JPH11506823A - 静脈ライン空気検出システム - Google Patents
静脈ライン空気検出システムInfo
- Publication number
- JPH11506823A JPH11506823A JP9500538A JP50053897A JPH11506823A JP H11506823 A JPH11506823 A JP H11506823A JP 9500538 A JP9500538 A JP 9500538A JP 50053897 A JP50053897 A JP 50053897A JP H11506823 A JPH11506823 A JP H11506823A
- Authority
- JP
- Japan
- Prior art keywords
- volume
- pressure
- resonance frequency
- valve
- region
- 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.)
- Granted
Links
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/04—Analysing solids
- G01N29/12—Analysing solids by measuring frequency or resonance of acoustic waves
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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
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/168—Means for controlling media flow to the body or for metering media to the body, e.g. drip meters, counters
- A61M5/16804—Active flow controllers
- A61M5/16809—Active flow controllers by repeated filling and emptying of an intermediate volume
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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
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm rests
- A61M5/36—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm rests with means for eliminating or preventing injection or infusion of air into body
- A61M5/365—Air detectors
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/02—Analysing fluids
- G01N29/036—Analysing fluids by measuring frequency or resonance of acoustic waves
-
- 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
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M2005/1401—Functional features
- A61M2005/1402—Priming
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/024—Mixtures
- G01N2291/02433—Gases in liquids, e.g. bubbles, foams
Landscapes
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Pathology (AREA)
- Engineering & Computer Science (AREA)
- Biochemistry (AREA)
- Chemical & Material Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Acoustics & Sound (AREA)
- Veterinary Medicine (AREA)
- Vascular Medicine (AREA)
- Analytical Chemistry (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Animal Behavior & Ethology (AREA)
- Public Health (AREA)
- Emergency Medicine (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
Description
Claims (1)
- 【特許請求の範囲】 1.液体内の泡の存在を検出する方法であって、 一つの領域を有する音響システムを設け、その領域は、測定ガスを包含する 第一の部分と、液体を包含する第二の部分とを有し、その第一の部分の容積と第 二の部分の容積との和は一定容積になるようにし、 測定ガスの第一の圧力においてシステムの共振周波数を決定し、 測定ガスの圧力を第二の圧力へ変化させ、 第二の圧力においてシステムの共振周波数を決定し、 第一の圧力において測定された共振周波数と、第二の圧力において測定され た共振周波数とに基づいて、圧力の変化に起因して第一の部分容積が変化したか 否かを決定し、 第一の圧力における容積と第二の圧力における容積とが異なっているならば 、液体内の泡の存在を示す信号を発生することとを含む方法。 2.前記音響共振システムは、共振周波数に基づく前記領域の第一の部分の容積 の決定へ泡の存在が相当な影響を与えないように調整される請求項1に記載の方 法。 3.静脈注液流体源から静脈注液ラインを通じて患者へ至る流体の流量を制御す ると共に、その流体内の泡の存在を検出する方法であって、 前記ライン内に、測定ガスを包含する第一の部分と、前記ラインを通じて流 れる液体の区画を包含する第二の部分とを有する領域を設け、その第一の部分の 容積と第二の部分の容積との和は一定容積となり、前記領域は音響共振システム の一部分となり、前記領域は、流体源からの流れを制御する第一の弁と、患者へ の流れを制御する第二の弁とにより、前記ラインの残りの部分における圧力の影 響から分離可能であるようにし、 第二の弁を閉止し、且つ第一の弁を開放して、前記流体源から前記領域への 流通を可能とし、 液体が前記流体源から前記領域へ流れた後に、第一の弁を閉止して前記領域 を前記ラインにおける圧力の影響から分離し、 測定ガスの第一の圧力において前記システムの共振周波数を決定し、 第一の弁を閉止した後、測定ガスの圧力を第二の圧力へ変化させ、 第二の圧力において前記システムの共振周波数を決定し、 第一の圧力において測定された共振周波数と、第二の圧力において測定され た共振周波数とに基づいて、圧力の変化に起因して第一の部分の容積が変化した か否かを決定し、 圧力の変化に起因する容積の変化が検出されないならば、第二の弁を開放し て患者への流れを可能とし、容積の変化が検出されたならば、液体内の泡の存在 を示す信号を発生することとを含む方法。 4.液体内の泡の存在を示す前記信号に応答して、前記領域から前記流体源へ流 体を除去することを更に含む請求項3に記載の方法。 5.前記音響共振システムは、共振周波数に基づく前記領域の第一の部分の容積 の決定へ泡の存在が相当な影響を与えないように調整される請求項4に記載の方 法。 6.測定された共振周波数に基づいて、患者への流れが可能とするように第二の 弁が開放する前に、前記領域の第一の部分における測定ガスの容積を決定し、 流体の或る容積が患者へ流れた後に第二の弁を閉止し、 第二の弁が閉止した後に共振周波数を決定し、 第二の弁が閉止した後に決定された共振周波数に基づいて、第一の部分の容 積を決定し、 第二の弁が開放される前に決定された第一の部分の容積を、第二の弁が閉止 した後に決定された容積から減算することにより、患者へ投与された液体の容積 を決定することとを更に含む請求項4記載の方法。 7.前記音響共振システムは、共振周波数に基づく前記領域の第一の部分の容積 の決定へ泡の存在が相当な影響を与えないように調整されている請求項6に記載 の方法。 8.液体内の泡の存在を検出する装置であって、 外部の圧力の影響から分離された領域を有する音響共振システムであり、前 記領域は測定ガスを包含する第一の部分と、液体を包含する第二の部分とを有し 、その第一の部分の容積と第二の部分の容積との和は一定容積となる音響共 振システムと、 前記システムの共振周波数を検出する検出手段と、 前記測定システムにおける測定ガスの圧力を変化させる圧力変化手段と、 二つの異なる圧力において測定された共振周波数に基づいて、圧力の変化に 起因して第一の部分の容積が変化したか否かを決定すると共に、圧力の変化に起 因して第一の部分の容積が変化したならば、液体内の泡の存在を示す信号を発生 する手段とを備える装置。 9.前記音響共振システムが、共振周波数に基づく前記領域の第一の部分の容積 の決定へ泡の存在が相当な影響を与えないように調整されている請求項8に記載 の装置。 10.前記音響共振システムが、 後方チャンバと、 共振可能な質量を保持し、且つ前記後方チャンバを前記領域の第一の部分へ 接続するポートとを含み、 前記検出手段が、 前記音響共振システムへ様々な周波数にて音響エネルギを導入するスピーカ ーと、 前記スピーカーにより前記音響共振システムへ導入された音響エネルギに対 する前記システムの応答を検出するマイクロフォンとを含む請求項8に記載の装 置。 11.前記マイクロフォンが前記後方チャンバに連通し、且つ前記スピーカーが前 記後方チャンバの壁の一部分を形成する請求項10に記載の装置。 12.前記検出手段が、 サービスチャンバであり、前記スピーカーは、このサービスチャンバの壁の 一部分を形成して前記後方チャンバから前記サービースチャンバを隔てるサービ ースチャンバと、 前記サービスチャンバと連通するサービスマイクロフォンとを更に含む請求 項11記載の装置。 13.前記音響共振システムは、共振周波数に基づく前記領域の第一の部分の容積 の決定へ泡の存在が相当な影響を与えないように調整されている請求項12に記 載の装置。 14.静脈注液流体源から静脈注液ラインを通じて患者へ至る流体の流量を制御す ると共に、その流体内の泡の存在を検出する装置であって、 測定ガスを包含する第一の部分と、前記ラインを通じて流れる液体の区画を 包含する第二の部分とを有する領域であり、その第一の部分の容積と第二の部分 の容積との和は一定容積となり、前記領域は音響共振システムの一部分となり、 前記システムは前記領域の第一の部分における測定ガスの異なる容積についての 異なる共振周波数を有し、前記領域は、前記流体源からの流れを制御する第一の 弁と、患者への流れを制御する第二の弁とにより、前記ラインの残りの部分にお ける圧力の影響から分離可能である領域と、 前記システムの共振周波数を検出する検出手段と、 測定ガスの圧力を変化させる変化手段と、 前記弁と検出手段と変化手段とを制御する制御器であり、二つの異なる圧力 において測定された共振周波数に基づいて、圧力の変化に起因して第一の部分の 容積が変化したか否かを決定し、第一の部分の容積が圧力の変化によって変化す るならば、液体内の泡の存在を示す信号を発生する制御器とを備える装置。 15.前記制御器が、決定された第一の部分の容積に変化がないならば、第二の弁 に患者への流れを可能とさせる請求項14に記載の装置。 16.液体内の泡の存在を示す前記信号に応答して、前記領域から前記流体源へ流 体を除去する手段を更に含む請求項15に記載の装置。 17.前記音響共振システムは、共振周波数に基づく前記領域の第一の部分の容積 の決定へ泡の存在が相当な影響を与えないように調整されている請求項16に記 載の装置。 18.測定された共振周波数に基づいて、前記領域の第一の部分の容積を決定する 手段を更に含む請求項17記載の装置。 19.前記音響共振システムが、 後方チャンバと、 共振可能な質量を保持し、且つ前記後方チャンバを前記領域の第一の部分へ 接続するポートとを含み、 前記検出手段が、 前記音響共振システムへ様々な周波数にて音響エネルギを導入するスピーカ ーと、 前記スピーカーにより前記音響共振システムへ導入された音響エネルギに対 する前記システムの応答を検出するマイクロフォンとを含み、このマイクロフォ ンは前記後方チャンバと連通し、 前記スピーカーは前記後方チャンバの壁の一部分を形成する請求項18に記 載の装置。 20.前記検出手段が、 サービスチャンバであり、前記スピーカーは、このサービスチャンバの壁の 一部分を形成して前記後方チャンバから前記サービースチャンバを隔てるサービ ースチャンバと、 前記サービスチャンバと連通するサービスマイクロフォンとを更に含む請求 項19記載の装置。
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US08/477,380 US5641892A (en) | 1995-06-07 | 1995-06-07 | Intravenous-line air-detection system |
| US08/477,380 | 1995-06-07 | ||
| PCT/US1996/006615 WO1996041156A1 (en) | 1995-06-07 | 1996-05-09 | Intravenous-line air-detection system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH11506823A true JPH11506823A (ja) | 1999-06-15 |
| JP3584039B2 JP3584039B2 (ja) | 2004-11-04 |
Family
ID=23895686
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP50053897A Expired - Lifetime JP3584039B2 (ja) | 1995-06-07 | 1996-05-09 | 静脈ライン空気検出システム |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US5641892A (ja) |
| EP (1) | EP0830597B1 (ja) |
| JP (1) | JP3584039B2 (ja) |
| DE (1) | DE69633057T2 (ja) |
| WO (1) | WO1996041156A1 (ja) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPWO2005051463A1 (ja) * | 2003-11-25 | 2007-06-14 | 株式会社根本杏林堂 | 薬液注入装置 |
| JP2015073848A (ja) * | 2013-10-11 | 2015-04-20 | 株式会社メテク | 液体移送装置 |
| JP2022063841A (ja) * | 2013-05-23 | 2022-04-22 | ニューアイブイ メディカル コーポレーション | 空気検出および排除を備えた空気圧結合された流体制御システムおよびプロセス |
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| US6705319B1 (en) * | 2000-05-26 | 2004-03-16 | Purdue Research Foundation | Miniature acoustical guidance and monitoring system for tube or catheter placement |
| US7232430B2 (en) * | 2000-07-07 | 2007-06-19 | Mack Ventures, Inc. | Air-in-line and pressure detection |
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| ATE352334T1 (de) | 2001-05-18 | 2007-02-15 | Deka Products Lp | Infusionsvorrichtung für eine flüssigkeitspumpe |
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| US6985870B2 (en) | 2002-01-11 | 2006-01-10 | Baxter International Inc. | Medication delivery system |
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- 1996-05-09 WO PCT/US1996/006615 patent/WO1996041156A1/en not_active Ceased
- 1996-05-09 DE DE69633057T patent/DE69633057T2/de not_active Expired - Lifetime
- 1996-05-09 EP EP96915655A patent/EP0830597B1/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPWO2005051463A1 (ja) * | 2003-11-25 | 2007-06-14 | 株式会社根本杏林堂 | 薬液注入装置 |
| JP2022063841A (ja) * | 2013-05-23 | 2022-04-22 | ニューアイブイ メディカル コーポレーション | 空気検出および排除を備えた空気圧結合された流体制御システムおよびプロセス |
| JP2015073848A (ja) * | 2013-10-11 | 2015-04-20 | 株式会社メテク | 液体移送装置 |
Also Published As
| Publication number | Publication date |
|---|---|
| WO1996041156A1 (en) | 1996-12-19 |
| EP0830597A1 (en) | 1998-03-25 |
| DE69633057D1 (de) | 2004-09-09 |
| EP0830597B1 (en) | 2004-08-04 |
| JP3584039B2 (ja) | 2004-11-04 |
| DE69633057T2 (de) | 2005-09-08 |
| US5641892A (en) | 1997-06-24 |
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