JP2013542837A - 骨空隙充填剤 - Google Patents
骨空隙充填剤 Download PDFInfo
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- JP2013542837A JP2013542837A JP2013539952A JP2013539952A JP2013542837A JP 2013542837 A JP2013542837 A JP 2013542837A JP 2013539952 A JP2013539952 A JP 2013539952A JP 2013539952 A JP2013539952 A JP 2013539952A JP 2013542837 A JP2013542837 A JP 2013542837A
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- bone
- void filler
- filler composition
- component
- bone void
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Abstract
Description
本発明の分野は一般的に、骨空隙充填剤組成物、骨空隙充填剤組成物の調製、及び例えば骨成長の促進のためへの骨空隙充填剤組成物の使用に関する。
本願は、35U.S.C.§119(e)の下、それぞれ2010年11月15日、及び2011年9月30日に出願した、米国特許出願番号第61/413,502号、及び第61/541,690号の利益を請求し、そしてそれらの内容は参照により本明細書に完全に組み込まれる。
整形外科(例えば、再建、外傷、脊椎及び歯科)の分野においては、疾病、外傷、創傷又は手術により引き起こされ得る骨欠損の効果的修復は長期目標であった。多くの材料及び組成物が考慮され、評価され、又は使用されて来た。骨成長を促進するそれらの能力以上に、それらの材料及び組成物の生物学的、物理的及び機械的特性が、中でも、種々の適用においてそれらの適合性及び性能に影響を及ぼす要因である。
本発明は、骨空隙充填剤組成物、骨空隙充填剤組成物の調製法、及び例えば骨成長の促進のためへの骨空隙充填剤組成物の使用に関する。例えば、1つの例によれば、本発明は、酸性鉱物成分、コラーゲン含有脱灰骨(DMB)を含む骨誘導成分、及び生物学的に許容される骨弾伝導性担体成分を含む骨空隙充填剤組成物を包含する。
筋肉内インプラント評価:
DiCalの添加が移植されるDBM含有組成物下で骨成長を促進するかどうかを決定するために、下記のような種々の試験サンプルを、無胸線ラットに筋肉内移植した。個々のラットに対する手術を次の通りに実施した。手術の前、ラットを、ケタミン/キシラジン溶液(70mg/kgのケタミン及び5mg/kgのキシラジン)の腹腔内注入により麻酔した。全身麻酔は、つま先のピンチへの応答欠如により指摘される。麻酔は、必要とされる場合、イソフルレンにより維持された。
皮下インプラント評価:
種々のシステムを、下記のようにして、無胸腺ラットに皮下移植し、骨成長についてのそれらの有効性に関して組成物を評価した。研究の開始で、生後約7週の雄の無胸腺ラットを用いた。個々のラットに対する手術を、次の通りに実施した。手術の前、ラットを、ケタミン/キシラジン溶液(70mg/kgのケタミン及び5mg/kgのキシラジン)の腹腔内注入により麻酔した。全身麻酔は、つま先のピンチに対する応答の欠如により示された。麻酔は、必要なら、イソフルランにより保持された。
典型的なパテ組成物の調製:
この実施例においては、ゼラチンを、線維状コラーゲン、カルシウム及びリン酸塩源、及びDMB粒子と共に組合し、パテを形成した。脱灰骨マトリックススポンジを、0.18gのコラーゲン、7.3mlの30mMの塩酸、0.21gのリン酸カルシウム二塩基(DiCal)及び1.6gの脱灰骨粒子をスラリーにホイップし、続いてそのスラリーを5cm×2cm×0.5cmのスポンジに凍結乾燥することにより調製した。12%w/vのゼラチン溶液を、1.2gのゼラチンを、約37℃〜約50℃で10mlの水に添加することにより調製した。次に、調製されたスポンジを、水により約10分〜約30分間、ソーキングした。水を吸収した後、スポンジを圧縮し、過剰の水を除去した。次に、1.9mlの12%ゼラチン(約37℃〜約50℃で)を、スポンジに添加し、広げ、そしてヘラを用いてスポンジ共にブレンドした。10分後、その混合物は、パテ様材料になった。このパテ材料は、凝集性且つ可鍛性であり、その形状を保持し、そして水へのソーキングの後、洗い流せなかった(崩壊しなかった)。SEM画像(図13)は、このパテ材料が線維状コラーゲン及び立体的な多孔性構造を有することを示した。
典型的なパテ組成物の調製:
この実施例においては、熱変性されたコラーゲンを、線維状コラーゲン、カルシウム及びリン酸塩源、及びDMB粒子と共に組合し、パテを形成した。DMBスポンジを、0.125gのコラーゲン、5.4mlの30mMの塩酸、0.156gのリン酸カルシウム二塩基(DiCal)及び1.25gの脱灰骨粒子をスラリーにホイップし、続いてそのスラリーを1.2cm×0.3cm×15cmのスポンジに凍結乾燥することにより調製した。0.9%w/v生理食塩水又は水中、12%w/vのコラーゲンを、121℃に1〜2時間、加熱し、コラーゲンを変性し、そしてそのコラーゲンを溶液にした。次に、上記スポンジの1.2cm×0.3cm×4cm部分を、水により10分間ソーキングした。水を吸収した後、スポンジを手動的に圧縮し、過剰の水を除去し、そして次に、0.8mlの12%熱変性されたコラーゲン溶液(約37℃〜約50℃で)を、スポンジに添加し、広げ、そしてヘラを用いてスポンジ共にブレンドした。10分後、その混合物は、パテ様材料になり、このパテ材料は、凝集性且つ可鍛性であり、その形状を保持し、そして水へのソーキングの後、洗い流せなかった(崩壊しなかった)。
典型的なパテ組成物の調製:
この実施例においては、ゼラチン担体が、線維状コラーゲンDMBスポンジに含まれた。スポンジを、0.125gのコラーゲン、0.005gのゼラチン、5.4mlの20mMの塩酸、0.156gのリン酸カルシウム二塩基(DiCal)及び1.25gのDMB粒子をスラリーにホイップし、続いてそのスラリーを1.2cm×1.5cmのスポンジに凍結乾燥することにより調製した。水(中性pH、例えばpH7.0)によるスポンジの再水和化の後、スポンジは柔軟になり、そしてパテ様材料に形成される。このパテを異なった形状に鋳造し、そしてそのパテは水中でその形状を保持できた。
典型的なインプラント形状:
1つの態様によれば、スポンジは、次の寸法を有する棒状物として、脊椎欠損又は損傷に対して使用され得る:約1mm(W)×約2mm(L)×約4〜約5mm(T)、約10mm(W)×約50mm(L)×約4mm〜約5mm(T)又は約2mm(W)×約100mm(L)×約4mm〜約5mm(T)。棒状物についての他の寸法は、約10mm(W)×約20mm(L)×約5mm(T)、約20mm(W)×約50mm(L)×約5mm(T)、又は約20mm(W)×約100mm(L)×約5mm(T)を包含する。1つの態様によれば、スポンジは、約15mm(l)×約5mm〜約6mm(h)のリップを有する、約12mm(W)×約10mm(L)×約8mm〜約10mm(T)の寸法、又は約15mm(l)×約5mm〜約6mm(h)のリップを有する、約12mm(w)×約20mm(L)×約8mm〜約10mm(T)の寸法のストリップとして、脊柱側弯症における欠損のために使用され得る(図14A)。ストリップについての別の寸法は、約15mm(l)×約5mm〜約6mm(h)のリップを有する、約12mm(W)×約100mm(L)×約10mm(T)、又は約15mm(l)×約5mm〜約6mm(h)のリップを有する、約12mm(W)×約200mm(L)×約10mm(T)を包含する。1つの態様によれば、スポンジは、約25mm(W)×約50mm(L)×約10mm(T)の寸法を有する容器として(ここで、容器中の凹面は、約40mm(l)×約15mm(w)×約5mm〜約7mm(h)である)、又は約25mm(W)×約100mm(L)×約10mm(T)の寸法を有する容器として(ここで、2つの凹面を有し、個々の凹面は、約40mm(l)×約15mm(w)×約5mm〜約7mm(h)である)、使用され得る(図14B)。容器についての他の寸法は、次のものを包含する:約25mm(W)×約50mm(L)×約10mm(T)(約15mm(w)×約20mm(l)×約5mm(h)の凹面を有する)、又は約25mm(W)×約100mm(L)×約10mm(T)(約15mm(w)×約40mm(l)×約5mm(h)の凹面を有する)。弾丸形状についての典型的な寸法は、約5.5mm(直径)×約15mm(h)、約7mm(直径)×約20mm(h)、又は約9mm(直径)×約23mm(h)を包含する。下部リッジについての典型的な寸法は、約6mm(w)×約32mm(l)×約12mm(h)及び約3mmのRを包含し、そして上部リッジについての寸法は、約10mm(w)×約30mm(h)×約10mm(h)及び約0.8mm、約1.8mm又は約2.8mmのRを包含する。他の形状のサイズ、例えば寛骨臼又は延髄間領域中への導入のためのそれらの寸法は、当業者により決定され得る。
鉱物成分として酢酸カルシウムを有するインプラントの骨形成活性:
下記に記載されるような種々の試験サンプル(表7)を、無胸腺ラットに皮下移植し、骨成長についてのそれらの効率について組成物を評価した。研究の開始で、生後約7週の雄の無胸腺ラットを用いた。個々のラットに対する手術を、次の通りに実施した。手術の前、ラットを、ケタミン/キシラジン溶液(70mg/kgのケタミン及び5mg/kgのキシラジン)の腹腔内注入により麻酔した。全身麻酔は、つま先のピンチに対する応答の欠如により示された。麻酔は、必要なら、イソフルランにより保持された。
欠損充填に続く融合活性:
ラットの左大腿骨における決定的サイズの欠損(5mm)を、約6mmの長さ×約3mmの直径の円柱状の形での次の4種の組成物(表9を参照のこと)の1つにより充填した:1)本発明の骨空隙充填剤組成物;2)コラーゲン及びBMP−2により形成された組成物;3)コラーゲン及びDBMにより形成された組成物;又は4)Puros(登録商標)DBM。充填された欠損部のX線写真を、充填後4〜8週で取り、そしてマイクロCTスキャンを、充填後8週で取った。
骨空隙充填剤組成物への使用のための生物分解線維:
時間にわたって吸収され、そして良好な品質の骨により置換される、空隙又は骨折の周囲又はその中に導入される材料における耐荷重能力及び従って、構造的完全性を創造するか又は高めるために、生物適合性及び生物分解性線維を、本発明の骨空隙充填剤組成物に添加する。線維の重量百分率は、所望する性質、例えば強度、生物学的性質、取り扱い特性に基づいて変化することができる。1つの態様によれば、線維の重量百分率は、約10%〜約70%であり得る。典型的には、線維長が上昇するにつれて、充填の百分率は、所望する長さを達成するために低下する。
脱灰骨パテインプラントの骨形性活性:
下記に記載されるような種々の試験サンプル(表10)を、無胸腺ラットに皮下移植し、骨成長についてのそれらの効率について組成物を評価した。研究の開始で、生後約7週の雄の無胸腺ラットを用いた。個々のラットに対する手術を、次の通りに実施した。手術の前、ラットを、ケタミン/キシラジン溶液(70mg/kgのケタミン及び5mg/kgのキシラジン)の腹腔内注入により麻酔した。全身麻酔は、つま先のピンチに対する応答の欠如により示された。麻酔は、必要なら、イソフルランにより保持された。
脊椎後外側融合に対する種々の量のリン酸カルシウムの効果:
材料及び方法
処理グループ:動物(雄)を、到着に従って集められた体重に基づいて、処理グループにランダムに分類した(表11)。個々のグループについての平均体重を検計し、グループ平均及び標準偏差値が均質性の仮定を満足することを確かめた。グループ割り当てを研究記録に記録した。個々の動物は、左側及び右側の両側上に同じグループからのインプラントを受けた。
触診評点
0−空
1−いくつかの隆起
2−いくつかのキャップ
3−小さなギャップ
4−完全に連結された
到着に基づいて、生後3ヶ月の合計26匹の雄の無胸腺ラット(Hsd:RH−Foxn1run)(負の対照グループにおけるそれらのラット(2匹の動物)を除く)は、L4とL5との間の左右の後外側溝における試験製品により移植された双方向手術を有した。負の対照グループは、剥離側上にいずれのインプラントも受けなかった。
Claims (34)
- 骨空隙充填剤組成物であって、
カルシウム源、及びリン酸塩又は硫酸塩源、又は低級アルキルカルボン酸塩源を含む酸性鉱物成分;
コラーゲン含有脱灰骨を含む骨誘導成分;及び
コラーゲン材料を含む、立体的な骨再生性(osteoconductive)の生物学的に許容される担体成分を含み;
ここで前記酸性鉱物成分が、酸性鉱物成分又は無機塩、及び前記骨誘導成分及び担体成分の全コラーゲン重量の組合された重量に対して約1重量%〜約60重量%の範囲で存在する、骨空隙充填剤組成物。 - 前記骨空隙充填剤組成物が、スポンジの形で、又は粒状化されたスポンジから得られたペースト又はパテの形で存在する、請求項1記載の骨空隙充填剤組成物。
- 前記骨空隙充填剤組成物が、所望するコンシステンシーのペースト又はパテの形で存在し、前記骨空隙充填剤組成物がさらに、所望するコンシステンシーを得るのに十分な量で液体担体を含む、請求項2記載の骨空隙充填剤組成物。
- 前記液体担体が、i)骨髄穿刺液、全血、血清及び血漿から成る群から選択された体液;ii)水、生理食塩水、緩衝液、及びグリセリン、グリセロール、レシチン、界面活性剤、カルボン酸、ジメチルスルホキシド又はテトラヒドロフランを含む液体から成る群から選択された生物適合性液体;iii)脂肪族ポリエステル、ポリエチレングリコール、ポリ無水物、デキストランポリマー及びポリマー性オルトホスフェートから成る群から選択された天然及び合成ポリマー;及びそれらの組合せから成る群から選択された1又は2以上の液体担体を含む、請求項3記載の骨空隙充填剤組成物。
- 前記骨空隙充填剤組成物が注入できる、請求項1〜4のいずれか1項記載の骨空隙充填剤組成物。
- 前記酸性鉱物成分が、無水リン酸水素カルシウム[CaHPO4]、特に脱水リン酸水素カルシウム[CaHPO4xH2O、式中xは0〜2である]、リン酸水素カルシウム二水和物[CaHPO42H2O](DiCal)、及び/又は酢酸カルシウムを含む、請求項1〜5のいずれか1項記載の骨空隙充填剤組成物。
- 同種チップス、バイオセラミックス、バイオ複合体、DiCal以外のカルシウム塩、DiCal以外のリン酸塩、及びそれらの組合せから成る群から選択された添加剤をさらに含む、請求項6記載の骨空隙充填剤組成物。
- 前記脱灰骨が、粉末、粒状物、顆粒、繊維及びそれらの組合せから選択された形で提供されている、請求項1〜7のいずれか1項記載の骨空隙充填剤組成物。
- 前記骨空隙充填剤組成物が、骨成長因子成分をさらに含む、請求項1〜8のいずれか1項記載の骨空隙充填剤組成物。
- 前記脱灰骨がヒト由来の脱灰骨を含む、請求項1〜9のいずれか1項記載の骨空隙充填剤組成物。
- パテ又はペースであり、そして生物学的に許容されるコラーゲン性担体をさらに含む、請求項1〜10のいずれか1項記載の骨空隙充填剤組成物。
- 前記生物学的に許容されるコラーゲン性担体が、ゼラチン又は熱変性され且つ溶解されたコラーゲンを含む、請求項11記載の骨空隙充填剤組成物。
- 自硬性成分を含む、請求項1記載の骨空隙充填剤組成物。
- 前記自硬性成分が自硬性セメントを含む、請求項13記載の骨空隙充填剤組成物。
- 前記自硬性セメントがリン酸カルシウムセメントである、請求項14記載の骨空隙充填剤組成物。
- 前記リン酸カルシウムセメントがブラッシュ石である、請求項15記載の骨空隙充填剤組成物。
- 前記自硬性成分が生物分解性ポリマーである、請求項13記載の骨空隙充填剤組成物。
- 骨空隙充填剤組成物であって、
カルシウム源、及びリン酸塩又は硫酸塩源、又は低級アルキルカルボン酸塩源を含む酸性鉱物成分;
脱灰骨を含む骨誘導成分;及び
液体担体を含む、生物学的に許容される担体成分を含み;
ここで脱灰骨成分:酸性鉱物成分の比が約0.5:1〜約80:1の範囲であり、
前記骨空隙充填剤組成物が予備混合されたペースト又はパテの形で存在する、骨空隙充填剤組成物。 - 前記液体担体がペーストのコンシステンシーを得るのに十分な量で存在する、請求項18記載の骨空隙充填剤組成物。
- 前記酸性鉱物成分がDiCalを含む、請求項18又は19記載の骨空隙充填剤組成物。
- 前記骨空隙充填剤組成物が骨成長因子成分をさらに含む、請求項18〜20のいずれか1項記載の骨空隙充填剤組成物。
- カルシウム源、及びリン酸塩又は硫酸塩源、又は低級アルキルカルボン酸塩源を含む酸性鉱物成分;
脱灰骨を含む骨誘導成分;及び
生物学的に許容される担体成分を含む骨空隙充填剤組成物を欠損部位に適用することを含んで成る骨成長を助けるための方法。 - 前記生物学的に許容される担体成分が、コラーゲン材料を含む、立体的な骨再生性の生物学的に許容される担体成分を含み;
ここで前記酸性鉱物成分が、酸性鉱物成分又は無機塩、及び前記骨誘導成分及び担体成分の全コラーゲン重量の組合された重量に対して約1重量%〜約60重量%の範囲で存在し;そして
前記骨空隙充填剤組成物が、スポンジの形で、又は粒状化されたスポンジから得られたペースト又はパテの形で存在する、請求項22記載の方法。 - 骨空隙充填剤組成物がスポンジの形で存在し、そして前記方法がさらに、液体担体により前記スポンジを再生和化し、前記再水和化されたスポンジを所望する形状に成形し、そして前記成形された再水和化スポンジを欠損部位に適用することを含んで成る、請求項23記載の方法。
- 前記骨空隙充填剤組成物が、粒状化されたスポンジから得られたペースト又はパテの形で存在する、請求項23記載の方法。
- 前記パテが、前記欠損部位に適用される前、所望する形状に成形される、請求項25記載の方法。
- 前記骨空隙充填剤組成物がペーストの形で存在し、そして前記ペーストがカニューレ装置を通して前記欠損部位に適用される、請求項25記載の方法。
- 前記骨空隙充填剤組成物がスポンジの形で存在し;そして
前記方法が、前記スポンジを液体担体により再水和化し、前記再水和化されたスポンジと生物学的に許容される担体とをペースト又はパテを得るのに十分な量で組合し、そして前記ペースト又はパテを前記欠損部位に適用することをさらに含んで成る、請求項23記載の方法。 - 前記生物学的に許容される担体成分が液体担体を含み;
前記脱灰骨成分;酸性鉱物成分の比が約0.5:1〜約80:1の範囲であり;
前記骨空隙充填剤組成物がペースト又はパテの形で存在し;そして
前記方法が、前記酸性鉱物成分、骨誘導成分及び液体担体を組合し、ペースト又はパテを得、そして前記ペースト又はパテを前記欠損部位に適用することを含んで成る、請求項22記載の方法。 - 前記骨空隙充填剤組成物がパテの形で存在し、そして前記パテが、前記欠損部位に適用される前、所望する形状に形成される、請求項29記載の方法。
- 前記骨空隙充填剤組成物がペーストの形で存在し、そして前記ペーストがカニューレ装置を通して前記欠損部位に適用される、請求項29記載の方法。
- 骨空隙充填剤組成物であって、
カルシウム源及びリン酸塩源を含む酸性鉱物成分を含む立体的組成物;
コラーゲン含有脱灰骨を含む骨誘導成分;及び
コラーゲン材料を含む骨再生性の生物学的に許容される担体
を含み、ここで前記立体的組成物が生物学的に許容される担体と共に混合されて、パテを形成する、骨空隙充填剤組成物。 - カルシウム源、及びリン酸塩又は硫酸塩源、又は低級アルキルカルボン酸塩源を含む酸性鉱物成分;
コラーゲン含有脱灰骨を含む骨誘導成分;及び
コラーゲン材料を含む、立体的な骨再生性の生物学的に許容される担体成分を含む骨空隙充填剤組成物;及びスポンジ、ペースト又はパテを調製するための設明書を含むキット。 - 液体担体を含む生物学的に許容される担体成分をさらに含む、請求項33記載のキット。
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US8613938B2 (en) | 2013-12-24 |
EP2640429B1 (en) | 2016-12-21 |
CA2817584A1 (en) | 2012-05-24 |
AU2011329054A1 (en) | 2013-07-04 |
CA2817584C (en) | 2018-01-02 |
CN103313733A (zh) | 2013-09-18 |
EP2640429A1 (en) | 2013-09-25 |
WO2012068135A1 (en) | 2012-05-24 |
US20120121660A1 (en) | 2012-05-17 |
AU2011329054B2 (en) | 2015-05-28 |
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