JPH0464709B2 - - Google Patents

Info

Publication number
JPH0464709B2
JPH0464709B2 JP2132444A JP13244490A JPH0464709B2 JP H0464709 B2 JPH0464709 B2 JP H0464709B2 JP 2132444 A JP2132444 A JP 2132444A JP 13244490 A JP13244490 A JP 13244490A JP H0464709 B2 JPH0464709 B2 JP H0464709B2
Authority
JP
Japan
Prior art keywords
tubular member
lumen
distal end
catheter
inflation
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.)
Expired - Lifetime
Application number
JP2132444A
Other languages
English (en)
Other versions
JPH037169A (ja
Inventor
Eru Shotsukii Ritsuku
Ei Uan Tatsuseru Robaato
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Schneider USA Inc
Original Assignee
Schneider USA Inc
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 Schneider USA Inc filed Critical Schneider USA Inc
Publication of JPH037169A publication Critical patent/JPH037169A/ja
Publication of JPH0464709B2 publication Critical patent/JPH0464709B2/ja
Granted legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00—Catheters; Hollow probes
    • A61M25/10—Balloon catheters
    • 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
    • A61F2/82—Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators; Tracheal tubes
    • A61M16/04—Tracheal tubes
    • A61M16/0434—Cuffs
    • A61M16/0454—Redundant cuffs
    • A61M16/0456—Redundant cuffs one cuff within another
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators; Tracheal tubes
    • A61M16/04—Tracheal tubes
    • A61M16/0475—Tracheal tubes having openings in the tube
    • A61M16/0477—Tracheal tubes having openings in the tube with incorporated means for delivering or removing fluids
    • A61M16/0481—Tracheal tubes having openings in the tube with incorporated means for delivering or removing fluids through the cuff wall
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00—Catheters; Hollow probes
    • A61M25/10—Balloon catheters
    • A61M25/1011—Multiple balloon catheters
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00—Catheters; Hollow probes
    • A61M25/10—Balloon catheters
    • A61M25/104—Balloon catheters used for angioplasty
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/22—Implements for squeezing-off ulcers or the like on inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; for invasive removal or destruction of calculus using mechanical vibrations; for removing obstructions in blood vessels, not otherwise provided for
    • A61B2017/22082—Implements for squeezing-off ulcers or the like on inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; for invasive removal or destruction of calculus using mechanical vibrations; for removing obstructions in blood vessels, not otherwise provided for after introduction of a substance
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00—Catheters; Hollow probes
    • A61M25/10—Balloon catheters
    • A61M25/1011—Multiple balloon catheters
    • A61M2025/1013—Multiple balloon catheters with concentrically mounted balloons, e.g. being independently inflatable
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00—Catheters; Hollow probes
    • A61M25/10—Balloon catheters
    • A61M2025/1043—Balloon catheters with special features or adapted for special applications
    • A61M2025/105—Balloon catheters with special features or adapted for special applications having a balloon suitable for drug delivery, e.g. by using holes for delivery, drug coating or membranes

Landscapes

  • Health & Medical Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Pulmonology (AREA)
  • Public Health (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Veterinary Medicine (AREA)
  • Anesthesiology (AREA)
  • Hematology (AREA)
  • Biophysics (AREA)
  • Child & Adolescent Psychology (AREA)
  • Emergency Medicine (AREA)
  • Vascular Medicine (AREA)
  • Transplantation (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Cardiology (AREA)
  • Media Introduction/Drainage Providing Device (AREA)
  • Materials For Medical Uses (AREA)
  • Medicines Containing Material From Animals Or Micro-Organisms (AREA)
  • Surgical Instruments (AREA)
  • Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems (AREA)
  • Prostheses (AREA)
  • Tires In General (AREA)
  • Medicinal Preparation (AREA)

Description

【発明の詳細な説明】 産業上の利用分野 本発明は、経皮経腔血管成形外科手術を実行す
る装置及び方法、詳細には、処置されるべき組織
障害の場所の膨張と、適当な薬物その他の液体を
処置する場所に同時に送ることを可能とする装置
及び方法に関する。
従来の技術 1970年代半ば以前は、動脈硬化又はその他の血
管の狭窄障害の処置を主たる方法は、該ブロツク
を外科的に摘出するか、冠状動脈の場合は、患者
の足から切り取つた血管を移植して閉塞した動脈
バイパスを通す。ドクター・Ａ・グロインツイヒ
による最初の進歩した方法以後、今日では適切な
場所にバルーン薬物供給膨張カテーテルを導き、
処置されるべき場所へ血管組織を通す通路を形成
する。バルーンが閉塞した場所に並列に配置さ
れ、薬物供給膨張カテーテルの内腔を通して膨張
液が導かれ、バルーンを膨張させ、ブロツクに抗
して拡張して、閉塞した血管を広げ、あるいは開
く。このような方法は従来の外科的手術よりも外
傷を少なくする。
発明が解決しようとする課題 本発明は、膨張薬物供給膨張カテーテルの構造
に関する評価すべき多数の改良を含んでいる。一
般的に目指していることは、使用される素材の改
良、トルク特性、そしてもちろん、寸法の縮小で
あり、それにより比較的小さな血管を処置でき
る。経皮経腔冠状動脈血管形成外科（PTCA）手
術になお残つている問題は、処置された血管がは
つきりと残らないことが時々あることである。実
際に、おそらく事例の33％が12か月以内に再手術
の必要が生ずる。一定の薬物が、一定のタイプの
狭窄障害の再発を減少させるのに効果があること
が知られている。例えば、順調な筋肉細胞の成長
を阻止する傾向を示す評価のある薬物がある。こ
の性質のせいで、その薬物の注射による投与は好
ましくなく、障害のある場所に血液の流れにより
運ぶことだけが許されている。この理由は、必要
とされる投与薬物の中には、望ましくない副作用
があり得ることである。しかしながら、そして本
発明によれば、該薬物が直接障害場所へ向けられ
るなら、かなり少量の投与で充分であり、副作用
は最少化される。
成形外科又はアテレクトミイ（切除）手術に続
いて、機械的ステントが挿入されて、処置場所に
再狭窄が生じないようにすることも示唆されてい
る。しかしながら、直接の外科的方法以外に効果
的方法がないために、ステントを位置決めする装
置が使用されてきた。冠状動脈の場合には外傷を
生ずす外科的処置により修復（repair）が要求さ
れるため、バルーンを使用する成形外科の利点が
無駄となつている。
課題を解決するための手段 従つて本発明の主たる目的は改良された薬物供
給膨張カテーテルを提供することである。
本発明のその他の目的は、再狭窄を防ぐため
に、液薬その他の物質を直接処置される障害の場
所に投与することを可能とする薬物供給膨張カテ
ーテルを提供することである。
本発明のその他の目的は、処置されるべき閉塞
障害の場所において拡張し膨張する薬物供給膨張
カテーテルを提供し、同時にこれがその場所にあ
るステントを形成して、量を少なくした薬物をプ
ラークに噴霧する薬物供給膨張カテーテルを提供
することである。
更にその他の本発明の目的は、その末端部に一
対の同心的エキスパンダを有し、外側のものが注
入されるべき薬物を供給し、内側のものが膨張と
薬物管理を行うために膨張液を注入する多数内腔
薬物供給膨張カテーテルを提供することである。
本発明の血管内薬物供給膨張カテーテルは３本
の細長い、可撓性の、プラスチツクチユーブを備
え、これらが相互に同心的に配置されている。前
記同心的チユープーの末端部に配置されているの
は、外側及び内側の中空のエキスパンダスリーブ
である。内側エキスパンダスリーブはそれの基部
端で中間チユーブの末端部に接着され、それに対
して前記内側スリーブの末端部は内側チユーブの
末端部に接着されている。いくらか類似の方式
で、前記外側中空エキスパンダスリーブはそれの
基部端で最も外側のチユーブに、それの末端部で
最も内側の末端部に接着されている。この方式
で、前記最も内側のスリーブの内部は中間チユー
ブの内腔に液体連絡し、これに対して前記最も外
側のスリーブの内部が前記最も外側のチユーブの
内腔に連絡している。前記最も外側のスリーブに
は、精密に制御されたレーザービームにより形成
された微細小孔のパターンが設けられている。適
当なマニフオルドが前記３本の同心的に配置され
た薬物供給膨張カテーテルの基部端に連絡され、
膨張液及びその他の液状の物質が前記外側のチユ
ーブ部材の内腔へ入ることを可能としている。こ
の方式で、前記最も内側のスリーブの内圧が増加
すると、それが膨張し、薬物が同時に微細小孔を
通して強制され、処置されるべき場所に薬物その
他の物質が噴霧され、そこを浸潤する。
実施例 図面を参照すると、本発明の好ましい実施例か
らなる、番号１０により表示された血管内薬物供
給膨張カテーテルが表示されている。そこには、
それぞれ番号１２，１４，１６により同定され
た、第１、第２及び第３の同心的又は同軸的に配
置された細長い可撓性プラスチツクチユーブ状部
材が含まれているのが見える。前記３本のチユー
ブは通常は長さ135cmで、最も外側のチユーブ１
２は処置場所の付近の血管組織の部分を容易に通
過する寸法である。この構成は、細長いガイドワ
イヤ１８をおおつて通過するように、ワイヤをお
おつて通過するシステムとして描かれ、前記ガイ
ドワイヤは案内薬物供給膨張カテーテル（図示さ
れていない）を通つて通過し、ガイドワイヤの末
端部が障害のある場所を通つてそのむこうまで通
過するようになされている。
それの末端部２０において最も外側のチユーブ
１２の外側表面に適当に接着されているのは、薄
い膜スリーブの形態の第１エキスパンダ部材即ち
中空の膨張可能な外側スリーブ手段２２である。
スリーブ２２の末端部２４はそれの末端部２６に
おいて最も内側のチユーブ１６の外面に接着され
ている。微小細孔のパターン２８はエキスパンダ
部材２２の壁全体に形成されている。エキスパン
ダ部材２２がポリエチレン・テトラタレード、又
はポリビニル・クロライドのような２軸方向の熱
可塑プラスチツク材料からなるところでは、微小
細孔２８は精密レーザーを使用して形成可能であ
る。
外側エキスパンダ部材又はスリーブ２２の内部
に配置されているのは内側エキスパンダスリーブ
即ち中空の膨張可能な内側スリーブ手段３０であ
る。これはそれの基部端で中間チユーブ１４の外
面に接着されている。それの他（末端）の端は最
も内側のチユーブ１６の外面に接着されている。
図面の部分的断面図から容易に明白となるよう
に、最も外側のチユーブ１２の内腔３２の外側エ
キスパンダ部材２２の内部と液体連絡し、それに
対し中間チユーブの内腔３４は最も内側のエキス
パンダ部材３０の内部と液体連絡している。最も
内側の内腔３６は描かれているようにガイドワイ
ヤのために留保されている。
薬物供給膨張カテーテル組立体の基部端に適切
に取り付けられているのは、それぞれ内腔３２及
び３４に連絡している一対のポート４０及び４２
を有する成形プラスチツクハブ３８である。ポー
ト４０，４２はルラー（Luer）連絡の形状で、
米国特許第4723938号明細書に示されているタイ
プの、シリンジのような膨張道具の取付けを容易
にしている。
ハブ３８の基部端に配置されているのは、ガイ
ドワイヤ１８を調節するために最も内側のチユー
ブの内腔３６に連結されているボア４４である。
ガイドワイヤ１８が除去されると、最も内側のチ
ユーブの内腔３６は処置場所の末端に血液を充満
させるために使用され、下流側の阻血を防ぎ、又
はこれと対照的な媒体（contrast media）を導
入する。別な方法では、最も内側のチユーブ１６
の内腔の処置場所の圧力を測定する通路として、
又は処置プロセスの間に緩むかもしれない組織の
破片を吸収するために使用可能である。薬物供給
膨張カテーテルボデイ１２，１４，１６は現在で
は通常は血管成形及び血管画像薬物供給膨張カテ
ーテルを製造するのに使用されている様々な材料
から製造可能である。通常の材料はPVC、ナイ
ロン、及びポリウレタンである。ガイドワイヤ１
８は特許文献において公知の技術により、ステン
レスから製造可能である。
使用する場合、ガイドワイヤ１８は従来ガイド
薬物供給膨張カテーテル（図示されていない）を
通して通過し、処置されるべき場所を横断する。
それに続いて、最も内側のチユーブ１６が前記ガ
イドワイヤの基部端をおおつて嵌合し、次にエキ
スパンダ部材２２と３０とが処置されるべき場所
に並ぶまで、ガイドワイヤに沿つて前進する。図
面においては、エキスパンダ２２，３０はそれの
膨張した形状で示されているが、それの前進作動
の間、これらエキスパンダはチユーブ状部材１６
の外部に密着して従つていることを理解すべきで
ある。
放射線で見えるマーカーバンド４６の助けを借
りて、一旦前記薬物供給膨張カテーテルの末端部
が適切に位置決めされると、選択された薬物その
他の物質が基部ポート４０を経て導入され、内腔
３２を経て、外側エキスパンタ部材２２の領域へ
入る。薬物の注入により、外側エキスパンダ部材
２２がいくらか膨張するが、通常は薬物物質が注
入される圧力は微小細孔２８を通つて外へ薬物が
大部分排出される圧力よりも低い。物質の供給と
膨張とを同時に実行するために、次にポート４
２、それから内腔３４を経てエキスパンダスリー
ブ３０内部に膨張液が注入される。圧力が増加す
るにつれて、通常は７ないし10気圧に接近し、前
記エキスパンダ部材がそれの所定の最大直径まで
膨張し、そうすることにより、液体物質に強制力
を加えて、特定の薬物その他の物質をポート２８
を経て効率的に処置されるべき場所に噴霧する。
内側スリーブ３０の膨張によつても、障害に対す
る圧力が発生し、薬物その他の物質が供給される
時に血管の壁に力を加える。膨張圧力と薬物の放
出の組み合せにより、処置される血管に対し長期
の開放性を提供する。
同様に当業者に明白なことは、図面に示されて
いる３本の同心的チユーブを使用する代りに、３
本の平行な内腔を有する１本の突出したチユーブ
も膨張と薬物とを提供するために使用可能であ
る。
純粋に例示的であるが、薬物はアスピリン又は
バーサンチンを含み、処置場所での血小板の凝集
を防ぎ、ヘプリン又はプロスタグランジンが凝結
を防ぎ、又はその他の薬物が順調な筋肉細胞の成
長を効率的に妨げる。光硬化性の生体になじむ、
ゼネラル・エレクトリツク社、ドウ・コーニング
社及びその他により提供されるシリコンも考慮の
対象となり、これが本発明の薬物供給膨張カテー
テルを通して注入され、次に直ちに光フアイバー
により供給される。480ナノメータの可視光線に
より硬化され、その場所に固形のチユーブ状ステ
ントを形成する。
本発明は特定の異る装置などにより実行可能で
あり、そのような装置及び作業手順の両方につい
ての様々な改良は、本発明の範囲を逸脱すること
なく可能であることを理解すべきである。
【図面の簡単な説明】
図は本発明による血管内薬物供給膨張カテーテ
ルの断面図を示す。 １０……血管内薬物供給膨張カテーテル、１
２，１４，１６……チユーブ状部材、１８……ガ
イドワイヤ、２０……最も外側のチユーブの末端
部、２２……スリーブ、２４……スリーブの末端
部、２６……最も内側のチユーブの末端部、２８
……微小細孔、３０……エキスパンダスリーブ、
３２，３４，３６……内腔、４０，４２……ポー
ト、４６……マーカーバンド。

Claims (1)

  1. 【特許請求の範囲】 １ 血管内に物質を供給する膨張カテーテルであ
    つて、 (a) 相互に同心的に配置された第１、第２、第３
    の細長い可撓性の中空の漸次減小直径を有する
    プラスチツクチユーブ状部材を備え、それぞれ
    が、基部端と、末端部と、を有し、かつまたそ
    れぞれが、前記基部端と前記末端部との間に延
    びる内腔を形成しており、該第３のチユーブ状
    部材の末端部が第１及び第２のチユーブ状部材
    の末端部を越えて伸長している、第１、第２、
    第３のチユーブ状部材と、 (b) 一端を前記第３のチユーブ状部材の前記末端
    部付近において該第３のチユーブ状部材に接着
    し、他端を前記第２のチユーブ状部材の前記末
    端部に接着し、内部が、第３のチユーブ状部材
    の外側へ第２のチユーブ状部材によつて形成さ
    れた内腔の部分へ流体連絡している中空の膨張
    可能な内側スリーブ手段と、 (c) 一端を前記第３のチユーブ状部材の前記末端
    部付近に接着し、他端を前記第１のチユーブ状
    部材の前記末端部に接着し、内部が、第１及び
    第２のチユーブ状部材間に形成された第１のチ
    ユーブ状部材の内腔の部分へ流体連絡し、かつ
    そこから半径方向に伸長する微細小孔パターン
    を含んでいる中空の膨張可能な外側スリーブ手
    段と、 (d) 前記第１及び第２のチユーブ状部材の前記基
    部端に連絡され、前記第３のチユーブ状部材の
    外側で第２のチユーブ状部材の内腔へ膨張液を
    導入し、かつ前記第２のチユーブ状部材の外側
    で第１のチユーブ状部材の内腔へ液状分散体を
    導入するマニホルド手段であつて、前記膨張液
    によつて前記中空の内側スリーブ手段が膨張す
    る時に、所定量の前記液状分散体が前記外側の
    スリーブ手段にある前記微小細孔を通して散布
    するマニホルド手段と、 から成る血管内に物質を供給する膨張カテーテ
    ル。 ２ 前記第３のチユーブ状部材によつて形成され
    る内腔を通してガイドワイヤが挿入されている請
    求項１に記載の薬物供給膨張カテーテル。 ３ 前記内側及び外側のスリーブ手段が２軸の方
    向性を有する熱可塑性部材から製造されている請
    求項１に記載のカテーテル。 ４ 前記熱可塑性部材がポリエチレンテレフタレ
    ートからなる請求項１に記載のカテーテル。
JP2132444A 1989-05-25 1990-05-22 血管内薬物供給膨張カテーテル Granted JPH037169A (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US356520 1989-05-25
US07/356,520 US4994033A (en) 1989-05-25 1989-05-25 Intravascular drug delivery dilatation catheter

Publications (2)

Publication Number Publication Date
JPH037169A JPH037169A (ja) 1991-01-14
JPH0464709B2 true JPH0464709B2 (ja) 1992-10-15

Family

ID=23401779

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2132444A Granted JPH037169A (ja) 1989-05-25 1990-05-22 血管内薬物供給膨張カテーテル

Country Status (15)

Country Link
US (1) US4994033A (ja)
EP (1) EP0399712B1 (ja)
JP (1) JPH037169A (ja)
KR (1) KR930002271B1 (ja)
AT (1) ATE103499T1 (ja)
AU (1) AU611077B2 (ja)
CA (1) CA2017319C (ja)
DE (2) DE69007674T2 (ja)
DK (1) DK0399712T3 (ja)
ES (1) ES2050370T3 (ja)
FI (1) FI902583A7 (ja)
IE (1) IE63848B1 (ja)
IL (1) IL94439A (ja)
NO (1) NO902292L (ja)
PT (1) PT94150B (ja)

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IL94439A (en) 1995-03-15
DE9005882U1 (de) 1990-11-08
EP0399712A1 (en) 1990-11-28
US4994033A (en) 1991-02-19
NO902292L (no) 1990-11-26
PT94150A (pt) 1991-01-08
KR900017623A (ko) 1990-12-19
EP0399712B1 (en) 1994-03-30
IE63848B1 (en) 1995-06-14
CA2017319C (en) 1995-05-09
DK0399712T3 (da) 1994-05-16
DE69007674D1 (de) 1994-05-05
IL94439A0 (en) 1991-03-10
AU5595690A (en) 1990-12-06
NO902292D0 (no) 1990-05-23
FI902583A0 (fi) 1990-05-24
JPH037169A (ja) 1991-01-14
FI902583A7 (fi) 1990-11-26
CA2017319A1 (en) 1990-11-25
IE901880L (en) 1990-11-25
PT94150B (pt) 1997-01-31
DE69007674T2 (de) 1994-07-14
AU611077B2 (en) 1991-05-30
KR930002271B1 (ko) 1993-03-27
ES2050370T3 (es) 1994-05-16
ATE103499T1 (de) 1994-04-15

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