JPH10137250A - Suction biopsy tool - Google Patents
Suction biopsy toolInfo
- Publication number
- JPH10137250A JPH10137250A JP8295132A JP29513296A JPH10137250A JP H10137250 A JPH10137250 A JP H10137250A JP 8295132 A JP8295132 A JP 8295132A JP 29513296 A JP29513296 A JP 29513296A JP H10137250 A JPH10137250 A JP H10137250A
- Authority
- JP
- Japan
- Prior art keywords
- suction
- cutter member
- tissue
- distal
- section
- 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.)
- Granted
Links
Landscapes
- Surgical Instruments (AREA)
- Endoscopes (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
組織を吸引、切除して組織標本を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 device for endoscopically aspirating and resecting a living tissue to obtain a tissue specimen.
【０００２】[0002]
【従来の技術】一般に、体内の生体組織を採取する吸引
生検具として、例えば米国特許第４，６５１，７５３号
に開示されている構成のものがある。この吸引生検具に
は、図８に示すように内視鏡の鉗子チャンネルに挿入さ
れる可撓性のシース部ａが設けられている。このシース
部ａの先端部には先端処置部ｂが配置されている。この
先端処置部ｂには吸引孔ｃが設けられている。2. Description of the Related Art In general, there is a suction biopsy device for sampling a living tissue in a body, for example, a device disclosed in US Pat. No. 4,651,753. As shown in FIG. 8, the suction biopsy device is provided with a flexible sheath portion a to be inserted into a forceps channel of an endoscope. A distal treatment section b is disposed at the distal end of the sheath section a. The distal treatment section b is provided with a suction hole c.
【０００３】また、シース部ａの先端処置部ｂ内には生
体組織を切除するカッタ部材ｄが軸方向に移動可能に配
設されている。さらに、先端処置部ｂにおける吸引孔ｃ
よりも先端側には生体組織収納部ｅが設けられている。[0003] A cutter member d for resection of a living tissue is disposed in the distal treatment section b of the sheath section a so as to be movable in the axial direction. Further, a suction hole c in the distal treatment section b
A living tissue storage section e is provided on the distal end side.
【０００４】そして、吸引生検具の使用時には内視鏡の
鉗子チャンネルを通して可撓性のシース部ａが患者の体
内に挿入される。続いて、シース部ａの先端処置部ｂに
設けられた吸引孔ｃを体内の生体組織の採取部位に当接
させる。その後、体外からシース部ａの内部に陰圧をか
けて吸引孔ｃに採取部位の生体組織を吸引した状態で、
シース部ａの先端処置部ｂ内のカッタ部材ｄを手元側か
ら先端側に移動する動作によって生体組織を切除する。
このとき切除された生体組織の組織片は先端処置部ｂの
生体組織収納部ｅの内部に収納される。さらに、以上の
操作を複数回繰り返すことにより、複数個の生体組織を
採取できるようになっている。[0004] When the suction biopsy device is used, a flexible sheath portion a is inserted into a patient through a forceps channel of an endoscope. Subsequently, the suction hole c provided in the distal end treatment portion b of the sheath portion a is brought into contact with a portion of a living body tissue in the body. Thereafter, a negative pressure was applied to the inside of the sheath portion a from outside the body, and the living tissue at the collection site was sucked into the suction hole c,
The living tissue is excised by moving the cutter member d in the distal treatment section b of the sheath section a from the proximal side to the distal side.
At this time, the resected tissue piece of the living tissue is stored in the living tissue storage section e of the distal treatment section b. Further, by repeating the above operation a plurality of times, a plurality of living tissues can be collected.
【０００５】[0005]
【発明が解決しようとする課題】上記従来構成のものに
あっては吸引孔ｃの先端側に設けられた生体組織収納部
ｅは硬質な先端処置部ｂと一体に形成されている。その
ため、この生体組織収納部ｅは可撓性を持たないため
に、シース部ａの先端部には配設される先端処置部ｂに
よる湾曲不可能な硬質部の全長が長くなるので、内視鏡
の鉗子チャンネルへの挿通時に湾曲部分を通過すること
が困難となる問題がある。In the above-mentioned conventional structure, the living tissue storage section e provided on the distal end side of the suction hole c is formed integrally with the hard distal treatment section b. For this reason, since the living tissue storage section e does not have flexibility, the entire length of the rigid portion that cannot be bent by the distal treatment section b disposed at the distal end of the sheath section a becomes longer, so that the endoscopic There is a problem that it is difficult to pass through the curved portion when the mirror is inserted into the forceps channel.
【０００６】また、先端処置部ｂの全長を長くすること
が難しいので、生体組織収納部８の長さが制限される問
題がある。そのため、内視鏡の鉗子チャンネルを通して
体内に挿入される１回の吸引生検具の挿入作業時に採取
可能な生体組織の数量も少なくなる問題がある。Further, since it is difficult to increase the total length of the distal treatment section b, there is a problem that the length of the living tissue storage section 8 is limited. Therefore, there is a problem that the number of living tissues that can be collected at the time of one insertion operation of the suction biopsy tool inserted into the body through the forceps channel of the endoscope decreases.
【０００７】本発明は、上記事情に着目してなされたも
ので、その目的は、切除された多数の生体組織を収納す
ることができるとともに、内視鏡の鉗子チャンネル内へ
の挿通性が良好である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 has as its object to accommodate a large number of resected living tissues and to have good endoscope insertion into a forceps channel. Another object of the present invention is to provide a suction biopsy tool.
【０００８】[0008]
【課題を解決するための手段】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、このシース部の先端
部に配置され、吸引孔を備えた先端処置部と、前記シー
ス部の手元側に設けられ、前記シース部内を通して前記
吸引孔に吸引力を作用させて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する吸引手段と、前記先端
処置部内に前記シース部の軸方向に沿って移動可能に配
設されたカッタ部材と、前記先端処置部における前記吸
引孔よりも先端側に配置され、前記カッタ部材の移動に
より切除された生体組織を収納する可撓性を有する切除
組織収納部とを具備したことを特徴とする吸引生検具で
ある。上記構成により、生体組織の採取時には吸引手段
からの吸引力によってシース部の先端処置部の吸引孔に
生体組織を引き込む。この状態で、カッタ部材を軸方向
に沿って先端側に移動操作させることにより、カッタ部
材と吸引孔との間のせん断により生体組織の切除を行
う。ここで切除された生体組織は吸引孔よりも先端側の
切除組織収納部に収納する。さらに、複数の生体組織を
切除、収納した後にシース部を内視鏡の鉗子チャンネル
より抜去して、生体組織を回収する。そして、内視鏡の
鉗子チャンネルへの挿通時に湾曲部分を通過する際に切
除組織収納部の可撓性によって湾曲部分の形状に応じて
切除組織収納部を変形させるようにしたものである。According to the present invention, there is provided a sheath portion which can be inserted into a forceps channel of an endoscope, a distal treatment portion provided at a distal end of the sheath portion and provided with a suction hole, A suction means provided on the hand side, for applying a suction force to the suction hole through the sheath portion to suction the living tissue into the distal treatment portion through the suction hole, and an axial direction of the sheath portion in the distal treatment portion. A cutter member movably disposed along the distal end portion of the distal end treatment section with respect to the distal end side of the suction hole, and having a flexibility to store a living tissue cut by the movement of the cutter member; A suction biopsy tool comprising a storage part. With the above configuration, at the time of collecting the living tissue, the living tissue is drawn into the suction hole of the distal treatment section of the sheath portion by the suction force from the suction means. In this state, the living tissue is excised by shearing between the cutter member and the suction hole by moving the cutter member to the distal end side along the axial direction. The resected living tissue is stored in the resected tissue storage portion on the distal end side of the suction hole. Further, after a plurality of living tissues are cut and stored, the sheath is removed from the forceps channel of the endoscope, and the living tissues are collected. Then, when the endoscope passes through the curved portion when inserted into the forceps channel, the flexibility of the resected tissue storage portion causes the resected tissue storage portion to be deformed according to the shape of the curved portion.
【０００９】[0009]
【発明の実施の形態】以下、本発明の第１の実施の形態
を図１（Ａ）〜（Ｃ）乃至図４を参照して説明する。図
１（Ａ）は本実施の形態の吸引生検具１全体の概略構成
を示すものである。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIGS. 1 (A) to 1 (C) to FIG. FIG. 1A shows a schematic configuration of the entire suction biopsy device 1 of the present embodiment.
【００１０】この吸引生検具１には、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、この挿入部２の
基端部に連結された手元側の操作部３とが設けられてい
る。さらに、挿入部２には可撓性を有するシース部４
と、このシース部４の先端側に配設された先端処置部５
とが設けられている。The aspiration biopsy device 1 is provided with an elongated insertion portion 2 that can be inserted into a forceps channel of an endoscope, and an operation portion 3 on a hand side connected to a base end of the insertion portion 2. ing. Further, the insertion portion 2 has a flexible sheath portion 4.
And a distal treatment section 5 disposed on the distal side of the sheath section 4.
Are provided.
【００１１】ここで、シース部４は、ステンレス鋼線の
密巻きコイル等により構成されている。そして、このシ
ース部４は可撓性と共に高い捻り剛性を有し、操作部３
と先端処置部５との間で回転トルクの伝達が可能になっ
ている。Here, the sheath portion 4 is formed of a tightly wound coil of stainless steel wire or the like. The sheath portion 4 has flexibility and high torsional rigidity.
The rotation torque can be transmitted between the end treatment unit 5 and the end treatment unit 5.
【００１２】また、先端処置部５には図１（Ｂ）に示す
ように円筒体からなる処置部本体６が設けられている。
この処置部本体６の周面には図１（Ｃ）に示すように吸
引孔７が形成されている。この吸引孔７の周縁部位には
例えば２０°から６０°程度の鋭角な外刃８が形成され
ている。さらに、処置部本体６の手元側端部にはシース
部４の内部に配設された吸引チューブ９の先端部が連結
されている。As shown in FIG. 1B, the distal treatment section 5 is provided with a treatment section main body 6 formed of a cylindrical body.
A suction hole 7 is formed on the peripheral surface of the treatment section main body 6 as shown in FIG. An outer edge 8 having an acute angle of, for example, about 20 ° to 60 ° is formed at a peripheral portion of the suction hole 7. Further, a distal end portion of a suction tube 9 disposed inside the sheath portion 4 is connected to a proximal end portion of the treatment section main body 6.
【００１３】また、処置部本体６の内部にはカッタ部材
１０が軸方向に移動可能に配設されている。このカッタ
部材１０にはベース円板１０ａと、このベース円板１０
ａの先端面から前方に向けて突設された例えば２０°か
ら６０°程度の鋭角なリング状の内刃１０ｂとが設けら
れている。ここで、ベース円板１０ａにはカッタ部材１
０の前後を連通する連通孔１１が軸方向に延設されてい
る。A cutter member 10 is provided inside the treatment section main body 6 so as to be movable in the axial direction. The cutter member 10 includes a base disk 10a and the base disk 10a.
and a ring-shaped inner blade 10b having an acute angle of, for example, about 20 ° to 60 ° and protruding forward from the front end face of the “a”. Here, the cutter member 1 is attached to the base disk 10a.
A communication hole 11 that communicates the front and rear of 0 extends in the axial direction.
【００１４】また、カッタ部材１０には操作ワイヤ（操
作手段）１２の先端部が固着されている。この操作ワイ
ヤ１２の基端部は操作部３側に延出されている。この操
作部３の基端部にはシース部４の軸方向に摺動自在なス
ライダ１３が設けられている。このスライダ１３には操
作ワイヤ１２の基端部が固着されている。そして、この
スライダ１３によって操作ワイヤ１２を介してカッタ部
材１０がシース部４の軸方向に押し引き操作されるよう
になっている。An end of an operation wire (operation means) 12 is fixed to the cutter member 10. The proximal end of the operation wire 12 extends to the operation section 3 side. A slider 13 slidable in the axial direction of the sheath portion 4 is provided at a base end of the operation portion 3. The proximal end of the operation wire 12 is fixed to the slider 13. The cutter member 10 is pushed and pulled in the axial direction of the sheath portion 4 by the slider 13 via the operation wire 12.
【００１５】また、先端処置部５の処置部本体６とカッ
タ部材１０との間の隙間はカッタ部材１０がガタなく、
スムーズに軸方向に摺動可能な値、例えば０．０１ｍｍ
以上、０．０５ｍｍ以下程度に設定されている。なお、
先端処置部５の処置部本体６及びカッタ部材１０は、例
えばステンレス鋼、チタン、黄銅等の金属材料や、アク
リロニトリル・ブタジエン・スチレン、ポリカーボネー
ト等の樹脂材料により形成されている。The gap between the treatment section main body 6 of the distal treatment section 5 and the cutter member 10 is such that the cutter member 10 has no play.
A value that allows smooth sliding in the axial direction, for example, 0.01 mm
As described above, the distance is set to about 0.05 mm or less. In addition,
The treatment section main body 6 and the cutter member 10 of the distal treatment section 5 are made of, for example, a metal material such as stainless steel, titanium, or brass, or a resin material such as acrylonitrile, butadiene, styrene, or polycarbonate.
【００１６】また、処置部本体６の先端部にはカッタ部
材１０の前進移動により切除された生体組織を収納する
円筒状の切除組織収納部１４が連結されている。この切
除組織収納部１４は可撓性を有する樹脂材料、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−
ヘキサフルオロプロピレン共重合体、ポリエチレン等か
ら形成されている。The distal end of the treatment section main body 6 is connected to a cylindrical cut tissue storage section 14 for storing a living tissue cut by the forward movement of the cutter member 10. The cut tissue storage section 14 is made of a flexible resin material, for example, polytetrafluoroethylene, tetrafluoroethylene-
It is formed from a hexafluoropropylene copolymer, polyethylene or the like.
【００１７】また、切除組織収納部１４の内周面には切
除組織収納部１４と先端処置部５の処置部本体６との間
の接続部に切除組織収納部１４の後端部開口面を開閉可
能に閉塞する可撓性を有するフラップ１５の外端部が固
着されている。このフラップ１５の内端部は常時は図２
に示すように切除組織収納部１４の後端部開口面を略閉
塞する状態で保持されている。そして、カッタ部材１０
の前進移動時には図３に示すようにこのカッタ部材１０
によってフラップ１５が切除組織収納部１４内側に押し
倒される状態に弾性変形し、切除組織収納部１４の後端
部開口面が開口されるようになっている。このとき弾性
変形したフラップ１５は図４に示すようにカッタ部材１
０が後方側に引き戻される動作にともないこのフラップ
１５の弾力によって切除組織収納部１４の後端部開口面
を閉塞する元の状態に復帰するようになっている。さら
に、切除組織収納部１４の先端部にはこの切除組織収納
部１４の先端開口部を閉塞するキャップ１６が取り外し
可能に設けられている。In addition, the inner peripheral surface of the resected tissue storage section 14 has a rear end opening surface at the connection between the resected tissue storage section 14 and the treatment section main body 6 of the distal treatment section 5. An outer end portion of a flexible flap 15 that is openably closed is fixed. The inner end of the flap 15 is normally
As shown in FIG. 7, the rear end opening surface of the resected tissue storage section 14 is held in a state of being substantially closed. And the cutter member 10
When the cutter member 10 moves forward, as shown in FIG.
As a result, the flap 15 is elastically deformed so as to be pushed down to the inside of the resected tissue storage section 14, and the rear end opening surface of the resected tissue storage section 14 is opened. At this time, the elastically deformed flap 15 is attached to the cutter member 1 as shown in FIG.
In accordance with the operation of retracting 0 toward the rear side, the elasticity of the flap 15 returns to the state in which the rear end opening surface of the resected tissue storage section 14 is closed. Further, a cap 16 for closing the opening at the distal end of the cut tissue storage section 14 is detachably provided at the tip of the cut tissue storage section 14.
【００１８】また、操作部３には吸引コック１７が突設
されている。この吸引コック１７の内端部には吸引チュ
ーブ９の基端部が連結されている。さらに、吸引コック
１７の外端部には吸引手段１８が接続されており、吸引
チューブ９からカッタ部材１０のベース円板１０ａの連
通孔１１を経由して先端処置部５までは気密が保たれて
いる。A suction cock 17 protrudes from the operation unit 3. The proximal end of the suction tube 9 is connected to the inner end of the suction cock 17. Further, a suction means 18 is connected to the outer end of the suction cock 17, and airtightness is maintained from the suction tube 9 to the distal treatment section 5 through the communication hole 11 of the base disk 10 a of the cutter member 10. ing.
【００１９】次に、上記構成の作用について説明する。
本実施の形態の吸引生検具１の使用時には予め吸引生検
具１の先端処置部５内のカッタ部材１０が図２に示すよ
うに吸引孔７の後方位置に移動された状態にセットされ
る。この状態で、吸引生検具１の挿入部２を内視鏡の鉗
子チャンネルを通して体腔内に挿入し、患者の体内の生
体組織の採取部位に誘導する。このとき、操作部３を捻
ることにより、先端処置部５を回転追従させ、吸引孔７
を生体組織の採取部位に当接させる。Next, the operation of the above configuration will be described.
When the suction biopsy tool 1 according to the present embodiment is used, the cutter member 10 in the distal end treatment section 5 of the suction biopsy tool 1 is set in a state in which it has been moved to a position behind the suction hole 7 as shown in FIG. You. In this state, the insertion section 2 of the suction biopsy tool 1 is inserted into the body cavity through the forceps channel of the endoscope, and is guided to a biological tissue collection site in the patient's body. At this time, by twisting the operation unit 3, the distal end treatment unit 5 is rotated and followed, and the suction hole 7 is rotated.
Is brought into contact with a living tissue collection site.
【００２０】その後、吸引手段１８を作動させて吸引チ
ューブ９の内腔からカッタ部材１０の連通孔１１を通し
て先端処置部５の内部を陰圧にすると、図２に示すよう
に生体組織Ｈが吸引孔７を通して先端処置部５の内部に
引き込まれる。Thereafter, when the suction means 18 is operated to apply a negative pressure to the inside of the distal end treatment section 5 from the lumen of the suction tube 9 through the communication hole 11 of the cutter member 10, the living tissue H is sucked as shown in FIG. It is drawn into the distal treatment section 5 through the hole 7.
【００２１】さらに、陰圧を保持したままスライダ１３
を図１（Ａ）中で左側に押し出し操作して操作ワイヤ１
２を介してカッタ部材１０を先端側に摺動させる。この
とき、吸引孔７から先端処置部５内に引き込まれている
生体組織Ｈは、カッタ部材１０の内刃１０ｂと吸引孔７
の外刃８との間でせん断により切除される。Further, while maintaining the negative pressure, the slider 13
Is pushed out to the left in FIG.
The cutter member 10 is slid to the distal end side via 2. At this time, the living tissue H that has been drawn into the distal end treatment section 5 from the suction hole 7 is separated from the inner blade 10 b of the cutter member 10 by the suction hole 7.
Is cut off by shearing with the outer blade 8.
【００２２】切除後、続いてカッタ部材１０をさらに先
端側に移動する。このときのカッタ部材１０の前進移動
にともない図３に示すように切除組織収納部１４のフラ
ップ１５がこのカッタ部材１０によって切除組織収納部
１４内側に押し倒される状態に弾性変形し、切除組織収
納部１４の後端部開口面が開口される。そのため、切除
された生体組織片Ｈ1 はカッタ部材１０によって切除組
織収納部１４内に押し込まれる。After the cutting, the cutter member 10 is further moved to the distal end side. With the forward movement of the cutter member 10 at this time, as shown in FIG. 3, the flap 15 of the resected tissue storage portion 14 is elastically deformed by the cutter member 10 so as to be pushed down into the resected tissue storage portion 14. 14 is opened at the rear end opening surface. Therefore, the cut living tissue piece H 1 is pushed into the cut tissue storage section 14 by the cutter member 10.
【００２３】その後、カッタ部材１０が後方側に引き戻
される動作にともないフラップ１５は図４に示すように
このフラップ１５の弾力によって切除組織収納部１４の
後端部開口面を閉塞する元の状態に復帰する。このと
き、切除組織収納部１４内に収納された生体組織片Ｈ1
は図４に示すようにフラップ１５に係止されるので、切
除組織収納部１４内に留まり、先端処置部５の吸引孔７
側には移動しない。これにより、１回目の生体組織Ｈ1
の採取操作が終了する。Thereafter, as the cutter member 10 is pulled back to the rear side, the flap 15 returns to the original state of closing the rear end opening surface of the resected tissue storage section 14 by the elasticity of the flap 15 as shown in FIG. Return. At this time, the living tissue piece H 1 stored in the resected tissue storage section 14 is stored.
4 is retained by the flap 15 as shown in FIG.
Do not move to the side. Thereby, the first biological tissue H 1
Collection operation ends.
【００２４】また、上記生体組織片Ｈ1 の採取操作は必
要個数の生体組織片Ｈ1 が採取できるまで繰り返され
る。さらに、必要個数の生体組織片Ｈ1 の採取が終了し
た後、吸引生検具１を内視鏡の鉗子チャンネルより抜去
した状態で、キャップ１６を取り外し、複数の生体組織
片Ｈ1 を回収する。Further, the collection operation of the living body tissue pieces H 1 is repeated until harvesting is living tissue piece H 1 of the required number. Furthermore, after the collection of the required number of biological tissue pieces H 1 has been completed, while removed from the forceps channel of the endoscope suction raw Kengu 1, remove the cap 16, to recover the plurality of biological tissue pieces H 1 .
【００２５】そこで、上記構成のものにあっては次の効
果を奏する。すなわち、先端処置部５の先端部の切除組
織収納部１４に可撓性を持たせたので、内視鏡の鉗子チ
ャンネルへの吸引生検具１の挿入部２の挿通時に湾曲部
分を通過する際に切除組織収納部１４の可撓性によって
湾曲部分の形状に応じて切除組織収納部１４を変形させ
ることができる。そのため、内視鏡の鉗子チャンネルへ
の吸引生検具１の挿入部２の挿通性が向上する。Therefore, the above configuration has the following effects. That is, since the resected tissue storage section 14 at the distal end of the distal treatment section 5 is made flexible, it passes through the curved portion when the insertion section 2 of the biopsy tool 1 is inserted into the forceps channel of the endoscope. At this time, the flexibility of the resected tissue storage section 14 allows the resected tissue storage section 14 to be deformed according to the shape of the curved portion. Therefore, the penetration of the insertion portion 2 of the suction biopsy tool 1 into the forceps channel of the endoscope is improved.
【００２６】また、切除組織収納部１４の全長を長くす
ることができるので、採取することができる生体組織片
Ｈ1 の量を増加させることができる。そのため、吸引生
検具１の挿入部２を内視鏡の鉗子チャンネルへ挿入する
１回の挿入操作で多数の生体組織片Ｈ1 を効率良く採取
することができるので、生体組織片Ｈ1 の採取作業の作
業性を高めることができる。Further, since it is possible to increase the overall length of the excised tissue receiving portion 14, it is possible to increase the amount of biological tissue pieces H 1 which can be collected. Therefore, it is possible to efficiently collect a large number of biological tissue pieces H 1 in the insertion portion 2 endoscope single insertion operation of inserting the forceps channel of the suction raw Kengu 1, the biological tissue piece H 1 Workability of the sampling operation can be improved.
【００２７】さらに、切除組織収納部１４の内周面にこ
の切除組織収納部１４の後端部開口面を開閉可能に閉塞
する可撓性を有するフラップ１５を設けたので、切除組
織収納部１４に収納した生体組織片Ｈ1 が先端処置部５
の吸引孔７側に移動することをフラップ１５により防止
することができる。そのため、連続的な生体組織片Ｈ1
の採取に支障を来さないという効果がある。Further, a flexible flap 15 for closing the opening of the rear end portion of the resected tissue storage portion 14 so that it can be opened and closed is provided on the inner peripheral surface of the resected tissue storage portion 14. biological tissue pieces H 1 housed in the distal end treatment portion 5
Can be prevented by the flap 15 from moving toward the suction hole 7 side. Therefore, a continuous biological tissue piece H 1
This has the effect of not hindering the harvesting of the vine.
【００２８】また、図５（Ａ）〜（Ｄ）乃至図７は本発
明の第２の実施の形態を示すものである。なお、図５
（Ａ）〜（Ｄ）乃至図７中で、第１の実施の形態（図１
（Ａ）〜（Ｃ）乃至図４参照）と同一の部分には同一の
符号を付し、その説明は省略する。FIGS. 5A to 5D to 7 show a second embodiment of the present invention. FIG.
(A) to (D) to FIG. 7 show a first embodiment (FIG. 1).
(A) to (C) to FIG. 4) are denoted by the same reference numerals, and description thereof will be omitted.
【００２９】本実施の形態では、切除組織収納部１４の
後端部開口面を開閉可能に閉塞する第１の実施の形態の
フラップ１１の代わりに処置部本体６の内周面に矩形断
面形状のガイド部材２１を突設するとともに、カッタ部
材１０の構成を次の通り変更したものである。In the present embodiment, instead of the flap 11 of the first embodiment for opening and closing the rear end opening surface of the resected tissue storage section 14, a rectangular cross section is formed on the inner peripheral surface of the treatment section main body 6. And the configuration of the cutter member 10 is changed as follows.
【００３０】すなわち、ガイド部材２１には図５（Ｂ）
〜（Ｄ）に示すように処置部本体６の内周面に接合され
る略弓形断面の接合部２２と、この接合部２２の中央部
位に内方向に向けて突設された矩形断面形状の突設部２
３とが設けられている。さらに、突設部２３の内端面
（図５（Ａ）中で下端面）には図５（Ａ）に示すように
後端部側（手元側）から先端部側に向かうにしたがって
この突設部２３の高さ（下向きの突出量）が徐々に大き
くなるテーパ面２３ａが形成されている。That is, as shown in FIG.
As shown in (D), a joint portion 22 having a substantially arcuate cross section joined to the inner peripheral surface of the treatment section main body 6 and a rectangular cross section projecting inward at a central portion of the joint portion 22 are provided. Protruding part 2
3 are provided. Further, as shown in FIG. 5 (A), the projecting portion 23 has an inner end surface (lower end surface in FIG. 5 (A)) that projects from the rear end side (hand side) to the front end side. A tapered surface 23a in which the height of the portion 23 (the amount of downward projection) gradually increases is formed.
【００３１】さらに、本実施の形態のカッタ部材１０の
ベース円板１０ａにはガイド部材２１と係合する係合溝
２４が形成されている。この係合溝２４の溝深さは突設
部２３における図５（Ａ）中で左端部の最大突出部分と
対応する深さに設定されている。そして、カッタ部材１
０が図５（Ａ），（Ｄ）に示すように手元側に引っ張ら
れた状態で保持されている場合には係合溝２４を通して
カッタ部材１０の前後が連通し、カッタ部材１０が先端
側に押し出し操作された場合にはカッタ部材１０の係合
溝２４全体がガイド部材２１の突設部２３によって殆ど
閉塞されるようになっている。Further, an engagement groove 24 for engaging with the guide member 21 is formed in the base disk 10a of the cutter member 10 according to the present embodiment. The depth of the engaging groove 24 is set to a depth corresponding to the maximum protruding portion at the left end in the protruding portion 23 in FIG. And the cutter member 1
5A and 5D, the front and rear sides of the cutter member 10 communicate with each other through the engagement groove 24 so that the cutter member 10 is moved toward the distal end side. When the pushing operation is performed, the entire engagement groove 24 of the cutter member 10 is almost completely closed by the projecting portion 23 of the guide member 21.
【００３２】次に、上記構成の作用について説明する。
本実施の形態の吸引生検具１の使用時には予め吸引生検
具１の先端処置部５内のカッタ部材１０が図５（Ａ）に
示すように吸引孔７の後方位置に移動された状態にセッ
トされる。この状態で、吸引生検具１の挿入部２を内視
鏡の鉗子チャンネルを通して体腔内に挿入し、患者の体
内の生体組織の採取部位に誘導する。このとき、操作部
３を捻ることにより、先端処置部５を回転追従させ、吸
引孔７を生体組織の採取部位に当接させる。Next, the operation of the above configuration will be described.
When using the suction biopsy tool 1 of the present embodiment, the cutter member 10 in the distal end treatment section 5 of the suction biopsy tool 1 has been moved to a position behind the suction hole 7 as shown in FIG. Is set to In this state, the insertion section 2 of the suction biopsy tool 1 is inserted into the body cavity through the forceps channel of the endoscope, and is guided to a biological tissue collection site in the patient's body. At this time, by twisting the operation unit 3, the distal end treatment unit 5 is caused to follow the rotation, and the suction hole 7 is brought into contact with the biological tissue collection site.
【００３３】その後、吸引手段１８を作動させて吸引チ
ューブ９の内腔からカッタ部材１０の係合溝２４を通し
て先端処置部５の内部を陰圧にすると、生体組織Ｈが吸
引孔７を通して先端処置部５の内部に引き込まれる（図
２参照）。Thereafter, when the suction means 18 is operated to apply a negative pressure to the inside of the distal treatment section 5 from the inner cavity of the suction tube 9 through the engaging groove 24 of the cutter member 10, the living tissue H is subjected to the distal treatment through the suction hole 7. It is drawn inside the part 5 (see FIG. 2).
【００３４】さらに、陰圧を保持したままスライダ１３
を押し出し操作して操作ワイヤ１２を介してカッタ部材
１０を先端側に摺動させる。このとき、吸引孔７から先
端処置部５内に引き込まれている生体組織Ｈは、カッタ
部材１０の内刃１０ｂと吸引孔７の外刃８との間でせん
断により切除される。Further, while maintaining the negative pressure, the slider 13
Is pushed out to slide the cutter member 10 to the distal end side via the operation wire 12. At this time, the living tissue H drawn into the distal treatment section 5 from the suction hole 7 is cut off by shearing between the inner blade 10b of the cutter member 10 and the outer blade 8 of the suction hole 7.
【００３５】切除後、続いてカッタ部材１０をさらに先
端側に移動する。このときのカッタ部材１０の前進移動
にともない図６に示すように切除された生体組織片Ｈ2
が切除組織収納部１４内に押し込まれる。After the excision, the cutter member 10 is further moved to the distal end side. Along with the forward movement of the cutter member 10 at this time, the cut biological tissue piece H 2 as shown in FIG.
Is pushed into the resected tissue storage section 14.
【００３６】その後、カッタ部材１０が後方側に引き戻
される。このとき、ガイド部材２１の突設部２３の高さ
（下向きの突出量）は先端側が高くなっていることによ
り、生体組織片Ｈ2 は突設部２３により係止されて切除
組織収納部１４内に留まり、カッタ部材１０から剥離さ
れる。Thereafter, the cutter member 10 is pulled back to the rear side. At this time, since the height of the projecting portion 23 of the guide member 21 (the amount of downward projection) is higher on the distal end side, the living tissue piece H 2 is locked by the projecting portion 23 and the resected tissue storage portion 14 is held. And is separated from the cutter member 10.
【００３７】さらに、切除組織収納部１４に収納された
生体組織片Ｈ2 は突設部２３により係止されるので、切
除組織収納部１４内に滞留し、先端処置部５の吸引孔７
側には移動しない。これにより、１回目の生体組織Ｈ2
の採取操作が終了する。Further, since the living tissue piece H 2 stored in the resected tissue storage section 14 is locked by the projecting portion 23, it stays in the resected tissue storage section 14, and the suction hole 7 of the distal end treatment section 5.
Do not move to the side. Thereby, the first biological tissue H 2
Collection operation ends.
【００３８】また、上記生体組織片Ｈ2 の採取操作は必
要個数の生体組織片Ｈ2 が採取できるまで繰り返され
る。さらに、必要個数の生体組織片Ｈ2 の採取が終了し
た後、吸引生検具１を内視鏡の鉗子チャンネルより抜去
した状態で、キャップ１６を取り外し、複数の生体組織
片Ｈ2 を回収する。Further, the collection operation of the living body tissue pieces H 2 are repeated until harvesting is living tissue piece of H 2 required number. Furthermore, after the collection of the required number of biological tissue piece H 2 is completed, while removed from the forceps channel of the endoscope suction raw Kengu 1, remove the cap 16, to recover the plurality of biological tissue piece H 2 .
【００３９】そこで、上記構成のものにあっても第１の
実施の形態と同様の効果があるとともに、これに加え
て、本実施の形態では特に、カッタ部材１０を先端処置
部５の手元側に復帰する際に切除された生体組織片Ｈ2
が突設部２３により強制的にカッタ部材１０から剥離さ
れ、切除組織収納部１４内で保持されるため、生体組織
片Ｈ2 がカッタ部材１０に貼り付くことがなく、次の生
体組織片Ｈ2 の採取作業に支障を来さない効果がある。Therefore, the above configuration has the same effect as that of the first embodiment, and in addition to this, in this embodiment, particularly, the cutter member 10 is attached to the distal side of the distal end treatment section 5. Biological tissue piece H 2 excised when returning to
There is peeled from forcibly cutter member 10 by the projection portion 23, to be held in resected tissue storage unit within 14, without biological tissue piece H 2 sticks to the cutter member 10, the following biological tissue piece H There is an effect that does not hinder the sampling work of 2 .
【００４０】なお、本発明は上記実施の形態に限定され
るものではなく、本発明の要旨を逸脱しない範囲で種々
変形実施できることは勿論である。次に、本出願の他の
特徴的な技術事項を下記の通り付記する。 記 （付記項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吸引孔と、前記先端処置部の遠
位端に設けられ、可撓性を有する切除組織収納部と、前
記先端処置部内に配置されたカッタ部材から構成され、
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、前記先端処置部と前記カッタ部
材の相対移動により生体組織を切除し、前記収納部に切
除組織を収納することを特徴とする吸引生検具。It should be noted that the present invention is not limited to the above-described embodiment, and it goes without saying that various modifications can be made without departing from the spirit of the present invention. Next, other characteristic technical matters of the present application will be additionally described as follows. (Additional Item 1) A sheath portion that can be inserted into a forceps channel of an endoscope, suction means provided on the proximal side of the sheath portion, a distal treatment portion located at a distal end of the sheath portion, and the distal treatment A suction hole provided in the section, a cut section provided in the distal end of the distal treatment section and having flexibility, and a cutter member disposed in the distal treatment section,
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 the relative movement of the distal treatment section and the cutter member, and the cut tissue is stored in the storage section. Suction biopsy tool.
【００４１】（付記項１の解決しようとする課題） し
かしながら、米国特許第４６５１７５３号公報に開示さ
れる構造では、図８に示すように組織収納部ｅが吸引孔
ｃの先端側に設けられ、かつ可撓性を持たないために、
湾曲不可能な硬質部の全長が長くなり、内視鏡への挿通
時に湾曲部分を通過することが困難となる。また、組織
収納部ｅの長さが制限され、内視鏡への一回の挿入にお
いて採取可能な組織の数量も少なくなるという問題点が
あった。(Problem to be Solved by Additional Item 1) However, in the structure disclosed in US Pat. No. 4,651,753, as shown in FIG. And because it is not flexible,
The entire length of the hard portion that cannot be bent becomes long, and it becomes difficult to pass through the bent portion when the hard portion is inserted into the endoscope. Further, there is a problem that the length of the tissue storage section e is limited, and the number of tissues that can be collected in one insertion into the endoscope is reduced.
【００４２】本発明は前記の問題に鑑みてなされたもの
で、多数の切除組織を収納する収納部を有し、かつ内視
鏡への挿通性が良好である吸引生検具を提供することを
目的とする。The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a suction biopsy tool having a storage portion for storing a large number of resected tissues and having good penetrability into an endoscope. With the goal.
【００４３】（付記項１の課題を解決するための手段お
よび作用） 本発明は吸引生検具において、組織収納部
を可撓性のある素材で構成したことを特徴とする。シー
ス部を内視鏡の鉗子チャンネルに挿入し、シース部手元
側に設けられた吸引手段により、シース部遠位端の先端
処置部に設けられた吸引孔に生体組織を引き込む。カッ
タ部材を先端側に移動し、吸引孔とカッタ部材とのせん
断により切除を行い、組織収納部に収納する。複数の組
織を切除、収納した後に吸引生検具を内視鏡より抜去し
て、組織を回収する。(Means and Actions for Solving the Problems in Supplementary Item 1) The present invention is characterized in that, in the suction biopsy device, the tissue storage section is made of a flexible material. The sheath is inserted into the forceps channel of the endoscope, and the living tissue is drawn into the suction hole provided in the distal treatment section at the distal end of the sheath by the suction means provided on the proximal side of the sheath. The cutter member is moved to the distal end side, cut off by shearing the suction hole and the cutter member, and stored in the tissue storage section. After a plurality of tissues are excised and stored, the suction biopsy tool is removed from the endoscope, and the tissues are collected.
【００４４】（付記項１の効果） 組織収納部が可撓性
を持つことにより、内視鏡の湾曲部分への挿通性が向上
する。また、組織収納部の全長を長くすることが可能な
ため、内視鏡への一回の挿入において多数の組織採取が
可能となる。(Effect of Additional Item 1) The flexibility of the tissue storage section improves the penetration of the endoscope into the curved portion. Further, since the total length of the tissue storage section can be increased, a large number of tissues can be collected by one insertion into the endoscope.
【００４５】（付記項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吸引孔と、前記先端
処置部の遠位端に設けられた切除組織収納部と、前記先
端処置部内にカッタ部材を有し、前記先端処置部と前記
カッタ部材の相対移動により生体組織を切除し、前記収
納部に切除組織を収納する吸引生検具において、前記先
端処置部の内面から中心軸方向に伸展する組織係止手段
を設けたことを特徴とする吸引生検具。(Additional Item 2) A sheath portion that can be inserted into a forceps channel of an endoscope, suction means provided on the proximal side of the sheath portion, a distal treatment portion located at a distal end of the sheath portion, A suction hole provided in the distal treatment section, a resected tissue storage section provided in a distal end of the distal treatment section, and a cutter member in the distal treatment section, and a relative position between the distal treatment section and the cutter member; In a suction biopsy device which cuts a living tissue by movement and stores the cut tissue in the storage section, a tissue locking means extending in a central axis direction from an inner surface of the distal treatment section is provided. Detector.
【００４６】（付記項３） 前記組織係止手段が弾性を
有することを特徴とする付記項２の吸引生検具。 （付記項４） 前記組織係止手段が硬性であることを特
徴とする付記項２の吸引生検具。(Appendix 3) The suction biopsy tool according to Appendix 2, wherein the tissue locking means has elasticity. (Additional Item 4) The suction biopsy device according to Additional Item 2, wherein the tissue locking means is rigid.
【００４７】（付記項５） 前記組織係止手段が前記カ
ッタ部に設けられた連通孔に係合し、前記組織係止手段
の高さは先端側が高く、手元側が低いことを特徴とする
付記項４の吸引生検具。(Additional Item 5) The additional feature is that the tissue locking means engages with a communication hole provided in the cutter portion, and the height of the tissue locking means is higher at the distal end side and lower at the hand side. Item 4. A suction biopsy device according to Item 4.
【００４８】（付記項６） 前記収納部が可撓性を有す
ることを特徴とする付記項２〜５の吸引生検具。 （付記項１〜６の従来技術） 本発明は、経内視鏡的に
生体組織を吸引、切除して組織標本を採取する吸引生検
具に関する。一般の吸引生検具で組織を採取するために
は、可撓性のシース部を内視鏡の鉗子チャンネルに挿入
し、先端部に設けられた吸引孔を体内の採取部位に当接
させて、体外から陰圧をかけて吸引孔に組織を吸引す
る。先端部内に設けられたカッタを手元側から先端側に
移動する動作によって組織を切除する。組織片は吸引孔
の先端側に設けられた組織収納部に収納可能である。以
上の操作により複数個の組織を採取する吸引生検具につ
いては米国特許第４６５１７５３号公報にて開示されて
いる。(Additional Item 6) The suction biopsy device according to Additional Items 2 to 5, wherein the storage section has flexibility. The present invention relates to a suction biopsy device for endoscopically aspirating and resecting a living tissue to collect a tissue specimen. In order to collect tissue with a general suction biopsy tool, a flexible sheath portion is inserted into a forceps channel of an endoscope, and a suction hole provided at a distal end portion is brought into contact with a collection site in a body. A negative pressure is applied from outside the body to suck the tissue into the suction hole. The tissue is excised by the operation of moving the cutter provided in the distal end from the proximal side to the distal side. The tissue piece can be stored in a tissue storage section provided on the distal end side of the suction hole. A suction biopsy device for collecting a plurality of tissues by the above operation is disclosed in U.S. Pat. No. 4,651,753.
【００４９】（付記項２〜６の解決しようとする課題）
しかしながら、米国特許第４６５１７５３号公報に開
示される構造では、収納部ｅに収納された切除組織が吸
引生検具の移動等により吸引孔ｃの位置まで戻ってしま
い、次の組織採取が不可能になる可能性がある。(Problems to be Solved in Additional Items 2 to 6)
However, in the structure disclosed in U.S. Pat. No. 4,651,753, the resected tissue stored in the storage portion e returns to the position of the suction hole c due to the movement of the suction biopsy tool or the like, and the next tissue collection cannot be performed. Could be
【００５０】本発明は前記の問題に鑑みてなされたもの
で、切除組織が収納部の外に移動しない吸引生検具を提
供することを目的とする。 （付記項２〜６の課題を解決するための手段および作
用） 本発明は吸引生検具において、組織収納部の手元
側に位置する先端処置部に組織係止手段を設けたことを
特徴とする。内視鏡の鉗子チャンネルを通して吸引生検
具を組織採取部位に誘導し、シース部手元側に設けられ
た吸引手段によって、先端処置部に設けられた吸引孔に
生体組織を引き込む。カッタ部材を先端側に移動し、カ
ッタ部材と吸引孔とのせん断により組織を切除し、組織
収納部に収納する。組織は組織係止手段により収納部か
ら外に移動しない。複数の組織を切除、収納した後に吸
引生検具を内視鏡より抜去して組織を回収する。 （付記項２〜６の効果） 組織収納部に収納した組織片
が先端処置部に移動することが無く、連続的な組織採取
に支障を来さない。The present invention has been made in view of the above problems, and has as its object to provide a suction biopsy tool in which resected tissue does not move out of the storage section. (Means and Actions for Solving the Problems of Supplementary Items 2 to 6) The present invention is characterized in that a tissue locking means is provided in a distal treatment section located near a tissue storage section in a suction biopsy tool. I do. The suction biopsy tool is guided to the tissue sampling site through the forceps channel of the endoscope, and the living tissue is drawn into the suction hole provided in the distal treatment section by suction means provided on the proximal side of the sheath. The cutter member is moved to the distal end side, the tissue is cut off by shearing between the cutter member and the suction hole, and stored in the tissue storage section. The tissue is not moved out of the storage by the tissue locking means. After a plurality of tissues are excised and stored, the suction biopsy tool is removed from the endoscope to collect the tissues. (Effects of Additional Items 2 to 6) The tissue pieces stored in the tissue storage section do not move to the distal treatment section, and do not hinder continuous tissue collection.
【００５１】[0051]
【発明の効果】本発明によれば、先端処置部における吸
引孔よりも先端側に配置された切除組織収納部を可撓性
を有する材料で形成したので、切除された多数の生体組
織を収納することができるとともに、内視鏡の鉗子チャ
ンネル内への挿通性を良好にすることができる。According to the present invention, the resected tissue storage portion disposed distal to the suction hole in the distal treatment section is formed of a flexible material, so that a large number of resected living tissues can be stored. In addition, the endoscope can be easily inserted into the forceps channel.
【図１】 （Ａ）は本発明の第１の実施の形態の吸引生
検具全体の概略構成を示す側面図、（Ｂ）は第１の実施
の形態の吸引生検具の挿入部の先端部の内部構成を示す
縦断面図、（Ｃ）は第１の実施の形態の先端処置部の吸
引孔を示す平面図。FIG. 1A is a side view showing a schematic configuration of the entire suction biopsy tool according to the first embodiment of the present invention, and FIG. 1B is a side view showing an insertion portion of the suction biopsy tool according to the first embodiment. FIG. 3C is a vertical cross-sectional view illustrating an internal configuration of the distal end portion, and FIG.
【図２】 第１の実施の形態の吸引生検具のカッタ部材
の動作状態を示す縦断面図。FIG. 2 is a longitudinal sectional view showing an operation state of a cutter member of the suction biopsy device according to the first embodiment.
【図３】 第１の実施の形態の吸引生検具のカッタ部材
によって切除された生体組織を切除組織収納部に移動す
る動作状態を示す縦断面図。FIG. 3 is a longitudinal sectional view showing an operation state of moving the living tissue cut by the cutter member of the suction biopsy device according to the first embodiment to a cut tissue storage section.
【図４】 第１の実施の形態の吸引生検具の切除組織収
納部内に切除された生体組織を収納した状態を示す縦断
面図。FIG. 4 is a vertical cross-sectional view showing a state where the cut living tissue is stored in the cut tissue storage portion of the suction biopsy device according to the first embodiment.
【図５】 （Ａ）は本発明の第２の実施の形態の吸引生
検具の要部構成を示す縦断面図、（Ｂ）は（Ａ）のＢ−
Ｂ線断面図、（Ｃ）は（Ａ）のＣ−Ｃ線断面図、（Ｄ）
は（Ａ）のＤ−Ｄ線断面図。FIG. 5A is a vertical cross-sectional view showing a configuration of a main part of a suction biopsy device according to a second embodiment of the present invention, and FIG.
(B), (C) is a sectional view taken along the line CC of (A), (D)
FIG. 3 is a cross-sectional view taken along line DD of FIG.
【図６】 第２の実施の形態の吸引生検具のカッタ部材
によって切除された生体組織を切除組織収納部に移動す
る動作状態を示す縦断面図。FIG. 6 is a longitudinal sectional view showing an operation state of moving a living tissue cut by a cutter member of a suction biopsy device according to a second embodiment to a cut tissue storage section.
【図７】 第２の実施の形態の吸引生検具の切除組織収
納部内に切除された生体組織を収納した状態を示す縦断
面図。FIG. 7 is a vertical cross-sectional view showing a state in which cut living tissue is stored in a cut tissue storage portion of the suction biopsy device according to the second embodiment.
【図８】 従来の吸引生検具の先端処置部の内部構成を
示す縦断面図。FIG. 8 is a longitudinal sectional view showing an internal configuration of a distal treatment section of a conventional suction biopsy tool.
４ シース部 ５ 先端処置部 ７ 吸引孔 １０ カッタ部材 １４ 切除組織収納部 １８ 吸引手段 Reference Signs List 4 sheath part 5 distal treatment part 7 suction hole 10 cutter member 14 resected tissue storage part 18 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Continuing on the front page (72) Inventor Kou Kimura 2-43-2 Hatagaya, Shibuya-ku, Tokyo Inside Olympus Optical Industrial Co., Ltd. (72) Inventor Minoru Shinozuka 2-43-2 Hatagaya, Shibuya-ku, Tokyo Olympus Optical Industrial Co., Ltd.
Claims (1)
ース部と、このシース部の先端部に配置され、吸引孔を
備えた先端処置部と、前記シース部の手元側に設けら
れ、前記シース部内を通して前記吸引孔に吸引力を作用
させて前記吸引孔を通して前記先端処置部内に生体組織
を吸引する吸引手段と、前記先端処置部内に前記シース
部の軸方向に沿って移動可能に配設されたカッタ部材
と、前記先端処置部における前記吸引孔よりも先端側に
配置され、前記カッタ部材の移動により切除された生体
組織を収納する可撓性を有する切除組織収納部とを具備
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; a distal treatment portion provided at a distal end portion of the sheath portion and provided with a suction hole; and a distal end treatment portion provided at a hand side of the sheath portion. Suction means for applying a suction force to the suction hole through the sheath portion to suction the living tissue into the distal treatment section through the suction hole, and movably disposed in the distal treatment section along the axial direction of the sheath portion. And a resected tissue storage section, which is disposed closer to the distal end than the suction hole in the distal treatment section and has a flexibility to store a living tissue resected by movement of the cutter member. A suction biopsy tool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29513296A JP3810157B2 (en) | 1996-11-07 | 1996-11-07 | Suction biopsy tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29513296A JP3810157B2 (en) | 1996-11-07 | 1996-11-07 | Suction biopsy tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH10137250A true JPH10137250A (en) | 1998-05-26 |
| JP3810157B2 JP3810157B2 (en) | 2006-08-16 |
Family
ID=17816705
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP29513296A Expired - Fee Related JP3810157B2 (en) | 1996-11-07 | 1996-11-07 | Suction biopsy tool |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3810157B2 (en) |
Cited By (15)
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|---|---|---|---|---|
| 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 |
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| US7909850B2 (en) | 1999-10-25 | 2011-03-22 | Boston Scientific Scimed, Inc. | Forceps for medical use |
| US7942896B2 (en) | 2003-11-25 | 2011-05-17 | Scimed Life Systems, Inc. | Forceps and collection assembly and related methods of use and manufacture |
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| US8083686B2 (en) | 2003-09-10 | 2011-12-27 | Boston Scientific Scimed, Inc. | Forceps and collection assembly with accompanying mechanisms and related methods of use |
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| JP2016538979A (en) * | 2013-10-30 | 2016-12-15 | バイオスコープエックス アーペーエス | Endoscopic device for multiple specimen biopsies |
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| US9623260B2 (en) | 2004-11-05 | 2017-04-18 | Theragenics Corporation | Expandable brachytherapy device |
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-
1996
- 1996-11-07 JP JP29513296A patent/JP3810157B2/en not_active Expired - Fee Related
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| 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 |
| 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 |
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| US7942896B2 (en) | 2003-11-25 | 2011-05-17 | Scimed Life Systems, Inc. | Forceps and collection assembly and related methods of use and manufacture |
| US9623260B2 (en) | 2004-11-05 | 2017-04-18 | Theragenics Corporation | Expandable brachytherapy device |
| US9808650B2 (en) | 2004-11-05 | 2017-11-07 | Theragenics Corporation | Expandable brachytherapy device |
| US8079946B2 (en) | 2005-11-18 | 2011-12-20 | Senorx, Inc. | Asymmetrical irradiation of a body cavity |
| US9180312B2 (en) | 2005-11-18 | 2015-11-10 | Hologic, Inc. | Brachytherapy device for asymmetrical irradiation of a body cavity |
| US10413750B2 (en) | 2005-11-18 | 2019-09-17 | Hologic, Inc. | Brachytherapy device for facilitating asymmetrical irradiation of a body cavity |
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| JP3810157B2 (en) | 2006-08-16 |
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