JP6250127B2 - 前立腺治療システム及び方法 - Google Patents
前立腺治療システム及び方法 Download PDFInfo
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Classifications
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Description
図4では、プローブ100が、尿道に挿入するための細長い導入器部分110及び人間が手で掴むためのハンドル部分111を有することがわかる。導入器部分110の重要な構造的構成要素は、長さ方向軸線113に沿って延びる剛性導入器スリーブ即ち延長スリーブ112を含む。延長スリーブ112は、近位端114a及び遠位端114bを含む。剛性延長スリーブのボア115は、長さ方向軸線113に沿って延びる。一実施例では、図4及び図5を参照すると、延長スリーブ112は、商業的に入手可能な視認スコープ又は内視鏡を受け入れる寸法のボア115を持つステンレス鋼製の薄壁チューブで形成されている。図5の概略側面図は、延長スリーブ112の中間部分122に連結された構造的バルクヘッド120を示す。構造即ちバルクヘッド120は、ピストルグリップ124を持つ成形ハンドル、更に詳細には、互いに噛み合う左右のハンドル部品125a及び125bが連結された(図4参照)構造部材を含む。バルクヘッドは、スリーブ112に固定できる、又はスリーブ112に回転自在に連結できるプラスチック製成形品であってもよい。
図10及び図11は、休止状態の形状を示すため、プローブ100から外した可撓性マイクロカテーテル部材即ちニードル105を示す。一実施例では、マイクロカテーテル105は、比較的大径の第1(近位)断面部分170を有し、この第1断面部分170は、縮径して第2(遠位)断面部分175に続く。比較的小径の断面部分175は、休止状態の形状が湾曲しており、この湾曲は、マイクロカテーテル105をその非延長位置から図1、図8、及び図9に示すその延長位置まで移動するときにマイクロカテーテル105の作用端108が辿る経路の湾曲軸線177の輪郭と大きな抵抗なく形態が一致するように形成されている。一実施例では、図10、図11、及び図12を参照すると、マイクロカテーテルの第1断面部分170は、マイクロカテーテル部材105の長さに亘って延びるマイクロカテーテル内チューブ185の外側に同心に配置された薄壁外スリーブ180を含む。図12でわかるように、外スリーブ180は、チューブ状内部材185の周囲に断熱空隙188を形成する。図12に示す一実施例では、外スリーブ180には、外スリーブ180の内面192とマイクロカテーテル内チューブの外面193との間に空隙188を維持する断続的突出部190が形成されている。図10は、外スリーブ180に縮径部分194が設けられており、この部分が超音波溶接、接着剤、等の任意の適当な手段によってマイクロカテーテル内チューブ185に結合されているということを示す。図10を再び参照すると、外スリーブ180及びチューブ状内部材185は、両方とも、高温蒸気を以下に説明するように送出するのに適したウルテム(ウルテム(Ultem)は登録商標である)等の耐熱性ポリマーで形成されている。一実施例では、マイクロカテーテルチューブ185の外径は1.27mm(0.050インチ)であり、内部内腔195の直径が約0.762mm(約0.030インチ)である。図8及び図9を参照すると、蒸気媒体を組織に送出するための作用端部分108の一実施例は、複数の出口ポート200が設けられた薄い壁198を有する。これらの出口ポート200は、蒸気媒体を以下に説明するように組織内に放出するように形成されている。出口ポートの数は約2個乃至100個であり、一実施例では、図10に示すように、直径が0.203mm(0.008インチ)の12個の出口が、作用端108の周囲に各々2個の出口を含む6つの列をなして互いに食い違って設けられている。図10及び図11に示す一実施例では、マイクロカテーテルチューブ185の最遠位チップ202は、先が尖った円錐形形態を有し、これはプラスチック材料製のチューブ185によって形成できる。以下に説明するように、ポリマー製のニードル及びニードルチップ202が有用であることがわかっている。これは、その熱容量が、蒸気送出中の蒸気の品質に影響を及ぼさないというその熱的特性のためである。
図16A及び図16Bを参照すると、本発明のデバイス及び方法は、第1及び第2の前立腺葉(又は右葉及び左葉)の組織に熱アブレーションを制御下で正確に加え、中葉が拡大した患者の中葉にも作用を及ぼす。詳細には、アブレーション治療は、間質筋組織又は平滑筋組織、アルファアドレナリン(筋収縮)受容体、及び交感神経構造にアブレーションを加える。更に詳細には、アブレーション治療方法のターゲットは、図16A及び図16Bに示すように、尿道前立腺部と平行な、膀胱頸部領域420と精丘領域422との間の平滑筋組織、アルファアドレナリン受容体、及び交感神経構造である。ターゲットアブレーション領域425の深さを図16A及び図16BにDで示す。これは、尿道前立腺部120から2cm未満であり、又は1.5cm未満である。患者の尿道前立腺部120の長さに応じて、アブレーションエネルギの送出箇所の数は、2乃至4であり、代表的には、2又は3である。
105 マイクロカテーテル部材
108 遠位チップ部分
110 導入器部分
111 ハンドル部分
112 延長スリーブ
113 長さ方向軸線
114a 近位端
114b 遠位端
115 ボア
118 内視鏡
120 バルクヘッド
122 中間部分
124 ピストルグリップ
125 ハンドル部品
130 近位開放端
132 アダプタ機構
135 近位視認端
140 光源
136 光コネクタ
Claims (15)
- 蒸気治療システムにおいて、
男性の尿道に挿入されるようになったシャフトと、
蒸気出口ポートを持つ、前記シャフト内の蒸気送出ニードルと、
前記ニードルのチップを前記シャフトに対して概して横方向に移動させるようになった蒸気ニードル展開機構と、
灌注液体源、及び、前記灌注液体源から灌注液体出口までシャフト内を延びる灌注通路と、
前記灌注液体源から前記灌注液体出口を通して冷却流体を灌注するように構成された灌注アクチュエータと、
蒸気源と、
蒸気を前記蒸気源から前記蒸気送出ニードル内に送出し、前記蒸気出口ポートから出すようになった蒸気送出アクチュエータと、
冷却流体の灌注なしに蒸気の送出が行われないように構成された相互係止体と、を含む、システム。 - 請求項1に記載のシステムにおいて、
前記蒸気送出ニードルは、遠位ニードルチップがシャフト内にある引っ込め位置と遠位ニードルチップがシャフトから延びる展開位置との間で移動自在である、システム。 - 請求項2に記載のシステムにおいて、
前記蒸気送出ニードルをシャフト内に引っ込めるようになったニードル引っ込めアクチュエータを更に含む、システム。 - 請求項1に記載のシステムにおいて、
前記蒸気送出ニードルは、蒸気出口ポートを備えていない非エネルギアプリケータ部分を含む、システム。 - 請求項4に記載のシステムにおいて、
前記非エネルギアプリケータ部分は、ほぼ男性の尿道の太さである、システム。 - 請求項1に記載のシステムにおいて、
前記蒸気送出ニードルは、先が尖ったチップを持つ可撓性ポリマーチューブである、システム。 - 請求項1に記載のシステムにおいて、
前記灌注アクチュエータは、前記蒸気送出アクチュエータが蒸気を送出するときに、冷却流体を灌注するように構成されている、システム。 - 請求項1に記載のシステムにおいて、
ハンドルを更に含み、前記ハンドルは、シャフトを該ハンドルに関して回転できるように調節自在に回転自在のコネクタにより該シャフトに連結されている、システム。 - 請求項8に記載のシステムにおいて、
前記回転自在のコネクタは、所定の角度の回転ストップを含む、システム。 - 請求項1に記載のシステムにおいて、
制御装置に作動的に接続された温度センサを更に含み、蒸気の送出を感知された温度に基づいて制御する、システム。 - 請求項10に記載のシステムにおいて、
前記温度センサは、ニードルの温度を感知するように構成されている、システム。 - 請求項10に記載のシステムにおいて、
前記温度センサは、シャフトの温度を感知するように構成されている、システム。 - 請求項1に記載のシステムにおいて、
前記ニードルが展開されない限り、蒸気が前記蒸気送出ニードルから送出されないようにする蒸気送出相互係止体を更に含む、システム。 - 請求項1に記載のシステムにおいて、
前記ニードル展開機構は、前記ニードルの展開距離を制限するようになった制限ストップを含む、システム。 - 請求項1に記載のシステムにおいて、更に、
内視鏡を受け入れる大きさの内視鏡ボアが前記シャフトに設けられており、前記内視鏡ボアは、使用者が前記内視鏡を通して前記蒸気送出ニードルの遠位端を見ることができるように配向されている開口部を有する、システム。
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WO2011119957A2 (en) | 2011-09-29 |
CN105832403B (zh) | 2019-06-18 |
US20110238144A1 (en) | 2011-09-29 |
CN105832403A (zh) | 2016-08-10 |
AU2017204568B2 (en) | 2018-10-04 |
US20160081736A1 (en) | 2016-03-24 |
CA2791494A1 (en) | 2011-09-29 |
EP2549963A2 (en) | 2013-01-30 |
US8273079B2 (en) | 2012-09-25 |
EP4230160A2 (en) | 2023-08-23 |
US20120116376A1 (en) | 2012-05-10 |
CN102821710B (zh) | 2016-06-22 |
WO2011119957A3 (en) | 2011-12-29 |
BR112012022132A2 (pt) | 2016-10-25 |
EP2549963A4 (en) | 2017-04-19 |
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EP4230160A3 (en) | 2023-12-06 |
JP2013523220A (ja) | 2013-06-17 |
AU2011230568B2 (en) | 2016-02-18 |
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