JP2009527323A - 圧力駆動体のためのハードウェア構成 - Google Patents
圧力駆動体のためのハードウェア構成 Download PDFInfo
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- 239000007789 gas Substances 0.000 claims abstract description 88
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 74
- 239000001301 oxygen Substances 0.000 claims abstract description 74
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 74
- 230000003434 inspiratory effect Effects 0.000 claims abstract description 62
- 238000002156 mixing Methods 0.000 claims abstract description 23
- 238000009530 blood pressure measurement Methods 0.000 claims abstract description 12
- 230000004044 response Effects 0.000 claims abstract description 10
- 239000000203 mixture Substances 0.000 claims abstract description 8
- 239000003570 air Substances 0.000 claims description 38
- 230000029058 respiratory gaseous exchange Effects 0.000 claims description 18
- 230000001629 suppression Effects 0.000 claims description 18
- 238000009423 ventilation Methods 0.000 claims description 13
- 239000012080 ambient air Substances 0.000 claims description 3
- 238000011513 continuous positive airway pressure therapy Methods 0.000 description 7
- 230000000241 respiratory effect Effects 0.000 description 7
- 230000006870 function Effects 0.000 description 6
- 230000007246 mechanism Effects 0.000 description 5
- 230000000007 visual effect Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 206010021143 Hypoxia Diseases 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000012937 correction Methods 0.000 description 2
- 208000018875 hypoxemia Diseases 0.000 description 2
- 238000012806 monitoring device Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000004202 respiratory function Effects 0.000 description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 208000019693 Lung disease Diseases 0.000 description 1
- 208000007123 Pulmonary Atelectasis Diseases 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 229910001882 dioxygen Inorganic materials 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 210000004072 lung Anatomy 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000005399 mechanical ventilation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 210000002345 respiratory system Anatomy 0.000 description 1
- 208000023504 respiratory system disease Diseases 0.000 description 1
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Abstract
【選択図】 図1
Description
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(政府支援研究/開発)
不適用
本発明は、一般的には呼吸装置に関し、より特定的には患者における圧力を維持するための閉ループ制御システムにおいて圧力測定を利用する持続陽圧気道圧(continuous positive airway pressure:CPAP)人工呼吸システム用の圧力駆動体に関する。この圧力駆動体は、呼息抵抗を最小にして呼吸の仕事量(work)を減らすために流れ発生装置と連携して使用され得る。
本発明は、特に、従来技術のCPAP人工呼吸(ventilation)システムに関連する上記のニーズに取り組んでいる。より具体的には本発明の一態様では、持続陽圧気道圧(CPAP)人工呼吸を患者に送達するために使用され得るような圧力駆動体が提供される。好都合なことに、この圧力駆動体は、患者に隣接して配置される患者圧力センサであって、安定した仕様でCPAPを正確に制御するために、患者における圧力に応答する吸息流制御弁(inspiration flow control valve)へのフィードバックのために患者における圧力を継続して監視する患者圧力センサを組み込んでいる。
本発明の好適な実施形態を単に例示する目的のためであって、本発明を限定する目的のためではない図面を参照すると、図1は持続陽圧気道圧(CPAP)治療を患者に行うために使用され得るような人工呼吸システムの空気回路図である。人工呼吸システムは、患者に加圧ガスを供給するための圧力駆動体10を含む。図1には示されていないが、この人工呼吸システムはまた、Duquetteらによって2005年9月30日に出願された米国特許出願第11/241,303号に開示されていて、「流れ発生器患者回路のためのベンチュリ幾何学設計(Venturi Geometry Design for Flow-Generator Patient Circuit)」と題し、その全内容が参照によってここに明確に組み込まれているような、流れ発生器または流れマイクロ発生器(図示せず)患者回路も含むとしてもよい。
Claims (25)
- 患者に人工呼吸を施すための人工呼吸システム用の圧力駆動体であって、
ガス源と、
前記患者における圧力を測定するように動作する患者圧力センサと、
前記ガス源と前記患者との間に介在し、患者圧力測定値に応じて開閉するように動作する吸息流制御弁と、を備える、圧力駆動体。 - 前記患者圧力センサと前記吸息流制御弁は、前記患者圧力測定値に応じて制御システムコマンドを生成するように動作する閉ループ制御システムを備え、
前記吸息流制御弁は、前記患者における所望の圧力を生成するために前記制御システムコマンドに応じて開閉するように動作する、請求項1に記載の圧力駆動体。 - 前記患者圧力センサは圧力トランスデューサとして構成される、請求項1に記載の圧力駆動体。
- 前記制御システムは、前記患者における漏洩を検出するように動作する近接圧力センサを更に含む、請求項2に記載の圧力駆動体。
- 前記ガス源は、前記吸息流制御弁に酸素と空気の混合物を送達するように動作する、請求項1に記載の圧力駆動体。
- 前記患者に送達される前記ガス中の前記酸素濃度を測定するように動作する酸素センサを更に含む、請求項5に記載の圧力駆動体。
- 前記吸息流制御弁は電圧感知オリフィス(VSO)バルブとして構成される、請求項1に記載の圧力駆動体。
- 前記患者と前記吸息流制御弁との間に介在する安全弁を更に備える、請求項1に記載の圧力駆動体。
- 前記患者と前記吸息流制御弁との間に介在し、前記患者から前記吸息流制御弁への方向の前記流れを妨げるように動作する吸息抑止弁を更に備える、請求項8に記載の圧力駆動体。
- 前記患者を前記ガス源に相互接続し、前記吸息流制御弁に平行に配置された呼息システムであって、前記患者からの呼息ガスを放出するように動作する呼息システムを更に備える、請求項1に記載の圧力駆動体。
- 前記呼息システムは、呼息弁と、前記呼息弁を前記患者に相互接続する呼息抑止弁とを含み、前記呼息抑止弁は前記呼息弁から前記患者への方向の流れを防止するように動作する、請求項10に記載の圧力駆動体。
- 前記呼息システムは、前記呼息弁と前記患者との間に介在する電圧感知オリフィス(VSO)バルブを含む、請求項11に記載の圧力駆動体。
- 前記呼息システムは、前記VSOバルブと前記呼息弁との間に介在するドライブベンチュリを含み、前記ドライブベンチュリは前記ガス流を促進にするように動作する、請求項11に記載の圧力駆動体。
- 患者に人工呼吸を施すための持続陽圧気道圧(CPAP)人工呼吸システム用の圧力駆動体であって、前記圧力駆動体は、
ガス源と、
前記ガス源に流体的に接続され、前記ガス源からのガスの圧力を調整するように動作する圧力調整器と、
前記圧力調整器と前記患者との間に流体的に接続された吸息流制御弁と、前記吸息流制御弁へのフィードバックのために前記患者における圧力を測定するように動作する患者圧力センサとを備える、閉ループ制御システムと、を備えており、
前記吸息流制御弁は、患者圧力測定値に応じて開閉するように動作する、
圧力駆動体。 - 前記制御システムは、前記患者における漏洩を検出するように動作する近接圧力センサを更に含む、請求項14に記載の圧力駆動体。
- 前記ガス源は、前記患者に周囲空気と酸素の混合物を供給するように構成された酸素混合器を含む、請求項14に記載の圧力駆動体。
- 前記制御システムは、前記患者と前記吸息流制御弁との間に介在する近接圧力センサを更に含み、前記近接圧力センサは前記患者における漏洩を検出するように動作する、請求項14に記載の圧力駆動体。
- 前記患者と前記吸息流制御弁との間に介在し、前記患者に送達されるガスの圧力を制限するように動作する安全弁を更に備える、請求項14に記載の圧力駆動体。
- 前記患者と前記吸息流制御弁との間に介在し、前記患者から前記吸息流制御弁への方向の流れを防止するように動作する吸息抑止弁を更に備える、請求項14に記載の圧力駆動体。
- 前記CPAP人工呼吸システムは、
前記患者から前記吸息流制御弁に平行して延びる呼息システムを更に具備し、
前記呼息システムは、
前記患者に向かう方向の流れを防止するように構成された呼息抑止弁と、
前記呼息抑止弁を前記患者に相互接続し、前記患者からの呼息ガスを放出するように動作する呼息弁と、
前記呼息弁に接続され、前記呼息弁からの呼息ガスの流れを促進するように構成されたドライブベンチュリと、
前記ドライブベンチュリに接続され、前記圧力調整器と前記吸息流制御弁との間に相互接続され、前記呼息弁からの前記ガス流を調整するように動作する電圧感知オリフィス(VSO)バルブと、を含む、
請求項14に記載の圧力駆動体。 - 患者に人工呼吸を施すための人工呼吸システム用の圧力駆動体であって、
ハウジングと、
前記ハウジングに取り付けられた酸素ポートと空気ポートとを備えるガス源と、
前記ハウジングに配置され、前記患者における圧力を測定するように動作する患者圧力センサと、
前記ハウジングに配置され、前記ガス源に流体的に接続され、前記ガス源から流れるガスの圧力を調整するように動作する圧力調整器と、
前記ハウジングに配置され、前記ガス源と前記患者との間に介在する吸息流制御弁であって、前記患者における所望圧力を生成するために患者圧力測定値に応じて開閉するように動作する吸息流制御弁と、
前記患者に送達される酸素濃度の選択的調整を可能にするように構成された混合制御部と、
前記ガス源に接続され、前記混合制御部のセッティングに応じて前記吸息流制御弁に酸素と空気の混合物を送達するように動作する酸素混合器と、
前記患者に供給されるガス中の酸素濃度を測定するように動作する酸素センサと、
を備える、圧力駆動体。 - 前記酸素ポートに接続され、このポートから流れる酸素を濾過するように動作するフィルタを更に備える、請求項21に記載の圧力駆動体。
- 前記圧力駆動体に電力供給するように動作するバッテリパックを更に備える、請求項21に記載の圧力駆動体。
- 前記ハウジングに取り付けられ、前記圧力駆動体に電力供給するための外部電源に接続可能である電源供給ポートを更に備える、請求項21に記載の圧力駆動体。
- 前記患者に送達される前記ガスの所望圧力を指示するように動作する所望患者圧力指示器と、
前記患者圧力センサによって測定された前記患者に送達されるガスの現実患者圧力を指示するように動作する現実患者圧力指示器と、を更に備える、請求項21に記載の圧力駆動体。
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EP (1) | EP1986723B1 (ja) |
JP (1) | JP4938804B2 (ja) |
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Also Published As
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CN101437564A (zh) | 2009-05-20 |
EP1986723A2 (en) | 2008-11-05 |
CN101437564B (zh) | 2012-03-07 |
WO2007136411A3 (en) | 2008-07-03 |
JP4938804B2 (ja) | 2012-05-23 |
WO2007136411A2 (en) | 2007-11-29 |
EP1986723A4 (en) | 2011-11-23 |
AU2006344054B2 (en) | 2013-03-07 |
US20070193579A1 (en) | 2007-08-23 |
US7509957B2 (en) | 2009-03-31 |
AU2006344054A1 (en) | 2007-11-29 |
EP1986723B1 (en) | 2016-08-24 |
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