JP2022109478A - Mouse switch fitting structure - Google Patents

Abstract

To provide a fitting structure of a mouse switch capable of adjusting an angle between a vertical position and a longitudinal position of the mouse switch by operating one operation part.SOLUTION: A first arm 4 and a second arm 5 are freely rotatable by first to third rotational shafts R1 to R3, so a vertical position and a longitudinal position of a mouse switch 6 are adjustable and an angle is changeable arbitrarily. The handle 17 is operated, a tapered surface 15 of the third rotational shaft R3 pressurizes a first shaft pressure transmission part G1 and a second shaft pressure transmission part G2 respectively, the first shaft pressure transmission part G1 is in pressure contact with a fixed bar 3 of a surgical microscope 1, and the second shaft pressure transmission part G2 is in pressure contact with a projection part 10 of the mouse switch 6, so that rotations of the first to third rotational shafts R1 to R3 are locked and the positions and angles can be fixed.SELECTED DRAWING: Figure 6

Description

The present invention relates to a mounting structure for a mouse switch.

In fields such as brain surgery, surgery is performed in an enlarged field of view while observing the surgical site with a surgical microscope. This type of surgical microscope has multiple functions such as focus adjustment and zoom adjustment. Since the operator keeps his eye on the eyepiece of the surgical microscope and both hands are used for the operation, a mouse switch that can be operated with the mouth is used to switch functions.

The surgical microscope is provided with a vertical bar that can move up and down, a horizontal bar that can move back and forth is provided on the vertical bar, and a mouse switch is supported at one end of the horizontal bar. The vertical position of the mouse switch can be adjusted by vertically moving the vertical bar together with the horizontal bar relative to the surgical microscope, and the vertical position can be fixed by a clamp provided on the vertical bar.

By moving the horizontal bar back and forth with respect to the vertical bar, the front and back position of the mouse switch can be adjusted, and the front and back position can be fixed by a clamp provided on the horizontal bar. In this manner, the up-down position and front-rear position of the mouse switch can be adjusted to match the position of the operator's mouth (see, for example, Patent Document 1).

Japanese Patent No. 4458907

However, in such a conventional related technique, it is necessary to operate two clamps in order to adjust the vertical position and the front-rear position of the mouse switch, so the operation is troublesome. In addition, the angle of the mouse switch cannot be changed simply by moving the mouse switch up and down and back and forth.

The present invention has been made in view of such conventional related art, and provides a mounting structure for a mouse switch that can adjust the vertical position, front-rear position, and angle of the mouse switch by operating a single operation unit. intended to provide.

According to the first technical aspect of the present invention, the upper end is fixed between the left and right eyepieces provided on the front side of the surgical microscope, and the lower end is provided with an arc centered on a first rotation axis extending in the left-right direction. a fixed bar having a surface formed thereon; a protrusion formed on the upper portion of the mouse switch and having an arcuate surface formed on the upper side thereof about a second rotation axis extending in the left-right direction; A first arm that is rotatably attached to the part about a first rotation axis and has a first axial pressure transmission part housed therein; A second arm that is rotatably attached to the center and accommodates a second axial pressure transmission portion therein, and a lower end portion of the first arm and an upper end portion of the second arm that are rotatable and slidable in the horizontal direction. It is attached to the first arm or the second arm in a state of being engaged with one end of the third rotating shaft having a conical side tapered surface whose diameter gradually increases in the left-right direction, and the third rotating shaft. an operation portion for sliding the rotating shaft in the left-right direction, when the tapered surface of the third rotating shaft slides in the direction toward the first axial pressure transmitting portion and the second axial pressure transmitting portion by operating the operating portion; , the tapered surface presses the lower end of the first axial pressure transmission part and the upper end of the second axial pressure transmission part, the upper end of the first axial pressure transmission part presses against the arcuate surface of the fixed bar, and the second axial pressure transmission The lower end of the portion is pressed against the arcuate surface of the convex portion.

According to the second technical aspect of the present invention, the operating portion is screwed into the threaded portion formed at one end of the third rotating shaft, and the operating portion is attached to the lower end portion of the first arm or the upper end portion of the second arm. A rotatably mounted handle is characterized in that the third rotating shaft slides left and right by rotating the handle.

According to the first technical aspect of the present invention, since the first arm and the second arm are rotatable about the first to third rotating shafts, the mouse switch can be adjusted in vertical position and forward/backward position, and the angle can also be adjusted. It can be changed arbitrarily. When the operating portion is operated to slide the tapered surface of the third rotating shaft toward the first axial pressure transmitting portion and the second axial pressure transmitting portion, the tapered surface moves toward the first axial pressure transmitting portion and the second axial pressure transmitting portion. By pressing the first to third rotary shafts, the first axial pressure transmission portion is brought into pressure contact with the fixed bar of the surgical microscope, and the second axial pressure transmission portion is brought into pressure contact with the convex portion of the mouse switch. It is locked and its position and angle can be fixed. When the operation part is operated again to slide the third rotating shaft to the opposite side, the first arm and the second arm become free on the first to third rotating shafts, and the position and angle of the mouse switch can be changed again. can. The operability is excellent because only one operation unit is operated.

According to the second technical aspect of the present invention, since the operation part is a handle that is screwed into a threaded part formed at one end of the third rotating shaft, the screwed state with the threaded part is finely adjusted by rotating the handle. Thus, between the completely locked state and the free state of the first to third rotating shafts, a semi-locked state in which the position and angle are maintained but can be easily moved by hand can be obtained. Therefore, the optimal position and angle of the mouse switch can be adjusted in the semi-locked state before being completely locked, which facilitates the adjustment.

The perspective view which shows a surgical microscope and a mouse switch. FIG. 4 is a side view showing a usage state of the mouse switch; FIG. 4 is a side view showing a housed state of the mouse switch; FIG. 4 is a perspective view showing a first arm, a second arm, and a mouse switch; FIG. 4 is an exploded perspective view showing a first arm, a second arm, and a mouse switch; Sectional view showing a first arm, a second arm, and a mouse switch. FIG. 4 is an exploded cross-sectional view showing the first arm, the second arm, and the mouse switch; FIG. 7 is a cross-sectional view along the arrow SA-SA line in FIG. 6;

1 to 8 are diagrams showing a preferred embodiment of the present invention.

In the above and the following, the directions of front, back, left, and right are as shown in FIG. In addition, even if the parts described below are actually assembled from a plurality of small parts, those parts that function integrally are illustrated as an integral part.

The surgical microscope 1 is supported by a stand device (not shown). The surgical microscope 1 is a stereoscopic microscope having a pair of left and right eyepieces 2 on the front side, and enables a stereoscopically enlarged optical image of a surgical site to be observed.

An upper end of a fixing bar 3 extending downward is fixed between the left and right eyepieces 2 . A first arm 4 and a second arm 5 are provided below the fixed bar 3 , and a mouse switch 6 is supported on the lower end 5 b of the second arm 5 . The mouse switch 6 has an operation lever 7 at its front end, and the operator D can adjust the focus and zoom of the surgical microscope 1 by holding this with his/her mouth.

The upper end portion 4a of the first arm 4 is rotatably attached to the lower end portion of the fixed bar 3 by a first rotating shaft R1 penetrating in the left-right direction. A circular arc surface 3b centered on the first rotation axis R1 is formed at the lower end of the fixed bar 3 through which the first rotation axis R1 passes.

The main part of the first arm 4 is in the shape of a rectangular cylinder, and the upper end part 4a and the lower end part 4b are ring-shaped with only the side surfaces thereof extended. A circular hole 8 through which the first rotating shaft R1 passes is formed in the upper end portion 4a, and a large circular hole 9 through which a third rotating shaft R3 described later passes is formed in the lower end portion 4b. Inside the first arm 4, a first axial pressure transmission portion G1 is accommodated along the longitudinal direction.

On the other hand, a projection 10 is formed on the upper portion of the mouse switch 6, and the lower end portion 5b of the second arm 5 is rotatably mounted thereon by a second rotating shaft R2 penetrating in the left-right direction. A circular arc surface 10a centered on the second rotation axis R2 is formed on the upper side of the convex portion 10 through which the second rotation axis R2 passes.

The main portion of the second arm 5 also has a rectangular tubular shape, and the lower end portion 5b has a ring shape extending only from the side surface thereof, and a circular hole 11 through which the second rotating shaft R2 passes is formed in the center thereof. The upper end portion 5a has a three-dimensional shape with a flange 12 formed on the peripheral edge of the ring-shaped portion, and a circular hole 14 is formed at the center thereof for passing a screw portion 13 of a third rotating shaft R3, which will be described later. A second axial pressure transmission portion G2 is housed inside the second arm 5 along the longitudinal direction.

The lower end portion 4b of the first arm 4 and the upper end portion 5a of the second arm 5 are rotatably connected via a third rotating shaft R3. The third rotating shaft R3 basically has a columnar shape extending in the left-right direction, and a conical tapered surface 15 whose diameter gradually increases is formed in the central portion thereof. A threaded portion 13 is formed to protrude from the left end surface of the third rotating shaft R3.

A circular hole 9 formed in the lower end portion 4b of the first arm 4 is in contact with the side surface of the cylindrical portion other than the tapered surface 15 of the third rotating shaft R3. It can rotate freely, but can slide in the left and right direction.

The upper end portion 5a of the second arm 5 wraps the left and right end surfaces of the third rotating shaft R3 with a gap S therebetween, with the screw portion 13 projecting outward from the circular hole 14. As shown in FIG. Since the flange 12 is in contact with the side surface of the cylindrical portion other than the tapered surface 15 of the third rotating shaft R3, the third rotating shaft R3 is relatively rotatable with respect to the flange 12 in the same manner as the first arm 4, Since the gap S is formed on both sides, it can also be slid in the horizontal direction.

A butterfly handle 17 as an operating portion is screwed through a bearing 16 to the threaded portion 13 of the third rotating shaft R3. One of the bearings 16 is fixed to the upper end portion 5 a of the second arm 5 and the other is fixed to the handle 17 . Therefore, by turning the handle 17, the third rotating shaft R3 can be slid left and right.

The first axial pressure transmitting portion G1 housed in the first arm 4 has an upper end formed into a counter arcuate surface 3a corresponding to the arcuate surface 3b at the lower end of the fixed bar 3, and a lower end tapered to the third rotating shaft R3. A non-tapered surface 15 b corresponding to the surface 15 is formed. Similarly, the second axial pressure transmitting portion G2 housed in the second arm 5 has a lower end formed into an anti-arc surface 10b corresponding to the arc surface 10a of the convex portion 10, and an upper end formed into a taper of the third rotating shaft R3. A non-tapered surface 15 a corresponding to the surface 15 is formed.

Next, the action will be explained.

When the handle 17 is turned by hand to slide the third rotating shaft R3 to the right, the anti-tapered surfaces 15a and 15b of the first axial pressure transmission portion G1 and the second axial pressure transmission portion G2 are separated from the tapered surface 15. The tapered surface 15 does not press the first axial pressure transmitting portion G1 and the second axial pressure transmitting portion G2. Therefore, both ends of the first axial pressure transmission portion G1 do not come into pressure contact with the fixed bar 3 and the third rotation shaft R3, and both ends of the second axial pressure transmission portion G2 also contact the protrusion 10 of the mouse switch 6 and the third rotation shaft R3. becomes a free state without pressure contact. Therefore, the first arm 4 and the second arm 5 rotate about the first to third rotation axes R1 to R3, and the vertical position and the front-rear position of the mouse switch 6 can be freely changed. The angle can also be changed freely. Therefore, the mouse switch 6 can be put in the housed state as shown in FIG. 3 as well as the use state as shown in FIG.

After the mouse switch 6 is set to the desired position and angle, the handle 17 is turned to slide the third rotation shaft R3 to the left, so that the tapered surface 15 moves toward the first axial pressure transmitting portion G1 and the second axial pressure transmitting portion G2. , and presses the first axial pressure transmission portion G1 and the second axial pressure transmission portion G2, respectively. Therefore, both ends of the first axial pressure transmitting portion G1 are pressed against the fixed bar 3 and the third rotating shaft R3, and both ends of the second axial pressure transmitting portion G2 are also pressed against the convex portion 10 of the mouse switch 6 and the third rotating shaft R3. The position and angle of the mouse switch 6 are fixed by pressing and locking.

A semi-locked state can be obtained by finely adjusting the threaded state with the threaded portion 13 by rotating the handle 17 before shifting from the free state to the locked state. That is, instead of closing the handle 17, the rotation is stopped before the locked state, and both ends of the first axial pressure transmission part G1 and the second axial pressure transmission part G2 are not completely pressed against the counterpart, but are rotated. It should be made slidable by applying force in the direction. In this way, the operator D can release the mouse switch 6 once, adjust the position and angle to the desired position in that state, and operate the handle 17 after the adjustment to lock it. It's easy to do.

As described above, according to this embodiment, the free state, locked state, and half-locked state of the mouse switch 6 can be obtained simply by operating one handle 17, so that operability is excellent.

REFERENCE SIGNS LIST 1 surgical microscope 2 eyepiece 3 fixing bar 3b arc surface 3a anti-arc surface (first axial pressure transmission portion)
4 first arm 4a upper end (first arm)
4b lower end (first arm)
5 second arm 5a upper end (second arm)
5b lower end (second arm)
6 mouse switch 10 convex portion 10a arc surface (convex portion)
10b Anti-arc surface (second axial pressure transmission portion)
13 threaded portion 15 tapered surface 15b anti-tapered surface (first axial pressure transmission portion)
15a anti-tapered surface (second axial pressure transmission portion)
17 Handle (operation part)
D Operator S Gap R1 First rotating shaft R2 Second rotating shaft R3 Third rotating shaft G1 First shaft pressure transmission part G2 Second shaft pressure transmission part

Claims (2)

a fixing bar whose upper end is fixed between left and right eyepieces provided on the front side of the surgical microscope, and whose lower end is formed with an arcuate surface centered on a first rotation axis extending in the left-right direction;
a convex portion formed on the upper portion of the mouse switch and having an arcuate surface formed on the upper side about a second rotating shaft extending in the left-right direction;
a first arm having an upper end attached to a lower end of the fixed bar so as to be rotatable around a first rotation shaft, and having a first axial pressure transmission portion accommodated therein;
a second arm having a lower end attached to the projection of the mouse switch so as to be rotatable about a second rotation shaft, and having a second shaft pressure transmission portion accommodated therein;
a third rotating shaft having a conical tapered surface whose diameter gradually expands in the lateral direction, the lower end of the first arm and the upper end of the second arm being rotatably and slidably attached in the lateral direction;
an operation part attached to the first arm or the second arm in a state of being engaged with one end of the third rotating shaft, and sliding the third rotating shaft in the left-right direction;
When the tapered surface of the third rotating shaft slides in the direction toward the first axial pressure transmitting portion and the second axial pressure transmitting portion by operating the operating portion, the tapered surface slides toward the lower end of the first axial pressure transmitting portion and the second axial pressure transmitting portion. The upper end of the two axial pressure transmission portion is pressed, the upper end of the first axial pressure transmission portion is pressed against the arcuate surface of the fixed bar, and the lower end of the second axial pressure transmission portion is pressed against the arcuate surface of the convex portion. and the mounting structure of the mouse switch. The handle is rotatably attached to the lower end of the first arm or the upper end of the second arm in a state where the operating portion is screwed into the threaded portion formed at one end of the third rotating shaft, and the handle is rotated. 2. The mounting structure of the mouse switch according to claim 1, wherein the third rotating shaft slides left and right.

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