JP6835361B2 - 電気手術器具 - Google Patents
電気手術器具 Download PDFInfo
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- JP6835361B2 JP6835361B2 JP2018518605A JP2018518605A JP6835361B2 JP 6835361 B2 JP6835361 B2 JP 6835361B2 JP 2018518605 A JP2018518605 A JP 2018518605A JP 2018518605 A JP2018518605 A JP 2018518605A JP 6835361 B2 JP6835361 B2 JP 6835361B2
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- distal portion
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Description
同軸供給ケーブルに対する遠位部分の回転は、同軸供給ケーブルを回転させず、またはねじらせないで、すなわち同軸供給ケーブルが静止したまま、遠位部分が回転し得ることを意味する。
2つの部分の間の電気的接続は、電気的信号が部分の1つから他の部分へと通信され得ることを意味する。それは2つの部分が直接的に接続されることを意味して良い。あるいは、2つの部分が間接的に接続され、これにより電気的信号が第3の部分を介して2つの部分の間で通信されることを意味して良い。
可撓性伝達線は可撓性マイクロストリップ伝達線、または可撓性ストリップ線伝達線であって良い。
可撓性伝達線は弾性的に回復力があって良い。このように、可撓性伝達線が遠位部分の回転によって変形されるとき、可撓性伝達線は、伝達線が変形されない最初の回転配向へと遠位部分を戻すように機能する付勢力を提供する。可撓性伝達線は、したがって遠位部分が最初の回転配向から回転されるときに遠位部分を最初の回転配向へと戻すための伸縮ばねとして機能する。なお、上述のように分離されたばねは、回転付勢を提供するために提供されて良い。
可撓性伝達線は、その第1の表面における第1の導電性経路とその対向する第2の表面における第2の導電性経路とを有する可撓性マイクロ波基板を備えて良く、第1の導電性経路は内部導電体を第1の導電性要素に電気的に接続して良く、第2の導電性経路は外部導電体を第2の導電性要素に電気的に接続して良い。このように、同軸供給ケーブルに対する遠位部分の回転の間、電気的接続は可撓性伝達線に亘り適切に維持される。
経路は、遠位部分の中心軸周りの螺旋状経路または渦巻状経路であって良い。言い換えれば、経路は、少なくとも遠位部分の周表面の部分で曲がって良く、少なくとも遠位部分の軸方向長さの部分に沿って延びて良い。
経路は、駆動要素が軸方向に動かされるときに駆動要素の一部と摺動接触する遠位部分のカム表面であって良く、それにより遠位部分を回転させる。遠位部分の周表面の部分は、カム表面を提供するために取り除かれて良く、または省かれても良い。たとえば、カム通路はカム表面を提供するために遠位部分の表面から取り除かれて良く、または省かれても良い。したがって、駆動要素が遠位部分に向かって軸方向に動かされるとき、遠位部分はカム表面と摺動接触する駆動要素の部分によって回転させられる。
駆動要素は流体を生物組織に運ぶ/吐出する針を備えて良い。いくつかの知られた電気手術器具は流体を生物組織に運ぶ/吐出するためのそのような針を使用し、したがって別の駆動要素を提供するよりもむしろ駆動要素としてこの針を利用すると有利となり得る。針はしたがって二重の目的であって良い。このように、器具に沿って針を器具先端へと軸方向に動かすことによって、針は、器具先端の配向を変化及び制御するために使用され得る。遠位部分が付勢される場合、器具先端の配向は、器具先端の時計回りまたは反時計回り回転を実現するために針を軸方向(前方または後方)のいずれかに動かすことによって正確に制御され得る。一度針が経路の軸方向端部を通過するポイントへと軸方向に動かされると、針は、器具先端の回転配向に影響することなく組織内へと流体を吐出するために軸方向に動かされ得る。
図1Aから図1Dは本発明に係る実施形態において使用される回転可能な接続の製造方法を示す。
同軸伝達線の特性インピーダンスZ0は、概して等式(1)により与えられる。
同軸供給ケーブル39(または少なくともいくつかの同軸供給ケーブル39)は、管状ハウジング41内に受容される。たとえば管状ハウジング41は、可撓性プラスチックまたはポリマー管であって良い。同軸供給ケーブル39は管状ハウジング41に沿って送られて良い。同軸供給ケーブル39は管状ハウジング41に対して回転可能である。言い換えれば、同軸供給ケーブル39は管状ハウジング41に対して固定されない。図5において、管状ハウジング41は不透明なものとして示され、実際に不透明になる見込みである。
図3Aにおいて、器具35の操作者によって管状ハウジング41に沿って管状ハウジング41を送り下げられ軸方向に動かされ得るロッド49の形式の駆動要素49を用いて器具先端37が回転される。以下に説明されるように、いくつかの実施形態において、ロッド49は生理食塩水のような流体を器具先端と隣接した組織内へと吐出するための器具の針であって良い。
針73は、管状ハウジング69に固定される案内リング79内のスロット77に沿って通過する針案内管75内に摺動可能に受容される。案内リング79のスロット77は、管状ハウジング69に対して軸方向にのみ動くことができ、側方には動かせないように、針73の動作を制限する。
Claims (11)
- 高周波エネルギー及び/またはマイクロ波周波数エネルギーを生物組織に付与するための電気手術器具であって、前記器具が、
高周波エネルギー及び/またはマイクロ波周波数エネルギーを生物組織に付与するための器具先端を備えた遠位部分であって、前記器具先端が第1の導電性要素と第2の導電性要素とを備えた、前記遠位部分と、
内部導電体と前記内部導電体と同軸上の管状外部導電体と前記内部及び外部導電体を分離する誘電材料とを備えた同軸供給ケーブルであって、高周波エネルギー及び/またはマイクロ波周波数エネルギーを前記遠位部分に伝送するための前記同軸供給ケーブルと、を備え、前記内部導電体が前記第1の導電性要素に電気的に接続され、
前記外部導電体が、前記遠位部分の中心軸周りの、前記同軸供給ケーブルに対する前記遠位部分の回転を可能とする前記遠位部分と前記同軸供給ケーブルとの間の回転可能な接続を通して前記第2の導電性要素に電気的に接続され、
前記器具が、前記遠位部分を前記同軸供給ケーブルに対して第1の回転方向に回転させるための駆動器を備え、
前記器具は、前記同軸供給ケーブルが受容される管状ハウジングを備え、
前記遠位部分が前記管状ハウジングの遠位端で回転可能に取り付けられ、
前記器具は、前記遠位部分が前記第1の回転方向に回転されるときに、対向する第2の回転方向に前記遠位部分を回転付勢するように構成された付勢要素を備え、
前記付勢要素が前記遠位部分及び前記管状ハウジングに接続された、電気手術器具。 - 前記付勢要素がばねまたは弾性スリーブを備える、請求項1に記載の電気手術器具。
- 前記器具は、前記遠位部分が停止要素に接触するときに前記遠位部分の前記第2の回転方向への回転を防ぐように構成された前記停止要素をさらに備えた、請求項1または2に記載の電気手術器具。
- 前記停止要素が前記管状ハウジングに接続された、請求項3に記載の電気手術器具。
- 前記遠位部分が第2の中実内部導電体と、前記第2の内部導電体と同軸上の第2の管状外部導電体と、前記第2の内部及び外部導電体を分離する第2の誘電材料と、を備える第2の同軸供給ケーブルを備え、前記第2の同軸供給ケーブルが、高周波エネルギー及び/またはマイクロ波周波数エネルギーを前記器具先端に伝送するためのものである、請求項1から4のいずれか1項に記載の電気手術器具。
- 前記回転可能な接続が可撓性伝達線を備えた、請求項1から5のいずれか1項に記載の電気手術器具。
- 前記器具が前記同軸供給ケーブルに対して前記遠位部分を回転させるための駆動要素を備え、
前記駆動要素が前記器具に沿って軸方向に動かされるように構成され、
前記遠位部分が前記駆動要素の軸方向運動を前記遠位部分の回転運動へと変換するための接合部を備えた、請求項1から6のいずれか1項に記載の電気手術器具。 - 前記器具先端が、その第1の表面における前記第1の導電性要素をその第2の表面における前記第2の導電性要素から分離する誘電材料で形成された平面状本体を備え、前記第2の表面が前記第1の表面に対して前記対向する方向に面する、請求項1から7のいずれか1項に記載の電気手術器具。
- 前記遠位部分が、前記平面状本体の下側を覆うために取り付けられた保護外殻をさらに備え、
前記保護外殻が、前記平面状本体から外方に面する滑らかに外形化された凸状下部表面を有し、
前記平面状本体がテーパ状遠位縁を有し、
前記平面状本体の前記下側が前記テーパ状遠位縁において前記保護外殻を超えて延びる、請求項8に記載の電気手術器具。 - 前記器具先端の長さが実質的にλ/2に等しく、ここにおいて、λは、前記器具先端において所定の周波数を有するマイクロ波周波数エネルギーの波長である、請求項1から9のいずれか1項に記載の電気手術器具。
- 前記器具先端の特性インピーダンスが前記同軸供給ケーブルの特性インピーダンスと実質的に等しく、
前記遠位部分が、前記同軸供給ケーブルの前記特性インピーダンスをマイクロ波周波数エネルギーの所定の周波数で前記器具先端と接触した組織負荷の前記インピーダンスに整合するためのインピーダンス整合区分を備え、前記インピーダンス整合区分が、
前記器具先端の近位端に接続された同軸伝達線の長さと、
短絡スタブと、を備えた、請求項1から10のいずれか1項に記載の電気手術器具。
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Publication number | Priority date | Publication date | Assignee | Title |
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JP2021058605A (ja) * | 2015-10-19 | 2021-04-15 | クレオ・メディカル・リミテッドCreo Medical Limited | 電気手術器具 |
JP7214239B2 (ja) | 2015-10-19 | 2023-01-30 | クレオ・メディカル・リミテッド | 電気手術器具 |
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