WO2007072556A1

WO2007072556A1 - Surgical microscope and extending tube of side view type for surgical microscope

Info

Publication number: WO2007072556A1
Application number: PCT/JP2005/023491
Authority: WO
Inventors: Katsushige Nakamura
Original assignee: Mitaka Kohki Co., Ltd.
Priority date: 2005-12-21
Filing date: 2005-12-21
Publication date: 2007-06-28

Abstract

It is intended to provide an extending tube of the side view type for a surgical microscope whereby the inner wall of an affected part in the form of a cavity can be observed. By inserting the bottom end (10) of a tubular main body (11) into an affected part (27) in the form of a cavity, the inner wall can be irradiated from the side with illumination light (A) from a surgical microscope (1) via an illumination aperture at the bottom end (10). The sideway observation light (B) reflected from the inner wall can be incorporated via an observation aperture and then guided to the surgical microscope side. Thus, the inner wall of the affected part (27) in the form of a cavity can be observed without fail. While mounting an attachment member (12) to the surgical microscope (1), the tubular main body (11) is turned outward from the viewing field of the surgical microscope (1) around a hinge member (13). Thus, it also becomes possible to observe the bottom face of the affected part (27) in the form of a cavity as in a usual case.

Description

明細書 Specification

手術顕微鏡および手術顕微鏡用の側視型延長鏡筒 Surgical microscope and side-view extension tube for surgical microscope

技術分野 Technical field

[0001] 本発明は、手術顕微鏡および手術顕微鏡用の着脱自在な側視型延長鏡筒に関するものである。 TECHNICAL FIELD [0001] The present invention relates to a surgical microscope and a detachable side-view extension lens barrel for the surgical microscope.

背景技術 Background art

[0002] 脳外科等にぉ、て用いられる手術顕微鏡は患部を立体的に把握できる立体 (実体 )顕微鏡である。たとえば、日本国特開 2001— 208979号公報に開示される手術顕微鏡において、手術顕微鏡の下面部には、照明光照射口と観察光取入口が設けられ、照明光照射口から下向きに照射した照明光で患部を照らし、そこから反射された観察光を、観察光取入口から内部に取り入れて、対物光学系、ズーム光学系、接眼光学系を介してドクターの 2つの瞳に導かれる。 [0002] A surgical microscope used for brain surgery or the like is a three-dimensional (substance) microscope that can grasp an affected part three-dimensionally. For example, in a surgical microscope disclosed in Japanese Patent Application Laid-Open No. 2001-208979, an illumination light irradiation port and an observation light intake port are provided on the lower surface portion of the surgical microscope, and are directed downward from the illumination light irradiation port. Illuminate the affected area with the irradiated illumination light, and the observation light reflected from it is taken into the interior from the observation light intake and guided to the two pupils of the doctor via the objective optical system, zoom optical system, and eyepiece optical system. .

発明の開示 Disclosure of the invention

発明が解決しょうとする課題 Problems to be solved by the invention

[0003] しカゝしながら、このような従来の技術にあっては、手術顕微鏡の下面部に形成された照明光照射口と観察光取入口により、患部を照らして観察する構造のため、手術顕微鏡の下面部を向けた方向（一般に下向き)でしか患部を観察することができない[0003] However, in such a conventional technology, because of the structure that illuminates the affected area with the illumination light irradiation port and the observation light intake formed on the lower surface of the surgical microscope, Surgery The affected area can only be observed in the direction of the lower surface of the microscope (generally downward)

。従って、例えば腔状患部を観察する場合など、腔状患部の底面し力観察できず、腔状患部の内壁は観察することができな力つた。 . Therefore, for example, when observing a cavity affected part, the bottom surface of the cavity affected part cannot be observed, and the inner wall of the cavity affected part cannot be observed.

[0004] 本発明は、このような従来の技術に着目してなされたものであり、腔状患部の内壁も観察することができる手術顕微鏡および手術顕微鏡用の側視型延長鏡筒を提供するものである。 [0004] The present invention has been made by paying attention to such a conventional technique, and provides a surgical microscope capable of observing the inner wall of a cavity-like affected area and a side-viewing extension lens barrel for the surgical microscope. Is.

[0005] 本発明の第 1の技術的側面によれば、照明光照射口と観察光取入口を下面部に有する手術顕微鏡に取付けて使用される手術顕微鏡用の側視型延長鏡筒が、上端部よりも下端部の方が小径な筒状本体を備え、前記該筒状本体の上端部は、手術顕微鏡の下面部における照明光照射口と観察光取入口が形成された領域に取付自在なアタッチメント部を有し、筒状本体の下端部は、側面に観察窓と照明窓を有する有底構造で、筒状本体の内部に観察窓力の立体観察用の 2系統の観察光を観察光取入口に導く観察光路と照明光照射ロカの照明光を照明窓に導く照明光路が形成されたことを特徴とする。 [0005] According to a first technical aspect of the present invention, there is provided a side-view-type extension lens barrel for a surgical microscope used by being attached to a surgical microscope having an illumination light irradiation port and an observation light intake port on a lower surface portion. A cylindrical main body having a smaller diameter at the lower end than at the upper end is provided, and the upper end of the cylindrical main body is attached to a region of the lower surface of the surgical microscope where the illumination light irradiation port and the observation light inlet are formed. The lower end of the cylindrical body has an observation window and an illumination window on the side. With a bottomed structure, an observation optical path that leads the observation light of the two systems for stereoscopic observation of the observation window force to the observation light inlet and an illumination light path that guides the illumination light from the illumination light irradiation locus to the illumination window are formed inside the cylindrical body. It is characterized by that.

[0006] 本発明の第 2の技術的側面によれば、異なる視野が選択可能な手術用顕微鏡が、第 1の光路に設けられた対物光学系および接眼光学系と前記第 1の光路に対して固定された第 1の視野を規定する第 2の光路と、前記第 1の視野と異なる第 2の視野を規定する第 3の光路と、前記第 2の光路と前記第 3の光路とを切り換えて前記第 1の光路と接続する切り換え手段であって、前記第 3の光路を前記手術顕微鏡の定点に対して回動して前記第 2の光路を遮断することにより前記第 3の光路を前記第 1の光路に切り換え接続する切り換え手段とを具備することを特徴とする。 [0006] According to the second technical aspect of the present invention, there is provided a surgical microscope capable of selecting different fields of view with respect to the objective optical system and eyepiece optical system provided in the first optical path, and the first optical path. A second optical path defining a first fixed visual field, a third optical path defining a second visual field different from the first visual field, the second optical path, and the third optical path Switching means for switching between the first optical path and the third optical path by rotating the third optical path with respect to a fixed point of the surgical microscope and blocking the second optical path. Switching means for switching and connecting to the first optical path.

図面の簡単な説明 Brief Description of Drawings

[0007] [図 1]図 1は、本発明の一実施形態に係る手術顕微鏡の下面に側視型延長鏡筒を取付けた状態を示す一部断面の側面図。 FIG. 1 is a partial cross-sectional side view showing a state in which a side-view extension lens barrel is attached to the lower surface of a surgical microscope according to one embodiment of the present invention.

[図 2]図 2は、側視型延長鏡筒のアタッチメント部以外の部分を回動させた状態を示す一部断面の側面図。 FIG. 2 is a partial cross-sectional side view showing a state in which a portion other than the attachment portion of the side-view extension lens barrel is rotated.

[図 3]図 3は、側視型延長鏡筒を示す斜視図。 FIG. 3 is a perspective view showing a side-view type extension lens barrel.

[図 4]図 4は、側視型延長鏡筒を示す断面図。 FIG. 4 is a cross-sectional view showing a side-view type extension lens barrel.

[図 5]図 5は、側視型延長鏡筒の上端部を上力見た状態を示す平面図。 FIG. 5 is a plan view showing a state in which the upper end portion of the side-view type extension lens barrel is viewed with an upper force.

[図 6]図 6は、手術顕微鏡のフランジを下から見た状態を示す底面図。 [FIG. 6] FIG. 6 is a bottom view showing a state in which the flange of the surgical microscope is viewed from below.

発明を実施するための最良の形態 BEST MODE FOR CARRYING OUT THE INVENTION

[0008] 以下、本発明の最良の実施形態を図 1〜図 6に基づいて説明する。手術顕微鏡 1 は立体顕微鏡であって、図示せぬバランス式のスタンド装置により釣り下げ支持されており、任意の位置及び姿勢で空中に停止させることができる。 Hereinafter, the best embodiment of the present invention will be described with reference to FIGS. The surgical microscope 1 is a stereoscopic microscope and is suspended by a balance-type stand device (not shown), and can be stopped in the air at an arbitrary position and posture.

[0009] 手術顕微鏡 1の下面部には、図 6に示すように、 2つの観察光取入口 2と、 1つの照明光照射口 3が設けられている。これらの観察光取入口 2及び照明光照射口 3は、下面部に形成されたフランジ 4の内部領域に設けられている。フランジ 4の外面には 4つの突起 5が形成されている。 [0009] As shown in FIG. 6, the observation microscope 1 is provided with two observation light inlets 2 and one illumination light irradiation port 3, as shown in FIG. The observation light inlet 2 and the illumination light irradiation port 3 are provided in the inner region of the flange 4 formed in the lower surface portion. Four protrusions 5 are formed on the outer surface of the flange 4.

[0010] 照明光照射口 3からは、光源（図示せず)から導かれた照明光 Aが下向きに照射される。観察光取入口 2からは立体視用として 2系統の観察光 Bを取入れることができる。取り入れられた 2系統の観察光 Bは、内部の対物光学系、ズーム光学系を経て、 2つの接眼部 6から、ドクターの 2つの瞳 7に導かれる。なお観察対象は手術顕微鏡 1 の重力下にある必要はなく下面部を観察対象 (Z方向）に向けてもよい。 [0010] From the illumination light irradiation port 3, illumination light A guided from a light source (not shown) is irradiated downward. It is. Two lines of observation light B can be taken in from the observation light inlet 2 for stereoscopic viewing. The two observation beams B thus taken are guided from the two eyepieces 6 to the two pupils 7 of the doctor through the internal objective optical system and zoom optical system. Note that the observation target need not be under the gravity of the surgical microscope 1, and the lower surface may be directed toward the observation target (Z direction).

[0011] 手術顕微鏡 1のフランジ 4には、下側 (顕微鏡の外方)から着脱自在な光路部材としての側視型延長鏡筒 8が取付けられる。側視型延長鏡筒 8は上端部 30よりも下端部 10の方が小径な筒状本体 11を有している。なお、説明の都合上側視型延長鏡筒の主軸方向を上下方向（z方向）とし、下面部のフランジ 4に取り付けられる側の基端部を上端部 30、それと反対側の先端部を下端部 10という。 On the flange 4 of the surgical microscope 1, a side-view-type extension lens barrel 8 is attached as an optical path member that is detachable from the lower side (outside of the microscope). The side-view-type extension lens barrel 8 has a cylindrical main body 11 whose lower end portion 10 is smaller in diameter than the upper end portion 30. For convenience of explanation, the main axis direction of the upper viewing-type extension lens barrel is the vertical direction (z direction), the base end on the side attached to the flange 4 on the lower surface is the upper end 30, and the opposite end is the lower end. Ten.

[0012] 本実施例では筒状本体 11の上端部 30は円筒形状で、その上部はアタッチメント部 12として分離可能である。アタッチメント部 12と上端部本体 9は対向位置にあるヒンジ部 13とストッパ部 14により連結されている。アタッチメント部 12の内面には手術顕微鏡 1のフランジ部 4と係合するための係合部材として 4つのノョネット溝 15が形成されている。 In the present embodiment, the upper end portion 30 of the cylindrical main body 11 has a cylindrical shape, and the upper portion thereof can be separated as the attachment portion 12. The attachment part 12 and the upper end main body 9 are connected by a hinge part 13 and a stopper part 14 which are located at opposite positions. On the inner surface of the attachment part 12, four knonet grooves 15 are formed as engaging members for engaging with the flange part 4 of the surgical microscope 1.

[0013] 側視型延長顕微鏡筒 8は上端部 30から下側部分にかけて幅が漸次狭くなる角筒形状を有し、下端部 10は有底形状である。下端部 10の側面には、照明窓 16と観察窓 17が上下に形成されている。側視型延長顕微鏡筒 8が手術顕微鏡 1に取り付けて使用される場合には、手術顕微鏡 1の観察光取入口 2を通る光路 LBは観察窓 17を通り、照明光照射口 3を通る光路 LAは照明窓 16を通る。観察窓 17には観察光 Bの光路 LBを直角に折り曲げるリフレクタとしてのプリズム 18が設けられ、照明窓 16には照明光 Aの光路 LAを斜め下方へ折り曲げるリフレクタとしてのプリズム 19が設けられている。 [0013] The side-view extension microscope tube 8 has a rectangular tube shape in which the width gradually decreases from the upper end portion 30 to the lower portion, and the lower end portion 10 has a bottomed shape. An illumination window 16 and an observation window 17 are formed vertically on the side surface of the lower end 10. When the side-view extension microscope tube 8 is used attached to the surgical microscope 1, the optical path LB passing through the observation light inlet 2 of the surgical microscope 1 passes through the observation window 17 and passes through the illumination light irradiation port 3 LA. Passes through the lighting window 16. The observation window 17 is provided with a prism 18 as a reflector for bending the optical path LB of the observation light B at a right angle, and the illumination window 16 is provided with a prism 19 as a reflector for bending the optical path LA of the illumination light A diagonally downward. .

[0014] 筒状本体 11における上端部 30よりも下方部分は、隔壁 20により照明光路 LAのための通路 21と観察光路 LBのための通路 22に区画されて照明光 Aと観察光 Bの干渉が遮断されており、それらの下端に前記プリズム 18、 19がそれぞれ設けられる。また、観察光路 22の途中には、観察像を正立化させる台形状のプリズム 23も設けられている。 [0014] The lower part of the cylindrical body 11 below the upper end 30 is partitioned by a partition wall 20 into a passage 21 for the illumination light path LA and a passage 22 for the observation light path LB. Interference is blocked, and the prisms 18 and 19 are provided at the lower ends thereof. Further, a trapezoidal prism 23 for erecting the observation image is also provided in the middle of the observation optical path 22.

[0015] 筒状本体 11の上端部 30には、中心軸が観察用通路 22に含まれるように設けられたレンズ 24が支持されて、る。レンズ 24の照明用通路 21に対応する部分には照明光を導入するための切欠 25が形成されている。手術顕微鏡 1からの照明光 Aを、レンズ 24の影響を受けずに、切欠 25からそのまま照明光路 21に導入することができるため、照明光路 21の設計が容易である。レンズ 24の上方には、 2系統の観察光 Bに対応する 2つの個別レンズ 26がそれぞれ設けられている。 [0015] At the upper end 30 of the cylindrical body 11, the central axis is provided so as to be included in the observation passage 22. The lens 24 is supported. A notch 25 for introducing illumination light is formed in a portion corresponding to the illumination passage 21 of the lens 24. The illumination light path 21 can be easily designed because the illumination light A from the surgical microscope 1 can be directly introduced into the illumination light path 21 from the notch 25 without being affected by the lens 24. Above the lens 24, two individual lenses 26 corresponding to two systems of observation light B are provided.

[0016] このような構造をした側視型延長鏡筒 8を、アタッチメント部 12のノョネット溝 15をフランジ 4の突起 5に係合させることにより取付ける。そして、手術顕微鏡 1とともに移動させて、筒状本体 11の小径の下端部 10をたとえば腔状患部 27の内部に挿入する。下端部 10が小径のため、挿入が容易である。 [0016] The side-view extension lens barrel 8 having such a structure is attached by engaging the knonet groove 15 of the attachment portion 12 with the protrusion 5 of the flange 4. Then, it is moved together with the surgical microscope 1 and the small-diameter lower end portion 10 of the cylindrical main body 11 is inserted into, for example, the cavities affected portion 27. Since the lower end 10 is small in diameter, it can be easily inserted.

[0017] そして、手術顕微鏡 1の照明光照射口 3から照射された照明光 Aを照明光路 21内に導き、プリズム 19で反射することにより照明窓 16から腔状患部 27の内壁 27aに向けて照射する。 [0017] Then, the illumination light A emitted from the illumination light irradiation port 3 of the surgical microscope 1 is guided into the illumination optical path 21 and reflected by the prism 19, so that it is directed from the illumination window 16 toward the inner wall 27a of the cavity affected part 27. Irradiate.

[0018] 腔状患部 27の内壁 27aで反射された反射光は、 2系統の観察光 Bとなって、観察窓 17から導入され、下端のプリズム 18により反射されて、観察用通路 22中を上向きに進む。観察用通路 22中では 2系統の観察光 Bが更にインバータとしての台形状のプリズム 23で反射されて正立化されると共に、互いに距離を広げながら上端部 30のレンズ 24に至る。 [0018] The reflected light reflected by the inner wall 27a of the cavity-like affected part 27 becomes two systems of observation light B, which is introduced from the observation window 17, reflected by the prism 18 at the lower end, and passed through the observation path 22 Proceed upward. In the observation path 22, two systems of observation light B are further reflected by a trapezoidal prism 23 as an inverter to be erected, and reach the lens 24 at the upper end 30 while increasing the distance from each other.

[0019] レンズ 24では拡大傾向にある 2つの観察光 Bの距離を接近させ、手術顕微鏡 1のフランジ 4内にある 2つの観察光取入口 2に確実に導き、手術顕微鏡 1による第 2の視野としての腔状患部 27の内壁 27aの立体観察を可能にする。 [0019] In the lens 24, the distance between the two observation lights B that are expanding is brought close to each other, and is surely guided to the two observation light inlets 2 in the flange 4 of the surgical microscope 1. This enables stereoscopic observation of the inner wall 27a of the cavity-like affected part 27 as a visual field.

[0020] 次に、第 1の視野としての腔状患部 27の底面 27bを観察したい場合には、ストッパ部 14を解除し、アタッチメント部 12以外の筒状本体 11をヒンジ部 13を中心に手術顕微鏡 1の観察範囲よりも外側へ回動させる。この場合、側視型延長鏡筒本体は手術顕微鏡に対してドクターの瞳のある側以外の位置（図ではドクターの瞳の反対側）に置かれることが好ましい。ヒンジ部の回動軸は対物光学系の光軸に交差する方向を向き、典型的には直交する方向を向く。回動角度は側視型延長鏡筒が第 1の視野を遮蔽しない程度であればよく複数位置に設定してもよい。そうすることにより、手術顕微鏡 1の照明光照射口 3より照射した照明光 Aを腔状患部 27の底面 27bに当てることができ、底面 27bで反射された観察光 Bを観察光取入口 2より取り入れて観察することができる。 Next, when it is desired to observe the bottom surface 27b of the cavity-like affected part 27 as the first visual field, the stopper part 14 is released, and the cylindrical body 11 other than the attachment part 12 is operated around the hinge part 13. Rotate outside the observation range of microscope 1. In this case, it is preferable that the side-view-type extension barrel main body is placed at a position other than the side where the doctor's pupil is located with respect to the surgical microscope (in the figure, opposite to the doctor's pupil). The rotation axis of the hinge part is oriented in a direction intersecting the optical axis of the objective optical system, and typically in a direction perpendicular to the optical axis. The rotation angle may be set at a plurality of positions as long as the side-view-type extension barrel does not shield the first visual field. By doing so, the illumination light A irradiated from the illumination light irradiation port 3 of the surgical microscope 1 can be applied to the bottom surface 27b of the cavity-like affected part 27. The observation light B reflected from the bottom surface 27b can be taken in through the observation light inlet 2 and observed.

[0021] なお、アタッチメント部 12は筒状本体 11の上端部 30と一体の構造とすることができる。また、手術顕微鏡 1の使用形態は下向きば力りでなぐ横向きに使用される場合もある。側視型延長鏡筒 8における照明光路 LAには光ファイバ一を媒体として用いても良い。 [0021] Note that the attachment part 12 can be structured integrally with the upper end part 30 of the cylindrical main body 11. In addition, the operating mode of the surgical microscope 1 may be used in a sideways direction where the force is applied downward. An optical fiber may be used as the medium for the illumination light path LA in the side-view extension lens barrel 8.

[0022] 上述したように側視型延長顕微鏡筒 8の上端部 30は手術顕微鏡 1のフランジ部 4と係合し 2つの光路を切り換える切り換え手段である。すなわち、側視型延長顕微鏡筒 8を有する手術顕微鏡 1はその定点に対して位置固定された第 1の光路としての観察光路 LAおよび照明光路 LBを有する。図 2に示すように側視型延長顕微鏡筒が外側に回動された場合 (第 1の状態）には第 1の視野 27bを規定する第 2の光路 L1としての観察光路および照明光路が選択される。第 2の光路 L1と第 1の光路（図示せず）は光軸が一致しているので第 1の視野 27bは手術顕微鏡の定点または第 1の光路に対して位置固定されてヽる。側視型顕微鏡筒 8が手術顕微鏡 1に取り付けられてヽる場合にはアタッチメント部に定点を設定してもよい。 As described above, the upper end portion 30 of the side-view-type extension microscope tube 8 is a switching means that engages with the flange portion 4 of the surgical microscope 1 and switches between the two optical paths. That is, the surgical microscope 1 having the side-view-type extension microscope tube 8 has an observation optical path LA and an illumination optical path LB as the first optical path fixed to the fixed point. As shown in Fig. 2, when the side-view extension microscope tube is rotated outward (first state), the observation optical path and illumination optical path are selected as the second optical path L1 that defines the first visual field 27b. Is done. Since the optical axes of the second optical path L1 and the first optical path (not shown) coincide with each other, the first visual field 27b is fixed with respect to the fixed point of the surgical microscope or the first optical path. When the side-viewing microscope tube 8 is attached to the surgical microscope 1, a fixed point may be set in the attachment part.

[0023] 一方側視型延長顕微鏡筒のアタッチメント部 12と上端部本体 9がヒンジ部 13とストツバ部 14により連結されている場合 (第 2の状態）には第 1の視野と異なる第 2の視野 27aを規定する第 3の光路 L2としての観察光路 LBおよび照明光路 LAが選択される。この場合には第 3の光路の移動によって固定された第 2の光路が結果的に遮断される。したがって側視型延長顕微鏡を備えた手術顕微鏡は異なる視野を切り換えて選択することが可能な手術用顕微鏡である。ここで異なる視野とは倍率の異なる光学系が有する包含関係にある視野ではなぐそれぞれが共通しない領域を含む視野をいう。 [0023] When the attachment part 12 and the upper end main body 9 of the one-side-view-type extension microscope tube are connected by the hinge part 13 and the stocker part 14 (second state), the second different from the first visual field The observation optical path LB and the illumination optical path LA are selected as the third optical path L2 that defines the visual field 27a. In this case, the second optical path fixed by the movement of the third optical path is blocked as a result. Therefore, a surgical microscope equipped with a side-viewing extension microscope is a surgical microscope that can switch between different fields of view. Here, different visual fields refer to visual fields including regions that are not common to the visual fields that are in an inclusive relationship of optical systems having different magnifications.

[0024] なお、本実施形態では側視型延長鏡筒本体がヒンジ部 13により回動する構成としたが、側視型延長顕微鏡筒本体を対物光学系の光軸に対してたとえば 45度傾斜した回動軸を有するレボルバに取り付けて光路の切り換えを行っても良い。すなわち、上端部 30がレボルバを具備し、レボルバには第 3の光路 L2に設けられる側視型延長顕微鏡筒本体が取り付けられるとともに第 2の光路 L1が通る開口部が設けられる。したがってレボルバの回動によって第 2の光路と第 3の光路が切り換えられる。第 3の光路 L2が選択される場合には位置固定された第 2の光路 L1を遮断することによって第 3の光路 L2が第 1の光路に接続される。さらに第 1の視野および第 2の視野とは異なる第 3の視野を有する第 2の側視型延長顕微鏡筒本体をレボルバに取り付けて光路の切り換えを行ってもょ、。 In the present embodiment, the side-view extension lens barrel body is configured to rotate by the hinge portion 13, but the side-view extension microscope tube body is tilted by, for example, 45 degrees with respect to the optical axis of the objective optical system. The optical path may be switched by attaching to a revolver having the rotating shaft. That is, the upper end 30 is provided with a revolver, and the revolver is provided with an opening through which the second optical path L1 is attached and a side-view-type extension microscope tube main body provided in the third optical path L2 is attached. Therefore, the second optical path and the third optical path are switched by the rotation of the revolver. When the third optical path L2 is selected, the third optical path L2 is connected to the first optical path by blocking the second optical path L1 whose position is fixed. In addition, the second side-view extended microscope tube body having a third field of view different from the first field of view and the second field of view may be attached to the revolver to switch the optical path.

[0025] 発明の効果 [0025] Effect of the Invention

本発明の第 1の技術的側面によれば、筒状本体の下端部を腔状患部の内部へ挿入し、手術顕微鏡力の照明光を下端部の照明窓力内壁に対して横向きに照射でき、内壁で反射された横向きの観察光を観察窓から取り入れて、手術顕微鏡側へ導くことができるため、腔状患部の内壁も確実に観察することができる。 According to the first technical aspect of the present invention, the lower end portion of the cylindrical main body is inserted into the affected part of the cavity, and the illumination light of the surgical microscope force is irradiated laterally with respect to the inner wall of the illumination window force at the lower end portion. In addition, since the lateral observation light reflected from the inner wall can be taken from the observation window and guided to the surgical microscope side, the inner wall of the cavity-like affected part can also be observed reliably.

[0026] また、アタッチメント部を手術顕微鏡に取付けた状態のまま、筒状本体をヒンジ部を中心に手術顕微鏡の観察範囲よりも外側へ回動させることにより、腔状患部の底面も通常通りに観察することができる。さらに、筒状本体の上端部に 2系統の観察光を接近させるレンズが配置されるため、小径の下端部から大径の上端部へ向けて距離を広げながら導かれた 2系統の観察光も、レンズで距離を接近させて、手術顕微鏡の 2 つの観察光取入口に確実に取込むことができる。手術顕微鏡の照明光照射口から照射した照明光を、レンズの影響を受けずに、切欠力そのまま照明光路に導入することができるため、照明光路の設計が容易になる。 [0026] In addition, with the attachment part attached to the surgical microscope, the bottom surface of the cavity-like affected part is also restored as usual by rotating the cylindrical main body around the hinge part to the outside of the observation range of the surgical microscope. Can be observed. In addition, because the lens that closes the two systems of observation light is arranged at the upper end of the cylindrical body, the two systems of observation light are introduced while increasing the distance from the lower end of the small diameter toward the upper end of the large diameter. However, the distance can be approached with a lens and it can be reliably taken into the two observation light inlets of the surgical microscope. The illumination light irradiated from the illumination light irradiation port of the surgical microscope can be directly introduced into the illumination light path without being affected by the lens, so that the design of the illumination light path becomes easy.

[0027] 本発明の第 2の技術的側面によれば、手術用顕微鏡が定位置に固定された視野を有する光路とそれと異なる視野を有する光路を切り換え接続する切り換え手段を具備するので、施術中のドクターが容易な操作で視野を切り換えることができる。また、立体顕微鏡に適用できるため患部の異なる視野領域を立体視することができる。 [0027] According to the second technical aspect of the present invention, the surgical microscope includes switching means for switching and connecting an optical path having a visual field fixed at a fixed position and an optical path having a different visual field. The doctor inside can switch the field of view with easy operation. In addition, since it can be applied to a stereoscopic microscope, it is possible to stereoscopically view different visual field regions of the affected area.

Claims

請求の範囲 The scope of the claims

[1] 照明光照射口と観察光取入口を下面部に有する手術顕微鏡に取付けて使用される手術顕微鏡用の側視型延長鏡筒であって、 [1] A side-view extension lens barrel for a surgical microscope used by being attached to a surgical microscope having an illumination light irradiation port and an observation light inlet on the bottom surface,

上端部よりも下端部の方が小径な筒状本体と、 A cylindrical body having a smaller diameter at the lower end than at the upper end;

前記筒状本体の上端部に設けられるアタッチメント部であって、手術顕微鏡の下面部における照明光照射口と観察光取入口が形成された領域に取付自在なアタッチメント部と、 An attachment portion provided at an upper end portion of the cylindrical main body, the attachment portion being attachable to a region where an illumination light irradiation port and an observation light intake port are formed on a lower surface portion of the surgical microscope;

筒状本体の下端部に形成され側面に観察窓と照明窓を有する有底構造と、筒状本体の内部に設けられる光路であって、観察窓力の立体観察用の 2系統の観察光を観察光取入口に導く観察光路と照明光照射ロカの照明光を照明窓に導く照明光路とを有する光路と A bottomed structure formed at the lower end of the cylindrical main body and having an observation window and an illumination window on the side surface, and an optical path provided inside the cylindrical main body, which provides two types of observation light for stereoscopic observation of the observation window force An optical path having an observation optical path that leads to the observation light inlet and an illumination optical path that guides the illumination light from the illumination light irradiation locus to the illumination window;

を具備することを特徴とする手術顕微鏡用の側視型延長鏡筒。 A side-view extension lens barrel for a surgical microscope characterized by comprising:

[2] 請求項 1記載の手術顕微鏡用の側視型延長鏡筒であって、 [2] A side-view extension lens barrel for a surgical microscope according to claim 1,

アタッチメント部が、筒状本体の上端部と分離された状態でヒンジ部及びストツバ部を介して連結され、ストツバ部を解除することにより、アタッチメント部を手術顕微鏡に取付けた状態のまま筒状本体の他の部分をヒンジ部を中心に手術顕微鏡の観察範囲よりも外側へ回動自在なことを特徴とする手術顕微鏡用の側視型延長鏡筒。 The attachment part is separated from the upper end part of the cylindrical main body and is connected via the hinge part and the strobe part. By releasing the stagger part, the attachment part remains attached to the surgical microscope while the attachment part is attached to the surgical microscope. A side-viewing-type extension lens barrel for a surgical microscope characterized in that the other part can be pivoted outwardly from the observation range of the surgical microscope around the hinge.

[3] 請求項 1又は請求項 2記載の手術顕微鏡用の側視型延長鏡筒であって、 [3] A side-view extension lens barrel for a surgical microscope according to claim 1 or claim 2,

筒状本体の上端部に 2系統の観察光を接近させるレンズが配置されていることを特徴とする手術顕微鏡用の側視型延長鏡筒。 A side-view extension lens barrel for a surgical microscope, characterized in that a lens that allows two lines of observation light to approach the upper end of the cylindrical body.

[4] 請求項 3記載の手術顕微鏡用の側視型延長鏡筒であって、 [4] A side-view extension lens barrel for a surgical microscope according to claim 3,

レンズの照明光路に対応する部分に切欠が形成されていることを特徴とする手術顕微鏡用の側視型延長鏡筒。 A side-view-type extension lens barrel for a surgical microscope, wherein a notch is formed in a portion corresponding to an illumination optical path of a lens.

[5] 異なる視野が選択可能な手術用顕微鏡であって、 [5] A surgical microscope with different fields of view,

第 1の光路に設けられた対物光学系および接眼光学系と An objective optical system and an eyepiece optical system provided in the first optical path;

前記手術用顕微鏡の定点に対して位置固定された第 1の視野を規定する第 2の光路と、 A second optical path defining a first field of view fixed relative to a fixed point of the surgical microscope;

前記第 1の視野と異なる第 2の視野を規定する第 3の光路と、前記第 2の光路と前記第 3の光路とを切り換えて前記第 1の光路と接続する切り換え手段であって、前記第 3の光路を前記定点に位置固定された回動軸のまわりに回動して前記第 2の光路を遮断することにより前記第 3の光路を前記第 1の光路に置き換えて接続する切り換え手段と A third optical path defining a second field of view different from the first field of view; Switching means for switching between the second optical path and the third optical path to connect to the first optical path, wherein the third optical path is arranged around a rotation axis fixed at the fixed point. Switching means for rotating and blocking the second optical path to replace and connect the third optical path to the first optical path;

を具備することを特徴とする手術用顕微鏡。 A surgical microscope characterized by comprising:

[6] 前記切り換え手段の前記第 3の光路の回動軸は前記第 1の光路に交差する方向を向くことを特徴とする請求項 5記載の手術用顕微鏡。 6. The surgical microscope according to claim 5, wherein a rotation axis of the third optical path of the switching unit is directed in a direction intersecting the first optical path.

[7] 前記第 1の光路、第 2の光路および第 3の光路はそれぞれ前記手術用顕微鏡の光源に接続される照明用光路および前記対物光学系および接眼光学系に接続される観察用光路からなることを特徴とする請求項 5又は 6記載の手術用顕微鏡。 [7] The first optical path, the second optical path, and the third optical path are an illumination optical path that is connected to a light source of the surgical microscope, and an observation optical path that is connected to the objective optical system and the eyepiece optical system, respectively. The surgical microscope according to claim 5 or 6, characterized by comprising:

[8] 前記手術用顕微鏡は立体顕微鏡であって一対の対物光学系および接眼光学系を有し、前記観察用光路は 2つの観察用光路を有することを特徴とする請求項 7記載の手術用顕微鏡。 8. The surgical microscope according to claim 7, wherein the surgical microscope is a stereoscopic microscope and has a pair of objective optical system and eyepiece optical system, and the observation optical path has two observation optical paths. microscope.

[9] 前記第 3の光路に設けられるリフレクタであって前記第 1の視野と異なる前記第 2の視野を規定するように前記第 3の光路を折り曲げるものを具備することを特徴とする請求項 8記載の手術用顕微鏡。 9. A reflector provided in the third optical path, wherein the third optical path is bent so as to define the second field of view different from the first field of view. 8. The surgical microscope according to 8.