JP2009514639A - 医療装置用の調節可能な静電容量を有する共振器 - Google Patents
医療装置用の調節可能な静電容量を有する共振器 Download PDFInfo
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/20—Arrangements or instruments for measuring magnetic variables involving magnetic resonance
- G01R33/28—Details of apparatus provided for in groups G01R33/44 - G01R33/64
- G01R33/285—Invasive instruments, e.g. catheters or biopsy needles, specially adapted for tracking, guiding or visualization by NMR
- G01R33/286—Invasive instruments, e.g. catheters or biopsy needles, specially adapted for tracking, guiding or visualization by NMR involving passive visualization of interventional instruments, i.e. making the instrument visible as part of the normal MR process
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/20—Arrangements or instruments for measuring magnetic variables involving magnetic resonance
- G01R33/28—Details of apparatus provided for in groups G01R33/44 - G01R33/64
- G01R33/32—Excitation or detection systems, e.g. using radio frequency signals
- G01R33/36—Electrical details, e.g. matching or coupling of the coil to the receiver
- G01R33/3628—Tuning/matching of the transmit/receive coil
Abstract
Description
Claims (25)
- 供給可能な装置を検出する共振器システムであって、
調節可能な静電容量と、前記調節可能な静電容量と直列状態のインダクタコイルと、前記調節可能な静電容量を制御して様々な特定の静電容量値を入手できる調節可能な静電容量制御装置と、を含むLC共振器回路を有する共振器装置と、
前記インダクタコイルの少なくとも一部が前記供給可能な装置の少なくとも一部によって取り囲まれた空間を取り囲むように、前記共振器装置と共に配置された供給可能な装置と、
を有することを特徴とする共振器システム。 - 前記供給可能な装置は、埋植可能な医療装置であり、
前記共振器装置は、前記調節可能な静電容量制御装置によって使用される電力をフィールドから生成可能である電源を含んでおり、前記フィールドは、電磁場及び交流磁場を含む群から選択される請求項1記載の共振器システム。 - 前記調節可能な静電容量は、コンデンサ及びバラクタを並列状態において含む請求項1又は2に記載の共振器システム。
- 前記共振器装置は、前記LC共振器回路の経路を通じた電流の流れを検知可能である電流センサを含む請求項1〜3の中のいずれか一項記載の共振器システム。
- 前記共振器装置は、前記調節可能な静電容量の両端の電位差を検知可能である電圧センサを含む請求項1〜4の中のいずれか一項記載の共振器システム。
- 前記インダクタコイルの少なくとも一部は、調節可能な半径を具備しており、
前記インダクタコイルの少なくとも一部は、埋植可能な医療装置の通路の少なくとも一部を取り囲んでいる請求項1〜5の中のいずれか一項記載の共振器システム。 - 前記埋植物可能な医療装置は、
バルーン拡張型ステントと、
自己拡張型ステントと、
グラフトと、
シャントと、
大静脈フィルタと、
を含む群から選択された永久的に埋植可能な医療装置である請求項6記載の共振器システム。 - 前記埋植可能な医療装置は、
ガイドカテーテルと、
ガイドワイヤと、
ステント供給用のカテーテルと、
ステントを伴わない拡張用のカテーテルと、
を含む群から選択された一時的に埋植可能な医療装置である請求項6記載の共振器システム。 - 前記供給可能な装置は、一時的に埋植可能な医療装置であり、
前記共振器装置は、前記一時的に埋植可能な医療装置の内部に位置している請求項1記載の共振器システム。 - 調節可能な静電容量と直列状態のインダクタコイルを含む共振器回路と、
異なる強度の磁場に応答して、前記調節可能な静電容量を共振静電容量に自動的に調節できる調節可能な静電容量制御装置と、
前記調節可能な静電容量に接続された電源と、
埋植可能な医療装置であって、前記埋植可能な医療装置の少なくとも一部は、前記インダクタコイルによって取り囲まれている、埋植可能な医療装置と、
を有することを特徴とする共振器システム。 - 少なくとも部分的に、前記共振器回路に接続された並列コンデンサの数を変更することにより、前記調節可能な静電容量を手動で調節するセレクタを含む請求項10記載の共振器システム。
- 前記調節可能な静電容量は、並列状態にあると共に前記共振器回路に接続可能であるコンデンサを含んでおり、
前記調節可能な静電容量制御装置は、少なくとも部分的に、前記共振器回路に接続された前記並列コンデンサの数を変更することにより、前記調節可能な静電容量を自動的に調節する請求項10記載の共振器システム。 - 前記調節可能な静電容量は、前記並列コンデンサに並列であると共に前記共振器回路に接続可能であるバラクタを含んでおり、
前記調節可能な静電容量制御装置は、少なくとも部分的に、前記バラクタの静電容量を調節することにより、前記調節可能な静電容量を自動的に調節する請求項12記載の共振器システム。 - プロセッサに接続されていると共に、
磁束センサと、
前記調節可能な静電容量の両端に接続された電圧センサと、
前記共振器回路の経路に沿って接続された電流センサと、
を含む群から選択されたセンサを含む請求項10〜13の中のいずれか一項記載の共振器システム。 - 前記電源は、
前記インダクタコイルと、
コイルと、
電池と、
コンデンサと、
第2共振器回路と、
を含む群から選択される請求項10〜14の中のいずれか一項記載の共振器システム。 - インダクタコイルの少なくとも一部が、供給可能な装置の少なくとも一部を取り囲むように、調節可能な静電容量と直列状態の前記インダクタコイルを有する共振器回路を、身体の管腔内に供給できる前記供給可能な装置に提供する段階と、
前記共振器回路が特定の磁場内において共振することになる共振静電容量を決定する段階と、
前記調節可能な静電容量を前記管腔内において前記共振静電容量に調節する段階と、
を有することを特徴とする方法。 - 前記共振静電容量を決定する段階は、前記特定の磁場の既知のフラックス及び前記共振器回路の既知のインダクタンスに基づいて前記共振器回路の前記共振静電容量を算出する段階を含む請求項16記載の方法。
- 前記共振静電容量を決定する段階は、
前記調節可能な静電容量を既知の静電容量に調節する段階と、
既知の静電容量及び前記特定の磁場の既知のフラックスに基づいて、前記共振器回路のインダクタンスを算出する段階と、
前記既知のフラックス及び前記共振器回路の前記算出されたインダクタンスに基づいて、前記共振器回路の前記共振静電容量を算出する段階と、
を含む請求項16記載の方法。 - 前記共振静電容量を決定する段階は、
前記特定の磁場のフラックスを検知する段階と、
前記検知したフラックス及び前記共振器回路の既知のインダクタンスに基づいて、前記共振器回路の前記共振静電容量を算出する段階と、
を含む請求項16記載の方法。 - 前記共振静電容量を決定する段階は、
前記特定の磁場のフラックスを検知する段階と、
前記調節可能な静電容量を既知の静電容量に調節する段階と、
前記既知の静電容量及び前記特定の磁場の検知されたフラックスに基づいて、前記共振器回路のインダクタンスを算出する段階と、
前記検知されたフラックス及び前記共振器回路の前記算出されたインダクタンスに基づいて、前記共振器回路の前記共振静電容量を算出する段階と、
を含む請求項16記載の方法。 - 前記共振静電容量を決定する段階は、
前記調節可能な静電容量を特定の静電容量に調節する段階と、
前記調節可能な静電容量の両端の電圧を検知する段階と、
前記調節段階及び前記検知段階を反復することにより、前記調節可能な静電容量の両端の前記電圧が前記特定の磁場において前記調節可能な静電容量によって取得可能な最大電圧である特定の静電容量を決定する段階と、
を含む請求項16記載の方法。 - 前記共振静電容量を決定する段階は、
前記調節可能な静電容量を特定の静電容量に調節する段階と、
前記特定の静電容量において前記共振器回路を通じた電流を検知する段階と、
前記調節段階及び前記検知段階を反復することにより、前記共振器回路を通じた前記電流が前記特定の磁場において前記調節可能な静電容量によって取得可能な最大電流である特定の静電容量を決定する段階と、
を含む請求項16記載の方法。 - 調節可能な静電容量と直列状態のインダクタコイルを有する共振器回路と、
異なる強度の磁場に応答して、前記調節可能な静電容量を共振静電容量に自動的に調節できる調節可能な静電容量制御装置と、
を含む共振器装置を製造する段階と、
前記インダクタコイルの少なくとも一部が医療装置の少なくとも一部を取り囲むように、前記共振器装置を前記医療装置に接続する段階と、
を有することを特徴とする方法。 - 前記共振器装置を製造する段階は、前記コイルが、調節可能な半径を具備するように、柔軟な導電材料から前記インダクタコイルを製造する段階を含んでおり、
前記共振器を接続する段階は、前記調節可能な半径が、ステントの拡張に伴って増大できるように、前記インダクタコイルを前記ステントの周りに固定する段階を含む請求項23記載の方法。 - 前記共振器を接続する段階は、前記共振器装置をカテーテルの遠端内に固定する段階を含む請求項23又は24に記載の方法。
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US11/270,417 US7423496B2 (en) | 2005-11-09 | 2005-11-09 | Resonator with adjustable capacitance for medical device |
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PCT/US2006/041736 WO2007055914A1 (en) | 2005-11-09 | 2006-10-27 | Resonator with adjustable capacitance for medical device |
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KR20220000063A (ko) * | 2020-06-25 | 2022-01-03 | 아주대학교산학협력단 | 의료기기용 확장부재의 측정 시스템 및 그 방법 |
KR102493481B1 (ko) | 2020-06-25 | 2023-01-31 | 아주대학교산학협력단 | 의료기기용 확장부재의 측정 시스템 및 그 방법 |
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WO2007055914A1 (en) | 2007-05-18 |
EP1946136A1 (en) | 2008-07-23 |
US20070106151A1 (en) | 2007-05-10 |
EP1946136B1 (en) | 2013-05-22 |
CA2629054A1 (en) | 2007-05-18 |
US8046048B2 (en) | 2011-10-25 |
US20080290958A1 (en) | 2008-11-27 |
US7423496B2 (en) | 2008-09-09 |
JP5172690B2 (ja) | 2013-03-27 |
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