JP2005513297A - 医療用繊維および織物 - Google Patents
医療用繊維および織物 Download PDFInfo
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- JP2005513297A JP2005513297A JP2003556109A JP2003556109A JP2005513297A JP 2005513297 A JP2005513297 A JP 2005513297A JP 2003556109 A JP2003556109 A JP 2003556109A JP 2003556109 A JP2003556109 A JP 2003556109A JP 2005513297 A JP2005513297 A JP 2005513297A
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Abstract
Description
X−R−Y(I)
の化合物との反応によって結合し、式中、Yはトリメトキシシランなどの遊離基であり、RはC1〜6アルキレン、特にプロピレンなどのC2〜4アルキレンなどの連結基であり、Xはハロ特にクロロなどの反応性官能基である。前記反応は、熱エネルギー、または光エネルギーの適切なインプットによって好適に実施される。
プレスチックでの50MPaから、鋼での2GPaと相当に変化する。織物に使用される材料での値には、40MPa(革)、350MPa(綿および絹)がある。もろい材料では、破壊強度、FSは臨界流によって制御され、Griffith等式;
FS=(2VE/^c)^0.5
によって与えられ、
式中、Eは、ヤング率、2Vは、2つの新たな表面を形成するのに必要とされる破壊エネルギーであり、cは臨界流の大きさである。
E=(120×p^2)GPa
によりヤング率を著しく低下させることを示した。
式中、pは、90%から30%の多孔性に対応して0.1から0.7の範囲にある相対密度である。1GPaという低い値が高多孔性材料において達成できる。
押し出しポリSi繊維の調製およびそれから得られた織物
直径が5〜25ミクロン直径のポリSiミクロワイヤを、「Taylorのミクロワイヤ法」により最初に作製する。ここで、ポリまたは製錬グレードシリコン充填は、局所加熱源によりガラス管内で溶融され、細いワイヤが機械的引張りにより開口部から引き出される。このように製造されたワイヤを、シリカの鞘に入れ、HF基剤処理により除去する。
強化シリコン繊維の調製
例えば、実施例1に記載された通りに調製されたシリコン複合体繊維束を、極めてもろいガラスを非常に頑丈なファイバーグラスに変換させるために用いられる樹脂結合法を用いて、はるかに頑丈な形態に加工できる。ファイバーグラスに使用される樹脂はそれ自体もろいと考えられるが、シリコンと樹脂との間の境界面(ガラス樹脂境界面でのように)は、束でのひび割れ伝播に対して有効な障壁として作用する。
押し出しポリマー/Si粉末繊維の調製
押し出し容易なポリマーを、最初に多孔性シリコン粉末と混合して、適度の温度でまだ繊維に加工できる複合体を形成する。シリコン組み込みレベルは、例えば、生物活性誘導のためには1〜10重量%、降伏強度を向上させるためには10〜60重量%、絶縁ポリマーに電導性を与えるためには60〜90%の間である。ポリ乳酸グリコール酸(PLGA)などの生分解性ポリマーが使用される場合、複合体織物は、生分解性を保持している。Dacron(商標)などの確立された織物材料が使用される場合、pSi粉末の含有物を、工業用配列における追加ステップの1つとして組み込むことができる。ポリアニリンまたはポリアセチレンなどの電導性ポリマーが使用される場合、得られた織物は、生分解性ではないが、低レベルのシリコン添加により表面を生物活性にさせることができると考えられる。
中空非晶質/ポリシリコンミクロ繊維の調製
商品として入手できる、直径が5〜100ミクロン範囲の中空コアを有する直径が20〜200ミクロン範囲のポリマー/シリカ繊維を、非晶質/ポリシリコンによりその長さに沿って最初に被覆する。これは、繊維を真空スパッタリング/CCDチャンバによって引張り、室温/昇温それぞれにおける堆積により達成できる。ポリマーの熱安定性の低さによって、室温で実施できる非晶質薄膜への被覆を限定される。次いで繊維のコアを、好適な溶媒/HF基剤溶液中に浸すことにより除去する。
ミクロ機械加工ポリSi繊維の調製
超細繊維は、表面酸化、ポリSi堆積、ミクロ機械加工およびHF誘導放出に反復的に供される標準的シリコンウェーハの反復使用により実行できる。多孔化は、HF放出ステップの前後のいずれかにおけるステインエッチングにより実施される。最大繊維長は、ウェーハの直径、繊維断面ポリSi層の厚さおよびマスクデザインにより定義される。
前形成繊維へのシリコンの組み込み
商品として入手できるシリコン粉末(製錬グレードまたは太陽光線グレード純度)を、サブミクロン粒径まで機械的に製粉してから、HF基剤溶液中でステインエッチングにより多孔化する。次に多孔性粉末をUVオゾン処理に供して、表面にヒドロキシル基を生成する。次いで3−クロロプロピル(CP)基による置換を、(3−クロロプロピル)トリメトキシシラン(CP−TMS)を用いることにより達成する。次に、綿、亜麻糸、または合成繊維などの商品として入手できる織物に対しプロピルエーテル結合による共有結合は、沸騰トルエン中での共温置により達成される。十分な反応時間後(例えば、110℃で2時間)、物理吸着のpSi粉末を除去するために超音波処理を使用でき、織物表面に結合された共有結合シリコン粉末だけを残す。
前形成紡績糸へのシリコン組み込み
実施例1または5に記載された方法により調製された非多孔性または多孔性シリコン繊維を、既に紡績糸に紡がれた織物繊維の周囲にラップする。これにより、主として標準的織物材料の繊維内に電導経路を提供できる。
絹オルガンザ中のシリコンによる金属置換
絹オルガンザは、インド起源の微細に製織された絹織物であり、これは、金、銀また銅を絹糸に結合し、異方的伝導性である織物にする。この縦糸は、平行な絹糸からなる。この縦糸を通して、横糸が、金属箔へリックスにラップされた絹糸で編まれる。
多孔性シリコン繊維の調製
多孔性シリコン繊維は、フィルタ紙に覆われたガラススライド上でウェーハ上のメソ多孔性薄膜を開裂させることにより得られた。80%多孔度で64ミクロンの厚さの薄膜を、同量の40重量%のHFおよび純粋エタノール中、1平方センチメートル当たり100ミリアンプで20分間の陽極処理により作製された(100)配向p+ウェーハ(0.005±−20%オームcm)から作製された。「ウェーハ平面」に対して平行または垂直方向に沿ってウェーハの背面に線を刻みつけガラススライドの直線端上で切断すると、何本かの短繊維(1〜10mm)がダイスチップから切断された。例を図4に示すが、それは長方形の断面(a)95〜100ミクロン幅(b)25〜30ミクロン幅の繊維の200倍率の光学顕微鏡画像を示している。繊維構造は十分に多孔性(80%多孔度)であり、それらは褐色に見える。図4(c)は、その可撓性を説明するために炭素パッド上で屈曲したより大きな繊維の別の光学顕微鏡画像である。
多孔性シリコン繊維の調製
代わりの方法において、多孔性シリコン繊維は、図5(a)に示されるような鋸切断されたシリコン櫛状構造のエッチングおよび陽極処理により得られた。3インチ直径のウェーハの端に75ミクロン幅の刃を用いて225ミクロンのピッチで一連の45の切断がなされた。これを、約12mmの長さで150×380ミクロンの長方形断面の支持単結晶ビーム配列を創製した。
製織シリコン構造の調製
上記の鋸で切り取りかつエッチングする工程を、より大きな構造を用いて純粋シリコン繊維を製織できることを実証するために使用した。ウェーハの正方形断片を、櫛様構造切り取り、300、200、100ミクロンの厚さに減じて、またより大きな長さでエッチング処理に供した。
Siおよび多孔性Si被覆織物、縫合糸および糸の調製
中央の基質回転台周辺に同心円状に配置した4つの400mm×125mm平面マグネトロンで装備した修飾Blazers Bakボックス内で繊維材料のある範囲をスパッタリングした非晶質シリコンによって被覆した。500wに設定した標的電力、10^−8トルの基礎圧、5×10^〜3トルのアルゴンイオン化大気および50℃の基質温度で5×10^18/cm^3におけるホウ素ドーピングした99.999%純粋なSi標的からのスパッタリングによって被覆を行った。基質は0.0025mm/秒と0.126mm/秒の間の速度で回転させ、従来法で構築された枠組み上に支持して被覆の均一性を向上させ、厚さを制御した。
シリコン含有医療用織物の半導性の例示
図7(a)の製織化純粋シリコン構造物を当量の40%HFおよびエタノール中、陽極電気バイアスの適用により、部分的にメソ多孔性にした。この過程の間および後に多孔性シリコン自体が半導性であることから、前記構造物は、半導性のままであった。
ビーズの可撓性Si鎖の調製
球状多結晶質の直径1〜5mmのSi顆粒は、米国MEMC社からkg量で商品として入手できる。機械的篩い後、これらを例えば、1.0mm直径のサイズに分離する。次にそれぞれに500ミクロン直径孔をあけて、バッチは、ドリル損傷を取り除くために、等方性の化学的エッチングに供する。引き続いて孔を一直線にして、医療用結合繊維に結合されたリードワイヤを用いて糸を通す。部分的多孔化は、相互に連結した球体の鎖を結合させるために電導性Ptワイヤを用いてステインエッチングまたは陽極処理により達成される。
ミクロビーズの可撓性Si鎖の調製
シリコンウェーハを熱的に酸化し、150ミクロン厚さSi膜を酸化物表面に結合させる。次いで線形配列の長方形トレンチを、そのSi被覆物内へ50ミクロンの深さまで深くドライエッチングし、紡績抵抗で内充填する。このステップは、各ビーズの何が中空コアになるかを規定する。
Claims (72)
- 医療用繊維または医療用織物として使用するためのシリコンを含む繊維または織物。
- 前記シリコンが、生物活性シリコンである請求項1に記載の繊維または織物。
- 前記シリコンが、再吸収性シリコンである請求項1に記載の繊維または織物。
- 前記シリコンが、生体適合性である請求項1に記載の繊維または織物。
- 前記繊維または織物が、半導体である請求項1から4のいずれか一項に記載の繊維または織物。
- 前記シリコンが、多孔性シリコンである請求項1から5のいずれか一項に記載の繊維または織物。
- 前記シリコンが、メソ多孔性シリコンである請求項6に記載の繊維または織物。
- 前記織物が、その中に組み込まれたシリコン微粒子を有する請求項1から7のいずれか一項に記載の繊維または織物。
- 前記シリコン微粒子が、織物の繊維に共有結合している請求項8に記載の織物。
- 1種の繊維がシリコンで形成されている請求項1から7のいずれか一項に記載の繊維または織物。
- 1種の繊維が他の材料との複合体を含む請求項1から7のいずれか一項に記載の繊維または織物。
- 前記繊維が、織物に形成される請求項10または請求項11に記載の繊維または織物。
- シリコン含有繊維のみを含む請求項12に記載の織物。
- 前記織物が、シリコン含有繊維以外の繊維を含む請求項12に記載の繊維または織物。
- 織物が、紡糸繊維、刺しゅう繊維、製織繊維、ニット繊維、ブレード繊維、繊維結合繊維、エアレイ繊維、ウェットレイ繊維、および/またはラミネート繊維により得られる請求項12から14のいずれか一項に記載の繊維または織物。
- 織物に組み込まれたシリコン微粒子を有する織物。
- 前記シリコン微粒子が、前記織物に共有結合している請求項16に記載の織物。
- 多孔性または部分多孔性シリコン含有繊維。
- 多孔性シリコン繊維である請求項18に記載の繊維。
- シリコンウェーハ上のメソ多孔性薄膜を機械的に切断することを含む請求項19に記載の繊維を調製する方法。
- シリコン繊維を形成し、その後シリコンを多孔化することを含む請求項19に記載の繊維を調製する方法。
- 前記シリコン繊維が、溶融引張り、レーザ−アシスト化学蒸気堆積(LCVD)、VLS法、犠牲繊維物質被覆または微小機械加工によって形成される請求項21に記載の方法。
- 前記シリコン繊維が、陽極処理またはステインエッチングにより多孔化される請求項21または請求項22に記載の方法。
- 請求項18または請求項19に記載の繊維を含む織物。
- 請求項18または請求項19に記載の紡糸繊維、刺しゅう繊維、製織繊維、ニット繊維、ブレード繊維、繊維結合繊維、エアレイ繊維、ウェットレイ繊維、および/またはラミネート繊維を含む請求項24に記載の織物を調製する方法。
- 長さが少なくとも100cmの実質的に純粋なシリコン繊維。
- 請求項26に記載の繊維を含む織物。
- 前記シリコンが、多孔性シリコンである請求項26に記載の繊維または請求項27に記載の織物。
- 請求項18、請求項19または請求項26に記載の紡糸繊維、刺しゅう繊維、製織繊維、ニット繊維、ブレード繊維、繊維結合繊維、エアレイ繊維、ウェットレイ繊維、および/またはラミネート繊維を含む請求項27に記載の織物を調製する方法。
- 微小繊維をシリコンまたはシリコン複合体により被覆することを含むシリコン含有繊維を製造する方法。
- 前記微小繊維が、生分解性である請求項30に記載の方法。
- 前記微小繊維が、溶解性であり、引き続くステップにおいて、前記微小繊維が、全体的にまたは部分的に溶解されて中空非晶質シリコンまたはシリコン複合体微小繊維を製造する請求項30に記載の方法。
- 前記溶解性微小繊維が、中空である請求項32に記載の方法。
- 前記の得られたシリコン微小繊維が、多孔化される請求項30から33のいずれか一項に記載の方法。
- 前記シリコン含有繊維が、樹脂結合により補強される請求項1から17のいずれか一項に記載の繊維または織物。
- 前記繊維または前記織物に使用される繊維は、直径が50ミクロン未満である請求項1から17のいずれか一項または請求項35に記載の繊維または織物。
- 多孔性コアおよび非多孔性被覆を有するシリコン含有繊維。
- 純粋なシリコン繊維である請求項37に記載の繊維。
- 製織繊維、ニット繊維、刺しゅう繊維、または繊維結合純粋シリコン繊維を含む医療用織物を調製する方法。
- 第1の、および第2のシリコンウェーハを切断してその中に一連の平行切断を形成すること、および生じたシリコン織り糸を、実質的に垂直方向に織り込むことを含むシリコン織物を調製する方法。
- 前記切断繊維を、織り込み前または後にクリーニングおよび/またはエッチングに供する請求項40に記載の方法。
- 前記シリコン織り糸が、織り込み前または後に多孔化される請求項40または請求項41に記載の方法。
- 前記シリコン織り糸が、織り込み後に多孔化される請求項42に記載の方法。
- 繊維をシリコンで被覆することを含むシリコン被覆織物を調製する方法。
- 前記被覆が、スパッタリングまたは連続蒸気堆積により実行される請求項44に記載の方法。
- 前記の生じたシリコン被覆を多孔化する請求項44または請求項45に記載の方法。
- 請求項44から46のいずれか一項に記載の方法により得ることのできるシリコン被覆織物。
- 電導性シリコンまたはシリコン複合体繊維または織物。
- 絹縦糸および低抵抗率のシリコン含有横糸を含む請求項48に記載の繊維または織物。
- 弾力性糸またはワイヤにより一緒に結合されているシリコンビーズを含むシリコン繊維。
- 前記弾力性糸またはワイヤが、生分解性縫合糸である請求項50に記載のシリコン繊維。
- 前記シリコンビーズが、0.5mmから5mmの直径である請求項50または51に記載のシリコン繊維。
- 前記シリコンビーズが、10〜500ミクロンの直径である請求項50または51に記載のシリコン繊維。
- 前記シリコンビーズが、多孔性である請求項50から51のいずれか一項に記載のシリコン繊維。
- シリコン顆粒に孔をあけること、および複数の顆粒内に形成された孔を通して弾力性糸またはワイヤを通すことを含む請求項50、請求項51または請求項52に記載のシリコン繊維を調製する方法。
- 光リソグラフィにより中心に孔を有する複数のビーズを溶解性表面上に形成すること、前記複数のビーズの孔を通して弾力性糸またはワイヤを導入すること、およびその後前記表面を溶解させることを含む請求項50、請求項51または請求項53に記載のシリコン繊維を調製する方法。
- 前記溶解性表面が、シリコンウェーハ上に形成された酸化シリコン面である請求項56に記載の方法。
- 前記複数のビーズが、シリコン膜を前記溶解性表面上に堆積させ、長いトレンチを前記表面内にエッチングすること、さらにシリコン膜を前記表面に塗布すること、次いで前記トレンチに対して垂直かつ平行の双方にチャネルをエッチングすることによって形成される請求項56または請求項57に記載の方法。
- それを必要とする患者にシリコン含有半導性織物を適用すること、および制御されたレベルの電流を前記織物に通すことを含む組織増殖を増大させる方法。
- シリコン含有繊維または織物を含む医療用具。
- 組織工学用足場、整形外科用人工補てつ、ステント、神経界面接続用電極、「ラップ」インビボ薬物送達系、「ラップ」エックスビボ薬物送達系、医療用電気刺激分布ネットワーク、非閉塞性衣類、汗診断用パッチまたは包帯、場合によっては吸収性の包帯、またはX線不透明紡績糸から選択される請求項60に記載の医療用具。
- 実質的に純粋なシリコン紡績糸。
- シリコン含有紡績糸。
- 1つ以上の純粋なシリコン繊維が、織物繊維と編み合わされている請求項63に記載のシリコン含有紡績糸。
- 物質がシリコンから徐々に放出されるように、シリコンを前記物質で含浸させる多孔性シリコンを含む繊維または織物。
- 前記物質が、薬剤化合物または芳香剤である請求項65に記載の繊維または織物。
- 医療用繊維または織物としてのシリコン含有繊維または織物の使用。
- 前記医療用繊維または織物が、医療適用縫合糸、糸、またはメッシュである請求項67に記載の使用。
- 多孔性シリコン含有織物を個人の皮膚に適用し、後で前記シリコン内のポアの内容物を回収することを含む個人から汗を採集する方法。
- 前記織物が、パッチまたは包帯の形態である請求項69に記載の方法。
- 多孔性シリコンが存在する結果、前記織物が半導性であり、織物領域における発汗を促進するために、この領域内の皮膚を局所的に加熱するように、電流が適用される請求項69または請求項70に記載の方法。
- 半導性シリコン含有織物を皮膚に適用し、織物を通して電流を適用することを含む個人の皮膚を局所的に加熱する方法。
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GBGB0130608.3A GB0130608D0 (en) | 2001-12-21 | 2001-12-21 | Medical fibres and fabrics |
PCT/GB2002/005853 WO2003055534A1 (en) | 2001-12-21 | 2002-12-20 | Medical fibres & fabrics |
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JP2008112623A Pending JP2008266876A (ja) | 2001-12-21 | 2008-04-23 | 医療用繊維および織物 |
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JP2008112623A Pending JP2008266876A (ja) | 2001-12-21 | 2008-04-23 | 医療用繊維および織物 |
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US (3) | US7294406B2 (ja) |
EP (2) | EP2075012B1 (ja) |
JP (2) | JP2005513297A (ja) |
KR (1) | KR20040075328A (ja) |
CN (1) | CN100354014C (ja) |
AT (2) | ATE542551T1 (ja) |
AU (2) | AU2002353203A1 (ja) |
DE (1) | DE60231746D1 (ja) |
GB (1) | GB0130608D0 (ja) |
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Also Published As
Publication number | Publication date |
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US20080138602A1 (en) | 2008-06-12 |
WO2003055534A8 (en) | 2003-10-02 |
CN100354014C (zh) | 2007-12-12 |
US7294406B2 (en) | 2007-11-13 |
JP2008266876A (ja) | 2008-11-06 |
AU2008203788A1 (en) | 2008-08-28 |
US20050048859A1 (en) | 2005-03-03 |
CN1652826A (zh) | 2005-08-10 |
EP2075012A1 (en) | 2009-07-01 |
US20080034801A1 (en) | 2008-02-14 |
EP1458422A1 (en) | 2004-09-22 |
HK1079130A1 (en) | 2006-03-31 |
EP2075012B1 (en) | 2012-01-25 |
GB0130608D0 (en) | 2002-02-06 |
KR20040075328A (ko) | 2004-08-27 |
ATE426415T1 (de) | 2009-04-15 |
EP1458422B1 (en) | 2009-03-25 |
AU2002353203A1 (en) | 2003-07-15 |
ATE542551T1 (de) | 2012-02-15 |
DE60231746D1 (de) | 2009-05-07 |
WO2003055534A1 (en) | 2003-07-10 |
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