JP2014147842A - 薬物含浸容器 - Google Patents
薬物含浸容器 Download PDFInfo
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- JP2014147842A JP2014147842A JP2014102203A JP2014102203A JP2014147842A JP 2014147842 A JP2014147842 A JP 2014147842A JP 2014102203 A JP2014102203 A JP 2014102203A JP 2014102203 A JP2014102203 A JP 2014102203A JP 2014147842 A JP2014147842 A JP 2014147842A
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- sleeve
- sheet
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- implant
- medical implant
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Abstract
【解決手段】医療用インプラントを包容するための薬物含浸スリーブが提供される。このスリーブは、医療用インプラントを受け取るように構成された内部空洞を規定する、生物学的に適合性のある材料でできた本体を含む。この生物学的に適合性のある材料が生物再吸収性である。この本体は、空洞から本体を貫通して延びる穿孔、穴などの複数の開口を含むことができる。このスリーブはさらに、第1の端部と、第2の端部と、再吸収性シートに含浸させた薬物とを含むことができる。そこを通して医療用インプラントを受け取るためにスリーブの第1の端部が開いていてもよく、第2の端部が閉じていてもよい。インプラントをスリーブに包容し、患者に埋め込むことができ、時間の経過とともに、生体内で、そこから、埋込み部位の周囲の組織に薬物が投与される。
【選択図】なし
Description
本発明は、医療用インプラントを受け取るように構成され、適合された改良型の薬物含浸容器(drug−impregnated encasement)に関し、より詳細には、一実施形態では、さまざまなタイプ、サイズおよび形状の整形外科インプラントを包容する働きをする、埋込み部位に薬物を送達するためのスリーブに関する。
インプラント表面における細菌の集落形成はしばしば感染をもたらす。全身性抗生物質は感染の危険を低減させることができるが、全身性予防的抗生物質の存在下であっても、インプラントの表面では依然として感染が起こる。局所抗生物質または他の生物活性作用物質で埋込み部位を処理することは、整形外科医にとって珍しいことではない。あるケースでは、局所抗生物質の貯蔵場所とするために、外科医が抗生物質をPMMA骨セメントと混合する。他のケースでは、より均一で使い勝手のよい解決手段を提供するために、整形外科インプラントに適用させることができる生物再吸収性(bioresorbable)の表面コーティングまたはフィルムが開発された。このコーティングに、薬物またはゲンタマイシンなどの抗生物質を含浸させることができる。このようなコーティングは、脛骨釘または他の釘、プレート、ねじなどのさまざまな整形外科インプラントに適用させることができる。一般に、このようなコーティングは、再吸収性ポリマーから得られ、そのため、薬物が枯渇すると、インプラントは残り、コーティングは溶け出す。
したがって、多種多様なインプラント全般に適合することができ、従来の表面コーティングの制限に対する費用効果の高い解決手段を提供することができる改良型の薬物放出手段が依然として求められている。
例えば、本願発明は以下を提供する。
(項目1)
医療用インプラントを受け取るように構成された内部空洞を規定する、生物学的に適合性のある材料でできた本体であって、上記本体を貫通して上記空洞から延びる複数の開口を含む本体と、
第1の端部と、
第2の端部と、
上記材料に含浸させた薬物と
を含む生物学的に適合性のあるスリーブ。
(項目2)
上記生物学的に適合性のある材料が生物再吸収性である、項目1に記載のスリーブ。
(項目3)
上記第1の端部が、上記第1の端部を通して上記医療用インプラントを受け取るために開いており、上記第2の端部が閉じている、項目2に記載のスリーブ。
(項目4)
細長い形状を有する、項目2に記載のスリーブ。
(項目5)
上面および下面を有し、上記上面または下面の少なくとも一部分が実質的に平面である、項目2に記載のスリーブ。
(項目6)
生物学的に適合性のある材料の少なくとも1枚のシートから製作された、項目2に記載のスリーブ。
(項目7)
第1の縁を含み、上記第1の縁が上記第1の縁を閉じる継目を有し、上記第2の端部が上記第2の端部を閉じる継目を含む、項目6に記載のスリーブ。
(項目8)
上記継目が、熱融合、化学融合および接着からなるグループから選択された方法によって形成された、項目7に記載のスリーブ。
(項目9)
上記再吸収性シートがポリマーを含む、項目2に記載のスリーブ。
(項目10)
上記再吸収性シートがカプロラクトンを含む、項目2に記載のスリーブ。
(項目11)
上記再吸収性シートが、ポリカプロラクトン30%およびポリ乳酸70%から製作された、項目2に記載のスリーブ。
(項目12)
医療用インプラントの一部分を受け取るように構成され、適合されたポケットをそれぞれの端部に含む、項目2に記載のスリーブ。
(項目13)
開いた中心部分を有する、項目2に記載のスリーブ。
(項目14)
上記薬物が、抗生物質、防腐薬、鎮痛薬、抗腫瘍薬、ビスホスホネート、成長因子、ペプチド、スタチンおよびこれらの組合せからなるグループから選択された、項目2に記載のスリーブ。
(項目15)
上記開口が丸い穿孔である、項目2に記載のスリーブ。
(項目16)
上記開口が、丸穴、楕円穴、スリット、スロットおよびこれらの任意の組合せからなるグループから選択された形態を有する、項目2に記載のスリーブ。
(項目17)
一体に積層された少なくとも2枚の再吸収性材料シートから製作された、項目2に記載のスリーブ。
(項目18)
少なくとも1枚のシートがミクロ細孔質である、項目17に記載のスリーブ。
(項目19)
上記少なくとも2枚のシートが異なる薬物を含む、項目17に記載のスリーブ。
(項目20)
上記少なくとも2枚のシートが同じ薬物を含む、項目17に記載のスリーブ。
(項目21)
上記シートが同じ薬物の異なる塩を含む、項目2に記載のスリーブ。
(項目22)
上記シートが2種類の異なる薬物を含む、項目2に記載のスリーブ。
(項目23)
上記スリーブから、患者の体内の医療用インプラントの埋込み部位に、生体内で上記薬物が投与される、項目2に記載のスリーブ。
(項目24)
生物学的に適合性のある材料でできた少なくとも1枚のシートであって、上記シートに含浸させた少なくとも1種類の薬物を含み、上記シートは複数の開口を含み、丸められた縁と、反対側の自由縁と、第1の端部と、上記第1の端部の反対側の第2の端部とを作り出すために折り畳まれたシートと、
上記自由縁および上記第2の端部に沿って形成された継目であって、上記自由縁および第2の端部を閉じる継目と
を含み、
上記第1の端部が、スリーブによって少なくとも部分的に包容されるように医療用インプラントを受け取るよう構成された開口を規定した
薬物含浸スリーブ。
(項目25)
上記シート材料が生物再吸収性である、項目24に記載のスリーブ。
(項目26)
上記開口が丸い穿孔である、項目24に記載のスリーブ。
(項目27)
上記開口が、丸穴、楕円穴、スリット、スロットおよびこれらの任意の組合せからなるグループから選択された形態を有する、項目24に記載のスリーブ。
(項目28)
細長い形状を有する、項目24に記載のスリーブ。
(項目29)
上面および下面を有し、上記上面または下面の少なくとも一部分が実質的に平面である、項目24に記載のスリーブ。
(項目30)
上記継目が、熱融合、化学融合および接着からなるグループから選択された方法によって形成された、項目24に記載のスリーブ。
(項目31)
上記再吸収性シートがカプロラクトンを含む、項目24に記載のスリーブ。
(項目32)
ポリマーを含む、項目24に記載のスリーブ。
(項目33)
一体に積層された少なくとも2枚の再吸収性材料シートから製作された、項目24に記載のスリーブ。
(項目34)
少なくとも1枚のシートがミクロ細孔質である、項目33に記載のスリーブ。
(項目35)
薬物含浸スリーブを形成する方法であって、
少なくとも1種類の薬物が含浸された、生物学的に適合性のある材料の全体に平らな少なくとも1枚の第1のシートを提供すること、
上記シートに複数の開口を形成すること、
丸められた縁と、反対側の自由縁と、第1の開いた端部と、上記第1の端部の反対側の第2の開いた端部とを形成するために、上記シートを折り畳むこと、
上記自由縁を閉じるために上記自由縁に沿って継目を形成すること、および
上記第2の端部を閉じるために上記第2の端部に沿って継目を形成すること
を含み、
上記自由縁に対する上記継目形成ステップと上記第2の端部に対する上記継目形成ステップを任意の順序で実行することができる
方法。
(項目36)
上記開口が丸い穿孔である、項目35に記載のスリーブ。
(項目37)
上記開口が、丸穴、楕円穴、スリット、スロットおよびこれらの任意の組合せからなるグループから選択された形態を有する、項目35に記載のスリーブ。
(項目38)
上記スリーブが細長い形状を有する、項目35に記載のスリーブ。
(項目39)
上記スリーブが上面および下面を有し、上記上面または下面の少なくとも一部分が実質的に平面である、項目35に記載のスリーブ。
(項目40)
上記継目が、熱融合、化学融合および接着からなるグループから選択された方法によって形成された、項目35に記載のスリーブ。
(項目41)
上記再吸収性シートがカプロラクトンを含む、項目35に記載のスリーブ。
(項目42)
上記再吸収性シートが少なくとも1種類のポリマーから形成された、項目35に記載のスリーブ。
(項目43)
上記複数の開口を形成する前に、少なくとも1種類の薬物を含浸させた生物学的に再吸収性の材料の全体に平らな第2のシートを、上記第1のシート上に積層するステップをさらに含む、項目35に記載のスリーブ。
(項目44)
上記生物学的に適合性のある材料が生物再吸収性である、項目35に記載のスリーブ。
次に、本発明が理解されるように、例示のためだけに示される好ましい実施形態を、添付図面を参照して説明する。したがって、それらの好ましい実施形態は参照に便利なように記載されるのであり、本発明は、本明細書に記載された実施形態に限定されない。本発明の範囲は、本明細書に添付された特許請求の範囲によって定義される。
Claims (44)
- 生物学的に適合性のあるスリーブであって、
生物学的に適合性のある再吸収性の材料から作製され、かつ医療用インプラントを受け取るように構成された内部空洞を規定する本体であって、該本体を貫通して該空洞から延びる複数の開口部を規定する、本体と、
該医療用インプラントを受け取るために開くことができる第1の端部と、
該医療用インプラントを保持するために閉じている第2の端部と、
該材料に含浸させた薬物とを備える、生物学的に適合性のあるスリーブ。 - 生物学的に適合性のあるスリーブであって、
生物学的に適合性のある再吸収性の材料のシートであって、医療用インプラントを受け取るように構成された内部空洞を規定するために継目に沿って融合された少なくとも一対の縁を含み、該シートを貫通して該空洞から延びる複数の開口部を規定する、シートと、
該医療用インプラントを受け取るために開くことができる第1の端部と、
第2の端部と、
該材料に含浸させた薬物とを備える、生物学的に適合性のあるスリーブ。 - 前記スリーブが、上面および下面を有し、該上面または下面の少なくとも一部分が実質的に平面である、請求項1または2に記載のスリーブ。
- 前記スリーブが第1の縁を含み、この第1の縁が該第1の縁を閉じる継目を有し、前記第2の端部が該第2の端部を閉じる継目を含む、請求項1または3に記載のスリーブ。
- 前記生物学的に適合性のある再吸収性の材料が、再吸収性シートであり、該再吸収性シートが、ポリマーを含む、請求項1、3、4のいずれか一項に記載のスリーブ。
- 前記スリーブが、前記医療用インプラントの一部分を受け取るように構成され、適合されたポケットをそれぞれの端部に含む、請求項1〜5のいずれか一項に記載のスリーブ。
- 前記薬物が、抗生物質、防腐薬、鎮痛薬、抗腫瘍薬、ビスホスホネート、成長因子、ペプチド、スタチンおよびこれらの組合せからなる群から選択される、請求項1〜6のいずれか一項に記載のスリーブ。
- 前記複数の開口部が、丸い穿孔である、請求項1〜7のいずれか一項に記載のスリーブ。
- 前記複数の開口部が、丸穴、楕円穴、スリット、スロットおよびこれらの任意の組合せからなる群から選択される形態を有する、請求項1〜8のいずれか一項に記載のスリーブ。
- 前記生物学的に適合性のある再吸収性の材料が、一体に積層された少なくとも2枚の再吸収性材料シートを含む、請求項1〜9のいずれか一項に記載のスリーブ。
- 前記少なくとも2枚の再吸収性材料シートのうち少なくとも1枚のシートが、ミクロ細孔質である、請求項10に記載のスリーブ。
- 前記少なくとも2枚の再吸収性材料シートが、異なる薬物を含む、請求項10に記載のスリーブ。
- 前記少なくとも2枚の再吸収性材料シートが、同じ薬物を含む、請求項10に記載のスリーブ。
- 前記医療用インプラントを受け取るように開くことができ、前記第1の端部に面する第3の端部と、
該医療用インプラントを保持するために閉じている第4の端部とをさらに備え、
該第4の端部および前記第2の端部が、該医療用インプラントの一部分を受け取るように構成され、適合されたポケットをそれぞれ形成するように構成される、請求項1〜13のいずれか一項に記載のスリーブ。 - 前記シートが、2つ以上の層を備える、請求項2または5に記載のスリーブ。
- 前記2つ以上の層が、前記薬物を異なる速度で放出するよう構成されている、請求項15に記載のスリーブ。
- 前記2つ以上の層が、インビボで異なる速度で分解するよう構成されている、請求項15に記載のスリーブ。
- 前記シートが、約0.02mm〜約0.5mmの厚さを有する、請求項2または5に記載のスリーブ。
- 前記シートが、約0.04mm〜約0.1mmの厚さを有する、請求項2または5に記載のスリーブ。
- 前記シートが、初期非伸張寸法の約100%まで破壊されることなく伸張し得る、請求項2または5に記載のスリーブ。
- 前記シートが、ポリカプロラクトンを含む、請求項2または5に記載のスリーブ。
- 前記シートが、成形されたシートである、請求項2または5に記載のスリーブ。
- 前記少なくとも2枚の再吸収性材料シートが、前記薬物を異なる速度で放出するよう構成されている、請求項10に記載のスリーブ。
- 前記少なくとも2枚の再吸収性材料シートが、インビボで異なる速度で分解するよう構成されている、請求項10に記載のスリーブ。
- 前記生物学的に適合性のある再吸収性の材料が、約30%のポリカプロラクトンおよび約70%のポリ乳酸を含む、請求項1〜24のいずれか一項に記載のスリーブ。
- 前記複数の開口部が、前記スリーブの全表面積の約10%〜約80%である合わせた開いた面積を有する、請求項1〜25のいずれか一項に記載のスリーブ。
- 前記複数の開口部が、前記スリーブの全表面積の約10%〜約20%である合わせた開いた面積を有する、請求項1〜26のいずれか一項に記載のスリーブ。
- 前記複数の開口部が、前記スリーブの全表面積の約20%である合わせた開いた面積を有する、請求項1〜27のいずれか一項に記載のスリーブ。
- 前記複数の開口部の各々が、少なくとも1.5mmの直径を有する、請求項1〜28のいずれか一項に記載のスリーブ。
- 前記生物学的に適合性のある再吸収性の材料が、前記薬物を前記シートの1つの側面のみから放出するよう構成される、請求項2または5に記載のスリーブ。
- 前記内部空洞が、前記医療用インプラントの形状と相補的である形状を含む、請求項1〜30のいずれか一項に記載のスリーブ。
- 前記医療用インプラントが、整形外科インプラントである、請求項1〜31のいずれか一項に記載のスリーブ。
- 前記整形外科インプラントが、脛骨釘である、請求項32に記載のスリーブ。
- 前記整形外科インプラントが、大腿釘である、請求項32に記載のスリーブ。
- 前記整形外科インプラントが、脊髄インプラントである、請求項32に記載のスリーブ。
- 前記医療用インプラントが、骨固定プレートである、請求項32に記載のスリーブ。
- 前記医療用インプラントが、髄内釘である、請求項32に記載のスリーブ。
- 前記医療用インプラントが、細長い骨プレートである、請求項32に記載のスリーブ。
- 前記医療用インプラントが、コーティングされていないインプラントである、請求項1〜38のいずれか一項に記載のスリーブ。
- 前記継目が、前記第1の端部から前記第2の端部に延びる、請求項2に記載のスリーブ。
- 前記継目が、前記医療用インプラントを保持するために前記第2の端部を閉じる、請求項40に記載のスリーブ。
- 薬物含浸スリーブを形成する方法であって、
少なくとも1つの薬物が含浸された、生物学的に適合性のある材料の全体に平らな少なくとも1つの第1のシートを提供する工程、
該シートに複数の開口部を形成する工程、
丸められた縁と、反対側の自由縁と、第1の開いた端部と、該第1の端部の反対側の第2の開いた端部とを形成するために、該全体に平らな少なくとも1つの第1のシートを折り畳む工程、
該自由縁を閉じるために該自由縁に沿って継目を形成する工程、および
該第2の端部を閉じるために該第2の端部に沿って継目を形成する工程を包含し、
該自由縁および第2の端部に対する、該継目を形成する工程が、任意の順序で実行され得る、方法。 - 前記自由縁に沿った前記継目および前記第2の端部に沿った前記継目が、熱融合、化学融合および接着からなる群から選択される方法によって形成される、請求項42に記載の方法。
- 前記複数の開口部を形成する前に、少なくとも1つの薬物を含浸させた生物学的に再吸収性の材料の全体に平らな第2のシートを、前記全体に平らな少なくとも1つの第1のシート上に積層する工程をさらに包含する、請求項43に記載の方法。
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