JP2016101320A - Surgical microscope system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a surgical microscope system easily returnable to an equilibrium state, even when a weight balance around a horizontal axis of a surgical microscope is disordered by rotation of an eyepiece part.SOLUTION: A balance weight 12 rotatable to the opposite side to an eyepiece part 9 is provided on the side face of a surgical microscope 5. Therefor, when a weight balance around a horizontal axis of the surgical microscope 5 is disordered by rotation of the eyepiece part 9, the weight balance of the surgical microscope can be returned again to an equilibrium state by rotating the balance weight 12.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a surgical microscope system, and more particularly to a surgical microscope system in which a pair of eyepieces is provided in a surgical microscope.

  A surgical microscope used in neurosurgery or the like is used while being supported by a suspension arm provided at the tip of a support arm of a stand device. The lower end of the suspension arm is pivotally supported on either the left or right side surface of the surgical microscope, and the surgical microscope can be rotated about its horizontal axis passing through the pivot point.

  A pair of eyepieces that are rotatable up and down around the rear end is provided in front of the surgical microscope (doctor side). The doctor determines the position of the entire operation microscope while changing the position of the operation apparatus by the movement of the stand device, and once the position is determined, determines the observation angle by rotating the operation microscope around the horizontal axis at that position. That is, the affected part is observed at a position where the angle of the eyepiece part can be easily seen.

  The surgical microscope is adjusted in advance so that the weight balance around the horizontal axis is balanced in a basic posture, and the surgical microscope can be rotated around the horizontal axis (see, for example, Patent Document 1).

Japanese Patent No. 2825721

  However, in such a related technique, although the weight balance around the horizontal axis of the entire surgical microscope is adjusted in advance, if the eyepiece part is largely rotated after the adjustment, the eyepiece part itself has a certain amount of weight. Therefore, the balance of the adjusted weight balance may be lost.

  The present invention has been made by paying attention to such a related art problem, and even if the weight balance around the horizontal axis of the surgical microscope is lost due to the rotation of the eyepiece, it can be easily returned to the balanced state. A surgical microscope system that can be used is provided.

  According to the first aspect of the present invention, a suspension arm extending downward is provided at the tip of the support arm extending in the lateral direction of the stand device, and one side surface of the surgical microscope in the left-right direction is pivotally supported at the lower end of the suspension arm. A pair of eyepieces that can rotate the entire operation microscope about a horizontal axis in the left-right direction passing through the pivot point, and that can rotate up and down around the rear end in front of the operation microscope. A balance microscope having a structure that can be rotated up and down around the front end and stopped at an arbitrary rotation position on the other side surface in the left-right direction of the operation microscope. Installed.

  According to the second feature of the present invention, the attachment point at the front end of the balance weight coincides with the horizontal axis that is the rotation center of the surgical microscope.

  According to the third feature of the present invention, a frictional force capable of stopping the balance weight at an arbitrary rotation position is applied to the attachment point between the front end of the balance weight and the side surface of the surgical microscope.

  According to the first feature of the present invention, since the balance weight that can be rotated on the side opposite to the eyepiece is provided on the side surface of the surgical microscope, the eyepiece is rotated around the horizontal axis of the surgical microscope. When the weight balance is lost, the balance weight can be rotated to return the weight balance of the surgical microscope to the balanced state again.

  According to the second feature of the present invention, since the attachment point of the front end of the balance weight coincides with the horizontal axis that is the rotation center of the surgical microscope, the balance weight angle change and the weight balance correction effect are proportional. It is easy to readjust the weight balance with the balance weight.

  According to the third aspect of the present invention, since frictional force is applied to the attachment point of the balance weight, when the balance weight is manually rotated, the balance weight is stopped as it is. Because of the simple structure that only applies frictional force, adding a balance weight to the surgical microscope does not cause a major design change on the surgical microscope side.

The side view which shows the surgical microscope system which concerns on embodiment of this invention. The perspective view which shows a surgical microscope. Side surface showing a surgical microscope. The side view of the operation microscope which shows the state which rotated the balance weight.

  Hereinafter, embodiments of the present invention will be described with reference to FIGS. In the above and below, the front is the doctor side and the reverse is the reverse. The left and right are the left and right as viewed from the doctor during the operation microscope observation.

  First, the stand device 1 will be described. A support arm 2 extending in the lateral direction is integrally formed on the upper portion of the stand device 1, and a vertical tip link 3 is attached to the tip of the support arm 2. A suspension arm 4 that is rotatable in the horizontal direction about the vertical axis V is provided at the lower portion of the tip link 3.

  The left side surface of the surgical microscope 5 is pivotally supported at the lower end of the suspension arm 4. The surgical microscope 5 is rotatable about a horizontal axis H that passes through the pivot point. The surgical microscope 5 is supported by the lower end 7 of the suspension arm 4 via the clutch portion 6 and rotates about the horizontal axis H only when the clutch portion 6 is released.

  The surgical microscope 5 has a light beam inlet 8 on the lower surface and an eyepiece 9 on the front side. The light beam L of the affected part T taken from the light beam taking-in part 8 can be guided to the pair of eyepieces 9 via the internal optical elements, and the observation part T can be observed in three dimensions. The eyepiece 9 is rotatable about the rear end 10 and can correspond to the posture of the doctor M by rotating.

  A raised portion 11 is formed on the right side surface of the surgical microscope 5, and the front end 13 of the balance weight 12 is pivotally supported on the raised portion 11. The center of the front end 13 coincides with the position of the lower end of the suspension arm 4 supported on the left side surface of the surgical microscope 5, that is, the horizontal axis H that is the rotation center of the surgical microscope 5. The balance weight 12 has a structure in which a weight portion 15 is provided at the rear end of the lever 14, and the rear end side can be turned up and down around the front end 13.

  The eyepiece 9 is pivotable up and down around the rear end 10, whereas the balance weight 12 is conversely pivoted up and down around the front end 13. Appropriate frictional force is applied between the front end 13 of the balance weight 12 and the side surface of the surgical microscope 5, and even if the hand is released after the balance weight 12 is manually rotated to an arbitrary angle, the rotation position is maintained. It comes to stop at.

  The weight balance in the rotation direction around the horizontal axis H of the surgical microscope 5 is adjusted in advance so as to be balanced in a state where the eyepiece 9 is in the basic posture (for example, the state of FIG. 3). Therefore, even if the clutch portion 6 of the attachment point of the surgical microscope 5 is released to make it free, the surgical microscope 5 does not attempt to rotate to either one around the horizontal axis H, and the doctor M moves the surgical microscope 5 itself with a small force. It can be rotated in the required direction. The surgical microscope 5 is fixed by turning on the clutch unit 6 at a necessary rotation angle, and the doctor M can observe the affected part T at that angle.

  In addition, the angle of the eyepiece 9 may be greatly changed along with the change of the posture of the doctor M depending on the contents of the surgical operation. For example, as shown in FIG. 4, the eyepiece 9 may be greatly raised upward. In such a case, since the eyepiece 9 itself has a certain amount of weight, the position of the center of gravity of the eyepiece 9 also changes. Therefore, the weight balance around the horizontal axis H that has been adjusted in advance is also lost.

  If the clutch unit 6 is turned off while the weight balance is lost, the operation microscope 5 tends to rotate about one of the horizontal axes H, so that the operability of the operation microscope 5 is lowered.

  In such a case, the balance weight 12 can be manually rotated to cancel the imbalanced state of the weight balance around the horizontal axis H caused by the rotation of the eyepiece 9. For example, when the eyepiece 9 is rotated upward as shown in FIG. 4, the balance weight 12 is rotated downward. By doing so, the weight balance around the horizontal axis H of the entire operation microscope 5 becomes balanced again, and the doctor M can rotate the operation microscope 5 in a necessary direction with a light force when the clutch unit 6 is turned off. . Since the attachment point of the front end 13 of the balance weight 12 coincides with the horizontal axis H that is the rotation center of the surgical microscope 5, the angle change of the balance weight 12 and the correction effect of the weight balance are proportional, and the weight balance by the balance weight It is easy to readjust.

  Since the necessary frictional force is applied to the front end 13 of the balance weight 12, the balance weight 12 after the angle change is maintained as it is. Because of the simple structure that only applies the frictional force, even if the balance weight 12 is added to the surgical microscope 5, no significant design change is caused on the surgical microscope 5 side.

DESCRIPTION OF SYMBOLS 1 Stand apparatus 2 Support arm 4 Suspension arm 5 Surgical microscope 9 Eyepiece part 12 Balance weight H Horizontal axis V Vertical axis T Affected part L Light flux M Doctor

Claims (3)

A suspension arm extending downward is provided at the distal end of the support arm extending in the lateral direction of the stand device, and a lateral side of the surgical microscope is pivotally supported at the lower end of the suspension arm in the lateral direction passing through the pivot point. A surgical microscope system in which the entire surgical microscope is rotatable about a horizontal axis of the surgical microscope, and a pair of eyepieces that are rotatable up and down around the rear end is provided in front of the surgical microscope,
A surgical microscope characterized in that a balance weight having a structure in which a rear end side is pivotable up and down around the front end and can be stopped at an arbitrary rotational position is attached to the other side surface in the left-right direction of the surgical microscope. system.   The surgical microscope system according to claim 1, wherein the attachment point at the front end of the balance weight coincides with a horizontal axis that is a rotation center of the surgical microscope.   The surgical microscope system according to claim 1 or 2, wherein a frictional force capable of stopping the balance weight at an arbitrary rotation position is applied to an attachment point between the front end of the balance weight and a side surface of the surgical microscope. .