JP2013255538A - Ultrasonic endoscope - Google Patents

Ultrasonic endoscope Download PDF

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JP2013255538A
JP2013255538A JP2012131574A JP2012131574A JP2013255538A JP 2013255538 A JP2013255538 A JP 2013255538A JP 2012131574 A JP2012131574 A JP 2012131574A JP 2012131574 A JP2012131574 A JP 2012131574A JP 2013255538 A JP2013255538 A JP 2013255538A
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suction
ultrasonic
insertion portion
ultrasonic probe
distal end
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JP6199011B2 (en
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Toshiyuki Hashiyama
俊之 橋山
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Hoya Corp
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Hoya Corp
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Abstract

PROBLEM TO BE SOLVED: To provide an ultrasonic endoscope capable of surely fixing an ultrasonic probe to an observation object, and allowing an endoscopic operation to be performed without using a balloon.SOLUTION: An ultrasonic endoscope includes: an ultrasonic probe 23 provided on a side face of a distal end of an insertion part 12; suction pipelines 26, 26a and 27 provided inside the insertion part and connectable to a negative pressure source at one end; and a suction opening 28 which is formed on an outer peripheral surface of the insertion part forming a cylindrical shape whose center is an axis of the insertion part, to which the other end of the suction pipeline is connected, and whose circumferential direction position around the axis is the same as the ultrasonic probe.

Description

本発明は超音波内視鏡に関する。   The present invention relates to an ultrasonic endoscope.

図４は超音波内視鏡の従来例を示している。
この超音波内視鏡は、操作部と、操作部から延び先端部を除いて可撓性を有する挿入部と、挿入部の先端部の側面に設けた超音波プローブと、挿入部の先端部に超音波プローブの直後に位置させて形成した傾斜面と、挿入部内に形成した、その端部開口が傾斜面において開口する処置具挿通路と、を備えている。
図示するように挿入部の先端部には、超音波プローブを被覆するゴム製のバルーンが被せてあり、バルーンの内部空間（超音波プローブとバルーンの内面の間）には水が充填してある。
超音波内視鏡の挿入部を腸管に挿入しバルーンを腸管の壁に接触させた上で、超音波プローブから超音波を発信すると、超音波内視鏡が（超音波診断装置を介して）接続するＣＲＴモニタに超音波画像が表示される。
さらに術者は、挿入部に形成した基端側開口（図示略）から処置具挿通路に挿入した穿刺針（処置具）の先端を上記端部開口（傾斜面）から突出させることにより、ＣＲＴモニタを見ながら穿刺針による処置を行える。 FIG. 4 shows a conventional example of an ultrasonic endoscope.
The ultrasonic endoscope includes an operation unit, an insertion unit extending from the operation unit and having a flexibility excluding the distal end, an ultrasonic probe provided on a side surface of the distal end of the insertion unit, and a distal end of the insertion unit And a treatment instrument insertion passage formed in the insertion portion, the end opening of which is formed in the inclination surface.
As shown in the figure, the distal end of the insertion portion is covered with a rubber balloon covering the ultrasonic probe, and the internal space of the balloon (between the ultrasonic probe and the inner surface of the balloon) is filled with water. .
After inserting the insertion part of the ultrasonic endoscope into the intestinal tract and bringing the balloon into contact with the wall of the intestinal tract, when the ultrasonic wave is transmitted from the ultrasonic probe, the ultrasonic endoscope (through the ultrasonic diagnostic device) An ultrasonic image is displayed on the connected CRT monitor.
Further, the surgeon protrudes the distal end of the puncture needle (treatment tool) inserted into the treatment instrument insertion path from the proximal end opening (not shown) formed in the insertion portion from the end opening (inclined surface), so that the CRT Treatment with a puncture needle can be performed while looking at the monitor.

特許第３８６９７０７号公報Japanese Patent No. 3869707

しかし腸管の内径が挿入部の外径より大きい場合は、バルーンが腸管の壁から離間してしまい、ＣＲＴモニタに超音波画像を表示できなくなるおそれがある。   However, when the inner diameter of the intestinal tract is larger than the outer diameter of the insertion portion, the balloon is separated from the wall of the intestinal tract, and there is a possibility that an ultrasonic image cannot be displayed on the CRT monitor.

本発明は、超音波プローブを観察対象に対して確実に固定でき、しかもバルーンを用いることなく内視鏡術を行うことが可能な超音波内視鏡を提供することを目的とする。   An object of the present invention is to provide an ultrasonic endoscope that can reliably fix an ultrasonic probe to an observation target and can perform endoscopy without using a balloon.

本発明の超音波内視鏡は、挿入部の先端部の側面に設けた超音波プローブと、上記挿入部内に設けた、一端が負圧源に対して接続可能な吸引用管路と、上記挿入部の軸線を中心とする円筒状をなす該挿入部の外周面に形成した、上記吸引用管路の他端が接続し、かつ上記軸線回りの周方向位置が上記超音波プローブと同じである吸引用開口と、を備えることを特徴としている。   An ultrasonic endoscope according to the present invention includes an ultrasonic probe provided on a side surface of a distal end portion of an insertion portion, a suction conduit provided in the insertion portion, one end of which can be connected to a negative pressure source, and the above The other end of the suction conduit formed on the outer peripheral surface of the insertion portion having a cylindrical shape centering on the axis of the insertion portion is connected, and the circumferential position around the axis is the same as that of the ultrasonic probe. And a certain suction opening.

上記挿入部の上記外周面に上記周方向位置を上記吸引用開口とは異ならせて、上記吸引用管路の他端が接続する補助吸引用開口を形成してもよい。   An auxiliary suction opening to which the other end of the suction conduit is connected may be formed on the outer peripheral surface of the insertion portion with the circumferential position different from the suction opening.

上記挿入部に上記超音波プローブの直後に位置し、かつ上記軸線に対する直交面に対して傾斜する傾斜面を形成し、該傾斜面に、上記挿入部内に形成した処置具挿通路の端部開口を形成してもよい。   An inclined surface which is located immediately after the ultrasonic probe and is inclined with respect to a plane orthogonal to the axis is formed in the insertion portion, and an end opening of a treatment instrument insertion passage formed in the insertion portion is formed on the inclined surface. May be formed.

本発明の超音波内視鏡の挿入部の（円筒状の）外周面には、挿入部内に設けた吸引用管路の端部が接続する吸引用開口が設けてある。
そのため、例えば挿入部を腸管に挿入したときに吸引用開口から腸管の壁に対して負圧を及ぼせば、吸引用開口（挿入部の吸引用開口を形成した部分）を腸管の壁に対して接触させた状態に固定（維持）できる。吸引用開口と超音波プローブは挿入部の軸線回りの周方向位置が同じであるため、吸引用開口（挿入部の吸引用開口を形成した部分）を腸管の壁に対して固定すると、超音波プローブは壁に対して接触した状態に固定（維持）される。
また、超音波プローブを壁に対して直接接触した状態に固定（維持）できるので、挿入部の先端部に（超音波プローブを覆う）バルーンを被せる必要がない。 A suction opening to which an end of a suction conduit provided in the insertion portion is connected is provided on the (cylindrical) outer peripheral surface of the insertion portion of the ultrasonic endoscope of the present invention.
Therefore, for example, if a negative pressure is applied to the wall of the intestinal tract from the suction opening when the insertion portion is inserted into the intestinal tract, the suction opening (the portion where the suction opening of the insertion portion is formed) is made to the wall of the intestinal tract. Can be fixed (maintained). Since the suction opening and the ultrasonic probe have the same circumferential position around the axis of the insertion portion, when the suction opening (the portion where the suction opening of the insertion portion is formed) is fixed to the wall of the intestinal tract, ultrasonic waves The probe is fixed (maintained) in contact with the wall.
In addition, since the ultrasonic probe can be fixed (maintained) in direct contact with the wall, it is not necessary to cover a balloon (covering the ultrasonic probe) on the distal end portion of the insertion portion.

本発明を適用した超音波内視鏡の一実施形態を示す外観図である。1 is an external view showing an embodiment of an ultrasonic endoscope to which the present invention is applied. 腸管に挿入部を挿入した状態を示す側面図である。It is a side view which shows the state which inserted the insertion part in the intestinal tract. 吸引用開口から腸管の壁に負圧を及ぼしたときの図２と同様の側面図である。FIG. 3 is a side view similar to FIG. 2 when a negative pressure is applied from the suction opening to the wall of the intestinal tract. 従来例の図２と同様の側面図である。It is a side view similar to FIG. 2 of a prior art example.

以下、図１から図３を参照しながら本発明の一実施形態について説明する。
図１に示す超音波内視鏡１０は、操作部１１と、操作部１１から前方に延びる挿入部１２と、共に操作部１１から挿入部１２と反対側に延びるユニバーサルチューブ１３、及び、超音波画像伝送用チューブ１４と、ユニバーサルチューブ１３の端部に設けたコネクタ部１３ａと、超音波画像伝送用チューブ１４の端部に設けたコネクタ部１４ａと、を備えている。コネクタ部１３ａはプロセッサ（画像処理装置兼光源装置。図示略）に接続するものであり、コネクタ部１４ａは超音波診断装置（図示略）に接続するものである。超音波診断装置及びプロセッサは共にＣＲＴモニタ（図示略）に接続している。
挿入部１２には、操作部１１に設けた湾曲操作レバー１５の回転操作に応じて上下方向及び左右方向に湾曲する湾曲部１７が形成してあり、湾曲部１７より基端側の部分は自重や施術者の直接的な操作によって湾曲する可撓管部１８となっている。図示するように挿入部１２の外周面は、挿入部１２の軸線を中心とする円筒状である。
挿入部１２における湾曲部１７より先端側の部分は硬質樹脂製の先端硬質部１９となっている。先端硬質部１９の後半部には、挿入部１２の軸線に対する直交面に対して傾斜する傾斜面２０が形成してあり、この傾斜面２０には対物レンズや照明レンズ等（図示略）が設けてある。図示するように先端硬質部１９の傾斜面２０より後方に位置する部分は挿入部１２（及び先端硬質部１９）の軸線を中心とする円筒状である。先端硬質部１９の前半部の側面（図１では上面）には傾斜面２０の直前に位置する超音波プローブ２３が形成してある。 Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 1 to 3.
An ultrasonic endoscope 10 shown in FIG. 1 includes an operation unit 11, an insertion unit 12 extending forward from the operation unit 11, a universal tube 13 extending from the operation unit 11 to the opposite side of the insertion unit 12, and an ultrasonic wave. The tube 14 for image transmission, the connector part 13a provided in the edge part of the universal tube 13, and the connector part 14a provided in the edge part of the tube 14 for ultrasonic image transmission are provided. The connector portion 13a is connected to a processor (image processing device / light source device, not shown), and the connector portion 14a is connected to an ultrasonic diagnostic device (not shown). Both the ultrasonic diagnostic apparatus and the processor are connected to a CRT monitor (not shown).
The insertion portion 12 is formed with a bending portion 17 that bends in the vertical direction and the left-right direction in accordance with the rotation operation of the bending operation lever 15 provided in the operation portion 11. Or a flexible tube portion 18 that is bent by a direct operation of the practitioner. As illustrated, the outer peripheral surface of the insertion portion 12 has a cylindrical shape centered on the axis of the insertion portion 12.
The distal end portion of the insertion portion 12 with respect to the bending portion 17 is a hard resin distal end hard portion 19. An inclined surface 20 that is inclined with respect to a plane orthogonal to the axis of the insertion portion 12 is formed in the latter half of the distal end hard portion 19, and an objective lens, an illumination lens, and the like (not shown) are provided on the inclined surface 20. It is. As shown in the drawing, the portion of the distal end hard portion 19 located behind the inclined surface 20 has a cylindrical shape centered on the axis of the insertion portion 12 (and the distal end hard portion 19). An ultrasonic probe 23 positioned immediately before the inclined surface 20 is formed on the side surface (upper surface in FIG. 1) of the front half portion of the distal end hard portion 19.

図１に示すように操作部１１の前端部には、可撓性を有する穿刺針Ａ（処置具）を挿入するための処置具挿入口突起１１ａが突設してあり、処置具挿入口突起１１ａの端部開口にはキャップ１１ｂが着脱可能に取り付けてある。挿入部１２の内部には処置具挿入口突起１１ａから先端硬質部１９側に向かって延びる吸引兼処置具挿通用チューブ２６（吸引用管路兼処置具挿通路。図１参照）が配設してある。吸引兼処置具挿通用チューブ２６の先端は傾斜面２０において開口している。処置具挿入口突起１１ａから吸引兼処置具挿通用チューブ２６に挿入した穿刺針Ａは、吸引兼処置具挿通用チューブ２６の先端開口（傾斜面２０）から外側に突出可能である。
また挿入部１２、操作部１１、ユニバーサルチューブ１３、及び、コネクタ部１３ａの内部には、一端がコネクタ部１３ａに突設した吸引口金１３ｂに接続する吸引用チューブ２７（吸引用管路）が接続しており、吸引用チューブ２７の他端は吸引兼処置具挿通用チューブ２６と連通している。
さらに吸引兼処置具挿通用チューブ２６の中間部からは５本の分岐チューブ２６ａ（吸引用管路）が分岐しており、各分岐チューブ２６ａの先端部は先端硬質部１９、湾曲部１７、及び、可撓管部１８の外周面にそれぞれ形成した５つの吸引用開口２８にそれぞれ接続している。図示するように各吸引用開口２８と超音波プローブ２３は、挿入部１２の軸線回りの周方向位置が互いに一致している。 As shown in FIG. 1, a treatment instrument insertion port projection 11 a for inserting a flexible puncture needle A (treatment instrument) projects from the front end of the operation unit 11. A cap 11b is detachably attached to the end opening of 11a. Inside the insertion portion 12, there is disposed a suction / treatment device insertion tube 26 (a suction conduit / treatment device insertion passage, see FIG. 1) extending from the treatment device insertion port projection 11a toward the distal end hard portion 19 side. It is. The tip of the suction / treatment instrument insertion tube 26 is open at the inclined surface 20. The puncture needle A inserted into the suction / treatment instrument insertion tube 26 from the treatment instrument insertion port projection 11a can project outward from the distal end opening (inclined surface 20) of the suction / treatment instrument insertion tube 26.
In addition, a suction tube 27 (suction conduit) connected at one end to a suction cap 13b protruding from the connector portion 13a is connected to the insertion portion 12, the operation portion 11, the universal tube 13, and the connector portion 13a. The other end of the suction tube 27 communicates with the suction / treatment instrument insertion tube 26.
Further, five branch tubes 26a (suction conduits) are branched from the middle portion of the suction / treatment instrument insertion tube 26, and the distal end portion of each branch tube 26a has a distal end hard portion 19, a curved portion 17, and The five suction openings 28 respectively formed on the outer peripheral surface of the flexible tube portion 18 are connected to each other. As shown in the drawing, each suction opening 28 and the ultrasonic probe 23 have the same circumferential position around the axis of the insertion portion 12.

続いて、超音波内視鏡１０を利用した内視鏡術について説明する。
コネクタ部１３ａをプロセッサに接続すると共にコネクタ部１４ａを超音波診断装置に接続し、さらに吸引口金１３ｂにチューブを介して負圧源（吸引装置。図示略）を接続した上で、挿入部１２を被検者の口から腸管（胃・十二指腸）Ｂに挿入する。図示するように挿入部１２の外径は腸管Ｂの内径より細いので、挿入部１２と腸管Ｂの間には隙間が形成される。
操作部１１に設けた吸引ボタン１６が図１に示す初期位置に位置するとき、負圧源で発生した負圧は吸引兼処置具挿通用チューブ２６に及ばないが、吸引ボタン１６を（操作部１１の内部側へ）押し込むと負圧源で発生した負圧が吸引用チューブ２７を介して吸引兼処置具挿通用チューブ２６に及ぶ。すると先端硬質部１９の吸引用開口２８（先端硬質部１９の外周面の吸引用開口２８を形成した部分）と湾曲部１７の吸引用開口２８（湾曲部１７の外周面の吸引用開口２８を形成した部分）と可撓管部１８の吸引用開口２８（可撓管部１８の外周面の吸引用開口２８を形成した部分）に対して腸管Ｂの壁が吸引されて固定状態で密着する。そのため各吸引用開口２８と同じ周方向位置に設けられた超音波プローブ２３が腸管Ｂの壁に密着し、超音波プローブ２３と腸管Ｂの壁の密着状態が維持される。
従って、この状態で超音波プローブ２３から超音波を発信すると、腸管Ｂの壁の内部の様子が上記ＣＲＴモニタに超音波画像として表示される。
さらに処置具挿入口突起１１ａからキャップ１１ｂを取り外した後に処置具挿入口突起１１ａから吸引兼処置具挿通用チューブ２６に穿刺針Ａを挿入し、傾斜面２０から突出した穿刺針Ａの先端部を腸管Ｂの壁に突き刺せば、壁の内部に突き刺さった穿刺針Ａの先端部が上記ＣＲＴモニタに超音波画像として表示されるので、施術者は穿刺針Ａによる施術を適切に行うことができる。そして、超音波プローブ２３と腸管Ｂの壁の密着状態（固定状態）が維持されているので、腸管Ｂの壁に対する穿刺針Ａの狙撃性は良好となる。
処置が終わった後に吸引ボタン１６を初期位置に戻すと、負圧が吸引兼処置具挿通用チューブ２６に及ばなくなる。その結果、腸管Ｂの壁が可撓管部１８、湾曲部１７、及び、先端硬質部１９の外周面から離間するので、施術者は挿入部１２を腸管Ｂから口の外側へ引き抜くことができる。 Next, endoscopy using the ultrasonic endoscope 10 will be described.
The connector portion 13a is connected to the processor, the connector portion 14a is connected to the ultrasonic diagnostic apparatus, and a negative pressure source (suction device, not shown) is connected to the suction base 13b via a tube. Insert into the intestine (stomach / duodenum) B from the mouth of the subject. As shown in the drawing, the outer diameter of the insertion portion 12 is thinner than the inner diameter of the intestinal tract B, so that a gap is formed between the insertion portion 12 and the intestinal tract B.
When the suction button 16 provided on the operation unit 11 is located at the initial position shown in FIG. 1, the negative pressure generated by the negative pressure source does not reach the suction / treatment instrument insertion tube 26. 11), the negative pressure generated by the negative pressure source reaches the suction / treatment instrument insertion tube 26 via the suction tube 27. Then, the suction opening 28 of the distal end hard portion 19 (the portion where the suction opening 28 on the outer peripheral surface of the distal end hard portion 19 is formed) and the suction opening 28 of the bending portion 17 (the suction opening 28 on the outer peripheral surface of the bending portion 17 are formed. The wall of the intestinal tract B is sucked and closely attached to the suction opening 28 of the flexible tube portion 18 (the portion where the suction opening 28 on the outer peripheral surface of the flexible tube portion 18 is formed). . Therefore, the ultrasonic probe 23 provided at the same circumferential position as each suction opening 28 is in close contact with the wall of the intestinal tract B, and the close contact state between the ultrasonic probe 23 and the wall of the intestinal tract B is maintained.
Accordingly, when an ultrasonic wave is transmitted from the ultrasonic probe 23 in this state, the state inside the wall of the intestinal tract B is displayed as an ultrasonic image on the CRT monitor.
Further, after removing the cap 11b from the treatment instrument insertion port projection 11a, the puncture needle A is inserted into the suction / treatment device insertion tube 26 from the treatment instrument insertion port projection 11a, and the tip of the puncture needle A protruding from the inclined surface 20 is inserted. If the wall of the intestinal tract B is pierced, the tip of the puncture needle A pierced inside the wall is displayed as an ultrasonic image on the CRT monitor, so that the practitioner can appropriately perform the treatment with the puncture needle A. . And since the adhesion state (fixed state) of the ultrasonic probe 23 and the wall of the intestinal tract B is maintained, the sniping ability of the puncture needle A with respect to the wall of the intestinal tract B becomes good.
When the suction button 16 is returned to the initial position after the treatment is completed, the negative pressure does not reach the suction / treatment instrument insertion tube 26. As a result, the wall of the intestinal tract B is separated from the outer peripheral surfaces of the flexible tube portion 18, the bending portion 17, and the distal end hard portion 19, so that the practitioner can pull out the insertion portion 12 from the intestinal tract B to the outside of the mouth. .

以上、上記実施形態を利用して本発明を説明したが、本発明は様々な変形を施しながら実施可能である。
例えば、上記実施形態では挿入部１２の先端部（超音波プローブ２３）に弾性材料製（例えばシリコンゴム製）のバルーン（図示略）を被せずに超音波内視鏡１０を使用しているが、挿入部１２の先端部（超音波プローブ２３）にバルーンを被せて超音波内視鏡１０を使用してもよい。この場合は、先端硬質部１９の前半部とバルーンの間に出来た空間に水を充填し、吸引用開口２８から腸管Ｂに及ぶ吸引力を利用しながらバルーンを腸管Ｂの壁に密着させて、超音波プローブ２３で発生した超音波をバルーン内の水を介して腸管Ｂの壁に及ぼす。 As mentioned above, although this invention was demonstrated using the said embodiment, this invention can be implemented, giving various deformation | transformation.
For example, in the above-described embodiment, the ultrasonic endoscope 10 is used without covering the distal end portion (ultrasonic probe 23) of the insertion portion 12 with a balloon (not shown) made of an elastic material (for example, silicon rubber). Alternatively, the ultrasonic endoscope 10 may be used by covering the distal end portion (ultrasonic probe 23) of the insertion portion 12 with a balloon. In this case, the space formed between the front half of the distal end hard portion 19 and the balloon is filled with water, and the balloon is brought into close contact with the wall of the intestinal tract B while utilizing the suction force from the suction opening 28 to the intestinal tract B. The ultrasonic wave generated by the ultrasonic probe 23 is applied to the wall of the intestinal tract B through the water in the balloon.

また、上記実施形態及び変形例では、各吸引用開口２８と超音波プローブ２３の周方向位置を完全に一致させている（つまり各吸引用開口２８と超音波プローブ２３を一直線上に位置させている）が、各吸引用開口２８の周方向位置は超音波プローブ２３の周方向位置と実質的に同一であればよく、各吸引用開口２８の周方向位置は超音波プローブ２３の周方向位置から多少ずれてもよい。   In the embodiment and the modification, the circumferential positions of the suction openings 28 and the ultrasonic probes 23 are completely matched (that is, the suction openings 28 and the ultrasonic probes 23 are positioned on a straight line). However, the circumferential position of each suction opening 28 may be substantially the same as the circumferential position of the ultrasonic probe 23, and the circumferential position of each suction opening 28 is the circumferential position of the ultrasonic probe 23. May deviate somewhat from

さらに先端硬質部１９と可撓管部１８と湾曲部１７のうちの一つのみ、或いは、二つのみに吸引用開口２８を形成してもよい。また、先端硬質部１９や可撓管部１８に複数の吸引用開口２８を形成したり、湾曲部１７に形成する吸引用開口２８の数を一つや３つ以外の複数としてもよい。
また先端硬質部１９の後部（傾斜面２０より後方に位置する部分）の外周面や湾曲部１７の外周面や可撓管部１８の外周面に、超音波プローブ２３とは周方向位置をずらして（多少ずらすのではなく、例えば超音波プローブ２３と周方向位置が１８０°ずれた位置に形成する）、吸引用開口２８とは別個の補助吸引用開口を形成し、吸引兼処置具挿通用チューブ２６から分岐した分岐チューブの端部をこれらの補助吸引用開口に接続してもよい。このようにすれば穿刺針Ａを穿刺する際に、腸管Ｂの壁と挿入部１２とが強く固定されているので、穿刺針Ａの狙撃性が高くなる（施術者の意図する位置に穿刺針Ａを刺しやすくなる）。 Further, the suction opening 28 may be formed in only one or two of the distal end hard portion 19, the flexible tube portion 18, and the bending portion 17. Further, a plurality of suction openings 28 may be formed in the distal end hard portion 19 or the flexible tube portion 18, or the number of suction openings 28 formed in the bending portion 17 may be one or a plurality other than three.
In addition, the circumferential position of the ultrasonic probe 23 is shifted from the outer peripheral surface of the rear portion of the distal end hard portion 19 (the portion located behind the inclined surface 20), the outer peripheral surface of the curved portion 17, and the outer peripheral surface of the flexible tube portion 18. (For example, it is formed at a position where the circumferential position of the ultrasonic probe 23 is shifted by 180 °, rather than being slightly shifted), and an auxiliary suction opening that is separate from the suction opening 28 is formed for insertion of the suction and treatment instrument You may connect the edge part of the branch tube branched from the tube 26 to these openings for auxiliary suction. In this way, when the puncture needle A is punctured, the wall of the intestinal tract B and the insertion portion 12 are firmly fixed, so that the sniping ability of the puncture needle A is enhanced (the puncture needle at the position intended by the practitioner). A makes it easier to stab A).

１０ 超音波内視鏡（内視鏡）
１１ 操作部
１１ａ 処置具挿入口突起
１１ｂ キャップ
１２ 挿入部
１３ ユニバーサルチューブ
１３ａ コネクタ部
１３ｂ 吸引口金
１４ 超音波画像伝送用チューブ
１４ａ コネクタ部
１５ 湾曲操作レバー
１６ 吸引ボタン
１７ 湾曲部
１８ 可撓管部
１９ 先端硬質部
２０ 傾斜面
２３ 超音波プローブ
２６ 吸引兼処置具挿通用チューブ（吸引用管路）（処置具挿通路）
２６ａ 分岐チューブ（吸引用管路）
２７ 吸引用チューブ（吸引用管路）
２８ 吸引用開口
Ａ 穿刺針（処置具）
Ｂ 腸管（胃・十二指腸） 10 Ultrasound endoscope (endoscope)
DESCRIPTION OF SYMBOLS 11 Operation part 11a Treatment tool insertion port protrusion 11b Cap 12 Insertion part 13 Universal tube 13a Connector part 13b Suction cap 14 Ultrasonic image transmission tube 14a Connector part 15 Bending operation lever 16 Suction button 17 Bending part 18 Flexible tube part 19 Tip Hard part 20 Inclined surface 23 Ultrasonic probe 26 Suction / treatment instrument insertion tube (suction conduit) (treatment instrument insertion path)
26a Branch tube (suction line)
27 Suction tube (suction line)
28 Aspiration opening A Puncture needle (treatment instrument)
B Intestinal tract (stomach / duodenum)

Claims (3)

挿入部の先端部の側面に設けた超音波プローブと、
上記挿入部内に設けた、一端が負圧源に対して接続可能な吸引用管路と、
上記挿入部の軸線を中心とする円筒状をなす該挿入部の外周面に形成した、上記吸引用管路の他端が接続し、かつ上記軸線回りの周方向位置が上記超音波プローブと同じである吸引用開口と、
を備えることを特徴とする超音波内視鏡。 An ultrasonic probe provided on the side surface of the distal end of the insertion portion;
A suction conduit provided at one end of the insertion portion and connectable to a negative pressure source;
The other end of the suction conduit formed on the outer peripheral surface of the insertion portion having a cylindrical shape centered on the axis of the insertion portion is connected, and the circumferential position around the axis is the same as the ultrasonic probe. A suction opening which is
An ultrasonic endoscope comprising: 請求項１記載の超音波内視鏡において、
上記挿入部の上記外周面に上記周方向位置を上記吸引用開口とは異ならせて、上記吸引用管路の他端が接続する補助吸引用開口を形成した超音波内視鏡。 The ultrasonic endoscope according to claim 1,
An ultrasonic endoscope in which an auxiliary suction opening to which the other end of the suction pipe is connected is formed on the outer peripheral surface of the insertion portion with the circumferential position different from the suction opening. 請求項１または２記載の超音波内視鏡において、
上記挿入部に上記超音波プローブの直後に位置し、かつ上記軸線に対する直交面に対して傾斜する傾斜面を形成し、
該傾斜面に、上記挿入部内に形成した処置具挿通路の端部開口を形成した超音波内視鏡。 The ultrasonic endoscope according to claim 1 or 2,
The insertion portion is located immediately after the ultrasonic probe and forms an inclined surface that is inclined with respect to a plane orthogonal to the axis,
An ultrasonic endoscope in which an end opening of a treatment instrument insertion passage formed in the insertion portion is formed on the inclined surface.
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Publication number Priority date Publication date Assignee Title
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JPH02189139A (en) * 1989-01-19 1990-07-25 Olympus Optical Co Ltd Internal visual ultrasonic diagnosing device
JPH1057339A (en) * 1996-08-19 1998-03-03 Ge Yokogawa Medical Syst Ltd Measuring mr signal, apparatus therefor and mr probe
JP2004105289A (en) * 2002-09-13 2004-04-08 Olympus Corp Ultrasonic endoscope
JP2008253489A (en) * 2007-04-04 2008-10-23 Hoya Corp Distal end of sector scan type ultrasonic endoscope
US20100016665A1 (en) * 2000-01-27 2010-01-21 Boston Scientific Scimed, Inc. Catheter introducer system for exploration of body cavities
JP2010284503A (en) * 2009-03-02 2010-12-24 Olympus Corp Endoscope
JP2011055942A (en) * 2009-09-08 2011-03-24 Fujifilm Corp Endoscope

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6420836A (en) * 1987-07-15 1989-01-24 Olympus Optical Co Antenna device for measuring nmr
JPH02189139A (en) * 1989-01-19 1990-07-25 Olympus Optical Co Ltd Internal visual ultrasonic diagnosing device
JPH1057339A (en) * 1996-08-19 1998-03-03 Ge Yokogawa Medical Syst Ltd Measuring mr signal, apparatus therefor and mr probe
US20100016665A1 (en) * 2000-01-27 2010-01-21 Boston Scientific Scimed, Inc. Catheter introducer system for exploration of body cavities
JP2004105289A (en) * 2002-09-13 2004-04-08 Olympus Corp Ultrasonic endoscope
JP2008253489A (en) * 2007-04-04 2008-10-23 Hoya Corp Distal end of sector scan type ultrasonic endoscope
JP2010284503A (en) * 2009-03-02 2010-12-24 Olympus Corp Endoscope
JP2011055942A (en) * 2009-09-08 2011-03-24 Fujifilm Corp Endoscope

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