JPH11318936A - Microscopic device for operation - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a microscopic device for an operation improving access to a testee in an operation field so as to reduce an operator's burden. SOLUTION: A microscopic device for an operation has an optical system obtaining an optical image of an operation field R, and a video camera picking up the optical image obtained from the optical system and outputting an image signal. The microscopic device is vertically movable on the operation field R and is provided with a lens-barrel 1 with the working distance set to the specified distance or more, and a display device 4 disposed in a position where an operator can observe in the opposed state to the side face of the lens-barrel 1 and in a position inward from the lens-barrel 1 from the operator's side view, so as to display an image based on the image signal outputted from the video camera 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to, for example, a surgical microscope apparatus (also referred to as a "microscope").

[0002]

2. Description of the Related Art In an operation using a conventionally known surgical microscope apparatus as shown in FIG. 9, an operator (operator) positions his or her eyes on an eyepiece of the microscope apparatus. There is a need. For this reason, (1) when the microscope apparatus is moved, the operator himself has to move or change his posture accordingly.

Also, (2) when the operator takes his / her eyes off the eyepiece, such as when observing an image other than a microscope image (see FIG. 10), it is dangerous to leave the hand on the surgical field. Therefore, it is necessary to first move the hand away from the surgical field, and then turn the eyes in directions other than the eyepiece. To return to the operation while observing the microscope image, perform the reverse procedure. If the surgeon frequently removes his / her eyes from the eyepiece, the above procedure must be repeated.

[0004] In other words, the conventional surgical microscope apparatus provided with an optical eyepiece as shown in FIG. 11 imposes a specific operation on the operator as described in (1) and (2) above. In some cases, this burdened the surgeon.

Accordingly, a video microscope apparatus (FIG. 1) in which an optical image is captured by an image capturing means such as a video camera and the obtained image is displayed by a display means, instead of the operator directly looking into the eyepiece of the microscope apparatus. 12) was devised. Further, a video microscope apparatus capable of so-called stereoscopic viewing by displaying images for the left eye and the right eye, respectively, has been devised.

A video microscope apparatus (stereoscopic video microscope) capable of stereoscopic viewing includes a head-mounted display (HMD) as a display means, and a small LCD viewer (LCD; liquid crystal) suspended from a position in front of the face. Display device) is known.

FIG. 13 is a view showing the appearance of a conventional head mounted display device (HMD). In the figure, 131 indicates a right-eye display, 132 indicates a left-eye display, and 133 indicates headgear.

FIG. 14 is a view showing the appearance of a conventional small LCD viewer. In the figure, 141 is a hanger, 142 is a right-eye LCD, 143 is a left-eye LCD,
144 is an observation window for the right eye, and 145 is an observation window for the left eye.

[0009] However, the former device provided with the HMD requires the HMD every time a non-microscopic image is viewed.
Must be removed from the front of the eye by the operator, and the latter device also requires the operator to move his hand away from the operative field. That is, the problem of imposing an operation that imposes a burden on the operator as described in the above (2) has not been solved even in the stereoscopic video microscope.

Furthermore, (3) when using an HMD or a small LCD viewer, the adjustment of the eyes (adjustment of the focal length of the crystalline lens, which is simply called “adjustment” in technical terms) is a relatively short distance, It is often adapted to a so-called clear vision distance of typically 25-35 cm. For this reason, when you remove the HMD or remove your face from the small LCD viewer, the adjustment changes when you look at objects farther away, but it is difficult to adjust sharply, especially for elderly doctors, and it is difficult to focus for a few seconds. Often do not fit.

Further, as shown in FIG. 15, a device configuration in which a medium to large display device is arranged at a relatively long distance from an operation field and a microscope image is displayed on the display device has been considered. However, in this configuration, the surgeon twists his neck and performs an operation while looking at the display surface (the direction indicated by the arrow C), and the surgeon feels a great deal of fatigue.

[0012]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem, and provides a surgical microscope apparatus capable of improving access to a subject in an operation field and reducing a burden on an operator. The purpose is to:

[0013]

SUMMARY OF THE INVENTION In order to solve the above problems and achieve the object, a surgical microscope apparatus according to the present invention is configured as follows. (1) The surgical microscope apparatus of the present invention has an optical system for obtaining an optical image of an operation field, and an image pickup means for picking up an optical image obtained from the optical system and outputting a video signal. The lens barrel can be moved in the vertical direction, and the working distance in this case is set to a predetermined distance or more, and a position where an operator can observe in a state facing the side surface of the lens barrel, And display means for displaying an image based on the image signal output from the image pickup means, the display means being disposed at a position deeper than the lens barrel as viewed from the operator. (2) The surgical microscope apparatus of the present invention has an optical system for obtaining an optical image of an operation field, and an image pickup unit for picking up an optical image obtained from the optical system and outputting a video signal, and The lens barrel can be moved in the vertical direction, and the working distance in this case is determined to be a predetermined distance or more, a position where an operator can observe in a state facing the side surface of the lens barrel, And is disposed at a position closer to the operator than the lens barrel,
Display means for displaying an image based on the image signal output from the imaging means.

According to the surgical microscope apparatus of the present invention configured as described in (1) or (2) above, since the working distance of the lens barrel is set to a predetermined distance or more, the operating field and the mirror The working space between the cylinder and the tube can be expanded. Therefore,
In a state where the operator faces the lens barrel, the work is not hindered by the lens barrel being in the way, and the burden on the operator can be reduced. Specifically, the surgeon can instantly alternate between the act of observing the macroscopic visual field around the operative field and its surroundings, and the act of observing the video displayed on the display means. become.

[0015]

Embodiments of the present invention will be described below with reference to the drawings. (First Embodiment) FIG. 1 is a block diagram showing a schematic configuration of a surgical microscope apparatus according to a first embodiment of the present invention. 1 is a lens barrel that can move in the vertical direction on the surgical field (retraction) R of the subject 6. The lens barrel 1 has an optical system for obtaining an optical image of the operation field R therein. Also, in the lens barrel 1,
A video camera (imaging means) 2 for capturing an optical image obtained from the optical system and outputting a video signal thereof is attached.

Reference numeral 4 denotes a display device (display means) which is a position at which the operator 5 can observe the object while facing the side surface of the lens barrel 1, and which is located farther than the lens barrel 1 when viewed from the operator 5. Placed in the position. The display device 4 is controlled by the circuit system 3 and displays an image based on the image signal output from the video camera 2.

FIG. 2 is a diagram showing a main configuration of the surgical microscope apparatus according to the present embodiment. As shown in FIG. 1, the lens barrel 1 has an optical system including an objective lens system 10 and a zoom system 11. The optical image output from the zoom system 11 is input to the video camera 2 and captured by the CCD 12.

As described above, the surgical microscope apparatus according to the present embodiment constitutes a video microscope apparatus. However, unlike the optical microscope apparatus in the video microscope apparatus, the operator no longer needs to look through the eyepiece. Absent. The present invention focuses on this point, and uses a larger-diameter and longer-focus optical system than in the past, and sets the distance (working distance) from the lens barrel 1 to the operation field R of the subject 6 to about 50 to 60 cm or more. There is.

According to the surgical microscope apparatus of the present embodiment as described above, in a state where the surgeon 5 reaches the operation field R and performs a fine operation such as an operation while facing the side surface of the lens barrel 1. When taken, the lens barrel 1 does not hinder the work. Further, the visual field V of the operator 5 is not obstructed by the lens barrel 1.

Therefore, the surgeon can directly see the macro view of the surrounding situation and the surgical field (the subject of the microscope, the place where the operation is being performed) with the naked eye, or enlarge the microscope (5 to 50 times). It is possible to instantly change the viewing of the video on the display device without changing the posture and with little change in the adjustment of the eyes.

Here, various modifications of the surgical microscope apparatus according to the present embodiment will be described. FIG. 3 is a diagram illustrating a surgical microscope apparatus configured to illuminate an operation field. As shown in FIG.
0 is provided, and this light 20 illuminates the surgical field R. Thereby, a bright image can be obtained. Also,
The operator 5 can easily observe the operation field R with the naked eye.

In the configuration shown in FIG. 3, the illumination light from the light 20 is located at the end of the lens barrel 1 and between the illumination light 20 and the operator 5. There is provided a shielding member 21 for preventing the light from being directly incident on the light emitting device. Thereby, even when the operator 5 observes the operation field R with the naked eye, it is not dazzling.

FIG. 4 is a view showing a mounting structure of the display device 4. As shown in FIG. 4A, another hanger 42 is attached to the lens barrel 1 suspended from a ceiling or a stand (not shown) via a hanger 40, and the display device 4 is suspended by the hanger 42. You may.

Further, as shown in FIG. 4B, the lens barrel 1 may be suspended independently. Here, a handle 44 whose surface has been sterilized is attached to the display device 4.
By operating the handle 44, the operator may freely move the display device 4.

FIG. 5 is a diagram showing a modification in which the display means of the microscope image is constituted by a small display device. In the surgical microscope apparatus shown in the figure, the display device 4 shown in FIG. 1 is not provided, and instead, a small LCD viewer (liquid crystal display device) is provided.
50 are provided. The LCD viewer 50 is arranged at a position where the operator 5 can observe the opposing side of the lens barrel 1 in a state facing the side surface of the lens barrel 1 and at a position nearer to the operator 5 than the lens barrel 1. The LCD viewer 50 is controlled by the circuit system 3 similarly to the display device 4 shown in FIG. 1, and displays an image based on the image signal output from the video camera 2. Note that the LCD viewer 50 may be suspended independently of the lens barrel 1.

(Second Embodiment) The second embodiment relates to a combination of the present invention and a known "surgical three-dimensional viewer system". A surgical three-dimensional viewer system is disclosed in Japanese Patent Application No. 62-743, filed by the same applicant as the present invention.
No. 85 (Japanese Unexamined Patent Publication No. Sho 63-240851), the position and direction of a microscope device are measured by a position measurement device, and a surgical assistance image corresponding to the position and direction of the microscope device is created. Is superimposed on a video signal (microscope image) from the microscope device and displayed.

FIG. 6 is a block diagram showing a schematic configuration of the surgical three-dimensional viewer system of the present embodiment. Reference numerals 60 and 61 shown in FIG. 1 denote light emitting diodes (LEDs), which are provided at predetermined positions of the lens barrel 1 (here, side positions of the video camera 2). Numeral 62 denotes a position measuring device, which is means for measuring the position of the lens barrel 1 by detecting light emitted from the light emitting diodes 60 and 61. Reference numeral 63 denotes a computer device, and the position measuring device 6
The position data of the lens barrel 1 obtained as a result of the measurement 2 and the image data of the three-dimensional image stored in the storage device 34 are input, and predetermined image processing described later is performed, and the lens barrel of the microscope device is input. An operation support image in a direction in which the operation field R is viewed from 1 is created. Reference numeral 65 denotes a mixer, which converts a video signal output from the lens barrel 1 and an image signal of a surgical assistance image output from the computer device 63 (3D data as viewed from the lens barrel 1 of the microscope device). Mix and output. The display device 4 displays an image according to the output signal from the mixer 65. That is, the microscope image obtained via the video camera 2 and the surgery support image obtained from the computer device 63 are displayed in a superimposed (superimposed) manner.

The computer device 63 creates a surgery support image by, for example, image processing described below. The surgery support image expresses what an object looks like inside and on the surface of a subject (patient) when viewed from the position and direction of the microscope device measured by the position measurement device 62. Image, specifically, computer graphics (C
G). This computer graphics is created as follows.

For example, an X-ray computed tomography apparatus (C
T) or a modality such as a magnetic resonance diagnostic apparatus (MRI) performs imaging before or during an operation to obtain image data of a three-dimensional image in advance. The image data of the three-dimensional image is stored and held in the storage device 34.

The computer device 63 reads out the image data of the three-dimensional image from the storage device 34 and
The three-dimensional image is converted into a two-dimensional image by performing image processing including geometric transformation known as projection transformation based on the position data of the lens barrel 1 measured by the method.

The image for assisting surgery represented by such computer graphics helps to identify what is shown in the microscope image, or is included in a deeper part and the like, and is not included in the microscope image. This is useful for indicating the location of important structures that are not shown.

(Third Embodiment) The third embodiment relates to so-called stereoscopic vision. It is known that the optical system inside the lens barrel 1 is configured separately for the left eye and the right eye, and stereoscopic viewing becomes possible by providing specific display means corresponding to the left and right eyes. By applying, for example, the configuration described below to the surgical microscope apparatus of the first and second embodiments described above, stereoscopic vision can be realized.

FIG. 7 is a diagram showing an example of the optical system of a single-camera stereoscopic video microscope. As shown in the figure, the apparatus includes an objective system 71, a zoom system 72, a left and right lens 7,
3. It comprises a video camera 74 and a CCD 75.

In the left half of the CCD 75, that is, 75L,
The microscope image for the left eye is projected via the lens 73L for the left eye, and the microscope image for the right eye is projected via the lens 73R for the right eye on the right half of the CCD 75, that is, 75R.

According to this configuration, the right and left images required for stereoscopic viewing can be photographed by one camera. It is needless to say that a configuration in which the left and right images are photographed by different video cameras may be applied.

Next, the configuration of a stereoscopic display device used for performing stereoscopic vision will be described. As a stereoscopic display device, a device using a polarizing filter, a device using a lenticular lens or a collimator, and the like are known.

FIG. 8 is a diagram showing an example of a stereoscopic display device. This device is a backlight EL
(Electroluminescence) A striped mask 81 is arranged on the surface of a panel 80, and an LCD (liquid crystal display device) 82 is arranged at a predetermined distance from the mask 81.

The mechanism of stereoscopic vision by this device will be described focusing on observation from the right eye of the observer.
The portion 83R of the D82 that displays the image for the right eye receives illumination from the backlight 80 via the transparent portion of the mask 81. The portion 83L other than the right-eye image is not illuminated due to the presence of the opaque portion of the mask 81. At this time, for the left eye, the part 8 displaying the image for the right eye
3R is not illuminated by the backlight 80 due to the presence of the opaque portion of the mask 81. Further, a portion 83 </ b> L other than the image for the right eye (that is, a portion displaying the image for the left eye) is illuminated through the transparent portion of the mask 81.

Such an autostereoscopic display device is more suitable for combination with the present invention than a polarizing filter type stereoscopic display device which requires the wearing of polarized glasses. It should be noted that stereoscopic viewing in a method of wearing polarized glasses has a drawback that the field of view is dark, but does not necessarily make it impossible to see the hand and surroundings with the naked eye instantly.

[0040]

According to the surgical microscope apparatus of the present invention described above, the access to the subject in the surgical field is improved, so that the burden on the operator is reduced, and the working space is enlarged, whereby It is possible to realize various procedures and the like.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a schematic configuration of a surgical microscope apparatus according to a first embodiment of the present invention.

FIG. 2 is a diagram showing a main part configuration of the surgical microscope apparatus according to the embodiment.

FIG. 3 is a view showing a surgical microscope apparatus according to the embodiment, which is configured to illuminate an operation field.

FIG. 4 is a diagram showing a mounting structure of the display device according to the embodiment.

FIG. 5 is a diagram showing a modified example in a case where the display means of the microscope image according to the embodiment is configured by a small display device.

FIG. 6 is a block diagram showing a schematic configuration of a surgical three-dimensional viewer system according to a second embodiment of the present invention.

FIG. 7 is a diagram showing an example of an optical system of a single-camera stereoscopic video microscope according to a third embodiment of the present invention.

FIG. 8 is a diagram showing an example of a stereoscopic display device according to a third embodiment of the present invention.

FIG. 9 is a view showing a state of an operation using a surgical microscope apparatus according to a conventional example of the present invention.

FIG. 10 is a view showing a state in which the operator takes his / her eyes off the eyepiece according to the conventional example of the present invention.

FIG. 11 is a view showing a surgical microscope apparatus provided with an optical eyepiece according to a conventional example of the present invention.

FIG. 12 is a view showing a video microscope apparatus according to a conventional example of the present invention.

FIG. 13 is a view showing the appearance of a head-mounted display device (HMD) according to a conventional example of the invention.

FIG. 14 is a view showing the appearance of a small LCD viewer according to a conventional example of the present invention.

FIG. 15 is a diagram showing a device configuration for displaying a microscope image on a medium to large display device according to a conventional example of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Barrel 2 ... Video camera (imaging means) 3 ... Circuit system 4 ... Display device 5 ... Surgeon 6 ... Subject 20 ... Illumination light 21 ... Shielding member

Claims (10)

[Claims] 1. An optical system for obtaining an optical image of an operation field, and an image pickup means for picking up an optical image obtained from the optical system and outputting a video signal, the optical system being capable of moving vertically on the operation field. And a lens barrel whose working distance is set to be equal to or longer than a predetermined distance, and a position where an operator can observe the lens in a state facing the side surface of the lens barrel, and when viewed from the operator. And a display unit disposed at a position deeper than the lens barrel and displaying an image based on a video signal output from the imaging unit. 2. An optical system for obtaining an optical image of an operation field, and an image pickup means for picking up an optical image obtained from the optical system and outputting a video signal, and being movable vertically on the operation field. And a lens barrel whose working distance is set to be equal to or longer than a predetermined distance, and a position where an operator can observe the lens in a state facing the side surface of the lens barrel, and when viewed from the operator. A display unit disposed at a position before the lens barrel and displaying an image based on the image signal output from the imaging unit. 3. The surgical microscope apparatus according to claim 1, wherein the display unit is suspended from the lens barrel. 4. The surgical microscope apparatus according to claim 1, wherein the lens barrel and the display unit are suspended independently of each other. 5. The surgical microscope apparatus according to claim 1, further comprising a sterilized handle connected to the display means. 6. An illuminating means provided on the lens barrel for illuminating the operation field, and a shielding means for preventing illumination light emitted from the illuminating means from directly entering the operator's field of view. The surgical microscope apparatus according to any one of claims 1 to 5, further comprising: 7. The apparatus according to claim 1, further comprising: a position measurement target member attached to a predetermined position in the operative field; and a measuring unit configured to measure a position of the position measurement target member. Surgical microscope equipment. 8. A creating means for creating a surgical assistance image based on the measurement result of the measuring means, a superimposing display means for superimposing and displaying the surgical assistance image created by the creating means on the video, The surgical microscope apparatus according to claim 7, further comprising: 9. An optical system for obtaining an optical image of an operation field, and an image pickup means for picking up an optical image obtained from the optical system and outputting a video signal, and being movable vertically on the operation field. A surgical microscope apparatus comprising: a lens barrel; and a display unit that displays an image based on a video signal output from the imaging unit. When the surgeon performs an operation, the lens tube inhibits the operation. An operating microscope apparatus wherein the working distance of the lens barrel is set to a predetermined distance or more so as not to cause a problem. 10. The surgical microscope apparatus according to claim 9, wherein the working distance is set to 50 cm or more.