JP5582702B2 - 合成骨移植片代用セメントおよびそれから製造された製品 - Google Patents
合成骨移植片代用セメントおよびそれから製造された製品 Download PDFInfo
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- JP5582702B2 JP5582702B2 JP2008530197A JP2008530197A JP5582702B2 JP 5582702 B2 JP5582702 B2 JP 5582702B2 JP 2008530197 A JP2008530197 A JP 2008530197A JP 2008530197 A JP2008530197 A JP 2008530197A JP 5582702 B2 JP5582702 B2 JP 5582702B2
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- Prior art keywords
- powder
- particulate composition
- calcium sulfate
- bone graft
- graft substitute
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000000843 powder Substances 0.000 claims description 219
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- QORWJWZARLRLPR-UHFFFAOYSA-H tricalcium bis(phosphate) Chemical compound [Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O QORWJWZARLRLPR-UHFFFAOYSA-H 0.000 claims description 138
- 239000002245 particle Substances 0.000 claims description 106
- 239000000463 material Substances 0.000 claims description 90
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 claims description 76
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- AEMRFAOFKBGASW-UHFFFAOYSA-N Glycolic acid Chemical compound OCC(O)=O AEMRFAOFKBGASW-UHFFFAOYSA-N 0.000 claims description 55
- ZOMBKNNSYQHRCA-UHFFFAOYSA-J calcium sulfate hemihydrate Chemical compound O.[Ca+2].[Ca+2].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O ZOMBKNNSYQHRCA-UHFFFAOYSA-J 0.000 claims description 48
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- 239000010409 thin film Substances 0.000 description 1
- 239000003634 thrombocyte concentrate Substances 0.000 description 1
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- 229950003937 tolonium Drugs 0.000 description 1
- HNONEKILPDHFOL-UHFFFAOYSA-M tolonium chloride Chemical compound [Cl-].C1=C(C)C(N)=CC2=[S+]C3=CC(N(C)C)=CC=C3N=C21 HNONEKILPDHFOL-UHFFFAOYSA-M 0.000 description 1
- KVSKGMLNBAPGKH-UHFFFAOYSA-N tribromosalicylanilide Chemical compound OC1=C(Br)C=C(Br)C=C1C(=O)NC1=CC=C(Br)C=C1 KVSKGMLNBAPGKH-UHFFFAOYSA-N 0.000 description 1
- 229910000391 tricalcium phosphate Inorganic materials 0.000 description 1
- 229940078499 tricalcium phosphate Drugs 0.000 description 1
- ICUTUKXCWQYESQ-UHFFFAOYSA-N triclocarban Chemical compound C1=CC(Cl)=CC=C1NC(=O)NC1=CC=C(Cl)C(Cl)=C1 ICUTUKXCWQYESQ-UHFFFAOYSA-N 0.000 description 1
- 229960003962 trifluridine Drugs 0.000 description 1
- VSQQQLOSPVPRAZ-RRKCRQDMSA-N trifluridine Chemical compound C1[C@H](O)[C@@H](CO)O[C@H]1N1C(=O)NC(=O)C(C(F)(F)F)=C1 VSQQQLOSPVPRAZ-RRKCRQDMSA-N 0.000 description 1
- 229940035893 uracil Drugs 0.000 description 1
- 229960003165 vancomycin Drugs 0.000 description 1
- MYPYJXKWCTUITO-UHFFFAOYSA-N vancomycin Natural products O1C(C(=C2)Cl)=CC=C2C(O)C(C(NC(C2=CC(O)=CC(O)=C2C=2C(O)=CC=C3C=2)C(O)=O)=O)NC(=O)C3NC(=O)C2NC(=O)C(CC(N)=O)NC(=O)C(NC(=O)C(CC(C)C)NC)C(O)C(C=C3Cl)=CC=C3OC3=CC2=CC1=C3OC1OC(CO)C(O)C(O)C1OC1CC(C)(N)C(O)C(C)O1 MYPYJXKWCTUITO-UHFFFAOYSA-N 0.000 description 1
- MYPYJXKWCTUITO-LYRMYLQWSA-O vancomycin(1+) Chemical compound O([C@@H]1[C@@H](O)[C@H](O)[C@@H](CO)O[C@H]1OC1=C2C=C3C=C1OC1=CC=C(C=C1Cl)[C@@H](O)[C@H](C(N[C@@H](CC(N)=O)C(=O)N[C@H]3C(=O)N[C@H]1C(=O)N[C@H](C(N[C@@H](C3=CC(O)=CC(O)=C3C=3C(O)=CC=C1C=3)C([O-])=O)=O)[C@H](O)C1=CC=C(C(=C1)Cl)O2)=O)NC(=O)[C@@H](CC(C)C)[NH2+]C)[C@H]1C[C@](C)([NH3+])[C@H](O)[C@H](C)O1 MYPYJXKWCTUITO-LYRMYLQWSA-O 0.000 description 1
- 229960003636 vidarabine Drugs 0.000 description 1
- 210000000605 viral structure Anatomy 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
- 210000000707 wrist Anatomy 0.000 description 1
- 229960002555 zidovudine Drugs 0.000 description 1
- HBOMLICNUCNMMY-XLPZGREQSA-N zidovudine Chemical compound O=C1NC(=O)C(C)=CN1[C@@H]1O[C@H](CO)[C@@H](N=[N+]=[N-])C1 HBOMLICNUCNMMY-XLPZGREQSA-N 0.000 description 1
- 229940102001 zinc bromide Drugs 0.000 description 1
- 239000011592 zinc chloride Substances 0.000 description 1
- 235000005074 zinc chloride Nutrition 0.000 description 1
- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical compound [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 description 1
- 229960001763 zinc sulfate Drugs 0.000 description 1
- 229910000368 zinc sulfate Inorganic materials 0.000 description 1
Images
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- A—HUMAN NECESSITIES
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- A61L27/00—Materials for grafts or prostheses or for coating grafts or prostheses
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- A—HUMAN NECESSITIES
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- A61L27/00—Materials for grafts or prostheses or for coating grafts or prostheses
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- A61L27/00—Materials for grafts or prostheses or for coating grafts or prostheses
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Description
かくして、一般的な用語で本発明を説明してきたが、ここで、添付の図面を参照する(図面の簡単な説明については別節を参照)。
実施例1は、本発明の骨移植片代用セメントのin vivoでの使用を例示するものであり、特に、本発明の組成物により示される吸収速度の低下(硫酸カルシウム組成物と比較する)、良好な機械的特性、および許容可能な固化時間を説明する。実施例2は、本発明の組成物の実施形態が、従来のCaSO4ペレットの使用と比較して、修復された骨の量、強度、および堅さを増加させる能力を説明する。実施例3は、溶液中のグリコール酸に対するγ照射の分解効果および骨移植片代用セメントの固化時間に対するそのような分解の効果を証明する。実施例4は、粒子状組成物におけるグリコール酸塩形態の置換が、特定の取り扱い特性および機械的強度特性などの他の有利な特性を犠牲にすることなく、骨移植片代用セメントの性能に対する照射の効果を減少させることを証明する。
全てASTM C-472あたり、直径1 mm、5 cmの長さであり、総重量300 gを有し、参照によりその全体が本明細書に組み入れられるものとするVicat針を用いて、固化時間を測定することができる。試験するサンプルを、均一で流動可能なペーストが作製されるような様式で混合するべきである。Vicat針滴定試験のためのサンプルの大きさは、約3 cc〜約5 ccの材料であり、約20 mLのポリエチレンカップ中のケーキにタッピングする;水溶液がVicat針の滴定および除去以外の粒子状組成物に接触した1分後に、材料に対して攪拌を与えないように、サンプルを取り扱うべきである。このカップは、ケーキが、約1/4〜3/8の高さを測定する短く平らなシリンダーであるような寸法のものであるべきである。
前記材料の圧縮強度を、以下の試験方法を介して決定する。8個の標本を許容するステンレススチール製割型を用いて、ASTM F451(外側直径6 mm x長さ12 mm)(参照によりその全体が本明細書に組み入れられるものとする)あたりのサイズに標本を成形する。
以下の試験方法を介して、直径張力強度を決定する。約5/8インチ(15.8 mm)の外側直径円筒状間隙および側部除去のための切り込みを有する10 lb/ft3のクローズドセルポリウレタンフォーム(General Plastic Manufacturing Company, Tacoma, WA社製Last-A-Foam(登録商標)として入手可能)の1キューブを、標本成型として用いる。約5/8インチの外側直径円筒状間隙を、5/8インチのドリルビットを用いてトリルプレスを1回押し下げて、キューブの反対の面を通して垂直にドリルで穴を開けることにより作製する。間隙はキューブの長さ全体に走り、両方の反対のドリルで開けた面が、ドリルからそれらの中に作製された丸い間隙と同じ中心を共有するように中心にする。残りの4個の完全な側面とは反対の2個の側面を、最終的な標本の開いた側面になるように設計する;これらの側面を、切り込みを介して除去することができる。これらの側面に、側面1個あたり2個の切り込みとなるように、試験の直前に除去することができ、サンプルの完全性に影響しないように切り込みを入れる。切り込みはキューブの長さ全体に走り、除去の際に50%を超える高さの標本が曝露される様式で分離すべきである。一般的には、直立式帯のこぎりを用いて、切り込みを作製する。図2a〜2cは、直径張力試験型20の例を示す。図2aは、型20の上端部および底部を示す。図2bは、型20の側面図を示す。図2cは、型20の前面図および後面図を示し、その中の16 mmの外側直径円筒状間隙30を示す。
材料の分解速度を、以下の方法を介して決定する。標本を、4.8 mmの外側直径および3.3 mmの高さのシリンダーの大きさのシリコン型に成形する。円筒状間隙を含むシリコンの3.3 mmの厚さのシートを、型として用いる。円筒状の間隙は外側直径が4.8 mmであり、高さが3.3 mmであり、間隙の丸い面が平行であり、シリコンシートの表面と同じ平面中にあるような向きにある。
新しい骨成長および本発明の骨移植片セメントの残留材料の直径張力強度、分解特性、およびin vivoでの評価を、市販の硫酸カルシウム材料と比較した。全ての実験のための実験群は、74.906重量%の硫酸カルシウム半水化物、0.094重量%の反応促進剤(スクロースでコーティングされた硫酸カルシウム二水和物)、6.7重量%のリン酸一カルシウム一水和物、8.3重量%のリン酸β-トリカルシウム粉末、10重量%のリン酸β-トリカルシウム顆粒、および10規定水酸化ナトリウム溶液で7.00のpHに中和した0.6 Mグリコール酸の水溶液からなるセメントを含む本発明の実施形態であった(以後「SR」と呼ぶ)。MIIG(登録商標)X3 Bone Graft Substitute(以後「X3」と呼ぶ)(Wright Medical, Arlington, TN)硫酸カルシウムを、全ての実験の対照として用いた。SR材料は、14〜19分以内に固化するように製剤化したが、X3材料は7〜10分以内に固化するように製剤化した。
図3は、DTSの結果を示す。一方向ANOVAを、JMPソフトウェア(SAS, Cary, NC)を用いて実施した。空気中で硬化したSRについては1時間と24時間の硬化時間の間で有意な差異が認められたが(p<0.001)、X3については差異は認められなかった(p=0.508)。SR反応は1時間で不完全であるが、X3固化時間は本質的に完全であることが空気により硬化したデータから明らかである。この結果は、固化時間の差異に基づいて予想されたものであった。
材料および方法:
IACUCに認可されたプロトコルの下で、10匹の骨格が成熟した、オスのイヌ(25〜32 kg)は、上腕骨近位で左右対称に作製された、臨界サイズの、軸方向の延髄の欠損(13 mm直径 X 50 mm)を有し、13週間(n=5)および26週間(n=5)試験した。一方の上腕骨中の欠損に、6 ccの試験材料(実施例1に記載のSRセメント)を注入した。反対側の上腕骨中の同一の欠損は、等量のCaSO4ペレット(OSTEOSET(登録商標)ペレット、Wright Medical)を受容した。0、2、6、13および26週でラジオグラフを取得した。横軸の、脱灰されていない骨の染色切片を調製した。欠損中の新しい骨および埋め込まれた残存材料の面積画分を、標準的な点計測技術を用いて定量した。中間レベルの各欠損から芯を取った8 mm直径 X 20 mm試験シリンダーの降伏強度および係数を、一軸圧縮試験において0.5 mm/分のクロスヘッド速度で決定した。組織形態形成データおよび生体力学データを、FriedmanおよびMann-Whitney検定を用いて分析した。データを、平均および標準偏差として提供する。
臨床ラジオグラフおよび検視ラジオグラフにより、骨移植片代用物の顕著に異なる吸収速度および欠損中の骨との置換が示された。CaSO4ペレットの吸収は、見かけは2週で開始し、実質的に6週までに完了した。SRセメントについては吸収がより遅く、これも2週で開始したが、いくつかのセメントは26週でも持続した。
様々な吸収速度を有するいくつかのカルシウムに基づく材料をうまく混合して、調整された、より遅い吸収プロフィールを有するセメントを製造した。このセメントにおいては、硫酸カルシウムおよびリン酸二カルシウム二水和物マトリックスの大部分は、素早く吸収され、セメントのボーラス中で深く骨形成を促進するが、分布したβ-TCP顆粒は、足場を提供し、新しい骨に取り込まれた後、ゆっくり吸収される。設計されたセメントは、13週および26週後に従来のCaSO4ペレットと比較した場合、修復された骨の量、強度および堅さを増加させた。このセメントは、強力で注入可能で高度に生体適合性の骨移植片代用物が有利である場合、臨床適用にとって有望である。
材料および方法:
250 mLの混合溶液、水酸化ナトリウムで中和した0.6 Mグリコール酸を作製し、補正されたpHメーターを用いてpHを注記した。結晶性グリコール酸(Alfa Aesar Part # A12511; Ward Hill, MA)、10 N水酸化ナトリウム溶液(EMD Chemicals Part # SX0607N-6; Darmstadt, Germany)、および洗浄用のUSP水(Baxter Healthcare Corporation Part # 2F7112; Deerfield, IL)を用いて、この溶液を作製した。
pHドリフトが、全ての溶液について認められた。結果は、群内で一致していたが、2回滅菌された溶液は対照および1回滅菌群のものとは異なるpHをもたらした。特に、2回滅菌溶液は、約6.3の平均pHをもたらしたが、他の溶液群は約5.5のpHを示した。
2回滅菌溶液群におけるpHおよび固化時間シフトは、γ照射滅菌を介する中和したグリコール酸溶液の分解を示す。その効果は1回滅菌溶液においては断言できないが、照射分解が付加的プロセスであるため、その群において分解が起こったに違いない。
材料および方法:
最初に、0.6 M水酸化ナトリウム(NaOH)の保存溶液を用いて、材料の酸-塩基滴定曲線に対する結晶性グリコール酸(GA)のγ滅菌の効果を試験した。次いで、物理的特性比較を、前駆体粉末中で混合した固体グリコール酸ナトリウム(Na-GA)を含むセメント粉末の照射滅菌サンプルと、非照射材料との間で行った。各配置からの固化セメントの直径張力強度、注入力、Vicat固化時間、および形態学的(SEM)比較を行った。さらに、Vicat固化時間比較を、各生成物配置の非滅菌サンプル間で行った。
Vicat固化時間の結果は、配置2が少量によってVicat固化時間をシフトさせたことを示していた。2つの配置内のNa-GAの位置以外に、唯一の他の変数は、配置2のキットが照射されたが、配置1の材料は照射されなかったことである。これらの2つの変数を扱うために、各配置の2つのさらなるサンプルのVicat固化時間を取得したが、配置2のサンプルを滅菌に供しなかった。
2つの生成物配置の間では、DTS、分解、および注入力値の間で統計学的な有意差は観察されなかった。照射された配置2のデータを評価する場合(p値=0.04)、Vicat固化時間における統計学的差異が観察されたが、滅菌されていない配置2のデータを用いて分析を行う場合(p値=0.59)は差異は認められなかった。第2のVicat固化時間比較が有意差をもたらし、同様にNa-GAの再配置が原因である場合、この差異を配置の変化のせいにすることができる。かくして、この試験は、両方のペーストにおける2つの配置と、固化セメント型との間の化学的、物理的、機械的、および形態学的等価性を示す。
Claims (58)
- 水溶液との混合に際して骨移植片代用セメントを形成させるのに適合させた粒子状組成物であって、
i)粒子状組成物の総重量に基づいて50〜90重量%の濃度で存在する硫酸カルシウム半水化物粉末;
ii)リン酸一カルシウム一水和物粉末;ならびに
iii)20μm未満の中央粒子径を有するリン酸β-トリカルシウム粉末、
を含む、前記組成物。 - 硫酸カルシウム半水化物粉末が、粒子状組成物の総重量に基づいて、少なくとも70重量%の濃度で存在する、請求項1に記載の粒子状組成物。
- 硫酸カルシウム半水化物粉末が二峰性粒子分布を有する、請求項1または2に記載の粒子状組成物。
- 硫酸カルシウム半水化物粉末が5〜20μmの中央粒子径を有する、請求項1〜3のいずれか1項に記載の粒子状組成物。
- 少なくとも75μmの中央粒子径を有するリン酸β-トリカルシウム顆粒をさらに含む、請求項1〜4のいずれか1項に記載の粒子状組成物。
- リン酸β-トリカルシウム顆粒が75〜1,000μmの中央粒子径を有する、請求項5に記載の粒子状組成物。
- リン酸β-トリカルシウム顆粒が粒子状組成物の総重量に基づいて最大で20重量%の濃度で存在する、請求項5または6に記載の粒子状組成物。
- リン酸β-トリカルシウム顆粒が粒子状組成物の総重量に基づいて最大で12重量%の濃度で存在する、請求項7に記載の粒子状組成物。
- 硫酸カルシウム半水化物が硫酸α-カルシウム半水化物である、請求項1〜8のいずれか1項に記載の粒子状組成物。
- 硫酸カルシウム半水化物粉末が、硫酸カルシウム半水化物粉末の総体積に基づいて、1.0〜3.0μmの最頻値を有する30〜60体積%の粒子および20〜30μmの最頻値を有する40〜70体積%の粒子を含む二峰性粒子分布を有する、請求項1〜9のいずれか1項に記載の粒子状組成物。
- 硫酸カルシウム半水化物が少なくとも75重量%の濃度で存在する、請求項1〜10のいずれか1項に記載の粒子状組成物。
- リン酸一カルシウム一水和物粉末とリン酸β-トリカルシウム粉末の混合濃度が、粒子状組成物の総重量に基づいて、3〜30重量%である、請求項1〜11のいずれか1項に記載の粒子状組成物。
- リン酸β-トリカルシウム粉末が、リン酸β-トリカルシウム粉末の総体積に基づいて、2.0〜6.0μmの最頻値を有する30〜70体積%の粒子および40〜70μmの最頻値を有する30〜70体積%の粒子を含む二峰性粒子径分布を有する、請求項1〜12のいずれか1項に記載の粒子状組成物。
- リン酸β-トリカルシウム粉末が、リン酸β-トリカルシウム粉末の総体積に基づいて、4.0〜5.5μmの最頻値を有する50〜65体積%の粒子および60〜70μmの最頻値を有する35〜50体積%の粒子を含む二峰性粒子径分布を有する、請求項13に記載の粒子状組成物。
- 硫酸カルシウム半水化物の硫酸カルシウム二水和物への変換を加速するために適合させた反応促進剤をさらに含む、請求項1〜14のいずれか1項に記載の粒子状組成物。
- 前記反応促進剤が、硫酸カルシウム二水和物粒子、硫酸カリウム粒子、および硫酸ナトリウム粒子からなる群より選択され、必要に応じてスクロースで被覆されたものである、請求項15に記載の粒子状組成物。
- 前記反応促進剤が、粒子状組成物の総重量に基づいて、最大で1重量%の濃度で存在する、請求項15または16に記載の粒子状組成物。
- 粒子状組成物が、水溶液との混合の際に3〜25分で硬化した塊に固化する、請求項1〜17のいずれか1項に記載の粒子状組成物。
- i)粒子状組成物の総重量に基づいて、少なくとも75重量%の濃度で存在する、二峰性粒子分布および5〜20μmの中央粒子径を有する硫酸カルシウム半水化物粉末;
ii)リン酸一カルシウム一水和物粉末;
iii)20μm未満の中央粒子径を有するリン酸β-トリカルシウム粉末;
iv)少なくとも75μmの中央粒子径を有し、粒子状組成物の総重量に基づいて、最大で20重量%の濃度で存在するリン酸β-トリカルシウム顆粒;ならびに
v)粒子状組成物の総重量に基づいて、最大で1重量%の濃度で存在する、硫酸カルシウム半水化物の硫酸カルシウム二水和物への変換を加速するために適合させた反応促進剤、
を含み、前記ii)のリン酸一カルシウム一水和物粉末と前記iii)のリン酸β-トリカルシウム粉末が、粒子状組成物の総重量に基づいて、合わせて3〜30重量%の濃度で存在する、請求項1に記載の粒子状組成物。 - i)硫酸カルシウム半水化物粉末が粒子状組成物の総重量に基づいて少なくとも75重量%の濃度で存在し、硫酸カルシウム半水化物粉末が、硫酸カルシウム半水化物粉末の総体積に基づいて1.0〜3.0μmの最頻値を有する30〜60体積%の粒子および20〜30μmの最頻値を有する40〜70体積%の粒子を含む二峰性粒子分布を有する、二峰性粒子分布および5〜20μmの中央粒子径を有する硫酸α-カルシウム半水化物粉末;
ii)リン酸一カルシウム一水和物粉末;
iii)20μm未満の中央粒子径を有するリン酸β-トリカルシウム粉末、粒子状組成物の総重量に基づいて10〜20重量%の混合濃度で存在するリン酸一カルシウム一水和物粉末およびリン酸β-トリカルシウム粉末;
iv)100〜400μmの中央粒子径を有し、粒子状組成物の総重量に基づいて最大で12重量%の濃度で存在するリン酸β-トリカルシウム顆粒;ならびに
v)粒子状組成物の総重量に基づいて最大で1重量%の濃度で存在する、硫酸カルシウム半水化物の硫酸カルシウム二水和物への変換を加速するために適合させた反応促進剤、
を含む、請求項1に記載の粒子状組成物。 - 生物活性物質をさらに含む、請求項1、19および20のいずれか1項に記載の粒子状組成物。
- 生物活性物質が、海綿状骨チップ、増殖因子、抗生物質、殺虫剤、化学療法剤、抗ウイルス剤、鎮痛剤、および抗炎症剤からなる群より選択される、請求項21に記載の粒子状組成物。
- 生物活性物質が骨形成誘導性材料である、請求項21に記載の粒子状組成物。
- 骨形成誘導性材料が脱塩された骨マトリックスである、請求項23に記載の粒子状組成物。
- 生物活性物質が、線維芽細胞増殖因子、血小板由来増殖因子、骨形態形成タンパク質、骨形成タンパク質、トランスフォーミング増殖因子、LIM石灰化タンパク質、類骨誘導因子、アンギオジェニン、エンドセリン;増殖分化因子、ADMP-1、エンドセリン、肝細胞増殖因子およびケラチノサイト増殖因子、ヘパリン結合増殖因子、ヘッジホッグタンパク質、インターロイキン、コロニー刺激因子、上皮増殖因子、インスリン様増殖因子、サイトカイン、オステオポンチン、およびオステオネクチンからなる群より選択される増殖因子である、請求項21に記載の粒子状組成物。
- 請求項1、19、および20のいずれか1項に記載の粒子状組成物を、水溶液と混合することにより形成された、硫酸カルシウム二水和物とブラッシャイトを含む反応生成物を含む骨移植片代用セメント。
- 少なくとも75μmの中央粒子径を有するリン酸β-トリカルシウム顆粒をさらに含む、請求項26に記載の骨移植片代用セメント。
- 前記セメントが所定の形状に成形される、請求項26に記載の骨移植片代用セメント。
- 前記の所定の形状が、ペレット、顆粒、くさび、ブロック、およびディスクからなる群より選択される、請求項28に記載の骨移植片代用セメント。
- 前記セメントが、粒子状組成物と水溶液との混合後、周囲空気中で1時間硬化させた後、少なくとも4 MPaの直径張力強度を示す、請求項26に記載の骨移植片代用セメント。
- 前記セメントが、周囲空気中で1時間硬化させた後、少なくとも6 MPaの直径張力強度を示す、請求項30に記載の骨移植片代用セメント。
- 前記セメントが、粒子状組成物と水溶液との混合後、周囲空気中で24時間硬化させた後、少なくとも8 MPaの直径張力強度を示す、請求項26に記載の骨移植片代用セメント。
- 前記セメントが、周囲空気中で24時間硬化させた後、少なくとも10 MPaの直径張力強度を示す、請求項32に記載の骨移植片代用セメント。
- 前記セメントが、1日あたりに失われる重量の平均割合(%)として表され、37℃で蒸留水中に3.3 mmの長さを有する4.8 mmのODペレットを浸すことにより測定される、硫酸カルシウムからなる粒子状組成物を用いて形成されるセメントの平均分解速度よりも少なくとも25%低い平均分解速度を示す、請求項26に記載の骨移植片代用セメント。
- 前記セメントが、硫酸カルシウムのみからなる粒子状組成物を用いて形成されるセメントよりも少なくとも30%低い平均分解速度を示す、請求項34に記載の骨移植片代用セメント。
- 前記水溶液がカルボン酸を含む、請求項26に記載の骨移植片代用セメント。
- カルボン酸がヒドロキシカルボン酸である、請求項36に記載の骨移植片代用セメント。
- ヒドロキシカルボン酸がグリコール酸である、請求項37に記載の骨移植片代用セメント。
- カルボン酸を6.5〜7.5のpHに中和する、請求項36に記載の骨移植片代用セメント。
- 請求項1、19、および20のいずれか1項に記載の粒子状組成物を封入する1個以上の容器、滅菌水溶液を封入する別の容器、ならびにキットの使用方法を記載する説明書セットを含む、骨移植片代用キット。
- 粒子状組成物を水溶液と混合するために適合させた混合装置をさらに含む、請求項40に記載の骨移植片代用キット。
- 骨移植片代用セメントを骨欠損の部位に送達するために適合させた送達デバイスをさらに含む、請求項40に記載の骨移植片代用キット。
- i)リン酸一カルシウム一水和物粉末を封入する第1の容器;
ii)20μm未満の中央粒子径を有するリン酸β-トリカルシウム粉末を封入する第2の容器;
iii)別の容器内に封入されるか、またはリン酸一カルシウム一水和物粉末およびリン酸β-トリカルシウム粉末の一方もしくは両方と混合された、粒子状組成物の総重量に基づいて50〜90重量%の濃度で存在する硫酸カルシウム半水化物粉末;
iv)別の容器内に封入された水溶液;ならびに、
v)水溶液内に溶解されるか、または結晶性粉末の形態で存在するカルボン酸であって、カルボン酸を水溶液に溶解する場合、それを水溶液の照射滅菌後に該溶液に添加するという前提で、カルボン酸結晶粉末を別の容器内に封入するか、またはリン酸一カルシウム一水和物粉末、リン酸β-トリカルシウム粉末、および硫酸カルシウム半水化物粉末のいずれか1種以上と混合する、前記カルボン酸、
を含む、請求項40に記載の骨移植片代用キット。 - 前記キットが、γ線への曝露により滅菌される、請求項43に記載の骨移植片代用キット。
- カルボン酸が、グリコール酸ナトリウム、グリコール酸カリウム、乳酸ナトリウム、および乳酸カリウムからなる群より選択される中和された塩の形態にある、請求項43に記載の骨移植片代用キット。
- カルボン酸結晶粉末が、水溶液をリン酸一カルシウム一水和物粉末、リン酸β-トリカルシウム粉末、および硫酸カルシウム半水化物粉末の1種以上と混合する前に、該水溶液と混合することにより再構成することができるように、別の容器内に封入される、請求項43に記載の骨移植片代用キット。
- 硫酸カルシウム半水化物粉末が、混合物中、硫酸カルシウム半水化物の硫酸カルシウム二水和物への変換を加速するために適合させた反応促進剤をさらに含む、請求項43に記載の骨移植片代用キット。
- 反応促進剤が、硫酸カルシウム二水和物粒子、硫酸カリウム粒子、および硫酸ナトリウム粒子からなる群より選択され、必要に応じてスクロースで被覆されたものである、請求項47に記載の骨移植片代用キット。
- 別の容器中、またはリン酸一カルシウム一水和物粉末、リン酸β-トリカルシウム粉末、および硫酸カルシウム半水化物粉末の1種以上との混合物中に少なくとも75μmの中央粒子径を有するリン酸β-トリカルシウム顆粒をさらに含む、請求項43に記載の骨移植片代用キット。
- 別の容器内に封入されるか、またはリン酸一カルシウム一水和物粉末、リン酸β-トリカルシウム粉末、および硫酸カルシウム半水化物粉末の1種以上と混合された生物活性物質をさらに含む、請求項43に記載の骨移植片代用キット。
- 生物活性物質が、海綿状骨チップ、増殖因子、抗生物質、殺虫剤、化学療法剤、抗ウイルス剤、鎮痛剤、および抗炎症剤からなる群より選択される、請求項50に記載の骨移植片代用キット。
- i)リン酸一カルシウム一水和物粉末を封入する第1の容器;
ii)20μm未満の中央粒子径を有するリン酸β-トリカルシウム粉末を封入する第2の容器;
iii)二峰性粒子分布および5〜20μmの中央粒子径を有する、別の容器内に封入されるか、または第2の容器中のリン酸β-トリカルシウム粉末と混合された硫酸α-カルシウム半水化物;
iv)別の容器内に封入された水溶液;
v)結晶粉末の形態のカルボン酸であって、カルボン酸結晶粉末が別の容器内に封入され、カルボン酸が中和したアルカリ金属塩の形態にある、前記カルボン酸;
vi)硫酸α-カルシウム半水化物粉末との混合物中での硫酸カルシウム半水化物の硫酸カルシウム二水和物への変換を加速するために適合させた反応促進剤;ならびに
vii)少なくとも75μmの中央粒子径を有する、別の容器中またはリン酸β-トリカルシウム粉末および硫酸カルシウム半水化物粉末の一方もしくは両方との混合物中のリン酸β-トリカルシウム顆粒、
を含む、請求項40に記載の骨移植片代用キット。 - 骨欠損の部位に適用することにより骨欠損を治療するための、請求項26〜39のいずれか1項に記載の骨移植片代用セメント。
- 水とカルボン酸の存在下で反応してブラッシャイトを形成するリン酸カルシウム粉末を含む粒子状組成物と、それと混合して骨移植片代用セメントを形成させるのに適合させた水溶液とを含むキットの保存安定性を改善するための方法であって、
i)キット中の別々の容器中にリン酸一カルシウム一水和物粉末とリン酸β-トリカルシウム粉末を包装すること;および
ii)硫酸カルシウム半水化物粉末を、キット中のさらに別の容器に包装するか、あるいはリン酸一カルシウム一水和物粉末とリン酸β-トリカルシウム粉末の一方または両方と混合すること
を含み、硫酸カルシウム半水化物粉末が、粒子状組成物の総重量に基づいて50〜90重量%の量で存在する、前記方法。 - カルボン酸が、グリコール酸ナトリウム、グリコール酸カリウム、乳酸ナトリウム、および乳酸カリウムからなる群より選択される中和した塩の形態にある、請求項54に記載の方法。
- 滅菌のためにキットの成分にγ線を照射することをさらに含む、請求項54または55に記載の方法。
- キットが水溶液とは別の容器に包装されたカルボン酸結晶粉末を含む、請求項54〜56のいずれか1項に記載の方法。
- カルボン酸結晶粉末を、リン酸一カルシウム一水和物粉末を含む容器またはリン酸β-トリカルシウム粉末を含む容器中に包装する、請求項54〜56のいずれか1項に記載の方法。
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DK1933892T3 (da) | 2013-03-25 |
BRPI0617086B1 (pt) | 2018-08-21 |
US8685464B2 (en) | 2014-04-01 |
EP1933892B1 (en) | 2012-12-12 |
EP1933892A2 (en) | 2008-06-25 |
AU2006287478B2 (en) | 2012-02-02 |
BRPI0617086A2 (pt) | 2011-07-12 |
US20100249794A1 (en) | 2010-09-30 |
US9180224B2 (en) | 2015-11-10 |
US7754246B2 (en) | 2010-07-13 |
CA2619469C (en) | 2015-03-03 |
CN103349793B (zh) | 2016-02-10 |
ES2402651T3 (es) | 2013-05-07 |
KR101270876B1 (ko) | 2013-06-07 |
BRPI0617086B8 (pt) | 2021-06-22 |
KR20080043332A (ko) | 2008-05-16 |
WO2007030616A3 (en) | 2008-04-03 |
AU2006287478A1 (en) | 2007-03-15 |
US20070128248A1 (en) | 2007-06-07 |
CA2619469A1 (en) | 2007-03-15 |
CN103349793A (zh) | 2013-10-16 |
WO2007030616A2 (en) | 2007-03-15 |
JP2009507575A (ja) | 2009-02-26 |
US20070059281A1 (en) | 2007-03-15 |
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