JP6174535B2 - 薬剤を分散させるための医療器具 - Google Patents
薬剤を分散させるための医療器具 Download PDFInfo
- Publication number
- JP6174535B2 JP6174535B2 JP2014169019A JP2014169019A JP6174535B2 JP 6174535 B2 JP6174535 B2 JP 6174535B2 JP 2014169019 A JP2014169019 A JP 2014169019A JP 2014169019 A JP2014169019 A JP 2014169019A JP 6174535 B2 JP6174535 B2 JP 6174535B2
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- Prior art keywords
- balloon catheter
- balloon
- paclitaxel
- catheter according
- active substance
- 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
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Classifications
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- A61M25/10—Balloon catheters
- A61M25/1002—Balloon catheters characterised by balloon shape
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- A61L—METHODS 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
- A61L27/00—Materials for grafts or prostheses or for coating grafts or prostheses
- A61L27/50—Materials characterised by their function or physical properties, e.g. injectable or lubricating compositions, shape-memory materials, surface modified materials
- A61L27/54—Biologically active materials, e.g. therapeutic substances
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- A61L29/00—Materials for catheters, medical tubing, cannulae, or endoscopes or for coating catheters
- A61L29/08—Materials for coatings
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- A—HUMAN NECESSITIES
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- A61L—METHODS 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
- A61L29/00—Materials for catheters, medical tubing, cannulae, or endoscopes or for coating catheters
- A61L29/08—Materials for coatings
- A61L29/085—Macromolecular materials
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS 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
- A61L29/00—Materials for catheters, medical tubing, cannulae, or endoscopes or for coating catheters
- A61L29/14—Materials characterised by their function or physical properties, e.g. lubricating compositions
- A61L29/16—Biologically active materials, e.g. therapeutic substances
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- A—HUMAN NECESSITIES
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- A61L—METHODS 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
- A61L31/00—Materials 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
- A61L31/08—Materials for coatings
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Description
あらゆる種類の賦形剤を、有効成分より低いか、または高い用量で使用することができる。
外面にゆるく接着される過剰な溶液、またはコーティング溶液からの過剰な物質は、コーティングの効能を損なうことなく簡単な方法で取り除かれることができる。
酢酸エチル中のパクリタキセルによる膨張したバルーン・カテーテルのコーティング
BMT, Oberpfaffenhofen/ Munich, Germany製のバルーン・カテーテル、製品名Joker Lite、バルーン寸法2.5mm×20mmを、最大まで膨らませ、そして酢酸エチル中、1mlあたり18.8mgのパクリタキセル、+1%の医療用オリーブ油中に1分間全長を浸漬し、乾燥させた:パクリタキセル含有量39μg(エタノールによる抽出後、HPLC)。
酢酸エチル中のパクリタキセルによる折り畳まれたバルーン・カテーテルのコーティング
BMT, Oberpfaffenhofen/ Munich, Germany製のバルーン・カテーテル、製品名Joker Lite、バルーン寸法2.5mm×20mmを、折り畳まれた状態で、酢酸エチル中、1mlあたり18.8mgのパクリタキセル、+1%の医療用オリーブ油中に1分間全長を浸漬し、そして乾燥させた:パクリタキセル含有量69μg。
酢酸エチル中のパクリタキセルによる折り畳まれたバルーン・カテーテルのコーティング
a)BMT, Oberpfaffenhofen/ Munich, Germany製のバルーン・カテーテル、製品名Joker Lite、バルーン寸法2.5mm×20mmを、折り畳まれた状態で、酢酸エチル中、1mlあたり16.6mgのパクリタキセル中に1分間全長を浸漬し、そして4時間乾燥させた:パクリタキセル含有量54μg。
b)同じ手順、しかし溶液A(=3.33mlの酢酸エチル+100.0mgのパクリタキセル)中への各々の浸漬後の1時間の乾燥時間を伴い、さらに2回5秒間浸漬した:パクリタキセル含有量126μg。
c)同じ手順、しかし同じ溶液中への各々の浸漬後の1時間の乾燥時間を伴い、さらに4回5秒間浸漬した:パクリタキセル含有量158μg。
アセトン中のパクリタキセルによるバルーン・カテーテルのコーティング
9.0mlのアセトン中に350mgのパクリタキセルを溶かし;BMT, Oberpfaffenhofen/ Munich, Germany製のバルーン・カテーテル、製品名Joker Lite、バルーン寸法2.5mm×20mmを、最大まで膨らませ、1分間全長を浸漬し、そして取り出す。溶剤を室温で12時間乾燥させる。そしてバルーンをしぼませて、PTFEコートした道具を使って共通の方法で折り畳む。場合により、当業者はバルーン上に好適な寸法のステントを圧着することができる:バルーン上に29μgのパクリタキセル。
アセトン中のパクリタキセルによるバルーン・カテーテルのコーティング
a)BMT製の折り畳まれたバルーン・カテーテル、製品名Allegro、バルーン寸法2.5×20mmの、0.15mlのエタノール+4.5μlのUltravist 300(Schering AG, Berlin, Germany製のエックス線造影剤)+1.35mlのアセトン+0.8mgのスダンレッド+30.0mgのパクリタキセルの混合物中への浸漬:
上記カテーテルの折り畳まれたバルーン部分を5回浸漬した、ここで1回目は1分間浸漬し、その後3時間乾燥させる、そして1時間の間隔で4回、各5秒間浸漬する;続いて、ステントを圧着し、そしてエチレンオキサイドを使った共通の方法によりそのカテーテルを殺菌する:パクリタキセル含有量172μg、活性物質の分解物はHPLCでは検出されなかった。
b)飽和したマンニトール水性溶液をUltravist 300の代わりに使用する。
c)飽和したサリチル酸ナトリウム水溶液(pH7.5)をUltravist 300の代わりに使用する。
d)5mgのアセチルサリチル酸を、(5a)に従って完成した溶液に加える。
e)5mgのグリセリンを、(5a)に従って完成した溶液に加える。
血流中における活性物質の接着
12本のBMT製のバルーン・カテーテル、製品名Allegro、バルーン寸法2.5×20mmを使用した。各々6本のカテーテルの折り畳まれたバルーン部分を、[0.15mlのエタノール+4.5μlのUltravist 300+1.35mlのアセトン+0.8mgのスダンレッド+30.0mgパクリタキセル]中、または[1.5mlの酢酸エチル+0.8mgのスダンレッド+31.0mgパクリタキセル]中のいずれかに5回浸漬した、ここで1回目は1分間浸漬し、その後3時間乾燥させる、そして1時間の間隔で4回、各5秒間浸漬する;そして各々のグループの折り畳まれたバルーン3本を、50mlのヒト血液中、37℃で5分間穏やかに動かし、そしてパクリタキセル含有物を測定するために取り出した:血中でインキュベートしなかった3本の対照カテーテルと比較した場合、5分間の血中移動による減少の平均値(1つのコーティング方法あたりn=3)。
アセトン:12%
酢酸エチル:10%
ブタ冠状動脈における血管形成術およびステント挿入術後の再狭窄抑制の試験
3.5×20mmまたは3.0×20mmの、BMT製Joker Lite型の折り畳まれたバルーン・カテーテルを、以下の
溶液A)3.33mlの酢酸エチル(EA)+100.0mgのパクリタキセル、または
溶液B)0.45mlのエタノール+100μlのUltravist370+4.5mlのアセトン(ac)+150.0mgのパクリタキセル、
のいずれかの中に1分間浸漬し、そして室温で一晩乾燥させた。それぞれ、もう1回の(低い用量=L)またはもう4回の(高い用量=H)の浸漬工程を、翌日に1時間の間隔でぴったり5秒間実行した。
活性物質含有量は、平均して溶液(B)中への2回の浸漬後に250μg、溶液(B)中への5回の浸漬後に500μg、溶液(A)において400μgとなった。
パクリタキセルによりコートされたカテーテルか、または未コートのカテーテルを、合計22頭のブタの左前冠状動脈(left anterior coronary artery)または外側冠状動脈(lateral coronary artery)内にステントを移植するために使用して、そしてその血管を組織過形成による再狭窄を刺激するためにわずかに過剰拡張した。前記動物を、5週間後に血管造影により観察し(reangiographed)、そして血管造影図で示された血管狭窄を、自動コンピュータ・プログラムを使って計測した。
血管膨張およびステント挿入術後のカテーテルの活性物質含有量
ステント挿入術及び動物からの除去の後に、長さ約3cmの実施例8のバルーンを、バルーン・カテーテルから切り離し、そして1.5mlのエタノール中に移した。HPLCを使ってパクリタキセル含有量を測定した。全ての入手可能なコート・バルーンと抽出した非コート・バルーンを試験した。
プロブコールを、1mlにつき100mgの濃度でアセトンに加える;その溶液を、先の実施例に記載のとおりバルーン・カテーテルをコートするために使用する。
ラパマイシンを、ジエチルエーテル中に10mg/mlの濃度で溶かす。先の実施例で記載のとおりカテーテルのバルーン部分をコートし;コーティング溶液から取り出した後に、バルーンを水平にし、そしてできる限りすぐにそれらの縦軸に回転させ続けなくてはならない。
エポシロンBを、2mg/mlの濃度で酢酸エチル中に溶かし;その溶液を先の実施例の記載のとおりバルーン・カテーテルをコートするために使用する。
Claims (12)
- 特定の病変組織又は臓器部分の選択的な治療のために、活性物質を放出するバルーンカテーテルであって、
活性物質がパクリタキセルを含んでなるとともに、
バルーンの折り目によって覆われるバルーン表面の領域のみに、適用後乾燥させたパクリタキセルが乾燥固体として、最大5μg/mm2の投与量となるよう付着されてなり、且つ、
組織との接触後に活性物質が直ちに放出される、バルーンカテーテル。 - バルーンカテーテルの材料が、ポリアミド、ポリアミド混合物およびコポリマー、ポリエチレンテレフタレート、ポリエチレンおよびコポリマー、ポリウレタン、天然ゴム、並びにその誘導体から選択される、請求項1記載のバルーンカテーテル。
- パクリタキセルの粒径が5μm未満である、請求項1又は2記載のバルーンカテーテル。
- パクリタキセルがアモルファス粒子の形態で存在する、請求項1〜3の何れか1項記載のバルーンカテーテル。
- 組織との短期接触に使用される請求項1〜4の何れか1項記載のバルーンカテーテル。
- 冠状動脈拡張に使用される、請求項1〜5の何れか1項記載のバルーンカテーテル。
- バルーンの直径が2〜4mm、長さが1.0〜4.0cmである、請求項6記載のバルーンカテーテル。
- ステントと結合される、請求項1〜7の何れか1項記載のバルーンカテーテル。
- 血管壁の過剰増殖の低減に使用される、請求項1〜8の何れか1項記載のバルーンカテーテル。
- バルーンカテーテルの膨張によって誘発される血管壁の過剰増殖の低減に使用される、請求項9記載のバルーンカテーテル。
- ステントが存在する領域の血管壁の過剰増殖の低減に使用される、請求項9又は10記載のバルーンカテーテル。
- ステントが移植できない血管の血管壁の過剰増殖の低減に使用される、請求項9又は10記載のバルーンカテーテル。
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Application Number | Priority Date | Filing Date | Title |
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DE2002144847 DE10244847A1 (de) | 2002-09-20 | 2002-09-20 | Medizinische Vorrichtung zur Arzneimittelabgabe |
DE10244847.7 | 2002-09-20 |
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