JP2000083965A - Microscope medical operation - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a microscope for medical operation capable of efficiently operating a treating tool to be used for medical operation. SOLUTION: This microscope for medical operation is provided with a three- dimensional optical system 7 for projecting a part to be operated, a pair of eyepieces 8 for expansion-observing the optical image of the part to be operated image-formed by this system 7, a second observing optical system 17 for projecting a part to be operated peripheral part in an optical path divided by a beam splitter 12 arranged in the middle part of the system 7, and a perforated mirror 23 in the state of a doughnut displaying the part to be operated peripheral part of this system 17 in the visual field of the eyepieces 8. By this constitution, the image of a part to be operated and the image of a part surrounding the part to be operated including the treating tool can simultaneously be observed in the same visual field, thereby the treating tool can efficiently be operated.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a surgical microscope for performing micro-surgery.

[0002]

2. Description of the Related Art As shown in FIG. 8, a general surgical microscope 1 conventionally used includes a mirror body 2 having a built-in stereoscopic optical system for stereoscopically observing a surgical site, and this mirror body. And a gantry 4 having an arm 3 that can move the camera 2 in a desired position and direction in three dimensions. The above stand 4
Is provided with a lighting device, and a light beam emitted from the lighting device illuminates the operation site via a light guide of the gantry 4 and a three-dimensional optical system inside the mirror body 2. The surgical site can be three-dimensionally observed by the three-dimensional optical system.

Such a surgical microscope 1 performs a so-called surgical operation using forceps such as a scalpel or scissors and an energy treatment tool such as a bipolar probe or an ultrasonic scalpel probe while observing a surgical site in an enlarged manner. Used for microsurgery (microsurgery).

[0004] In this microsurgery, when using a treatment tool such as forceps or an energy treatment tool, the surgeon gives an instruction to the assistant by saying "scalpel" or "bipolar" to give a necessary treatment tool. Handed by assistant.

[0005] However, in this method, the operator has to use the treatment tool via the assistant, so that the usability of the treatment tool is poor. Therefore, a pocket 6 is provided in the vicinity of the surgical site where the operator can reach the sterile cloth 5 hung on the surgical site of the patient, and a frequently-used treatment tool is stored in the pocket 6 so that the operator can perform the treatment by himself. A method for removing the tool has been considered.

In addition, when using an energy treatment device in microsurgery, it is necessary to use the energy treatment device while checking setting information such as the output mode and the energy value of the energy treatment device.
In this case, the surgeon asked the assistant to confirm the setting information, or looked away from the finder of the surgical microscope and confirmed the display of the setting information of the energy treatment tool by himself.

Japanese Patent Application Laid-Open No. Sho 62-166310 discloses a stereoscopic image of a sub-observation optical system arranged near a microscope.
There is disclosed a technique for displaying an image in a visual field of a stereomicroscope.
Japanese Patent Application Laid-Open No. 60-111627 discloses that in a surgical slit lamp in which an operator performs laser treatment on a patient's eye, a laser energy level and a beam width are displayed around an optical image of the surgical slit lamp. Techniques are disclosed.

Further, Japanese Patent Application Laid-Open No. Hei 6-178761 discloses a technique in which a display unit is provided around an optical image of a fundus oculi observation device to display a filter type, a timer display and the like at the time of photographing.

[0009]

However, as described above, every time the treatment tool is taken out of the pocket, the eye must be taken away from the finder of the microscope, which makes the operation complicated and inefficient.

In the stereomicroscope disclosed in Japanese Patent Application Laid-Open No. Sho 62-166310, the auxiliary observation optical system picks up only a part of a narrow range. Even if they are arranged, it is impossible to capture an image of a wide range enough to grasp the entire image of the treatment tool. In addition, since the relative position of the sub-observation optical system is variable with respect to the stereomicroscope, it is difficult to grasp the relative positional relationship between the image of the sub-observation optical system displayed in the microscope field of view and the observation image of the microscope. In addition, the treatment tool cannot be observed within the visual field of the microscope. Therefore, even if the technique as described above is used, it is not possible to simultaneously and efficiently observe the operative image and the treatment instrument images arranged around the operative part in the same visual field.

Also, in the case of using the energy treatment device, as described above, in order to confirm the setting information of the energy treatment device, it is necessary to ask the assistant or to keep his / her eyes away from the finder portion, so that the energy treatment device must be checked. The operation is cumbersome and inefficient.

Further, in the techniques disclosed in JP-A-60-111627 and JP-A-6-178761, it is not possible to select whether or not to display, so that even if no display is required, the display is performed. This may cause eyestrain and make it impossible to concentrate on the operation, which may increase operator fatigue. Furthermore, when adding a new setting item or responding to various treatment tools, it is difficult to easily display it in the field of view.

The present invention has been made in view of such circumstances, and an object of the present invention is to provide a surgical microscope capable of efficiently operating a treatment tool used for surgery.

[0014]

According to the present invention, there is provided a first observation optical system for enlarging and observing an operation part, and a second observation optical system for observing a periphery of the operation part which is wider than the observation field of view of the first observation optical system. And a finder optical system for simultaneously observing the image of the operation part of the first observation optical system and the peripheral image of the operation part of the second observation optical system within the visual field of the microscope.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS (First Embodiment) A first embodiment according to the present invention will be described with reference to FIGS. 1 is a configuration diagram of an operating microscope, FIG. 2 is a diagram showing a shape of a perforated mirror, FIG. 3 is a diagram showing information from a workstation on a monitor, and FIG. 4 is a view of a field of view of an eyepiece observed by an operator. FIG.

As shown in FIG. 1, a mirror 2 of a surgical microscope 1 has a Galileo type stereoscopic optical system 7 as a first observation optical system and a surgical part formed by the stereoscopic optical system 7. It has a pair of eyepieces 8 which are finder optical systems for magnifying and observing an optical image.

The three-dimensional optical system 7 includes an objective lens 9 for projecting the illuminated operation part in order from the operation part side, a beam splitter 12 for dividing the optical path of the objective lens 9 into a vertical optical path 10 and a parallel optical path 11. , A pair of variable-magnification optical systems 13 for changing the magnification, and a pair of imaging lenses 14 for forming an optical image of the operative part of the objective lens 9. FIG. 1 shows only one of the pair of zoom optical systems 13, the pair of imaging lenses 14, and the pair of eyepieces 8.

The mirror body 2 includes a beam splitter 12.
An imaging lens 15 for forming an image of the light beam deflected to the parallel optical path 11 in the parallel optical path 11 divided by the above-mentioned method, and an imaging lens 15 is provided at an imaging position of the imaging lens 15 to convert an optical image into an electric signal. Second observation optical system 1 composed of imaging element 16
7 are provided.

The imaging range of the image pickup device 16 extends to the periphery of the operative part, which is wider than the operative part projected by the three-dimensional optical system 7.
The imaging lens 15 is designed such that the projection magnification of the second observation optical system 17 is lower than the projection magnification of the stereoscopic optical system 7.

The image pickup device 16 has a camera control unit (hereinafter, referred to as a camera control unit) that converts an electric signal into a standardized video signal.
CCU) 18 and this CCU 18
Is a video mixer 20 for superimposing a video signal from a navigation device 19 to be described later on a video signal from the CCU 18.
It is connected to the.

Further, a monitor 2 built in the mirror body 2
1 is connected to the CCU 18 via the video mixer 20, and the video mixer 20 is connected to the navigation device 19.

Behind the monitor 21, an image forming lens 22 for forming an image on the monitor 21 and an image forming lens 14 for displaying an optical image of the image forming lens 22 in the field of view of the eyepiece 8. A perforated mirror 23 is provided between the lens and the eyepiece 8.

The perforated mirror 23 has a donut shape.
As shown in FIG. 2, a transmission part 2 having a hole in the center is provided.
4 and a reflection part 25 which is mirror-processed in the peripheral part. The perforated mirror 23 is disposed so that the optical axis 26 of the vertical optical path 10 passes through the vicinity of the center of the transmission section 24, and the image of the operation section of the stereoscopic optical system 7 and the second observation optical system 1
7 is tilted at a predetermined angle with respect to the optical axis 26 of the vertical optical path 10 so that the image of the peripheral part of the operation part 7 does not rotate relatively within the field of view of the eyepiece 8 and the relative angles substantially match.

The inner diameter of the transmitting portion 24 is large enough to transmit the light flux of the image of the operation site of the three-dimensional optical system 7 and to transmit the light beam from the image of the operation site on the monitor 21. are doing. The reflecting section 25 has an area that reflects a light beam sufficient to form an image of the peripheral part of the operative site among the images on the monitor 21.

A sterile cloth 5 is hung around the surgical site, and a bipolar probe 27 and an ultrasonic scalpel probe 28, which are known energy treatment tools, are placed on the side of the sterile cloth 5.
Is provided. The pocket 6 is disposed at a position where the pocket 6 is projected by the second observation optical system 17 described above.

Further, a known optical navigation device 19 is arranged around the mirror body 2. The optical navigation device 19 includes an index 2 provided on the mirror 2.
a, a digitizer 29 for imaging an index 27a installed on the bipolar probe 27 and an index 28a installed on the ultrasonic scalpel probe 28 with a plurality of TV cameras, and an index 2a, an index 27a and an index 28a imaged by the digitizer 29 And a workstation 30 that analyzes the image of the above and calculates the three-dimensional coordinates of these indices.

On the other hand, the bipolar probe 27 and the ultrasonic scalpel probe 28 are connected to a work station 30 via a bipolar power supply 31 and an ultrasonic scalpel power supply 32, respectively. It is connected to the video mixer 20 via signal output means.

Bipolar power supply 31 and ultrasonic scalpel power supply 3
Numeral 2 is set so that various setting information such as the type of output such as coagulation and incision of the bipolar probe 27 and the ultrasonic scalpel probe 28 and the amount of energy to be output are always transmitted to the workstation 30.

When the relative position between the mirror body 2 and the bipolar probe 27 or the relative position between the mirror body 2 and the ultrasonic scalpel probe 28 becomes smaller than a predetermined distance, the workstation 30 transmits the received setting information. It is set so as to be output to the video mixer 20 as a video signal via a video signal output means (not shown). Here, the output video signal is, for example, when both the bipolar probe 27 and the ultrasonic scalpel probe 28 exist within a predetermined distance or less,
The image is as shown in FIG. Of course, when one or both of the bipolar probe 27 and the ultrasonic scalpel probe 28 are separated from the mirror 2 by a predetermined distance or more, the corresponding display disappears from the screen of the monitor 21.

Next, the operation will be described. The illumination light emitted from the illumination device illuminates from the operative portion to the peripheral portion of the operative portion where the pocket 6 is provided. The illuminated luminous flux from the operative part and the peripheral part of the operative part passes through the objective lens 8 and then passes through the beam splitter 11 to the vertical optical path 10 and partially reflects to the parallel optical path 11. Of the light fluxes transmitted through the vertical optical path 10 to the peripheral portion of the operation portion, only the light beam from the operation portion is imaged by the imaging lens 13. Then, the optical image of the operative part passes through the transmission part 24 of the perforated mirror 23, enters the eyepiece 8, and is enlarged by the eyepiece 8.

The light beam reflected by the beam splitter 11 to the parallel optical path 11 forms an image up to the peripheral portion of the operative site on the imaging device 16 by the imaging lens 15. The optical image up to the peripheral part of the operative site is converted into an electric signal by the
The signal is input to the CU 18, converted into a standardized video signal by the CCU 18, and input to the video mixer 20.

The index 2a, the index 27a and the index 28a are photographed by the digitizer 29, and the images are transferred to the workstation 30. And workstation 3
Each index is identified by 0, and the three-dimensional coordinates of the mirror body 2, the bipolar probe 27, and the ultrasonic scalpel probe 28 are calculated.

On the other hand, various setting information of the energy treatment tool is constantly transmitted from the bipolar power supply 31 and the ultrasonic scalpel power supply 32 to the workstation 30. At the workstation 30, the mirror body 2, the bipolar probe 27 and the ultrasonic scalpel probe From the three-dimensional coordinates of 28, both the bipolar probe 27 and the ultrasonic scalpel probe 28
Only when the distance is less than or equal to the predetermined distance, the above-described various setting information is transmitted from the workstation 30 to the video mixer 20 and output to the monitor 21. When one or both of the bipolar probe 27 and the ultrasonic scalpel probe 28 are separated from the mirror 2 by a predetermined distance or more, the display of the setting information disappears from the screen of the monitor 21.

The image displayed on the monitor 21 enters the imaging lens 22 and then enters the perforated mirror 23. In the perforated mirror 23, a light beam sufficient to form an image around the surgical site is reflected by the reflection unit 25, and is incident on one of the pair of eyepieces 8. However, the luminous flux from the operative portion that passes through the transmitting portion 24 of the perforated mirror 23 is not reflected as it is, but passes through the perforated mirror 23 and is absorbed inside the not-shown inner wall surface of the mirror body 2.

In the field of view of the eyepiece 8, as shown in FIG. 4, the operative image is displayed at the center of the field, and the pocket 6,
An image of the peripheral part of the operative site including the bipolar probe 27 and the ultrasonic scalpel probe 28 is displayed in the peripheral part of the visual field. Also,
Only when both the bipolar probe 27 and the ultrasonic scalpel probe 28 approach the mirror body 2 within a predetermined distance or less, the coagulation of the bipolar probe 27 and the ultrasonic scalpel probe 28
Various setting information such as the type of output such as incision and the amount of energy to be output are displayed at the top of the field of view.

Next, effects of the first embodiment will be described. At the same time as observing the surgical site with the eyepiece, it is possible to observe the peripheral part of the surgical site where a pocket for storing the treatment tool etc. is arranged, and the surgeon alone needs the treatment tools etc. without keeping the eyes from the eyepiece Can be selected from the pocket, so that the treatment tool can be operated efficiently. Therefore, by using this surgical microscope, it is possible to shorten the operation time, reduce the fatigue of the operator, reduce the burden on the patient, and the like.

In addition, the second observation optical system projects the peripheral portion of the operation site at a magnification lower than the projection magnification of the stereoscopic optical system.
It is possible to observe a wide area around the operative part, to grasp a substantially entire image of the operative part peripheral part, and to improve the operability of the treatment tool.

Further, if the second observation optical system is used, it becomes possible to perform macro photography of the surgical site using a conventional television camera attached to an operating light or the like, and since a macro television camera is not required, the cost is reduced. It is possible to provide a surgical microscope apparatus that is simple. Further, since the second observation optical system is built in the mirror body, it is possible to prevent the operator's head and the mirror body from interfering with the imaging field during macro imaging.

Further, since the perforated mirror is inclined at a predetermined angle with respect to the optical axis of the vertical optical path so that the relative angle between the image of the surgical site and the image of the peripheral portion of the surgical site substantially coincides with each other. It is easy to grasp the positional relationship with the peripheral part of the surgical site.

Further, since the optical navigation device is provided, various kinds of setting information such as the type of output such as coagulation and incision of the bipolar probe and the ultrasonic scalpel probe and the amount of energy to be output are stored in the visual field of the eyepiece. The displayed various setting information can be confirmed without removing the eye from the eyepiece, and the energy treatment device can be operated efficiently.

Various setting information of an energy treatment tool such as a bipolar probe or an ultrasonic scalpel probe can be easily displayed in a field of view by changing a setting of a workstation. It can respond to various treatment tools and the like.

Further, since various setting information of the energy treatment tool such as a bipolar probe is displayed only when the distance between the mirror body and the energy treatment tool becomes less than a predetermined distance, the information display is unnecessary. Will not be displayed if the energy treatment tool is separated from the mirror by a predetermined distance,
The field of view becomes clear, so that the operator can concentrate on the operation and reduce the fatigue of the operator.

(Second Embodiment) An operating microscope according to a second embodiment will be described with reference to FIGS.
5 is a diagram showing the configuration of the surgical microscope, FIG. 6 is a diagram showing the shape of a perforated mirror, and FIG. 7 is a diagram showing the inside of the field of view of an eyepiece observed by an operator. Hereinafter, the same components as those of the first embodiment are denoted by the same reference numerals, and description thereof is omitted.

As shown in FIG. 5, the mirror body 2 of the operating microscope 1 has a Galileo type stereoscopic optical system 40 as a first observation optical system and a second optical system 40 provided in parallel with the stereoscopic optical system 40.
And an observation optical system 41.

The three-dimensional optical system 40 sequentially includes an objective lens 42 for projecting an illuminated operation part, a pair of variable-magnification optical systems 43 for changing magnification, and an optical image of the operation part of the objective lens 42 from the operation part side. It is composed of a pair of imaging lenses 44 for forming an image.

A perforated mirror 45 is provided between the imaging lens 44 and the eyepiece 8. Note that FIG. 5 illustrates only one of the pair of variable power optical systems 43, the pair of imaging lenses 44, and the pair of eyepieces 8.

The second observation optical system 41 includes an objective lens 46
And an image forming lens 47 for forming an optical image of the objective lens 46, and an image pickup device 48 at an image forming position of the image forming lens 47.
It is composed of

The image pickup range of the image pickup device 48 of the second observation optical system 41 is a range up to the peripheral portion of the operation part, which is wider than the operation part projected by the three-dimensional optical system 40. In particular, the second observation optical system 4
Numeral 1 is attached to the three-dimensional optical system 40 so as to be close to the pocket 6 so that the peripheral portion of the surgical site on which the pocket 6 is provided can be widely imaged. The objective lens 46 and the imaging lens 47 are designed so that the projection magnification of the second observation optical system 41 is lower than the projection magnification of the stereoscopic optical system 40.

As shown in FIG. 6, the shape of the perforated mirror 45 is such that the transmitting portion 49 provided at a position shifted downward from the center of the perforated mirror 45 and the reflecting portion 5 which is mirror-processed.
0. The perforated mirror 45 is arranged so that the optical axis 51 of the stereoscopic optical system 40 passes near the center of the transmission section 24, and the surgical image of the stereoscopic optical system 40 and the surgical image of the second observation optical system 41. It is inclined at a predetermined angle with respect to the optical axis 51 of the three-dimensional optical system 40 so that the peripheral image does not relatively rotate within the visual field of the eyepiece 8 and the relative angles substantially match.

The inner diameter of the transmitting section 49 is large enough to transmit the light flux of the operation image of the stereoscopic optical system 40 and to transmit the light flux of the operation image of the second observation optical system 41. have. The reflecting section 50 has an area enough to reflect a light flux sufficient to form an image of the peripheral portion of the operation portion among the images on the monitor 21, and particularly, the pocket 6 in the peripheral portion of the operation portion.
It reflects a lot of light rays on the side.

Also, a known optical navigation device 19 is arranged similarly to the first embodiment. In the optical navigation device 19, unlike the first embodiment, the workstation 52 displays various setting information near the images of the bipolar probe 27 and the ultrasonic scalpel probe 28 in the field of view of the eyepiece 8. Thus, it is designed so that the position of each index on the screen of the monitor 21 can be specified, and this position information is output to the video mixer 20 simultaneously with various setting information of the energy treatment tool. Is set.

Next, the operation will be described. The illumination light emitted from the illumination device illuminates from the operative portion to the peripheral portion of the operative portion where the pocket 6 is provided. The luminous flux from the illuminated region to the periphery of the surgical site passes through the objective lens 42,
Of the light flux to the peripheral part of the operation part, only the light part of the operation part is imaged by the imaging lens 44. The optical image of the operation part passes through the transmission part 49 of the perforated mirror 45 and is incident on the eyepiece 8 and is enlarged by the eyepiece 8.

Further, the light beam from the peripheral part of the operative site where the pocket 6 is provided is imaged on the image pickup element 48 by the objective lens 46 and the image forming lens 47 of the second observation optical system 41. The optical image of the peripheral part of the operation part is displayed on the monitor 21 via the CCU 18 and the video mixer 20, and various setting information of the bipolar probe 27 and the ultrasonic scalpel probe 28 are also calculated by the optical navigation device 19. 27 and ultrasonic scalpel probe 28
The video data is superimposed and displayed on the monitor 21 in accordance with the distance between the camera body 2 and the mirror 2.

The image displayed on the monitor 21 enters the perforated mirror 45 from the imaging lens 22. In the perforated mirror 45, light rays sufficiently enter the reflecting portion 50 to form an image around the operation portion, and enter one of the pair of eyepieces 8.
However, the luminous flux of the operative part that passes through the transmitting part 49 of the perforated mirror 45 is not reflected as it is, passes through the perforated mirror 45, and is absorbed inside the inner wall surface (not shown) of the mirror body 2.

In the field of view of the eyepiece 8, as shown in FIG.
An image of the peripheral part of the operative site including the bipolar probe 27 and the ultrasonic scalpel probe 28 is displayed below the visual field.

Only when both the bipolar probe 27 and the ultrasonic scalpel probe 28 have approached the mirror body 2 within a predetermined distance or less, the types and outputs of the coagulation and incision of the bipolar probe 27 and the ultrasonic scalpel probe 28 have been determined. Various setting information such as the amount of energy to be applied is displayed near the corresponding energy treatment tool.

Next, effects of the second embodiment will be described. In the second embodiment, in addition to the effects of the first embodiment, the second observation optical system that projects the peripheral part of the surgical site has its own objective lens, and is closer to the pocket side. It is provided in parallel with the stereoscopic optical system, and furthermore, since the transmission part of the perforated mirror is shifted downward, it is possible to project a wide area particularly on the pocket side around the operation part. Therefore, the pocket side which the surgeon frequently uses and wants to observe can be observed in a wider range, so that the operation of the treatment tool can be made more efficient than in the first embodiment.

In addition, the workstation outputs various kinds of setting information of the bipolar probe and the ultrasonic scalpel probe together with the position information to the video mixer. It is displayed in the vicinity of each energy treatment tool, and setting information on the energy treatment tool can be more easily viewed.

In the first and second embodiments, the image of the first observation optical system is transmitted through the perforated mirror, and the image of the second observation optical system is reflected by the perforated mirror. However, the image of the first observation optical system may be reflected by the perforated mirror, and the image of the second observation optical system may be transmitted through the perforated mirror.

Although the image of the second observation optical system is a plane image (2D) displayed only on one of the pair of eyepieces, the image of the second observation optical system is referred to as a three-dimensional image (3D). Thus, the second observation optical system and the like may be set.

In the second observation optical system, the peripheral image of the operative site is converted into an electric signal by an image sensor and displayed on a monitor. However, without using the image sensor, an optical fiber or the like is used. A configuration may be used in which an image is relayed optically by using the image and displayed in the field of view of the eyepiece.

Further, the present invention includes the inventions listed below. (Supplementary Note) (Supplementary Note 1) A first observation optical system for enlarging and observing the operative site, and a second observation optical system for observing the periphery of the operative site in a wider area than the observation field of view of the first observation optical system. A surgical microscope, comprising: a finder optical system for simultaneously observing an image of an operation portion of the first observation optical system and an image of a periphery of the operation portion of the second observation optical system in a microscope visual field. (Supplementary note 2) The surgical microscope according to Supplementary note 1, wherein the image of the operation part is displayed at a central part of a visual field of the eyepiece optical system, and the image around the operation part is displayed at a peripheral part of the visual field. (Supplementary note 3) The surgical system according to Supplementary note 1 or 2, wherein a part of an optical system constituting the first observation optical system and a part of an optical system constituting the second observation optical system are common. microscope. (Supplementary note 4) The surgical microscope according to Supplementary note 1, 2, or 3, wherein a relative angle between the operative part image and the peripheral image of the operative part substantially coincides within a field of view of the finder optical system. (Supplementary Note 5) Detecting means for detecting the relative position between the observation optical system for enlarging and observing the operative site and the energy treatment tool, and setting information of the energy treatment tool in the field of the microscope according to the detection result of the detection means. A surgical microscope, comprising: a display unit for displaying the information on the surgical microscope. (Supplementary Note 6) A first observation optical system for enlarging and observing the operation part, a second observation optical system for observing the periphery of the operation part in a wider range than the observation field of view of the first observation optical system, and the first observation optical system A finder optical system for simultaneously observing an image of the surgical site of the observation optical system and a peripheral image of the surgical site of the second observation optical system within the field of view of the microscope;
Detecting means for detecting a relative position between the first observation optical system and the energy treatment tool; calculating means for calculating a display position of setting information of the energy treatment tool from a detection result of the detecting means; Display means for displaying setting information of the energy treatment tool at an appropriate position within the microscope field of view according to the result.

[0063]

According to the present invention, in a surgical microscope, a treatment tool used for surgery can be efficiently operated.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a surgical microscope.

FIG. 2 is a diagram showing a shape of a perforated mirror.

FIG. 3 is a diagram showing information from a workstation displayed on a monitor.

FIG. 4 is a diagram showing the inside of the field of view of an eyepiece observed by an operator.

FIG. 5 is a configuration diagram of a surgical microscope.

FIG. 6 is a diagram showing a shape of a perforated mirror.

FIG. 7 is a diagram showing the inside of the field of view of an eyepiece observed by an operator.

FIG. 8 is a diagram showing a state of a conventional microsurgery using an operating microscope.

[Explanation of symbols]

 Reference Signs List 6 pocket 7 stereoscopic optical system 17 second observation optical system 19 optical navigation device 20 video mixer 23 perforated mirror 27 bipolar probe 28 ultrasonic scalpel probe 40 stereoscopic optical system 41 second observation optical system 45 perforated mirror

Claims (1)

[Claims] A first observation optical system for enlarging and observing an operation part; a second observation optical system for observing a periphery of the operation part in a wider area than the observation field of view of the first observation optical system; A surgical microscope, comprising: a finder optical system for simultaneously observing an image of a surgical site of the first observation optical system and a peripheral image of the surgical site of the second observation optical system in a microscope visual field.