JP5896427B2 - コードレスで手持ち式の超音波焼灼切断装置 - Google Patents
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Description
簡潔に、本発明の例示的な実施例によると、連続的な超音波切断と焼灼が可能なコードレスで手持ち式の装置が開示されている。本発明は、電源と、制御回路と、駆動回路と、整合回路とを具え、すべてが超音波切断装置のハンドピース内に配置されており、すべてがバッテリの電圧で波形を操作および生成する。好適には、発明は構成要素を異なる装置間で取り替えまたは移動させることができる。
開示された実施例は、発明の単なる実施例にすぎず、様々な形態で具体化されうることを理解されたい。このため、本書に記載される特定の構造と機能の詳細は、限定として説明されず、単にクレームの根拠、および実質的に任意の適切な構造で、当業者に本発明を様々に使用するよう教示する手本の根拠として説明される。さらに、本書に用いられる用語と熟語は限定を意味せず、むしろ本発明の分かり易い記述を提供するものである。
ここに記載されているのは、本発明の一実施例による例示的な装置である。図3を参照すると、ブロック回路図は発明300を示し、これは、マイクロプロセッサ302と、クロック330と、メモリ326と、電源304(例えば、バッテリ)と、スイッチ306(例えば、MOSFET電力スイッチ)と、駆動回路308(PLL)と、変圧器310と、信号平滑回路312(整合回路とも言い、例えば、タンク回路にもなりうる)と、検出回路314と、トランスデューサ316と、導波管とを具え、この導波管は、超音波切断ブレード318で終端し、本書では、単に導波管318として言及される。本発明はまた、導波管318をカバーおよび支持するカニューレ320を含む。本書に用いられるように「導波管動作生成アセンブリ」は、少なくともトランスデューサ316を含むサブアセンブリであるが、駆動回路308(PLL)、変圧器310、信号平滑回路312および/または検出回路314といった他の構成要素も含むことができる。
図7は、トランスデューサ316のようなモデルトランスデューサ700の概略回路図であり、圧電材料を含む。圧電トランスデューサは、従来技術においてよく知られている。圧電材料の質量と剛性は、トランスデューサ内で機械的共振構造を作成する。圧電効果のため、これらの機械的な特性は、電気的に同等な性質として明示される。言い換えると、電気端部で見られる電気共振周波数は、機械共振周波数と等しい。図7に示されているように、トランスデューサ316の力学的質量,剛性,および減衰は、誘導/コイルL、コンデンサC2、および抵抗Rの直列配置によって表され、すべては、別のコンデンサC1と並列である。電気的に等価なトランスデューサモデル700は、結晶用の既知のモデルと極めてよく似ている。
図8は、トランスデューサ700の動電流iMを得る方法を理解するのに有用な発明回路800の概略回路図である。この回路800は、トランスデューサ700の回路要素のすべてを有し、図7のトランスデューサ700と並列してさらに架橋する容量素子CBを加える。しかしながら、CBの値は、C1/CBが所定の比率rと等しくなるよう選択されている。効率のため、CB用に選択された値は比較的低くあるべきである。これは、iMから流用された電流を制限する。可変電源VTは、回路800の接触子802と804にわたり提供され、容量素子CBを通る電流iBと、トランスデューサ700へと流れる電流iTと、コンデンサC1を通り流れる電流iCと、最終的に動電流iMとを生成する。これはその後iM=iT−r×iBを追随する。これは:
したがって、iC=r×iBおよび、等式iM=iT−iCにおいてiCを代用し、iM=iT−r×iBを導く。
図9は、本発明の別の実施例を示し、ここではトランスデューサ316は、抵抗素子R,誘導素子L、および容量素子C4の並列配置として概略で表されている。さらなる容量素子C3は、入力802と抵抗素子R、誘導素子L、および容量素子C4の並列配置間の直列配置にある。この並列配置モデルは、操作の「反共振」モードにおいて、トランスデューサの作用を設計し、これは実質的にわずかに異なる周波数で起こる。トランスデューサ電圧VTは、トランスデューサ316の入力端子802、804間にかけられる。このランスデューサ電圧VTは、抵抗素子R、誘導素子L、および容量素子C4の並列配置にわたり、容量素子C3および動電圧VMをわたる電圧VC間に分割される。導波管318を動かす働きをするのは、動電圧VMである。したがって、この例示的な実施例において、十分に調整されるべきものは動電圧である。
図10は、本発明の例示的な実施例による発明の回路構成1000の例示的な実施例を示す。この回路構成1000は、図9のトランスデューサ900を含み、それに3つのさらなる容量素子C5、C6、およびC7を加える。容量素子C5は図9のトランスデューサ回路900と直列であり、容量素子C6とC7は互いに直列であり、容量素子C5とトランスデューサ回路900の直列する組合せと並列である。
図13乃至図30は、図3の図に示されている発明の装置全体を保持および/または含むのに好適な様々な「ガン」タイプの装置1300、1800、2300の実施例を示す。さらに具体的に、図14の断面図に示されているように、超音波手術装置1300は、防水シール可能なバッテリ保持区画1422と、このバッテリ保持区画1422と電気接触している駆動波生成回路1420と、ハンドルの外側からアクセス可能であり、トランスデューサ1302を(図13において点線で表された)超音波導波管1310に開放可能に物理的に連結するよう操作可能なトランスデューサ取付ドック1404とを有し、この導波管は、導波管取付ドック1406を通じてハンドル1408に連結され、この導波管取付ドックは、超音波導波管1310を受け、この導波管をトランスデューサ1302に物理的に連結するよう配置される。
図18と図19は、本発明の別の例示的な実施例を示しており、ここではガン形状の外側本体1800は、図13と図14の外側本体1300とは異なる形状を有する。この外側本体1800は、より大きな上部部分1802を有して形成されている。この場合において、発電機、バッテリ、およびトランスデューサは、(本書では「超音波動作生成装置」として言及される)アセンブリとして、あるいは別個の構成要素として、外側本体1800の上部部分1802内に、防水の、シール可能な、コードレスの、超音波動作生成アセンブリ保持構成要素1904に挿入可能である。この構成要素1904の内側は、滅菌シール1801の助けにより、手術中、滅菌フィールドの外部のままである。この挿入は、図19の示されているように、開閉可能なドア1806と1906の使用を通じて実行される。閉じられるとき、ドア1806と1906は、ガン1800の外部環境から、ガン1800の内部をシールする。
[トランスデューサ]
Claims (27)
- 超音波手術用アセンブリにおいて:
外部アセンブリ本体と;
前記アセンブリ本体内に配置されるコードレス超音波動作生成アセンブリと;
前記アセンブリ本体内に着脱自在に配置されるバッテリと;
ハンドル本体と;
前記超音波動作生成アセンブリに回転自在に連結される超音波導波管とを具えるハンドルとを具え、前記超音波動作生成アセンブリは前記導波管に沿って共振波をフィードバック制御により随時調整しながら生成可能であり、これにより自身に接続される時に前記導波管の超音波動作を生成するように動作可能であり;
前記コードレス超音波動作生成アセンブリがアセンブリドック内に着脱自在に配置されると、周囲に露出され、前記ハンドル本体を通して前記超音波動作生成アセンブリに前記導波管を連結するように形成される無菌閉塞可能なアセンブリドックと、を有するハンドルと;
前記ハンドル本体に可動に連結され、前記アセンブリドックを周囲に選択的に露出する区画ドアであって:
前記アセンブリドックに前記超音波動作生成アセンブリの出し入れがそれぞれ可能な開位置と;
前記アセンブリドックを周囲から無菌閉塞する閉位置と、を有する区画ドアと、を具え、
前記超音波動作生成アセンブリが、前記バッテリに電気的に接続され、かつ発生器アウトプットを有する駆動波生成回路と、前記発生器アウトプットに連結接続される超音波トランスデューサとを具え、
前記駆動波生成回路がさらに、波動形成プロセス中に前記バッテリの電圧でスイッチング可能なスイッチと、前記スイッチの出力を調整するよう構成された制御回路とを具えることを特徴とするアセンブリ。 - 請求項1に記載の超音波手術用アセンブリにおいて、前記駆動波生成回路が:駆動回路と;整合回路との少なくとも1を具えることを特徴とするアセンブリ。
- 請求項1に記載の超音波手術用アセンブリにおいて、前記アセンブリ本体が内部区画を有しており、さらに:
前記アセンブリ本体に可動に連結され、前記内部区画を周囲に選択的に露出するアセンブリドアを具えており、当該アセンブリドアが:
前記内部区画に前記超音波動作生成アセンブリおよび前記バッテリの少なくとも1の出し入れがそれぞれ可能な開位置と;
前記内部区画を周囲から閉塞する閉位置と、を有することを特徴とするアセンブリ。 - 請求項3に記載の超音波手術用アセンブリにおいて、前記閉位置が、前記内部区画を周囲から防水および無菌の少なくとも1で閉塞することを特徴とするアセンブリ。
- 請求項1に記載の超音波手術用アセンブリにおいて、前記トランスデューサが、前記アセンブリ本体の外側に延在することを特徴とするアセンブリ。
- 請求項1に記載の超音波手術用アセンブリにおいて、前記ハンドルがさらに、周囲に露出され、前記導波管を前記ハンドルに動作可能に連結する導波管取付ドックを具えることを特徴とするアセンブリ。
- 請求項6に記載の超音波手術用アセンブリにおいて、前記取付ドックが、前記導波管を前記アセンブリ本体に回転自在に接続することを特徴とするアセンブリ。
- 請求項6に記載の超音波手術用アセンブリにおいて:
前記取付ドックは前記導波管を前記アセンブリ本体に回転自在に接続しており;
前記トランスデューサは前記超音波動作生成アセンブリ内に回転可能に配置されており;
前記アセンブリドックは前記取り付けドック内の回転可能な前記導波管を前記超音波動作生成アセンブリの回転可能な前記トランスデューサに接続し、前記導波管および前記取付ドックの少なくとも一方が回転すると、対応して前記トランスデューサが前記アセンブリ本体に対して回転することを特徴とするアセンブリ。 - 請求項8に記載の超音波手術用アセンブリにおいて、前記トランスデューサが、前記駆動波生成回路に関して回転可能であることを特徴とするアセンブリ。
- 請求項1に記載の超音波手術用アセンブリにおいて、前記アセンブリ本体が再利用可能であることを特徴とするアセンブリ。
- 請求項1に記載の超音波手術用アセンブリにおいて、前記ハンドルがディスポーザブルであることを特徴とするアセンブリ。
- 請求項1に記載の超音波手術用アセンブリにおいて、前記超音波動作生成アセンブリは、前記バッテリによってのみ動力が供給されることを特徴とするアセンブリ。
- 請求項1に記載の超音波手術用アセンブリにおいて、前記超音波動作生成アセンブリが、識別された前記導波管の種類に基づいて駆動波周波数および駆動波電力の少なくとも一方を変更するように動作可能であることを特徴とするアセンブリ。
- 請求項1に記載の超音波手術用アセンブリにおいて、さらに、前記アセンブリドックに連結接続され、前記導波管、前記超音波動作生成アセンブリ、前記バッテリ、前記ハンドル、および前記ドアのうちの少なくとも1つについての情報の少なくとも一部を伝達するように動作可能なデバイス識別部を具えることを特徴とするアセンブリ。
- 請求項14に記載の超音波手術用アセンブリにおいて、前記情報の少なくとも一部が、前記ハンドルの識別、前記ハンドルの以前の使用、前記導波管の識別、前記導波管の以前の使用、バッテリの識別、前記バッテリの状態、前記バッテリの以前の使用、および前記ドアの状態、のうちの少なくとも1つであることを特徴とするアセンブリ。
- 請求項15に記載の超音波手術用アセンブリにおいて、前記超音波動作生成アセンブリは、識別された前記導波管の種類に基づいて、駆動波周波数および駆動波電力の少なくとも一方を変更するように動作可能であることを特徴とするアセンブリ。
- 請求項1に記載の超音波手術用アセンブリにおいて、前記超音波動作生成アセンブリは、情報を表示するように動作可能なディスプレイを有することを特徴とするアセンブリ。
- 請求項17に記載の超音波手術用アセンブリにおいて、前記ドアおよび前記ハンドル本体の少なくとも一方が、前記ハンドル本体の外側から前記ハンドル本体内に配置される前記ディスプレイを見るための透明部分を有することを特徴とするアセンブリ。
- 請求項1に記載の超音波手術用アセンブリにおいて、さらに、使用履歴を記録するためのメモリを具えることを特徴とするアセンブリ。
- 請求項1に記載の超音波手術用アセンブリにおいて、さらに、前記アセンブリドックに連結接続され、前記導波管、前記バッテリ、前記ハンドル、および前記ドアのうちの少なくとも1についての情報の少なくとも一部を伝達するように動作可能なデバイス識別部を具えることを特徴とするアセンブリ。
- 請求項20に記載の超音波手術用アセンブリにおいて、前記情報の少なくとも一部が、ハンドルの識別子、以前に使用したハンドルの情報リスト、導波管の識別子、以前に使用した導波管の情報リスト、バッテリの識別子、以前に使用したバッテリの情報リスト、およびバッテリ状態のうちの少なくとも1つであることを特徴とするアセンブリ。
- 請求項20に記載の超音波手術用アセンブリにおいて、前記デバイス識別部が、前記超音波動作生成アセンブリと通信するよう動作可能であることを特徴とするアセンブリ。
- 請求項1に記載の超音波手術用アセンブリにおいて、前記ハンドルがさらに、前記超音波動作生成アセンブリの少なくとも一部を前記アセンブリドックから排出するよう動作可能なアセンブリイジェクタを具えることを特徴とするアセンブリ。
- 請求項1に記載の超音波手術用アセンブリにおいて、前記超音波動作生成アセンブリがさらに;
電源の状態と;
ハンドルの使用回数と;
導波管の使用回数と;
バッテリの使用回数と;
バッテリ状態と;
導波管の識別子と;
バッテリの識別子と;
ハンドルの識別子と、の少なくとも1を示すように動作可能なディスプレイを具えることを特徴とするアセンブリ。 - 請求項1に記載の超音波手術用アセンブリにおいて、前記共振波はサイン波であることを特徴とするアセンブリ。
- 超音波手術用アセンブリにおいて:
内部区画を規定する外部アセンブリ本体と;
前記内部区画に着脱可能に配置され、前記内部区画で超音波動作を生成するよう動作可能な出力電対を有するコードレスの超音波動作生成アセンブリと;
前記内部区画に配置され、前記超音波動作生成アセンブリに電気的に接続されて動力を供給するバッテリと;
ハンドル本体であって:
ハンドグリップを規定する第1のハンドル本体部と;
前記第1のハンドル本体部に接続され、前記ハンドル本体に回転自在に接続される超音波導波管を具える第2のハンドル本体部であって:
前記超音波動作生成アセンブリは、自身に接続されるときに前記導波管に沿って共振波をフィードバック制御により随時調整しながら生成し、これによって前記導波管の超音波動作を生成するよう動作可能であり;
周囲に露出されたアセンブリドックであって、前記超音波動作生成アセンブリが配置された場合に、前記第2のハンドル本体部を通して前記出力電対に前記導波管を接続するよう形成された無菌閉塞可能なアセンブリドックと;を有する第2のハンドル本体部と、
前記第2のハンドル本体部に可動に接続され、前記アセンブリドックを周囲に選択的に露出する区画ドアであって:
前記アセンブリドックに前記超音波動作生成アセンブリの出し入れがそれぞれ可能な開位置と;
前記アセンブリドックを周囲から無菌閉塞する閉位置と;を有する区画ドアとを有するハンドル本体とを具え、
前記超音波動作生成アセンブリが、前記バッテリに電気的に接続され、かつ発生器アウトプットを有する駆動波生成回路と、前記発生器アウトプットに連結接続される超音波トランスデューサとを具え、
前記駆動波生成回路がさらに、波動形成プロセス中に前記バッテリの電圧でスイッチング可能なスイッチと、前記スイッチの出力を調整するよう構成された制御回路とを具えることを特徴とするアセンブリ。 - 請求項26に記載の超音波手術用アセンブリにおいて、前記共振波はサイン波であることを特徴とするアセンブリ。
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