JP2000504977A - 埋め込み式血液ポンプ用の速度制御システム - Google Patents
埋め込み式血液ポンプ用の速度制御システムInfo
- Publication number
- JP2000504977A JP2000504977A JP10521179A JP52117998A JP2000504977A JP 2000504977 A JP2000504977 A JP 2000504977A JP 10521179 A JP10521179 A JP 10521179A JP 52117998 A JP52117998 A JP 52117998A JP 2000504977 A JP2000504977 A JP 2000504977A
- Authority
- JP
- Japan
- Prior art keywords
- pump
- current
- speed
- motor
- blood
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
- A61M60/40—Details relating to driving
- A61M60/403—Details relating to driving for non-positive displacement blood pumps
- A61M60/422—Details relating to driving for non-positive displacement blood pumps the force acting on the blood contacting member being electromagnetic, e.g. using canned motor pumps
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
- A61M60/10—Location thereof with respect to the patient's body
- A61M60/122—Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body
- A61M60/165—Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body implantable in, on, or around the heart
- A61M60/178—Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body implantable in, on, or around the heart drawing blood from a ventricle and returning the blood to the arterial system via a cannula external to the ventricle, e.g. left or right ventricular assist devices
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
- A61M60/20—Type thereof
- A61M60/205—Non-positive displacement blood pumps
- A61M60/216—Non-positive displacement blood pumps including a rotating member acting on the blood, e.g. impeller
- A61M60/226—Non-positive displacement blood pumps including a rotating member acting on the blood, e.g. impeller the blood flow through the rotating member having mainly radial components
- A61M60/232—Centrifugal pumps
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
- A61M60/20—Type thereof
- A61M60/205—Non-positive displacement blood pumps
- A61M60/216—Non-positive displacement blood pumps including a rotating member acting on the blood, e.g. impeller
- A61M60/237—Non-positive displacement blood pumps including a rotating member acting on the blood, e.g. impeller the blood flow through the rotating member having mainly axial components, e.g. axial flow pumps
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
- A61M60/50—Details relating to control
- A61M60/508—Electronic control means, e.g. for feedback regulation
- A61M60/538—Regulation using real-time blood pump operational parameter data, e.g. motor current
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
- A61M60/50—Details relating to control
- A61M60/508—Electronic control means, e.g. for feedback regulation
- A61M60/538—Regulation using real-time blood pump operational parameter data, e.g. motor current
- A61M60/546—Regulation using real-time blood pump operational parameter data, e.g. motor current of blood flow, e.g. by adapting rotor speed
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M2205/00—General characteristics of the apparatus
- A61M2205/33—Controlling, regulating or measuring
- A61M2205/3331—Pressure; Flow
- A61M2205/3334—Measuring or controlling the flow rate
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
- A61M60/10—Location thereof with respect to the patient's body
- A61M60/122—Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body
- A61M60/126—Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body implantable via, into, inside, in line, branching on, or around a blood vessel
- A61M60/148—Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body implantable via, into, inside, in line, branching on, or around a blood vessel in line with a blood vessel using resection or like techniques, e.g. permanent endovascular heart assist devices
Landscapes
- Health & Medical Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Engineering & Computer Science (AREA)
- Cardiology (AREA)
- Biomedical Technology (AREA)
- Anesthesiology (AREA)
- Mechanical Engineering (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- External Artificial Organs (AREA)
Abstract
Description
Claims (1)
- 【特許請求の範囲】 1.連続駆動される埋め込み式長期電気心臓補助血液ポンプの速度を患者の時間 変化生理的必要性に従って自動的に制御する方法であって、 a)ポンプ速度を定期的に増加させるステップと、 b)心室崩壊の切迫を検出するステップと、 c)前記切迫を検出したときはいつも、ポンプ速度を所定量だけ減少させるス テップと を備えることを特徴とする方法。 2.前記定期的なポンプ速度増加ステップは、ほぼ10秒間隔で行われることを 特徴とする請求項1に記載の方法。 3.前記定期的なポンプ速度増加ステップは、患者のほぼ12回の心拍動毎に行 われることを特徴とする請求項1に記載の方法。 4.前記検出ステップは、 i) 前記血液ポンプのモータが引き込む電流を測定するステップと、 ii) 前記電流のスペクトル解析表現を継続的に計算するステップと、 iii)前記フーリエ級数の第2高調波項の振幅が所定レベルを超えたとき、 検出指示を行うステップと を含むことを特徴とする請求項1に記載の方法。 5.前記検出ステップは、 i) 前記血液ポンプのモータが引き込む電流を測定するステップと、 ii) 前記電流を平均化するステップと、 iii)前記電流が前記平均値より高い所定レベルを超えたとき、検出表示を 行うステップと を含むことを特徴とする請求項1に記載の方法。 6.前記検出ステップは、 i) 前記血液ポンプのモータが引き込む電流を測定するステップと、 ii) 前記電流測定値から前記ポンプを通る血液流量を計算するステップと 、 iii)ポンプ速度に対応した前記流量の導関数を計算するステップと、 iv) 前記導関数が所定の最小値より低くなったとき、検出表示を行うステ ップと を含むことを特徴とする請求項1に記載の方法。 7.Qを流量、Iをモータ電流、ωをポンプ速度、KB、B、J、aoおよびal を前記ポンプおよびモータに対応した定数としたとき、前記流量は前記電流測定 値から式: によって計算されることを特徴とする請求項6に記載の方法。 8.前記検出ステップは、 i) 前記ポンプのモータが引き込む電流を測定するステップと、 ii) 前記ポンプの速度が変化するとき、速度に対応した前記電流の導関数 を計算するステップと、 iii)前記導関数が所定レベルを超えたとき、検出表示を行うステップと を含むことを特徴とする請求項1に記載の方法。 9.自動速度制御システムを備えた埋め込み式電気血液ポンプを通る血液流量不 足を検出する方法であって、 a)前記血液ポンプのモータが引き込む電流を測定するステップと、 b)前記測定電流および前記ポンプの速度から血液流量を計算するステップ と、 c)前記計算血液流量が所定の最小値より低くなったとき、表示を行うステッ プと を備えることを特徴とする方法。 10.前記ポンプ速度は速度設定信号に応答し、Qを流量、Iをモータ電流、ω をポンプ速度、KB、B、J、a0およびa1を前記ポンプのモータに対応した定 数としたとき、前記流量は式:によって計算されることを特徴とする請求項9に記載の方法。 11.長期心臓補助を患者の生理的補助必要性に従って自動的に制御するシステ ムであって、 a)一定のモータ速度に対して電流引き込み量が負荷に伴って変化する埋め込 み式電気血液ポンプと、 b)前記モータ速度を設定信号によって決定された設定レベルに維持するよう に構成された速度制御装置と、 c)前記設定信号の最適値を患者の生理的必要量の関数として定期的に計算す るように構成されたマイクロプロセッサとを備え、 前記計算は、前記マイクロプロセッサへの唯一の可変入力としての前記電流引 き込み量に基づいて行われることを特徴とするシステム。 12.前記定期的設定信号計算は、ほぼ10秒毎に行われることを特徴とする請 求項11に記載のシステム。 13.前記定期的設定信号計算は、患者のほぼ12回の心拍動毎に行われること を特徴とする請求項11に記載のシステム。 14.前記マイクロプロセッサはさらに、流量を表す値を計算するように構成さ れており、前記値は前記電流引き込み量から計算されることを特徴とする請求項 11に記載のシステム。 15.前記マイクロプロセッサはさらに、前記血液ポンプを通る所定の最小血液 流量によって下限が定められ、弛緩拡張期に発生する心室吸引によって上限が定 められる範囲内に前記設定レベルを維持するように構成されていることを特徴と する請求項11に記載のシステム。 16.Qを流量、Iをモータ電流、ωをポンプ速度、KB、B、J、a0およびa1 を前記ポンプに対応した定数としたとき、前記流量の値は前記電流引き込み量 から式:によって計算されることを特徴とする請求項11に記載のシステム。 17.前記マイクロプロセッサはさらに、患者の心室崩壊切迫状態が検出される まで、前記設定信号を繰り返し増加させ、その検出ときに前記設定信号を所定量 だけ減少させることによって、前記最適設定信号を定期的に計算するように構成 されているこを特徴とする請求項11に記載のシステム。 18.前記マイクロプロセッサは、 i) 前記血液ポンプのモータが引き込む電流を測定し、 ii) 前記電流のスペクトル解析表現を継続的に計算し、 iii)前記スペクトル解析表現の第2高調波項の振幅が所定レベルを超えた とき、検出指示を行うことによって前記心室崩壊切迫状態を検出する ことを特徴とする請求項17に記載のシステム。 19.前記マイクロプロセッサは、 i) 前記血液ポンプのモータが引き込む電流を測定し、 ii) 前記電流を平均化し、 iii) 前記電流が前記平均値より高い所定レベルを超えたとき、検出指示を 行うことによって心室崩壊切迫状態を検出する ことを特徴とする請求項17に記載のシステム。 20.前記マイクロプロセッサは、 i) 前記電流引き込み量を測定し、 ii) 前記電流引き込み量から血液流量を表す値を計算し、 iii) 前記設定信号が増加するとき、前記設定信号に対応した前記血液流量 の導関数を計算し、 iv) 前記導関数が所定の値より低くなったとき、検出指示を行うことによ って前記心室崩壊切迫状態を検出する ことを特徴とする請求項17に記載のシステム。 21.ブラシレス直流モータによって駆動される埋め込み式電気血液ポンプにお いて、ポンプ速度およびモータ電流のみが継続的に確認可能な可変パラメータで あるとき、前記ポンプを通る血液流量を決定する方法であって、 a)前記ポンプ速度を表す第1信号を発生するステップと、 b)前記モータ電流を表す第2信号を発生するステップと、 c)Qを流量、Iをモータ電流、ωをポンプ速度、KB、B、J、a0およびa1 を前記ポンプに対応した定数としたとき、関係式: をリアルタイムで繰り返し計算することによって前記血液流量を前記信号から決 定するステップと を備えることを特徴とする方法。 22.ブラシレス直流モータによって駆動される埋め込み式電気血液ポンプと組 み合わされて、前記ポンプを通る血液流量をポンプ速度およびモータ電流の関数 として、Qを流量、Iをモータ電流、ωをポンプ速度、KB、B、J、a0および a1を前記ポンプに対応した定数としたときに式: によって繰り返し計算するように構成されたことを特徴とするマイクロプロセッ サ。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/740,749 US5888242A (en) | 1996-11-01 | 1996-11-01 | Speed control system for implanted blood pumps |
US08/740,749 | 1996-11-01 | ||
PCT/IB1997/001501 WO1998019624A2 (en) | 1996-11-01 | 1997-10-31 | Speed control system for implanted blood pumps |
Publications (1)
Publication Number | Publication Date |
---|---|
JP2000504977A true JP2000504977A (ja) | 2000-04-25 |
Family
ID=24977911
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10521179A Ceased JP2000504977A (ja) | 1996-11-01 | 1997-10-31 | 埋め込み式血液ポンプ用の速度制御システム |
Country Status (9)
Country | Link |
---|---|
US (2) | US5888242A (ja) |
EP (1) | EP0877633B1 (ja) |
JP (1) | JP2000504977A (ja) |
AT (1) | ATE299721T1 (ja) |
AU (1) | AU713592B2 (ja) |
CA (1) | CA2241888C (ja) |
DE (1) | DE69733746T2 (ja) |
ES (1) | ES2243987T3 (ja) |
WO (1) | WO1998019624A2 (ja) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005518503A (ja) * | 2002-02-21 | 2005-06-23 | テルモ カーディオバスキュラー システムズ コーポレイション | 液体ポンプを制御する方法および装置 |
JP2010517734A (ja) * | 2007-02-09 | 2010-05-27 | マクヴエート・カルデイオプルモナリー・アクチエンゲゼルシヤフト | ポンプにより生じる血液循環を監視しかつ最適化する方法及び装置 |
JP2010119859A (ja) * | 2010-01-15 | 2010-06-03 | San Medical Gijutsu Kenkyusho:Kk | 血液ポンプの流量推定方法 |
JP2012519034A (ja) * | 2009-02-27 | 2012-08-23 | ソラテック コーポレーション | 制御された離脱を伴う血液ポンプシステム |
JP2012519035A (ja) * | 2009-02-27 | 2012-08-23 | ソラテック コーポレーション | 大動脈弁の癒着防止 |
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US6042605A (en) * | 1995-12-14 | 2000-03-28 | Gore Enterprose Holdings, Inc. | Kink resistant stent-graft |
US5888242A (en) * | 1996-11-01 | 1999-03-30 | Nimbus, Inc. | Speed control system for implanted blood pumps |
AUPO902797A0 (en) * | 1997-09-05 | 1997-10-02 | Cortronix Pty Ltd | A rotary blood pump with hydrodynamically suspended impeller |
US6048363A (en) * | 1997-05-13 | 2000-04-11 | Nagyszalanczy; Lorant | Centrifugal blood pump apparatus |
US6250880B1 (en) * | 1997-09-05 | 2001-06-26 | Ventrassist Pty. Ltd | Rotary pump with exclusively hydrodynamically suspended impeller |
US6889082B2 (en) * | 1997-10-09 | 2005-05-03 | Orqis Medical Corporation | Implantable heart assist system and method of applying same |
US6135943A (en) * | 1998-08-07 | 2000-10-24 | Cardiac Assist Technologies, Inc. | Non-invasive flow indicator for a rotary blood pump |
AUPP995999A0 (en) * | 1999-04-23 | 1999-05-20 | University Of Technology, Sydney | Non-contact estimation and control system |
AUPQ090499A0 (en) | 1999-06-10 | 1999-07-01 | Peters, William S | Heart assist device and system |
US7138776B1 (en) | 1999-07-08 | 2006-11-21 | Heartware, Inc. | Method and apparatus for controlling brushless DC motors in implantable medical devices |
DE60107401T2 (de) * | 2000-03-27 | 2005-11-24 | The Cleveland Clinic Foundation, Cleveland | Chronisches leistungssteuerungssystem für rotodynamische blutpumpe |
US6540658B1 (en) | 2000-05-30 | 2003-04-01 | Abiomed, Inc. | Left-right flow control algorithm in a two chamber cardiac prosthesis |
US6527698B1 (en) | 2000-05-30 | 2003-03-04 | Abiomed, Inc. | Active left-right flow control in a two chamber cardiac prosthesis |
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US20050159639A1 (en) * | 2002-05-15 | 2005-07-21 | Mikhail Skliar | Physiologically based control system and method for using the same |
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AU2003265729B2 (en) * | 2002-09-30 | 2007-10-18 | Thoratec Corporation | Physiological demand responsive control system |
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AU2002952691A0 (en) | 2002-11-15 | 2002-11-28 | Sunshine Heart Company Pty Ltd | Heart assist device utilising aortic deformation |
AU2003903726A0 (en) * | 2003-07-18 | 2003-07-31 | Ventracor Limited | A device for detecting heart pumping state |
AU2003904032A0 (en) * | 2003-08-04 | 2003-08-14 | Ventracor Limited | Improved Transcutaneous Power and Data Transceiver System |
US7682301B2 (en) * | 2003-09-18 | 2010-03-23 | Thoratec Corporation | Rotary blood pump |
EP1670524A4 (en) * | 2003-10-09 | 2012-12-26 | Thoratec Corp | WHEEL |
GB2423028B (en) * | 2003-10-30 | 2007-12-19 | Sunshine Heart Co Pty Ltd | A wrap |
EP3028739A1 (en) * | 2003-10-31 | 2016-06-08 | Sunshine Heart Company Pty Ltd | Synchronisation control system |
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- 1997-10-31 ES ES97912412T patent/ES2243987T3/es not_active Expired - Lifetime
- 1997-10-31 DE DE69733746T patent/DE69733746T2/de not_active Expired - Lifetime
- 1997-10-31 AT AT97912412T patent/ATE299721T1/de not_active IP Right Cessation
- 1997-10-31 CA CA002241888A patent/CA2241888C/en not_active Expired - Fee Related
- 1997-10-31 WO PCT/IB1997/001501 patent/WO1998019624A2/en active IP Right Grant
- 1997-10-31 EP EP97912412A patent/EP0877633B1/en not_active Expired - Lifetime
- 1997-10-31 JP JP10521179A patent/JP2000504977A/ja not_active Ceased
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Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005518503A (ja) * | 2002-02-21 | 2005-06-23 | テルモ カーディオバスキュラー システムズ コーポレイション | 液体ポンプを制御する方法および装置 |
JP2010517734A (ja) * | 2007-02-09 | 2010-05-27 | マクヴエート・カルデイオプルモナリー・アクチエンゲゼルシヤフト | ポンプにより生じる血液循環を監視しかつ最適化する方法及び装置 |
KR101495932B1 (ko) | 2007-02-09 | 2015-02-25 | 마쿠에트 카디오폴머너리 아게 | 펌프에 의해 작동되는 혈액 순환흐름을 모니터링 하여 최적화시키는 방법 및 장치 |
JP2012519034A (ja) * | 2009-02-27 | 2012-08-23 | ソラテック コーポレーション | 制御された離脱を伴う血液ポンプシステム |
JP2012519035A (ja) * | 2009-02-27 | 2012-08-23 | ソラテック コーポレーション | 大動脈弁の癒着防止 |
JP2010119859A (ja) * | 2010-01-15 | 2010-06-03 | San Medical Gijutsu Kenkyusho:Kk | 血液ポンプの流量推定方法 |
Also Published As
Publication number | Publication date |
---|---|
AU4963197A (en) | 1998-05-29 |
CA2241888A1 (en) | 1998-05-14 |
DE69733746D1 (de) | 2005-08-25 |
WO1998019624A3 (en) | 1998-10-08 |
EP0877633A4 (en) | 2001-03-28 |
EP0877633B1 (en) | 2005-07-20 |
EP0877633A2 (en) | 1998-11-18 |
CA2241888C (en) | 2001-09-11 |
US6066086A (en) | 2000-05-23 |
US5888242A (en) | 1999-03-30 |
ES2243987T3 (es) | 2005-12-01 |
AU713592B2 (en) | 1999-12-09 |
DE69733746T2 (de) | 2006-06-08 |
WO1998019624A2 (en) | 1998-05-14 |
ATE299721T1 (de) | 2005-08-15 |
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