JP6109980B2 - 脳の冷却のための装置 - Google Patents
脳の冷却のための装置 Download PDFInfo
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- JP6109980B2 JP6109980B2 JP2016021108A JP2016021108A JP6109980B2 JP 6109980 B2 JP6109980 B2 JP 6109980B2 JP 2016021108 A JP2016021108 A JP 2016021108A JP 2016021108 A JP2016021108 A JP 2016021108A JP 6109980 B2 JP6109980 B2 JP 6109980B2
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Description
低体温法、すなわち患者の体温を下げることは、血流が不十分である期間の後に発生する、たとえば心停止または卒中の後に発生する組織への虚血性の障害の危険性を低減するのを補助する治療として用いられている。このような低体温を引き起こすために様々なシステムおよび方法が提案されている。たとえば、冷却槽内に身体を浸すこと、冷却ラップで身体を包むこと、または血流を身体から出して冷却装置を通るよう経路付けすることといったことが提案されている。他のシステムでは、冷却機構または冷却フローを有するキャップ、ヘルメット、または襟の装着による頭の外部冷却が提案されている。他の方策は、揮発性の液体状のパーフルオロカーボン冷媒を鼻腔中に噴霧し、当該冷媒の蒸発によって頭の温度を下げること、またはたとえば冷液を用いて内部の気道の組織に対してバルーンを拡張することを含んでいる。
本開示は特に、圧縮された呼吸可能なガスから本質的になる冷媒の源と、当該冷媒の源に接続される近位端を有する送達チューブとを含む装置を含む。ガスが当該源から送達チューブの近位端へと解放されると、このガスは断熱的に冷却する。上記送達チューブは、当該ガスが、熱エネルギの実質的な取得なしで、たとえば20℃より高いかまたは約1℃〜5℃より高い温度を得ることなく、送達チューブを通過するよう構成される。少なくとも1つの挿入チューブが送達チューブに接続され、開口部を有する自由端へと延在する。この挿入チューブは、当該自由端が患者の鼻の前鼻甲介領域を超えて患者の気道内に位置決めされるように患者の鼻の中へと挿入されるようサイズ決めおよび構成される。そのため、当該ガスは、挿入チューブを出る前に鼻の粘膜および甲介を通過する。このガスは、送達チューブの近位端と上記少なくとも1つ挿入チューブとの間ではさらなる冷却を経験しない。
この開示の原理の理解を促進する目的で、図面において例示される実施例に対して参照がなされるとともに、これらを説明するために特定の文言が用いられることとなる。しかしながら、これにより請求の範囲の限定が意図されるものではなく、例示される装置における代替例および変形例、ならびに当該開示における例示される原理のさらなる適用例は、本願明細書において、当該開示が関する技術の当業者が通常想到するものとして考慮されるということが理解されるであろう。
Claims (1)
- 患者の治療的冷却のためのシステムであって、
ストラップと穴とを有するマスクを含み、前記マスクは、前記マスクが患者の顔に載ると、患者の顔の少なくとも一部と前記マスクとの間にスペースが存在するように、少なくとも患者の鼻を覆うとともに前記ストラップによって患者の頭に対して保持されるように適合され、前記システムはさらに、
圧縮された呼吸可能なガスから本質的になる冷媒の源を含み、流路が前記源から前記マスクの前記穴を通るよう延在し、前記システムはさらに、
前記冷媒の源と前記マスクの前記穴との間において前記流路中に存在するレギュレータと、
前記冷媒のための前記流路の少なくとも一部を規定する内腔を有する、前記冷媒を前記マスクに向かって運ぶための送達チューブとを含み、
前記冷媒は、前記源からの解放の際または解放の後、断熱的に冷却され、
前記送達チューブは、前記内腔を規定する内層と、前記内層より柔らかい外層とを含む、システム。
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