JP2020118740A - Stand device of optical equipment for medical care - Google Patents

Abstract

To provide a stand device of optical equipment for medical care that can improve a weight balance of a stand body in right and left directions centering on a pole.SOLUTION: In a parallel link mechanism P, a rear end 11 of a lower arm 7 supporting a counterweight C is bent toward a stand body 3. This locates the counterweight C closer to the stand body 3 than the lower arm 7, thereby improving a weight balance of the stand body 3 in right and left directions centering on a pole 2.SELECTED DRAWING: Figure 4

Description

The present invention relates to a stand device for medical optical equipment.

Medical optical devices such as surgical microscopes and surgical cameras used in neurosurgery and the like are used while being supported by a stand body. The stand body is attached to a pillar installed on the floor, and can rotate in the horizontal direction around the pillar.

A parallel link mechanism that is rotatable around a horizontal axis is attached to one of the left and right side surfaces of the stand body, and one side of the parallel link mechanism has a medical optical device and the other side has a weight with the medical optical device. A counter weight for balancing is provided (for example, see Patent Document 1).

JP, 2017-93478, A

However, in such a related technique, since the parallel link mechanism having the medical optical device and the counter weight is attached to one of the left and right side surfaces of the stand body, the weight balance centered on the column of the stand body is provided. As a result, the side to which the parallel link mechanism is attached inevitably becomes heavy. Therefore, in order to improve the weight balance of the stand body in the left-right direction, it is necessary to add another weight to the side opposite to the parallel link mechanism, which causes an increase in the total weight of the stand body. If the total weight of the stand body is increased, transportation work and assembly work become difficult.

The present invention has been made by paying attention to such a related technique, and provides a stand device for a medical optical device capable of improving the weight balance in the left-right direction of a stand body centering on a column. It is an object.

According to the first technical aspect of the present invention, a stand main body is horizontally rotatably mounted around a pillar installed on a floor, and two parallel front arms are provided on one of the left and right side surfaces of the stand main body. And a rear arm and two parallel upper and lower arms, and a parallel link mechanism in which the connecting portion of each arm is rotatably supported is rotated about a horizontal axis set in the middle of the front arm. The parallel link mechanism is mounted movably, and the upper side of the parallel link mechanism is formed by a part of the upper arm, and a medical optical device is supported by a tip portion of the upper arm that extends forward beyond the parallel link mechanism. A lower side is formed by a part of a lower arm, and is a stand device of a medical optical device in which a counter weight is supported at a rear end portion extending rearward beyond a parallel link mechanism of the lower arm. The rear end portion is bent toward the stand body side, and the counter weight is supported in a state of being closer to the stand body side than the lower arm.

According to the second technical aspect of the present invention, the counterweight is attached to a block fixed to the front side of the rear end of the lower arm, and a slope for avoiding interference with the rear arm is provided on the upper part of the block. It is characterized by being formed.

According to the first technical aspect of the present invention, since the rear end portion of the lower arm supporting the counterweight in the parallel link mechanism is bent toward the stand body, the position of the counterweight is lower than that of the lower arm. As it approaches the stand body side, the weight balance in the left-right direction centering around the stand body columns is improved.

According to the second technical aspect of the present invention, even if the block for mounting the counterweight is fixed to the front side of the rear end of the lower arm, the parallel link is formed because the slope is formed on the upper part of the block. Even if the mechanism moves and the rear arm relatively rotates around its lower end, the rear arm and the block are less likely to interfere with each other. Therefore, the movable range of the parallel link mechanism becomes large.

The perspective view which shows the stand apparatus of medical optical equipment. The perspective view which shows the stand apparatus seen from another direction. The front view which shows a stand apparatus. Sectional drawing of the lower arm which follows the SA-SA line shown by the arrow in FIG. FIG. 3 is a side view of the lower arm as seen from the direction of arrow DA in FIG. 2.

A preferred embodiment of the present invention will be described with reference to FIGS. Above and below, the front-back, left-right directionality is as shown in FIGS. 1 and 2.

A column 2 is erected at the center of a base 1 installed on the floor of the operating room. A stand body 3 is supported on the upper ends of the columns 2 so as to be rotatable in the horizontal direction. The stand body 3 supports a parallel link mechanism P having a structure in which upper and lower ends of a front arm 4 and a rear arm 5 which are parallel to each other are axially supported by corresponding portions of the upper arm 6 and the lower arm 7. In the parallel link mechanism P, a horizontal shaft 8 is set in the middle of the front arm 4, and the horizontal shaft 8 is rotatably attached to the right side surface of the stand body 3.

The upper side of the parallel link mechanism P is formed by a part of the upper arm 6, and the upper arm 6 extends forward as it is. A tip arm 9 is pivotally supported at the tip of the upper arm 6, and a surgical camera 10 is supported below the tip arm 9.

The lower side of the parallel link mechanism P is formed by a part of the lower arm 7, and the lower arm 7 extends rearward as it is. A rear end 11 of the lower arm 7 is bent toward the stand body 3, and a block 12 is fixed to the front of the rear end 11. A screw rod 13 extending rearward is fixed to the block 12, and a counterweight C is screwed to the screw rod 13. Therefore, the counterweight C can change its front-rear position by rotating around the screw rod 13.

Since the counterweight C is attached to the rear end portion 11 that is bent toward the stand body 3, the counterweight C is closer to the stand body 3 side than the lower arm 7 by S (see FIG. 4). The block 12 for fixing the screw rod 13 has a triangular cross section, and has a slope 14 on its upper part.

An L-shaped crank member 15 is pivotally supported on the upper end of the front arm 4. The upper end of the crank member 15 and the upper end of the tip arm 9 are connected by a lateral sub arm 16 mechanically parallel to the upper arm 6. The other end of the crank member 15 and the lower arm 7 are connected by a vertical sub-arm 17 which is mechanically parallel to the front arm 4 to prevent the crank member 15 from rotating. Therefore, the tip arm 9 connected to the upper end of the crank member 15 via the horizontal sub-arm 16 also does not rotate, and the tip arm 9 is always maintained in the vertical state.

By rotating the parallel link mechanism P about the horizontal axis 8 or deforming the whole, the surgical camera 10 can be moved back and forth and up and down in a vertical state. Even if the surgical camera 10 is moved to any position, the counterweight C maintains the weight balance of the parallel link mechanism P centered on the horizontal axis 8 in the front-rear direction, and therefore the surgical camera 10 was moved. Stop ahead.

When the surgical camera 10 is deformed and the surgical camera 10 is moved back and forth or up and down, the rear arm 5 rotates about its lower end with respect to the lower arm 7 as shown in FIG. ). Even if the rear arm 5 relatively rotates in this way, the rear arm 5 and the block 12 are less likely to interfere with each other because the slope 14 is formed above the block 12. Therefore, the movable range of the parallel link mechanism P becomes large, and the moving range of the surgical camera 10 can be expanded.

Further, since the parallel link mechanism P having the surgical camera 10 and the counter weight C is attached to the right side surface of the stand body 3, as shown in FIG. , W2, the weight W1 on the parallel link mechanism P side tends to be heavy. However, according to this embodiment, since the rear end portion 11 of the lower arm 7 supporting the counterweight C is bent toward the stand body 3 side, the position of the counterweight C with respect to the column 2 is the lower arm. 7 is closer to the stand body 3 side than S by 7, so that the weight balance (W1 vs. W2) in the left-right direction centering on the column 2 of the stand body 3 which is the center of rotation is improved. Therefore, it is possible to reduce or eliminate another weight that is conventionally provided on the side opposite to the parallel link mechanism P around the support column 2 of the stand body 3. Therefore, the total weight of the stand body 3 can be reduced, which facilitates the transportation work and the assembling work.

2 Support 3 Stand body 4 Front arm 5 Rear arm 6 Upper arm 7 Lower arm 8 Horizontal axis 10 Surgical camera 11 Rear end 12 Block 14 Slope C Counterweight P Parallel link mechanism

Claims (2)

The main body of the stand is attached so that it can be rotated horizontally around the pillars installed on the floor.
A parallel link in which two parallel front and rear arms and two parallel upper and lower arms are provided on one of the left and right side surfaces of the stand main body, and a connecting portion of each arm is rotatably supported. The mechanism is rotatably attached around a horizontal axis set in the middle of the front arm,
The upper side of the parallel link mechanism is formed by a part of the upper arm, and a medical optical device is supported by a tip portion of the upper arm that extends forward beyond the parallel link mechanism.
A lower side of the parallel link mechanism is formed by a part of the lower arm, and is a stand device of a medical optical device in which a counterweight is supported at a rear end portion of the lower arm that is extended rearward beyond the parallel link mechanism,
A stand device for medical optical equipment, wherein a rear end portion of the lower arm is bent toward the stand body side, and the counterweight is supported in a state of being closer to the stand body side than the lower arm. The counterweight is attached to a block fixed to the front side of the rear end of the lower arm, and an inclined surface for avoiding interference with the rear arm is formed on the upper part of the block. Medical optical equipment stand device.

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