JP2017507713A - 医療器具及びその製造方法 - Google Patents
医療器具及びその製造方法 Download PDFInfo
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Abstract
Description
本発明によって、対処される問題は、したがって、先行技術から知られている問題を回避し、そして、特に、傷のシーリングに有用な、医療器具を提供することである。
その分別(fractionation)のため、特に、それらの層(layering)のため、そのような繊維は、器具の多機能の性質を、より以上に発揮する。特に、機能的に区別できる、線維の割合、特に、繊維層を有する、医療器具は、それにより実現される。
少なくとも1つの線維層は、好適には、同様に、器具の外側の表面層、特に、前のセクションに記載されている外側の表面層の反対側の、外側の表面層、を含む。
最初の外側の表面層は、好ましくは、本発明の意味における、少なくとも1つの親水性および/または組織接着性ポリマーを含み、本発明の意味における、合成および生体吸収性ポリマーを含まない、回転紡糸繊維によって形成される。2番目の外側の表面層は、対照的に、好適には、本発明の意味における、少なくとも1つの、合成および生体吸収性ポリマーを含み、本発明の意味における、水性および/または組織接着性ポリマーは含まない、回転紡糸繊維によって形成される。
実施例1:ポリカプロラクトンとアセチル化リン酸架橋デンプン(acetylated distarch phosphate)から、繊維不織布ウェブの製造
実施例2:ポリカプロラクトンとアセチル化リン酸架橋デンプン(acetylated distarch phosphate)から、繊維不織布ウェブの製造
実施例3:ポリカプロラクトンと冷水可溶性澱粉から、繊維不織布ウェブの製造
実施例4:ポリカプロラクトンと冷水可溶性澱粉から、繊維不織布ウェブの製造
実施例5:ポリラクチド−コ−グリコリド(polylactide-co-glycolide)と冷水可溶性澱粉(cold-water-soluble starch)から、繊維不織布ウェブの製造
6gの澱粉(Spezialstarke 6345)と90gのアニソールから、撹拌下、分散液を調製した。この分散液に、24gのポリカプロラクトン(80kDa シグマ−アルドリッチから)を、80℃で、撹拌下、2時間かけて加えた。次に、得られた溶液は、室温にまで冷却すべく、放置した。
混合物は、81gのアニソールとDMSOの9gから調製した。混合物に、6gのデンプンを、撹拌下、加え、分散液を得た。分散液に、その後、24gのポリカプロラクトン(80kDa シグマ−アルドリッチから)を、2時間かけて、80℃で、撹拌下、加えた。得られた溶液は、室温に冷却すべく、放置された。
最初の溶液は、19gの澱粉(Zulkowskyの片栗粉(potato starch) シグマ−アルドリッチから)、1gのプルラン(林原株式会社から USP−NF)および蒸留水30gを、60℃で、1時間、攪拌することにより、製造した。2番目の溶液は、10gのポリカプロラクトンとアニソール40gから、80℃で、2時間攪拌によって、調製した。
実施例9:ポリカプロラクトンのみの、1つの外側表面層と、ポリカプロラクトンと澱粉の反対側の外側表面層を有する、勾配型繊維不織布ウェブの製造
実施例8のように、同じ材料が使用された。
使用したカルボキシメチルセルロースは、Herkulesの7H4XF Blanose(CAS ナンバー:9004−32−4)であった。置換度は(MA 304.1506 Aに関して)、0.65から0.9へ変化し、ナトリウムの割合は、7.0%と8.9%の間であり、硫黄灰の割合は、21.6%と27.9%の間だった。
最初の溶液は、ガラス製のビーカーに、40gのポリビニルピロリドン(Kollidon F90、BASF AG、ドイツ)を導入することによって調整された。その後、160gの水を追加した。混合物は、次いで、24時間、室温で、攪拌され、その後、1時間以上、80℃で加熱された。最後に、溶液は、60℃に冷却される前に、1時間、超音波処理された。
最初の溶液は、ポリビニルアルコール(Mowiol 20‐98;分子量:125 000g/mol)を、蒸留水に、60℃で、撹拌しながら6時間かけて、溶解によって調製された。次いで、溶液は、室温に冷却された。
66重量%のレノビアル(renovhyal)ヒアルロン酸(分子量20kDaと50kDaの間の分子量;Solianceから)と34重量%のクリスタリアル(cristalhyal)ヒアルロン酸(1 000 000g/molと1 400 000g/molの間の分子量;Solianceから)の混合物12gを、88gの水に、室温で、24時間撹拌して、溶解することにより調整された。
Claims (18)
- 特に、少なくとも1つの合成および生体吸収性ポリマー、ならびに、少なくとも1つの親水性および/または組織接着性ポリマーを含む、回転紡糸繊維(rotospun fibers)を含む、不織布の創傷被覆の形態の医療器具。
- 前記器具が、少なくとも1つの合成および生体吸収性ポリマーおよび/または少なくとも、1つの親水性および/または組織接着性ポリマーの相互に異なる割合(mutually different fractions)を含む、回転紡糸繊維を含む、ことを特徴とする、請求項1の医療器具。
- 前記器具が、少なくとも1つの合成および生体吸収性ポリマーおよび/または少なくとも1つの親水性および/または組織接着性ポリマーの繊維割合に関して、相互に相違する、回転紡糸繊維層を含む、ことを特徴とする、請求項1または2の医療器具。
- 前記請求項のいずれかに記載された医療器具であって、前記器具が、少なくとも1つの回転紡糸繊維層を含み、その繊維が、少なくとも1つの親水性および/または組織接着性ポリマーより、より高い、少なくとも1つの合成および生体吸収性ポリマーの割合を含む、ことを特徴とする、医療器具。
- 前記請求項のいずれかに記載された医療器具であって、前記器具は、少なくとも1つの回転紡糸繊維層を含み、その繊維は、少なくとも1つの親水性および/または組織接着性のポリマーより、少なくとも1つの合成および生体吸収性のポリマーの方が少ない割合を含む、ことを特徴とする、医療器具。
- 前記請求項のいずれかに記載された医療器具であって、前記器具は、少なくとも1つの回転紡糸繊維層(rotospun fibrous layer)を含み、その繊維は、少なくとも1つの合成および生体吸収性のポリマーを含むが、少なくとも1つの親水性および/または組織接着性のポリマーを含まないことを特徴とする、医療器具。
- 前記請求項のいずれかに記載された医療器具であって、前記器具は、少なくとも1つの回転紡糸繊維層(rotospun fibrous layer)を含み、その繊維は、少なくとも1つの親水性および/または組織接着性のポリマーを含むが、少なくとも1つの合成および生体吸収性のポリマーを含まないことを特徴とする、医療器具。
- 前記請求項のいずれかに記載された医療器具であって、前記器具が、少なくとも1つの合成および生体吸収性ポリマーに関して、および、少なくとも1つの親水性および/または組織接着性ポリマーに関連して、繊維割合勾配(fiber fraction gradient)を有することを特徴とする、医療器具。
- 前記請求項のいずれかに記載された医療器具であって、繊維における、少なくとも1つの合成および生体吸収性ポリマーおよび/または少なくとも1つの親水性および/または組織接着性ポリマーの割合が、徐々に、前記器具の最初の外側の表面から、2番目の、好適には、前記器具の反対側の外側表面方向の方向に、変化する、ことを特徴とする、医療器具。
- 前記請求項のいずれかに記載された医療器具であって、繊維における、少なくとも1つの合成および生体吸収性ポリマーおよび/または少なくとも1つの親水性および/または組織接着性ポリマーの割合が、徐々に、最初の外側の表面層と2番目の、好適には、前記器具の反対側の外側の表面層の間で、変化することを特徴とする、医療器具。
- 前記請求項のいずれかに記載された医療器具であって.前記器具が、回転紡糸線維層のシーケンスを含み、少なくとも1つの合成および生体吸収性ポリマーおよび/または少なくとも1つの親水性および/または組織接着性ポリマーの繊維割合が、層のシーケンスに沿って、徐々に変化することを特徴とする、医療器具。
- 前記請求項のいずれかに記載された医療器具であって、前記繊維が、少なくとも1つの合成および生体吸収性ポリマーを、個々の繊維の総重量に基づいて、1重量%から99重量%、特に、20重量%から99重量%、好適には、50重量%から99重量%に拡張された割合で、含むことを特徴とする、医療器具。
- 前記請求項のいずれかに記載された医療器具であって、前記繊維が、少なくとも1つの親水性および/または組織接着性ポリマーを、個々の繊維の総重量に基づいて、1重量%から99重量%、特に、1重量%から80重量%、好適には、1重量%から50重量%に拡張された割合で、含むことを特徴とする、医療器具。
- 前記請求項のいずれかに記載された医療器具であって、少なくとも1つの合成および生体吸収性ポリマーが、ポリ乳酸、ポリグリコール酸、ポリε−カプロラクトン、ポリトリメチレンカーボネート、ポリ−3−ヒドロキシ酪酸、ポリ−4−ヒドロキシ酪酸、ポリ−パラ−ジオキサノン、それらの共重合体、それらの誘導体、それらの立体異性体及び、それらの混合物を含む群から選択されることを特徴とする、医療器具。
- 前記請求項のいずれかに記載された医療器具であって、少なくとも1つの親水性および/または組織接着性ポリマーが、ポリアクリル酸、ポリビニルピロリドン、蛋白質、特に、ゼラチン、多糖類、特に、セルロース、ムコ多糖類、それらの共重合体、それらの誘導体、それらの立体異性体及びそれらの混合物を含む群から選択されることを特徴とする、医療器具。。
- 前記請求項のいずれかに記載された医療器具であって、前記繊維は、少なくとも1つの添加物、好適には、可塑剤、充填剤、染料、医薬活性物およびそれらの混合物を含む群から選択されることを特徴とする、医療器具。
- 前記請求項のいずれかに記載された医療器具であって、前記繊維は、特に、水流交絡法(hydroentangling)、加圧(pressing)および/またはカレンダ成形(calendaring)によって、機械的に一体化されたことを特徴とする、医療器具。
- 医療器具の製造方法であって、特に、前記請求項のいずれかに記載の方法であって、その方法は、少なくとも1つの合成および生体吸収性ポリマーならびに、少なくとも1つの親水性および/または組織接着性ポリマーを含む、繊維原料から、繊維を生成するために、回転紡糸を使用することを含む、方法。
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EP3104900A1 (de) | 2016-12-21 |
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US10736985B2 (en) | 2020-08-11 |
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