JPH10137248A - Suction biopsy tool - Google Patents
Suction biopsy toolInfo
- Publication number
- JPH10137248A JPH10137248A JP8301907A JP30190796A JPH10137248A JP H10137248 A JPH10137248 A JP H10137248A JP 8301907 A JP8301907 A JP 8301907A JP 30190796 A JP30190796 A JP 30190796A JP H10137248 A JPH10137248 A JP H10137248A
- Authority
- JP
- Japan
- Prior art keywords
- suction
- cutter member
- hole
- tissue
- blade
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Surgical Instruments (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、経内視鏡的に生体
組織（組織標本）を吸引・切除して採取する吸引生検具
に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a suction biopsy tool for endoscopically aspirating and resecting a living tissue (tissue sample) for sampling.
【０００２】[0002]
【従来の技術】一般に、吸引生検具は、例えば実公昭５
２−４７３４３号公報に開示されているように、内視鏡
の鉗子チャンネルに挿入可能な可撓性のシース部を有
し、このシース部に設けられた吸引孔を通じてシース部
内に吸引した組織をカッタによって切除して回収できる
ようになっている。2. Description of the Related Art Generally, a suction biopsy device is, for example,
As disclosed in Japanese Patent Application Laid-Open No. 2-47343, a tissue having a flexible sheath portion that can be inserted into a forceps channel of an endoscope, and a tissue sucked into the sheath portion through a suction hole provided in the sheath portion is provided. It can be cut off by a cutter and collected.
【０００３】こうした吸引生検具を使用して組織を採取
するためには、まず、前記シース部を内視鏡の鉗子チャ
ンネルに挿入して、シース部に設けられた吸引孔を体内
の採取組織に当接させる。この状態で、今度は、体外か
ら吸引孔に陰圧を作用させることにより吸引孔を通じて
組織をシース部内に吸引し、この吸引した組織をシース
部内に設けられたカッタによって切除する。そして、シ
ース部を鉗子チャンネルから抜去することにより、切除
された組織片を回収する。In order to collect tissue using such a suction biopsy tool, first, the sheath is inserted into a forceps channel of an endoscope, and a suction hole provided in the sheath is inserted into the tissue to be collected. Contact. In this state, the tissue is sucked into the sheath through the suction hole by applying a negative pressure to the suction hole from outside the body, and the sucked tissue is cut off by the cutter provided in the sheath. Then, by removing the sheath from the forceps channel, the resected tissue piece is collected.
【０００４】図７に吸引生検具の一例が示されている。
図７の（ａ）（ｂ）に示すように、この吸引生検具は、
内視鏡の鉗子チャンネルに挿入可能な管状のシース部１
０２を有している。シース部１０２の先端側の外周面に
は吸引孔１０９が設けられており、吸引孔１０９の内側
縁部には外刃１１３が形成されている。また、シース部
１０２内にはカッタ部材１０６が配置されており、カッ
タ部材１０６にはこれをシース部１０２内で進退させる
ための操作ワイヤ１１０が固着されている。また、カッ
タ部材１０６の基端部外縁には内刃１１４が形成されて
いる。FIG. 7 shows an example of a suction biopsy tool.
As shown in FIGS. 7A and 7B, this suction biopsy device
Tubular sheath 1 insertable into forceps channel of endoscope
02. A suction hole 109 is provided on the outer peripheral surface on the distal end side of the sheath portion 102, and an outer blade 113 is formed on an inner edge of the suction hole 109. Further, a cutter member 106 is disposed in the sheath portion 102, and an operation wire 110 for moving the cutter member 106 forward and backward in the sheath portion 102 is fixed to the cutter member 106. An inner blade 114 is formed on the outer edge of the base end of the cutter member 106.
【０００５】このような構成の吸引生検具を用いて組織
を採取するためには、シース部１０２を内視鏡の鉗子チ
ャンネルに挿入して、図７の（ｃ）に示すように、吸引
孔１０９を体内の採取組織５０に当接させ、シース部１
０２内を通じて吸引孔１０９に陰圧（吸引力）を作用さ
せることで、吸引孔１０９を通じて組織をシース部１０
２内に吸引する。そして、この状態で、今度は、操作ワ
イヤ１１０を手元側に牽引操作することにより、カッタ
部材１０６を手元側に摺動させ、吸引した組織をカッタ
部材１０６の内刃１１４と吸引孔１０９の外刃１１３と
によって切除する。[0005] In order to collect tissue using the suction biopsy device having such a configuration, the sheath 102 is inserted into a forceps channel of an endoscope and suction is performed as shown in FIG. The hole 109 is brought into contact with the harvested tissue 50 in the body, and the sheath 1
By applying a negative pressure (suction force) to the suction hole 109 through the inside of the inside 02, the tissue is passed through the suction hole 109 and the sheath 10.
Suction into 2. Then, in this state, by pulling the operation wire 110 toward the hand side, the cutter member 106 is slid toward the hand side, and the sucked tissue is moved outside the inner blade 114 and the suction hole 109 of the cutter member 106. The cutting is performed with the blade 113.
【０００６】[0006]
【発明が解決しようとする課題】しかしながら、図７に
示すような従来の吸引生検具は、カッタ部材１０６の基
端部外縁に内刃１１４が形成されているため、カッタ部
材１０６の全長が吸引孔１０９の長さに比べて短かい
と、カッタ部材１０６を手元側に移動させる際に、図７
の（ｄ）に示すようにカッタ部材１０６が吸引孔１０９
を通過中に傾いて、内刃１４が外刃１３に引掛かり、カ
ッタ部材１０６のそれ以上の摺動が不能となる虞があ
る。However, in the conventional suction biopsy device as shown in FIG. 7, since the inner blade 114 is formed on the outer edge of the base end of the cutter member 106, the total length of the cutter member 106 is reduced. If the length is shorter than the length of the suction hole 109, when the cutter member 106 is moved to the hand side, FIG.
As shown in (d) of FIG.
, The inner blade 14 may be hooked on the outer blade 13 and the cutter member 106 may not be able to further slide.
【０００７】本発明は上記事情に着目してなされたもの
であり、その目的とするところは、内刃と外刃とが引掛
かることなく、カッタ部材の摺動が良好な吸引生検具を
提供することにある。SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object thereof is to provide a suction biopsy tool in which the inner member and the outer blade are not caught and the cutter member slides well. To provide.
【０００８】[0008]
【課題を解決するための手段】前記課題を解決するため
に、本発明は、内視鏡の鉗子チャンネルに挿通可能なシ
ース部と、前記シース部の手元側に設けられた吸引手段
と、前記シース部の遠位端に位置した先端処置部と、前
記先端処置部に設けられた外刃を有する吸引孔と、前記
吸引孔の少なくとも一部に合致する内刃を有するカッタ
部材とを具備し、前記吸引手段により前記吸引孔を通じ
て前記先端処置部内に生体組織を吸引し、前記先端処置
部と前記カッタ部材とを相対移動させて生体組織を切除
し、前記吸引手段により切除組織を手元側まで搬送回収
する吸引生検具において、前記カッタ部材が円筒形状で
あり、カッタ部材の周面の一部を除去することにより側
孔を形成し、この側孔の端縁に内刃を形成したものであ
る。In order to solve the above-mentioned problems, the present invention provides a sheath which can be inserted into a forceps channel of an endoscope, suction means provided on the proximal side of the sheath, A distal end treatment portion located at a distal end of the sheath portion; a suction hole having an outer blade provided in the distal end treatment portion; and a cutter member having an inner blade matching at least a part of the suction hole. The living tissue is sucked into the distal treatment section through the suction hole by the suction means, the living tissue is cut off by relatively moving the distal treatment section and the cutter member, and the cut tissue is moved to the near side by the suction means. In the suction biopsy tool to be transported and collected, the cutter member has a cylindrical shape, a side hole is formed by removing a part of a peripheral surface of the cutter member, and an inner blade is formed at an edge of the side hole. It is.
【０００９】[0009]
【発明の実施の形態】以下、図面を参照しながら、本発
明の実施形態について説明する。図１および図２は本発
明の第１の実施形態を示している。図１の（ａ）に示す
ように、本実施形態の吸引生検具１は、内視鏡の鉗子チ
ャンネルに挿通可能な細長い挿入部２と、 挿入部２の
手元側に設けられた操作部３とから構成されている。操
作部３には吸引コック２０が設けられ、吸引コック２０
には吸引手段２１が接続されている。また、操作部３に
は、その軸方向に沿って摺動自在なスライダ１２が設け
られている。Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 show a first embodiment of the present invention. As shown in FIG. 1A, an aspiration biopsy device 1 according to the present embodiment includes an elongated insertion portion 2 that can be inserted into a forceps channel of an endoscope, and an operation portion provided near the insertion portion 2. And 3. The operation unit 3 is provided with a suction cock 20.
Is connected to a suction means 21. The operation unit 3 is provided with a slider 12 that is slidable along the axial direction.
【００１０】図１の（ｂ）に示すように、挿入部２は、
管状のシース部５と、シース部５の先端に接続された管
体４ａからなる先端処置部４とによって構成される。管
体４ａの外周面には吸引孔７が設けられており、吸引孔
７の内側縁部には外刃１３が形成されている。なお、外
刃１３は、２０°から６０°の鋭角な傾斜をもって形成
されている。As shown in FIG. 1B, the insertion portion 2
It is constituted by a tubular sheath portion 5 and a distal treatment section 4 composed of a tube 4a connected to the distal end of the sheath portion 5. A suction hole 7 is provided on the outer peripheral surface of the tube 4a, and an outer blade 13 is formed on an inner edge of the suction hole 7. In addition, the outer blade 13 is formed with an acute angle of 20 ° to 60 °.
【００１１】また、管体４ａ内には、その遠位端壁２４
に連通孔２５を有する円筒形状のカッタ部材６が配置さ
れている。また、カッタ部材６には、これを管体４ａ内
で進退させるための操作ワイヤ１０が固着されている。
操作ワイヤ１０は、管体４ａの中心軸から偏心して固着
され、操作ワイヤ１０の手元側は、シース部５内を挿通
されて、 操作部３にスライド自在に設けられたスライ
ダ１２に固着されている。In the tube 4a, a distal end wall 24 is provided.
A cylindrical cutter member 6 having a communication hole 25 is disposed. An operation wire 10 for moving the cutter member 6 forward and backward in the tube 4a is fixed to the cutter member 6.
The operation wire 10 is fixed eccentrically from the central axis of the tube 4a, and the proximal side of the operation wire 10 is inserted through the sheath portion 5 and fixed to a slider 12 slidably provided on the operation portion 3. I have.
【００１２】また、カッタ部材６は操作ワイヤ１０の偏
心方向とは反対の周面に側孔８を有している。側孔８の
先端側の外端縁には、２０°から６０°の鋭角な斜面を
もって内刃１４が形成されている。また、カッタ部材６
は、操作ワイヤ１０の偏心方向と同じ側の周面に突設部
２２を有している。一方、管体４ａの内面には、突設部
２２と係合可能な係合溝２３が形成されている。なお、
突設部２２と係合溝２３とを係合させた状態では、吸引
孔７と側孔８とが同一の方向を向いて互いに合致し得る
ようになっている。Further, the cutter member 6 has a side hole 8 on the peripheral surface opposite to the eccentric direction of the operation wire 10. An inner edge 14 having an acute slope of 20 ° to 60 ° is formed at the outer edge of the side hole 8 on the distal end side. Also, the cutter member 6
Has a projecting portion 22 on the peripheral surface on the same side as the eccentric direction of the operation wire 10. On the other hand, an engagement groove 23 capable of engaging with the protruding portion 22 is formed on the inner surface of the tube 4a. In addition,
When the protruding portion 22 and the engaging groove 23 are engaged with each other, the suction holes 7 and the side holes 8 face in the same direction and can be aligned with each other.
【００１３】また、管体４ａとカッタ部材６との間の隙
間は０．０１ｍｍ以上０．０５ｍｍ以下の寸法に設定さ
れており、カッタ部材６がガタつくことなくスムーズに
摺動できるようになっている。また、管体４ａとカッタ
部材６は、ステンレス鋼、チタン、黄銅等の金属や、ア
クリロニトリル・ブタジエン・スチレン、ポリカーボネ
ート等の樹脂によって形成されている。The gap between the tube 4a and the cutter member 6 is set to a size of 0.01 mm or more and 0.05 mm or less, so that the cutter member 6 can slide smoothly without rattling. ing. The tube 4a and the cutter member 6 are made of a metal such as stainless steel, titanium, brass or the like, or a resin such as acrylonitrile / butadiene / styrene or polycarbonate.
【００１４】一方、シース部５は、内チューブ１５と外
チューブ１６とによって金属網１７を密着状態で挟み込
んだ３層構造を成しており、可撓性を有している。そし
て、シース部５は、前記金属網１７によって高い捻り剛
性を有し、操作部３と先端処置部４との間での回転トル
クの伝達を可能としている。なお、内チューブ１５と外
チューブ１６は、可撓性を持つ樹脂、例えばポリテトラ
フルオロエチレン、テトラフルオロエチレンとヘキサフ
ルオロプロピレンとの共重合体、ポリエチレン等の素材
によって形成されている。On the other hand, the sheath portion 5 has a three-layer structure in which a metal net 17 is sandwiched between the inner tube 15 and the outer tube 16 in a close contact state, and has flexibility. The sheath portion 5 has high torsional rigidity due to the metal net 17, and enables transmission of rotational torque between the operation portion 3 and the distal end treatment portion 4. The inner tube 15 and the outer tube 16 are made of a flexible resin, for example, a material such as polytetrafluoroethylene, a copolymer of tetrafluoroethylene and hexafluoropropylene, or polyethylene.
【００１５】また、内チューブ１５は、操作ワイヤ１０
を挿通するためのワイヤ挿通路１８と、切除組織を吸引
搬送するための搬送路１９とを有するルーメン構造をな
している。なお、搬送路１９の内径はワイヤ挿通路１８
のそれよりも大きく設定されている。The inner tube 15 is connected to the operation wire 10.
Has a lumen structure having a wire insertion passage 18 for inserting the tissue and a transport passage 19 for sucking and transporting the resected tissue. Note that the inner diameter of the transport path 19 is
Is set larger than that of.
【００１６】また、搬送路１９は操作部３の吸引コック
２０と連通しており、コック２０に吸引手段２１が接続
された状態では、シース部５の搬送路１９内および先端
処置部４（管体４ａ）内が気密に保たれるようになって
いる。したがって、吸引手段２１による吸引力は、基本
的には、シース部５（搬送路１９）内と先端処置部４
（管体４ａ）内およびカッタ部材６内とを通じて、吸引
孔７に作用する。The transfer path 19 is in communication with the suction cock 20 of the operation unit 3. When the suction means 21 is connected to the cock 20, the inside of the transfer path 19 of the sheath 5 and the distal treatment unit 4 (tube The inside of the body 4a) is kept airtight. Therefore, the suction force by the suction means 21 is basically between the inside of the sheath portion 5 (the transport path 19) and the distal treatment section 4.
It acts on the suction hole 7 through the inside of the (tube body 4a) and the inside of the cutter member 6.
【００１７】上記構成の吸引生検具１を用いて組織を採
取するためには、まず、挿入部２を内視鏡の鉗子チャン
ネルに挿入して組織採取部位に誘導する。そして、操作
部３を捻ることにより、先端処置部４を回転追従させ、
吸引孔７を組織採取部位に当接させる。次に、操作ワイ
ヤ１０を操作してカッタ部材６を先端側に移動させるこ
とにより、吸引孔７と側孔８とを位置合わせし、開口部
９を形成する。In order to collect tissue using the suction biopsy device 1 having the above configuration, first, the insertion section 2 is inserted into a forceps channel of an endoscope and guided to a tissue collection site. Then, by twisting the operation unit 3, the distal treatment unit 4 is made to follow the rotation,
The suction hole 7 is brought into contact with the tissue sampling site. Next, by operating the operation wire 10 and moving the cutter member 6 to the distal end side, the suction hole 7 and the side hole 8 are aligned, and the opening 9 is formed.
【００１８】この状態で、今度は、吸引手段２１を作動
させて吸引孔７に陰圧（吸引力）を作用させることで、
開口部９を通じて組織をカッタ部材６の内部に引き込
む。次に、この状態で、操作ワイヤ１０を手元側に牽引
操作することにより、カッタ部材６を手元側に摺動させ
て、開口部９を絞り込む。この時、突設部２２は係合溝
２３に係合して摺動し、吸引された組織は、カッタ部材
６が図２に示される位置まで移動されると、カッタ部材
６の内刃１４と吸引孔７の外刃１３とによって切除され
てカッタ部材６の内部に収納される。In this state, the suction means 21 is operated to apply a negative pressure (suction force) to the suction hole 7.
The tissue is drawn into the cutter member 6 through the opening 9. Next, in this state, the cutter member 6 is slid toward the hand side by pulling the operation wire 10 toward the hand side, and the opening 9 is narrowed. At this time, the protruding portion 22 slides by engaging with the engagement groove 23, and the sucked tissue is moved to the position shown in FIG. And is cut off by the outer blade 13 of the suction hole 7 and housed inside the cutter member 6.
【００１９】次に、カッタ部材６が図２に示された位置
に移動された状態で、先端処置部４を組織採取部位から
離脱させ、吸引手段２１により吸引孔７と連通孔２５と
を通じて空気をカッタ部材６内に吸引する。これによ
り、切除組織は、吸引作用によって手元側に押し流さ
れ、搬送路１９を通ってコック２０まで搬送される。な
お、必要に応じて以上の操作を繰り返して必要個数の組
織を切除回収したら、挿入部２を内視鏡の鉗子チャンネ
ルを通じて体外に抜去する。Next, with the cutter member 6 moved to the position shown in FIG. 2, the distal end treatment section 4 is detached from the tissue sampling site, and air is passed through the suction hole 7 and the communication hole 25 by the suction means 21. Is sucked into the cutter member 6. As a result, the resected tissue is flushed to the proximal side by the suction action, and is transported to the cock 20 through the transport path 19. When the required number of tissues has been cut and collected by repeating the above operation as necessary, the insertion section 2 is pulled out of the body through the forceps channel of the endoscope.
【００２０】以上説明したように、本実施形態の吸引生
検具１は、円筒形状のカッタ部材６に側孔８が形成さ
れ、この側孔８の外端縁に内刃１４が形成されているた
め、カッタ部材６の全長を長く形成して組織の切除を行
なうことができる。したがって、内刃１４と外刃１３と
が引掛かることがなく、カッタ部材６の滑らかな摺動が
可能となる。As described above, the suction biopsy device 1 of this embodiment has the side hole 8 formed on the cylindrical cutter member 6 and the inner blade 14 formed on the outer edge of the side hole 8. Therefore, the entire length of the cutter member 6 can be formed longer, and the tissue can be cut off. Therefore, the inner blade 14 and the outer blade 13 are not hooked, and the cutter member 6 can smoothly slide.
【００２１】また、本実施形態の吸引生検具１は、突設
部２２が係合溝２３に係合した状態でカッタ部材６がス
ライドするため、先端処置部４の内部でカッタ部材６が
回転して吸引孔７と側孔８とが周方向にずれてしまうこ
とがない。したがって、開口部９を確実に形成でき、充
分量の組織を採取することができる。In the suction biopsy device 1 of the present embodiment, the cutter member 6 slides in a state where the protruding portion 22 is engaged with the engagement groove 23, so that the cutter member 6 is The suction hole 7 and the side hole 8 do not shift in the circumferential direction due to rotation. Therefore, the opening 9 can be reliably formed, and a sufficient amount of tissue can be collected.
【００２２】また、本実施形態の吸引生検具１は、ワイ
ヤ挿通路１８と搬送路１９とが独立しているため、切除
組織の吸引搬送時に組織が操作ワイヤ１０に引掛かって
シース部５の内部に詰まってしまうことを防止できると
ともに、操作ワイヤ１０と組織とが接触して組織が損傷
してしまうことを防止できる。また、ワイヤ挿通路１８
と搬送路１９とを独立させたことに伴い、ワイヤ挿通路
１８の断面積が、ワイヤ挿通路１８と搬送路１９とを共
用する場合に比べて小さく制限されるため、操作ワイヤ
１０とワイヤ挿通路１８との間の隙間が小さくなり、操
作ワイヤ１０が座屈しにくくなる。Further, in the suction biopsy device 1 of this embodiment, since the wire insertion path 18 and the transfer path 19 are independent, the tissue is hooked on the operation wire 10 during suction and transfer of the resected tissue, and It is possible to prevent the inside from being clogged and prevent the tissue from being damaged due to the contact between the operation wire 10 and the tissue. Also, the wire insertion passage 18
And the transfer path 19 are made independent, the cross-sectional area of the wire insertion path 18 is limited to be smaller than when the wire insertion path 18 and the transfer path 19 are shared. The gap between the passage 18 and the passage 18 is reduced, and the operation wire 10 is less likely to buckle.
【００２３】また、本実施形態の吸引生検具１は、カッ
タ部材６に連通孔２５が設けられているため、切除組織
がカッタ部材６の遠位端壁２４の内面に貼り付いて、切
除組織の回収が不可能となる虞がない。Further, in the suction biopsy device 1 of the present embodiment, since the communication hole 25 is provided in the cutter member 6, the resected tissue adheres to the inner surface of the distal end wall 24 of the cutter member 6, and the resection is performed. There is no possibility that the collection of the tissue becomes impossible.
【００２４】図３および図４は本発明の第２の実施形態
を示している。本実施形態の吸引生検具は、カッタ部材
６に形成された側孔８と管体４ａに形成された吸引孔７
とが同様の楕円形状（もしくは凹状）に形成されてい
る。また、管体４ａの内面に突設部２２が固着されると
ともに、カッタ部材６の外周面に突設部２２と係合可能
な係合溝２３が軸方向に沿って形成されている。なお、
それ以外の構成は第１の実施形態と同一であるため、同
一の符号を付してその説明を省略する。FIGS. 3 and 4 show a second embodiment of the present invention. The suction biopsy device according to the present embodiment includes a side hole 8 formed in the cutter member 6 and a suction hole 7 formed in the tubular body 4a.
Are formed in the same elliptical shape (or concave shape). A protruding portion 22 is fixed to the inner surface of the tube body 4a, and an engaging groove 23 capable of engaging with the protruding portion 22 is formed on the outer peripheral surface of the cutter member 6 along the axial direction. In addition,
The other configuration is the same as that of the first embodiment, and thus the same reference numerals are given and the description is omitted.
【００２５】このような構成によれば、第１の実施形態
と同一の作用効果を得ることができるとともに、図４に
示すように、開口部９は楕円形状（もしくは凹状）を保
ちながら絞られるため、切除組織の損傷が少なくなる。
すなわち、図７に示された従来例の構成では、図７の
（ｂ）に示されるように、吸引孔（開口部）１０９が半
円形となって絞られるため、外刃１１３と内刃１１４と
によって組織が切除される前に組織が圧縮されて損傷
し、回収後の病理診断に支障を来すという問題がある。
しかしながら、本実施形態の吸引生検具は、開口部９が
楕円形状を保ちながら絞られるため、切除組織の損傷が
少なくなる。According to such a configuration, the same operation and effect as in the first embodiment can be obtained, and as shown in FIG. 4, the opening 9 is narrowed down while maintaining an elliptical shape (or a concave shape). Therefore, damage to the resected tissue is reduced.
That is, in the configuration of the conventional example shown in FIG. 7, as shown in FIG. 7B, the suction hole (opening) 109 is formed in a semicircular shape and narrowed, so that the outer blade 113 and the inner blade 114 are formed. Thus, there is a problem that the tissue is compressed and damaged before the tissue is excised, which hinders pathological diagnosis after collection.
However, in the suction biopsy device of the present embodiment, since the opening 9 is narrowed while maintaining the elliptical shape, damage to the resected tissue is reduced.
【００２６】図５および図６は本発明の第３の実施形態
を示している。本実施形態の吸引生検具において、カッ
タ部材６に形成された側孔８は、カッタ部材６の径方向
へ切り欠かれることによって形成された遠位端面８ａと
近位端面８ｂとを有している。そして、遠位端面８ａ
は、カッタ部材６の中心軸に対して傾斜されるように切
り欠かれることによってＶ字形に形成されている。つま
り、遠位端面８ａは、そのＶ字形の頂部が突設部２６と
なるような内刃１４として形成されている。なお、それ
以外の構成は第１の実施形態と同一であるため、同一の
符号を付してその説明を省略する。FIGS. 5 and 6 show a third embodiment of the present invention. In the suction biopsy device of the present embodiment, the side hole 8 formed in the cutter member 6 has a distal end surface 8a and a proximal end surface 8b formed by cutting out the cutter member 6 in the radial direction. ing. And the distal end face 8a
Is formed in a V-shape by being cut out so as to be inclined with respect to the central axis of the cutter member 6. In other words, the distal end surface 8a is formed as the inner blade 14 such that the V-shaped top portion becomes the protruding portion 26. Since the other configuration is the same as that of the first embodiment, the same reference numerals are given and the description is omitted.
【００２７】このような構成によれば、第１の実施形態
と同一の作用効果を得ることができるとともに、図６に
示されるように、操作ワイヤ１０を操作してカッタ部材
６を手元側に摺動させて開口部９を絞っていくと、組織
が外刃１３と突設部２６との間に挟まれて突設部２６が
組織に食い込む。したがって、開口部９を絞る過程で組
織が内刃１４上を滑って外部に押し出されることがな
く、大きな組織検体の切除が可能となる。すなわち、図
７に示された従来例の構成では、図７の（ｃ）に示され
るように、組織を吸引孔（開口部）１０９を通じて吸引
した状態（図中、破線で示す）で、カッタ部材１０６が
移動されて吸引孔（開口部）１０９が絞られていくと、
組織表面が内刃１１４上で滑って開口部１０９の外に押
し出され（図中、実線で示す）、十分量の組織を切除で
きないといった問題がある。しかしながら、本実施形態
の吸引生検具は、開口部９を絞っていく過程で突設部２
６が組織に食い込むため、そのような問題が生じない。According to such a configuration, the same operation and effect as in the first embodiment can be obtained, and as shown in FIG. 6, the operating member 10 is operated to move the cutter member 6 to the hand side. When the opening 9 is squeezed by sliding, the tissue is sandwiched between the outer blade 13 and the projecting portion 26, and the projecting portion 26 bites into the tissue. Therefore, the tissue does not slide on the inner blade 14 in the process of squeezing the opening 9 and is not pushed out, so that a large tissue specimen can be excised. That is, in the configuration of the conventional example shown in FIG. 7, as shown in FIG. 7C, the tissue is sucked through the suction hole (opening) 109 (indicated by a broken line in the drawing) and the cutter is cut. When the member 106 is moved and the suction hole (opening) 109 is narrowed,
There is a problem that the tissue surface slides on the inner blade 114 and is pushed out of the opening 109 (indicated by a solid line in the figure), so that a sufficient amount of tissue cannot be cut off. However, in the suction biopsy device of the present embodiment, the protrusion 2
Such a problem does not occur because 6 penetrates the tissue.
【００２８】なお、以上説明してきた技術内容によれ
ば、以下に示すような各種の構成が得られる。 １．内視鏡の鉗子チャンネルに挿通可能なシース部と、
前記シース部手元側に設けられた吸引手段と、前記シー
ス部遠位端に位置した先端処置部と、前記先端処置部に
設けられた外刃を有する吸引孔と、前記吸引孔の少なく
とも一部に合致する内刃を有するカッタ部材と、前記カ
ッタ部材の手元側に操作手段を有し、前記吸引手段によ
り前記吸引孔を通して前記先端処置部内に生体組織を吸
引し、前記操作手段により前記先端処置部と前記カッタ
部材を相対移動させて生体組織を切除し、前記吸引手段
により組織を手元側まで搬送、回収する吸引生検具にお
いて、前記カッタ部材が円筒形状であり、周面の一部を
除去することにより側孔を形成することを特徴とする吸
引生検具。According to the technical contents described above, the following various configurations can be obtained. 1. A sheath portion that can be inserted through the forceps channel of the endoscope,
Suction means provided on the proximal side of the sheath portion, a distal treatment section located at the distal end of the sheath section, a suction hole having an outer blade provided on the distal treatment section, and at least a part of the suction hole. A cutter member having an inner blade that conforms to the above, and operating means on the hand side of the cutter member, wherein the suction means sucks the living tissue into the distal treatment section through the suction hole, and the operating means treats the distal treatment. Part and the cutter member are relatively moved to excise the living tissue, and the suction means conveys the tissue to the proximal side, in a suction biopsy tool for collecting, the cutter member has a cylindrical shape, and a part of the peripheral surface is removed. A suction biopsy tool characterized in that a side hole is formed by removing the biopsy tool.
【００２９】２．内視鏡の鉗子チャンネルに挿通可能な
シース部と、前記シース部手元側に設けられた吸引手段
と、前記シース部遠位端に位置した先端処置部と、前記
先端処置部に設けられた外刃を有する吸引孔と、前記吸
引孔の少なくとも一部に合致する内刃を有するカッタ部
材と、前記カッタ部材の手元側に操作手段を有し、前記
吸引手段により前記吸引孔を通して前記先端処置部内に
生体組織を吸引し、前記操作手段により前記先端処置部
と前記カッタ部材を相対移動させて生体組織を切除し、
前記吸引手段により組織を手元側まで搬送、回収する吸
引生検具において、前記内刃の刃面が凹部を有すること
を特徴とする吸引生検具。2. A sheath portion that can be inserted into the forceps channel of the endoscope, a suction means provided on the proximal side of the sheath portion, a distal treatment section located at the distal end of the sheath section, and an outer treatment provided on the distal treatment section. A suction member having a blade, a cutter member having an inner blade coinciding with at least a part of the suction hole, and operating means on a hand side of the cutter member, wherein the suction means passes through the suction hole into the distal treatment section. The living tissue is sucked, and the distal end treatment section and the cutter member are relatively moved by the operating means to cut off the living tissue,
A suction biopsy tool for transporting and collecting tissue to a hand side by the suction means, wherein the blade surface of the inner blade has a concave portion.
【００３０】３．前記カッタ部材が円筒形状であり、周
面の一部を除去することにより側孔を形成し、前記凹部
が、前記側孔を楕円形状とすることにより形成されるこ
とを特徴とする第２項に記載の吸引生検具。 ４．内視鏡の鉗子チャンネルに挿通可能なシース部と、
前記シース部手元側に設けられた吸引手段と、前記シー
ス部遠位端に位置した先端処置部と、前記先端処置部に
設けられた外刃を有する吸引孔と、前記吸引孔の少なく
とも一部に合致する内刃を有するカッタ部材と、前記カ
ッタ部材の手元側に操作手段を有し、前記吸引手段によ
り前記吸引孔を通して前記先端処置部内に生体組織を吸
引し、前記操作手段により前記先端処置部と前記カッタ
部材を相対移動させて生体組織を切除し、前記吸引手段
により組織を手元側まで搬送、回収する吸引生検具にお
いて、前記内刃の刃面が凸部を有することを特徴とする
吸引生検具。3. 3. The cutter member according to claim 2, wherein the cutter member has a cylindrical shape, a side hole is formed by removing a part of a peripheral surface, and the concave portion is formed by making the side hole an elliptical shape. The suction biopsy device according to 1. 4. A sheath portion that can be inserted through the forceps channel of the endoscope,
Suction means provided on the proximal side of the sheath portion, a distal treatment section located at the distal end of the sheath section, a suction hole having an outer blade provided on the distal treatment section, and at least a part of the suction hole. A cutter member having an inner blade that conforms to the above, and operating means on the hand side of the cutter member, wherein the suction means sucks the living tissue into the distal treatment section through the suction hole, and the operating means treats the distal treatment. In the suction biopsy tool for relatively moving the part and the cutter member to excise the living tissue, transporting the tissue to the proximal side by the suction means, and collecting, the blade surface of the inner blade has a convex portion. Suction biopsy tool.
【００３１】５．前記カッタ部材が円筒形状であり、周
面の一部を除去することにより側孔を形成し、前記凸部
が前記側孔の遠位または近位の少なくとも一端に形成さ
れることを特徴とする第４項に記載の吸引生検具。 ６．前記側孔の遠位または近位の少なくとも一端を中心
軸に対して傾斜させることにより、前記凸部をＶ字状に
形成したことを特徴とする第４項に記載の吸引生検具。 ７．前記カッタ部材と前記先端処置部にそれぞれの回転
を規制する係合部を設けたことを特徴とする第１項ない
し第６項のいずれか１項に記載の吸引生検具。5. The cutter member has a cylindrical shape, a side hole is formed by removing a part of a peripheral surface, and the protrusion is formed at at least one end at a distal or proximal side of the side hole. A suction biopsy device according to claim 4. 6. The suction biopsy tool according to claim 4, wherein the convex portion is formed in a V-shape by inclining at least one end of the side hole at the distal or proximal side with respect to a central axis. 7. The suction biopsy tool according to any one of claims 1 to 6, wherein the cutter member and the distal end treatment section are provided with engagement portions for restricting respective rotations.
【００３２】８．前記シース部内に設けられた前記操作
手段の連通路と、前記シース部内に設けられた切除組織
の搬送路とを独立した設けたことを特徴とする第１項な
いし第７項のいずれか１項に記載の吸引生検具。 ９．前記カッタ部材の前後を連通する連通手段を有する
ことを特徴とする第１項ないし第８項のいずれか１項に
記載の吸引生検具。8. 8. The communication path for the operation means provided in the sheath portion and a transport path for resection tissue provided in the sheath portion provided independently of each other. The suction biopsy device according to 1. 9. The suction biopsy tool according to any one of claims 1 to 8, further comprising communication means for communicating the front and rear of the cutter member.
【００３３】[0033]
【発明の効果】以上説明したように、本発明の吸引生検
具は、内刃と外刃とが引掛かることなく、カッタ部材の
摺動が良好である。As described above, in the suction biopsy tool of the present invention, the cutter member slides well without the inner blade and the outer blade getting caught.
【図１】（ａ）は本発明の第１の実施形態に係る吸引生
検具の全体図、（ｂ）は（ａ）の吸引生検具の挿入部の
側断面図、（ｃ）は（ａ）の吸引生検具の吸引孔付近の
平面図、（ｄ）は（ｂ）のＡーＡ線に沿う断面図、
（ｅ）は（ｂ）のＢーＢ線に沿う断面図である。1A is an overall view of a suction biopsy device according to a first embodiment of the present invention, FIG. 1B is a side cross-sectional view of an insertion portion of the suction biopsy device of FIG. 1A, and FIG. (A) is a plan view of the vicinity of the suction hole of the suction biopsy device, (d) is a cross-sectional view taken along line AA of (b),
(E) is sectional drawing which follows the BB line | wire of (b).
【図２】図１の吸引生検具の使用状態を示す側断面図で
ある。FIG. 2 is a side sectional view showing a use state of the suction biopsy device of FIG. 1;
【図３】（ａ）は本発明の第２の実施形態に係る吸引生
検具の挿入部の側断面図、 （ｂ）は（ａ）のＣーＣ線
に沿う断面図、（ｃ）は（ａ）のＤーＤ線に沿う断面
図、（ｄ）はカッタ部材の斜視図である。3A is a sectional side view of an insertion portion of the suction biopsy device according to the second embodiment of the present invention, FIG. 3B is a sectional view taken along line CC of FIG. 3A, and FIG. FIG. 3A is a cross-sectional view taken along line DD in FIG. 3A, and FIG.
【図４】図３の吸引生検具の吸引孔付近の平面図であ
る。FIG. 4 is a plan view of the vicinity of a suction hole of the suction biopsy device of FIG. 3;
【図５】（ａ）は本発明の第３の実施形態に係る吸引生
検具の挿入部の側断面図、（ｂ）は（ａ）のＥーＥ線に
沿う断面図、（ｃ）は（ａ）のＦーＦ線に沿う断面図、
（ｄ）はカッタ部材の斜視図である。5A is a side sectional view of an insertion portion of the suction biopsy device according to the third embodiment of the present invention, FIG. 5B is a sectional view taken along line EE in FIG. 5A, and FIG. Is a cross-sectional view along the line FF in FIG.
(D) is a perspective view of the cutter member.
【図６】図５の吸引生検具の吸引孔付近の平面図であ
る。FIG. 6 is a plan view of the vicinity of a suction hole of the suction biopsy device of FIG. 5;
【図７】（ａ）は従来の吸引生検具の挿入部の側断面
図、（ｂ）は（ａ）の吸引生検具の吸引孔付近の平面
図、（ｃ）は（ａ）の吸引生検具によって組織を吸引し
た状態を示す側断面図、（ｄ）は（ａ）の吸引生検具の
カッタ部材を移動させた状態を示す側断面図である。7A is a side sectional view of an insertion portion of a conventional suction biopsy tool, FIG. 7B is a plan view of the vicinity of a suction hole of the suction biopsy tool of FIG. 7A, and FIG. 7C is a view of FIG. It is a sectional side view showing the state where the tissue was sucked by the suction biopsy tool, and (d) is a side cross sectional view showing the state where the cutter member of the suction biopsy tool in (a) was moved.
１…吸引生検具 ２…挿入部 ５…シース部 ４…先端処置部 ６…カッタ部材 ７…吸引孔 ８…側孔 １３…外刃 １４…内刃 ２１…吸引手段 DESCRIPTION OF SYMBOLS 1 ... Suction biopsy tool 2 ... Insertion part 5 ... Sheath part 4 ... Tip treatment part 6 ... Cutter member 7 ... Suction hole 8 ... Side hole 13 ... Outer blade 14 ... Inner blade 21 ... Suction means
───────────────────────────────────────────────────── フロントページの続き (72)発明者 木村 耕 東京都渋谷区幡ヶ谷２丁目43番２号 オリ ンパス光学工業株式会社内 (72)発明者 篠塚 実 東京都渋谷区幡ヶ谷２丁目43番２号 オリ ンパス光学工業株式会社内 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Kou Kimura 2-43-2 Hatagaya, Shibuya-ku, Tokyo Inside Olympus Optical Industrial Co., Ltd. (72) Minoru Shinozuka 2-43-2 Hatagaya, Shibuya-ku, Tokyo Olympus Optical Co., Ltd.
Claims (1)
ース部と、前記シース部の手元側に設けられた吸引手段
と、前記シース部の遠位端に位置した先端処置部と、前
記先端処置部に設けられた外刃を有する吸引孔と、前記
吸引孔の少なくとも一部に合致する内刃を有するカッタ
部材とを具備し、前記吸引手段により前記吸引孔を通じ
て前記先端処置部内に生体組織を吸引し、前記先端処置
部と前記カッタ部材とを相対移動させて生体組織を切除
し、前記吸引手段により切除組織を手元側まで搬送回収
する吸引生検具において、 前記カッタ部材が円筒形状であり、カッタ部材の周面の
一部を除去することにより側孔を形成し、この側孔の端
縁に内刃を形成したことを特徴とする吸引生検具。A sheath portion that can be inserted into a forceps channel of an endoscope; suction means provided on a proximal side of the sheath portion; a distal treatment section located at a distal end of the sheath portion; A suction hole having an outer blade provided in the treatment section, and a cutter member having an inner blade matching at least a part of the suction hole, wherein a living tissue is inserted into the distal treatment section through the suction hole by the suction means. In the suction biopsy tool for relatively removing the living tissue by relatively moving the distal treatment section and the cutter member and transporting and collecting the cut tissue to the hand side by the suction means, the cutter member has a cylindrical shape. A suction biopsy tool characterized in that a side hole is formed by removing a part of a peripheral surface of a cutter member, and an inner blade is formed at an edge of the side hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8301907A JPH10137248A (en) | 1996-11-13 | 1996-11-13 | Suction biopsy tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8301907A JPH10137248A (en) | 1996-11-13 | 1996-11-13 | Suction biopsy tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH10137248A true JPH10137248A (en) | 1998-05-26 |
Family
ID=17902556
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8301907A Pending JPH10137248A (en) | 1996-11-13 | 1996-11-13 | Suction biopsy tool |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH10137248A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001104314A (en) * | 1999-10-07 | 2001-04-17 | Asahi Optical Co Ltd | Tissue gathering device for endoscope |
| JP2002017738A (en) * | 2000-07-06 | 2002-01-22 | Olympus Optical Co Ltd | Excision instrument for endoscope |
| JP2004519279A (en) * | 2000-11-06 | 2004-07-02 | スルーズ サージカル システムズ、インク | Biological tissue inspection device |
| JP2005103140A (en) * | 2003-10-01 | 2005-04-21 | Olympus Corp | Insertion aid for treatment of large intestine whole layer resection, and medical instrument system thereof |
| JP2005525192A (en) * | 2002-05-14 | 2005-08-25 | スピレーション インコーポレイテッド | Apparatus and method for excising and removing selected biological tissue from a site within a patient |
| JP2007020868A (en) * | 2005-07-15 | 2007-02-01 | Olympus Medical Systems Corp | Puncture needle for endoscope |
| JP2008504915A (en) * | 2004-07-09 | 2008-02-21 | ソニオン・ロスキレ・アクティーゼルスカブ | Transport device for biopsy device |
| JP2012148104A (en) * | 2000-09-24 | 2012-08-09 | Medtronic Inc | Endoscopic shaver |
| JP2015128498A (en) * | 2014-01-07 | 2015-07-16 | 藤井精工株式会社 | Surgical delivery device |
| JP2017196188A (en) * | 2016-04-27 | 2017-11-02 | 株式会社ナノ・グレインズ | Tissue sampling tool |
| WO2022177098A1 (en) * | 2021-02-17 | 2022-08-25 | (주)스코프로 | Overtube |
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| JP2001104314A (en) * | 1999-10-07 | 2001-04-17 | Asahi Optical Co Ltd | Tissue gathering device for endoscope |
| JP2002017738A (en) * | 2000-07-06 | 2002-01-22 | Olympus Optical Co Ltd | Excision instrument for endoscope |
| JP2012148104A (en) * | 2000-09-24 | 2012-08-09 | Medtronic Inc | Endoscopic shaver |
| JP2008100082A (en) * | 2000-11-06 | 2008-05-01 | Suros Surgical Systems Inc | Biopsy device |
| JP2004519279A (en) * | 2000-11-06 | 2004-07-02 | スルーズ サージカル システムズ、インク | Biological tissue inspection device |
| JP4659014B2 (en) * | 2000-11-06 | 2011-03-30 | スルーズ サージカル システムズ、インク | Biological tissue cutting device |
| JP2005525192A (en) * | 2002-05-14 | 2005-08-25 | スピレーション インコーポレイテッド | Apparatus and method for excising and removing selected biological tissue from a site within a patient |
| JP2005103140A (en) * | 2003-10-01 | 2005-04-21 | Olympus Corp | Insertion aid for treatment of large intestine whole layer resection, and medical instrument system thereof |
| JP2008504915A (en) * | 2004-07-09 | 2008-02-21 | ソニオン・ロスキレ・アクティーゼルスカブ | Transport device for biopsy device |
| JP4814229B2 (en) * | 2004-07-09 | 2011-11-16 | バード ペリフェラル ヴァスキュラー インコーポレイテッド | Transport device for biopsy device |
| JP2007020868A (en) * | 2005-07-15 | 2007-02-01 | Olympus Medical Systems Corp | Puncture needle for endoscope |
| US8282575B2 (en) | 2005-07-15 | 2012-10-09 | Olympus Medical Systems Corp. | Endoscopic puncture needle and method of acquiring tissue from a target region by using the endoscopic puncture needle |
| JP2015128498A (en) * | 2014-01-07 | 2015-07-16 | 藤井精工株式会社 | Surgical delivery device |
| JP2017196188A (en) * | 2016-04-27 | 2017-11-02 | 株式会社ナノ・グレインズ | Tissue sampling tool |
| US11229423B2 (en) | 2016-04-27 | 2022-01-25 | nano grains Co., Ltd. | Tissue collecting instrument |
| WO2022177098A1 (en) * | 2021-02-17 | 2022-08-25 | (주)스코프로 | Overtube |
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