JP4974902B2 - 血小板に富んだ血漿の濃縮装置および濃縮方法 - Google Patents
血小板に富んだ血漿の濃縮装置および濃縮方法 Download PDFInfo
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Description
本出願は、2005年2月7日に出願された仮出願No.60/651,050、2005年2月17日に出願された仮出願No.60/654,718、および2005年10月4日に出願された仮出願No.60/723,312の出願日に関して、35USC120の下での利益を主張する。
本発明は、組織封止剤(tissue sealant)および組織接着剤(tissue adhesive)として使用できる、改良された創傷治癒特性を有する血小板−血漿濃縮物を作製するための装置および方法に関するものである。上記濃縮物には、十分に活性な(変性していない)フィブリノーゲンが濃縮されており、当該フィブリノーゲンの濃度は、血液中および血小板中のフィブリノーゲン濃度よりも数倍高いとともに、血液中の血小板の濃度よりも高い。
血液は分画(fractionated)され得、血液の異なる画分(fraction)は、異なる医学上の目的に利用され得る。引力または遠心力が作用している状況下では、血液は、3つの層に自然に分離する。平衡状態では、最上部の低密度層は淡黄色の透明な液体であって、当該液体は、血漿(plasma)と呼ばれる。血漿は、塩、代謝産物、ペプチド、および低分子(インスリン)から巨大分子(補体成分)に至るまで多岐にわたる多くのタンパク質の水溶液である。
それ故に、本発明の目的は、新規のPRP濃縮物を調製するための装置および方法を提供することにある。なお、当該新規のPRP濃縮物では、濃縮された血漿中において血小板濃度が増加されており、当該濃縮された血漿中では、フィブリノーゲンは大して変性していない。
本発明の装置および方法は新規のPRP濃縮物を調製し、当該新規のPRP濃縮物では、濃縮された血漿中において血小板濃度が増加されており、当該濃縮された血漿中では、フィブリノーゲンは大して変性していない。上記新規の生産物は、ある種の手術において高く評価されている血漿濃縮物が有する封止特性および止血特性と、血小板濃度が上昇することによって付与される増強された治療特性とを併せ持っている。
乾燥したヒドロゲルビーズ19は濃縮されて、バスケット18の下半分を満たす。それ故、一方の側のみが空であって、窓186および網目188(図17および図18)の遮蔽されない視界を可能にする。
〔標準的なシステムの操作〕
本明細書に示されるとともに説明されている装置を用いて、血液が処理された。
1)最初の回転は、250rpmにて10秒間、行われた。当該回転によって、十分に低い回転(rpm)条件下で、ビーズがケージ(cage)内に投げ出される。なお、当該回転条件下では、初期の不均衡によって、過剰な振動が発生することはない。熊手の外側末端(最も外側の枝)は、ビーズのバランスをとるために、バスケットの周囲の近辺のビーズを平らにする。
2)赤血球は、3200rpmにて90秒間の赤血球分離用の回転によって分離された。これによって、赤血球は、デプス型フィルター内に詰め込まれた。
3)PRPは、50rpmにて45秒間の低速回転によって濃縮された。そして、PRPは濃縮チェンバー内に引き抜かれるとともに、上記PRPとビーズとが混ぜ合わされた。
4)次いで、PRP濃縮物は、3200rpmにて45秒間の最後の高速回転によって、上記ビーズから除去された。
Claims (12)
- 筺体と、前記筐体内の中心軸の周囲に配置されたPRP分離アセンブリーおよびPRP濃縮アセンブリーとを備えるPRP分離濃縮装置であって、
前記PRP濃縮アセンブリーは、
乾燥ビーズを支持するための床と、網目によって閉じられる少なくとも1つの開口を有する壁と、を有する濃縮チェンバーを備え、
前記網目は、前記濃縮チェンバー中に前記乾燥ビーズを保持し得るように大きさが規定された開口を有し、
前記濃縮チェンバーは、傾斜した床が固定されている外壁によって囲まれ、
前記傾斜した床には、当該床の中央にPRP濃縮槽を備え、
前記筺体には、静止した排出チューブが固定されているとともに、当該排出チューブは、前記中心軸と同心円状に、前記PRP分離アセンブリーを通って前記PRP濃縮槽にまで伸びており、
前記PRP分離アセンブリーは、分離チェンバーを備え、前記PRP濃縮アセンブリーに取り付けられるとともに前記PRP濃縮アセンブリーの上側に配置されて、前記静止した排出チューブの周りを回転することができる一体化した分離濃縮装置複合体を形成し、
前記濃縮チェンバーと分離チェンバーとを接続する中央通路と、前記分離チェンバーから濃縮チェンバーへのPRPの流れを制御するバルブアセンブリーとをさらに備えること特徴とするPRP(血小板に富んだ血漿(platelet rich plasma))分離濃縮装置。 - 前記分離チェンバーは、内壁面を有する外壁と、当該外壁に固定されている傾斜した床とを有し、
前記内壁面は、孔および通路を有するデプス型フィルターに裏打ちされ、
前記孔および通路は、遠心分離の間に赤血球を受け止めて捕捉できるように大きさが規定され、
前記PRP分離アセンブリーは、血液注入口を有することを特徴とする請求項1に記載のPRP分離濃縮装置。 - 前記分離チェンバーは、上端プレートと、前記分離チェンバーの外壁および床に取り付けられた、平衡を保つように配置された分離プレートとを有し、
前記分離プレートは、中心軸と平行な平面中に配置され、
前記分離プレートは、前記外壁から、前記デプス型フィルターの表面を越えて内側に向かって放射状に伸びるとともに、前記床から、前記上端プレートとは離れた位置にまで伸び、
前記分離チェンバーは、前記中心軸に対して実質的に振動せずに回転するために平衡がとられていることを特徴とする請求項2に記載のPRP分離濃縮装置。 - 前記濃縮チェンバーには、垂直網目支持体が配置され、
前記垂直網目支持体は、内表面と外表面とを有し、
前記円筒形状の網目は、前記垂直網目支持体の外表面上に支持されていることを特徴とする請求項1に記載のPRP分離濃縮装置。 - 前記固定されている排出チューブには、ビーズ用の静止した熊手が固定され、
前記熊手は、前記固定されている排出チューブから外側に向かって伸び、
前記熊手は、前記垂直網目支持体から距離をおいて配置される遠位末端を有していることを特徴とする請求項4に記載のPRP分離濃縮装置。 - 前記熊手は、縦の主要部を備え、
前記縦の主要部の中央は、前記固定された排出チューブに固定されており、
前記縦の主要部は、前記固定された排出チューブに隣接する、弱い折れ曲がり点を有し、
前記縦の主要部は、高速遠心分離の間に、膨らんだビーズと接触することに由来する過剰な負荷に晒されたときに、前記折れ曲がり点のために折れ曲がることを特徴とする請求項5に記載のPRP分離濃縮装置。 - 前記濃縮アセンブリーは、当該濃縮アセンブリーの底に固定された、軸方向に同心円状である形状を有する濃縮ドライブ連結部を備え、
前記PRP分離濃縮装置は、前記濃縮ドライブ連結部と噛み合うモーター連結部を有するモーターアセンブリーをさらに含むことを特徴とする請求項1に記載のPRP分離濃縮装置。 - 前記モーターアセンブリーは、加速工程、素早い遠心分離による赤血球分離工程、減速工程、遅くかき回す濃縮工程、加速工程、および早い遠心分離によるPRP濃縮物分離工程の間の、前記濃縮ドライブ連結部の回転のタイミングを調節するためのモーター制御システムを含むことを特徴とする請求項7に記載のPRP分離濃縮装置。
- 前記中央通路の上表面は、バルブシートを含み、
前記バルブシートは、閉位置にあるときには前記バルブアセンブリーのバルブ面と一体化して密閉栓を形成し、開位置にあるときには前記密閉栓を解放するために離れていることを特徴とする請求項1に記載のPRP分離濃縮装置。 - 前記バルブアセンブリーは、1対の向かい合った、通常は垂直に立っているバルブ操作アームを含み、
前記バルブ操作アームの各々は、加重された末端を有する柔軟性のない主要部と、柔軟性のある隣接末端とを有し、
前記柔軟性のある隣接末端の各々は、前記PRP分離濃縮装置が自身の中心軸に対して高速回転する間に、遠心力によって前記バルブ操作アームが外側に回転するときに、前記バルブ面を前記開位置に移動させるために、前記バルブ面を軸方向に持ち上げるように、前記バルブ面に固定されていることを特徴とする請求項9に記載のPRP分離濃縮装置。 - 前記柔軟性のある隣接末端は、前記PRP分離アセンブリーの床から上に向かって伸びる、対向するプレートの間に配置され、
前記プレートの各々は、プレート横端を有し、
前記プレート横端は、前記バルブ操作アームと接触するように配置され、
当該配置によって、前記バルブ操作アームが垂直な位置にあるときには、前記隣接末端が中心軸の周りを回転することが防止され、
前記柔軟性のある隣接末端が前記プレート横端の上に持ち上げられて前記バルブ面が開放されたときには、前記バルブ操作アームが自由に回転できることを特徴とする請求項10に記載のPRP分離濃縮装置。 - 前記プレートは、軸回転後の前記バルブ操作アームを支持するために配置されている上端を有し、
前記上端によって、遠心回転が終了したときに前記バルブ操作アームが垂直位置に戻ることを防ぐとともに、前記バルブアセンブリーが閉じることを防ぐことを特徴とする請求項11に記載のPRP分離濃縮装置。
Applications Claiming Priority (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US65105005P | 2005-02-07 | 2005-02-07 | |
| US60/651,050 | 2005-02-07 | ||
| US65471805P | 2005-02-17 | 2005-02-17 | |
| US60/654,718 | 2005-02-17 | ||
| US72331205P | 2005-10-04 | 2005-10-04 | |
| US60/723,312 | 2005-10-04 | ||
| PCT/US2006/003597 WO2006086199A1 (en) | 2005-02-07 | 2006-01-30 | Platelet rich plasma concentrate apparatus and method |
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2006
- 2006-01-30 WO PCT/US2006/003597 patent/WO2006086199A1/en not_active Ceased
- 2006-01-30 EP EP13169586.8A patent/EP2666494B1/en not_active Expired - Lifetime
- 2006-01-30 EP EP15159104.7A patent/EP2910258B1/en not_active Expired - Lifetime
- 2006-01-30 JP JP2007554193A patent/JP4961354B2/ja not_active Expired - Lifetime
- 2006-01-30 EP EP13169584.3A patent/EP2666493B1/en not_active Expired - Lifetime
- 2006-01-30 ES ES06720111T patent/ES2426941T3/es not_active Expired - Lifetime
- 2006-01-30 US US11/342,749 patent/US7824559B2/en active Active
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- 2006-01-30 EP EP06720109.5A patent/EP1848472B1/en not_active Expired - Lifetime
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Also Published As
| Publication number | Publication date |
|---|---|
| US7824559B2 (en) | 2010-11-02 |
| EP1848472B1 (en) | 2015-04-01 |
| EP2666494A2 (en) | 2013-11-27 |
| WO2006086199A1 (en) | 2006-08-17 |
| US20060175244A1 (en) | 2006-08-10 |
| US8096422B2 (en) | 2012-01-17 |
| JP2012011225A (ja) | 2012-01-19 |
| JP2012030085A (ja) | 2012-02-16 |
| JP2008529596A (ja) | 2008-08-07 |
| JP5248665B2 (ja) | 2013-07-31 |
| JP2008535531A (ja) | 2008-09-04 |
| EP2910258A2 (en) | 2015-08-26 |
| JP5523418B2 (ja) | 2014-06-18 |
| EP2666494B1 (en) | 2018-01-17 |
| EP2666493A2 (en) | 2013-11-27 |
| EP2666493B1 (en) | 2020-09-23 |
| ES2426941T3 (es) | 2013-10-25 |
| EP2910258B1 (en) | 2018-08-01 |
| JP4961354B2 (ja) | 2012-06-27 |
| EP2910258A3 (en) | 2015-11-25 |
| EP2666494A3 (en) | 2014-04-23 |
| US20110042296A1 (en) | 2011-02-24 |
| EP2666493A3 (en) | 2014-04-30 |
| EP1848472A1 (en) | 2007-10-31 |
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