JP2003052619A - Endoscope - Google Patents
EndoscopeInfo
- Publication number
- JP2003052619A JP2003052619A JP2001245513A JP2001245513A JP2003052619A JP 2003052619 A JP2003052619 A JP 2003052619A JP 2001245513 A JP2001245513 A JP 2001245513A JP 2001245513 A JP2001245513 A JP 2001245513A JP 2003052619 A JP2003052619 A JP 2003052619A
- Authority
- JP
- Japan
- Prior art keywords
- specific gravity
- endoscope
- gravity adjusting
- adjusting body
- insertion portion
- 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.)
- Withdrawn
Links
Landscapes
- Endoscopes (AREA)
- Instruments For Viewing The Inside Of Hollow Bodies (AREA)
Abstract
Description
【０００１】[0001]
【技術分野】本発明は、可撓性を有する挿入部を備えた
内視鏡に関する。TECHNICAL FIELD The present invention relates to an endoscope having a flexible insertion portion.
【０００２】[0002]
【従来技術及びその問題点】側視式の内視鏡では、例え
ば、処置具挿通チャンネルに挿入した鉗子（処置具）を
用いてカニュレーション等を行う際に、挿入部の先端
で、挿入方向に対する側方へ鉗子を突出させるために鉗
子起上操作を行う。一方、屈曲した経路の観察対象内へ
の挿入を容易にするべく、挿入部の一部領域に可撓性を
持たせている内視鏡が多いが、可撓性付与領域に鉗子起
上操作力が伝わることによって挿入部の先端位置が動い
てしまう可能性がある。このような挿入部の挙動は、鉗
子などの処置具の狙いが逸れる原因となる。2. Description of the Related Art In a side-viewing endoscope, for example, when performing cannulation or the like using forceps (treatment instrument) inserted in a treatment instrument insertion channel, the insertion direction is set at the tip of the insertion portion. Perform a forceps raising operation to project the forceps laterally with respect to. On the other hand, in many endoscopes, a part of the insertion part has flexibility to facilitate insertion of the bent path into the observation target. There is a possibility that the tip position of the insertion part may move due to the transmission of the force. Such behavior of the insertion portion causes the treatment tool such as forceps to lose its aim.
【０００３】[0003]
【発明の目的】本発明は、挿入部の少なくとも一部に可
撓性が付与された内視鏡において、挿入部の不要な動き
を抑え、特に処置具の起上操作を行う際に挿入部を安定
させて、処置具の操作性を向上させることを目的とす
る。SUMMARY OF THE INVENTION An object of the present invention is to provide an endoscope in which flexibility is imparted to at least a part of the insertion section, to suppress unnecessary movement of the insertion section, and particularly when performing a raising operation of a treatment instrument. The object is to stabilize and improve the operability of the treatment tool.
【０００４】[0004]
【発明の概要】本発明は、挿入部の少なくとも一部領域
に可撓性を有する内視鏡において、挿入部の可撓性付与
領域内に比重（重量）調整体を入出させて該可撓性付与
領域の比重を変化させる比重（重量）調整手段を備えた
ことを特徴としている。SUMMARY OF THE INVENTION According to the present invention, in an endoscope having flexibility in at least a partial region of an insertion portion, a specific gravity (weight) adjusting body is inserted into and removed from a flexibility imparting region of the insertion portion. It is characterized in that a specific gravity (weight) adjusting means for changing the specific gravity of the property imparting region is provided.
【０００５】比重調整手段は、挿入部の可撓性付与領域
に設けた中空の閉鎖空間と、該閉鎖空間に比重調整体を
注入または排出させる比重調整体供給機構から構成する
ことができる。この閉鎖空間は、比重調整体の入出に応
じて膨縮する袋状体とすることが好ましい。また、比重
調整体供給機構は、例えば、一端部が上記の袋状体内に
連通し他端部が内視鏡の外面に開口する管路と、該管路
の開口に対して比重調整体を入出させるポンプとから構
成可能である。The specific gravity adjusting means can be composed of a hollow closed space provided in the flexibility imparting region of the insertion portion and a specific gravity adjusting body supply mechanism for injecting or discharging the specific gravity adjusting body into the closed space. It is preferable that the closed space is a bag-shaped body that expands and contracts according to the entrance and exit of the specific gravity adjusting body. Further, the specific gravity adjusting body supply mechanism includes, for example, a pipe line having one end communicating with the bag-shaped body and the other end opening to the outer surface of the endoscope, and the specific gravity adjusting body with respect to the opening of the pipe line. It can be configured with a pump for moving in and out.
【０００６】比重調整体は、流体または固体粒状体であ
ることが好ましく、より具体的には、水や金属の粒状体
とすることが好ましい。The specific gravity adjusting body is preferably a fluid or solid granular material, and more specifically, water or metal granular material.
【０００７】本発明は特に、挿入部の先端に処置具を突
出させる開口を有し、該開口からの処置具の突出方向を
変化させる処置具起上部材を備えている内視鏡に好適で
ある。本発明の内視鏡であれば、上記の閉鎖空間に比重
調整体を満たして可撓性付与領域の実質的な比重を増加
させることによって、処置具起上部材の動作に応じた挿
入部のブレを防ぐことができる。処置具の起上機構の具
体的構造としては、例えば、処置具起上部材を挿入部に
枢着された回動部材とし、該回動部材の角度位置を、内
視鏡外部から操作可能な牽引ワイヤを介して変化させる
ことができる。The present invention is particularly suitable for an endoscope having an opening for projecting a treatment tool at the distal end of an insertion portion and having a treatment tool raising member for changing the projecting direction of the treatment tool from the opening. is there. In the endoscope of the present invention, by filling the closed space with the specific gravity adjusting body to increase the substantial specific gravity of the flexibility imparting region, the insertion portion of the insertion portion according to the operation of the treatment instrument raising member is increased. Blur can be prevented. As a specific structure of the raising mechanism of the treatment instrument, for example, the treatment instrument raising member is a rotating member pivotally attached to the insertion portion, and the angular position of the rotating member can be operated from outside the endoscope. It can be changed via the puller wire.
【０００８】本発明はまた、挿入部の少なくとも一部領
域に可撓性を有する内視鏡において、挿入部の可撓性付
与領域に設けた中空の閉鎖空間；及び該閉鎖空間に流体
または固体粒状体からなる比重調整体を注入または排出
させて上記可撓性付与領域の比重を変化させる比重調整
体供給機構；を備えたことを特徴としている。The present invention also provides an endoscope having flexibility in at least a partial region of the insertion part, wherein a hollow closed space provided in the flexibility imparting region of the insertion part; and a fluid or solid in the closed space. A specific gravity adjusting body supplying mechanism for injecting or discharging a specific gravity adjusting body made of a granular material to change the specific gravity of the flexibility imparting region is provided.
【０００９】本発明はまた、少なくとも一部領域に可撓
性を有し、処置具を突出させる開口を先端部に有する挿
入部と；該挿入部内に可動に設けた、開口からの処置具
の突出方向を変化させる処置具起上部材と；を備えた内
視鏡において、挿入部の可撓性付与領域に設けた中空の
閉鎖空間；及び、この閉鎖空間に流体または固体粒状体
からなる比重調整体を注入して可撓性付与領域の比重を
増加させ、処置具起上部材の動作に応じた挿入部の変位
を抑制する比重調整体供給機構；を備えたことを特徴と
している。比重調整体供給機構は、閉鎖空間に注入した
比重調整体を内視鏡外部へ排出可能であることが好まし
い。The present invention also provides an insertion portion which is flexible in at least a partial region and has an opening at the distal end through which the treatment instrument is projected; and a treatment instrument through the opening, which is movably provided in the insertion portion. In a endoscope provided with a treatment instrument raising member that changes a protruding direction; a hollow closed space provided in a flexibility imparting region of an insertion portion; and a specific gravity of a fluid or a solid granular material in the closed space. A specific gravity adjusting body supply mechanism for increasing the specific gravity of the flexibility imparting region by injecting the adjusting body and suppressing the displacement of the insertion portion according to the operation of the treatment instrument raising member. The specific gravity adjusting body supply mechanism is preferably capable of discharging the specific gravity adjusting body injected into the closed space to the outside of the endoscope.
【００１０】[0010]
【発明の実施の形態】図１ないし図６を参照して本発明
の内視鏡の一実施形態を説明する。図１に示す光学内視
鏡１０は医療用の内視鏡であり、体腔内に挿入される挿
入部１１とその基部側に接続された操作部１２を有して
いる。挿入部１１は、先端側から順に先端部１３、湾曲
部１４及び可撓管部（可撓性付与領域）１５を有してお
り、さらに可撓管部１５が連結部１６を介して操作部１
２に接続している。操作部１２からはユニバーサルチュ
ーブ１７が延設されており、該ユニバーサルチューブ１
７の末端に設けたコネクタ部１８は、内視鏡本体とは別
体の光源や送気送水源に接続している。BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the endoscope of the present invention will be described with reference to FIGS. The optical endoscope 10 shown in FIG. 1 is a medical endoscope, and has an insertion portion 11 to be inserted into a body cavity and an operation portion 12 connected to the base side thereof. The insertion portion 11 has a tip portion 13, a bending portion 14, and a flexible tube portion (flexibility imparting region) 15 in order from the tip end side, and the flexible tube portion 15 further includes an operating portion via a connecting portion 16. 1
Connected to 2. A universal tube 17 is extended from the operation section 12, and the universal tube 1
The connector portion 18 provided at the end of 7 is connected to a light source or an air / water supply source that is separate from the endoscope body.
【００１１】挿入部１１のうち、可撓管部１５は柔軟で
可撓性を有している。また、湾曲部１４内には、相対回
動可能に連結された複数の節輪（不図示）が、その長手
方向に並べて設けられている。操作部１２に設けた湾曲
操作ノブ２０Ａ、２０Ｂを回動操作することによって、
不図示の複数の湾曲操作ワイヤが牽引または弛緩され
て、複数の節輪を相対回動させる。すると湾曲部１４が
湾曲される。The flexible tube portion 15 of the insertion portion 11 is soft and flexible. Further, in the bending portion 14, a plurality of node rings (not shown) connected so as to be rotatable relative to each other are provided side by side in the longitudinal direction. By rotating the bending operation knobs 20A and 20B provided on the operation unit 12,
A plurality of bending operation wires (not shown) are pulled or loosened to relatively rotate the plurality of node rings. Then, the bending portion 14 is bent.
【００１２】先端部１３は硬性部材により構成されてお
り、該先端部１３には、対物レンズ保持孔、配光レンズ
保持孔、送気送水ノズル、後述する処置具挿通チャンネ
ル２６の先端が位置する側方開口２１（図４）等が形成
されている。The tip portion 13 is made of a hard member, and the tip portion 13 is provided with an objective lens holding hole, a light distribution lens holding hole, an air / water feeding nozzle, and a tip of a treatment instrument insertion channel 26 described later. Side openings 21 (FIG. 4) and the like are formed.
【００１３】先端部１３の対物レンズ保持孔には、結像
用の対物レンズが保持されている。対物レンズの背後に
は、操作部１２まで延設された画像観察用の光ファイバ
が配設されており、対物レンズによって結像された観察
対象の画像は、光ファイバを介して接眼部２２に送ら
れ、該接眼部２２を通して観察することができる。接眼
部２２内には、図示しない接眼レンズが配されている。
また、先端部１３の配光レンズ保持孔には、照明用の配
光レンズが保持されている。配光レンズには、ユニバー
サルチューブ１７のコネクタ部１８から挿入部１１の先
端部１３まで配設された図示しないライトガイドファイ
ババンドルを介して、光源からの照明光が与えられる。
これらの対物レンズや配光レンズは、挿入部１１の側方
（図１の矢印Ａ方向）に向けて設けられており、光学内
視鏡１０は、挿入部１１の挿入方向に対して側方を観察
することが可能な側視式内視鏡となっている。An objective lens for image formation is held in the objective lens holding hole of the tip portion 13. Behind the objective lens, an optical fiber for image observation extending to the operation unit 12 is arranged, and the image of the observation object formed by the objective lens is an eyepiece 22 through the optical fiber. And can be observed through the eyepiece 22. An eyepiece lens (not shown) is arranged in the eyepiece unit 22.
A light distribution lens for illumination is held in the light distribution lens holding hole of the tip portion 13. Illumination light from a light source is given to the light distribution lens via a light guide fiber bundle (not shown) arranged from the connector portion 18 of the universal tube 17 to the tip portion 13 of the insertion portion 11.
These objective lenses and light distribution lenses are provided toward the side of the insertion part 11 (direction of arrow A in FIG. 1), and the optical endoscope 10 is located laterally with respect to the insertion direction of the insertion part 11. It is a side-viewing type endoscope that can observe.
【００１４】操作部１２に設けた送気送水ボタン２３を
押し込むと、コネクタ部１８に接続する送水源と内視鏡
内に設けた送水チャンネルが連通し、該送水チャンネル
内に送水される。先端部１３に位置する送水チャンネル
の出口には前述の送気送水ノズルが設けられていて、送
水チャンネルに送られた洗浄水などの液体は、該ノズル
から対物レンズへ向けて噴出されてこれを洗浄する。ま
た、送気送水ボタン２３の上面には図示しない孔が設け
られており、この孔を塞ぐと、コネクタ部１８に接続す
る送気源の正圧が内視鏡内の送気チャンネルに作用し
て、該送気チャンネルの出口へ空気が送られる。送水チ
ャンネルと同様に、先端部１３に設けた送気チャンネル
の出口も前述の送気送水ノズルに接続しており、送気チ
ャンネルに空気が送られると、該ノズルから対物レンズ
へ向けて空気が噴出し、対物レンズに付着した洗浄水の
水滴や、体液などその他の液体の水滴を除去することが
できる。When the air / water supply button 23 provided on the operation section 12 is pushed, the water supply source connected to the connector section 18 communicates with the water supply channel provided in the endoscope, and water is supplied into the water supply channel. The above-mentioned air / water supply nozzle is provided at the outlet of the water supply channel located at the tip portion 13, and the liquid such as cleaning water sent to the water supply channel is ejected from the nozzle toward the objective lens to To wash. Further, a hole (not shown) is provided on the upper surface of the air / water supply button 23. When this hole is closed, the positive pressure of the air supply source connected to the connector portion 18 acts on the air supply channel in the endoscope. Air is sent to the outlet of the air supply channel. Similar to the water supply channel, the outlet of the air supply channel provided at the tip portion 13 is also connected to the above-described air supply / water supply nozzle, and when air is sent to the air supply channel, air is directed from the nozzle toward the objective lens. It is possible to remove the water droplets of the washing water ejected and adhered to the objective lens and the water droplets of other liquids such as body fluid.
【００１５】図２及び図３に示すように、連結部１６に
は、鉗子や高周波焼灼処置具といった処置具を挿入する
ための処置具挿入口突起２５が設けられており、該処置
具挿入口突起２５から内視鏡内方に向けて、処置具挿通
チャンネル２６が延設されている。処置具挿通チャンネ
ル２６の先端は、先端部１３に形成した側方開口２１内
に位置しており、処置具挿入口突起２５から挿入された
処置具は、処置具挿通チャンネル２６の先端側に突出さ
せることができる。As shown in FIGS. 2 and 3, the connecting portion 16 is provided with a treatment instrument insertion port projection 25 for inserting a treatment instrument such as forceps or a high frequency ablation treatment instrument. A treatment instrument insertion channel 26 extends from the projection 25 toward the inside of the endoscope. The tip of the treatment instrument insertion channel 26 is located in the side opening 21 formed in the tip portion 13, and the treatment instrument inserted from the treatment instrument insertion port projection 25 projects toward the tip side of the treatment instrument insertion channel 26. Can be made.
【００１６】また、処置具挿通チャンネル２６には吸引
チャンネル２８が接続しており、この吸引チャンネル２
８は、内視鏡の外部に設けた負圧源（不図示）に接続さ
れている。よって、処置具挿通チャンネル２６に対して
は、処置具挿入口突起２５を介して鉗子や高周波焼灼処
置具等の処置具を挿入することと、吸引チャンネル２８
を介して負圧源から負圧をかけることが可能である。処
置具挿通チャンネル２６を吸引用の管路として使用する
ときには、操作部１２に設けた吸引ボタン２９を押圧す
る。すると、負圧源側の管路と吸引チャンネル２８が連
通されて、負圧が処置具挿通チャンネル２６に作用し、
処置具挿通チャンネル２６の先端から体液等の流体を吸
引することができる。A suction channel 28 is connected to the treatment instrument insertion channel 26, and the suction channel 2
Reference numeral 8 is connected to a negative pressure source (not shown) provided outside the endoscope. Therefore, inserting a treatment tool such as forceps or a high-frequency cautery treatment tool into the treatment tool insertion channel 26 via the treatment tool insertion port projection 25, and the suction channel 28.
It is possible to apply a negative pressure from a negative pressure source via. When the treatment instrument insertion channel 26 is used as a suction conduit, the suction button 29 provided on the operation unit 12 is pressed. Then, the negative pressure source side conduit and the suction channel 28 are communicated with each other, and negative pressure acts on the treatment instrument insertion channel 26,
A fluid such as a body fluid can be sucked from the tip of the treatment instrument insertion channel 26.
【００１７】側方開口２１は、対物レンズの観察方向、
すなわち挿入部１１の側方（図１の矢印Ａ方向）に向け
て開口している。処置具挿通チャンネル２６の先端は、
この側方開口２１内に開口しており、処置具の起上機構
が側方開口２１内に配置されている。この処置具の起上
操作用の構造を図４に示す。先端部１３には、起上レバ
ー（処置具起上部材、回動部材）３０が枢支軸３１を中
心として回動可能に支持されており、さらにこの起上レ
バー３０の枢支軸３１を中心とする放射方向に離れた位
置に、牽引ワイヤ３２の一端部が固定されている。牽引
ワイヤ３２は、先端部１３から操作部１２へ向けて延設
されたガイドコイル３３内に挿通されており、その他端
部が操作部１２に設けたワイヤ牽引機構（不図示）に接
続している。操作部１２の外面にはワイヤ牽引機構を動
作させるための起上操作部材３５が設けられていて、こ
の起上操作部材３５を所定方向に操作することにより、
牽引ワイヤ３２が牽引される。牽引ワイヤ３２が牽引さ
れると、起上レバー３０が枢支軸３１を中心として図４
中の時計方向に回動し、処置具挿通チャンネル２６の先
端から突出する鉗子等の処置具Ｓを持ち上げ、該処置具
Ｓの先端が挿入部１１の側方へ向けて曲げられて対物レ
ンズによる観察方向へ向かって突出することができる。
このような起上機構は周知である。The side opening 21 is a viewing direction of the objective lens,
That is, the opening is open to the side of the insertion portion 11 (direction of arrow A in FIG. 1). The tip of the treatment instrument insertion channel 26 is
An opening is made in the side opening 21, and a raising mechanism of the treatment tool is arranged in the side opening 21. A structure for raising the treatment instrument is shown in FIG. A raising lever (a treatment instrument raising member, a rotating member) 30 is rotatably supported on the distal end portion 13 about a pivot shaft 31, and the pivot shaft 31 of the raising lever 30 is further supported. One end of the pulling wire 32 is fixed at a position separated from the center in the radial direction. The pulling wire 32 is inserted into a guide coil 33 extending from the distal end portion 13 toward the operating portion 12, and the other end portion thereof is connected to a wire pulling mechanism (not shown) provided in the operating portion 12. There is. A raising operation member 35 for operating the wire pulling mechanism is provided on the outer surface of the operation portion 12, and by operating the raising operation member 35 in a predetermined direction,
The pulling wire 32 is pulled. When the pulling wire 32 is pulled, the raising lever 30 moves around the pivot 31 as shown in FIG.
The treatment tool S such as forceps protruding from the distal end of the treatment tool insertion channel 26 is rotated in the clockwise direction and is lifted. It can project toward the viewing direction.
Such a raising mechanism is well known.
【００１８】ところで、以上のような処置具の起上操作
を行う際に、従来の内視鏡では、起上操作力が挿入部、
特に柔軟な可撓管部に伝わり、該可撓管部が動いてしま
うおそれがあった。可撓管部に変位が生じると、観察
（処置）対象に対する挿入部先端の位置がずれてしまう
ため、挿入部の位置を再度調整する必要が生じ、手間が
かかる。本実施形態の内視鏡は、以下に説明する構造に
よってこうした不具合を防ぐことができる。By the way, when performing the raising operation of the treatment instrument as described above, in the conventional endoscope, the raising operation force is applied to the insertion portion,
In particular, there is a risk that the flexible tube portion is transmitted to the flexible tube portion and the flexible tube portion moves. When the flexible tube portion is displaced, the position of the distal end of the insertion portion with respect to the observation (treatment) target is displaced, so that the position of the insertion portion needs to be readjusted, which is troublesome. The endoscope of the present embodiment can prevent such a defect by the structure described below.
【００１９】図２及び図３に示すように、連結部１６に
は比重調整体注入口突起４０が設けられている。より詳
細には、連結部１６は、操作部１２の外筒３６から突出
した内筒３７の外側を覆う第１筒状部４１、この第１筒
状部４１の前方を覆う第２筒状部４２、この第２筒状部
４２の内側に固定された可撓管口金４３に対して口金部
４４を介して固定された可撓管４５、この可撓管４５の
外側を覆う折止ゴム４６などから構成されており、比重
調整体注入口突起４０や処置具挿入口突起２５は第１筒
状部４１に形成されている。第１筒状部４１と第２筒状
部４２は合成樹脂材料で形成されている。また図６に示
すように、可撓管４５は、非通水性の外皮チューブ４
７、その内側に配した金属線を編組して形成した網状管
４８、及び最も内側の螺旋管４９等からなっており、全
体として可撓性を有し、折止ゴム４６から突出して前述
の可撓管部１５を構成する。外面筒３６と第１筒状部４
１の間、第１筒状部４１と第２筒状部４２の間、第２筒
状部４２と可撓管口金４３の間はそれぞれ、Ｏリング３
８Ａ、３８Ｂ及び３８Ｃによって液密に塞がれれてい
る。As shown in FIGS. 2 and 3, the connecting portion 16 is provided with a specific gravity adjusting body injection port projection 40. More specifically, the connecting portion 16 includes a first tubular portion 41 that covers the outer side of the inner tubular portion 37 that projects from the outer tubular portion 36 of the operating portion 12, and a second tubular portion that covers the front of the first tubular portion 41. 42, a flexible tube 45 fixed to the flexible tube mouthpiece 43 fixed to the inside of the second tubular portion 42 via a mouthpiece portion 44, and a rubber stopper 46 covering the outside of the flexible tube 45. The specific gravity adjusting body injection port protrusion 40 and the treatment instrument insertion port protrusion 25 are formed on the first tubular portion 41. The first tubular portion 41 and the second tubular portion 42 are made of a synthetic resin material. Further, as shown in FIG. 6, the flexible tube 45 is a non-water-permeable outer tube 4
7, a mesh tube 48 formed by braiding metal wires arranged on the inside thereof, an innermost spiral tube 49, etc., and is flexible as a whole, and protrudes from the stopper rubber 46 to be the above-mentioned. The flexible tube portion 15 is configured. The outer cylinder 36 and the first cylindrical portion 4
1, the first tubular portion 41 and the second tubular portion 42, and the second tubular portion 42 and the flexible tube base 43, respectively, the O-ring 3
It is liquid-tightly closed by 8A, 38B and 38C.
【００２０】比重調整体注入口突起４０は第１筒状部４
１を貫通する筒状をなしており、その内周面には、内視
鏡外部に臨む雌ねじ４０ｘが形成されている。この比重
調整体注入口突起４０の内部には口金５１が装着され、
該口金５１は雌ねじ４０ｘに螺合する押さえナット５０
によって抜け止められている。比重調整体注入口突起４
０と口金５１の間はＯリング５２によって液密に塞がれ
ている。口金５１は中心部に貫通孔５３を有し、該貫通
孔５３は、第１筒状部４１（連結部１６）の内側に位置
する比重調整体供給チューブ（管路）５４に連通してい
る。The specific gravity adjusting body injection port projection 40 is formed in the first cylindrical portion 4
1 is formed into a cylindrical shape, and an internal thread 40x facing the outside of the endoscope is formed on the inner peripheral surface thereof. A cap 51 is mounted inside the specific gravity adjusting body injection port projection 40,
The cap 51 is a cap nut 50 that is screwed into the female screw 40x.
It has been stopped by. Specific gravity adjusting body injection port protrusion 4
A space between 0 and the base 51 is liquid-tightly closed by an O-ring 52. The base 51 has a through hole 53 at the center thereof, and the through hole 53 communicates with a specific gravity adjusting body supply tube (pipe line) 54 located inside the first tubular portion 41 (connecting portion 16). .
【００２１】また、比重調整体注入口突起４０の雌ねじ
４０ｘに対しては、押さえナット５０の上から、蓋部材
５５と、比重調整用ポンプ６０から延出したソケット６
１（図３）とを択一的に螺着させることができる。蓋部
材５５は、口金５１と対向する面にシール部材５６を有
しており、蓋部材５５が比重調整体注入口突起４０に装
着されると、シール部材５６が該口金５１の貫通孔５３
を液密に塞ぐ。Further, with respect to the female screw 40x of the specific gravity adjusting body injection port projection 40, the socket 6 extending from the cover nut 50 and the specific gravity adjusting pump 60 from above the holding nut 50.
1 (FIG. 3) can be screwed alternatively. The lid member 55 has a seal member 56 on the surface facing the base 51, and when the lid member 55 is attached to the specific gravity adjusting body injection port projection 40, the seal member 56 causes the through hole 53 of the base 51.
Liquid tightly.
【００２２】比重調整用ポンプ６０は、中継チューブ６
２を介してソケット６１に対して比重（重量）調整体Ｒ
を送出することと、ソケット６１側から比重調整体Ｒを
吸引することの両方が可能なポンプである。ソケット６
１が比重調整体注入口突起４０の凹部に装着されると、
貫通孔５３を通して、比重調整用ポンプ６０と比重調整
体供給チューブ５４の間で比重調整体Ｒを流通させるこ
とが可能になる。比重調整体Ｒは、所定の比重を有する
流体（液体）や固体粒子であり、具体的には、流体とし
ては水、固体粒子としては金（１９．３２ｇ／ｃ
ｍ3）、白金（２１．４５ｇ／ｃｍ3）、タングステン
（１９．３ｇ／ｃｍ3）などであることが好ましい。The specific gravity adjusting pump 60 includes a relay tube 6
Specific gravity (weight) adjusting body R for socket 61 via 2
Is a pump that is capable of both sending out and sucking the specific gravity adjusting body R from the socket 61 side. Socket 6
When 1 is attached to the concave portion of the specific gravity adjusting body injection port projection 40,
Through the through hole 53, the specific gravity adjusting body R can be circulated between the specific gravity adjusting pump 60 and the specific gravity adjusting body supply tube 54. The specific gravity adjusting body R is a fluid (liquid) or a solid particle having a predetermined specific gravity. Specifically, the fluid is water, and the solid particle is gold (19.32 g / c).
m 3), platinum (21.45g / cm 3), tungsten (19.3g / cm 3) It is preferred that the like.
【００２３】口金５１から延出される比重調整体供給チ
ューブ５４は可撓管４５内に挿入され、その先端部は可
撓管部１５（可撓管４５）内に設けた比重調整バルーン
（袋状体）５７に接続している（図５、図６参照）。比
重調整バルーン５７は、比重調整体供給チューブ５４と
の接続部分以外が閉じられた袋状体であり、伸縮性を有
する。可撓管部１５内における比重調整バルーン５７の
設置位置は任意であるが、できるだけ挿入部１１の先端
に近く配置することが好ましい。The specific gravity adjusting body supply tube 54 extending from the base 51 is inserted into the flexible tube 45, and the tip portion thereof is provided in the flexible tube portion 15 (flexible tube 45) with a specific gravity adjusting balloon (bag shape). (Body) 57 (see FIGS. 5 and 6). The specific gravity adjusting balloon 57 is a bag-shaped body that is closed except for the connection portion with the specific gravity adjusting body supply tube 54, and has elasticity. The specific gravity adjusting balloon 57 may be installed in the flexible tube portion 15 at an arbitrary position, but it is preferable to dispose the specific gravity adjusting balloon 57 as close as possible to the tip of the insertion portion 11.
【００２４】以上の構造にて、処置具Ｓの起上操作の際
に挿入部１１のブレを防ぐためには、まず比重調整体注
入口突起４０から蓋部材５５を取り外し、代わりにソケ
ット６１を装着する（図３）。続いて、比重調整用ポン
プ６０から比重調整体Ｒを送出し、ソケット６１や口金
５１（貫通孔５３）を介して比重調整体供給チューブ５
４内に該比重調整体Ｒを注入する。比重調整体供給チュ
ーブ５４に注入した比重調整体Ｒは比重調整バルーン５
７に溜まり、徐々に比重調整バルーン５７の重量が増加
する（図６）。このとき、比重調整バルーン５７は比重
調整体Ｒの流入に従って膨張する。比重調整バルーン５
７とこれを内蔵する可撓管部１５を単一の物質からなる
領域とみなせば、比重調整バルーン５７の重量が増加す
ることは、実質的には可撓管部１５の比重が変化するこ
とと同義である。したがって、比重調整バルーン５７の
重量増加に伴って可撓管部１５の比重が増加して安定
し、該可撓管部１５に曲げやブレといった変位を与える
ためには従前よりも大きな力が必要となる。その結果、
前述の処置具起上操作の応力によっても可撓管部１５
（挿入部１１）が変位せず、該可撓管部１５（挿入部１
１）をブレさせずに、最初に設定した位置に保たせるこ
とができる。よって、先端部１３の位置ずれが防止さ
れ、挿入部１１の位置を再調整する手間がかからず、術
者の負担が軽減される。With the above structure, in order to prevent the insertion portion 11 from moving when the treatment instrument S is raised, the lid member 55 is first removed from the specific gravity adjusting body injection port projection 40, and the socket 61 is attached instead. (Fig. 3). Subsequently, the specific gravity adjusting body R is delivered from the specific gravity adjusting pump 60, and the specific gravity adjusting body supply tube 5 is passed through the socket 61 and the base 51 (through hole 53).
The specific gravity adjusting body R is injected into the inside of the container 4. The specific gravity adjusting body R injected into the specific gravity adjusting body supply tube 54 is the specific gravity adjusting balloon 5
7, and the weight of the specific gravity adjusting balloon 57 gradually increases (FIG. 6). At this time, the specific gravity adjusting balloon 57 expands as the specific gravity adjusting body R flows in. Specific gravity adjustment balloon 5
If 7 and the flexible tube portion 15 containing the same are regarded as a region made of a single substance, the increase in the weight of the specific gravity adjusting balloon 57 means that the specific gravity of the flexible tube portion 15 changes substantially. Is synonymous with. Therefore, as the weight of the specific gravity adjusting balloon 57 increases, the specific gravity of the flexible tube portion 15 increases and stabilizes, and a larger force than before is required to give the flexible tube portion 15 a displacement such as bending or shaking. Becomes as a result,
The flexible tube portion 15 is also affected by the stress of the above-described operation of raising the treatment tool.
The (insertion portion 11) is not displaced, and the flexible tube portion 15 (insertion portion 1)
It is possible to keep the position set at the beginning without blurring 1). Therefore, the displacement of the distal end portion 13 is prevented, the time and effort for readjusting the position of the insertion portion 11 are not required, and the burden on the operator is reduced.
【００２５】処置具の使用が終了して挿入部１１を安定
させておく必要がなくなると、比重調整用ポンプ６０に
吸引動作を行わせて、比重調整体供給チューブ５４を介
して比重調整バルーン５７内の比重調整体Ｒを吸引す
る。すると、可撓管部１５の重さは元に戻り、該可撓管
部１５は再び容易に変形し得る柔軟な状態となる。比重
調整体Ｒが比重調整用ポンプ６０側に吸引されると、比
重調整バルーン５７は図５のように縮小する。その後、
比重調整体注入口突起４０からソケット６１を取り外
し、代わりに蓋部材５５で塞ぐことによって、比重調整
体注入口突起４０の内側である比重調整体供給チューブ
５４や比重調整バルーン５７は、液密に保たれた状態と
なる。When it is no longer necessary to stabilize the insertion portion 11 after the use of the treatment tool, the specific gravity adjusting pump 60 is caused to perform a suction operation, and the specific gravity adjusting balloon 57 is passed through the specific gravity adjusting body supply tube 54. The specific gravity adjusting body R inside is sucked. Then, the weight of the flexible tube portion 15 returns to its original state, and the flexible tube portion 15 is in a flexible state where it can be easily deformed again. When the specific gravity adjusting body R is sucked toward the specific gravity adjusting pump 60, the specific gravity adjusting balloon 57 is contracted as shown in FIG. afterwards,
By removing the socket 61 from the specific gravity adjusting body injection port projection 40 and closing it with the lid member 55, the specific gravity adjusting body supply tube 54 and the specific gravity adjusting balloon 57 which are inside the specific gravity adjusting body injection port projection 40 are made liquid-tight. It will be kept.
【００２６】以上のように、本実施形態の光学内視鏡１
０では、可撓管部１５内に中空の閉鎖空間である比重調
整バルーン５７を設け、この比重調整バルーン５７に対
して流体または固体粒状体からなる比重調整体Ｒを入出
させることで、挿入部１１における可撓性付与領域の実
質的な比重を変化させるため、処置具Ｓの起上操作時に
おける挿入部１１のブレを防ぐことができる。比重調整
体Ｒは、不要なときには挿入部１１から抜いておくこと
ができるので、内視鏡の挿入時の作業性などを損なうこ
とはない。As described above, the optical endoscope 1 according to the present embodiment.
At 0, a specific gravity adjusting balloon 57, which is a hollow closed space, is provided in the flexible tube portion 15, and a specific gravity adjusting body R made of a fluid or a solid granular material is inserted into and removed from the specific gravity adjusting balloon 57, whereby the insertion portion is inserted. Since the substantial specific gravity of the flexibility-imparting region of 11 is changed, it is possible to prevent the insertion portion 11 from being shaken when the treatment instrument S is raised. Since the specific gravity adjusting body R can be removed from the insertion portion 11 when it is unnecessary, the workability at the time of inserting the endoscope is not impaired.
【００２７】なお、比重調整バルーン５７に比重調整体
Ｒを注入して挿入部１１の安定を図るのは、特に処置具
の起上操作時に有効であるが、起上操作時以外に比重調
整体Ｒを注入してもよい。例えば、処置具を使用しない
観察時においても、可撓管部１５の比重増加により挿入
部１１が安定すれば、対物レンズの位置ブレが起こりに
くく観察対象の視認性が向上するので、このような視認
性向上の目的で比重調整を行ってもよい。Injecting the specific gravity adjusting body R into the specific gravity adjusting balloon 57 to stabilize the insertion portion 11 is particularly effective when the treatment instrument is raised, but the specific gravity adjusting body is not used during the raising operation. R may be injected. For example, even when observing without using a treatment tool, if the insertion portion 11 is stabilized by the increase in the specific gravity of the flexible tube portion 15, the positional deviation of the objective lens is less likely to occur and the visibility of the observation target is improved. The specific gravity may be adjusted for the purpose of improving visibility.
【００２８】以上、図示実施形態を参照して本発明によ
る可撓性可変内視鏡を説明したが、本発明は図示実施形
態に限定されるものではない。例えば、比重調整体Ｒ
は、内視鏡のタイプによって好ましい比重が異なるの
で、前述した物質以外のものとすることも可能である。
また、図示実施形態では比重調整体注入口突起４０が連
結部１６に設けられているが、内視鏡内への比重調整体
Ｒの入口は異なる場所に設けても良い。Although the flexible variable endoscope according to the present invention has been described with reference to the illustrated embodiments, the present invention is not limited to the illustrated embodiments. For example, the specific gravity adjusting body R
Since the preferable specific gravity differs depending on the type of endoscope, it is possible to use a substance other than the above-mentioned substances.
Further, in the illustrated embodiment, the specific gravity adjusting body injection port projection 40 is provided on the connecting portion 16, but the inlet of the specific gravity adjusting body R into the endoscope may be provided at a different place.
【００２９】[0029]
【発明の効果】以上から明らかなように、本発明によれ
ば、挿入部の少なくとも一部に可撓性が付与された内視
鏡において、その可撓性付与領域内に比重調整体を入出
させて該可撓性付与領域の比重を変化させる比重調整手
段を設けたので、挿入部の不要な動きを抑え、特に処置
具の起上操作を行う内視鏡において挿入部を安定させ
て、処置具の操作性を向上させることができる。As is apparent from the above, according to the present invention, in the endoscope in which at least a part of the insertion portion is provided with flexibility, the specific gravity adjusting body is moved into and out of the flexibility providing region. Since the specific gravity adjusting means for changing the specific gravity of the flexibility imparting region is provided, the unnecessary movement of the insertion portion is suppressed, and particularly the insertion portion is stabilized in the endoscope for raising the treatment instrument, The operability of the treatment tool can be improved.
【図１】本発明を適用した内視鏡の一実施形態を示す外
観図である。FIG. 1 is an external view showing an embodiment of an endoscope to which the present invention is applied.
【図２】図１の内視鏡の挿入部と操作部の連結部付近の
断面図である。2 is a cross-sectional view of the vicinity of a connecting portion between an insertion portion and an operation portion of the endoscope of FIG.
【図３】図２の状態から、比重調整体注入口突起に対し
蓋部材に代えて比重調整用ポンプのソケットを装着し、
比重調整体を注入している状態を示す断面図断面図であ
る。FIG. 3 is a diagram showing a state in which a socket for a specific gravity adjusting pump is attached to the specific gravity adjusting body injection port projection in place of the lid member from the state of FIG.
It is sectional drawing which shows the state which is injecting the specific gravity adjusting body.
【図４】図１の内視鏡において挿入部の先端付近に設け
た処置具起上用の機構を示す断面図である。FIG. 4 is a cross-sectional view showing a mechanism for raising a treatment tool, which is provided near the distal end of the insertion portion in the endoscope of FIG.
【図５】図１の内視鏡において可撓管部内に位置する比
重調整バルーンと比重調整体供給チューブを示す断面図
である。5 is a cross-sectional view showing a specific gravity adjusting balloon and a specific gravity adjusting body supply tube located inside the flexible tube portion in the endoscope of FIG.
【図６】図５の比重調整バルーンに比重調整体が送り込
まれて膨張した状態を示す断面図である。FIG. 6 is a cross-sectional view showing a state where a specific gravity adjusting body is fed into the specific gravity adjusting balloon of FIG. 5 and inflated.
１０ 光学内視鏡 １１ 挿入部 １２ 操作部 １３ 先端部 １４ 湾曲部 １５ 可撓管部（可撓性付与領域） １６ 連結部 ２１ 側方開口 ２２ 接眼部 ２５ 処置具挿入口突起 ２６ 処置具挿通チャンネル ２８ 吸引チャンネル ３０ 起上レバー（処置具起上部材、回動部材） ３１ 枢支軸 ３２ 牽引ワイヤ ３３ ガイドコイル ３５ 起上操作部材 ４０ 比重調整体注入口突起 ４０ｘ 雌ねじ ４１ 第１筒状部 ４２ 第２筒状部 ４３ 可撓管口金 ４４ 口金部 ４５ 可撓管 ４６ 折止ゴム ５０ 押さえナット ５１ 口金 ５２ Ｏリング ５３ 貫通孔 ５４ 比重調整体供給チューブ（管路） ５５ 蓋部材 ５６ シール部材 ５７ 比重調整バルーン（袋状体） ６０ 比重調整用ポンプ ６１ ソケット ６２ 中継チューブ Ｒ 比重調整体 Ｓ 処置具 10 Optical endoscope 11 Insert 12 Operation part 13 Tip 14 Curved part 15 Flexible tube portion (flexibility imparting area) 16 Connection 21 Side opening 22 Eyepiece 25 Treatment tool insertion port protrusion 26 Treatment tool insertion channel 28 suction channels 30 Raising lever (treatment tool raising member, rotating member) 31 pivot 32 traction wire 33 guide coil 35 Raising operation member 40 Specific gravity adjusting body injection port protrusion 40x female screw 41 First tubular part 42 Second tubular portion 43 Flexible tube mouthpiece 44 Clasp 45 flexible tube 46 Folding rubber 50 cap nut 51 mouthpiece 52 O-ring 53 through hole 54 Specific gravity adjusting body supply tube (pipe) 55 Lid member 56 Seal member 57 Specific gravity adjustment balloon (bag) 60 Specific gravity adjustment pump 61 socket 62 Relay tube R Specific gravity adjuster S treatment tool
───────────────────────────────────────────────────── フロントページの続き (72)発明者 桂田 弘之 東京都板橋区前野町２丁目36番９号 旭光 学工業株式会社内 (72)発明者 藤井 喜則 東京都板橋区前野町２丁目36番９号 旭光 学工業株式会社内 Ｆターム(参考） 2H040 BA00 DA11 DA15 4C061 AA00 BB04 CC02 DD03 FF24 FF50 HH21 ─────────────────────────────────────────────────── ─── Continued front page (72) Inventor Hiroyuki Katsura 2-36 Maeno-cho, Itabashi-ku, Tokyo Asahikou Gaku Kogyo Co., Ltd. (72) Inventor Yoshinori Fujii 2-36 Maeno-cho, Itabashi-ku, Tokyo Asahikou Gaku Kogyo Co., Ltd. F-term (reference) 2H040 BA00 DA11 DA15 4C061 AA00 BB04 CC02 DD03 FF24 FF50 HH21
Claims (12)
有する内視鏡において、上記挿入部の可撓性付与領域内
に比重調整体を入出させて該可撓性付与領域の比重を変
化させる比重調整手段を備えたことを特徴とする内視
鏡。1. In an endoscope having flexibility in at least a partial region of an insertion portion, a specific gravity adjusting body is inserted into and removed from a flexibility imparting region of the insertion portion to adjust a specific gravity of the flexibility imparting region. An endoscope comprising a specific gravity adjusting means for changing the specific gravity.
重調整手段は、 上記挿入部の可撓性付与領域に設けた中空の閉鎖空間；
及び該閉鎖空間に比重調整体を注入または排出させる比
重調整体供給機構；を備えている内視鏡。2. The endoscope according to claim 1, wherein the specific gravity adjusting means is a hollow closed space provided in a flexibility imparting region of the insertion portion.
And a specific gravity adjusting body supply mechanism for injecting or discharging the specific gravity adjusting body into the closed space.
鎖空間は、上記比重調整体の入出に応じて膨縮する袋状
体からなる内視鏡。3. The endoscope according to claim 2, wherein the closed space is a bag-shaped body that expands and contracts according to the entry and exit of the specific gravity adjusting body.
重調整体供給機構は、 一端部が上記袋状体内に連通し他端部が内視鏡の外面に
開口する管路と、該管路の開口に対して上記比重調整体
を入出させるポンプとを備えている内視鏡。4. The endoscope according to claim 3, wherein the specific gravity adjusting body supply mechanism includes a conduit having one end communicating with the bag-shaped body and the other end opening to an outer surface of the endoscope. An endoscope comprising: a pump for moving the specific gravity adjusting body into and out of an opening of a duct.
視鏡において、上記比重調整体は流体または固体粒状体
である内視鏡。5. The endoscope according to any one of claims 1 to 4, wherein the specific gravity adjusting body is a fluid or a solid granular body.
整体は水である内視鏡。6. The endoscope according to claim 5, wherein the specific gravity adjusting body is water.
整体は金属の粒状体である内視鏡。7. The endoscope according to claim 5, wherein the specific gravity adjusting body is a metal granular body.
視鏡において、上記挿入部の先端に処置具を突出させる
開口を有し、該開口からの処置具の突出方向を変化させ
る処置具起上部材を備えている内視鏡。8. The endoscope according to any one of claims 1 to 7, wherein the distal end of the insertion portion has an opening through which a treatment tool is projected, and a direction in which the treatment tool is projected from the opening is changed. An endoscope including a treatment tool raising member.
置具起上部材は、挿入部に枢着された回動部材であり、
内視鏡外面に設けた操作部材の操作に応じて該回動部材
を牽引してその角度位置を変化させる牽引ワイヤを備え
ている内視鏡。9. The endoscope according to claim 8, wherein the treatment instrument raising member is a rotating member pivotally attached to the insertion portion,
An endoscope including a pulling wire that pulls the rotating member to change its angular position in response to an operation of an operating member provided on the outer surface of the endoscope.
を有する内視鏡において、 上記挿入部の可撓性付与領域に設けた中空の閉鎖空間；
及び該閉鎖空間に流体または固体粒状体からなる比重調
整体を注入または排出させて上記可撓性付与領域の比重
を変化させる比重調整体供給機構；を備えたことを特徴
とする内視鏡。10. An endoscope having flexibility in at least a partial region of the insertion part, wherein a hollow closed space provided in the flexibility imparting region of the insertion part;
And a specific gravity adjusting body supply mechanism for changing the specific gravity of the flexibility imparting region by injecting or discharging a specific gravity adjusting body made of fluid or solid granular material into the closed space.
処置具を突出させる開口を先端部に有する挿入部と；該
挿入部内に可動に設けた、上記開口からの処置具の突出
方向を変化させる処置具起上部材と；を備えた内視鏡に
おいて、 上記挿入部の可撓性付与領域に設けた中空の閉鎖空間；
及びこの閉鎖空間に流体または固体粒状体からなる比重
調整体を注入して上記可撓性付与領域の比重を増加さ
せ、上記処置具起上部材の動作に応じた挿入部の変位を
抑制する比重調整体供給機構；を備えたことを特徴とす
る内視鏡。11. At least a partial region has flexibility,
An endoscope comprising: an insertion section having an opening at a distal end through which a treatment tool is projected; and a treatment tool raising member that is movably provided in the insertion section and that changes a protruding direction of the treatment tool from the opening. A hollow closed space provided in the flexibility imparting region of the insertion portion;
And a specific gravity adjusting body made of a fluid or a solid granular material is injected into the closed space to increase the specific gravity of the flexibility imparting region and suppress the displacement of the insertion portion according to the operation of the treatment instrument raising member. An endoscope comprising: an adjusting body supply mechanism;
記比重調整体供給機構は、上記閉鎖空間に注入した比重
調整体を内視鏡外部へ排出可能である内視鏡。12. The endoscope according to claim 11, wherein the specific gravity adjusting body supply mechanism can discharge the specific gravity adjusting body injected into the closed space to the outside of the endoscope.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001245513A JP2003052619A (en) | 2001-08-13 | 2001-08-13 | Endoscope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001245513A JP2003052619A (en) | 2001-08-13 | 2001-08-13 | Endoscope |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003052619A true JP2003052619A (en) | 2003-02-25 |
Family
ID=19075245
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001245513A Withdrawn JP2003052619A (en) | 2001-08-13 | 2001-08-13 | Endoscope |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2003052619A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006075446A (en) * | 2004-09-13 | 2006-03-23 | Fujinon Corp | Endoscope |
| CN111789565A (en) * | 2016-07-11 | 2020-10-20 | Hoya株式会社 | Endoscope with a detachable handle |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57209032A (en) * | 1981-06-17 | 1982-12-22 | Fuji Photo Optical Co Ltd | Endoscope |
| JPS6395043A (en) * | 1986-10-08 | 1988-04-26 | オリンパス光学工業株式会社 | Endoscope with treatment instrument erecting apparatus |
| JPH05237056A (en) * | 1991-04-02 | 1993-09-17 | Olympus Optical Co Ltd | Endoscope |
-
2001
- 2001-08-13 JP JP2001245513A patent/JP2003052619A/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57209032A (en) * | 1981-06-17 | 1982-12-22 | Fuji Photo Optical Co Ltd | Endoscope |
| JPS6395043A (en) * | 1986-10-08 | 1988-04-26 | オリンパス光学工業株式会社 | Endoscope with treatment instrument erecting apparatus |
| JPH05237056A (en) * | 1991-04-02 | 1993-09-17 | Olympus Optical Co Ltd | Endoscope |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006075446A (en) * | 2004-09-13 | 2006-03-23 | Fujinon Corp | Endoscope |
| JP4578904B2 (en) * | 2004-09-13 | 2010-11-10 | 富士フイルム株式会社 | Endoscope |
| CN111789565A (en) * | 2016-07-11 | 2020-10-20 | Hoya株式会社 | Endoscope with a detachable handle |
| CN111789565B (en) * | 2016-07-11 | 2024-03-19 | Hoya株式会社 | Endoscope with a lens |
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