JP2018194698A - Surgery microscope - Google Patents

Abstract

To enable a compact configuration to switch an observation by monitoring and an observation by an eyepiece lens.SOLUTION: A surgery microscope comprises: a microscope main body part 31 that houses an objective lens 36 and each magnification varying lenses 38a and 38b; a monitor 35 that three-dimensionally (3D) displays a video taken by each of image pick-up elements 42a and 42b; a beam splitter 40 that is arranged between each of the magnification varying lenses 38a and 38b and each of the image pick-up elements 42a and 42b; a three-dimensional (3D) imaging part 32 that houses each of the image pick-up elements 42a and 42b; and an eyepiece lens unit 34 that has two eyepiece lenses 44a and 44b upon which each light flux on either right/left side divided by the beam splitter 40 is incident. The eyepiece lens unit 37 is capable of being mounted/detached to/from the 3D imaging part 32, and the beam splitter 40 is movable between a position on a line of the light flux heading for each of the image pick-up elements 42a and 42b from each of the magnification varying lenses 38a and 38b and a position apart from on the line of the light flux.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a surgical microscope used by doctors during surgery.

As a surgical microscope used by a doctor at the time of surgery, there is a patent document 1: Japanese Patent Application Laid-Open No. 2014-145969.
The surgical microscope of Patent Document 1 splits a light beam that has passed through an objective lens and a variable power lens into a main optical path and a sub optical path by a beam splitter, introduces the main optical path into an eyepiece lens on an observer side such as a doctor, and the sub optical path It has been introduced into the imaging device.
Imaging data captured by the imaging device is output to a monitor (display device) via a controller.

JP 2014-145969 A

In a conventional surgical microscope, an observer can see an affected part through an eyepiece, or can see an affected part on a monitor display.
However, since an eyepiece unit including an eyepiece lens tends to be enlarged, it may become an obstacle during surgery, and in practice, surgery is often performed while only looking at a monitor.

  However, when an operation is performed using only a monitor without using an eyepiece unit, there is a problem that the operation cannot be continued if the imaging apparatus breaks down.

  Accordingly, the present invention has been made to solve the above problems, and an object of the present invention is to provide a surgical microscope capable of switching between observation with a monitor and observation with an eyepiece lens with a compact configuration.

According to the surgical microscope according to the present invention, the objective lens, at least two magnification changing lenses respectively arranged with respect to the right and left light beams incident on the objective lens, the objective lens and the magnification changing lenses are accommodated. A main body of the microscope, two image sensors for receiving the light beams emitted from the respective magnification changing lenses, and each image sensor connected to the image sensor via a video cable to display a 3D image captured by the image sensor. A monitor, one or two beam splitters arranged between each magnification changing lens and each image sensor, a 3D image pickup unit that accommodates each image sensor, and both left and right sides divided by the beam splitter An eyepiece unit having two eyepieces on which each light beam is incident, and the eyepiece unit can be attached to and detached from the 3D imaging unit. The beam splitter is provided so as to be movable between a position on the line of light flux from each magnification changing lens toward each image sensor and a position separated from the line of the light flux. It is a feature.
By adopting this configuration, when the affected area is displayed only on the monitor, the eyepiece unit can be removed from the 3D imaging unit, and the surgery can be performed. Can be attached to the 3D imaging unit. In addition, the eyepiece unit can be easily replaced.
When the eyepiece unit is detached from the 3D image pickup unit and used, the beam splitter is moved to a position separated from the line of the light beam directed from the magnification changing lens to the image sensor, so that the light beam is efficiently incident on the image sensor. be able to.
In addition, the beam splitter as used in this invention points out the whole optical element which divides | segments light, and is a concept also including a half mirror.

  Each of the imaging elements is provided at a position facing the objective lens in the 3D imaging unit, and the eyepiece unit is attached to and detached from a wall surface in a direction orthogonal to the light flux direction from the objective lens in the 3D imaging unit. It may be characterized by being provided.

The beam splitter is provided in the eyepiece unit, and when the eyepiece unit is attached to the 3D imaging unit, the beam splitter is provided between each magnification changing lens and each image sensor. And when the eyepiece unit is removed from the 3D imaging unit, the eyepiece lens unit and the eyepiece lens unit may be separated from the line of light flux from each magnification changing lens toward each image sensor. .
According to this configuration, when the eyepiece unit is removed from the 3D imaging unit, the beam splitter is also taken out from the 3D imaging unit and separated from the light beam line, so when the eyepiece unit is removed from the 3D imaging unit. There is no need to manually move the beam splitter.

  According to the present invention, it is possible to switch between confirming an image of an affected area only with a monitor or confirming with an eyepiece with a compact configuration.

It is a front view of a surgical microscope. It is a side view of a surgical microscope. It is a front view of a surgical microscope in the state where an eyepiece unit was removed. It is a side view of a surgical microscope in the state where an eyepiece unit was removed. It is a perspective view which shows the internal structure of the operation microscope of the state which removed the eyepiece unit. It is a perspective view which shows the place where a beam splitter does not exist on a light beam line in the state which attached the eyepiece unit, and shows the internal structure of a surgical microscope. It is a perspective view which shows the internal structure of a surgical microscope which shows the place where the beam splitter is arrange | positioned on the light beam line in the state which attached the eyepiece unit. It is a front view of the operation microscope which provided the prism between the beam splitter and the image pick-up element. It is a side view which shows embodiment which provided the beam splitter in the eyepiece unit. FIG. 10 is a side view of a state in which the eyepiece unit of FIG. 9 is attached.

1 and 2 show the overall configuration of the surgical microscope 30 according to the present embodiment. FIGS. 3 and 4 show a state where the eyepiece unit is removed. In FIGS. 1 and 4, the monitor is omitted.
The surgical microscope 30 of the present embodiment is a 3D microscope for ophthalmic surgery, and includes a microscope main body 31, a 3D imaging unit 32, an eyepiece unit 34, and a monitor 35.

The microscope main body 31 is provided with an objective lens 36 and magnification changing lenses 38a and 38b each composed of a plurality of lenses.
The magnification changing lenses 38a and 38b are arranged on the left and right sides of the light beam incident on the objective lens 36, and two light beams are generated through the magnification changing lenses 38a and 38b.

The two light beams emitted from the magnification changing lenses 38 a and 38 b are incident on the 3D imaging unit 32. The 3D imaging unit 32 is provided with a beam splitter 40 and two imaging elements 42a and 42b.
In the present embodiment, an example is shown in which only one beam splitter 40 is sized to cover both of the two light beams. However, as a beam splitter, you may provide two beam splitters of the magnitude | size arrange | positioned at each of two light beams.
A beam splitter refers to the entire optical element that divides light, and is a concept that includes a half mirror and the like.

The two image pickup devices 42a and 42b are provided at positions in the 3D image pickup unit 32 that are opposed to the objective lens 36 and are on a line of light beams that pass through the objective lens 36 and the magnification changing lenses 38a and 38b. ing.
Therefore, since the light incident on the objective lens 36 is linearly incident on the imaging elements 42a and 42b, an optical system for bending the optical path is not required, and the microscope main body 31 and the 3D imaging unit 32 are cylindrical bodies having the same diameter. It is. For this reason, the microscope main body 31 and the 3D imaging unit 32 do not have a portion protruding outward except the eyepiece unit 34, and can have a compact configuration. For this reason, the surgical microscope 30 does not get in the way during the operation.

  The eyepiece unit 34 has binocular eyepiece lenses 44a and 44b, and is provided so that the light beam split from the beam splitter 40 enters the eyepiece lenses 44a and 44b.

The eyepiece unit 34 can be attached to and detached from the 3D imaging unit 32.
A circular opening 46 is formed on the side surface of the 3D imaging unit 32 at a position where the two light beams divided by the beam splitter 40 are incident. A circular mounting portion 47 of the eyepiece unit 34 is attached to the opening 46. Then, two light beams split by the beam splitter 40 enter the eyepiece unit 34 from the opening 46.

When the eyepiece unit 34 is not attached to the 3D imaging unit 32, it is preferable to attach a cap (not shown) or the like to the opening 46 of the 3D imaging unit 32.
Note that the eyepiece unit 34 can be replaced with another eyepiece unit 34 after being removed from the 3D imaging unit 32. In this case, it is necessary to make the shape of the attachment portion 47 common to the plurality of eyepiece units 34.

FIG. 5 shows a perspective view of the internal configuration of the surgical microscope without the eyepiece unit attached, and FIGS. 6 and 7 show perspective views of the internal configuration of the surgical microscope with the eyepiece unit attached.
The beam splitter 40 is provided so as to be movable between a position on the line of the light beam from each magnification changing lens 38a, 38b toward each of the image sensors 42a, 42b and a position separated from the line of the light beam.

  As shown in FIG. 5, when the eyepiece unit 34 is detached from the 3D imaging unit 32, the beam splitter 40 is moved away from the line of the light beam directed from the magnification changing lenses 38 a and 38 b to the imaging elements 42 a and 42 b. All the two light beams can be incident on the image sensors 42a and 42b.

  As shown in FIGS. 6 to 7, when the eyepiece unit 34 is attached to the 3D image pickup unit 32, the beam splitter 40 is moved on the line of light flux from the magnification changing lenses 38a and 38b toward the image pickup devices 42a and 42b. By arranging the two light beams, the two light beams can be split and emitted to the eyepiece unit 34 in addition to the incidence of the light beams on the imaging elements 42a and 42b.

  As described above, when the eyepiece unit 34 is detached from the 3D imaging unit 32, the beam splitter 40 can be arranged at a position deviated from the line of the light beam directed from the magnification changing lenses 38a and 38b to the imaging elements 42a and 42b. Thus, each light beam can be efficiently incident on the image sensors 42a and 42b.

It is conceivable that the beam splitter 40 is moved manually.
For example, a lever (not shown) may be provided on the beam splitter 40, and the beam splitter 40 may be moved by operating the lever manually.

  The monitor 35 and the image sensors 42a and 42b are connected by a video cable 48. Video data captured by the image sensors 42a and 42b is transmitted to the monitor 35 in real time, and images from the image sensors 42a and 42b are displayed on the monitor 35.

Further, as shown in FIG. 8, prisms 50a and 50b for widening the interval between two light beams may be provided between the beam splitter 40 and the image sensors 42a and 42b.
According to such a configuration, the two light beams can be received in the case where the areas of the imaging elements 42a and 42b cannot be arranged in close proximity to the interval between the two light beams from the objective lens 36. .

Next, an embodiment in which the beam splitter 40 is provided in the eyepiece unit 34 will be described with reference to FIGS.
In addition, the same components as those in the above-described embodiment are denoted by the same reference numerals, and the description may be omitted.

In this embodiment, the microscope main body 31 is provided with an objective lens 36 and magnification changing lenses 38a and 38b each composed of a plurality of lenses, and this point has the same structure as the above-described embodiment. is there.
In the 3D imaging unit 32, two imaging elements 42a and 42b are provided.

A circular opening 46 is formed on the side surface of the 3D imaging unit 32. A circular mounting portion 47 of the eyepiece unit 34 is attached to the opening 46.
The eyepiece unit 34 is provided with a beam splitter 40 that enters the inside of the 3D imaging unit 34 when the mounting unit 47 is attached to the opening 46 of the 3D imaging unit 34. The beam splitter 40 is housed in a housing portion 53 that protrudes from the mounting portion 47 in the direction of the 3D imaging portion 34.

  The storage unit 53 holds at least the beam splitter 40 and can enter the beam splitter 40 without being blocked by the light fluxes from the magnification changing lenses 38 a and 38 b toward the imaging elements 42 a and 42 b, and is divided by the beam splitter 40. The configuration is such that the light beam traveling toward the eyepiece unit 34 is not blocked.

According to such an embodiment, by removing the eyepiece lens unit 34 from the 3D imaging unit 32, the beam splitter 40 is also separated from the line of the light beam directed from the magnification changing lenses 38a and 38b to the imaging elements 42a and 42b. be able to. Then, by attaching the eyepiece unit 34 to the 3D imaging unit 32, the beam splitter 40 can be arranged on a line of light fluxes directed from the magnification changing lenses 38a and 38b to the imaging elements 42a and 42b.
For this reason, it is not necessary to move the beam splitter 40 by hand with the attachment / detachment of the eyepiece unit 34, and the operator's trouble can be saved.

  The monitor 35 of this embodiment is a 3D monitor. There are various methods for 3D display on a 3D monitor, but a known polarization type or shutter type that requires 3D glasses may be used, or a known spatial division display that does not require 3D glasses. Any method such as an equation or a time-division display method may be used.

30 Surgical microscope 31 Microscope main body 32 3D imaging unit 34 Eyepiece unit 35 Monitor 36 Objective lens 38a, 38b Magnification changing lens 40 Beam splitter 42a, 42b Imaging element 44a, 44b Eyepiece 46 Opening 47 Attachment unit 48 Video cable 50a, 50b Prism 53 storage

Claims (3)

An objective lens;
At least two magnification changing lenses respectively arranged with respect to left and right light beams incident on the objective lens;
A microscope main body housing the objective lens and each magnification changing lens;
Two image sensors for receiving each of the light beams emitted from the respective magnification changing lenses;
A monitor that is connected to each image sensor via a video cable and displays a 3D image captured by the image sensor;
One or two beam splitters disposed between each of the magnification changing lenses and each of the imaging elements;
A 3D imaging unit that accommodates each of the imaging elements;
An eyepiece unit having two eyepieces on which the light beams on both the left and right sides divided by the beam splitter are incident, and
The eyepiece unit is detachably attached to the 3D imaging unit,
The surgical microscope characterized in that the beam splitter is provided so as to be movable between a position on a line of light flux from each magnification changing lens toward each image sensor and a position separated from the line of the light flux. . Each of the imaging elements is provided at a position facing the objective lens in the 3D imaging unit,
2. The surgical microscope according to claim 1, wherein the eyepiece unit is detachably provided on a wall surface in a direction orthogonal to a direction of light flux from the objective lens in the 3D imaging unit. The beam splitter is provided in the eyepiece unit,
When the eyepiece unit is attached to the 3D imaging unit, the beam splitter is disposed between each magnification changing lens and each imaging element,
2. When the eyepiece unit is detached from the 3D image pickup unit, the eyepiece lens unit is separated from the line of light flux from the magnification changing lens toward the image pickup device together with the eyepiece lens unit. Item 3. The surgical microscope according to Item 2.