JPWO2007063820A1 - エレクトロスピニング法により形成された生体適合性のナノ又はマイクロファイバー不織布を有する生体適合材、及びその製造方法 - Google Patents
エレクトロスピニング法により形成された生体適合性のナノ又はマイクロファイバー不織布を有する生体適合材、及びその製造方法 Download PDFInfo
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- JPWO2007063820A1 JPWO2007063820A1 JP2007547935A JP2007547935A JPWO2007063820A1 JP WO2007063820 A1 JPWO2007063820 A1 JP WO2007063820A1 JP 2007547935 A JP2007547935 A JP 2007547935A JP 2007547935 A JP2007547935 A JP 2007547935A JP WO2007063820 A1 JPWO2007063820 A1 JP WO2007063820A1
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- biocompatible material
- nonwoven fabric
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
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- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
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- D01F6/625—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from polyesters derived from hydroxy-carboxylic acids, e.g. lactones
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- D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
- D04H3/02—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of forming fleeces or layers, e.g. reorientation of yarns or filaments
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- D—TEXTILES; PAPER
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- D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
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Abstract
Description
項1.エレクトロスピニング法により形成された生体適合性のナノ又はマイクロファイバー不織布を有する生体適合材。
項2.生体分解性である項1に記載の生体適合材。
項3.組織再生用又は骨再生用である項1又は2に記載の生体適合材。
項4.歯科又は口腔用である項1〜3のいずれかに記載の生体適合材。
項5.幹細胞及び/又は成長因子を含み、組織再生の足場材用である項1又は2に記載の生体適合材。
項6.エレクトロスピニング法により生体適合性のナノ又はマイクロファイバー不織布を形成することを特徴とする生体適合材の製造方法。
項7.生体適合材が生体分解性である項6に記載の製造方法。
項8.生体適合材が組織再生用又は骨再生用である項6又は7に記載の製造方法。
項9.生体適合材が歯科又は口腔用である項6〜8のいずれかに記載の製造方法。
項10.生体適合材が幹細胞及び/又は成長因子を含み、組織再生の足場材用である項6又は7に記載の製造方法。
l−ポリ乳酸(重量平均分子量:約11万)をクロロホルムに溶解し、7重量%溶液とした。この溶液を図1のシリンジに入れて、12kVでエレクトロスピニングを行い、ナノファイバーの不織布を形成した。なお、ノズル先端からターゲットまでの距離は15cmであった。不織布のナノファイバーの平均径は約500nmであり、不織布の厚みは約40μmであった。
d,l−ポリ乳酸−グリコール酸共重合体(組成比10:90)、重量平均分子量:約75万)を1,1,3,3,3−ヘキサフルオロ−2−プロパノールに溶解し、10重量%溶液とした。2kVでエレクトロスピニングを行い、ナノファイバーの不織布を形成した。なお、ノズル先端からターゲットまでの距離は15cmであった。不織布のマイクロファイバーの平均径は約1000nmであり、不織布の厚みは約280μmであった。得られた不織布の顕微鏡写真を図2に示す。
粘度が約500mPa・s(0.5%酢酸)のキトサンを90%酢酸に溶解し、7重量%溶液とした。4kVでエレクトロスピニングを行い、ナノファイバーの不織布を形成した。なお、ノズル先端からターゲットまでの距離は5cmであった。不織布のナノファイバーの平均径は約150nmであった。
ビーグル犬の下顎左右の第4小臼歯を抜歯して、人工的2壁性骨欠損状態とした。このビーグル犬モデルに対して、患部を暴露した後、スケーリング、ルートプレーニングを施した。実施例1で作製したナノファイバー不織布(GTR膜)を滅菌処理した後、歯槽骨や歯根膜が回復する空間を確保できるように患部に適用し、歯肉をもどし吸収性縫合糸で結束した。患部適用1ヶ月、3ヶ月後に病理標本組織を作製し、画像処理により歯周組織形態を経過観察した。あわせて骨密度を軟X線写真にて解析した。患部に適用されたGTR膜の概念図を図3に示す。
d,l−ポリ乳酸−グリコール酸共重合体(組成比75:25、重量平均分子量:約6000)をテトラヒドロフランとN,N−ジメチルホルムアミドの混合液(容積比1:1)に溶解し、5重量%溶液とした。18kVでエレクトロスピニングを行い、ナノファイバーの不織布を形成した。なお、ノズル先端からターゲットまでの距離は20cmであった。本不織布のナノファイバーの平均径は約700nmであった。この不織布に、bFGF(メルク社製)をアミノ酸緩衝液に溶解した0.1重量%溶液を滴下し、凍結乾燥を行い、bFGF含有不織布を製造した。
ビーグル犬の下顎左右の第4小臼歯を抜歯して、人工的2壁性骨欠損状態とした。このビーグル犬モデルに対して、患部を暴露した後、実施例5で製造したbFGF含有不織布で左側欠損部を覆い、FGFを含有しないことを除いてbFGF含有不織布と同様な不織布で右側欠損部を覆った(図4参照)。さらにその上から両方の欠損部を歯肉組織で被覆した。患部適用1ヶ月、3ヶ月後に病理標本組織を作製し、骨密度を軟X線写真にて解析した。患部に適用されたGBR膜の概念図を図4に示す。
Claims (10)
- エレクトロスピニング法により形成された生体適合性のナノ又はマイクロファイバー不織布を有する生体適合材。
- 生体分解性である請求項1に記載の生体適合材。
- 組織再生用又は骨再生用である請求項1又は2に記載の生体適合材。
- 歯科又は口腔用である請求項1〜3のいずれかに記載の生体適合材。
- 幹細胞及び/又は成長因子を含み、組織再生の足場材用である請求項1又は2に記載の生体適合材。
- エレクトロスピニング法により生体適合性のナノ又はマイクロファイバー不織布を形成することを特徴とする生体適合材の製造方法。
- 生体適合材が生体分解性である請求項6に記載の製造方法。
- 生体適合材が組織再生用又は骨再生用である請求項6又は7に記載の製造方法。
- 生体適合材が歯科又は口腔用である請求項6〜8のいずれかに記載の製造方法。
- 生体適合材が幹細胞及び/又は成長因子を含み、組織再生の足場材用である請求項6又は7に記載の製造方法。
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PCT/JP2006/323648 WO2007063820A1 (ja) | 2005-12-02 | 2006-11-28 | エレクトロスピニング法により形成された生体適合性のナノ又はマイクロファイバー不織布を有する生体適合材、及びその製造方法 |
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JP5925185B2 (ja) | 2011-02-28 | 2016-05-25 | サンスター株式会社 | 骨補填材含有不織布 |
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JP6230332B2 (ja) * | 2012-08-21 | 2017-11-15 | サンスター株式会社 | 骨補填材含有不織布 |
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WO2007063820A1 (ja) | 2007-06-07 |
JP5424561B2 (ja) | 2014-02-26 |
ES2787501T3 (es) | 2020-10-16 |
EP1964582A1 (en) | 2008-09-03 |
EP1964582B1 (en) | 2020-03-25 |
CA2630783C (en) | 2015-10-13 |
EP1964582A4 (en) | 2011-01-05 |
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