JP7126496B2 - 外科適用例に調整されたレーザパルス - Google Patents
外科適用例に調整されたレーザパルス Download PDFInfo
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Description
Claims (13)
- レーザシステムであって、
レーザ用媒質と、
時間的に離間した複数の電気パルスを、前記レーザ用媒質を光ポンピングするデバイスに差し向けるように構成されたコントローラと、を有し、
前記レーザ用媒質は、光ポンピングに応答して、準連続レーザパルスを出力するように構成され、
前記時間的に離間した複数の電気パルスは、(a)第1の電気パルスと、(b)前記第1の電気パルスに続く複数の第2の電気パルスを含み、
前記第1の電気パルスは、前記レーザ用媒質のレーザ発光閾値よりも低いエネルギレベルまで前記レーザ用媒質を励起させるように構成され、
前記準連続レーザパルスは、前記複数の第2の電気パルスに応答して出力され、
前記準連続レーザパルスは、時間的に離間した複数のレーザパルスを含み、前記準連続レーザパルスの時間的に離間した複数のレーザパルスは、約1kHzよりも高い又はそれに等しい周波数を有する、レーザシステム。 - 前記レーザ用媒質は、Ho:YAG、Tm:YAG、Tm:Ho:YAG、Er:YAG、Er:YLF、Nd:YAG、Tm-ファイバレーザ、及びCTH:YAGのうちの1つを含む、請求項1に記載のレーザシステム。
- 前記複数の第2の電気パルスの各電気パルスは、約10~1000μsの電気パルス持続時間を有する、請求項1又は2に記載のレーザシステム。
- 前記複数の第2電気パルスのうちの隣接した電気パルスの間隔は、約10~300μsである、請求項1~3のいずれか1項に記載のレーザシステム。
- 前記準連続レーザパルスのレーザパルス持続時間は、約250μs~10msである、請求項1~4のいずれか1項に記載のレーザシステム。
- 前記準連続レーザパルスの電力は、約100W~1KWである、請求項1~5のいずれか1項に記載のレーザシステム。
- 前記準連続レーザパルスは、連続波形を有する、請求項1~6のいずれか1項に記載のレーザシステム。
- 前記第1の電気パルスは、前記レーザ発光閾値の約80%よりも高く且つ前記レーザ発光閾値よりも低いエネルギレベルまで、前記レーザ用媒質を励起させるように構成される、請求項1~7のいずれか1項に記載のレーザシステム。
- レーザ用媒質を有するレーザシステムを使用する方法であって、
時間的に離間した複数の電気パルスを、レーザ用媒質を光ポンピングするデバイスに差し向ける段階を含み、
前記時間的に離間した複数の電気パルスは、(a)第1の電気パルスと、(b)前記第1の電気パルスに続く複数の第2の電気パルスを含み、前記第1の電気パルスは、前記レーザ用媒質のレーザ発光閾値よりも低いエネルギレベルまで、前記レーザ用媒質を励起させるように構成され、
更に、前記時間的に離間した複数の第2電気パルスに応答して、前記レーザ用媒体から準連続レーザパルスを出力する段階を含み、
前記準連続レーザパルスは、(a)連続波形を有する単一のレーザパルス、及び、(b)約1kHzよりも高いか又はそれに等しい周波数を有する複数の時間的に離間したレーザパルスのうちの一方である、方法。 - 前記時間的に離間した複数の第2の電気パルスの各電気パルスは、約10~1000μsの電気パルス持続時間を有し、前記時間的に離間した複数の第2電気パルスのうちの隣接した電気パルスの間隔は、約10~300μsである、請求項9に記載の方法。
- 前記準連続レーザパルスのレーザパルス持続時間は、約250μs~10msであり、前記準連続レーザパルスの電力は、約100W~1KWである、請求項9又は10に記載の方法。
- 前記第1の電気パルスは、前記レーザ発光閾値の約80%よりも高く且つ前記レーザ発光閾値よりも低いエネルギレベルまで、前記レーザ用媒質を励起させるように構成される、請求項9~11のいずれか1項に記載の方法。
- 前記レーザ用媒質は、Ho:YAG、Tm:YAG、Tm:Ho:YAG、Er:YAG、Er:YLF、Nd:YAG、Tm-ファイバレーザ、及びCTH:YAGのうちの1つを含む、請求項9~12のいずれか1項に記載の方法。
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WO2020033121A1 (en) * | 2018-07-18 | 2020-02-13 | Ipg Photonics Corporation | Method and apparatus for laser lithotripsy |
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