JP7057277B2 - 脈管サイズを決定するシステム及びその方法 - Google Patents
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- A61B5/02—Detecting, measuring or recording for evaluating the cardiovascular system, e.g. pulse, heart rate, blood pressure or blood flow
- A61B5/02007—Evaluating blood vessel condition, e.g. elasticity, compliance
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- A—HUMAN NECESSITIES
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- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/72—Signal processing specially adapted for physiological signals or for diagnostic purposes
- A61B5/7203—Signal processing specially adapted for physiological signals or for diagnostic purposes for noise prevention, reduction or removal
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- A61B17/00—Surgical instruments, devices or methods
- A61B2017/00017—Electrical control of surgical instruments
- A61B2017/00022—Sensing or detecting at the treatment site
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- A—HUMAN NECESSITIES
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- A61B17/00—Surgical instruments, devices or methods
- A61B2017/00017—Electrical control of surgical instruments
- A61B2017/00115—Electrical control of surgical instruments with audible or visual output
- A61B2017/00119—Electrical control of surgical instruments with audible or visual output alarm; indicating an abnormal situation
- A61B2017/00123—Electrical control of surgical instruments with audible or visual output alarm; indicating an abnormal situation and automatic shutdown
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00571—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for achieving a particular surgical effect
- A61B2018/00595—Cauterization
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00636—Sensing and controlling the application of energy
- A61B2018/00642—Sensing and controlling the application of energy with feedback, i.e. closed loop control
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B2505/00—Evaluating, monitoring or diagnosing in the context of a particular type of medical care
- A61B2505/05—Surgical care
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Description
前記外科機器の前記作業末端に配置される少なくとも1つの発光素子(ここで、前記少なくとも1つの発光素子は第一強度で発光する);、及び、
前記少なくとも1つの発光素子に対向して前記外科機器の前記作業末端に配置される光センサアレイ(ここで、前記光センサアレイは、少なくとも1つの光センサの列を含み、前記光センサの列中の個別の光センサは、非パルス状の成分を含むシグナルを生成するように構成される)。また、システムは以下を含む:前記光センサアレイと結合したコントローラー(ここで、前記コントローラーは分析器を含み、前記分析器は、前記光センサの列中の個別の光センサにおける前記非パルス状の成分の大きさを決定し、前記非パルス状の成分の大きさが大きい方から小さい方へ変化しているかどうか、及び、小さい方から大きい方へ変化しているかどうかを決定し、及び前記非パルス状の成分の大きさが大きい方から小さい方へ変化している、且つ、小さい方から大きい方へ変化している場合には、前記第一強度を第二強度に変更すべきかどうかを決定する)。
前記外科機器の前記作業末端にて光を発すること(ここで、前記光は第一強度で発光される)、
少なくとも1つの光センサの列を含む光センサアレイにて前記外科機器の前記作業末端の光を感知すること、及び
光センサの列に沿った個別のセンサに関して、非パルス状の成分を含むシグナルを発生させること。
前記方法は更に以下を含む:
前記光センサの列中の個別の光センサにおける前記非パルス状の成分の大きさを決定すること、
前記非パルス状の成分の大きさが大きい方から小さい方へ変化しているかどうか、及び、小さい方から大きい方へ変化しているかどうかを決定すること、並びに、
前記非パルス状の成分の大きさが大きい方から小さい方へ変化している、及び、小さい方から大きい方へ変化している場合には、前記第一強度を第二強度に変更すべきかどうかを決定すること。
前記外科機器の前記作業末端に配置される少なくとも1つの発光素子;、及び
前記少なくとも1つの発光素子に対向して前記外科機器の前記作業末端に配置される光センサアレイ(ここで、前記光センサアレイは、少なくとも1つの光センサの列を含み、前記光センサの列中の個別の光センサは、非パルス状の成分を含むシグナルを生成するように構成される)。また、システムは以下を含む:前記光センサアレイと結合したコントローラー(ここで、前記コントローラーは分析器を含み、前記分析器は、前記光センサの列中の個別の光センサにおける前記非パルス状の成分の大きさを決定し、前記非パルス状の成分における大きさに関して大きい方から小さい方への第一の変化と、及び、前記非パルス状の成分における大きさに関して小さい方から大きい方への第二の変化とに対応する1対の位置を決定し、並びに、前記1対の位置に従って、対称的な非パルス状のプロファイルに基づいて、前記脈管の安静状態の外径を決定する)。
1-(min1≦j≦NDCj/max1≦j≦NDCj) (Eqn.)
ここで、N=センサのトータル数。
対象となる領域は、その後、一次導関数を用いて決定できる。
Claims (4)
- 外科機器の作業末端の近領域内の脈管のサイズを決定するために用いられる外科用システムであって、以下を含み:
前記外科機器の前記作業末端に配置される少なくとも1つの発光素子であって、前記少なくとも1つの発光素子は第一強度で発光する、該発光素子;
前記少なくとも1つの発光素子に対向して前記外科機器の前記作業末端に配置される光センサアレイであって、前記光センサアレイは少なくとも1つの光センサの列を備え、前記光センサの列中の個別の光センサは、非パルス状の成分を含むシグナルを生成するように構成される、該光センサアレイ;並びに
前記光センサアレイと結合したコントローラーであって、前記コントローラーは、分析器を備え、前記分析器は、
前記非パルス状成分の大きさを、前記光センサの列中の個別の光センサにて決定し、
前記非パルス状の成分の大きさが、前記光センサアレイに沿って大きい方から小さい方へ変化しているかどうか、及び、前記光センサアレイに沿って小さい方から大きい方へ変化しているかどうかを決定し、並びに
前記非パルス状の成分の大きさが、前記光センサアレイに沿って大きい方から小さい方へ変化している、且つ、前記光センサアレイに沿って小さい方から大きい方へ変化している場合には、前記第一強度を第二強度に変更すべきかどうかを決定する、該コントローラー;
さらに、前記コントローラーは、前記第一強度を第二強度に変更すべき旨の決定を、以下を用いて決定される角度に従って行い:
第一ラインであって、導関数がゼロからゼロ以外の値に変化する前記非パルス状のプロファイルに沿ったポイントから、最も低い非パルス状の値に対応するポイントまでひかれた第一ラインと所定の基準線、又は
第二ラインであって、導関数がゼロ以外の値からゼロに変化する前記非パルス状のプロファイルに沿ったポイントから、最も低い非パルス状の値に対応するポイントまでひかれた第二ラインと所定の基準線;
前記分析器は、
前記非パルス状の成分における大きさに関して前記光センサアレイに沿って大きい方から小さい方への第一の変化と、及び、前記非パルス状の成分における大きさに関して前記光センサアレイに沿って小さい方から大きい方への第二の変化とに対応する1対の位置を決定し、並びに
前記脈管の安静状態の外径を、前記1対の位置に基づいて決定する、システム。 - 請求項1に記載の外科用システムであって、前記コントローラーが前記角度が第一の値から第二の値の範囲内にあるかどうかを決定し、ここで、前記第二の値は前記第一の値よりも大きい、該システム。
- 請求項2に記載の外科用システムであって、前記角度が前記第一の値未満である場合、前記第一強度を前記第二強度にまで低下させる、該システム。
- 請求項2に記載の外科用システムであって、前記角度が前記第二の値よりも大きい場合、前記第一強度を前記第二強度にまで上昇させる、該システム。
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