JPH0747027B2 - Ultrasound endoscope - Google Patents
Ultrasound endoscopeInfo
- Publication number
- JPH0747027B2 JPH0747027B2 JP63110175A JP11017588A JPH0747027B2 JP H0747027 B2 JPH0747027 B2 JP H0747027B2 JP 63110175 A JP63110175 A JP 63110175A JP 11017588 A JP11017588 A JP 11017588A JP H0747027 B2 JPH0747027 B2 JP H0747027B2
- Authority
- JP
- Japan
- Prior art keywords
- ultrasonic
- puncture needle
- tip
- ultrasonic probe
- tip block
- 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.)
- Expired - Lifetime
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Description
【発明の詳細な説明】 ［産業上の利用分野］ 本発明は、人体内腔に挿入し内腔の光学観察とその周囲
の超音波検査を行なう超音波内視鏡に係わり、詳しくは
超音波断層検査領域に穿刺針を穿刺し、この穿刺針の位
置を超音波断層像で確認しつつ安全に穿刺を行なう超音
波ガイド穿刺機能を有する超音波内視鏡の先端構造に関
するものである。Description: TECHNICAL FIELD The present invention relates to an ultrasonic endoscope that is inserted into a human body cavity to perform optical observation of the lumen and ultrasonic examination of the surrounding area. The present invention relates to a tip structure of an ultrasonic endoscope having an ultrasonic guided puncture function of puncturing a tomographic examination region with a puncture needle and safely performing puncture while confirming the position of the puncture needle with an ultrasonic tomographic image.
［従来の技術］ 体腔内からの超音波ガイド穿刺は、体表からの超音波診
断では発見しにくい微少病変へ膵臓等の他の臓器が邪魔
をして体表からの超音波ガイド穿刺がしにくい臓器に対
しても対応できることから超音波ガイド穿刺が可能な超
音波内視鏡の開発が望まれている。[Prior Art] Ultrasonic guided puncture from inside a body cavity causes ultrasonically guided puncture from the surface of the body to interfere with other organs, such as the pancreas, to minute lesions that are difficult to detect by ultrasonic diagnosis from the surface of the body. Development of an ultrasonic endoscope capable of performing ultrasonic guided puncture is desired because it can cope with difficult organs.
これを可能にするこれまでの発明の１つとして特許公開
昭56−158646が有る。これは挿入部の先端部に側面方向
に向けて超音波探触子を設け、この被検査方向に穿刺針
を出没するための穿刺針導出口を超音波探触子に並設
し、さらに穿刺針の角度を調節するガイド機構を設ける
と言うものである。As one of the inventions to date that makes this possible, there is JP-A-56-158646. This is because an ultrasonic probe is provided in the lateral direction at the tip of the insertion part, and a puncture needle outlet for inserting and retracting the puncture needle in the direction to be inspected is arranged in parallel with the ultrasonic probe. A guide mechanism for adjusting the angle of the needle is provided.
また、他の方法として挿入部の先端端面に超音波探触子
と穿刺針導出口，観察光学系の対物レンズ，照明レン
ズ，等をまとめて設けることにより、穿刺針の挿通路を
挿入方向にほぼ沿って設けられるようにし、これにより
穿刺針のスムーズな突出を可能にし、かつ超音波探触子
の超音波走査範囲内に穿刺針を捕らえることができるよ
うにすることも考えられる。As another method, an ultrasonic probe, a puncture needle outlet, an objective lens of an observation optical system, an illumination lens, and the like are collectively provided on the tip end face of the insertion portion, so that the insertion path of the puncture needle is oriented in the insertion direction. It is also conceivable that they are provided substantially along with each other, which allows a smooth protrusion of the puncture needle and allows the puncture needle to be caught within the ultrasonic scanning range of the ultrasonic probe.
［発明が解決しようとする課題］ しかし、これまで超音波ガイド穿刺機能を有する超音波
内視鏡に関する前記の発明は、いずれも実現には問題が
あり具体化されていないのが実情である。[Problems to be Solved by the Invention] However, none of the above-described inventions relating to an ultrasonic endoscope having an ultrasonic guided puncture function have been realized so far and have not been embodied.
例えば超音波内視鏡による超音波ガイド穿刺が有効と見
られる胃内から膵臓を狙う超音波ガイド穿刺では、穿刺
の深さは約3cmは必要である。深さが約3cm必要と言うこ
とは穿刺針の長さも約3cmは必要であると言うことであ
り、真っ直ぐに穿刺できなければならないことからある
程度の剛性をもった物でなくてはならない。For example, in ultrasonically guided puncture aiming at the pancreas from the stomach where ultrasonically guided puncture with an ultrasonic endoscope is considered effective, a puncture depth of about 3 cm is required. The need for a depth of about 3 cm means that the length of the puncture needle also needs to be about 3 cm, and since it must be possible to puncture straightly, it must have a certain degree of rigidity.
剛性を持った長い穿刺針は挿通路が小さな曲率で屈曲し
ていると突っ掛かって挿通不能になる。この為少なくと
も穿刺針の導出口付近の挿通路は曲率の小さい長い挿通
路である必要がある。If the insertion passage is bent with a small curvature, the rigid long puncture needle will be caught and cannot be inserted. Therefore, at least the insertion passage in the vicinity of the outlet of the puncture needle needs to be a long insertion passage having a small curvature.
特許公開昭56−158646の実施例においては、挿入部の先
端部に側面方向に向けて設けた超音波探触子すなわち電
子リニア型の超音波探触子の長手方向に穿刺針の導出口
を並設している。電子リニア型では超音波断層範囲は超
音波探触子の長さで決まってくるので断層範囲を広くす
ると先端部が長くなり人体への挿入が難しくなるため、
約3cm程の超音波探触子を用いるのが一般的である。こ
の約3cm程の超音波探触子の長手方向に穿刺針の導出口
を並設した場合には導出口からさらに長い穿刺針を挿通
できる曲率の小さい長い管路を設けておく必要があり、
前述の例では約3cm程の長い管路となり、先端部の長さ
は全体で少なくとも約6cm以上になってしまい人体への
挿入は極めて難しくなる。また、穿刺針の角度を調節す
るガイド機構等を設けると更に大形化する上、剛性のあ
る穿刺針を屈曲させて角度調整することは実際上極めて
難しく、例え曲げ得たとしても抵抗が大きく挿通不可能
になるのが実情である。また、例えガイド機構が無くと
も挿入部の長軸方向に沿って挿入していく穿刺針を先端
部の側面方向に突出させることは短い長さの中で曲げよ
うとすれば曲率の小さな挿通路となって穿刺針が突っ掛
かり挿通が出来なくなり、また、挿通できるようになだ
らかな傾斜で曲げようとすれば長い挿通路が必要になり
先端が長大化してしまうと言う問題がある。In the example of JP-A-56-158646, the outlet of the puncture needle is provided in the longitudinal direction of the ultrasonic probe, that is, the electronic linear type ultrasonic probe, provided in the distal end portion of the insertion portion in the lateral direction. They are installed side by side. In the electronic linear type, the ultrasonic tomographic range is determined by the length of the ultrasonic probe, so if the tomographic range is widened, the tip becomes longer and it becomes difficult to insert it into the human body.
It is common to use an ultrasonic probe of about 3 cm. When the outlet of the puncture needle is arranged side by side in the longitudinal direction of the ultrasonic probe of about 3 cm, it is necessary to provide a long conduit with a small curvature through which a longer puncture needle can be inserted from the outlet.
In the above example, the length is about 3 cm, and the total length of the tip is at least about 6 cm, which makes insertion into the human body extremely difficult. In addition, if a guide mechanism or the like for adjusting the angle of the puncture needle is provided, the size is further increased, and it is actually extremely difficult to bend the rigid puncture needle to adjust the angle, and even if it can be bent, the resistance is large. The reality is that it cannot be inserted. In addition, even if there is no guide mechanism, it is necessary to make the puncture needle that is inserted along the long axis direction of the insertion part project in the lateral direction of the tip part because it has a small curvature insertion path if it is bent in a short length. Therefore, there is a problem that the puncture needle is caught and cannot be inserted, and if the puncture needle is bent at a gentle inclination so that the puncture needle can be inserted, a long insertion passage is required and the tip becomes long.
更にまた、スムーズな突出を可能にするようになだらか
な角度で突出させるようにした場合、先端部の側面方向
に向けていわゆる電子リニア型の超音波探触子を設けた
のではその超音波走査範囲は側面方向だけであるので、
穿刺針は超音波診断装置の特性として良好な断層像が得
にくい近距離部分を通過し、更に突き進むと走査範囲か
ら外れてしまい穿刺針の位置が良好に把握できなくなる
と言う問題がある。Furthermore, if the projection is made at a gentle angle so as to enable smooth projection, a so-called electronic linear type ultrasonic probe may be provided in the lateral direction of the tip end of the ultrasonic scanning. Since the range is only the lateral direction,
As a characteristic of the ultrasonic diagnostic apparatus, the puncture needle passes through a short-distance portion where it is difficult to obtain a good tomographic image, and when the puncture needle is further advanced, it is out of the scanning range, and the position of the puncture needle cannot be properly grasped.
これに対し、挿入部の先端端面に超音波探触子と穿刺針
導出口，観察光学系の対物レンズ，照明レンズ，等をま
とめて設ける方法では、穿刺針の導出口が先端端面にあ
るのでその挿通路は挿入方向にほぼ沿って設けられるの
で、これにより穿刺針のスムーズな突出を可能にした上
で、超音波走査範囲内に穿刺針を突出させることができ
るが、小さな容積ですむ電子セクタ型超音波探触子でさ
えも約10mm角程の大きさが必要であり、10mm角の対角の
長さは約14mm以上あるので、これに導出口，対物レン
ズ，照明レンズ，を並設すると更に大きく先端部が太径
化して人体への挿入が難しくなると言う問題がある。On the other hand, in the method of collectively providing the ultrasonic probe, the puncture needle outlet, the objective lens of the observation optical system, the illumination lens, etc. on the tip end face of the insertion part, the puncture needle outlet is on the tip end face. Since the insertion passage is provided almost along the insertion direction, this allows the puncture needle to project smoothly and allows the puncture needle to project within the ultrasonic scanning range, but it requires a small volume. Even a sector-type ultrasonic probe requires a size of about 10 mm square, and the diagonal length of a 10 mm square is about 14 mm or more. Therefore, the outlet, the objective lens, and the illumination lens are arranged side by side. If it is installed, there is a problem that the tip portion becomes even larger and the insertion into the human body becomes difficult.
本発明は上記問題を鑑み発明したものであり、先端部を
大形化すること無く、穿刺針をスムーズに突出させるこ
とができ、更に超音波断層像内に良好に穿刺針を確認で
きる超音波ガイド穿刺が可能な超音波内視鏡を提供する
事を目的にしたものである。The present invention has been made in view of the above problems, and the puncture needle can be smoothly projected without enlarging the tip portion, and ultrasonic waves that can confirm the puncture needle satisfactorily in an ultrasonic tomographic image It is intended to provide an ultrasonic endoscope capable of performing guide puncture.
［課題を解決する為の手段］ 本発明の超音波内視鏡の特徴は、細長状の人体挿入部
と、前記人体挿入部の先端部に設けた先端ブロックと、
前記先端ブロックの先端から一側面にかけて多数個の超
音波振動子を凸状に配列した超音波探触子と、前記超音
波探触子の手前の前記超音波探触子の送受信面側に位置
する前記先端ブロックの外表面に設けた少なくとも観察
光学系の対物レンズと照明レンズを有する開口面と、前
記開口面の前記超音波探触子による走査ラインの延長線
上に導出口を有し、前記超音波探触子による超音波走査
面を含む平面に沿ってあけられ、かつ前記開口面と前記
先端ブロックの後端面とを結ぶようにあけられた穿刺針
の挿通路と、を有し、前記超音波探触子はその超音波走
査範囲の先端側が前記挿通路から突出した穿刺針の角度
と同一かそれ以上に前記超音波探触子を設けた逆側面側
に広くなるように設け、前記挿通路は少なくとも挿通さ
せる穿刺針の先端硬質部を収容できる長さを有するよう
にした事である。[Means for Solving the Problems] The ultrasonic endoscope of the present invention is characterized by an elongated human body insertion part, and a tip block provided at the tip part of the human body insertion part.
An ultrasonic probe in which a large number of ultrasonic transducers are arranged in a convex shape from the tip of the tip block to one side surface, and is located on the transmitting / receiving surface side of the ultrasonic probe in front of the ultrasonic probe. An opening surface having at least an objective lens and an illumination lens of an observation optical system provided on the outer surface of the tip block, and an outlet on an extension line of a scanning line by the ultrasonic probe of the opening surface, An insertion path of a puncture needle that is opened along a plane including an ultrasonic scanning surface by an ultrasonic probe, and is formed so as to connect the opening surface and the rear end surface of the tip block, The ultrasonic probe is provided so that the tip side of the ultrasonic scanning range is wider on the opposite side surface where the ultrasonic probe is provided at the same angle as or more than the angle of the puncture needle protruding from the insertion passage, At least the tip of the puncture needle that allows insertion It is it has to have a length that can accommodate the quality unit.
［作用］ 本発明の超音波内視鏡においては、超音波探触子を多数
個の超音波振動子を凸状に配列した、いわゆるコンベッ
クス型の超音波探触子にした事により、いわゆる電子リ
ニア型の超音波探触子に比べ同等あるいはそれ以上の超
音波走査範囲を有した上に超音波探触子部分が短縮化さ
れ、この手前に長い穿刺針を収容できる長い挿通路を並
設しても全体として比較的短い先端部長で広い超音波走
査範囲を有しつつまとめ上げる事ができる。また観察光
学系などの開口面を超音波探触子の手前に設けたことに
より超音波探触子と観察光学系などの内視鏡機能が同一
断面内に存在せず、よって比較的細い径で超音波探触子
と観察光学系などの内視鏡機能が収容される。また穿刺
針挿通路を開口面と先端ブロックの後端面とを結ぶよう
に且つ穿刺針の長さ以上にしたことにより、穿刺針を突
き出すのに大きな抵抗を食うことなく、スムーズに突き
出される。また前記超音波探触子による超音波断層範囲
の先端側端を穿刺針の突出方向と同一かそれ以上に超音
波探触子を設けた逆側面側に広くなるように設けたの
で、穿刺針を刺入していった時に近距離から遠距離まで
穿刺針を超音波断層像内に良好に捕らえることとなる。[Operation] In the ultrasonic endoscope of the present invention, the ultrasonic probe is a so-called convex type ultrasonic probe in which a large number of ultrasonic transducers are arranged in a convex shape. Compared to the linear type ultrasonic probe, it has an ultrasonic scanning range equal to or greater than that of the linear type ultrasonic probe, and the ultrasonic probe part is shortened, and a long insertion passage that can accommodate a long puncture needle is installed in front of this. Even so, it is possible to collect them all while having a relatively short tip length and a wide ultrasonic scanning range. Also, because the opening surface of the observation optical system etc. is provided in front of the ultrasonic probe, the ultrasonic probe and the endoscope function of the observation optical system etc. do not exist in the same cross section, so the diameter is relatively small. The endoscope functions such as the ultrasonic probe and the observation optical system are housed in. Further, since the puncture needle insertion path connects the opening surface and the rear end surface of the tip block and is longer than the length of the puncture needle, the puncture needle is smoothly ejected without a great resistance. Further, since the distal end of the ultrasonic tomographic range by the ultrasonic probe is provided so as to be wider on the side opposite to the ultrasonic probe provided side in the same direction as the protruding direction of the puncture needle or more, When the needle is inserted, the puncture needle can be properly captured in the ultrasonic tomographic image from a short distance to a long distance.
［実施例］ 以下、本発明の一実施例を図面を参照して説明する。[Embodiment] An embodiment of the present invention will be described below with reference to the drawings.
第４図は本発明の全体構成図であり、本装置は先端部1,
湾曲部2,蛇管部３からなる挿入部４と、湾曲操作部5,送
気送水吸引操作部6,チャンネル口7,接眼部8,からなる操
作部９、さらには送気送水吸引管路や信号線が通るコー
ド10,本装置と図示しない超音波観測装置や光源装置と
をつなぐ為のコネクター部11から構成されている。FIG. 4 is an overall configuration diagram of the present invention.
An insertion section 4 including a bending section 2 and a flexible tube section 3, an operation section 9 including a bending operation section 5, an air / water supply / suction operation section 6, a channel opening 7, an eyepiece section 8, and an air / water supply / suction line. And a cord 10 through which a signal line passes, and a connector section 11 for connecting the present apparatus and an ultrasonic observation apparatus or a light source apparatus (not shown).
先端部１の詳細な側面断面図である第１図，同じく平面
図である第２図，第２図のイ矢視図である第３図，によ
り先端部１を説明する。The tip portion 1 will be described with reference to FIG. 1 which is a detailed side sectional view of the tip portion 1, FIG. 2 which is also a plan view thereof, and FIG. 3 which is a view of FIG.
先端部１には先端ブロック12が有り、先端ブロック12の
先端部には多数個の超音波振動子を凸状に配列したいわ
ゆるコンベックス型の超音波探触子13が設けてある。こ
の超音波探触子13の取り付け状態を詳述すると、多数個
の超音波振動子は先端ブロック12の先端から一側面にか
けて凸状に配列してあり、この超音波探触子13による超
音波走査範囲の先端側端（第１図のＡ）は後述する先端
ブロックから突出する穿刺針の突出方向に対し平行（第
１図のＢ）かあるいはそれより広くなるよう、すなわち
先端ブロック12において超音波振動子を配列した前記一
側面の逆側面側方向に向かって広くなるよう、すなわち
第１図の矢印Ｃ方向に広くなるように、設けてある。The tip portion 1 has a tip block 12, and the tip portion of the tip block 12 is provided with a so-called convex type ultrasonic probe 13 in which a large number of ultrasonic transducers are arranged in a convex shape. Explaining the mounting state of the ultrasonic probe 13 in detail, a large number of ultrasonic transducers are arranged in a convex shape from the tip of the tip block 12 to one side surface. The tip side end (A in FIG. 1) of the scanning range is parallel to (B in FIG. 1) or wider than the protruding direction of the puncture needle protruding from the tip block described later, that is, in the tip block 12, It is provided so as to widen in the direction of the side opposite to the one side where the acoustic wave oscillators are arranged, that is, in the direction of arrow C in FIG.
この超音波探触子13の手前の超音波探触子の送受信面側
に位置する先端ブロックの外表面には先端側に行くに従
い深くなるように切り込まれた開口面14が設けてあり、
この開口面14には観察光学系の対物レンズ15と照明レン
ズ16及びレンズ面洗浄等の為の送気送水ノズル17と体腔
内の空気や体液等を吸引する為の吸引口18が設けてあ
る。そして更にこの開口面14の超音波探触子による走査
ライン19の延長線上には穿刺針20を突出させるための穿
刺針挿通路21の導出口22が設けてある。On the outer surface of the tip block located on the transmitting and receiving surface side of the ultrasonic probe before this ultrasonic probe 13, an opening surface 14 is provided that is cut so as to become deeper toward the tip side,
The opening surface 14 is provided with an objective lens 15 of an observation optical system, an illumination lens 16, an air / water supply nozzle 17 for cleaning the lens surface, and a suction port 18 for sucking air or body fluid in the body cavity. . Further, a lead-out port 22 of the puncture needle insertion passage 21 for projecting the puncture needle 20 is provided on the extension line of the scanning line 19 by the ultrasonic probe on the opening surface 14.
この穿刺針挿通路21は先端ブロック12内において超音波
探触子13による超音波走査面35と同一な平面に沿ってあ
けられておりその他端は先端ブロック12の後端面に開口
している。そしてその長さは使用する穿刺針の先端硬質
部23以上の長さを有し真っ直ぐにあけられている。また
先端ブロック12の後端面の開口には可撓性を有する穿刺
針挿通チューブ24が連結されている。25は開口に穿刺針
挿通チューブ24を連結するための連結パイプである。な
お穿刺針挿通路の穿刺針の先端硬質部以上の長さとは、
先端ブロック12内のみにおける長さでなく連結パイプを
含んだ長さであっても良いことは当然である。The puncture needle insertion passage 21 is opened in the tip block 12 along the same plane as the ultrasonic scanning surface 35 of the ultrasonic probe 13, and the other end is opened to the rear end surface of the tip block 12. The length of the puncture needle to be used is equal to or longer than the tip hard portion 23 and is straightened. A flexible puncture needle insertion tube 24 is connected to the opening on the rear end surface of the tip block 12. Reference numeral 25 is a connection pipe for connecting the puncture needle insertion tube 24 to the opening. Note that the length of the puncture needle in the puncture needle insertion passage is equal to or greater than the hard end of the puncture needle.
It goes without saying that the length may be not only the length in the tip block 12 but also the length including the connecting pipe.
26は超音波探触子13の信号ケーブル,27は対物レンズ15
で集光した光を接眼部に伝える像伝送ファイバー束,28
は照明レンズ16を介して体腔内に光を照射するための光
伝送ファイバー束である。なお対物レンズ15等からなる
観察光学系はその視野範囲に突出された穿刺針が入るよ
うに設けてある。29は送気送水ノズル17に連通する送気
送水管路である。30は吸引口18に連通する吸引チャンネ
ルである。なおこの吸引チャンネル30および吸引口18は
穿刺針挿通路を吸引管路として共用することで省略して
も良い。26 is a signal cable of the ultrasonic probe 13, 27 is an objective lens 15
Image transmission fiber bundle that transmits the light condensed by the eyepiece to the eyepiece, 28
Is a light transmission fiber bundle for irradiating light into the body cavity through the illumination lens 16. The observation optical system including the objective lens 15 and the like is provided so that the projected puncture needle enters the visual field range. Reference numeral 29 denotes an air / water supply conduit communicating with the air / water supply nozzle 17. 30 is a suction channel communicating with the suction port 18. The suction channel 30 and the suction port 18 may be omitted by sharing the puncture needle insertion passage as the suction passage.
31は穿刺針20の誤突出を防止するためのストッパーであ
る。このストッパー31は通常は閉鎖状態になっておりス
トッパー解除ワイヤー32を引く事で開放されるようにな
っている。Reference numeral 31 is a stopper for preventing the puncture needle 20 from accidentally protruding. The stopper 31 is normally closed and can be opened by pulling the stopper release wire 32.
33は先端ブロック12を支持し、またこれを多数個連結し
て湾曲管を構成する湾曲コマであり、湾曲操作部５の操
作で図示しないワイヤーを引いたり緩めたりすることで
４方向に湾曲し先端部１を誘導する。34はゴム状弾性体
でできた湾曲部の外被である。Reference numeral 33 is a bending piece that supports the tip block 12 and connects a plurality of pieces to form a bending tube, and bends in four directions by pulling or loosening a wire (not shown) by operating the bending operation section 5. Guide the tip 1. Reference numeral 34 is an outer cover of a curved portion made of a rubber-like elastic body.
以上のように構成された本装置は、人体挿入使用時には
湾曲部が湾曲していることが多く、後から長い穿刺針を
挿入していくことは途中で突っ掛かり難しいので、挿入
前に本装置に挿入し、先端ブロック12内の穿刺針挿通路
21に先端硬質部23を収めておく。人体挿入後光学観察及
び超音波走査を行ない超音波断層内に穿刺すべき目標を
捕らえた後ストッパー解除ワイヤー32を引きストッパー
31を開放し、穿刺針20を押し込み突出させる。突出した
穿刺針は先ず観察光学系の視野に確認された後人体組織
内に刺入され今度は超音波断層像内に確認されることに
なる。そして深く刺入していっても超音波断層範囲の先
端側の端は穿刺針の突出方向以上に広くなっているので
深部においても超音波断層範囲内にしっかりととらえら
れ穿刺針の位置を解任することができる。In the present device configured as described above, the bending portion is often bent when the human body is used for insertion, and it is difficult to insert a long puncture needle afterwards, so it is difficult to insert the device before insertion. Puncture needle insertion passage in the tip block 12
The tip hard portion 23 is stored in 21. After inserting the human body, optical observation and ultrasonic scanning are performed to catch the target to be punctured in the ultrasonic slice, and then the stopper release wire 32 is pulled and the stopper is pulled.
31 is opened, and the puncture needle 20 is pushed in and projected. The protruding puncture needle is first confirmed in the visual field of the observation optical system and then inserted into the human body tissue, and this time, it is confirmed in the ultrasonic tomographic image. And even if the needle is deeply inserted, the end on the tip side of the ultrasonic tomographic range is wider than the protruding direction of the puncture needle, so it is firmly caught within the ultrasonic tomographic range even at the deep part and the position of the puncture needle is dismissed. can do.
尚、上記実施例では穿刺針を使用するものとしたが、こ
れに限定する必要はなく、例えば生検鉗子等の処置具を
使用するものとしても同様の効果が得られる。胃内に水
をいれて行なう胃内脱気水充満法による胃壁の検査にお
いて、胃壁の内部構造を確認したうえでその表面組織を
生検する等の時にも穿刺針の場合と同様な効果を得るこ
とができる。Although the puncture needle is used in the above embodiment, the present invention is not limited to this, and the same effect can be obtained even if a treatment tool such as biopsy forceps is used. In the examination of the stomach wall by the gastric degassed water filling method performed by putting water in the stomach, the same effect as that of the puncture needle can be obtained when biopsying the surface tissue after confirming the internal structure of the stomach wall. Obtainable.
又、本実施例では観察光学系に像伝送ファイバー束を用
いたが、先端にCCD撮像素子を設けたものにしてもよ
く、この場合操作部の接眼部は不要となる。さらにま
た、挿入部に屈曲自在な蛇管部を設けたが、硬質な棒状
部に湾曲部と先端部を連結したものであっても良い。Further, although the image transmission fiber bundle is used for the observation optical system in the present embodiment, a CCD image pickup device may be provided at the tip, and in this case, the eyepiece portion of the operation portion is unnecessary. Furthermore, although the flexible tube portion is provided in the insertion portion, the bending portion and the tip portion may be connected to a hard rod portion.
［発明の効果］ 以上詳述したように、本発明の超音波内視鏡において
は、挿入部先端の先端ブロックにおいて先端から一側面
にかけて多数個の超音波振動子を凸状に配列した超音波
探触子を設けた事により、超音波探触子部分が短縮化さ
れ、この手前に長い穿刺針を収容できる長い挿通路を並
設しても全体として比較的短い先端部長で広い超音波操
作範囲を有しつつまとめ上げる事ができ、観察光学系な
どの開口面を超音波探触子の手前に設けたことにより超
音波探触子と観察光学系などの内視鏡機能が同一断面内
に存在せず、よって比較的細い径で超音波探触子と観察
光学系などの内視鏡機能が収容できる。[Effects of the Invention] As described in detail above, in the ultrasonic endoscope of the present invention, an ultrasonic wave in which a plurality of ultrasonic transducers are arranged in a convex shape from the distal end to one side face in the distal end block of the insertion portion distal end By providing the probe, the ultrasonic probe part is shortened, and even if a long insertion passage that can accommodate a long puncture needle is installed in front of this, the ultrasonic operation is wide with a relatively short tip length. It can be grouped together while having a range, and because the opening surface of the observation optical system etc. is provided in front of the ultrasonic probe, the ultrasonic probe and the endoscope function of the observation optical system etc. are in the same cross section. Therefore, the ultrasonic probe and the endoscope function such as the observation optical system can be accommodated with a relatively small diameter.
また穿刺針挿通路を開口面と先端ブロックの後端面とを
結ぶように且つ穿刺針の長さ以上にしたことにより、穿
刺針を突き出すのに大きな抵抗を食うことなく、スムー
ズに突き出すことができる。また前記超音波探触子によ
る超音波断層範囲の先端側端を穿刺針の突出方向と同一
かそれ以上に超音波探触子を設けた逆側面側に広くなる
ように設けたので、穿刺針を刺入していった時に近距離
から遠距離まで穿刺針を超音波断層像内に良好にとらえ
ることができる。In addition, since the puncture needle insertion path connects the opening surface and the rear end surface of the tip block and is longer than the length of the puncture needle, the puncture needle can be smoothly ejected without incurring great resistance. . Further, since the tip end of the ultrasonic tomographic range by the ultrasonic probe is provided so as to be wider on the side opposite to the ultrasonic probe provided side in the same direction as the protruding direction of the puncture needle or more, When the needle is inserted, the puncture needle can be captured well in the ultrasonic tomographic image from a short distance to a long distance.
したがって、先端部を大形化することなく、穿刺針をス
ムーズに突き出すことができ、さらには穿刺針を超音波
断層像内に良好にとらえることが可能な超音波ガイド穿
刺ができる超音波内視鏡を提供することができることと
なる。Therefore, it is possible to smoothly eject the puncture needle without enlarging the tip portion, and furthermore, it is possible to ultrasonically guide the puncture needle in the ultrasonic tomographic image and perform ultrasonic guided puncture. It will be possible to provide a mirror.
第１図は、本発明の実施例の先端部の詳細な側面断面図
である。 第２図は、本発明の実施例の先端部の詳細な平面図であ
る。 第３図は第２図のイ矢視図である。 第４図は、本発明の実施例の全体構成図である。 12……先端ブロック 13……超音波探触子 14……開口面 21……穿刺針挿通路 22……導出口 23……先端硬質部FIG. 1 is a detailed side sectional view of a tip portion of an embodiment of the present invention. FIG. 2 is a detailed plan view of the tip portion of the embodiment of the present invention. FIG. 3 is a view on arrow A of FIG. FIG. 4 is an overall configuration diagram of an embodiment of the present invention. 12 …… Tip block 13 …… Ultrasonic probe 14 …… Opening surface 21 …… Puncture needle insertion passage 22 …… Outlet port 23 …… Hard tip section
Claims (1)
と、前記人体挿入部の先端部に設けた先端ブロックと、
前記先端ブロックの先端から一側面にかけて多数個の超
音波振動子を凸状に配列した超音波探触子と、前記超音
波探触子の手前の前記超音波探触子の送受信面側に位置
する前記先端ブロックの外表面に設けた少なくとも観察
光学系の対物レンズと照明レンズを有する開口面と、前
記開口面の前記超音波探触子による走査ラインの延長線
上に導出口を有し、前記超音波探触子による超音波走査
面を含む平面に沿ってあけられ、かつ前記開口面と前記
先端ブロックの後端面とを結ぶように前記先端ブロック
内に形成された穿刺針の挿通路と、を有し、前記超音波
探触子はその超音波走査範囲の先端側端が前記挿通路か
ら突出した穿刺針の角度と同一かそれ以上に前記超音波
探触子を設けた逆側面側に広くなるように設け、前記挿
通路は少なくとも挿通させる穿刺針の先端硬質部を収容
できる長さを有する事を特徴とする超音波内視鏡。1. An elongated human body insertion portion having a bendable portion, and a tip block provided at a tip portion of the human body insertion portion,
An ultrasonic probe in which a large number of ultrasonic transducers are arranged in a convex shape from the tip of the tip block to one side surface, and is located on the transmitting / receiving surface side of the ultrasonic probe in front of the ultrasonic probe. An opening surface having at least an objective lens and an illumination lens of an observation optical system provided on the outer surface of the tip block, and an outlet on an extension line of a scanning line by the ultrasonic probe of the opening surface, An insertion path of a puncture needle formed in the tip block so as to connect the opening surface and the rear end surface of the tip block, which is opened along a plane including an ultrasonic scanning surface by an ultrasonic probe, The ultrasonic probe has an ultrasonic scanning range on the side opposite to the side where the distal end of the ultrasonic scanning range is equal to or greater than the angle of the puncture needle protruding from the insertion passage. It is provided to be wide, and the insertion passage is at least An ultrasonic endoscope, characterized in that it has a length to accommodate the distal end rigid portion of the puncture needle to pass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63110175A JPH0747027B2 (en) | 1988-05-06 | 1988-05-06 | Ultrasound endoscope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63110175A JPH0747027B2 (en) | 1988-05-06 | 1988-05-06 | Ultrasound endoscope |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01280446A JPH01280446A (en) | 1989-11-10 |
| JPH0747027B2 true JPH0747027B2 (en) | 1995-05-24 |
Family
ID=14528951
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63110175A Expired - Lifetime JPH0747027B2 (en) | 1988-05-06 | 1988-05-06 | Ultrasound endoscope |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0747027B2 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2720737B2 (en) * | 1992-12-03 | 1998-03-04 | 松下電器産業株式会社 | Ultrasonic probe |
| JP2004113334A (en) * | 2002-09-25 | 2004-04-15 | Aloka Co Ltd | Ultrasonic search unit |
| US8285362B2 (en) | 2007-06-28 | 2012-10-09 | W. L. Gore & Associates, Inc. | Catheter with deflectable imaging device |
| US8852112B2 (en) | 2007-06-28 | 2014-10-07 | W. L. Gore & Associates, Inc. | Catheter with deflectable imaging device and bendable electrical conductor |
| JP5437178B2 (en) * | 2010-06-28 | 2014-03-12 | オリンパスメディカルシステムズ株式会社 | Ultrasound endoscope and insertion aid |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2543817B1 (en) * | 1983-04-06 | 1986-06-27 | Rabelais Universite Francois | ENDOSCOPIC ULTRASOUND SCANNING AND ULTRASONIC ULTRASOUND PROBE |
| JPS6075043A (en) * | 1983-09-30 | 1985-04-27 | オリンパス光学工業株式会社 | Ultrasonic diagnostic apparatus |
| JPH0693893B2 (en) * | 1985-04-23 | 1994-11-24 | オリンパス光学工業株式会社 | Intracorporeal ultrasound diagnostic device |
| JPS6258255A (en) * | 1985-08-09 | 1987-03-13 | Konishiroku Photo Ind Co Ltd | Method for processing photosensitive lithographic plate |
| US4742829A (en) * | 1986-08-11 | 1988-05-10 | General Electric Company | Intracavitary ultrasound and biopsy probe for transvaginal imaging |
| JPS63150058A (en) * | 1986-12-15 | 1988-06-22 | 株式会社 日立メデイコ | Ultrasonic probe for body cavity |
-
1988
- 1988-05-06 JP JP63110175A patent/JPH0747027B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01280446A (en) | 1989-11-10 |
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