JP5396307B2 - Surgical microscope system - Google Patents

Description

  The present invention relates to a surgical microscope system, and more particularly to a surgical microscope system in which the eyepiece moves little in the vertical direction even when the surgical microscope mirror is rotated up and down.

  A surgical microscope used in neurosurgery or the like is used while being supported by a tip of a support arm of a stand device via a suspension arm. Specifically, a pivoting body that is pivotable in a horizontal direction around a vertical axis is provided at the tip of the support arm, and a suspension arm extends downward from the pivoting arm. It is supported so as to be rotatable in the vertical direction about the shaft. The surgical microscope can rotate in the horizontal direction together with the suspension arm and the rotating body with respect to the support arm, and can rotate in the vertical direction with respect to the suspension arm. The surgical microscope is provided with a pair of eyepieces that are rotatable up and down around one end. The observer can adjust the eyepiece to an optimal vertical position by rotating the eyepiece up and down (see, for example, Patent Document 1).

Japanese Patent No. 2825721

  However, in such a conventional technique, when the surgical microscope is turned up and down, the eyepiece part turns up and down together with the surgical microscope, so the vertical position of the eyepiece part is observed. Even if the operator adjusts to the optimal vertical position, the vertical position of the eyepiece changes if the surgical microscope is rotated in the vertical direction.

  The present invention has been made paying attention to such a conventional technique, and provides a surgical microscope system in which the eyepiece part moves little in the vertical direction even when the surgical microscope mirror is rotated up and down. It is.

  The invention according to claim 1 is provided with a rotating body that is rotatable in a horizontal direction around a vertical axis at a tip of a support arm that extends in a lateral direction of the stand device, and a suspension arm that extends downward from the rotating body, A surgical microscope having a pair of eyepieces that support a surgical microscope that can be pivoted up and down around a horizontal axis at the lower end of the suspension arm, and that has a pair of eyepieces that can pivot up and down around one end. The system is characterized in that both ends of a link capable of transmitting a load in at least a pulling direction are rotatably connected to the rotating body and the eyepiece.

  The invention according to claim 2 is characterized in that the link is a structure that can be folded or shortened in the pushing direction.

  According to the first aspect of the present invention, the eyepiece of the surgical microscope and the rotating body provided at the tip of the support arm of the stand device are connected by a link capable of transmitting at least a load in the pulling direction. When the surgical microscope is rotated downward, the eyepiece is pulled up by the link, so that the vertical position of the eyepiece does not change. If the link can transmit a load even in the pushing direction, the eyepiece is pushed down when the surgical microscope is rotated upward, and thus the vertical position of the eyepiece does not change.

  According to the second aspect of the invention, since the link is a structure that can be folded or shortened in the pushing direction, when the surgical microscope is rotated upward, the eyepiece is relatively rotated downward. Even if it interferes with the operation microscope, it is possible to rotate the operation microscope further upward, and the observation direction of the operation microscope can be greatly changed.

The side view which shows the surgical microscope system which concerns on embodiment of this invention. The perspective view which shows a link and a surgical microscope. Side surface showing a surgical microscope. Sectional drawing which shows the case where a surgical microscope is rotated below. Sectional drawing which shows the case where a surgical microscope is rotated upwards.

  Hereinafter, embodiments of the present invention will be described with reference to FIGS.

Stand device First, the stand device 1 will be described. 2 is a base, and a lower surface of the base 2 is provided with a caster 3 with a lock mechanism. The caster 3 allows the stand device 1 to move on the floor 4. A main body 5 having a substantially U-shaped side surface (C shape) is installed on the upper portion of the base 2.

  A parallel link 6 is pivotally supported on a rotation axis X at the upper part of the main body 5. Each of the parallel links 6 is formed by connecting two ends of each of the pair of parallel vertical links 7 and 8 and the horizontal links 9 and 10 at connection axis points. A lower middle portion is pivotally supported by the rotation axis X. A counterweight 11 is attached to the lower side link 10.

  The horizontal link 9 on the upper side of the parallel link 6 is integrally formed with a support arm 12 in which the horizontal link 9 is extended in the horizontal direction as it is, and a vertical tip link 13 is rotatable at the tip. Installed. A box-shaped rotating body 14 that is rotatable in the horizontal direction about the vertical axis V is provided below the tip link 13.

  An L-shaped crank member 15 is pivotally supported at a connecting shaft point that is a starting point of the support arm 12, and one end of the crank member 15 is connected to the main body 5 via a vertical sublink 16 and the other end is connected. It is connected to the upper end of the distal end link 13 via a lateral sub link 17. The vertical sublink 16, the vertical link 7, the main body 5 and the crank member 15 constitute a parallel link, and the lateral sublink 17, the support arm 12, the crank member 15 and the tip link 13 constitute another parallel link, which are cranks. The members 15 are connected.

  That is, since the upper end of the tip link 13 is connected to the main body through three parts of the horizontal sublink 17, the crank member 15, and the vertical sublink 16, the vertical link of the tip link 13 no matter how the parallel link 6 is moved. State is always maintained. This is because the posture of the tip link 13 is fixed to the main body 5 via two parallel links and the crank member 15.

Supporting the Operating Microscope The operating microscope 18 is supported by a substantially inverted L-shaped suspension arm 19 with respect to the rotating body 14 of the distal link 13 that is maintained in the vertical state as described above. The suspension arm 19 is attached to the lower surface of the rotating body 14 and can rotate in the horizontal direction around the vertical axis V together with the rotating body 14. Therefore, even if the surgical microscope 18 is translated in the horizontal and vertical directions, the direction of the vertical axis V (vertical direction) does not change.

  The side surface of the surgical microscope 18 is supported on the lower end of the suspension arm 19 so as to be rotatable up and down about the horizontal axis H. The surgical microscope 18 has a light beam inlet 20 on the lower surface and an eyepiece 21 on the upper part. The light beam L of the observation unit T taken from the light beam acquisition unit 20 is guided to the pair of eyepieces 21 via the internal optical elements, so that the observation unit T can be observed in a three-dimensional manner.

  The eyepiece portion 21 is rotatable up and down around a rotation shaft 21a at one end, and has an intermediate rotation shaft 21b in the middle. The intermediate connecting shaft 21b rotates in conjunction with the connecting shaft 21a at one end. The left and right eyepieces 21 are integrally connected by a plate 22. The entire eyepiece 21 is pivoted up and down about a pivot shaft 21a at one end, so that the vertical position is changed.

  Brackets 23 and 24 are provided on the corresponding surfaces of the plate 22 in the eyepiece 21 and the rotating body 14 of the distal link 13, respectively. Then, both ends of the link 25 are pivotally supported with respect to the brackets 23 and 24, respectively. The eyepiece 21 is adjusted to an optimal vertical position for a general observer, and a link 25 is connected later. This link 25 has a connecting shaft 26 in the middle, and has a structure that can be folded. A predetermined frictional force is applied to the connecting shaft 26 of the link 25 with respect to rotation around the shaft, and the connecting shaft 26 can be folded only in a direction away from the surgical microscope 18 by a stopper 27. In other words, the stopper 27 prevents the folding in the direction approaching the surgical microscope 18 and the coupling shaft 26 is set to a slight angle so as to be surely folded away from the straight line without being linear. Since the link 25 can be folded in this way, a load can be transmitted through the connecting shaft 26 in the pulling direction, but a load larger than the frictional force of the connecting shaft 26 cannot be transmitted in the pushing direction.

  Next, the operation will be described.

  When observing the observation part T straight from above with the surgical microscope 18, the observer M can observe the eyepiece part 21 at an optimal vertical position as shown in FIG.

  Next, when the observation part T is observed obliquely from the front side, as shown in FIG. 4, the distal link 13 of the stand device 1 is moved to the front side, and at the same time, the surgical microscope 18 is moved to the lower end of the suspension arm 19. Is rotated downward about the horizontal axis H.

  At this time, even if the surgical microscope 18 is rotated downward, the eyepiece 21 is pulled by the link 25, so that the eyepiece 21 is pulled up relatively upward, and the optimal position of the eyepiece 21 is maintained. . That is, the link 25 acts so as to maintain the distance between the rotating portion 14 and the eyepiece 21 that are temporarily stationary at a predetermined length. Accordingly, the observer M can perform observation without greatly changing the observation posture.

  Next, when the observation part T is observed obliquely from the opposite side, as shown in FIG. 5, the distal link 13 of the stand device 1 is moved to the back side, and at the same time, the surgical microscope 18 is moved to the lower end of the suspension arm 19. Is rotated upward about the horizontal axis H.

  At that time, since the eyepiece 21 is pushed by the link 25, the eyepiece 21 is pushed down relatively via the rotation shafts 21a and 21b. When the amount of rotation of the surgical microscope 18 is large, the eyepiece unit 21 interferes with the front end of the surgical microscope 18. Then, a load in the pushing direction is applied to the link 25 and a torque around the connecting shaft 26 is applied to the link element of the link 25, so that the link 25 is broken from the connecting shaft 26 and the surgical microscope 18 is rotated downward. Is acceptable. The link 25 is bent by the function of the stopper 27 so that the direction in which the link 25 is bent (the moving direction of the connecting shaft 26) is away from the surgical microscope 18.

  Thus, even if the surgical microscope 18 is rotated upward, the eyepiece 21 rotates relatively downward until it interferes with the surgical microscope 18, so that the change in the vertical position of the eyepiece 21 is kept small. Therefore, the observer M can observe without greatly changing the observation posture.

  In the above description, the link 25 that can be folded in the push direction is taken as an example, but the distance between the rotating part 14 and the eyepiece part 21 that are temporarily stationary can be shortened by using a slide mechanism or the like. The structure may be as follows. Further, when there is a sufficient interval between the eyepiece 21 and the surgical microscope 18 and the two are difficult to interfere with each other, the link 25 is made of a single structure, and the same applies in both the pulling direction and the pushing direction. The load may be transmitted.

DESCRIPTION OF SYMBOLS 1 Stand apparatus 12 Support arm 13 End link 14 Rotating body 18 Operating microscope 19 Suspension arm 21 Eyepiece part 25 Link V Vertical axis H Horizontal axis

Claims (2)

Provided at the tip of the support arm that extends in the lateral direction of the stand device is a rotating body that can rotate in the horizontal direction around the vertical axis, a suspension arm that extends downward from the rotating body, A surgical microscope system that supports a surgical microscope that is rotatable up and down around an axis, and that has a pair of eyepieces that are rotatable up and down around one end on the upper part.
A surgical microscope system, wherein both ends of a link capable of transmitting a load in at least a pulling direction are rotatably connected to the rotating body and the eyepiece.   The surgical microscope system according to claim 1, wherein the link has a structure that can be folded or shortened in a pushing direction.

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