JP5307109B2 - 注入装置用の光学的偏位センサ - Google Patents
注入装置用の光学的偏位センサ Download PDFInfo
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- JP5307109B2 JP5307109B2 JP2010249215A JP2010249215A JP5307109B2 JP 5307109 B2 JP5307109 B2 JP 5307109B2 JP 2010249215 A JP2010249215 A JP 2010249215A JP 2010249215 A JP2010249215 A JP 2010249215A JP 5307109 B2 JP5307109 B2 JP 5307109B2
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Classifications
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- 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 ; Monitoring media flow to the body
- A61M5/16886—Means for controlling media flow to the body or for metering media to the body, e.g. drip meters, counters ; Monitoring media flow to the body for measuring fluid flow rate, i.e. flowmeters
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- 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
- A61M5/142—Pressure infusion, e.g. using pumps
- A61M5/145—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons
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- 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
- A61M5/142—Pressure infusion, e.g. using pumps
- A61M5/145—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons
- A61M5/1452—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons pressurised by means of pistons
- A61M5/1456—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons pressurised by means of pistons with a replaceable reservoir comprising a piston rod to be moved into the reservoir, e.g. the piston rod is part of the removable reservoir
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- 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
- A61M5/178—Syringes
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- A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
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- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
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- G01D5/32—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light
- G01D5/34—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells
- G01D5/347—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells using displacement encoding scales
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- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
- G01D5/32—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light
- G01D5/34—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells
- G01D5/347—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells using displacement encoding scales
- G01D5/34776—Absolute encoders with analogue or digital scales
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- A—HUMAN NECESSITIES
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- 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
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- A—HUMAN NECESSITIES
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- 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
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- A61M2205/3379—Masses, volumes, levels of fluids in reservoirs, flow rates
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- A—HUMAN NECESSITIES
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- 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
- A61M2205/60—General characteristics of the apparatus with identification means
- A61M2205/6063—Optical identification systems
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- Health & Medical Sciences (AREA)
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- Anesthesiology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Animal Behavior & Ethology (AREA)
- Biomedical Technology (AREA)
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- General Health & Medical Sciences (AREA)
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- Veterinary Medicine (AREA)
- Public Health (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
- External Artificial Organs (AREA)
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Description
本発明の好ましい実施形態に従って、平行移動するピストンを有するタイプの分配装置用の偏位センサが提供される。該センサはピストンに連結するプランジャロッドを備え、該プランジャロッドは特徴を符号化する符号化パターンを有する。光源は符号化パターンを照らし、そして、検出信号を基礎として、プロセッサが起点の基準位置に関するプランジャロッドの偏位を決定するように、検出アレーは照らされた符号化パターンから光を検出して、検出器信号を生成する。装置によって分配される物質の供給速度は、また決定され得る。加えて、符号化パターンは、例えば、分配装置によって供給される治療薬の異なった濃度によって特徴づけられるリザーバタイプを識別するのに役立つことができる。
(項目1)
平行移動するピストンを有する物質の供給装置用の偏位センサであって、
a. 特徴を符号化する符号化パターンを有するピストンに連結されたプランジャロッド;
b. 符号化パターンを照らす光源;
c. 照らされた符号化パターンから光を検出して、検出器信号を生成する検出器アレー;および
d. 少なくとも該検出器信号に基づく起点の基準位置と関連するプランジャロッドの偏位を決定するプロセッサ;
を備える偏位センサ。
(項目2)
上記符号化特徴は、プランジャロッドを通した調整された光学的透過の領域である、項目1に記載の偏位センサ。
(項目3)
上記符号化特徴は、プランジャロッドによる調整された光学的反射の領域である、項目1に記載の偏位センサ。
(項目4)
上記符号化特徴は、プランジャロッドを通した強化された透過の複数のスロットである、項目1に記載の偏位センサ。
(項目5)
上記各々のスロットは、距離のユニークな組合せによって、最も近い隣の各ペアから偏位される、項目4に記載の偏位センサ。
(項目6)
上記スロット間のどのような二つの隣接した間隔の組合せは、独自にリザーバの特徴を識別する、項目4に記載の偏位センサ。
(項目7)
上記リザーバの識別された特徴は、起点の位置と関連する偏位である、項目6に記載の偏位センサ。
(項目8)
上記リザーバの識別された特徴は、プランジャロッドが関係するリザーバの内容である、項目6に記載の偏位センサ。
(項目9)
上記リザーバの識別された特徴は、少なくとも一つの直径および壁の構成材料を含む、項目6に記載の偏位センサ。
(項目10)
上記光源は、プランジャロッドの領域を実質的に均一の光学強度で照明するための光学拡散器を含む、項目1に記載の偏位センサ。
(項目11)
上記特徴を符号化する符号化パターンは、プランジャロッドに沿って繰り返す、項目1に記載の偏位センサ。
(項目12)
a. 物質を含む円筒状内部容量を有するリザーバ;
b. 物質の測定された量を移動させて供給するためにリザーバの内部容量の中で運動の線形軸に沿ってピストンを推進するためのプランジャロッド;
c. 該ピストンの運動の線形軸と平行な方向にプランジャロッドに沿って配置された、特徴を符号化する符号化パターン;
d. 照らされた符号化パターンから光を検出して、検出器信号を生成するための検出器アレー;および
e. 少なくとも該検出器信号に基づく起点の基準位置と関連してプランジャロッドの偏位を決定するためのプロセッサ;を備えた供給装置。
(項目13)
上記符号化特徴は、プランジャロッドを通して調整された光学的透過の領域である、項目12に記載の供給装置。
(項目14)
上記符号化特徴は、プランジャロッドを通して強化された透過の複数のスロットである、項目12に記載の供給装置。
(項目15)
上記各々のスロットは、距離のユニークな組合せによって、最も近い隣の一対から偏位される、項目12に記載の供給装置。
(項目16)
1以上のリザーバのバージョンを有し、上記符号化パターンは、リザーバのバージョンを独自に決定する、項目12に記載の供給装置。
(項目17)
物質のリザーバの中で、運動の軸に沿って駆動するピストンを有する分配器によって、物質を分配する速度を測定する方法であって;
a. 該ピストンに連結されたプランジャロッドに配置した特長を符号化する符号化パターンを照明すること;
b. 照らされた符号化特徴から光を検出して、検出器信号を生成すること;および
c. .少なくとも検出器信号に基づく起点の基準位置と関連してプランジャロッドの偏位を決定すること;を包含する方法。
(項目18)
上記光を検出する工程が、照明された符号化特徴のイメージを得ることを更に含む、項目17に記載の方法。
(項目19)
上記偏位を決定する工程が、符号化特徴を通した光透過のピークの位置を決定することを更に含む、項目17に記載の方法。
(項目20)
上記各々の連続した検出器配列値を、n個のソフトウェア配列要素の各々の連続したグループに保存する工程を更に備える、項目17に記載の方法。
治療薬を患者の体内に供給するためのポンプの主要素は、図1に関して記載されている。
薬剤リザーバ11(典型的には円筒形状)は、ハウジング16内に保持され、供給管18および皮下注射針(図示せず)を介して患者に供給される液状薬剤を含む。そのリザーバに含まれる液状薬剤は、リザーバの軸と同軸方向8に沿って、ピストン30の線形運動によって、決定された速さでリザーバから押し出される。減速ギアドライブを介してスクリュードライブ14に連結されたモーター(見えない)によって、ピストンは、順番に、所定の速度で駆動されるプランジャロッド12によって動かされる。本発明は、ポンプ(例えばインスリンペン)以外の供給装置のために都合よく適用され得ると理解され、同様に、様々な流体の供給、または薬剤または他の物質であり得る物質の供給装置のために都合よく適用され得ると理解される。ポンプの、そして患者への治療薬の供給に関する説明は限定することなく、そして、実施形態だけとしてある。本発明の実施形態は、例えば、給水に浄化剤の供給のためにも、都合よく適用され得る。供給される流体は典型的には液体であるが、本願明細書において記載され、そして添付の特許請求の範囲でクレームしているように、他の物質の供給もまた本発明の範囲内である。
a. 供給精度をモニターすること;
b. リザーバ(例えばその内容に関して)の特徴を識別すること;
c. リザーバに残っている流体量を決定すること;および
d. リザーバの適切な負荷を検査すること。
例えば制限ストッパ)に動かされ得る。
本発明の好ましい実施形態において、ほぼ16μmのピクセル解像度については、検出器44は、512ピクセルの線形配列として理解される。検出器44は、プランジャロッド38の移動線に沿ってかつ平行に配置され、リードねじ40の端部で実質的に開始する。特に、集束光学素子が使用されないとき、検出器44がプランジャロッド38に非常に近くに配置されるのが好ましい。
、その結果、一つより多くないスロットがイメージセンサの視野の中にある場合、リザーバのバージョンは独自に識別され得る。
画像を作成するために、検出器44の全てのピクセルがリセットされる。それから、光が指定された時間発光するように光源42が発光する。可変の露出時間が採用され得、スロットが見られるときは、より長い時間が使われる、しかし、プランジャロッドの端部が見られるときには、より短い時間が使われる。スロットにおいては5mの露出時間が、ロッドの端部においては0.7mの露出時間が満足であるとわかった。配列のプロセッサ56によって保存され、一つ以上のアルゴリズムを使用して解釈される、各々のピクセルの値とともに、検出器44からの信号が読み込まれる。
Claims (18)
- 医療流体を含むための内部体積を有するリザーバと、
運動を有するピストンであって、該ピストンは、該医療流体を該リザーバから押し出させる、ピストンと、
光学センサであって、該光学センサは、基準ピストンに対する該ピストンの位置を決定するように構成され、該ピストンの位置は、該ピストンの任意の移動または非移動の後に、いつでも決定されることが可能である、光学センサと
を備える、医療流体分配装置。 - 前記ピストンに連結されたプランジャロッドをさらに備え、該プランジャロッドは、少なくとも1つの符号化特徴の符号化パターンを支持し、該符号化特徴は、少なくとも1つの光学透過特徴を含む、請求項1に記載の装置。
- 照明源をさらに備え、該照明源は、該照明源からの光が前記少なくとも1つの光学透過特徴に伝送されるように位置する、請求項2に記載の装置。
- 前記少なくとも1つの符号化特徴に伝送される光を検出するための少なくとも1つの検出器をさらに備える、請求項2に記載の装置。
- 前記少なくとも1つの符号化特徴は、前記プランジャロッドに刻み付けられたスロットである、請求項4に記載の装置。
- 前記少なくとも1つの符号化特徴は、穴である、請求項4に記載の装置。
- 前記ピストンに結合されたプランジャロッドをさらに備え、該プランジャロッドは、符号化特徴の符号化パターンを支持し、該符号化特徴は、複数の光学的透過特徴を含む、請求項1に記載の装置。
- 前記符号化特徴の互いからの間隔は、任意の2つの隣接する空間が固有の配列を形成するような間隔を規定する、請求項7に記載の装置。
- 前記ピストンに結合されたプランジャロッドをさらに備え、該プランジャロッドは、少なくとも1つの符号化特徴の符号化パターンを支持し、該符号化特徴は、少なくとも1つの反射特徴を含む、請求項1に記載の装置。
- 照明源をさらに備え、該照明源は、該照明源からの光が前記少なくとも1つの反射特徴に伝送されるように位置する、請求項9に記載の装置。
- 前記少なくとも1つの符号化特徴により反射される光を検出するための少なくとも1つの検出器をさらに備える、請求項9に記載の装置。
- 前記ピストンに結合されたプランジャロッドをさらに備え、該プランジャロッドは、符号化特徴の符号化パターンを支持し、該符号化特徴は、複数の反射特徴を含む、請求項1に記載の装置。
- 前記符号化特徴の互いからの間隔は、任意の2つの隣接する空間が固有の配列を形成するような間隔を規定する、請求項12に記載の装置。
- 医療流体を含むための内部体積を有するリザーバと、
運動を有するピストンであって、該ピストンは、該医療流体を該リザーバから押し出させる、ピストンと、
該ピストンに結合されたプランジャロッドであって、該プランジャロッドは、少なくとも1つの符号化特徴の符号化パターンを支持し、該符号化特徴は、少なくとも1つの反射特徴を含む、プランジャロッドと、
光学センサであって、該光学センサは、基準ピストンに対する該ピストンの位置を決定するように構成され、該ピストンの位置は、該ピストンの任意の移動または非移動の後に、いつでも決定されることが可能である、光学センサと
を備える、医療流体分配装置。 - 照明源をさらに備え、該照明源は、該照明源からの光が前記少なくとも1つの反射特徴に伝送されるように位置する、請求項14に記載の装置。
- 前記少なくとも1つの符号化特徴に伝送される光を検出するための少なくとも1つの検出器をさらに備える、請求項15に記載の装置。
- 前記プランジャロッドは、複数の反射特徴を含む、請求項14に記載の装置。
- 前記符号化特徴の互いからの間隔は、任意の2つの隣接する空間が固有の配列を形成するような間隔を規定する、請求項17に記載の装置。
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CN1671432B (zh) | 2010-05-12 |
JP4658599B2 (ja) | 2011-03-23 |
CN1671432A (zh) | 2005-09-21 |
DE60310233D1 (de) | 2007-01-18 |
US20180236167A1 (en) | 2018-08-23 |
CA2492983A1 (en) | 2004-01-29 |
US20040135078A1 (en) | 2004-07-15 |
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US9950110B2 (en) | 2018-04-24 |
US7498563B2 (en) | 2009-03-03 |
US20210154404A1 (en) | 2021-05-27 |
EP1526885B1 (en) | 2006-12-06 |
US20140039397A1 (en) | 2014-02-06 |
JP2013039450A (ja) | 2013-02-28 |
DE60310233T2 (de) | 2007-09-13 |
WO2004009163A1 (en) | 2004-01-29 |
US20090224145A1 (en) | 2009-09-10 |
US20200023125A1 (en) | 2020-01-23 |
US11690954B2 (en) | 2023-07-04 |
JP2005533568A (ja) | 2005-11-10 |
US8552361B2 (en) | 2013-10-08 |
AU2003256696A1 (en) | 2004-02-09 |
ATE347389T1 (de) | 2006-12-15 |
CA2492983C (en) | 2010-07-20 |
US10426889B2 (en) | 2019-10-01 |
EP1526885A1 (en) | 2005-05-04 |
AU2003256696B2 (en) | 2008-12-11 |
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