JP6084694B2 - Rfid機能作動を備える灌流システム - Google Patents
Rfid機能作動を備える灌流システム Download PDFInfo
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- JP6084694B2 JP6084694B2 JP2015532531A JP2015532531A JP6084694B2 JP 6084694 B2 JP6084694 B2 JP 6084694B2 JP 2015532531 A JP2015532531 A JP 2015532531A JP 2015532531 A JP2015532531 A JP 2015532531A JP 6084694 B2 JP6084694 B2 JP 6084694B2
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- rfid tag
- blood
- perfusion system
- disposable
- sensor
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Description
[0084]Hb:ヘモグロビン(g/dL)
[0085]CPB:心肺バイパス
[0086]T:温度(℃)
[0087]VO2=酸素消費量(mL/min)
[0088]VO2i=指数化された酸素消費量(mL/min/m2)
[0089]DO2=酸素供給量(mL/min)
[0090]DO2i=指数化された酸素供給量(mL/min/m2)
[0091]O2 ER=酸素抽出率(%)
[0092]VCO2=二酸化炭素生成量(mL/min)
[0093]VCO2i=指数化された二酸化炭素生成量(mL/min/m2)
[0094]Ve=換気量(L/min)
[0095]eCO2=呼気された二酸化炭素(mmHg)
[0096]AT=嫌気性閾値
[0097]LAC=乳酸塩
[0098]Qc=心拍出量(mL/min)
[0099]IC=心係数(Qc/m2)、(mL/min/m2)
[00100]Qp=ポンプ流量(mL/min)
[00101]IP=指数化されたポンプ流量(Qp/m2)、(mL/min/m2)
[00102]CaO2=動脈酸素含有量(mL/dL)
[00103]CvO2=静脈酸素含有量(mL/dL)
[00104]PaO2=動脈酸素分圧(mmHg)
[00105]PvO2=静脈酸素分圧(mmHg)
[00106]a=動脈
[00107]v=静脈
[00108]Sat=Hb飽和度(%)
[00109]以下の式はRanucciアルゴリズムで有用である。
[00111]CPB中において、VO2=Qp×(CaO2−CvO2) (2)
[00112]正常な循環において、DO2=Qc×CaO2 (3)
[00113]CPB中において、DO2=Qp×CaO2 (4)
[00114]O2 ER=VO2/DO2(%) (5)
[00115]Hb=HCT/3 (6)
[00116]CaO2=Hb×1.36×Sat(a)+PaO2×0.003 (7)
[00117]CvO2=Hb×1.36×Sat(v)+PvO2×0.003 (8)
[00118]VCO2=Ve×eCO2×1.15 (9)
[00119]酸素消費量(VO2)は、各特定の臓器の代謝必要量の総和であり、したがって、生体全体の代謝必要量を表す。基本条件下(休息時)で、それは、約3〜4mL/min/kg、すなわち、70kgの体重の被験者に対して約250ml/minである。式(3)および(7)を適用すると、酸素供給量(DO2)を計算することができ、それは約1000mL/minになる。したがって、DO2はVO2よりも約4倍大きいので、かなりの機能的な余力がある。VO2は、(基本的には、身体的な運動下であるが、敗血症性ショックなどの病理学的条件であっても)代謝必要量に応じて増加する可能性がある。耐久力がトップレベルの運動選手は、約5000mL/minの最大VO2に達することもある。
H LAC+NaHCO3=LAC Na+H2CO3
を受けるために生じ、H2CO3は、H2OおよびCO2に分解され、さらにCO2が生成される。
VCO2=Ve×eCO2×1.15 (9)
[00150]いくつかの実施形態では、Ve値(ガス流量)は、HLM12に接続されたガス混合器から自動的に、かつ連続して取得することができる。いくつかの場合には、Ve値は、DMS29に手動で入力することができる。いくつかの実施形態では、呼気されたCO2値(eCO2)は、HLM12に接続された外部装置により、連続的に、または飛び飛びに(約20分ごとになど)監視されうる。eCO2値は、別個に監視され、手動でDMS29に入力することができる。
Claims (16)
- 人工心肺(12)と、データ管理システム(29)と、前記人工心肺(12)と共に使用されるように構成される1つまたは複数の使い捨て要素(14)と、を備える、統合された灌流システムであって、
前記人工心肺(12)は、
複数のポンプモジュール(16)であって、前記複数のポンプモジュール(16)の各々が制御ユニット(18)を有する、複数のポンプモジュール(16)と、
前記制御ユニット(18)の各々と通信する制御装置(20)と、
前記制御装置(20)と通信し、かつユーザから動作設定情報を受け入れるように構成された入力装置(22)と、
前記制御装置(20)と通信し、かつ前記複数のポンプモジュール(16)の動作パラメータを表示するように構成された出力装置(24)と、
を含み、
前記データ管理システム(29)は、前記制御装置(20)と通信し且つ代謝パラメータを計算し表示するように構成されており、
RFセンサ(26)と、
前記RFセンサ(26)と通信するプロセッサ(27)と、
を含み、
前記1つまたは複数の使い捨て要素(14)は、前記1つまたは複数の使い捨て要素(14)のうち少なくとも1つに関する識別情報でプログラムされた、RFIDタグ(28)を含み、前記RFIDタグ(28)は、前記RFセンサ(26)により読み取り可能であり、且つ、適切な使い捨て要素(14)が識別された時に前記データ管理システム内のアルゴリズムのロックを解除するために、前記プロセッサ(27)により使用可能であり、
前記データ管理システム(29)は、前記1つまたは複数の使い捨て要素(14)からの前記識別情報が受信されると、前記プロセッサ(27)が前記アルゴリズムを使用して前記代謝パラメータを計算し表示するように構成されている、
統合された灌流システム。 - 前記データ管理システム(29)が、前記人工心肺(12)から、また任意選択で外部の供給源からデータを受け取り、かつ記録するように構成される、請求項1に記載の統合された灌流システム。
- 前記データ管理システム(29)が、前記人工心肺(12)から、また任意選択で外部の供給源から受け取ったデータを表示するように構成される、請求項2に記載の統合された灌流システム。
- 前記1つまたは複数の使い捨て要素(14)が、血液貯蔵器、酸素化装置、熱交換器、または動脈フィルタのうちの1つまたは複数を含む、請求項1に記載の統合された灌流システム。
- 前記血液貯蔵器が、静脈血貯蔵器、吸引血液貯蔵器、排出血液貯蔵器、またはそれらの組合せを含む、請求項4に記載の統合された灌流システム。
- 前記1つまたは複数の使い捨て要素(14)が、受動的なRFIDタグ(28)を含む、請求項1に記載の統合された灌流システム。
- 前記入力装置(22)が、タッチスクリーン式コンピュータを含む、請求項1に記載の統合された灌流システム。
- 前記アルゴリズムが代謝アルゴリズムを含む、請求項1に記載の統合された灌流システム。
- 前記RFIDタグ(28)が、前記1つまたは複数の使い捨て要素(14)の性能特性を識別する情報を用いてさらにプログラムされる、請求項1に記載の統合された灌流システム。
- 前記データ管理システム(29)が、前記1つまたは複数の使い捨て要素の前記識別された性能特性を用いて、プライミング量シミュレータを表示するように構成される、請求項9に記載の統合された灌流システム。
- 人工心肺(12)と、RFセンサ(26)を含み且つ代謝パラメータを計算し表示するように構成されたデータ管理システム(29)と、を含む統合された灌流システムを形成する方法であって、
前記使い捨て要素に関する識別情報を有するRFIDタグ(28)に結合された使い捨て構成要素(14)を前記人工心肺(12)に取り付けるステップと、
前記RFセンサ(26)を用いて前記RFIDタグ(28)を読み取るステップと、
前記RFIDタグ(28)から読み取られた情報に従って、前記データ管理システム(29)内のアルゴリズムのロックを解除するステップと、
ロックが解除された前記アルゴリズムを動作させるステップであって、前記データ管理システム(29)は、前記RFIDタグ(28)からの前記識別情報が受信されると、前記ロックが解除されたアルゴリズムを動作させて前記代謝パラメータを計算し表示するように構成されている、ステップと
を含む方法。 - 前記ロックが解除されたアルゴリズムを動作させる前記ステップが、代謝アルゴリズムを表示するステップを含む、請求項11に記載の方法。
- 前記ロックが解除されたアルゴリズムを動作させる前記ステップが、前記RFIDタグ(28)から読み取られた情報に従って、プライミング量シミュレータを表示するステップを含む、請求項11に記載の方法。
- 前記RFIDタグから前記RFセンサ(26)に提供される情報を表示するステップをさらに含む、請求項11に記載の方法。
- RFIDタグ(28)に結合された前記使い捨て構成要素(14)を前記人工心肺(12)に取り付けるステップが、前記RFセンサ(26)で前記RFIDタグ(28)を読み取るステップの前に行われる、請求項11に記載の方法。
- 前記代謝パラメータは、DO2、VO2、VCO2、DO2i、VO2i、VCO2i、第1の比DO2i/VCO2i、第2の比VCO2i/VO2i、および第3の比VO2i/DO2iのうち少なくとも一つを含む、請求項1に記載の統合された灌流システム。
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