキレングリコールテレフタレート
は、重量平均分子量200〜1500を有する。芳香族ポリエステルは好ましくは、重
量平均分子量200〜5000、より好ましくは250〜4000を有する。コポリマーの重量
平均分子量は好ましくは、10,000〜300,000、より好ましくは40,000〜120,000に
ある。
【0018】 重量平均分子量は、ゲル浸透クロマトグラフィー(GPC)によって適当に決定す
ることができる。自体公知のこの技術は、例えば、溶媒としてクロロホルムを使
用し、外部標準としてポリスチレンを使用して行うことができる。あるいは、重
量平均分子量のための測定は、粘度測定(NEN-EN-ISO 1628-1参照)を用いて得
ることができる。この技術は、例えば25℃にて、溶媒としてクロロホルムを用い
て行うことができる。好ましくは、コポリマーの固有粘度は、0.2289〜1.3282 d
L/gにあり、これは、重量平均分子量10,000〜200,000に相当する。同様に、上記
したGPCにより測定した重量平均分子量のより好ましい範囲がまた、固有粘度に
よって表すことができる。
【0019】 好ましい実施態様においては、ポリアルキレングリコールテレフタレート成分
は、式-OLO-CO-Q-CO-の単位を有し、ここで、Oは酸素を表し、Cは炭素を表し、L
は、ポリ(オキシアルキレン)グリコールから末端ヒドロキシル基を除去した後
に残る2価の有機基であり、Qは2価の有機基である。
【0020】 好ましいポリアルキレングリコールテレフタレートは、ポリエチレングリコー
ルテレフタレート、ポリプロピレングリコールテレフタレートおよびポリブチレ
ングリコールテレフタレートならびにそれらのコポリマー、例えばポロキサマー
(poloxamer)からなる群より選択される。非常に好ましいポリアルキレングリコ
ールテレフタレートはポリエチレングリコールテレフタレートである。
【0021】 アルキレンおよびポリアルキレンという語は一般に、任意の異性体構造をいい
、すなわち、プロピレンは、1,2-プロピレンおよび1,3-プロピレンの両方を含み
、ブチレンは、1,2-ブチレン、1,3-ブチレン、2,3-ブチレン、1,2-イソブチレン
、1,3-イソブチレンおよび1,4-イソブチレン(テトラメチレン)を含み、より高
次のアルキレン同族体についても同様である。ポリアルキレングリコールテレフ
タレート成分は好ましくは、ジカルボン酸残基-CO-Q-CO-で終結されて、必要な
らポリエステル成分への結合を与える。基Qは、Rと同義を有する芳香族基である
か、または脂肪族基、例えばエチレン、プロピレン、ブチレン等であることがで
きる。
【0022】 ポリエステル成分は好ましくは、単位-O-E-O-CO-R-CO-を有し、ここで、Oは酸
素を表し、Cは炭素を表し、Eは置換または非置換の、2〜8個の炭素原子を有す
るアルキレンもしくはオキシジアルキレン基であり、Rは置換または非置換の2
価芳香族基である。
【0023】 好ましい実施態様においては、ポリエステルは、ポリエチレンテレフタレート
、ポリプロピレンテレフタレートおよびポリブチレンテレフタレートからなる群
より選択される。非常に好ましいポリエステルは、ポリブチレンテレフタレート
である。
【0024】 コポリマーの製造をここで、ポリエチレングリコールテレフタレート/ポリブ
チレンテレフタレートコポリマーについての例によって説明する。この記載に基
づいて、当業者は、上記した種類の中のいかなる所望のコポリマーをも製造する
ことができる。ポリアルキレングリコールテレフタレート/ポリエステルコポリ
マーを製造するための代替の方法は、米国特許明細書第3,908,201号に開示され
ている。
【0025】 ポリエチレングリコールテレフタレート/ポリブチレンテレフタレートコポリ
マーは、ジメチルテレフタレート、ブタンジオール(過剰)、ポリエチレングリ
コール、酸化防止剤および触媒の混合物から合成することができる。混合物を反
応容器中に置き、約180℃に加熱し、エステル交換が進行するにつれてメタノー
ルが留出する。エステル交換中、メチルとのエステル結合が、ブチレンおよび/
またはポリエチレングリコールとのエステル結合で置換される。エステル交換後
、温度をゆっくりと約245℃に上げ、減圧(最終的に0.1ミリバール未満)を達成
する。過剰のブタンジオールを留去し、ブタンジオールテレフタレートのプレポ
リマーがポリエチレングリコールと縮合して、ポリエチレン/ポリブチレンテレ
フタレートコポリマーを形成する。テレフタレート部分は、ポリエチレングリコ
ール単位をコポリマーのポリブチレンテレフタレート単位に結合し、かくして、
そのようなコポリマーはまたときには、ポリエチレングリコールテレフタレート
/ポリブチレンテレフタレートコポリマー(PEGT/PBTコポリマー)と称する。
【0026】 本発明のさらに好ましい実施態様は、添付の特許請求の範囲に記載されている
【0027】 本発明を図面によってさらに説明する。図面において、 図1は、骨栓の概略的断面図であり; 図2は、図1の骨栓の概略的見取図であり; 図3は、栓が挿入される骨細管の一部の概略的断面図であり; 図4は、図1に対応する骨栓の写真を示し; 図5は、透明物質の塊中の穴に挿入された図4の骨栓の写真を示し; 図6は、図5の塊の上面写真を示し;および 図7は、フランジの可撓性を高めるための、種々のタイプの曲げ域を有するフ
ランジの断面を示す。
【0028】 図面は、栓の典型的実施態様の概略的描写にすぎない。図面において、同じま
たは対応する部分は同じ参照番号を用いて同一視されている。
【0029】 図1および2は、骨細管へと挿入するための栓1を示す。栓1は、実質的に一
定の断面積の細長い中心体2を含む。中心体2は、等しい形および大きさの、4
つの半径方向に広がるフランジを有する。フランジ3は、切れ目のない閉じた表
面を有する固い円盤状の構造を形成する。フランジ3は、どのような切れ目も含
まず、変形すると、閉じた封止表面を維持する。フランジ3は、体1の中心軸A
に沿って軸方向に間隔をあけられ、実質的に平行な平面Pにおいて広がる。栓1
は、上記したように、ポリアルキレングリコールテレフタレートおよび芳香族ポ
リエステルのコポリマーでできている。
【0030】 中心体1は、その正面部分4に、正面フランジ5を有する。正面フランジ5は
、他のフランジ3に比べてより小さい半径寸法を有する。図面において、その差
はΔRで示される。このようにして、栓1の正面部分4を、骨細管中へより容易
に挿入することができ、挿入されると、中心付け(centering)効果を与える。挿
入をさらに促進するために、正面フランジ5は、凸面状上部表面6を有する。示
された実施態様においては、他のフランジの上部表面9はまた、挿入中に栓の後
方末端8の方向に少し曲げられているか、または傾斜している。好ましくは、フ
ランジ5、3は実質的に平面であるか、または後方へ傾斜する底部表面9を有す
る。さらに、フランジ3、5は、上部表面6、7から後方表面9へ広がる丸くな
った端10を備えている。このようにして、骨細管の側壁の封止束縛が促進される
【0031】 栓1は、栓の後方部分8から正面部分4へと軸方向へ伸びる盲穴11をさらに含
む。盲穴11は、図3に示されているように、それを用いて栓1が挿入方向13で骨
細管14へと挿入される道具12の先端を挿入するために使用される。
【0032】 図3においては、栓1の形態および材料の組合せの故に、どのように栓1が変
形して、封止的かつ閉塞的の両方で、骨細管の側壁と協同することができるかが
示されている。
【0033】 図4について言及すると、図2に示された図と類似の骨栓1の写真が示されて
いる。 図5は、透明物質の塊B中の円筒細管に挿入された骨栓1の骨栓の写真を示す
。 図6は、図5の塊の上面写真を示す。
【0034】 図5および6から、フランジが、塊B中の穴の壁を封止的に束縛することが明
らかである。図5においては、正面フランジ5は、その小さい半径寸法の故に、
他のフランジ3より低い程度の後方への曲げを示すことが示されている。図6の
上面図は、切れ目のない閉じた表面を有する後方のフランジ3を示す。
【0035】 図7に示されているように、可撓性をさらに高めるために、フランジ3は、曲
げ域Zを取り囲む支持域Sでの材料の厚みt1に比べて減少された材料厚みt2を有す
る、幾つかの曲げ域Zを備えることができる。特に、フランジ3は、上部表面6
から底部表面9へフランジ3を通って軸A'に沿って軸方向に伸びる開口部、すな
わち真直ぐなトラフ穴21および、軸方向に先細りになった貫通22を備えており、
これは、支持域Sの材料が膨張すると、閉じることができる。これらの場合に、
曲げ域Zにおける材料の厚みt2は、局部的にゼロへと減少される。フランジを通
って軸方向に伸びない開口部がまた、空隙23および盲穴24として示されている。
【0036】 栓が、本明細書に記載された好ましい実施態様に限定されないこと、および添
付の特許請求の範囲内で多くの変更が可能なことは、当業者には明らかであろう
。例えば、半径方向の切れ目を有するフランジを提供することが可能である。ポ
リアルキレングリコールテレフタレートおよび芳香族ポリエステルのコポリマー
の膨張挙動の故に、そのような切れ目は、使用時に閉じることができる。
【0037】 特に、栓が、身体の種々の骨の骨細管、例えば肩の補綴のために上腕骨細管に
、または膝の補綴のために下脚骨細管において使用できることに注意すべきであ
る。
【0038】
【図面の簡単な説明】
図1は、骨栓の概略的断面図であり; 図2は、図1の骨栓の概略的見取図であり; 図3は、栓が挿入される骨細管の一部の概略的断面図であり; 図4は、図1に対応する骨栓の写真を示し; 図5は、透明物質の塊中の穴に挿入された図4の骨栓の写真を示し; 図6は、図5の塊の上面写真を示し;および 図7は、フランジの可撓性を高めるための、種々のタイプの曲げ域を有するフ
ランジの断面を示す。
───────────────────────────────────────────────────── フロントページの続き (31)優先権主張番号 00203547.5 (32)優先日 平成12年10月12日(2000.10.12) (33)優先権主張国 欧州特許庁(EP) (81)指定国 EP(AT,BE,CH,CY, DE,DK,ES,FI,FR,GB,GR,IE,I T,LU,MC,NL,PT,SE,TR),OA(BF ,BJ,CF,CG,CI,CM,GA,GN,GW, ML,MR,NE,SN,TD,TG),AP(GH,G M,KE,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,B Z,CA,CH,CN,CR,CU,CZ,DE,DK ,DM,DZ,EE,ES,FI,GB,GD,GE, GH,GM,HR,HU,ID,IL,IN,IS,J P,KE,KG,KP,KR,KZ,LC,LK,LR ,LS,LT,LU,LV,MA,MD,MG,MK, MN,MW,MX,MZ,NO,NZ,PL,PT,R O,RU,SD,SE,SG,SI,SK,SL,TJ ,TM,TR,TT,TZ,UA,UG,US,UZ, VN,YU,ZA,ZW Fターム(参考) 4C060 LL13 MM24

Claims (11)

    【特許請求の範囲】
  1. 【請求項1】 骨細管に挿入するための栓であって、実質的に等しい形およ
    び大きさの少なくとも4つの半径方向に広がる該フランジを有する、実質的に一
    定の断面積の細長い中心体を含み、フランジは、実質的に平行な平面で広がるよ
    うに、体の中心軸に沿って軸方向に間隔をあけられており、該栓はポリアルキレ
    ングリコールテレフタレートおよび芳香族ポリエステルのコポリマーでできてい
    るところの栓。
  2. 【請求項2】 少なくとも1つのフランジが、曲げ域を取り囲む支持域に比
    べて減少された材料厚みを有する少なくとも1つの曲げ域を備えている請求項1
    記載の栓。
  3. 【請求項3】 フランジが、閉じた表面を有する固い円盤状構造を形成する
    請求項1または2記載の栓。
  4. 【請求項4】 中心体が、少なくとも5つの半径方向に広がるフランジを有
    し、中心体の正面部分にある正面フランジは、他のフランジと比べて小さい半径
    寸法を備えている請求項1〜3のいずれか1項記載の栓。
  5. 【請求項5】 少なくとも正面フランジが、凸面状に曲げられた上部表面を
    有する請求項3または4記載の栓。
  6. 【請求項6】 フランジが、実質的に平らな底部表面を含む請求項1〜5の
    いずれか1項記載の栓。
  7. 【請求項7】 フランジが丸くなった端を備えている請求項1〜6のいずれ
    か1項記載の栓。
  8. 【請求項8】 中心体が、中心体の後方部分から軸方向に伸びる盲穴を備え
    ている請求項1〜7のいずれか1項記載の栓。
  9. 【請求項9】 中心体の後方部分が、フランジの裏表面として半径方向に広
    がる請求項1〜7のいずれか1項記載の栓。
  10. 【請求項10】 ポリアルキレングリコールテレフタレートがポリエチレン
    グリコールテレフタレートであり、かつ芳香族ポリエステルがポリブチレンテレ
    フタレートである請求項1〜9のいずれか1項記載の栓。
  11. 【請求項11】 コポリマーが、コポリマーの重量に基づいて20〜90重量%
    (好ましくは50〜80重量%)のポリエチレングリコールテレフタレートを含む請
    求項10記載の栓。
JP2001559387A 2000-02-18 2001-02-19 骨細管へ挿入するための栓 Pending JP2003522593A (ja)

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
EP00200565.0 2000-02-18
EP00200566.8 2000-02-18
EP00200565A EP1127558A1 (en) 2000-02-18 2000-02-18 Plug for insertion into a bone canal
EP00200566A EP1127559A1 (en) 2000-02-18 2000-02-18 Plug for insertion into a bone canal
EP00203547A EP1197191A1 (en) 2000-10-12 2000-10-12 Plug for insertion into a bone canal
EP00203547.5 2000-10-12
PCT/NL2001/000134 WO2001060288A1 (en) 2000-02-18 2001-02-19 Plug for insertion into a bone canal

Publications (1)

Publication Number Publication Date
JP2003522593A true JP2003522593A (ja) 2003-07-29

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US (2) US6752833B2 (ja)
EP (1) EP1255515B1 (ja)
JP (1) JP2003522593A (ja)
AT (1) ATE397905T1 (ja)
AU (1) AU773803B2 (ja)
CA (1) CA2378459A1 (ja)
DE (1) DE60134388D1 (ja)
WO (1) WO2001060288A1 (ja)

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Also Published As

Publication number Publication date
CA2378459A1 (en) 2001-08-23
US20020111693A1 (en) 2002-08-15
US6752833B2 (en) 2004-06-22
WO2001060288A1 (en) 2001-08-23
ATE397905T1 (de) 2008-07-15
US20040176854A1 (en) 2004-09-09
AU773803B2 (en) 2004-06-10
EP1255515A1 (en) 2002-11-13
DE60134388D1 (de) 2008-07-24
EP1255515B1 (en) 2008-06-11
AU3781901A (en) 2001-08-27

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