JPH0698895A - Mirror body moving apparatus for microscope for operation - Google Patents

Abstract

PURPOSE:To enable the miniaturizing of a microscope for operation which allows adaptation to various operation fields. CONSTITUTION:A microscope for operation which has a means for moving positions and angles of mirror bodies 9 and 34 is provided with two fulcrums 13 and 13 moving integral with the mirror body 9 to decide the positions and angles of the mirror bodies, guide means A, B and C to decide the direction of moving the fulcrums 13, guide means F and R common to the two fulcrums 13 while being provided with a plurality of guide means A, B and C different in moving locus. The guide means A, B and C are selected or individual guide means 36 and 38 are provided with respect to the two fulcrums 35 and 37. The fulcrums 35 and 37 are so arranged to move interlocking by an interlocking means having a plurality of interlocking ratios and a selection means is provided to select the interlocking ratios.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mirror moving device for a surgical microscope.

[0002]

2. Description of the Related Art Conventional surgical microscopes include a microscope body which is a stereoscopic microscope for magnifying and observing a surgical site, and a mount unit which is an arm and a mount for moving the microscope body to a desired position and angle. It is composed of. It has been considered that the gantry part moves in various ways with the advancement of surgery.

For example, Japanese Examined Patent Publication (Kokoku) No. 3-21887 discloses a mirror body moving device in which the mirror body is electrically moved in two orthogonal directions in a plane with respect to the mount body mounted between the mirror body and the mount stand. It is used in the field of ophthalmology where surgery is performed while observing the surgical site in a minute and planar manner at a constant angle.

Further, Japanese Patent Laid-Open No. 63-54156 discloses that
Also disclosed is a mirror elevation apparatus in which a mirror rotates about two orthogonal axes in a plane with respect to the mount mounted between the mirror and the mount. It is used in the field of orthopedics and plastic surgery, where surgery is performed while observing from various angles.

Further, Japanese Patent Application Laid-Open No. 63-296743 discloses a lens-body elevation device in which the center of the rotation is located at the focal position of the lens body, and a minute operation portion is observed at various angles. It is used in the field of neurosurgery while performing surgery.

[0006]

As described above, there is provided a surgical microscope having a pedestal portion dedicated to each surgical field or technique in each field. However, it is very uneconomical to prepare a surgical microscope with a dedicated mount for each field in a general hospital with multiple fields, because there are many common parts such as the body section. . In addition, storage space is required for the number of surgical microscopes.

Japanese Patent Publication No. 3-2 is one of the means for solving this problem.
It is conceivable that only the mirror moving device attached between the mirror and the mount disclosed in Japanese Patent No. 1887 and Japanese Patent Laid-Open No. 63-54156 can be replaced so as to be compatible with each field. Is troublesome and has a problem that it cannot cope with sudden surgery.

Further, the replacement work causes an unreliable factor such as a work mistake, leading to a reduction in the safety of the entire surgical microscope. In addition, a surgical microscope which can be used in a plurality of fields by combining other means with the mirror moving device disclosed in Japanese Patent Publication No. 3-21887 or Japanese Patent Laid-Open No. 63-54156 is also conceivable. Inevitably, the weight increases, and it cannot be said that it is a surgical microscope that is easy to use in each field.

In view of the above problems, it is an object of the present invention to provide a surgical microscope which can be adapted to each surgical field in a small size.

[0010]

DISCLOSURE OF THE INVENTION The present invention relates to a mirror-body moving device for a surgical microscope capable of freely moving the position and angle of the mirror-body, and a mirror-body mounting shaft constituting the mirror-body moving device. Two fulcrums for moving the mirror body are arranged on the axis, and a plurality of guide means for moving the fulcrum in conjunction with the mirror body moving device, and a selection for selecting one of the guide means. And means.

[0011]

In the same plane, the moving body moves along a predetermined locus (including position, direction, angle and speed) by selecting the guide means or the transmission mechanism. The tilt angle can be switched arbitrarily.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a schematic configuration diagram of a mirror moving device for a surgical microscope, wherein 1 is a mirror mounting portion mounted on the tip of an arm of a surgical microscope (not shown) that can be moved three-dimensionally, and 2 is a mirror mounting. Arm mounting shaft integrally mounted on the part 1, 3
Is a housing integrally attached to the arm attachment shaft 2,
Reference numeral 4 denotes a selection knob projecting from the housing 3 to the outside. Reference numeral 5 also denotes a lens body mounting shaft projecting from the housing 3. The device 6 is configured. Also,
A mirror body 9 provided with an objective lens 7 and an eyepiece lens 8 is mounted on the mirror body mounting shaft 5.

FIG. 2 is a perspective view showing an internal mechanism of the housing 3 in the mirror moving device 6 shown in FIG. 10 is a pair of guide rods fixed to the housing 3, 11 is a guide rod
U-shaped slide members A, B, and C, which are guided by 10 and slidably move in the direction of arrow P, are a pair of racks fixed to the slide member 11, respectively.
B and C are formed in different shapes. That is, the rack A is curved in a downward warp shape with the meshing surface outward, and the rack C is curved in an upward camber shape with the meshing surface inward, and the rack B is curved in a substantially straight line (planar) shape. Has become.

Reference numeral 12 denotes a moving body having a built-in drive source (not shown). Two drive shafts 13 connected to the drive source protrude in parallel from the moving body 12 and both ends of one drive shaft. And a pinion F is attached to both ends of the other drive shaft 13 in pairs. This pinion F, R
Is a pinion that meshes with any of the racks A, B, and C.

The moving body 12 is restricted to move only in a plane parallel to the arrow P with respect to the housing 3 and orthogonal to the mirror mounting shaft 5, and the pinions F and R are always racked by elastic members (not shown). It is urged in the direction of being pressed by any of A, B, and C.

The selective knob 4 is attached to the outside by being exposed from the slide member 11 through the hole 14 of the housing 3.
The mirror body mounting shaft 5 is mounted on the moving body 12 so as to be exposed to the outside from the elongated hole 15 below the housing 3.

Racks A, B and C and pinions F and R are shown in FIG.
The principle configuration related to the operation with the mirror body 9 is shown. In the figure,
The racks A, B, and C are configured so that the tooth surfaces have the same height at two points a and b, and the pitches match. The contact points between the racks A, B, C and the pinion F are a
When it is at the point, the contact with the pinion R is also configured to be exactly b.

Further, the rack A has a shape centered on the observation point O of the mirror body 9 and has a shape along an arc of a circle passing through the points a and b, and the rack B has an observation optical axis 16 of the mirror body (mirror body mounting axis center). The rack C is a point 17 on the extension line of the observation optical axis 16 of the mirror body 9 in a straight line perpendicular to
Is the center of the circle and passes through the points a and b along the arc of the circle.

Now, the light emitted from the observation part O is the objective lens 7,
The image is observed by the operator through the variable-magnification optical system, the imaging optical system, and the eyepiece 8 which are not shown in the mirror body 9. Rack A,
With the contact points between B and C and pinions F and R being located at points a and b, respectively, as shown in FIG. 3, the operator moves the selective knob 4 to the arrow P (FIG. 2) according to the operation content. When it is moved in the direction, which of the racks A, B and C the pinions F and R mesh with is selected.

Then, a switch (not shown) is used to move the mobile unit.
When the drive source in 12 is actuated, the rotational movement of the drive shaft 13 is transmitted to the racks A, B and C via the pinions F and R, so that the moving body 12 meshes with any one of the selected racks. And moves along the rack, and the mirror body 9 attached thereto via the mirror body mounting shaft 5 also moves integrally.

First, when the rack A is selected, the mirror 9
As shown by the arrow in FIG. 4, since it is tilted around the observation part O, it is suitable for surgery in the field of neurosurgery.

When the rack B is selected, the mirror 9
Since it moves in a plane as shown by the arrow in FIG. 5, it is suitable for surgery in the field of ophthalmology.

Further, when the rack C is selected, the mirror body 9 tilts while moving the observation point largely around the point 17 above the mirror body 9 as shown by the arrow in FIG. Suitable for surgery in the field of orthopedics and plastic surgery.

As described above, the first embodiment has a simple structure and can be provided at low cost. Also, because the mirror body moves along the shape of the rack, the movement is accurate,
Moreover, since the object moves on a locus whose distance from the center of rotation does not change, there is almost no focus deviation. Further, by making the mirror rotatable about the observation optical axis 16 with respect to the mirror mounting axis, various movements (including position, direction, angle and speed) and tilting are possible.

7 to 9 show a second embodiment of the present invention.
In FIG. 7, reference numeral 21 denotes an arm mounting shaft that is integrally mounted to the mirror mounting portion, and the arm mounting shaft 21 is integrally provided with a housing 22 of the mirror moving device. It is similar to the case of the example. 23 and 24 are arm mounting shafts 21
A pair of parallel first and second guide rods 25 and 26 fixed to the housing 22 in a direction orthogonal to the direction are first and second moving bodies which are guided by the guide rods 23 and 24 and move in the arrow P direction. Is.

The moving bodies 25 and 26 have first and second moving bodies, respectively.
Racks 27 and 28 are formed parallel to the guide rods 23 and 24. 29 and 30 are perpendicular to the arm mounting shaft 22 and
23 and 24 are parallel first and second drive shafts that are rotatably provided in the housing 22 in the vertical direction, and first and second pinions 31 and 32 are fixed to the tips thereof, respectively. . The pinions 31 and 32 mesh with the racks 27 and 28, respectively,
Due to this meshing, the moving bodies 25 and 26 move as described later.

A mirror body 34 is mounted on the mirror body mounting shaft 33. Reference numeral 35 is a cylindrical first pin attached to the first moving body 25, and 36 is an elongated hole formed in the mirror body attachment shaft 33.
It has the same width as the diameter of the first pin 35, and the mirror body mounting shaft 33
Is the first pin 35 that moves in the elongated hole 36 with respect to the first moving body 25.
It is mounted movably through. Similarly, 37 is a cylindrical second pin attached to the second moving body 26,
It is fitted in the hole 38 of the lens body mounting shaft, and the lens body mounting shaft 33 is the second moving body.
It is configured to be rotatable about a pin 37 parallel to the paper surface with respect to 26.

FIG. 8 shows the first and second pinions in FIG.
FIG. 31 is a partial cross-sectional view of 31,32 viewed from the side. In the figure,
M is a motor mounted in the housing 22. The first drive shaft 29 is integrally connected to the motor shaft of the motor M,
The above-mentioned first pinion 31 is fixed to the end portion thereof, and gears G ₁ and G ₂ are fixed to the middle portion thereof.

Reference numeral 39 designates a housing parallel to the drive shafts 29 and 30.
It is provided so as to be rotatable with respect to 22 and movable in the axial direction.
It is an idle shaft and one end protruding from the housing 22
A selective knob 40 is provided at the other end, and a gear G is provided at the other end inside the housing 22._Five
However, there is a gear G in the center. ₃And gear G_FourIs fixed
ing.

Second drive shaft supported by the housing 22
The second pinion 32 is rotatably attached to the tip of the gear 30, a wide gear G ₆ is fixed to the middle, and a lock gear G ₇ is fixed to the other end. The lock gear G ₇ is a gear that is also fixed to the housing 22 and does not rotate.

The gear G ₆ has a width sufficient to constantly mesh with the gear G ₅ of the idle shaft 39 even when the idle shaft 39 moves. Further, by operating the selection knob 40 to move the idle shaft 39 in the axial direction, the gears G ₃ and G ₁ are meshed,
The respective gears are arranged so that one of the three gears of the gear G ₄ and the gear G ₂ or the first drive shaft 29 and the idle shaft 39 which do not mesh can be selected.

Further, the gear of the first drive shaft 29 and the idle shaft 39
The gear G ₃ is configured to mesh with the lock gear G ₇ of the second drive shaft 30 when none of the gears is meshed. It is when the idle shaft 39 is in the most protruded state that it meshes with the lock gear G ₇ , and the idle shaft 39 is also in the second position.
The drive shaft 30 is also locked so that it cannot rotate.

Here, the reduction ratio of the gears G ₂ and G ₄ and the gears G ₅ and G ₆ is 1: 1, and the gears G ₁ and G ₃ are configured so that the rotational force is transmitted with a predetermined reduction ratio. Has been done.

FIG. 9 shows the reduction ratios of the first and second guide rods 23 and 24, the first and second pins 35 and 37, and the gears G ₁ and G ₃ , and the mirror body 3.
It is the figure which showed the relationship with 4 in principle. From the observation section O when the mirror body mounting shaft 33 is in the vertical state, the first and second guide rods
If the distances to 23 and 24 are L _{1 and} L _{2 ,} respectively, the gear G ₁
And the reduction ratio of gear G ₃ is set to L ₂ / L ₁ .

Now, when the motor M is driven, the first pin 35 becomes X.
_{If it} moves by ₁ , the second pin 37 moves by X ₂ in parallel in the same direction, that is, by X ₂ = (L ₂ / L ₁ ) X ₁ , and the observation light axis 41 of the mirror body 34 is always observed. Tilt by θ so as to intersect with O. However, the mirror 43 has a viewing optical axis 41 with respect to the viewing section O.
Movement amount in the direction △ _L only, that is, the receding only △ _L = [(1 / cos θ) -1] L _2.

In the second embodiment, as in the case of the first embodiment, the surgeon observes the vertical axis of the body mounting axis and the surgeon operates the selective knob 40 and the idle shaft 39 depending on the operation contents. Of the gears G ₁ and G ₃ mesh, gears G ₂ and G ₄ mesh, or gears G ₃ and G ₇ mesh, one of three combinations is selected. To be done.

Next, when the motor M is operated by a switch (not shown), the first drive shaft 29 and the first pinion 31 rotate together, and the gears G ₁ and G ₃ (deceleration transmission) or the gear G ₂ and When G ₄ (constant speed transmission) is meshed, the rotation is transmitted to the idle shaft 39 via these gears, and the second drive shaft 30 and the second pinion are meshed via the meshing of the gears G ₅ and G _6.
The rotation is also transmitted to 32.

Here, the mirror body 34 moves in the direction of the observation optical axis 41 by Δ _L when the gears G ₁ and G ₃ are engaged (FIG. 9).
However, since the first embodiment is inclined around the observation portion O as shown by the arrow in FIG. 4, it is suitable for surgery in the field of neurosurgery.

When the gears G ₂ and G ₄ are meshed with each other, the first
The _second pinion is the same speed, the mirror body rotates in the same direction to move in the plane as indicated by arrows in FIG. 5, conforms to surgery ophthalmic field.

When the gears G ₃ and G ₇ are in mesh with each other, as described above, the rotations of the second drive shaft 30 and the second pinion 32 are locked, but only the first pinion 31 rotates and the mirror body is rotated. As shown by the arrow in FIG. 6, since it is inclined while moving the observation point O largely around the pin (pin 37 in FIG. 7) above the mirror body, it is possible to handle surgery in the field of orthopedics and plastic surgery.

In the case of the second embodiment, since the gear switching mechanism is used without using a plurality of guide members as in the rack of the first embodiment, further weight reduction is promoted, and substantially the same as in the first embodiment. The effect of is obtained.

Further, the movement amount △ _L of the observation optical axis 41 direction when the gear G _1, G ₃ is engaged, so indicated by △ _L = [(1 / cos θ) -1] L _2, observation light If a known focusing mechanism that moves the mirror body 34 in the direction of the axis 41 is configured to operate in conjunction with the angle θ, there is a new advantage that focus correction can be performed automatically.

Next, a third embodiment of the present invention will be described. Figure
In FIG. 10, 50 is a lens body mounting shaft to which a mirror body (not shown) is mounted, 51 is an arm mounting shaft, and 52 is a housing of the lens barrel moving device integrally mounted on the arm mounting shaft 51. 53,5
Reference numeral 4 designates first and second moving bodies which are supported by the housing 52 via a ball guide 55 so as to be movable in a direction perpendicular to the plane of the drawing. These movements are performed by a motor M (not shown).
₁ and M ₂ (shown in FIG. 12) are driven.

FIG. 11 is a partial sectional view as seen from the direction of arrow P shown in FIG. In the figure, reference numerals 56 and 57 denote third and fourth moving bodies which are movably supported by the ball guides 55 in the direction perpendicular to the paper surface with respect to the moving bodies 53 and 54, respectively. Not shown third and fourth motors M ₃ , M
₄ (shown in FIG. 12).

Reference numerals 58 and 59 denote first and second ball members rotatably supported by the movable bodies 56 and 57, respectively, and the mirror body mounting shaft 50.
Is integrally attached to the second ball member 59 through the second ball member 59, and is movably supported in a fitting hole 60 formed in the first ball member 58.

FIG. 12 is a block diagram showing the relationship between the _first and second motors M ₁ and M ₂ . The motors M ₁ , M ₂ , M ₃ , M ₄ have first to fourth tachogenerators 61, 6 for always detecting the rotation speed.
2,63,64 are linked.

The first motor M ₁ is connected to a driving power source (not shown). The first tacho generator 61 is a first motor M
_It is connected to a selector circuit 65 to send a signal according to the number of revolutions of _{1, and} the selector circuit 65 sends a signal obtained by converting a signal according to the number of revolutions of the motor M ₁ at a constant ratio.
Connected to 66.

Similarly, the second tachogenerator 62 also has
It is connected to the comparison circuit 66 to send a signal corresponding to the second rotational speed of the motor M _2, the second to determine the second current value of the motor M ₂ as further comparison value of the comparator circuit 66 are the same It is connected to the drive power supply 67 of the motor M ₂ .

Here, the selector circuit 65 outputs a signal according to the number of revolutions of the first tacho-generator 61, but as shown in FIG. 9 of the second embodiment, the ratio of the number of revolutions is L ₂ / L ₁ . Signal that is decelerated by, or leave the signal of the first tacho generator 61 unchanged, or
It is configured so that one of three methods can be selected as to whether to convert the signal of 1 to a signal that does not rotate at all.

The third and fourth motors M ₃ and M ₄ are also constructed in the same relationship as described above, and the selector circuit 65 is synchronized.

The operation of the third embodiment will be described. The light emitted from the observation section is observed by the operator as in the previous embodiment. When the surgeon operates a select button (not shown) according to the operation contents in a state where the mirror body mounting shaft 50 is vertical, the conversion value of the selector circuit 65 is selected.

Next, a switch (not shown) is used to make
When the motors M ₁ , M ₂ , M ₃ , and M ₄ are operated, the first and second moving bodies 53 and 54 move in the same direction, and the third and fourth moving bodies 56 and 57.
Moves in a direction perpendicular to the moving bodies 53, 54, and the first and second ball members 58, 59 respectively move in the two directions in the plane orthogonal to the first and second pins 35, 54 in the case of the second embodiment. Moves the mirror body in the same way as 37. That is, the mirror body mounting shaft 50 slides in the axial direction within the fitting hole of the ball member 58.

Here, when the rotation speed is converted into a signal that is decelerated at the ratio of L ₂ / L ₁ , the second and fourth moving bodies 54 and 57 are compared with the first and third moving bodies 53 and 56. Moves at a deceleration rate of L ₂ / L ₁ . In this case, the mirror body moves corresponding to FIG.

When the signals from the first and third tachogenerators 61 and 63 are used as they are, the moving bodies 53, 54, 56 and 57 move at a constant speed. In this case, the mirror body moves corresponding to FIG.

When the signals are converted so that the first and third tachogenerators 63 and 64 do not rotate, the second and fourth moving bodies 54,5
7 stops, only the first and third moving bodies 53 and 56 move, and the mirror body moves corresponding to FIG.

In the third embodiment, the orthogonal movement of the mirror body can be selected in the plane as described above, which is more practical. Further, since the movement of the mirror body can be selected electrically rather than mechanically, the operation becomes easy.

[0057]

As described above, the microscope body moving device for a surgical microscope of the present invention does not require a dedicated moving device for each surgical field or reassembling the members each time.
In addition to being able to easily select and switch according to each surgery,
It can be made compact.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of a first embodiment of a microscope body moving device for a surgical microscope according to the present invention.

2 is a perspective view showing an internal mechanism of the housing shown in FIG. 1. FIG.

FIG. 3 is a schematic diagram showing a relation between a rack, a pinion, and a mirror body.

FIG. 4 is a diagram showing a relationship between a combined engagement of a rack and a pinion and a mirror body position.

FIG. 5 is a diagram showing a relationship between combined engagement of a rack and a pinion and a position of a mirror body.

FIG. 6 is a diagram showing a relationship between a combined engagement of a rack and a pinion and a position of a mirror body.

FIG. 7 is a schematic configuration diagram of a second embodiment of the mirror moving device according to the present invention.

8 is a cross-sectional view of FIG.

FIG. 9 is a diagram showing a relationship between gear engagement and a moving position of a mirror body.

FIG. 10 is a schematic configuration diagram of a third embodiment of the mirror moving device according to the present invention.

11 is a partial cross-sectional view seen from the direction of arrow P shown in FIG.

FIG. 12 is a block diagram of an electric circuit portion of a third embodiment according to the present invention.

[Explanation of symbols]

1 Mirror mounting part 2 Arm mounting shaft 3 Housing 4,40 Selective knob 5,33,50 Mirror mounting shaft 6 Mirror moving device 9,34 Mirror 10,23,24 Guide rod 11 Slide member 12,25, 26 _, Moving object 53,54,56,57 Moving object 13,29,30 Drive axis 16,41 Observation optical axis (mirror mounting axis) O, 17 points (fulcrum) A, B, C, 27,28 Rack 31,32, F, R Pinion 35,36 pin 55 Ball guide 58,59 Ball member 61,62,63,64 Tacho generator 65 Selector 66 Comparison circuit 67 Drive power supply G _{1 to} G ₇ Gears M, M ₁ , M ₂ , M ₃ , M ₄ motor

─────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] March 5, 1993

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] Claim 1

[Correction method] Change

[Correction content]

[Procedure Amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0010

[Correction method] Change

[Correction content]

[0010]

According to the present invention, in a surgical microscope having means for moving the position and angle of the mirror body, the microscope is moved integrally with the mirror body to determine the position and angle. One fulcrum, a guide means for determining the moving direction of the two fulcrums, a common guide means for the two fulcrums, and a plurality of guide means having different movement trajectories are provided. The guides are selected or provided individually for the two fulcrums, and the two fulcrums are configured to move in an interlocking manner by interlocking means having a plurality of interlocking ratios. It is characterized by having a selecting means for selecting.

[Procedure 3]

[Document name to be amended] Statement

[Correction target item name] 0011

[Correction method] Change

[Correction content]

[0011]

By providing two fulcrums that move integrally with the mirror body and selecting a guide means and a transmission mechanism for the position, moving direction, moving speed, etc. of each fulcrum, the moving body moves along a predetermined locus. The moving direction and tilt angle of the mirror body mounting shaft with respect to the moving body can be arbitrarily switched.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0018

[Correction method] Change

[Correction content]

Further, the rack A has a shape centered on the observation point O of the mirror body 9 and has a shape along an arc of a circle passing through the points a and b, and the rack B has a linear shape perpendicular to the observation optical axis 16 of the mirror body 9. In addition, the rack C is configured to have a shape centered on a point 17 on the extension line of the observation optical axis 16 of the mirror body 9 and along a circular arc of a circle passing through the points a and b.

[Procedure Amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0026

[Correction method] Change

[Correction content]

The moving bodies 25 and 26 have first and second moving bodies, respectively.
Racks 27 and 28 are formed parallel to the guide rods 23 and 24. 29 and 30 are perpendicular to the arm mounting shaft 21 and
23 and 24 are parallel first and second drive shafts that are rotatably provided in the housing 22 in the vertical direction, and first and second pinions 31 and 32 are fixed to the tips thereof, respectively. . The pinions 31 and 32 mesh with the racks 27 and 28, respectively,
Due to this meshing, the moving bodies 25 and 26 move as described later.

[Procedure correction 6]

[Document name to be amended] Statement

[Name of item to be corrected] 0030

[Correction method] Change

[Correction content]

Second drive shaft supported by the housing 22
The above-mentioned second pinion 32 is rotatably attached to the tip of 30 and a wide gear G ₆ is fixed in the middle. The lock gear G ₇ is a non-rotating gear fixed to the housing 22.

[Procedure Amendment 7]

[Document name to be amended] Statement

[Name of item to be corrected] 0032

[Correction method] Change

[Correction content]

Further, the gear of the first drive shaft 29 and the idle shaft 39
The gear G ₃ is configured to mesh with the lock gear G ₇ fixed to the housing 22 when none of the gears is meshed. It is when the idle shaft 39 is in the most protruded state that it meshes with the lock gear G ₇ , and the idle shaft 39 and the second drive shaft 30 are locked so as not to rotate.

[Procedure Amendment 8]

[Document name to be amended] Statement

[Correction target item name] 0056

[Correction method] Change

[Correction content]

In the third embodiment, not only the movement of the mirror body in one plane but also the movement in the plane orthogonal thereto can be selected as described above, which is more practical. is there. Further, since the movement of the mirror body can be selected electrically rather than mechanically, the operation becomes easy.

[Procedure Amendment 9]

[Document name to be amended] Statement

[Correction target item name] Explanation of code

[Correction method] Change

[Correction content]

[Explanation of symbols] 1 Mirror mounting part 2,21,51 Arm mounting shaft 3,22,52 Housing 4,40 Selective knob 5,33,50 Mirror mounting shaft 6 Mirror moving device 9,34 Mirror 10 , 23,24 Guide rod 11 Slide member 12,25,26 _, Moving body 53,54,56,57 Moving body 13,29,30 Drive axis 16,41 Observation optical axis O, 17 Points A, B, C, 27 , 28 racks 31 and 32, F, R pinion 35, 37 pins 36 and 38 holes 55 ball guides 58, 59 the ball member 61, 62, 63, 64 tachogenerator 65 selector 66 the comparator circuit 67 drives power source G ₁ ~G ₇ gear M, M ₁ , M ₂ , M ₃ , M ₄ Motor ──────────────────────────────────── ─────────────────

[Procedure amendment]

[Submission date] March 5, 1993

[Procedure Amendment 1]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 3

[Correction method] Change

[Correction content]

[Figure 3]

Claims (1)

[Claims] 1. A mirror moving device for a surgical microscope capable of freely moving the position and angle of the mirror, wherein the moving of the mirror is on the axis of a mirror mounting shaft that constitutes the mirror moving device. It is configured such that two fulcrums are provided, and the mirror moving device is provided with a plurality of guide means for interlocking movement of the fulcrums and a selection means for selecting one of the guide means. A device for moving the body of a surgical microscope.