JP7401596B2 - シーブベッド迂回路を有するo2濃縮器およびその制御方法 - Google Patents
シーブベッド迂回路を有するo2濃縮器およびその制御方法 Download PDFInfo
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- JP7401596B2 JP7401596B2 JP2022084992A JP2022084992A JP7401596B2 JP 7401596 B2 JP7401596 B2 JP 7401596B2 JP 2022084992 A JP2022084992 A JP 2022084992A JP 2022084992 A JP2022084992 A JP 2022084992A JP 7401596 B2 JP7401596 B2 JP 7401596B2
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- flow rate
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- oxygen concentrator
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- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 262
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- A61M2205/8206—Internal energy supply devices battery-operated
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- A—HUMAN NECESSITIES
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-
- B—PERFORMING OPERATIONS; TRANSPORTING
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- B01D2253/10—Inorganic adsorbents
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- B01D2253/108—Zeolites
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B01D—SEPARATION
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- B01D2256/12—Oxygen
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
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- B01D2257/102—Nitrogen
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/45—Gas separation or purification devices adapted for specific applications
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Description
本出願は、発明の名称を「O2 CONCENTRATOR WITH SIEVE BED BYPASS AND CONTROL METHOD THEREOF(シーブベッド迂回路を有するO2濃縮器およびその制御方法)」として2019年5月22日に出願された米国特許仮出願第62/851,204号に関し、当該仮出願の優先権の利益を主張するものであり、その内容全体を明示的に本明細書に援用する。
Claims (17)
- ベンチレータによって患者に送られる高酸素濃度のガスと患者用換気インタフェースにより取り込まれる環境大気の総流量に基づいて、前記ベンチレータに接続された酸素濃縮器を制御する方法であって、
流量センサが、前記ベンチレータに接続された患者用換気インタフェースの1つまたは複数のノズルによって吐出される前記高酸素濃度のガスの流量を測定し、前記患者用換気インタフェースは、前記1つまたは複数のノズルに加えて、前記患者に送るための追加の環境大気を取り込むための1つまたは複数の開口を含み、
圧力センサが、前記患者用換気インタフェース内の圧力を測定し、
コントローラが、前記測定された流量と前記測定された圧力とに基づいて、前記総流量を決定することを含み、前記総流量は、前記1つまたは複数のノズルによって吐出される高酸素濃度のガスの流量と、前記1つまたは複数の開口から取り込まれる環境大気の取込流量とを含む、方法。 - 複数のノズル形状のそれぞれに関連した1つまたは複数の定数を格納することをさらに含み、
前記1つまたは複数のノズルは、前記複数のノズル形状の1つに対応したノズル形状を有し、
前記総流量の決定は、前記測定された流量、前記測定された圧力および前記1つまたは複数のノズルの前記ノズル形状に関連して格納された前記1つまたは複数の定数に基づいて、前記総流量を計算することをさらに含む、請求項1に記載の方法。 - 前記複数のノズル形状のそれぞれについて、前記関連する1つまたは複数の定数が、そのノズル形状を有するノズルのある患者用換気インタフェースに配置されたメモリに格納し、
前記総流量の決定は、前記ベンチレータに接続された前記患者用換気インタフェースに格納されている前記1つまたは複数の定数を読み取ることを含む、請求項2に記載の方法。 - 前記コントローラが、前記決定された総流量に基づいて、前記ベンチレータに接続された酸素濃縮器に信号を送信することをさらに含む、請求項1~3のいずれか1項に記載の方法。
- 前記コントローラが、前記決定された総流量を時間で積分することにより、総一回吸気量を計算することをさらに含む、請求項1~4のいずれか1項に記載の方法。
- 前記コントローラが、前記計算で求められた総一回吸気量に基づいて、前記ベンチレータに接続された酸素濃縮器に信号を送信することをさらに含む、請求項5に記載の方法。
- 前記コントローラが、
前記測定された流量を時間積分することで、前記1つまたは複数のノズルによって吐出される前記高酸素濃度のガスの一回吸気量を計算し、
前記決定された総流量と前記測定された流量との差である取込流量を時間積分することで、取込空気の一回吸気量を計算し、
前記1つまたは複数のノズルから吐出される前記高酸素濃度のガスの前記一回吸気量と前記取込空気の一回吸気量とに基づいて、前記患者の吸入酸素分画%FiO2を計算することをさらに含む、請求項1~6のいずれか1項に記載の方法。 - 前記コントローラが、前記計算で求められた%FiO2に基づいて、前記ベンチレータに接続された酸素濃縮器に信号を送信することをさらに含む、請求項7項に記載の方法。
- ベンチレータによって患者に送られる高酸素濃度のガスと環境大気の総流量に基づいて、前記ベンチレータに接続された酸素濃縮器を制御するための動作を行うためにプロセッサまたはプログラム可能な回路によって実行可能な命令が格納された非一時的なプログラム記憶媒体であって、
前記動作は、
前記ベンチレータに接続された患者用換気インタフェースの1つまたは複数のノズルによって吐出される前記高酸素濃度のガスの流量を測定し、前記患者用換気インタフェースは、前記1つまたは複数のノズルに加えて、前記患者に送るための追加の環境大気を取り込むための1つまたは複数の開口を含み、
前記患者用換気インタフェース内の圧力を測定し、
前記測定された流量と前記測定された圧力とに基づいて、前記総流量を決定することを含み、前記総流量は、前記1つまたは複数のノズルによって吐出される高酸素濃度のガスの流量と、前記1つまたは複数の開口から取り込まれる環境大気の取込流量とを含む、プログラム記憶媒体。 - 請求項9に記載の前記非一時的なプログラム記憶媒体と、
前記命令を実行するためのプロセッサまたはプログラム可能な回路と、
流量センサと、
圧力センサとを含み、
前記流量の測定は、前記流量センサと通信することを含み、
前記圧力の測定は、前記圧力センサと通信することを含む、ベンチレータ。 - 請求項10に記載の前記ベンチレータと、
前記ベンチレータに接続された酸素濃縮器とを含み、
前記動作は、
前記決定された総流量に基づいて、前記ベンチレータから前記酸素濃縮器に信号を送信することをさらに含む、換気システム。 - 前記酸素濃縮器は、前記ベンチレータから送信される前記信号に応答して制御信号を発生させるように動作可能なコントローラを含み、前記コントローラによって発生する前記制御信号は、前記酸素濃縮器のプロダクトタンクへの、加圧された環境大気の流入を選択的に可能にする、請求項11に記載の換気システム。
- 前記コントローラによって発生する前記制御信号は、前記酸素濃縮器のバルブユニットを動作させ、前記ベンチレータから送信される前記信号に従って前記プロダクトタンク内のあらかじめ設定された酸素濃度を維持する、請求項12に記載の換気システム。
- 前記コントローラによって発生する前記制御信号は、前記バルブユニットを動作させ、前記加圧された環境大気の流れが前記酸素濃縮器の1つまたは複数のシーブベッドを迂回できるようにする、請求項13に記載の換気システム。
- 前記コントローラによって発生する前記制御信号は、前記酸素濃縮器のコンプレッサを動作させ、前記ベンチレータから送信される前記信号に従って前記プロダクトタンク内のあらかじめ設定された酸素濃度を維持する、請求項12に記載の換気システム。
- 前記コントローラによって発生する前記制御信号は、前記酸素濃縮器の外部にあるコンプレッサを動作させ、前記ベンチレータから送信される前記信号に従って前記プロダクトタンク内のあらかじめ設定された酸素濃度を維持する、請求項12に記載の換気システム。
- 前記動作は、
前記ベンチレータに接続された患者用換気インタフェースの1つまたは複数のノズルによって吐出される高酸素濃度のガスの流量の複数の測定値のそれぞれについて、前記患者用換気インタフェース内の圧力の複数の測定値に対応する総流量の複数の測定値を格納することをさらに含み、
前記総流量の決定は、前記測定された圧力と、実測流量について格納された前記総流量の複数の測定値との比較結果に基づいて、前記総流量を推定することを含む、請求項11~16のいずれか1項に記載の換気システム。
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