JP2010000336A - 超音波手術装置 - Google Patents
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- A61B17/320068—Surgical cutting instruments using mechanical vibrations, e.g. ultrasonic
- A61B2017/320072—Working tips with special features, e.g. extending parts
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Abstract
【解決手段】超音波手術装置は、超音波振動を発生する超音波振動子を有する超音波振動子ユニットと、前記超音波振動子と基端側にて接続し、前記超音波振動子にて発生した超音波振動を基端側から先端側に伝達する伝達部材と、前記伝達部材が挿通され、先端側の側方部に開口部を有するシースと、前記伝達部材の先端に配設され、前記開口部から露出した際に、前記伝達部材から伝達される超音波振動によって処置対象部位を処置する処置部と、を具備する。超音波手術装置は、硬組織を切除または切削する。
【選択図】 図1
Description
図1から図7を参照し、第1の実施形態について説明する。
図1に示すように整形外科用の超音波手術装置1は、例えば整形外科手術における処置対象部位を処置するハンドピース10と、超音波振動駆動装置50と、フットスイッチ70とを有している。処置対象部位とは、例えば骨や軟骨などの硬組織等である。処置とは、例えば切除や切削などである。
x=V/π/fr
例えば100%の出力条件において、振動速度Vは略7.4m/s〜略22.1m/sの範囲にすることが好ましい。
本変形例の処置部31の形状は、第1の実施形態の処置部31とは異なる。本変形例の処置部31は、先端の尖った略平板形状を有している。また第1のエッジ31aと第2のエッジ31bは、それぞれエッジに沿って、半円形状の複数の窪み部31cを略等間隔に有している。窪み部31cの半径は略0.2mm〜略0.6mmであり、隣り合う窪み部31c間のピッチは略0.5mm〜略2mmである。
本変形例の処置部31の形状は、第1の実施形態の処置部31とは同様である。しかしながら本変形例の処置部31には、エッジに沿って、例えばPVDやCVDによる窒化チタンからなる硬質のコーティング層33が形成されている。コーティング層33は、エッジから所望の距離、例えばエッジから処置部31の内側に向かって1mmの範囲に形成されている。
本変形例は、コーティング層33が形成されているため、磨耗、損傷に対する処置部31の耐久性が向上する。また本変形例は、処置部31の磨耗、損傷の程度を、コーティング層33の状態(例えばコーティング層33が処置部31から剥がれたか否か)により、視覚的に確認することが容易である。
本変形例における壁部22の先端外周部には、コールドナイフ23ではなく、ナイフ電極35が一体的に設けられている。ナイフ電極35は、ステンレス等の通電可能な金属材料からなる。ナイフ電極35の後端側には、高周波出力用接続ケーブル36の一端が接続されている。ナイフ電極35の後端側と高周波出力用接続ケーブル36の一端との接続部は、絶縁部材37により覆われている。また、高周波出力用接続ケーブル36の他端は、図示しない高周波駆動装置に接続されている。よって、ナイフ電極35は、高周波出力用のモノポーラ電極として機能する。つまりナイフ電極35は、電気メスとして機能する。
本実施形態においてシース20には、コールドナイフ23やナイフ電極35が設けられていない。また本実施形態における処置部31は、四角錘形状の複数の突起40aが形成されている第1の処置面41aと、突起40aよりも小さい四角錘形状の複数の突起40bが形成されている第2の処置面41bとを有している。第1の処置面41aは、長手軸方向5を中心に第2の処置面41bと略対称に配設されている。
本変形例の処置部31の形状は、第2の実施形態の処置部31とは異なる。本変形例の処置部31は、第1の実施形態における図4と図5とに示す略平板形状と、第1の実施形態の第1の変形例における図8A乃至図8Cに示す先端の尖った略平板形状と、の組み合わせである。
また本実施形態における処置部31は、四角錘形状の複数の突起45aが形成されている第1の処置面46aのみを有している。
本変形例の処置部31の形状は、第2の実施形態の処置部31とは異なる。図18A乃至図18Cに示すように、処置部31は、略平板形状を有し、また先端部48aに向かって湾曲した形状を有している。先端部48aには、超音波振動によって処置対象部位を処置する処置面48bが形成されている。
図22に示すように本変形例の本体20aには、係合部26bと係合可能な凹部81a,81b,81cが設けられている。凹部81a,81b,81cは、長手軸方向5の周方向において略等間隔に配設されている。つまり凹部81a,81b,81cは、長手軸方向5の周方向において略120度離れている。
係合部26bが凹部81aに係合すると、図23に示すように第1の処置面82aは開口部25から露出し、第2の処置面82bと第3の処置面82cが先端部材20bに収納されることとなる。
また係合部26bが凹部81bに係合すると、図24に示すように第2の処置面82bは開口部25から露出し、第1の処置面82aと第3の処置面82cが先端部材20bに収納されることとなる。
また係合部26bが凹部81cに係合すると、図25に示すように第3の処置面82cは開口部25から露出し、第1の処置面82aと第2の処置面82bが先端部材20bに収納されることとなる。
処置部31は、第1の処置面82aと第2の処置面82bと第3の処置面82cとのいずれかが処置対象部位に接触することで、超音波振動によって処置対象部位を処置することとなる。
また一般に、超音波振動の振幅は、プローブ30の先端から基端に向かって減少する。ここで、突起83cは、長手軸方向5において、プローブ30の先端側から基端側に向けて突起83cの大きさ(突起83c間のピッチ)が小さくなるように形成されている。つまり突起83cの大きさは、超音波振動の振幅の大きさに略比例するように形成されている。
なお、突起83cの大きさは、超音波振動の振幅の大きさに略比例するように形成されている。よって、先端側の突起83cにおける処置は荒削りとなり、基端側の突起83cにおける処置は仕上げ削りとなる。
Claims (9)
- 超音波振動を発生する超音波振動子を有する超音波振動子ユニットと、
前記超音波振動子と基端側にて接続し、前記超音波振動子にて発生した超音波振動を基端側から先端側に伝達する伝達部材と、
前記伝達部材が挿通され、先端側の側方部に開口部を有するシースと、
前記伝達部材の先端に配設され、前記開口部から露出した際に、前記伝達部材から伝達される超音波振動によって処置対象部位を処置する処置部と、
を具備し、硬組織を切除または切削することを特徴とする超音波手術装置。 - 前記シースは、切除または切削によって前記処置対象部位を処置する処置具をさらに有することを特徴とする請求項1に記載の超音波手術装置。
- 前記処置具は、コールドナイフを含むことを特徴とする請求項2に記載の超音波手術装置。
- 前記処置具は、電気メスを含むことを特徴とする請求項2に記載の超音波手術装置。
- 前記シースは、前記伝達部材に対して、前記伝達部材が挿通する方向の周方向に回動可能であることを特徴とする請求項1に記載の超音波手術装置。
- 前記シースの回動位置を選択的に位置決めする位置決め機構をさらに有することを特徴とする請求項5に記載の超音波手術装置。
- 前記処置部は、前記伝達部材が挿通する方向の周方向において、複数の処置面を有することを特徴とする請求項5に記載の超音波手術装置。
- 前記処置部は、前記伝達部材が挿通する方向の周方向において、それぞれ異なる形状の複数の処置面を有することを特徴とする請求項5に記載の超音波手術装置。
- 前記処置部は、前記シースが前記伝達部材に対して、前記伝達部材が挿通する方向の周方向に回動することで、前記伝達部材から伝達される超音波振動によって前記処置対象部位を処置するために前記開口部から露出する露出状態、または前記処置対象部位を処置せずに待機するために前記シースに収納される収納状態に変動することを特徴とする請求項5に記載の超音波手術装置。
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| US7389608P | 2008-06-19 | 2008-06-19 | |
| US61/073,896 | 2008-06-19 |
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| JP2009018561A Expired - Fee Related JP5430161B2 (ja) | 2008-06-19 | 2009-01-29 | 超音波手術装置 |
| JP2013215875A Expired - Fee Related JP5703360B2 (ja) | 2008-06-19 | 2013-10-16 | 超音波手術装置 |
| JP2015033140A Expired - Fee Related JP5930247B2 (ja) | 2008-06-19 | 2015-02-23 | 超音波手術装置 |
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| JP2015033140A Expired - Fee Related JP5930247B2 (ja) | 2008-06-19 | 2015-02-23 | 超音波手術装置 |
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Cited By (87)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013027614A1 (ja) | 2011-08-19 | 2013-02-28 | オリンパスメディカルシステムズ株式会社 | 超音波発生装置の製造方法、超音波処置装置の製造方法、超音波発生装置及び超音波処置装置 |
| JP2013519441A (ja) * | 2010-02-11 | 2013-05-30 | エシコン・エンド−サージェリィ・インコーポレイテッド | 超音波手術器具のための外側シース及びブレード配設 |
| JP2013519437A (ja) * | 2010-02-11 | 2013-05-30 | エシコン・エンド−サージェリィ・インコーポレイテッド | 回転可能なブレード及び中空のシース構成を有する超音波外科用器具 |
| WO2015046347A1 (ja) | 2013-09-27 | 2015-04-02 | オリンパスメディカルシステムズ株式会社 | 超音波プローブ、超音波処置具及び処置システム |
| WO2015045199A1 (ja) * | 2013-09-27 | 2015-04-02 | オリンパスメディカルシステムズ株式会社 | 超音波プローブ、超音波処置具及び処置システム |
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Also Published As
| Publication number | Publication date |
|---|---|
| EP2135569A3 (en) | 2010-01-06 |
| JP5703360B2 (ja) | 2015-04-15 |
| JP5930247B2 (ja) | 2016-06-08 |
| JP2014054545A (ja) | 2014-03-27 |
| US8273087B2 (en) | 2012-09-25 |
| US20090318944A1 (en) | 2009-12-24 |
| JP2015128628A (ja) | 2015-07-16 |
| JP5430161B2 (ja) | 2014-02-26 |
| EP2135569A2 (en) | 2009-12-23 |
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