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NIRO-200NX 脳酸素モニタ
C10448-10
特長
2種類の測定原理を用いて組織の酸素化・循環を詳細に把握します
定量性に優れた空間分解分光法（SRS法）と、反応性に優れたモディファイド・ビア・ランバート法（MBL法）。2つの測定原理を用いて、脳や組織のより細かな酸素・循環状況の情報を提供します。
| 表示シンボル | 項目 | 測定原理 |
|---|---|---|
| TOI(%) | 組織酸素化指標 Tissue Oxygenation Index |
SRS法 |
| nTHI | 正規化組織ヘモグロビン指標 normalized THI |
|
| ΔO2Hb | 酸素化ヘモグロビン変化量 | MBL法 |
| ΔHHb | 脱酸素化ヘモグロビン変化量 | |
| ΔcHb | 総ヘモグロビン変化量 |
3波長の近赤外光が測定精度を高めます
NIRO-200NXは、3波長の近赤外光を照射し、測定精度をより高めています。
各ヘモグロビンの濃度変化量により、脳の状況が詳しくわかります
組織酸素化指数（TOI）が低下した場合、いくつかの原因が考えられます。TOIと同時に各ヘモグロビンの変化を見れば、低酸素となった原因を推定する手がかりとなり、より迅速な対応が可能になります。
酸素化不良・酸素消費量の上昇
酸素化が不充分な場合、脳の総ヘモグロビン量（nTHI、ΔcHb）に変化は見られませんが、酸素化ヘモグロビン（ΔO2Hb）が低下し、反対に脱酸素化ヘモグロビン（ΔHHb）が上昇します。
静脈性鬱血
うっ血状態の場合、脳内の脱酸素化ヘモグロビン（ΔHHb）上昇に伴って、総ヘモグロビン量（nTHI、ΔcHb）が増加します。
虚血・動脈血収縮
脳は虚血状態の場合、脳の総ヘモグロビン量（nTHI、ΔcHb）が減少します。
仕様
| 製品名 | NIRO-200NX 脳酸素モニタ |
|---|---|
| 型名 | C10448-10 |
| 測定項目 | 組織酸素化指標 TOI（％） 正規化組織ヘモグロビン指標 nTHI（初期の値を1とした相対値） 酸素化ヘモグロビン変化量 ΔO₂Hb(μmol/L) 脱酸素化ヘモグロビン変化量 ΔHHb(μmol/L) 総ヘモグロビン変化量 ΔcHb(μmol/L) |
| 測定チャンネル | 2ch（オプションで4chまで拡張可能） |
| 測定範囲 | TOI（％）：0 ％～99 ％ |
| 測定サンプル間隔 | 0.05秒、0.2秒、0.5秒、1秒、2秒、5秒、10秒、20秒、30秒 |
| 光源 | LED（735 nm、810 nm、850 nm：公称値） |
| 照射光量 | 2 mW以下（クラス1LED製品） |
| 光検出器 | フォトダイオード |
| 測定方式 | SRS法（空間分解分光法）、MBL法（モディファイド・ビア・ランバート法） |
| 保存データ | 10回分保存（1回：最大50 000データサンプル） |
| 外部保存 | USBメモリ |
| 出力信号 | デジタル出力（RS232C、D-Sub 9pin)/アナログ出力（8 ch、D-Sub 9pin) |
| 測定プローブ | ケーブル長 約2.5 m（照射・検出プローブ） |
| バッテリ動作 | 約30分間（フル充電時） |
| 外部モニタ出力コネクタ | 15pin VGA端子配列準拠 |
| 外形寸法/質量 | 表示ユニット：約264 mm(W)×278 mm(H)×190 mm(D)/約6 kg AMPユニット：約91 mm(W)×55 mm(H)×156 mm(D)/約0.7 kg 専用架台：約542 mm(W)×1131 mm(H)（テーブルまでの高さ1052 mm）×584 mm(D) |
| ケーブル長 | AMPユニット：約4 m |
| 電源 | AC 100 V 50/60 Hz |
| 消費電力 | 90 VA未満 |
| 医療機器承認情報 | 一般的名称：脳オキシメータ クラス分類：高度管理医療機器（クラスⅢ） 特定保守医療機器：該当 承認番号：30600BZX00183000 販売名：NIRO-200NX 脳酸素モニタ |
参考文献リスト集
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