JP2585520Y2 - Observation device with displaceable eyepiece optical system - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an observation apparatus in which an eyepiece optical system can be displaced.

[0002]

2. Description of the Related Art Many of today's surgical microscopes can be provided with a device for joint observation by an assistant (hereinafter referred to as a sideoscope). In this case, because of the need to ensure image quality and identity for the surgeon and assistant, the sideoscope is usually connected directly to the surgical microscope via a beam splitter. However, in this method, when the operator moves or tilts the operating microscope to change the observation direction or the observation site, the eyepiece of the side endoscope must be corrected to a position where the assistant can easily observe the eyepiece alone. . Because if the angle of the surgical microscope is changed to change the observation direction, the eyepiece of the sideoscope also moves along with it, so if the position of the eyepiece is not corrected, the observer of the sideoscope will This is because not only must the posture be changed, but also a situation where even a very difficult posture has to be taken.

[0003] This will be described with reference to FIGS. 5 and 6. FIG. 5 is a view when the operation section 1 is observed from the vertical direction. The operator 2 sets the mirror body 3 vertically and is fixed to the mirror body 3 and arranged in pairs in a direction perpendicular to the paper surface. The eyepiece 4 to be observed is observed. At this time, the side endoscope 5 is used to hold the eyepiece 8 so that the left and right eyes 6, 7 of the assistant are horizontal.
The operator and the assistant observe the operation part 1 from a right angle direction, respectively. Next, when observing the operation part 1 from a direction inclined by α ° with respect to the vertical direction, as shown in FIG.
Although it is necessary to incline the mirror body 3 by α ° from the position shown in FIG. 5, if the mirror body 3 is set in this state, the eyepiece 8 held by the side endoscope 5 also inclines by α °. Left and right eyes 6,
7 will also have to lean. Therefore, the assistant needs to tilt his / her neck, resulting in fatigue.However, the fatigue of the operator when using the surgical microscope causes a lack of concentration on the operation and also increases the operation time. , Very dangerous.

The above-mentioned eyepiece position correcting means includes:
Conventionally, a method has been used in which a rotating section is provided in a side endoscope itself as shown in JP-A-51-91734. Further, since the degree of freedom of movement of the eyepiece increases as the number of the rotating parts increases, the one provided with two or three rotating parts has been used.

[0005] In this case, the problem is the troublesome operation of rotating the rotating unit. To avoid natural rotation due to the weight of the sideoscope itself during observation,
The rotating parts have been given considerable frictional resistance in advance, and it has been difficult to rotate a plurality of rotating parts simultaneously.
The fact that each rotating part has a large frictional resistance and cannot rotate a plurality of rotating parts at the same time means that the operation of moving the eyepiece to a desired position is cumbersome, and it is great to rotate the rotating part of the sideoscope. The need for force means that the surgical microscope also exerts a large force, and as a result, the mirror body is shaken or moved. For this reason, the operation has been interrupted, such as interrupting the operation. For this reason, the assistant who observes the sideoscope often keeps observing in a difficult posture from the operator's discretion even if the observation posture becomes difficult.

To solve this problem, it is conceivable to simultaneously fix or release all the rotating parts of the sideoscope. One of them is a method of disposing an electromagnetic brake on each rotating part. According to this, the rotating part is fixed at the time of observation, and at the time of correcting the position of the eyepiece part, the fixing is released.
The frictional resistance at the time of correction can be reduced, and the position of the eyepiece can be corrected with a small amount of force. Also, since the fixing can be released electrically, each rotating part can be operated simultaneously. As another method, an independent fixing release mechanism is provided for each rotating part, and the operating parts are combined into one place by connecting each with a wire, and by operating this, the fixing and releasing of all the rotating parts are simultaneously switched. There is a method.

[0007]

However, in the former method, there is a danger that the wiring for supplying electricity to the electromagnetic brake is disconnected during operation, and if the disconnection is made during the operation, the rotating part of the sideoscope is fixed. The rotating portion that has been left stationary or fixed is released, and the eyepiece rotates rapidly. If it remains fixed, the assistant cannot correct the position of the eyepiece, making it difficult or impossible to perform the operation, which greatly affects the operation. or,
If the eyepiece rotates rapidly, the eyepiece may hit a surgical instrument such as a scalpel used by the surgeon, or the surgeon may be surprised to make a mistake in the surgical operation, which may lead to the death of the patient. . In the device itself, the use of the electromagnetic brake not only increases the cost, but also increases the size of the device. This is a serious drawback because the operating microscope requires a large operating space in view of the operability of the operation, and the enlargement is the most inevitable.

Next, in the case of the latter method, the wire is crawled while avoiding the light flux inside the device,
In addition, since it is necessary to adjust the length in order to simultaneously release the fixing of the rotating parts, the apparatus becomes complicated and large. In addition, the wires can break and stretch due to repeated use, which is as dangerous to the patient as with the electromagnetic brakes described above.

The present invention has been made in view of the above-mentioned drawbacks, and an object of the present invention is to provide an observation apparatus of this kind which has excellent operability, is simple in configuration, and has high safety. What you want to do.

[0010]

According to a first aspect of the present invention, there is provided an observation apparatus for achieving the above object, wherein a first housing on which observation light is incident, and an optical axis of the observation light with respect to the first housing. A second housing having means for freely rotating and refracting the observation light; and a third housing having an eyepiece optical system rotatable about the optical axis of the observation light refracted with respect to the second housing. Further, a moving member which is displaced in the optical axis direction before and after refraction of the observation light and abuts on the first housing and the third housing is provided in the second housing. In addition,
The observation device according to the plan is an observation light refractor that refracts the observation light.
Light having a step and the observation light being refracted by the observation light refraction means
First housing means for emitting light in the axial direction, first housing
Relative to the optical axis of the observation light with respect to the optical axis of the observation light.
At least one observation light refracting means for refracting one observation light
Second housing means having
On the other hand, it turns around the optical axis of the observation light emitted after being refracted.
A third housing rotatable and having an eyepiece optical system.
In the first housing means, observation light is refracted.
At least one movement displaced in the optical axis direction before and after refraction
Providing a member and observing in the second housing means.
The first housing is displaced in the optical axis direction before and after refraction of light.
The first member is pressed against the moving member in the
Fixing the housing and the third housing, the first housing
The pressure contact with the moving member in the jing means is released.
Release the first housing and the third housing.
Characterized in that at least one moving member to be removed is provided.
doing.

[0011]

The moving member is displaced in the housing by manually operating a lever or a button provided outside the housing, so that the moving member comes into pressure contact with a plurality of rotating parts and simultaneously blocks the rotating movement of each rotating part. work.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the illustrated embodiments. First Embodiment FIGS. 1 and 2 show a first embodiment of the present invention. FIG. 1 is a cross-sectional view of a rotating part of an observation device, and FIG. 2 is a cross-sectional view taken along line AA of FIG. In the figure, 9 is the optical axis of the observation light incident from the mirror, 1
Reference numeral 0 denotes an observation optical axis refracted at a refraction point 12 by a mirror 11 toward an eyepiece, 13 denotes a housing having fitting holes 14 and 15 centered on the optical axes 9 and 10 and supporting the mirror 11, A housing 16 is rotatably fitted in a fitting hole 14 of the housing 13 and has a hole 17 through which a light beam corresponding to the optical axis 9 passes, and 18 is a rotatably fitted in a fitting hole 15 of the housing 13. Optical axis 10
Is a housing having a hole 19 through which the light beam passes. The housing 16 is fixed to the microscope body, and the housing 18 is attached to the eyepiece of the side endoscope. 20,
Reference numeral 21 denotes a stopper for preventing the housings 16 and 18 from coming out of the housing 13. Reference numeral 22 denotes a side surface which is movably accommodated in the housing 13 in a direction perpendicular to the reflection surface of the mirror 11 (in a direction indicated by an arrow 25) and which comes into contact with the end surfaces 23, 24 of the housings 16, 18. As shown in FIG. 2, a pair of trapezoidal moving members symmetrically arranged with respect to the optical axis 10 outside the light beam so as not to obstruct the light beam, and a pair of pressing members 26 press the pair of moving members 22 in the direction of arrow 25 respectively. , 27 is the housing 1
3 is a pair of sliding pins which are movably inserted in the direction of arrow 25 in the direction of arrow 25 and one end of which is in contact with each short side of the pair of moving members 22. The lever is pivotally attached to the housing 13 and is in contact with the other end of the pair of sliding pins 27. That is,
This embodiment is an embodiment of the first device of the present invention,
The housing 16 is the first housing, and the housing 13 is
The housing 18 is the third housing in the second housing.
In addition, the moving member 25 has a configuration corresponding to the moving member, respectively.
ing.

Since the first embodiment is constructed as described above, during observation, that is, when the lever 28 is not pressed,
The end faces 23 and 24 of the housings 16 and 18 are pressed by the moving member 22 by the elastic force of the spring 26, and the fitting portions are sandwiched between the retaining members 20 and 21 and the moving member 22, and cannot be rotated. Reference numeral 18 is fixed to the housing 13. Therefore, the assistant can perform necessary work while looking through the fixed eyepiece. Next, when the operator wants to correct the position of the eyepiece due to a change in the observation angle, the operator may perform a necessary operation while pressing the lever 28 in the direction of the arrow 31. That is, when the lever 28 is pushed in the direction of arrow 31, the sliding pin 27
5, whereby the moving member 22 is moved against the elasticity of the spring 26 and moves away from the end faces 23, 24 of the housings 16, 18. Therefore, the housings 16 and 18 are simultaneously rotatable with respect to the housing 13, and the eyepiece can be moved to a desired position. Thus, when the pressing of the lever 28 is released, the housings 16 and 18 are fixed to the housing 13 again. As described above, according to the first embodiment, it is possible to easily and inexpensively release the two rotating parts simultaneously.

Second Embodiment FIG. 3 is a sectional view showing a second embodiment of the present invention. In the figure,
32 is the optical axis of the observation light incident from the mirror body, and 33 is the optical axis 32
Is the observation optical axis after being refracted by the mirror 34,
Reference numeral 5 denotes an observation optical axis after the observation optical axis 33 is further refracted by the mirror 36, and reference numeral 37 denotes an observation optical axis toward which the observation optical axis 35 is further refracted by the mirror 38 and directed to an eyepiece (not shown). It is. Reference numeral 39 denotes two fitting holes 40 and 41 holding the mirror 34 and centering on the observation optical axes 32 and 33, respectively.
A housing to be mounted on a microscope body having
Reference numeral 2 denotes a fitting shaft 43 which holds the mirror 36 and fits into the fitting hole 41. The fitting shaft 43 is rotatably mounted on the housing 39 around the observation optical axis 33 and is coaxial with the fitting shaft 43. A housing 47 having a hole 44, a fitting shaft 45 having the observation optical axis 35 as a central axis, and a fitting hole 46 coaxial with the fitting shaft 45, 47 holds the mirror 38 and fits with the fitting shaft 45. It has a fitting hole 48, and is attached to the housing 42 so as to be rotatable about the observation optical axis 35.
7 is a housing having a fitting hole 49 having a center axis 7.

Reference numeral 50 denotes a V-groove 52 which is slidably fitted in the fitting hole 40 of the housing 39 in the direction of arrow 51.
Are formed in the fitting holes 44 and 46 of the housing 42 so as to be movable in the directions of arrows 55 and 56, respectively, and 57 is a fitting hole 49 of the housing 47.
This is a housing which is fitted movably in the direction of arrow 58, has a flange 81 formed at the right end, and holds the eyepiece of the sideoscope at the left end (not shown). Sliding tube 50,
The observation optical axis 3 is provided on each of 53 and 54 and the housing 57.
Holes 59 through which the light fluxes corresponding to 2, 33, 35 and 37 pass;
60, 61 and 62 have been kicked Oh. Numerals 63, 64 and 65 denote moving members, respectively. The moving member 63 is movable in parallel with the paper surface so as to abut the guide surface 66 in the housing 39 and the end surfaces 67 and 68 of the sliding tubes 50 and 53, respectively. The moving member 64 is arranged so as to be movable parallel to the plane of the drawing and to abut on the guide surface 69 in the housing 42 and the end surfaces 70 and 71 of the sliding tubes 50 and 54, respectively. Further, the moving member 65 is movable so as to be parallel to the plane of the drawing, and is disposed so as to contact the guide surface 72 in the housing 47, the sliding tube 54, and the end surfaces 73 and 74 of the housing 57, respectively. Each of the moving members 6 described above
3, 64, and 65 are the first so as not to obstruct the light beam.
Like the moving member 22 of the embodiment, the pair is symmetrically arranged outside the light beam (see FIG. 2). Reference numeral 75 denotes a lever having a male screw 76 which is screwed into one end of the housing 39 so as to be able to advance and retreat and has a conical tip. In this case, the center axis 77 of the male screw 76 is
The moving member 63 is separated from the center axis 78 of the groove 52 by a distance d.
Is arranged to be offset to the side of
It can enter into the groove 52. That is, the second actual
The embodiment is an embodiment of the second invention of the present invention,
A jing 39 is provided on the first housing means,
And the housing 47 are connected to the second housing means.
57 is a third housing means, which includes a moving member 63 and a sliding tube.
50 is a moving member provided in the first housing means,
The moving members 64 and 65 and the sliding tubes 53 and 54 are the second housings.
Configuration corresponding to the moving members provided in the
It has become.

Since the second embodiment is constructed as described above, when the assistant wants to fix the eyepiece, he or she can turn the lever 75 so that the male screw 76 enters the V groove 52. That is, when the male screw 76 is screwed, the tip conical portion attempts to enter the V-groove 52 along the slope of the V-groove, so that the sliding tube 50 is slid in the direction of the arrow 79. Thus, when the sliding tube 50 advances in the direction of arrow 79, the moving member 63 is pressed, and the moving member 63 is moved along the guide surface 66 of the housing 39, so that the moving member 63 moves through the sliding tube 53. The result is that the member 64 is pressed. Moving member 64 pressed by sliding tube 53
Moves along the guide surface 69 of the housing 42, so that the moving member 64 presses the moving member 65 via the sliding tube 54. Moving member 65 pressed by sliding tube 54
Moves along the guide surface 72 of the housing 47, so that the moving member 65 presses the housing 57 in the direction of the arrow 80. The flange 81 formed at the end of the housing 57 is connected to the moving member 65 and the housing 4.
7 and the positioning surface 82.

[0017] By this series of action, rotation about the observation optical axis 33 of the housing 42 relative to the housing 39 is prevented by the friction caused by pressure contact between the moving member 63 and 64 and sliding tube 53, a housing for the housings 42 4
The rotation of the housing 7 about the observation optical axis 35 is hindered by the friction caused by the press-contact between the moving members 64 and 65 and the slide tube 54, and the rotation of the housing 57 with respect to the housing 47 is performed by the moving member 65 and the housing 57 and the housing 57. It is hindered by friction caused by pressure contact with the positioning surface 82 of the housing 47. Therefore, all the rotating parts cannot be rotated, and the eyepiece is fixed.

To move the position of the eyepiece, the lever 75 may be turned in a direction in which the male screw 76 is loosened. That is, if the male screw 76 is moved rightward in FIG. 3 by turning the lever 75, the conical tip of the male screw 76
Since the sliding tube 50 is released from the groove 52, the force of the sliding tube 50 pressing the moving member 63 is released, and the above-described friction between the portions is all eliminated at the same time, and the rotating portions can rotate. According to the second embodiment, the operating parts such as the lever 75 can be installed at an easy-to-operate position, and even if the number of rotating parts increases, the fixing of all the rotating parts can be simultaneously released. Operability is improved.

Third Embodiment FIG. 4 is a sectional view showing a third embodiment of the present invention. Since this embodiment is an improvement of the first embodiment, FIG.
The same members as those in the embodiment are denoted by the same reference numerals, and description thereof will be omitted. In the drawing, 83 is a housing made of a magnetic material such as iron, and 84 and 85 are rotatably mounted on the housing 83 around the observation optical axes 9 and 10, respectively, and are made of a magnetic material such as iron. In the housing, the housing 84 is fixed to the microscope body, and the eyepiece of the side endoscope is attached to the housing 85. Reference numeral 86 denotes a permanent magnet, 87 denotes a button attached to the housing 83 so as to be movable in a direction perpendicular to the reflection surface of the mirror 11, and has a permanent magnet 86 fixed at the tip.
5 is a spring disposed between the housing 83 and the button 87 so as to always contact the button 5.

Since the third embodiment is configured as described above, the permanent magnet 86 is attracted to the housings 84 and 85 in the normal state where the assistant observes, and the rotation of the housings 84 and 85 relative to the housing 83 is performed. Is hindered. Therefore, the eyepiece held by the housing 85 is fixed to the mirror fixed to the housing 84. When the assistant pushes the button 87 in the direction of arrow 89 against the spring 88 to move the eyepiece, the permanent magnet 8
Since the housing 6 is separated from the housings 84 and 85, the fixed state between the housings 84 and 85 by the magnetic force is released, and the housing 6 can rotate with respect to the housing 83. Therefore, the housings 84 and 85 rotate about the optical axes 9 and 10, respectively, and the eyepiece can be moved. As described above, according to the third embodiment, since the rotating portion is fixed by using the magnetic force of the permanent magnet, the size of the apparatus can be significantly reduced.

[0021]

As described above, according to the present invention, the fixing of the two rotating parts for moving the eyepiece can be simultaneously released by manually moving the moving member, so that the apparatus can be made compact and simple. In addition to being able to be configured, it is possible to provide an inexpensive observation device with excellent operability and high safety.

[Brief description of the drawings]

FIG. 1 is a sectional view of a main part of a first embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a sectional view of a main part of a second embodiment of the present invention.

FIG. 4 is a sectional view of a main part of a third embodiment of the present invention.

FIG. 5 is a schematic view of a surgical microscope observing a surgical site from a vertical direction.

FIG. 6 is a schematic view similar to FIG. 1, observing the operation site from a direction inclined by α °.

[Explanation of symbols]

9, 10, 32, 33, 35, 37 Observation optical axis, 11, 34, 36, 38 mirror, 13, 16, 18, 39, 42, 47, 57, 83 , 8
4,85 housing, 14,15,40,41,44,46,48,49
Fitting holes, 22, 63, 64, 65, 86
Moving member, 23, 24, 67, 68, 70, 71, 73, 74
End face, 26,88
Spring, 27
Pins, 28, 75
Lever, 50, 53, 54
Sliding tube, 52
V groove, 76
Male thread, 87
button.

────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Shigeo Tokunaga 2 43-2 Hatagaya, Shibuya-ku, Tokyo Inside Olympus Optical Co., Ltd. (72) Inventor Koji Yasunaga 24-2 43 Hatagaya, Shibuya-ku, Tokyo Olympus In Optical Industry Co., Ltd. (72) Inventor Hiroshi Fujiwara 2-34-2 Hatagaya, Shibuya-ku, Tokyo In Olympus Optical Industry Co., Ltd. (56) References JP-A-57-124323 (JP, A) 37893 (JP, U) Japanese Patent Publication No. 55-7655 (JP, B2) Japanese Utility Model Publication No. 38-27966 (JP, Y1) (58) Field surveyed (Int. Cl. ⁶ , DB name) G02B 21/00-21 / 36

Claims (2)

(57) [Scope of request for utility model registration] A second housing including a first housing on which the observation light is incident, and a unit rotatable about the optical axis of the observation light with respect to the first housing and refracting the observation light.
A housing, and a third housing rotatable about an optical axis of the observation light refracted with respect to the second housing and having an eyepiece optical system, wherein the observation light is provided in the second housing. A movable member which is displaced in an optical axis direction before and after the refraction and abuts on the first housing and the third housing, wherein the eyepiece optical system is displaceable. 2. An observation light refracting means for refracting observation light.
And the observation light is refracted by the observation light refraction means in the optical axis direction.
First housing means for emitting light to the first housing;
Means for rotating the observation light around the emission optical axis of the observation light.
And at least one observation light bending part for refracting the observation light.
Second housing means having folding means, and said second housing
The observation light emitted after being refracted
A third eye rotatable about the optical axis and having an eyepiece optical system;
And a housing within the first housing means.
In addition, the observation light is displaced in the optical axis direction before and after refraction.
At least one moving member is provided, and
In the housing means, light before and after refraction of the observation light
Displaces in the axial direction and moves to the moving member in the first housing means.
The first housing and the third housing are pressed against each other.
Fixing the housing and moving in the first housing means.
When the pressure contact with the member is released, the first housing
At least to release the fixing between the ring and the third housing.
A moving member is also provided.
An observation device with a freely displaceable eye optical system.