JP2017094207A - 一体型の白血球、酸素及び/又は二酸化炭素減損・血漿分離フィルタ装置 - Google Patents
一体型の白血球、酸素及び/又は二酸化炭素減損・血漿分離フィルタ装置 Download PDFInfo
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Abstract
【解決手段】血液フィルタ装置であって、外壁、第1の入口、第1の出口及び第2の出口を備えたハウジングを含み、血液フィルタ装置は、血漿を血液から分離することができるメンブレンを更に含み、メンブレンは、内側チャンバを形成し、血液フィルタ装置は、内側チャンバ内に設けられた白血球及び酸素及び/又は二酸化炭素減損媒体を更に含み、白血球及び酸素及び/又は二酸化炭素減損媒体は、血液から白血球及び酸素及び/又は二酸化炭素を減損させることができ、血液フィルタ装置は、外壁とメンブレンとの間に設けられた外側チャンバを更に含み、血漿は、メンブレンに浸透し、外側チャンバに入り、そして第1の出口を経てハウジングから出、酸素及び/又は二酸化炭素及び白血球並びに血漿が減損した血液は、第2の出口を経てフィルタ装置から出ることを特徴とする。
【選択図】図1
Description
本願は、2011年8月10日に出願された米国特許仮出願第61/522,168号(発明の名称:Integrated Leukocyte, Oxygen and/or CO2 Depletion, and Plasma Separation Filter Device)及び2011年8月10日に出願された米国特許仮出願第61/522,157号(発明の名称:Leukoreduction and Oxygen Depletion Device)の優先主張出願であると共に2010年10月8日に出願された米国特許出願第12/910,350号(発明の名称:Blood Storage Bag System and Depletion Devices with Oxygen and Carbon Dioxide Depletion Capabilities)の一部継続出願(CIP)であり、この米国特許出願は、2010年5月5日に出願された米国特許仮出願第61/331,693号の権益主張出願であると共に2010年10月12日に出願された米国特許出願第12/903,057号(発明の名称:Oxygen Depletion Devices and Methods for Removing Oxygen from Red Blood Cells)のCIPであり、この米国特許出願は、2009年10月12日に出願された米国特許仮出願第61/250,661号及び2010年11月5日に出願された米国特許仮出願第61/410,684号の権益主張出願であり、これら米国特許出願及び米国特許仮出願を各々参照により引用し、その記載内容全体を本明細書の一部とする。
a.pRBCが長期間にわたって貯蔵されると、貯蔵中の劣化が累積してpRBCを劣化させ、それにより最大1%のpRBCを貯蔵中、溶血させると共に最高25%のpRBCが輸血直後に失われる。
b.生育不能pRBCは、慢性輸血患者に鉄過剰を生じさせる。
c.輸血は、組織灌流の増大の意図した結果を必ずしも達成しない。
・pRBC中のヘモグロビンは、2,3‐DPGが失われるので組織のところに酸素を効果的に放出しない。
・pRBCは、変形能が失われるので毛細血管床に入ってこれを灌流することができない。
長期間にわたって貯蔵されたpRBCを輸血すると、その結果として、「新鮮な」赤血球を輸血した場合と比較して、死亡率が高くなると共に入院期間が長くなる場合がある。
CaO + H2O -Ca(OH)2
水酸化カルシウムは、二酸化炭素と反応して炭酸カルシウムと水を生じ、次の通りである。
Ca(OH)2 + CO2- CaCO3 + H2O
次の理想気体の法則、即ち、
る。
図6A及び図6Bを参照すると、全血白血球減少フィルタ、O2及びCO2減損装置が部分断面図で示されている。全血又は供血者全血は、第1の入口410を通って装置内に流れ、そして分散され、その後減損媒体440を収容した内側チャンバ403内に流入する。
図7を参照すると、内側チャンバ403は、中空繊維490相互間に介在して設けられた減損媒体480を有する。血液は、中空繊維490を通って流れ、O2及びCO2が減損媒体480によって収着される。
図8A〜図8Dを参照すると、白血球/血小板/酸素/二酸化炭素減損装置1が示されている。抗凝固剤を含む全血か供血者全血かのいずれかが入口2を通って流入する。装置を通過した後、白血球/血小板/酸素/二酸化炭素減少赤血球濃縮物が出口3から出、そして収集袋内に集められる。図8Bは、回転シール組立体4を備えた一体型装置の断面を示している。入口2を通って装置に入った血液は、血液入口分布チャンバ7を通って白血球/血小板/酸素/二酸化炭素減損媒体8を有する内側チャンバ(血漿減損チャンバ10)に分布される。内側チャンバ(白血球/血小板/酸素/二酸化炭素減損チャンバ5)を回転させることにより、テイラーの渦が乱流を生じさせ、層流に起因して増大する拡散時間を減少させる。血漿を血液から分離することができるメンブレン(血漿フィルタ11)により血漿を濾過し、血漿を収集チャンバ12内に集めた後、血漿が、白血球/血小板/酸素/二酸化炭素減損血漿出口6を通って装置から出る。白血球/血小板/酸素/二酸化炭素減損血液は、出口分布チャンバ9に至り、そして出口3を通って流出する。
Claims (38)
- 血液フィルタ装置であって、
外壁、第1の入口、第1の出口及び第2の出口を備えたハウジングを含み、
血漿を血液から分離することができるメンブレンを含み、前記メンブレンは、前記ハウジング内に少なくとも1つの内側チャンバを形成し、前記血液は、前記第1の入口を通って前記血液フィルタ装置の前記少なくとも1つの内側チャンバに流入し、
前記少なくとも1つの内側チャンバ内に設けられた白血球及び酸素減損媒体を含み、前記白血球及び酸素減損媒体は、前記血液から白血球及び酸素を減損させることができ、
前記外壁と前記メンブレンとの間に設けられた外側チャンバを含み、前記血漿は、前記メンブレンに浸透し、前記外側チャンバに入り、そして前記第1の出口を経て前記ハウジングから出、
酸素、白血球及び血漿の減損した前記血液は、濃縮赤血球(pRBC)として前記第2の出口を経て前記ハウジングから出る、血液フィルタ装置。 - 前記減損媒体は又、CO2を前記血液から減損させることができる、請求項1記載の血液フィルタ装置。
- 前記減損媒体は又、血小板を前記血液から減損させることができる、請求項1記載の血液フィルタ装置。
- 前記第1の出口は、シールを更に備えている、請求項1記載の血液フィルタ装置。
- 前記シールは、回転シールを含む、請求項1記載の血液フィルタ装置。
- 前記内側チャンバは、前記外側チャンバに対して回転する、請求項1記載の血液フィルタ装置。
- 前記回転により、前記少なくとも1つの内側チャンバ内に渦が生じる、請求項6記載の血液フィルタ装置。
- 前記渦は、テイラーの渦である、請求項7記載の血液フィルタ装置。
- 前記pRBCは、3%以下のO2飽和率を有する、請求項1記載の血液フィルタ。
- 前記pRBCは、30mmHg未満のpCO2を有する、請求項2記載の血液フィルタ装置。
- 前記pRBCは、35%を超える赤血球容積率を有する、請求項1記載の血液フィルタ装置。
- 前記メンブレンは、親水性にしたPVDF、ナイロン、セルロースエステル、ポリスルホン、ポリエーテルスルホン、親水性にしたポリプロピレン及びポリアクリロニトリルから成る群から選択された少なくとも1つの材料で作られた少なくとも1枚のメンブレンである、請求項1記載の血液フィルタ装置。
- 前記メンブレンの厚さは、25〜250ミクロンである、請求項1記載の血液フィルタ装置。
- 前記メンブレンは、2ミクロン未満の孔径を有する、請求項13記載の血液フィルタ装置。
- 前記白血球及び酸素減損媒体は、酸素収着材料及び白血球減少材料を含むマクロ孔質構造体を有する、請求項1記載の血液フィルタ装置。
- 前記マクロ孔質構造体は、CO2収着材料を更に含む、請求項15記載の血液フィルタ装置。
- 前記O2収着材料は、金属酸化物又は金属水酸化物である、請求項16記載の血液フィルタ装置。
- 前記マクロ孔質構造体は、生体適合性白血球結合表面化学組成で被覆された酸素収着材料である、請求項15記載の血液フィルタ装置。
- 前記マクロ孔質構造体は、有機又は無機材料で作られている、請求項15記載の血液フィルタ装置。
- 前記マクロ孔質構造体は、繊維状材料、フォーム又は微小球から成る群から選択される、請求項19記載の血液フィルタ装置。
- 前記マクロ孔質構造体は、10〜30ミクロンの平均流量孔径を有する、請求項20記載の血液フィルタ装置。
- 前記マクロ孔質構造体は、表面積が少なくとも5×103cm2/グラムの媒体を有する、請求項20記載の血液フィルタ装置。
- 前記マクロ孔質構造体は、生体適合性白血球結合表面化学組成で被覆された微小球から成り、前記微小球は、次に、白血球減少充填剤中に混入される、請求項15記載の血液フィルタ装置。
- 前記マクロ孔質構造体は、微小球の層から成る、請求項23記載の血液フィルタ装置。
- 前記マクロ孔質構造体は、1本又は2本以上の繊維から成る、請求項15記載の血液フィルタ装置。
- 前記1本又は2本以上の繊維は、フィルタ構造体の状態に形成される、請求項15記載の血液フィルタ装置。
- 前記1本又は2本以上の繊維は、これら繊維をフィルタ構造体の状態に形成する前又は後に改質される、請求項26記載の血液フィルタ装置。
- 前記1本又は2本以上の繊維は、ポリ(エチレンメタクリレートシクロヘキセニルメタクリレート)及び他のポリマー粒子配合物から成る群から選択された少なくとも1つの材料で作られている、請求項25記載の血液フィルタ装置。
- 前記1本又は2本以上の繊維は、白血球減少繊維及び酸素収着繊維を含む、請求項15記載の血液フィルタ装置。
- 前記1本又は2本以上の繊維は、組み合わせ型白血球減少結合材料・酸素減損材料を含む、請求項25記載の血液フィルタ装置。
- 前記1本又は2本以上の繊維は、CO2減損材料を更に含む、請求項25記載の血液フィルタ装置。
- 前記1本又は2本以上の繊維は、白血球結合繊維で包囲された酸素収着繊維の1つ又は2つ以上の束を含む、請求項29記載の血液フィルタ装置。
- 前記白血球結合繊維は、生体適合性である、請求項32記載の血液フィルタ装置。
- 前記酸素収着繊維のコアは、二酸化炭素収着繊維を更に含む、請求項32記載の血液フィルタ装置。
- 血小板減損媒体を更に含む、請求項1記載の血液フィルタ装置。
- 前記白血球減少材料は、ポリオレフィン、ポリアミド、ポリエステル及び酸素スカベンジャと配合可能な他のポリマーから成る群から選択された少なくとも1つのポリマーであり、前記ポリマーは、形成され、次に繊維の状態に紡がれる、請求項15記載の血液フィルタ装置。
- 前記フィルタは、少なくとも3ml/分の流量を呈する、請求項1記載の血液フィルタ装置。
- 前記ハウジングは、少なくとも1つの入口を備えた第1の端キャップと、前記第1の出口及び前記第2の出口を備えた第2の端キャップとを有する、請求項1記載の血液フィルタ装置。
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PT4074395T (pt) | 2024-05-20 |
JP2014527436A (ja) | 2014-10-16 |
EP4074395A2 (en) | 2022-10-19 |
US20130047861A1 (en) | 2013-02-28 |
AU2012294269B2 (en) | 2016-11-24 |
ES2742949T3 (es) | 2020-02-17 |
PT3533507T (pt) | 2022-07-25 |
US9005343B2 (en) | 2015-04-14 |
US20150165102A1 (en) | 2015-06-18 |
ES2923571T3 (es) | 2022-09-28 |
JP6515122B2 (ja) | 2019-05-15 |
EP3533507A1 (en) | 2019-09-04 |
JP6097293B2 (ja) | 2017-03-15 |
WO2013023156A1 (en) | 2013-02-14 |
EP4074395B1 (en) | 2024-01-24 |
PT3061509T (pt) | 2019-09-10 |
CA2844449A1 (en) | 2013-02-14 |
ES2576977T3 (es) | 2016-07-12 |
US20170072339A1 (en) | 2017-03-16 |
US9539375B2 (en) | 2017-01-10 |
AU2012294269A1 (en) | 2014-03-06 |
EP2741834A1 (en) | 2014-06-18 |
AU2016253545A1 (en) | 2016-11-17 |
EP3061509A1 (en) | 2016-08-31 |
US10065134B2 (en) | 2018-09-04 |
ES2984863T3 (es) | 2024-10-31 |
EP4074395A3 (en) | 2022-11-23 |
EP2741834B1 (en) | 2016-05-04 |
AU2016253545B2 (en) | 2018-07-05 |
EP3061509B1 (en) | 2019-05-22 |
EP2741834A4 (en) | 2015-02-18 |
EP3533507B1 (en) | 2022-03-30 |
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