JPH0320243B2 - - Google Patents
Info
- Publication number
- JPH0320243B2 JPH0320243B2 JP57144558A JP14455882A JPH0320243B2 JP H0320243 B2 JPH0320243 B2 JP H0320243B2 JP 57144558 A JP57144558 A JP 57144558A JP 14455882 A JP14455882 A JP 14455882A JP H0320243 B2 JPH0320243 B2 JP H0320243B2
- Authority
- JP
- Japan
- Prior art keywords
- treatment instrument
- endoscope
- guide
- main body
- distal end
- 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
Links
- 230000003287 optical effect Effects 0.000 claims description 25
- 230000005540 biological transmission Effects 0.000 claims description 13
- 230000037431 insertion Effects 0.000 claims description 10
- 238000003780 insertion Methods 0.000 claims description 10
- 238000005286 illumination Methods 0.000 claims description 5
- 238000003860 storage Methods 0.000 claims description 5
- 229920003002 synthetic resin Polymers 0.000 claims description 4
- 239000000057 synthetic resin Substances 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims 1
- 238000005452 bending Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 238000005219 brazing Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000002183 duodenal effect Effects 0.000 description 1
- 210000001198 duodenum Anatomy 0.000 description 1
- 230000009191 jumping Effects 0.000 description 1
- 229920002492 poly(sulfone) Polymers 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/00064—Constructional details of the endoscope body
- A61B1/00071—Insertion part of the endoscope body
- A61B1/0008—Insertion part of the endoscope body characterised by distal tip features
- A61B1/00098—Deflecting means for inserted tools
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Surgery (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Biomedical Technology (AREA)
- Optics & Photonics (AREA)
- Pathology (AREA)
- Radiology & Medical Imaging (AREA)
- Biophysics (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Endoscopes (AREA)
Description
【発明の詳細な説明】
この発明はたとえばカテーテル、鉗子などの処
置具を誘導する処置具誘導機能を改良した内視鏡
に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an endoscope with an improved function of guiding a treatment tool such as a catheter or forceps.
内視鏡の処置具チヤンネルに挿通したカテーテ
ルや鉗子など処置具の先端を体腔内の所望部位に
誘導する装置として、挿入部の先端部本体に処置
具誘導子を設けたものが知られている。この処置
具誘導機能を備えた内視鏡は、従来、第１図およ
び第２図に示すように構成されている。すなわ
ち、１は先端部本体で、この先端部本体１の一側
には像伝達光学系２、照明光伝達光学系３が設け
られ、他側には処置具誘導子収容室４の処置具突
出窓５が設けられている。そして、上記処置具誘
導子収容室４内には回転軸６を軸心として回動自
在な処置具誘導子７が設けられ、この処置具誘導
子７は手元操作部（図示しない。）と接続する操
作ワイヤ８によつて回動すなわち起上、倒伏され
るようになつている。 As a device for guiding the tip of a treatment tool such as a catheter or forceps inserted through the treatment tool channel of an endoscope to a desired site in a body cavity, there is a known device in which a treatment tool guide is provided in the main body of the tip end of the insertion section. . An endoscope equipped with this treatment instrument guiding function has conventionally been constructed as shown in FIGS. 1 and 2. That is, 1 is a distal end main body, on one side of this distal end main body 1, an image transmission optical system 2 and an illumination light transmission optical system 3 are provided, and on the other side, a treatment instrument protrusion of a treatment instrument guider storage chamber 4 is provided. A window 5 is provided. A treatment instrument guide 7 that is rotatable about a rotating shaft 6 is provided in the treatment instrument guide housing chamber 4, and the treatment instrument guide 7 is connected to a hand-held operation unit (not shown). It is designed to be rotated, that is, raised and lowered by an operating wire 8.
ところで、上記処置具突出窓５の外側の開口縁
９はその高さが上記像伝達光学系２の第１レンズ
１０とほぼ同一になつており、また、処置具誘導
子７のあおり、製造上の寸法誤差等を考慮して安
定作動を図るために処置具誘導子７と処置具誘導
子収容室４の内壁との間に隙間ｔを形成してい
る。したがつて、処置具誘導子７を倒状した状態
で、その誘導溝１１に沿つてカテーテルなどの処
置具１２を導入しようとすると、その処置具１２
が上記隙間ｔに落ち込んでしまう。この状態で、
処置具誘導子７を起上すると、処置具１２が第３
図で示すように視野１３の中で目的部位を狙撃し
ようとするところに弓状に撓められるが、このと
き処置具１２に蓄つた弾性反発力により上記処置
具１２が処置具誘導子７の誘導溝１１にジヤンプ
するという現象が起る。このため、処置具１２の
目的部位への狙撃操作が中断してしまい正確かつ
迅速な処置を必要とする医療の場において重要な
不具合となつている。 Incidentally, the height of the outer opening edge 9 of the treatment instrument projecting window 5 is almost the same as that of the first lens 10 of the image transmission optical system 2, and the tilting of the treatment instrument guide 7 and manufacturing A gap t is formed between the treatment instrument guide 7 and the inner wall of the treatment instrument guide accommodating chamber 4 in order to ensure stable operation in consideration of dimensional errors and the like. Therefore, when a treatment instrument 12 such as a catheter is introduced along the guide groove 11 with the treatment instrument guide 7 in an inverted state, the treatment instrument 12
falls into the gap t. In this state,
When the treatment instrument guide 7 is raised, the treatment instrument 12 is moved to the third position.
As shown in the figure, the treatment tool 12 is bent in an arcuate manner when trying to aim at the target area within the field of view 13, but at this time, the treatment tool 12 is deflected by the elastic repulsive force accumulated in the treatment tool A phenomenon of jumping to the guide groove 11 occurs. For this reason, the aiming operation of the treatment instrument 12 toward the target site is interrupted, which is an important problem in medical settings where accurate and prompt treatment is required.
この発明は上記事情に着目してなされたもの
で、その目的とするところは、処置具誘導子の安
定作動を確保するために処置具誘導子と処置具突
出窓の開口縁との間に隙間を設けてもこの隙間に
処置具が落込むことがなく、処置具を上記開口縁
と処置具誘導子の誘導溝によつて確実に誘導する
ことができ、処置具を目的位置に正確かつ迅速に
誘導することができる内視鏡を提供しようとする
ものである。 This invention was made in view of the above-mentioned circumstances, and its purpose is to ensure that there is no gap between the treatment instrument guide and the opening edge of the treatment instrument protrusion window in order to ensure stable operation of the treatment instrument guide. The treatment tool will not fall into this gap even if a The aim is to provide an endoscope that can guide the
以下、この発明を図面に示す一実施例にもとづ
いて説明する。第４図ないし第９図中２１は内視
鏡の挿入部で、ゴム、合成樹脂からなる電気絶縁
性の外被におおわれており、また、この先端には
先端部本体２２が設けられている。この先端部本
体２２は本体２３とこの本体２３に嵌着されたカ
バー２４とから構成されている。このカバー２４
はエポキシ、ポリカーボネイト、ポリサルホンな
どの合成樹脂材料によつて成形されており、上記
本体２３の平坦面２５と対応する開口部２６が設
けられている。また、上記本体２３の平坦面２５
における操作部側から見て右側には処置具誘導子
収容室２７が設けられ、左側には先端側から順に
照明光伝達光学系２８、像伝達光学系２９の光学
部材２８ａ，２９ａが設けられている。なお、こ
れら光学部材２８ａ，２９ａの外表面は上記平坦
面２５とほぼ同一面であるが、窪みに水滴が溜ら
ないように0.2〜0.4mm程度、上記平坦面２５より
突出している場合もある。さらに、上記処置具誘
導子収容室２７は本体２３の垂直線ａより内方へ
角度αだけ傾斜しており、この底部には処置具誘
導子３０の一端部が支軸３１にによつて回動自在
に枢着されている。この処置具誘導子３０は側面
から見て先端側が広幅となるほぼ扇状をなしてお
り、その上面には凹円弧状の誘導溝３２が設けら
れている。さらに、この処置具誘導子３０の自由
端部には取付孔３３が穿設されていて、この取付
孔３３の両開口縁には回転リング３４ａ，３４ｂ
が回転自在に嵌合している。そして、この一方の
回転リング３４ａには操作ワイヤ３５が貫通し、
その先端は他方の回転リング３４ｂにろう付け等
によつて固着されている。また、この操作ワイヤ
３５は処置具誘導子３０の外側面において折曲さ
れ、上記本体２３に穿設した通孔３６および挿入
部２１に内装されたガイドパイプ３７を貫通して
操作部（図示しない）に接続されている。さら
に、上記処置具誘導子３０には取付孔３３と隣接
して外側面から突出するストッパピン３８が突設
されており、このストッパピン３８の回動軌跡上
における下端には本体２３を切欠して形成した下
端衝止部３９が設けられ、上端には本体２３に対
して螺挿した調節ねじからなる上端衝止部４０が
設けられている。したがつて、操作ワイヤ３５に
よつて回動される処置具誘導子３０はストッパピ
ン３８と衝止する下端衝止部３９と上端衝止部４
０とによつて回動範囲が規制され、倒伏時は下端
衝止部３９に、起上時は上端衝止部４０にそれぞ
れ衝止するようになつている。そして、処置具誘
導子３０を収容する上記処置具誘導子収容室２７
は本体２３の軸方向に穿設した貫通路４１を介し
て挿入部２１に内装された処置具チヤンネル４２
に連通している。この貫通路４１の上部には本体
２３を円弧状に切欠することにより形成した処置
具誘導子収容室後壁４３が設けられ、この円弧面
で処置具曲げ支点４４を形成している。 The present invention will be described below based on an embodiment shown in the drawings. Reference numeral 21 in FIGS. 4 to 9 indicates the insertion portion of the endoscope, which is covered with an electrically insulating outer cover made of rubber or synthetic resin, and a tip main body 22 is provided at the tip. . The tip main body 22 is composed of a main body 23 and a cover 24 fitted to the main body 23. This cover 24
is molded from a synthetic resin material such as epoxy, polycarbonate, or polysulfone, and is provided with an opening 26 that corresponds to the flat surface 25 of the main body 23. Further, the flat surface 25 of the main body 23
A treatment tool guide housing chamber 27 is provided on the right side when viewed from the operating section side, and optical members 28a and 29a of an illumination light transmission optical system 28 and an image transmission optical system 29 are provided on the left side in order from the distal end side. There is. The outer surfaces of these optical members 28a and 29a are substantially flush with the flat surface 25, but may protrude from the flat surface 25 by about 0.2 to 0.4 mm to prevent water droplets from accumulating in the recesses. Further, the treatment instrument guide storage chamber 27 is inclined inwardly at an angle α from the vertical line a of the main body 23, and one end of the treatment instrument guide 30 is mounted at the bottom of the chamber 27 and rotated by the support shaft 31. It is pivoted for free movement. The treatment instrument guide 30 has a generally fan-like shape with a wider tip end when viewed from the side, and a concave arc-shaped guide groove 32 is provided on its upper surface. Further, a mounting hole 33 is bored in the free end of the treatment instrument guide 30, and rotating rings 34a, 34b are formed at both opening edges of the mounting hole 33.
are rotatably fitted. An operating wire 35 passes through this one rotating ring 34a,
Its tip is fixed to the other rotating ring 34b by brazing or the like. The operating wire 35 is bent at the outer surface of the treatment instrument guide 30, passes through a through hole 36 formed in the main body 23 and a guide pipe 37 installed in the insertion section 21, and passes through the operating section (not shown). )It is connected to the. Further, a stopper pin 38 protrudes from the outer surface adjacent to the attachment hole 33 on the treatment instrument guide 30, and the main body 23 is cut out at the lower end of the stopper pin 38 on its rotation trajectory. A lower end stop portion 39 is provided at the upper end, and an upper end stop portion 40 is provided at the upper end, which is an adjustment screw screwed into the main body 23. Therefore, the treatment instrument guide 30 rotated by the operating wire 35 has a lower end stopper 39 that hits the stopper pin 38 and an upper end stopper 4.
The range of rotation is restricted by 0, and when it is laid down, it hits the lower end stopper 39, and when it is raised, it hits the upper end stopper 40. The treatment instrument inductor storage chamber 27 accommodates the treatment instrument inductor 30.
A treatment instrument channel 42 is installed inside the insertion section 21 via a through passage 41 bored in the axial direction of the main body 23.
is connected to. A treatment instrument guide chamber rear wall 43 is provided above the through passage 41 and is formed by cutting out the main body 23 in an arc shape, and this arcuate surface forms a treatment instrument bending fulcrum 44 .
さらに、上記カバー２４には処置具誘導子収容
室２７と対応する処置具突出窓４５が設けられて
いる。この処置具突出窓４５の上記光学部材２８
ａ，２９ａと反対軸の開口縁４６すなわち操作部
側から見て右側は、先端側からなだらかに光学部
材２８ａ，２９ａの外表面より高く盛り上がつて
おり、この盛り上がり程度は先端部本体２２を中
心軸に直交しかつ上記光学部材２８ａ，２９ａの
外表面に含まれる方向から見たとき上記処置具誘
導子３０が起上位置においてもほぼ隠れる高さに
形成されている。また、このカバー２４の開口縁
４６における内面４７は上記処置具誘導子３０と
隙間ｔを介して対向しており、その上端部は平面
４７ａに、中途部は円錐面４７ｂに形成されてい
る。そして、この円錐面４７ｂによつても上記処
置具誘導子３０から突出する操作ワイヤ３５およ
びストッパピン３８の逃げ部を形成するととも
に、処置具が曲がりぐせ等により挿通途中で横方
向にずれてきた場合にも滑らかにガイドして内視
鏡を貫通させる機能を果す。なお、上記処置具誘
導子３０とカバー２４の内面４７との間の隙間ｔ
は、処置具誘導子３０のあおりおよびカバー２４
の製造上の公差さらに組立上の誤差を考慮して最
大0.6mm程度に設定されていて、処置具誘導子３
０が安定した作動を行なうようになつている。 Further, the cover 24 is provided with a treatment instrument protrusion window 45 corresponding to the treatment instrument guide housing chamber 27 . The optical member 28 of this treatment instrument protruding window 45
The opening edge 46 on the opposite axis to a, 29a, that is, the right side when viewed from the operating section side, is gently raised higher than the outer surface of the optical members 28a, 29a from the tip side, and the extent of this swell is higher than the tip main body 22. When viewed from a direction perpendicular to the central axis and included in the outer surfaces of the optical members 28a, 29a, the treatment instrument guide 30 is formed at a height that is almost hidden even in the raised position. Further, an inner surface 47 of the opening edge 46 of the cover 24 faces the treatment instrument guide 30 with a gap t interposed therebetween, and its upper end is formed into a flat surface 47a, and its midway portion is formed into a conical surface 47b. This conical surface 47b also forms a relief part for the operating wire 35 and stopper pin 38 that protrude from the treatment instrument guide 30, and also prevents the treatment instrument from shifting laterally during insertion due to bending or the like. It also functions to smoothly guide the endoscope through the endoscope. Note that the gap t between the treatment instrument guide 30 and the inner surface 47 of the cover 24
is the tilt of the treatment instrument guide 30 and the cover 24
Considering manufacturing tolerances and assembly errors, it is set to a maximum of about 0.6 mm, and the treatment instrument inductor 3
0 for stable operation.
しかして、内視鏡の挿入部２１を体腔内に挿入
した状態において、その操作部（図示しない）か
らカテーテルまたは鉗子等の処置具４８を挿入す
ると、処置具４８は処置具チヤンネル４２を挿通
し、先端部本体２２の貫通路４１を介して処置具
誘導子３０に導びかれる。この処置具誘導子３０
には処置具４８を案内する誘導溝３２が設けられ
ているため、処置具４８は、誘導溝３２を摺動し
ながら前進し、その先端は第９図実線で示すよう
に処置具突出窓４５から突出する。この状態にお
いて、操作部（図示しない）の操作によつて操作
ワイヤ３５を引くと、処置具誘導子３０は支軸３
１を支点として回動して起上し、操作ワイヤ３５
を押すと処置具誘導子３０は倒伏する。したがつ
て、操作ワイヤ３５の押し引き操作によつて処置
具誘導子３０を倒伏、起上でき、その誘導溝３２
に沿つて挿入された処置具４８を彎曲して任意な
方向に指向させることができる。このとき、処置
具４８は処置具突出窓４５の開口縁４６にその側
面を摺接しながら移動するため、起上途中に第９
図２点鎖線で示すように処置具４８が隙間ｔに落
ち込むことはなく誘導溝３２と開口縁４６とによ
つてコントロールされ、目的部位への狙撃が正確
かつ迅速に行なえる。 When the insertion section 21 of the endoscope is inserted into the body cavity, when a treatment tool 48 such as a catheter or forceps is inserted from the operating section (not shown), the treatment tool 48 passes through the treatment tool channel 42. , is guided to the treatment instrument guide 30 via the through passage 41 of the distal end main body 22. This treatment instrument inductor 30
Since the treatment instrument 48 is provided with a guide groove 32 for guiding the treatment instrument 48, the treatment instrument 48 moves forward while sliding in the guide groove 32, and its tip reaches the treatment instrument protruding window 45 as shown by the solid line in FIG. protrude from In this state, when the operating wire 35 is pulled by operating the operating section (not shown), the treatment instrument guide 30 is moved from the support shaft 3.
1 as a fulcrum and lift up the operation wire 35.
When is pressed, the treatment instrument guide 30 is brought down. Therefore, the treatment instrument guide 30 can be lowered and raised by pushing and pulling the operation wire 35, and the guide groove 32 can be lowered and raised.
The treatment instrument 48 inserted along can be curved and directed in any direction. At this time, the treatment instrument 48 moves while sliding its side surface against the opening edge 46 of the treatment instrument protruding window 45.
As shown by the two-dot chain line in FIG. 2, the treatment tool 48 does not fall into the gap t, but is controlled by the guide groove 32 and the opening edge 46, so that the target area can be targeted accurately and quickly.
したがつて、この効果は逆行性膵胆管造影を主
目的とする十二指腸スコープの場合に特に顕著で
ある。すなわち、第１０図に示すように、十二指
腸４９の後壁よりにある膵胆管開口部（十二指腸
乳頭）５０に内視鏡の先端部本体２２における像
伝達光学系２９の光学部材２９ａを正しく対向さ
せるためにいわゆるアツプ彎曲の他にライト彎曲
を同時にかけるとPQの距離が反対側のRSより短
かくなるので、先端部本体２２が中心軸まわりに
操作部側から見て反時計まわりにねじれ、正しく
膵胆管開口部５０に対向する。このため、処置具
４８は必ず処置具突出窓４８の開口縁４６に弾性
的に強く当るので、このとき従来は処置具４８が
隙間ｔに落ち込んだが、この発明の開口縁４６は
盛り上がつているために、この点が解決された。 Therefore, this effect is particularly noticeable in the case of a duodenoscope whose main purpose is retrograde pancreaticochleangiography. That is, as shown in FIG. 10, the optical member 29a of the image transmission optical system 29 in the distal end body 22 of the endoscope is correctly opposed to the pancreaticobiliary duct opening (duodenal papilla) 50 located on the rear wall of the duodenum 49. Therefore, if a right curve is applied in addition to the so-called up curve at the same time, the distance of PQ will be shorter than the RS on the opposite side, so the tip main body 22 will be twisted counterclockwise around the central axis when viewed from the operating unit side, and it will not rotate properly. It faces the pancreaticobiliary opening 50. For this reason, the treatment instrument 48 always elastically strongly hits the opening edge 46 of the treatment instrument protruding window 48, and at this time, conventionally the treatment instrument 48 fell into the gap t, but the opening edge 46 of the present invention is raised. This issue has been resolved because of this.
また、処置具突出窓４５の開口縁４６は、その
先端部からなだらかに盛り上がつているととも
に、本体２３の基部断面形状よりも外方へ突出し
ていないので、体腔壁に傷を付けるおそれはな
く、また、開口縁４６が照明光伝達光学系２８、
像伝達光学系２９とは離れているので光を遮ぎる
ことがない。 Further, the opening edge 46 of the treatment instrument protruding window 45 is gently raised from its tip and does not protrude outward beyond the cross-sectional shape of the base of the main body 23, so there is no risk of damaging the body cavity wall. In addition, the opening edge 46 is connected to the illumination light transmission optical system 28,
Since it is separated from the image transmission optical system 29, the light is not blocked.
さらに、本体２３を覆うカバー２４は合成樹脂
材料によつて形成され、このカバー２４に一体に
開口縁４６が設けられているため、処置具誘導子
３０と体腔壁との間を電気的に絶縁する能力が高
まり、処置具４８のアクテイブ電極が患者に触れ
ていずに、処置具誘導子３０が体腔壁に触れてい
るときに誤つて高周波電流の通電が行なわれ、処
置具４８から内視鏡にもれた高周波電流により上
記処置具誘導子３０の体腔壁への接触点において
体腔壁に火傷させるという従来の不都合が解消さ
れた。 Further, the cover 24 covering the main body 23 is made of a synthetic resin material, and the cover 24 is integrally provided with an opening edge 46, thereby electrically insulating between the treatment instrument guide 30 and the body cavity wall. When the active electrode of the treatment instrument 48 is not touching the patient and the treatment instrument inductor 30 is touching the body cavity wall, high-frequency current is erroneously applied, and the endoscope is removed from the treatment instrument 48. The conventional inconvenience of causing burns to the body cavity wall at the contact point of the treatment instrument inductor 30 to the body cavity wall due to the leaked high-frequency current is eliminated.
この発明は以上説明したように、処置具突出窓
の開口縁を処置具誘導子が起上位置においてもほ
ぼ隠れる高さに構成したから、処置具誘導子と処
置具突出窓の開口縁との間に隙間を設けてもこの
隙間に処置具が落ち込むことはなく、処置具を上
記開口縁と処置具誘導子の誘導溝によつて確実に
誘導することができ、処置具を目的部位に正確か
つ迅速に誘導することができる。しかも、処置具
誘導子は起上位置においても片側が開口縁で覆わ
れているために、処置具誘導子が体腔壁にくい込
むことはなく、内視鏡を前後動させても体腔壁を
傷つけることがないという効果がある。 As explained above, in this invention, the opening edge of the treatment instrument protrusion window is configured to a height that allows the treatment instrument guide to be almost hidden even in the raised position, so that the treatment instrument guide and the opening edge of the treatment instrument protrusion window are connected to each other. Even if a gap is provided between them, the treatment instrument will not fall into this gap, and the treatment instrument can be reliably guided by the opening edge and the guide groove of the treatment instrument guide, allowing the treatment instrument to be accurately guided to the target area. and can be guided quickly. Furthermore, since one side of the treatment instrument guide is covered by the opening edge even in the raised position, the treatment instrument guide will not sink into the body cavity wall, and will not damage the body cavity wall even if the endoscope is moved back and forth. It has the effect of never happening.
第１図は従来の内視鏡の先端部本体を示す平面
図、第２図は同じく一部を切欠して示す斜視図、
第３図は同じく作用説明図、第４図はこの発明の
一実施例を示す先端部本体の平面図、第５図は第
４図−線に沿う断面図、第６図は第４図−
線に沿う断面図、第７図は第６図−線に沿
う断面図、第８図は同じく先端部本体の半横断面
図、第９図は同じく作用を説明するための先端部
本体の半黄断面図、第１０図は同じく作用説明図
である。
２１……挿入部、２２……先端部本体、２７…
…処置具誘導子収容室、２８……照明光伝達光学
系、２９……像伝達光学系、２８ａ，２９ａ……
光学部材、３０……処置具誘導子、４５……処置
具突出窓、４６……開口縁、４８……処置具。
FIG. 1 is a plan view showing the main body of the distal end of a conventional endoscope; FIG. 2 is a partially cutaway perspective view;
3 is an explanatory view of the operation, FIG. 4 is a plan view of the tip main body showing an embodiment of the present invention, FIG. 5 is a sectional view taken along the line of FIG. 4, and FIG.
7 is a cross-sectional view taken along the line of FIG. 6, FIG. 8 is a half cross-sectional view of the tip body, and FIG. 9 is a half cross-sectional view of the tip body for explaining the action. The yellow sectional view and FIG. 10 are also explanatory views of the operation. 21... Insertion section, 22... Tip body, 27...
...Treatment instrument guide storage chamber, 28...Illumination light transmission optical system, 29...Image transmission optical system, 28a, 29a...
Optical member, 30... Treatment instrument guide, 45... Treatment instrument protruding window, 46... Opening edge, 48... Treatment instrument.
Claims (1)
を収容するとともに、後壁に処置具チヤンネルが
開口する処置具誘導子収容室の処置具突出窓と像
伝達光学系の光学部材とをほぼ上記先端部本体の
軸と直交する方向に配設した内視鏡において、上
記処置具突出窓の上記光学部材と反対側の開口縁
を、上記光学部材の外表面より高くするととも
に、先端部本体を中心軸に直交しかつ上記光学部
材の外表面に含まれる方向から見たとき処置具誘
導子が起上位置においてもほぼ隠れる高さに構成
したことを特徴とする内視鏡。 ２ 特許請求の範囲第１項において、処置具突出
窓の開口縁は、先端部本体の基部の横断面形状よ
り外方に突出していないことを特徴とする内視
鏡。 ３ 特許請求の範囲第１項において、処置具突出
窓の開口縁は、ほぼ処置具突出窓、像伝達光学系
および照明光伝達光学系の光学部材のみを露出し
て先端部本体を覆うとともに、挿入部の他の外被
と一体となつて挿入部および先端部本体の金属体
を包み込む合成樹脂製カバーの一部として形成し
たことを特徴とする内視鏡。[Scope of Claims] 1. A treatment tool guide is housed on one side of the main body of the distal end of the insertion section, and image transmission with the treatment tool protruding window of the treatment tool guide storage chamber in which the treatment tool channel is opened in the rear wall. In an endoscope in which an optical member of an optical system is disposed in a direction substantially perpendicular to the axis of the distal end main body, the opening edge of the treatment instrument protruding window on the opposite side from the optical member is connected to the outer surface of the optical member. In addition, the distal end main body is configured at a height that is perpendicular to the central axis and such that the treatment instrument guide is almost hidden even in the raised position when viewed from a direction included in the outer surface of the optical member. endoscope. 2. The endoscope according to claim 1, wherein the opening edge of the treatment instrument protruding window does not protrude outward from the cross-sectional shape of the base of the distal end body. 3. In claim 1, the opening edge of the treatment instrument protrusion window covers the tip body, exposing only the optical members of the treatment instrument protrusion window, the image transmission optical system, and the illumination light transmission optical system, and 1. An endoscope characterized in that the endoscope is formed as a part of a synthetic resin cover that is integrated with the other outer cover of the insertion section and wraps around the insertion section and the metal body of the distal end body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57144558A JPS5934239A (en) | 1982-08-20 | 1982-08-20 | Endoscope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57144558A JPS5934239A (en) | 1982-08-20 | 1982-08-20 | Endoscope |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2203575A Division JPH0390126A (en) | 1990-07-31 | 1990-07-31 | Endoscope |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5934239A JPS5934239A (en) | 1984-02-24 |
| JPH0320243B2 true JPH0320243B2 (en) | 1991-03-19 |
Family
ID=15365054
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57144558A Granted JPS5934239A (en) | 1982-08-20 | 1982-08-20 | Endoscope |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5934239A (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60148536A (en) * | 1984-01-17 | 1985-08-05 | オリンパス光学工業株式会社 | Endoscope |
| JPS6165902U (en) * | 1984-10-02 | 1986-05-06 | ||
| JPH027525Y2 (en) * | 1985-01-25 | 1990-02-22 | ||
| JPH0665333B2 (en) * | 1985-04-19 | 1994-08-24 | オリンパス光学工業株式会社 | Endoscope |
| JPS626716U (en) * | 1985-06-28 | 1987-01-16 | ||
| JPH046728Y2 (en) * | 1986-05-13 | 1992-02-24 | ||
| JPH0422722Y2 (en) * | 1987-08-19 | 1992-05-26 | ||
| JPH074004Y2 (en) * | 1988-04-30 | 1995-02-01 | オリンパス光学工業株式会社 | Endoscope |
| JPH02119833A (en) * | 1989-08-07 | 1990-05-07 | Olympus Optical Co Ltd | Endoscope |
| JP3210404B2 (en) | 1992-04-15 | 2001-09-17 | 株式会社町田製作所 | Optical fiber binding device |
| JP5932407B2 (en) * | 2012-03-09 | 2016-06-08 | Hoya株式会社 | Endoscope equipped with a treatment tool elevator |
| WO2019150603A1 (en) * | 2018-01-31 | 2019-08-08 | オリンパス株式会社 | Insertion device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5413295B2 (en) * | 1974-03-08 | 1979-05-30 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5413295U (en) * | 1977-06-30 | 1979-01-27 | ||
| JPS5850883Y2 (en) * | 1979-04-09 | 1983-11-19 | オリンパス光学工業株式会社 | Treatment instrument guiding device in endoscope |
-
1982
- 1982-08-20 JP JP57144558A patent/JPS5934239A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5413295B2 (en) * | 1974-03-08 | 1979-05-30 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5934239A (en) | 1984-02-24 |
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