JP2021520899A - Emrを用いた組織治療のための回折光学 - Google Patents
Emrを用いた組織治療のための回折光学 Download PDFInfo
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Abstract
Description
で表されるものより長い。この式ではλは特性波長、NAは開口数を表す。
Claims (22)
- レーザビームから複数の一次ビームを生成することと、
前記複数の1次ビームの少なくとも第1一次ビームから、第1二次ビームと第2二次ビームを生成することと、
を備えた方法であって、
前記第1二次ビームを標的組織内の第1焦点領域に、前記第2二次ビームを前記標的組織内の第2焦点領域に集束させ、前記第1焦点領域が前記標的組織の表面から第1深度に位置し、前記第2焦点領域が前記標的組織の前記表面の前記第1深度とは異なる第2深度に位置する方法。 - 第1二次ビームが、前記第1焦点領域において第1プラズマを発生させるように構成され、前記第2二次ビームが、前記第2焦点領域において第2プラズマを発生させるように構成されている、請求項1に記載の方法。
- 前記第1焦点領域が前記第1深度から前記第2深度へ延在する、請求項1に記載の方法。
- 前記複数の一次ビームの第2一次ビームから第3二次ビーム及び第4二次ビームを生成することと、
前記第3二次ビームを前記標的組織内の第3焦点領域に、前記第4二次ビームを第4焦点領域に集束させることと、
をさらに備える、請求項3に記載の方法。 - 前記第3二次ビームが、前記第3焦点領域においてプラズマを発生させるように構成され、前記第4二次ビームが、前記第4焦点領域においてプラズマを発生させるように構成されている、
請求項4に記載の方法。 - 前記第3焦点領域を前記標的組織の前記表面から前記第1深度の所に、前記第4焦点領域を前記標的組織の前記表面から前記第2深度の所に位置させるために、前記標的組織の前記表面を歪めることをさらに備える、
請求項5に記載の方法。 - 前記第1及び前記第2二次ビームが、マルチレンズアレイの第1レンズによって集束させられ、前記第3及び前記第4二次ビームが、前記マルチレンズアレイの第2レンズによって集束させられている、
請求項4に記載の方法。 - 前記第1、前記第2、前記第3及び前記第4二次ビームが、対物レンズによって集束させられている、
請求項4に記載の方法。 - 第1回折光学素子が、前記レーザビームを受け、前記複数の一次ビームを生成するように構成されている、
請求項1に記載の方法。 - 前記第1回折光学素子が回折ビームスプリッタである、
請求項9に記載の方法。 - 約0.3と約1の間の開口数をもつ光学素子が前記第1二次ビームを前記第1焦点領域に集束させる、
請求項1に記載の方法。 - 発生させた前記第1プラズマが、前記標的組織内の前記第1焦点領域において熱損傷をもたらすように構成されており、前記熱損傷がおおよそ第1深度からおおよそ第2深度へ延在する、
請求項2に記載の方法。 - 前記第1二次ビームが、前記準非回折焦点領域内の標的を含む体積内において選択的にプラズマを発生させるように構成されている、
請求項2に記載の方法。 - レーザビームを受け、複数の一次ビームを生成するように構成されている回折ビームスプリッタと、
前記回折ビームスプリッタのビーム下流に位置した回折素子で、前記複数の一次ビームの少なくとも第1一次ビームを受け、少なくとも第1二次ビーム及び第2二次ビームを生成するように構成されているものと、
前記回折素子のビーム下流に位置する集束素子で、前記第1二次ビームを標的組織内の第1焦点領域に集束させ、前記第2二次ビームを前記標的組織内の第2焦点領域に集束させるように構成されているものと、
を備えたシステムであって、
前記第1焦点領域が前記標的組織の表面から第1深度に位置し、前記第2焦点領域が前記標的組織の前記表面の前記第1深度とは異なる第2深度に位置しているシステム。 - 前記第1二次ビームと前記第2二次ビームとを、フレネルゾーンプレートのアレイにおける第1フレネルゾーンプレートによって生成する、
請求項14に記載の方法。 - 前記回折素子が、
前記複数の一次ビームの第2一次ビームを受け、少なくとも第3二次ビームと第4二次ビームとを生成するように、
前記第3二次ビームを前記標的組織内の第3焦点領域へ、前記第4二次ビームを第4焦点領域へ集束させるように、
構成されている、請求項15に記載の方法。 - 前記第3二次ビームが、前記第3焦点領域においてプラズマを発生させるように構成され、前記第4二次ビームが前記第4焦点領域においてプラズマを発生させるように構成されている、
請求項16に記載の方法。 - 前記第1及び前記第2二次ビームがマルチレンズアレイの第1レンズによって集束させられ、前記第3及び前記第4二次ビームが前記マルチレンズアレイの第2レンズによって集束させられている、
請求項16に記載の方法。 - 特性波長を含むレーザビームを受け、前記レーザビームを前記単一波長をもつ1つ以上のビームレットに分離するように構成された回折素子と、
前記回折素子のビーム下流に位置し第1開口数をもつ集束光学素子であって、前記1つ以上のビームレットの第1ビームレットを組織表面下の焦点体積に集束させるように構成された集束光学素子と、
を備えたシステムであって、
前記焦点体積が、前記組織内の第1深度から第2深度へ延在する長さをもち、前記第1ビームレットの強度が前記焦点体積内の所定の治療閾値を超える、システム。 - レーザ源からレーザビームを第1末端において受け、前記レーザビームを第2末端から加えるように構成された関節式アームと、
前記関節式アームの前記第2末端のビーム下流に位置する回折ビームスプリッタで、前記レーザビームを複数のビームに分割するように構成されたものと、
前記回折ビームスプリッタのビーム下流に位置する集束光学素子で、前記複数のビームを焦点アレイに集束させるように構成されたものと、
前記集束光学素子のビーム下流且つ前記焦点アレイのビーム上流に位置する窓で、標的組織に接触し前記複数のビームを透過させるように構成されたものと、
前記関節式アームの前記第2末端と前記回折ビームスプリッタと前記集束光学素子とを、前記窓と相対的に、前記複数のビームに伴う光学軸と概ね直角をなす第1方向に移動させるように構成された第1ステージと、
を備えたシステム。 - 関節式アームにより第1末端においてレーザビームを受けることと、
前記関節式アームの第2末端によって前記レーザビームを加えることと、
前記関節式アームの第2末端のビーム下流に位置する回折ビームスプリッタによって前記レーザビームを複数のビームに分割することと、
前記回折ビームスプリッタのビーム下流に位置する集束光学素子によって前記複数のビームを焦点アレイに集束させることと、
前記複数のビームを標的組織に接触するように構成された窓を通して透過させることと、
第1ステージによって、前記関節式アームの前記第2末端と前記回折ビームスプリッタと前記集束光学素子とを、前記窓と相対的に、前記複数のビームに伴う光学軸に対して概ね直角をなす第1方向へ移動させることと、
を備えた方法。 - レーザビームを生成することと、
前記レーザビームから第1二次ビームと第2二次ビームとを生成することと、
前記第1二次ビームを標的組織内の第1焦点領域へ、前記第2二次ビームを前記標的組織内の第2焦点領域へ集束させることと、
を備えた方法であって、
前記標的組織が前記組織の表面に近位な第1組織層と前記第1組織層下の第2組織層とを備え、前記第1焦点領域と前記第2焦点領域が前記第2組織層内に位置しており、
コントローラを使用して少なくとも1つのレーザビームのパラメータを制御し、前記第1組織層に有害な影響を与えることなく、前記第1焦点領域と前記第2焦点領域内に治療効果をもたらすことと、
を備えた方法。
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