JP2004130101A - 被覆処理した脈管装置 - Google Patents
被覆処理した脈管装置 Download PDFInfo
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- JP2004130101A JP2004130101A JP2003282055A JP2003282055A JP2004130101A JP 2004130101 A JP2004130101 A JP 2004130101A JP 2003282055 A JP2003282055 A JP 2003282055A JP 2003282055 A JP2003282055 A JP 2003282055A JP 2004130101 A JP2004130101 A JP 2004130101A
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Abstract
【解決手段】 各種の医療装置、特に、各種の移植可能な医療装置は当該医療装置の一定の生体内への導入に対する一定の生物学的な生体反応を最少にするか実質的に無くすために被覆処理できる。これらの医療装置は多数の生体相容性の材料により被覆できる。治療用の各種の薬剤、薬物または配合物を生体相容性の各種の材料と混合して上記医療装置の少なくとも一部分に固定することができる。これらの治療用の薬剤、薬物または配合物はまた上記医療装置の一定の生体内への導入に対する一定の生物学的な生体反応をさらに減少することもできる。種々の材料および被覆処理の方法が上記医療装置の配給および位置決めまで当該医療装置上に上記各種の薬剤、薬物または配合物を保持するために利用できる。
【選択図】 図1
Description
本特許出願は2002年4月30日に出願されている米国特許出願第10/136,569号の一部継続出願である。
本発明は血管の病気の予防および治療のための薬剤/薬剤の組み合わせ物の局所的投与に関連しており、特に、傷害により引き起こされる血管の病気の予防および治療のための薬剤/薬剤の組み合わせ物の局所的配給のための各種の内腔内医療装置および薬剤/薬剤の組み合わせ物を内腔内医療装置上に保持するための方法に関連している。本発明はまた病気を治療および予防して一定の生体に対する上記医療装置の導入に対する一定の生物学的な生体反応を最少にするか実質的に無くすために各種の薬剤、作用薬または配合物が固定されている医療装置にも関連している。加えて、これらの薬剤、作用薬および/または配合物は治癒を促進するために利用できる。
実験例1:
ポリ(フッ化ビニリデン/HFP)の一定のPVDFホモポリマー(テキサス州ヒュートンのソルベイ・アドバンスド・ポリマーズ社(Solvay Advanced Polymers)から入手可能なソレフ(Solef)(登録商標)1008、融点は約175℃)およびポリフルオロ・コポリマーである、それぞれF19NMRにより決定した場合の、92/8重量%および91/9重量%のフッ化ビニリデン/HFP(それぞれ、例えば、テキサス州ヒュートンのソルベイ・アドバンスド・ポリマーズ社(Solvay Advanced Polymers)から入手可能なソレフ(Solef)(登録商標)11010および11008、融点は約159℃および160℃)を各種ステント用の可能性のある被膜として調べた。上記のポリマーはDMAc、N,N−ジメチルホルムアミド(DMF)、ジメチルスルホキシド(DMSO)、N−メチルピロリドン(NMP)、テドラヒドロフラン(THF)およびアセトンを含むがこれらに限らない各種の溶媒中において溶ける。各ポリマー被覆材料を上記の各ポリマーを一定のプライマーとしてアセトン中に5重量%で溶解するか、そのポリマーを一定の上部被膜として50/50DMAc/アセトン中に30重量%で溶解することにより調製した。この場合に、浸漬によりステントに供給して、数時間にわたり空気中において60℃で乾燥した後に、100mmHg(1.33×104 パスカル)以下の一定の真空中において3時間にわたり60℃で乾燥した各種の被膜材料は白い発泡体状のフィルムを生じた。供給時において、これらフィルムはステントに対する接着性が欠けており、剥がれ落ちて、過度に脆いことが分かった。さらに、上記の様式で被覆したステントを175℃を超える温度、すなわち、そのポリマーの融点を超える温度に加熱すると、一定の透明で付着性のフィルムが形成された。それゆえ、高品質のフィルムを達成するためには、各種の被膜は高い温度を、例えば、ポリマーの融点を超える温度を必要とする。上述したように、このような高温の熱処理は大部分の薬剤配合物においてこれらの熱に対する影響の受けやすさにより許容し得ない。
F19NMRで決定した場合に14.5重量%のHFPと重合している85.5重量%のフッ化ビニリデンを含有しているおポリフルオロ・コポリマー(ソレフ(Solef)(登録商標)21508)を評価した。このコポリマーは上記実験例1において記載されているポリフルオロ・ホモポリマーおよびコポリマーよりも結晶性が低い。さらに、このコポリマーは約133℃であると報告されている低い融点も有している。この場合も同様に、約20重量%の上記ポリフルオロ・コポリマーを含む一定の被膜を50/50のDMAc/MEK中における一定のポリマー溶液により供給した。数時間にわたり60℃で(空気中において)乾燥した後に、100mmHg(1.33×104 パスカル)以下の真空中において3時間にわたり60℃で乾燥することにより透明な付着性のフィルムを得た。この方法は高品質のフィルムを達成するための一定の高温の熱処理の必要性を排除している。このようにして得られた被膜は上記実験例1の被膜よりも滑らかであり且つ付着性が高かった。膨張処理を受けた一部の被覆ステントはフィルムが金属から離れるためにある程度の付着性の低下と「テント状化(tenting)」を示した。必要である場合に、上記の各コポリマーを含有している被膜の改質を、例えば、各種可塑剤等をその被膜配合物に添加する等により行なうことができる。このような被膜により調製される各種のフィルムは各種のステント、または、その他の医療装置、特に、これらの装置が各種のステントの程度まで膨張に対する影響を受けにくい場合に、これらを被覆するために使用できる。
上記よりも高いHFP含有量のポリフルオロ・コポリマーを試験した。この系列のポリマーは半結晶質ではなく、エラストマーとして市販されている。一例のこのようなコポリマーはフルオレル(Fluorel)(商標)FC2261Q(ミネソタ州オークデールのダイニオン社(Dyneon)、3M−ホエストエンタープライズの1社(3M-Hoecht Enterprise))、すなわち、フッ化ビニリデン/HFPの60.6/39.4(重量/重量)のコポリマーである。このコポリマーは室温よりも十分に低いTg(ガラス転移点)(このTgは約−20℃)を有しているが、室温または60℃でも粘着性にならない。このポリマーは示差走査熱量計(DSC)または広角X線回折法により測定した場合に、検出可能な結晶質を持たない。上述したようなステント上に形成されるフィルムは非粘着性で、透明であり、ステントの拡張時に問題を生じることなく膨張する。
図3は85.5/14.5のフッ化ビニリデン/HFPのポリフルオロ・コポリマーに関するデータをプロットしたグラフ図であり、上部被膜の無い場合における一定の時間の関数として放出される薬剤のフラクションを示している。また、図4は一定の上部被膜が配置されている同一のポリフルオロ・コポリマーについてのデータをプロットしたグラフ図であり、放出速度に対する最も大きな影響が一定の透明な上部被膜を伴う場合に生じていることを示している。図示のように、TC150は150マイクログラムの上部被膜を有する一定の装置を示しており、TC235は235マイクログラムの上部被膜を示している。上部被膜を備える前の各ステントは30%のラパマイシンを含有している平均で750マイクログラムの被膜を有していた。さらに、図5は60.6/39.4のフッ化ビニリデン/HFPポリフルオロ・コポリマーについてのデータをプロットしたグラフ図であり、一定の時間の関数としての放出される薬剤のフラクションを示しており、一定の上部被膜を伴わない場合の被膜からの放出速度の有意義な調整を示している。すなわち、この放出は薬剤をフィルム中に装填することにより調整されている。
通常の食事をしている9匹のニュージーランド種の白うさぎ(2.5kg乃至3.0kg)に手術の24時間前、さらに手術の直前に、およびこの調査の残りの部分においてアスピリンを与えた。手術時に、各動物体にアセプロマジン(0.1mg/kg乃至0.2mg/kg)をあらかじめ投薬し、一定のケタミン/キシラジン混合物(それぞれ40mg/kgおよび5mg/kg)で麻酔をかけた。さらに、各動物体にヘパリンの1回分の処置間投与量(150IU/kg、静脈内(i.v.))を与えた。
上記のフルオレル(Fluorel)(商標)FC2261Qコポリマーを約10重量%でMEK中に溶解して、14:1のエタノール/水とMEK溶液との溶液比率においてエタノール/水の50/50混合物中において洗浄した。その後、このポリマーは沈澱し、遠心処理によりこの溶剤相から分離した。さらに、このポリマーを再びMEK中に溶解して、洗浄処理を繰り返し行なった。その後、このポリマーを各洗浄工程の後に一晩にわたり一定の真空オーブン(200ミリトル(mtorr)以下)内において60℃で乾燥した。
クロスフレックス(CrossFlex)(登録商標)ステント(コーディス(Cordis)、ジョンソン・アンド・ジョンソン・カンパニー社(Johnson & Johnson Company)の1社から入手可能)を上記の「受け入れられた(as received)」フルオレル(Fluorel)(商標)FC2261QPVDFコポリマーおよび上記実験例6において浄化したポリフルオロ・コポリマーにより、浸漬処理および拭き取り方式を用いて被覆した。その後、これらの被覆したステントをエチレン・オキシドおよび一定の標準的な処理工程により滅菌処理した。さらに、これらの被覆したステントおよび無被覆状態の金属ステント(対照品)をブタの各冠動脈に移植して、これらを28日間その状態に維持した。
(1)前記生体相容性のビヒクルが一定の高分子基材を含む請求項1に記載の一定の生体内への移植のための脈管フィルター。
(2)前記高分子基材がポリ(エチレン−コ−ビニルアセテート)およびポリブチルメタクリレートを含む実施態様(1)に記載の一定の生体内への移植のための脈管フィルター。
(3)前記高分子基材が第1および第2の各層を含み、当該第1の層が前記実質的に管状の本体部分の少なくとも一部分に接触していて、ポリ(エチレン−コ−ビニルアセテート)およびポリブチルメタクリレートの一定の溶液を含み、前記第2の層がポリブチルメタクリレートを含む実施態様(2)に記載の一定の生体内への移植のための脈管フィルター。
(4)前記少なくとも1種類の薬剤が前記第1の層の中に組み込まれている実施態様(3)に記載の一定の生体内への移植のための脈管フィルター。
(5)前記生体相容性のビヒクルがフッ化ビニリデンおよびテトラフルオロエチレンから成る群から選択される第1の部分の重合化残基、および当該第1の部分とは異なり当該第1の部分と共重合することにより一定のポリフルオロ・コポリマーを生成している第2の部分の重合化残基を含む一定のポリフルオロ・コポリマーを含み、前記第1の部分の重合化残基および前記第2の部分の重合化残基の相対的な量が一定の被覆処理した医療装置を所定の最高温度に曝す場合の移植可能な各種の医療装置の被覆処理において使用するために有効な諸特性を伴う生体相容性のビヒクルを生成するために有効であり、さらに、前記ビヒクルが、前記ポリフルオロ・コポリマーが実質的に可溶性である一定の溶媒を含む実施態様(1)に記載の一定の生体内への移植のための脈管フィルター。
(7)前記ポリフルオロ・コポリマーが約50重量%乃至約15重量%の前記第2の部分の重合化残基に対して共重合している約50重量%乃至約85重量%のフッ化ビニリデンの重合化残基を含む実施態様(5)に記載の一定の生体内への移植のための脈管フィルター。
(8)前記コポリマーが約45重量%乃至約35重量%の前記第2の部分の重合化残基に対して共重合している約55重量%乃至約65重量%のフッ化ビニリデンの重合化残基を含む実施態様(5)に記載の一定の生体内への移植のための脈管フィルター。
(9)前記第2の部分がヘキサフルオロプロピレン、テトラフルオロエチレン、フッ化ビニリデン、1−ヒドロペンタフルオロプロピレン、ペルフルオロ(メチルビニルエーテル)、クロロトリフルオロエチレン、ペンタフルオロプロペン、トリフルオロエチレン、ヘキサフルオロアセトンおよびヘキサフルオロイソブチレンから成る群から選択される実施態様(5)に記載の一定の生体内への移植のための脈管フィルター。
(10)前記第2の部分がヘキサフルオロプロピレンである実施態様(5)に記載の一定の生体内への移植のための脈管フィルター。
(12)前記少なくとも1種類の薬剤が一定の抗炎症剤を含む請求項1に記載の一定の生体内への移植のための脈管フィルター。
(13)前記少なくとも1種類の薬剤が一定の抗凝固剤を含む請求項1に記載の一定の生体内への移植のための脈管フィルター。
(14)前記少なくとも1種類の薬剤がラパマイシンを含む請求項1に記載の一定の生体内への移植のための脈管フィルター。
(15)前記少なくとも1種類の薬剤がヘパリンを含む請求項1に記載の一定の生体内への移植のための脈管フィルター。
(17)前記高分子基材がポリ(エチレン−コ−ビニルアセテート)およびポリブチルメタクリレートを含む実施態様(16)に記載の取り外し可能な経皮的脈管フィルター・システム。
(18)前記高分子基材が第1および第2の各層を含み、当該第1の層が前記フィルター少なくとも一部分に接触していて、ポリ(エチレン−コ−ビニルアセテート)およびポリブチルメタクリレートの一定の溶液を含み、前記第2の層がポリブチルメタクリレートを含む実施態様(17)に記載の取り外し可能な経皮的脈管フィルター・システム。
(19)前記少なくとも1種類の薬剤が前記第1の層の中に組み込まれている実施態様(18)に記載の取り外し可能な経皮的脈管フィルター・システム。
(20)前記生体相容性のビヒクルがフッ化ビニリデンおよびテトラフルオロエチレンから成る群から選択される第1の部分の重合化残基、および当該第1の部分とは異なり当該第1の部分と共重合することにより一定のポリフルオロ・コポリマーを生成している第2の部分の重合化残基を含む一定のポリフルオロ・コポリマーを含み、前記第1の部分の重合化残基および前記第2の部分の重合化残基の相対的な量が一定の被覆処理した医療装置を所定の最高温度に曝す場合の移植可能な各種の医療装置の被覆処理において使用するために有効な諸特性を伴う生体相容性のビヒクルを生成するために有効であり、さらに、前記ビヒクルが、前記ポリフルオロ・コポリマーが実質的に可溶性である一定の溶媒を含む実施態様(16)に記載の取り外し可能な経皮的脈管フィルター・システム。
(22)前記ポリフルオロ・コポリマーが約50重量%乃至約15重量%の前記第2の部分の重合化残基に対して共重合している約50重量%乃至約85重量%のフッ化ビニリデンの重合化残基を含む実施態様(20)に記載の取り外し可能な経皮的脈管フィルター・システム。
(23)前記コポリマーが約45重量%乃至約35重量%の前記第2の部分の重合化残基に対して共重合している約55重量%乃至約65重量%のフッ化ビニリデンの重合化残基を含む実施態様(20)に記載の取り外し可能な経皮的脈管フィルター・システム。
(24)前記第2の部分がヘキサフルオロプロピレン、テトラフルオロエチレン、フッ化ビニリデン、1−ヒドロペンタフルオロプロピレン、ペルフルオロ(メチルビニルエーテル)、クロロトリフルオロエチレン、ペンタフルオロプロペン、トリフルオロエチレン、ヘキサフルオロアセトンおよびヘキサフルオロイソブチレンから成る群から選択される実施態様(20)に記載の取り外し可能な経皮的脈管フィルター・システム。
(25)前記第2の部分がヘキサフルオロプロピレンである実施態様(20)に記載の取り外し可能な経皮的脈管フィルター・システム。
(27)前記少なくとも1種類の薬剤が一定の抗炎症剤を含む請求項2に記載の取り外し可能な経皮的脈管フィルター・システム。
(28)前記少なくとも1種類の薬剤が一定の抗凝固剤を含む請求項2に記載の取り外し可能な経皮的脈管フィルター・システム。
(29)前記少なくとも1種類の薬剤がラパマイシンを含む請求項2に記載の取り外し可能な経皮的脈管フィルター・システム。
(30)前記少なくとも1種類の薬剤がヘパリンを含む請求項2に記載の取り外し可能な経皮的脈管フィルター・システム。
(31)前記少なくとも1種類の薬剤がデキサメタゾンを含む請求項2に記載の取り外し可能な経皮的脈管フィルター・システム。
102 帯域部分
104 連結部分
106 貯蔵部分
200 吻合装置
300 (結合)装置
302 縫合糸
400 バルーン
402 潤滑性被膜
500 潤滑性被膜
600 潤滑性被膜
700 プライマー層
800 ステント移植片
802 ステント
804 フープ部材
806,810 支柱部
808 リング部材
812 移植材料
814 プリーツ部分
900 ステント移植片
1000 システム
1002 第1のプロテーゼ
1004,1006 第2のプロテーゼ
1034 シール材料
3000 大静脈フィルター
3002 血管容器
3004 配給カテーテル
3006 押出ワイヤー
3010 基端部
4000 ガイドワイヤー
4002 フィルター
4004 先端部分
4006 フィルター膜
4010 コア
4020 つぶしワイヤー
Claims (2)
- 一定の生体内への移植のための脈管フィルターにおいて、
長手方向に配列されている複数の第1の要素およびこれら複数の第1の要素に対しておよび互いに対して接続している複数の第2の要素により形成されている一定の実質的に管状の本体部分を備えており、これら複数の第2の要素が粒状物質を捕捉するための一定の格子構造を形成しており、さらに
前記実質的に管状の本体部分の少なくとも一部分に固定されている一定の生体相容性のビヒクル、および
一定の病気の状況の治療のために前記生体相容性のビヒクルの中に治療的用量で組み込まれている少なくとも1種類の薬剤を備えている脈管フィルター。 - 血液の継続した灌流を可能にしながら一定の血管内において微視的および巨視的な塞栓物質を遮断するための取り外し可能な経皮的脈管フィルター・システムにおいて、
遠位側端側および近位側端側の各端部を有する一定のガイドワイヤー、
一定の遠位側部分および一定の近位側の自由部分を有する一定の非金属製で多孔質の柔軟なフィルター膜および当該柔軟なフィルター膜の遠位側部分から少なくとも当該柔軟なフィルター膜の近位側部分まで延在している一定のフィルター膜支持構造を有する一定のフィルターを備えており、前記フィルター膜の遠位側部分が前記ガイドワイヤーの遠位側端部の近くにおいて当該ガイドワイヤーに旋回可能に取り付けられており、前記フィルターの近位側の自由端部分がそのつぶれた状態において前記ガイドワイヤーに対して実質的に平行であり、さらに、
前記フィルターに対して操作可能に接続していて、前記フィルター膜の近位側の自由端部分を前記ガイドワイヤーに対して実質的に平行な一定の位置から当該ガイドワイヤーの長手軸から移動した一定の位置まで移動させることにより、前記柔軟なフィルター膜を一定の実質的に円錐形の形状に形成して前記血管の壁部に対して概ね密封状態の関係を形成するための配備手段、
前記フィルターの少なくとも一部分に固定されている一定の生体相容性のビヒクル、および
一定の病気の状況の治療のために前記生体相容性のビヒクルの中に治療的用量で組み込まれている少なくとも1種類の薬剤を備えている脈管フィルター・システム。
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EP (1) | EP1386624B1 (ja) |
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AU (1) | AU2003220715B2 (ja) |
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- 2003-07-29 DE DE60327730T patent/DE60327730D1/de not_active Expired - Lifetime
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- 2003-07-30 MX MXPA03006825A patent/MXPA03006825A/es active IP Right Grant
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EP1386624B1 (en) | 2009-05-27 |
US20030204168A1 (en) | 2003-10-30 |
DE60327730D1 (de) | 2009-07-09 |
EP1386624A1 (en) | 2004-02-04 |
JP4368631B2 (ja) | 2009-11-18 |
CA2436342C (en) | 2011-06-28 |
CA2436342A1 (en) | 2004-01-30 |
AU2003220715A1 (en) | 2004-02-19 |
MXPA03006825A (es) | 2004-09-03 |
ATE432096T1 (de) | 2009-06-15 |
AU2003220715B2 (en) | 2008-01-31 |
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