JPH10137248A - Suction biopsy tool - Google Patents

Suction biopsy tool

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Publication number
JPH10137248A
JPH10137248A JP30190796A JP30190796A JPH10137248A JP H10137248 A JPH10137248 A JP H10137248A JP 30190796 A JP30190796 A JP 30190796A JP 30190796 A JP30190796 A JP 30190796A JP H10137248 A JPH10137248 A JP H10137248A
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JP
Grant status
Application
Patent type
Prior art keywords
part
suction
member
side
cutter
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
Application number
JP30190796A
Other languages
Japanese (ja)
Inventor
Koichi Kawashima
Ko Kimura
Tsutomu Okada
Minoru Shinozuka
Takayuki Suzuki
勉 岡田
晃一 川島
耕 木村
実 篠塚
孝之 鈴木
Original Assignee
Olympus Optical Co Ltd
オリンパス光学工業株式会社
Priority date (The priority date 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 date listed.)
Filing date
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Abstract

PROBLEM TO BE SOLVED: To prevent an inner blade and an outer blade from being caught by each other and to improve the sliding of a cutter member 6 by making the cutter member a cylindrical shape and forming the inner blade at the end edge of a side hole formed by removing a part of the peripheral surface of the cutter member.
SOLUTION: The suction cock 20 is provided on an operation part 3 on the hand side of the insertion part 2 of this suction biopsy tool 1, a suction means 21 is connected to the suction cock 20 and a slider 12 freely slidable along an axial direction is provided on the operation part 3. Also, the cutter member 6 in the cylindrical shape provided with a communication hole 25 on a distal end wall 24 is arranged inside a tube body 4a and an operation wire 10 is fixed to the cutter member 6. The inner blade 14 is formed at the outer end edge on the tip side of the side hole 8 on the peripheral surface opposite to the eccentric direction of the operation wire 10 of the cutter member 6 and a projection part 22 is formed on a surface on the same side as the eccentric direction of the operation wire 10. In the meantime, an engaging groove 23 engageable with the projection part 22 is formed on the inner surface of the tube body 4a and a suction hole 7 and the side hole 8 are directed in the same direction to matched with each other in the state of engaging the projection part 22 and the engaging groove 23.
COPYRIGHT: (C)1998,JPO

Description

【発明の詳細な説明】 DETAILED DESCRIPTION OF THE INVENTION

【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。 The present invention relates to relates to suction raw Kengu that collected by suction-cut through an endoscope to a biological tissue (tissue samples).

【0002】 [0002]

【従来の技術】一般に、吸引生検具は、例えば実公昭5 In general, aspiration raw Kengu, for example real Publication 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。 2-47343 Patent As disclosed in Japanese has a sheath portion insertable flexible forceps channel of an endoscope, a tissue sucked into the sheath through the suction hole provided in the sheath portion so that the can be recovered by cutting by the cutter.

【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。 [0003] To obtain a tissue using such suction raw Kengu, first, by inserting the sheath portion into the forceps channel of the endoscope, the suction hole provided in the sheath body of the obtained tissue It is brought into contact. 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。 In this state, this time, the tissue through the suction hole by the action of negative pressure from the outside to the suction hole and the suction into the sheath portion is cut by the cutter provided with this suction tissue into the sheath portion. 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。 Then, by removing the sheath portion from the forceps channel, recovering the excised tissue specimen.

【0004】図7に吸引生検具の一例が示されている。 [0004] One example of a suction raw Kengu in FIG. 7 is shown.
図7の(a)(b)に示すように、この吸引生検具は、 As shown in (a) (b) of FIG. 7, the suction raw Kengu is
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 Sheath insertable tubular forceps channel of the endoscope 1
02を有している。 It has a 02. 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。 On the outer circumferential surface of the distal end side of the sheath portion 102 is provided with suction hole 109, the inner edge of the suction hole 109 outer cutter 113 is formed. 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。 Furthermore, the sheath portion 102 is disposed cutter members 106, operating wire 110 for advancing and retracting it in the sheath portion 102 is fixed to the cutter member 106. 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。 Furthermore, the inner cutter 114 is formed on the proximal end outer edge 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 [0005] Thus in order to obtain a tissue using a suction raw Kengu such configuration, by inserting the sheath 102 into the forceps channel of an endoscope, as shown in FIG. 7 (c), suction the hole 109 is brought into contact with the body of the tissue taken 50, the sheath portion 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 By exerting a negative pressure (suction force) to suction holes 109 through the 02, the sheath portion 10 of tissue through the suction holes 109
2内に吸引する。 It is sucked into the 2. 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。 In this state, in turn, by pulling operation of the operation wire 110 proximally, the cutter member 106 is slid proximally, the sucked tissue and the inner edge 114 of the cutter member 106 out of the suction hole 109 excised by a cutter 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 [SUMMARY OF THE INVENTION However, the conventional suction raw Kengu as shown in FIG. 7, since the inner cutter 114 is formed on the proximal end outer edge of the cutter member 106, the total length of the cutter member 106 than the length of the suction hole 109 short kite, when moving the cutter member 106 proximally, 7
の(d)に示すようにカッタ部材106が吸引孔109 Cutter member 106 as shown in (d) the suction holes 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。 Tilted up in passage, the inner cutter 14 is caught by the outer cutter 13, there is a possibility that more sliding of the cutter member 106 is disabled.

【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。 [0007] The present invention has been made in view of the above circumstances, and has as its object, without the inner cutter and the outer cutter caught, the sliding of the cutter member is a good aspiration raw Kengu It is 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。 Means for Solving the Problems] To solve the above problems, the present invention includes an insertion sheath portion into the forceps channel of an endoscope, a suction means provided on the proximal side of the sheath portion, said comprising a distal end treatment portion located at the distal end of the sheath portion, and the suction holes having an outer cutter provided in the distal end treatment portion, and a cutter member having a blade inner conforming to at least a portion of said suction holes the biological tissue is aspirated into the distal end treatment portion through the suction hole by the suction means, wherein a distal end treatment portion and a cutter member are relatively moved to cut the biological tissue until the proximal ablation tissue by said suction means in suction raw Kengu for transporting collected, which the cutter member is a cylindrical shape, to form a side hole by removing a part of the peripheral surface of the cutter member, to form an inner blade 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。 BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, with reference to the drawings, embodiments of the present invention will be described. 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。 1 and 2 show a first embodiment of the present invention. 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。 As shown in (a) of FIG. 1, the suction raw Kengu 1 of the present embodiment includes an elongated insertion portion 2 which can be inserted through the forceps channel of the endoscope, the operation section provided on the proximal side of the insertion portion 2 and a 3. 操作部3には吸引コック20が設けられ、吸引コック20 Suction cock 20 is provided in the operation portion 3, the suction cock 20
には吸引手段21が接続されている。 Suction means 21 is connected to. 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。 Further, the operation unit 3, slidable slider 12 is provided along its axial direction.

【0010】図1の(b)に示すように、挿入部2は、 [0010] As shown in the FIG. 1 (b), the insertion portion 2,
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。 Constituted the sheath portion 5 of the tubular, the distal end treatment portion 4 composed of a front end connected to the tubular body 4a of the sheath unit 5 by. 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。 The outer peripheral surface of the tube 4a is provided with suction holes 7, the inner edge of the suction hole 7 the outer cutter 13 is formed. 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。 The outer blade 13 is formed with a sharp slope of 60 ° from 20 °.

【0011】また、管体4a内には、その遠位端壁24 [0011] In addition, in the tube 4a, the distal end wall 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。 Cutter member 6 of a cylindrical shape having a communication hole 25 is arranged. 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。 Further, the cutter member 6, the operating wire 10 for advancing and retracting it in the tube 4a is fixed.
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。 Operating wire 10 is fixed eccentrically from the central axis of the tube 4a, the proximal side of the operation wire 10 is inserted through the sheath unit 5, it is fixed to the slider 12 provided to be slidable on the operating unit 3 there.

【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。 Further, the cutter member 6 has a side hole 8 to the peripheral surface opposite to the eccentric direction of the operation wire 10. 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。 The outer edge of the front end side of the side hole 8, with the sharp slope of 60 ° from 20 ° inner cutter 14 is formed. また、カッタ部材6 In addition, the cutter member 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。 Has a projecting portion 22 on the peripheral surface of the same side as the eccentric direction of the operation wire 10. 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。 On the other hand, on the inner surface of the tube 4a, projecting portion 22 engageable with the engaging groove 23 is formed. なお、 It should be noted that,
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。 In the state where the engagement between protrusion 22 and the engaging groove 23, a suction hole 7 and the side hole 8 is adapted to be matched to each other facing the same direction.

【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。 Further, the gap between the tube 4a and the cutter member 6 is set to 0.05mm or less dimensions than 0.01 mm, the cutter member 6 is enabled to slide smoothly without rattling ing. 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。 Also, tube 4a and the cutter member 6, stainless steel, titanium, or a metal such as brass, acrylonitrile butadiene styrene, and is formed of a resin such as 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。 [0014] On the other hand, the sheath unit 5 is formed in a three-layer structure in which sandwich the metal mesh 17 in close contact with the inner tube 15 and outer tube 16 has flexibility. 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。 Then, the sheath unit 5 has a high torsional rigidity by the metal net 17, thereby enabling transmission of rotational torque between the operation portion 3 and the distal end treatment portion 4. 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。 Incidentally, the inner tube 15 and outer tube 16, a resin having flexibility, such as polytetrafluoroethylene, copolymers of tetrafluoroethylene and hexafluoropropylene, and is formed of a material such as polyethylene.

【0015】また、内チューブ15は、操作ワイヤ10 [0015] The inner tube 15, the operating wire 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。 A wire insertion path 18 for inserting the, and forms a lumen structure having a conveyance path 19 for sucking conveying the resected tissue. なお、搬送路19の内径はワイヤ挿通路18 Incidentally, the inner diameter of the conveying path 19 wire insertion path 18
のそれよりも大きく設定されている。 It is set to be larger than that of the.

【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。 [0016] The conveying path 19 is communicated with the suction cock 20 of the operation portion 3, in the state in which the suction means 21 is connected to the cock 20, the transport path 19 and in the distal end treatment portion 4 (the tube of the sheath unit 5 body 4a) inside is adapted to be kept airtight. 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 Accordingly, the suction force by the suction means 21 is basically the sheath unit 5 (transport path 19) and the distal end treatment portion 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。 Through a (pipe 4a) and in the cutter member 6, it acts on the suction holes 7.

【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。 [0017] In order to obtain a tissue using a suction raw Kengu 1 configured as described above, firstly, to guide the tissue sampling site by inserting the insertion portion 2 into the forceps channel of the endoscope. 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、 By twisting the operation unit 3 rotates following the distal end treatment portion 4,
吸引孔7を組織採取部位に当接させる。 The suction holes 7 into contact with the tissue sampling site. 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。 Then, by moving the cutter member 6 to the distal end side by operating the operation wire 10, and aligned with the suction hole 7 and the side hole 8 to form an opening 9.

【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、 [0018] In this state, this time, by causing the suction holes 7 by operating the suction means 21 applies a negative pressure (suction force),
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。 Tissue through the opening 9 pulled into the interior of the cutter member 6. 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。 Next, in this state, by pulling operation of the operation wire 10 proximally, the cutter member 6 is slid proximally, Filter opening 9. 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。 At this time, protrusion 22 slides in engagement with the engaging groove 23, aspirated tissue and moved to a position where the cutter member 6 is shown in FIG. 2, the inner edge 14 of the cutter member 6 It is accommodated inside the cutter member 6 is cut by the outer cutter 13 of the suction holes 7 and.

【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。 [0019] Then, with the cutter member 6 is moved to the position shown in FIG. 2, the distal end treatment portion 4 is detached from the tissue sampling site, the air through the suction hole 7 and the hole 25 by the suction means 21 the sucking in the cutter member 6. 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。 Thus, excised tissue is washed away to the proximal side by the suction effect, it is conveyed to the cock 20 through the transport path 19. 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。 Incidentally, when the excised recovered necessary number of tissue by repeating the operation described above if necessary, be withdrawn from the body through the forceps channel of the endoscope insertion portion 2.

【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。 [0020] As described above, the suction raw Kengu 1 of this embodiment, the side holes 8 are formed in the cutter member 6 of a cylindrical shape, and the inner cutter 14 is formed in the outer edge of the side hole 8 because there can be a total length of the cutter member 6 formed long to perform ablation of tissue. 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。 Therefore, without the inner blade 14 and outer blade 13 it is caught, enabling smooth sliding of the cutter member 6.

【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。 [0021] The suction raw Kengu 1 of this embodiment, since the cutter member 6 is slid in a state in which the projecting portion 22 is engaged with the engaging groove 23, the cutter member 6 within the distal end treatment portion 4 never the rotation to the suction holes 7 and side hole 8 is deviated in the circumferential direction. 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。 Therefore, the opening 9 can be reliably formed, can be collected a sufficient amount of tissue.

【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。 [0022] The suction raw Kengu 1 of this embodiment, since the wire insertion path 18 and conveyance path 19 are independent, tissue during aspiration conveying resected tissue within operating wire 10 hooked or I of the sheath unit 5 together can be prevented from being jammed inside, it is possible to prevent the tissue in contact with the operation wire 10 and the tissue is damaged. また、ワイヤ挿通路18 Moreover, the wire insertion passage 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。 And due to that is independent and conveying path 19, since the cross-sectional area of ​​the wire insertion path 18 is smaller limited as compared with a case of sharing with the wire insertion path 18 and conveyance path 19, the operation wire 10 and the wire inserted gap between the passage 18 is reduced, the operating 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。 [0023] The suction raw Kengu 1 of the present embodiment, since the communication hole 25 is provided on the cutter member 6, resected tissue may stick to the inner surface of the distal end wall 24 of the cutter member 6, excised there is no possibility that the recovery of the organization 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。 [0024] Figures 3 and 4 show a second embodiment of the present invention. 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 Suction raw Kengu of this embodiment, the suction holes 7 formed in the side holes 8 and tube 4a formed on the cutter member 6
とが同様の楕円形状(もしくは凹状)に形成されている。 Bets are formed in the same elliptical shape (or concave). 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。 Further, the projecting portion 22 is fixed to the inner surface of the tube 4a, projecting portion 22 engageable with the engaging groove 23 on the outer peripheral surface of the cutter member 6 is formed along the axial direction. なお、 It should be noted that,
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。 Since other configurations are the same as the first embodiment, description thereof is omitted are denoted by the same reference numerals.

【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。 According to such a configuration, it is possible to obtain the same effects as in the first embodiment, as shown in FIG. 4, the opening 9 is narrowed while maintaining the oval shape (or concave) Therefore, damage to the resected tissue is reduced.
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。 That is, in the conventional configuration shown in FIG. 7, as shown in FIG. 7 (b), the suction holes for (opening) 109 is squeezed becomes semicircular, outer cutter 113 and the inner cutter 114 tissue is damaged tissue is compressed before it is cut by a, there is a problem that hinder pathological diagnosis after recovery.
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。 However, aspiration raw Kengu of this embodiment, since the opening 9 is narrowed while maintaining the oval shape, damage 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。 [0026] Figures 5 and 6 show a third embodiment of the present invention. 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。 In the suction raw Kengu of this embodiment, the side holes 8 formed in the cutter member 6 has a distal end surface 8a which is formed by being cut in the radial direction of the cutter member 6 and the proximal end face 8b ing. そして、遠位端面8a Then, the distal end face 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。 It 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. 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。 In other words, the distal end face 8a is a top portion of the V-shape is formed as the inner cutter 14 such that the projecting portion 26. 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。 Since the other structure is the same as the first embodiment, description thereof is omitted are denoted by the same reference numerals.

【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。 According to such a configuration, it is possible to obtain the same effects as in the first embodiment, as shown in FIG. 6, the cutter member 6 by operating the operating wire 10 proximally When it is slid gradually narrowed opening 9, tissue protruding part 26 is sandwiched between the outer blade 13 and the projecting portion 26 bites into the tissue. 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。 Thus, without being pushed out slipped inner blades 14 on tissue in the process of squeezing the opening 9, it is possible to cut a large tissue specimens. 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、 That is, in the conventional configuration shown in FIG. 7, in as shown in FIG. 7 (c), a state in which tissue was aspirated through the suction hole (opening) 109 (shown in broken lines), the cutter When suction hole (opening) 109 member 106 is moved it is gradually throttled,
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。 It slipped over the inner cutter 114 is a tissue surface is forced out of the opening 109 (shown by a solid line), there is a problem unresectable a sufficient amount of tissue. 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 However, aspiration raw Kengu of this embodiment, projecting portions 2 in the process of squeezing the opening 9
6が組織に食い込むため、そのような問題が生じない。 For 6 bites into the organization, such a problem does not occur.

【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。 [0028] Note that according to the art What has been described above, various configurations can be obtained as shown below. 1. 1. 内視鏡の鉗子チャンネルに挿通可能なシース部と、 A sheath portion which can be inserted into the forceps channel of the endoscope,
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。 A suction means provided in the sheath portion proximal side, a distal end treatment portion which is positioned in the sheath distal end, a suction hole having an outer cutter provided in the distal end treatment portion, at least a portion of said suction holes a cutter member having an inner cutter that matches has an operating means on the proximal side of the cutter member, the living tissue is aspirated into the distal end treatment portion through said suction hole by the suction means, the distal end treatment by the operation means the parts and the cutter member are relatively moved to cut the biological tissue, transported to the proximal tissue by said suction means, the suction raw Kengu recovering, the cutter member is a cylindrical shape, a portion of the peripheral surface suction raw Kengu, characterized by forming a side hole by removing.

【0029】2. [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、 An endoscope insertion sheath portion into the forceps channel of the suction means provided in the sheath portion proximal side, a distal end treatment portion which is positioned in the sheath distal end, an outer provided in the distal end treatment portion a suction hole having a blade, a cutter member having a blade inner conforming to at least a portion of the suction hole has an operating means on the proximal side of the cutter member, the distal end treatment portion through said suction hole by the suction means the biological tissue was aspirated, by relatively moving the cutter member and the distal end treatment portion by the operation means excised biological tissue,
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。 Conveying tissue by the suction means to the proximal side, the suction raw Kengu recovering suction raw Kengu the blade surface of the inner blade and having a recess.

【0030】3. [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。 The cutter member is a cylindrical shape, to form a side hole by removing a part of the peripheral surface, the second term the recess, characterized in that it is formed by the side holes and elliptical suction students Kengu described. 4. 4. 内視鏡の鉗子チャンネルに挿通可能なシース部と、 A sheath portion which can be inserted into the forceps channel of the endoscope,
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。 A suction means provided in the sheath portion proximal side, a distal end treatment portion which is positioned in the sheath distal end, a suction hole having an outer cutter provided in the distal end treatment portion, at least a portion of said suction holes a cutter member having an inner cutter that matches has an operating means on the proximal side of the cutter member, the living tissue is aspirated into the distal end treatment portion through said suction hole by the suction means, the distal end treatment by the operation means the parts and the cutter member are relatively moved to cut the living tissue, the conveying tissue by the suction means to the proximal side, the suction raw Kengu recovering, and wherein the cutting surface of the inner cutter has a convex portion suction students Kengu to.

【0031】5. [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。 The cutter member is a cylindrical shape, to form a side hole by removing a part of the peripheral surface, wherein the convex portion is formed on at least one end of the distal or proximal of the side hole suction raw Kengu according to paragraph 4. 6. 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。 By tilting with respect to the central axis of at least one of the distal or proximal of the side hole, the suction raw Kengu according to paragraph 4, characterized in that the formation of the convex portion in a V-shape. 7. 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。 Suction raw Kengu according to any of paragraphs 1 to paragraph 6, characterized in that a engagement portion for regulating the respective rotation with said cutter member to said distal end treatment portion.

【0032】8. [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。 And the communication path of the operating unit provided in the sheath portion, any of paragraphs 1 to paragraph 7, characterized in that provided independent of the conveying path of the excised tissue provided in the sheath portion suction students Kengu described. 9. 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。 Suction raw Kengu according to any of paragraphs 1 to paragraph 8, characterized in that it has a 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, according to the present invention, the suction raw Kengu of the present invention is to provide an inner cutter and outer cutter is caught, the sliding of the cutter member is good.

【図面の簡単な説明】 BRIEF DESCRIPTION OF THE DRAWINGS

【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、 1 (a) is an overall view of a suction raw Kengu according to the first embodiment of the present invention, (b) is a side sectional view of the insert of the suction raw Kengu of (a), (c) is plan view around the suction holes of the suction raw Kengu of (a), (d) is a sectional view taken along the a-a line in (b),
(e)は(b)のBーB線に沿う断面図である。 (E) is a sectional view taken along the B - B line in (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。 2 is a side sectional view showing a usage state of the suction raw Kengu in FIG.

【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。 3 (a) is a side sectional view of the insert of the suction raw Kengu according to the second embodiment of the present invention, (b) is a sectional view taken along the C over C line (a), (c) is a perspective view of a cross-sectional view, (d) the cutter member along the D over D line in (a).

【図4】図3の吸引生検具の吸引孔付近の平面図である。 It is a plan view of the vicinity of the suction hole of the suction raw Kengu of FIG. 3. FIG.

【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、 5 (a) the third cross-sectional side view of the insert of the suction raw Kengu according to an embodiment of the of the present invention, (b) is a sectional view taken along the E over E line of (a), (c) is a cross sectional view taken along the F ° F line (a),
(d)はカッタ部材の斜視図である。 (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。 6 is a plan view of the vicinity of the suction hole of the suction raw Kengu in FIG.

【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。 7 (a) is a side sectional view of the insertion portion of the conventional suction raw Kengu, (b) is a plan view of the vicinity of the suction hole of the suction raw Kengu of (a), (c), is (a) side sectional view showing a state in which sucking the tissue by aspiration raw Kengu is a side sectional view showing a (d) shows a state in which moving the cutter member of the suction raw Kengu of (a).

【符号の説明】 DESCRIPTION OF SYMBOLS

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 1 ... suction raw Kengu 2 ... insertion portion 5 ... sheath portion 4 ... distal end treatment portion 6 ... cutter member 7 ... suction hole 8 ... side hole 13 ... outer cutter 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 ────────────────────────────────────────────────── ─── of the front page continued (72) inventor Ko Kimura, Shibuya-ku, Tokyo Hatagaya 2-chome No. 43 No. 2 Olympus optical industry Co., Ltd. in the (72) inventor Minoru Shinozuka, Shibuya-ku, Tokyo Hatagaya 2-chome # 43 No. 2 Olympus optical industry Co., Ltd. in

Claims (1)

    【特許請求の範囲】 [The claims]
  1. 【請求項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。 And 1. A endoscope insertion sheath portion into the forceps channel of the suction means provided on the proximal side of the sheath portion, and a distal end treatment portion located at the distal end of the sheath portion, said tip a suction hole having an outer edge which is provided to the treatment portion, wherein; and a cutter member having a blade inner matches at least a portion of the suction hole, the biological tissue on the distal end treatment portion through the suction hole by the suction means was aspirated and the said distal end treatment portion and the cutter member are relatively moved to cut the biological tissue, the aspiration raw Kengu for transporting recovered resected tissue until proximal by said suction means, said cutter member is a cylindrical shape There, suction raw Kengu to form a side hole by removing a part of the peripheral surface of the cutter member, characterized in that the formation of the inner blade edge of the side hole.
JP30190796A 1996-11-13 1996-11-13 Suction biopsy tool Pending JPH10137248A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007020868A (en) * 2005-07-15 2007-02-01 Olympus Medical Systems Corp Puncture needle for endoscope
JP2008100082A (en) * 2000-11-06 2008-05-01 Suros Surgical Systems Inc 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 the 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

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
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
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 the 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

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