JP4319770B2 - Intestinal clip - Google Patents

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Publication number
JP4319770B2
JP4319770B2 JP2000231266A JP2000231266A JP4319770B2 JP 4319770 B2 JP4319770 B2 JP 4319770B2 JP 2000231266 A JP2000231266 A JP 2000231266A JP 2000231266 A JP2000231266 A JP 2000231266A JP 4319770 B2 JP4319770 B2 JP 4319770B2
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Prior art keywords
intestinal tract
clip
intestinal
clamping
clamping member
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JP2000231266A
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JP2002034998A (en
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秀雄 永井
正明 松谷
正俊 福田
茂男 鈴木
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Mani Inc
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Mani Inc
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Description

【0001】
【発明の属する技術分野】
本発明は、小腸や大腸等の手術に際し、腸管を効果的に挟持し得るように構成した腸管用クリップに関するものである。
【0002】
【従来の技術】
小腸や大腸に代表される腸管を手術する場合、患部の切除によって内容物が出て来ないように患部の両脇を腸鉗子によって挟持している。そして、患部を切除した後、2つの腸鉗子を互いに接近させることで腸管の端部を引き寄せ、この状態を保持して吻合している。腸管を吻合する場合、吻合すべき2つの腸管の切断面を視認し得るように、夫々の腸管を屈折させると共に接近させた状態で挟持しておくことが行なわれる。
【0003】
腸管の吻合に際し、腸管の開口部から内容物が出てしまうことを防止するには、該腸管を均等な力で挟持して隙間ができないようにする必要がある。挟持すべき腸管は太いことが多く、腸鉗子は腸管を挟んだとき挟持部が回動支点から充分に長く形成されており、これにより、腸管に対し均等な力を加えることが出来るように構成されている。
【0004】
腸管を挟持し得るものではないが、血管に対し均等な力を加えて挟持し得る技術として特表平10-509602号公報に開示された血管用クリップが提案されている。この血管用クリップでは図5に示すように、一対の挟持部材51が相対的に平行移動し得るように構成されており、医師が手で操作して挟持部材51によって血管の端部を挟み、その後は、バネ52によって一対の挟持部材51を互いに接近させる方向に付勢することで、血管の端部を平行に且つ均等な力で挟持することが出来る。
【0005】
また図6に示すように、手術の際に血管の端部を挟持して保持し得るように構成された血管用クリップも提案されている。この血管用クリップでは1本の軸61に2つの血管用クリップ62が摺動可能に取り付けられており、夫々の血管用クリップ62によって血管63を挟持した後、該血管用クリップ62を軸61に沿って摺動させることで、血管63の端部を引き寄せることが出来る。そしてこの状態を維持して縫合することが出来る。
【0006】
【発明が解決しようとする課題】
腸管の吻合に際し、上記腸鉗子で腸管を挟持すると、腸鉗子の指挿入部が医師の手元側に位置するため、この指挿入部に糸が引っ掛かり易くなり、その都度医師が引っ掛かった糸をほどく作業を行なうことになる。しかし、このような作業を行なうことは手術時間の増大や医師の精神的な負担の増大、患者の負担の増大につながり好ましくない。このため、指挿入部に布をかけて覆うようにしているが、これでも作業が煩雑になるという問題がある。
【0007】
また腸管の吻合に際し、上記した2本の腸鉗子によって腸管の端部を挟持して引き寄せた場合、これらの腸鉗子が共に個々に独立して構成されているため、腸鉗子と腸鉗子の間の距離が大きくなってしまい、効果的な吻合手術が出来ないという問題がある。
【0008】
また腸管の吻合に際し、吻合すべき腸管の端部は略同じ高さに位置することが作業性を向上させる上で好ましい。しかし、独立した2つの腸鉗子を用いた場合には、高さを略同じ位置に保持することが困難であり、作業性の向上をはかることが困難であるという問題がある。
【0009】
また上記した血管用クリップは端部を互いに対向させて引き寄せるものであり、腸管の管壁どうしを接近させる腸管の吻合に使用し得ないという問題がある。
【0010】
本発明の目的は、腸管の端部に対し均等に力を加えて閉塞することが出来、且つ2つの端部を互いに接近させた状態で保持することが出来る腸管用クリップを提供することにある。
【0011】
【課題を解決するための手段】
上記課題を解決するために本発明に係る腸管用クリップ(以下単に「クリップ」という)は、略中央で分割された2つの部材として構成されている中央の固定挟持部材とその両側に配置された2つの移動挟持部材とを有し、前記固定挟持部材と2つの移動挟持部材とが開閉方向に並列して2つの挟持口を形成し、且つ前記2つの移動挟持部材が前記固定挟持部材に対して平行移動可能に構成され、これらの移動挟持部材を平行移動させて2つの腸管口を独立して挟持し得るように構成すると共に、1つの挟持口を形成する腸管用クリップに分離し得るように構成したものである。
【0012】
上記クリップでは、中央にある固定挟持部材の両側に夫々互いに平行移動可能な移動挟持部材を配置し、これら2つの移動挟持部材を固定挟持部材に向けて移動させることで、2つの腸管口を独立して且つ均等な力で平行に挟持することが出来る。このため、並列した2つの挟持口を接近させて形成することで、これらの挟持口によって2つの腸管口を互いに接近させた状態で挟持することが出来る。特に、2つの挟持口が互いに独立して形成されているため、吻合すべき2つの腸管口を略同じ高さに保持して挟持することが可能となり、手術の際の作業性を向上させることが出来る。そして、挟持された腸管口は中央にある固定挟持部材の幅寸法に応じて離隔することとなり、この固定された挟持部材の寸法を適宜設定することで、2つの腸管口の離隔寸法を設定することが出来る。従って、固定挟持部材の幅寸法を吻合すべき部位に対応させて最適な値とすることで、最も高い作業性を発揮することが出来る。
【0013】
特に、前記固定挟持部材略中央で分割された2つの部材として構成され、1つの挟持口を形成する腸管用クリップに分離し得るように構成されているため、予め分離させたクリップによって切除すべき患部の両脇を挟持しておき、患部を切除した後、夫々のクリップを引き寄せて合体することで、吻合の段取りを容易にすることが出来る。
【0014】
【発明の実施の形態】
以下、上記クリップの好ましい実施形態について図を用いて説明する。図1は参考例に係るクリップの構成を説明する正面図である。図2はクリップを構成する固定挟持部材を含む本体分を説明する図である。図3はクリップを構成する移動挟持部材を説明する図である。図4は実施例に係る分離可能なクリップを説明する図である。
【0015】
本発明に係るクリップは、2つの腸管の端部を夫々独立して挟持することで、腸管口から内容物が出ることを防止すると共に挟持した状態を保持して容易に吻合し得るように構成したものである。このため、腸管を挟持するために中央の固定挟持部材とその両側に配置された移動挟持部材を有しており、2つの移動挟持部材が平行に移動し得るように構成され、該平行移動に伴って腸管の挟持及び挟持した腸管の開放を行なうことが可能である。
【0016】
本発明に係るクリップでは、2つの移動挟持部材と、略中央で分割された2つの部材として構成された固定挟持部材とによって構成されている。そして2つの移動挟持部材を固定挟持部材に接近させるように平行移動させて、対向する移動挟持部材と固定挟持部材との間に腸管の端部を挟持し、或いは2つの移動挟持部材を固定挟持部材から離隔するように平行移動させて、挟持した腸管を開放することが可能である。特に、移動挟持部材が平行に移動することで、腸管を平行に且つ均等な力を付与して挟持することが可能である。
【0017】
また本発明に係るクリップでは、1つの挟持口を持った2つのクリップに分離することが可能なように構成している。このため、腸管を切除するのに先立って、切除すべき患部の両脇を分離したクリップによって挟持しておき、切除後、夫々のクリップを引き寄せて合体することで、2つの腸管を隣接させて保持することが可能となり、容易に吻合することが可能である。
【0018】
移動挟持部材の移動による腸管の挟持或いは開放は、医師が手で移動挟持部材を操作して行えるように構成しても良く、ネジのような伝導手段を利用しても良い。また固定挟持部材と移動挟持部材による腸管の挟持を維持するに際し、該固定挟持部材と移動挟持部材に対しバネような付勢手段によって力を加えても良く、ネジのような部材によって締め付けるようにしても良い。更に、移動挟持部材と固定挟持部材との間にラチェット機構を形成しておき、移動挟持部材を移動させた後、ラチェットによって移動を阻止して固定し得るように構成しても良い。
【0019】
また移動挟持部材の平行移動は、厳密な意味で平行である必要はなく、腸管を挟持する際に、該腸管を横断する方向に略均等な力を及ぼし得る程度に平行であれば良い。即ち、移動挟持部材の平行移動とは、腸鉗子のように支点を中心として回動することで腸管を挟持し得るものと比較して充分に平行であれば良い。
【0020】
以下、参考例に係るクリップAの構成について、図1〜図3により説明する。
【0021】
図に於いて、クリップAは、中央に固定挟持部材1を配置すると共に、該固定挟持部材1の両側に、夫々移動挟持部材2を配置して構成されている。また2つの移動挟持部材2は、バネ3によって互いに接近する方向に付勢され、この付勢力によって固定挟持部材1に接触している。即ち、固定挟持部材1と移動挟持部材2とによって挟持口が形成されると共に、この挟持口に図示しない腸管を挟持したとき、この腸管にはバネ3による付勢力が作用する。
【0022】
固定挟持部材1は筒状の本体部4と一体的に形成されており、本体部4の太さ方向に沿った両側の面が挟持面1aとして形成されている。本体部4は、移動挟持部材2の移動方向を案内する機能を有するものであり、所定の太さと長さを有する円筒状に形成され、長さ方向の略中央に固定挟持部材1が突設されている。そして本体部4に移動挟持部材2の筒部2bが移動可能に嵌合し、且つバネ3が貫通して配置される。
【0023】
本体部4の上面である固定挟持部材1を形成した面には、長さ方向に溝4aが形成されている。この溝4aは、移動挟持部材2の筒部2bが本体部4の内部に嵌合したとき、移動挟持部材2が貫通するものであり、該移動挟持部材2を直線的に移動させる際の案内としての機能を有するものである。
【0024】
本体部4の長さ寸法は特に限定するものではなく、移動挟持部材2の筒部2bを嵌合した状態で移動させる際に、円滑に平行移動を行なわせることが可能な長さであれば良い。本実施例では、吻合の際に医師の邪魔にならない程度の長さである120mm以下の寸法で、且つ移動挟持部材2の円滑な平行移動を行なわせるのに必要な60mm以上の範囲の寸法に適宜設定している。
【0025】
また本体部4は、内部に嵌合した移動挟持部材2の筒部2bが平行移動する際のガイドとしての機能も有する。特に、移動挟持部材2が移動する際にガタツクことなく円滑な平行移動を実現するには、本体部4の径は10mm〜20mmの範囲であることが好ましい。
【0026】
本体部4の長手方向に沿った固定挟持部材1の寸法(幅寸法)は、2つの腸管を吻合する際にこれらの腸管の間隔寸法となる。従って、固定挟持部材1の幅寸法は一義的にされるものではなく、吻合の対象となる腸管の種類に応じて5mm〜20mmの範囲で設定される。しかし固定挟持部材1の幅寸法は、必ずしも前記範囲に限定すべきではない。
【0027】
また固定挟持部材1,移動挟持部材2の長さ(腸管を挟持し得る部位の長さ)は、挟持すべき腸管の太さに応じて40mm〜80mmの範囲で設定される。しかし、各挟持部材1,2の長さ寸法は、必ずしも前記範囲に限定すべきではない。
【0028】
移動挟持部材2は、固定挟持部材1と共に腸管を挟持する機能を有するものであり、該固定挟持部材1の挟持面1aと対向する面に挟持面2aが形成されている。また移動挟持部材2の長さ(腸管を挟持し得る部位の長さ)を確保し得る位置には本体部4に嵌合する筒部2bが形成されている。筒部2bの外面には、筒部2bの長手方向に伸びる図示しない突起が形成されており、本体部4の内面に形成された図示しない溝と係合して摺動し、内部にはバネ3を貫通し得るように形成されている。
【0029】
移動挟持部材2には、レバー2cが挟持面2aから見て筒部2bの反対側に突出して形成されている。このレバー2cは筒部2bとの間に本体部4を嵌合する円弧状の溝を形成しており、手術に際しては医師の手によって操作され、固定挟持部材1に対して腸管を挟持し、或いは挟持している腸管を開放させるように移動挟持部材2を移動させる機能を有するものである。このため、レバー2cは操作性を考慮して突出部位の長さを10mm〜40mmの範囲で設定されている。
【0030】
2つの移動挟持部材2の夫々の筒部2bの一方側の端部(挟持面2aとは反対側の端部、即ち、図1の左側の移動挟持部材2の筒部2bに於ける左側の端部及び右側の移動挟持部材2の筒部2bに於ける右側の端部)にはキャップ5が設けられている。このキャップ5は筒部2bを閉鎖すると共にバネ3を係止する機能を有するものである。
【0031】
キャップ5は凸部5aが筒部2bの内部に挿入し得る寸法を持って形成されると共に該凸部にバネ3の端部を係止する係止部5bが形成され、且つ外形が筒部2bの外形と略等しい寸法で形成されている。従って、キャップ5を筒部2bの一方側の端部に取り付けたとき、等しい外形を持って両者は一体化する。
【0032】
バネ3は、2つの移動挟持部材2に取り付けたキャップ5の係止部5bの間に張り渡され、これらの移動挟持部材2を固定挟持部材1側に圧接するように付勢している。バネ3の力は挟持すべき腸管に応じて異なり、一義的に設定し得るものではない。しかし、凡そ500g〜3000gの範囲であり、腸管が小腸である場合、1000g〜2000gの範囲が好ましい。
【0033】
図1に於いて、6は本体部4の両端に取り付けたレバーであり、溝4aを設けた本体部4の端部をリング状に挟んで補強すると共に、移動挟持部材2を移動させる際に、医師が該レバー6と移動挟持部材2のレバー2cとを挟んで操作するためのものである。このレバー6は、移動挟持部材2のレバー2cと等しい長さを持って形成されている。
【0034】
上記各挟持部材1,2,キャップ5,レバー6の材質は特に限定するものではなく、ステンレス鋼に代表される金属を用いても良く、また合成樹脂の成形品としても良い。本実施例では、前記部品をポリカーボネートによる射出成形によって得ている。このように合成樹脂によって形成することで、軽量化をはかることが可能である。またバネ3はステンレス鋼を用いて形成している。
【0035】
次に、クリップAを構成する手順について説明する。先ず、固定挟持部材1の本体部4に両側から移動挟持部材2の筒部2bを挿入する。このとき、移動挟持部材2は本体部4の溝4aに嵌合され、且つ本体部4は移動挟持部材2の筒部2bとレバー2cとの間に形成された溝に嵌合される。次に、キャップ5の係止部5bにバネ3の端部を係止し、このバネ3を一方の移動挟持部材2の筒部2bに挿入し、キャップ5を該筒部2bの端部に固定する。
【0036】
バネ3の自由端を、他方の移動挟持部材2の筒部2bを通過させて取り出し、該端部をキャップ5に係止した後、このキャップ5を他方の移動挟持部材2の筒部2bの端部に固定する。その後、本体部4の両端にレバー6を取り付けて固定することで、クリップAを構成することが可能である。
【0037】
上記クリップAでは、腸管を吻合するに際し、医師が腸管の端部を引き寄せて片手で一方側のレバー6とレバー2cを操作することで、移動挟持部材2を固定挟持部材1から離隔させ、これらの間に腸管の端部を挿入した後、手を外すことで、移動挟持部材2はバネ3に付勢されて固定挟持部材1側に移動し、両挟持部材1,2によって1つの腸管の端部を挟持することが可能である。同様にして他方の挟持部材1,2によって、他の1つの腸管の端部を挟持することが可能である。
【0038】
上記の如くしてクリップAによって腸管を挟持したとき、2つの腸管の端部を略等しい高さに保持して吻合の際の作業性を向上させることが可能となる。
【0039】
次に、実施例に係る分離可能に構成したクリップBの構成について図4により説明する。尚、図に於いて、前述の参考例と同一の部分及び同一の機能を有する部分には同一の符号を付して説明を省略する。
【0040】
固定挟持部材10は略中央で分割された2つの部材11,12として構成されている。夫々の部材11,12には本体部13,14が一体的に形成されている。これらの本体部13,14は互いに嵌合して合体し、嵌合を離脱して分離し得るように構成されている。
【0041】
即ち、本体部13の、他の本体部14と対向する面に穴13aが形成されており、この穴13aの部分にバネ3を係止する係止部13bが形成されている。また本体部14の、他の本体部13と対向する面には、穴13aに嵌合する突起14aが形成されており、該突起14aにバネ3を係止する係止部14bが形成されている。
【0042】
従って、突起14aを穴13aから離脱させることで、固定挟持部材11,12は夫々本体部13,14に移動挟持部材2を取り付けた状態で分離され、且つ突起14aを穴13aに嵌合させると共に固定することで、固定挟持部材11,12を合体することが可能である。
【0043】
突起14aを穴13aに嵌合させて固定挟持部材11,12を合体するに際し、両者を固定する方式については特に限定するものではない。例えば、穴13aの側壁を貫通したネジを設け、該ネジを締め付けることで両者を固定することが可能であり、穴13a及び突起14aの一部を貫通させた孔を形成しておき、この孔にピンを挿通することで両者を固定することが可能であり、更に、バヨネット機構を構成して両者を固定することも可能である。このように、2つに分離した固定挟持部材11,12を合体して固定する方式には種々の機構があり、これらの中から最適なものを選択して利用することが可能である。
【0044】
上記各実施例に於いて、移動挟持部材2の挟持面2aを先端側から固定挟持部材1の挟持面1aに接触し得るように僅かに傾けておくことが好ましい。この傾き角度は最大でも10度である。このような傾きを設けておくことで、各挟持部材1,2の間に腸管を挟持して付勢したとき、反力で移動挟持部材2に反りが生じたり、筒体2bが本体部4の内部で傾斜した場合であっても、各挟持面1a,2aの平行度合いを良好な状態に保持することが可能である。
【0045】
また固定挟持部材1の挟持面1a及び移動挟持部材2の挟持面2aに、長手方向に沿った溝、及び溝と対向する突起を形成しておくことが好ましい。このような溝,突起を形成しておくことで、腸管を挟持する際に閉塞を確実にすることが可能であり、挟持能力の向上をはかることが可能である。更に、溝及び突起の形状を波形にすることによってより挟持能力の向上をはかることが可能である。
【0046】
また操作用のレバー2c,6の本体部4からの突出長さが小さく且つ腸鉗子のように指挿入部分がないため、吻合時に発生した糸の絡まりを防止することが可能である。このため、特別に布で覆うような作業が不要となり作業性の向上をはかることが可能である。
【0047】
合成樹脂製のクリップAでは、各レバー2c,6に袋状のゴムを被せ、該袋の上から操作し得るように構成することが好ましい。このように構成することによって、糸が絡まることを確実に防止すると共に、万一レバー2c,6が破断しても落下することを防止して安全性を確保することが可能である。
【0048】
【発明の効果】
以上詳細に説明したように本発明に係るクリップでは、中央の固定挟持部材とその両側に配置されて平行移動する2つの移動挟持部材によって2つの挟持口を形成することが出来るため、腸管の端部を挟持する際に、腸管を平行に均等に挟持して内容物が出ることを防止出来る。また腸管を略同じ高さで挟持すると共に互いに接近させることが出来る。このため、吻合の際の作業性を向上させることが出来る。
【0049】
た、2つの腸管を挟持したときの距離を固定挟持部材の寸法に応じて設定することが出来る。このため、吻合の際の作業性を向上させることが出来る。
【0050】
また夫々1つの挟持口を有するクリップに分離し得るように構成されているため、切除手術に先立って分離したクリップによって切除すべき患部の両脇を挟持しておき、切除後、これらのクリップを引き寄せて互いに合体させることで、吻合を行なうことが出来る。このため、腸管の端部を挟持し直す必要がなく、作業性を向上させることが出来る。
【図面の簡単な説明】
【図1】参考例に係るクリップの構成を説明する正面図である。
【図2】クリップを構成する固定挟持部材を含む本体部を説明する図である。
【図3】クリップを構成する移動挟持部材を説明する図である。
【図4】実施例に係る分離可能なクリップを説明する図である。
【図5】従来の血管用クリップを説明する図である。
【図6】従来の血管用クリップを説明する図である。
【符号の説明】
A,B クリップ
1 固定挟持部材
1a,2a 挟持面
2 移動挟持部材
2b 筒部
2c,6 レバー
3 バネ
4 本体部
4a 溝
5 キャップ
10 固定挟持部材
11,12 部材
13,14 本体部
13a 穴
13b,14b 係止部
14a 突起
[0001]
BACKGROUND OF THE INVENTION
TECHNICAL FIELD The present invention relates to an intestinal tract clip configured so that an intestinal tract can be effectively clamped during an operation on a small intestine or a large intestine.
[0002]
[Prior art]
When operating the intestinal tract represented by the small intestine and the large intestine, both sides of the affected part are clamped by intestinal forceps so that the contents do not come out by excision of the affected part. And after excising the affected part, the two intestinal forceps are brought close to each other to draw the end of the intestinal tract, and this state is maintained and anastomosis is performed. When an intestinal tract is anastomosed, the respective intestinal tracts are refracted and held close together so that the cut surfaces of the two intestinal tracts to be anastomosed can be visually recognized.
[0003]
In order to prevent the contents from coming out of the opening of the intestinal tract during an intestinal anastomosis, it is necessary to hold the intestinal tract with equal force so that there is no gap. The intestinal tract to be clamped is often thick, and when the intestinal forceps are clamped, the clamping part is formed sufficiently long from the pivot point so that an equal force can be applied to the intestinal tract. Has been.
[0004]
A clip for blood vessels disclosed in Japanese Patent Application Laid-Open No. 10-509602 has been proposed as a technique capable of sandwiching an intestinal tract by applying an equal force to a blood vessel. In this vascular clip, as shown in FIG. 5, the pair of clamping members 51 are configured to be relatively movable, and a doctor operates the hand to pinch the end of the blood vessel with the clamping member 51, Thereafter, the end portions of the blood vessels can be clamped in parallel and with equal force by urging the pair of clamping members 51 toward each other with the spring 52.
[0005]
Further, as shown in FIG. 6, a blood vessel clip configured to sandwich and hold an end portion of a blood vessel during surgery has also been proposed. In this blood vessel clip, two blood vessel clips 62 are slidably attached to one shaft 61, and after the blood vessel 63 is sandwiched between the blood vessel clips 62, the blood vessel clip 62 is attached to the shaft 61. By sliding along, the end of the blood vessel 63 can be drawn. This state can be maintained and stitched.
[0006]
[Problems to be solved by the invention]
When the intestinal tract is clamped with the above-mentioned intestinal forceps when the intestinal tract is anastomosed, the finger insertion part of the intestinal forceps is positioned on the proximal side of the doctor, so that the thread is easily caught on the finger insertion part. Will work. However, it is not preferable to perform such work because it increases the operation time, the mental burden on the doctor, and the burden on the patient. For this reason, the finger insertion part is covered with a cloth, but there is still a problem that the operation becomes complicated.
[0007]
Further, when the intestinal tract is anastomosed and the end of the intestinal tract is sandwiched and pulled by the two intestinal forceps described above, both of these intestinal forceps are configured independently of each other. There is a problem that effective anastomosis surgery cannot be performed.
[0008]
In addition, when the intestinal tract is anastomosed, it is preferable that the end portions of the intestinal tract to be anastomosed are positioned at substantially the same height in order to improve workability. However, when two independent intestinal forceps are used, it is difficult to maintain the height at substantially the same position, and there is a problem that it is difficult to improve workability.
[0009]
Also, the above-mentioned clip for blood vessels attracts the end portions facing each other, and there is a problem that it cannot be used for intestinal anastomosis in which the tube walls of the intestinal tract are brought close to each other.
[0010]
An object of the present invention is to provide a clip for the intestinal tract that can be closed by applying force equally to the end of the intestinal tract, and that can hold the two ends close to each other. .
[0011]
[Means for Solving the Problems]
Clip intestine according to the present invention in order to solve the above problem (hereinafter simply referred to as "clip") includes a central fixed clamping member that is configured as two members which are divided at a substantially central, disposed on both sides of the It has two and moving clamping member, wherein the fixing clamping member and the two mobile clamping member is in parallel to the opening and closing direction to form two gripping openings, and the two mobile clamping member the fixed clamping member The movable clamping member is configured to be parallelly movable so that the two intestinal tracts can be clamped independently and separated into intestinal clips that form a single clamping port. It is configured to obtain .
[0012]
In the above clip, the movable holding members that can move in parallel with each other are arranged on both sides of the fixed holding member in the center, and these two moving holding members are moved toward the fixed holding member, so that the two intestinal tract ports are independent. And can be held in parallel with equal force. For this reason, by forming two holding ports arranged in parallel, the two intestinal tract ports can be held close to each other by these holding ports. In particular, since the two clamping openings are formed independently of each other, the two intestinal tract openings to be anastomosed can be held and held at substantially the same height to improve workability during surgery. I can do it. The clamped intestinal tract is separated according to the width of the fixed clamping member at the center, and the dimension of the fixed clamping member is set appropriately to set the separation dimension of the two intestinal tracts. I can do it. Therefore, the highest workability can be exhibited by setting the width of the fixed clamping member to an optimum value corresponding to the site to be anastomosed.
[0013]
In particular, the fixed clamping member is configured as two members which are divided at a substantially central, because it is configured so as to separate the intestine clip forming one clamping opening, to excised by clip is separated in advance By holding both sides of the affected part and excising the affected part, the respective clips can be pulled and combined to facilitate setup of the anastomosis.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, preferred embodiments of the clip will be described with reference to the drawings. FIG. 1 is a front view illustrating the configuration of a clip according to a reference example. FIG. 2 is a view for explaining a main body portion including a fixed clamping member constituting the clip. FIG. 3 is a view for explaining the movable holding member constituting the clip. FIG. 4 is a diagram illustrating a separable clip according to the present embodiment.
[0015]
The clip according to the present invention is configured so that the contents of the intestinal tract can be prevented from coming out from the intestinal tract and can be easily anastomosed by holding the end portions of the two intestinal tracts independently. It is a thing. For this reason, in order to clamp the intestinal tract, it has a central fixed clamping member and movable clamping members arranged on both sides thereof, and the two movable clamping members are configured to be able to move in parallel. Accordingly, the intestinal tract can be clamped and the clamped intestinal tract can be opened.
[0016]
The clip according to the present invention includes two movable holding members and a fixed holding member configured as two members divided substantially at the center . Then, the two moving holding members are moved in parallel so as to approach the fixed holding member, and the end portion of the intestinal tract is held between the opposed moving holding member and the fixed holding member, or the two moving holding members are fixedly held. It is possible to open the sandwiched intestinal tract by moving it in parallel so as to be separated from the member. In particular, when the movable clamping member moves in parallel, it is possible to clamp the intestinal tract in parallel and with an equal force applied.
[0017]
In addition, the clip according to the present invention is configured so that it can be separated into two clips having one clamping port. For this reason, prior to excising the intestinal tract, both sides of the affected area to be excised are clamped by separate clips, and after excision, the two intestinal tracts are placed adjacent to each other by pulling the respective clips together. It can be held and can be easily anastomosed.
[0018]
Moving clamping or opening of the intestine by moving pinching member may be configured to so that can operate the mobile clamping member doctor hand, it may be utilized conducting means such as screws. Also upon maintaining the holding of the intestinal by fixed clamping member and the moving clamping member may be a force by a biasing means such as a spring to the stationary clamping member and the moving clamping members, to clamp the member such as a screw Anyway. Further, a ratchet mechanism may be formed between the movable holding member and the fixed holding member, and after the movable holding member is moved, the ratchet mechanism may be used to prevent the movement and fix the ratchet mechanism.
[0019]
Further, the parallel movement of the movable holding member does not have to be parallel in a strict sense, and may be parallel to such an extent that a substantially uniform force can be exerted in the direction across the intestinal tract when the intestinal tract is held. In other words, the parallel movement of the movable holding member may be sufficiently parallel as compared with the case where the intestinal tract can be held by rotating around the fulcrum as in the intestinal forceps.
[0020]
Hereinafter, the configuration of the clip A according to the reference example will be described with reference to FIGS.
[0021]
In the figure, the clip A is configured by disposing a fixed holding member 1 in the center and moving moving members 2 on both sides of the fixed holding member 1. Further, the two movable holding members 2 are urged toward each other by the spring 3 and are in contact with the fixed holding member 1 by this urging force. That is, a clamping port is formed by the fixed clamping member 1 and the movable clamping member 2, and when an intestinal tract (not shown) is clamped in the clamping port, a biasing force by the spring 3 acts on the intestinal tract.
[0022]
The fixed clamping member 1 is formed integrally with the cylindrical main body 4, and both surfaces along the thickness direction of the main body 4 are formed as clamping surfaces 1 a. The main body 4 has a function of guiding the moving direction of the movable holding member 2, is formed in a cylindrical shape having a predetermined thickness and length, and the fixed holding member 1 protrudes at substantially the center in the length direction. Has been. And the cylinder part 2b of the movement clamping member 2 is fitted in the main-body part 4 so that a movement is possible, and the spring 3 penetrates and is arrange | positioned.
[0023]
A groove 4a is formed in the length direction on the surface of the main body 4 on which the fixed clamping member 1 is formed. The groove 4a is formed so that the movable clamping member 2 penetrates when the cylindrical portion 2b of the movable clamping member 2 is fitted inside the main body 4, and guidance when the movable clamping member 2 is moved linearly. It has the function as.
[0024]
The length dimension of the main body part 4 is not particularly limited as long as the body part 4 is long enough to allow parallel movement when the cylinder part 2b of the movable holding member 2 is moved in a fitted state. good. In this embodiment, the dimension is 120 mm or less, which is a length that does not interfere with the doctor during anastomosis, and the dimension in the range of 60 mm or more necessary for smooth movement of the movable holding member 2. Set as appropriate.
[0025]
The main body 4 also has a function as a guide when the cylindrical portion 2b of the movable holding member 2 fitted inside moves in parallel. In particular, the diameter of the main body 4 is preferably in the range of 10 mm to 20 mm in order to achieve smooth parallel movement without rattling when the movable holding member 2 moves.
[0026]
The dimension (width dimension) of the fixed clamping member 1 along the longitudinal direction of the main body 4 is the distance between the two intestinal tracts when anastomosing the two intestinal tracts. Therefore, the width dimension of the fixed clamping member 1 is not unambiguous, and is set in the range of 5 mm to 20 mm according to the type of intestinal tract to be anastomosed. However, the width dimension of the fixed clamping member 1 should not necessarily be limited to the above range.
[0027]
Further, the length of the fixed clamping member 1 and the movable clamping member 2 (the length of the portion where the intestinal tract can be clamped) is set in a range of 40 mm to 80 mm according to the thickness of the intestinal tract to be clamped. However, the length dimension of each clamping member 1 and 2 should not necessarily be limited to the said range.
[0028]
The movable holding member 2 has a function of holding the intestinal tract together with the fixed holding member 1, and a holding surface 2 a is formed on a surface of the fixed holding member 1 that faces the holding surface 1 a. A cylindrical portion 2b that fits into the main body portion 4 is formed at a position where the length of the movable holding member 2 (the length of the portion that can hold the intestinal tract) can be secured. A projection (not shown) extending in the longitudinal direction of the cylinder portion 2b is formed on the outer surface of the cylinder portion 2b. The projection is engaged with a groove (not shown) formed on the inner surface of the main body portion 4 and slides inside. 3 is formed so that it can penetrate 3.
[0029]
A lever 2c is formed on the movable clamping member 2 so as to protrude to the opposite side of the cylindrical portion 2b when viewed from the clamping surface 2a. This lever 2c forms an arcuate groove for fitting the main body part 4 between the lever part 2b, and is operated by a doctor's hand during the operation to hold the intestinal tract with respect to the fixed holding member 1, Alternatively, the movable holding member 2 has a function of moving so as to open the held intestinal tract. For this reason, the lever 2c is set in a range of 10 mm to 40 mm in length of the protruding portion in consideration of operability.
[0030]
One end of each cylindrical portion 2b of the two movable clamping members 2 (the end opposite to the clamping surface 2a, ie, the left side of the cylindrical portion 2b of the left movable clamping member 2 in FIG. 1) A cap 5 is provided on the end portion and the right end portion of the cylinder portion 2b of the right side movable holding member 2. The cap 5 has a function of closing the cylindrical portion 2 b and locking the spring 3.
[0031]
The cap 5 is formed with a dimension that allows the convex portion 5a to be inserted into the cylindrical portion 2b, and a locking portion 5b that locks the end of the spring 3 is formed on the convex portion, and the outer shape is a cylindrical portion. It is formed with a dimension substantially equal to the outer shape of 2b. Therefore, when the cap 5 is attached to one end of the cylindrical portion 2b, they are integrated with the same outer shape.
[0032]
The spring 3 is stretched between the locking portions 5b of the cap 5 attached to the two movable holding members 2, and urges the movable holding member 2 so as to be pressed against the fixed holding member 1 side. The force of the spring 3 differs depending on the intestinal tract to be clamped and cannot be set uniquely. However, the range is about 500 g to 3000 g, and when the intestinal tract is the small intestine, the range of 1000 g to 2000 g is preferable.
[0033]
In FIG. 1, reference numeral 6 denotes a lever attached to both ends of the main body 4, which reinforces the end of the main body 4 provided with a groove 4 a in a ring shape and moves the movable holding member 2. This is for the doctor to operate by sandwiching the lever 6 and the lever 2c of the movable holding member 2. The lever 6 is formed to have a length equal to that of the lever 2c of the movable holding member 2.
[0034]
The material of each of the holding members 1, 2, cap 5 and lever 6 is not particularly limited, and a metal typified by stainless steel may be used, or a synthetic resin molded product may be used. In this embodiment, the part is obtained by injection molding with polycarbonate. In this way, it is possible to reduce the weight by forming the synthetic resin. The spring 3 is formed using stainless steel.
[0035]
Next, the procedure for constructing clip A will be described. First, the cylindrical part 2b of the movable clamping member 2 is inserted into the main body part 4 of the fixed clamping member 1 from both sides. At this time, the movable holding member 2 is fitted into the groove 4a of the main body portion 4, and the main body portion 4 is fitted into a groove formed between the cylindrical portion 2b of the movable holding member 2 and the lever 2c. Next, the end portion of the spring 3 is locked to the locking portion 5b of the cap 5, the spring 3 is inserted into the cylindrical portion 2b of the one movable holding member 2, and the cap 5 is inserted into the end portion of the cylindrical portion 2b. Fix it.
[0036]
The free end of the spring 3 is taken out by passing the cylindrical portion 2b of the other movable holding member 2 and the end portion is locked to the cap 5, and then the cap 5 is removed from the cylindrical portion 2b of the other movable holding member 2. Secure to the end. Thereafter, the clip A can be formed by attaching and fixing the lever 6 to both ends of the main body 4.
[0037]
In the clip A, when the intestinal tract is anastomosed, the doctor pulls the end of the intestinal tract and operates the lever 6 and the lever 2c on one side with one hand to separate the movable holding member 2 from the fixed holding member 1, After the end of the intestinal tract is inserted in between, the movable clamping member 2 is urged by the spring 3 to move toward the fixed clamping member 1 by removing the hand. It is possible to clamp the end. Similarly, the other pinching members 1 and 2 can pinch the end of the other intestinal tract.
[0038]
As described above, when the intestinal tract is clamped by the clip A, it is possible to maintain the end portions of the two intestinal tracts at substantially the same height and improve the workability at the time of anastomosis.
[0039]
Next, the structure of the clip B configured to be separable according to the present embodiment will be described with reference to FIG. In the figure, the same parts and parts having the same functions as those in the above-described reference example are designated by the same reference numerals, and the description thereof is omitted.
[0040]
The fixed clamping member 10 is configured as two members 11 and 12 divided substantially at the center. Main members 13 and 14 are formed integrally with the respective members 11 and 12. These main body portions 13 and 14 are configured to be fitted together so that they can be separated and separated from each other.
[0041]
That is, a hole 13a is formed in the surface of the main body 13 facing the other main body 14, and a locking portion 13b for locking the spring 3 is formed in the hole 13a. Further, a protrusion 14a that fits into the hole 13a is formed on the surface of the main body 14 that faces the other main body 13, and a locking portion 14b that locks the spring 3 is formed on the protrusion 14a. Yes.
[0042]
Therefore, by removing the protrusion 14a from the hole 13a, the fixed holding members 11 and 12 are separated with the movable holding member 2 attached to the main body portions 13 and 14, respectively, and the protrusion 14a is fitted into the hole 13a. By fixing, the fixed clamping members 11 and 12 can be combined.
[0043]
There is no particular limitation on the method of fixing both the fixing and holding members 11 and 12 by fitting the protrusions 14a into the holes 13a. For example, it is possible to fix a screw by penetrating the side wall of the hole 13a and tighten the screw, and form a hole penetrating a part of the hole 13a and the protrusion 14a. It is possible to fix both by inserting a pin through the top, and it is also possible to configure a bayonet mechanism to fix both. As described above, there are various mechanisms for combining and fixing the two fixed clamping members 11 and 12 together, and it is possible to select and use an optimum one from these.
[0044]
In each of the above-described embodiments, it is preferable that the sandwiching surface 2a of the movable sandwiching member 2 is slightly tilted so as to come into contact with the sandwiching surface 1a of the fixed sandwiching member 1 from the distal end side. This inclination angle is at most 10 degrees. By providing such an inclination, when the intestinal tract is sandwiched and urged between the sandwiching members 1 and 2, the movable sandwiching member 2 is warped by a reaction force, or the cylindrical body 2 b is moved to the main body 4. Even when it is inclined inside, it is possible to keep the parallelism degree of each clamping surface 1a, 2a in a favorable state.
[0045]
Moreover, it is preferable to form a groove along the longitudinal direction and a protrusion facing the groove on the holding surface 1a of the fixed holding member 1 and the holding surface 2a of the movable holding member 2. By forming such grooves and protrusions, it is possible to ensure occlusion when the intestinal tract is clamped, and it is possible to improve the clamping ability. Furthermore, it is possible to improve the clamping ability by making the shape of the grooves and protrusions corrugated.
[0046]
Further, since the operation levers 2c and 6 have a small protruding length from the main body 4 and there are no finger insertion portions like the intestinal forceps, it is possible to prevent entanglement of the thread that occurs during anastomosis. For this reason, it is not necessary to perform a special operation such as covering with a cloth, and workability can be improved.
[0047]
The synthetic resin clip A is preferably constructed so that each lever 2c, 6 is covered with a bag-like rubber and can be operated from above the bag. By configuring in this way, it is possible to reliably prevent the yarn from being entangled and to prevent the levers 2c and 6 from falling even if they break, thereby ensuring safety.
[0048]
【The invention's effect】
As described above in detail, in the clip according to the present invention, two clamping ports can be formed by the central fixed clamping member and the two movable clamping members arranged on both sides thereof and moving in parallel. When clamping the part, the intestinal tract can be clamped evenly in parallel to prevent the contents from coming out. In addition, the intestinal tract can be held at substantially the same height and can be brought close to each other. For this reason, the workability | operativity in the case of anastomosis can be improved.
[0049]
Also, the distance when clamping the two intestinal can be set depending on the size of the fixed clamping member. For this reason, the workability | operativity in the case of anastomosis can be improved.
[0050]
Moreover, since it is configured to be separated into clips each having one clamping opening, both sides of the affected area to be excised are held by the separated clips prior to excision surgery. Anastomoses can be performed by pulling them together. For this reason, it is not necessary to re-clamp the end of the intestinal tract, and workability can be improved.
[Brief description of the drawings]
FIG. 1 is a front view illustrating a configuration of a clip according to a reference example.
FIG. 2 is a diagram illustrating a main body including a fixed clamping member constituting a clip.
FIG. 3 is a view for explaining a movable holding member constituting a clip.
4 is a diagram illustrating a separable clip according to the present embodiment.
FIG. 5 is a diagram illustrating a conventional blood vessel clip.
FIG. 6 is a diagram illustrating a conventional blood vessel clip.
[Explanation of symbols]
A, B clip 1 fixed clamping member 1a, 2a clamping surface 2 moving clamping member 2b cylindrical part 2c, 6 lever 3 spring 4 body part 4a groove 5 cap
10 Fixed clamping member
11, 12 members
13, 14 Main unit
13a hole
13b, 14b Locking part
14a protrusion

Claims (1)

略中央で分割された2つの部材として構成されている中央の固定挟持部材とその両側に配置された2つの移動挟持部材とを有し、前記固定挟持部材と2つの移動挟持部材とが開閉方向に並列して2つの挟持口を形成し、且つ前記2つの移動挟持部材が前記固定挟持部材に対して平行移動可能に構成され、これらの移動挟持部材を平行移動させて2つの腸管口を独立して挟持し得るように構成すると共に、1つの挟持口を形成する腸管用クリップに分離し得るように構成したことを特徴とする腸管用クリップ。A central stationary clamping member which is configured as two members which are divided at a substantially central, has two mobile clamping members disposed on both sides thereof, and the fixed clamping member and the two mobile clamping member Two holding ports are formed in parallel in the opening and closing direction, and the two moving holding members are configured to be movable in parallel with respect to the fixed holding member. The intestinal tract clip is characterized in that it can be clamped independently and can be separated into an intestinal tract clip that forms one clamping port .
JP2000231266A 2000-07-31 2000-07-31 Intestinal clip Expired - Fee Related JP4319770B2 (en)

Priority Applications (1)

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JP2000231266A JP4319770B2 (en) 2000-07-31 2000-07-31 Intestinal clip

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