JP6043639B2 - Surgical microscope system - Google Patents

Description

  The present invention relates to a surgical microscope system.

  A camera as an imaging device is incorporated into a surgical microscope supported by a stand device so as to be movable up and down, and a pair of electronic images having a predetermined binocular parallax that can be stereoscopically viewed is captured by the camera, and each of the electronic images is electronically There is known a surgical microscope system in which a stereoscopic image can be observed by displaying on a pair of left and right display panels of an image display device and viewing it from the left and right eyepieces (see, for example, Patent Document 1).

JP 2004-320722 A

  However, in such a related technique, when performing fluorescence observation on a surgical microscope, it is necessary to provide a filter inside the surgical microscope, which makes it difficult to design the surgical microscope. In addition, the operation microscope has been enlarged.

  The present invention has been made paying attention to such a related technique, and provides a surgical microscope system capable of performing fluorescence observation using an electronic image display device without providing a filter on the surgical microscope side.

  According to the first aspect of the present invention, two main light paths that guide a pair of left and right light beams that have passed through the objective optical system and the variable power optical system to the left and right eyepieces, and both or one of the main light paths are branched as sub light paths. A surgical microscope that can be moved up and down, a camera that is assembled to the surgical microscope, introduces a sub optical path, and captures an electronic image with a pair of left and right imaging devices, and a pair of left and right display panels A surgical microscope system comprising an electronic image display device capable of displaying an electronic image captured by a camera and capable of observing the displayed electronic image with a pair of eyes from a pair of eyepieces. The element is provided with a filter that allows only light in a specific wavelength region to pass through the element.

  The invention described in claim 2 is characterized in that the filter is provided on the rotating body.

  According to the first aspect of the present invention, since the filter that transmits only the light beam in the specific wavelength region is provided in the image pickup device of the camera so as to be freely inserted and removed, it is not necessary to provide the filter on the surgical microscope side. Since the filter can be inserted and removed freely, normal observation can also be performed.

  According to the second aspect of the present invention, since the filter is provided on the rotating plate, the loading / unloading mechanism is simple.

1 is a perspective view showing a surgical microscope system according to a first embodiment of the present invention. Sectional drawing which shows the internal structure of a surgical microscope. The perspective view which shows the internal structure of a surgical microscope. Explanatory drawing which shows the optical system of a surgical microscope. The figure which shows the relationship between a camera, a display panel, etc. FIG. Sectional drawing which shows the internal structure of a camera. The figure which shows a filter. The side view which shows the internal structure of an electronic video display apparatus. The top view which shows the internal structure of an electronic video display apparatus. The perspective view which shows the surgical microscope which concerns on 2nd Embodiment of this invention. The perspective view which shows the internal structure of a surgical microscope. Sectional drawing which shows the internal structure of a camera.

(First embodiment)
FIGS. 1-9 is a figure which shows 1st Embodiment of this invention.

  A suspension arm 3 bent in a substantially U-shape is attached to the distal end 2 of a support arm 1 that extends in the lateral direction of a stand device (not shown) installed in the operating room, and is attached to the lower end of the suspension arm 3. The surgical microscope 4 for the doctor D1 is supported.

  Further, on the right side of the operation microscope 4, an electronic video display device 5 for the assistant D <b> 2 located on the right side with respect to the doctor D <b> 1 is similarly supported by a holding arm 6 extending from the distal end 2.

  The surgical microscope 4 has a structure that allows stereoscopic observation, and therefore, two main optical paths A on the left and right sides are formed inside. A light beam inlet 7 is formed in the lower part of the surgical microscope 4, and a lens group as the objective optical system 8 is provided in the vertical direction above the light beam inlet 7. A prism 9 is installed above the objective optical system 8, and a lens group as a variable magnification optical system 10 that is horizontal from the prism 9 to the rear is provided.

  A beam splitter 11 and a prism 12 are provided above and below the zoom optical system 10 so that the main optical path A is directed upward and then folded forward. The main optical path A turned upward passes through the imaging optical system 13 and then once forms a primary image F1 and then guided to the eyepiece 14. The eyepiece unit 14 is provided with an eyepiece optical system 15 from which the doctor D1 can optically observe the primary image F1 stereoscopically.

  That is, as shown in FIG. 4, the light beam L guided from the surgical site T to the objective optical system 8 at a predetermined convergence angle θ passes through the objective optical system 8 and then corresponds to the left and right pupils of the doctor D1. Divided into two systems, respectively, through the prism 9 as described above, and finally led to a pair of left and right eyepieces 14. Binocular parallax occurs in the primary image F1 that can be observed from the eyepiece unit 14 by the convergence angle θ, and stereoscopic observation is possible.

  A part of the light beam is branched from the beam splitter 11 in the main optical path A as a sub optical path B. The sub optical path B is folded back to the front side via the prism 16 and the lens 17 and the like, and further introduced into the camera 20 attached to the upper part of the surgical microscope 4 via the relay lens 18 and the prism 19 having a parallelogram section (FIG. 5). Is done.

  Inside the camera 20, a pair of left and right CCD image sensors 21 (hereinafter referred to as CCDs) as two-dimensional imaging elements are provided. A pair of electronic images having binocular parallax is captured by the CCD 21. Focus adjusting lenses 41 and 42 are provided in front of the camera 20, and one of the lenses 42 is movable by a servo mechanism 43. The lenses 41 and 42 and the servo mechanism 43 constitute a “focus mechanism”.

  Further, a rotating plate 44 having four holes is further provided in front of the lenses 41 and 42, and an observation transmission glass (with an infrared cut function) 45 and a fluorescence observation filter 46 are provided in pairs. . The filter 46 is a band-pass filter that selectively transmits a necessary wavelength according to the fluorescent material. By rotating the rotating plate 44 with a motor 47, the transmission glass 45 and the filter 46 can be selected. An electronic image captured by the CCD 21 of the camera 20 is output to the electronic image display device 5 via the controller 22.

  The electronic video display device 5 includes a pair of left and right display panels 24 inside the case 23. The display panel 24 is an organic EL, and is assembled to each substrate 25. A signal from the controller 22 is input to the substrate 25. A partition wall 26 that partitions the space left and right is provided inside the case 23. A pair of left and right eyepieces 27 is provided on the opposite side of the case 23 to the display panel 24. An eyepiece optical system 28 is provided inside the eyepiece 27.

  This case 23 is provided with not only the eyepiece 27 but also an objective optical system 29 and an imaging optical system 30. A relay optical system R is also provided between the objective optical system 29 and the imaging optical system 30. The objective optical system 29 receives the light beam from the display panel 24, and the imaging optical system 30 forms an image of the light beam transmitted through the objective optical system 29 to form a primary image F2. This primary image F2 is magnified by the eyepiece optical system 28 and introduced into the pupil of the assistant D2. The pupil observes the primary image F2 at the eye point where the light beams from the eyepiece optical system 28 intersect. Since the pair of left and right display panels 24 display electronic images having binocular parallax, they can be stereoscopically observed from the eyepiece unit 27.

  An operation switch 48 for the servo mechanism 43 of the camera 20 is provided on the side surface of the case 23 of the electronic video display device 5. By operating the operation switch 48, the lens 42 is moved, and focusing on the CCD 21 can be performed.

  According to this embodiment, since the electronic video display device 5 observed by the assistant D2 is supported separately from the surgical microscope 4, even if the doctor D1 changes the orientation of the surgical microscope 4, the electronic video display device 5 It does not move itself. Therefore, the doctor D1 and the assistant D2 can freely change the directions of the surgical microscope 4 and the electronic video display device 5, respectively, and the operability of both is improved.

  An objective optical system 29 and an imaging optical system 30 are provided inside the case 23 of the electronic video display device 5, and the primary image F2 formed by them is observed through the eyepiece optical system 28. Even when observing with the display device 5, it is possible to perform observation without a sense of incongruity with the same feeling as when observing with the normal surgical microscope 4. Therefore, the observation performance of the electronic image display device 5 is improved, and even when observed for a long time, it does not get tired.

  In addition, since the objective optical system 29 and the imaging optical system 30 are provided inside the case 23, the optical performance is improved, and a finer electronic image is obtained in accordance with the performance improvement such as resolution and response speed on the display panel 24 side. Can be observed. In other words, the display panel 24 is an organic EL system, which is superior in response performance and contrast performance as compared with a liquid crystal system, but is superior when observed from the eyepiece unit 27 through the objective optical system 29 and the imaging optical system 30. Performance can be brought out as it is.

  Further, a filter 46 that allows only a light beam in a specific wavelength region to pass through is provided in the vicinity of the CCD 21 of the camera 20 so that it can be freely inserted and removed. By rotating the rotating plate 44, normal observation with the transmission glass 45 can also be performed.

  In addition, since the camera 20 is provided with a focus mechanism, the doctor D1 adjusts the focus by moving the surgical microscope 4 up and down, not by adjusting the optical system inside the surgical microscope 4 according to the characteristics of its own pupil. Even if it does not coincide with the focal point of the camera 20, the electronic image display device 5 displays a clear electronic image because the camera 20 side can independently focus on the internal CCD 21. be able to.

  In addition, since the focusing operation of the camera 20 can be performed with the operation switch 48 on the side surface of the electronic video display device 5, the assistant D2 can perform accurate focusing while viewing the display.

  In addition, a rotating plate 44 is provided in the vicinity of the CCD 21. By rotating the rotating plate 44, imaging by the CCD 21 can be performed through a filter 46 that transmits only a light beam in a specific wavelength region, so that fluorescence observation is also possible. Therefore, the filter 46 can be switched and observed on the optical path B independent of the optical path A of the surgical microscope.

(Second Embodiment)
10-12 is a figure which shows 2nd Embodiment of this invention. This embodiment includes the same components as those in the first embodiment. Therefore, the same components are denoted by the same reference numerals, and redundant description is omitted.

  In the surgical microscope 40 according to this embodiment, the main optical path A is totally reflected upward by the prism 31 and is folded back to the eyepiece 14, and the sub optical path as in the first embodiment is not formed.

  Instead, a beam splitter 32 is provided in front of the imaging optical system 13 in the main optical path A, and a sub optical path C is formed by branching a part of the main optical path A to the right and left sides at right angles. The sub optical path C can be taken out from the light beam extraction portions 33 provided on the left and right sides of the surgical microscope 4. In this embodiment, only the light beam extraction part 33 on the right side is used, and the opposite side is closed. A camera 34 is attached to the right light beam extraction portion 33.

  Inside the camera 34, a slit plate 35, a pair of right and left prisms 36 and a relay lens 37 having a parallelogram shape in cross section are provided, and these constitute light splitting means.

  A pair of left and right holes 38 is formed in the slit plate 35, and one sub optical path C branched from the beam splitter 32 in the surgical microscope 4 is further divided into two parallel light beams L.

  In front of the CCD 39, as in the previous embodiment, a rotating plate 44 having a filter 46 and the like, lenses 41 and 42, and a servo mechanism 43 for moving the lens 42 are provided. Parallel light beams L that have passed through the lenses 41 and 42 and the rotating plate 44 are respectively introduced into the CCD 39. The electronic video imaged by the CCD 39 is output to the electronic video display device 5 via the controller as in the previous embodiment.

  Since a part of one of the main optical paths A is branched as a sub optical path C, and the sub optical path C is further branched into two parallel light beams L, a slight parallax d is generated between the parallel light beams L. Due to the parallax d, the electronic image display device 5 can obtain an electronic image with a pseudo three-dimensional feeling instead of simple 2D.

  In each of the above embodiments, the electronic image display device 5 is supported on the right side of the surgical microscope 4. However, the electronic image display device 5 may be supported at any position with respect to the surgical microscope 4. On the left side, the position opposite to the doctor D1 may be used.

  Further, the electronic video display device 5 is not only used for the assistant D2, but may be installed in a place different from the operating room so that nurses, residents, etc. can view it for learning.

  Further, the display panel 24 of the electronic video display device 5 is not limited to an organic EL panel, and may be a transmissive or reflective liquid crystal panel, or any other method.

4 Surgical microscope 5 Surgical microscope system 21, 39 CCD image sensor (two-dimensional image sensor)
23 case 24 display panel 27a, 27b, 27c eyepiece 28 eyepiece optical system 29 objective optical system 30 imaging optical system 23 case 41 lens (focus mechanism)
42 Lens (focus mechanism)
43 Servo mechanism (focus mechanism)
44 Rotating plate 45 Transmission glass 46 Filter 47 Motor 48 Operation switch A Main optical path B Sub optical path C Sub optical path D1 Doctor D2 Assistant F1, F2 Primary image

Claims (2)

Two main optical paths that guide a pair of left and right light beams that have passed through the objective optical system and the variable magnification optical system to the left and right eyepieces, and both or one of the main optical paths can be branched as sub optical paths, and are supported up and down. A surgical microscope,
A camera which is assembled to the surgical microscope and introduces a sub optical path to capture an electronic image with a pair of left and right image sensors;
A surgical microscope provided with an electronic image display device capable of displaying electronic images captured by a camera on a pair of left and right built-in display panels and observing the displayed electronic images with both eyes from a pair of eyepieces A system,
A surgical microscope system, wherein a filter that transmits only a light beam having a specific wavelength region is provided in the vicinity of an image sensor inside the camera. The surgical microscope system according to claim 1, wherein the filter is provided on the rotating body.

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