JP6946400B2 - マルチモーダル・イメージングシステム、プローブ及び方法 - Google Patents
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Description
本願は、2012年11月19日に出願された米国仮特許出願第61/727,997号、2012年11月19日に出願された米国仮特許出願第61/728,006号、及び2013年2月4日に出願された代理人整理番号LLI-040の”Interface Devices, Systems and Methods for Multimodal Probes”という標題の特許出願について優先権の利益を主張するものであり、これら各文献の全体の開示は、参照することにより本明細書に組み込まれる。
図3Aには、動脈又は他の血管等のサンプルに対して画像データを収集するのに適した例示的なプローブチップ又はキャップ40が示されている。このプローブチップを、本明細書で説明する高速取得値及び速度を用いて、プローブの構成要素として回転させ且つ引き戻すことができる。プローブチップ40は、シース(図示せず)内に配置されており、一実施形態では、プローブ本体に取り付けられている。例えば、図1に示されるように、プローブチップ33は、シース31内に配置されており、プローブ本体28に接続されている。図3Aでは、光ファイバセクション43は、プローブ本体の一部である。
Claims (14)
- 壁を有する血管内の画像データを収集する画像データ収集装置の作動方法であって、当該作動方法は、
データ収集プローブのプローブチップを約100Hz〜約200Hzの範囲の回転速度で回転させるステップであって、前記プローブチップは、光波を反射するように構成された光学データ収集サブシステム及び音響波を反射するように構成された音響データ収集サブシステムを含む、回転させるステップと、
前記プローブチップを約18mm/秒〜約36mm/秒の範囲の速度で前記血管内を引き戻すステップと、
前記画像データ収集装置が、光ビーム導光器及び超音波トランスデューサそれぞれを用いて、前記光波及び前記音響波を送信するステップと、
前記光学データ収集サブシステム及び前記音響データ収集サブシステムが軸線方向に互いに重なり合わないようにし、且つ前記光波の中心軸線及び前記音響波の中心軸線が、前記軸線方向に約300〜約500ミクロンの範囲の距離で互いに離間するように、前記光学データ収集サブシステムと前記音響データ収集サブシステムとの間の軸方向変位を維持するステップと、
前記光波の前記中心軸線及び前記音響波の前記中心軸線が共通の基準点で所定の期間交わるように、前記回転させるステップ及び前記引き戻すステップを制御するステップと、
前記画像データ収集装置が、前記光ビーム導光器及び前記超音波トランスデューサをそれぞれ用いて、前記壁から反射される前記光波及び前記音響波を受信するステップと、
前記画像データ収集装置が、前記壁から受信した前記光波及び前記音響波に応答して、光コヒーレンス・トモグラフィ(OCT)データセット及び超音波データセットを取得するステップと、を含む、
作動方法。 - 前記データ収集プローブを提供するステップをさらに含み、前記データ収集プローブは、シース、前記プローブチップ、及び前記音響データ収集サブシステムへの1つ又は複数の導電体を含む、請求項1に記載の作動方法。
- 光信号及び音響信号を収集するときに、シースで散乱する光ビーム又は音響ビームのノイズ寄与を低減するステップをさらに含む、請求項1に記載の作動方法。
- 1つ又は複数の導電体を、螺旋状ツイストを有するツイストペア送信ラインとして構成するステップをさらに含む、請求項1に記載の作動方法。
- 前記螺旋状ツイストの均一な間隔によって、第2の導電体に対して第1の導電体の位置を対称的に回転させ、外部磁界から誘導されたノイズを除去又はキャンセルする、請求項4に記載の作動方法。
- 前記螺旋状ツイストのピッチが約0.5cm〜約1.5cmの間の範囲である、請求項4に記載の作動方法。
- 前記画像データ収集装置が、前記OCTデータセット、前記超音波データセット、又は前記OCTデータセットと超音波データセットとの両方を用いて、前記壁の断面の1つ又は複数の画像を生成するステップをさらに含む、請求項1に記載の作動方法。
- 前記OCTデータセット及び前記超音波データセットは、約6MHz〜約12MHzの範囲のサンプル取得速度で取得される、請求項1に記載の作動方法。
- 前記OCTデータセット及び前記超音波データセットは、約25kHz〜約50kHzの範囲のライン取得速度で取得される、請求項1に記載の作動方法。
- 前記所定の期間は約0.01秒〜約0.02秒の範囲である、請求項1に記載の作動方法。
- 前記所定の期間は心周期の約1.2%〜心周期の約2.4%の範囲である、請求項1に記載の作動方法。
- データ収集プローブを含む画像データ収集システムであって、
前記データ収集プローブは、
シースと、
光ファイバを含むプローブ本体と、
前記シース内に配置されたプローブチップと、を有しており、
前記プローブチップは、
裏当て材料と、
前記光ファイバと光通信する光学データ収集サブシステムであって、該光学データ収集サブシステムは、光学中心軸線を有する光ビームを方向付けるように構成されるビーム導光器を含み、該ビーム導光器は、前記裏当て材料で支持され、且つ前記光ファイバの長手方向軸線に対して垂直方向に約0°〜約20°の範囲の角度で前記光ビームを遠位方向に方向付けるように角度決めされる、光学データ収集サブシステムと、
前記裏当て材料の領域の上に配置される音響データ収集サブシステムであって、該音響データ収集サブシステムは、音響中心軸線を有する音響波を生成するように構成された超音波トランスデューサを含み、該トランスデューサは、前記光ファイバの前記長手方向軸線に対して垂直方向に5°〜15°の範囲の角度で前記音響波を遠位方向に方向付けるように角度決めされる、音響データ収集サブシステムと、を含み、
前記ビーム導光器及び前記超音波トランスデューサは、軸線方向に互いに重なり合わないようにし、且つ前記光ビームの前記光学中心軸線及び前記音響波の前記音響中心軸線が、前記軸線方向に約300〜約500ミクロンの範囲の距離で互いに離間するように、軸線方向に配置され、
前記ビーム導光器及び前記超音波トランスデューサは、約100Hz〜約200Hzの範囲のプローブ回転速度及び約18mm/秒〜約36mm/秒の範囲のデータ収集プローブの引戻し速度中に、前記光ビームの前記光学中心軸線及び前記音響波の前記音響中心軸線が共通の基準点で所定の期間交わるように位置付けされる、
画像データ収集システム。 - ボアを規定するトルクワイヤをさらに含んでおり、複数の導電体が所定のパターンで前記光ファイバの周りに巻き付けられており、前記導電体は前記音響データ収集サブシステムと電気通信しており、前記光ファイバに巻き付けられた前記導電体は前記ボア内に配置される、請求項12に記載の画像データ収集システム。
- 前記パターンは、約0.5cm〜約1.5cmの間の範囲の螺旋状ピッチを有する螺旋状パターンである、請求項13に記載の画像データ収集システム。
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US9949754B2 (en) | 2011-03-28 | 2018-04-24 | Avinger, Inc. | Occlusion-crossing devices |
AU2012262258B2 (en) | 2011-05-31 | 2015-11-26 | Lightlab Imaging, Inc. | Multimodal imaging system, apparatus, and methods |
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JP6031089B2 (ja) | 2012-03-26 | 2016-11-24 | テルモ株式会社 | プローブ及び画像診断装置 |
WO2013145689A1 (ja) * | 2012-03-28 | 2013-10-03 | テルモ株式会社 | プローブ及び画像診断装置 |
US9345398B2 (en) | 2012-05-14 | 2016-05-24 | Avinger, Inc. | Atherectomy catheter drive assemblies |
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