JP2008253351A - Treatment tool for endoscope - Google Patents

Treatment tool for endoscope Download PDF

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JP2008253351A
JP2008253351A JP2007096037A JP2007096037A JP2008253351A JP 2008253351 A JP2008253351 A JP 2008253351A JP 2007096037 A JP2007096037 A JP 2007096037A JP 2007096037 A JP2007096037 A JP 2007096037A JP 2008253351 A JP2008253351 A JP 2008253351A
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distal end
distal
flexible sheath
treatment member
axial direction
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JP4503038B2 (en
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Masayasu Sato
雅康 佐藤
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Hoya Corp
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Hoya Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a treatment tool for an endoscope with high operability allowing an operator to easily perform the accurate treatment operation without feeling fatigue because the direction of a distal treatment member is retained without applying the operation force to an operation wire after the direction of the treatment member is correctly set. <P>SOLUTION: The treatment tool for the endoscope has rotation restraining means 8 on the distal end side and the distal end treatment member 3 side of a flexible sheath 1. The rotation restraining means 8 is in the engaged state to restrain the distal end treatment member 3 from rotating in the axial direction relative to the distal end of the flexible sheath 1 in only a part of the range of retraction of the distal end treatment member 3 relative to the distal end of the flexible sheath 1. The treatment tool also has an energizing means 7 in the distal end area of the flexible sheath 1 for energizing the distal end treatment member 3 in the axial direction toward the location where the rotation restraining means 8 is in the engaged state. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

この発明は、内視鏡用処置具に関する。   The present invention relates to an endoscope treatment tool.

体内粘膜を高周波電流で切開／切除するための内視鏡用処置具等においては、可撓性シース内に導電性の操作ワイヤが軸線方向に進退自在に挿通配置されて、その操作ワイヤを基端側から進退操作することにより操作ワイヤの先端に連結された先端処置部材が可撓性シースの先端に対して軸線方向に進退する構成を採っており、さらに、操作ワイヤを基端側から軸線周りに回転操作することにより先端処置部材が可撓性シースの先端に対して軸線周り方向に回転するように構成して、狙撃性を向上させたものがある。   In an endoscopic treatment instrument or the like for incising / removing a mucous membrane in a body with a high-frequency current, a conductive operation wire is inserted and disposed in a flexible sheath so as to be movable back and forth in the axial direction. The distal treatment member connected to the distal end of the operation wire is advanced and retracted in the axial direction with respect to the distal end of the flexible sheath by advancing and retracting from the end side. Further, the operation wire is moved from the proximal end side to the axial line. Some of the distal treatment members are configured to rotate in the direction around the axis with respect to the distal end of the flexible sheath by rotating around, thereby improving sniperability.

しかし、単に先端処置部材が可撓性シースの先端に対して軸線周り方向に回転する構造にしたのでは、いざ体内粘膜を切開／切除する際に先端処置部材が振らついてしまうので、却って狙った通りに切開／切除を行えない場合がある。   However, if the tip treatment member is simply configured to rotate in the direction around the axis relative to the tip of the flexible sheath, the tip treatment member will shake when incising / removing the mucosa in the body. Incisions / resections may not be possible on the street.

そこで、可撓性シースの先端に対する先端処置部材の進退範囲の一部分のみにおいて先端処置部材が可撓性シースの先端に対して軸線周り方向に回転するのを規制する係合状態になる回転規制手段を可撓性シースの先端側と先端処置部材側とに設け、切開／切除を行う際には、先端処置部材が可撓性シースの先端に対して軸線周り方向に回転できないように改良したものがある（例えば、特許文献１）。
特開２００４−２６１３７２ Therefore, the rotation restricting means that is in an engagement state that restricts the distal treatment member from rotating in the direction around the axis relative to the distal end of the flexible sheath only in a part of the advance / retreat range of the distal treatment member relative to the distal end of the flexible sheath. Is provided on the distal end side and distal treatment member side of the flexible sheath so that the distal treatment member cannot be rotated around the axis with respect to the distal end of the flexible sheath when performing incision / resection (For example, Patent Document 1).
JP2004-261372

しかし、特許文献１に記載された発明等において、切開／切除を行う際に回転規制手段が係合した状態を維持するためには、可撓性シースの基端に連結された操作部において手動で操作ワイヤを押し込んだ状態に保持し続ける必要がある。   However, in the invention described in Patent Document 1, in order to maintain the state in which the rotation restricting means is engaged when performing incision / resection, the operation unit connected to the proximal end of the flexible sheath is manually operated. Therefore, it is necessary to keep the operation wire pushed in.

そして、操作ワイヤに対する押し込み動作が緩むと回転規制手段の係合が外れて先端処置部材が自由に回転し、切開／切除を適切な向きで行えなくなってしまう場合があるので、操作者は切開／切除が終了するまで押し込み操作の力を全く抜くことができず、指が疲れてしまう等操作性が悪かった。   Then, if the pushing operation with respect to the operation wire is loosened, the rotation restricting means is disengaged and the distal treatment member rotates freely, so that the incision / resection cannot be performed in an appropriate direction. Until the excision was completed, the force of the push-in operation could not be completely removed, and the operability such as the finger getting tired was bad.

本発明は、先端処置部材の向きが適正にセットされた後は、操作ワイヤに操作力を加えることなくその向きが維持されて、正確な処置操作を疲労することなく容易に行うことができる操作性のよい内視鏡用処置具を提供することを目的とする。   According to the present invention, after the distal treatment member is properly set, the orientation is maintained without applying an operation force to the operation wire, and an operation capable of easily performing an accurate treatment operation without fatigue. An object of the present invention is to provide a good endoscopic treatment tool.

上記の目的を達成するため、本発明の内視鏡用処置具は、可撓性シース内に操作ワイヤが軸線方向に進退自在に挿通配置されて、操作ワイヤを基端側から進退操作することにより操作ワイヤの先端に連結された先端処置部材が可撓性シースの先端に対して軸線方向に進退し、操作ワイヤを基端側から軸線周りに回転操作することにより先端処置部材が可撓性シースの先端に対して軸線周り方向に回転するように構成されると共に、可撓性シースの先端に対する先端処置部材の進退範囲の一部分のみにおいて先端処置部材が可撓性シースの先端に対して軸線周り方向に回転するのを規制する係合状態になる回転規制手段が可撓性シースの先端側と先端処置部材側とに設けられた内視鏡用処置具において、回転規制手段が係合状態になる位置に向かって先端処置部材を軸線方向に付勢する付勢手段が、可撓性シースの先端部分に設けられているものである。   In order to achieve the above object, an endoscope treatment instrument according to the present invention is configured such that an operation wire is inserted into a flexible sheath so as to freely advance and retract in the axial direction, and the operation wire is advanced and retracted from the proximal end side. The distal treatment member connected to the distal end of the operation wire is advanced and retracted in the axial direction with respect to the distal end of the flexible sheath, and the distal treatment member is flexible by rotating the manipulation wire about the axis from the proximal end side. The distal treatment member is configured to rotate in the direction around the axis with respect to the distal end of the sheath, and the distal treatment member is axial with respect to the distal end of the flexible sheath only in a part of the advance / retreat range of the distal treatment member with respect to the distal end of the flexible sheath. In the endoscope treatment instrument in which the rotation restricting means for restricting the rotation in the circumferential direction is provided on the distal end side and the distal treatment member side of the flexible sheath, the rotation restricting means is in the engaged state. To the position to become Biasing means for biasing the distal end treatment member in the axial direction I is one that is provided on the tip portion of the flexible sheath.

なお、付勢手段が、先端処置部材を可撓性シースの先端から前方に押し出す方向に付勢するスプリングであってもよく、或いは、先端処置部材を可撓性シースの先端内に引っ込める方向に付勢するスプリングであってもよい。   The urging means may be a spring that urges the distal treatment member in a direction to push it forward from the distal end of the flexible sheath, or in a direction in which the distal treatment member is retracted into the distal end of the flexible sheath. An urging spring may be used.

本発明によれば、可撓性シースの先端に対する先端処置部材の進退範囲の一部分のみにおいて先端処置部材が可撓性シースの先端に対して軸線周り方向に回転するのを規制する係合状態になる回転規制手段が可撓性シースの先端側と先端処置部材側とに設けられた内視鏡用処置具において、回転規制手段が係合状態になる位置に向かって先端処置部材を軸線方向に付勢する付勢手段が可撓性シースの先端部分に設けられていることにより、先端処置部材の向きが適正にセットされた後は、操作ワイヤに操作力を加えることなくその向きが維持されるので、正確な処置操作を疲労することなく容易に行うことができ、非常に優れた操作性を得ることができる。   According to the present invention, the engagement state restricts the rotation of the distal treatment member relative to the distal end of the flexible sheath in the direction around the axis only in a part of the advance / retreat range of the distal treatment member relative to the distal end of the flexible sheath. In the endoscope treatment instrument in which the rotation restricting means is provided on the distal end side and the distal treatment member side of the flexible sheath, the distal treatment member is moved in the axial direction toward the position where the rotation restricting means is engaged. Since the biasing means for biasing is provided at the distal end portion of the flexible sheath, the orientation of the distal treatment member is maintained without applying manipulation force to the manipulation wire after the distal treatment member is properly oriented. Therefore, an accurate treatment operation can be easily performed without fatigue, and very excellent operability can be obtained.

可撓性シース内に操作ワイヤが軸線方向に進退自在に挿通配置されて、操作ワイヤを基端側から進退操作することにより操作ワイヤの先端に連結された先端処置部材が可撓性シースの先端に対して軸線方向に進退し、操作ワイヤを基端側から軸線周りに回転操作することにより先端処置部材が可撓性シースの先端に対して軸線周り方向に回転するように構成されると共に、可撓性シースの先端に対する先端処置部材の進退範囲の一部分のみにおいて先端処置部材が可撓性シースの先端に対して軸線周り方向に回転するのを規制する係合状態になる回転規制手段が可撓性シースの先端側と先端処置部材側とに設けられた内視鏡用処置具において、回転規制手段が係合状態になる位置に向かって先端処置部材を軸線方向に付勢する付勢手段が、可撓性シースの先端部分に設けられている。   The distal treatment member connected to the distal end of the operation wire is inserted into the flexible sheath so that the manipulation wire is inserted and disposed so as to be movable back and forth in the axial direction, and the manipulation wire is advanced and retracted from the proximal end side. The distal treatment member is configured to rotate in the axial direction with respect to the distal end of the flexible sheath by moving forward and backward in the axial direction relative to the distal end of the flexible sheath. Only in a part of the advancement / retraction range of the distal treatment member with respect to the distal end of the flexible sheath, a rotation restricting means that enters an engagement state that restricts the distal treatment member from rotating in the direction around the axis with respect to the distal end of the flexible sheath is possible. In the endoscope treatment tool provided on the distal end side and the distal treatment member side of the flexible sheath, the urging means for urging the distal treatment member in the axial direction toward the position where the rotation restricting means is engaged. But possible Provided at the tip portion of the sex sheath.

以下、図面を参照して本発明の実施例を説明する。
図２は内視鏡用処置具の全体構成を示しており、図示されていない内視鏡の処置具挿通チャンネルに挿脱される可撓性シース１は、例えば四フッ化エチレン樹脂チューブ等のような電気絶縁性の可撓性チューブにより形成されている。 Embodiments of the present invention will be described below with reference to the drawings.
FIG. 2 shows the overall configuration of the endoscope treatment tool. The flexible sheath 1 inserted into and removed from the endoscope treatment tool insertion channel (not shown) is, for example, a tetrafluoroethylene resin tube or the like. It is formed by such an electrically insulating flexible tube.

可撓性シース１内には、導電性の操作ワイヤ２が軸線方向に進退自在に全長にわたって挿通配置されていて、導電性の剛体からなる先端処置部材３が可撓性シース１の先端に連結されている。なお、この実施例の先端処置部材３はフック状に形成されているが、その他の形状のものであってもよい。   In the flexible sheath 1, a conductive operation wire 2 is inserted and arranged over the entire length so as to be movable back and forth in the axial direction, and a distal treatment member 3 made of a conductive rigid body is connected to the distal end of the flexible sheath 1. Has been. Although the distal treatment member 3 of this embodiment is formed in a hook shape, it may have other shapes.

１０は、可撓性シース１の基端側から操作ワイヤ２を進退操作するための操作部であり、可撓性シース１の基端に取り付けられた基端口金１２が、操作部本体１１の先端に取り付けられた受け口金１３に対して、例えばルアーロック係合等により着脱自在に連結されている。   Reference numeral 10 denotes an operation unit for operating the operation wire 2 forward and backward from the proximal end side of the flexible sheath 1, and a proximal end cap 12 attached to the proximal end of the flexible sheath 1 is attached to the operation unit main body 11. It is detachably connected to the receiving cap 13 attached to the tip by, for example, luer lock engagement.

受け口金１３は、操作部本体１１に対して軸線方向には移動できないが軸線周りには回転自在に取り付けられており、受け口金１３を動かないように保持して操作部本体１１を軸線周りに回転させれば、可撓性シース１内で操作ワイヤ２が軸線周りに回転して、先端処置部材３が可撓性シース１の先端部分で軸線周り方向に回転する。   The receiving base 13 cannot be moved in the axial direction with respect to the operation unit main body 11 but is rotatably mounted around the axial line. The holding base 13 is held so as not to move, and the operating unit main body 11 is moved around the axis. When rotated, the operation wire 2 rotates around the axis within the flexible sheath 1, and the distal treatment member 3 rotates around the axis at the distal end portion of the flexible sheath 1.

操作部本体１１にスライド自在に係合するスライド操作部材１４は、操作ワイヤ２の基端２ａが連結されたスライド部材１４ａと操作者の指を係合させる指掛け１４ｂとが一体的に結合されたものであり、図示されていない高周波電源コードを接続するための接続端子１５が操作ワイヤ２に電気的に導通する状態に配置されている。   The slide operation member 14 that is slidably engaged with the operation unit main body 11 includes a slide member 14a to which the proximal end 2a of the operation wire 2 is coupled and a finger hook 14b for engaging the operator's finger. A connection terminal 15 for connecting a high-frequency power cord (not shown) is arranged in a state of being electrically connected to the operation wire 2.

その結果、矢印Ａで示されるようにスライド操作部材１４をスライド操作することにより、操作ワイヤ２が可撓性シース１内で軸線方向に進退して、矢印Ｂで示されるように先端処置部材３が可撓性シース１の先端の前方において軸線方向に進退する。また、接続端子１５に高周波電源コードを接続することにより、操作ワイヤ２を介して先端処置部材３に高周波電流を通電することができる。   As a result, by sliding the slide operation member 14 as indicated by the arrow A, the operation wire 2 advances and retreats in the axial direction within the flexible sheath 1, and the distal treatment member 3 as indicated by the arrow B. Moves forward and backward in the axial direction in front of the distal end of the flexible sheath 1. Further, by connecting a high frequency power cord to the connection terminal 15, a high frequency current can be applied to the distal treatment member 3 via the operation wire 2.

図１は、可撓性シース１の先端付近を示しており、操作ワイヤ２と先端処置部材３は金属製の接続パイプ４により機械的及び電気的に接続されている。可撓性シース１の最先端部分には略円筒状の先端口金５が固定的に取り付けられて、その先端口金５の先端開口より内径の小さな抜け止め筒体６が先端口金５の最先端部分に固着されている。   FIG. 1 shows the vicinity of the distal end of the flexible sheath 1, and the operation wire 2 and the distal treatment member 3 are mechanically and electrically connected by a metal connection pipe 4. A substantially cylindrical distal end cap 5 is fixedly attached to the most distal end portion of the flexible sheath 1, and a retaining cylinder 6 having an inner diameter smaller than the distal end opening of the distal end cap 5 is the most distal end portion of the distal end base 5. It is fixed to.

先端口金５内に位置する先端処置部材３の基部には、図３にも示されるように、上下一対の係合突起８ａが側方に突出形成されている。また、抜け止め筒体６の先端内周部分には、図１におけるIV−IV断面を図示する図４に示されるように、先端処置部材３に形成された係合突起８ａが軸線方向に移動することにより係脱する放射状の係合溝８ｂが全周にわたって等間隔に形成されている。   As shown in FIG. 3, a pair of upper and lower engaging protrusions 8 a are formed on the base portion of the distal treatment member 3 located in the distal end cap 5 so as to protrude laterally. Further, on the inner peripheral portion of the distal end of the retaining cylinder 6, as shown in FIG. 4 illustrating the IV-IV cross section in FIG. 1, the engagement protrusion 8 a formed on the distal treatment member 3 moves in the axial direction. Thus, radial engagement grooves 8b that are engaged and disengaged are formed at equal intervals over the entire circumference.

なお、この実施例では係合溝８ｂが３０°間隔で１２個形成されていて、係合突起８ａはその中のどの係合溝８ｂに対してもガタつきなく係合することができる。なお、各係合溝８ｂ間の間隔が狭ければ狭いほど、以下に説明する先端処置部材３の回転方向固定時における向きを、細かい角度間隔で規制することができる。   In this embodiment, twelve engagement grooves 8b are formed at intervals of 30 °, and the engagement protrusions 8a can be engaged with any of the engagement grooves 8b therein without rattling. In addition, the direction at the time of fixing the rotation direction of the distal treatment member 3 to be described below can be regulated with finer angular intervals as the interval between the engagement grooves 8b is narrower.

先端処置部材３は、可撓性シース１の先端に対して（したがって、先端口金５及び抜け止め筒体６に対しても）軸線方向に進退自在に配置されていて、図１に示されるように係合突起８ａが抜け止め筒体６の先端小径部に後方から当接することにより、先端処置部材３のそれ以上の前進が規制される。   The distal treatment member 3 is disposed so as to be movable forward and backward in the axial direction with respect to the distal end of the flexible sheath 1 (and therefore also with respect to the distal end cap 5 and the retaining cylinder 6), as shown in FIG. Further, when the engagement protrusion 8a comes into contact with the small diameter portion of the distal end of the retaining cylinder 6 from the rear, further advancement of the distal treatment member 3 is restricted.

したがって、先端処置部材３がその進退範囲の前端位置にあるときは、係合突起８ａが係合溝８ｂに係合していて、先端処置部材３が可撓性シース１の先端に対して軸線周り方向に回転できない状態になる。   Therefore, when the distal treatment member 3 is at the front end position of the advance / retreat range, the engagement protrusion 8 a is engaged with the engagement groove 8 b, and the distal treatment member 3 is axial with respect to the distal end of the flexible sheath 1. Cannot rotate in the surrounding direction.

そして、先端処置部材３が操作ワイヤ２で牽引されて後方（即ち、可撓性シース１内の方向）に移動すると、図５に示されるように係合突起８ａと係合溝８ｂとの係合が外れて、先端処置部材３が可撓性シース１の先端に対して軸線周り方向に自由に回転できる状態になり、手元側で可撓性シース１に対して操作部１０を軸線周りに回転させることにより、可撓性シース１の先端で先端処置部材３が軸線周り方向に回転する。   Then, when the distal treatment member 3 is pulled by the operation wire 2 and moves rearward (that is, in the direction within the flexible sheath 1), the engagement between the engagement protrusion 8a and the engagement groove 8b as shown in FIG. As a result, the distal end treatment member 3 can freely rotate in the direction around the axis with respect to the distal end of the flexible sheath 1, and the operation unit 10 is moved around the axis with respect to the flexible sheath 1 on the hand side. By rotating, the distal treatment member 3 rotates around the axis at the distal end of the flexible sheath 1.

このように構成された内視鏡用処置具の可撓性シース１の先端に取り付けられた先端口金５内には、図１及び図５に示されるように、圧縮コイルスプリング７が、先端処置部材３を前方に向かって押し出す方向に付勢する状態に、係合突起８ａの後端に後方から当接して配置されている。   In the distal end cap 5 attached to the distal end of the flexible sheath 1 of the endoscope treatment instrument thus configured, as shown in FIGS. 1 and 5, a compression coil spring 7 is disposed at the distal end treatment. The member 3 is disposed in contact with the rear end of the engagement protrusion 8a from behind in a state where the member 3 is urged in the direction of pushing forward.

したがって、操作部１０が何も操作されていない状態では、図１に示されるように回転規制手段８が係合状態（即ち、係合突起８ａと係合溝８ｂとが係合した状態）になっていて、操作部１０でスライド操作部材１４により操作ワイヤ２が牽引操作された状態の時だけ、図５に示されるように回転規制手段８の係合状態が解除されて、先端処置部材３が可撓性シース１に対して軸線周り方向に回転可能になる。   Therefore, in a state where nothing is operated on the operation portion 10, the rotation restricting means 8 is in the engaged state (that is, the state where the engagement protrusion 8a and the engagement groove 8b are engaged) as shown in FIG. Thus, only when the operation wire 2 is pulled by the operation portion 10 by the slide operation member 14, the engagement state of the rotation restricting means 8 is released as shown in FIG. Becomes rotatable about the axis with respect to the flexible sheath 1.

そこで、この実施例の内視鏡用処置具を用いる際には、先端処置部材３が目標患部等に臨む状態に誘導されたところで、操作部１０において圧縮コイルスプリング７の付勢力に抗してスライド操作部材１４を牽引し、その状態において、受け口金１３を動かないように保持して操作部本体１１をスライド操作部材１４と共に軸線周りに回転させる。   Therefore, when using the endoscope treatment tool of this embodiment, when the distal treatment member 3 is guided to face the target affected area or the like, the operation portion 10 resists the biasing force of the compression coil spring 7. The slide operation member 14 is pulled, and in this state, the receiving base 13 is held so as not to move, and the operation portion main body 11 is rotated around the axis together with the slide operation member 14.

すると、図５に示されるように可撓性シース１の先端で先端処置部材３が軸線周り方向に回転するので、先端処置部材３が患部の処置を行うのに最も適した向きになったところでスライド操作部材１４の牽引操作を止めると、図１に示されるように、圧縮コイルスプリング７の付勢力により回転規制手段８が係合状態になって、先端処置部材３が可撓性シース１の先端で軸線周り方向に回転できない状態になる。圧縮コイルスプリング７が回転規制手段８に隣接して可撓性シース１の先端に配置されているので、そのような切換動作が確実に行われる。   Then, as shown in FIG. 5, the distal treatment member 3 rotates in the direction around the axis at the distal end of the flexible sheath 1, so that the distal treatment member 3 is in the most suitable orientation for treating the affected area. When the pulling operation of the slide operation member 14 is stopped, as shown in FIG. 1, the rotation regulating means 8 is engaged by the urging force of the compression coil spring 7, and the distal treatment member 3 is attached to the flexible sheath 1. The tip cannot rotate around the axis. Since the compression coil spring 7 is disposed at the tip of the flexible sheath 1 adjacent to the rotation restricting means 8, such a switching operation is reliably performed.

この時、係合突起８ａは３０°間隔で形成されている１２個の係合溝８ｂの中の一番近い係合溝８ｂと係合するので、最大１５°程度まで回転する場合があるが、その程度までの先端処置部材３の偏角は一般に許容される。   At this time, the engaging protrusion 8a engages with the closest engaging groove 8b among the twelve engaging grooves 8b formed at intervals of 30 °, and may rotate up to about 15 °. The deflection angle of the distal treatment member 3 to that extent is generally allowed.

そのようにして先端処置部材３の向きが可撓性シース１の先端で固定された状態になり、引き続いて先端処置部材３に高周波電流を通電して粘膜切開処置等を行う際には、操作部１０を何ら操作することなく先端処置部材３が可撓性シース１の先端で軸線周り方向に固定された状態になっているので、安全かつ容易に切開処置等を行うことができる。   Thus, when the distal treatment member 3 is fixed at the distal end of the flexible sheath 1 and a high-frequency current is subsequently applied to the distal treatment member 3 to perform a mucosal incision treatment or the like, Since the distal treatment member 3 is fixed in the direction around the axis at the distal end of the flexible sheath 1 without any operation of the portion 10, an incision treatment or the like can be performed safely and easily.

図６は、本発明の第２の実施例の内視鏡用処置具の先端付近を示しており、圧縮コイルスプリング７が先端処置部材３を可撓性シース１内に引っ込める方向に後方に向かって付勢する状態に配置され、図６に示されるように、先端処置部材３がその軸線方向移動範囲の後端位置にある時に回転規制手段８が係合状態になるように、係合溝８ｂが先端口金５の後端位置に設けられている。このように構成しても、前述の第１の実施例と同様の作用効果を得ることができる。   FIG. 6 shows the vicinity of the distal end of the endoscope treatment instrument according to the second embodiment of the present invention, and the compression coil spring 7 faces backward in the direction in which the distal treatment member 3 is retracted into the flexible sheath 1. As shown in FIG. 6, the engaging groove is arranged so that the rotation restricting means 8 is engaged when the distal treatment member 3 is at the rear end position of the axial movement range. 8 b is provided at the rear end position of the tip cap 5. Even if comprised in this way, the effect similar to the above-mentioned 1st Example can be acquired.

なお、本発明は上記実施例に限定されるものではなく、例えば、本発明は高周波電流を用いない内視鏡用処置具にも適用することができる。   In addition, this invention is not limited to the said Example, For example, this invention is applicable also to the treatment tool for endoscopes which does not use a high frequency current.

本発明の第１の実施例の内視鏡用処置具の先端付近の側面断面図である。It is side surface sectional drawing of the front-end | tip vicinity of the treatment tool for endoscopes of 1st Example of this invention. 本発明の第１の実施例の内視鏡用処置具の全体構成図である。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an overall configuration diagram of an endoscope treatment tool according to a first embodiment of the present invention. 本発明の第１の実施例の内視鏡用処置具の先端処置部材の斜視図である。It is a perspective view of the front-end | tip treatment member of the treatment tool for endoscopes of 1st Example of this invention. 本発明の第１の実施例の内視鏡用処置具の図１におけるIV−IV断面図である。It is IV-IV sectional drawing in FIG. 1 of the treatment tool for endoscopes of 1st Example of this invention. 本発明の第１の実施例の内視鏡用処置具において操作ワイヤが操作部側から牽引操作された状態の先端付近の側面断面図である。It is side surface sectional drawing of the front-end | tip vicinity of the state by which the operation wire was pulled by the operation part side in the treatment tool for endoscopes of 1st Example of this invention. 本発明の第２の実施例の内視鏡用処置具の先端付近の側面断面図である。It is side surface sectional drawing of the front-end | tip vicinity of the treatment tool for endoscopes of 2nd Example of this invention.

符号の説明Explanation of symbols

１ 可撓性シース
２ 操作ワイヤ
３ 先端処置部材
７ 圧縮コイルスプリング（付勢手段）
８ 回転規制手段
８ａ 係合突起
８ｂ 係合溝
１０ 操作部
１３ 受け口金
１４ スライド操作部材 DESCRIPTION OF SYMBOLS 1 Flexible sheath 2 Operation wire 3 End treatment member 7 Compression coil spring (biasing means)
DESCRIPTION OF SYMBOLS 8 Rotation restriction means 8a Engagement protrusion 8b Engagement groove 10 Operation part 13 Receiving cap 14 Slide operation member

Claims (3)

可撓性シース内に操作ワイヤが軸線方向に進退自在に挿通配置されて、上記操作ワイヤを基端側から進退操作することにより上記操作ワイヤの先端に連結された先端処置部材が上記可撓性シースの先端に対して軸線方向に進退し、上記操作ワイヤを基端側から軸線周りに回転操作することにより上記先端処置部材が上記可撓性シースの先端に対して軸線周り方向に回転するように構成されると共に、上記可撓性シースの先端に対する上記先端処置部材の進退範囲の一部分のみにおいて上記先端処置部材が上記可撓性シースの先端に対して軸線周り方向に回転するのを規制する係合状態になる回転規制手段が上記可撓性シースの先端側と上記先端処置部材側とに設けられた内視鏡用処置具において、
上記回転規制手段が係合状態になる位置に向かって上記先端処置部材を軸線方向に付勢する付勢手段が、上記可撓性シースの先端部分に設けられていることを特徴とする内視鏡用処置具。 An operation wire is inserted and disposed in the flexible sheath so as to be movable back and forth in the axial direction, and the distal treatment member connected to the distal end of the operation wire is operated by moving the operation wire forward and backward from the proximal end side. Advancing and retreating in the axial direction with respect to the distal end of the sheath, and rotating the operation wire about the axis from the proximal end side so that the distal treatment member rotates in the axial direction with respect to the distal end of the flexible sheath. And restricting the distal treatment member from rotating in the axial direction relative to the distal end of the flexible sheath only in a part of the advance / retreat range of the distal treatment member relative to the distal end of the flexible sheath. In the endoscope treatment tool in which the rotation restricting means that is in the engaged state is provided on the distal end side of the flexible sheath and the distal treatment member side,
An internal view characterized in that biasing means for biasing the distal treatment member in the axial direction toward a position where the rotation restricting means is engaged is provided at a distal end portion of the flexible sheath. Mirror treatment tool. 上記付勢手段が、上記先端処置部材を上記可撓性シースの先端から前方に押し出す方向に付勢するスプリングである請求項１記載の内視鏡用処置具。   The endoscope treatment tool according to claim 1, wherein the urging means is a spring that urges the distal treatment member in a direction of pushing forward from the distal end of the flexible sheath. 上記付勢手段が、上記先端処置部材を上記可撓性シースの先端内に引っ込める方向に付勢するスプリングである請求項１記載の内視鏡用処置具。   The endoscope treatment tool according to claim 1, wherein the urging means is a spring that urges the distal treatment member in a direction in which the distal treatment member is retracted into the distal end of the flexible sheath.
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011092743A (en) * 2009-10-30 2011-05-12 Tyco Healthcare Group Lp Jaw roll joint
WO2021176654A1 (en) * 2020-03-05 2021-09-10 オリンパス株式会社 Endoscope treatment tool
US12023088B2 (en) 2020-10-26 2024-07-02 Covidien Lp Articulating surgical instrument for treating tissue with electrosurgical energy

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08501470A (en) * 1992-09-15 1996-02-20 ユーン、インバエ Automatic retractable safety insertion tool
JP2002051974A (en) * 2000-08-14 2002-02-19 Fuji Photo Optical Co Ltd Endoscope manipulator
JP2003052704A (en) * 1992-05-19 2003-02-25 Olympus Optical Co Ltd Suturing apparatus
JP2004261372A (en) * 2003-02-28 2004-09-24 Olympus Corp Treatment tool for endoscope

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003052704A (en) * 1992-05-19 2003-02-25 Olympus Optical Co Ltd Suturing apparatus
JPH08501470A (en) * 1992-09-15 1996-02-20 ユーン、インバエ Automatic retractable safety insertion tool
JP2002051974A (en) * 2000-08-14 2002-02-19 Fuji Photo Optical Co Ltd Endoscope manipulator
JP2004261372A (en) * 2003-02-28 2004-09-24 Olympus Corp Treatment tool for endoscope

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011092743A (en) * 2009-10-30 2011-05-12 Tyco Healthcare Group Lp Jaw roll joint
US9084607B2 (en) 2009-10-30 2015-07-21 Covidien Lp Jaw roll joint
US10045813B2 (en) 2009-10-30 2018-08-14 Covidien Lp Jaw roll joint
US11317963B2 (en) 2009-10-30 2022-05-03 Covidien Lp Jaw roll joint
WO2021176654A1 (en) * 2020-03-05 2021-09-10 オリンパス株式会社 Endoscope treatment tool
US12023088B2 (en) 2020-10-26 2024-07-02 Covidien Lp Articulating surgical instrument for treating tissue with electrosurgical energy

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