JP4756943B2 - 内視鏡用縫合装置 - Google Patents
内視鏡用縫合装置 Download PDFInfo
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- JP4756943B2 JP4756943B2 JP2005213483A JP2005213483A JP4756943B2 JP 4756943 B2 JP4756943 B2 JP 4756943B2 JP 2005213483 A JP2005213483 A JP 2005213483A JP 2005213483 A JP2005213483 A JP 2005213483A JP 4756943 B2 JP4756943 B2 JP 4756943B2
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Description
この発明は、このような事情に鑑みてなされたものであり、その主な目的は、病変部を含む全層を一括切除するに際して手技を容易にすることである。また、一括切除された後に速やかに患部が治癒されるようにすることである。
この内視鏡用縫合装置では、凸部を有する第一の把持片と第二の把持片とによって、処置対象部位にある切除部分の両側の2枚の生体組織が波状に挟み込まれる。このように2枚の生体組織を重ね合わせた状態にしてから、重ね合わせた生体組織に組織穿通針を貫通させることで、2枚の生体組織が互いに縫い合わされる。縫合部材には、基端側(内視鏡側)にストッパが設けられているので、基端側からの操作のみで処置対象部位を縫合した状態が維持される。
この場合、周辺組織と処置対象組織との間に組織規制部材を配置して、この組織規制部材によって縫合すべき生体組織の長さを規制する。その結果、縫合すべき生体組織が縫合部の把持部の先端部と基端部との間に収まり、縫いもらしが防止される。
この場合、押さえ部材本体を周辺組織に押し当てた状態で、処置対処部位を引き込む。このときに、組織規制部材によって縫合すべき生体組織の長さが規制され、縫合すべき生体組織が縫合部の把持部の先端部と基端部との間に収まり、縫いもらしが防止される。
第1の実施の形態について図1から図28を参照して詳細に説明する。
図1に示すように、内視鏡処置システム1は、体内に挿入される押さえ部材本体である長尺のオーバーチューブ2を有し、オーバーチューブ2は、可撓性のチューブ本体3の先端にチャンバー4が設けられている。チャンバー4は、チューブ本体3の先端部から拡径した後、円筒状に延びており、さらにチャンバー4の先端面には、可撓性の挿入ガイド5が延設されている。挿入ガイド5は、チャンバー4の軸線に対してオフセットされた位置に設けられた円筒状の部材である。チャンバー4の先端部で、挿入ガイド5に移行する移行部分は、挿入ガイド5に向かって斜めにカットされたテーパ部6になっている。
まず、図1に示すように、オーバーチューブ2に内視鏡7を挿通し、挿入部12の先端部を挿入ガイド5の先端から突出させる。内視鏡7の撮像部13の像をみながらオーバーチューブ2を挿入ガイド5側から体内に挿入する。挿入ガイド5は、チャンバー4よりも柔らかく、小径であるので、オーバーチューブ2をスムーズに体内に挿入することができる。そして、図10に示すように、オーバーチューブ2の側孔10が腸管Wの病変部W1に臨む位置まで挿入する。なお、病変部W1は、処置対象部位であって、一括切除される部位である。
また、チャンバー4の先端に可撓性で、細径の挿入ガイド5を設け、挿入ガイド5が内視鏡7の挿入部12や、体内の形状に合わせて変形するようにしたので、オーバーチューブ2を容易に目的部位に挿入することが可能になる。ここにおいて、チャンバー4先端にテーパ部6が設けられているので、腸管Wなどが湾曲しているときには、このテーパ部6が管壁に突き当たることでこれに倣うようにチャンバー4の向き変更させることができる。したがって、オーバーチューブ2の挿入がさらに容易になる。
なお、押さえ部材91や、押さえ部材95を組織規制部材として使用することも可能である。
図34から図39を参照して第2の実施の形態について説明する。なお、第1の実施の形態と同じ構成要素には同一の符号を付し、重複する説明は省略する。
この実施の形態では、チャンバーに設けられた側孔の形態が異なっている。すなわち、図34に示すように、側孔100は、細長の第1開口部101と、第1開口部101の先端側に連なるように設けられている第2開口部102とからなる巻き込み防止手段である。第1開口部101は、第1の実施の形態における側孔10と同じ長さ及び幅になっている。第2開口部102は、第1開口部101よりも幅広で、略円形に形成されている。
図40から図47を参照して第3の実施の形態について説明する。なお、前記各実施の形態と同じ構成要素には同一の符号を付し、重複する説明は省略する。
図40の断面図に示すように、チャンバー4には、側孔110が設けられている。側孔110の周方向の幅は、引き込む病変部W1の全層の厚さに比べて十分に大きい。ここで、チャンバー4の内周には、巻き込み防止手段となるスライドカバー111が周方向に移動自在に取り付けられている。スライドカバー111は、内視鏡7に向かう内周面である第一の面111Aと、処置対象部位に向かう外周面である第二の面111Bとを有し、側孔110の全体を内側から覆うことができる大きさを有している。
図46に示すように、スライドカバー111は、他端部に弾性部材であるコイルスプリング130の一端が取り付けられている。コイルスプリング130の他端は、チャンバー4の内周に設けられた突部131に固着されており、このコイルスプリング130によってスライドカバー111は側孔110を、隙間を残して閉鎖するように常に付勢されている。病変部W1を一括切除する際には、隙間から把持鉗子15で病変部W1をチャンバー4内に引き込む。この際に、病変部W1に押し戻されるようにしてスライドカバー111が突部131側に移動させられる。これによって、側孔110と押圧部111Cとによって形成される開口幅が広がった分だけ、処置対象部位がチャンバー4内に引き込まれる。スライドカバー111は、コイルスプリング130で付勢されているので、開口幅が必要以上に大きくなることは無く、このような狭い開口幅から他の臓器W3が引き込まれることはない。したがって、処置対象部位以外の周辺組織が押さえ付けられ、他の臓器W3の巻き込みが防止される。
図48から図57を参照して第4の実施の形態について説明する。なお、前記各実施の形態と同じ構成要素には同一の符号を付し、重複する説明は省略する。
図48に示すように、チャンバー4には、側孔110(第一の開口)が設けられており、この側孔110を閉塞可能なスライドカバー150がチャンバー4の外周に進退自在に取り付けられている。スライドカバー150は、第3の実施の形態のスライドカバー111と同様の機構、及び手元操作部121に接続されている。さらに、側孔110の形成位置よりも基端側には、側孔110よりも小さい開口部151(第二の開口)が設けられている。開口部151の大きさは、把持鉗子15の先端部を通すことはできるが、病変部W1の全体を引き込むことはできない程度の大きさとする。なお、この実施の形態では、内視鏡7、縫合装置8とは別に、把持鉗子15が2本挿通される。図49に示すように、把持鉗子15は、オーバーチューブ2の管壁に固定されたシース152,153に、一本ずつ挿通される。シース152は、その先端開口が開口部151に臨むように偏向されている。シース153は、その先端開口が側孔110に臨むように偏向されている。
図58から図61を参照して第5の実施の形態について説明する。なお、前記の各実施の形態と同じ構成要素には同一の符号を付し、重複する説明は省略する。
図58に示すように、オーバーチューブ2は、可撓性を有する長尺のチューブ本体3の先端部にチャンバー4が設けられており、チャンバー4の先端面からは、小径で可撓性を有する挿入ガイド5が延設されている。チャンバー4は、チューブ本体3や、挿入ガイド5に比べて硬度が高くなっており、先端面から傾斜しつつチャンバーを拡径するテーパ部6には、開口部としての側孔170が形成されている。
図62から図67を参照して第6の実施の形態について説明する。なお、前記の各実施の形態と同じ構成要素には同一の符号を付し、重複する説明は省略する。
図62及び図63に示すように、縫合装置8の縫合部180は、把持部として、第1ジョー32と、第1ジョー32に近接離間するようにスライド自在な第2ジョー42とを有している。
図68から図73を参照して第7の実施の形態について説明する。なお、前記の各実施の形態と同じ構成要素には同一の符号を付し、重複する説明は省略する。
図68から図70に示すように、縫合装置8の縫合部200は、把持部として、第1ジョー32と、第1ジョー32に対して開閉自在な第2ジョー42とを有している。第1ジョー32のシャフト部31には、組織穿通針51が進退自在に挿通されており、針部53の露出する部分には、縫合糸62が緩く結びつけられ、ノット201が形成されている。縫合糸62の他端部は体外に引き出されており、縫合糸62の一端部は、第1、第2ジョー32,42を迂回するようにして第1、第2ジョー32,42の先端側に引き回されており、先端に形成されているループ202は、チャンバー4の内壁に突設された引っ掛け部203(図68参照)に引っ掛けられている。組織穿通針51内には、フック204(図70参照)が進退自在に設けられている。フック204は、図1に示す第1操作部16のスライダ20に接続されている。さらに、組織穿通針51の外側には、ノット201を押圧可能なノットプッシャ205が進退自在に設けられている。
図74から図76を参照して第8の実施の形態について説明する。なお、第1の実施の形態と同じ構成要素には同一の符号を付し、重複する説明は省略する。
図74に示すように、縫合装置8は、縫合部210を有し、さらに縫合部210よりも先端側には、抜け止め用の当て布として用いられる第1プレジェット211が保持部212に保持されている。図74及び図75に示すように、第1プレジェット211は、長方径の角部が面取りされた薄肉の部材である。保持部212は、チャンバー4の内壁に突設されており、チャンバー4の径方向内側が開放された略U字形状を有し、第1プレジェット211の周縁部を挟み込むスリットが形成されている。この第1プレジェット211は、縫合具213を構成するもので、縫合具213は、この他に、Tバー61と、縫合糸62と、第2プレジェット214と、ストッパ65とから構成されている。第2プレジェット214は、ストッパ65の先端側に設けられ、その略中央に縫合糸62が貫通している。なお、第2プレジェット214は、第1プレジェット211と略同じ形状で、同じ材質から製造されている。
例えば、図77に示すような縫合具220を用いることが可能である。縫合糸62の先端には、Tバー61が取り付けられており、基端側は、固定部材221を貫通した後に、ループ66が形成されている。図78に示すように、固定部材221は、中央に縫合糸62が挿通される孔222が形成された細長の板材からなり、この板材の両端部が縫合糸62の基端部側に斜めに折り曲げられることで、板バネ部224が形成されている。板バネ部224は、対向する端部224Aが半円状に切り欠かれており、縫合糸62に摺接させられている。この縫合具220は、板バネ部224が縫合糸62のループ66側に、つまり端部224Aを開く方向には弾性変形することができるので、固定部材221がTバー61に近接する方向の移動は許容する。しかしながら、板バネ部224は、端部224Aを閉じる方向には端部224A同士が干渉して変形できない。さらに、縫合糸62が端部224Aによって締め付けられるので、固定部材221はループ66側には移動することができない。
また、処置対象部位を内視鏡7側に引き込む手段は、把持鉗子15に限定されず、例えば、吸引によって引き込むなど、種々の手段を採用することができる。
2 オーバーチューブ(押さえ部材本体,組織規制部材)
4a,93a,111A 第一の面
4b,93b,111B 第二の面
4c,4d,93c,111C 押圧部
5 挿入ガイド
6 テーパ部
7 内視鏡(組織規制部材)
8 縫合装置(処置手段、内視鏡用縫合装置)
10,90,94,100 側孔(巻き込み防止手段)
15 把持鉗子(引き込み手段)
21 第1挿入部(本体)
27 第2挿入部(本体)
30,180,200,210,240 縫合部
32 第1ジョー(把持部、第一の把持片)
34 歯(第一凸部)
34a 頂部(第一の頂部)
35 歯(第二凸部)
35a 頂部(第二の頂部)
42 第2ジョー(把持部、第二の把持片)
44 歯(第三凸部)
44a 頂部(第三の頂部)
48 組織規制部
51 組織穿通針
62 縫合糸(縫合部材)
65 ストッパ
85 スネア(組織規制部材)
87 スネア部(組織規制部)
91,95 押さえ部材
93 押さえ部材本体
96 アーム(押さえ部材本体)
110 側孔(開口、第一の開口)
111 スライドカバー(巻き込み防止手段)
130 弾性部材
140 弁体(第一巻き込み防止手段)
141 弁体(第二巻き込み防止手段)
151 開口部(第二の開口)
156 バルーン(圧排部材)
163 バスケット(圧排部材)
168 圧排部材
170 側孔(開口部)
W1 病変部(処置対象部位)
α,β 生体組織(処置対象部位)
W3 他の臓器
Claims (4)
- 先端部と基端部と長手軸とを有する本体と、
前記本体の前記先端部に設けられ、生体組織を把持する把持部と前記把持部にて把持した前記生体組織を前記本体の長手方向に進退することで縫合する組織穿通針とを有する縫合部と、
前記縫合部に設けられた第一の把持片と、
前記縫合部に設けられ、前記第一の把持片に対して相対的に近接、離間自在な第二の把持片と、
前記第一の把持片から前記第二の把持片に向けて突出した第一の頂部を有する第一凸部と、
前記第一凸部に隣接し、前記第一の把持片から前記第二の把持片に向けて突出した第二の頂部を有する第二凸部と、
前記第二の把持片から前記第一の把持片に向けて突出し、前記第一凸部と前記第二凸部との間に嵌り込む第三の頂部を有する第三凸部と、
前記組織穿通針に着脱自在であり、前記本体の長手方向基端側にストッパを有する縫合部材と、
を備え、
前記第一凸部には、前記第一の把持片の第一の長手方向と平行に前記第一凸部を貫通する第一の貫通孔が形成され、
前記第二凸部には、前記第一の長手方向と平行に前記第二凸部を貫通する第二の貫通孔が形成され、
前記第三凸部には、前記第二の把持片の第二の長手方向と平行に前記第三凸部を貫通する第三の貫通孔が形成され、
前記第一の把持片と前記第二の把持片とが相対的に近付いたときに前記組織穿通針を前記本体の長手方向に前進させると、前記第一の貫通孔、前記第二の貫通孔および前記第三の貫通孔が一直線上に並ぶことで、前記組織穿通針が前記第一の貫通孔、前記第二の貫通孔および前記第三の貫通孔をそれぞれ通ることを特徴とする内視鏡用縫合装置。 - 前記第一凸部には、前記第一の貫通孔から前記第一の頂部に開口する第一のスリットが形成され、
前記第二凸部には、前記第二の貫通孔から前記第二の頂部に開口する第二のスリットが形成され、
前記第三凸部には、前記第三の貫通孔から前記第三の頂部に開口する第三のスリットが形成され、
前記縫合部材は、前記第一のスリット、前記第二のスリットおよび前記第三のスリットを通ることを特徴とする請求項1に記載の内視鏡用縫合装置。 - 処置対象組織に隣接する周辺組織と、前記縫合部との間に、前記処置対象組織を前記把持部の前記先端部と前記基端部との間に配置するための組織規制部材を有することを特徴とする請求項1に記載の内視鏡用縫合装置。
- 前記組織規制部材は、生体内に挿入可能で生体組織の処置対象部位を処置する内視鏡と前記処置対象部位との間に配置され、前記処置対象部位の周囲に当接して前記周辺組織を押圧する押さえ部材本体であり、
前記押さえ部材本体は、
前記内視鏡に面する第一の面と、
前記処置対象部位に面する第二の面と、
前記第一の面と前記第二の面とをつなぐ面内にあり、前記押さえ部材本体を経由して前記処置対象部位を前記内視鏡側に引き込む際に前記処置対象部位の引き込み方向に対して略垂直方向に押圧力を生じさせ、引き込まれた前記処置対象部位の長手方向の長さを前記把持部の前記先端部と前記基端部との間に収まる長さに保つ組織規制部と、
を有することを特徴とする請求項3に記載の内視鏡用縫合装置。
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US11/996,447 US8876698B2 (en) | 2005-07-22 | 2006-07-21 | Pressing member, endoscopic treatment system, and endoscopic suturing device |
PCT/JP2006/314527 WO2007011039A1 (ja) | 2005-07-22 | 2006-07-21 | 押さえ部材及び内視鏡処置システム並びに内視鏡用縫合装置 |
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GB9405790D0 (en) | 1994-03-23 | 1994-05-11 | Univ London | Sewing device |
JPH08547A (ja) | 1994-06-23 | 1996-01-09 | Koushinshiya:Kk | 内視鏡挿入ガイド |
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JP3429685B2 (ja) * | 1997-10-06 | 2003-07-22 | オリンパス光学工業株式会社 | 内視鏡案内管 |
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JP4231743B2 (ja) * | 2003-07-07 | 2009-03-04 | オリンパス株式会社 | 生体組織切除装置 |
US7118528B1 (en) * | 2004-03-16 | 2006-10-10 | Gregory Piskun | Hemorrhoids treatment method and associated instrument assembly including anoscope and cofunctioning tissue occlusion device |
JP4734054B2 (ja) * | 2005-07-20 | 2011-07-27 | オリンパスメディカルシステムズ株式会社 | 医療用処置装置 |
JP4756943B2 (ja) | 2005-07-22 | 2011-08-24 | オリンパス株式会社 | 内視鏡用縫合装置 |
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JP2007029195A (ja) | 2007-02-08 |
US20090312602A1 (en) | 2009-12-17 |
EP1908424B1 (en) | 2016-07-06 |
EP1908424A1 (en) | 2008-04-09 |
US8876698B2 (en) | 2014-11-04 |
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